-
1 sample proportion
Большой англо-русский и русско-английский словарь > sample proportion
-
2 sample proportion
Математика: доля выборки (в генеральной совокупности) -
3 sample proportion
стат. -
4 sample proportion
The English-Russian dictionary on reliability and quality control > sample proportion
-
5 proportion
2) мат. пропорция3) соотношение4) соразмерять•in proportion to —(прямо) пропорционально; соразмерно, соответственно
proportion by addition and subtraction — мат. пропорция между суммами и разностями исходных членов
proportion by subtraction — мат. пропорция, образованная вычитанием единицы из обеих частей исходной пропорции
proportion by addition — мат. пропорция, образованная прибавлением единицы к обеим частям исходной пропорции
to vary in a direct proportion — мат. изменяться прямо пропорционально
to vary in an inverse proportion — мат. изменяться обратно пропорцонально
-
6 flow-proportion sample
проба, отбираемая пропорционально расходу -
7 flow-proportion sample
Экология: проба, отбираемая пропорционально расходуУниверсальный англо-русский словарь > flow-proportion sample
-
8 доля выборки
Большой англо-русский и русско-английский словарь > доля выборки
-
9 piece
-
10 mean
1) среднее значение || средний2) средний член3) способ; средство4) середина || срединный5) иметь в виду6) иметь значение; означать; значить•about the mean — вокруг среднего значения; относительно среднего
mean with respect to — значение, усреднённое по; среднее по...
- row mean- subgroup mean -
11 sampling
сущ.1)а) стат. выборочное исследование (метод исследования, при которым статистические свойства совокупности каких-л. объектов генеральной совокупности изучаются на основе выборки)stratified random sampling among 2000 examined women — стратифицированное случайное выборочное исследование 2000 изучаемых женщин
upon the basis of sampling of available records — на основании выборочного исследования имеющихся записей
If a dealer does not have adequate records of his or her retail sales or purchases, the department may, upon the basis of a test or sampling of the dealer's available records or other information relating to the sales or purchases made by such dealer for a representative period, determine the proportion that taxable retail sales bear to total retail sales or the proportion that taxable purchases bear to total purchases. – Если у дилера нет соответствующих записей его или ее розничных продаж или покупок, департамент может на основании проверки или выборочного исследования имеющихся записей дилера или другой информации, относящейся к продажам или покупкам, сделанным таким дилеров за изучаемый период, определить соотношение величины налогооблагаемых розничных продаж и суммарных розничных продаж или соотношение величины налогооблагаемых покупок и суммарных покупок.
Syn:See:б) стат. выборка, отбор, забор ( процесс формирования выборки из совокупности)Sampling among households is a procedure whereby researchers randomly generate telephone numbers by means of directories
water [soil\] sampling — забор воды [почвы\]
See:statistical sampling 1), non-profitability sampling, convenience sampling, purpose sampling, house-to-house sampling 2), multistage sampling, optional sampling, quota sampling, oversampling, random digit dialing, accidental sampling, single sampling, double sampling, multiple sampling, unit sampling2) стат. выборка, выборочная совокупность (совокупность объектов, выбранных из генеральной совокупности для исследования)Syn:sample 1. 2)See:3) марк. сэмплинг, распространение образцов (бесплатное или почти бесплатное предложение товара небольшой группе потенциальных покупателей с целью ознакомления покупателей с товаром и стимулирования спроса)See:
* * *
выборочное исследование, опробование: 1) изучение небольшой группы людей, представляющих собой репрезентативную выборку гораздо большей группы людей для целей маркетинга товаров и услуг; 2) бесплатное (или с большой скидкой) предложение товара на пробу небольшой группе клиентов для стимулирования спроса. -
12 sampling
