Sunday, January 19, 2020
Anger by Gender
Popular stereotypes typically do not associate females with the direct expression of anger. Brody and Hall ( 1993) reviewed research on gender and emotion and found that people very clearly see females as more expressive than males when it comes to many emotions, but not in regard to anger, which was associated with males.They cite studies that indicate the consistency of such beliefs; people from various socioeconomic and age backgrounds share the belief that anger is expressed more often and more intensely by males. Cultural norms encourage or at least allow males to respond angrily when provoked; cultural defmitions of femininity make it difficult for females to be openly hostile or angry. If women fail to restrain their anger, they tend to be viewed as emotional or hysterical (Buss, 2001).These assumptions are reflected in the research literature, which focuses primarily on male-to-male or male-to-female hostility and aggression, rather than hostility and aggression on the part o f females directed at either at men or other women.This double standard is beginning to erode. Some observers believe that women can be more aggressive and assertive today, although they are still subject to more limits than men (Averill, 1992).Francesca Cancian and Steven Gordon (1988) document a normative shift in the twentieth century, which actually encourages women today to express emotions such as anger. Their research linked marital emotion norms to political and cultural events and found that in periods of social upheaval, women are encouraged to be more open with their anger.Research presents mixed findings in regard to gender and various measures of anger and hostility.For self-reported hostility, paper-and-pencil measures such as the Buss-Durkee Hostility Inventory have not revealed sex differences. Barefoot. et al. ( 1991), using a large national sample, found that men outscored women on cynical hostility regardless of age. James Check and Neil Malamuth ( 1985) assessed hostility in Canadian women and men and found that the men's average score was slightly higher than the women's (8.79 versus 7.57).When men and women were asked to keep track of specific anger experiences, Campbell ( 1993) found no significant differences in the frequency of such experiences: over a oneweek period, men reported that they became angry between six and seven times, and women between five and six times. (Buss, 2001)Tavris ( 1989) examined sex differences in anger and found no differences in how anger is experienced, how it is expressed, how well it is identified, or what categories of things arouse anger. She believes, however, that although women do not feel anger any less strongly than men, they are less likely to express it because of the costs associated with their lower social status.Tavris points out that men and women become angry about the same categories of offenses, such as condescending treatment, injustice, and attacks on self-esteem, but they often disagree about what they consider to be condescending treatment, injustice, or attack.Frodi and Macaulay ( 1977) found that both women and men were angered by condescending treatment: women regardless of the provoker's sex and men by a superior attitude on the part of a female. Men were more angered than women by physical and verbal aggression on the part of another male.Brody and Hall ( 1993) reviewed studies showing that there are fairly clearcut differences in regard to positive emotions (with women experiencing and expressing them more), but in regard to negative emotions, especially anger, the findings are less consistent. Females were more likely to feel and express ââ¬Å"intropunitiveâ⬠emotions (such as shame, sadness, and guilt), and men were more likely to feel and express ââ¬Å"outward directedâ⬠emotions (such as contempt).However, for anger, differences between the sexes are often very small or males are more angry than females. Kopper and Epperson (1991) looked at the relationship between sex and sex role identity on anger expression and found sex not to be an important factor in the expression or suppression of anger (however, sex role identity was).Some research finds more anger on the part of females. The review article by Brody and Hall ( 1993) cites research by Brody that found more anger on the part of women toward imaginary male protagonists.Mirowsky and Ross ( 1995) investigated whether women's greater distress accounts are a function of women's greater expressiveness (they are not) or whether they truly experience more distress (they do). In the process of their work they found that females experience various feelings, including anger, more often than males.Reiser ( 1994) explored respondents' feelings of anger toward the other sex using a random sample of North Carolina residents and found a significant sex difference, with female respondents reporting greater anger than male respondents. Conger et al. (1993, cited by Miroswky and R oss 1995) surveyed 451 married couples who lived in the rural Midwest and found that the women reported significantly greater levels of marital hostility than the men.
