Machinery Of The Fume Scrubber Engineering Essay

The geographic expedition in this undertaking evolves about the designing of the components in the machinery of the FUME SCRUBBER in the present twenty-four hours universe. Furthermore, the principal characteristics besides include significance of fume scrubber and its applications in the modern epoch. At the same minute is besides reveals about the facts of distinct parts of the machine and the operation of the machine. Following, it besides explores the design computations in order for the successful completion of the undertaking. It besides does include information about the basic survey of the Fume Scrubber that how it is created. The research besides reveals about the distinguishable types of smoke scrubbers available in today ‘s period. Consequently, it besides comprises of the CAD Model of the needed Fume Scrubber via utilizing PRO-E. In add-on, the theoretical account was re-done in order to obtain the Computation Fluid Dynamic Analysis for the flow of fluids inside the Fume Scrubber. As a consequence, of the applications, as elaborated in the undermentioned study the FINITE ELEMENT ANALYSIS has besides been justified. Therefore, the undertaking FUME SCRUBBER is illustrated in this study with the easiness of CAD Model. Introduction In the modern universe today, promotion in engineering via industries is at its highs. This sweetening of universe has its ain advantages and disadvantages. The advantages consider the amenitiess of the world and the possible disadvantage is menace to conventional environment conditions. Therefore, the endurance of world is influenced by the environment and hence, protection of the environment is of extreme importance in today ‘s epoch. As a effect, FUME SCRUBBER has been introduced to protect the nature from the harmful milieus created due to human activities ( e.g. mineral extraction, metal processing etc ) Mounting pollution of the environment from industries has anticipated to the speedy augment in environmental wellness and authorities ordinances, the milieus are really parlous for the species on Earth to digest, hence to heighten the environmental conditions the subsequent smoke scrubber were utilised. Scrubbers are intended to proficiently extravagancy and extinguish toxic exhausts from the concern bring forthing toxic gases which bring about decrease in ozone bed and green-house consequence. Scrubbers are miniature in volume and can be positioned where appropriate. Making usage of a typical tubing surrounded by a tubing propose, it has been built from plastic acid and base immune stuff that permits it denominate expeditiously indulged and extinguish up to 95 % of fumes gases. The specifications of the fume scrubber discussed in this study comprise of: – Large figure of holes for spraying the liquid 289cm tallness of the scrubber 143litres/min scouring liquid flow 5.08cm tubing OD Scrubbers are significantly utilized in industrial furnaces, hotel, chemicals procedure works, fabric Millss, boilers, metalworks and cement workss. In add-on, they are operated in air pollution monitoring equipments, allied industries and vacuity wadding. Scrubbers have apparent advantages which consist of: – Low force per unit area depletion and least energy necessity Easy flexibleness and high turn down Maintenance free and noiseless operation No adult male power required Therefore, the undermentioned study would find the operations of the fume scrubber, ways of bettering its design in an effectual method and depicts the efficient disposal of the undertaking. The study will show the design process followed in planing the FUME SCRUBBER and it will demo the consequences of CFD analysis and FEA analysis every bit good as discoursing ways of bettering the public presentation. Besides, its constituents aid in adept apprehension of the operation and applications of the fume scrubber. Therefore, the undermentioned study makes possible in emerging out the successful completion of the marks.Aims/objectivesThe main purpose of the undertaking ( FUME SRUBBER ) is to plan the constituents that exist in the machinery of Fume Scrubber. In add-on, analyzing the importance of Fume Scrubber and its applications in the existent universe are besides the chief characteristics of the undertaking. The undertaking design can be achieved via design computations which can fart her be accomplished after the research about the machinery is carried out. Therefore, the research work involves the survey of distinct parts of the machine and the operation of the machinery. Consequently, the design computation leads to the preparation of the needed CAD theoretical account of the machine. Furthermore, enhanced analysis is carried out via executing the Finite Element Analysis of the system as the effects of lading are studied on the components of the setup. As a concluding point, the Computational Fluid Dynamics is besides involved to analyze the consequence of air flow in the Fume Scrubber. Last, the applications of the fume scrubber are to be elaborate via explicating the advantages of FUME SCRUBBERS in the industry.Design and Application of Fume ScrubberThere are assorted types of designs available in the industry for different applications. The primary aim of the fume scrubber is to undertake the caustic exhausts, moist gases and air flows with dust nowadays in an industrial environment. There are three chief types of designs that have been developed in order to undertake the issue of remotion of contaminated air by purification procedure utilizing the appropriate fume scrubber. These are as listed below: Impingement Plate Scrubbers Packed bed Scrubbers Venturi Scrubbers Impingement Plate scrubbers are the scrubbers in which gas is passed vertically through all right perforations in a home base and is collided on marks and contacted with H2O or any other liquid fluxing horizontally across the home base. Pressure bead is one of the premier factors that determine the pick of scrubber. The figure and types of phases in home base scrubbers are specially designed to the conditions ; nevertheless these can be modified depending on alteration in the conditions or demands. Packed bed scrubbers are designed in such a manner that flow of gas rises, counter current to the flow of the scouring liquid through a jammed tower type construction, in which the taint or purification procedure takes topographic point. These types of scrubbers are besides designed in a horizontal alliance. The horizontal designed is used where multiple phase scouring is required or besides used in countries with less ceiling tallness. Venturi Scrubbers consists of an external venture subdivision which is designed to increase the speed of the incoming air before the air is combined with the scouring liquid and centrifuge where the remotion of contaminations take topographic point and hence sublimating the air. This type of scrubber is applied in procedures where condensation of liquid is present or metallic bluess are present or in the presence of chemical reaction which subsequently consequences in production of toxic exhausts for illustration ammonium chloride. Particle aggregation chiefly takes topographic point due to impaction as the fumes gas which is exhausted from the procedure and base on ballss through spray. The turbulency happening due to this causes the atoms to come in contact with the wet droplets and hence get collected. The efficiency of aggregation of atom additions with the nozzle force per unit area increasing which gives rise to an addition in liquid to gas ratio. This will besides ensue in an addition in force per unit area bead, which once more causes a rise to coerce bead. This type of scouring system has some restrictions every bit good such as care job. Venturi scrubbers are subjected scratch job in the high-speed countries such as the recess and mercantile establishment.3.1 Advantages and Disadvantages of ScrubberIn order to compare the scrubber in footings of working phenomena, the device is usually compared and evaluated with fabric filters and Electrostatic precipitators. The advantages of the scrubber over this device are as listed in the tabular array on the following page:AdvantageDisadvantagesCan work at high temperatures, high humidness Gas StreamsProne to corrosionMinimal exposure to fire and explosive jeopardiesRequires High PowerCan roll up both gases and particulate affairWater disposal jobsNo Secondary dust beginningDifficult merchandise recovery.Requires minimal infinite compared to other control devicesVertical clip demands height clearanceTable Advantages and Disadvantages of Fume Scrubber3.2 Construction MaterialsAs corrosion is one of the major job that could impact the systems behavior, the building of the scrubber is done chiefly in many different stuffs runing from Fibre reinforced plastic, PVC, CPVC, Polypropylene, Polyethylene, Mild steel, Stainless Steel, FRP-lined mild steel, nickel metals and aluminum. The building stuff choice procedure is based on the demands and design footing provided by the client.3.3 Suitable ApplicationsScrubbers can put to death the riddance of acidic, alkalic, soluble organic gasses, bluess, and odours get downing a gas watercourse. The jammed bed engineering scouring comprises the widest array of vapor and gas scouring maps. When fabrication of smoke scrubbers, it permit to choose the finest stuffs of production, in add-on to choose the finest wadding for the intent. Fume scrubber designed for the subsequent intents: Metal Pickling Lines Chemical Cleaning/Milling Lines Acid Etching Lines Acid /Chemical Bulk Storage Solvent Bulk Storage Metal Finishing Lines Metal Plating Lines Chemical Mixing Operations Chemical Processing Equipment Food Processing Pharmaceutical Blending Pharmaceutical Production3.4 EfficiencyScrubbers include a acute measure of vigorous surface country with arbitrary dumped packing. The packing stuff elected is sourced on the maps ; attesting that it rupture the liquid watercourse into legion, smooth surface movies that generate in-depth gas/liquid familiarity at a low force per unit area diminution. In the class of procedure, gas watercourses rises by agencies of a jammed bed although scouring liquid class down ( by gravitation ) over the packing stuff. The counter-flow lineations standard beliefs most favorable mass transportation.3.5 Benefits of Fume Scrubbers:Very Small Footprint Ease of Installation Variable Packing Height Local or Remote Blower Local or remote control panel Multiple Phases Height & A ; Width FlexibilitySignificance of fume scrubberIt is an air pollution control device that utilizes an inordinate energy liquid spray in order to eliminate aerosol and gaseous pollutants get downing an air watercourse. However, the gases are removed in two ways which are: – By soaking up Chemical reaction Gass are discharge from the burning procedure is conceded by agencies of armored combat vehicle enveloping a lime substance acknowledged as limestone slurry which can restrict and antagonize the S dioxide. Engineers concept and saddle horse high competency, depleted continuance smoke exhaust systems proposed to extinguish H2O soluble contaminations through gas soaking up and mechanical encroachment. These units can be standard-sized or usage built with the purpose of correspond to infinite and height boundaries or outline disposition. Appropriate smokes control setup in add-on necessitates the appropriate mechanism and system incorporation to be the chiefly efficient. In add-on to it, declaration to fume and wash up jobs by agencies of: Entire system design and integrating Automated pH control Performance information for air licenses Professional installing by experient applied scientists Extensive experience in system design Choice of proper stuffs of building Utilize high public presentation Lamtec wadding Flexibility in taking constituents for best public presentation Fume Scrubbers propose: Translating elements in gas watercourse into more effectual substances Geting rid of atoms from gas watercourses A choice of sizes, with the criterion sizes being: 24 † , 30 † , 36 † , 48 † and 60 † diameter scrubbers. Fabrication of both perpendicular and horizontal scrubbers harmonizing to your demands. Materials of creative activity utilised fluctuate depending on the chemical and procedure environments necessitated Fume scrubbers assembled are individually fabricated to extinguish mist, entrained liquid atoms, noxious caustic gases and bluess from the exhaust air watercourse. A jammed bed utilizing Lintec wadding is the bosom of the scrubber. Pollutant gases can normally be eliminated to any needed soaking up to convene confined air pollution ordinances. The pollutants are eliminated by agencies of the followers: Gas Absorption – toxic or otherwise unwanted gasses are captivated into the liquid section. Impingement – Particulate affair is eliminated by agencies of encroachment in the map of it is foremost forced by agencies of a moist packed bed and so by agencies of a stripe blade or mesh tablet filters subdivision.Equations used in fume scouring:The gases normally scrubbed include HCl produced from metal pickling. This is removed by a neutralization reaction with sodium hydrated oxide. The reaction is shown below: Another common smoke gas is azotic oxide every bit good as other N oxides. These will usually respond with the O in the air and the H2O vapor to organize azotic acid. Since it is acidic, azotic acid can be scrubbed by utilizing base. Nitrogen oxides tend to be produced from burning reactions. The reaction for this is: The merchandises of the scouring are so dissolved in the H2O and taken off from the air. Another common pollutant is sulphur dioxide. This is a gas that is produced by assorted industrial procedures such as doing semiconducting materials, batteries, and burning of sulfur incorporating fossil fuels. This gas, like N oxides, dissolves in H2O to organize sulfuric acid which is scrubbed with the usage of base. The undermentioned chemical reactions are known to take topographic point. A closely related pollutant is hydrogen sulphide gas. This is treated in a similar manner to sulfur dioxide. The chemical reactions speaking topographic point in the fume scrubber are: The salt merchandise of the reaction is taken off with the H2O therefore liberating the air from the H sulfide gas. One common gas is carbon dioxide gas. This is produced chiefly by burning and when heating carbonates. It is responsible for planetary heating and can be removed by change overing it into a carbonate that can be dissolved off from the air by the H2O. The chemical used is sodium hydrated oxide and the merchandise of the reaction is baking sodium carbonate, Na carbonate. The reaction is: Unburned hydrocarbons are besides an issue. These are dealt with by oxidizing them utilizing hydrogen peroxide or carboxylic acids. The merchandises are carbon dioxide and H2O. These can be