1. Mktga sales promotion technique in which customers and prospects are offered a free sample of a product2. Opsthe selection of a small proportion of a set of items being studied, from which valid inferences about the whole set or population can be made. Sampling makes it possible to obtain valid research results when it is impracticable to survey the whole population. The size of the sample needed for valid results depends on a number of factors, including the uniformity of the population being studied and the level of accuracy required. The technique is based on the laws of probability, and a number of different sampling methods can be used, including random sampling and nonrandom sampling. Specialized applications of sampling include activity sampling, acceptance sampling, and attribute sampling. -
13 PS
1) Общая лексика: project schedules2) Компьютерная техника: Physically Sequential, Power Save, Power Solution, Pre Set, Problem Sheet, Process Status, processor sharing4) Биология: photosystem5) Морской термин: portside, левый борт6) Медицина: Penicillin Susceptible, pulmonary stenosis, сыворотка плазмы7) Американизм: Professional Services8) Спорт: Performance Supplement, Practice Sheet9) Латинский язык: Post Scriptum10) Военный термин: Personnel Services, Photographic Service, Physical Strength, Piece of Shit, Piercing Slashing, Pole Smoker, Policy Support, Post Script, Processing Segmext, Processing Station, packing sheet, parachute subsystem, parade state, passed school, patrol ship, payload shroud, paymaster sergeant, performance standard, permanent staff, personal services, personal skills, personal survival, personnel strength, personnel subsystem, petrol station, photographic squadron, physical security, picket ship, pilot simulator, pioneer school, pistol sharpshooter, planning and scheduling, planning study, plotting system, port security, power section, power source, power station, power system, preliminary study, prior service, probability of survival, problem statement, procurement specification, product standards, professional staffing, program summary, proof shoot, propellant supply, propellant system, provost sergeant, public safety, pulse search, pulse sensor, Пи-Эс (хлорпикрин)11) Техника: Phasing System, packet switching equipment, particle settling, payload specialist, planar stripe, policy statement, polysilicon, potential supplier, power-save input, power-save output, pressurizer surge, prevention system, primary sight, primary station, production standard, program sharing, program sponsor, proton synchrotron, pulse stretcher, лошадиная сила( PferdeStark, по-немецки, система DIN) (http://forum.lingvo.ru/actualthread.aspx?bid=18&tid=35213&hl=equivalent), л.с. (часто в английских текстах пишут немецкий вариант HP), Proximity sensor12) Шутливое выражение: Paint Shop13) Математика: вероятность успешного исхода (probability of success), доля успешных исходов (proportion of successes), статистически значимый (probably significant)14) Бухгалтерия: Point Source, Purchase Sale15) Фармакология: ФС, фосфатидилсерин, Ptd-L-Ser, phosphatidyl serine, phosphatidylserine16) Автомобильный термин: power steering17) Биржевой термин: Parent Shelf18) Грубое выражение: Penis Sucker, Penis Suckers, Pubes Shaved19) Политика: Trust Territory of the Pacific Islands (Palau), (polling station) избирательный участок20) Телевидение: phase shift21) Сокращение: Paleontological Society, Pashto, Passenger Service, Pharmaceutical Society, Police Sergeant, PostScriptum, Postal Service schedule, Privy Seal, Probability of mission Success, Progressive Scan, Proposed Standard, Protective Security, Public School, Pushto, chloropicrin, parallel-to-serial, passenger steamer, passing scuttle, plus, point of switch, port and starboard, power surplus, pull switch, power supply (comb form), process specification (number), proof shot (projectile), Principal Secretary (в Индии. Напр.: The Principal Secretary to Minister)22) Университет: Pirate School, Positively Superior23) Физика: протонный синхротрон24) Физиология: Physical Status, Present Symptoms, population spike25) Школьное выражение: Primary School26) Электроника: Polar Stereographic, Porous silicon, Pulse Shape, Pulse Shaping27) Вычислительная техника: PostScript, Power Supply, packet switching, privileged state, pulse shaper, расширение файлов в формате PostScript Interpreted, PostScript (Adobe), Privilege Service (DCE), Process Status (Unix)28) Литература: Pauline Shirley29) Нефть: Pressure Switches, plough steel, potentiometric