Friday, January 10, 2020
Houston â⬠How to Talk to a Hunter Essay
Through her How to Talk to a Hunter short story, author Pam Houston uses the second-person point of view to describe a rather controversial relationship between a certain liberal woman and a conservative man. The author thus explores the dynamics of gender relations through this unconventional and subtle approach. By employing this unusual point of view, the author seeks to involve all her readers in the storyââ¬â¢s happenings. Further it is notable that Houston dwells on a rather sensitive topic of gender relations. Usually conservative societies seek to unjustly subordinate women to male power. The author thus deems it fit to make use of the second-person point of view to inform readers of, not what the storyââ¬â¢s characters are experiencing, but rather, to explore the readersââ¬â¢ thoughts and feelings. This approach accommodates a great variety of readers into the storyââ¬â¢s plot by entertaining persistent ambiguity that leaves the interpretation of the narrativeââ¬â¢s theme open to audience speculation. To illustrate, by describing the reaction that the hunter will have towards the lady in the second-person, the author avoids being unnecessarily antagonistic in the storyââ¬â¢s development (Houston 12). Instead, Houston allows readers to, firstly, examine their sentiments towards the storyââ¬â¢s happenings and secondly, to identify with the some of the storyââ¬â¢s happenings. In effect, the author leads the reader in developing the storyââ¬â¢s plot as opposed to unilaterally telling the story by herself. In addition, this second-person point of view enables the author to avoid taking sides with regard to the gender debate. Rather, Houston incorporates both gender in analyzing and critiquing the existing gender relations. This technique thus makes the literary work acceptable to a wide variety of people from both the female and male gender. Houston capitalizes on the ability to arouse readersââ¬â¢ feelings as she seeks both female and male acceptance, and identification with, her How to Talk to a Hunter story.
Thursday, January 2, 2020
The Healing Power Of Music - 1612 Words
The Healing Power of Music The Alzheimerââ¬â¢s Foundation of America, defines Alzheimerââ¬â¢s as being the most common form of dementia, occurring in 60% to 80% of people suffering from symptoms of dementia (Clair Tomaino, 2016). The foundation also states that it is an irreversible disease that progresses over time, destroying cognitive functions such as: memory, learning, and language skills. Furthermore it may alter behaviors and mood, cause disorientation, as well as agitation (Clair Tomaino, 2016; Witzke, Rhone, Backhaus, Shaver, 2008, p. 46). Those percentages are quite large, and they are only going to keep rising. How can those of us in the medical field, and out of the field attempt to repair or slow down the effects of this disease? What options do we have at our disposal? Interventions that can be used to assist in relieving symptoms are animal-assisted therapy (AAS), music therapy, and light therapy as well as massage (Witzke, Rhone, Backhaus, Shaver, 200 8, p. 46). Although Witzke, Rhone, Backhaus, Shaver (2008) state that in Japan music therapy is preferred as opposed to animal assisted therapy for dementia and Alzheimer patients due to the fact that they have had issues trying to control the breeding as well as control infection. They also recorded that there is the possibility of a patient not liking animals or having an allergy to the animal. Music has the ability to bring us back in time and recreate a memory just from hearing a few cords of aShow MoreRelatedThe Healing Power Of Music1863 Words à |à 8 PagesThe Healing Power Of Music Music has survived throughout the course of human history because it has always been such a huge part of the human life. Music allows us to feel joy, sadness and fear. It can bring us pleasure, express what we cannot express in words. In fact, no matter what culture, race, or ethnicity you will find music is always present and contains an important role in society. Not only does music affect your mind but it effects our bodies as well. Music can aid in recallingRead MoreThe Healing Power of Music Essay960 Words à |à 4 PagesHowever, the cure to these and many other infirmities may be found within your own ipod. Music, in its many forms, can and should be used as a healing instrument. While it may not completely alleviate the need for drugs, its possible that music therapy could accompany medical drug use in order to lessen the amount of potentially harmful medications often consumed by patients. In order to understand how music can affect the body and mind, one needs to understand the composition of sound itselfRead MoreThe Healing Power of Music Essay1350 Words à |à 6 PagesIn definition, music therapy is, ââ¬Å"the clinical and evidence-based use of music interventions to accomplish individualized goalsâ⬠(American Music Therapy). Music has been an element of the human psyche since early ancestors fell asleep to the rhythmic sounds of waves lapping against the shore and awoke to singing birds at daybreak. Theories on music therapy trace back to ancient Egypt where it was called the ââ¬Å"physic of soulâ⬠in other words, a healing power (Podolsky). It gained resurgence during WorldRead More The Healing Power of Music Essay3135 Words à |à 13 Pagesthat the single tear was his way of telling them goodbye. Ott stated that ââ¬Å"music can go where words cannotâ⬠(Griffen). Research