The Application of Operant Conditioning Techniques in a Secondary Classroom free essay sample

The Application Of Operant Conditioning Techniques In A Secondary Classroom Background A plethora of Studies have reported the effectiveness of operant conditioning techniques in altering the behavior of children in a number of different situations. There has been many studies in which teacher-supplied consequences have had effects on preschool and elementary school children in a regular classroom, but almost none in the secondary schooling classrooms. The results of these studies were that in smaller classrooms, students’ behavior improved with consequences given by the teacher. McAllister, Stachowiak, Baer, and Conderman now take a look at the effects of these consequences on a larger scale. This study sought to take an entire class of secondary school students and apply teacher-supplied consequences for misbehavior to discover if the behavior of the students improved. Methods The subjects consisted of 51 students ranging in age from 16-19 years, who all had similar I. Q. s and economic backgrounds. We will write a custom essay sample on The Application of Operant Conditioning Techniques in a Secondary Classroom or any similar topic specifically for you Do Not WasteYour Time HIRE WRITER Only 13.90 / page The experimental group consisted of 25 students (12 boys and 13 girls), Where as the control group consisted of 26 students (13 boys and 13 girls). Also, The experimental class was 70 minutes long and the control class was 60 minutes long. The teacher was a 23-year-old female who held a bachelors degree in education. She had one year’s experience in teaching secondary level English. The basic design of the experiment was a pretest-posttest control group design combined with the use of a multiple baseline technique in the experimental class. The behaviors chosen to be targeted were Inappropriate talking and turning around due to the fact that these behaviors had a high rate of occurrence. Inappropriate talking was classified as any vocal behavior portrayed by a student without the teacher’s permission. Also, any vocal behavior required that the student raise his or her hand before speaking, unless engaged in a group discussion. Inappropriate turning around was classified as any turning-around behavior in which the student turned more than 90 degrees away from the front of the room. An exception to this was when a student was required to turn around to distribute papers to their classmates as directed by the teacher. The observations were recorded for the experimental class using a sequentially numbered, 70-box table for each behavior. The observations of the control class were recorded using a similar, 60-box table. If either of the target behaviors occurred during any minute interval of time, it was recorded by placing a check mark in the corresponding box for that interval. Any further occurrences of the target behavior during the same time interval were not recorded. Thus, each time interval represented whether or not the behavior had occurred during the time interval opposed to the number of occurrences. A daily quantified measurement of each behavior was obtained by dividing the number of checked time intervals by the total number of intervals in that class period, which gave us a percentage of intervals in which the behavior occurred at least once. The baseline condition lasted for 28 days in which the teacher was asked to behave in her usual manner. The Average reliability for talking behavior was 90. 49% in the experimental class, and 89. 49% in the control class. Average reliability for turning behavior was 94. 27% in the experimental class and 90. 98 in the control class. Also, two aspects of the teacher’s behavior were recorded. The average reliability for teacher reprimand behavior was 92. 78% in the experimental class and 94. 84% in the control class. Average reliability for teacher praise behavior was 98. 85% in the experimental class and 97. 65% in the control class. The first experimental condition began in the experimental class on the 28th day. The teacher was to attempt to disapprove of all instances of inappropriate talking behavior whenever they occurred in a direct and verbal manner. The teacher was also asked not to threaten students with or apply other consequences such as keeping them after class or sending them to the office. In addition to these guidelines, the teacher was also asked to praise the entire class with remarks like â€Å"thank you for being so cooperative today†. The second experimental condition took place after the first one had been in effect in the experimental class for 26 days and had markedly reduced talking behavior. In this condition, the contingent social consequences for talking behavior were continued as well as implementing the same system of consequences for turning behavior. Results Inappropriate talking behavior during the baseline condition in the experimental class and the control class yielded similar results (25. 3% in the experimental class, and 23. 81% in the control class). On day 28 when the first experimental condition was implemented, inappropriate talking behavior immediately reduced. This decrease continued as time went on and finally stabilized at a level below 5%. At the same time, the control class continued to portray its previous level of inappropriate talking behavior. Inappropriate turning behavior during the baseline condition in the experimental class and control class was slowly increasing (15. 13% in the experimental class, and 14. 45% in the control class). On day 54 when the second experimental condition was implemented, the inappropriate turning behavior also began to decrease. This behavior continued to decrease during the remaining days of the study. The number of times the teacher reprimanded students for inappropriate behavior during the baseline period were 25. 76% in the experimental class and 22. 23% in the control class. During the first experimental condition, the teacher disapproved an average of 93. 33% of inappropriate talking behavior. During the second experimental condition, the teacher disapproved an average of 95. 0 % of inappropriate turning behavior. Conclusions The results clearly portray that by the teacher’s actions of praise and disapproval, she was able to reduce the amount of inappropriate talking behavior as well as the amount of inappropriate turning behavior. In reprimanding the students in a more direct manner, using names and calling the students out for misbehaving, the teacher was able to make a deeper impact on the student for his or her actions. Also, in taking away consequences such as staying after class, the teacher removed fear from the tudents and instead implemented proper behavior. The teacher also used praise to decrease the amount of inappropriate behavior of her students. She would say things like â€Å"what a great class today† or â€Å"you guys were on your best behavior today† to make the students feel good about being on their best behavior.

