Poetry and Happiness

In the poem, â€Å"Happiness†, the poet, Priscilla Leonard, illustrates for the reader that happiness cannot be contained and that one human cannot own all happiness. The poem happiness is about how to live life to the fullest. In the first two lines of the poem, †Happiness is a crystal/ fair and exquisite and clear† the feeling and emotion that the poet gives the reader, is peaceful and tranquil(1-2). Leonard throws a different perspective at the reader when she write ,†broken in a million pieces/shattered scattered far and near(4-5).The emotion has now been cut off. It is like an alarm clock to the reader. She goes onto say in the last part of the stanza that if one understands this and â€Å"now and then along life’s pathway/lo! Some shining fragments fall† and they are lucky enough to behold these pieces of happiness, they will experience great joy(5-6). Leonard writes that â€Å"there are so many pieces/ no one ever finds them all† t o say happiness is not bought, nor to be stolen, but it is to be earned, found, and given to one another(7-8). There are different pieces of happiness.Some pieces of happiness that Leonard says, are that â€Å"you may find a bit of beauty/or an honest share of wealth†(9-10). beauty and honest wealth are two things modern women wish to have and to be. Leonard being a woman might have placed these two elements of beauty to reach out to certain woman readers, so that they could relate to the poem. Leonard tells a tale about a neighbor, and how their greed got them no happiness, and no matter how much they searched and reached out to grab all happiness, it escaped their grasp.Before that she tells of the wise on their journey of life. She wrote that they â€Å"treasure every fragment clear/[and] fit them as they may together/imaging the shattered sphere†(17-19). The wise care about and realize that they are â€Å"to be ever thankful† even though their share of wisdo m is tiny, they understand that â€Å"it has so many pieces no one ever finds them all†(20,22-23). The wise know that their gift of happiness is being wise and that there are also many other great gifts in the world. There is, of course, a difference etween the fool and the wise. Once the fool receives a gift , he tries to get all he can. The wise get a gift and know to be satisfied with what they have, and not to wander around looking for more satisfaction. The wise, being wise imagine not just a sphere that the poet has put into context for u, but the true meaning of happiness. The reason why the author uses a crystal ball as a symbol for happiness is because a crystal seems fragile and priceless, but at the same time a sense of immortality.A crystal is treasured and admired by all who see it. Thieves and fools want it so they can have more pleasures. Respectable and wise people use it as a gift and are humble. Holding all happiness in your hands can have a strange effect t hough. Even some of the wisest men have fallen under its luring spell. Don’t be deceived by happiness, it is like a double-edged sword. If people would pay more careful attention to poets like Priscilla Leonard there might not be so many corrupted souls in the world.Happiness is not a toy that can be pulled out and played with, only to be lost when searching for more. Since happiness cannot be contained, but it can easily be destructive and lost. Treat it like a crystal; clear, true, and exquisite. When happiness seems to be out of reach, wait a little until some falls on your lap. Until then admire it as you would a passing cloud. This close reading has helped to take a step back and to realize the value of looking at life through a wide angled lens. And to not just look at happiness, but in all the elements of life.

