|منتدى البحوث العلمية - بحوث كاملة - تقارير جاهزة مطويات , مطويات جاهزه , تقارير كامله , بحث علمي جاهز , بحوث علميه جاهزه , مقالات , بحوث , تقارير|
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|06-05-2012, 05:59 AM||المشاركة رقم: 1|
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منتدى البحوث العلمية - بحوث كاملة - تقارير جاهزة |
تقرير عن المواصلات بالانجليزي
The modern history of road transport also involves the development of new vehicles such as new models of horse-drawn vehicles, bicycles, motor cars, motor trucks and electric vehicles.
In introduction: Transport or transportation is the movement of people and goods from one place to another. The term is derived from the Latin Trans ("across") and portage ("to carry"). Industries which have the business of providing equipment, actual transport, transport of people or goods and services used in transport of goods or people make up a large broad and important sector of most national economies, and are collectively referred to as transport industries. History of transport the history of transport evolved with the development of human culture. Long distance walking tracks developed as trade routes in Paleolithic times. For most of human history the only forms of transport apart from walking were or transport in small boats. Road transport the first earth tracks were created by humans carrying goods and often followed game trails. Tracks would be naturally created at points of high traffic density. As animals were domesticated, horses, oxen and donkeys became an element in track-creation. With the growth of trade, tracks were often flattened or widened to accommodate animal traffic. Later, the travois, a frame used to drag loads, was developed. Animal-drawn wheeled vehicles probably developed in Sumer in the Ancient Near East in the 4th or 5th millennium BC and spread to Europe and India in the 4th millennium BC and China in about 1200 BC. The Romans had a significant need for good roads to extend and maintain their empire and developed Roman roads. In the Industrial Revolution, John Loudon McMillan (1756-1836) designed the first modern highways, using inexpensive paving material of soil and stone aggregate (macadam), and he embanked roads a few feet higher than the surrounding terrain to cause water to drain away from the surface. With the development of motor transport there was an increased need for hard-topped roads to reduce wash ways, bogging and dust on both urban and rural roads, originally using cobblestones and wooden paving in major western cities and in the early 20th century tar-bound macadam (tarmac) and concrete paving were extended into the countryside.
In the Stone Age primitive boats developed to permit navigation of rivers and for fishing in rivers and off the coast. It has been argued that boats suitable for a significant sea crossing were necessary for people to reach Australia an estimated 40,000-45,000 years ago. With the development of civilization, bigger vessels were developed both for trade and war. In the Mediterranean, galleys were developed about 3,000 BC. Galleys were eventually rendered obsolete by ocean-going sailing ships, such as the man-of-war, in the late 15th century. In the industrial revolution, first steam ships and later diesel- powered ships were developed. Eventually submarines were developed mainly for military purposes. Meanwhile specialized craft were developed for river and canal transport. Canals were developed in Mesopotamia circa 4000 BC. The Indus Valley Civilization in Pakistan and North India (from circa 2600 BC) had the first canal irrigation system in the world.  The longest canal of ancient times was the Grand Canal of China. It is 1794 kilometers (1115 miles) long and was built to carry the Emperor Yang Gang between Beijing and Hangzhou. The project began in 605, although the oldest sections of the canal may have existed since circa 486 BC. Canals were developed in The Middle Ages in Europe in Venice and the Netherlands. Pierre-Paul Racquet began to organize the construction of the 240 km-long Canal du Midi in France in 1665 and it was opened in 1681. In the Industrial Revolution, inland canals were built in England and later the United States before the development of railways. Specialized craft were also developed for fishing and later whaling. After that everyone walked Maritime history also deals with the development of navigation, oceanography, cartography and hydrograph.
The history of rail transport dates back nearly 500 years, and include systems with man or horse power and rails of wood (or occasionally stone). This was usually for moving coal from the mine down to a river, from where it could continue by boat, with a flanged wheel running on a rail. The use of cast iron plates as rails began in the 1760s, and was followed by systems (plate ways) where the flange was part of the rail. However, with the introduction of rolled wrought iron rails, these became obsolete.
Modern rail transport systems first appeared in England in the 1820s. These systems, which made use of the steam locomotive, were the first practical form of mechanized land transport, and they remained the primary form of mechanized land transport for the next 100 years.
The history of rail transport also includes the history of rapid transit and arguably monorail history.
Humanity's desire to fly likely dates to the first time man observed birds; an observation illustrated in the legendary story of Daedal us and Cirrus. Much of the focus of early research was on imitating birds, but through trial and error, balloons, airships, gliders and eventually aircraft and other types of flying machines were invented. The first generally recognized human flight took place in Paris in 1783. Jean-François Pilate de Rosier and Francois d ' Arlandes went 5 miles (8 km) in a hot air balloon invented by the Montgolfier brothers.
The Wright brothers made the first sustained, controlled and powered heavier-than-air flight on December 17, 1903.
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|06-05-2012, 08:18 PM||المشاركة رقم: 2|
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رد: تقرير عن المواصلات بالانجليزي
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