Teen Alcoholism †Health Essay

Teen Alcoholism – Health Essay Free Online Research Papers It is shockingly to even think that a â€Å"normal† student who consumes alcohol takes approximately a week’s time to get his cells back to normal, so if a student drinks every weekend, this student would never be back to his senses. According to rates done recently â€Å"80% of high school seniors have had a drink in the last month . Over two million of those drank alcoholically.† (National Treatment Referral) It is really a matter of concern among these college students, because the alcohol consumption among these students is increasing higher every year. Is this trend helping the students in any approach? It is in fact shattering their lives, especially for college students as this over use problem has made them academically weaker each year. Researchers believe that â€Å"teen alcoholism is a behavior pattern that needs to be identified early to avoid serious consequences.† (National Treatment Referral) It is very necessary that a college student knows their priorities and their limits, and plan responsibly. First, it would be helpful to know the word definitions of over-consumption or over-drinking. In theory there is no fixed definition of these words. It depends on each and how they define it. Over-consumption of alcohol among students is drinking to an amount above their individual capacity, and according to NIAAA â€Å"It has been estimated that over three million teenagers are out-and-out alcoholics. Several million more have a serious drinking problem that they cannot manage on their own.† (NIAAA) It’s very necessary that one knows what our own capacity is, and if we try to cross this amount we can say we are intoxicated or wasted. National Institute on Alcohol Abuse and Alcoholism say that adolescents who begin drinking before age 15 are four times more likely to develop alcohol dependence than those who begin drinking at age 21. (NIAAA) Overdrinking is damaging and a serious problem. There is always an thrill among some teenagers concerning the age limit to legally drink, and the waiting of age to drink. These are all the physiological uncertainties that these teenagers have, which runs through their mind. However, these age groups have definitely lost their self-charge. These teenagers feel over-drinking indicate their up-and-coming maturity, plus feeling they look cool while consuming alcohol. Some of these teenage students feel that after their busy days or schedule, overdrinking can somehow help them to lack stress and make them feel relaxed. Some of these students often feel that it helps them build their self-confidence. Some of these teenagers often feel curiosity to consume alcohol but nevertheless, they are old enough to know their limits and responsibilities. Students have started taking excessive advantage of their independence which is ruining their careers and it’s influencing their academics sturdily. National Statement Referral states that â€Å"Alcohol is a drug that alters the mind and body but it is also accepted by society and gets a positive message from the media and promotions that glamorize alcohol usage.† (National Treatment Referral) There are many other disadvantages of overdrinking. We suffer from many physical injuries because we are not mentally in our senses, and it’s the next morning that we come to know about these injuries. Sometimes drinking can be such a problem to our friends, family and to our colleagues. One of the most dangerous elements of over-drinking is drinking and driving. Is over-drinking of alcohol so crucial that these teenagers have to sacrifice their lives for the same? According to Focus Adolescent Services every fifteen minutes someone dies from an alcohol-related automobile accident. Each weekend, each hour, a teenager dies in a car crash. Fully fifty percent of those crashes will involve alcohol. (Focus Adolescent Services) Over-drinking can affect the personality of these teenagers as well, â€Å"dependence on alcohol and other drugs is also associated with several psychiatric problems, such as: depression, anxiety, oppositional defiant disorder (ODD), antisocial personality disorder. And The three leading causes of death for 15- to 24-year-olds are automobile crashes, homicides and suicides alcohol is a leading factor in all three.† (Focus Adolescent Services) Teenagers who cannot control themselves can’t do so much in this competitive world. There are many ways to come out of this situations. Group counseling could be started in college or professionally and may be included as an extra credit classes as a motivation for the students to attend these meetings. National Treatment Referral has access to recovery centers and treatment facilities with specialized programs for teenagers. The earlier teen alcoholism is caught the more successful the treatment and recovery. Focus Adolescent Services also states that â€Å"lack of parental support, monitoring, and communication have been significantly related to frequency of drinking, heavy drinking, and drunkenness among adolescents. Harsh, inconsistent discipline and hostility or rejection toward children has also been found to significantly predict adolescent drinking and alcohol-related problems. Special Awareness programs should be conducted on the campus i n the form of theatre which can encourage them. Strong laws should be implemented against campus drinking. Instead of warning students for three times, a single warning should be implemented.† (Focus Adolescent Services) Legal measurements should become stricter on implementing these laws. If servers and vendors of alcohol apply these rules severely, than, there are definite chances in decreasing alcohol use among teens. In today’s society, the internet is becoming such a pertinent tool and many students rely on it, so by sharing articles on the internet can also help these teenage students to manage their alcohol redistribution use. Advertisements are a general role for these teenage students to have a â€Å"control-over† their drinking habits. According to an alcohol advertisement survey â€Å"two-thirds of parents say that seeing and hearing alcohol ads make teens more likely to drink alcohol, and almost three-quarters of parents say that alcohol companies ar e not doing enough to limit the amount of alcohol advertising that teens see, according to a survey conducted by Peter D. Hart Research Associates and American Viewpoint for the Center on Alcohol Marketing and Youth at Georgetown University.† (T. Buddy) Consequently, after looking to all these facts, it is essential these students realize the destructive of alcohol and to have the appropriate control over their alcohol consumption. Although, the curiosity of the teenagers can be over-powering, it should not be at the cost of their learning, career and most prominently, their lives. Students who are at the age of eighteen, are old enough to take their choices and know what their responsibilities are, and wait until they are twenty-one to drink responsibly. T, Buddy. About: Alcoholism Substance Abuse. About. 13 July 2003. 20 Mar. 2007 . NIAAA. National Institute on Alcohol Abuse and Alcoholism. 19 Mar. 2007 . National Treatment Refferal. alcoholism-symptoms.com. 20 Mar. 2007 . Research Papers on Teen Alcoholism - Health EssayStandardized TestingPersonal Experience with Teen PregnancyThe Relationship Between Delinquency and Drug UseHip-Hop is ArtThe Effects of Illegal ImmigrationAssess the importance of Nationalism 1815-1850 EuropeThe Spring and AutumnPETSTEL analysis of IndiaQuebec and CanadaCapital Punishment

Abortion in USA Essay Example | Topics and Well Written Essays - 1250 words

Abortion in USA - Essay Example Abortion, or the willful termination of pregnancy, has very much been in the forefront in public debate in the United States. The legality of abortions and the right to have one are topics very vociferously opposed or supported.It should be noted that abortion is not a new phenomenon. Abortions have been carried out in the world since a long time ago. There have been findings, such as various olden texts, that prove that abortions were being carried out thousands of years ago. Various religious texts have also broached the subject in one way or another. It can be safely assumed that almost everyone has an opinionated stance when it comes to abortion based on what they deem to be their religious, moral, ethical and/or personal beliefs. Though many countries have legalized abortions, in the United States, the debate regarding the legality has still not been resolved, despite the United States Supreme Court having made a ruling on the subject. A brief historical overview in this regard reveals that abortion had not always been illegal in the United States. It was around the middle of the nineteenth century that states started enacting laws that made abortions illegal (â€Å"History of Abortion†). However, religion or morality did not have much to do with it. It was actually based on the premise of increasing the population, and ensuring that the immigrant populations did not increase those of the older residents. The religious minded people got involved in the debate much later, especially upon the scientific discovery that human life began at inception and not at the end of the first trimester as it had been previously thought. However, with the outlawing of abortion, there was a trend of women, who sought abortions, to go to ill-equipped back-alley practitioners most of whom were not medically trained. This resulted in many complications and deaths. With the passage of time, in late twentieth century, some states did legalize abortion; however, by 1965 it was effectively banned, with a few exceptions like in cases of rape or incest, if the mother’s life was at risk, or if the fetus was not developing right. Then, in 1973, the United States Supreme Court, in Roe v. Wade, struck down all state laws that prohibited a woman from having abortion, thus, in effect legalizing it. Even after the ruling in Roe v. Wade, the debate has not died, and some states, with the support, or by the demand, of the public at large, have enacted laws that restrict federal and/or state funding for abortion, thus minimizing the scope of the ruling. The two sides of the debate that oppose or support it are termed pro-life and pro-choice respectively. Out of the many arguments that they give, some are being mentioned here. The pro-life group argues that human life should not be so easily dispensable. It is sacred and should be preserved. A person has not right to end another’s life. Moreover, if we seek to bring religion into the debate then most , if not all, religions prohibit abortion, therefore, people who follow these faiths should not engage in the practice. Those women who opt for an abortion, according to a lot of religious minded people, show their lack of faith in God and His Commandments and His Providence. They claim that if God blesses someone with children, then He is the One who shall also provide sustenance. Also, the pain that the fetus goes through during the process is horrendous, and the fetus should not be subjected to that. What is more, abortion may also result in severe psychological trauma to the woman involved and cause emotional scarring that may last her entire life. Furthermore, abortion can, and often does, result in various medical complications. The procedure itself is quite painful, and though it does not have a long duration, however, the medical complications it can give rise to may last a life time. These medical complications include infection, sepsis, cervix weakening, miscarriages in la ter life, difficulties in

Day vs. Night Essay Example | Topics and Well Written Essays - 500 words

Day vs. Night - Essay Example In looking at these kinds of oppositions, it is sometimes helpful to discover the various ways in which the elements involved are similar in order to understand better about how they are actually different. When it comes to discussing ideas, we tend to try to lump things into a yes or no situation, black or white or day or night. When you look closer at the picture, though, there is often a lot more maybe, grey or dusk involved in the comparison. One opposition considered so opposite that they have nothing at all in common is the opposition of day and night. There are many ways in which day and night are similar. They are both required to make up a complete cycle of the earth for example. While the time period of one may be longer at one time of the year, it is generally shorter at another time so that the world is dark approximately half the time and light the other half the time. Both day and night are regulated in their duration by the rotation of the earth around the sun and are a natural part of the physical properties of the world. Life on earth has developed with a dependence upon these alternating cycles of light and darkness in order to survive. Some plants and animals depend upon the hours of sunlight to generate the energy they require to survive just as they require the hours of darkness as a time in which they are able to regenerate. However, different processes occur at night, making different plants and animals active during this period of time under the cover of darkness and rest during the daylight hours. Both day and n ight are bordered by periods of transition in which it is neither day nor night and they are both presided over by a heavenly body. Despite these similarities, though, it is true that there are at least as many differences between day and night as there are similarities. While day is presided over by the brilliant yellow light of the sun, the night is ruled by the reflected blue light of the moon. Although the

