The US media and the middleeast Essay Example | Topics and Well Written Essays - 1000 words

The US media and the middleeast - Essay Example The period of enlightenment in Europe involved the ranking of society by evolutionary scale from civilization to barbarism, which contributed to a negativity surrounding the Middle East. The spread of colonization in the 19th century brought with it a further distinction of â€Å"others†, with the Middle East considered as such. A similar ideology evolved through the 20th century, with the US being increasingly involved in the Middle East expanse, and Israel in the post-1945 period. As Israel’s staunchest supporter, to preeminence in a region of competitive interests is difficult for Americans. The media took a leading role in redefining the political and cultural agenda of the US toward the region. This paper is a discussion of the United States media and the Middle East. Representation of the Middle East by the US Media Most media experts argue that the coverage of the Middle East by the US media is in the context of a primarily Western audience. Unless there is a red efinition of cultural discrepancies between the Middle East and the US, then a negative, stereotypical image will continue to be depicted in the media (Kamalipour 33). Diplomatic historians will approach the US foreign policy toward the region from a perspective privileging the interests of the US in the region. In this context, culture is left to play a subordinate role. News media can be viewed as the driving force behind both domestic and international political mobilization. Media creates a stereotypical representation of the region’s people and culture, slowly engendering a misunderstanding and intolerance in mainstream American culture (Kamalipour 34). This representation was exacerbated in the aftermath of 9/ 11 and the American invasion of Iraq. Media tends to construct the stereotypical Middle Easterner, rather than, illuminate the relationships between culture and the political process. Despite having contributed to the American economy for over two centuries, the n egative reputations preceding them, have delegated to second-rate citizens who cannot embrace the American dream and its secular nature. American media have picked up this and packaged it for American consumption. In this respect, the Middle East is represented within a binary oppositional framework where the region is classified as a tyrannical space (Kamalipour 34). Stuart Hall, who is a cultural critic, contends that these binary oppositions are crucial for the establishment of a difference for the facilitation of organizing perceptive systems. This classification system is further elaborated in order to maintain an oppositional relationship between the uncivilized and the uncivilized. Misrepresentation, in this context, then becomes an instrument for the advancement of political agenda. Throughout Western history, negative and stereotypical portrayals have been utilized to service imperial projects. Presently, there is evidence that the media tends to create a link between Weste rn ideologies in the Middle East and the domestic imagination. Representation is a phenomenon when dealing with differences in culture. In this context, it engages reactions, emotions and attitudes while seeking to influence the viewer’s opinion and questions. It also promotes the synthesis of a set of cultural values that respond to the viewer’s anxieties (Kamalipour 35). In this context, a Middle Easterner is defined

Pre-testing Essay Example for Free

Pre-testing Essay Pre-testing is a method that attempts to improve ideas and prototypes for submitting them to the relevant group representatives and obtaining their results before the final stage (Varkevisser, Pathmanathan Brownlee, 2003). It may also involve checking whether the material produced is appropriate for the group. It is conducted to determine which the best method to use (Kumar, 2005). Pre-testing is commonly used for methods of collecting data since other methods such as questionnaires, interviewer instructions and observation are frequently prone to subjective interpretation and may distort the results. Need for pre-testing messages and materials in communication strategy Pretest helps ensure that materials convey a clear and effective message to a program’s target audience (Paliwoda Ryan’s, 2008). It is valuable at several stages of message and material development. Some methods can be used used in early stages to test concepts while other methods are more useful when materials are close to final form. It is important to pretest the communication content that is to be produced before finalizing them(Kumar, 2005). By doing so it will give room to gauge reactions, revise the concept and communication materials or may be amend our strategy if its likely to produce undesired results. It is important to make drafts, samples or outlines of materials we intend to produce (Poscente, Rothstein Irvine, 2002). For pre-testing purposes, one can make drafts, outlines or samples of the materials we intend to develop. Subgroups of population with which pre-testing is done Subgroup analyses in addition to the total study population are common in clinical trials. It is well recognized that findings from subgroup analyses do not provide confirmatory evidence for subgroup treatment (Kumar, 2005). PRETESTING METHODS According to Kumar (2005), the most widely used pre-testing tool is the cognitive interview. The other method is central location intercept concept which purpose is to obtain many individual reactions. There is also focus group, which purpose is to obtain insights about audience concerns, beliefs, reactions, and vocabulary. Theartre testing is another method which purpose is to obtain many respondents at once, measure and recall under conditions that simulate actual viewing. There is also self-administered questionnaire, which can be mailed or personally delivered (Paliwoda Ryan’s, 2008). Omnibus survey is also used where data on a wide variety of subjects is collected during the same interview. Interpreting results from pre-testing and refining the messages Refine the most promising concepts and develop messages using your own creative briefs using your creative briefs, results from your concept testing, and a review of relevant communication and behavioral theories. Ensure that you revise the existing materials if necessary. Information messages should communicate some crucial characteristics such as accuracy, completeness, and relevancy (Paliwoda Ryan’s, 2008). REFERENCES Kumar, R, (2005). Research Methodology: a step by step guide for beginners. Vancouver: VC Sage publications Paliwoda S. J. and Ryan’s J. K. (2008). Business and economics. Massachusetts: MA, Edward Elgar, Poscente, N. , Rothstein, M. , Irvine, M. J. (2002). Using marketing research methods to evaluate a stage-specific intervention. American Journal of Health Behavior, 26, 243-251. Varkevisser C. M. , Pathmanathan I. and Brownlee A. T. (2003) Designing and conducting health systems research projects: Proposal development and fieldwork, Volume 1 Washington DC, IDRC.

