nature+called

SUBJECT AREA: Broadcasting, Telecommunications

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After early ambitions to become a professional cricketer, Appleton went to St John's College, Cambridge, where he studied under J.J.Thompson and Ernest Rutherford. His academic career interrupted by the First World War, he served as a captain in the Royal Engineers, carrying out investigations into the propagation and fading of radio signals. After the war he joined the Cavendish Laboratory, Cambridge, as a demonstrator in 1920, and in 1924 he moved to King's College, London, as Wheatstone Professor of Physics.

In the following decade he contributed to developments in valve oscillators (in particular, the "squegging" oscillator, which formed the basis of the first hard-valve time-base) and gained international recognition for research into electromagnetic-wave propagation. His most important contribution was to confirm the existence of a conducting ionospheric layer in the upper atmosphere capable of reflecting radio waves, which had been predicted almost simultaneously by Heaviside and Kennelly in 1902. This he did by persuading the BBC in 1924 to vary the frequency of their Bournemouth transmitter, and he then measured the signal received at Cambridge. By comparing the direct and reflected rays and the daily variation he was able to deduce that the Kennelly- Heaviside (the so-called E-layer) was at a height of about 60 miles (97 km) above the earth and that there was a further layer (the Appleton or F-layer) at about 150 miles (240 km), the latter being an efficient reflector of the shorter radio waves that penetrated the lower layers. During the period 1927–32 and aided by Hartree, he established a magneto-ionic theory to explain the existence of the ionosphere. He was instrumental in obtaining agreement for international co-operation for ionospheric and other measurements in the form of the Second Polar Year (1932–3) and, much later, the International Geophysical Year (1957–8). For all this work, which made it possible to forecast the optimum frequencies for long-distance short-wave communication as a function of the location of transmitter and receiver and of the time of day and year, in 1947 he was awarded the Nobel Prize for Physics.

He returned to Cambridge as Jacksonian Professor of Natural Philosophy in 1939, and with M.F. Barnett he investigated the possible use of radio waves for radio-location of aircraft. In 1939 he became Secretary of the Government Department of Scientific and Industrial Research, a post he held for ten years. During the Second World War he contributed to the development of both radar and the atomic bomb, and subsequently served on government committees concerned with the use of atomic energy (which led to the establishment of Harwell) and with scientific staff.

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SUBJECT AREA: Chemical technology, Synthetic materials, Textiles

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Cross was educated at the universities of London, Zurich and Manchester. It was at Owens College, Manchester, that Cross first met E.J. Bevan and where these two first worked together on the nature of cellulose. After gaining some industrial experience, Cross joined Bevan to set up a partnership in London as analytical and consulting chemists, specializing in the chemistry and technology of cellulose and lignin. They were at the Jodrell laboratory, Kew Gardens, for a time and then set up their own laboratory at Station Avenue, Kew Gardens. In 1888, the first edition of their joint publication A Textbook of Paper-making, appeared. It went into several editions and became the standard reference and textbook on the subject. The long introductory chapter is a discourse on cellulose.

In 1892, Cross, Bevan and Clayton Beadle took out their historic patent on the solution and regeneration of cellulose. The modern artificial-fibre industry stems from this patent. They made their discovery at New Court, Carey Street, London: wood-pulp (or another cheap form of cellulose) was dissolved in a mixture of carbon disulphide and aqueous alkali to produce sodium xanthate. After maturing, it was squirted through fine holes into dilute acid, which set the liquid to give spinnable fibres of "viscose". However, it was many years before the process became a commercial operation, partly because the use of a natural raw material such as wood involved variations in chemical content and each batch might react differently. At first it was thought that viscose might be suitable for incandescent lamp filaments, and C.H.Stearn, a collaborator with Cross, continued to investigate this possibility, but the sheen on the fibres suggested that viscose might be made into artificial silk. The original Viscose Spinning Syndicate was formed in 1894 and a place was rented at Erith in Kent. However, it was not until some skeins of artificial silk (a term to which Cross himself objected) were displayed in Paris that textile manufacturers began to take an interest in it. It was then that Courtaulds decided to investigate this new fibre, although it was not until 1904 that they bought the English patents and developed the first artificial silk that was later called "rayon". Cross was also concerned with the development of viscose films and of cellulose acetate, which became a rival to rayon in the form of "Celanese". He retained his interest in the paper industry and in publishing, in 1895 again collaborating with Bevan and publishing a book on Cellulose and other technical articles. He was a cultured man and a good musician. He was elected a Fellow of the Royal Society in 1917.

