Cell Phone Use in Schools Free Essays

Cell Phone Use in Schools. With all the innovation in the last decade, cell phones have become apart of daily life for people all over the world between using cell phones to contacts family and friends to playing a little game of bejeweled. But what many schools are considering, is allowing the use of cell phones in schools. We will write a custom essay sample on Cell Phone Use in Schools or any similar topic only for you Order Now Cell phones can offer as a learning tool to students. Also, cell phone use in class brings some harm to the classroom. In addition, Policies about cellular devices have altered in schools across the U. S. A critical issue affecting many is allowing or banning cell phone use among students. Cell phones offer as an easy, accessible learning tool that most students already have. Besides a convenient tool for students, cell phones make it easier on teachers. Teachers can create a class blog for students to communicate or debate on issues from class (Rogers). This class blog gives them the ability to constantly have access to talk to their classmates via web from home, the classroom, and potentially anywhere (Rogers). The teacher can monitor the class blog at her convenience as well, not just in a classroom setting (Rogers). Also, way a cell phone may be used in a classroom setting as a research tool. Students can search for background information on subjects. Rather than looking for words in a dictionary or spending time in the library looking for that book, all the information a student could possibly need is at the tip of his/her fingertips. Lastly, teachers and administrators can set up polls using websites like wiffiti. om or polleverywhere. com enable students to answer polls anytime, anywhere (Engel and Green). Teachers and administrators can set up polls for a class, a certain grade, or something that involves the entire school. Now it’s easier for students to be involved with issues on campus and have on say about the decisions or changes being made about their school (Engel and Green). Overall, the endless benefits of cell phone use for students will provides unlimited learning tools. Throughout the U. S. many schools have cell phone policies specific to their high school but many schools are changing the policies. Many schools across the board have become more lenient in allowing cell phone for students in the classroom or on campus. At Dickison High School, like many other high schools, their policy has been lifted and allows students to use phones during lunch (Wishmayer). Lifting the policy was intended to give the high schoolers enough freedom so less texting and calling would take place during class (Wishmayer). Although cell phones include disadvantages such as being a distraction to students or being used to cheat on assignments, with the help of schoolteachers and administrators, strategies of preventing abuse of cell phones can be enforced among students. One solution to cell phones abuse is making the phones visible to the teachers (Ferriter). Most teachers and professors worry about sneaky students texting answers to other students. William Ferriter says his solution is, â€Å"†¦require students to place their cell phones on the top right-hand corner of their desks when they come into class. That way you will know if someone is texting or calling a friend when they’re supposed to be learning. † Secondly, teachers should holds kids accountable and force them to act responsible (Ferriter). Talking about responsibility and accountability will not get to the rebel sitting in the back corner or kid that attends class once every two weeks but some of the kids will be understanding and aware of the choices they are making. Using threats of banning cell phones is not the right approach and will probably be ignored anyways. Lastly, unless school policies state otherwise, if a student is not using his or her cell phone appropriately, the teacher may confiscate the phone until the end of the class period or even day. For violating dress code, students receive punishments of some sort. If breaking the rules of dress code has a punishment, cell phone policies should be able to have punishments for cell phone abuse. With all the advanced in the last few years, cell phones have become a major apart of every day life for people across the United States. Firstly, cell phones may provide as a learning tool with the endless resources. On the other hand, cellular telephones can distract students and could be used as a way of cheating. In addition, policies about cellular devices have altered in schools across the U. S. Lastly, there’s ways to prevent abuse of cell phones with help and support of faculty. In order to make a decision in being for or against cell phones, schools must weigh the benefits and harms of cell use of students and find a solution with the best interest of the school. How to cite Cell Phone Use in Schools, Papers

