Xem 1-20 trên 77 kết quả In the 19th century
  • Wilhelm's polished, classic watercolors and a stylized typeface intensify the invitingly nostalgic flavor of this tale set "many years ago." On a rocky New England beach, lonely Sarah is visited by a ghost-like boy, who tells her that she will soon have a best friend. On another day, the same figure returns and announces that he needs Sarah's help. Instructing her to bring her favorite toys, a pair of puppets, the boy takes her to a rundown house, where an anxious mother hovers over her feverish daughter, Angela. The puppets spring to life, putting on a show that revives and...

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  • Stereopsis is a vision process whose geometrical foundation has been known for a long time, ever since the experiments by Wheatstone, in the 19th century. Nevertheless, its inner workings in biological organisms, as well as its emulation by computer systems, have proven elusive, and stereo vision remains a very active and challenging area of research nowadays. In this volume we have attempted to present a limited but relevant sample of the work being carried out in stereo vision by researchers from around the world.

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  • Introduction: Chloroform exerts a suppressing effect on the central nervous system. It had been used as a general anaesthetic since the 19th century, but it disappeared, because of its hepatotoxicity and arrhythmia-inducing effects. It is now being used for industrial purposes, such as a solvent, extracting reagent, refrigerant and chemical material. Chloroform poisoning can be seen in accidental, suicidal [1] and homicidal cases.

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  • Dreams puzzled early man, Greek philosophers spun elaborate theories to explain human memory and perception, Descartes postulated that the brain was filled with "animal spirits," and psychology was officially deemed a "science" in the 19th century. In this Fifth Edition, B.R. Hergenhahn demonstrates that most of the concerns of contemporary psychologists are manifestations of themes that have been part of psychology for hundreds-or even thousands-of years.

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  • Mechanical engineering emerged as a field during the industrial revolution in Europe in the 18th century; however, its development can be traced back several thousand years around the world. Mechanical engineering science emerged in the 19th century as a result of developments in the field of physics. The field has continually evolved to incorporate advancements in technology, and mechanical engineers today are pursuing developments in such fields as composites, mechatronics, and nanotechnology.

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  • Writing in the 19th century about 16th century Scotland, Carlyle sums up the argument of the present essay about Africa today. We submit that peaceful power sharing, albeit with the ever present threat of the use of force, is preferable to persistent war and wrestling over the dubious spoils of corruption and plunder. Squabbling about loot grows no fruit. If Africa is to survive, as Scotland eventually did after John Knox and others had educated its people, it must reform its methods of power sharing. Proper parliaments are the key to that.

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  • The German question was a debate in the 19th century, especially during the Revolutions of 1848, over the best way to achieve the Unification of Germany.[1] From 1815–1866, about 37 independent German-speaking states existed within the German Confederation. The Großdeutsche Lösung ("Greater German solution")

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  • Public health achieved considerable health improvements in the 19th Century with for example, treatment and legislation relating to water supply, sewage disposal and safer food. In the last century this legacy was extended with improvements in nutrition, the introduction of antibiotics and the sulphonamide drugs, early childhood vaccinations, the introduction of legislation on the compulsory use of seat belt and tobacco controls and taxation etc.

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  • J. McCullough was a Scottish author and avid golfer of the late 19th century. His fame rests on two books, Golf in the Year 2000, or, What we are coming to (1892) and Golf: Containing Practical Hints, with Rules of the Game (1899). McCullough wrote his latter book under "J. McCullough" and his earlier one under the pseudonym "J.A.C.K." Sources conflict as to whether his first name was Jack or Jay, and most other biographical information on him is completely lacking.

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  • Solar cells are optoelectronic devices that convert the energy of solar radiation directly into electricity by the photovoltaic (PV) effect. Assemblies of cells electrically connected together are known as PV modules, or solar panels. The photovoltaic effect was first recognized in the 19th century but the modern PV cells were developed in the mid-1950s. The practical application of photovoltaics started to provide energy for orbiting satellites.

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  • The Moonstone (1868) by Wilkie Collins is a 19th-century British epistolary novel, generally considered the first detective novel in the English language. The story was originally serialized in Charles Dickens' magazine All the Year Round. The Moonstone and The Woman in White are considered Wilkie Collins' best novels. Besides creating many of the characteristics of detective novels, The Moonstone also represented Collins' social opinions by his treatment of the Indians and the servants in the novel.

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  • Explores public and government involvement in combating global warming, and reviews conservation programs that have been developed by countries, international institutions, private organizations, and individuals.Global warming is the rising average temperature of Earth's atmosphere and oceans since the late 19th century and its projected continuation.

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  • Fourier Theorem: In the early 19th century, the French mathematician Jean-Baptiste Fourier states that: Any periodic waveform can be expressed as the sum of sine waves with frequencies at integer or harmonic multiples of the fundamental frequency of the waveform and with appropriate maximum amplitudes and phases.

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  • Drilling operations are perhaps the most popular machining process being undertaken today, with their origins being traced back to cutting tool developments in North America in the 19th century. In 1864 toward the latter part of the American Civil War, Steven Morse (i.e. later to design the significant ‘Morse taper’ – for accurate location of the ‘sleeved drills’ into their mating machine tool spindles) founded the Morse Twist Drill and Machine Company in the ‘North’.

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  • Seventh, the idea of slicing a view with movements into small dissections, each of a fraction of a second, combined with the idea that when this would be shown the audience would see the movement because of the persistence of vision, was important to cinema. The notion of the persistence of vision is old, and was used in several of the visual gadgets of the 19th century, such as the Thaumatrope and the projection of a cartoon. The idea to dissect a view, however, was newer, and started with the photographs of Marey to capture the movement of...

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  • Raw materials mark the beginning of a value-added chain. In times of increasing globalization their availability is a precondition for prosperity, productivity and development of a country’s economy. Raw materials have always been needed for many purposes. Global demand had its origin in the Bronze and Iron Ages and increased exponentially during the Industrial Revolution in the 19th Century. Worldwide demand for raw materials rapidly increased in the 20th Century, caused by the explosive growth of the world population and global economic productivity.

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  • Scientific and technological advances have had profound effects on human life. In the 19th century, most families could expect to lose one or more children to disease. Today, in the United States and other developed countries, the death of a child from disease is uncommon. Every day we rely on technologies made possible through the application of scientific knowledge and processes.

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  • EXERCISE Choose the best verb or noun from the chart to complete each sentence. Remember to use the correct verb tenses and singular or plural noun forms. 1) In the 19th century, parents realized that they had to take care of their children’s health and try to give them a good ………………………. Before that, most people did not go to school. 2) The ………………………. of the world is increasing every year. In the year 2005 there will be at least 7.2 billion people on the earth. 3) When people in North America ………………………. themselves to you for the first...

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  • There are two enumerative theories of maps from curves to curves. Our goal here is to study their relationship. All curves in the paper will be projective over C. The first theory, introduced in the 19th century by Hurwitz, concerns the enumeration of degree d covers, π : C → X, of nonsingular curves X with specified ramification data. In 1902, Hurwitz published a closed formula for the number of covers,

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  • The Industrial Revolution demonstrated the growing ability to organize and control the production of farms, mines, and factories. What had been relatively simple tasks became increasingly precise and elaborate systems. However with the growing complexity of economic and social life came a growing need to organize and manipulate the vast torrent of information produced by society. In the 19th century, pioneers such as Charles Babbage and Herman Hollerith designed and to some extent implemented mechanical systems for data processing.

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