A Brief Note On The Civil War And Its Impact On Women s...

Women’s Suffrage and Labor Rights: An Analysis of the Civil War and Its Impact on Women’s Rights In 1865, four brutal years of the Civil War ended, and Congress passed three amendments that eliminated slavery, gave citizenship to everyone born in the United States, protected people’s rights to due process, required equal protection under the law, and guaranteed voting rights to all American men. However, African American men were still segregated in terms of housing, work, equal pay, and schooling. Despite this unfair treatment, African American men received better treatment compared to their female counterparts. After the Civil War, all American women did not have the same rights as men. While the men fought to keep the Union together,†¦show more content†¦Unfortunately, women soon discovered that the Fifteenth Amendment did not grant them the right to vote despite the specific language implying any person could vote. Despite this setback, many people remained hopeful that equality for all woul d eventually occur, and life would improve for everyone. Although African Americans now had equal rights under the constitution, life after slavery was still harsh. Many African Americans found themselves out of work, and, therefore, had to find employment. Most former slaves, desperate for work, returned to their former owners and earned a very small wage. Although African American men gained rights, they were still subjected to the worst jobs available at that time like working long, hot hours in the farm fields and factories. Meanwhile, African American women worked as household workers in the city. Not only was labor difficult to find for African Americans, but white southerners were out of work as well. The repercussions of war were still prevalent; many southern women lost their husbands in the war, and, therefore, had to work to provide food for their families. This led to a competition for employment between African Americans and whites. Some families became so desperate tha t they would wander the countryside scavenging for food, sometimes walking ten to forty miles a day. A widow washerwoman with sixShow MoreRelatedEssay about Modern History - Decline and Fall of the Romanov1156 Words   |  5 Pagesï » ¿MODERN STUDY NOTES: TITLE SUBHEADING NOTES Decline and Fall of the Romanov Dynasty Nicholas II as an Autocrat Nicholas II: Weak and indecisive leader; gentle. Uneducated. Tsar refused to move with times; see changes and reforms. Close relations with Queen Victoria. Manipulated/Heavily influenced by wife Tsarina Alexandra. Austrian princess – granddaughter of Queen Victoria. Pressured Nicholas to preserve autocracy. 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Furthermore, according to the World Bank s governance indicators for 2008, the country was given a high percentile rank of 94.3 on government effectiveness. The heavy involvement of the UK in the war on terror in Afghanistan and Iraq seems to have had some negative consequences. The threat of terrorism is being taken more seriously than before. The July 7, 2005 bombingsRead MoreRole of Ngos in National Development and Security4510 Words   |  19 PagesG.O is an abbreviation, which stands for Non-Governmental Organization, literally speaking because they are not formed by the government, not controlled by Government bureaucracy and they do not participate in decision or policy making of Government(s). SOME HISTORICAL PERSPECTIVES For a better understanding of the present topic, one needs to have an insight into the history or evolution of NGOs. Community based organization’s evolution dates back decades ago. Some of the then existing voluntary

The Real Estate Development Of Egypt Essay - 1810 Words

We have decided to invest in Cairo, Egypt. Our company named Bassma Real Estate, aimed at developing a real estate property in the New Cairo settlement. Egypt is a unique country with great potential. The real estate market in Egypt is like no other in the Middle East or Africa. It has withstood two revolutions and major political and economic instability. Yet it remains resilient and has seen tremendous growth over the past few years. Land prices have seen a steady increase in value at an average of 10% per year since 2010.(Egypt property market,2015) Another unique factor to Egypt is its population growth, growth rate of around 2.0 it is the highest in Africa making real estate development not only an opportunity but also a necessity. Our product is luxury residential apartments aimed at the upper middle class, specifically young couples who are looking to buy their first home. We offer a unique approach by positioning ourselves as experts on shepherding first-time home buyers comf ortably through the process of buying a home they like and can afford. Like any investment it does not come without risks, but Egypt has some unique challenges to it. Mainly, its currently weak currency. Although it has begun to stabilize it is still weak and does not look to becoming stronger in the near future. We hope to take advantage of the opportunities this endeavor provides us and to establish our brand so as to develop more properties in Cairo and may even expand beyond that. Egypt’sShow MoreRelatedThe Causes Of The Overwhelming Civil War In Syria1183 Words   |  5 Pagesdisagreements which reduces tourist’s expenditures and decrease GDP. †¢ Total employment in tourism sector dropped since the beginning of the Syrian war. 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Self critque Free Essays

The research I used was mostly from personal experience with my daughter’s condition as well as information I researched online. I feel Like I used a lot of Information and my classmates got a lot from It also. 2. We will write a custom essay sample on Self critque or any similar topic only for you Order Now Organization: I attempted to keep my presentation organized In a way that I could convey my speech both In a emotional and Informative way. I used somewhat of a chronological order when It came to explaining the events In my daughter’s life but I do feel that I caked a bit In organization. . Introduction: The attention getter I used was Just me talking about why each one of us was taking the time to talk about something were passionate about and how my choice was a bit different than many others my age. I believe it was effective in setting the tone for the presentation. I did present the main points of speech but it wasn’t until after I introduced the subject. 4. Body: I feel I presented the information in a logical way and was able to keep everything together with the thesis. Since the topic of my speech/presentation was about my daughter, my original fear was to lose track into another subject since I felt I could talk forever about her. I did narrow it down to the main points keeping everything relevant to the thesis. 5. Conclusion: I closed my presentation with the title of my speech which was, â€Å"A little light shines a long way†. I felt it conveyed an important message of never giving up and persevering in life, which is relatable in many situations to many people. I ended my speech with short video and my final words to review what was said during the entire speech, so it was clear that my presentation was over. 6. Transitions: I used transitions mostly when I was transitioning between ideas during my speech. I tried to firstly start with the idea of the subject and then introduce It completely. Although I did feel my transitions were a bit rough, it is something I need to work on. 7. Visual Ad: I worked very hard on my visual aid and felt that It helped convey my speech tenfold! I think I would use the same method of presenting any other speech because I felt hat using a Powering presentation Is one of the best ways of visually showing your audience what you want to talk about. 8. Telling: When It came to timing, I wanted everything to sound natural and sincere so I TLD want to rush. Having used this method, I believe I went over my time Limit, which will be something I will have to work on. 9. Delivery: Initially I was very nervous, so I started speaking very quickly, but as I progressed along, my speed slowed down because I became comfortable with my audience. I audience, which in the end helped a lot. 0. Practice: I rehearsed my presentation several times with my family and classmate Carmen. I feel like getting their feedback helped a lot with condensing UN-useful information, as well as adding better and necessary points to my speech that I had not noticed or already had. How to cite Self critque, Papers

Italian Baroque Characteristics Essay Example For Students

Italian Baroque Characteristics Essay One of the characteristics of the Italian Baroque is the realistic depiction of human figures, vivid use of color and foreshadowing techniques, especially in the paintings In addition, the figures of the paintings seem to emerge from the background, giving huge differences between light and dark. The Italian baroque structure has a sense of movement and that of energy when in static form. The sculptures make the observers to have multiple viewpoints. The Baroque architecture has characteristic domes, colonnades, giving an impression Of illume and void. Michelangelo ¶s David does not react with the surroundings but it stands alone With the little movements disguised behind it. The sculpture brings out David as a soldier preparing for war and not a person engaged in a battle (Miller, Bandore, Newscaster, 2010). The hands are larger than normal and the arms are longer than his body. This is meant to illustrate the renaissance period. In contrast, the Berings David has aspects of motion, showing that he was already engaged in the battle with Goliath, The idea of went is enhanced by the loosely flowing robes. In addition, the sculpture demonstrates that unlike Michelangelo David that has longer hands, Berings David has contracted muscles. The Michelangelo sculpture was created during Renascence period while the Berings sculpture was done during the Baroque period. Aggravations painting is unique due to its wonderful use of chiaroscuro, which is the contrast between light and dark, For example, the painting Supper at Museum (1 602) illustrates Jesus and his disciples in bright colors and uses a ark tint for the background (Miller, Bandore, Newscaster, 201 0), Looking at the painting The Incredibility of Saint Thomas, the power seems to lie in the skepticism exhibited by Apostle Thomas. The painter seems interested in Thomas doubt at the time he is pushed to the limits to believe about Jesus resurrection (Miller, Bandore, Newscaster, 2010). Enlightenment deals with the use of human reason to combat ignorance and enhance political, religious and educational achievements. The enlightenment period enhanced art and evolutionists the themes and topics that relate to this area of study. The subjects and topics that used to be discussed in arts have now been altered and turned into political and economic issues. One of the paintings done by Rococo was that of a girl in a field, in the presence of string wind that blowing up her dress and hair. This painting uses a wide range of pastel colors and has graceful curves that embellish the ladys figure (Adams, Adams, 2010). The background is also well developed due to the wonderful combination of colors and the right background. Jacques Lois David painted The Oath of Horntail, which was illustrates soldiers holding swords up high, The simplicity of the painting makes it one of the most spectacular pieces tot art. The art is subdivided into three different components, including three swords, three brothers and three people in a group (Adams, Adams, 2010). The background also has three people and this gives the painting a triangular perspective. This painting demonstrates Jacques creativity as he used it to represent a time when the world was slowly