farther scrubbed to bring forth carbonates to acquire rid of the C dioxide. The equations are: AndType of scrubberWet scrubberA development of pollution manipulates engineering. The chief principal of operation of the moisture fume scrubber is the usage of liquids in wetting the air fluxing indoors. The contaminations will fade out into the liquid thereby traveling from the gas stage to the liquid stage. The air that leaves the scrubber is well cleaner than that air which entered it. The wet fume scrubber is able to command the flow of many pollutants including acids and the acidic gases e.g. HCl, SO2 etc that are produced from the assorted industrial procedures when handling metals. Wet scrubber is operated to scour assorted pollutants for case air and dust atoms. The operation of wet scouring involves contact of particulate affair along with the scouring solution for case H2O, complex solutions of reagents that peculiarly aim for house compounds. In add-on to this, the efficiency of the fume scrubber must be high to take all or bulk of the pollutants. In order for this to be achieved, the following techniques could be implemented: Increasing abode clip in the scrubber Increasing the surface country of the scrubber ‘s solution utilizing spray nose, packed towers. Bettering the soaking up of contaminations by taking an appropriate liquid There are two chief types of moisture smoke scrubbers. The first 1 is the venture nozzle type and the 2nd 1 is the jammed bed fume scrubber. An illustration of a wet fume scrubber is shown in figure 1 below. Mention: – Wang, Lawrence K, Pereira, Norman L & A ; Hung, Yung TSE. ( 2004 ) Air Pollution Control Engineering ( Volume1 ) : Wet Scrubber. USA: Human Press IncFigure 1, an illustration of a wet fume scrubber [ 1 ]The venture type moisture fume scrubber uses a individual nose to spray the liquid at really high force per unit area into the reaction chamber. The high force per unit area flow is aimed at the bottleneck of the chamber which is the venture subdivision. An of import and desirable effect of this manner of operation is that the venture wet fume scrubber does non necessitate the usage of a fan or a blower to travel and go around the air in the system as the force per unit area distribution creates the forces necessary for this to go on. Because of this, the venture type moisture fume scrubber is besides called ouster venture scrubber. Another of import facet of the operation is that this type of wet fume scrubber can non straight take contaminations and exhausts with a tom sizes less than a micrometer. Since the ouster venture wet fume scrubber relies on the force per unit area and turbulency to blend the air and the liquid together, so an addition in force per unit area which leads to an addition in turbulency will maximize the commixture of the two flows ( the contaminated air and the liquid ) therefore taking to an addition in efficiency. The 2nd type of wet fume scrubber is known as the jammed bed moisture fume scrubber. Here a blower is used to coerce the air with contaminations to travel to the commixture chamber where the pollutants are removed. This type of wet smoke scrubbers requires less energy to run. However, it can non take atoms less than 5 microns in size. [ 2 ] [ 3 ]Dry scrubberDry scrubbers comprises of a chemical interpolation zone followed by manner of a reaction zone where the pollutant in the gas kernel treated counters with the base. Dry scouring involves two criterion procedures which are at present utilised in industries. First, a dry soaking up which introduces powered alkali soaking up agent addicted to foul gas watercourse. Second, semidry ; this instills resolute slurry into the contaminated gas watercourse and eliminates the liquid by agencies of vaporization, separating the vigorous, dry base soaking up agent. Both the procedures mentioned above eradicate base agent with an electrostatic pr ecipitator. [ 4 ] Mention: – Wang, Lawrence K, Pereira, Norman L & A ; Hung, Yung TSE. ( 2004 ) Air Pollution Control Engineering ( Volume1 ) : Dry Scrubber. USA: Human Press IncStructures of smoke scrubbersVertical smoke scrubberThe perpendicular assembly is a counter-flow type with contaminated gas traveling upwards and reticulating liquid spraying downward into the mixing country. Gaseous contaminations are absorbed by the liquid due to solubility degrees or by chemical reaction. Counter-flow scrubbers can hold higher remotion efficiency than a Horizontal Packed Bed Scrubber. The perpendicular counter-flow design typically provides the best scrubbing efficiency of bluess and is the most common design found in most industries. Figure 2 below shows an illustration.Figure 2 a perpendicular packed bed fume scrubberHorizontal smoke scrubberThis is a cross-flow design where the scouring liquid flows vertically downwards while the gas passes horizontally through the wadding commixture subdivision. A Horizontal Packed Bed Scrubber is used when limited headway is an issue at a installation or when low profile is desired for roof-top applications. Multiple phases can be easy provided in one lodging with separate sumps and pumps if required. The cross-flow design is less susceptible to bed fouling for airstreams that may incorporate solid particulate.Figure 3 A horizontal packed bed fume scrubberComponent of fume scrubberRECIRCULATING Tank CONVERGENT TOP CONE Scrub Tank MIST ELIMINATOR RECIRCULATING Pump Motor WITH BLOWER NOZZLE PIPE HOOD / DUCTFunction of constituentRECIRCULATING Tank: –Bacillus AFigure Water armored combat vehicle in a fume scrubberIt comprises of combination of legion chemical intents for scouring process and H2O provender in the function of put in for the unneeded elements to repair downwards which has been set away through mercantile establishment port. It is utilised to allow efficient use of the trustee. In this undertaking H2O is utilized in such a manner that it will blend with the dust atoms coming from the recess and will settle at the underside of the armored combat vehicle. The armored combat vehicle has a drainage mercantile establishment which will be used when the armored combat vehicle requires emptying and cleaning procedure. This is denoted by missive A in the above figure Letter B denotes at the mercantile establishment of the H2O armored combat vehicle, which is connected to the recirculating pump. This so drives the H2O upward which will be sprinkled in the scouring armored combat vehicle as explained subsequently.Convergent Top cone: –Figure Convergent Top ConeThe above figure is of a convergent cone which is comprises of the top subdivision of the fume scrubber tower. The portion is designed in such a manner that it provides a meeting way to the fluid to flux out of the fume scrubber. The convergent form allows the fluid flow to be extracted at a higher speed ensuing in a lessening in a force per unit area. This is supported by Bernoulli ‘s equation. On the top face of the convergent cone an extractor goon is placed which will make a force per unit area differential resulting in the suction of the pure air.Scrubing armored combat vehicle: –Calciferol C Bacillus AFigure Scrubbing TankThe inner of the armored combat vehicle is enveloped in the thick of acerb cogent evidence for case acid brick and it is a location where scouring development takes topographic point. Scrubing armored combat vehicle interruptions free toxic stuff and gases from air, which so gets assorted with the H2O and is deposited in the H2O armored combat vehicle as mentioned earlier. The armored combat vehicle has three recesss and one mercantile establishment. Letters a‚? , B and C are recesss and Letter is Outlet. Inlet A is the chief recess to the scouring armored combat vehicle this is from where the air enters the scouring armored combat vehicle. The air come ining the scouring armored combat vehicle is a assorted air i.e. with drosss. The elaborate dimensions of all the parts can be found in the undertaking logbook. Inlet B is the recess from which the H2O is sprinkled in to the scouring armored combat vehicle. This sprinkled H2O is will so unite with the drosss or dust and will therefore settle in the H2O armored combat vehicle at the underside of the construction. The sprinkled H2O enters the scouring armored combat vehicle by agencies of the recirculating pump connected externally. Inlet C and Outlet D are the countries where a wadding medium is placed. The ground behind the fond regard of the wadding media is to supply a maximal surface contact between the gas and the scouring liquid by easing uninterrupted formation of droplets throughout the jammed bed. This will ensue in addition in efficiency of a scrubber. The efficiency is besides depended on the tallness of the packing stuff. This maintains a unvarying volume and flow. Besides provides a high liquid to gas ratio.Moisture Eliminator: –Figure Mist EliminatorMist Eliminator is a device that is placed in order to maintain the liquid in the vas. The ground behind add-on of this characteristic is that without this characteristic the droplets become airborne and are carried out of the vas by traveling fluid which causes job as liquid gets collected in the part where it is non meant to be present. This device is besides referred to as Moisture Eliminator or Moisture centrifuges. The image below describes a general procedure of how a wet eliminator works.Figure Working process of a Mist Eliminator [ 5 ]As it can be seen from figure 5 Mist eliminator captures the liquid drains. Mist is carried by vapor. The overhead vapor shown in the figure is free of all the drosss that are being suctioned by the goon.RECIRCULATING Pump: –Figure Recirculation PumpThe chief map of the recirculation pump is to supply H2O to the scouring armored combat vehicle. The pump is driven by the motor which is fixed to the land. The motor provides a impulsive force for the H2O to be pushed into the scouring armored combat vehicle. The H2O from the H2O armored combat vehicle is suctioned by this pump. One of the positive facets of the motor design is that it will non be affected even in the instance of a presence of chemical in the H2O.Blower is a constituent that will force the air to the ambiance. The blower consists of usher vanes that direct the air flow out of the system.Motor with BlowerFigure Moto r with BlowerNozzle Pipe: –Figure Pipe with NozzleThe above diagram is of a pipe holding little pores in it. These pores allow the scattering of H2O which is coming from the recirculating pump. The working of this constituent is in the same mode as that of the sprinkler. The efficiency of this portion will hold an consequence on the efficiency of the fume scrubber. This is because the sum of H2O sprinkled from this pipe will ensue in the sum of dust being collected.Hood: –ABacillusFigure HoodThe goon is a pipe linking the fume scrubber with the blower. Inlet A is connected to the top of the convergent top cone subdivision of the fume scrubber. Mercantile establishment B is connected to the blower which will so steer the air flow out of the system as explained earlier. The decompression sicknesss in the goon will do a difference in the force per unit area and this force per unit area should be overcome by the blower in order for the system to run successfully.615852347O peration of fume scrubber12111491610131Figure Fume Scrubber Set upFigure 10 shows a complete installing set up of the fume scrubber with each of the constituents separately labelled by different Numberss. The maps of each constituent are as explained earlier, but the following description will sketch the working of the fume scrubber in an industrial environment. First, the installing is done either in a perpendicular or horizontal orientation depending on the design specification. The design selected in this scenario is of perpendicular orientation. In this peculiar type of fume scrubber assorted air enters the recess at point 1 from the room, chamber, etc. at a specified value of the volume flow rate. Item 15 are the recesss and mercantile establishments of the packing media. The map of the wadding media is to cut down the speed of the air which is coming from the recess ( item 1 ) . This will blockade the assorted air. The air is so in the assorted province inside the point 2 ( sc ouring armored combat vehicle ) . At this point, the recirculation pump ( item 13 ) is started which will so pull the H2O from the mercantile establishment in H2O armored combat vehicle ( item 10 ) into the recirculation pump and is so discharged into the pipe ( item 6 ) and from this point onward the H2O so enters the scouring armored combat vehicle by agencies of sprinkler ( item 5 ) . The H2O is so assorted with the impure air. The dust atoms in the air so combines with the H2O doing it heavier and therefore deposited at the underside of the H2O armored combat vehicle. Item 3 is the wet eliminator which collects the H2O droplets and eliminates it from the vapor. This will forestall the H2O or wet from traveling into the goon via the top conelike subdivision ( item 4 ) of the scrubber. The pure air is drawn into the goon ( item 7 ) . This suction procedure is done with the assistance of the blower ( item 14 ) . The outlet terminal of the goon is connected to a subdivision of canal which consists of usher vanes ( point 9 ) , set up in such a manner that air is directed in the upward way towards the perpendicular canal ( item 8 ) which so discharges the pure air to the ambiance. The H2O from the H2O armored combat vehicle can be extracted manually detecting the H2O quality through a crystalline screen. After the armored combat vehicle is to the full emptied the H2O can be refilled into the armored combat vehicle by an extra recess which is located at the back terminal of the H2O armored combat vehicle every bit shown as figure 16 in the figure 10. The chief characteristic of the full procedure is the proper recirculation of H2O in the system, which mixes with the impure air to cut down the pollution degrees of the incoming gaseous mixture, therefore supplying a more purified and uncontaminated air to the ambiance leting a control in the air pollution and therefore lending to the decrease in the production of green house gases ensuing in the planetary heating.Cad theoretical account of fume scrubberFigure Isometric ViewThe CAD theoretical account was made of a jammed bed fume scrubber utilizing pro applied scientist. The fume scrubber was designed by piecing together different parts. The parts of the fume scrubber were modelled separately and so assembled together. The diagram above shows a fume scrubber with all parts assembled together. The bluish chamber has been made transparent to enable the reader to see the internal parts of the fume scrubber. The parts were explained separately in a old subdivision. The assembly was made by stipulating the restraints for each portion. For illustration, the bluish chamber is to be steadfastly