LASIK Surgery Essay Example For Students

LASIK Surgery Essay Seeing well without contact lenses and glasses is the dream of millions of Americans and modern medical science has enabled that dream to come true (Caster, 8). Since first grade, Dede Head, a 30-year-old fitness trainer in North Carolina, has worn glasses to correct sever nearsightedness and astigmatism. Over the years she became accustomed to wearing glasses and contacts, but this has limited many important aspects of her life, including sports. She then heard of a laser eye surgery that ?supposedly?, helped to correct a persons vision by means of lasers. She immediately signed up for the procedure and ever since that day, she has not worn glasses or contacts. Dede is just one of the eight hundred-fifty-thousand people who have undergone a procedure by the name of LASIK or Laser In-Situ Keratomileusis. If surgical procedures were movies, LASIK would be this years box office smash as it has received much media coverage and many praises; however, not that many people know what LASIK is, what the advantages and disadvantages are, and most importantly if LASIK is right for them (Buratto, 1). LASIK is basically a type of laser surgery which can help correct nearsightedness (myopia), which is the inability to see distant objects, farsightnedness (hyperopia), which is the inability to see close, and astigmatism, the inability to focus light waves evenly. LASIK has grown greatly in the last year, mostly because of 4 reasons; it is fast (procedure takes about 5-10 minutes), safe, painless, and the results are almost always prolific. The eye is just like a camera because it works by focusing light waves that pass through it. Light rays that enter the eye must first pass through the most outer layer of the eye called the cornea. The cornea performs 2/3 of the focusing process, the remainder of is then completed by the crystalline lens which further focuses the light on the retina. This requires extreme precision in that the focused light must fall exactly at the level of the retina (Gallo, 126). The retina is a nerve tissue that carpets the inner surface of the eye, much like wallpaper covers all aspects of a wall. The retina converts the light into electrical signals, which are transmitted to the brain by the optic nerve. Just as a camera cannot produce clear photographs of the image if the incoming light is not focused on the film, we cannot produce a clear vision if the cornea and crystalline lens do not focus the light precisely on the retina. This is where LASIK steps in. A laser is a device that creates a very special kind of light energy that is usually invisible to the human eye (Caster, 16). In LASIK, ophthalmologists use a certain type of laser called the excimer. By using invisible ultraviolet light, the excimer is able to break covalent bonds between molecules. What sets excimer aside from other lasers used in medicine is the wavelength used. At one-hundred ninety-three nm (nanometers), excimer lasers remove tissue by breaking the covalent without creating much thermal energy (Slade, 25). This allows for precise removal of tissue with minimal surrounding tissue damage. The very thin layer of the cornea that is removed, changes the curvature of the cornea ever so slightly, thus then results in a change in the light focusing ability. In nearsightedness (myopia), light rays from distant objects are not focused on the retina, but instead they are focused in front of the retina (See Figure 1). Therefore to correct nearsightedness in a LASIK procedur e, the curvature of the cornea must be decreased or in another words made flatter by removing corneal tissue in a disc-shaped pattern, or from the central cornea. A computer determines the exact pattern and number of pulses that are needed to do this. In farsightedness (hyperopia), light rays from distant objects are focused not onto the retina, but behind it (See Figure 1). To correct this, the central portion of the cornea must be made steeper; and this is accomplished by removing corneal tissue in a donut shaped pattern, or in another words more from the peripheral areas. Eyes with astigmatisms focus light waves unevenly because of the irregular shape of the cornea; football shaped as opposed to the usual round, basketball shaped corneas. The excimer laser can remove corneal tissue asymmetrically, and so the end result is a round, symmetrical surface (Sloat, 90). LASIK, did not just develop suddenly overnight in some ophthalmologists mind; however, LASIK is part of an evolved procedure (Gallo, 127). Todays vision correction revolution dates back decades through the sheer genius, persistence, and ingenuity of Professor Jose Barraquer (Slade, 8). Refractive surgery, which is the type of surgery LASIK is characterized as, started in Bogota, Columbia in 1948 when Barraquer started performing a procedure called Freeze Keratomileusis. This procedure involved adding a disc of corneal tissue (donated from another person) with a predetermined curvature in the cornea giving it structure. In a journal found 2 decades after this procedure, it stated that patients who had myopia could see better after the procedure; however he stated a few months after the surgery, that some patients would lose their eyesight due to infection. The reason for this was that Barraquer used an unsterilized shaver to cut the cornea. It was not until the late 1970s that refract ive surgery resurfaced when US surgeons visited the Soviet Union. The surgeons brought back a procedure called Radial Keratotomy (RK) which made spokelike incisions in the cornea by using a handheld diamond scalpel. The results were good, but scientists noticed that the incisions structurally weakened the eye. Scientists and doctors worked for 2 decades to develop Radial Keratotomy into a procedure that was both safe and produced good results. Then in 1994, a company by the name of Summit Technologies developed the first excimer laser that could be used for surgery. A year after, the Food and Drug Administration (FDA) approved this excimer laser and stated that it could only be used to correct mild nearsightedness in a procedure called Photorefractive Keratectomy (PK). In PRK, surgeons scrape away the very outer layer of the cornea (less than 5% thickness of the entire cornea) and then use the excimer laser to vaporize the underlying corneal tissue to a predetermined depth (no more than fifty percent thickness of the cornea). These results were very good as 90 percent of the cases showed that the patients achieved at least 20/40 vision, which is the usual standard to pass a drivers license test; however, the surgery had many drawbacks.While the procedure itself was not painful, patients had significant pain and discomfort for almost a week after the surgery (Gallo, 129). Worst of all, it often took a week to even see anything and six months to get the full benefits of the surgery (Gallo, 129). Dr. Stephen Slade, a refractive surgeon, summarized the procedure well by saying, ?PRK works well, but it hurts and the results take too long. To be honest, patients dont like it.? Soon after PRK was introduced, surgeons began testing a procedure called Laser In-Situ Keratomileusis, which was first partially introduced by the father of ophthalmology, Barraquer in 1950 (Slade, 8). Keratomileusis is derived from the Greek root keras (horn-like cornea) and mileusis (carving ) and basically it is a procedure that involves slicing and peeling back the outer layer of the cornea (anterior cornea), leaving a hinge on one side, while the laser sculpts the tissue underneath (corneal stroma). After the excimer laser is done, the flap is placed back to where it was before, and no stitches are needed because the corneal flap heals by itself when left to dry. You are probably wondering if they still used the diamond scalpel, and the answer thankfully is not. Surgeons use a very precise instrument called the microkeratome (See Figure 3) which makes LASIK very unique compared to other surgeries. This device is a mechanical shaver that has a sharp blade, which moves back and forth at very high speeds (See figure 2). After a suction ring has been placed on the cornea, the microkeratome is place on top of the cornea and advances across it at very small increments creating a flap that is only 1/3 inch in diameter. This instrument cuts the cornea at a uniform thickness and creates a portion of the cornea uncut. After the suction ring and the microkeratome have been removed, the corneal flap is folded back (See Figure 4), exposing the middle portion of the cornea. Also in LASIK surgery, the excimer laser can be used at different frequencies and therefore produce different desired results in the same patient. Each laser pulse in a LASIK procedure removes ten-millionths of an inch of corneal tissue in twelve-billionths of a second while in a PRK procedure, the laser removes about twice as much in about the same time. The amount of corneal tissue removed depends on how nearsighted or farsighted the patient is (Gorman, 60). The more nearsighted a patient is the more tissue must be removed to obtain a flatter cornea, and the same goes with farsightedness, except the cornea has to be made steeper. The growth of Bitcoin EssayLittle research is available on LASIKs long-term safety and effectiveness, but there is information available on PRK. Last year, a review in ophthalmology traced eighty-three British patients who underwent PRK in 1990, and found no serious complications in any of them. This is attributed to the amount of untouched, deep cornea (approximately fifty percent of the entire cornea), which maintains the eyes original overall shape. This is opposite of RK which left only 10% of the untouched cornea (Voelker, 1494). Despite its increasing popularity, LASIK is not for everyone. People with extra-thin corneas are not good candidates of this surgery because the surgeon does not have enough tissue to work with. Ophthalmologists also turn away people who have rheumatoid arthritis and diabetes because they have problems with dry eyes, and are hence poor healers. As people approach forty years old, they begin to lose the ability to change their focus from far to near (presbyopia), but dont worry, it is natural in everyone. Baby boomers who have LASIK to try to correct presbyopia, usually trade their distance glasses in for reading glasses (or vice versa). Surgeons are now answering this problem with ?mono-vision?, which is correcting one eye for far distance and the other for focusing on close distances. After this procedure, the brain adapts, using each eye for different functions; however, patients often experience blurry midrange vision and have depth perception problems. ?Most patients dont mind it , but it drives some people nuts,? says Dr. Slade. ?There is a revolution happening in vision correction,? says Dr. Guy Kezirian, a refractive surgeon in Arizona, and spokesman for the International Society of Refractive Surgery. ?Were seeing a stampede of people interested in a surgical alternative.? The question I ask is, why not? Glasses can be very inconvenient, and contacts can be a hassle, so why not venture in this vast, growing field of LASIK? LASIK is not just an eye operation anymore, it is a 2 billion dollar a year industry that has revolutionized the way surgery is looked at. Usually costing two thousand dollars per eye, LASIK is not a surgery that anyone can afford, especially since it is not covered by insurance. Yet when asked, a LASIK patient consistently states that the surgery was one, if not the, best thing which they have ever done for themselves: no worries of sleeping with contact lenses and contracting a sight threatening infection (Slade, 254). No fear of scuba diving or swimming with contacts, and no fear of waking up 3 a.m. after having heard noises downstairs, and not being able to find your glasses. LASIK surgery gave Diane, a forty-five-year-old doctor assistant, a newfound sense of freedom. Before the surgery, she couldnt clearly see her feet when she was in the shower, but now after LASIK, she is taking rock-climbing lessons with her twelve-year-old daughter; something she would have never done if she were wearing glasses or contacts. Stories like this are becoming common as Americans flock to eye doctors at record rates for this ?surgical fix?. LASIK is blossoming like a flower in the Fertile Crescent and soon everybody will be taking advantage of its wondrous gift that it provides; the gift of sight.