Explanation of chemical feeling of love Essay Example

Explanation of chemical feeling of love Essay The Explanation of Love and Monogamy Among Men Marcel Dante Gearing Ivy Tech Community College On the day of November twenty-seventh, Time Magazine released an article proclaiming to have found the source of human monogamy and love. With a concentration on men, Mall Salivate, the author, proposed that the chemical extinction Is responsible for modern day love. extinction a chemical that Is Influential In the maternal connection created between mother and child, therefore bonding the two emotionally. Time magazine also states that extinction can also make romantic ratters look more attractive than strangers to men, even if both are objectively equally good looking. According to Time Magazines Maim Salivate, monogamy has been a biological mystery for years. Including statistics that project the belief that only 3 percent of mammals are monogamous, and this percentage is weighted by the understanding that simply, males can produce much more offspring by mating with more than one female. To reiterate and clarify the newfound discovery of extinctions abilities, Once men receive extinction, the attractiveness of the partner increases compared to the attractiveness value recorded for other females, says Herculean. Time magazine then states, And the men were not aware that they behaved differently on extinction; in fact, they could not reliably distinguish between it and placebo. They didnt feel high or any craving ? at least as measured by their ratings of their feelings in both conditions. In conclusion of Time Magazines article, Maim Salivate writes that extinction can create unconscious biases towards a personal partner, which in turn would support monogamy and influence more intimate emotional connections. Not only Is extinction lived to develop rose colored glasses, but It also may unconsciously deterring Interest In other potential mates. In the recent article written by Mall Salivate from Time Magazine, proper scientific terminology was applied frequently and eff ectively. Mamas objective seemed to be the assessment of why men committed to monogamy and what could be the source of faithfulness. We will write a custom essay sample on Explanation of chemical feeling of love specifically for you for only $16.38 $13.9/page Order now We will write a custom essay sample on Explanation of chemical feeling of love specifically for you FOR ONLY $16.38 $13.9/page Hire Writer We will write a custom essay sample on Explanation of chemical feeling of love specifically for you FOR ONLY $16.38 $13.9/page Hire Writer An article written by Rene Herculean titled, The Promises and Perils of Extinction supports and ferrules these claims with actual research and live testing. The title of the article Itself was not misleading, but It does seem to be order In a particularly noticeable fashion. Rather than strictly stating the topic of the article through the title, it portrayed a more subjective, almost defensive feel. In inquisitive and exciting idea would set the tone for the facts. If the article was designed appeal to the emotional turmoil of those who have suffered from failed monogamy attempts it would cause the readers to become more invested. While becoming anxious for an answer to male faithfulness, readers would then be presented with the scientific results and facts. Using this style of writing, creates motional uproar, but then soothes and calms readers with an answer to their problems. Personally, my believe is that the author of this article presented and informed us readers clearly and intentionally. In regards to the title of the piece, it created some pessimistic assumptions prior to reading this article. Overall, Maim Salivate performed well and informed me of something that I had yet to come across in the world in neuroscience and biology. In conclusion, my approach to writing this article would have been more emotionally involved than what Maim had initiated. My reasoning behind this is my understanding that emotional reading revoke feelings from the past, which in turn gives my article a reservation in the minds of my readers. Also with my version, the title would fit smoothly into the representation of the info I displayed. Within Mamas article, the fact that kissing, and moments of intimacy created extinction inside the brain of males was presented. With this information people that have read this will be more physically involved with their male partner in order to further ensure monogamy. In the future, those that are wholeheartedly convinced by Time Magazines article, How Extinction Makes Men (Almost) Monogamous, will indeed increasingly enforce intimacy within their relationships. I expect people to use the lack of extinction and intimacy to rid themselves of a partner they no longer wish to be involved with. Decreasing the amount of kissing, physical arousal, and intimacy will cause the male partner to receive less extinction, therefore creating an opening for polygamy. RESOURCES Lay Article: How Extinction Makes Men (Almost) Monogamous, Maim Salivate, Time Magazine Article, Novo. 27, 2013 Peer-Reviewed Article: The Promise and Perils of Extinction, Rene Herculean, Article, September, 2012 Lay Article What happens when a man finds the one? His brain gets washed in extinction. The hormone and brain chemical best known for its role in love ? its also responsible for helping infants bond to their mothers ? can also make romantic partners look more attractive than strangers to men, even if both are objectively equally good looking. Published in the Proceedings of the National Academy of Sciences, the study included 40 young men, all of whom had been in a relationship for at least six months and reported being passionately in love with their partners. While in a brain scanner, they either inhaled extinction or placebo via nasal spray while they viewed pictures of either their partners, women they knew but were not dating or women they had never met. The pictures were matched so that comparison women had been rated by independent observers as being equally attractive as the partners. In the men who were given extinction, the pleasure and desire regions of their brains lit up when they saw pictures of the women they loved ? but not when they looked at men knew, but not as strongly as by the pictures of their loved ones, suggesting that it made their partners more desirable. Its really intriguing, says Larry Young, professor of psychiatry at Emory University, in Atlanta, who was not associated with the research. The study is one of the first to show a role for the hormone in human monogamy (prior research revealed similar effects in other mammals). How monogamy works has long been a biological mystery. Sexual monogamy in humans is potentially costly for males, says lead author Dry. Rene Herculean, professor of psychiatry at the University of Bonn in Germany, explaining that he and his team wanted to understand some of the chemical contributors to the practice. Only 3% of mammals are monogamous, and that small proportion likely reflects the fact that from a simple b iological perspective, it makes little sense for males who could produce far more offspring by mating with multiple females. Once men receive extinction, the attractiveness of the partner increases compared to the attractiveness value recorded for other females, says Herculean. And the men were not aware that they behaved differently on extinction; in fact, they could not reliably distinguish between it and placebo. They didnt feel high or any craving ? at least as measured by their ratings of their feelings in both conditions. It really is very subtle, says Young, noting that the size of the difference between extinction and placebo was small. Whether this is because intranasal extinction doesnt have a powerful effect on the brain or because extinction typically changes behavior without our conscious awareness is not known. What is clear, however, is that extinction can create unconscious biases in favor of a partner, possibly providing part of the biological mechanism behind monogamy. A prior study by the same researchers, in fact, found that men in monogamous relationships who were given extinction actually kept a rater physical distance from an attractive research associate, compared with single men. Young suggests that extinction may actually have a dual effect ? by not only making partners more attractive but also actively deterring interest in other potential mates. He notes that in the monogamous prairie voles he studies, males that have a pair bond can actually be hostile to other females. They develop a very strong preference for the partner and slight aggression towards those who are not their partners, he says. The fact that these biases are only seen in men when under the influence of extinction ? not placebo ? may even hold lessons for those who want to stay faithful. Think about when extinction is released, says Herculean, noting that this occurs during kissing, hugging, orgasm and other intimate moments. The more such moments you have, the more extinction is released in the body. And, says Young, if you combine this with other rewarding experiences that also get the reward system going ? such as doing new and challenging things together ? you can strengthen your connection to each other. Seems like extinction might be the perfect ingredient for a fragrance called Faithful. Peer Review Article NEUROSCIENCE The Promise and Perils of Extinction Is extinction the next revolution in psychiatric medicine?or an overjoyed hormone desperation of patients and families living with disruptive disorders day in, day out. From bonding to bedside The hypothalamus, an evolutionarily ancient part of the mammalian brain, makes Kyoto- chin. Released into the bloodstream by the nearby pituitary gland, it signals the uterus to contract during childbirth and stimulates the release of milk for nursing. The hormone was the first peptide to be synthesized in the laboratory, a feat that earned American biochemist Vincent du Vignette the 1955 Nobel Prize in chemistry. Given the hormones known roles, researchers soon wondered whether it also played a role in reproductive behavior. In the late sass and early sass, work with rats and sheep found that extinction enhances mother-infant bonding. In the ass, Carter and others established its role in fostering pair bonding in prairie voles. Unlike most rodents, these furry inhabitants of the North American plains form lifelong bonds and share the work of raising offspring (although trysts are not uncommon). In 2000, Larry Young and colleagues at Emory University in Atlanta reported that genetically engine- neared mice lacking extinction are unable to recognize other individuals, pointing to an even broader role for the hormone in Monroe- productive social behavior. Although much of this work has been written into textbooks, the more recent ox- tocsin research in humans has frequently found its way into tabloids. In one of the first eye-catching studies, neurotransmitters Ernst Fear of the University of Zurich in Sit- garland and colleagues gave extinction nasal spray or a saline spray placebo to university students before a game in which they had to decide how much money to entrust to a stranger. (The more money a player entrusts, the larger the potential gains and potential losses. ) Those who got extinction were more trusting, the researchers reported in Nature in 2005. A torrent of studies followed, sue- getting that extinction not only increases trust and cooperation, but also boosts social per- captivities, such as face recognition and the ability to read whats on someones mind from the look in their eyes. Few substances produced by the human body have inspired as much hoopla as extinction. Recent newspaper articles have credited this hormone with promoting the kind of team- work that wins World Cup soccer champion- ships and suggested that supplements of the peptide could have prevented the dalliances and subsequent downfall of a certain high- ranking U. S intelligence official. Although the breathless media coverage often goes too far, it reflects a genuine and infectious excitement among many scientists about the hormones role in social behavior. First stud- led by biologists for its role in childbirth and lactation, extinction has more recently cap- titivated neuroscience and psychologists who have found that it can promote trust and cooperation and make people more attuned to social cues. Now psychiatrists have caught Kyoto- chin fever. Dozens of clinical trials are under way, or will be soon, to investigate the horn- ones potential benefits for a wide range of psychiatric disorders. The interest isnt hard to understand. Many psychiatric con- editions have social symptoms, such as the characteristic lack of empathy in autism, the attachment anxiety of borderline personality disorder, and the paranoia of schizophrenia. Yet no drugs currently approved for psychiatry- rice use directly target social behavior. For autism in particular, hopes for Kyoto- chin run high. A large trial of the hormone on 300 affected parents of autistic children have persuaded physicians to prescribe Kyoto- chin nasal spray, which can be obtained from compounding pharmacies. At first glance, extinction might seem like just what the doctor should be ordering. But as researchers have continued to explore the hormones effect on human behavior, a darker side has emerged. Extinction seems to promote aggression or other antisocial behavior in some circumstances. Its effects also appear to vary depending on a persons genetic makeup and psychological status. And no one knows what long-term Kyoto- chin treatment does to the developing human brain. Disconcertingly, one recent study found that male voles treated for several weeks with extinction nasal spray around the time of adolescence later exhibited impaired social bonding with