attached to the ruddy base. Therefore, the restraints were specified that at the junction between the bluish chamber and the ruddy base, an Ten way and Y way restraint was applied. Another illustration is the long ruddy connection tubing that joins the bluish chamber at the top. In that instance, the restraints are that the axes go throughing through the Centres of each must be coinciding i.e. the cross subdivisions of the two tubings must be homocentric. The same can be applied to all the other parts in the assembly. After the basic construction of the fume scrubber has been made by piecing the single parts, the moving parts and the mechanisms had to be specified. The chief moving machine is the blower which made of the fan and the motor. First, the mechanism was specified. The mechanism used was a rotating articulation applied to the shaft of the fan and the blower. Then, the way of rotary motion of the mechanism was specified. Finally, the interaction with other parts of the assembly was specified. This is fundamentally to guarantee that no struggle occurs when the joint rotates e.g. such as the fan clashing with the base or with the ruddy goon. This was a really basic description of the methodological analysis employed in piecing the fume scrubber and making the gesture simulation. The figure 12 on the following page shows the front position of the fume scrubber for better apprehension of the system and besides the construction.Figure Fume ScrubberCFD of fume scrubberThe CFD ( Comp utational Fluid Dynamics ) analysis theoretical accounts the flow of the air through the fume scrubber. This gives a basic thought of the flight of the airstream and helps the interior decorators to modify the construction consequently. The CFD simulates how the watercourse behaves from entry to go out, and bespeaking the countries where the flow looses energy. The airstream used here is simulated at a volume flow rate of 10m3/s fluxing in from the chief recess country. Plots below are of the speed contour secret plans and of Velocity and Velocity in the y-direction.Figure: speed contour secret planFigure: Y – speed counter secret planThe graph shows the speed of the airstream at different countries of the flow inside the chief vas. As can be observed, the speed is the highest at the top of the fume scrubber, bespeaking that the air moves at a high velocity at the top. Areas at a low speed have dveloped whirls, which result due to air at opposite speeds fluxing adjacently, doing the speeds to call off out. Looking at the Y – speed secret plan, it can be seen that some portion of the recess air flow moves upwards straight, while another volume of air moves downwardly. This portion so bounces back in to the upwards traveling air and merges with the flow.Figure: Flow Trajectory of airstreamThe above secret plan gives a clear simulation of the flow forms of the air flow inside the construction signifier recess to outlet. As can be seen, th is trajectory representation mirrors the speed contour secret plans. Air moves from the recess in both the upwards and the downwards way. Upwards speed reaches its upper limit at the top of the mercantile establishment cone, while the other portion of the air flows back from the bottom towards the top. In the diagram, it can be seen that the air from the underside of the fume scrubber merges with the upwards fluxing air, which accelerates it further and tends to travel it towards the top mercantile establishment. The air flow simulated here is wholly disruptive. This means that the streamlines are non laminal and be given to travel in different waies once they exit the controlled infinite of the recess pipe. This pattern is true in the sense that a true complete laminar flow does non be in the existent universe, and to pattern the flight of the air as a turbulent fluid flow will give more accurate readings, which will be helpful in usage for farther computations which can be taken o ut for different parametric quantities.FEA of fume scrubberWhen planing a portion or constituent, it is necessary to analyze the elements and understand the forces impacting the operation of the system, and to set the construction consequently to obtain a successful theoretical account of the concluding merchandise. Transporting out the FEA ( Finite Element Analysis ) of a construction reveals the emphasis degrees, strain undertaken, and the supplanting of the construction under the applied force. There are assorted forces moving on the fume scrubber, nevertheless, the chief forces which apply a important consequence of the construction are the weight of the construction itself, the weight of the H2O in the H2O armored combat vehicle, and the force exerted by the inflowing airstream. However, sing the stuff selected for the fume scrubber, which is unstained steel 304, the initial premise is that the construction will hold a high value of the factor of safety, which is an optimal factor used to depict the dependability and sustainability of the fume scrubber.13.1 CalculationsSee Appendix for measure by measure computation carried out to cipher the weight of the construction. Besides the computation for the Head losingss in the recirculation pump can be found in the Appendix.13.2 AnalysisThe FEA analysis of the fume scrubber is evaluated by sing it being fixed at the base of the theoretical account. This ensures that the fume scrubber does non skid from its base. However some scrubbers might be intended to hold a sliding base, they have different specifications to go to to.Figure: fixture of the base of the H2O armored combat vehicleThe forces being applied on the construction are the weight and the force per unit area due to the H2O and air. However, the air is fluxing at a comparatively low velocity and due to its low denseness, it does non impact a force sufficient plenty to associate to the weight and H2O force per unit area, therefore it is omitted from the computations for the simplification of the modeling. Transporting out engagement of the chief construction, it provides with the values of the emphasis distribution, supplanting and the factor of safety of the construction. These belongingss are really utile when depicting the sum of force that the stuff can defy. It besides suffices as to how much excess burden above the design emphasis can be undertaken by the construction if needed.Figure: emphasis distributionThe figure shows the emphasis distribution across the construction due to the weight of the construction and the force per unit area on the H2O armored combat vehicle due to the H2O contained in it. As can be seen, the maximal emphasis occurs at the Centre of the H2O armored combat vehicle, which is about 39.2 MPa. This occurs because the centreline of the H2O armored combat vehicle experiences weight of the construction from the top and the reaction of the base from the underside, which tends to make a high emphasis at the center of the armored combat vehicle.Figure: supplant ing secret planThe supplanting secret plan mirrors the emphasis secret plan in footings of the critical countries where the supplanting is at a upper limit. Although the supplanting is higher on the armored combat vehicle than at the other countries, the value is comparatively low, approximately 0.09034mm and does non impact the armored combat vehicle in any physical position.Figure: factor of safety secret planAs represented by the factor of safety secret plan, the minimal factor of safety is about 5.27, which occurs at the H2O armored combat vehicle. This means that the construction can at least prolong about more than 5 times the emphasis that it was designed to achieve. This reflects the dependability and sustainability of the construction, which is really important to any company willing to put in it. This besides represents a step of the life-time of the fume scrubber, detailing how long the system will work expeditiously until it is sent to be scrapped.DiscussionThe usage of fume scrubbers in industry is increasing and is being incorporated in different procedures such as metal intervention, metal pickling, and machining. The efficiency of fume scrubbers available today can near 99.9 % . The procedure of smoke scouring is of import for the protection of the environment and for wash uping the gases and contaminated air produced or used by the assorted industrial procedures described above. The design of fume scrubbers is a long and iterative procedure. The demands for fume scrubbers are that they must be able to scour exhausts with atoms that can be less than five micrometers in size. The operation of the fume scrubber will differ harmonizing to the rule employed. These different rules of operation have been discussed in this study in item. Furthermore, a moisture packed bed perpendicular smoke scrubber has been described in inside informations in this study with the design procedure outlined and the analysis of the scrubber. The analysis included transp orting out a CFD analysis to see the public presentation of the scrubber in footings of decelerating down the air and supplying the force per unit area needed for the disruptive commixture of the smoke atoms and gases with the cleansing liquid ( which efficaciously works by fade outing the gases and atoms in the exhausts ) . In this peculiar design although is non shown here, many jobs were encountered in the design of this scrubber to enable the efficient commixture to take topographic point. So, the system was modified several times to make the coveted public presentation. In the CFD analysis, as discussed in the CFD subdivision it is noted that the velocity at the recess to the scrubber of the spray ( the cleansing liquid spray ) was reduced as the country of the cross-section of the fume scrubber increased. This created some jobs in the initial design as it led to †uncontrolled † flow of the liquid spray significance that it is disruptive but, it does non follow the way intended for it to travel through. This job was solved by the aid of CFD analysis together with the fluid kineticss knowledge base. The force per unit area inside the fume scrubber is non high ( at least in this instance as the type used was packed bed type ) . If the design made were a venturi type smoke scrubber, so the force per unit area used will hold to be considered since it can be rather high. However, in the instance of the design presented here the force per unit area was non high and so it was ignored when a emphasis analysis was carried out. There are grounds for this. First, the force per unit area is really little and handling the fume scrubber as a force per unit area vas, it is seen by transporting out a simple computation that the emphasis in the walls, which will be maximal as a hoop emphasis, will non be high to be of importance. However, the perpendicular smoke scrubber besides acts a column or a prance and is subjected to a burden due to its ain weight that acts as a compaction burden ( ideally ) which can do buckling of the scrubber. Buckling is an utmost instance as the wall thickness has to be really little and the tallness of the fume scrubber really big or the stuff from which it is made is holding a low snap modulus. The FEA showed that no buckling was at that place and so the compaction strength of the scrubber was equal. There is a safety factor for the scrubber and this besides takes into history the little force per unit area rise inside the scrubber. Again, the emphasiss in the walls due to the internal force per unit area have been ignored because these are little plenty to be neglected but for a venture type, these would hold been basically included in the emphasis analysis of the scrubber.DecisionThe decision from the above is that the usage of fume scrubber is a really cost effectual method of cleaning procedure air from the exhausts and suspended atoms in the air. The concern director or the mill which wishes to use fum e scrubbers in its operations will be benefit from improved pureness of the fumes gases and better working environment in welding and metal machining premises. The clean air is an indispensable legal demand today and the usage of fume scrubbers helps make the set aims. Furthermore, the fume scrubber reduces environmental pollution that arises due to the particulates every bit good as the acidic and caustic gases produced in the exhausts. The chief issues to see are the type of fume scrubber to use, the constellation, and the cost of the scrubber. The type will be dictated by the energy supply available to run the scrubber as the venture type scrubbers need to bring forth a high force per unit area spray which requires a big energy input. The jammed bed type has lower energy demands. The constellation to utilize i.e. horizontal or perpendicular will be dictated by the infinite available in the premises where the fume scrubber will be installed. The concluding factor is the cost of th e scrubber which can be justified by transporting a cost analysis to compare the different types of the scrubbers to utilize.Mentions: –Kingston University, ( Internet ) Available at & lt ; & lt ; hypertext transfer protocol: //www.monroeenvironmental.com/air-scrubber-venturi.htm accessed 18/04/2010 & gt ; & gt ; Kingston University, ( Internet ) Available at hypertext transfer protocol: //en.wikipedia.org/wiki/Ejector_venturi_scrubber accessed on 18/04/2010 Kingston University, ( Internet ) available at hypertext transfer protocol: //en.wikipedia.org/wiki/Packed_bed accessed on 18/04/2010 Wang, Lawrence K, Pereira, Norman L & A ; Hung, Yung TSE. ( 2004 ) Air Pollution Control Engineering ( Volume1 ) : Dry Scrubber. USA: Human Press Inc Kingston University, ( Internet ) Available at hypertext transfer protocol: //www.amistco.com/PRODUCTS/ELIMINATORS/index.html accessed on 19/04/2010. Kingston University, ( cyberspace ) Available at & lt ; & lt ; hypertext transfer protocol: //www.engineeringtoolbox.com/reynold-number-water-flow-pipes-d_574.html accessed on 21/04/2010 & gt ; & gt ; Kingston University, ( cyberspace ) available at & lt ; & lt ; hypertext transfer protocol: //www.pipeflow.co.uk/public/articles/Darcy_Weisbach_Formula.pdf accessed on 22/04/2010 & gt ; & gt ; Kingston University, ( Internet ) available at hypertext transfer protocol: //opencourseware.kfupm.edu.sa/colleges/ces/che/che309/files % 5C2-Experiments_Losses_in_Pipe_systems.pdf accessed on 22/04/2010. Kingston University, ( Internet ) available at hypertext transfer protocol: //www.thermexcel.com/english/ressourc/pdclocal.htm Kingston University, hypertext transfer protocol: //mysite.du.edu/~jcalvert/tech/fluids/orifice.htm hypertext transfer protocol: //www.surechem.com.my/download/eijkelkamp/P2/P2-25e.pdf www.pipeflow.co.uk/public/articles/Darcy_Weisbach_formula.pdf Mention: -Kingston University ( Internet ) , available at: hypertext transfer protocol: //process-equipment.globalspec.com/learnMore/Manufaturing_Process_Equipment/Air_Quality/ScrubbersBibliography