surface, pressure switch, производственный стандарт (production standard), промышленный стандарт (production standard)30) Биохимия: Paradoxical Sleep31) Связь: Peripheral Shelf (A7xxx family)32) Картография: police station, polar stereographic (projection)33) Банковское дело: привилегированная акция (preferred stock)34) Парфюмерия: полистирол35) Фирменный знак: Phy Science, Power Solutions36) Экология: plankton studies37) СМИ: Phantasy Star, Priority Seating38) Деловая лексика: Production Sample39) Глоссарий компании Сахалин Энерджи: Project Specification, Project specifications, piping supervisor40) Образование: Pluralistic School, Polite Society, Post Scrip, Pre School, Pubic School, Public Service41) Инвестиции: preferred stock42) Сетевые технологии: Parallel Sessions, Path Separator, Print Server, packet switch, personal system, коммутатор пакетов, персональная система, узел коммутации пакетов43) Полимеры: partially soluble, permanent set, polystyrene, polysulfide, pressure sensitive, proof stress44) Программирование: Program Start, Program Stream45) Контроль качества: probability of success, probability of success production standard46) Полупроводники: photoemission spectroscopy47) Сахалин Ю: protective services, pump station48) Химическое оружие: chloropicrin, agent, potassium salt of methyl-phosphonic acid, propulsion system, trichloronitromethane, К-соль МФК, chloropicrin (trichloronitromethane)49) Макаров: (planar stripe) планарный полосковый (о лазере)50) Расширение файла: Problem Specification, Program Stores, Proportional Spacing, Document in PostScript format (Adobe), Adobe Postscript document (text/graphics)51) Нефть и газ: oil pump station, oil transfer pumping station, НПС, нефтеперекачивающая станция, NPS52) Фантастика Philosophers Stone53) Имена и фамилии: Popcorn Shrimp54) Фармация: Performance Status55) Hi-Fi. Program Service56) Должность: Performance Spectrum, Political Skills, Private Secretary57) Чат: Painfully Sarcastic, Post Silly58) Правительство: Peach State59) НАСА: Performance Space, Planetary And Solar60) Единицы измерений: Per Spring, Pico Seconds61) ГОСТ: pressure support -
14 Ps
1) Общая лексика: project schedules2) Компьютерная техника: Physically Sequential, Power Save, Power Solution, Pre Set, Problem Sheet, Process Status, processor sharing4) Биология: photosystem5) Морской термин: portside, левый борт6) Медицина: Penicillin Susceptible, pulmonary stenosis, сыворотка плазмы7) Американизм: Professional Services8) Спорт: Performance Supplement, Practice Sheet9) Латинский язык: Post Scriptum10) Военный термин: Personnel Services, Photographic Service, Physical Strength, Piece of Shit, Piercing Slashing, Pole Smoker, Policy Support, Post Script, Processing Segmext, Processing Station, packing sheet, parachute subsystem, parade state, passed school, patrol ship, payload shroud, paymaster sergeant, performance standard, permanent staff, personal services, personal skills, personal survival, personnel strength, personnel subsystem, petrol station, photographic squadron, physical security, picket ship, pilot simulator, pioneer school, pistol sharpshooter, planning and scheduling, planning study, plotting system, port security, power section, power source, power station, power system, preliminary study, prior service, probability of survival, problem statement, procurement specification, product standards, professional staffing, program summary, proof shoot, propellant supply, propellant system, provost sergeant, public safety, pulse search, pulse sensor, Пи-Эс (хлорпикрин)11) Техника: Phasing System, packet switching equipment, particle settling, payload specialist, planar stripe, policy statement, polysilicon, potential supplier, power-save input, power-save output, pressurizer surge, prevention system, primary sight, primary station, production standard, program sharing, program sponsor, proton synchrotron, pulse stretcher, лошадиная сила( PferdeStark, по-немецки, система DIN) (http://forum.lingvo.ru/actualthread.aspx?bid=18&tid=35213&hl=equivalent), л.