Singal processing and linear systems + Matlab Essay

Singal processing and linear systems + Matlab - Essay Example The square wave response of a dynamic system measures how the dynamic system responds when a square wave is applied to its input. Generally a unit step function is applied defined by the following equation: Laplace transform and Fourier transform both are use for analysis of aperiodic signals. Laplace yields the result in s-domain where as Fourier transform yields it in frequency domain. Laplace is more often used because in s-domian it is easier to analyze the performance of the system by looking at the poles and the zeros. The Laplace transform is usually used in the context of one-sided signals, i.e. signals that are zero for all values of  t  less than some value. Usually, this "start time" is set to zero, for convenience and without loss of generality, with the transform integral being taken from zero to infinity. The Fourier transform is used for analyzing systems that process signals that are infinite in extent, such as modulated sinusoids. (LTI) The signal is compared both in frequency and time domain, before and after filtering. As seen in the graphs the amplitude of the signal after filtering is 1. The amplitude thus decreases from 2 to 1, showing 3dB attenuation. In frequency domain the higher frequency coefficients are zero. They cover almost half the total bandwidth. Thus the half band filter has made half of the coefficients zero with 3dB

Upgrading Existing Land Rover Defenders Powertrain

Upgrading Existing Land Rover Defenders Powertrain Upgrade the existing Land Rover Defenders powertrain Introduction The design teams project aim: To propose a program and new engine design to upgrade the existing Land Rover Defenders powertrain The following report discusses weaknesses of the current LR Defender along with a subsequent review of advanced engine technologies. Finally the design targets for the new proposed engine are defined with all necessary parameters calculated and justified. The design team have also considered the cost, manufacturability and marketing affects of the new engine as well as the performance requirements. Benchmarking The current LR Defender engine will be critically analysed in-relation to the vehicles main competitors in the market place. This will allow the weaknesses of the current engine model to be determined and thus rectified for the new specification engine. The engine throughout the following section will be critically analysed in the following main areas; Acceleration speed performance Engine power effectiveness (MEP and power density) Emissions of harmful gases and particulates Fuel economy The potential customer perception of vehicles engine and other performance criterion (including value for money). The following competitor vehicles were researched and compared to the current LR Defender to establish baseline requirements for the new spec engine; Jeep Wrangler Unlimited (regarded as the main competitor) Mercedes-Benz G-Class G550 Nissan Patrol GR Toyota Land Cruiser 3.0 D For a table of the above vehicles full specifications, benchmarked with the existing LR Defender, refer to Fig.4.7 in Appendix.1. Analysis Discussion By reviewing the benchmarking table, Fig.4.7 in Appendix.1, it becomes apparent that the current LR Defender is slower than its competitors by taking 14.7 seconds to reach 0 62 mph compared with the Jeep Wranglers time of 11.7 seconds. Although the LR Defender is not expected to have a very fast acceleration time, as it is an off-utility vehicle, potential customers may be discouraged by the Defenders slow acceleration characteristics compared to the Jeep and its other competitors. The fastest acceleration time is achieved by the Mercedes-Benz G550 which can go 0 62 mph in an impressive 6.1 seconds with its supercharged 5L V8 petrol engine. The cost of the Mercedes-Benz G550 however is 50,250 (compared to 27,610 for the Defender) and has twice the engine capacity of the Defender, so is expected to be far more powerful with its petrol engine compared to the 2.4L turbocharged diesel Defender engine. The design teams proposal is that the current LR Defender engine should at least match or beat its rival the Jeep Wrangler in areas such as acceleration time from 0-62 mph as the Defender is more expensive than the Jeep and approximately 230kg lighter. Another issue is that the Defenders top speed is the lowest out of all its competitors. This low top speed has also attracted criticism from motoring journalist Jeremy Clarkson (2006) who stated that the biggest drawback of the LR Defender is its weak engine and thus corresponding slow acceleration and top speed. The new LR Defender engine must eliminate these same criticisms to become more competitive in the market place and thus more appealing to potential customers. Vehicle Power per cylinder (kW/cylinder) Power Density Ratio (kW/L) LR Defender 2.4L D 4inl 22.50 37.48 Jeep Wrangler 2.8L D 4inl 32.50 46.81 Mercedes Benz G550 5.5L V8 petrol 47.75 70.23 Nissan Patrol GR 3.0 D 4inl 29.50 39.96 Toyota Land Cruiser 3.0D 4inl 30.75 41.25 Fig.1.0 compares the effectiveness of the engines that were benchmarked in detail. It shows that the Defenders current engine has the lowest power density in terms of engine capacity. This is a big weakness as it shows that the when not taking into account the Defenders relatively small engine capacity, its engine is vastly underpowered. The Mercedes Benz G550 as expected displays the best power density as it is a gasoline engine. The Defenders regarded closest rival in terms of target market and image, the Jeep Wrangler, also shows a much greater power density ratio. Or group propose to increase the engines the power density to be comparable with the Jeep Wrangler with at least a ratio of above 43kW/L. Vehicle Torque (Nm) MEP (Mpa) LR Defender 2.4L D 4inl 360 1.885 Jeep Wrangler 2.8L D 4inl 400 1.815 Mercedes Benz G-Class G550 5.5L V8 petrol 391 0.903 Nissan Patrol GR 3.0 D 4inl 380 1.619 Toyota Land Cruiser 3.0D 4inl 410 1.729 A weakness of the current Defender however is highlighted test drive of the vehicle by motor journalist Jeremy Clarkson (2006) for the Times Newspaper. He stated that the vehicle simply did not have enough torque to pull a horse trailer behind it at a reasonable speed. This can be backed up by the data seen in Fig.1.1 above which shows that the current Defender engine produces the least amount of torque out of all its competitors. This weakness is heavily compounded by the fact that the vehicle is marketed as an off-road vehicle and thus needs high torque requirements to be-able to navigate through steep and loose terrain effectively. As a consequence customers may be off put by the fact that the current Defender has less torque than its competitors and thus this issue will have to be addressed when upgrading the existing engine. The new engine must be made more environmentally friendly than the current engine as January 2013 will see the current Euro 5 emissions targets replaced by the Euro 6 legislation and thus stricter emissions targets. The Defender is third best out the five competitors the vehicle was benchmarked against in regards to CO2 emissions, which is an indicator for overall total emission performance. The current Defender comes second best to the Jeep Wrangler in regards to fuel economy, by achieving a combined fuel economy of 28.3 mpg. However the other diesel engine competitors, the Nissan Patrol and Toyota Land Cruiser are less fuel efficient than the Defender. When purchasing an off-road vehicle such as the Defender, fuel economy may not be the most important factor but it has become more important to potential customers over the last decade. The same could be said for the greater importance of emissions performance that potential customers may look for. The new Defender engine is likely to be more powerful and thus a better fuel economy target (comparable to 32.8mpg of the Jeep Wrangler) may be out of reach. However through reviewing and selecting technologies, the fuel economy performance could be improved slightly or at least kept the same. From analysing the Defender, by using the data displayed in Fig.4.7 (Appendix.1), it can be seen that the vehicle is neither the best nor worst performing vehicle in regards to fuel economy, but averagely in relationship to competitors. The balance of the current Defenders inline four engine configuration, according to Nunney (2006), has perfect primary balance because when one pair of pistons are moving up, the other pair are moving down at the same time. Inline four engines however do not have perfect secondary dynamic balance. This is because piston acceleration varies depending on its vertical position within the cylinder head in relation to the crankshaft that it is connected to. This leads to one pair of pistons moving faster than the other, which creates a secondary imbalance and results in the engine vibrating vertically. Nunney (2006) also explains that at low power configurations the secondary imbalance (vibration) is not too severe but can get considerably worse with increasing size and powerful engines. This may explain why the current inline 4 Defender engine has a lower displacement than its competitors, to reduce secondary imbalance vibration in order to appeal to potential customers and save costs on designing a crankshaft to damp heavy engine vibration. The following strengths are also exhibited by the current engine; Highest MEP value out of the competitors benchmarked against Best strength to weight ratio (could be due to basic interior making vehicle lighter) Potential customers may overlook the apparent power and torque shortfalls as the highly regarded Land Rover brand may persuade people to buy the vehicle anyway. Summary of existing Defender engine (compared to competitors); Weaknesses Strengths Slowest acceleration from 0 62 Mph Best Mean Effective Pressure of 1.885Mpa, better than competitor vehicles Lowest top speed of only 82 mph Highest Power to weight ratio (kW/kg) More expensive than Jeep Wrangler by >4000 even with poorer speed performance. Fuel economy is not the worst Lowest Power per cylinder produced (kW/cyl) Emission of CO2 is not the worst Secondary imbalance of straight inline four engine configuration (rivals also have this weakness) Long history of Defender may appeal to potential customers, thus engine shortcomings may be overlooked Lowest torque produced out of competitors Not the best in either fuel consumption or emissions, even with