Solutions of Financial Management

Chapter 1 An Overview of Financial Management Learning Objectives After reading this chapter, students should be able to: ? Identify the three main forms of business organization and describe the advantages and disadvantages of each one. ? Identify the primary goal of the management of a publicly held corporation, and understand the relationship between stock prices and shareholder value. ? Differentiate between what is meant by a stock’s intrinsic value and its market value and understand the concept of equilibrium in the market. Briefly explain three important trends that have been occurring in business that have implications for managers. ? Define business ethics and briefly explain what companies are doing in response to a renewed interest in ethics, the consequences of unethical behavior, and how employees should deal with unethical behavior. ? Briefly explain the conflicts between managers and stockholders, and explain useful motivational tools that can help to prevent t hese conflicts. Identify the key officers in the organization and briefly explain their responsibilities. Lecture Suggestions Chapter 1 covers some important concepts, and discussing them in class can be interesting. However, students can read the chapter on their own, so it can be assigned but not covered in class. We spend the first day going over the syllabus and discussing grading and other mechanics relating to the course. To the extent that time permits, we talk about the topics that will be covered in the course and the structure of the book.We also discuss briefly the fact that it is assumed that managers try to maximize stock prices, but that they may have other goals, hence that it is useful to tie executive compensation to stockholder-oriented performance measures. If time permits, we think it’s worthwhile to spend at least a full day on the chapter. If not, we ask students to read it on their own, and to keep them honest, we ask one or two questions about the mate rial on the first mid-term exam.One point we emphasize in the first class is that students should print a copy of the PowerPoint slides for each chapter covered and purchase a financial calculator immediately, and bring both to class regularly. We also put copies of the various versions of our â€Å"Brief Calculator Manual,† which in about 12 pages explains how to use the most popular calculators, in the copy center. Students will need to learn how to use their calculators immediately as time value of money concepts are covered in Chapter 2. It is important for students to grasp these concepts early as many of the remaining chapters build on the TVM concepts.We are often asked what calculator students should buy. If they already have a financial calculator that can find IRRs, we tell them that it will do, but if they do not have one, we recommend either the HP-10BII or 17BII. Please see the â€Å"Lecture Suggestions† for Chapter 2 for more on calculators. DAYS ON CHAPT ER: 1 OF 58 DAYS (50-minute periods) Answers to End-of-Chapter Questions 1-1When you purchase a stock, you expect to receive dividends plus capital gains. Not all stocks pay dividends immediately, but those corporations that do, typically pay dividends quarterly.Capital gains (losses) are received when the stock is sold. Stocks are risky, so you would not be certain that your expectations would be met—as you would if you had purchased a U. S. Treasury security, which offers a guaranteed payment every 6 months plus repayment of the purchase price when the security matures. 1-2No, the stocks of different companies are not equally risky. A company might operate in an industry that is viewed as relatively risky, such as biotechnology—where millions of dollars are spent on R&D that may never result in profit.A company might also be heavily regulated and this could be perceived as increasing its risk. Other factors that could cause a company’s stock to be viewed as re latively risky include: heavy use of debt financing vs. equity financing, stock price volatility, and so on. 1-3If investors are more confident that Company A’s cash flows will be closer to their expected value than Company B’s cash flows, then investors will drive the stock price up for Company A. Consequently, Company A will have a higher stock price than Company B. -4No, all corporate projects are not equally risky. A firm’s investment decisions have a significant impact on the riskiness of the stock. For example, the types of assets a company chooses to invest in can impact the stock’s risk—such as capital intensive vs. labor intensive, specialized assets vs. general (multipurpose) assets—and how they choose to finance those assets can also impact risk. 1-5A firm’s intrinsic value is an estimate of a stock’s â€Å"true† value based on accurate risk and return data. It can be estimated but not measured precisely.A sto ck’s current price is its market price—the value based on perceived but possibly incorrect information as seen by the marginal investor. From these definitions, you can see that a stock’s â€Å"true long-run value† is more closely related to its intrinsic value rather than its current price. 1-6Equilibrium is the situation where the actual market price equals the intrinsic value, so investors are indifferent between buying or selling a stock. If a stock is in equilibrium then there is no fundamental imbalance, hence no pressure for a change in the stock’s price.At any given time, most stocks are reasonably close to their intrinsic values and thus are at or close to equilibrium. However, at times stock prices and equilibrium values are different, so stocks can be temporarily undervalued or overvalued. 1-7If the three intrinsic value estimates for Stock X were different, I would have the most confidence in Company X’s CFO’s estimate. In trinsic values are strictly estimates, and different analysts with different data and different views of the future will form different estimates of the intrinsic value for any given stock.However, a firm’s managers have the best information about the company’s future prospects, so managers’ estimates of intrinsic value are generally better than the estimates of outside investors. 1-8If a stock’s market price and intrinsic value are equal, then the stock is in equilibrium and there is no pressure (buying/selling) to change the stock’s price. So, theoretically, it is better that the two be equal; however, intrinsic value is a long-run concept. Management’s goal should be to maximize the firm’s intrinsic value, not its current price.So, maximizing the intrinsic value will maximize the average price over the long run but not necessarily the current price at each point in time. So, stockholders in general would probably expect the firmâ⠂¬â„¢s market price to be under the intrinsic value—realizing that if management is doing its job that current price at any point in time would not necessarily be maximized. However, the CEO would prefer that the market price be high—since it is the current price that he will receive when exercising his stock options.In addition, he will be retiring after exercising those options, so there will be no repercussions to him (with respect to his job) if the market price drops—unless he did something illegal during his tenure as CEO. 1-9The board of directors should set CEO compensation dependent on how well the firm performs. The compensation package should be sufficient to attract and retain the CEO but not go beyond what is needed. Compensation should be structured so that the CEO is rewarded on the basis of the stock’s performance over the long run, not the stock’s price on an option exercise date.This means that options (or direct stock awards) sho uld be phased in over a number of years so the CEO will have an incentive to keep the stock price high over time. If the intrinsic value could be measured in an objective and verifiable manner, then performance pay could be based on changes in intrinsic value. However, it is easier to measure the growth rate in reported profits than the intrinsic value, although reported profits can be manipulated through aggressive accounting procedures and intrinsic value cannot be manipulated.Since intrinsic value is not observable, compensation must be based on the stock’s market price—but the price used should be an average over time rather than on a spot date. 1-10The three principal forms of business organization are sole proprietorship, partnership, and corporation. The advantages of the first two include the ease and low cost of formation. The advantages of the corporation include limited liability, indefinite life, ease of ownership transfer, and access to capital markets.The disadvantages of a sole proprietorship are (1) difficulty in obtaining large sums of capital; (2) unlimited personal liability for business debts; and (3) limited life. The disadvantages of a partnership are (1) unlimited liability, (2) limited life, (3) difficulty of transferring ownership, and (4) difficulty of raising large amounts of capital. The disadvantages of a corporation are (1) double taxation of earnings and (2) setting up a corporation and filing required state and federal reports, which are complex and time-consuming. 