Performance Of Wells Turbine Engineering Essay

Performance Of Wells Turbine Engineering Essay ABSTRACT A Wells turbine has inherent disadvantages in comparison with conventional turbines: relative low efficiency and poor starting characteristics. In this case, the performance of wells turbine is studied on computational analysis by changing aerofoils and providing different angle of incidence for the improvement of the turbines performance. Study is based on analysing the flow of air on turbine using computational analysis at steady condition. 1 INTRODUCTION: The Ozone depletion and global warming have altered the international community and urged the need for more focus on alternative green sources of energy. Ocean wave energy is one of the renewable forms of energy which can be utilized in response to the disturbing prospect of an exhaustible source of energy. Several wave energy devices being studied under many wave energy programs make use of the principle of the oscillating water column (OWC).Potentially; the most successful device used in harnessing on wave energy has been the OWC wave energy converter. The OWC chamber, either floating or bottom standing, with the immersed end opened to the action of the sea. A reciprocating airflow is created by the action of the free surface of the water within the chamber. The conversion of this airflow into mechanical energy may be achieved by a number of devices like:- A. TAPCHAN: The TAPCHAN comprises a gradually narrowing channel with wall heights typically 3 to 5 m above mean water level. The waves enter the wide end of the channel and, as they propagate down the narrowing channel, the wave height is amplified until the wave crests spill over the walls to a reservoir which provides a stable water supply to a conventional low head turbine. The requirements of low tidal range and suitable shoreline limit the world-wide installation of this device. Fig (a) TAPERED CHANNEL[1] (TAPCHAN)http://re.emsd.gov.hk/english/other/marine/images/marine_tech_010_2.gif B. PENDULOR: The PENDULOR device consists of a rectangular box, which is open to the sea at one end. A pendulum flap is hinged over this opening, so that the action of the waves causes it to swing back and forth. This motion is then used to power a hydraulic pump and generator.http://t2.gstatic.com/images?q=tbn:ANd9GcQ7yge9ouptnhszDgsXGA_gCvAXKqbo78BeXZHFFtPB89433p0p Fig (b) PEDULOR [2] C. WELLS TURBINE: The Wells turbine is one of the most suitable air turbines for energy conversion from oscillating air flow. . A schematic view of the OWC device with a Wells turbine is shown in Fig. c. The Wells turbine is an axial flow air turbine. It consists of several symmetrical aerofoil blades set around a hub. As waves Impinge on the device, they cause the water column to rise and fall in the air chamber, which alternately compresses and depressurized the trapped air. This air is allowed to flow to and from the atmosphere through a turbine which drives an electric generator.http://www.aussiestockforums.com/forums/attachment.php?attachmentid=9213stc=1d=1180172232 Fig (c) WELLS TURBINE[3] Fig. 1.1: Schematic of the Three Major shoreline Devices The Wells turbine is a self-rectifying air turbine which is expected to be widely used in wave energy devices with the OWC (Raghunathan, 1995) .It can extract power at low airflow rate, when other turbines would be inefficient. The Wells turbines for wave power conversion have less efficiency. To increase the efficiency is the major quest all over the world, the flow of air through the wells turbine impeller is carried out in this project by using different size impeller and introducing biplane i.e. two rows of symmetrical aerofoil blades. 1.1 WAVE RESOURCEShttp://www.oceanenergy.ie/images/world-map.jpg Fig. 1.2: Global Distribution of Deep Water Wave power levels in kW/m crest length[4] Despite the climate change phenomena, the world resource for wave remains very much as shown in fig. 1.2 by Dr Tom Thorpe [5]. The highest energy waves are concentrated off the western coasts in the 40o-60o latitude range north and south. The power in the wave fronts varies in these areas between 30 and 70kW/m with peaks to 100kW/m in the Atlantic SW of Ireland, the Southern Ocean and off Cape Horn. The capability to supply electricity from this resource is such that, if harnessed appropriately, 10% of the current level of world supply could be provided [4] PERIOD AMPLITUDE POWER DENSITY VELOCITY (m/s) WAVELENGTH (sec) (m) (kW/m) (m) Storm 14 14 1700 23 320 Average 9 3.5 60 15 150 Calm 5.5 0.5 1 9 50 Fig: 1.3 Tthe nautral and technical wave energy resource for the north and west side of the UK[6] The techinical resource is dependent on the nautral conditions like the shape of the rock and location i.e beaches and gullies. The wave energy at calm sea is considered in this project. 1.2 WELLS TURBINE The monoplane Wells turbine i.e. the basic Wells turbine consists of several symmetrical aerofoil blades (NACA four digit series) set around a hub at 90 degrees with respect to the airflow. Since its an invention by Prof. A.A. Wells in 1976, most researchers have focused on improving its efficiency and its range of efficient operation. In fact, compared to other conventional air turbines (e.g. Francis turbine) the Wells turbine has a lower efficiency and a narrow operational region. Nevertheless, it can extract power at low airflow rate, when other turbines would be inefficient. Fig. 1.4: Schematic of the Monoplane Wells Turbine[7] A schematic diagram of a Wells turbine is shown in Fig. 1.4. At first sight the arrangement might seem to be unlikely means of energy conversion. However, once the blades have attained design speed the turbine is capable of producing a time-averaged positive power output from the cyclically reversing airflow with a fairly high efficiency. Wells turbine has low efficiency and poor starting characteristics. The Biplane Wells turbine: Muhammad Mamun in the Study on the Hysteretic Characteristics of the Wells Turbine in a Deep Stall Condition says the pressure drop across a mono-plane Wells turbine above is proportional to the square of the tip speed which has to be limited if transonic effects are to avoided. For wave energy devices which produce significantly larger pressure drops than the limit for a single plane turbine a biplane turbine can be used Fig. 1.5: Schematic of the Biplane Wells [7] It has certain advantages over the conventional monoplane Wells turbine as follows: I. It can operate under high loading. II. It can absorb higher wave power than the monoplane turbine if the diameter and rotational speed of the turbine are kept constant. III. The design speed is lower than that of the monoplane for the same loading. IV. It avoids the use of guide vanes and therefore the turbine would require less maintenance and repairs. [7] 1.3 PRINCIPLE OF OPERATION The principle of operation of Wells turbine is based on the classical aerofoil theory. According to the classical aerofoil theory, an aerofoil which is set at an angle of incidence ÃŽÂ ± in a fluid flow generates a lift force L normal to the free stream. The aerofoil also experiences a drag force D in the direction of the free stream (relative velocity). These lift and drag forces can be resolved into tangential (in the plane of rotation) and axial (normal to the plane of rotation) components FT and FA respectively. Fig. 1.6 Notation for determining lift, drag, and axial and tangential forces on An aerofoil[7] Resulting expression for axial and tangential forces FA = LcosÃŽÂ ± + DsinÃŽÂ ± FT = LsinÃŽÂ ± DcosÃŽÂ ± The axial force is absorbed but the turbine while the tangential force causes the turbine to rotate. For a symmetrical airfoil the direction of tangential force is the same for both positive and negative values of ÃŽÂ ±. Therefore, the direction of rotation of the rotor is independent of airflow direction. 2 AIMS AND OBJECTIVES OF THE PROJECT Simulation of air flow through wells turbine impeller by means of numerical method using a CFD (Computational fluid dynamics) called FLUENT and check the flow process of different parameters and the factors affecting the differences. Since wells turbine is a low efficiency turbine to increase the efficiency of Wells turbine is the other aim. Path followed to meet the requirements is first calculation of efficiency theoretically. Simulating a modified design by using different angle of incidence and making biplane i.e. two rows. Comparing the results of different model and selecting the suitable design. 3 LITERATURE REVIEW: 3.1 Types of CFD PROCESS USED: Commercial CFD code: FLUENT, Star-CD, FLOW-3D, CFX/AEA, etc. Research CFD code: Self-developed Public domain software (PHI3D, HYDRO, and WinpipeD, etc.) Other CFD software includes the Grid generation software (e.g. Gridgen, Gambit) and flow visualization software (e.g. Tecplot, FieldView) Commercial CFD code FLUENT is used in this project. 3.2 General working on CFD Table3.1: CFD working layout The Processes shown in the table 3.1 is divided into pre- process and post- process viz. GAMBIET AND FLUENT General sequence of GAMBIT operations Initial setup Solver selection, Mesh size, Defaults, etc. Geometry creation (ACIS, IGES or Mesh import) Create full geometry Decompose into mesh-able sections Meshing Local meshing: Edge and Boundary layers Global meshing: Face and/or Volume Mesh examination Zone assignment Continuum and Boundary attachment Mesh export General sequence of FLUENT operations Selection of appropriate models. Turbulence, combustion, multiphase, etc. Define material properties Fluid Solid Mixture Prescribe operating conditions Prescribe boundary conditions at all boundaru zones Provide and initial solution Set up solver controls Set up convergence monitors 3.3 Grid generation: Grid generation is one of the key elements in Computational Fluid Dynamics (CFC). It has now become a fairly common tool for use in the numerical solution of partial differential equations on arbitrarily shaped regions. The numerical solution of partial differential equations requires some discretization of the field into a collection of points (nodes) or elemental volumes (cells). The differential equations are approximated by a set of algebraic equations on this collection, and this system of algebraic equations is then solved to produce a set of discrete values which approximates the solution of the partial differential system over the field. The practice of discretizing the physical domain into a finite number of elements is called as grid generation. 3.4 Grid topologies Generally, the governing equations may be transformed into finite element, finite difference, or finite volume equations. The cell types supported by FLUENT are followed as: triangular and quadrilateral cells in 2D are accepted, and in 3D, tetrahedral, hexahedral, wedge, and pyramid cells can be used FIG3.2: Different types of grids Structured versus Unstructured Grids The section presents a brief description of grid generation. The grid generation techniques available at present fall into two categories, namely: a) structured grid generation and b) unstructured grid generation. The structured grid generation techniques are based on the transformation of the complex physical domain into a simple computational domain, which is often chosen to be rectangular in shape (quadrilateral and hexahedron). The unstructured grid generations have been used with FEM (finite element method) procedure only, whereas structured grids have general applicability.[7] . 