smallest capacity engine Lowest Power Density Ratio (kW/L) Current Vehicle Performance Trends Fig 1.3 shows the performance trends for Jaguar engines up to 2010. While exact performance targets cannot be extrapolated from the graph, The design group can see that the new Defender engine needs to have an increase in specific engine power. However with the increase in power, increased emissions and fuel consumption will occur. This in conjunction with Fig 1.4 below from Richardson (2010) shows how CO2 emissions have decreased despite the trend of engine power also increasing. While the trends from Figs 1.3 and 1.4 show that performance trends increase and emissions trends decrease, the group is concluding that potential customers for a LR Defender will be less likely concerned about the vehicles emissions or fuel economy compared to non-SUV vehicles customers. Thus increasing the torque (and power) of the current engine to match its competitors is prioritised. It is conceded that any improvement in fuel economy and emissions departments will be limited, but in the interests of Land Rovers image, any improvement on these characteristics will be beneficial. Advanced Engine Technology Supercharging Turbo-charging Technology Superchargers (mechanical drive driven) This is a device comprising of an air compressor to force more air into the engine. Forcing a greater amount of air (under positive pressure) into the engine provides more oxygen for the combustion process than without a supercharger. As a result more fuel can be thus provided for stoichiometric combustion reaction to occur and allowing more work per a cycle to be done. This thus increases the power output of the engine. The advantage of supercharging according to Daniels (2001) is that it multiplies the engines BMEP and torque by the amount the air compressor increases the atmospheric pressure into the engine. Supercharged engines also experience better throttle response than naturally aspirated engines. The disadvantage of using a supercharger is that it is generally less thermally efficient than the more common used turbocharger (which uses energy from otherwise wasted exhaust gas). Another drawback highlighted by Harris (2002) is that supercharging (particularly mechanical-supercharging techniques) puts extra strain on the engine and its components as they are required to withstand extra strains provided by the supercharging boost. This requires the engine to be made stronger, thus thicker, heavier and more expensive. Daniels (2001) also explains how the noise generated by a superchargers mechanical drive components can contribute to extra passenger discomfort. Turbochargers These devices consist of a turbine and a compressor and are a type of supercharger. The difference is that instead of mechanically driving a compressor to force more air into the engine, turbochargers uses the engines own exhaust gases (which would have been otherwise wasted). It does this by converting the kinetic energy from exhaust gases into rotational energy to turn a turbine. The turbine is connected to the compressor on the same shaft, thus this powers the compressor to draw in atmospheric air and pump it pressurised into the engine. The advantages of a turbocharger are same as for a supercharger as previously described of increasing engine BMEP. This is appropriate for the LR Defender which will need the extra power if being used off-road or in mountainous steep roads, which is the market the vehicle is targeted to. Turbochargers are also more thermally efficient than superchargers due to use of the otherwise wasted exhaust gas. This thus decreases exhaust emissions and fumes expelled into the atmosphere. Daniels (2001) also explains that for mainly diesel engines variable geometry turbochargers can maintain an appropriate exhaust gas speed though the turbo turbine when the engine is at low load. Disadvantages include the need for a cooler to cool exhaust gas before it enters the turbine therefore adding weight and bulk to the engine. During operation turbochargers also experience a turbo lag when the throttle is applied. As previously explained the LR Defenders competitors (particularly its main rival the Jeep Wrangler) have more powerful engines than the current Defender 2.4litre 4 cylinder engine. If upgrading the engine by increasing its cylinder capacity, more air (particularly oxygen) will need to be supplied to the cylinders for combustion. Thus the use of twin-turbochargers may be required to force more air into the cylinders to make the combustion process stoichiometric. Also the advantage of using two smaller turbochargers (twin-turbo), instead of a larger single turbocharger, is that turbo-lag is reduced. Usually a small turbocharger provides boost at low engine speeds and the second kicks in and supplies boost at higher engine speeds. There are two widely known types of twin-turbochargers called Parallel and Sequential types. When comparing the advantages and disadvantages of mechanically-driven superchargers and turbochargers it was decided to use turbochargers as they are more environmentally friendly and fuel efficient to run. The current engine for the LR Defender uses a variable geometry turbocharger and it is likely the new spec engine will also be turbocharged by the same type of unit. Variable Valve Timing Systems Camless Valve Systems Autoweek Magazine (2005) states that camless valve systems were tested in 2005 by Valeo on two Peugeot 407s successfully under extreme weather conditions and intensive testing. The valves were controlled by individual actuators and powered through solenoids to open and close valves. The advantages of camless systems, explained by Daniels (2001), include the following; Valve timing can be altered to as desired In theory some cylinders could be shut off (at low load) to allow others to run more efficiently Valve timing and lift can be matched to the needs of the engine with an estimated saving of up to 20% on fuel saving. The mechanical design of the engine can be simplified as the usage of a camshaft and other associated valve gear become redundant. The advantages however are currently overshadowed by the power needs of the camless system and the associated complexity and reliability issues if the vehicle has electrical problems. Peter Brown who is vice president of powertrain engineering and design for Ricardo stated in Autoweek Magazine (2005) It comes down to complexity and cost which sums up why camless systems are still not (although many think they eventually will be) utilised in passenger vehicle engines. For The new LR Defender engine camless systems will not be used for the disadvantages described above. Variable Valve Timing Technology Mechadyne International (2006) states that that the use of variable valve train systems can substantially reduce both fuel consumption and exhaust emissions. The amount by which the variable valve train systems reduce fuel consumption and emissions is going to be approximated to 10%. This is because, as the Bosch Automotive Handbook (2007) states, BMWs VALVETRONIC system reduces fuel consumption and exhaust emissions by over 12%. According to the Bosch Automotive Handbook (2007) the following types of variable valve timing technology are available; Camshaft phase adjustment Camshaft-lobe control Fully variable valve timing with camshaft Fully variable valve timing without camshaft Camshaft Phase Adjustment This type of variable valve timing adjusts the phase that the cams are in contact with the levers that open and close the valves. To change the phase of the camshaft small adjustments are made, by electrically controlled actuators, to the camshaft as a function of engine speed. Typically the camshaft can only be controlled to move to two pre-calculated extreme positions. Advantages include greater power, torque and efficiency being experienced for a wider range of engine speeds. Disadvantages to other valve timing methods include the limited range in which the valves timings can actually be altered. Fully Variable Valve Timing with Camshaft These types of systems can vary both valve lift and timing. The lobes on the camshaft have a curved profile which in conjunction with the camshaft being able to move freely laterally, this enables the valve lift and timing to also be varied independent to each other, which is an obvious advantage to the previously limited valve control systems mentioned above. Fully Variable Valve Timing without Camshaft These types of systems are very different, to the previously mentioned, as it replaces the use of a camshaft with either the following types of control methods solenoid (electromagnetic) or electro-hydraulic actuators. The biggest advantage of these systems are that operate independently from the crankshaft and thus this allows the valves to be opened at any time period of the engines cycle. This, as stated by the Bosch Automotive Handbook (2007), offers the greatest degree of freedom for valve timing and thus the greatest potential for reducing fuel consumption. Also deactivation of certain cylinders can be achieved thus allowing the active cylinders to work more efficiently at lower engine speeds. Disadvantages are however that superchargers cannot be installed (without very expensive and complicated design), and while space is saved from not using a camshaft, electrical components can be bulky and hazardous. Also the cost of fully variable valve timing systems means it is unlikely they will be incorporated into The new engine design. Camshaft-Lobe Control In these types of systems it becomes possible for a valves timing to be controlled by three separate camshaft lobes depending on the engine speed. According to the Bosch Automotive Handbook (2007) the one lobes profile is tailored so that valve timing and lift is optimised for the lower to mid engine speed range. Another lobes profile is optimised for higher engine speeds by maximising valve lift and opening times. Systems such as Hondas VTEC and Toyotas WTI use camshaft-lobe control method. Camshaft-lobe shifting types of variable valve timing also share similar advantages and disadvantages to the camshaft phase adjustment method. This type of variable timing (camshaft-lobe control) will be used for the new engine design. This is because it doesnt cost as much (or weigh as much) as the other variable valve timing systems while still being hugely advantageous in terms of performance, fuel economy and emissions control gain. Fuel Injection Systems Common Rail Fuel Injection These fuel systems consist