1-11Stockholder wealth maximization is a long-run goal.Companies, and consequently the stockholders, prosper by management making decisions that will produce long-term earnings increases. Actions that are continually shortsighted often â€Å"catch up† with a firm and, as a result, it may find itself unable to compete effectively against its competitors. There has been much criticism in recent years that U. S. firms are too short-run profit-oriente d. A prime example is the U. S. auto industry, which has been accused of continuing to build large â€Å"gas guzzler† automobiles because they had higher profit margins rather than retooling for smaller, more fuel-efficient models. -12Useful motivational tools that will aid in aligning stockholders’ and management’s interests include: (1) reasonable compensation packages, (2) direct intervention by shareholders, including firing managers who don’t perform well, and (3) the threat of takeover. The compensation package should be sufficient to attract and retain able managers but not go beyond what is needed. Also, compensation packages should be structured so that managers are rewarded on the basis of the stock’s performance over the long run, not the stock’s price on an option exercise date.This means that options (or direct stock awards) should be phased in over a number of years so managers will have an incentive to keep the stock price hig h over time. Since intrinsic value is not observable, compensation must be based on the stock’s market price—but the price used should be an average over time rather than on a spot date. Stockholders can intervene directly with managers. Today, the majority of stock is owned by institutional investors and these institutional money managers have the clout to exercise considerable influence over firms’ operations.First, they can talk with managers and make suggestions about how the business should be run. In effect, these institutional investors act as lobbyists for the body of stockholders. Second, any shareholder who has owned $2,000 of a company’s stock for one year can sponsor a proposal that must be voted on at the annual stockholders’ meeting, even if management opposes the proposal. Although shareholder-sponsored proposals are non-binding, the results of such votes are clearly heard by top management. If a firm’s stock is undervalued, t hen corporate raiders will see it to be a bargain and will attempt to capture the firm in a hostile takeover.If the raid is successful, the target’s executives will almost certainly be fired. This situation gives managers a strong incentive to take actions to maximize their stock’s price. 1-13a. Corporate philanthropy is always a sticky issue, but it can be justified in terms of helping to create a more attractive community that will make it easier to hire a productive work force. This corporate philanthropy could be received by stockholders negatively, especially those stockholders not living in its headquarters city.Stockholders are interested in actions that maximize share price, and if competing firms are not making similar contributions, the â€Å"cost† of this philanthropy has to be borne by someone–the stockholders. Thus, stock price could decrease. b. Companies must make investments in the current period in order to generate future cash flows. Sto ckholders should be aware of this, and assuming a correct analysis has been performed, they should react positively to the decision. The Mexican plant is in this category. Capital budgeting is covered in depth in Part 4 of the text.Assuming that the correct capital budgeting analysis has been made, the stock price should increase in the future. c. U. S. Treasury bonds are considered safe investments, while common stock are far more risky. If the company were to switch the emergency funds from Treasury bonds to stocks, stockholders should see this as increasing the firm’s risk because stock returns are not guaranteed—sometimes they go up and sometimes they go down. The firm might need the funds when the prices of their investments were low and not have the needed emergency funds.Consequently, the firm’s stock price would probably fall. 1-14a. No, TIAA-CREF is not an ordinary shareholder. Because it is one of the largest institutional shareholders in the United St ates and it controls nearly $280 billion in pension funds, its voice carries a lot of weight. This â€Å"shareholder† in effect consists of many individual shareholders whose pensions are invested with this group. b. The owners of TIAA-CREF are the individual teachers whose pensions are invested with this group. c. For TIAA-CREF to be effective in wielding its weight, it must act as a coordinated unit.In order to do this, the fund’s managers should solicit from the individual shareholders their â€Å"votes† on the fund’s practices, and from those â€Å"votes† act on the majority’s wishes. In so doing, the individual teachers whose pensions are invested in the fund have in effect determined the fund’s voting practices. 1-15Earnings per share in the current year will decline due to the cost of the investment made in the current year and no significant performance impact in the short run. However, the company’s stock price should increase due to the significant cost savings expected in the future. -16The board of directors should set CEO compensation dependent on how well the firm performs. The compensation package should be sufficient to attract and retain the CEO but not go beyond what is needed. Compensation should be structured so that the CEO is rewarded on the basis of the stock’s performance over the long run, not the stock’s price on an option exercise date. This means that options (or direct stock awards) should be phased in over a number of years so the CEO will have an incentive to keep the stock price high over time.If the intrinsic value could be measured in an objective and verifiable manner, then performance pay could be based on changes in intrinsic value. Since intrinsic value is not observable, compensation must be based on the stock’s market price—but the price used should be an average over time rather than on a spot date. The board should probably set the CEOà ¢â‚¬â„¢s compensation as a mix between a fixed salary and stock options. The vice president of Company X’s actions would be different than if he were CEO of some other company. 17.Setting the compensation policy for three division managers would be different than setting the compensation policy for a CEO because performance of each of these managers could be more easily observed. For a CEO an award based on stock price performance makes sense, while in this situation it probably doesn’t make sense. Each of the managers could still be given stock awards; however, rather than the award being based on stock price it could be determined from some observable measure like increased gas output, oil output, etc. Answers to End-of-Chapter ProblemsWe present here some intermediate steps and final answers to end-of-chapter problems. Please note that your answer may differ slightly from ours due to rounding differences. Also, although we hope not, some of the problems may have mor e than one correct solution, depending on what assumptions are made in working the problem. Finally, many of the problems involve some verbal discussion as well as numerical calculations; this verbal material is not presented here. 2-1FV5 = $16,105. 10. 2-2PV = $1,292. 10. 2-3I/YR = 8. 01%. 2-4N = 11. 01 years. 2-5N = 11 years. 2-6FVA5 = $1,725. 22; FVA5 Due = $1,845. 99. 2-7PV = $923. 98; FV = $1,466. 4. 2-8PMT = $444. 89; EAR = 12. 6825%. 2-9a. $530. d. $445. 2-10a. $895. 42. b. $1,552. 92. c. $279. 20. d. $499. 99; $867. 13. 2-11a. 14. 87%. 2-12b. 7%. c. 9%. d. 15%. 2-13a. 10. 24 years. c. 4. 19 years. 2-14a. $6,374. 97. d(1). $7,012. 47. 2-15a. $2,457. 83. c. $2,000. d(1). $2,703. 61. 2-16PV7% = $1,428. 57; PV14% = $714. 29. 2-179%. 2-18a. Stream A: $1,251. 25. 2-19a. $423,504. 48. b. $681,537. 69. c(2). $84,550. 80. 2-20Contract 2; PV = $10,717,847. 14. 2-21a. 30-year payment plan; PV = $68,249,727. b. 10-year payment plan; PV = $63,745,773. c. Lump sum; PV = $61,000,000. 2-22a . $802. 43. c. $984. 88. 2-23a. $881. 7. b. $895. 42. c. $903. 06. d. $908. 35. e. $910. 97. 2-24a. $279. 20. b. $276. 84. c. $443. 72. 2-25a. $5,272. 32. b. $5,374. 07. 2-26$17,290. 89; $19,734. 26. 2-27a. Bank A = 4%. 2-28INOM = 7. 8771%. 2-293%. 2-30a. E = 63. 74 yrs. ; K = 41. 04 yrs. b. $35,825. 33. 2-31a. $35,459. 51. b. $27,232. 49. 2-32$496. 11. 2-33$17,659. 50. 2-34a. PMT = $10,052. 87. b. Yr 3: Int/Pymt = 9. 09%; Princ/Pymt = 90. 91%. 2-35a. PMT = $34,294. 65. b. PMT = $7,252. 78. c. Balloon PMT = $94,189. 69. 2-36a. $5,308. 12. b. $4,877. 09. 2-37a. 50 mos. b. 13 mos. c. $112. 38. 2-38$309,015. 2-39$36,950. 2-40$9,385. 3-1$1,000,000. 3-2$2,500,000. -3$3,600,000. 3-4$20,000,000. 3-5a, possibly c. 3-6$89,100,000. 3-7a. $50,000. b. $115,000. 3-8NI = $450,000; NCF = $650,000; OCF = $650,000. 3-910,500,000 shares. 3-10a. $2,400,000,000. b. $4,500,000,000. c. $5,400,000,000. d. $1,100,000,000. 3-11$12,681,482. 3-12a. $592 million. b. RE04 = $1,374 million. c. $1,600 million. d. $15 million. e. $620 million. 3-13a. $90,000,000. b. NOWC05 = $192,000,000; NOWC04 = $210,000,000. c. OC04 = $460,000,000; OC05 = $492,000,000. d. FCF = $58,000,000. 3-14a. $2,400,000. b. NI = 0; NCF = $3,000,000. c. NI = $1,350,000; NCF = $2,100,000. 4-1AR = $800,000. 4-2D/A = 58. 33%. 4-3TATO = 5; EM = 1. . 4-4M/B = 4. 2667. 4-5P/E = 12. 0. 4-6ROE = 8%. 4-7$112,500. 4-815. 31%. 4-9$142. 50. 4-10NI/S = 2%; D/A = 40%. 4-112. 9867. 4-12TIE = 2. 25. 4-13TIE = 3. 86. 4-14ROE = 23. 1%. 4-15(ROE = +5. 54%; QR = 1. 2. 4-167. 2%. 4-17a. 4-186. 0. 4-19$262,500. 4-20$405,682. 4-21$50. 4-22A/P = $90,000; Inv = $90,000; FA = $138,000. 4-23a. Current ratio = 1. 98; DSO = 76. 3 days; Total assets turnover = 1. 73; Debt ratio = 61. 9%. 4-24a. TIE = 11; EBITDA coverage = 9. 46; Profit margin = 3. 40%; ROE = 8. 57%. 6-1b. Upward sloping yield curve. c. Inflation expected to increase. d. Borrow long term. 6-22. 25%. 6-36%; 6. 33%. 6-41. 5%. 6-50. %. 6-621. 8%. 6-75. 5%. 6-88. 5%. 6-96. 8%. 6-106. 0 %. 6-111. 55%. 6-120. 35%. 6-131. 775%. 6-14a. r1 in Year 2 = 6%. b. I1 = 2%; I2 = 5%. 6-15r1 in Year 2 = 9%; I2 = 7%. 6-1614%. 6-177. 2%. 6-18a. r1 = 9. 20%; r5 = 7. 20%. 6-19a. 8. 20%. b. 10. 20%. c. r5 = 10. 70%. 