Low Carbon Emission Family Hatchback Development Engineering Essay

In this quickly developing universe, the chief menace that is being faced is on fossil fuel. As every twelvemonth base on balls by, the sum of fuels used are traveling up the grade of the old old ages. If this rate keeps increasing, the dodo fuels will be wholly depleted to a province that these fossil fuels will merely be known in names and due to the increased usage of these fuels have led to the all sorts of pollution. In the recent survey, it was proved that automotive Fieldss are one with the greater ingestion and fouling rate compared to other Fieldss utilizing fossil fuels. And, one of those pollution jeopardies is addition in C footmark, which is the entire sum nursery gases produced. In order to confront the approaching menace, a new construct has been developed which would cut down the ingestion of fossil fuels and pollution jeopardies. A construct of an electric auto with lower limit or zero emanation and eco friendly characteristics accommodating to the nature protection is to be developed. 1.0 Purposes: To develop, a construct on a household hatch back vehicle with low C emanation which is powered by electricity and designed for an urban thrust rhythm with aid of quality map deployment ( QFD ) 1.1 Aim: To make proficient research in order to go cognizant of current developments in the market ; To fix a specification for a low C vehicle ; To develop several constructs ; To choose one construct utilizing QFD ; To fix a Gantt chart for the construct development stage of the undertaking. 1.3 SPECIFICATIONS OF THE VEHICLE: Table 1.3.1 is the Final specification of the LCV. Further study will explicate how these specifications were finalised. Length 3650mm Width 1550mm Height 1450mm Wheelbase 2650mm Minimum land clearance 170mm Seating capacity 5 people Kerb weight 1200kg Max loaded weight 1550kg Battery Lithium ion, 1000 rhythms Rated power 80kW Maximum torsion 448Nm Scope 120 stat mis minimum under normal urban conditions Human body frame Aluminium honey comb1.0 Conceptual Approach:QFD for Electric Vehicle:Table 1.1.1 is the QFD of the whole vehicle. The relation between Controllable parametric quantities and Customers & A ; Stake holders demands has be rated consequently, where 9-strongest, 3-moderate, 1-weak, and 0-no relation. This gives an thought on which governable parametric quantity we will hold to work more. The parametric quantities Battery ( 342 ) , Energy Storage Capacity ( 268 ) , Drive Motor ( 231 ) , Wear Resistance ( 239 ) , Price ( 303 ) shows maximal absolute importance, hence, choice process will be carried on, while giving maximal precedence to these parametric quantities.1.2 Fish Bone:The Fish Bone diagram shows a mode in which over aims will be achieved.Gantt chart of Concept Phase:Practically talking, Concept stage may take 2 to 3 old ages to finish. Chart 1.2.1 is our basic Concept Phase Gantt Chart demoing how a construct of a undertaking is developed ; if we were suppose to make a existent paradigm.1.4 Gantt chart of the Group Time Plan:Chart 1.4.1 shows clip planning of the group to execute different undertakings by group members. Therefore, from the Gantt chart now we know that which undertakings are over lapping the other undertakings ( blue in coloring material ) , and which undertakings start at the terminal of peculiar undertakings ( ruddy in coloring material ) .2.0 Batteries:Batteries are one of the most of import things, when it comes to an electric vehicle, as they are merely beginning of energy. Hence, choice of proper batteries plays an of import function for the operation of all the systems in an electric vehicle. This subdivision will cover some thoughts, which were used for choice of our batteries.2.1 Selection Procedure:Basic thing to get down with was to look into the demands, harmonizing to the market needs. Table 2.1.1 shows demands of EV batteries depending on different features and parametric quantities, adopted by USABC ( United States Advanced Battery Consortium ) . Battery Requirements as per USABC: Table 2.1.1 ( Anderman, Fritz, & A ; MacArthur, 2000 ) In our instance we will be sing demands related to long term. Further choice process will be more or less based on these demands.2.2 Available Electric Vehicle Batteries:A. Nickel Metal Hydride:Nickel Metal Hydride batteries passed assorted bench trials and were best among other campaigners for electric vehicle batteries. They were about capable of giving a calendar life of about 10 old ages. But disadvantages of utilizing Nickel Metal Hydride was that they are holding really low specific energy 60 to 80Wh/kg and therefore a lower scope for the vehicle to run in individual charge. For acquiring higher driving range the size of the batteries will hold to be increased and finally the weight besides increases.B. Lithium ion:And where the Nickel Metal Hydride batteries were neglecting Lithium ion passed, hence they were with every good belongingss of Nickel Metal Hydride and some more advantages. Lithium ion became more suited option to be used for electric vehicle batteries and as they have specific energy runing up to 450Wh/kg and better specific power. Most of the present and approaching electric vehicles are utilizing Lithium ion engineering.C. Lithium Polymer:Lithium polymer shows the potency of being cheaper than Lithium ion and Nickel Metal Hydrides batteries as cost of active stuffs is low in its instance. Besides holding higher specific energy about 650Wh/kg. But, still the procedure of fabricating these batteries is really complicated along with high cost electrolyte. Besides the working temperatures of these batteries restrict them from being a better option ( Delucchi & A ; Lipman, 2001 ) . Hence, the most executable option is the Lithium ion ( Table 2.2.1 ) . Features Nickel Metal Hydride Lithium Ion Lithium Polymer Specific Energy ( Wh/kg ) 60 to 80 150 to 450 Up to 650 Specific Power ( W/kg ) 150 to 200 150 to 800 300 Cycles ( 100 % DoD to 80 % of initial capacity ) 600 600 to 1000 200 to 600 Nominal Capacity ( Ah ) 90 100 to 180 50 to 120 Table 2.2.1 Characteristics Table ( Anderman, Fritz, & A ; MacArthur, 2000 )2.3 Selected Lithium Ion:QFD chart for batteries:Chart 2.3.1 Battery QFDOur battery Requirements and QFD chart gives a clear thought that Lithium ion battery is better than Nickel metal Hydride and Lithium polymer. Besides, from the QFD chart it is really much clear that, Battery Size ( 291 ) , Product Life ( 156 ) , Price ( 116 ) , Durability ( 115 ) , and Charging Speed ( 105 ) , have maximum absolute importance and comparative importance. Hence, for make up one's minding the concluding specifications of the batteries these parametric quantities will be given more importance as compared to others.2.4 Trade Offs Among Different Lithium Ion Battery Technologies:Lithium ion itself has many different types of discrepancies or different battery engineerings in it, therefore, farther attack is working on more specific restraints of the batteries. Table 2.4.1 ( Dinger & A ; Martin, 2010 )Safety:Most of import factor for EV batteries is the safety. Chemical reactions taking topographic point inside the batteries, while they are working or because of soaking consequences in high temperatures, which may ensue in fire. Table 2.4.1 shows, Lithium Nickel Cobalt Aluminium ( NCA ) has least safety features, whereas Lithium Nickel Manganese Cobalt ( NMC ) and Lithium Manganese Spinel ( LMO ) have moderate safety features and, Lithium Titanate ( LTO ) and Lithium Iron Phosphate ( LFP ) have highest safety characters.Life Span:Life span can be considered in two ways one figure of times batteries being to the full charged and dispatch boulder clay it is degraded to 80 % of its to the full charged original capacity and 2nd figure of old ages battery can be used.Performance:Performance in instance of battery is fundamentally how good the battery will execute in different climatic conditions.Specific Energy:Specific Energy is capacity for hi ve awaying energy per kg of weight. Gasoline has about 100 times more than that of the batteries. Hence, specific energy can besides be make up one's minding factor for size and weight of the batteries. Higher specific energy can ensue in low weight and smaller size of the batteries.Specific Power:Specific Power is the sum of power delivered per kg of mass. Specific is less of import as compared to specific energy in electric vehicles.Cost:As for now, the Li ion battery packs has cost estimations is between ?700 to ?850 per KWh, but with addition in technological development and competition among different makers, the fabrication costs of the batteries may diminish. The mark shown by USABC is ?250 per KWh by 2020, but someway Nissan is already claiming of supplying battery battalions at same figures with Nissan Leaf. So cost factor is likely to toss off really shortly.Which is better?LTO and LFP do hold really less safety jobs, but when it comes to specific energy they fall behind. And NCA is cost effectual, with higher specific energy, specific power and life span, but lags really much behind in safety. LMO has all the factors average every bit compared to others and short life span. Therefore, sing the demands ( Table 2.1.1 ) , Characteristics Table ( Table 2.2.1 ) , QFD ( chart 2.3.1 ) and all the factors, NMC is the most suited Lithium ion battery engineering. They have moderate safety characteristics, but this can be overcome by utilizing proper battery shell, chilling system and temperature monitoring devices, in sensible cost scope ( Anderman, Fritz, & A ; MacArthur, 2000 ) ( Dinger & A ; Martin, 2010 ) ( Delucchi & A ; Lipman, 2001 ) .2.5 Battery Manufacturers:Before specifying our concluding battery specifications looking for Battery makers and battery constellations these makers have, is a good thought. Industries have their ain R & A ; D sectors, and they welcome the demands of the client. Below are some makers who can supply us with Lithium-ion bat teries for our Electric Vehicle.China:J & A ; A EEMB LT EnergyJapan:Automotive Energy Supply Corporation GS Yuasa Corporation ( Momentum Technologies LLC, 1995-2010 )2.6 Battery Specifications:Our choice process therefore, leads us to battery specifications which will carry through our demands. Table 2.6.1 shows our approximative battery specifications. This may alter in footings of size, weight and cost, or even chemical belongingss depending on the makers. Specific Energy 200Wh/kg Specific Power 550Wh/kg Cycles 1000 Rated Capacity 100-180 Ah Nominal Voltage 3.7 V Charging Time 3 to 6 hours and 30 mins for rapid bear downing Weight 90x67x220 ( millimeter ) Dimension 150kg approx Cost 250 to ?300 per kWh / ?7500 to ?9000 per battery battalion2.7 High Voltage Electrical Distribution System:Electrical Loads in an car can split into two classs – propulsion and non-propulsion. Propulsion burden chiefly consists of motor and/or generator and Non-propulsion tonss include warmers, lamps, power Windowss etc. Maximal power is required for the propulsion loads which can be up to 100KW. Table 2.7.1 gives an approximative thought for power distribution in our instance.ComponentsPower Input ( kilowatt )Electric Motor 80 HVAC 8 Non-propulsion tonss 3 Entire 91 Table 2.7.1 ( Automotive Handbook, 2007 ) The electric vehicle has power coachs at different electromotive forces runing from lower to higher values and can be every bit high as 300 Vs. Hence, proper power direction and distribution system will be adopted in order to run into the demands of our vehicle constituents ( Fig 2.7.2 ) . Generic Automotive Power/Energy Management and Distribution system ( Shen, Masrur, Garg, & A ; Monroe, 2003 )3.0 MOTORS AND POWER ELECTRONICS3.1 Working rule of motors ( Leitman & A ; Brant, 2009 ) : When electric potency is applied, the twists generate the magnetic Fieldss which cause the armature to revolve and thereby, generate power. The efficiency of the electric motor ranges from 85 to 98 % .3.2 Present twenty-four hours EV ‘s:Electron volt Type OF MOTOR RATED POWER RATED TORQUE Nissan foliage AC lasting magnet synchronal motor 80 kilowatt 280Nm Mitsubishi iMiev AC lasting magnet synchronal motor 47kW 180Nm Subaru Stella AC lasting magnet synchronal motor 47kW 185Nm Thinkcity 3-phase asynchronous 34kW 140Nm 3.3 Propulsion system design ( Larminie & A ; John, 2003 ) : Constraints Variables Maximum speed Rolling opposition Maximal per centum class Aerodynamic drag co-efficient Initial acceleration Wheel radius Rated speed on a given incline Vehicle mass Maximum gradability Percentage class3.4 Advantages of electric motors over IC engines:Full torsion at low velocities Instantaneous power evaluation is about 2 to 3 times the rated power of motor Excellent acceleration with a nominally rated motor 3.5 Types of motors ( Larminie & A ; John, 2003 ) : Motors are fundamentally categorized into DC motors and AC motors.3.51 DC motors:Extensively used boulder clay 1990 ‘s Has 2 sets of windings- stator and rotor The torsion is maintained by commutator coppices Weaving in the rotor is called armature and twist in stator is called field twistAdvantages:Ease of control due to one-dimensionality Capability for independent torsion and flux control Established fabrication engineeringDisadvantages:Brush wear that leads to high care Low upper limits velocity EMI due to commutator action Low power to burden ratio Low efficiency Larger size3.52 AC motors:Armature circuit is on stator which eliminates the demand for commutator and coppices Types: Synchronous – lasting magnet type, electromagnet type Asynchronous – squirrel coop, lesion rotor. 3.53 Permanent magnet type AC motors ( Hussain, 2003 ) : They use magnets to bring forth air-gap magnetic flux alternatively of field spirals. Types: Permanent magnet synchronal motors Sinusoidal brushless DC motor Trapezoidal or square moving ridge motor Advantages: Supply a loss-free excitement in a compact manner without complications of connexions to the external stationary electric circuits High power to burden ratio High torsion to inertia ratio Excellent field weakening features Disadvantages: Not economical Sensitive to temperature and lade fluctuations3.54 Switched reluctance motors:Doubly salient, singly aroused reluctance motor with independent stage twists on the stator. Generally stator and rotor are magnetic steel laminations with rotor holding no magnets or twists. Advantages: Simple and low cost machine building Wider changeless power part Bidirectional currents are non necessary, therefore lesser figure of power switches Most of the losingss appear in stator, which is easier to chill High torsion to inertia ratio Torque-speed features of the motor can be tailored as per demand Maximum allowable rotor temperature is high Disadvantages: Torque rippling and accoustic noise observed Particular convertor and higher terminal connexions required, therefore non economical. 