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SUBJECT AREA: Aerospace

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After serving in the British Army during the Boer War. Dunne returned home convinced that aeroplanes would be more suitable than balloons for reconnaissance work. He built models to test his ideas for a tailless design based on the winged seed of a Javanese climbing plant. In 1906 Dunne joined the staff of the Balloon Factory at Farnborough, where the Superintendent, Colonel J.E.Capper, was also interested in manned kites and aeroplanes. Since 1904 the colourful American "Colonel" S.F. Cody had been experimenting at Farnborough with manned kites, and in 1908 his "British Army Dirigible No. 1" made the first powered flight in Britain. Dunne's first swept-wing tailless glider was ready to fly in the spring of 1907, but it was deemed to be a military secret and flying it at Farnborough would be too public. Dunne, Colonel Capper and a team of army engineers took the glider to a remote site at Blair Atholl in Scotland for its test flights. It was not a great success, although it attracted snoopers, with the result that it was camouflaged. Powered versions made short hops in 1908, but then the War Office withdrew its support. Dunne and his associates set up a syndicate to continue the development of a new tailless aeroplane, the D 5; this was built by Short Brothers (see Short, Hugh Oswald) and flew successfully in 1910. It had combined elevators and ailerons on the wing tips (or elevons as they are now called when fitted to modern delta-winged aircraft). In 1913 an improved version of the D 5 was demonstrated in France, where the pilot left his cockpit and walked along the wing in flight. Dunne had proved his point and designed a stable aircraft, but his health was suffering and he retired. During the First World War, however, it was soon learned that military aircraft needed to be manoeuvrable rather than stable.

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SUBJECT AREA: Electricity, Electronics and information technology, Telecommunications

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At the age of 17 Hertz entered the Gelehrtenschule of the Johaneums in Hamburg, but he left the following year to obtain practical experience for a year with a firm of engineers in Frankfurt am Main. He then spent six months at the Dresden Technical High School, followed by year of military service in Berlin. At this point he decided to switch from engineering to physics, and after a year in Munich he studied physics under Helmholtz at the University of Berlin, gaining his PhD with high honours in 1880. From 1883 to 1885 he was a privat-dozent at Kiel, during which time he studied the electromagnetic theory of James Clerk Maxwell. In 1885 he succeeded to the Chair in Physics at Karlsruhe Technical High School. There, in 1887, he constructed a rudimentary transmitter consisting of two 30 cm (12 in.) rods with metal balls separated by a 7.5 mm (0.3 in.) gap at the inner ends and metallic plates at the outer ends, the whole assembly being mounted at the focus of a large parabolic metal mirror and the two rods being connected to an induction coil. At the other side of his laboratory he placed a 70 cm (27½ in.) diameter wire loop with a similar air gap at the focus of a second metal mirror. When the induction coil was made to create a spark across the transmitter air gap, he found that a spark also occurred at the "receiver". By a series of experiments he was not only able to show that the invisible waves travelled in straight lines and were reflected by the parabolic mirrors, but also that the vibrations could be refracted like visible light and had a similar wavelength. By this first transmission and reception of radio waves he thus confirmed the theoretical predictions made by Maxwell some twenty years earlier. It was probably in his experiments with this apparatus in 1887 that Hertz also observed that the voltage at which a spark was able to jump a gap was significantly reduced by the presence of ultraviolet light. This so-called photoelectric effect was subsequently placed on a theoretical basis by Albert Einstein in 1905. In 1889 he became Professor of Physics at the University of Bonn, where he continued to investigate the nature of electric discharges in gases at low pressure until his death after a long and painful illness. In recognition of his measurement of radio and other waves, the international unit of frequency of an oscillatory wave, the cycle per second, is now universally known as the Hertz.

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See also: Heaviside, Oliver

SUBJECT AREA: Automotive engineering, Electricity, Electronics and information technology, Metallurgy, Steam and internal combustion engines

