Saturday, September 26, 2009

tODAYS bIRTHDAY

WHO BORN TODAY

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Monday, September 14, 2009

Ivan Pavlov (1849)


Pavlov was a Russian physiologist, psychologist, physician, and Nobel Prize recipient. In the 1890s, he was investigating the gastric function of dogs when he noticed that some of the animals began salivating before actually receiving their food. He made this phenomenon the focus of his research, thereby discovering the conditioned reflex, which has greatly influenced both science and popular culture. The phrase "Pavlov's dog" is often used to describe people who do what?

BIOGRAPHY
Ivan Petrovich Pavlov (Russian: Иван Петрович Павлов, September 14, 1849 – February 27, 1936) was a Russian physiologist, psychologist, and physician. He was awarded the Nobel Prize in Physiology or Medicine in 1904 for research pertaining to the digestive system. Pavlov is widely known for first describing the phenomenon now known as classical conditioning in his experiments with dogs.

Life and research
Pavlov was born in Ryazan, Russia. He began his higher education as a student at the Ryazan Ecclesiastical Seminary, but then dropped out and enrolled in the University of St. Petersburg to study the natural sciences. He received his doctorate in 1879.

In the 1890s, Pavlov was investigating the gastric function of dogs by externalizing a salivary gland so he could collect, measure, and analyze the saliva many had in response to food under different conditions. He noticed that the dogs tended to salivate before food coated with chili powder was actually delivered to their mouths, and set out to investigate this "psychic secretion", as he called it. He decided that this was more interesting than the chemistry of saliva, and changed the focus of his research, carrying out a long series of experiments in which he manipulated the stimuli occurring before the presentation of food. He thereby established the basic laws for the establishment and extinction of what he called "conditional reflexes" — i.e., reflex responses, like salivation, that only occurred conditionally upon specific previous experiences of the animal. These experiments were carried out in the 1890s and 1900s, and were known to western scientists through translations of individual accounts, but first became fully available in English in a book published in 1927.

Unlike many pre-revolutionary scientists, Pavlov was highly regarded by the Soviet government, and he was able to continue his researches until he reached a considerable age. Moreover, he was praised by Lenin and as a Nobel laureate he was seen as a valuable political asset.

After the murder of Sergei Kirov in 1934, Pavlov wrote several letters to Molotov criticizing the mass persecutions which followed and asking for the reconsideration of cases pertaining to several people he knew personally.

In later life he was particularly interested in trying to use conditioning to establish an experimental model of the induction of neuroses. He died in Leningrad. His laboratory in Saint Petersburg has been carefully preserved as a museum.

Conscious until his very last moment, Pavlov asked one of his students to sit beside his bed and to record the circumstances of his dying. He wanted to create unique evidence of subjective experiences of this terminal phase of life. The great scientific courage of Pavlov is exhibited by this story: he tried to learn, and to increase knowledge of physiology, even on his deathbed.

Reflex system research
Pavlov contributed to many areas of physiology, neurology and psychology. Most of his work involved research in temperament, conditioning and involuntary reflex actions.

Pavlov performed and directed experiments on digestion which earned him the 1904 Nobel Prize in Physiology and Medicine[4] Experiments included surgically extracting portions of the digestive system from animals, severing nerve bundles to determine the effects, and implanting fistulas between digestive organs and an external pouch to examine the organ's contents. This research served as a base for broad research on the digestive system.

Further work on reflex actions involved involuntary reactions to stress and pain. Pavlov extended the definitions of the four temperament types under study at the time: phlegmatic, choleric, sanguine, and melancholic. Pavlov and his researchers observed and began the study of transmarginal inhibition (TMI), the body's natural response of shutting down when exposed to overwhelming stress or pain. This research showed how all temperament types responded to the stimuli the same way, but different temperaments move through the responses at different times. He commented "that the most basic inherited difference. .. was how soon they reached this shutdown point and that the quick-to-shut-down have a fundamentally different type of nervous system."

