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41 Stevens, John
[br]b. 1749 New York, New York, USAd. 6 March 1838 Hoboken, New Jersey, USA[br]American pioneer of steamboats and railways.[br]Stevens, a wealthy landowner with an estate at Hoboken on the Hudson River, had his attention drawn to the steamboat of John Fitch in 1786, and thenceforth devoted much of his time and fortune to developing steamboats and mechanical transport. He also had political influence and it was at his instance that Congress in 1790 passed an Act establishing the first patent laws in the USA. The following year Stevens was one of the first recipients of a US patent. This referred to multi-tubular boilers, of both watertube and firetube types, and antedated by many years the work of both Henry Booth and Marc Seguin on the latter.A steamboat built in 1798 by John Stevens, Nicholas J.Roosevelt and Stevens's brother-in-law, Robert R.Livingston, in association was unsuccessful, nor was Stevens satisfied with a boat built in 1802 in which a simple rotary steam-en-gine was mounted on the same shaft as a screw propeller. However, although others had experimented earlier with screw propellers, when John Stevens had the Little Juliana built in 1804 he produced the first practical screw steamboat. Steam at 50 psi (3.5 kg/cm2) pressure was supplied by a watertube boiler to a single-cylinder engine which drove two contra-rotating shafts, upon each of which was mounted a screw propeller. This little boat, less than 25 ft (7.6 m) long, was taken backwards and forwards across the Hudson River by two of Stevens's sons, one of whom, R.L. Stevens, was to help his father with many subsequent experiments. The boat, however, was ahead of its time, and steamships were to be driven by paddle wheels until the late 1830s.In 1807 John Stevens declined an invitation to join with Robert Fulton and Robert R.Living-ston in their development work, which culminated in successful operation of the PS Clermont that summer; in 1808, however, he launched his own paddle steamer, the Phoenix. But Fulton and Livingston had obtained an effective monopoly of steamer operation on the Hudson and, unable to reach agreement with them, Stevens sent Phoenix to Philadelphia to operate on the Delaware River. The intervening voyage over 150 miles (240 km) of open sea made Phoenix the first ocean-going steamer.From about 1810 John Stevens turned his attention to the possibilities of railways. He was at first considered a visionary, but in 1815, at his instance, the New Jersey Assembly created a company to build a railway between the Delaware and Raritan Rivers. It was the first railway charter granted in the USA, although the line it authorized remained unbuilt. To demonstrate the feasibility of the steam locomotive, Stevens built an experimental locomotive in 1825, at the age of 76. With flangeless wheels, guide rollers and rack-and-pinion drive, it ran on a circular track at his Hoboken home; it was the first steam locomotive to be built in America.[br]Bibliography1812, Documents Tending to Prove the Superior Advantages of Rail-ways and Steam-carriages over Canal Navigation.He took out patents relating to steam-engines in the USA in 1791, 1803, and 1810, and in England, through his son John Cox Stevens, in 1805.Further ReadingH.P.Spratt, 1958, The Birth of the Steamboat, Charles Griffin (provides technical details of Stevens's boats).J.T.Flexner, 1978, Steamboats Come True, Boston: Little, Brown (describes his work in relation to that of other steamboat pioneers).J.R.Stover, 1961, American Railroads, Chicago: University of Chicago Press.Transactions of the Newcomen Society (1927) 7: 114 (discusses tubular boilers).J.R.Day and B.G.Wilson, 1957, Unusual Railways, F.Muller (discusses Stevens's locomotive).PJGR -
42 Stuart, James
SUBJECT AREA: Mechanical, pneumatic and hydraulic engineering[br]b. 2 January 1843 Balgonie, Fife, Scotlandd. 12 October 1913 Norwich, Norfolk, England[br]Scottish engineer and educator.[br]James Stuart established the teaching of engineering as a university discipline at Cambridge. He was born at Balgonie in Fife, where his father managed a linen mill. He attended the University of St Andrews and then studied mathematics at Cambridge University. In 1867 he took up a post as Assistant Tutor at Trinity College, Cambridge, where his skills as a teacher were quickly recognized. The University was at that time adapting itself to the new systems of instruction recommended by the Royal Commission on university reform in the 1850s, and Stuart took an active part in the organization of a new structure of inter-collegiate lecture courses. He made an even more significant contribution to the establishment of extramural courses from which the Cambridge University extension lecture programme developed. This began in 1867, when Stuart took adult classes in Manchester