Symbolism Used in Poker Flat Essay Example

Symbolism Used in Poker Flat Paper Human societies all across the world follow a set of beliefs which influence their attitude and thinking. There are certain values which are honored and followed by the members of these human societies. Among these values, the value of virtue and purity is considered to be most important for the welfare of the society. The significance attached to virtuous behavior and purity in human society is depicted in the short story â€Å"The Outcasts of Poker Flat† by Bret Harte. The story follows the journey of four outcasts who are exiled from their community named Poker Flat. Although these four outcasts are expelled from their community for failing to follow the values of virtue and purity, they display their virtuous qualities in the course of their journey when they seek to protect a young couple of lovers. Through the element of symbolism, the author brings forth the mistaken notion of virtue held by the people in the community of Poke Flat. Symbolism People regard that virtuous behavior is the most important factor which influences the welfare of a human society. If the members in a particular society are virtuous, then the peace and harmony in the society is maintained. But if some of the members of the society indulge in immoral behavior, then the peace of the society can be threatened. It is this thinking that induces the people of the town in the story â€Å"The Outcasts of Poker Flat†, to banish four individuals, who are thought to be indulging in immoral activities, from Poker Flat. These four individuals are John Oakhurst, The Duchess, Mother Shipton and Uncle Billy. We will write a custom essay sample on Symbolism Used in Poker Flat specifically for you for only $16.38 $13.9/page Order now We will write a custom essay sample on Symbolism Used in Poker Flat specifically for you FOR ONLY $16.38 $13.9/page Hire Writer We will write a custom essay sample on Symbolism Used in Poker Flat specifically for you FOR ONLY $16.38 $13.9/page Hire Writer John Oakhurst was a gambler whereas Uncle Bill was a drunkard, who was also doubted of being a robber. Mother Shipton owned a brothel while The Duchess worked as a saloon girl. The people of the town desired to deport immoral persons living amongst them hoping that the town will flourish after the departure of such people. â€Å"A secret committee had determined to rid the town of all improper persons. † (Harte 23). These four people were judged by the society as immoral persons so the people of the town ordered them to leave the town. After being exiled from their town, the four people embark on a journey to reach another camp which was less respectable compared to the Poker Flat. In course of their journey, they decide to halt at a place to take rest, where they are joined by Tom Simson and Piney Woods, young lovers who have eloped from their homes. Owing to a snowstorm and stealing of mules by Uncle Billy, all of them are forced to stay in a cabin discovered by Simson. It is during their stay in the cabin, that the virtuous qualities of the four outcasts are revealed. Although the outcasts behaved in a manner which was unacceptable to their society, they strove hard to protect the lives of the young lovers. Being at the mercy of nature, the outcasts struggled to keep them alive with the aid of the rations available in the cabin. Mother Shipton sacrifices her life to save Piney by leaving her rations for Piney. â€Å"It contained Mother Shiptons rations for the last week, untouched. â€Å"Give em to the child,† she said, pointing to the sleeping Piney. † (Harte 30). By giving her life for the sake of saving Piney, Mother Shipton reveals her virtuous quality. The same virtuous quality of the outcasts is presented in the story when Piney and The Duchess hold each other and sleep peacefully. The snow covers them and the author describes this happening in a manner which represents the purity of The Duchess and Piney. â€Å"Feathery drifts of snow, shaken from the long pine boughs, flew like white-winged birds, and settled about them as they slept. † (Harte 31). The white-winged birds are symbolic of virtue and purity. In their death, Piney and The Duchess looked so peaceful that it was hard to point out who was the sinner and who was innocent. â€Å"And when pitying fingers brushed the snow from their wan faces, you could scarcely have told from the equal peace that dwelt upon them which was she that had sinned. † (Harte 32). The snow washed away all the sins of the outcasts. Through the symbolism in the story, the author brings forth the virtues of the outcasts who were exiled from their community for improper behavior. The snowstorm aids in revealing the virtues of the outcasts and the snow expunges the distinction between the sinner and the innocent. The snow in the story is symbolic of the purity of the outcasts. Conclusion The story â€Å"The Outcasts of Poker Flat† by Bret Harte depicts the journey of the four outcasts who are considered to be improper individuals by the people of the town. But their virtuous qualities are revealed when in course of their journey, they make every effort to save the lives of young lovers. Being held back in their journey by the snowstorm, the outcasts and the lovers stay in a cabin surviving on the rations available there. One of the outcasts, Mother Shipton sacrifices her life to save Piney from death. Her sacrifice brings forth her virtue which was overlooked by the people of the town. Similarly, the virtue of The Duchess is exposed when in death she looks similar to the Piney who was pure and innocent. The snow in the story is a symbol which represents the purity and virtue of the outcasts. Works Cited Harte, Bret. Selected Stories of Bret Harte. BiblioBazaar LLC. 2006.