3.55 Choice: Torsion to inertia ratio Power to burden ratio Field weakening Torque rippling Acoustic noise Peak torsion efficiency Monetary value and care cost I? motor definition standard DC motors 6 3 3 6 3 6 3 9 39 PM Synchronous motors 9 9 9 9 6 9 Hence it is better to integrate PM synchronal motor or Switched reluctance motor in the electric auto. After mentioning the above chart, its apparent that PM synchronal AC motors are more suited for moderate power demands. 3.6 Power electronics in electric auto ( Hussain, 2003 ) : Electric motor thrust converts stiff DC battery electromotive force to DC/ AC electromotive force with a RMS value and frequence that can be adjusted harmonizing to the control bid. Electric motor thrust: Its typically is a combination of, POWER ELECTRONIC CONVERTER + ASSOCIATED CONTROLLER Power electronic accountant: It is made up of solid province devices and grips flow of bulk power from the beginning to motor input terminuss. It functions as ON/OFF switch to change over fixed supply electromotive force into variable electromotive force and variable frequence supply. They constitute of high-power and rapid response semiconducting material devices. Drive accountant: It accepts bid and feedback signals, processes it and generates gate exchanging signals for the power devices of the convertor. It is made up of microprocessors and digital signal processors. Figure: Block diagram of motor thrust ( Hussain, 2003 ) Figure: DC-DC and DC-AC convertors ( Hussain, 2003 ) 3.61 Power electronic switches ( Hussain, 2003 ) : BJT: Bi-polar junction transistors have better power evaluations and first-class conduction, but their thrust circuit is complicated as they are current-driven. MOSFET: Metal oxide semiconducting material field consequence transistor has simpler drive circuits and higher shift frequence, but their upper limit available power evaluations are lesser than BJT. IGBT: Insulated gate bipolar transistor incorporates the advantaged of both BJT and MOSFET and are extensively used in modern twenty-four hours electric autos. SCR: Silicon controlled thyristor have higher power evaluations but requires a commuting circuit to exchange them Off. GTO: Gate turn-off SCR is a type of jury-rigged SCR that can be switched off through a gate signal but their current ingestion is typically 4 to 5 times the current required to exchange them on. MCT: MOS controlled thyristor combines the conductivity features of SCR and gating features of MOSFET. Diodes: They are two-terminal semiconducting material devices and are used in concurrence with other accountant devices. Their map is to barricade the contrary electromotive force flow and supply current way for inductive circuits. 3.7 A typical PM synchronal motor thrust construction: ( Hussain, 2003 )LIGHT WEIGHT STRUCTURES4.1 INTRODUCTION TO STEELSSheet steel has remained the chief stuff used for the building of the organic structure of a motor vehicle of all time since mass production began earlier this century. Steel is comparatively is inexpensive and can be economically formed to do parts with complicated forms and has a high grade of rigidness, higher clang impact opposition and high elastic modulus. In the recent yearss, aluminum metals have been extensively used for car constituents. The metal has aluminium as base metal with hints of Cr, Cu, Fe, Mg, manganese, Si, Ti and Zn added to it. The proportions are differed harmonizing to the demand of the terminal merchandise and these metals are about replacing the steels in car sector. The indispensable factors behind this development have been the demands to cut down fuel ingestion by cut downing the weight of auto and increased rider safety ( C.Dasarathy , 2010 ) .4.2 STEEL USED IN AUTOMOBILEA ­A ­A ­As sheet As forged subdivisions As wire merchandises Hot rolled sheet t=1.5-7.00mm for organic structure panels, closings, biw parts, sumps, fuel armored combat vehicles, fumes parts. Crank shafts, linking roads, axle parts, tie rods, valves. For tyre support, springs, etc For organic structure, under organic structure structural parts cold rolled -annealed -coated sheet=0.5-1.5mm4.3 ALUMINIUMAluminum is a metallic component, and its construction is similar to most other metals. It is ductile and malleable due to its polycrystalline construction. Aluminum is made of grains which interlock when the metal is cooled from molten. Each grain comprises of rows of atoms in ordered lattice agreement, giving each grain an isotropic construction. Although the different grains are slightly indiscriminately arranged with in grain boundaries organizing during the chilling procedure, the atoms within each crystal are usually aligned which makes the metal isotropic, like the single grains. ( Sam Davyson )4.4 ALLOYING ADDITIONS FOR AUTOMOBILESA little measure of other elements added to aluminium in order to modify its basic belongingss. They are chromium, Cu, Fe, Mg, manganese, Si, Ti and Zn. These elements can be grouped into those with high solid solubility and thos e with low solid solubility.4.5 PROPERTIES SPECIAL STEEL & A ; ALUMINIUM ALLOYSProperties Particular steel Aluminium metal Weight & A ; denseness Heavier in weight with denseness of 7.85gm/cu.cm Lighter in weight with denseness approx 1/3rdof that of steel. The denseness is about 2.72gm/cu.cm Elastic modulus & A ; flexing specific stiffness Elastic modulus of 210 Gpa longitudinal i.e. immature ‘s modulus which 3times more than that of aluminum. But flexing stiffness is more than aluminum which provide more advantage for utilizing in constructions like forepart clang tracks, b-pillars etc. Elastic modulus of 70 Gpa. It has got shock soaking up inclination so largely used in car bumpers. It is used as outer tegument surface in car it has greater specific bending stiffness for level merchandises. Thermal conduction Less thermic conductive than aluminum 3 times more thermic conductive than steel doing it a pick in heat exchange applications. Fatigue Fatigue public presentation of steel is more than twice that of aluminum. Steels such as DUAL PHASE 600 AND TRIP 600 have endurance bounds of 307 Mpa & A ; 336 Mpa severally. Structural aluminum class of 5XXX series does non make an endurance bound and go on degrading at higher rhythms. Aluminium grade 5052-0 ranges 124 Mpa at 500 million rhythms. Formability High formable scope than aluminum doing it suited for vehicles titling and overall fabrication hardiness. Formability is about 2/3rdof that of steel. Electrical conduction Nowhere near aluminium electrical music director in power transmittal. High electrical conduction for usage as lines, transformers, coach bars etc. Coefficient of reflection Lesser reflective than aluminum. Excellent reflector of radiant energy throughout full scope of wave lengths. Light reflecting capacity of over 80 % doing it suited for light fixtures. In roofing, it reflect high sum of Sun heat advancing cool inside ambiance in summer. Non-magnetism Steels in general are magnetic. Austenitic chromium steel steels are non magnetic with AISI 304LN, 316LN some steel classs possessing really low magnetic permeableness for usage in constructions near to sensitive electronic devices or medical equipment. It is extremely nonmagnetic and therefore happening extended usage for electrical shielding such as coach saloon, magnetic compass lodgings, computing machine phonograph record fabrication, parabolic aerial etc. High temperature opposition Steels like T-11, T-22, martens tic chromium steel and austenitic chromium steel steel like AISI 310 are extremely creep resistant with ability to defy distortion at high temperatures. Steels incorporating 8 % aluminum. Poor high temperature opposition Low temperature stamina Steels in general posses hapless low temperature stamina. Shows first-class stamina at low temperatures happening usage in infrigidation. Tensile strength Much higher than aluminum and its metals. Tensile strength of pure aluminum is really much lower but, the belongings can be improved by add-ons of Mn, Si, Cu & A ; Mg and through annealing aluminum metal has a tensile strength of 295 Mpa. Output strength Very much higher than aluminium metal The mechanical belongingss are improved by add-ons of Mn, Si, Cu, & A ; Mg and through annealing. Machinability Shows good machinability in high sulfur steels and lead bearing steels. Show first-class machinability Hardness Harder than aluminum denting inclination less than aluminum Lower hardness than steel. Muffling features Ability to rarefy air bone noise due to its immense mass over aluminum. Inability to rarefy air borne noise compared to steel Strain rate sensitiveness High strain rate sensitive exposing positive strain rate public presentation. Not strain rate medium and has hapless clang worthiness. Corrosion & A ; weather opposition Austenitic chromium steel steel like AISI 304 & A ; 316 shows first-class corrosion opposition. Shows good gal vanic, cavity and inter-granular corrosion opposition Good corrosion opposition and the rate of corrosion is 1/25thof high opposition steels. It is first-class conditions resistant. Non toxicity Austenitic chromium steel steels 300 series are known for their non -toxic nature. Tin home base steels are used for continuing nutrient, comestible oils etc. Highly non-toxic. Aluminium foil wrapping 500 foil of 0.007mm thickness is wholly impermeable. Aesthetic entreaty Excellent for austenitic chromium steel steels with low care costs. Attractive visual aspect with low care costs. Discoveries use in facing, hardware etc. Table 4.4.1 ( B.V.R Raja )4.6 CHASSISThere is batch of accomplishment and engineering behind the development and usage of honeycomb human body. The typical portion of aluminum tegument in honeycomb panel is good in certain countries. Honeycomb human body can take great important tonss on border. But this ca n't take much burden in 90 grades to that great extent. The design panel is immune to all conditions conditions although they are non designed to expose to atmosphere. The bonding between the honeycomb and the aluminum tegument is really strong to H2O resistant but the bonding is non H2O cogent evidence. So when planing the human body we must take effectual stairss to forestall to maintain route H2O and salts out off the panels and articulations to avoid corrosion and harm to human body. More proficient accomplishment is required while repairing the panels. To the specific demands, you needed to attach the panels without impacting their physical belongings. We ca n't concentrate o r sleep together the panels together for perfect bonding. ( Cliffbeer, 2007 )4.7 RACK AND PINION SYSTEMIn rack and pinion type, the cogwheel on the maneuvering column ‘s terminal is similar to the pinion cogwheel in the differential cut on an angle, and meshed with a steel saloon ( the rack ) toothed on one side. The rack is mounted parallel to the forepart axle and as the maneuvering wheel bends, it operates straight on the tie rods without the usage of a pitman arm, loafer or intermediate ( or relay ) rod. Adding a power aid to this type of guidance is rather simple. The power Piston is really portion of the rack, and the rack lodging Acts of the Apostless as the cylinder. The control valve is located in the pinion lodging. Rotation of the guidance shaft and pinion turns the valve to direct hydraulic force per unit area to either terminal of the rack Piston.4.8 MACPHERSON STRUT FRONT SUSPENSIONThe most widely used forepart suspension system in autos of European beginning.The system comprises of a strut-type spring and daze absorber jazz band, which pivots on a ball articulation on the individual, lower arm The prance itself is the supporting member in this assembly, with the spring and daze absorber simply executing their responsibility as oppose to really keeping the auto up.4.9 MULTI-LINK REAR SUSPENSIONThis is the latest embodiment of the dual wishing bone system. The basic rule of it is the same, but alternatively of solid upper and lower wishing bones, each ‘arm ‘ of the wishing bone is a separate point. These are joined at the top and underside of the spindle therefore organizing the wishing bone form. The super-weird thing about this is that as the spindle turns for maneuvering, it alters the geometry of the suspension by torquing all four suspension weaponries. ( Chris Longhurst, 1994-2004 )4.10 AERODYNAMICSAeromechanicss encompass all the air flows that base on balls over, around, and through a vehicle they can be subdivided in those impacting performance/ fuel ingestion, comfort, chilling, vehicle kineticss, directional stableness and perceptibility safety. ( Automotive Handbook, 2007 )4.11 PRODUCT SPECIFICATIONComponentMaterialHuman body Aluminum honeycomb Body Steel, Aluminium Exterior panels, Bumpers Aluminum, plastic Interior panels Plastic ( ABS, PVC ) Wheels Aluminum Front suspension MACPHERSON STRUT Rear suspension Multi-link5.0 Energy Recovery and SystemIn a Low Carbon Vehicle, the energy lost or used, if recovered, could do the system more efficient. In order to retrieve the energy, two types of system are applied. Solar Energy Panels Regenerative Braking System 5.1 Solar Energy Panels ( Darrell D. Ebbing, 2007 ) ( SPI, 2005-2010 ) ( Inventables, 2007 ) Solar energy is the largely available energy in the universe. Taking this into cognition, we introduce solar panels which convert solar energy into electric energy and are stored in the battery. There are two sort of solar panels used: – Transparent and flexible solar panels Plate type solar panels The Semi transparent and flexible solar panels will be placed on each Windowss of the vehicle. So that the both the side of solar panel can be utilised consequently and with the aid of the green house consequence, it helps in bear downing the battery from both the sides. The Plate type solar panels will be placed on the roof of the vehicle and for the use of maximal solar energy All the charges obtained from the solar panel will be stored in the battery utilizing a control unit. Power available 20W ( Plate type solar panels ) 10-14W ( Semi transparent and flexible solar panels ) Charging Time 6-8 hour ( 45 % – 60 % ) Nominal Voltage 12v ( approx. ) Maximal Power Voltage 17.5v ( approx. ) Maximal Power Current 1.1A ( approx. ) Open Circuit Voltage 21.0v ( approx. ) Short Circuit Current 1.3A ( approx. ) Cost 400 ( approx. ) Table 5.1.1 Specification of the solar panels used. ( navitron, 2004 ) 5.2 Regenerative Braking System ( Boxwell, 2010 ) ( Brain, 1998 ) Regenerative braking system is an alternate manner used to bring forth electrical energy from kinetic energy produced through braking. This energy is produced by the rearward rotary motion