of a common rail tubing system maintained at constant high pressure via a pump. Injectors for each cylinder in the engine are in turn connected to the common rail tubing. The injectors have solenoid valves which are electronically controlled via an engine ECU (Electronic Control Unit) to open and close at the desired timings as explained in detail by DENSO (2005). An advantage of common rail fuel injection is that control of fuel injection (according to Daniels, 2001) is at the injector itself and not at the pump which is the case with other fuel injection systems. Higher pressures can also be achieved thus more fuel can be injected into the cylinder in a shorter amount of time with better fuel atomisation, as described by DENSO (2005), leading to high combustion efficiency and a reduction in emissions. This is important as new emissions targets will have to be met in 2014 with the Euro 6 legislation when the vehicle will be on the market. The main disadvantage of this type of injection technology according to Daniels (2001) is that the injectors are expensive to manufacture and inherently complicated in design. Piezoelectric Injectors (For Common Rail Systems) Instead of using solenoid valves which are more frequently used in common rail fuel injection system, piezoelectric injectors can be used in higher performance engines. These injectors work by using piezoelectric crystals that expand when supplied with an electrical charge and thus opening and closing fuel injection valves. The following attributes of piezoelectric type injectors are common; Greater compact dimensions than solenoid valve injectors. More accurate control over injection timing and fuel volume. Piezoelectric injectors can be used with Accelerometer Pilot Control (APC) to minimise diesel engine vibration at low engine speeds. This is achieved by injecting a small quantity of fuel before the main injection quantity. Piezoelectric injectors can also operate faster with more frequency than solenoid valves (approximately five times faster), which allows greater control over fuel consumption and emissions. The Bosch Automotive Handbook (2007) states that the use of piezo-injectors for common rail fuel systems can reduce emissions by up to 20%. Emissions Reduction Technologies Stanton (2009) from roadtransport.com explains how the European Parliament (EP) and European Commission (EC) have agreed new targets for comply with Euro-6 emission legislation. The new Euro-6 targets will have to be met by vehicle manufacturers and thus the new spec LR Defender by 1st January 2013. This is before the new LR Defender model will reach Job 1 (mid to late 2013). It is therefore important that new and existing technologies are reviewed in Emissions control to meet these targets. In recent years the environmental performance of vehicles influences potential customers more than ever in their buying decision. It is therefore important we maintain Jaguars highly regarded brand image and compete with competitors by meeting the existing (Euro-5) and future Euro-6 emissions targets. Diesel Particulate Filters (DPF) This is a device which is responsible for removing small particulate particles and soot from the exhaust gas of a diesel engine. A DPF is not 100% but is normally found to be over 50% efficient most of the time. A good feature of a DPF is that its function according to torquecars.com (2008) is independent to a catalytic converter thus ensuring a fault in the DPF will not affect overall emissions critically. The advantages of particulate filters are much publicised including removing dangerous small particles from an engines emissions. The two types of DPF, active and passive, have their own advantages and disadvantages. The main disadvantages of DPF, explained by torquecars.com (2008), are highlighted below; The filters can get very hot causing a possible fire safety hazard. To remove a DPF very technical changes have to be made to the affected ECUs to change the sensitivity of sensors in the vehicles engine and exhaust. A DPF can decrease engine performance by at most 10% Bhp. Other Technologies Accelerometer Pilot Control (APC) Diesel engines are known to display harsh chugging and vibration at low engine speed, which can now be minimised through technology called Accelerometer Pilot Control (APC). An APC system, described by Delphi (2008) consists of an accelerometer (microphone) attached to the engine block which listens to the nature of the combustion which may have caused vibrations occur throughout the engine block. An engine management system then minimises the unwanted vibrations and noise by optimising the amount of fuel pilot injected for combustion, in a closed loop system, until acceptable noise and vibration levels are reached. ECU Remapping According to mobilechiptune.com (2007), when we remap an engine ECU we are fine tuning the program that deals with engine performance. Remapping or upgrading an ECU could therefore potentially increase the available engine power and torque. Mobilechiptune.com (2007) also states that remapping a diesel turbo engine ECU will produce 30 50% BHP on exact the specification, where diesel engines give the most impressive power and torque gains available. A remap of the ECU will definitely be required be a twin-turbo (or other technologies) are added to the new engine, however the ECU itself is only likely to achieve small gains in efficiency, fuel economy and emissions. Summary of Chosen Technologies Fig1.5 below shows the selected technologies the group is proposing for inclusion into the new Defenders engine. Fig1.5 also shows estimates of the expected improvement over engine performance, emissions and fuel economy. Also see Section.3 for justification to estimates below. Feature Selected Technology Twin-Turbo (reused exhaust gas Variable Valve train Diesel Particulate Filter Piezo Injectors* Improved ECU Mapping APC Performance, BHP + 20% + 10% 10% + 5% + 2.5% + 2.5% Emissions, CO2 g/km + 5% 10% ~ 0% 10% 2.5% 2.5% Fuel Economy, mpg 10% + 10% ~ 0% +10% + 2.5% + 2.5% *Piezo injectors as opposed to solenoid controlled injectors in a common rail fuel injection system. 3. Selection of Engine Arrangements Modified engine parameters: Total engine capacity 3000 cc. Capacity per each cylinder 500 cc. Number of cylinders 6 Type of engine Diesel engine The target is to improve engine performance (mainly torque) by increasing the number of cylinders from 4 to 6. Although there is a reduction of capacity per cylinder, a net increase in total engine capacity of 600 cc will not only compensate it, but also increases total horsepower produced. Kayne (2009) states that 6 cylinder engines are more suited to towing, off-road, hilly and mountainous areas while experiencing greater throttle response. Bore size is thus reduced from 89.9 mm to 82 mm while retaining the same stroke length. Bore/stroke ratio is 1.15, which is within the range of 1-1.3 for diesel engine. The weight of the current engine is estimated as being 180kg taken from a BMW 2.5L inline 4 diesel engine (plus weight added for turbo) from data compiled by Williams (2006), which is a similar spec to the current Defenders 2.4L turbo inline 4. The new engine is estimated as being 25% larger thus heavier by the same margin, and an additional 50kg for the additional technologies a dded. The new engine weight is thus taken as approximately 300kg. 4. Determination of Design Targets This section of the report provides estimations for the new engines power, torque, fuel economy and emissions characteristics. Below Fig1.7 Shows modifications to the Defenders current engine will affect the new engines power performance. Performance Estimation Feature Estimated affect on engines Performance BHP (%) affect from current Defenders 121 BHP engine Increasing engine capacity by 600cc + 25 % + 30 BHP Upgrading current Turbocharger to a Twin-turbo charger + 20 % + 24 BHP Installing a Variable valve train system Camshaft Lobe Control + 10 % + 12 BHP Decreasing the bore from 89.9mm to 82mm 10 % 12 BHP Adding a Diesel Particulate Filter 10 % 12 BHP Piezo-electric injectors (instead of solenoid valves) in common-rail system + 5% + 6 BHP Miscellaneous; -Accelerometer Pilot Control (APC) -Improved ECU Mapping -Improved intake air flow + 5 % + 6 BHP Total affect in BHP = + 50 % 60 BHP Increase Given the maximum power for previous engine is 121 bhp. Therefore, the new engines maximum power is: Power = (121 + 30 + 24 + 12 12 12 + 6 + 6)bhp = 181 bhp = 135kW Torque and Power at 3 operating conditions: T = 368.5 Nm @ max power (3500rpm) T = 400.0 Nm @ max torque (2000rpm) T = 120.0 Nm @ idle (1000rpm) The Torque at various engine speeds were calculated via using the following equation: Engine power: Pe=2*? *N* T Figure 1.8 shows the estimated power and torque curves for the vehicle. Justification of Targets Estimations While the decision has been taken to increase the engines capacity, increasing the engines power to increase the vehicles acceleration and torque characteristics, the fuel economy and emissions of the engine also has to improve. This is due to more stringent legislation and targets, as well as the expectations from potential customers who expect the engine to improve in every department. It may be said that that increasing the engines capacity from 2.4L to 3L means that the targets of decreasing the fuel consumption and emissions will be difficult. The group would argue however that the current Defenders engine is underpowered compared to its competitors and was consequently the recipient of bad reviews from motor journalists (such as Jeremy Clarkson, 2006). The Defenders potential customer market also may not require huge improvements in fuel consumption and emissions. This is because the Defender is going to be utilised for and marketed as an off-field vehicle with specialist applications such as towing and rough terrain excursions. These categories of vehicles are expected by customers to have poorer fuel economy and emissions than other smaller vehicle types. These customer expectations will therefore be beneficial when designing the engine as while emissions and fuel economy is targeted to at least stay the same, the issue of increasing the Defenders torque can be prioritised. The increase in engine capacity naturally means the emissions and fuel consumption will increase. To overcome this advanced engine technology will be utilised in order to decrease the emissions and fuel consumption. Estimations will be made regarding how much saving (in terms of percentage) the addit