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Kettering gained degrees in mechanical and electrical engineering from Ohio State University. He was employed by the National Construction Register (NCR) of Dayton, Ohio, where he devised an electric motor for use in cash registers. He became Head of the Inventions Department of that company but left in 1909 to form, with the former Works Manager of NCR, Edward A. Deeds, the Dayton Engineering Laboratories (later called Delco), to develop improved lighting and ignition systems for automobiles. In the first two years of the new company he produced not only these but also the first self-starter, both of which were fitted to the Cadillac, America's leading luxury car. In 1914 he founded Dayton Metal Products and the Dayton Wright Airplane Company. Two years later Delco was bought by General Motors. In 1925 the independent research facilities of Delco were moved to Detroit and merged with General Motors' laboratories to form General Motors Research Corporation, of which Kettering was President and General Manager. (He had been Vice-President of General Motors since 1920.) In that position he headed investigations into methods of achieving maximum engine performance as well as into the nature of friction and combustion. Many other developments in the automobile field were made under his leadership, such as engine coolers, variable-speed transmissions, balancing machines, the two-way shock absorber, high-octane fuel, leaded petrol or gasoline, fast-drying lacquers, crank-case ventilators, chrome plating, and the high-compression automobile engine. Among his other activities were the establishment of the Charles Franklin Kettering Foundation for the Study of Chlorophyll and Photosynthesis at Antioch College, and the founding of the Sloan- Kettering Institute for Cancer Research in New York City. He sponsored the Fever Therapy Research Project at Miami Valley Hospital at Dayton, which developed the hypertherm, or artificial fever machine, for use in the treatment of disease. He resigned from General Motors in 1947.

SUBJECT AREA: Chemical technology

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As well as receiving a formal education in law and literature, Lavoisier studied science under some of the leading figures of the day. This proved to be an ideal formation of the man in whom "man of science" and "public servant" were so intimately combined. His early work towards the first geological map of France and on the water supply of Paris helped to win him election to the Royal Academy of Sciences in 1768 at the youthful age of 25. In the same year he used some of his private income to buy a part-share in the "tax farm", a private company which leased from the Government the right to collect certain indirect taxes.

In 1772 Lavoisier began his researches into the related phenomena of combustion, respiration and the calcination or oxidation of metals. This culminated in the early 1780s in the overthrow of the prevailing theory, based on an imponderable combustion principle called "phlogiston", and the substitution of the modern explanation of these processes. At the same time, understanding of the nature of acids, bases and salts was placed on a sounder footing. More important, Lavoisier defined a chemical element in its modern sense and showed how it should be applied by drawing up the first modern list of the chemical elements. With the revolution in chemistry initiated by Lavoisier, chemists could begin to understand correctly the fundamental processes of their science. This understanding was the foundationo of the astonishing advance in scientific and industrial chemistry that has taken place since then. As an academician, Lavoisier was paid by the Government to carry out investigations into a wide variety of practical questions with a chemical bias, such as the manufacture of starch and the distillation of phosphorus. In 1775 Louis XVI ordered the setting up of the Gunpowder Commission to improve the supply and quality of gunpowder, deficiencies in which had hampered France's war efforts. Lavoisier was a member of the Commission and, as usual, took the leading part, drawing up its report and supervising its implementation. As a result, the industry became profitable, output increased so that France could even export powder, and the range of the powder increased by two-thirds. This was a material factor in France's war effort in the Revolution and the Napoleonic wars.

As if his chemical researches and official duties were not enough, Lavoisier began to apply his scientific principles to agriculture when he purchased an estate at Frechines, near Blois. After ten years' work on his experimental farm there, Lavoisier was able to describe his results in the memoir "Results of some agricultural experiments and reflections on their relation to political economy" (Paris, 1788), which holds historic importance in agriculture and economics. In spite of his services to the nation and to humanity, his association with the tax farm was to have tragic consequences: during the reign of terror in 1794 the Revolutionaries consigned to the guillotine all the tax farmers, including Lavoisier.

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SUBJECT AREA: Canals

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The nature of Longbotham's career before 1766 is unknown, although he was associated with Smeaton as a pupil and thus became acquainted with canal engineering. In 1766 he suggested a canal linking Leeds and Liverpool across the Pennines. The suggestion was accepted and in 1767–8 he surveyed the line of the Leeds \& Liverpool Canal. This was approved by the promoters and by Brindley, who had been called in as an assessor. The Act was obtained in 1770 and Longbotham was first appointed as Clerk of Works under Brindley as Chief Engineer. As the latter did not take up the appointment, Longbotham became Chief Engineer and from 1770 to 1775 was responsible for the design of locks and aqueducts. He also prepared contracts and supervised construction. Meanwhile, in 1768 he had proposed a canal from the Calder and Hebble to Halifax. In 1773 he was elected to the Smeatonian Society of Civil Engineers. As soon as a part of the Leeds and Liverpool Canal was opened he started a passenger packet service, but in 1775, after completing both 50 miles (80 km) of the canal and the Bradford Canal, he was dismissed from his post because of discrepancies in his accounts. However, in the early 1790s he again advised the Leeds and Liverpool proprietors, who were in difficulties on the summit level. Longbotham had colliery interests in the Uphol-land area of Wigan, and in 1787 he surveyed a proposed route for the Lancaster Canal. In 1792 he was also associated with the Grand Western Canal. Details of his later life are scarce, but it is known that he died in poverty in 1801 and that the Leeds \& Liverpool company paid his funeral expenses.