of the motor used in the vehicle. As vehicle go down the hill or into halting point by braking, the electronic circuit or accountant would do the motor rotate backward with the aid of the tyres and in this instance, the motor which rotates the wheel would move as a generator to bring forth the electricity. This charge produced will be stored in the battery utilizing a control unit. By this system, the energy lost would be recovered and stored, therefore increasing the efficiency of the vehicle ( Automotive constituents and parts, 2008 ) 6.0 Parasitic Losses ( Vehicle Technologies Program, 2009 ) Parasitic loss is chiefly known as the loss of the energy in the system. For electric autos, the parasitic loss is chiefly due to the air current opposition and retarding force, braking and turn overing opposition. It even includes the clash and wears in the vehicle, thermal ( heat ) loads, operation of subsidiary tonss ( air conditioning, warmers, infrigidation, etc. ) . ( Inventables, 2007 ) This parasitic loss can vastly impact the efficiency of the vehicle.Electrical ConsumerPower end productAverage power end productElectric motor Radio 80kW 20W 75kW 20W Side marker lamps Low beam ( lordotic beam ) License – home base lamp, tail lamps Indicator lamp, instruments Heated rear window Interior warming, fan Electrical radiator ventilator 8W 110W 30W 22W 200W 120W 120W 7W 90W 25W 20W 60W 50W 30W Windshield wiper Stop lamps Turn signal lamps Fog lamps Rear fog warning lamp 50W 42W 42W 110W 21W 10W 11W 5W 20W 2W Entire Installed electrical burden demands Average electrical burden demands 80,895W 75,350WTable 6.1 demoing the ingestion of constituents of an Electric vehicle( Automotive Handbook, 2007 ) Therefore the parasitic losingss occurred in the electrical constituents = 80,895-75,350=5,545W Hence there is an approximative parasitic loss of 5kW and more in this system.7.0 HVAC ( Heating, Ventilating and Air Conditioning )HVAC ( Heating, Ventilating and Air Conditioning ) is a engineering that deals with the indoor or automotive environment control with the rules of Thermodynamics, Fluid Mechanics and Heat transportation. Heating, Ventilating and Air Conditioning are closely interrelated in order to supply a thermic comfort in the indoors. Since it is used to command the quality of air it is besides referred to as Climate control. HVAC is non merely of import in the design of medium to big industrial and office edifices and in marine environments but besides in cars such as autos and trucks where safe andA healthyA conditions are regulated with temperature and humidness. Since, HVAC systems account for so much electric energy usage, the efficiency of the system has to be improved through proper design, installing and scheduled care. HAVAC Systems perform conditioning the air in the undermentioned ways Removing and adding heat. Adding and taking wet. Volume of air flow. Speed of air flow. Removing Impurities in air. Fig 7.1 Ventilation System. ( National Research Council Canada ) Aim Supplying an acceptable degree of tenancy comfort Care of good air quality Minimum energy demands Minimal cost Proper air flow, heating and chilling.7.1 HVAC TYPESThe move to battery powered electric autos poses several challenges when it comes to climate control inside the vehicle. The enormously inefficient internal burning engine ‘s coolant system can easy be tapped for cabin warming are now gone while powering a 3 – 5 kilowatts air conditioning compressor in an EV consumes merely 200 wh/mile atA main road velocities. There are different types of HVACs used in Electric Vehicles.THERMOELECTRIC DEVICES FOR AIR CONDITIONINGThe thermoelectric HVAC will be optimised to supply the occupant comfort while cut downing fuel ingestion and nursery gas emanations. To maximise energy efficiency, the thermoelectric HVAC system will utilize a distributed warming or chilling design that targets single residents and reduces temperature conditioning to unoccupied rider seating. Tetrafluoroethane ( R-134a ) refrigerant gas is the most common working fluid in vehicular air conditioners since 1995. R-134a has 1300 times greater nursery gas impact than CO2. Car air conditioners leak 10 to 70 g/year. Thermoelectric HVAC systems significantly cut down adult male ‘s part to greenhouse gases while bettering fuel economic system. 7-8 billion gallons/year of fuel usage for automotive A/C. Approximately 6 % of our national responsibility fuel usage ( ELECTRIC VEHICLE NEWS, 2009 ) .Climate CONTROLLED SEATS ( CCS )This HVAC engineering heats and cools environing constructions such as the star, Windowss, flooring, and place dorsums. These systems consume between 3.5-5 KW. To cut down this burden, heating or chilling can be plumbed straight into the seats. These seats are called Climate Controlled Seats ( CCS ) . Since the place has direct contact with the resident it has much higher thermic conduction compared to air which is a hapless music director. With direct contact chilling or heating burden per individual could be reduced to less than 700 Watts compared to 5,000 W to heat/cool the full cabin ( Fairbanks, THERMOELECTRIC DEVELOPMENTS FOR VEHICULAR APPLICATION, 2006 ) . Fig. 7.1.1 Climate Control Seats. ( Fairbanks, 2006 ) Fig 7.1.2 HVAC System in Electric Car. ( Electric VEHICLE NEWS, 2009 ) Advantage This program presents scenarios for increased usage of alternate fuels and vehicle engineering efficiency betterments in order to cut down power ingestion and nursery gas emanations. This system will show a lower limit of 33 % betterment in the energy consumed by a vehicle air conditioning system. ZT ( figure of virtue ) ~ 1 ; COP ~ 0.9-1.0 ; Distributed HVAC System ; P ~ 2 kilowatt ; Power Off Alternator Decreases ~ 0.8 mpg/vehicle ( 0.8/27.5 ~ 0.029 ) low Alternator Efficiency ZT ~ 2 ; COP ~ 2 ; Distributed HVAC System ; P ~ 1 KW ; Power Off Alternator Additions ~ 1.1 mpg/vehicle ( 1.1/27.5 ~ 0.04 ) Either ZT Case ; Power From Thermoelectric Generator Converting Engine Exhaust Heat to Electricity Additions ~ 3 mpg/vehicle ( 3/27.5 ~ 0.11 ) ( Fairbanks, THERMOELECTRIC DEVELOPMENTS FOR VEHICULAR APPLICATION, 2006 )PELTIER EFFECT THERMOELECTRICPeltier faculties can be used to bring forth electricity, to supply air conditioning or they can be used to supply warming. In fact, Peltier faculties make it possible to construct various warming and chilling devices for applications that require an energy efficiency solution. Peltier faculties are thermoelectric ( TE ) devices that can be used to supply chilling or to bring forth electricity, depending on the application. The faculties work harmonizing to the Peltier/Seebeck consequence, which provides chilling by go throughing a current across two dissimilar stuffs, that ‘s on opposite sides of the device. The current flow causes one side of the device to go hot and the other to go really cold. A Peltier air conditioning solution can be built by configuring the Peltier faculties to accept a current, which will chill one side of the faculty and heat the other. In this constellation, Peltier faculties are frequently referred to as TEC or thermoelectric ice chests. The hot side of the Peltier faculty will necessitate a heat sink and a chilling fan to forestall overheating. The cool side of the Peltier faculty can so supply chilling by doing the Ac fan to blow air across them. The same faculties can besides supply warming by altering the way of the current flow. This will do the hot side to go cold and the cold side to go hot, which makes Peltier faculties an all unit of ammunition warming and air conditioning solution ( Fairbanks, CAR and Vehicle Technologies Energy Efficiency and Renewable Energy US Department of Energy Washington, D.C ) .7.2 AUXILIARY POWER UNITAn Auxiliary Power Unit ( APU ) is used in the motor and electric vehicles in-order to supply energy for the vehicl e other than get downing up of engines. It is used for runing the power Windowss and Cabin light even before get downing up of engine. The traditional APU is powered by fuel, which is less efficient and causes more pollution than the emerging battery powered APU ‘s. Fuel cell APU is a typical type which uses fuel cell as a beginning of energy but involves no burning and so is clean and efficient.AUXILIARY POWER UNIT IN ELECTRIC VEHICLESA battery electric vehicle has a comparatively little fuel cell subsidiary power unit ( APU ) to reload the battery battalion during driving. The attractive force of this constellation is the usage of a comparatively little battery battalion ( to let 65 – 110 kilometer of ZEV scope ) while increasing vehicle scope and functionality to be tantamount to conventional vehicles ( 400 – 650km ) . Another cardinal attractive force is that a bulk of kilometer could be expeditiously refueled from the grid leting low or zero CO2 power bring forthing engineering to be deployed in private transit without the tremendous cost and inefficiency of the H2 substructure ( Zizelman, 2000 ) . FUNCTIONS OF APU APU in a auto is responsible for and provides power to the Cooling system Heating system Generator/alternator system Air conditioning compressor SOLID OXIDE FUEL CELL APU The combination of Solid Oxide Fuel Cell ( SOFC ) APU and advanced Lithium Ion battery systems appears to do the fuel cell scope extender EV an attractive system in footings of efficiency, weight and cost. The add-on of the APU on the vehicle enhances the value of the vehicle to the electric grid by leting the vehicle to run as a back-up generator for the edifice next to which it is parked. Delphi has been making R & A ; D on fuel reforming and fuel cells since 1990. The SOFC plan began in 1999 with a customer-linked plan to develop a 3-5 kilowatt APU merchandise for luxury rider autos running on gasolene. The SOFC APU is a practical first measure for debut of fuel cells in transit. But its linkage to luxury maps ( like electric air conditioning ) alternatively of propulsion and its usage of conventional fuels, alternatively of direct H2, may do it look like a cautious first measure. However a assortment of future integrating schemes for combined rhythm SOFC/ICE, SOFC intercrossed vehicles and the SOFC/Li-Ion scope extender EV offer a broad spectrum of future â€Å" green † applications. In add-on, SOFC is capable of firing H2 or other renewable fuels really expeditiously. The SOFC system will inherently hold highly low emanations. No NOx will be formed in the reforming procedure and the post-combustor will run at temperatures where no NOx and hydrocarbons are fo rmed. But, the SOFC was assumed to accomplish a 40 % efficiency degree for the coevals of electricity ( ( Delphi ) , 2002 ) .8.0 Final Selection & A ; Remarks8.1 DFMEA:Design Failure Mode Effect Analysis is a systematic analysis of possible failure manners aimed at forestalling those failures. It is an intended preventative action procedure carried out before implementing new or alterations in merchandises or procedures. Table 8.1.1 shows Design Failure Mode Effect Analysis of our construct.8.2 Risk Appraisal:Battery detonation during clang and acerb spillage Passengers and people in the locality 8 Fire asphyxiator in auto, insularity Remote dismay, acerb spillage solidifier Light weight construction. Aluminium metal organic structure riders 9 airbags Fibre reinforced parts, impact bars, propinquity detectors HVAC working fluid spillage riders 6 none Fluid flow & A ; circuit ledgeman Less noise during gesture Pedestrians and bicyclers 5 Horns Proximity detector Electric dazes due to short circuits riders 7 Circuit ledgeman Electric insularity, daze preventer faculties8.3 Work Packages:Batteries, High Voltage Electrical Distribution Systems Shaikh Jameer Drive Motors, Power Electronics Manjunath T. R Lightweight Structures, Vehicle Dynamics Balakrishna Auxiliary Power Units, HVAC and System Cooling, Aerodynamic Performance Jagathish Energy Recovery and Storage, Parasitic Losses Antony Sunny8.4 Undertaking Plan Cost Report:Overview of the undertaking program Cost study is shown in Table 8.41 Specification Cost Battery Motor Chassis & A ; Body Energy Recovery System HVAC and Auxiliary Power Unit Assorted 9500 5000 2500 2000 4000 5000 9000 4550 2000 1450 3450 4500 500 450 500 550 550 500 Analysis 1200 1000 200 Testing of Components 1500 1200 300 Manufacturing & A ; Assembly 2000 1500 500 Testing 1200 1000 200 Table 8.41 Cost Report ( Hamster Internet, Inc. , 2011 ) ( Resciniti, Peshkess, & A ; Leonard, 2003 ) ( Cost Variance Stoplights, 2010 )Chart 8.4.2 Pie Chart of Baseline Cost8.5 Deliverables:Deliverables are the study, informations or even merchandises which are to be delivered. This is divided in two parts Internal Deliverable and External Deliverables. Internal Deliverables are things which are to be delivered within the people working on the undertaking and external deliverables are those which the people working in the undertaking deliver to the higher governments or users i.e. outside of the undertaking working environment. Table 8.5.1 and Table 8.5.2 show Internal and External deliverables related to our undertaking. Internal Deliverables: Name Description Undertaking and Development Planning Detailss This includes Individual Section Time program, Group Time Plan, QFD of the Undertaking. Weekly Reports Status of the undertaking Selection study This includes describe how a peculiar constituent was selected and/or implemented Required Specifications of the vehicle This includes the concluding specificationsExternal Deliverables:Whole Project Report Report on in what manner the undertaking will be carried out. Cost Estimates Cost Report of the undertaking Undertaking Requirement Details Requirements inside informations includes Machinery and/or Labour, Space required Final Concept and/or Prototypes Working paradigm or Final construct Complete Study of the Project tells about the feasibleness of the undertaking, which are strengths, Weaknesses, Opportunities and Threats. Table 8.6.1 gives usage inside informations on feasibleness of our construct.9.0 Decision:Use of choice tools like Quality Function Deployment ( QFD ) helped in the construct development, and be aftering stage, including Fish Bone diagram, Concept Phase Gantt chart, and Gantt chart of Group Time Plan helped us in acquiring the concluding specifications of the construct vehicle. And therefore, the construct of the vehicle is developed with C decrease engineerings such as lithium ion batteries, and energy recovery methods which use of solar energy and regenerative braking system. SWOT analysis shows the strength, failing, chances and menaces of the construct and hence, doing the range of research and development much broader. Therefore, we have a ne'er stoping concatenation of construct development and planning, to develop more economic and eco-frie ndly vehicles.