shows that music is to the brain as physical exercise is to the h uman body. Some form of exercise is necessary for a healthy body. People know what to do to tone their body but do they exercise their minds regularly and properly? Do they know that listening to Mozart can help increase their memory? Music has a greater impact on human lives than we think; it assists in releasingRead MoreGreek God Apollo Research Paper1689 Words à |à 7 Pagestrust who excelled and supported all of the fine arts of the Greek civilization such as music, art, and poetry (God Apollo). One of the most underestimated traits of Apollo was his healing powers, in which he helped out many Greeks in desperate times, like the Trojan War (Cartwright). The Greek God Apollo was the most influential among Greek people because of his recognition for music, the truth, and healing powers. Apollo was born on the Greek island of Delios, from his parents Zeus and Leto (Regula)Read Moreâ⬠¢ Dance, whether itââ¬â¢s publicly or privately. â⬠¢ Listen to music that the patients loved listening1200 Words à |à 5 Pagesâ⬠¢ Dance, whether itââ¬â¢s publicly or privately. â⬠¢ Listen to music that the patients loved listening to before. Even if the therapist doesnââ¬â¢t think itââ¬â¢s the best music choice for the goal that day, it most certainly could be because of the familiar memories it brings back to the client. Know that perceptual modifications can change the way patients hear music. If they say it sounds terrible, listen to their judgment and turn it off. â⬠¢ Attend different types of concerts and venues, giving contemplationRead MoreGratitude And Gratitude1708 Words à |à 7 PagesIn this essay will highlight all the areas of study and practice learned in the topics; gratitude, forgiveness, laughter, humor, guided imagery, meditation music with and without lyrics, rhythm, tone, color, chakras, synchronicity, integrative health and integrative healing group sessions. Gratitude can be defined as being grateful about an aspect or several aspects of life. Gratitude is a character that should rather be practiced on a daily routine. It can be very easy to request gratitude theoreticallyRead MoreThe Effect of Music in Students775 Words à |à 3 Pagesââ¬Å"Music is an important and extremely useful tool in the way we learn and to deny its power is a waste of a truly wonderful resourceâ⬠(Kristian David Olson). Many researches have shown that music can have an affect on a variety of different conditions, including; onesââ¬â¢ education, social connection, and mental healing. Educationally, music can prepare your brain for superior achievements. In effect, this can cause a better understanding of mathematics and language skills or abilities. Socially, musicRead MoreEffects of Music on the Mind1350 Words à |à 6 PagesEffects of Music on the Mind The study of how music affects the mind has been a subject of interest for many. The interconnection between music and the physical and mental health of human beings has been researched on since long. Research has concluded that music does have positive effects on our mind. It has the power of healing certain ailments. Indian classical music has been found to have the strongest healing powers. Music has a calming effect on the mind. It is known to speed the recoveryRead MoreEssay about Alternative Methods of Healing: Music Therapy1561 Words à |à 7 PagesAlternative methods of healing have been utilized by non-western medicine for generations. The use of acupuncture to heal everything from seasickness to muscle soreness is well documented and widely used. Physical therapy is often a precursor to surgery and many times will prevent the need to undergo a more invasive procedure. A lesser-known form of alternative healing but becoming more popular is music therapy. In the late 18t h century, scientists began to investigate the effects of music on the human
Wednesday, December 25, 2019
Key Pieces of Film Studies Essay Topics
Key Pieces of Film Studies Essay Topics Film Studies Essay Topics Explained One of the greatest approaches to select your topic is to find one which you get a strong opinion about. Your specific ideas and opinions in the paper has to be supported with arguments. Last word of advice is to seek advice from your teacher before the last decision about this issue selection for argumentative essays. You will have to back up your viewpoint with well-researched facts and data also. The Key to Successful Film Studies Essay Topics The difference is in the intellectual capabilities connected with the age of students, and their levels of exposure. In the modern society, gender means a whole lot more than it used to. You should have your reasons, and our primary concern is that you find yourself getting a great grade. Discover how studies utilize a complicated research library. Whispered Film Studies Essay Topics Secrets Like the custom of oncology nursing, it's an emotionally in add ition to professionally demanding experience. The student may give the particulars of the topics to the firm. So should you need help with any writing task, don't hesitate to get in touch with our expert services. If you are searching for assistance with your essay then we provide a comprehensive writing service given by fully qualified academics in your area of study. By way of example, in college, you might be requested to compose a paper from the opposing standpoint. A review of each major point and concluding thoughts utilizing a rate system, dependent on numbers, will