SUBJECT AREA: Photography, film and optics

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Coming from a prosperous family, Niepce was educated in a Catholic seminary and destined for the priesthood. The French Revolution intervened and Niepce became an officer in an infantry regiment. An attack of typhoid fever in Italy ended his military career, and he returned to France and was married. Returning to his paternal home in Chalon in 1801, he joined with his brother Claude to construct an ingenious engine called the pyréolophore, which they patented in 1807. The French Government also encouraged the brothers in their attempts to produce large quantities of indigo-blue dye from wood, a venture that was ultimately unsuccessful.

Nicéphore began to experiment with lithography, which led him to take an interest in the properties of light-sensitive materials. He pursued this interest after Claude moved to Paris in 1816 and is reported to have made negative images in a camera obscura using paper soaked in silver chloride. Niepce went on to experiment with bitumen of judea, a substance that hardened on exposure to light. In 1822, using bitumen of judea on glass, he produced a heliograph from an engraving. The first images from nature may have been made as early as 1824, but the world's earliest surviving photographic image was made in 1826. A view of the courtyard of Niepce's home in Chalon was captured on a pewter plate coated with bitumen of judea; an exposure of several hours was required, the softer parts of the bitumen being dissolved away by a solvent to reveal the image.

In 1827 he took examples of his work to London where he met Francis Bauer, Secretary of the Royal Society. Nothing came of this meeting, but on returning to France Niepce continued his work and in 1829 entered into a formal partnership with L.J.M. Daguerre with a view to developing their mutual interest in capturing images formed by the camera obscura. However, the partnership made only limited progress and was terminated by Niepce's death in 1833. It was another six years before the announcement of the first practicable photographic processes was made.

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SUBJECT AREA: Architecture and building, Civil engineering

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James Parker was a vicar at Northfleet in Kent. In experiments of an almost accidental nature he calcined some nodules of clay found on the beach on the Isle of Sheppey. From these he developed a cement which he called Roman, because he believed that this was the type of material the Romans made in ancient times, and which proved to be the basis of the cement industry in Britain, Parker's cement was better than any other so far produced, and was suited to engineering and architectural uses.

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SUBJECT AREA: Architecture and building

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Wright began his career in 1887 working in the Chicago offices of Adler \& Sullivan. He conceived a great admiration for Sullivan, who was then concentrating upon large commercial projects in modern mode, producing functional yet decorative buildings which took all possible advantage of new structural methods. Wright was responsible for many of the domestic commissions.

In 1893 Wright left the firm in order to set up practice on his own, thus initiating a career which was to develop into three distinct phases. In the first of these, up until the First World War, he was chiefly designing houses in a concept in which he envisaged "the house as a shelter". These buildings displayed his deeply held opinion that detached houses in country areas should be designed as an integral part of the landscape, a view later to be evidenced strongly in the work of modern Finnish architects. Wright's designs were called "prairie houses" because so many of them were built in the MidWest of America, which Wright described as a "prairie". These were low and spreading, with gently sloping rooflines, very plain and clean lined, built of traditional materials in warm rural colours, blending softly into their settings. Typical was W.W.Willit's house of 1902 in Highland Park, Illinois.

In the second phase of his career Wright began to build more extensively in modern materials, utilizing advanced means of construction. A notable example was his remarkable Imperial Hotel in Tokyo, carefully designed and built in 1916–22 (now demolished), with special foundations and structure to withstand (successfully) strong earthquake tremors. He also became interested in the possibilities of reinforced concrete; in 1906 he built his church at Oak Park, Illinois, entirely of this material. In the 1920s, in California, he abandoned his use of traditional materials for house building in favour of precast concrete blocks, which were intended to provide an "organic" continuity between structure and decorative surfacing. In his continued exploration of the possibilities of concrete as a building material, he created the dramatic concept of'Falling Water', a house built in 1935–7 at Bear Run in Pennsylvania in which he projected massive reinforced-concrete terraces cantilevered from a cliff over a waterfall in the woodlands. In the later 1930s an extraordinary run of original concepts came from Wright, then nearing 70 years of age, ranging from his own winter residence and studio, Taliesin West in Arizona, to the administration block for Johnson Wax (1936–9) in Racine, Wisconsin, where the main interior ceiling was supported by Minoan-style, inversely tapered concrete columns rising to spreading circular capitals which contained lighting tubes of Pyrex glass.