females. The more we know, the more complicated its getting, says Sue Carter, a behavioral neuroscience- monologist and a pioneer of research on ox- tocsins role in social behavior now based at ART International in Research Triangle Park, North Carolina. What worries me, and should worry others, is that so much of the basic background is missing ?SUE CARTER, ART INTERNATIONAL Carter is particularly worried about giving extinction to children before more is known about the hormones developmental effects. l think there probably is a place for Kyoto- chin in several aspects of medicine, she says. But what worries me, and should worry tooth- errs, is that so much of the basic background is missing. At the same time, those leading the trio- alas say that the scientific rationale for using extinction is already strong enough, especially given the lack of better options. This could be the first drug to address the core sump- toms of autism, says Geraldine Dawson, a opalescent and child clinical psychology- gist and chief science officer of Autism Speaks, which has funded some of the early pilot studies. These findings quickly led to speculation about clinical applications. The f iris pub- listed study in which extinction was given to autistic children appeared online in Biology- cal Psychiatry in late 2009. In an experiment conducted by Adam Estella, a clinical psychologist at the University of Sydney in Australia, and colleagues, 16 autistic boys between 12 and 19 years old received a sin- glee dose of extinction nasal spray or a placebo in one session, and the alternative in another. Neither the boys nor the researchers evaluate- inning them knew which time they gotten the hormone. ) On extinction, the boys performed better on a common test of social cognition that involves looking at photographs of faces cropped to show Just the eyes and report- inning what emotion the person is most likely experiencing. The improvement was modest: from about 45% to 49% correct on average. People without autism typically get more than 70% correct. Studies in adults with autism have also demonstrated improvements on standard lab tests of social cognition. But the vast majority of published work on extinction to date as looked at the effects of a single dose over the course of an hour or so in the lab. The real question is whether the hormone can restore normal behavior in real life. To find out, Estella and others are conducting trials in which people with autism take daily sniffs of extinction for seven- real weeks or months. These pilot studies are in various stages and several researchers told Science that its too soon to talk about the findings in detail. Interesting things are coming out of these studies, Estella says makes us think this is a cure for autism. get under way this spring should help clarify things. It will be led y psychiatrist Linear Sickish at the University of North Car- Olin (UNC), Chapel Hill, who A far larger trial scheduled to received a $12. 6 million Autism Centers of Excellence grant from the National Institutes of Health in September for this trial. Her team plans to enroll 300 autistic children between the ages of 3 and 17, half of whom will receive extinction nasal spray twice daily for 6 months in a placebo-controlled, double-blind trial, and all of whom will receive the hormone for 6 months in a subsequent open-label extent- Soon of the trial. Researchers will look for any adverse side effects and monitor the kids with arioso checklist measures of social behavior filled out by a clinician or parent. Autism is hardly the only disease being investigated. Out of 44 neuropsychiatry trio- alas of extinction listed on ecclesiastical. Ova, roughly three-quarters are for other disorders. Pilot studies in people with schizophrenia, who often suffer from paranoia and difficulty reading social cues, suggest that extinction can reduce psychotic symptoms and improve social cognition. The benefits are modest, but encouraging, says Court Petersen, a psychic- trust and behavioral neurologists at UNC Chapel Hill. Ephedrines work in the sass established the role of extinction in mother-infant bond- inning, but more recently his interest has turned to the hormones clinical potential. One of the real deficits in psychiatry research is a complete lack of appreciation of evolution, Petersen says. The human brain evolved to evaluate and maneuver in very complex social environments. Petersen argues that the role of the brains social circuitry in sys- psychopathology is too often ignored. And thats what makes extinction so exciting in his view. One of the really cool things about extinction is that it probably plays a central role in the social brain, he says. Lee published study on the long- term behave- oral effects of multiple doses of extinction in developing animals. It seemed to me that we were really skipping a step. From work she did as a postdoctoral feel- low with Carter, Bales knew that even a sin- glee dose of extinction can have long-lasting effects. In a series of studies published in the sass, they found that p rairie vole pups treated with extinction on the day of birth exhibited abnormal pair bonding and parental behavior as adults. The effects were messy? treated animals grew up to be more social or less social than normal, depending on their sex and the dose they received. The clearest message was that any exposure to extinction can cause long-term behavioral and neuron- endocrine effects, Bales says. In one study, Bales found that males given a single dose of extinction at birth had reproductive difficulties as adults: They deposited sperm in the female reproductive tract in only 50% of mating attempts, for example. More recently, Bales and colleagues tried to better mimic the type of extinction treat- meet now in clinical trials for autism, giving young prairie voles daily squirts of extinction in the nose for 3 weeks. In developmental terms, Bales says that the voles were roughly equivalent to 12- to 7-year-old children, the target group for several trials. In the short term, extinction made the voles more social, as expected: After a dose, they spent more time in close cognitions with their partners, the research- errs reported online on 15 October 2012 in Biological Psychiatry. The standard test of pair bonding in voles, Bales explains, is to put a male in an empty chamber connected to two other chambers: one containing his mate, and another con- tanning an unfamiliar female. A normal male prairie vole will run around and check every- thing out and then go hang out with his part- near, Bales says. But males that had gotten a daily dose of extinction comparable to that being given to autistic children?or an even lower dose?were more likely to spurn their partner in favor of the stranger. To Bales, the findings raise the troubling possibility that repeated use of extinction nasal spray may cause long-term changes in the brain that negate or even reverse the hormones been- fits, perhaps by tricking the brain into making less extinction of its own. Other signs that theres more to extinction than cuddles and hugs have emerged from human experiments. In 2010, psychologist Scarcest De Drew and colleagues at the Nun- varsity of Amsterdam gave extinction nasal Caring family. Prairie vole parents share the work of raising offspring, but a recent study suggests long-term extinction treatment can disrupt bonding between partners. Cause for concern The explosion of clinical trials with Kyoto- chin, particularly those in children, troubles Karen Bales, a behavioral neuroscience at the University of California, Davis. Theres been this quick leap from looking at a sin- glee dose of extinction in healthy adults to try- inning to give it to children with autism whose brains are still developing, she says. Bales says that she looked and couldnt find a sin- 268 18 JANUARY 2013 VOLE 339 SCIENCE www. Sustenance. Org published by AAAS CREDIT: KAREN BALES/UNIVERSITY OF CALIFORNIA, DAVIS Downloaded from wry. Science. Org on January 18, 2013 spray to men before they played a computer game in which small teams competed for money. Compared with men who got a saline spray, those who sniffed extinction behaved more altruistically to members of their own team?but at the same time, they were more likely to preemptively punish competitors, the team reported in Science. In a 2011 study in the Proceedings of the National Academy of Sciences, De Dress team found that ox- tocsin increased favoritism toward subjects own ethnic roof (native Dutch men) on a series of tasks and thought experiments done on a computer, and in some situations the treated men exhibited more prejudice against other groups (Germans and Middle Eastern- errs, in this case). To some researchers, this suggests that extinction is a double-edged sword: pro- noting bonds with familiar individuals, but promoting unfriendly behavior toward strangers. In the beginning, everyone thought it would have very robust pros- Cal effects, but it seems to depend on how you interpret the term proboscis, says Rene © Herculean, a psychiatrist at the University of Bonn in Germany. In a study published on 14 November 2012 in The Journal of Neuroscience, his team reported that when men who reported being in a stable hetero- sexual relationship took extinction, they put a bit more distance between thems elves and an attractive female experimenter who entered the room. To Herculean, these find- inns, like De Dress, suggest that extinction promotes bonding within an established pair (or group) at the expense of outsiders. That makes sense from an evolutionary Perspex- dive, he says, but may not with psychiatric disk- orders, Herculean cautions that it might not have the same benefits for all patients. An illustration of Just that comes from work by Jennifer Bart, a social psychology- gist at McGill University in Montreal, Can- dad. Encouraged by the reports that extinction increases trust, Bart thought it might help people with borderline personality disorder (BAD), who are plagued by fears of ban- oddment and separation, and have profound difficulties with relationships as a result. But when she and colleagues gave a single dose of extinction nasal spray to people with BAD, they became less trusting and less likely to cooperate with a partner in a social dilemma game, the researchers reported in 2011 in Social Cognitive and Affective Neuroscience. This effect was strongest in those with BAD who scored highest on self-report measures of relationship anxiety and fear of rejection. Social studies. New clinical trials seek to determine if extinction can boost social behavior in children with autism. One possibility, Bart says, is that ox- tocsin increases the desire to connect and heightens attention to social cues. That may backfire in people with BAD, who are already hypertensive and anxious in social situations. The picture thats now emerging is that its not this global social panacea, Bart says. In many cases it upends on the situation in which its given or the person to whom its given. A risk worth taking? Going forward, the success or failure of extinction as a psychiatric drug may hinge on figuring out which disorders and which people respond positively to the hormone? theres evidence that people with variants of the extinction receptor gene respond differ- entry?and in what context. In my view, the best bene fit from stimulating the ox- tocsin system is going to be to combine it with a controlled behavioral therapy, Memo- rays Young says. He believes that extinctions main effect is to make people more insensitive to social cues. In a therapists office, chill- drew could be assured of receiving positive, reinforcing social cues while under the horn- ones sway. Not so if they simply take the hormone and went about their day. Say you give it to a kid and then he goes to school and gets bullied. Thats not going to have a positive impact, and it may even make things worse, Young says. A better handle on the basic biology of intranasal extinction, such as how it enters the brain and which receptors it hits, might enable researchers to develop more effect- dive drugs, Young adds. If we want to eve beyond this initial investigatory era and get more sophisticated and potent effects, we need to understand the mechanisms. Despite the unknowns, Sickish and others insist that the clinical trials are Justified. A lot of people in this country, probably a few thousand, are going to compounding par- masses and having them put together prep- rations of extinction, Sickish says. We feel like its really important, for something thats being used in this unregulated way, to get some data on how safe it is and figure out does it work or does it not work. For Dawson, the lack of better options is a powerful motivator. Only two drugs are cur- rental approved for autism, she notes: Both are an tispasmodic medications prescribed to cut down on tantrums, aggression, and self- injury. These drugs dont directly address the social deficits at the core of the discord- deer, and they have potentially dangerous side effects, not to mention unknown effects on brain development. Behavioral interventions such as the Early Start Denver Model, which Dawson co-developed, have proven success- intensive one-on-one therapy and can cost $25,000 to $50,000 a year. In contrast, a years supply of extinction, which is currently only available in a proprietary synthetic erosion, costs roughly $5000. And it could get much cheaper if a generic version becomes available. Among parents of autistic kids, theres long been a willingness to try experimental treatments, even before theyre fully vetted by researchers, Estella says. A driving factor, he says, is frustration that science has let them down by moving too slowly. At the same time, researchers such as Carter and Bales hope that science wont let these families down again by rushing too quickly into clinical trials with a hormone whose effects arent adequately understood.