3.5 Types of structured grid In FLUENT, both single-block and multi-block structured meshes are acceptable, as well as hybrid meshes containing quadrilateral and triangular or hexahedral, tetrahedral, pyramid, and wedge cells Multiple Block Sometimes, it is possible to combine several structured computational meshes together to fit the physical domain. Multi- locking has the advantage of the speed of a structured solver, without as many mapping constraints apparent in single block meshes. Single Block In this technique, one computational grid is mapped to fit the whole physical domain. For even moderately complex shapes, it may be practically impossible to define a transformation which will map the outer surface of the computational domain to the required physical shape, while ensuring that the resulting grid has desirable attributes of smoothness.[7] 3.6 Mesh quality The quality of mesh plays a significant role in the accuracy and stability of the numerical simulations. The attributes associated with mesh quality are density of node, cell shape, smoothness and flow-field dependency. In many cases, poor resolution in critical regions can dramatically alter the flow characteristics. 3.7 The Capabilities of FLUENT This section provides a brief introduction to FLUENT and an explanation of its capabilities [10].FLUENT used in this project is a commercial code and a state-of-the-art computer program for modelling single and multiphase flows, heat and mass transfer, chemical reaction phenomena, and etc. in complex geometries. This code includes following components; FLUENT, the flow solver; GAMBIT, the pre-processor for geometry modelling and mesh generation; pre-PD, and etc. FLUENT solver utilizes a finite-volume, pressure-based, multiphase space marching method (SIMPLE algorithm), for solving the governing integral equations for conservation of mass and momentum, and for energy and other scalars such as turbulence and chemical species. It has the following modelling capabilities: à ¢Ã¢â€š ¬Ã‚ ¢ Flows in 2D or 3D geometries using triangular/tetrahedral, quadrilateral/hexahedral, or mixed (hybrid) grids that include prisms (wedges) or pyramids à ¢Ã¢â€š ¬Ã‚ ¢ In compressible or compressible flows à ¢Ã¢â€š ¬Ã‚ ¢ Steady-state or transient analysis à ¢Ã¢â€š ¬Ã‚ ¢ Laminar and turbulent flows à ¢Ã¢â€š ¬Ã‚ ¢ Newtonian or non-Newtonian flow à ¢Ã¢â€š ¬Ã‚ ¢ Convective heat transfer, including natural or forced convection à ¢Ã¢â€š ¬Ã‚ ¢ Coupled conduction/convective heat transfer à ¢Ã¢â€š ¬Ã‚ ¢ Radiation heat transfer à ¢Ã¢â€š ¬Ã‚ ¢ Inertial (stationary) or non-inertial (rotating) reference frame models à ¢Ã¢â€š ¬Ã‚ ¢ Multiple moving reference frames, including sliding mesh interfaces and mixing planes for rotor/stator interaction modelling à ¢Ã¢â€š ¬Ã‚ ¢ Chemical species mixing and reaction, including combustion sub models and surface deposition reaction models à ¢Ã¢â€š ¬Ã‚ ¢ Arbitrary volumetric sources of heat, mass, momentum, turbulence, and chemical species à ¢Ã¢â€š ¬Ã‚ ¢ Flow through porous media à ¢Ã¢â€š ¬Ã‚ ¢ One-dimensional fan/heat-exchanger performance models à ¢Ã¢â€š ¬Ã‚ ¢ Two-phase flows, including cavitations à ¢Ã¢â€š ¬Ã‚ ¢ Free-surface flows with complex surface shapes FLUENT can provides a number of boundary conditions, including: à ¢Ã¢â€š ¬Ã‚ ¢ Velocity or Pressure Driven Inlets/Outlets à ¢Ã¢â€š ¬Ã‚ ¢ Stationary or Moving Walls, with or without Friction à ¢Ã¢â€š ¬Ã‚ ¢ Periodic Boundary Conditions à ¢Ã¢â€š ¬Ã‚ ¢ Symmetry Boundary Conditions à ¢Ã¢â€š ¬Ã‚ ¢ Pressure Far-filed Boundary Conditions à ¢Ã¢â€š ¬Ã‚ ¢ Outflow Boundary Conditions à ¢Ã¢â€š ¬Ã‚ ¢ Inlet/Outlet Vent Boundary Conditions à ¢Ã¢â€š ¬Ã‚ ¢ Intake/Exhaust Fan Boundary Conditions As the Well turbine has a complex geometry for modelling, a large number of modelling capabilities are required of the CFD code for the turbine. FLUENT can incorporates all of these capabilities, and is most suitable for modelling the Wells turbine.[10] 4 ANALYSIS OF TASK 4.1 Theoretical calculation: The dimension used in this project is of prototype obtained from others experimental work, the model is designed and simulated by using the two different models shown in the table below. a [8] b[9] Table 4.1 Dimension of wells turbine The theoretical calculation of efficiency is done using the above two different dimension, the method used to calculate the efficiency is shown below. CALCULATION FOR EFFICIENCY: Similarly, CALCULATION AT 4 DEGREE ANGLE OF ATTACK: At ÃŽÂ ±= 4 degree The table below shows a calculated efficiency at different angle of attack calculated using the format shown above. ÃŽÂ ±(degree) ÃŽÂ ±(radians) W(relative velocity) à Ã¢â‚¬ °(rads/sec) Re Cl Cd ÃŽÂ · 4.00 0.07 143.36 42.45 1221641.45 0.40 0.01 21.86 5.00 0.09 114.74 42.39 977760.01 0.50 0.01 23.81 6.00 0.10 95.67 42.32 815255.46 0.60 0.01 25.18 7.00 0.12 82.06 42.24 699252.15 0.70 0.01 26.02 8.00 0.14 71.85 42.14 612312.29 0.80 0.01 26.44 9.00 0.16 63.92 42.03 544748.24 0.90 0.01 26.73 10.00 0.17 57.59 41.91 490747.45 1.00 0.01 26.78 11.00 0.19 52.41 41.77 446611.02 1.10 0.01 26.96 12.00 0.21 48.10 41.62 409873.06 1.20 0.02 26.97 13.00 0.23 44.45 41.46 378826.41 1.30 0.02 26.89 14.00 0.24 41.34 41.29 352251.70 1.40 0.02 26.90 15.00 0.26 38.64 41.10 329254.75 1.30 0.02 23.38 Table 4.2 : Efficiency at different angle Using the values of efficiency and the angle of attack from the above table (4.2) a direct relation between efficiency and the angle of attack is obtained which can be seen in the graph below (fig 4.3). Usig a Trendline option in Microsoft Excel an equation of direct relation between angle of attack and efficiency is obtained. The equation shown in the graph is a sixth order equation which is difficult to differentiate to obtained the angle at which the efficiency will be maximum,so a 2nd order equation is obtained from trendline option. Differentiating the equation gives the value of an angle at which the efficiency is max. From this procedure 12 degree is the calculated angle obtained at which the efficiency is max. Fig 4.3: Efficiency Vs. Angle of Attack y = -0.00026 + 0.00785 0.10484 + 0.70883 2.70462 + 6.5617x + 17.369 when x = 12 y = ÃŽÂ · = 25.98 % After substituting the value on angle obtained for maximum efficiency a difference between the two values is found and it is due to the R squared value. More closer the value of R square to unity more accurate results can be obtained. Equations obtained from Microsoft Excel at different orders are shown below:- Order 2 y = -0.12842 + 1.8889x + 20.336 R ² = 0.8797 Order 3 y = -0.00383 0.05482 + 1.4909x + 20.851 R ² = 0.8848 Order 4 y = -0.00524 + 0.13263 1.22762 + 5.2125x + 17.578 R ² = 0.9636 Order 5 y = -0.0015 + 0.02864 0.26813 + 0.86162 + 0.6489x + 20.649 R ² = 0.9869 Order 6 y = -0.00026 + 0.00785 0.10484 + 0.70883 2.70462 + 6.5617x + 17.369 R ² = 0.9945 Similarly using the dimension in table 4.1 (b) the calculated efficiency is show below ÃŽÂ ±(degree) ÃŽÂ ±(radians) W(relative velocity) à Ã¢â‚¬ °(rads/sec) Re Cl Cd ÃŽÂ · 4.00 0.07 143.36 78.24 916231.00 0.40 0.01 53.72 5.00 0.09 114.74 78.13 733319.93 0.50 0.01 58.49 6.00 0.10 95.67 78.00 611441.53 0.60 0.01 61.87 7.00 0.12 82.06 77.85 524439.06 0.70 0.01 63.93 8.00 0.14 71.85 77.67 459234.17 0.80 0.01 64.96 9.00 0.16 63.92 77.47 408561.14 0.90 0.01 65.68 10.00 0.17 57.59 77.24 368060.55 1.00 0.01 65.80 11.00 0.19 52.41 76.99 334958.23 1.10 0.01 66.24 12.00 0.21 48.10 76.72 307404.76 1.20 0.02 66.28 13.00 0.23 44.45 76.42 284119.78 1.30 0.02 66.07 14.00 0.24 41.34 76.10 264188.75 1.40 0.02 66.10 15.00 0.26 38.64 75.76 246941.04 1.30 0.02 57.46 TABLE 4.4: Efficiency at different angles Similarly in this case a graphical representation of Angle of Attack Vs. Efficiency is obtained which can be seen below and the equation represents a direct relation between efficiency and angle of attack. Fig 4.5 : Efficiency Vs. Angle of Attack Order 6 y = -0.00066 + 0.02925 0.62024 + 6.85633 42.0712 + 139.39x 138.43 R ² = 0.9945 when x =12 y = ÃŽÂ · = 64.24% Similarly using the order 2 equation to find the angle at which the efficiency will be maximum. The calculate angle using the same procedure as above is 12 degree at which the efficiency is maximum. . 4.2 Gambiet (Pre Processing):- The figure below shows an impeller of wells turbine designed with blades at 0 degree angle of incidence and using the dimension from the table 4.1 (a). Fig 4.6: Impeller of wells turbine Creating a model using gambiet and then meshing the geometry for which meshing size is selected based on the Reynolds number. Since the Reynolds number lies in the transational flow at the angle in which the efficiency is maximum,using turbulence boundary layer formula: à °Ã‚ Ã¢â‚¬ ºÃ¢â‚¬ ¦ =0.00269 The thicknes of boundary layer is 0.003 m. The mesh size comes to be 0.001m to get three elements in one layer to get fine meshing. In case of 3-Dimensional model the mesh elemet used is Tet/Hybrid. Checking the meshing quality the Aspect Ratio lies between 1 to 4. Boundary conditions is given for impeller is moving wall and interfaces is decided so that the fluid can be rotated within this volume. The mesh is exported for post processing in Fluent 4.3 Fluent (Post Processing) Steps used in fluent is as follows: Step 1 Opening the case file Step 2 Defining the grid interfaces Step 3 Grid check Step 4 Defining model as viscous and using K-epsilon (2 equation ) Step 5 Defining boundary condition In boundary condition fluid within the impeller is made to rotate at 40 rads/sec. The impeller is a moving wall rotating relative to cell zone at 0 rads/sec. Inlet velocity is 10 m/sec and the turbulence method selected is intensity and hydraulic cylinder. Step 6 Solution is converged after ilteraion 5 RESULTS AND DISCUSSION: The results shown below contains pressure contours, velocity vectors and pathlines at different cros-section of the models designed using the dimension from table 4.1 (a). Model with blades at 0 degree angle of incidence and inlet flow from top Model with blades at 0 and 2 degree(+) angle of incidence and inlet flow from top Model with blades at 0 and 2 degree(+) angle of incidence and inlet flow from bottom Model with blades at 2 degree(+) angle of incidence and inlet flow from top Model with blades at 2 degree(+) angle of incidence and inlet flow from bottom Biplane models Model with blades at 0 degree angle of incidece and inlet from top Model with blades at 0 degree angle of incidence and inlet flow from bottom Model with blades at 2(+)and 2(-) degree angle of incidence and inlet flow from top Model with blades at 2(+)and 2(-) degree angle of incidence and inlet flow from bottom Model with blades at 0 degree angle of incidence and inlet flow from top Model with blades at 0 and 2 degree(+) angle of incidence and inlet flow from top Model with blades at 0 and 2 degree(+) angle of incidence and inlet flow from bottom Model with blades at 2 degree(+) angle of incidence and inlet flow from top Model with blades at 2 degree(+) angle of incidence and inlet flow from bottom Biplane models Model with blades at 0 degree angle of incidece and inlet from top Model with blades at 0 degree angle of incidence and inlet flow from bottom Model with blades at 2(+)and 2(-) degree angle of incidence and inlet flow from top Model with blades at 2(+)and 2(-) degree angle of incidence and inlet flow from bottom Comparing the above graphical results under a range of 0-400 for comparison except the last two model. The table below shows the value of dynamic pressure (max) in Pascals of above design. From the table it can be seen that the introduction of two rows provides a better result in terms of dynamic pressure. After giving the installatoin angle the maximun dynamic pressure obtained is 1176 pascals by which we can say that the two rows impeller with and an installaition angle is better than the single rows . Assumptions: Various assumptions made to carry out the simulation is as follows: PATHLINES OF PARTICLES ON IMPELLER: AOA 0 INLET FROM TOP AOA 0 AND 2 DEGREE INLET AT TOP AOA 0 AND 2 DEGREE DEGREE INLET AT BOTTOM AOA 2 DEGREE INLET AT TOP AOA 2 DEGREE INLET AT BOTTOM TWO ROWS AOA 0 DEGREE INLET AT TOP AOA 0 DEGREE INLET AT BOTTOM AOA +2 -2 DEGREE INLET AT TOP AOA +2 -2 DEGREE INLET AT BOTTOM The results shown below is of the dimension used from table 4.1 (b). modelling of the wells turbine is divided into two parts theoretical and practical