Carl Jung continued Pavlov's work on TMI and correlated the observed shutdown types in animals with his own introverted and extroverted temperament types in humans. Introverted persons, he believed, were more sensitive to stimuli and reached a TMI state earlier than their extroverted counterparts. This continuing research branch is gaining the name highly sensitive persons.

William Sargant and others continued the behavioral research in mental conditioning to achieve memory implantation and brainwashing.
Legacy
Pavlov's term "conditional reflex" ("условный рефлекс") was mistranslated from the Russian as "conditioned reflex", and other scientists reading his work concluded that since such reflexes were conditioned, they must be produced by a process called conditioning. As Pavlov's work became known in the West, particularly through the writings of John B. Watson, the idea of "conditioning" as an automatic form of learning became a key concept in the developing specialism of comparative psychology, and the general approach to psychology that underlay it, behaviorism. The British philosopher Bertrand Russell was an enthusiastic advocate of the importance of Pavlov's work for philosophy of mind.

Pavlov's research on conditional reflexes greatly influenced not only science, but also popular culture. The phrase "Pavlov's dog" is often used to describe someone who merely reacts to a situation rather than use critical thinking. Pavlovian conditioning was a major theme in Aldous Huxley's dystopian novel, Brave New World, and also to a large degree in Thomas Pynchon's Gravity's Rainbow.

It is popularly believed that Pavlov always signaled the occurrence of food by ringing a bell. However, his writings record the use of a wide variety of stimuli, including whistles, metronomes, tuning forks, and a range of visual stimuli, in addition to ringing a bell.

Catania cast doubt on whether Pavlov ever actually used a bell in his famous experiments. Littman tentatively attributed the popular imagery to Pavlov’s contemporaries Vladimir Mikhailovich Bekhterev and John B. Watson, until Thomas found several references that unambiguously stated Pavlov did, indeed, use a bell.
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Saturday, September 12, 2009

Jesse Owens (1913)

Owens was an African-American track-and-field star famous for his performance at the 1936 Berlin Olympic Games, where he claimed 4 gold medals in the presence of Adolf Hitler and Nazi leaders, who had hoped the games would promote their idea of racial superiority. Though hailed as a hero, Owens faced segregation upon his return to the US, even suffering the humiliation of having to use a freight elevator to attend a post-parade reception in his honor. How did he earn a living after the Olympics?

Medal record
Men's athletics
Gold 1936 Berlin 100 m
Gold 1936 Berlin 200 m
Gold 1936 Berlin 4 x 100 m relay
Gold 1936 Berlin Long jump





Biography
James Cleveland "Jesse" Owens (September 12, 1913 – March 31, 1980) was an American track and field athlete. He participated in the 1936 Summer Olympics in Berlin, Germany, where he achieved international fame by winning four gold medals: one each in the 100 meters, the 200 meters, the long jump, and as part of the 4x100 meter relay team.

Early years
James Cleveland Owens was born in 1913 in Lawrence County, Alabama to Henry and Emma Owens. When Owens was eight, his parents decided to move the family to Cleveland, Ohio. Owens was the grandson of a slave and the son of a sharecropper. He was often sick with what his mother reportedly called "the devil's cold". He was given the name Jesse by a teacher in Cleveland who did not understand his accent when the young boy said he was called J.C.

Life in Cleveland was not prosperous for the family. Owens had taken different jobs in his spare time: He delivered groceries, loaded freight cars and worked in a shoe repair shop.During this period Owens realized that he had a passion for running.

Throughout his life Owens attributed the success of his athletic career to the encouragement of Charles Riley, his junior-high track coach at Fairview Junior High, who had put him on the track team (see also Harrison Dillard, a Cleveland athlete inspired by Owens). Since Owens worked in a shoe repair shop after school, Riley allowed him to practice before school instead.

Owens first came to national attention when, as a student of East Technical High School in Cleveland, he equalled the world record of 9.4 seconds in the 100-yard dash and long-jumped 24 feet 9 ½ inches (7.56 m) at the 1933 National High School Championship in Chicago.