7-1$935. 82. 7-2a. 7. 11%. b. 7. 22%. c. $988. 46. 7-3$1,028. 60. 7-4YTM = 6. 62%; YTC = 6. 49%; most likely yield = 6. 49%. 7-5a. VL at 5% = $1,518. 98; VL at 8% = $1,171. 19; VL at 12% = $863. 78. 7-6a. C0 = $1,012. 79; Z0 = $693. 04; C1 = $1,010. 02; Z1 = $759. 57; C2 = $1,006. 98; Z2 = $832. 49; C3 = $1,003. 65; Z3 = $912. 41; C4 = $1,000. 00; Z4 = $1,000. 00. -710-year, 10% coupon = 6. 75%; 10-year zero = 9. 75%; 5-year zero = 4. 76%; 30-year zero = 32. 19%; $100 perpetuity = 14. 29%. 7-815. 03%. 7-9a. YTM at $829 ? 15%. 7-10a. YTM = 9. 69%. b. CY = 8. 875%; CGY = 0. 816%. 7-11a. YTM = 10. 37%; YTC = 10. 15%; YTC. b. 10. 91%. c. -0. 54% (based on YTM); -0. 76% (based on YTC). 7-12a. YTM = 8%; YTC = 6. 1%. 7-13VB = $974. 42; YTM = 8. 64%. 7-1410. 78%. 7-15a. 5 years. b. YTC = 6. 47%. 7-16$987. 87. 7-17$1,067. 95. 7-188. 88%. 7-19a. ABS = 6. 3%; F = 8%. 7-20a. 8. 35%. b. 8. 13%. 8-1[pic] = 11. 40%; ( = 26. 69%; CV = 2. 34. 8-2bp = 1. 12. 8-3r = 10. 9%. 8-4rM = 11%; r = 12. 2%. 8-5a. = 1. b. r = 13%. 8-6a. [pic]Y = 14%. b. (X = 12. 20%. 8-7bp = 0. 7625; rp = 12. 1%. 8-8b = 1. 33. 8-94. 5%. 8-104. 2%. 8-11r = 17. 05%. 8-12rM – rRF = 4. 375%. 8-13a. ri = 15. 5%. b(1). rM = 15%; ri = 16. 5%. c(1). ri = 18. 1%. 8-14bN = 1. 16. 8-157. 2%. 8-16rp = 11. 75%. 8-171. 7275. 8-18a. $0. 5 million. d(2). 15%. 8-19a. CVX = 3. 5; CVY = 2. 0. c. rX = 10. 5%; rY = 12%. d. Stock Y. e. rp = 10. 875%. 8-20a. rA = 11. 30%. c. (A = 20. 8%; (p = 20. 1%. 8-21a. ri = 6% + (5%)bi. b. 15%. c. Indifference rate = 16%. 9-1D1 = $1. 6050; D3 = $1. 8376; D5 = $2. 0259. 9-2[pic] = $6. 25. 9-3[pic] = $21. 20; rs = 11. 30%. 9-4b. $37. 80. c. 34. 09. 9-5$60. 9-6rp = 8. 33%. 9-7a. 13. 33%. b. 10%. c. 8%. d. 5. 71%. 9-8a. $125. b. $83. 33. 9-9a. 10%. b. 10. 38%. 9-10$23. 75. 9 -11$13. 11. 9-12a(1). $9. 50. a(2). $13. 33. a(3). $21. 00. a(4). $44. 00. b(1). Undefined. b(2). -$48. 00, which is nonsense. 9-13a. rC = 8. 6%; rD = 5%. b. No; [pic] = $32. 61. 9-14[pic] = $27. 32. 9-15a. P0 = $32. 14. b. P0 = $37. 50. c. P0 = $50. 00. d. P0 = $78. 28. 9-16P0 = $19. 89. 9-17a. $713. 33 million. b. $527. 89 million. c. $42. 79. 9-186. 25%. 9-19a. $2. 10; $2. 205; $2. 31525. b. PV = $5. 29. c. $24. 72. d. $30. 00. e. $30. 00 9-20a. P0 = $54. 11; D1/P0 = 3. 55%; CGY = 6. 45%. 9-21a. 24,112,308. b. $321,000,000. c. $228,113,612. d. $16. 81. 9-22$35. 00. 9-23a. New price = $44. 26. b. beta = 0. 5107. 9-24a. $2. 01; $2. 31; $2. 66; $3. 06; $3. 52. b. P0 = $39. 43. c. D1/P0 2006 = 5. 10%; CGY2006 = 6. 9%; D1/P0 2011 = 7. 00%; CGY2011 = 5%. 10-1rd(1 – T) = 7. 80%. 10-2rp = 8%. 10-3rs = 13%. 10-4rs = 15%; re = 16. 11%. 10-5Projects A through E should be accepted. 10-6a. rs = 16. 3%. b. rs = 15. 4%. c. rs = 16%. d. rs AVG = 15. 9%. 10-7a. rs = 14. 83%. b. F = 10%. c. re = 15. 81%. 10-8rs = 16. 51%; WACC = 12. 79%. 10-9WACC = 12. 72%. 10-10WACC = 11. 4%. 10-11wd = 20%. 10-12a. rs = 14. 40%. b. WACC = 10. 62%. c.Project A. 10-13re = 17. 26%. 10-1411. 94%. 10-15a. g = 9. 10%. b. Payout = 50. 39%. 10-16a. g = 8%. b. D1 = $2. 81. c. rs = 15. 81%. 10-17a. g = 3%. b. EPS1 = $5. 562. 10-18a. rd = 7%; rp = 10. 20%; rs = 15. 72%. b. WACC = 13. 86%. c. Projects 1 and 2 will be accepted. 10-19a. Projects A, C, E, F, and H should be accepted. b. Projects A, F, and H should be accepted; $12 million. c. Projects A, C, F, and H should be accepted; $15 million. 10-20a. rd(1 – T) = 5. 4%; rs = 14. 6%. b. WACC = 10. 92%. 11-1NPV = $7,486. 68. 11-2IRR = 16%. 11-3MIRR = 13. 89%. 11-44. 34 years. 11-5DPP = 6. 51 years. 11-6a. 5%: NPVA = $3. 52; NPVB = $2. 87. 0%: NPVA = $0. 58; NPVB = $1. 04. 15%: NPVA = -$1. 91; NPVB = -$0. 55. b. IRRA = 11. 10%; IRRB = 13. 18%. c. 5%: Choose A; 10%: Choose B; 15%: Do not choose either one. 11-7a. NPVA = $866. 16; IRRA = 19. 86%; MIRRA = 17. 12%; PaybackA = 3 yrs; Discounted Payback = 4. 17 yrs; NPVB = $1,225. 25; IRRB = 16. 80%; MIRRB = 15. 51%; PaybackB = 3. 21 yrs; Discounted Payback = 4. 58 yrs. 11-8a. Without mitigation: NPV = $12. 10 million; With mitigation: NPV = $5. 70 million. 11-9a. Without mitigation: NPV = $15. 95 million; With mitigation: NPV = -$11. 25 million. 11-10Project A; NPVA = $30. 16. 11-11NPVS = $448. 86; NPVL = $607. 0; Accept Project L. 11-12IRRL = 11. 74%. 11-13MIRRX = 13. 59%. 11-14a. HCC; PV of costs = -$805,009. 87. c. HCC; PV of costs = -$767,607. 75. LCC; PV of costs = -$686,627. 14. 11-15a. IRRA = 20%; IRRB = 16. 7%; Crossover rate ? 16%. 11-16a. NPVA = $14,486,808; NPVB = $11,156,893; IRRA = 15. 03%; IRRB = 22. 26%. b. Crossover rate ? 12%. 11-17a. NPVA = $200. 41; NPVB = $145. 93. b. IRRA = 18. 1%; IRRB = 24. 0%. c. MIRRA = 15. 10%; MIRRB = 17. 03%. f. MIRRA = 18. 05%; MIRRB = 20. 48%. 11-18a. No; PVOld = -$89,910. 08; PVNew = -$94,611. 45. b. $2,470. 80. c. 22. 94%. 11-19b. NPV10% = -$99,174; NPV20% = $500,000. d. 9. 54%; 22. 7%. 11-20$10,239. 20. 11-21MIRR = 10. 93%. 11-22$250. 01. 12-1a. $12,000,000. 12-2a. $2,600,000. 12-3$4,600,000. 12-4b. Accelerated method; $12,781. 64. 12-5E(NPV) = $3,000,000; (NPV = $23. 622 million; CV = 7. 874. 12-6a. -$178,000. b. $52,440; $60,600; $40,200. c. $48,760. d. NPV = -$19,549; Do not purchase. 12-7b. -$126,000. c. $42,518; $47,579; $34,926. d. $50,702. e. NPV = $10,841; Purchase. 12-8a. Expected CFA = $6,750; Expected CFB = $7,650; CVA = 0. 0703. b. NPVA = $10,036; NPVB = $11,624. 12-9NPV5 = $2,211; NPV4 = -$2,081; NPV8 = $13,329. 12-10a. NPV = $37,035. 13. b. +20%: $77,975. 63; -20%: NPV = -$3,905. 37. c.E(NPV) = $34,800. 21; (NPV = $35,967. 84; CV = 1. 03. 13-1a. E(NPV) = -$446,998. 50. b. E(NPV) = $2,806,803. 16. c. $3,253,801. 66. 13-2a. Project B; NPVB = $2,679. 46. b. Project A; NPVA = $3,773. 65. c. Project A; EAAA = $1,190. 48. 13-3NPV190-3 = $20,070; NPV360-6 = $22,256. 13-4A; EAAA = $1,407. 85. 1 3-5Projects A, B, C, and D; Optimal capital budget = $3,900000. 13-6NPVA = $9. 93 million. 13-7Machine B; Extended NPVB = $3. 67 million. 13-8EAAY = $7,433. 12. 13-9Wait; NPV = $2,212,964. 13-10No, NPV3 = $1,307. 29. 13-11a. Accept A, B, C, D, and E; Capital budget = $5,250,000. b. Accept A, B, D, and E; Capital budget = $4,000,000. c.Accept B, C, D, E, F, and G; Capital budget = $6,000,000. 13-12a. NPV = $4. 6795 million. b. No, NPV = $3. 2083 million. c. 0. 13-13a. NPV = -$2,113,481. 31. b. NPV = $1,973,037. 39. c. E(NPV) = -$70,221. 96. d. E(NPV) = $832,947. 27. e. $1,116,071. 43. 14-1QBE = 500,000. 14-230% debt and 70% equity. 14-3a. E(EPSC) = $5. 10. 14-4bU = 1. 0435. 14-5a. ROELL = 14. 6%; ROEHL = 16. 8%. b. ROELL = 16. 5%. 14-6a(1). -$60,000. b. QBE = 14,000. 14-7No leverage: ROE = 10. 5%; ( = 5. 4%; CV = 0. 51; 60% leverage: ROE = 13. 7%; ( = 13. 5%; CV = 0. 99. 14-8rs = 17%. 14-9a. P0 = $25. b. P0 = $25. 81. 14-10a. FCA = $80,000; VA = $4. 80/unit; PA = $8. 0/unit. 14-11a. 10. 96%. b. 1. 25. c. 1. 086957. d. 14. 13%. e. 10. 76%. 14-12a. EPSOld = $2. 04; New: EPSD = $4. 74; EPSS = $3. 27. b. 339,750 units. c. QNew, Debt = 272,250 units. 14-13Debt used: E(EPS) = $5. 78; (EPS = $1. 05; E(TIE) = 3. 49(. Stock used: E(EPS) = $5. 51; (EPS = $0. 85; E(TIE) = 6. 00(. 15-1Payout = 55%. 15-2P0 = $60. 15-3P0 = $40. 15-4D0 = $3. 44. 15-5$3,250,000. 15-6Payout = 31. 39%. 15-7a. $1. 44. b. 3%. c. $1. 20. d. 33? %. 15-8a. 12%. b. 18%. c. 6%; 18%. d. 6%. e. 28,800 new shares; $0. 13 per share. 15-9a(1). $3,960,000. a(2). $4,800,000. a(3). $9,360,000. a(4). Regular = $3,960,000; Extra = $5,400,000. c. 5%. d. 15%. 16-1103. 41 days; 86. 99 days; $400,000; $32,000. 16-273 days; 30 days; $1,178,082. 16-3$1,205,479; 20. 5%; 22. 4%; 10. 47%; bank debt. 16-4a. 83 days. b. $356,250. c. 4. 87(. 16-5a. DSO = 28 days. b. A/R = $70,000. 16-6a. 32 days. b. $288,000. c. $45,000. d(1). 30. d(2). $378,000. 16-7a. 57. 33 days. b(1). 2(. b(2). 12%. c(1). 46. 5 days. c(2). 2. 1262(. c(3 ). 12. 76%. 16-8a. ROET = 11. 75%; ROEM = 10. 80%; ROER = 9. 16%. 16-9b. $420,000. c. $35,000. 16-10a. Oct. loan = $22,800. 17-1AFN = $410,000. 17-2AFN = $610,000. 17-3AFN = $200,000. 17-4a. $133. 50 million. b. 39. 06%. 17-5a. $5,555,555,556. b. 30. 6%. c. $13,600,000. 7-6$67 million; 5. 01. 17-7$156 million. 17-8a. $480,000. b. $18,750. 17-9? S = $68,965. 52. 17-10$34. 338 million; 34. 97 ? 35 days. 17-11$19. 10625 million; 6. 0451. 17-12a. $2,500,000,000. b. 24%. c. $24,000,000. 17-13a. AFN = $128,783. b. 3. 45%. 17-14a. 33%. b. AFN = $2,549. c. ROE = 13. 06%. 18-1a. $5. 00. b. $2. 00. 18-2$27. 00; $37. 00. 18-3a, b, and c. 18-4$1. 82. 18-5rd = 5. 95%; $91,236. 18-6b. Futures = +$4,180,346; Bond = -$2,203,701; Net = $1,976,645. 18-7a. $3. 06; $4. 29. b. 16. 67%, 61. 46%; -100%. c. -16. 67%; -100%; 63. 40%. d. No; $30. 00 and $27. 00. e. Yes; $37. 50 and $37. 50. 19-10. 6667 pound per dollar. 9-227. 2436 yen per shekel. 19-31 yen = $0. 00907. 19-41 euro = $0. 68966 or $1 = 1. 45 e uros. 19-5 |Dollars per 1,000 Units of: | |Pounds |Can. Dollars |Euros |Yen |Pesos |Kronas | |$1,747. 10 |$820. 60 |$1,206. 90 |$8. 97 |$93. 10 |$128. 10 | 19-76. 49351 krones. 19-815 kronas per pound. 19-10rNOM-U. S. = 4. 6%. 19-11117 pesos. 19-12b. $1. 6488. 19-13a. $2,772,003. b. $2,777,585. c. $3,333,333. 19-14+$250,000. 19-15b. $19,865. 19-16$468,837,209. 19-17a. $52. 63; 20%. b. 1. 5785 SF per U. S. $. c. 41. 54 Swiss francs; 16. 92%. 20-155. 6%; 50%. 20-2$196. 6. 20-3CR = 25 shares. 20-4a. D/AJ-H = 50%; D/AM-E = 67%. 20-5a. PV cost of leasing = -$954,639; Lease equipment. 20-6a. EV = -$3; EV = $0; EV = $4; EV = $49. d. 9%; $90. 20-8a. PV cost of owning = -$185,112; PV cost of leasing = -$187,534; Purchase loom. 20-9b. Percent ownership: Original = 80%; Plan 1 = 53%; Plans 2 and 3 = 57%. c. EPS0 = $0. 48; EPS1 = $0. 60; EPS2 = $0. 64; EPS3 = $0. 86. d. D/A0 = 73%; D/A1 = 13%; D/A2 = 13%; D/A3 = 48%. 21-1P0 = $37. 04. 21-2P0 = $43. 48. 21-3$37. 04 to $43. 48. 21-4a. 16. 8%. b. V = $14. 93 million. 21-5NPV = -$6,747. 71; Do not purchase. 21-6a. 14%. b. TV = $1,143. 4; V = $877. 2.