Case Study & Recommendations for a child with autism and the visual Research Paper

Case Study & Recommendations for a child with autism and the visual impairment exotropia - Research Paper Example It is not surprising therefore that he would always get up very early from bed and wait to hear her daughter from the storey, descending downstairs. Regardless of her condition which had made her mother very worried about life, Brenda seemed to herself as living a very normal life, which is filled with the things she loved to do most in the day. For example, pulling the piano bench away from the piano and sitting by the piano to have it played was one of the regular things she did every morning. Brenda could therefore be said to be a person who had a well regulated life that was almost constantly made up of the same processes, as Persico and Bourgeron (2012) noted to be very usual of children with autism. Brenda’s mother’s attitude might have impacted on Brenda in some way as she would always sit by the white grand piano with her face frowned. This was exactly what her mother did most of the time, out of frustration. Brenda was a very sensitive person, who would get attracted and distracted by the slightly noise that passed by her. For example, even sounds of cracks could arrest her attention. Perhaps such lack of attention, coupled with Brenda’s inability to have clear vision due to the exotropia, which had made her eyes to be deviated outward (Chorn and Steiner, 2014) is what had made her mother made some very derogatory remarks of her life. She had even told her husband, â€Å"I can’t live like this much longer† (Oates, 1980). This is because in her opinion, all she had accomplished was nothing more than failure. But the big issue is whether Brenda was that worse to deserve that kind of remark from her own mother. Indeed, Brenda could play the piano like a 16 year old professional who had taken piano lessons for years. But she had no such training in music and was still only 6. Whenever she sat by the piano, she would only be seen running her fingers gently over the keybo ard

Colourimetric Assay for Paracetamol Essay Example | Topics and Well Written Essays - 1000 words

Colourimetric Assay for Paracetamol - Essay Example ble results. The chief advantage of colourimetric methods is that they provide a simple means for determining minute quantities of substances. The upper limit of colorimetric methods is in general the determination of constituents which are present in quantities of less than 1 or 2 per cent (J. W. Robinson). The principle behind any colourimetric technique for paracetamol analysis is that paracetamol undergoes oxidation-reduction reaction with an aqueous solution of iron(III) ion. In the reaction, iron(III) ions are being reduced to iron(II) ions. The iron(II) ions produced in the redox reaction is reacted with potassium hexacyanoferrate(III) solution forming prussian blue which is an intense blue colored complex. The concentration of the paracetamol in a given solution may be determined by measuring the color intensity of the Prussian blue solution. ... Upon measurement of the intensity in terms of absorbance, Beer’s law is used to calculate the concentration of the paracetamol in micrograms per milliliter. To permit selection of the most advantageous technique, effects of variables such as temperature, heating time, acidity and reagent concentration have been evaluated. Another simple, accurate and fast method of determination of paracetamol is based on the measurement of the intensity of the yellow color that will develop when the sample containing paracetamol is reacted with p-dimethylaminobenzaldehyde in 2 molar solution of hydrochloric acid after heating (Usifoh, et. al.). This yellow color is usually absorbed in the visible region where the wavelength is 450 nm. It is normally stable for several hours and its intensity is directly proportional to the concentration of the drug, that is, Beer’s law is obeyed. This colorimetric technique is mainly used for analysis where the paracetamol is contained in a particular raw material or in pharmaceutical dosage forms such as tablets and syrups. Finally, a fast, automated colorimetric method for the determination of samples containing paracetamol is the latter’s reaction with acidic hypochlorite followed by coupling with alkaline phenol which produces a blue indophenol dye, which is measured colourimetrically (J.W. Murfin). This method is generally used for tablets containing paracetamol and a granule formation containing paracetamol. MATERIALS AND METHOD A stock solution of paracetamol has been prepared for analysis. The stock solution is prepared by dissolving appropriate amount of 0.0023 mol/L paracetamol solution in 10 mL of NaCl solution and made

Problem Statement Assignment Example | Topics and Well Written Essays - 500 words

Problem Statement - Assignment Example Rewards technique improves performance of teachers through extrinsic and intrinsic aspects. Extrinsic rewards are given to individuals; for instance, bonuses, trophies, and compliments. Intrinsic rewards involve internal satisfaction; for instance, sense of accomplishment. Education instructors are also motivated through participation in the decision making process of elementary schools and other education institutions. Proper work-life balance is also instrumental in improving academic performance standards of teachers. Personal and family time should be adequately balanced with work efforts, so as to realize minimal conflict. Work-life programs involve; flextime, workplace wellness, telecommuting, and family support (Skemp, 2007). Elementary schools entail education institutions where children aged between five and eleven years, pursue education. In United States the elementary schools starts form grade kindergarten up to the second grade (K-2). At this education level, learning comprises both physical aspects and academic aspects. The elementary education sector in America experiences challenges like underperformance. This is due to inadequate efforts of education instructors at the level of education. Public education institutions are particularly affected by the underperformance issue. The key underperformance issues entails; low self confidence among the teaching staffs, low success expectations, inadequate interest in education matters at elementary level, achievement anxiety, and fear or fear which results in low work confidence. This specific research question illustrates focus and also the design of the research study. The question enables easy identification of the variables of the study; the dependent and the independent variables. The specific research question also identifies the national sector that will be covered during the study. According to the question, the main subject under discussion is the performance of elementary

United States Supreme Court Case Term Paper Example | Topics and Well Written Essays - 1750 words - 1

United States Supreme Court Case - Term Paper Example ht to bring claims against the private sector on the neglect of the Clean Air Act if the Environment Protection agency fails in its part in the regulation of the emission of the gases by the power plants1. Connecticut v. American Electric Power Company, Inc. case was since filed by 8 states in 2004. This involved the New York City and 3 private petitioner environmental organizations up against the activities of an assortment of electric service companies. It was asserted by 2 complainants public nuisance under the state common law and the federal law as claims and argued that the natural resources as well as the human health will continue to suffer under the adverse effects of global warming. The plaintiff sought for the courts to have a resolution that would have the companies their carbon dioxide emanations. It was argued by the plaintiff that the power companies infringed on the public rights through the violation of the national common law of interstate nuisance or the alternative state tort law2. The plaintiff sought a decree that would set emissions of carbon dioxide and other green house gases for each of the defendants at the initial cap to be reduced annually. The complainants were dismissed by the district court in New York which was presiding over the case on the view that the case raised political inquiries that were thought to be inappropriate for a judicial resolution. It was argued by the court that the issues on climate change that had been presented by the plaintiff would require a delicate balancing of the environment, foreign, economic policies and the interests of the national security. This, the court argued that would be better handled by the political branch of the government rather than the judicial3, arguing further that ruling on such a matter would be tantamount to the court abrogating the role of the Congress to set legislations and standards for hearing such a case. The Supreme Court in 2007 ruled over the Massachusetts v. EPA, 549

Performance Measurement and Management Assignment

Performance Measurement and Management - Assignment Example This is also ensures that transparency is achieved because stakeholders are informed on the choices the organization intends to take. In addition, it assists an organization to monitor its progress towards its set objectives and standards of performance (Lichiello and Turnock, 2010). In addition, Myer (2005) highlights that performance management is the coordination of activities, which ensures that organizational goals are effectively achieved. It is also the use of performance measures and standards by an organization to ensure that the desired results are met Lichiello and Turnluck, 2010). In performance management, an organization matches its resources, systems and workforce towards desired objectives. Employees, organizations departments and processes in the organization can be the basis of performance management (Lichiello and Turnock, 2010). Myer (2005) also highlights that the benefits of performance management include; reduced costs by decreasing the time of achieving goals and reducing project overruns, motivation of employees by using incentive plans for goals achieved, improved engagement and transparency, and lastly, improved control of organization activities through proper data relationships. This paper will highlight and describe in detail the va rious performance measures that can be used by Allulite Windows and Joinery in measuring performance, and it will emphasize on the balanced score card approach and why it is favorable for the company than any other methods. In general, the metrics of measuring performance in an organization can be broadly classified into financial and nonfinancial measures. Some of the financial measures include the Return on Investment (ROI), Residual income (RI) and discounted cash flow methods such as the NPV method. On the other hand, the nonfinancial performance measures include

How a Person Should Be Essay Example | Topics and Well Written Essays - 1250 words

How a Person Should Be - Essay Example The perception of our parents and often those of moral philosophers are shaped by the religion that they follow. Muslim parents would raise their parents in the Islamic way while Jewish parents would want their children to uphold the Jewish ideals. Even if people around us reject religion, they follow a certain moral philosopher or leader to define how a person should be raised.When I take into consideration all these views, I am often overwhelmed by these ideals. During my high school days, this overwhelming feeling often crowded out my thoughts. I was unable to decide who to follow. Incidentally both of my parents had different views about what kind of a person I should be. Since I loved my parents and other people around me who wanted to define the ideal for me, I was unable to decide how to become the ideal person for everyone. The question was how could I satisfy the ideal me for everyone around me?This question developed a rebellious streak in me and I believe this happens to m any people today. When this happens, children often begin to do completely the opposite of what is expected of them. If their parents want them to excel in studies, they go out of the way to flunk in their subjects. Though, my case never went this bad, I was able to reconcile the ideals of the different people surrounding me. I was able to do this because of one of my teachers who sat down with me and explained that every one of the people who have expectations with me wants me to be a better person. They love me and feel responsible for me. In such cases, the better person conforms to their own perception of the ideal person. When I was given this assignment, I recalled these incidences and felt that this assignment would help me understand this concept further. To further understand what people expect from other, I met with different kinds of people including my own parents to understand their ideals of what a person should be like. In this paper, I will present the main points of these differing people by discussing their own opinions and views. I will begin with my father. My father is a liberal person. He does not strongly believe in any religion. He would rather advocate the benefits of science and technology rather than religion. Therefore, it is not surprising that he wants me to excel in life and attain the most of life. He wants me to get the best education and get into the field of technology; since according to him, it is the most rewarding field nowadays. He has always indulged in my interests of computers and all other things technology related. He wants me to attend the best university. All of my life, my father expected me to excel in studies. He kept a check on my academic performance and was quick to reprimand in case I did not do so well. It was probably these high expectations from my father that forced me to rebel during my high school days. However, it was my mother, who prevented me from going over the edge. She became a source of strength for me. My mother, in all of this, loved me

Career Exploration Project Essay Example | Topics and Well Written Essays - 2000 words