Frank Lloyd Wright continued to work until four days before his death at the age of 91. One of his most important and certainly controversial commissions was the Solomon R.Guggenheim Museum in New York. This had been proposed in 1943 but was not finally built until 1956–9; in this striking design the museum's exhibition areas are ranged along a gradually mounting spiral ramp lit effectively from above. Controversy stemmed from the unusual and original design of exterior banding and interior descending spiral for wall-display of paintings: some critics strongly approved, while others, equally strongly, did not.

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   1) A Unitary Search Process for All the Phenomena of Memory

   To what extent can we lump together what goes on when you try to recall: (1) your name; (2) how you kick a football; and (3) the present location of your car keys? If we use introspective evidence as a guide, the first seems an immediate automatic response. The second may require constructive internal replay prior to our being able to produce a verbal description. The third... quite likely involves complex operational responses under the control of some general strategy system. Is any unitary search process, with a single set of characteristics and inputoutput relations, likely to cover all these cases? (Reitman, 1970, p. 485)

   2) Semantic Memory Is a Mental Thesaurus

   [Semantic memory] Is a mental thesaurus, organized knowledge a person possesses about words and other verbal symbols, their meanings and referents, about relations among them, and about rules, formulas, and algorithms for the manipulation of these symbols, concepts, and relations. Semantic memory does not register perceptible properties of inputs, but rather cognitive referents of input signals. (Tulving, 1972, p. 386)

   3) The Development of Mnemonic Codes

   The mnemonic code, far from being fixed and unchangeable, is structured and restructured along with general development. Such a restructuring of the code takes place in close dependence on the schemes of intelligence. The clearest indication of this is the observation of different types of memory organisation in accordance with the age level of a child so that a longer interval of retention without any new presentation, far from causing a deterioration of memory, may actually improve it. (Piaget & Inhelder, 1973, p. 36)

   4) The Logic of Some Memory Theorization Is of Dubious Worth in the History of Psychology

   If a cue was effective in memory retrieval, then one could infer it was encoded; if a cue was not effective, then it was not encoded. The logic of this theorization is "heads I win, tails you lose" and is of dubious worth in the history of psychology. We might ask how long scientists will puzzle over questions with no answers. (Solso, 1974, p. 28)

   5) The Constituent Elements of Memory Theory

   We have iconic, echoic, active, working, acoustic, articulatory, primary, secondary, episodic, semantic, short-term, intermediate-term, and longterm memories, and these memories contain tags, traces, images, attributes, markers, concepts, cognitive maps, natural-language mediators, kernel sentences, relational rules, nodes, associations, propositions, higher-order memory units, and features. (Eysenck, 1977, p. 4)

   6) The Problem with the Memory Metaphor

   The problem with the memory metaphor is that storage and retrieval of traces only deals [ sic] with old, previously articulated information. Memory traces can perhaps provide a basis for dealing with the "sameness" of the present experience with previous experiences, but the memory metaphor has no mechanisms for dealing with novel information. (Bransford, McCarrell, Franks & Nitsch, 1977, p. 434)

   7) The Results of a Hundred Years of the Psychological Study of Memory Are Somewhat Discouraging

   The results of a hundred years of the psychological study of memory are somewhat discouraging. We have established firm empirical generalisations, but most of them are so obvious that every ten-year-old knows them anyway. We have made discoveries, but they are only marginally about memory; in many cases we don't know what to do with them, and wear them out with endless experimental variations. We have an intellectually impressive group of theories, but history offers little confidence that they will provide any meaningful insight into natural behavior. (Neisser, 1978, pp. 12-13)

   8) The Structure and Function of a Schema in Memory

   A schema, then is a data structure for representing the generic concepts stored in memory. There are schemata representing our knowledge about all concepts; those underlying objects, situations, events, sequences of events, actions and sequences of actions. A schema contains, as part of its specification, the network of interrelations that is believed to normally hold among the constituents of the concept in question. A schema theory embodies a prototype theory of meaning. That is, inasmuch as a schema underlying a concept stored in memory corresponds to the mean ing of that concept, meanings are encoded in terms of the typical or normal situations or events that instantiate that concept. (Rumelhart, 1980, p. 34)

   9) Competence and Performance in Theories of Memory

   Memory appears to be constrained by a structure, a "syntax," perhaps at quite a low level, but it is free to be variable, deviant, even erratic at a higher level....