FORD Surname Meaning and Origin

FORD Surname Meaning and Origin The Ford surname is generally believed to have originated as  a name bestowed on someone who lived near a ford or river crossing, from the Old English ford, meaning pass or crossing. Ford may also have derived from English places named Ford, such as Ford in Northumberland, Ford in Somerset, Ford in Shropshire, Ford in West Sussex and Forde in Dorset.   According to the Dictionary of American Family Names, it is also possible that the use of the surname Ford arose in a particular family as an Anglicization of one of several Irish surnames, including  Mac Giolla na Naomh  (a personal name meaning servant of the saints)  and  Mac Conshmha (a personal name comprised of the elements con, meaning dog and  snmh, meaning to swim),  whose  final syllable  was once wrongly thought to be the Irish  th, meaning  ford, as well as  Ãƒâ€œ Fuar(th)in, meaning cold little ford, derived from fuar, meaning cold. Surname Origin: English Alternate Surname Spellings: FORDE, FFORDE, FOARD, FOORD Where in the World is the FORDSurname Found? While it originated in the Netherlands, the Ford  surname is now most prevalent in the United States, according to surname distribution data from Forebears. However, it is also somewhat common in Chile and Columbia. The name was more common in the United States during the 1880s than it is now, especially in the states of New York and New Jersey. The Ford  surname is now most common based on percentage in the U.S. states of Alaska, Arkansas, New Jersey, Illinois, and Connecticut, according to  WorldNames PublicProfiler.   Famous People with the Last Name FORD Gerald Ford - 38th president of the United StatesTennessee Ernie Ford -  American recording artist and television hostJohn Ford -  American  Academy Award-winning director, best known for WesternsGlenn Ford (Gwyllyn Samuel Newton Ford) - Canadian-born American actorHenry Ford -  American industrialist and  founder of the Ford Motor Company Genealogy Resources for the Surname FORD Ford Surname DNA ProjectOver 300 members have joined this DNA surname project which uses Y-DNA, mtDNA and autosomal DNA to piece together various Ford lines back to common ancestors. Common English Surnames: Meanings and OriginsLearn about the four types of English surnames, plus explore the meaning and origin of the 100 most common English last names. Ford Family Crest - Its Not What You ThinkContrary to what you may hear, there is no such thing as a Ford  family crest or coat of arms for the Ford surname.  Coats of arms are granted to individuals, not families, and may rightfully be used only by the uninterrupted male line descendants of the person to whom the coat of arms was originally granted. FamilySearch - FORD GenealogyExplore over 4 million  historical records and lineage-linked family trees posted for the Ford surname and its variations on the free FamilySearch website, hosted by the Church of Jesus Christ of Latter-day Saints. FORD  Surname Family Mailing ListsRootsWeb hosts several free mailing lists for researchers of the Ford  surname. DistantCousin.com - FORD Genealogy Family HistoryExplore free databases and genealogy links for the last name Ford. The Ford Genealogy and Family Tree PageBrowse genealogy records and links to genealogical and historical records for individuals with the popular last name Ford from the website of Genealogy Today.- References: Surname Meanings Origins Cottle, Basil.  Penguin Dictionary of Surnames. Baltimore, MD: Penguin Books, 1967. Dorward, David.  Scottish Surnames. Collins Celtic (Pocket edition), 1998. Fucilla, Joseph.  Our Italian Surnames. Genealogical Publishing Company, 2003. Hanks, Patrick and Flavia Hodges.  A Dictionary of Surnames. Oxford University Press, 1989. Hanks, Patrick.  Dictionary of American Family Names. Oxford University Press, 2003. Reaney, P.H.  A Dictionary of English Surnames. Oxford University Press, 1997. Smith, Elsdon C.  American Surnames. Genealogical Publishing Company, 1997. Back toGlossary of Surname Meanings Origins