Borderline Personality Disorder Essay -- Psychology

Literature Review Borderline Personality Disorder (BPD) can be described in simple terms as a condition in which sufferers experience long periods of emotional instability and troubled feelings about themselves and other people. These troubled feelings allow individuals to take impulsive measures and have trouble in their relationships (Bouchard, Sabourin, Lussier & Villeneuve, 2009). BPD basically comprises of unusual intensities of instability in mood and irrational thinking also referred to as splitting. Splitting in BPD involves a switch between negative perception of others and idealization (Sperry, 2003). This usually occurs along with irregular mood swings and can negatively impact on the existing relationships such as family, co-workers and friends (Abela, Skitch, Auerbach & Adams, 2005). This disorder manifests itself in a number of ways. Persons suffering from this disorder may demonstrate episodes of intense hatred and dislike and idealization in addition to chaotic personal and interperson al relationships (Bouchard, Sabourin, Lussier & Villeneuve, 2009). Sufferers may also be supportive of others and nurture them well hoping that these people will always be there for them and will satisfy all their demands. These people may also demonstrate unstable self-image, inappropriate behavior, and lack of self identity (Sperry, 2003). The sense of self of a person is usually totally impacted on. The psychological disturbance associated with this disorder, especially the one involving the sense of self of a person, may result in long episodes of dissociation (Ebner-Priemer et al. 2009). In the past, BPD was believed to be a set of symptoms between problems associated with mood and schizophrenia. These symptoms were believed... ...resulting in fear and arousal (Schmahl, Berne, Krause, Kleindienst, Valerius, Vermetten & Bohus, 2009). The work of dampening this arousal is carried out by the pre-frontal region of the brain. Brain imaging has revealed that personal differences in the capacity to activate areas of the prefrontal cerebral cortex, which is believed to activate inhibitory responses, predict the capacity to repress negative feelings (Williams Sidis, Gordon & Meares, 2006). Acetylcholine and norepinephrine in addition to serotonin are the main neurotransmitters in the circuit involved in the regulation of emotions. Imbalance of these neurotransmitters in conjunction with increased GABA activity is believed to have the capacity to result in intense mood swings similar to those of borderline personality disorder (Schmahl, Berne, Krause, Kleindienst, Valerius, Vermetten & Bohus, 2009).