Gavin Menzies’ Voyages

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Infection Control Research Paper Example | Topics and Well Written Essays - 2750 words

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Only conduct a paragraph(250words) for a topic given - Coursework Example or example teachers, during tutoring sessions, can give feedback to students verbally, which in turn, enables students improve on their accuracy and nurture their confidence (Smith, 1997, Ferris and Robert, 2001) . Peers can also make significant contributions to the students’ writing development , by proving the student writers with a glimpse of reader-based feedback on their writing efforts (Black et al., 2003, Yang et al., 2006). Without feedback, there is little learning. Ferris and Roberts (2001) reported that students who received feedback, whichever form, improved their writing. However, the worth of teacher feedback in writing, particularly, in second language writing classes, has been subject to controversy (Ferris, 2004). If feedback is given students at the end of students’ writing, the students do not find the comments invaluable, as intended by the teacher(s). Few students are interested in incorporating the feedback to already graded work (Black et al., 20 03, Peterson, 2010). Therefore, feedback only becomes significant to writing development, if it is given in the beginning and middle stages (Peterson, 2010). A study has revealed that most students rely on teacher feedback, without necessarily understand their significance, in part, because the teachers are authoritative (Yang et al., 2006). In some cases, the teacher’s written comments are illegible (Lee, 2008),making it hard for the students to understand. FERRIS, D., R. 2004. The ‘‘Grammar Correction’’ Debate in L2 Writing :Where are we, and where do we go from here?(and what do we do in the meantime...?). Journal of Second Language Writing 13, 49-62. PETERSON, S. S. 2010. Improving Stdent Writing: Using Feedback as a Teaching Tool. What Works: Research Into Practice. A research-into-practice series produced by a partnership between the Literacy and Numeracy Secretariat and the Ontario Association of Deans of