Social Mobility Essay -- essays research papers

Mobility is the characteristic of every social system. Social mobility is the movement of individuals, families and groups from one social position to another. It may be studied in terms of redistribution of resources and power among the different social strata and its effect on the people involved. In the status societies the social status of the person is determined from his work. Social mobility occurs whenever people move across social class boundaries, from one ⌠occupational level to another. The study of Social Mobility is important for a number of reasons: - 1. It matters to people to get on in life, 2. We can study people's life histories, 3. We can see changes in the class system, 4. The more mobile a society is may show it to be more open and fairer, 5. Mobility affects the way classes are formed, their size and shape. A common sense notion regarding class in the U.S can be represented as a few rich people on the top, few poor people at the bottom, and the middle class majority in the center. Mostly everybody has a comfortable standard of living. If we divide the U.S. population in 5 equal proportions and their corresponding share of the nation ¡Ã‚ ¯s income we get the following:  ¨i  Ã‚  Ã‚  Ã‚  Ã‚  Top 20% of the population receives 49.1% of the total income  ¨i  Ã‚  Ã‚  Ã‚  Ã‚  Second top 20% of the population receives 24.3% of the total income  ¨i  Ã‚  Ã‚  Ã‚  Ã‚  Middle 20% of the population receives 15% of the total income  ¨i  Ã‚  Ã‚  Ã‚  Ã‚  Second bottom 20% of the population receives 8.9% of the total income  ¨i  Ã‚  Ã‚  Ã‚  Ã‚  Bottom 20% of the population receives 3.6% of the total income The top 20% of the population have a disproportionate share of the income compared to their share in the population. Looking at the standards of living by consumption the ration between the top 20% and the bottom 20% is 9:1. This comparison illustrates great inequality in US society. It is often said that high levels of inequality is necessary because it stimulates competition, it creates incentives for excellence, and provides rewards for performance. The conflict perspective, on the other hand, argues that people at the bottom won't take it and they will work towards changing the status quo. For instance, poor people may use their vote to elect officials who will represent their interests... ...enturies. It's roots are found in religious literature of around 1200-1000 BC, and, although it has technically been abolished in India, in practice it is still very much alive and thriving. Being either one of these castes, does affect one ¡Ã‚ ¯s position in society and by all means, the social mobility. Although there is not much distinction between the Brahmins, Kshatriyas and Vaishyas, if one is a  ¡Ã‚ °Harijan ¡Ã‚ ± there are obvious hindrances. The term coined by Mahatma Gandhi, literally means  ¡Ã‚ °People of the god ¡Ã‚ ±, and it was meant in every way because these people also called the untouchables, were literally the social outcastes and had nobody ¡Ã‚ ¯s support. Even till today, in Rural India the orthodox people will not even drink water from their hands. However, the government to is making efforts to abolish these distinctions. Social Mobility in India and in the US has a very different concept. In the US, mobility is based on money, i.e. he who has money dominates. However, in India, money doesn ¡Ã‚ ¯t play an all-important role. There are other factors that govern social mobility and these factors do need to be looked into because some of these are not fit to exist in the 21st century.

Value Proposition of Gym/Spa Business

A business endeavor like a gym and spa is a rewarding one, due to the fact that you are not only doing business but you are doing people a favor as well. What is nice about a proposed gym/spa business that it complements each other, a spa will always complement to a spa, because it provides the clients a chance to relax after a rigorous workout. Aside from that, the owner of such business can have lots of opportunities the bodybuilding and fitness industry has its complementary products as well. Among these are food supplements that people place a premium nowadays. This can fuel the revenues of the business as well. On the other hand, the spa will draw ladies and metrosexuals who are put a premium on wellness services. The spa will complement the gym and it is evident among prominent gyms with their own spa services. Pricing and Advertising The gym/spa will get athletes and sports celebrities as their endorsers. This will enable the gym/spa to draw clients which will be motivated to enroll in the gym/spa. The payment will be on a monthly, quarterly, and annual basis. This will give potential clients the option to enroll at the gym/spa based on their income. Market Niche of a Gym/Spa Business A slogan that can be used with this business is â€Å"Health is Wellness, The Rest Would be for The Best!† The gym/spa business will hold a firm position on its market niche because it will draw people from all walks of life that makes this business worthwhile and lucrative.   Mostly the people who are stressed-out from work will draw your attention. It is evident among gyms like Fitness First and Gold’s Gym who have their own spa amenities inside the gym. Another thing is that, you can engage into this business with some of your friends, so as to draw a variety of crowd that will eventually be your regular clients. SWOT Analysis Strengths  § The gym/spa showcases a wide variety of state of the art amenities and equipment that will promote fitness.  § It has other amenities aside from the usual gym/spa that will augment the gym/spa itself. Weaknesses  § The gym/spa will have a hard time enticing blue collar workers because of its massive advertising using celebrities.  § It is a hindrance that there would be a possibility that the gym/spa can only accommodate a certain number of clients inside the vicinity. Opportunities  § The gym/spa will have potential consignments with other business establishments, such as nutritional supplement shops that will augment the advertising of the gym spa.  § The gym/spa can make their service 24 hours a day because there are people’s work shifts vary. Threats  § The gym/spa is deemed to get a demand for the increase in payments if ever client enrolment will be at a low. Nearby gyms like those within the neighborhood will be a petty yet potential com