Career Exploration Project - Essay Example In this light, the purpose of this report is to take up informational interview with two key employees of Hilton Group to explore the dynamics that are required for survival in hospitality sector. Mr. Walter Jones works as a supervisor for the hotel for three departments mainly front-desk manager, food and beverage and customer complaint and the Mr. Alex Jordan works in developing the customer relationships. This research is a primary one that will be further used for my own personal development in the professional environment. The interviews have occurred over telephone. I had to obtain the permission of the respondents before conducting the interview and this was done by e-mailing them in advance. The timing of the phone call was discussed over e-mails with the consent of the respondents. The findings from the interview are presented below. Mr. Walter Jones has worked with the Hilton Group for the past six years and he acts as a supervisor of three key areas namely front office, food and beverages delivery and resolution of customer complaints. Three most important skills have come up in the conversation with Mr. Walter Jones, namely, communication, problem solving and self-management skills. He explained that most importantly it is mandatory to manage one-self before managing others. He said that resolution of customer complaints requires having excellent communication skills. These finding is consistent with the findings of Mallinson and Weiler (2000 cited in Barron 78) who had also found that communication is most important requirement of supervisors. Problem-solving has also featured in their works. Mr. Whitman has also added that the organization has also been trying to improve its customer service experience for which it has encouraged every employee to take up computer learning skills. Mr. Whitman informed that he has recently learned internal computer software that makes his job easier. The

A CLC assignment Essay Example for Free

A CLC assignment Essay Your CLC group will interview four different people about the ethical dilemma selected for Part 1 of this assignment. After sharing the interview results, the group will make a written recommendation. For complete directions for this assignment, refer to Collaborative Learning Community: Analysis of an Ethical Dilemma. Prepare this assignment according to the APA guidelines found in the APA Style Guide, located in the Student Success Center. An abstract is not required. This assignment uses a grading rubric. Instructors will be using the rubric to grade the assignment; therefore, students should review the rubric prior to beginning the assignment to become familiar with the assignment criteria and expectations for successful completion of the assignment. You are required to submit this assignment to Turnitin. Refer to the directions in the Student Success Center. Only Word documents can be submitted to Turnitin. Collaborative Learning Community: Analysis of an Ethical Dilemma Collaborative Learning Community: Analysis of an Ethical Dilemma (Part 1) In your CLC group, select one of the following three options and view the video related to your chosen topic (a description of each is provided along with a link to access the electronic media): Dilemma 1: Embryo Harvesting and Freezing/Genetic Manipulation (Posthumous Conception Case) Ethical issues related to case: http://www.youtube.com/watch?v=EIenB7qgIVk Washington Post article of Karen Capato Case: http://articles.washingtonpost.com/2012-03-19/politics/35450022_1_karen-capato-robert-capato-survivor-benefitsUS Supreme Court (2011) Ruling on Capato Case: http://www.supremecourt.gov/opinions/11pdf/11-159.pdf Description: Eighteen months after her husband, Robert Capato, died of cancer, re ¬spondent Karen Capato gave birth to twins conceived through in-vitro fertilization using her husband’s frozen sperm. Should technology be used to create live posthumously? Dilemma 2: Marketing of Medical / Pharmaceutical Products http://planetgreen.discovery.com/videos/30-days-anti-aging.html. While medical treatments and pharmaceuticals are common approaches to address a wide variety of conditions, there is growing concern from consumer groups and the medical community regarding current marketing practices which result in overconsumption or no medical benefit. The medical industry however, argues that these technologies are revolutionary in relieving suffering. Consider the ethical dilemmas of this case. What are the possible ethical dilemmas and implications? Dilemma 3: Voluntary/Assisted Euthanasia Dax Case 1 http://www.youtube.com/watch?v=IsxaaMbZMtAfeature=related The Terry Schiavo Documentary http://www.youtube.com/watch?v=cki55BM42kw 1)The quality of life for two individuals has been dramatically affected following traumatic events. What are the ethical implications in the scenarios? What response should be given to the patient and family in response to their requests for assisted euthanasia? Write a formal paper of 750-1,000 words identifying important components of the topic. Include the following: a)A description of the topic and related ethical implications: i)Obligations to your profession and work as a nurse. ii)Laws regarding this topic. iii)Stake holders in this scenario. b)A summary of the impact on social values, morals, norms, and nursing practice. c)An explanation of how an ethical theory and/or ethical principle might be applied to address the chosen topic. 2)Prepare this assignment according to the APA guidelines found in the APA Style Guide, located in the Student Success Center. An abstract is not required. 3)Submit the assignment to the instructor by the end of Module 4. Collaborative Learning Community: Analysis of an Ethical Dilemma (Part 2) 1)In your CLC group, interview a hospital administrator, a spiritual  leader, a health care colleague, and a neighbor/friend. (A total of four different individuals must be interviewed by the group in-person or by telephone). a)Ask all individuals interviewed to share their philosophy and worldview in relation to the ethical dilemma your group identified for Part 1 of this CLC assignment. b)Summarize the responses of each of the four individuals interviewed. c)As a group, consider the responses of the individuals interviewed and assess their similarities/differences. 2)Compose a written recommendation (750-1,000 words), incorporating the research your group has done as well as the four interview results to come to a resolution to the ethical dilemma. Be sure to clearly articulate your group’s position and the rationale for your position. 3)Prepare this assignment according to the APA guidelines found in the APA Style Guide, located in the Student Success Center. An abstract is not required. 4)Submit the four interview summaries and the group resolution to the instructor by the end of Module