Women in Sports 19th and 20th Century

Jen Pearlstein December 2, 2010 Kin 305 Women in Sports 19th and 20th Century Women’s participation in sports has changed over the centuries. In ancient times, men dominated societies. Women were viewed as the caretaker, a provider for life. Women who did participate were criticized and were thought of as threatening. In 18th century America, women were considered inferior to men because of the belief that women are the weaker sex. A woman’s purpose in life was to take care of the house, children, and husband.When they did want to participate in recreational sport, they need to be able to negotiate with men and with other women because societies did not make it easy for women to participate. For example, there was a woman who wanted to go sailing, but to do so she needed to deal with the owner of the boat, her husband and a neighboring couple, who was to accompany her, to do so. By the 19th century, there was a cultural shift for women. Women became frustrated with thei r role in society as house -keepers and caretakers and wanted to experience more with their life.They wanted to pursue educational and athletic opportunities to expand their role outside the home. At that time, however, there was opposition towards women participating in sports and receiving an education because they believed it would cause damage to their reproductive organs. Also, it was believed that sport developed manliness, a trait women should not process. But when women were given an education, it was shown that they could handle the ability to endure rigors of education, which helped them form a sense of independence and help provide athletic opportunities.Because of these growing opportunities, exercise for women became very popular and gained credibility. Catherine Beecher was one influential person in regards to physical education for women. She and Dioclesian Lewis developed the 1st women physical education programs to promote women’s health. They developed what is known as calisthenics, which is similar to Pilates. Colleges like, Wellesley College, started to require calisthenics and sports as part of their curriculum.Among the wealthy, outdoor activities such as archery, tennis, and golf became creditable and evolved into national associations, which sponsored the first national championships for women in those sports. Senda Berenson’s introduction of basketball to women in 1892 caused coeducational colleges, women’s colleges, and other schools to organize women’s teams across the United States. The three women who plotted the initial course of physical education and athletic competitions were Blanche M Thrilling, Mabel Lee, and Agnes Wayman.They were the leaders of women’s participation in athletics. However, Thrilling did provide the most leadership of the group. She organized a meeting to discuss the participation of women in sport. During this meeting the Athletic Conference of American College Women (CWA) was formed. However, they did not support the intercollegiate athletics for women. The reason why they opposed to intercollegiate athletics was because it led to professionalism, it was expensive, required coaches, and it led to nerve fatigue according to the organization.Because of the opposition of intercollegiate athletics for women, a way for them to compete against another school was through play days or sport days. Three or more colleges would meet for competition and would divide themselves up into teams without the school colors. This was the only form of intercollegiate competition that was available for women. These play day and sport days caused an increase in the involvement of women in sporting events.This led to the formation of organizations like the national committee on Women’s Sports, to provide rules and standards for athletic participation for women and girls. The AAU, Amateur Athletic Union, which was under the control of men, took control over women†™s athletics. This stirred up conflict amongst physical educators and other leaders like, Lou Henry Hoover, Blanche Thrilling, and Agnes Wayman who opposed the AAU control and wanted women to govern the organization not men.They were against it because â€Å" only women could understand the psychological, motivational, and physiological need for women. † (Costa & Guthrie, 91) Lou Henry Hoover was the leader of the National Amateur Athletic Federation, which was an organization that supported sport for everyone. She wanted to have a separate Women’s division because of the different ideal standards of women’s sport; and so was formed the women’s division of the NAAF. This organization set standards for women’s competition and encouraged them to participate in both school and non-school events.There still was a belief that women were too frail physically and mentally to participate in intense competition like Olympics. However, in 1932, Mildred â⠂¬Å" Babe† Didrikson disproved this belief by winning two Olympic gold medals and one silver medal in track and field. She had also won every golf tournament she competed in. Her great victories influenced the acceptance of higher- level competition, but there were still limitations due to the bias that sport build manliness, and therefore, women shouldn’t participate because it would strip their femininity.Because of discrimination, women did not have as much financial support and training opportunities as men did. It was not until the 1960’s, during the feminist movement, that women fought for equal rights. This caused a great influence for women and sports. There was the approval of inclusion of intercollegiate sport and the establishment of national championship for golf, gymnastics, track and field, badminton, swimming, diving, volleyball and basketball. But what really caused a growth of women’s athletics, was the result of Title IX of the Educationa l Amendment Act of 1972.This law was passed to eliminate sex discrimination in sports. This act provides equal opportunities for finances, coaching, and facilities. There was much growth of women’s athletics from ancient times to today. Even though you can still notice gender biases amongst women’s athletics since men’s sport are still more popular than the women’s, there are more opportunities and more organizations sponsoring women’s involvement and less discrimination than before.References Costa, Margaret D, & Guthrie, Sharon D. ( 1994). Women and Sport: Interdisciplinary Perspectives. USA: D. Margaret Costa and Sharon R. Guthriex Hutchens, Lisa C. (1998). Gender Equity Collegiate Sports: The Role of Athletic Associations. Initiatives (Washington D. C),v. 58 no. 4. Retrieved from File:///Users/Jen/Downloads/HWWilsonRecords. html Metchikoff, Robert A. (2010) A History and Philosophy of Sport and Physical Education From Ancient Civilizations to t he Modern World. Boston, MA: McGraw- Hill.

Heavy Metals in Science - Definition and Examples

Heavy Metals in Science s In science, a  heavy metal is a metallic element which is toxic and has a high density, specific gravity or atomic weight. However, the term means something slightly different in common usage, referring to any metal capable of causing health problems or environmental damage. Examples of Heavy Metals Examples of heavy metals include lead, mercury and cadmium. Less commonly, any metal with a potential negative health effect or environmental impact may be termed a heavy metal, such as cobalt, chromium, lithium and even iron. Dispute over Heavy Metal Term According to the International Union of Pure and Applied Chemistry or IUPAC, the term heavy metal may be a meaningless term because there is no standardized definition for a heavy metal. Some light metals or metalloids are toxic, while some high-density metals are not. For example, cadmium generally is considered a heavy metal, with an atomic number of 48 and specific gravity of 8.65, while gold typically is not toxic, even though it has an atomic number of 79 and specific gravity of 18.88. For a given metal, the toxicity varies widely depending on the allotrope or oxidation state of the metal. Hexavalent chromium is deadly; trivalent chromium is nutritionally significant in many organisms, including humans. Certain metals, such as copper, cobalt, chromium, iron, zinc, manganese, magnesium, selenium, and molybenum, may be dense and/or toxic, yet are required micronutrients for humans or other organisms. The essential heavy metals may be needed to support key enzymes, act as cofactors, or act in oxidation-reduction reactions. While necessary for health and nutrition, excess exposure to the elements can cause cellular damage and disease. Specifically, excess metal ions can interact with DNA, proteins, and cellular components, altering the cell cycle, leading to carcinogenesis, or causing cell death. Heavy Metals of Significance to Public Health Exactly how dangerous a metal is depends on several factors, including the dose and means of exposure. Metals affect species differently. Within a single species, age, gender, and genetic predisposition all play a role in toxicity. However, certain heavy metals are of grave concern because they can damage multiple organ systems, even at low exposure levels. These metals include: ArsenicCadmiumChromiumLeadMercury In addition to being toxic, these elemental metals are also known or probable carcinogens. These metals are common in the environment, occurring in air, food, and water. They occur naturally in water and soil. Additionally, they are released into the environment from industrial processes. Source: Heavy Metals Toxicity and the Environment, P.B. Tchounwou, C.G. Yedjou, A.J. Patlolla, D.J. Sutton, Molecular, Clinical and Environmental Toxicology  Volume 101 of the series  Experientia Supplementum  pp 133-164. Heavy metals a meaningless term? (IUPAC Technical Report)  John H. Duffus,  Pure Appl. Chem., 2002, Vol. 74, No. 5, pp. 793-807

Movie Review Paper essays

Movie Review Paper essays In recent research, Ive found that Pearl Harbor and In Love and War are two very similar films. They both portray an injured soldier from either World War I, or World War II, who falls in love with a nurse, while competing against a friend for her attention. Although Pearl Harbor received better ratings of the two, dont underestimate In Love and War. The films have exceedingly different endings, but an almost identical plot. Michael Bays, Pearl Harbor, a romantic and passionate film set in the 1940s at Pearl Harbor, Hawaii, is a twisted love story that will take the viewer for a few loops and turns as the tale of a friendship reveals that best friends are forever. The only weakness I came across was the movies length, being three hours long, but the strengths of the film compensate the weaknesses. Personally, this film is an all time favorite of mine because it is so easy to relate to. The love scenes are beautiful, and the friendships are priceless. The three hour long movie is a very intelligently-made film, a tale of love, war, and friendship. Danny Walker (Josh Harnett) and Rafe McCawley (Ben Affleck) grow up together in the Tennessee cornfields, bound like brothers by their love of flying. The two boys grow up to be men as they both become pilots in the U.S. Army Air Corps, where Rafe will soon fall in love with a volunteer nurse, Evelyn Johnson (Kate Beckinsale), whom he has a flirty check-up with before receiving his license to fly. Hes not good with letters and doesnt pass the eye exam, but explains to her how important this is to him, and she passes him with flying colors. The two begin to date and slowly fall into a love that they both think will never die. Rafe and Danny show out in front of the troops when they play a game of chicken in the air, barely missing each other in their separate planes to inspire the men, or so Rafe says (Pearl Harbor, Ben ...

The kaibab essay Essays

The kaibab essay Essays The kaibab essay Essay The kaibab essay Essay Ivan espinoza Biology October 28, 2013 Kaibab and wolf problem The Yosemite national park has a problem with over grazing of kaibab in the park and will cause over population and starvation and what the Grand Canyon national preserve game started to release wolfs into the park but near by farmers are out raged, because these wolves are killing their live stock. The farmers want the government to allow them to protect themselves from the wolves but the wolves are endangered species this will kill of this species for ever. With this reasons these could help this problem. one way to stop this is by forming a law on it being illegal to kill wolves. By this would prevent farmers from killing and being fined for doing so for example if a farmer where to kill one he will be fined a large price for killing the animal. Second way is by moving the wolf population away from farms and far away. By this if their still close to the kaibab but away from the farmers livestock will keep both sides happy. Third way is by adding hunters to kill of kaibab lowering the population. For this will make no need for wolves keeping them away from the livestock and both the over population problem and the killing of livestock will be solved. For these solutions it is possible to make both parties happy. By making a federal law against killing wolves, moving the wolves away from livestock somewhere farther but close to kaibab, and hiring hunters to kill kaibab so they dont require wolves to do it. These are all the solutions possible that the park could use to help these to problems.