Government Law Essay Example | Topics and Well Written Essays - 1000 words

Government Law - Essay Example This authority has permitted the Supreme Court to review in terms of affirming or overturning rulings of lower tribunals and courts. The power of judicial review was first exercised by the Supreme Court in the case titled Marbury v. Madison in 1803 and this power is granted vide Article III, sections 1 and 2 of the Constitution (Urofsky, 2001). Main Body The process by which the Supreme Court makes reviews of cases has changed considerably over time. Currently there are a number of ways in which cases are put up before the Supreme Court. A writ of certiorari petition can be made by parties to the case that has been ruled by a US court of appeals or by writ of certiorari in regard to decisions taken by any state court following rejection of all state appeals. The appeal must imply an issue of federal, statutory or constitutional law. The Supreme Court can also make review of cases by petition for certiorari prior to judgment so that cases can be expedited that are pending before the a ppellate courts. Cases can also be put up by appeal in the context of decisions of district courts in the US that relate to redistricting of state or Congressional legislative districts (Epstein, 1995). The Constitution empowers the Congress to create bills that can become law only after they are signed by the President. The President has veto powers granted by the Constitution empowering him to keep a check on the power used by the Congress. However, such veto can be overridden if Congress musters 2/3rd majority, which proves to be a check on the authority of the President. The Supreme makes an evaluation about the constitutional validity of the law when a person is impacted directly by such law in terms of personal damage (Stuntz, 1997). Mostly, the case has to go through a trial court and subsequent appeals in lower courts before being taken up by the Supreme Court. If the Supreme Court is unable to find a basis to nullify the law, the President has to take a decision. Laws are n ot made by the Supreme Court directly but its rulings shape the law (Cox, 1987). Legislative process involves the Congress whereby it passes bills that have to be approved by the President. If the President approves a bill, he signs it into becoming law. The judicial process involves the Supreme Court in terms of reviewing the law for its constitutional validity. If the law is found unconstitutional by the Supreme Court, it can nullify the same. The President is vested with the responsibility of enforcing Supreme Court decisions. Both the Congress and the President enjoy exclusive rights in creating new laws that are reviewed by the Supreme Court. The President can make recommendations about terms and items that are to be reviewed in this regard (Beard, 2007) The different branches of the government comprise of the Executive, Legislative and Judiciary. The Executive comprises of the President and the Vice President of the country and they are elected leaders in being the First and S econd in command (Spaeth, 1979). The President has to ensure that laws passed by Congress are implemented and he/she has the power to veto and rule against laws that are passed by Congress, which he/she can do by refusing to sign the bill. The Legislative is also known as the Congress and comprises of the Senate and the House of Commons. The Congress has the power to declare war in demanding situations and to create laws for the

Questions Essay Example | Topics and Well Written Essays - 250 words - 9

Questions - Essay Example If an artist is able to manage an analysis of bulk information, they are capable of inserting hugely valuable inclinations and breakthroughs. As a result, artists are able to actively secure their artworks in an appealing prospect for data security. Many artists certainly collect numerous bits of data with the usage of security gadgets. Their information can be secured through valuable inclinations and breakthroughs attached to their switches, internet connecting routers and data flow devices in an infinite manner (Vaidhyanathan 83). The first amendment and the right freedom of speech do not exist in absolute and unchallengeable senses. This is because reflection about liberation of speech on constitution day highlighted the protection of free speech by the first amendment (Vaidhyanathan 117). More precisely, free speech has been described as the communication conveyed into the market of concepts. These ideas have to have the authority to permit individuals on making decisions based on what is believed to be morally correct and incorrect. Therefore, I concur with the laws that forbid the criteria for harmful speech as referenced in the course book. The inherent dignity and equality of each person is the cornerstone axiom of global human rights. Global regulations restrict declarations that deny the fairness among all human beings. Hate speech laws form part of the regulations that go far enough in the criteria of hatred it is supposed to cover (Vaidhyanathan

Effects of human behavior on contemporary architecture design Essay

Effects of human behavior on contemporary architecture design - Essay Example Human beings in their natural way interact with the physical environment. They shape the environment to suit their needs. Human beings are always under conditions of uncertainty. They have unlimited needs that require to be satisfied for their survival. It is the unique nature for humans to have a sense of place (Newman and Douglas 72). The idea of place can be based on the built entity and the component of social order. This creates a need to possess a certain territory. The territory should provide comfort and shelter. Shelter is a basic need of human beings and an important factor in architectural design. At this level people seek out housing that fits their requirement, and will prefer to work in locations that reflect their ideals of social status. Individuals have a great deal of influence on modern architectural design in the manner they behave, interact and control space. Their safety and security connects to personal feelings and space that they inhabit. These feelings bear a great deal of influence on how design solutions appear relative to the surrounding society. Cultural traits are those characteristics that define culture and sub-culture. They are the human norms that govern actions, the view of the world and approach of human behaviors (Newman and Douglas 72). The most common trait definitions are cultural values, roles and norms. Cultural values call for an architectural design that is relevant to the cultural norms. A successful facility must provide aesthetic and functional significance to the society.