с. (часто в английских текстах пишут немецкий вариант HP), Proximity sensor12) Шутливое выражение: Paint Shop13) Математика: вероятность успешного исхода (probability of success), доля успешных исходов (proportion of successes), статистически значимый (probably significant)14) Бухгалтерия: Point Source, Purchase Sale15) Фармакология: ФС, фосфатидилсерин, Ptd-L-Ser, phosphatidyl serine, phosphatidylserine16) Автомобильный термин: power steering17) Биржевой термин: Parent Shelf18) Грубое выражение: Penis Sucker, Penis Suckers, Pubes Shaved19) Политика: Trust Territory of the Pacific Islands (Palau), (polling station) избирательный участок20) Телевидение: phase shift21) Сокращение: Paleontological Society, Pashto, Passenger Service, Pharmaceutical Society, Police Sergeant, PostScriptum, Postal Service schedule, Privy Seal, Probability of mission Success, Progressive Scan, Proposed Standard, Protective Security, Public School, Pushto, chloropicrin, parallel-to-serial, passenger steamer, passing scuttle, plus, point of switch, port and starboard, power surplus, pull switch, power supply (comb form), process specification (number), proof shot (projectile), Principal Secretary (в Индии. Напр.: The Principal Secretary to Minister)22) Университет: Pirate School, Positively Superior23) Физика: протонный синхротрон24) Физиология: Physical Status, Present Symptoms, population spike25) Школьное выражение: Primary School26) Электроника: Polar Stereographic, Porous silicon, Pulse Shape, Pulse Shaping27) Вычислительная техника: PostScript, Power Supply, packet switching, privileged state, pulse shaper, расширение файлов в формате PostScript Interpreted, PostScript (Adobe), Privilege Service (DCE), Process Status (Unix)28) Литература: Pauline Shirley29) Нефть: Pressure Switches, plough steel, potentiometric surface, pressure switch, производственный стандарт (production standard), промышленный стандарт (production standard)30) Биохимия: Paradoxical Sleep31) Связь: Peripheral Shelf (A7xxx family)32) Картография: police station, polar stereographic (projection)33) Банковское дело: привилегированная акция (preferred stock)34) Парфюмерия: полистирол35) Фирменный знак: Phy Science, Power Solutions36) Экология: plankton studies37) СМИ: Phantasy Star, Priority Seating38) Деловая лексика: Production Sample39) Глоссарий компании Сахалин Энерджи: Project Specification, Project specifications, piping supervisor40) Образование: Pluralistic School, Polite Society, Post Scrip, Pre School, Pubic School, Public Service41) Инвестиции: preferred stock42) Сетевые технологии: Parallel Sessions, Path Separator, Print Server, packet switch, personal system, коммутатор пакетов, персональная система, узел коммутации пакетов43) Полимеры: partially soluble, permanent set, polystyrene, polysulfide, pressure sensitive, proof stress44) Программирование: Program Start, Program Stream45) Контроль качества: probability of success, probability of success production standard46) Полупроводники: photoemission spectroscopy47) Сахалин Ю: protective services, pump station48) Химическое оружие: chloropicrin, agent, potassium salt of methyl-phosphonic acid, propulsion system, trichloronitromethane, К-соль МФК, chloropicrin (trichloronitromethane)49) Макаров: (planar stripe) планарный полосковый (о лазере)50) Расширение файла: Problem Specification, Program Stores, Proportional Spacing, Document in PostScript format (Adobe), Adobe Postscript document (text/graphics)51) Нефть и газ: oil pump station, oil transfer pumping station, НПС, нефтеперекачивающая станция, NPS52) Фантастика Philosophers Stone53) Имена и фамилии: Popcorn Shrimp54) Фармация: Performance Status55) Hi-Fi. Program Service56) Должность: Performance Spectrum, Political Skills, Private Secretary57) Чат: Painfully Sarcastic, Post Silly58) Правительство: Peach State59) НАСА: Performance Space, Planetary And Solar60) Единицы измерений: Per Spring, Pico Seconds61) ГОСТ: pressure support -
15 ps