Big brother Research Paper Example | Topics and Well Written Essays - 1500 words

Big brother - Research Paper Example In addition, children spend much time in the watching of television via the internet. The long time spent on the computer affects the physical health of children and adults alike. This also affects a person’s social life because it limits the time spent in socializing and making of social networks. Computers will lead to the destruction of humankind in the near future. The children’s perceptions of reality are compromised leading to inability to make sound judgments. In addition, the cognitive and the development of the child are affected. Communication has also been shifted to the use of computers. Staying long with a computer also contributes in the increase of weight among people because of lack of required body exercise. This also affects the eyesight of a person because of overexposure of the eyes to a lot of computer monitor screen light. Accessibility to the computer deprives many people of the power of imagination hence creativity and innovation power of people is compromised. The use of computers has paved way for computer data hackers and software piracy, which has resulted in the loss of confidential information from secured locations. In addition, this has resulted in the loss of billions of dollars through the cyber-crimes. ... The computers have resulted in less time for social affairs for many people resulting in domestic chaos and conflicts. This arises as a result of lack of time for socializing and problem-solving with friends and relatives of an individual. Unfortunately, the internet exposes the children to pornographic movies and videos, which corrupt their minds. This may also result in the commission of immoral acts by the children. Communication online is not a good channel to convey confidential information because of lack of trust for the two people from different graphical user interfaces. Technology makes people to cut ties with their friends and acquaintances, which erode the aspect of human co-existence. In fact, a person is turned into a robot. According to Meghanathan, Dhinaharan and Brajesh, there is a price paid in the use of technology though it makes life easy (32). Computer technology lacks the mechanism of rectifying the children after they commit mistakes due to technology-based ex posure like pornographic movie watching. The people encountered in the course of utilizing computer technology in using information, sometimes mislead the public with regard to acquisition of communication skills. For instance, the mumbling nature of most speakers on TV sets denies children the opportunity to learn the language through the media. In addition, the violence films broadcasted negatively impact children because  they seek to rehearse the taekwondo skills on TV and online movies. The vulgar language used in these instances is emulated by the children leading to immoral behavior among the children. Indeed, the swearing manifest in most movies is emulated by the children. These behaviors are provocative in society thus the

Religion Assignment Example | Topics and Well Written Essays - 250 words - 1

Religion - Assignment Example The epic â€Å"Book of Gilgamesh† was used to influence other people to magnify the king’s power. In fact, the real king Gilgamesh was worshipped after his death because of this book’s influence ( the house of royalty.nu,2010). Historically, a kingdom’s influence (during such civilization) is based on its religion. An example of a similar civilization is that of Egypt where people perceive the Pharaoh as a god. Hence, respect is immense for the said leader. â€Å"Astrologys ancient beginnings are also traced to Mesopotamia at least as far back as 2001 BCE. These early records reveal a complex cosmology in which the Sun, the Moon and the planets represented gods who possessed the power to direct and intervene in the course of physical events† ( metareligion.com) In fact, many people read the horoscope in newspapers scouring for any prediction about their future. This influence was ushered by the coming of New Age religion. In conclusion, old civilizations like Mesopotamia has highly-influenced religious beliefs which has permeated even modern -day societies

Services Marketing Essay Example | Topics and Well Written Essays - 2250 words

Services Marketing - Essay Example Besides, the industry continues to grow in leaps and bounds to a point that currently about one and a half of start ups are service oriented. One major stimulant to this growth is the long term economic growth of a majority of these economies which has led to particular emphasis on financial services, travel, entertainment, and personal care. These sectors form the bulk of service industry and the fact that far more businesses are starting on the same levels implying that there is eminent need for improved marketing concepts. These factors, as well as continued lifestyle changes, are coming as continuous pressures on the service industries. These are aspects and elements that Shostack had foreseen in the writing of his article breaking free from product marketing. At the time, product marketing was dominant as most industries and companies were bent on producing tangible products. In fact, any company which bordered on services was forced to adapt product marketing approaches. This w as bound to fail with time as consumers would, with time, adopt preferences and approaches that would clearly differentiate product and service aspects. At the time, marketers considered the difference between products and services as purely bordering on tangibility. However, Shostack sought to disagree with this assertion holding that there were multiple other factors which differentiated service marketing from product marketing. In this study, we implore on Shostack’s view on use of tangibility as the distinguishing factor. Beyond this, the study will look at modern assertions on the differences between product and service marketing. To further understand service marketing as different from product marketing this study will also look at two other contemporary studies and their positions as well assertions. First, we examine the views of Ruskin Brown as detailed in his book titled marketing your service business. Just as Shostack asserts, service marketing cannot be adopted to fit product marketing. Rather, there is need to develop new concepts which consider the various differences between products and services. Brown states that even though it might be possible to consider the marketing mix for a service as detailed under the 4Ps of products, there is great need to expand the mix in a way that it allows a more meticulous analysis of the ingredients essential for successful service marketing. The author further asserts that most businesses fail to attain their goals as they lack understanding of the workings of the various elements of the extended mix. This imminently means that they fail to come up with required action to address these factors. To this end, Brown provides a detailed analysis of the elements of extended mix that would offer businesses an opportunity to redress their failures. Failures are identified by Shostack as emanating from the uninformed treatment of services as products. Brown insists on the extended mix which incorporates such elements as process, people, physical evidence, time, and resource. Process relates to the fact that services are performed and consumed concurrently. They are neither created nor do they posses any shelf life. Rather, service is an experience and, therefore, the core of the process is to handle the

Professionalism vs Commercialism Essay Example | Topics and Well Written Essays - 750 words

Professionalism vs Commercialism - Essay Example Accordingly, the following analysis will seek to define some of the key ways in which commercialism affects professionalism, and the way in which growing levels of commercialism are affecting professions in general. It is the hope of this author that such a level of analysis will help to bring and more complete understanding with regards to the dynamics that currently shape the world in which we live. With regards to the way in which growing levels of commercialism currently affect professionalism, one does not need to look very hard to see the way in which they growing emphasis upon profits and profitability is defining the business world. As compared to but a few decades past, the level to which business indices are focusing upon overall profitability and the bottom line has greatly reduced the level of professionalism that can be exhibited on the personal level. This is of course due to the fact that greater and greater degrees of freedom with regards to how a given profession is performed are being removed in the face of increasing regulatory oversight and the means by which standardization is pushed above all else. Ultimately, the perennial back-and-forth that is realized between all individuals and seek to display a level of professionalism within their work is called into question with regards to the incessant drive to maximize profitability. Furthermore, due to the fact that more and more firms/entities are operating at the very margins, the overall level that professionalism within a given work spirit is stressed is necessarily reduced. In such a way, the ultimate mantra becomes a maximization of profit. Within such a dynamic, the means by which professionalism can be fostered from within the firm is necessarily reduced. This of course has a compound affect not only on the means by which work is accomplished but also with regards to how the individual worker views the importance of professionalism. Whereas before professionalism was encouraged both fro m the personal standpoint as well is a systemic standpoint, the current dynamic sees a situation in which more and more often the individual alone is the only one seeking to promote professionalism in the place of commercialism. Unfortunately, the fact of the matter is that many firms and entities do not realize that fostering greater professionalism within their respective employees would necessarily have a compound affect not only of producing a better quality of product/services but would also have the ancillary affect of increasing profitability and serving mankind to a greater degree. However, like so many choices within the business world, the short-term gains are championed over long-term eventualities. In this way, professionalism is cheated out of its do merit as a means of maximizing the short-term benefits that commercialization and profit generation can necessarily entail. As a means of looking forward, it must be understood by the reader that a far better approach would be to realize that although commercialization holds the potential to generate profits, so too does fostering a greater and higher appreciation for professionalism within whatever business entity/firm is in question (Day 166). As with so many of the solid business choices that exists within theory and application, recent history as evidenced the fact that as a means of hoping to generate impressive numbers and

Sources of finance For Expansion Essay Example | Topics and Well Written Essays - 750 words

Sources of finance For Expansion - Essay Example The most intriguing phenomena associated with IPOs are the poor performance in the long run. Generally the period of evaluation is from one to three years. Take any of the threshold IPOs that are sure to under perform. Researches have shown that this underperformance will last up to three to five years. Ritter and welsh (1992) clearly shown that there is 23.4 % for a three year buy and hold strategy. There are many explanations presented why IPO under perform when compared to any threshold. After beginning of the company its shares are sold to the public to accumulate the initial capital for the company. To purchase the necessary equipment and raw material the company needs this amount. Without the initial capital no company can begin their basic operations. The reason behind selling shares to the general public is, as the public constitute a large population who can generate huge amount of capital and they also constitute a large context of population who are also the consumers for the products being manufactured and sold by this company. The reason behind general public buying the shares of the companies are that the returns gives by the company on the shares purchased is proportional to the profit of the company. If the company is making huge profits then a part of the profit is divided and equally distributed to the shareholders with respect to there purchased quantity. Limited equi Rajinder Deane October 13, 2006 Page 3 Limited equity financing is used by most of the small or growth stage businesses. Whereas in debt financing, funds pour in from different quarters like from friends, relatives, etc. Venture capitalists are the most common source of equity funding. Venture capitalists may be institutional risk takers, financial institutions, wealthy persons, etc. and most of them specialize in industries. Commercial finance companies, financial institutions, banks, savings and loans, Lloyds Bank small business, etc. are some of the sources for debt financing. Because of their positive impact on the whole economy local and state government encourage the growth of the small companies. In debt financing additional funds comes from friends, family, relatives, and industry colleagues, etc when capital investment is smaller. When the equity to debt ratio of the firm is high then debt financing should be taken. If the proportion of the debt to equity ratio of the firm is high then it is advised that the owners should increase their equity investment, that way they cannot jeopardize firm's survival. Sincerely, Jack Stroth References 4hb.com. What is the Business Letter Format Retrieved October 12 2006, .