and Crewe. The latter, in particular, brought him into close contact with those involved in practical mechanics and stimulated his interest in the applied sciences. In 1875 he was elected to the newly created Chair of Mechanism and Engineering in Cambridge, and he set out energetically to recruit students and to build up a flourishing unit with its own workshop and foundry, training a new generation of engineers in the applied sciences.In November 1884 Stuart was elected to Parliament and embarked on an active but somewhat undistinguished career in politics as a radical Liberal, becoming amongst other things a keen supporter of the women's suffrage movement. This did not endear him to his academic colleagues, and the Engineering School suffered from neglect by Stuart until he resigned the Chair in 1890. By the time he left, however, the University was ready to recognize Engineering as a Tripos subject and to accept properly equipped teaching laboratories, so that his successor J.A. Ewing was able to benefit from Stuart's pioneering work. Stuart continued his political activities and was appointed a Privy Councillor in 1909. He married Elizabeth Colman after resigning the Chair, and on the death of his father-in-law in 1898 he moved to Norwich to take on the direction of the family mustard firm, J. \& J.Colman Ltd.[br]Further ReadingHilken, 1967, Engineering at Cambridge, Ch. 3, pp. 58–106.AB -
43 Tull, Jethro
SUBJECT AREA: Agricultural and food technology[br]b. 30 March 1674 Basildon, Essex, Englandd. February 1741 Hungerford, Berkshire, England[br]English farmer who developed and publicized a system of row crop husbandry.[br]Jethro Tull was born into an English landowning family. He was educated at St John's College, Oxford, but left without a degree at the age of 17. He then spent three years on the Grand Tour before returning to study law at Gray's Inn in London. After six years he was admitted to the Bar, but he never practised, moving instead to one of his father's farms near Oxford.Because of labour problems he chose to plant sainfoin (Onobrychis viciaefolia) as a forage crop because it required less frequent reseeding than grass. The seed itself was expensive and of poor fertility, so he began to experiment. He discovered that the depth of sowing as well as the planting rate influenced germination and the rate of growth, he found the optimum rate could be gained with one plant per ft2, a much lower density than could be achieved by broadcasting. His experiments created labour problems. He is traditionally and incorrectly credited with the invention of the seed drill, but he did develop and use a drill on his own farm to achieve the planting rate and depth he needed without having to rely on his workforce.In 1711 Tull became ill and went to France, having first sold his original farm and moved to "Properous", near Hungerford. In France he developed a husbandry technique that used a horse hoe to stir the soil between the rows of plants achieved with his drill. He incorrectly believed that his increased yields were the result of nutrients released from the soil by this method, whereas they were more likely to have been the result of a reduction in weed competition as a result of the repeated cultivation.[br]Bibliography1731, The New Horse-Hoeing Husbandry, or an Essay on the Principals of Tillage and Vegetation (sets out the ideas and innovations for which he was already well known).Further ReadingT.H.Marshall, 1929, "Jethro Tull and the new husbandry of the 18th century", Economic History Review 11:41–60 (the relevance and significance of Tull's work was already under discussion before his death; Marshall discusses the controversy).G.E.Fussell, 1973, Jethro Tull. His Influence on Mechanised Agriculture (presents a pro- Tull account).AP -
44 commit an offence
offence punishable by law — преступление, караемое по закону
military offence — воинский проступок; воинское преступление
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45 committed an offence
offence punishable by law — преступление, караемое по закону
military offence — воинский проступок; воинское преступление
English-Russian big medical dictionary > committed an offence
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46 compliance
"Meeting an organization's various obligations, which may arise from laws, regulations, rules, and many other legal instruments, such as court judgments, litigation, and even contracts. Specific and important examples of these obligations include the Sarbanes-Oxley Act (SOX) and the California Law on Notice of Security Breach, formerly known as SB-1386. These regulatory obligations may be created by many sources, such as national and local governments and from industry-specific oversight groups, such as the Payment Card Industry Data Security Standards."
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