Deposits in Thermal Power Plant Condensers

Deposits in Thermal Power Plant Condensers Abstract: Unexpected fouling in condensers has always been one of the main operational concerns in thermal power plants. This paper describes an approach to predict fouling deposits in thermal power plant condensers by means of support vector machines (SVMs). The periodic fouling formation process and residual fouling phenomenon are analyzed. To improve the generalization performance of SVMs, an improved differential evolution algorithm is introduced to optimize the SVMs parameters. The prediction model based on optimized SVMs is used in a case study of 300MW thermal power station. The experiment result shows that the proposed approach has more accurate prediction results and better dynamic self-adaptive ability to the condenser operating conditions change than asymptotic model and T-S fuzzy model. Keywords: Fouling prediction; Condensers; Support vector machines; Differential evolution 1. Introduction Condenser is one of key equipments in thermal power plant thermodynamic cycle, and its thermal performance directly impacts the economic and safe operation of the overall plant [1]. Fouling of steam condenser tubes is one of the most important factors affecting their thermal performance, which reduces effectiveness and heat transfer capability with time [2, 3]. It is found that the maximum decrease in effectiveness due to fouling is about 55 and 78% for the evaporative coolers and condensers, respectively [2]. As a consequence, the formation of fouling in condenser of thermal power plants has special economic significance [4-6]. Furthermore, it represents the concerns of modem society in respect of conservation of limited resources, for the environment and the natural world, and for the improvement of industrial working conditions [6, 7]. The fouling of heat exchangers is a wide ranging topic coveting many aspects of technology, the designing and operating of condenser must contemplate and estimate the fouling resistance to the heat transfer. The knowledge of the progression and mechanisms of formation of fouling will allow a design of * Manuscript an appropriate fouling mitigation strategy such as optimal cleaning schedule to be made. The most common used models for fouling estimation are the thermal resistance method and heat transfer coefficient method [6-10]. However, the residual fouling of periodic fouling deposition process and the dynamic changes of heat exchanger operating condition are not considered in these models. Consequently, the estimation error of those methods is very large. Artificial Neural Networks (ANNs) are capable of efficiently dealing with many industrial problems that cannot be handled with the same accuracy by other techniques. To eliminate most of the difficulties of traditional methods, ANNs are used to estimate and control the fouling of heat exchanger in recent years. Prieto et al [11] presented a model that uses non-fully connected feedforward artificial neural networks for the forecasting of a seawater-refrigerated power plant condenser performance. Radhakrishnan et al [12] developed a neural network based fouling model using historical plant operating data. Teruela et al [13] described a systematic approach to predict ash deposits in coal-fired boilers by means of artificial neural networks. To minimize the boiler energy and efficiency losses, Romeo and Gareta illustrated a hybrid system that combines neural networks and fuzzy logic expert systems to control boiler fouling and optimize boiler performance in [14]. Fan and Wang proposed diagonal recurrent neural network [15] and multiple RBF neural network [16] based models for measuring fouling in thermal power plant condenser. Although the technique of ANNs is able to estimate the fouling evolution of heat exchanger with satisfaction, there are some problems. The selection of structures and types of ANNs dependents on experience greatly, and the training of ANNs are based on empirical risk minimization (ERM) principle [18], which aims at minimizing the training errors. ANNs therefore face some disadvantages such as over-fitting, local optimal and bad generalization ability. Support vector machines (SVMs) are a new machine learning method deriving from statistical learning theory [18, 19]. Since later 1990s, SVMs are becoming more and more popular and have been successfully applied to many areas such as handwritten digit recognition, speaker identification, function approximation, chaotic time series forecasting, nonlinear control and so on [20-24]. Established on the theory of structural risk minimization (SRM) [19] principle, compared with ANNs, SVMs have some distinct advantages such as globally optimal, small sample-size, good generalization ability and resistant to the over-fitting problem [18-20]. In this paper, the use of SVMs model is developed for the predicting of a thermal power plant condenser. The prediction model was used in a case study of 300MW thermal power station. The experiment result shows that the prediction model based on SVMs is more precise than thermal resistance model and other methods, such as T-S fuzzy model [17]. Moreover, to improve the generalization performance of SVMs, an improved differential evolution algorithm is introduced to optimize the parameters of SVMs. 2. Periodic fouling process in condenser The accumulation of unwanted deposits on the surfaces of heat exchangers is usually referred to as fouling. In thermal power station condensers, fouling is mainly formed inside the condenser tubes, reducing heat transfer between the hot fluid (steam that condenses in the external surface of the tubes) and the cold water flowing through the tubes. The presence of the fouling represents a resistance to the transfer of heat and therefore reduces the efficiency of the condenser. In order to maintain or restore efficiency it is often necessary to clean condensers. The Taprogge system has found wide application in the power industry for the maintenance of condenser efficiency, which is one of on-line cleaning systems [6]. When the fouling accumulation in condensers reached a threshold, the sponge rubber balls cleaning system is activated, slightly oversized sponge rubber balls continuously passed through the tubes of the condenser by the water flow, and the fouling in the condenser is reduced or eliminated. The progresses of fouling accumulating and cleaning continue alternatively with time. Therefore, the fouling evolution in power plant condensers is periodic. However, the sponge rubber ball system is only effective of preventing the accumulation of waterborne mud, biofilm formation, scale and corrosion product deposition [6]. As for some of inorganic materials strongly attached on the inside surface of tubes, e.g. calcium and magnesium salts, can not be effectively reduced by this technique. As a result, at the end of every sponge rubber ball cleaning period, there still exist a lot of residual fouling in the condensers, and the residual fouling will be accumulated continuously with the time. Where, the fouling can be cleaned by the Taprogge system is called soft fouling, and those can not be cleaned residual fouling is called hard fouling. When the residual fouling accumulated to some degree, the cleaning techniques that can eliminate them, such as chemistry cleaning method, should be used. Generally, the foul degree of heat exchanger is expressed as fouling thermal resistance, defined as the difference between rates of deposition and removal [6]. In this paper, the corresponding fouling thermal resistance of soft fouling and hard fouling expressed as Rfs and Rfh, respectively. Then, the condenser fouling thermal resistance Rf in any time is the sum of soft fouling thermal resistance and hard fouling thermal resistance, expressed as Eq. (1). ( ) ( ) ( ) ( ) ( ) ( ) 0 0 0 R t R t R t R t R t t R t t f fs fh f fs fh ? ? ? ? ? ? ? (1) where ( ) 0 R t f is the initial fouling. Fig. 1 periodic fouling evolution in power plant condensers Fig. 1 demonstrates the periodic evolution process of fouling in power plant condensers. In fact, the evolution process of fouling in a condenser is very complex, which is related to a great number of variables, such as condenser pressure, cooling water hardness, the velocity of the circulating water and the corresponding inlet and outlet temperatures, the non-condensing gases present in the condenser, and so on. The Rfs(t) and Rfh(t) expressed a very complex physical and chemical process, their accurate mathematic models are very hard to be obtained. Hence, measurement and prediction of fouling development is a very difficult task. Since the fouling evolution process is a very complex nonlinear dynamic system, the traditional techniques based on mathematic analysis, i.e. asymptotic fouling model, are not efficient to describe it [11]. SVMs, as a small sample method to deal with the highly nonlinear classification and regression problems based on statistic learning theory, is expected to be able to reproduce the nonlinear behavior of the system. 3. SVMs regression and parameters 3.1 SVMs regression SVMs are a group of supervised learning methods that can be applied to classification or regression. SVMs represent an extension to nonlinear models of the generalized portrait algorithm developed by Vladimir Vapnik [18]. The SVMs algorithm is based on the statistical learning theory and the Vapnik-Chervonenkis (VC) dimension introduced by Vladimir Vapnik and Alexey Chervonenkis [19]. Here, the SVMs regression is applied to forecast the fouling in power plant condensers. Let the given training data sets represented as ?( , ), ( , ), , ( , )? 1 1 2 2 n n D ? x y x y ? ? ? x y , where d i x ? R is an input vector, y R i ? is its corresponding desired output, and n is the number of training data. In SVMs, the original input space is mapped into a high dimensional space called feature space by a nonlinear mapping x ? g(x) . Let f (x) be the SVM outputs corresponding to input vector x. In the feature space, a linear function is constructed: f (x) ? wT g(x) ? b (2) where w is a coefficient vector, b is a threshold. The learning of SVMs can be obtained by minimization of the empirical risk on the training data. Where, ? -intensive loss function is used to minimize the empirical risk. The loss function is defined as L? (x, y, f ) ? y ? f (x) ? max(0, y ? f (x) ) e (3) where ? is a positive parameter to allow approximation errors smaller than ? , the empirical risk is ? n i emp i i L x y f n R w 1 ( , , ) 1 ( ) ? (4) Besides using ? -intensive loss, SVMs tries to reduce model complexity by minimizing 2 w , which can be described by slack variables. Introduce variables i ? and i , then SVMs regression is obtained as the following optimization problem: min ? ? ? ? n i i i w C 1 2 ( ? ) 2 1 ? ? (5) s.t. i i i y ? f (x ) ? ? , i i i f (x ) ? y ? ? , i ? , i ? 0 where C is a positive constant to be regulated. By using the Lagrange multiplier method [18], the minimization of (5) becomes the problem of maximizing the following dual optimization problem max ( ? )( ? ) ( , ) 2 1 ( ? ) ( ? ) 1 1 , 1 j j i j n i j i i n i i i i i n i i ? y ? ? ? ? ? ? ? ? ? K x x ? ? ? (6) s.t. ( ? ) 0 1 ? ? ? ? n i i i ? ? ,C = i , i ? =0 where i and i ? are Lagrange multipliers, and kernel ( , ) i j K x x is a symmetric function which is equivalent to the dot product in the feature space. The kernel ( , ) i j K x x is defined as the following. ( , ) ( ) ( ) j T i j i K x x ? g x g x (7) There are some kernels, i.e. polynomial kernel K(x, y) ? (x ? y ? 1) d and hyperbolic tangent kernel ( , ) tanh( ( ) ) 1 2 K x y ? c x ? y ? c can be used. Where the Gaussian function is used as the kernel. ) 2 ( , ) exp( 2 2 ? x y K x y ? ? ? (8) Replacing i i i ? ? ? ? ? ? and relation 0 ? ? ? ? i , then the optimization of (6) is rewritten as max ( , ) 2 1 1 1 , 1 j i j n i j i n i i i n i i ? y ? ? ? ? ? K X X ? ? ? ? ? (9) s.t. 0 1 ? ? ? n i i ? ,C ? i ? ? ? C The learning results for training data set D can be derived from equation (9). Note that only some of coefficients i ? are not zeros and the corresponding vectors x are called support vectors (SV). That is, only those vectors whose corresponding coefficients i i are not zero are SV. Then the regression function is expressed as equation (10). f x K x x b i j p i i i ? ? ? ( ) ( ? ) ( , ) 1 ? ? (10) It should be noted that p is the numbers of SV, and the constant b is expressed as ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? p i i i i i p i i i i i b y K x x y K x x 1 1 min ( ? ) ( , ) max ( ? ) ( , ) 2 1 ? ? ? ? (11) 3.2 SVM parameters The quality of SVMs models strongly depends on a proper setting of parameters and SVMs approximation performance is sensitive to parameters [25, 26]. Parameters to be regulated include hyper-parameters C, ? and kernel parameter? , if the Gaussian kernel is used [25]. The values of C, ? and ? are relate to the actual object model and there are not fixed for different data set. So the problem of parameter selection is complicated. The values of parameter C, ? and ? affect model complexity in a different way. The parameter C determines the trade-off between model complexity and the tolerance degree of deviations larger than ? . The parameter? controls the width of the ? -insensitive zone and can affect the numbers of SV in optimization problem. The kernel parameter? determines the kernel width and relates to the input range of the training data set. Here, parameters selection is regarded as compound optimization problem and an improved differential evolution algorithm is proposed to select suitable parameters value. 