Human Thought Essay Example | Topics and Well Written Essays - 2250 words

Human Thought - Essay Example Reflective practice is a relative issue here, and there are basically two different dimensions to reflective practice, and two models in particular which are involved - the Johns' model of reflective practice, and the Schon's model of reflective practice. The aim of this paper is to discuss human thought in all of its complexity, in particular to address the matter of critical thinking and how it manifests itself in different areas of life. As well to be discussed here is the issue of reflective practice and the models that are most significant. By discussing all of this as well as any and all other key and related issues, we will be able to come to a much more informed and knowledgeable understanding on the subject of human thought as a whole, as well as on the matters of critical thinking and reflective practice and how these two subjects are related to the psychological aspect of human thought. This is what will be dissertated in the following. Human thought is a psychological issue which is incredibly complex, and to which many different subjects are contained within. In more recent years, a new discipline has arisen, which argues that human behavior can be understood in terms of evolutionary processes, and critical thinking is considered as being an incredibly intricate and significant part to human thought overall. In fact, critical thinking is something which is considered as having an on-going concern with the problems that are inherent in human thinking, and "It includes, but is not exhausted by the mental process of analyzing or evaluating information, particularly statements or propositions that people have offered as true. It includes, but is not limited to, a process of reflecting upon the meaning of statements, examining the offered evidence and reasoning, and forming judgments about the facts" (Wikipedia, 2007). The process of critical thinking, then, is one which involves acquiring information as well as evalu ating it in order to reach a well-justified conclusion or answer. As well, a large part of critical thinking really goes above and beyond that of informal logic and includes a certain assessment of beliefs an identification of prejudice, bias, propaganda, self-deception, distortion, misinformation, and so on. It is considered that "Critical thinking is very important, as it allows purposes, questions, information, inferences, concepts, assumptions, implications, points of view, beliefs, and situations to be analyzed, evaluated and restructured, decreasing the risk of acting on a false premise. The loss of this faculty through injury, intoxication, denial, narrow-mindedness or subversion can lead to a greater risk of one making a fatal error" (Cartwright, 2003). There are basically two major aspects in particular which are involved within the area of critical thinking, and they are: a set of cognitive skills, intellectual standards, and traits of mind; and the ability and intellectua l commitment to use those structures to improve thinking and guide behavior. It is incredibly important to realize the fact that critical

Professionalism vs Commercialism Essay Example | Topics and Well Written Essays - 750 words

Professionalism vs Commercialism - Essay Example Accordingly, the following analysis will seek to define some of the key ways in which commercialism affects professionalism, and the way in which growing levels of commercialism are affecting professions in general. It is the hope of this author that such a level of analysis will help to bring and more complete understanding with regards to the dynamics that currently shape the world in which we live. With regards to the way in which growing levels of commercialism currently affect professionalism, one does not need to look very hard to see the way in which they growing emphasis upon profits and profitability is defining the business world. As compared to but a few decades past, the level to which business indices are focusing upon overall profitability and the bottom line has greatly reduced the level of professionalism that can be exhibited on the personal level. This is of course due to the fact that greater and greater degrees of freedom with regards to how a given profession is performed are being removed in the face of increasing regulatory oversight and the means by which standardization is pushed above all else. Ultimately, the perennial back-and-forth that is realized between all individuals and seek to display a level of professionalism within their work is called into question with regards to the incessant drive to maximize profitability. Furthermore, due to the fact that more and more firms/entities are operating at the very margins, the overall level that professionalism within a given work spirit is stressed is necessarily reduced. In such a way, the ultimate mantra becomes a maximization of profit. Within such a dynamic, the means by which professionalism can be fostered from within the firm is necessarily reduced. This of course has a compound affect not only on the means by which work is accomplished but also with regards to how the individual worker views the importance of professionalism. Whereas before professionalism was encouraged both fro m the personal standpoint as well is a systemic standpoint, the current dynamic sees a situation in which more and more often the individual alone is the only one seeking to promote professionalism in the place of commercialism. Unfortunately, the fact of the matter is that many firms and entities do not realize that fostering greater professionalism within their respective employees would necessarily have a compound affect not only of producing a better quality of product/services but would also have the ancillary affect of increasing profitability and serving mankind to a greater degree. However, like so many choices within the business world, the short-term gains are championed over long-term eventualities. In this way, professionalism is cheated out of its do merit as a means of maximizing the short-term benefits that commercialization and profit generation can necessarily entail. As a means of looking forward, it must be understood by the reader that a far better approach would be to realize that although commercialization holds the potential to generate profits, so too does fostering a greater and higher appreciation for professionalism within whatever business entity/firm is in question (Day 166). As with so many of the solid business choices that exists within theory and application, recent history as evidenced the fact that as a means of hoping to generate impressive numbers and

Human Thought Essay Example | Topics and Well Written Essays - 2250 words

Human Thought - Essay Example Reflective practice is a relative issue here, and there are basically two different dimensions to reflective practice, and two models in particular which are involved - the Johns' model of reflective practice, and the Schon's model of reflective practice. The aim of this paper is to discuss human thought in all of its complexity, in particular to address the matter of critical thinking and how it manifests itself in different areas of life. As well to be discussed here is the issue of reflective practice and the models that are most significant. By discussing all of this as well as any and all other key and related issues, we will be able to come to a much more informed and knowledgeable understanding on the subject of human thought as a whole, as well as on the matters of critical thinking and reflective practice and how these two subjects are related to the psychological aspect of human thought. This is what will be dissertated in the following. Human thought is a psychological issue which is incredibly complex, and to which many different subjects are contained within. In more recent years, a new discipline has arisen, which argues that human behavior can be understood in terms of evolutionary processes, and critical thinking is considered as being an incredibly intricate and significant part to human thought overall. In fact, critical thinking is something which is considered as having an on-going concern with the problems that are inherent in human thinking, and "It includes, but is not exhausted by the mental process of analyzing or evaluating information, particularly statements or propositions that people have offered as true. It includes, but is not limited to, a process of reflecting upon the meaning of statements, examining the offered evidence and reasoning, and forming judgments about the facts" (Wikipedia, 2007). The process of critical thinking, then, is one which involves acquiring information as well as evalu ating it in order to reach a well-justified conclusion or answer. As well, a large part of critical thinking really goes above and beyond that of informal logic and includes a certain assessment of beliefs an identification of prejudice, bias, propaganda, self-deception, distortion, misinformation, and so on. It is considered that "Critical thinking is very important, as it allows purposes, questions, information, inferences, concepts, assumptions, implications, points of view, beliefs, and situations to be analyzed, evaluated and restructured, decreasing the risk of acting on a false premise. The loss of this faculty through injury, intoxication, denial, narrow-mindedness or subversion can lead to a greater risk of one making a fatal error" (Cartwright, 2003). There are basically two major aspects in particular which are involved within the area of critical thinking, and they are: a set of cognitive skills, intellectual standards, and traits of mind; and the ability and intellectua l commitment to use those structures to improve thinking and guide behavior. It is incredibly important to realize the fact that critical

Cause and Spread of Infection Essay Example for Free

Cause and Spread of Infection Essay 1.1. Identify the differences between bacteria, viruses, fungi and parasites All 4 are different types of pathogens Bacteria is a single celled organism that multiply by themselves. They lives within and on most living and nonliving things. The majority of bacteria’s are harmless and beneficial to the human body but some can cause infectious diseases. A bacterium usually affects one part of the body and doesn’t spread across or through the body. Bacterial infections are normally treated with a cause of antibiotics. Viruses: are made up of genes and proteins that spread throughout the body by invading the body’s own cells so they can reproduce and multiply in the body. They use the body’s cells as a host because they are unable to multiply on their own. They are normally spread directly from human to human. Viruses can be very tough and there are not many effective medicines available for viral diseases. There are currently 21 families of viruses known to cause disease in humans. Fungi: like to grow in warm, moist places. Some fungi can be beneficial to us such as penicillin, but certain types of fungi can be harmful to our health. Like bacteria and viruses, some fungi can act as pathogens. Human fungal diseases can occur due to infection or fungal toxins. Symptoms for fungal diseases can be as common as itching, coughing, fever, wheezing, but they can also be as serious as meningitis or even death Parasites are organisms that use other organism for its survival. They draw nourishment and other needs from its host organism. Parasites that cause infection and disease are known as Pathogenic parasites 1.2. Identify common illnesses and infections caused by bacteria, viruses, fungi and parasites Bacteria: Ecoli/food poisoning, MRSA, CDIF, Sickness and diarrhea Viruses: Common cold, Influenza, Chicken pox, Cold sores, HIV Fungi: Athletes foot, Thrush, yeast infections, Ring Worm Parasites: Tape worms, Scabies, Malaria 1.3 Describe what is meant by â€Å"infection† and â€Å"colonisation† An infection is an invasion of the body by pathogens i.e. Bacteria and viruses which can cause disease and infections Colonisation is when microorganisms live on or in a host organism but do not invade tissues or cause damage 1.4 Explain what is meant by â€Å"systemic infection† and â€Å"localised infection† A â€Å"localised infection† is an infection that is limited to a specific body part or region of the body A systemic infection is when the infection is spread throughout body and affects a number of different organs and tissues 1.5 Identify poor practices that may lead to the spread of infection †¢Not wearing provided personal protective clothing when dealing with personal care and bodily fluids †¢Not changing PPE clothing in-between dealing with service user’s personal care. †¢By walking out in to corridors in PPE clothing whilst in the middle of deal with personal care. †¢Not washing hands correctly †¢Not disposing of solid and wet pads in the correct manner. .2.1 conditions needed for growth of microorganisms Temperature this will be between 8-63 degrees cc this is also called the danger area as bacteria multiply very fast. You will also need food for the bacteria or parasites for feed on. Moisture is another key important fact that will make growth easier Time is another important areas as more time made available as other conditions remain constant makes it easy. 2.2 and 2.4 Infective agents enter the body through open skin, wounds, saliva, blood exchange, oral areas such as mouth, anus. the person infected gets in contact with an infected person and through the media listed and appropriate condition then multiplication will take place and that will lead to infection. 2.3 common sources of infection †¢ Patient as a source for a) Air borne †¢ Patient as a source b) Blood borne †¢ Sexually transmitted †¢ Direct contact †¢ Fecal /oral tansmission †¢ Employees eg MRSA transmission †¢ Animals as source of infection. 2.5 Poor hygiene is most important factor that will always make it likely for any infection to take place. Lack of hand washing, ensuring that we get appropriate treatment and to be contained in one area until we heal or doctor gives us clean bill of health.