   Like the information system of language, memory can be explained in part by the abstract rules which underlie it, but only in part. The rules provide a basic competence, but they do not fully determine performance. (Campbell, 1982, pp. 228, 229)

    10) Metaphors of Memory

   When people think about the mind, they often liken it to a physical space, with memories and ideas as objects contained within that space. Thus, we speak of ideas being in the dark corners or dim recesses of our minds, and of holding ideas in mind. Ideas may be in the front or back of our minds, or they may be difficult to grasp. With respect to the processes involved in memory, we talk about storing memories, of searching or looking for lost memories, and sometimes of finding them. An examination of common parlance, therefore, suggests that there is general adherence to what might be called the spatial metaphor. The basic assumptions of this metaphor are that memories are treated as objects stored in specific locations within the mind, and the retrieval process involves a search through the mind in order to find specific memories....

   However, while the spatial metaphor has shown extraordinary longevity, there have been some interesting changes over time in the precise form of analogy used. In particular, technological advances have influenced theoretical conceptualisations.... The original Greek analogies were based on wax tablets and aviaries; these were superseded by analogies involving switchboards, gramophones, tape recorders, libraries, conveyor belts, and underground maps. Most recently, the workings of human memory have been compared to computer functioning... and it has been suggested that the various memory stores found in computers have their counterparts in the human memory system. (Eysenck, 1984, pp. 79-80)

    11) Comparison of Primary Memory and Secondary Memory

   Primary memory [as proposed by William James] relates to information that remains in consciousness after it has been perceived, and thus forms part of the psychological present, whereas secondary memory contains information about events that have left consciousness, and are therefore part of the psychological past. (Eysenck, 1984, p. 86)

    12) Semantic Memory and Episodic Memory

   Once psychologists began to study long-term memory per se, they realized it may be divided into two main categories.... Semantic memories have to do with our general knowledge about the working of the world. We know what cars do, what stoves do, what the laws of gravity are, and so on. Episodic memories are largely events that took place at a time and place in our personal history. Remembering specific events about our own actions, about our family, and about our individual past falls into this category. With amnesia or in aging, what dims... is our personal episodic memories, save for those that are especially dear or painful to us. Our knowledge of how the world works remains pretty much intact. (Gazzaniga, 1988, p. 42)

    13) The Relation of Memory to Thinking

   The nature of memory... provides a natural starting point for an analysis of thinking. Memory is the repository of many of the beliefs and representations that enter into thinking, and the retrievability of these representations can limit the quality of our thought. (Smith, 1990, p. 1)

 

совет по экстренным изменениям
ECAB
(ITIL Service Transition)
Группа людей в составе совета по изменениям, которые принимают решения по экстренным изменениям. Решение о составе участников совета по экстренным изменениям может быть принято непосредственно при организации совещания. Необходимость участия определяется исходя из сути срочного изменения.
[Словарь терминов ITIL версия 1.0, 29 июля 2011 г.]

EN

emergency change advisory board
ECAB
(ITIL Service Transition)
A subgroup of the change advisory board that makes decisions about emergency changes. Membership may be decided at the time a meeting is called, and depends on the nature of the emergency change.
[Словарь терминов ITIL версия 1.0, 29 июля 2011 г.]

Тематики

• информационные технологии в целом

Синонимы

• ECAB

EN

• emergency change advisory board
• ECAB

 

совет по экстренным изменениям
ECAB
(ITIL Service Transition)
Группа людей в составе совета по изменениям, которые принимают решения по экстренным изменениям. Решение о составе участников совета по экстренным изменениям может быть принято непосредственно при организации совещания. Необходимость участия определяется исходя из сути срочного изменения.
[Словарь терминов ITIL версия 1.0, 29 июля 2011 г.]

EN

emergency change advisory board
ECAB
(ITIL Service Transition)
A subgroup of the change advisory board that makes decisions about emergency changes. Membership may be decided at the time a meeting is called, and depends on the nature of the emergency change.
[Словарь терминов ITIL версия 1.0, 29 июля 2011 г.]

Тематики

• информационные технологии в целом

Синонимы

• ECAB

EN

• emergency change advisory board
• ECAB