certainly help your film studies paper stick out. The character of the issue selected is important in picking the correct strategy. You might think about history for a branch of study that falls away from the realm of social studies. The distinctive writing assignment suggests that you've studied a variety of films, technical facets, and theories. In reality, a film studies writing assignment provides the chance for an assortment of thoughts and topics. The reality is that a film study writing assignment provides the chance for assorted thoughts and themes. Specifically, you're going to be expected to take thorough notes to analyse the exceptional manners of filming, together with videography. Academic Sciences writers can direct you on each step of the procedure to make certain that you understand how to compose a film studies essay. Most students enjoy watching movies for a number of unique factors. Creating a preliminary structure for the essay before you've finished collecting information is the most helpful. Showing awareness about recent changes in this issue you're writing on is very important to win an excellent grade. You will have to figure out the kind of essay you're going to be writing and which of the aforementioned analytical elements you will include. Apart from that, it also needs to be known that essay is only a wide category and within this, there are several kinds of essays and every one of them have another type of pattern. The very best argumentative essay writing service on the net is an organization that supplies good quality and very affordable help on argumentative essay and argumentative essay topics. Argumentative essay topics cover a w ide selection of subjects, and can be quite persuasive if an excellent essay represents them. Occasionally, selecting an excellent argumentative essay topics will be quite tough. There are several interesting and challenging Shakespeare essay topics to pick from. Therefore, either you wish to learn more about how to compose an essay, or you desire some essay writing services or even in the event that you would like to go through some sample essays, then just refer to WritingBest and all of your requirements will be fulfilled once possible. Both principal kinds are the crucial essay and the theoretical essay. Choosing great essay topics for middle school must be a careful procedure, where a balance must be struck between topics that could be too simplistic, more proper for the main school, and choosing argumentative essay topics that can be too complicated or controversial. Following are a few of the advised sociology essay topic for those students that are unable to decide on a great topic for their assignment.
Tuesday, December 17, 2019
Similarities and Differences between Gilgamesha dn Enkindu
Similarities and Differences between Gilgamesh and Enkindu The Myth known today as the epic of Gilgamesh was considered in ancient times to be one of the great masterpieces of cuneiform literature.The tale revolves around a legendary hero named Gilgamesh, who was known said to be the king of the Sumerian city of uruk.Gilgamesh was known to have supernatural abilities and be half human and half god similar to his best friend who was later known known as Enkindu.This person was also blessed with supernatural abilities and was half human-half animal.Gilgamesh and Enkindu both have similar traits such as they both use love as a motivating force and they both clearly are half human-half supernatural.They also have differences suchâ⬠¦show more contentâ⬠¦Then on page 21 Enkindu stood watch for the shepherds against the lions so that the shepherds could get a good night sleep, this protects the shepherds and feeds them. This shows the power that Enkindu has by fighting of lions, capturing wolves and keeping the shepherds safe. So basically G ilgamesh who is half human and half God, he thinks he is the most powerful person on this Earth and thinks he can do whatever he wants whenever he wants. He takes every woman there is, even the ones that are getting married. Since he is very ignorant and doesnââ¬â¢t care about his people, the people complained to the Gods who then create a double of Gilgamesh who is called Enkindu, who was just as smart and strong as Gilgamesh. Gilgamesh and Enkidu also had differences it seemed that they had their own journey within each otherââ¬â¢s journey. Enkiduââ¬â¢s journey starts of when the prostitutes were order by Gilgamesh to go and get Enkidu. This is because Enkidu saves his former animal friends from cages. This to me to is the starting point of Enkidu journey towards Gilgamesh. This journey was mentored by the prostitute who was also the tempter. As Enkidu finds his way to Gilgamesh this starts a whole new journey.This journey was shortlived because later on as the story goes on Gilgamesh and enkindu goes on and kills both humbaba and the bull of heaven,which the godess Ishtar sends to punish Gilgamesh for spurring her advances.As a punishment for these actions,the gods sentence Enkindu
Monday, December 9, 2019
Internal Combustion Engines Essay Summary Example For Students