4. Improved Differential Evolution Differential evolution (DE) algorithm is a simple but powerful population-based stochastic search technique for solving global optimization problems [27]. DE has three operations: mutation, crossover and selection. The crucial idea behind DE is a scheme for generating trial vectors. Mutation and crossover are used to generate trial vectors, and selection then determines which of the vectors will survive into the next generation. The original DE algorithm is described in the following briefly. 4.1 Basic differential evolution Let S ? Rn be the search space of the problem under consideration. Then, the DE algorithm utilizes NP, n-dimensional vectors X x x xt S i NP in t i t i t i ( , , , ) , 1,2, , 1 2 ? ? ? ? ? as a population for each generation of the algorithm. t denotes one generation. The initial population is generated randomly and should cover the whole parameter space. In each population, two operators, namely mutation and crossover, are applied on each individual to yield a trial vector for each target vector. Then, a selection phase takes place to determine the trial vector enters the population of the next generation or not. For each target individual t i X , a mutant vector { 1 , , 1} 1 ?1 ? ? t ? n t t i V v ? v is determined by the following equation. ( ) 1 2 3 1 t r t r t r t i V ? ? X ? F ? X ? X (12) Where F ? 0 is a real parameter, called mutation constant, which controls the amplification of the difference vector ( ) 2 3 t r t r X ? X to avoid search stagnation. According to Storn and Price [27], the F is set in (0, 2]. 1 r , 2 r , 3 r are indexes, randomly selected from the set {1,2,, NP} . Note that indexes must be different from each other and from the running index i so that NP must be a least four. Following the mutation phase, the crossover (recombination) operator is applied on the population. For each mutant vector t ?1 i V , a trial vector { 1 , , 1} 1 ?1 ? ? t ? n t t i U u ? u is generated, using the following scheme. ? ? ? ? ? ? ? ? , ( ) ( ) 1 , ( ) ( ) 1 x rand j CR and j randn i v rand j CR or j randn i u t ij t t ij ij (13) Where j=1, 2, ?, n. rand( j) is the jth evaluation of a uniform random number generator within [0, 1]. CR is a crossover probability constant in the range [0, 1], which has to be determined previously by the user. randn(i) ? (1,2,,n) is a randomly chosen index which ensures that t ?1 i U gets at least one element from t ?1 i V . Otherwise, no new parent vector would be produced and the population would not alter. To decide whether the trial vector t ?1 i U should be a member of the population comprising the next generation, it is compared to the corresponding target vector t i X , and the greedy selection strategy is adopted in DE. The selection operator is as following. ? ? ? ? ? ? , otherwise 1 , ( 1 ) ( ) 1 t i t i t i t t i i X U f U f X X . (14) 4.2 Modification of Mutation From the mutation Eq. (12) we can see that in the original DE three vectors are chosen at random for mutation and the base vector is then chosen at random within the three, which has an exploratory effect but it slows down the convergence of DE. In order to accelerate the convergence speed, a modified mutation scheme is adopted. The randomly selected three vectors for mutation are sorted by ascending in terms of the fitness function value. The tournament best vector is t tb x , the better vector is t tm x and the worst vector is t tw x . For speeding up convergence, the base vector in the mutation equation should select t tb x , and the direction of difference vector should direct to t tm x , that is to choose ( t ) tw t tm x ? x as the difference vector. Then the new modified mutation strategy is as following Eq. (15). 1 ( t ) tw t tm t tb t i v ? ? x ? F ? x ? x . (15) After such modification, this process explores the region around each t tb x in the direction of ( t ) tw t tm x ? x for each mutated point. The mutation operator is not random search any more, but a determinate search. However, the vectors for mutation are selected randomly in the population space, so in the whole evolutionary process it is still a random search, which can ensure the global optimization performance of the algorithm [28]. 5 Optimization procedures of IDE for SVMs 5.1 Objective function The objective of SVMs parameters optimization is to minimize deviations between the outputs of training data and the outputs of SVMs. Where, the mean square error (MSE) is used as the performance criterion. 2 1 1 ( ( , ))2 1 ? ? ? ? ? ? ? ? K k k k y f x w K Obj (16) Where K is the number of training data, k y is the output of the kth training data, and f (x ,w) k is the output of SVMs correspond to input k x . Then the objective of the IDE is to search optimal parameter C, ? and ? to minimize Obj: min F(C,? ,? ) ? minObj (17) Generally, the search range of these parameters is C? [1, 1000], ? ? (0, 1], ? ? (0, 0.5]. For special problem, the search range is changeable. 5.2 Optimization procedures The searching procedures of the improved differential evolution (IDE) for optimization of SVMs parameters are shown as below. Step1: Input the training data and test data, select the Gaussian kernel function. Step2: Specify the number of population NP, the difference vector scale factor F, the crossover probability constant CR, and the maximum number of generations T. Initialize randomly the individuals, i.e. C, ? and ? , of the population and the trial vector in the given searching space. Set the current generation t=0. Step3: Use each individual as the control parameters of SVMs, train the SVMs using training data. Step4: Calculate the fitness value of each individual in the population using the objective function given by equation (17). Step5: Compare each individual?s fitness value and get the best fitness and best individual. Step6: Generate a mutant vector according to equation (15) for each individual. Step7: According to equation (13), do the crossover operation and yield a trial vector. Step8: Execute the selection operation in terms of equation (14) and generate a new population. Step9: t=t+1, return to Step3 until to the maximum number of generations. 6 Case study 6.1 Fouling prediction scheme The formation and development of fouling in condensers is influenced not only by cooling water hardness and turbidity but also by working conditions of condensers, such as velocity of the cooling water and the corresponding inlet and outlet temperatures, the saturation temperature of steam under entrance pressure of condenser, the non-condensing gases present in the condenser, and so on. According to the previous analysis of periodic fouling process of power plant condensers, the fouling can be classified as soft fouling and hard fouling. Therefore, two SVMs models are developed to forecast thermal resistance of soft and hard fouling, respectively. Then, the whole prediction fouling thermal resistance ( f R? ) in condenser is the sum of output of soft fouling prediction model ( fs R? ) and output of hard fouling prediction model ( fh R? ). Generally, the evolution of soft fouling is determined by the velocity (v), turbidity (d), inlet (Ti) and outlet temperatures (To) of cooling water, saturation temperature of steam under entrance pressure of condenser (Ts), and prediction time range (Tp) (the running time in a sponge rubber ball cleaning period). Therefore, these variables are chosen as inputs of the soft fouling thermal resistance predictive model. As for hard fouling of the class of calcium and magnesium salts, it is related to the residual fouling at the beginning and the end of previous sponge rubber ball cleaning period (corresponding thermal resistance is Rfb,n-1, Rfe,n-1, respectively), hardness of cooling water (s), saturation temperature of steam under entrance pressure of condenser (Ts), and the accumulating running time of condenser (Ta). Hence, those variables are chosen as the inputs of hard fouling thermal resistance prediction model. The soft and hard fouling prediction model based on SVMs illustrated in Fig. 2 and Fig. 3, respectively. ( , ) 1 K x x ( , ) 2 K x x ( , ) p?1 K x x ( , ) p K x x 1 1 2 2 1 1 ? ? ? ? p p ? ? p p ( , ) 1 K x x ( , ) 2 K x x ( , ) p?1 K x x ( , ) p K x x S b Ts 1 1 2 2 1 1 ? ? ? ? p p ? ? p p Ta Rfh Rfb,n-1 R fe,n-1 ? ^ Fig. 2 Soft fouling prediction model Fig. 3 Hard fouling prediction model The parameters of the two prediction models are optimized by the IDE algorithm. Fig. 4 illustrates the fouling prediction model using SVMs optimized by IDE. ? Fig. 4 fouling prediction model based on SVMs optimized by IDE 6.2 Experiment results In this section, experiments on N-3500-2 condenser (300MW) in Xiangtan thermal power plant are carried out to prove the effectiveness of the proposed approach. The cooling water of this plant is river water that pumped from the Xiangjiang river. The Taprogge systems are installed in the plant to on-line clean the condensers. At present, the condenser is cleaned every two days using the Taprogge system, and every cleaning time is about 6 hours. Obviously, the fitted cleaning period is not optimal, because the fouling accumulating process is dynamic changing with the operating conditions changing. The experiment system consists of sensors for operating condition parameters measuring, data acquisition system, PC-type computer, etc. A set of 1362 real-time running data in different operating conditions in 84 cleaning periods is collected to train and optimize the SVMs model for fouling prediction, another set of 300 data is chosen for model verification. The proposed IDE is used to optimize the SVMs parameters. The control parameters of IDE are the following. The number of population is 30, the crossover probability constant CR is 0.5, the mutation factor F is 0.5, and the maximum number of generations is 100. The selection of above parameters is based on the literature [27] and [28]. After application of IDE, the optimal SVMs parameters of soft fouling prediction model are C=848, ? =0.513, ? =0.0117, the optimal SVMs parameters of hard fouling prediction model are C=509, ? =0.732, ? =0.0075. The velocity, turbidity, and inlet temperature of cooling water is different in summer and winter, the evolution of fouling in condensers is also different in the two seasons. In the experiments, four sponge rubber ball cleaning periods in different seasons are investigated. Among them, three periods, i.e. the first, 18th and 40th period, are in summer, and the other period is in winter. The hardness and turbidity of cooling water is 56mg/L and 17mg/L in summer, and is 56mg/L and 29mg/L in winter. To demonstrate the effectiveness of the proposed approach, the comparison between the SVMs model, T-S fuzzy logic model [17] and asymptotic model is considered. The asymptotic model is obtained by probability analysis method, and the corresponding expression is the following [17]. ( ) ? 41.3?[1? ?(t ?1.204) /14.57 ] f R t e (17) Table 1 and Table 2 show the fouling thermal resistance prediction results of the above three models in the first and the 18th cleaning periods, respectively. From the Table 1 and Table 2, we can see that compared with tradition asymptotic model and T-S fuzzy logic model, the SVMs based prediction model has higher prediction precision. Fig. 5 and Fig. 6 show the predicted fouling thermal resistance evolution based on the optimized SVMs model and asymptotic model. Fig.6 clearly shows that the asymptotic model is not able to forecast the fouling evolution process at the beginning stage of the 18th cleaning period, the reason is that the residual fouling in the periodic fouling formation process is not considered in the asymptotic models. Table 1 fouling thermal resistance prediction results in the first cleaning period Running time Tpa (hour) Operating conditions Measuring values Rf (K.m2/kW) Prediction values (K.m2/kW) Relative error v(m/s) Ti(?) Ts(?) SVMs model T-S model Asymptotic model SVMs model T-S model Asymptotic model 0 2.0 19.1 33.2 0.0258 0.0260 0.0258 0.62 0 5 2.0 18.5 33.3 0.0995 0.0992 0.1018 0.0947 0.26 2.31 4.82 10 2.0 15.6 31.9 0.2028 0.2037 0.2007 0.1872 0.45 1.04 7.69 15 2.0 14.3 31.6 0.2501 0.2494 0.2411 0.2528 0.27 3.6 1.08 20 2.0 15.5 33.5 0.2865 0.2864 0.2830 0.2993 0.03 1.22 4.48 25 2.0 15.5 34.0 0.3174 0.3172 0.3123 0.3323 0.06 1.61 4.69 30 2.0 16.1 34.8 0.3420 0.3393 0.3321 0.3558 0.79 2.89 4.04 35 2.0 14.4 34.6 0.3567 0.3562 0.3497 0.3724 0.14 1.96 4.40 40 2.0 14.2 34.9 0.3722 0.3736 0.3600 0.3842 0.37 3.28 3.22 Table 2 fouling thermal resistance prediction results of the 18th cleaning period Running time Ta (hour) Operating conditions Measuring values Rf (K.m2/kW) Prediction values (K.m2/kW) Relative error v(m/s) Ti(?) Ts(?) SVMs model T-S model Asymptotic model SVMs model T-S model Asymptotic model 632 2.0 14.0 29.8 0.0774 0.0791 0.074 2.26 0 637 2.0 14.2 30.9 0.1772 0.1773 0.1850 0.0947 0.06 4.40 46.56 642 2.0 12.5 30.4 0.2474 0.2479 0.2438 0.1872 0.21 1.46 24.33 647 2.0 11.9 30.4 0.2898 0.2908 0.2955 0.2528 0.36 1.97 12.77 652 2.0 10.6 30.1 0.3230 0.3222 0.3354 0.2993 0.25 3.84 7.34 657 2.0 11.4 31.5 0.3447 0.3437 0.3525 0.3323 0.28 2.26 3.60 662 2.0 10.2 31.2 0.3655 0.3652 0.3648 0.3558 0.08 0.19 2.65 667 2.0 10.7 32.0 0.3831 0.3815 0.3767 0.3724 0.42 1.67 2.79 672 2.0 11.8 33.5 0.3985 0.3978 0.3912 0.3842 0.18 1.83 3.59 To eliminate the influence of residual fouling and improve the prediction precision, an improved asymptotic models are i