Intake Manifold of the Internal Combustion Engine

Intake Manifold of the Internal Combustion Engine Abstract Intake manifold of the Internal Combustion engine is a subsystem which supplies fresh air-fuel mixture into the engine cylinders where combustion of fuel takes place. For Efficient Combustion of the charge, the walls of the intake manifold must be smooth/polished to reduce any sidewall resistance. The traditional materials used for intake manifolds were cast iron and Aluminum. In order to reduce manufacturing costs and improve thermal efficiency, new composites are proposed. Inside the cylinder, the energy generated from combustion of fuel is converted into pressure and heat during the power stroke. The pressure and heat increase rapidly within a short span of time. The piston converts this energy into mechanical work. In place of the traditional aluminum alloys, Al-SiC material is proposed which have superior properties. Exhaust manifold is responsible to remove the depleted charge and create space for the incoming charge. Materials used in exhaust systems of engines must have High Temperature Service capability, superior fatigue strength, and good fracture toughness, be easily machinable and economic considering the overall cost of the automobile. Mo-Nb added ferritic stainless steel is a new material that is gaining reputation for its high formability and high heat-resistance. Introduction Internal Combustion Engine is a complex machine that does mechanical work when the air-fuel mixture is ignited under high pressure. The Air-Fuel mixture is sent into the Combustion chamber through the intake manifold which is responsible to maintain proper supply of ignition charge into the engine always. The structure of the intake manifold must be such that it has low sidewall friction and maintains lower temperature so that the charge doesnt pre-ignite. The piston is the component that creates the necessary horsepower inside the engine. It must be light weight and must have good thermal properties. The exhaust manifold deals with the hot gases coming out the combustion chamber. It must be able to maintain flow of exhaust gases without any hindrance. Failure in the exhaust system can cause loss of back pressure which can significantly affect engine performance. Intake Manifold 1. Introduction Intake manifold in the car engine is the system which supplies fresh air into the engine cylinders where combustion of fuel happens. The Intake Manifolds in Internal Combustion engines are one of the most engineered components. High precision is needed to efficiently send right amount of cold, high pressure air in equal quantities and at the same pressure. Earlier generations of cars had intake manifolds made from cast iron, which were heavy. In high volume production cars, the use of injection molded composite intake manifolds has been increasing rapidly. [1] AE 587 Final Research Report Winter 2017 Material Selection for Intake Manifold, Piston Exhaust Manifold Tarun Krishna Prabhakar, Rohit Vedachalam, Pranav Radhakrishna Figure 1: Intake manifold made from Nylon 6,6 [23] An intake manifold is an integrated unit of any engine, made up of a series of tubes/ducts which distribute fuel-air mixture to each cylinder. For V-shaped engine blocks, intake manifold is integrated between the two cylinder rows whereas inline engines have manifolds to side of cylinder head. Intake manifolds also perform as mounting points for Fuel injectors/carburetors, thermostats, throttle assembly depending on the manufacturers engineering designs. Because of the location and functions, intake manifold assemblies experience constant stress from the engine vacuum pressure as direct heat from cylinder combustion gases, and the cylinder head. Figure 2: Evolution of Intake Manifold over the years[24] Until 1990s, most automotive intake manifold assemblies were made from Cast Iron because of lower cost, or from Aluminum which has lighter weight is required for performance/efficiency. Intake manifolds made from plastic began to gain popularity during 1990s because they offered lower weight and cost combined. They were Factory installed when auto-manufacturers figured out how to manufacture them so that they are durable enough to survive high stresses. [2] Aluminum is robust metal, but it has few drawbacks. Namely, 1.) It is cheaper to manufacture intake manifolds with advanced composite molding plants than cast out of Aluminum.2.) Composites have superior heat retention and heat resistance compared to Aluminum and other metals. This means that Phenolic spacers used in previous aluminum intakes are no longer required.3.) Smoother airflow with lower sidewall resistance compared to Aluminum casting, which requires high level of polishing to achieve same flow of air. However, there are few disadvantages:1.) Composites are more flexible, more prone to damage.2.) Composites or plastics are cheap and deemed unattractive. Dissimilar materials such as plastic, aluminum, and iron all have different expansion and contraction rates as they change temperature, so gaskets that provide a seal between an intake manifold and a metal cylinder head must be flexible and durable enough to withstand serious pulling and twisting forces. Early ones were not, and leaks resulted along with warpage under intense heat that eventually led to cracks. Therefore, composites offer several advantages. they saves money, reduces weight, ease of assembly, better insulation, improved airflow, excellent strength to weight ratio, and is recyclable. 1.2. Material Comparison [3] Properties comparison for PA6 (dry/humid), AL 6082 T6 and 316 stainless respectively: Yield strength (MPa): 80/45, 260, 290Elongation at failure (%): 70/200, 8, 50Ultimate Tensile Strength (MPa): 85/48, 310, 579Charpy impact toughness (J/square cm): 0.7/8, 10.6, 134 1.3. Existing Material and Process Material: 319F Aluminum Cast Component: Aluminum Intake Manifold Process: Semi Permanent Mold Casting For a Manifold of an opposed cylinder layout, Intake Manifold alone weighs 4.5 kgs and with the Phenolic spacers it weighs 8.2 kgs. The casting is done by Gravity Tilt Pour process, which can achieve minute thickness upto 3mm. [4] 319F Aluminum is an alloy comprised of 6% Silicon and 3.5% Copper and Iron ( Table 1: Properties of 319F Aluminum [26] For Aluminum, permanent mold process can be utilized to have sand cores to create complex castings. Die castings cannot use cores made of sand. If cores are used in the permanent molding process, it is sometimes as called semi-permanent molding as the mold is permanent but new cores must be made for the next batch. Permanent mold casting is one of the low-cost method of producing any Aluminum casting. Generally, Permanent mold castings are better than simple sand castings when the factors like ultimate and yield strength are compared. They have better elongation, which is good for ductility. Even appearance of Aluminum in permanent mold castings is better than appearance of castings made from sand casting process, which translates that lesser machining and polishing is required after casting. The cast is made using a single core. The passageway core is made by coldbox process for making cores, main body core is a blown core type and the external core is made using semi-permanent mold process with three solid cores and one internal passageway core. Below is a picture of the finished Aluminum Air Intake Figure 3: Aluminum Air Intake [25] 1.4. Proposed Material and Manufacturing Process Material: A-6135 HN PPA(PolyPhthalAmide) Cast Component: Composite Intake Manifold Process: Thermoforming Nowadays, Original Equipment Manufacturers (OEMs) use PA6 or PA66 is used for intake manifolds. In the performance aftermarket, there is possible use of engine performance enhancers like nitrous oxide or turbocharging or supercharging, so perhaps a higher-grade composite would be more appropriate. A-6135 HN polyphthalamide (PPA) is a 35% glass reinforced resin which is heat stabilized. Main properties of this resin are high strength, high stiffness, and high heat resistance over a broad temperature range. It also exhibits low moisture absorption, good against chemical action and electrical properties. AMODEL A-6135 HSL polyphthalamide acts as a solution to both performance and processing requirements. At elevated temperature and humid conditions, the tensile strength of A-6135 resin is 20% stronger than nylon 6, and much stronger than nylon 66. The flexural modulus of this compound is a minimum of 20% greater than stiffness of nylon 6 or 66. [6] Figure 4: Tensile strength and Flexural strength comparison between composites [26] For current generation vehicles, plastic intake manifolds are made using the injection molding process. Thermoforming is explored as an alternative to injection molding for making intake manifold shells, which can then be joined by one of the welding techniques used for thermoplastic materials. There is now an increasing trend in integrating several components, such as fuel injection, in engine air/fuel modules. The assembly of these components is achieved via either snap fits or threaded fasteners. Increased integration is generally associated with increasing shape complexity. The advantages of shell design in the integration approach are lower number of fasteners required. Figure 5: Thermoformed Shell type vs Lost Core Design [27] 1.5. Thermoforming Figure 6: Shows thermoforming principle [28] It is a manufacturing process in which a plastic sheet is heated to a temperature where it melts and is flowable, to make molding into any predefined shape/pattern and the flash is trimmed to get the final product. Thinner gauges and other materials too are heated in an oven to high temperature which allows the film to stretch or mold and cooled to a final shape. In Thermoforming, Vacuum forming is the simplest method. [8] Press forming is another type of thermoforming process which is used in work like the sheet metal stamping. Matching metal die set is used here. Preheated plastic sheet is placed on the bottom die and the top die is lowered to close the mold. The hot Plastic sheet gets stretched as the mold closes and then drawn into the shape of die. The sheet is allowed to cool down to take its final shape. For Complex geometries, the component is divided into 2-3 layers where the molded parts can be assembled and held together by means of fasteners or adhesives. Figure 7: Dies used for Manufacturing Shell type Molding of Intake manifolds [29] Figure 8: Finished Air intake manifold made of PPA [30] Figure 9: Comparison of PPA and Aluminum intake manifolds [31] Automotive Pistons 2.1. Introduction In the cylinder of an engine, the energy of the fuel is converted into pressure and heat during the power stroke. The pressure and heat values increase rapidly within a short interval of time. The piston converts the same into mechanical work [9]. The pistons structure consists of piston crown, ring belt, skirt and piston boss as shown in Figure1.1. During the power stroke, the forces resulting from the combustion of fuel-air mixture are transferred from the piston crown to piston boss, piston pin, connecting rod and finally to the crankshaft [9]. Figure 10: Engine piston [9]. 2.2. Forces on piston The forces acting on the piston are, oscillating inertia forces of the piston and the connecting rod (FK), piston force in the direction of the connecting rod (FST) and lateral force or normal force (FS). During the working cycle, the direction of lateral force changes several times, which oscillates the piston from one end of the cylinder bore to the other, due to the existing piston clearance [9]. Figure 11: Forces on the piston [9]. 2.3. Temperatures in piston Temperature is an important parameter for the operational safety and service life of a piston. The exhaust gas temperatures, even though is present only for a short period, can exceed more than 2,200ÂÂ °C. In gasoline engines, the exhaust gas temperatures range between 800ÂÂ °C to 1,050ÂÂ °C, and 600ÂÂ °C to 850ÂÂ °C for diesel engines [9]. Figure 12:ÂÂ   Temperature distribution in a gasoline engine piston [9]. Figure 13:ÂÂ   Temperature distribution in a diesel engine piston [9]. 2.4. Failures of internal combustion engine pistons Failure of piston is one of the prime reasons for engine breakdown. The failure may occur at different mileage and operating conditions which are usually caused by material defects, engineering, and operational errors. Common causes of piston failures include: 1) insufficient cooling and lubrication of the piston, 2) thermal fatigue, 3) incorrect combustion process, 4) mechanical damage [10]. Figure 14 shows fusion of piston head and ring area in a gasoline engine. It is caused due to a phenomenon called hot bulb ignition occurring on the pistons, primarily on their heads, and in the larger flame extinguishing areas. The hot-bulb ignition occurs in the areas of combustion chamber, which have temperatures higher than the autoignition temperature of the air-fuel mixture. This causes the temperature of the piston head rapidly increase, soften, melt and fuse with the ring [10]. Fig. 14: Fusion of the piston head and the ring area [10]. Figure 15 illustrates a piston skirt seizure. From the figure, it is evident that piston skirt has completely seized. The dark coloring on the surface is due to rough and heavily over- ground abrasion spots. Causes for the failure include: 1) Overheating of the combustion chamber, 2) Poor lubrication, 3) Incorrect combustion process [10]. Fig. 15: Piston skirt seizure [10] Figure 15 illustrates propagation of fatigue crack of the piston pin along the semicircle. This fracture divides the piston head into two parts -as shown in Fig. 5. These are cracks due to excessive loads on the piston pin. The crack grows rapidly with poor lubrication and will ultimately result in the failure of the piston. Causes for the failure include: 1) Incorrect combustion process, mainly by delayed ignition, 2) incorrect starting of the cold engine, 3) hydraulic lock caused by water present in the fuel [10]. Fig: 16:ÂÂ   Crack in piston head and skirt [10]. 2.5. Materials Pistons are usually made of Aluminum and Aluminum alloys of eutectic, and partly hypereutectic composition which have high wear resistance. The most commonly used eutectic alloy is M124. Alloys such as M138 and M244 were used in two-stroke engine pistons, while M126 alloy was preferred in gasoline engines. The other recently developed alloys include M142, M145, and M174+, common composition of these alloys include elements of copper and nickel which provides high strength at elevated temperatures and thermal stability. The eutectic alloy M142 and M145 are used in gasoline engines, and the alloy M174+ in diesel engines. Aluminum Metal matrix composites are a new class of materials used in pistons which have superior properties than Aluminum alloys. These composites consist of Aluminum as metal matrix and SiC, Al2O3, TiC, TiB2, Graphite and certain other ceramics as reinforcements [9]. Table 2: Chemical composition of MAHLE Aluminum piston alloys (percent by weight) [9]. Elements M124 M126 M138 M244 AlSi12CuMgNi AlSi16CuMgNi AlSi18CuMgNi AlSi25CuMgNi Si 11.0-13.0 14.8-18.0 17.0-19.0 23.0-26.0 Cu 0.8-1.5 0.8-1.5 0.8-1.5 0.8-1.5 Mg 0.8-1.3 0.8-1.3 0.8-1.3 0.8-1.3 Ni 0.8-1.3 0.8-1.3 0.8-1.3 0.8-1.3 Fe max. 0.7 max. 0.7 max. 0.7 max. 0.7 Mn max. 0.3 max. 0.3 max. 0.3 max. 0.3 Ti max. 0.2 max. 0.2 max. 0.2 max. 0.2 Zn max3 0.3 max3 0.3 max3 0.3 max3 0.3 Cr max. 0.05 max. 0.05 max. 0.05 max. 0.05 Al remainder remainder remainder remainder Table 3: Chemical composition of MAHLE Aluminum piston alloys (percent by weight) [9]. Elements M142 M145 M174+ AlSi12Cu3Ni2Mg AlSi15Cu3Ni2Mg AlSi12Cu4Ni2Mg Si 11.0-13.0 14.0-16.0 11.0-13.0 Cu 2.5-4.0 2.5-4.0 3.-5.0 Mg 0.5-1.2 0.5-1.2 0.5-1.2 Ni 1.75-3.0 1.75-3.0 1.0-3.0 Fe max. 07 max. 07 max. 07 Mn max. 0.3 max. 0.3 max. 0.3 Ti max. 0.2 max. 0.2 max. 0.2 Zn max. 0.3 max. 0.3 max. 0.3 Zr max. 0.2 max. 0.2 max. 0.2 V max. 0.18 max. 0.18 max. 0.18 Cr max. 0.05 max. 0.05 max. 0.05 Al remainder remainder remainder 2.6. Current manufacturing process 2.6.1. Permanent Mold Aluminum Pistons Permanent mold is one of the oldest and common process used for manufacturing pistons. It consists of steel mold with single or multi-piece inner cores to create various intricate features of the piston.ÂÂ   This process is a relatively cheap for high volume for a justifiable tooling cost. Parts can be made of various alloys with improved strength at elevated temperatures. High tooling cost and porosity are the main disadvantages of permanent mold process [11]. 2.6.2. Forged Aluminum Pistons Pistons are forged for obtaining high performance, large bore, and increased strength.ÂÂ   Heated solid cylindrical aluminum blank is pressed into a die to create piston. The process yields low defective rate, increased ductility, and fracture toughness [11]. 2.6.3. Billet machined pistons Billet machined pistons are machined from the same wrought aluminum materials which are used in piston forging.ÂÂ   Billet machined pistons have high surface finish and has no tooling cost. The main disadvantage of this process is high cost [11]. 2.7. Improved materials: Aluminum-Graphite composites were primarily used for automotive antifriction applications. Low cost, good machinability, improved damping capacity are the main advantages of this composite. Aluminum-Graphite composites can be fabricated from various casting processes such as permanent mold casting, squeeze casting, centrifugal casting, and pressure die casting. Pistons made of Aluminum-Graphite composites exhibit properties like, low wear, minimal frictional loss, and elimination of seizure from poor lubrication [12]. Aluminum-Silicon Carbide composites have excellent specific strength, specific modulus and wear resistance. The amount of SiC determines the effect of coefficient of thermal expansion, higher the SiC content, lower the coefficient of thermal expansion. Conventional casting processes such as sand casting, permanent mold casting, investment casting and squeeze casting are used in manufacturing these composites [12]. 2.8. Analysis of aluminum and Aluminum-Silicon-Carbide pistons Firstly, a CAD model of a piston is built in CATIA V6, and is structurally and thermally analyzed using ANSYS 14.0 software [13]. Figure 17: Modeling of Piston and complete assembly [13]. 2.8.1. Aluminum composition. Table 4: Show the chemical composition of aluminum [13]. Elements Composition Si 0.10 Fe 0.20 Zn 0.03 Ga 0.04 V 0.03 Others 0.10 Aluminum 99.5 2.8.2. Aluminum Material properties. Table 5: Shows the material properties of Aluminum [13] [14]. Youngs Modulus 70000 MPa Poissons ratio 0.35 Density 2.7e-006 kg mm-3 Thermal conductivity 0.237 W mm-1 C-1 Bulk Modulus 77778 MPa Shear Modulus 25926 MPa Coefficient of thermal expansion 2.48e-005C-1 2.8.3. Aluminum-Silicon-Carbide composition. Table 6: Show the chemical composition of the aluminum alloy (6063) [13]. Elements Composition Elements Composition Si 0.4430 Zn 0.0001 Fe 0.1638 Cr 0.0024 Cu 0.0041 Ti 0.0078 Mg 0.5832 Ca 0.0003 Mn 0.0132 Al 98.751 To obtain the composite silicon carbide powder (15% by weight) is added to the aluminum alloy (6063). For example, 150g of silicon carbide is added to every 1kg of aluminum alloy (6063) [13]. 2.8.4. Aluminum-Silicon-Carbide composite material properties: Table 7: Shows the material properties of Aluminum-Silicon-Carbide composite [13] [15]. Youngs Modulus 230Gpa Poissons ratio 0.24 Density 2.937e-006 kg mm^-3 Thermal conductivity 0.197 W mm^-1 C^-1 Bulk Modulus 1.4744e+005 MPa Shear Modulus 92742 MPa Coefficient of thermal expansion 0.7e-005C-1 Figure 18: Mesh Model of Piston [13]. 2.8.5. Thermal Analysis Thermal analysis is a technique which analyses the variation of physical properties of a substance as a function of temperature [13]. Figure 19: Thermal boundary conditions applied to piston [13]. Figure 20: Temperature Distribution in Aluminum piston [13]. Figure 21: Temperature Distribution in Aluminum-Silicon-Carbide piston [13]. Figure 22: Total Heat Flux in Aluminum piston [13]. Figure 23: Total Heat Flux in Aluminum-Silicon-Carbide piston [13]. 2.8.6. Static Structural Analysis A static structural analysis helps in determining displacements, stresses, strains, and forces in structures or components. The loads do not take inertia and damping effects in consideration. Assumption: Steady state loading conditions i.e., variation of loads and response of structure are varied slowly with respect to time [13]. Figure 24: Fixed Support Model of piston [13]. Fig 25: Total Deformation on Aluminum piston [13]. Figure 26: Total Deformation on Aluminum-Silicon-Carbide piston [13]. Figure 27: Equivalent Stress Distribution in Aluminum Piston [13]. Figure 28: Equivalent Stress Distribution In Aluminum-Silicon-Carbide Piston [13]. 2.9. COMPARISON: 2.9.1. Results of static structural analysis Table 8: Shows the Results of static structural analysis of two pistons [13]. Material Total Deformation Equivalent Stress Equivalent strain Al 0.19052 mm 683.22 MPa 0.00976 mm/mm AlSiC 0.060777 mm 703.54 MPa 0.0030589 mm/mm From the above table, Aluminum-Silicon-Carbide composite has lesser deformation, lesser equivalent strain [13]. However, the equivalent stress of the composite piston is higher than Aluminum piston and this can be reduced by redesigning the stress concentration areas of the piston 2.9.2. Results of thermal analysis Table 9: Shows the Results of thermal analysis of two pistons [13]. Material Temperature Total Heat Flux Al