Internal Combustion Engines Essay Summary Internal Combustion EnginesIntroductionInternal Combustion Engine, a heat engine in which the fuel is burned (that is, united with oxygen ) within the confining space of the engine itself. This burning process releases large amounts of energy, which are transformedinto work through the mechanism of the engine. This type of engine differentfrom the steam engine, which process with an external combustion engine thatfuel burned apart from the engine. The principal types of internal combustionengine are : reciprocating engine such as Otto-engine, and Diesel engines ; androtary engines, such as the Wankel engine and the Gas-turbine engine. In general, the internal combustion engine has become the means ofpropulsion in the transportation field, with the exception of large shipsrequiring over 4,000 shaft horsepower ( hp). In stationary applications, size of unit and local factor oftendetermine the choice between the use of steam and diesel engine. Diesel powerplants have a distinct economic advantage over steam engine when size of theplant is under about 1,000 hp. However there are many diesel engine plants muchlarge than this. Internal combustion engines are particularly appropriate forseasonal industries, because of the small standby losses with these enginesduring the shutdown period. HistoryThe first experimental internal combustion engine was made by a Dutchastronomer, Christian Huygens, who, in 1680, applied a principle advanced byJean de Hautefeuille in 1678 for drawing water. This principle was based on thefact that the explosion of a small amount of gunpowder in a closed chamberprovided with escape valves would create a vacuum when the gases of combustioncooled. Huygens, using a cylinder containing a piston, was able to move it inthis manner by the external atmospheric pressure. The first commercially practical internal combustion engine was built bya French engineer, ( Jean Joseph ) Etienne Lenoir, about 1859-1860. It usedilluminating gas as fuel. Two years later, Alphonse Beau de Rochas enunciatedthe principles of the four-stroke cycle, but Nickolaus August Otto built thefirst successful engine ( 1876 ) operating on this principle. Reciprocating EngineComponents of EnginesThe essential parts of Otto-cycle and diesel engines are the same. Thecombustion chamber consists of a cylinder, usually fixed, which is closed at oneend and in which a close-fitting piston slides. The in-and-out motion of thepiston varies the volume of the chamber between the inner face of the piston andthe closed end of the cylinder. The outer face of the piston is attached to acrankshaft by a connecting rod. The crankshaft transforms the reciprocatingmotion of the piston into rotary motion. In multi-cylindered engines thecrankshaft has one offset portion, called a crankpin, for each connecting rod,so that the power from each cylinder is applied to the crankshaft at theappropriate point in its rotation. Crankshafts have heavy flywheels andcounterweights, which by their inertia minimize irregularity in the motion ofthe shaft. An engine may have from 1 to as many as 28 cylinders. The fuel supply system of an internal-combustion engine consists of atank, a fuel pump, and a device for vaporizing or atomizing the liquid fuel. InOtto-cycle engines this device is a carburetor. The vaporized fuel in mostmulti-cylindered engines is conveyed to the cylinders through a branched pipecalled the intake manifold and, in many engines, a similar exhaust manifold isprovided to carry off the gases produced by combustion. The fuel is admitted toeach cylinder and the waste gases exhausted through mechanically operated poppetvalves or sleeve valves. The valves are normally held closed by the pressure ofsprings and are opened at the proper time during the operating cycle by cams ona rotating camshaft that is geared to the crankshaft . By the 1980s moresophisticated fuel-injection systems, also used in diesel engines, had largelyreplaced this traditional method of supplying the proper mix of air and fuel;computer-controlled monitoring systems improved fuel economy and reducedpollu tion. IgnitionIn all engines some means of igniting the fuel in the cylinder must beprovided. For example, the ignition system of Otto-cycle engines , the mixtureof air and gasoline vapor delivered to the cylinder from the carburetor and nextoperation is that of igniting the charge by causing a spark to jump the gapbetween the electrodes of a spark plug, which projects through the walls of thecylinder. One electrode is insulated by porcelain or mica; the other is groundedthrough the metal of the plug, and both form the part of the secondary circuitof an induction system. The principal type of high-tension ignition now commonly used is thebattery-and-coil system. The current from the battery flows through the low-tension coil and magnetizes the iron core. When this circuit is opened at thedistributor points by the interrupter cam, a transient high-frequency current isproduced in the primary coil with the assistance of the condenser. This inducesa transient, high-frequency, high-voltage current in the secondary winding. Thissecondary high voltage is needed to cause the spark to jump the gap in the sparkplug. The spark is directed to the proper cylinder to be fired by thedistributor, which connects the secondary coil to the spark plugs in the severalcylinders in their proper firing sequence. The interrupter cam and distributorare driven from the same shaft, the number of breaking points on the interruptercam being the same as the number of cylinders. Cooling SystemBecause of the heat of combustion, all engines must be equipped withsome type of cooling system. Some aircraft and automobile engines, smallstationary engines, and outboard motors for boats are cooled by air. In thissystem the outside surfaces of the cylinder are shaped in a series of radiatingfins with a large area of