Government Expenditure essayEssay Writing Service

Government Expenditure essayEssay Writing Service Government Expenditure essay Government Expenditure essayToday, the problem of the high government spending raises the debate over the possible reduction of the government spending that will stimulate the economic growth of the US. However, the government spending tends to increase rather than decrease and this trend is likely to persist. In such a situation, it is important to understand the main items comprising the core of the government spending today.The government expenditure is the subject to the public debate because the government spending is one of the primary concerns in the time of the economic downturn, while cuts in the government spending affect a large part of the population. At the same time, in spite of economic problems and policies conducted by the government, the government spending tends to increase in the US. At this point, it is possible to refer to the article â€Å"What Is Driving Growth in Government Spending?† by Nate Silver, where the author explores the historical change of t he government spending and reveals major trends in the government spending and how it affects the US economy and society.In fact, the author of the article provides the detailed analysis of the development of the government spending and stresses key changes that occur in this field in the US. In this regard, it is worth mentioning key findings of the author. First, the government spending on the defense comprised over 40% as share of GDP and comprised the lion share of the total government spending not only during World War II but also after the war.However, in the course of time, the government spending has shifted toward the higher spending on social welfare programs and entitlement programs. The author places emphasis on the fact the government spending on the entitlement programs comprised the larger part of the total government spending by 2010. At the same time, the author points out that the government debt and interests on the national debt remain low. At first glance, such a trend is paradoxical, because the national debt keeps growing but the author explains the low costs of interests on the national debt for the federal budget by the fact that borrowed money and interest rates are cheap borrowings. Therefore, it is possible to trace three major trends: 1) the cut of spending on defense; 2) the growth of the government spending on entitlement programs; 3) the low costs of interest rates that makes the public debt a cheap instrument to cover the budget deficit.Eventually, Silver arrives to the conclusion that the growing spending on entitlement programs may become too costly for the US government, while Americans will take the government spending on diverse social programs for granted. As a result, Silver compares the federal government to insurance brokers, who takes risks and covers health care and other costs of their clients, who do not even care about them.However, some points made by Silver in the article are debatable/many researchers () disagr ee that the public debt is as attractive as Silver believes. In fact, the public debt is still the costly instrument because the government will have to serve the debt in a long run. As a result, the growth of the public debt will still increase the government spending on interest on the public debt. Many researchers () insist that if the public debt keeps growing, it will become the unbearable burden for the federal budget.At the same time, I believe that the growth of spending on entitlement programs is a very important trend but it is not necessary as negative as Siler believes. To put it more precisely, the government spending on entitlement programs means the funding of health care programs, educational programs and other entitlement programs. If the government cuts abruptly costs spent on these programs, a large part of the population will be unable to cover those costs that may have disastrous effects putting many people on the edge of survival. Moreover, another effect of th e possible cut of the government spending on entitlement programs will be the reduction of revenues of businesses and organizations that rely on the government funding. For example, health care organizations will have to cut their services provided for the population covered by welfare programs sponsored by the government. As a result, the cut of the government spending on entitlement programs may trigger the deterioration of the socioeconomic situation in the US and, more important provoke the large scale social conflict.Thus, the government spending tends to increase today basically due to the growth of entitlement programs. Silver warns that this trend may have negative effects on the US economy and society in a long run. In this regard, the reduction of spending on defense and infrastructure remain almost unnoticed by the author, who considers that such reduction is not significant and disastrous. However, the conclusion of the author that the rise of the government spending on entitlement programs is negative is questionable because, otherwise, i.e. in case of cuts of the government spending on entitlement programs, the US may face the profound socioeconomic crisis.