1) Общая лексика: project schedules2) Компьютерная техника: Physically Sequential, Power Save, Power Solution, Pre Set, Problem Sheet, Process Status, processor sharing4) Биология: photosystem5) Морской термин: portside, левый борт6) Медицина: Penicillin Susceptible, pulmonary stenosis, сыворотка плазмы7) Американизм: Professional Services8) Спорт: Performance Supplement, Practice Sheet9) Латинский язык: Post Scriptum10) Военный термин: Personnel Services, Photographic Service, Physical Strength, Piece of Shit, Piercing Slashing, Pole Smoker, Policy Support, Post Script, Processing Segmext, Processing Station, packing sheet, parachute subsystem, parade state, passed school, patrol ship, payload shroud, paymaster sergeant, performance standard, permanent staff, personal services, personal skills, personal survival, personnel strength, personnel subsystem, petrol station, photographic squadron, physical security, picket ship, pilot simulator, pioneer school, pistol sharpshooter, planning and scheduling, planning study, plotting system, port security, power section, power source, power station, power system, preliminary study, prior service, probability of survival, problem statement, procurement specification, product standards, professional staffing, program summary, proof shoot, propellant supply, propellant system, provost sergeant, public safety, pulse search, pulse sensor, Пи-Эс (хлорпикрин)11) Техника: Phasing System, packet switching equipment, particle settling, payload specialist, planar stripe, policy statement, polysilicon, potential supplier, power-save input, power-save output, pressurizer surge, prevention system, primary sight, primary station, production standard, program sharing, program sponsor, proton synchrotron, pulse stretcher, лошадиная сила( PferdeStark, по-немецки, система DIN) (http://forum.lingvo.ru/actualthread.aspx?bid=18&tid=35213&hl=equivalent), л.с. (часто в английских текстах пишут немецкий вариант HP), Proximity sensor12) Шутливое выражение: Paint Shop13) Математика: вероятность успешного исхода (probability of success), доля успешных исходов (proportion of successes), статистически значимый (probably significant)14) Бухгалтерия: Point Source, Purchase Sale15) Фармакология: ФС, фосфатидилсерин, Ptd-L-Ser, phosphatidyl serine, phosphatidylserine16) Автомобильный термин: power steering17) Биржевой термин: Parent Shelf18) Грубое выражение: Penis Sucker, Penis Suckers, Pubes Shaved19) Политика: Trust Territory of the Pacific Islands (Palau), (polling station) избирательный участок20) Телевидение: phase shift21) Сокращение: Paleontological Society, Pashto, Passenger Service, Pharmaceutical Society, Police Sergeant, PostScriptum, Postal Service schedule, Privy Seal, Probability of mission Success, Progressive Scan, Proposed Standard, Protective Security, Public School, Pushto, chloropicrin, parallel-to-serial, passenger steamer, passing scuttle, plus, point of switch, port and starboard, power surplus, pull switch, power supply (comb form), process specification (number), proof shot (projectile), Principal Secretary (в Индии. Напр.: The Principal Secretary to Minister)22) Университет: Pirate School, Positively Superior23) Физика: протонный синхротрон24) Физиология: Physical Status, Present Symptoms, population spike25) Школьное выражение: Primary School26) Электроника: Polar Stereographic, Porous silicon, Pulse Shape, Pulse Shaping27) Вычислительная техника: PostScript, Power Supply, packet switching, privileged state, pulse shaper, расширение файлов в формате PostScript Interpreted, PostScript (Adobe), Privilege Service (DCE), Process Status (Unix)28) Литература: Pauline Shirley29) Нефть: Pressure Switches, plough steel, potentiometric surface, pressure switch, производственный стандарт (production standard), промышленный стандарт (production standard)30) Биохимия: Paradoxical Sleep31) Связь: Peripheral Shelf (A7xxx family)32) Картография: police station, polar stereographic (projection)33) Банковское дело: привилегированная акция (preferred stock)34) Парфюмерия: полистирол35) Фирменный знак: Phy Science, Power Solutions36) Экология: plankton studies37) СМИ: Phantasy Star, Priority Seating38) Деловая лексика: Production Sample39) Глоссарий компании Сахалин Энерджи: Project Specification, Project specifications, piping supervisor40) Образование: Pluralistic School, Polite Society, Post Scrip, Pre School, Pubic School, Public Service41) Инвестиции: preferred stock42) Сетевые технологии: Parallel Sessions, Path Separator, Print Server, packet switch, personal system, коммутатор пакетов, персональная система, узел коммутации пакетов43) Полимеры: partially soluble, permanent set, polystyrene, polysulfide, pressure sensitive, proof stress44) Программирование: Program Start, Program Stream45) Контроль качества: probability of success, probability