metal to radiate heat from the cylinder. Other enginesare water-cooled and have their cylinders enclosed in an external water jacket. In automobiles, water is circulated through the jacket by means of a water pumpand cooled by passing through the finned coils of a radiator. Some automobileengines are also air-cooled, and in marine engines sea water is used for cooling. Christopher Columbus EssayThe exhaust gases are then expelled through an exhaust port through the actionof the turning rotor. The cycle takes place alternately at each face of therotor, giving three power strokes for each turn of the rotor. The Wankelengines compact size and consequent lesser weight as compared with the pistonengine gave it increasing value and importance with the rise in gasoline pricesof the 1970s and 80s. In addition, it offers practically vibration-freeoperation, and its mechanical simplicity provides low manufacturing costs. Cooling requirement s are low, and its low center of gravity contributes todriving safety. Gas TurbineAlso called as combustion turbine, engine that employs gas flow as theworking medium by which heat energy is transformed into mechanical energy. Gasis produced in the engine by the combustion of certain fuels. Stationary nozzlesdischarge jets of this gas against the blades of a turbine wheel. The impulseforce of the jets causes the shaft to turn. A simple-cycle gas turbine includesa compressor that pumps compressed air into a combustion chamber. Fuel ingaseous or liquid-spray form is also injected into this chamber, and combustiontakes place there. The combustion products pass from the chamber through thenozzles to the turbine wheel. The spinning wheel drives the compressor and theexternal load, such as an electrical generator. In a turbine or compressor, a row of fixed blades and a correspondingrow of moving blades attached to a rotor is called a stage. Large machinesemploy multistage axial-flow compressors and turbines. In multi-shaftarrangements, the initial turbine stage (or stages) powers the compressor on oneshaft while the later turbine stage (or stages) powers the external load on aseparate shaft. The efficiency of the gas-turbine cycle is limited by the need forcontinuous operation at high temperatures in the combustion chamber and earlyturbine stages. A small, simple-cycle gas turbine may have a relatively lowthermodynamic efficiency, comparable to a conventional gasoline engine. Advancesin heat-resistant materials, protective coatings, and cooling arrangements havemade possible large units with simple-cycle efficiencies of 34 percent or higher. The efficiency of gas-turbine cycles can be enhanced by the use ofauxiliary equipment such as inter-coolers, regenerators, and reheaters. Thesedevices are expensive, however, and economic considerations usually precludetheir use. In a combined-cycle power plant, the considerable heat remaining in thegas turbine exhaust is directed to a boiler called a heat-recovery steamgenerator. The heat so recovered is used to raise steam for an associated steamturbine. The combined output is approximately 50 percent greater than that ofthe gas turbine alone. Combined cycles with thermal efficiency of 52 percent andhigher are being put into service. Gas turbines have been applied to thepropulsion of ships and railroad locomotives. A modified form of gas turbine,the turbojet, is used for airplane propulsion. Heavy-duty gas turbines in bothsimple and combined cycles have become important for large-scale generation ofelectricity. Unit ratings in excess of 200 megawatts (MW) are available. Thecombined-cycle output can exceed 300 MW. The usual fuels used in gas turbines are natural gas and liquids such askerosene and diesel oil. Coal can be used after conversion to gas in a separategasifier. Internal-Combustion Engines and Air PollutionAir pollution from automobile engines ( smog ) was first detected about1942 in Los Angeles, CA. Smog arises from sunlight-induced photochemicalreactions between nitrogen dioxide and the several hundred hydrocarbons in theatmosphere. Undesirable products of the reactions include ozone, aldehydes, andperoxyacylnitrates ( PAN ). These are highly oxidizing in nature and cause eyeand throat irritation. Visibility-decreasing nitrogen dioxide and aerosols arealso formed. Five categories of air pollutants and percent contribution from alltransportation source and the highway vehicle subset are show in Table -1. Virtually all of the transportation CO, about half the hydrocarbons, and aboutone-third of the nitrogen oxides come from gasoline engines. Diesel enginesaccount for the particulate. Emissions from internal-combustion engines include those from blowby,evaporation, and exhaust. These can vary considerably in amount and compositiondepending on engine type, design, and condition, fuel-system type, fuelvolatility, and engine operating point. For an automobile without emissioncontrol it is estimated that of the hydrocarbon emission, 20 to 25 percent arisefrom blowby, 60 percent from the exhaust, and the balance from evaporativelosses primarily from the fuel tank and to a lesser extent from the carburetor. All other non-hydrocarbon emissions emanate from the exhaust. At least 200 hydrocarbon (HC) compounds have been identified in exhaust. Some such as the olefin compounds react products. These are termed reactivehydrocarbons. Others such as the paraffin are virtually unreactive. Special DevelopmentsThe Stratified-Charge Engine a modification of the conventional spark-ignition piston