Post Olympics

After the games had finished, Owens was invited, along with the rest of the team, to compete in Sweden. However he decided to capitalise on his success by returning to the United States to take up some of the lucrative commercial offers he was receiving. American athletic officials were furious and withdrew his amateur status, ending his career immediately. Owens was livid: "A fellow desires something for himself," he said.

With no sporting appearances to bolster his profile, the lucrative offers never quite materialised. Instead he was forced to try to make a living as a sports promoter, essentially an entertainer. He would give local sprinters a ten or twenty yard start and beat them in the 100 yd (91 m) dash. He also challenged and defeated racehorses although as he revealed later, the trick was to race a high-strung thoroughbred horse that would be frightened by the starter's pistol and give him a good jump.

He soon found himself running a dry-cleaning business and then even working as a gas station attendant. He eventually filed for bankruptcy but, even then, his problems were not over and in 1966 he was successfully prosecuted for tax evasion. At rock bottom, the rehabilitation began and he started work as a U.S. 'goodwill ambassador'. Owens traveled the world and spoke to companies like the Ford Motor Company and the United States Olympic Committee. He would always stress the importance of religion, hard work, and loyalty. In 1968, he received some criticism for supporting the racially turbulent XIX Olympic Games held that year.

The Jesse Owens Foundation provides information, materials, and direction for research on the life of Jesse Owens. It is governed by a Board of Directors with oversight provided by a Managing Director. The Foundation is supported by special events and contributions from the community at large. Since 1983, the Foundation has provided more than 350 young people throughout the country with support for their college education.

Jesse Owens was inducted to the Alabama Sports Hall of Fame in 1970. He was awarded the Presidential Medal of Freedom in 1976 by Gerald Ford and (posthumously) the Congressional Gold Medal by George H. W. Bush on March 28, 1990. In 1984, a street in Berlin was renamed for him, and the Jesse Owens Realschule/Oberschule (a secondary school) is in Berlin-Lichtenberg. His birthplace in Oakville dedicated a park in his honor in 1996, at the same time the Olympic Torch came through the community, 60 years after his Olympic triumph.

A pack-a-day smoker for 35 years, Owens died of lung cancer at age 66 in Tucson, Arizona. He is buried in Oak Woods Cemetery in Chicago.

Trivia
* The runner he beat in the 200m at the 1936 Summer Olympics was Jackie Robinson's brother, Matthew "Mack" Robinson, who also tied the world record at the time.
* In 1984 a street close to the Olympic Stadium Berlin was renamed Jesse-Owens-Allee.
* Two U.S. postage stamps have been issued to honor Owens, one in 1990 and another in 1998.
* Additionally, in Phoenix, Arizona, there is the Jesse Owens Medical Plaza, named in his honor. It is located on the southeast corner of Baseline Rd. and Jesse Owens Parkway (another namesake).
* He was portrayed by Dorian Harewood in The Jesse Owens Story (1984).
* His great-nephew, Chris Owens, an American professional basketball player, is a member of German league team ALBA Berlin.[8]
* Norwegian poet Nordahl Greig has written a poem called "Sprinterne", which is about him.
* In the movie Half Baked,Samson asked Thurgood to, "just call me Jesse Owens".

A few months before his death, Owens tried unsuccessfully to convince President Jimmy Carter not to boycott the 1980 Olympics held in Moscow, arguing that the Olympic ideal was to be a time-out from war and above politics.

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Friday, September 4, 2009

Louis XIV of France (1638)


Louis XIV of France known as the "Sun King," Louis XIV ruled over France for 72 years, longer than any other major European monarch. Reigning over a highly centralized state, he became the archetype of the absolute monarch. He fought several wars, built one of Europe's most elaborate palaces at Versailles, and was a great supporter of the arts. What influential French philosopher compared Louis XIV to the Roman emperor Augustus and called his reign an "eternally memorable age"?

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