of success production standard46) Полупроводники: photoemission spectroscopy47) Сахалин Ю: protective services, pump station48) Химическое оружие: chloropicrin, agent, potassium salt of methyl-phosphonic acid, propulsion system, trichloronitromethane, К-соль МФК, chloropicrin (trichloronitromethane)49) Макаров: (planar stripe) планарный полосковый (о лазере)50) Расширение файла: Problem Specification, Program Stores, Proportional Spacing, Document in PostScript format (Adobe), Adobe Postscript document (text/graphics)51) Нефть и газ: oil pump station, oil transfer pumping station, НПС, нефтеперекачивающая станция, NPS52) Фантастика Philosophers Stone53) Имена и фамилии: Popcorn Shrimp54) Фармация: Performance Status55) Hi-Fi. Program Service56) Должность: Performance Spectrum, Political Skills, Private Secretary57) Чат: Painfully Sarcastic, Post Silly58) Правительство: Peach State59) НАСА: Performance Space, Planetary And Solar60) Единицы измерений: Per Spring, Pico Seconds61) ГОСТ: pressure support -
16 False Packs
A cotton market term. These are bales composed of two or more grades of cotton, generally a thin layer of good cotton (up to the sample) on the outside, and a large proportion of inferior cotton inside. From accident or design the good cotton in a " false pack " is put in the compress (as a rule) in a layer about 6-in. thick, then the inferior cotton is added. Sometimes, but not always, another layer of good cotton is placed on the top, so that whichever side is sampled the bale passes as being right. The fraud is only detected at the mill. -
17 standard
standard ['stændəd]1 noun∎ to have high/low standards (of person) être exigeant/ne pas être exigeant; (of school) exiger un bon niveau/ne pas exiger un bon niveau;∎ he sets high standards for himself il est très exigeant avec lui-même;∎ a high standard of playing/academic achievement un niveau de jeu/de réussite scolaire élevé;∎ your work isn't up to standard or is below standard votre travail laisse à désirer;∎ to be up to/below standard être du/en dessous du niveau requis;∎ most of the goods are or come up to standard la plupart des marchandises sont de qualité satisfaisante;∎ she's an Olympic standard swimmer c'est une nageuse de niveau olympique;∎ it's a difficult task by any standard or by anybody's standards c'est indiscutablement une tâche difficile;∎ we apply the same standards to all candidates nous jugeons tous les candidats selon les mêmes critères;∎ their only standard of success is money leur unique critère de réussite, c'est l'argent;∎ we don't have the same aesthetic standards nous n'avons pas les mêmes valeurs esthétiques;∎ standard of living niveau m de vie(b) (official specification, norm) norme f;∎ to set quality standards for a product fixer des normes de qualité pour un produit;∎ to comply with or to meet government standards être conforme aux normes établies par le gouvernement;∎ their salaries are low by European standards leurs salaires sont bas par rapport aux salaires européens;∎ high safety standards des règles de sécurité très strictes;∎ standards and practices normes et usages(c) (moral principle) principe m;∎ I won't do it! I have my standards! je ne le ferai pas! j'ai des principes!;∎ to have high moral standards avoir de grands principes moraux∎ a jazz standard un classique du jazz, un standard∎ I can't drive a standard je ne sais conduire que les voitures à boîte de vitesse automatique∎ figurative under the standard of Liberty sous l'étendard de la liberté∎ they come in three standard sizes ils existent en trois tailles standard;∎ catalytic converters are now standard features les pots catalytiques sont désormais la norme;∎ headrests are standard or are fitted as standard les appuis-têtes sont montés en série;∎ the standard return fare is $500 l'aller-retour au tarif normal coûte 500 dollars;∎ what's the standard tip? que laisse-t-on normalement comme pourboire?;∎ there's a standard procedure for reporting accidents il y a une procédure bien établie pour signaler les accidents;∎ any standard detergent will do n'importe quel détergent usuel fera l'affaire;∎ it was just a standard hotel room c'était une chambre d'hôtel ordinaire;∎ the cooking is fairly standard la cuisine n'a rien de sensationnel;∎ she has a