Using Forest Fire Weather to Prevent Forest Fires.

Using Forest Fire Weather to Prevent Forest Fires. Predicting Wildfire Behavior Using Weather Data Predicting wildfire behavior is as much an art as it is a science and very much based on understanding weather conditions that influence wildfire. Even seasoned firefighters have trouble reading fire behavior and in predicting a forest fires potential threat to property and lives. One tool at a fire bosses disposal is USDA Forest Services Wildland Fire Assessment System. Wildland Fire Assessment System Daily bits of information are compiled at 1,500 weather stations throughout the United States and Alaska. The values of this data are used in assessing current wildfire conditions and you can find valuable information on the Internet. Every incident command center should have an  Internet connection to these sites. USDA Forest Services Wildland Fire Assessment System provides the support and supplies fire weather and mapping sources. Fire Danger Maps A fire danger rating map is developed using current and historical weather and fuel data. These data are transferred to models to give present condition information and also predicts what may happen tomorrow. Maps are developed to give a visual presentation of the potential danger of fire in a particular region. Fire Weather Observations and Next Day Forecasts Observation maps are developed from the fire weather network. The latest observations include the 10 minute average wind, the 24-hour rain total, the temperature, the relative humidity, and the dew point. There are next day forecasts displayed as maps as well. Live Fuel Moisture/Greenness Maps A fuel moisture index is a tool that is widely used to understand the fire potential for locations across the country. Fuel moisture is a measure of the amount of water in a fuel (vegetation) available to a  fire  and is expressed as a percent of the dry weight of that specific fuel. Living fuels  play a major part in the potential of fire. Vegetative Greenness is a major determinant and predictor of fire spread. The greener the vegetation, the lower the fire potential. This map depicts the green you would expect to see from the air. Dead Fuel Moisture Fire potential is heavily dependent on dead fuel moisture  in forest fuels. There are four classes of dead fuel moisture - 10-hour, 100-hour, 1000-hour. When you have a drying of 1000-hour fuels, you have major potential for fire problems until a general soaking occurs. Wildfire Drought Maps There are several maps that depict drought as determined by measuring soil and duff moisture. The Keetch-Byram Drought Index measures soil capacity to absorb water. Another index is the Palmer Drought Index which is linked to the National Climate Center Regional and updated weekly. Atmospheric Stability Maps The stability term is derived from the temperature difference at two-atmosphere levels. The moisture term is derived from the dew point depression at a single atmosphere level. This Haines Index has been shown to be correlated with large fire growth on initiating and existing fires where surface winds do not dominate fire behavior.