Achieving Competitive Advantage Through Is Information Technology Essay

Achieving Competitive Advantage Through Is Information Technology Essay What are the identified problems, issues and short comings in addition to above two areas of studies how can Srilankan Airlines achieve competitive advantage by changing the effectiveness in their management system using IS/IT? 5.0 Background Information System and Information Technology (IS/IT) has become the core feature for many business successes in the globe. IT applications are mostly used to help organizations to do its day to day work and to gain competitive advantage while reducing competitive disadvantage and to meet other business objectives which organizations need. According to Ross and Fenny (1999), in the mid of 1980s, they have identified the IS/IT as a key weapon which helps to achieve the competitive advantage for any organization. Also Ward and Daniel (2006) has stated in their book of Benefits Management that in the last four decades there was a huge IS/IT requirement for organizations to meet its requirement to achieve the competitive advantage. Furthermore Ward and Daniel (2006), mentioned that with the early stage of IS/IT adoption helps to automate some routine activities to reduce the efficiency and reduce the cost while delivering a good operational process with a good product. According to Croteau and Bergeron (2001); Kearns and Lederer (2000); Zhang and Lado (2001) cited in Garg, Joubert and Pellissier (2005) p.33, mentioned that applications which are support to achieve the competitive advantage referred to as the strategic management information technology and it helps to achieve the best business performance for the organizations. According to Burn and Martinsons (1997); Ho (1992); Wiseman (cited in Henry and Pun (2000), stated that it is possible to accomplish the competitiveness of companies by using new opportunities which offered to the firm by strategic information systems. Buhalis (2004), has mentioned in his research paper about e-airlines, that airlines have been investing heavily for Information Communication Technology since the 1950s and they have used the IS/IT as a competitive tool to achieve their business targets. Also he has mentioned some examples that, in 1962, the American Airlines introduced its SABER computer reservation systems as an alternative solution for their previous manual data entering system expanding its Boeing fleet by 50%. According to the 12.manage.com website, with the huge business growth the IS/IT has given more impact to those businesses and mean while there is a huge development in IS/IT systems. Strategic planning helps the organizations to identify their IS application and its Information Technology which support to gain the competitive advantage over other competitors. Strategic planning is a tool which support for the organizing part for the present on the basis of the projections of the desired future. Information technologies are increasingly regarded as strategic resources of an organization. Indeed it is a potential use of IS/IT as a competitive weapon has become a popular clichà ©. Also the Management play an important part of an organization. Its main role is to unite people together in order to accomplish achievable goals. Management mobilize or allocate resources to different department like Human resource, Finance, IT department, etc. and organize these resources in such a way that organizational strategic goals are accomplished easily in the long run. Management also takes vital part in planning, organizing, leading and controlling. It gives direction, aligns and achieves organization goals with available resources. As shown in the allbusiness.com website, there are three different types of levels available in management hierarchy. Those are categorized as strategic, tactical and operational. To get the maximum benefit out of the company business intelligence, the organization needs to have all three levels strategic, tactical and operational working in conjunction with one another. According to Steiner (1979), in the role of management scenario, mainly the strategic level is more important and it is the highest level and usually done by senior management level. Basically the decisions on the objectives, committing money, employee and time are done within this strategic level. Tactical planning level it does the implementation of the strategic plan stages such as combine the available resources and review alternatives. Within the operational level, it is much more detailed of strategic and tactical levels. In this level the managers chosen to work the plan develop a specific plan to execute the strategic plan. Therefore the management role and the IS/IT strategies are playing a huge role to gain the competitive advantage. As stated in Srilankan Airlines annual report (2009), their IT division involving and giving huge support role to all departments in the Srilankan Airline during a year of multiple changes. Srilanka Airlines IT department is an independent department within the organization. Therefore it is an entity as a part of the process to align all divisions with the corporate strategy in an IT perspective and it is helping the entire organization to benefit from modern technology and improve their processes and productivity while gaining competitive advantage. However according to Porter (Cited in Clarke 2001) p.114, mentioned that, he has proposed to gain the competitive advantage; the firm must be based on one of three generic strategies. Those are categorized as differentiation, cost leadership and the focus. Considering the Porters differentiation strategy, the Srilankan Airlines has provided greater customer convenience through check-in facilities on mobiles was completed. This mobile fac ility is mainly focuses on the Srilankan Airlines customers. Comparing with other airlines, the Srilankan Airline has been using the differentiation strategy in their organization. Therefore further investigation is required to identify whether the role of management involvement is really beneficial to achieve the competitive advantage using IS/IT or not. Considering all these general factors which mentioned in the above paragraphs, it is clear that role of management involvement and IS/IT involvement are the main key factors of gaining competitive advantage for any organization. Therefore this research is carried out to find whether the same concepts which have been described in above paragraphs can apply to the Srilankan Airlines to achieve competitive advantage while comparing with the general findings. 6.0 Literature Review 6.1 Introduction IS/IT have revolutionized the entire business world. So far the organizations derive the competitive advantage applying technology to their industry. Mostly the competency will be changeable among the competitors base on their IT usage and the involvement of role of management. The airline industry in particular has fostered a dependency on IS/IT for their operational and strategic management. Airlines were early adopters of Information Systems Information Technology and have a long history of technological innovation, in comparison to many other business industries. (Buhalis 2004). IT applications are mostly used to help organizations to its day to day work and to gain competitive advantage while reducing competitive disadvantage and to meet other business objectives which organizations need. Following sections describe about what is competitive advantage and how the organizations achieve competitive advantage using IS/IT with involvement of management roles. 6.2 Competitive Advantage As stated in 12manage.com web site, if a company probably able to make a profit in excess of its cost of capital, because it has achieved a competitive position which offers some of and edge over its potential rivals. To achieve such a competitive edge, it typically takes the formulation and execution of business strategy. To develop a competitive advantage, the company must possess value creating activities which cannot be duplicated by any other organization. According to Day and Wensley (cited in 12manage.com website 2010), mentioned that two sets of sources are there which involved in creating competitive advantage. Those two are categorized as superior skills and superior resources. As proposed by Porter (1985), that to gain the competitive advantage, the firm must be based on one of three generic strategies. Those are categorized as differentiation, cost leadership and the focus. The differentiation means that whatever the product should be different from other vendors and the cost leadership makes firm to produce the products in lower cost. This will help to increase the profit margins to the firm. Focus means that the firms must concentrate about the present market and need to identify where are they comparing to other vendors and finally based on the calculation they must perform better than other competitors using their skills and knowledge. In some other way Treacy and Wiersema (1995), proposed another popular generic framework for gaining competitive advantage. Within this framework, a firm typically will choose to emphasize one of three value disciplines: product leadership, operational excellence, and customer intimacy. Operational Excellence As suggested by Ward and Peppard (2002, p.112), Operational Excellence means enabling products and services to be obtained reliably, easily and cost-effective by customers. With this competency-based strategy it implies a business strategy which can do better improvement to the organization than other competitors and be able to deliver both cost-effective and reliable quality of customer contentment. Product Leadership Further to Ward and Peppard (2002, p.114), product leadership means continuing product innovation meeting customers needs. This strategy implies not only creativity in developing new products and enhancing existing ones, but also astute market knowledge to ensure that they sell. Customer Intimacy It has been argued (Ward and Peppard 2002, p.113), that the Customer Intimacy indicates targeting markets very precisely and tailoring products and services to the needs of particular customer groups. The purpose of here is not just to satisfy but to please customers by understanding their needs and meeting them on every occasion. This can be obviously being expensive but it can build long-term customer loyalty. However further to Porter (1985), he has define a frame work model call Five Forces diagram which capture the main idea of porters theory of competitive advantage. The five forces model defines the rules of any kind of competition in any industry. Further to Porter, these five forces determine industry profitability. Also the five forces frame work point out that what is most important and it helps organization to capture their targets for long-term advantage. The five competitive forces are typically shown in the following diagram 1.0; Diagram 1.0: Porters Five Forces Elements of Industry Structure Source: Porter, (1985), p.6 The collection of strength of the five forces can be varies from industry to industry. In the meantime the strength each of the five forces also can change. Further to Porter and Miller (1985), stated that information technology can alter the five forces to the industry attractiveness. The Five Forces framework highlights what is important and directs managers towards those aspects most important to long-term advantage of the organization. According to Porter (1985), has explained the Five Forces elements as follows; Bargaining Power of Suppliers The term suppliers comprises all sources for inputs that are needed in order to provide goods or services. There are several elements for Supplier bargaining power is likely to be high. The market is dominated by a few large suppliers rather than a fragmented source of supply, There are no substitutes for the particular input, The suppliers customers are fragmented, so their bargaining power is low, The switching costs from one supplier to another are high, There is the possibility of the supplier integrating forwards in order to obtain higher prices and margins. This threat is especially high when The buying industry has a higher profitability than the supplying industry, Forward integration provides economies of scale for the supplier, The product is undifferentiated and can be replaces by substitutes, Switching to an alternative product is relatively simple and is not related to high costs, Customers have low margins and are price sensitive, Customers could produce the product themselves, The product is not of strategically importance for the customer, Threat of New Entrants The competition in an industry will be the higher, the easier it is for other companies to enter this industry. In such a situation, new entrants could change major determinants of the market environment (e.g. market shares, prices, customer loyalty) at any time. There is always a latent pressure for reaction and adjustment for existing players in this industry. The threat of new entries will depend on the extent to which there are barriers to entry. These are typically Economies of scale (minimum size requirements for profitable operations), High initial investments and fixed costs, Cost advantages of existing players due to experience curve effects of operation with fully depreciated assets, Brand loyalty of customers Protected intellectual property like patents, licenses etc, Scarcity of important resources, e.g. qualified expert staff Access to raw materials is controlled by existing players, Distribution channels are controlled by existing players, Existing players have close customer relations, e.g. from long-term service contracts, The buying industry hinders the supplying industry in their development (e.g. reluctance to accept new releases of products), The buying industry has low barriers to entry. Bargaining Power of Customers Similarly, the bargaining power of customers determines how much customers can impose pressure on margins and volumes. Customers bargaining power is likely to be high when They buy large volumes, there is a concentration of buyers, The supplying industry comprises a large number of small operators The supplying industry operates with high fixed costs, High switching costs for customers Legislation and government action Threat of Substitutes A threat from substitutes exists if there are alternative products with lower prices of better performance parameters for the same purpose. They could potentially attract a significant proportion of market volume and hence reduce the potential sales volume for existing players. This category also relates to complementary products. Similarly to the threat of new entrants, the treat of substitutes is determined by factors like Brand loyalty of customers, Close customer relationships, Switching costs for customers, The relative price for performance of substitutes, Current trends. Competitive Rivalry between Existing Players This force describes the intensity of competition between existing players (companies) in an industry. High competitive pressure results in pressure on prices, margins, and hence, on profitability for every single company in the industry. Competition between existing players is likely to be high when There are many players of about the same size, Players have similar strategies There is not much differentiation between players and their products, hence, there is much price competition Low market growth rates (growth of a particular company is possible only at the expense of a competitor), Barriers for exit are high (e.g. expensive and highly specialized equipment). Above mentioned forces determine the intensity of competition and hence the profitability and attractiveness of an industry. At the primary level, firms create competitive advantage by perceiving or discovering new and better ways to compete in an industry and bringing them to market, which is ultimately an act of innovation. Innovations shift competitive advantage when rivals either fail to perceive the new way of competing to respond. There can be significant advantages to early movers responding to innovations, particularly in industries with significant economies of scale or when customers are more concerned about switching suppliers. Some of the typical causes of innovations which shift competitive advantage are categorised as follows: new technologies new or shifting buyer needs the emergence of a new industry segment shifting input costs or availability changes in government regulations Over the past two decades, researches have proposed several strategic frameworks to identify the IT applications that are likely to provide competitive advantage. It is important to identify the difference between IS, IT and information and the generic benefits of IS/IT as well. Therefor the following will discuss about the IS/IT strategies and how it beneficial for the business sector. 6.3 IS/IT Strategies It has been argued by Clarke (2001), p.115, that informations passes in-between individuals and groups with a given social environment. Information systems may identify as a system which supports and enable to pass within the specific environment. Distinguish between IS, IT and informations and the way its link with each other is showing in the following figure 1.1. Information Support Information Systems Enables Information Technology Figure: 1.1 The Nature of Information Technology, Information Systems and Information Source: Clarke (2001), p.116 There are several benefits which can be gained from IS/IT. According to Farbey et.al (cited in Ward and Danniel, 2006), stated that there are five elements included in the organizational structure. Following table 1.2 shows the five elements of and organization and its description. Organizational Structure Elements Description Strategic Includes people charged with overall responsibility for the organizations direction Management Includes middle managers who operate in order to transform the strategic vision into operational reality Operational Refers to people who perform work related directly to the production of products and services Functional Includes people who serve the organization by affecting others work Support Includes people who provide support for the organization outside the basic production of goods or services. These are often specialist in certain disciplines. Table: 1.2 The five elements of an organization Source: Ward and Daniel (2006), p. 7 However table 1.2 shows that there is significant numbers of benefits can apply to the management and to the organization which helps to gain the significant development. As argued by Ward and Daniel (2006), the strategic benefits are more involved in business organizations development and to develop a new business models where IS/IT play a main role. As stated by Ferbey et al. (cited in Ward and Daniel 2006), the term of management describe about the activities of middle management in an organization. These manager levels operate business unit levels and take decision making and also responsible for the development of their staff members. Further to Farbey et al. (cited in Ward and Daniel 2006), the operation benefits are classifieds in to goods and services which any firm provides. The main target is to get a worthy output which is differentiating from other vendors. While having a good operational benefits and giving it to the customers, the company can gain more benefits while ga ining competitive advantage. Also in functional and support benefits, it identifies certain activities which are support for the core activities which relate to company production of the goods and services. At the level of strategy implementation, the firms perform discrete activities conceiving new ways to conduct activities, employing new procedures, new technologies, or different inputs. As suggested by Porter (1980), the value chain is a systematic way of examining all the activities a firm performs and how they interact. It scrutinizes each of the activities of the firm (e.g. development, marketing, sales, operations, etc.) as a potential source of advantage. The value chain maps a firm into its strategically relevant activities in order to understand the behaviour of costs and the existing and potential sources of differentiation. All the activities in the value chain contribute to buyer value, and the cumulative costs in the chain will determine the difference between the buyer value and producer cost. A firm gains competitive advantage by performing these strategically important activities more cheaply or better than its competitors. One of the reasons the value chain framework is helpful is because it emphasizes that competitive advantage can come from anywhere along the value chain. It is important to understand that how a firm fits into the overall value system and it should include the value chains of its suppliers, channels, and buyers. Porter (1996) builds on his ideas of generic strategy and the value chain to describe about the strategy implementation in more detail. Competitive advantage requires that the firms value chain be managed as a system. Positioning choices determine not only which activities a company will perform and how it will configure individual activities, but also how they relate to one another. This is crucial, since the essence of implementing strategy is in the activities choosing to perform different activities than rivals. A firm is more than the sum of its activities. Further to Porter (1996), a firms value chain is an interdependent system or network of activities which has connected by linkages. Linkages create trade-offs requiring optimization and coordination. Porter (1986), has describes three choices of strategic position that influence the configuration of a firms activities: Variety-based positioning based on producing a subset of an industrys products or services; involves choice of product or service varieties rather than customer segments. Makes economic sense when a company can produce particular products or services using distinctive sets of activities. (i.e. Jiffy Lube for auto lubricants only) Needs-based positioning similar to traditional targeting of customer segments. Arises when there are groups of customers with differing needs, and when a tailored set of activities can serve those needs best. (i.e. Ikea to meet all the home furnishing needs of a certain segment of customers) Access-based positioning segmenting by customers who have the same needs, but the best configuration of activities to reach them is different. (i.e. Carmike Cinemas for theatres in small towns) Porters major contribution with activity mapping is to help explain how different strategies, or positions, can be implemented in practice. The key to successful implementation of strategy, he says, is in combining activities into a consistent fit with each other. A companys strategic position, then, is contained within a set of tailored activities designed to deliver it. The activities are tightly linked to each other, as shown by a 1.3 diagram of sorts. Fit locks out competitors by creating a chain that is as strong as its strongest link. If competitive advantage grows out of the entire system of activities, then competitors must match each activity to get the benefit of the whole system. Figure 1.3 Activity Map Source: Porter, Harvard Business Review (1996) Porter defines three types of fit: simple consistency first order fit between each activity and the overall strategy reinforcing second order fit in which distinct activities reinforce each other Optimization of effort coordination and information exchange across activities to eliminate redundancy and wasted effort. To manage all these IS/IT strategies within the organizations and to achieve the competitive advantage, the management roles are also playing a huge role within the organization. The following section will talk about the levels of Management roles and how it supports to gain the competitive advantage for the organization. 6.4 The Role of Management To achieve the competitive advantage, the Management levels also contribute hugely. Efficient IS/IT systems enables management to co-ordinate, organise and to control with a good plan. It gives information needed for strategic planning and for day to day operations. Therefore senior executives, strategic planners and information system managers are increasingly looking forward to get the use of IS/IT to achieve the competitive advantage. To prove this, there are several explanations in recent trends. Bakok and Treacy (1986), has identified that the underutilization of IS/IT as a serious problem for both IS/IT and for organization business managers. The main reason to narrow down to the IS/IT base competitive advantage are senior managements ignorance of IS/IT and its potential use and the poor communications among the groups who deals with IS/IT and the rest of the business teams. Also the resistance to change among both IS/IT and business personal and a lack of focus about the oppor tunities are some serious reasons which organizations are facing. According to White (2009), there are three different of management levels are included within the management hierarchy. These different levels are categorized as strategic, tactical and operational. According to scitation.aip.org web site, when in a strategic level, organisations must manage total demand whilst they acquire new infrastructure, technology or skills. At the tactical level the aim is align resources to enhance customer value in the most profitable way. Operational level, the management aims to provide reliable delivery performance within supply constraints. Getting the balance right between strategic, tactical and operational decisions will have any business powering ahead. According to Gerber (1995), strategic decisions play a biggest role in the business. Its decisions focus typically external to the business oriented and its decision making create forward thrust in the business. This strategic business will include the following points. What business are you in? What is your vision for the business? Whats your business identity? What do you stand for? Which direction is the business headed? How will the business compete? Also Gluck, Kaufman and Walleck (1982), have suggested that strategic management in most companies evolves along similar lines, by varying rates of progress from the basic financial up to overall strategic management framework. Also the strategic decisions force management to access the consequences of present decisions and do the changes as needed and to lead company to achieve it targets. The second major role is the tactical decisions. This involves the establishment of key initiatives of the overall strategy. Further to Gerber some examples we can take as, if organization decided to be the number one provider among the business competitors, then the organization must develop tactics such as implement a marketing system to achieve that outcome. This tactical decision is the domain of any business mission. Further to Gerber (1995), the next level is the operational decisions which determine how activities actually get done. This decision is mainly about who is going to do what and when. This will include the following terms: How will Organization spend their money this month? How will the company service that client? What is companies procedure for delivering an order? Who will be doing quality control? If an organization is making decisions involving process and procedures, then these can identified as an operational decisions. Specially operational decisions are made in real time and make quick adjustment to achieve the desired outcome. Also according to Abdi and Sharma (2007), stated that strategic and tactical management roles are playing huge role within the flight operation handling while using information systems. When we consider such an operation, there cant be any small mistake. Even a one wrong decision will lead to a huge problem in airline industry. Therefore it is very clear that the management decisions are very important when organization deals with IS/IT. As stated by Boseman, Phatak and Schellenberger (cited in Vardrajan Clark 2002), management roles are process with concerned with determining the future direction of an organization and implementing decisions based on the aim to achieve organization long and short term objectives. Within every firm the nature of control changes with the level of management. Top level management is mainly concerned about the issues which relate to strategic control. The lower level management is look after the operational issues. 7.0 Methodology The following sections present research methods that are using for this research project. 7.1 Selection of an appropriate research method(s) Following sections present a brief description of few research methods. Also this section explains the reasons to select those methods for this research project. 7.1.1 Description of Research Methods Case Study Research: According to researcher Yin (1984, p. 23), the Case study research method is defined as an empirical inquiry that investigates a contemporary phenomenon within its real-life context; when the boundaries between phenomenon and context are not clearly evident; and in which multiple sources of evidence are used. Also the case study includes observations, questionnaires. Also each organization has unique feature and mainly the Case studies are used to identify such features and to show how they affect the implementation of systems and how it influences the organizations. Action research: According Emroy (1980), mentioned that, like Action research methodology is mainly need to be flexible and adaptable due to disruption in the plan and may not meet the needs of everyone involved. Also it is not well known or accepted in computing and information systems. Survey Research: This method is used by the researchers when they want to gather data from some occurrence which is not possible to perform a direct observation. Experimental Research: When we consider the Experimental Method, it is mostly depend on the experiments on a new technique or approach and have to compare the results against those obtained using the generally accepted technique or approach. Therefor it seems this research method takes more time and the results will vary with each organization (Emroy 1980). 7.1.2 Proposed Research Method(s) for this study Matching the above mentioned attributes of the research methods with this research project, case study is the best research method that can be used. Primary and secondary data has to be used for this research project. Secondary data will be used get the theoretical aspects of role of management and