standard speech for such occasions elle a un discours tout prêt pour ce genre d'occasions;∎ one of his standard jokes une de ses plaisanteries habituelles(b) (measure → metre, kilogramme etc) étalon (inv)(c) (text, work) classique, de base;∎ the standard works in English poetry les ouvrages classiques de la poésie anglaise;∎ it's the standard work on the Reformation c'est l'ouvrage de base sur la Réforme►► standard bearer (of cause) porte-drapeau m; (of political party) chef m de file; (of flag) porte-étendard m;standards catalogue catalogue m de normes;standards committee organisme m de normalisation;standards conversion (in broadcasting) transcodage m;standards converter (in broadcasting) transcodeur m;standard deviation (in statistics) écart-type m;standard document document m type;standard English l'anglais m standard;standard error (in statistics) écart-type m;Railways standard gauge voie f normale, écartement m normal;Scottish School Standard grade = premier examen de fin de scolarité en Écosse, équivalent du GCSE anglais;British standard lamp lampadaire m (de salon);standard operating procedure = marche à suivre normale;standard practice pratique f courante;standard rate (of tax) taux m standard;Botany standard rose rose f tige;Marketing standard sample échantillon m modèle;standard time heure f légale -
18 Ricardo, Sir Harry Ralph
[br]b. 26 January 1885 London, Englandd. 18 May 1974 Graffham, Sussex, England[br]English mechanical engineer; researcher, designer and developer of internal combustion engines.[br]Harry Ricardo was the eldest child and only son of Halsey Ricardo (architect) and Catherine Rendel (daughter of Alexander Rendel, senior partner in the firm of consulting civil engineers that later became Rendel, Palmer and Tritton). He was educated at Rugby School and at Cambridge. While still at school, he designed and made a steam engine to drive his bicycle, and by the time he went up to Cambridge in 1903 he was a skilled craftsman. At Cambridge, he made a motor cycle powered by a petrol engine of his own design, and with this he won a fuel-consumption competition by covering almost 40 miles (64 km) on a quart (1.14 1) of petrol. This brought him to the attention of Professor Bertram Hopkinson, who invited him to help with research on turbulence and pre-ignition in internal combustion engines. After leaving Cambridge in 1907, he joined his grandfather's firm and became head of the design department for mechanical equipment used in civil engineering. In 1916 he was asked to help with the problem of loading tanks on to railway trucks. He was then given the task of designing and organizing the manufacture of engines for tanks, and the success of this enterprise encouraged him to set up his own establishment at Shoreham, devoted to research on, and design and development of, internal combustion engines.Leading on from the work with Hopkinson were his discoveries on the suppression of detonation in spark-ignition engines. He noted that the current paraffinic fuels were more prone to detonation than the aromatics, which were being discarded as they did not comply with the existing specifications because of their high specific gravity. He introduced the concepts of "highest useful compression ratio" (HUCR) and "toluene number" for fuel samples burned in a special variable compression-ratio engine. The toluene number was the proportion of toluene in heptane that gave the same HUCR as the fuel sample. Later, toluene was superseded by iso-octane to give the now familiar octane rating. He went on to improve the combustion in side-valve engines by increasing turbulence, shortening the flame path and minimizing the clearance between piston and head by concentrating the combustion space over the valves. By these means, the compression ratio could be increased to that used by overhead-valve engines before detonation intervened. The very hot poppet valve restricted the advancement of all internal combustion engines, so he turned his attention to eliminating it by use of the single sleeve-valve, this being developed with support from the Air Ministry. By the end of the Second World War some 130,000 such aero-engines had been built by Bristol, Napier and Rolls-Royce before the piston aero-engine was superseded by the gas