Paper based on instruction (READ CAREFULLY) Essay

Paper based on instruction (READ CAREFULLY) - Essay Example The first piece is a book written by Naomi Wolf entitled â€Å"The Beauty Myth.† The book gained significant amount of popularity after it was published in 1991. It discusses the backlashes of feminism. Wolf states, â€Å"The contemporary backlash is so violent because the ideology of beauty is the last one remaining of the old feminine ideologies that still has the power to control†¦Ã¢â‚¬  (Wolf, 1991, p.487). Wolf claims that society has set a standard about beauty that still holds women imprisoned up to this age. In Alex Pham’s article entitled â€Å"Boy, You Fight Like a Girl,† the author describes the current trend of online gamers who play characters representing the opposite gender. He describes that such trend provides an opportunity to experiment the crossing of genders. These two pieces of information will be analyzed in order to come up with an insight regarding how women are still trapped in the issue of physical looks in both the eyes of femal es and males. Claims Both authors claims that there is still an issue regarding the perception of society on women. Wolf claims that after the supposedly triumph of feminist groups in 1970s, women were able to acquire a certain form of equality with men that allowed them to â€Å" gain(ed) legal and reproductive rights, pursue(ed) higher education, enter(ed) the trades and the professions, and overturn(ed) ancient and revered beliefs about their social role† (Wolf, 1991, p.486). However, Wolf states that despite these seeming freedom and newly founded rights, women did not truly feel so free after all. She claims this statement two decades after the triumph of feminism. It is said that after breaking through the power structure that had once been oppressive to women, â€Å"the more strictly and heavily and cruelly images of female beauty have come to weigh upon us† (Wolf, 1991, p.486). Accordingly, one could look at Pham’s article where he states, â€Å"Female characters generally get treated better in the male-dominated world of virtual adventuring† (Pham, 2001). This may sound like something good coming from men. However, Pham also states that if someone uses a female character, they â€Å"must constantly brush off unwanted advances, and their female characters are not taken as seriously† (Pham, 2001). It does not sound so good after all. These statements clearly say that there is something wrong about society’s perception of the female gender. Approaches Wolf is known as an advocate of the modern day feminists. Her book would have made a strong impact had it not targeted only those who have a strong feminist side. Wolf sometimes uses statements that may be deemed abrasive by the rest of the audience. For example, Wolf states â€Å"The affluent, educated, liberated women of the First World, who can enjoy freedoms unavailable to any women ever before, do not feel as free as they want to† (Wolf, 1991, p.486). In reading the book, one can actually say that Wolf presented the sides of her argument, but not the other side. Due to this, the book somewhat have an abrasive tone to it. Such approach to the argument is similar to Pham’s. In his article, Pham mainly addresses individuals who understand the virtual world

Air conditioning. What and when was it invented How did it develop Essay

Air conditioning. What and when was it invented How did it develop - Essay Example It was fan-powered. It was Ding Huan who made a fan which passed air from cold water which then spread in the house. This idea was found in the dynasties of Tand and Song. First, people powered the fans manually. Later on, water was used to drive the fans. One very difficult design of powering the fan was found in the Tang dynasty in which the fountain water that went upwards was used to push the gears and hence, the fans were turned on. In the air-coolers in which water was used as the main cooling thing, the evaporation of water made the space very humid. Michael Faraday as a scientist of British origin who in 1820 made a compressor in which, ammonia was used. The challenge in front of Faraday was to exhaust the fumes of ammonia. This was difficult because of the toxic property of ammonia. Although the cooling agent was unsafe, yet the technology of compressing he introduced is used even today. Compression was later used by John Gorrie who was from Florida. He made ice with it. With this ice, he cooled down the structures. The commercial air conditioner was invented by Willis Haviland Carrier in the year 1902 (â€Å"History of Air Conditioning†). Carrier was a very hard working person. â€Å"I fish only for edible fish, and hunt only for edible game even in the laboratory† (Carrier cited in Bellis). His air conditioner was to be used to lower down the temperature of the machinery that was used in the process of printing. But one thing that Carrier noticed and was very good about his design was that in addition to cooling down the air, his air conditioner also regulated the humidity in the air. This property assisted in calibrating the ink in the printing press and also made the alignment of the papers very good. This was a very wonderful achievement and laid the basis of air conditioning in both the commercial and the industrial sectors. Carrier decided to do good business with his air conditioners, so he opened up