engine, the stratified charge engine is designed to reduceemissions without the need for an exhaust-gas recirculation system or catalyticconverter. Its key feature is a dual combustion chamber for each cylinder, witha prechamber that receives a rich fuel-air mixture while the main chamber ischarged with a very lean mixture. The spark ignites the rich mixture that inturn ignites the lean main mixture. The resulting peak temperature is low enoughto inhibit the formation of nitrogen oxides, and the mean temperature issufficiently high to limit emissions of carbon monoxide and hydrocarbon. Two rather distinct means for accomplishing the stratified chargecondition are under consideration :1. A single combustion chamber with a well-controlled rotating airmotion. This arrangement is illustrated (Fig.6) by the Texaco Combustion Process(TCP), patented in 1949. 2. A prechamber or two-chamber system. This is illustrated by Fig.7,which shows the general arrangement of the Honda Compound-vortex controlled-combustion (CVCC) system. For both systems, very careful development has proved to be necessary toobtain complete combustion of the fuel under the wide range of speed and loadconditions required of an automotive engine. English
Sunday, December 1, 2019
The Role Of Technology Essay Research Paper free essay sample
The Role Of Technology Essay, Research Paper Man is still the most extraordinary computing machine of all. John F. Kennedy Speech, May 21, 1963 As we look back in retrospect, civilisation has evolved greatly from coevals to coevals. Our promotion has been entirely dependent on one factor, the human head. The human head has brought us from the bondages of Neanderthal epoch to today s modern age. It has brought us legion of comfortss that are every bit simple as a cock to every bit sophisticated as the personal computing machine. These creative activities have multiplied exponentially and have been the crutch for our society. The anxiousness of Y2k exemplifies the magnitude in which we rely on these machines we have created. The quandary in which the development of engineering brings is a simple inquiry: To what extent should these machines govern our lives? This medium is the important reply to future endurance of our being. We will write a custom essay sample on The Role Of Technology Essay Research Paper or any similar topic specifically for you Do Not WasteYour Time HIRE WRITER Only 13.90 / page If we look back to a small over two centuries ago in our universe, engineering was non every bit outstanding as it is now. A twenty-four hours in which the Equus caballus cart broke did non greatly affect day-to-day life for people in that clip period. On the other manus, conceive of a twenty-four hours when electricity stops. Airports would be shut down, communicating failures, concern loss, and etc. Recently an temblor hit the state of Taiwan, where a bulk of the semiconducting material industry is located. During the temblor with a Richter graduated table of 7.4, many of the mills halted production on computing machine french friess. In the one of two yearss the workss were shut down, stocks associating to the computing machine industry plummeted. Dell Computer announced that its 3rd one-fourth net incomes would be lower than outlooks, Gateway portions dropped, and the harm went down the concatenation to companies that were related to the computing machine industry. If the craze o ver Y2k is accurate, we will see in first manus, the appreciation in which engineering has on our society. I have observed that a popular secret plan in sci-fi novels is the impression that someday in the hereafter, computing machines will regulate our lives and we will go slaves to them. The Terminator film series is a authoritative illustration that uses this secret plan. One must inquire himself if this fiction has become a world for worlds. Weapons of mass devastation were a changeless fright for all citizens during the Cold War and are still a menace to us. Reading about the Oklahoma City bombardment, the Columbine shots, the recent Xerox shots, and so forth makes me inquire if we have become slaves to our creative activities. To happen the medium in which we can equilibrate engineering with our lives, we must understand the differences and analogues that computing machines portion with us. An evident disparity is that computers/machines do non posses the ground and intuition that a human encephalon contains. Descartes foresaw this differentiation and grounds as follows: For whereas ground is a univeral instrument which can be used in all sorts of state of affairss, these variety meats [ of animate beings, like mechanisms in general ] need some peculiar temperament for each peculiar action ; hence it is for all practical intents impossible for a machine to hold adequate different variety meats to do it move in all eventualities of life in the manner in which our grounds makes us move. ( Descartes 1637, p.140 ) Descartes continues, even though such machines might make [ or state ] some things every bit good as we do them, or possibly even better, they would necessarily neglect in others, which would uncover that they were moving non through understanding but merely from the temperament of their variety meats. There is a common misconception that computing machines are perfect in their several maps and that they are the solution to the erroneous human being. Therefore, we trust it with all of our day-to-day responsibilities. Many continue to believe that since computing