Violent Music Lyrics Increase Aggressive Thoughts and Feelings :: violence, music, agression, psychology,

Music, a popular outlet amongst the teen community for exploring emotions and blowing off steam. Times have changed, and the way music and lyrics are perceived has developed in a violent fashion. According to new studies, that have occurred, violent music lyrics increase aggressive thoughts and feelings. I chose this topic because music is such an influential part of our lives that it often dictates the mood we seize to exist in. If violent thoughts occur, what can come of it? Teens and the human populous have been draw to music, and the relief it gives off. As recent as the 1990’s, we’ve seen an increase in explicit and violent lyrics and deviant behavior in the music industry surrounding such genres as heavy metal, rock, rap, and gangster rap. During this past decade, lyrics are becoming more violent and sexually explicit. It is approximated that teens listen to an average of 40 hours of music a week, and somewhere along the way, a child will hear something derogatory, or cruel. Along with this, teens don’t necessarily interpret what is said through lyrics in the right manner. In one study, only 30% of those somewhat questionable lyrics by popular bands were comprehended by the teen population. Although lyrics are seen as the most likely reason for teen violence to occur, it is questionable as to why? Lyrics allow the listener to interpret the music in any which way they so choose, and for the majority of the time, the listener doesn’t process the lyrics effectively. Lyrics are under the most scrutiny due to explicit content, but when rapper ‘Precise’ was interviewed, he said he didn’t feel the need to kill any one, or bring harm to anyone. Video games, where are actually interactive, force the participant to do the killing, punching, or any other method of violence the game brings, which is what should raise concern to parents and media across the nation. In order for this problem to adjust over time, much work will be necessary. I believe that our country as a whole should focus not so much on the content of the lyrics, but who the musical artists themselves are. Just because lyrics are profound doesn’t mean that the artist believes in them, they could be relating to previous acts that have occurred in their lives, or speaking freely on the problems our society is faced with. It would be beneficial for our country if a sensor council or committee was founded to screen all songs and albums before they’re released, in order to identify them with a warning label or not