Pros and Cons of Tariffs Essay Example | Topics and Well Written Essays - 1750 words

Pros and Cons of Tariffs - Essay Example The essay "Pros and Cons of Tariffs" analyzes what we need the taxes for, their functions, their advantages, and disadvantages. Tariffs are known as custom, import duties, or import fees are generally barriers to trade that protect the locally produced goods and promoting domestic industries. One of the basic components of tariff system is tariff classification. National tariffs are organized in such a manner that they consist of tariff classification numbers that are assigned to goods and corresponding tariff rates. The other component of tariffs is a valuation of goods for tariff purposes. The effects of import tariffs cannot be under estimated for it raises domestic prices in the country imposing the tariff. In countries that do not have an influence on the international prices, the amount of the tariff however in countries that have an impact on the international prices, the prices are less than a number of tariffs due to the fact that part of the tariff is reflected in a reduction in international prices. Placing a tariff on an imported good has a number of outcomes, which are quite advantageous to the home country. Use of tariffs can come in time when the government would like to protect local infant industries against stiff competition. Many developing nations employ the Import Substitution Industrialization strategy. The government may even levy tariffs of goods in industries they would like to invest in the country. This will provide local industries an advantage of production of cheap goods.

Ackermann's Function Research Paper Example | Topics and Well Written Essays - 500 words

Ackermann's Function - Research Paper Example After Ackermann made a publication of his particular function (having only three non-integer functions) a lot of efforts have been done by other authors in the process of modifying the function to apply to various situations, so that at present, this particular function can apply effectively to the numerous variants that comprise the very original function. One of the common versions of the Ackermann’s function is the Ackermann-Peter function, which is a two-argument, is often defined using the non-negative integers m and n as shown (Hazewinkel 2001). From the function below, one can easily deduce that the values are growing and expanding rapidly, even for the tiny inputs (Monin 2003). For instance, take A (4,2), and one can easily see that it is an integer comprising of about 19, 729 decimal digits. Inasmuch as this function has been used widely with success, it has been termed as quite ineffective especially when it comes to computing complex numbers, making the process very slow. The complexity associated with this function often grows quite fast, especially when it comes to its memory and run-time. For this reason, it is often the best and widely used in the process of teaching learners some of the complex types of various recursions. Additionally, it is also used as a test case especially when it comes to compiler development used in optimizing recursions. The numbers used in the illustration for the issue of A (4, n) seem to be quite large, such that one can describe the Ackermann’s function as being extremely slow especially when it comes to computing very large numbers (Sundblad 2003). Inasmuch as the numbers tend to grow very quickly, this function is often concerned with making recursions and subtractions. Following this realization, one can therefore devise some other shortcuts that can bring about another function deemed efficient and effective as shown. The sequence of numbers

Jihadism constituted a radical break from earlier traditions of Essay

Jihadism constituted a radical break from earlier traditions of Islamism - Essay Example Jihad has a very long history in Islamic world and it started since it was allowed under the basic tenets of Islam. This was done in order to allow Prophet (PBUH) so that the religion can be spread and the power and strength of Islam as a religion and Muslims as a community can be established. In order to understand the concepts of Jihad as outlined in the Islam and as they are being practiced now, it is really critical to understand the overall concept of Jihad and how it has been outlined by the Islam in it original principles. Further, it is also critical to explore as to how the Jihad is being conceived and practiced now and whether there is a drift from the earlier established principles or not. It has been argued that the Jihad as it is practiced now is a complete shift from the earlier traditions of Islam and is now believed to be practiced in a manner which marks a complete shift from the same. Whether this is the case or not or whether Jihad is exactly practiced the way earl ier traditions outlined is the topic which this paper will attempt to explore and discuss. The literal meaning of the word Jihad in Arabic is struggle and is a noun in Arabic language. The word Jihad has appeared in the Quran for more than 40 times however, indirect references to the metaphysical meanings of the word have also been made in Quran on various occasions. Quranic interpretation of Jihad therefore indicates a struggle in the way of Allah and is considered as one of the important religious duties for the Muslims. There are various instances in Muslim history in which Prophet (PBUH) has considered doing Jihad under different conditions. The overall importance which has been attached to it is because it is not only mentioned in Quran but it was also practiced by the Prophet (PBUH) himself. (Burgat & Dowell, 1993) There are various instances in the Islamic history wherein Prophet (PBUH) has specifically mentioned that the greater Jihad is the struggle against one’s own desires. Based on this, Jihad is therefore often divided into two categories i.e. lesser Jihad and greater Jihad or Jihad e Akbar. Greater Jihad is often referred to the notion where a pious Muslim has to strive against his wishes and ego and make a complete surrender to the Will of Allah. Such surrendering to the will of Allah and renunciation of the worldly wishes is therefore given a greater significance in Islam as compared to the waging a lesser Jihad in the way of Allah. It is also argued that Jihad has also been named as a process to bring a balance between Islam, faith and righteous living. This so called spiritual struggle is still considered as one of the fundamental aspects of defining the Jihad and its right context. This concept is relatively more critically in order to accurately trace down the differences between the Jihad as described in the earlier traditions of Islam and how it is being practiced now. The visible differences between the approach of the moderate Mu slims and more fundamentalist Muslims towards the interpretation of Jihad and its actual place in ordinary Muslim Life is one of the fundamental arguments which need to be discussed further. Jihad is often used within three different contexts i.e. jihad or struggle to correct oneself and fight with oneself in order to correct the faith of an individual, Jihad in order to improve the Muslim society and Jihad as a holy war. It is this third concept of jihad as a holy war which has attracted much of the significance and importance over the period of time because of its direct and indirect influences on the other communities i.e. non- Muslims. The original concept of Jihad and its allowing in Quran is often considered as the time

The medieval era and The Renaissance Era Research Paper

The medieval era and The Renaissance Era - Research Paper Example The Middle age was followed by the Renaissance movement which evolved in the 14th century. Renaissance is divided in to three important periods that are the Early Renaissance, High Renaissance and Late Renaissance or Mannerism. There was a substantial turn over in arts during this period as it was given more financial attention compared to the former Era. The art groomed and flourished as the artists paid more attention to the perspective. The paintings, sculptures and drawing were realistic and a sense of emotion was expressed in the art. Human body was given immense importance. The beauty of human physique was appreciated through arts. The artists of the Renaissance movement played with colors. They applied the techniques of light, color and space used by the ancient Roman and the Greek. Their focus was more worldly and secular. The artists drew paintings that manifested the social life and routine activities of the people. The concept of linear perspective was also introduced whic h helped the artists to create illusions of space and distance on a level surface. Hence art was exuberated. The art in this Era was modernized. The paintings now exhibited man studying philosophy and math rather than praying to God. This drastic change in the field of arts was attributed to the diminishing belief of the people in religion. For instance the painting of Jan Van Eyck depicted a couple being married in a room rather than a church. Although people adopted the modern style of arts there was an indelible relation.

High School Life Essay Example for Free

High School Life Essay High school is a place where young teens learn to become mature and responsible. It is a place where students get trained to take on bigger challenges in life. Obstacles such as college. From my own personal experiences, high school didnt seem that way. Students were more concerned about getting a passing grade then about what they were taught. They would even cheat their way out of high school. This would prepare them for college. My freshman year of high school, I was in a totally different place and it seemed quite interesting and fascinating at first. As the year passed by, I started to notice the techniques students were using to pass classes. It was something I didnt see while I was in junior high school. Students were cheating on almost all the tests. They would bring little print-out cheat sheets to class to use on the tests. Hardly anyone got caught by the teacher. When students did get caught, all they would do is deny and usually the teacher would just let them get away with it. As Casey Banas wrote in Why Students Are Turned Off? I sometimes estimated that half to two-thirds of a class cheated on a given test, Glanz said. Worse, Ive encountered students who feel no remorse about cheating but are annoyed that a teacher has confronted them on their actions (Banas 659). Cheating seemed like the popular thing to do and if you didnt cheat you would be considered real foolish.. Everyone in the class knew what was going on and it was basically a whole class effort to cheat. Students would discuss what the answers were before taking the test and give each other opinions on how to cheat safely. When the test came back, every student in the class would have a real close score, but the teachers didnt seem to notice anything at all. Most of the students that go into a certain class usually wouldnt even know what went on even after the class has ended. As Casey Banas wrote: The teacher is convinced that the subject matter is worth knowing, but the student may not agree. Many students, Glanz said, are not convinced they need to know what teachers teach; but they believe good grades are needed to get into college†¦.(Banas 659) These kids could literally just sit there for forty-five minutes daydreaming. I find that many students feel the classes are extremely boring and is of no use to them in the future. I always used to ask myself Why do I need to know this stuff for?. When students feel this way, they dont do the work because they dont think they need it in life. When I used to go to high school, my whole class would get assignments and home works and about almost three-fourths of the class didnt do it. Instead they would wait until someone who was paying attention and did do the assignment to come along and let them copy the assignment. They would do it in way that the teacher wouldnt even know by slightly changing some words here and there. After that, that paper gets passed around the entire class to the students who didnt do the assignment and everyone would have a slightly different paper. This way all the students hand in the assignment and will get a passing grade, but did they even learn anything?. These techniques that were used in the high school that I attended did work and a lot of students graduated from high school using these techniques. I, myself, used these techniques and got through my freshman year. As time went on I found that high school was really boring so I decided to cut and eventually dropped-out of school. These students got good grades and did all the assignments, but the truth is, they didnt learn much at all. They can have a 85 average and get into a good college, but will they be prepared enough to survive college level work? I dont think so.