The Byzantine Empire :: essays research papers

The Byzantine Empire   Ã‚  Ã‚  Ã‚  Ã‚  The Byzantine Empire, the survivor of the Roman empire, flourished into the oldest and longest lasting empire in our history. It began with Constantine the Great's triumph of Christianity. He then transferred his capital from Rome to the refounded Byzantium in the early 4th century, year 330 AD, and named it Constantinople after himself. This city became the surviving safe spot after the breakup of the Western Roman empire by the 5th century. It was by far the largest and richest city in Christendom during the Middle Ages with a population of about one million people. (Encarta)   Ã‚  Ã‚  Ã‚  Ã‚  Constantine the Great had established a criterion for the empire to follow throughout its history. It included the harmony of the church, the leaders and the teachers of the empire. Constantine created a successful new monetary system based on the gold solidus, or nomisma which lasted well into the middle of the 11th century. Because of the commercial thriving throughout the 4th, 5th, and 6th centuries, many ancient cities flourished. Large estates dominated agriculture which continued to be fruitful in spite of the heavy taxation causing an abandonment of land. From the beginning to the end of the Byzantine empire, the church and the emperor had been the largest landholders, therefore being the largest profiteers of Byzantine. (Encarta)   Ã‚  Ã‚  Ã‚  Ã‚  After the Roman empire fell in 476 AD, Byzantine conquered all. It took over the space of southeastern Europe, southwestern Asia, and the northeast corner of Africa. The present day countries in these areas include the Balkan Peninsula, Syria, Jordan, Israel, and Egypt. This large empire known as Byzantine didn't get called Byzantine until scholars named it. The people of that time were not thought of as Byzantines but as Romans who lived a Roman lifestyle. Byzantine had been started and ruled by an emperor without any formal constitution. It slowly formed a similar establishment of late Roman institutions. Byzantine followed the Romans orthodox Christianity as well. The predominant language of this era was Greek, although some subjects spoke Latin, The Byzantine Empire :: essays research papers The Byzantine Empire   Ã‚  Ã‚  Ã‚  Ã‚  The Byzantine Empire, the survivor of the Roman empire, flourished into the oldest and longest lasting empire in our history. It began with Constantine the Great's triumph of Christianity. He then transferred his capital from Rome to the refounded Byzantium in the early 4th century, year 330 AD, and named it Constantinople after himself. This city became the surviving safe spot after the breakup of the Western Roman empire by the 5th century. It was by far the largest and richest city in Christendom during the Middle Ages with a population of about one million people. (Encarta)   Ã‚  Ã‚  Ã‚  Ã‚  Constantine the Great had established a criterion for the empire to follow throughout its history. It included the harmony of the church, the leaders and the teachers of the empire. Constantine created a successful new monetary system based on the gold solidus, or nomisma which lasted well into the middle of the 11th century. Because of the commercial thriving throughout the 4th, 5th, and 6th centuries, many ancient cities flourished. Large estates dominated agriculture which continued to be fruitful in spite of the heavy taxation causing an abandonment of land. From the beginning to the end of the Byzantine empire, the church and the emperor had been the largest landholders, therefore being the largest profiteers of Byzantine. (Encarta)   Ã‚  Ã‚  Ã‚  Ã‚  After the Roman empire fell in 476 AD, Byzantine conquered all. It took over the space of southeastern Europe, southwestern Asia, and the northeast corner of Africa. The present day countries in these areas include the Balkan Peninsula, Syria, Jordan, Israel, and Egypt. This large empire known as Byzantine didn't get called Byzantine until scholars named it. The people of that time were not thought of as Byzantines but as Romans who lived a Roman lifestyle. Byzantine had been started and ruled by an emperor without any formal constitution. It slowly formed a similar establishment of late Roman institutions. Byzantine followed the Romans orthodox Christianity as well. The predominant language of this era was Greek, although some subjects spoke Latin,

things change Essay -- essays research papers

The book Things Fall Apart, by Chinua Achebe tells the story about a native living in Africa during the period of European imperialism. By placing the book during this time period Achebe can first explain traditional Ibo culture and then talk about the effect that the white European evangelists had on Ibo society. The book dispels the commonly held view of Africans before colonization as savage and godless beings. Achebe explains the very advanced social order in Umuofia and the complex Ibo religion. In bringing together what I have learned about Europe and Africa during the time of Imperialism I will draw a comparison between the two continents politically, religiously, and economically. Europe was ruled by a set of very powerful and competing monarchs during the time of imperialism. In these monarchies a king and queen had supreme power over their countries. In Umuofia there was a democratic system of government with no one ruler and a complex system by which people could gain political power through economic success. I think it is very ironic that when the white missionaries came they lectured the natives on how everyone was equal in the eyes of God, but yet they had supreme rulers in their own countries and a very unfair social caste system. Contrary to popular belief the Africans had a very complex religion before Christianity came. Everyone in the community was extremely religious, even obeying their religious leaders when they were told to kill their own children ...

Examining Financial Statements - Landrys Restaurants Essay -- Busines

Examining Financial Statements - Landry's Restaurants Financial statement users around the globe use financial statements to evaluate the performance of companies (Fundamentals of Financial Accounting, 2006). In order to locate a company’s reported assets, liabilities, expenses and revenues, statement users rely on four types of financial statements. The four financial statements include: Balance Sheet, Income Statement, Statement of Retained Earnings, and Statement of Cash Flows (Fundamentals of Financial Accounting, 2006, p. 6). Each of these reports provides different information to the financial statement user. The Balance Sheet reports at a point in time: a company’s assets (what it owns), liabilities (what it owes) and stockholder’s equity (what is left over for the owners) (Fundamentals of Financial Accounting, 2006, p.7). The Income Statement shows whether a business made a profit (net income) during a specific period of time (Fundamentals of Financial Accounting, 2006, p. 10). The Statement of Retained Ear nings illustrates what portions of the company’s earnings was paid to stockholders and retained by the company for future operations (Fundamentals of Financial Accounting, 2006, p.12). Finally, the Statement of Cash Flows reports summarizes how a business’ â€Å"operating, investing, and financial activities caused its cash balance to change over a particular range of time† (Fundamentals of Financial Accounting, 2006, p.13). This paper examines the Annual Report of Landry’s Restaurants, Inc. Specifically, this paper demonstrates how certain financial elements can be located in Landry’s financial statements. The key financial components discussed include: (1) net income, (2) total assets, (3) property and equipment a... ...ompany has made a profit over the prior year. Conclusion Financial statements play a significant role in providing insight into Landry’s Restaurants financial condition. Is the liability or cost high and can one see continued improvement in revenues each year are questions answered when analyzing financial statements. An investor can use financial statements in making a decision to invest in a company. By examining the different financial statements, one can identify Landry’s Restaurants has grown over the past five years. Comparing assets, liabilities and owner equity, one is able to determine Landry’s Restaurants is making a profit. Reference Landry's Restaurants (2003, December 31, 2003). Landry's Restaurants Annual Report. , 1. Fundamentals of Financial Accounting (1st ed.) F. Phillips, B. Libby, and P. Libby McGraw Hill, 2006. Boston, MA