machines appear to be perfect and that we trust it with all our responsibilities, finally computing machines are smarter than worlds and someday may assist us carry through all of our undertakings. We have been fascinated by the capablenesss of the new cheat title-holder, Artificial Intelligence. The fact of the affair is that Artificial Intelligence can be flawed merely like worlds can be. The Chinese Room Argument proposed by John Searle gives us a glance to the abilities of AI. The experiment requires puting individual in a room with a clump of Chinese Hagiographas. Based on the batches of direction they give you are required to decode the Chinese characters. This carbon monoxide rrelation is evidently impossible to most existences and one of Searle s decisions is: If he doesn t understand so there is no manner the system could understand because the system is merely portion of him. Behind every computing machine system or package lays a plan or codification that was created by a human being. Therefore if you believe that worlds are erroneous, so the plans created would be besides flawed sharing a analogue between machines and worlds. In order to find whether to choose the consequences from the computing machine or the ace sawbones as given in the scenario, the benefits and disadvantages of computing machines must be underlined foremost. In the paragraphs above, I have tried to happen grounds to confute the impression that computers/machines are unflawed. However, computing machines can go a great complement to our day-to-day undertakings. The quandary we face is how much or how small we should trust on engineering before it controls us. The medium is simple ; blend the best of what worlds may offer such as the flexibleness of our heads with the increased truth and efficiency of the computing machine. In this given scenario, the computing machine that predicts the possibilities of a bosom onslaught should be viewed as a 2nd sentiment. Each bosom onslaught instance varies from patient to patient, computing machines may be accurate most of the clip but on the rare occasions it may besides be incorrect. Merely a phys ician would be able to take in history particular conditions such as a rare bosom status or a phenomenon that was neer discovered. The computing machine on the other manus would either give a false end product or syntax mistake. With the benefits of a physician and the computing machine as a 2nd sentiment, the patient would so be able to do an informed determination. However, if we become wooed by the computing machine s ability to do these anticipations and hope to replace physicians someday with these devices, we so cross the thin ruddy line from utilizing it as a tool to trusting on it. Promotions in the medical field have made medical specialty pattern today, more efficient and accurate. Inventions such as the X ray have become tools or nurses for physicians. Yet with these comfortss, most physicians do non trust entirely on generated informations but besides their experience and cognition learnt making a balance between adult male and engineering. Most resistance on this affair will reason on the virtue of a few points. First and first, cost efficiency ; if we are able to change over computing machines into physicians someday imagine the reduced cost of medical advice. There would be an obvious demand for these devices and therefore driving down the monetary values for medical attending. Peoples from all fiscal backgrounds would eventually be able to afford some kind of medical advice since surgery and advice presents have become extortionate in their costs. Second, this new signifier of medical specialty is clip efficient every bit good. Alternatively of leaping from physician to sophisticate for secondary sentiment, one computing machine will bring forth the same consequence as the other devices. Third, the computing machine may be able to give a more accurate diagnosing a individual physician today without the 2nd sentiments. However, there are many ethical issues that are involved in this state of affairs. Computers will n on be able to observe any new signifiers of diseases or rare conditions therefore giving many lives. My attack to this quandary from the article in the New Yorker is straightforward. I would take into consideration what the physician informs me of and besides the statistical informations compiled by the computing machine. However, I would non trust entirely on the computing machine but besides 2nd sentiments from other heart specialists besides the primary 1. Statistically wise, if I sought out three physicians and all three said I was all right and healthy. I would take their word for it and overruling the consequence generated by the computing machine. However, if the other two physicians agreed with the computing machine my obvious pick would be to understand that a bosom onslaught might happen. The most critical component I believe in this quandary is non to trust on engineering itself. The head is far more complex than computing machine french friess that were made by worlds. If the gift of our head were compromised, so they would be apparently no demand for them. Where there is the necessary proficient accomplishment to travel mountains, there is no demand for the religion that moves mountains. Eric Hoffer Man must understand its function with engineering before any continual patterned advance or else the sci-fi books we read may someday go a world.
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