turbine of Whittle. He even contributed to the success of the latter by developing a fuel control system for it.Concurrent with this was work on the diesel engine. He designed and developed the engine that halved the fuel consumption of London buses. He invented and perfected the "Comet" series of combustion chambers for diesel engines, and the Company was consulted by the vast majority of international internal combustion engine manufacturers. He published and lectured widely and fully deserved his many honours; he was elected FRS in 1929, was President of the Institution of Mechanical Engineers in 1944–5 and was knighted in 1948. This shy and modest, though very determined man was highly regarded by all who came into contact with him. It was said that research into internal combustion engines, his family and boats constituted all that he would wish from life.[br]Principal Honours and DistinctionsKnighted 1948. FRS 1929. President, Institution of Mechanical Engineers 1944–5.Bibliography1968, Memo \& Machines. The Pattern of My Life, London: Constable.Further ReadingSir William Hawthorne, 1976, "Harry Ralph Ricardo", Biographical Memoirs of Fellows of the Royal Society 22.JBBiographical history of technology > Ricardo, Sir Harry Ralph
См. также в других словарях:
Sample size determination — is the act of choosing the number of observations to include in a statistical sample. The sample size is an important feature of any empirical study in which the goal is to make inferences about a population from a sample. In practice, the sample … Wikipedia
Sample size — The sample size of a statistical sample is the number of observations that constitute it. It is typically denoted n , a positive integer (natural number).Typically, all else being equal, a larger sample size leads to increased precision in… … Wikipedia
sample — 1) in systematic ichthyology a collection of fishes made from a locality; a subset of a population; a representative part of a larger unit used to study the properties of the whole. The larger the sample the greater the confidence that the… … Dictionary of ichthyology
sample — A proportion or a segment of a fish stock which is removed for study, and is assumed to be representative of the whole. The greater the effort, in terms of both numbers and magnitude of the samples, the greater the confidence that the information … Fisheries — dictionary
sample — A proportion or a segment of a fish stock which is removed for study, and is assumed to be representative of the whole. The greater the effort, in terms of both numbers and magnitude of the samples, the greater the confidence that the information … Fisheries — dictionary
Binomial proportion confidence interval — In statistics, a binomial proportion confidence interval is a confidence interval for a proportion in a statistical population. It uses the proportion estimated in a statistical sample and allows for sampling error. There are several formulas for … Wikipedia
National Sample Survey Organisation — The National Sample Survey Organisation or NSSO, now National Sample Survey Office is an organization in the Ministry of Statistics and Programme Implementation of the Government of India. It is the largest organisation in India conducting… … Wikipedia
rotating sample design — A procedure for combining the advantages of the regular cross sectional survey with the panel study , in national statistical surveys measuring trends over time, such as the USA National Crime Survey and certain Labour Force Surveys. A proportion … Dictionary of sociology
PASS Sample Size Software — PASS Developer(s) NCSS, LLC [1] Stable release PASS 2008 / Jan, 2008 Operating system Windows Type power and sample s … Wikipedia
Certificat de proportion de sang indien — Certificate of Degree of Indian Blood Le Certificate of Degree of Indian Blood ou Certificate of Degree of Alaska Native Blood (CDIB) (littéralement « Certificat de proportion de sang indien ») est un document qui certifie qu une… … Wikipédia en Français
statistics — /steuh tis tiks/, n. 1. (used with a sing. v.) the science that deals with the collection, classification, analysis, and interpretation of numerical facts or data, and that, by use of mathematical theories of probability, imposes order and… … Universalium