Delete Questions in ACT English 6 Strategies

Add/Delete Questions in ACT English 6 Strategies SAT / ACT Prep Online Guides and Tips Brace yourself for some more ACT English fun. Add/Delete questions are a common type of rhetorical skills question on the ACT English section. These questions ask whether you should add or delete a sentence or phrase within a passage. They test your reading comprehension and ability to analyze sentences within a passage. In this post, I'll do the following: Explain add/delete questions. Teach you the basic constructions of add/delete questions. Provide example questions. Give you strategies and a step-by-step approach for answering this type of question. General Construction of Add/Delete Questions Being able to quickly identify an add/delete question on the ACT will be helpful in determining how to go about finding the answer. Here are the constructions for the different types of add/delete questions you will encounter on the ACT English section. Add Questions This is the general construction of an add question: At this point in the essay, the author is considering inserting the following sentence: Should this sentence be inserted? A. Yes, because... B. Yes, because... C. No, because... D. No, because... Add questions are two part questions. First, you have to determine if the sentence should be added and if it logically fits at that point in the passage. Then, you have to identify the reasoning for why the sentence should or shouldn't be added. Now, let's take a look at the general constructions of delete questions. Delete Questions There are two primary types of delete questions. Type #1: Kept or Deleted This is the construction of the first type: At this point, the author is considering deleting the following sentence: Should this be kept or deleted? A. Kept, because... B. Kept, because... C. Deleted, because... D. Deleted, because... These are also two part questions.You have to determine if a sentence or phrase is relevant at that point in the passage. If it's not relevant, then it should be deleted; it has to be necessary in the context of the passage. Next, you have to determine why it should be kept or deleted. Additonally, there is another type of delete question. Type #2: Primarily Lose This is the general construction of the second type of delete question: The writer is considering deleting the phrase or sentence...If the phrase or sentence was deleted, the sentence or essay would primarily lose: For these questions, you have to analyze the purpose of a phrase in a sentence or the purpose of a sentence in a passage to determine what thesentence or phrase provides to the passage. Follow these steps to right answers! Strategies for Add/Delete Questions After you identify an add or delete question, you need to know the strategies and steps for correctly answering the question. First we'll go over how to tackle add questions. Add Questions The following excerpt is taken from the last paragraph of a passage about fixing raptor feathers: 75. At this point, the writer is considering adding the following true statement: The imping procedure is just one of the many responsibilities bird rehabilitators have. Should the writer make this addition here? Yes, because it reveals the relative importance of imping compared to the other work of bird rehabilitators. Yes, because it reinforces the idea that imping is of great benefit to raptors. No, because it goes beyond the scope of the essay, which focuses on how the feathers of certain types of birds are repaired. No, because it undermines the essay's earlier claim that imping is the most important work that bird rehabilitators do. #1: Analyze the Added Sentence to See What It's Doing The excerpt that I gave you describes the imping procedure. Earlier in the passage, the definition of imping is given: The added sentence is discussing the activities of bird rehabilitators more generally. It's placing the focus on bird rehabilitators and what they do. #2: Refer Back to the Passage to See if the Sentence Should Be Added Given Where It Would Be Placed The added sentence mustbe relevant in context. For our example, thesentence should be related to imping. For ACT English passages, you can typically determine main ideas with the title, and, if necessary, the first couple of sentences of the passage. For our example, the title is Fixing Raptor Feathers. Here are the first couple of sentences: Raptors, or birds of prey, cannot afford to begrounded for weeks waiting for a large number offlight feathers to regrow. They must be able to fly ifthey are to hunt and eat. Based on just the title and the first couple of sentences, we can determine that the focus of the passage is on fixing raptor feathers. Therefore, the sentence would not be an appropriate conclusion because the passage is not focusing on bird rehabilitators or their responsibilities but on the importance and process of fixing raptor feathers. #3: Answer the Yes or No Question First Because the sentence would not logically fit in the context of the passage, we can determine that the answer is no. #4: Eliminate the Two "Yes" Answer Choices or the Two "No" Answer Choices Since we have determined that the sentence should not be added, we can eliminate answer choices A and B. #5: Provide the Reasoning in Your Own Words In my own words, I would say that the sentence should not be added because the passage focuses on fixing raptor feathers, not on the responsibilities of bird rehabilitators. #6: Pick the Answer Choice that Most Closely Matches Your Reasoning Answer choice D is wrong because nowhere in the passage does the essay claim that imping is the most important job of bird rehabilitators. Even though it's possible that imping is the most important job of bird rehabilitators, you can't assume that's true unless it's directly stated or inferred from what's written in the passage. Answer choice C is the onethat most closely matches our reasoning. The added sentence would be outside the scope of the essay because the essay's focus is on fixing raptor feathers. Delete Questions Now that we've covered add questions, let's go through how to answer the two types of delete questions. Type #1: Kept or Deleted The following excerpt is from the first paragraph of a passage on a potter's kiln: #1: Determine the Purpose of the Deleted Portion You have to figure out why the phrase or sentence is included at that point in the passage. What's it doing there? In our example question, the phrase "and transform glazes to glorious colors" provides more information about what a kiln does. #2: Refer Back to the Passage to Determine if the Deleted Portion Is Necessary Given Its Context and the Passage's Focus For our example, we have to determine if providing more detail about the purpose of a kiln is relevant to the essay's focus. Once again, let's look at the title to determine the main idea. The title of this passage is The Potter's Kiln. Providing more information about the purpose of a kiln is indeed relevant to the essay's focus. #3: Answer the Kept or Deleted Question First Because the phrase provides a relevant detail about the passage's focus, the phrase should be kept. #4: Eliminate the Two Kept or Deleted Answer Choices We can eliminate choices C and D because we have determined that the phrase should be kept. #5: Provide the Reasoning in Your Own Words I would say that the phrase should be kept because it provides descriptive information about kilns, the topic of the passage. #6: Select the Answer Choice that Most Closely Matches Your Reasoning Answer choice A is wrong because the phrase has nothing to do with the time-consuming process of painting pottery. The phrase simply mentions that a kiln can transform glazes to glorious colors. Answer choice B is closest to our reasoning. If you follow these steps and comprehend the meaning and function of the deleted portion, you should be able to arrive at the correct answer relatively quickly. Now, here is the process for answering the second type of delete question. Type #2: Primarily Lose Take a look at this actual ACT "primarily lose" question: #1: Determine the Purpose of the Deleted Portion To determine the purpose of the deleted portion, first look at the sentence without the deleted phrases. The sentence would read, "By contrast American society has often been described as one that values youth over age." In that sentence, the contrast is different and less descriptive. Therefore, the phrases make the contrast more descriptive and specific. #2: State What Would Be Lost In Your Own Words We can say that the sentence would be less descriptive and have a different contrast if the phrases were deleted. #3: Eliminate Wrong Answer Choices The correct answer must state the purpose of the phrases. Incorrect answers can sound logical, but they will not match the function of the phrases in the specific sentence. Only consider the specific portion that would be deleted. Answer choice "F" is wrong. The phrases "the vibrant energy of" and "the wisdom and experience gained with" do not show a personal or reflective tone. That's not their purpose in the sentence and there's nothing about those specific phrases that indicates a personal or reflective tone. Answer choice G is wrong. I think we can all admit that there is nothing inherently funny about those phrases. Answer choice J is wrong. Nowhere in the sentence does the author indicate a preference. The phrases are both positive. #4: Select the Answer that Most Closely Matches Your Own Answer choice H is correct. The phrases are details that illustrate the contrast. American society does not just value youth over age, but American society values the vibrant energy of youth over the wisdom and experience gained with age. Let's reviewsome general tips to help you with all add/delete questions. Quick Review: General Strategies Follow this advice when answering add/delete questions. #1: Determine the Purpose of What Is Added or Deleted In order to answer any add/delete question, you need to figure out what purpose theaddition or deletion serves in the sentence. The "primarily lose" questions are directly asking you to determine the purpose of a phrase or sentence. #2: Refer Back to the Passage to Help Determine the Context of Added or Deleted Portions and if Added or Deleted Portions Logically Fit Any added sentence should logically follow the previous sentence and connect to the following sentence. Itshould also be relevant to the focus of the paragraph or passage. A phrase should be deleted if it's not relevant to the purpose of a sentence. A sentence should be deleted if it falls outside the scope of the essay or doesn't logically follow the previous sentence. For delete questions, another good strategy is looking at the sentence or paragraph without the portion the question is asking about. Then, you can more easily determine if deleting that portion would be appropriate. #3: For Two Part Questions, Answer the First Part First For add questions, answer the "yes" or "no" question first. For delete questions, answer the "kept" or "deleted" question first. #4: Eliminate Wrong Answer Choices For two part questions, you can immediately eliminate the two answer choices that don't match your answer to the first part of the question. For "primarily lose" questions, eliminate the choices that don't match the purpose of the phrase or sentence. #5: State Your Reasoning in Your Own Words For all add/delete questions, state why something should be added or deleted ordetermine what would be lost in your own words, before looking at the answer choices. #6: Select the Answer Choice That Most Closely Matches Your Reasoning Ideally, you will see an answer choice that is almost identical to your reasoning. That should be your right answer. If there's no answer choice that matches your reasoning, work backwards to identify the correct answer. Start with a possible answer choice and determine if it correctly answers the question. Or, if time permits, review the question again to make sure you didn't make a mistake. What's Next? Make sure you're comfortable with all of the different types of rhetorical skills questions that appear on the ACT English section. Some examples of these types of questions include macro-logic, relevance, and author main goal. Are you making one of the 8 most common mistakes? Learn how to avoid them with this post. Rhetorical skills like Add/Delete questions are harder if you don't understand the big picture. Make sure you know the best way to approach the passage. Want to improve your ACT score by 4 points? Check out our best-in-class online ACT prep program. We guarantee your money back if you don't improve your ACT score by 4 points or more. Our program is entirely online, and it customizes what you study to your strengths and weaknesses. If you liked this English lesson, you'll love our program.Along with more detailed lessons, you'll get thousands ofpractice problems organized by individual skills so you learn most effectively. We'll also give you a step-by-step program to follow so you'll never be confused about what to study next. Check out our 5-day free trial:

Common Psychology Words Based on Greek or Latin Roots

Common Psychology Words Based on Greek or Latin Roots The following words are or have been used in the modern science of psychology: habit, hypnotism, hysteria, extraversion, dyslexia, acrophobic, anorexia, delude, moron, imbecile, schizophrenia, and frustration. They come from either Greek or Latin, but not both, since I have tried to avoid words that combine Greek and Latin, a formation that some refer to as a hybrid classical compound.   Twelve Words With Latin Roots 1. Habit comes from the second conjugation Latin verb habeÃ… , habÄ“re, habuÄ «, habitum to hold, possess, have, handle. 2. Hypnotism comes from the Greek noun á ½â€˜Ãâ‚¬ÃŽ ½ÃŽ ¿Ãâ€š sleep. Hypnos was also the god of sleep. In The Odyssey Book XIV Hera promises Hypnos one of the Graces as a wife in exchange for putting her husband, Zeus, to sleep. People who are hypnotized seem to be in a trance resembling sleep walking. 3. Hysteria comes from the Greek noun á ½â€˜ÃÆ'Ï„Î ­Ã ÃŽ ± womb. The idea from the Hippocratic corpus was that hysteria was caused by the wandering of the womb. Needless to say, hysteria was associated with women. 4. Extraversion comes from the Latin for outside extra- plus a Latin third conjugation verb meaning to turn, vertÃ… , vertere, vertÄ «, versum. Extraversion is defined as the act of directing ones interest outside oneself. It is the opposite of Introversion where interest is focused within. Intro- means inside, in Latin. 5. Dyslexia comes from two Greek words, one for ill or bad, ÃŽ ´Ãâ€¦ÃÆ'- and one for word, ÃŽ »ÃŽ ­ÃŽ ¾ÃŽ ¹Ãâ€š. Dyslexia is a learning disability. 6. Acrophobia is built from two Greek words. The first part is ÃŽ ¬ÃŽ ºÃ ÃŽ ¿Ãâ€š, the Greek for top, and the second part is from the Greek φÏÅ'ÃŽ ²ÃŽ ¿Ãâ€š, fear. Acrophobia is a fear of heights. 7. Anorexia, as in anorexia nervosa, is used to describe someone who doesnt eat, but can simply refer to someone with a decreased appetite, as the Greek word would indicate. Anorexia comes from the Greek for longing or appetite, ÏÅ'Ï ÃŽ µÃŽ ¾ÃŽ ·. The beginning of the word an- is an alpha privative that simply serves to negate, so instead of longing, there is a lack of longing. Alpha refers to the letter a, not an. The -n- separates the two vowels. Had the word for appetite begun with a consonant, the alpha privative would have been a-. 8. Delude comes from the Latin de- meaning down or away from, plus the verb lÃ… «dÃ… , lÃ… «dere, lÃ… «sÄ «, lÃ… «sum, meaning play or mimic. Delude means to deceive. A delusion is a firmly held false belief. 9. Moron used to be a psychological term for someone who was mentally retarded. It comes from the Greek ÃŽ ¼Ãâ€°Ã ÃÅ'Ï‚ meaning foolish or dull. 10. Imbecile comes from the Latin imbecillus, meaning weak and referring to physical weakness. In psychological terms, imbecile refers to someone who is mentally weak or retarded. 11. Schizophrenia comes from two Greek words. The first part of the English term comes from the Greek verb ÏÆ'χÎ ¯ÃŽ ¶ÃŽ µÃŽ ¹ÃŽ ½, to split, and the second from φÏ ÃŽ ®ÃŽ ½, mind. It, therefore, means splitting of the mind  but is a complicated mental disorder that is not the same as a split personality. Personality comes from the Latin word for mask, persona, indicating the character behind the dramatic mask: in other words, person. 12. Frustration is the final word on this list. It comes from a Latin adverb meaning in vain: frustra. It refers to the emotion one may have when thwarted.

Explain the issues in natural disasters and humanitarian emergencies Coursework

Explain the issues in natural disasters and humanitarian emergencies that China faces and propose solutions that you feel may be - Coursework Example Again, Chinese regulations require their buildings to be earthquake-resistant. However, the collapses of schools, hospitals, and factories during natural disasters raise questions about the country’s enforcement of building codes (Woodrow Wilson International Center for Scholars, n.d.). The Ministry of Science and Technology of China has established a few monitoring and early warning systems around Mount Ailao in southwest China’s Yunnan Province, the southeast China’s Fujian Province and the reservoir region of the Three Gorges Project on the Yangtze River. However, these structural systems are not sufficient given the vast topography of the country (Xinhua, 2011). In order to address these issues, the government of China needs to invest considerably towards the expansion of the public health system to provide shelter, potable water, food, medical care and sanitation. Secondly, the country can work in collaboration with international agencies to develop and impl ement frameworks for disaster response, risk assessment, evacuation measures and public education. Finally, the government also needs to ensure that building codes and policies are implemented within their country.

See instructions Research Paper Example | Topics and Well Written Essays - 1250 words - 2

See instructions - Research Paper Example According to narratives by Fredrick Douglass ,who apparently was born in slavery but managed to educate himself and later escaped establishing himself as one of America’s greatest leaders, slavery continued to thrive in spite of slave owners claiming theirs was a nominally Christians democracy. Douglass wrote three main autographical narratives that have been identified not only as classics of American history but also as American literature. Douglass, normally, wrote with unmatched fierce intelligence and eloquence that made him a giftedly successful spokesman not only for the abolition of slavery but also in regard to equal rights. He thus shapes an extremely inspiring image of self-realization in the wake of colossal odds. In one of his narratives known as ‘Narrative of the Life of Fredrick Douglass, an American Slave’ that was published in 1845, 7 years after he escaped from slavery, Douglass writes in response to cynics who could not believe that such an arti culate orator was once a slave(Kornblith,2010). This is a powerfully compressed description of the oppression and cruelty that took place in Maryland plantation, where Douglass was born and brought up. This account catapulted him to the front position of anti-slavery crusade, drawing in thousands, white and black alike, to this cause (Douglass,2014). In another of his account, My Bondage and My Freedom which was published, in 1855, after Douglass had become a well-known newspaper editor, he further expands the narration of his slavery years. Douglass with astounding psychological penetration explores the agonizing ambiguities together with delicately corrosive consequences of black-white relationships under slavery and afterwards recounts his resolute resistance to the Northern segregation. In addition, the book includes extracts from some of the