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1 Relative Response Factor - относительный фактор отклика пика
Chromatography: RRFУниверсальный русско-английский словарь > Relative Response Factor - относительный фактор отклика пика
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2 молярный относительный коэффициент чувствительности детектора
1) Chemistry: Relative Molar Response2) Chromatography: molar relative response factorУниверсальный русско-английский словарь > молярный относительный коэффициент чувствительности детектора
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3 Коэффициент чувствительности детектора
Chromatography: Relative Response FactorУниверсальный русско-английский словарь > Коэффициент чувствительности детектора
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4 коэффициент чувствительности детектора
Chromatography: Relative Response FactorУниверсальный русско-английский словарь > коэффициент чувствительности детектора
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5 массовый относительный коэффициент чувствительности детектора
Chromatography: weight relative response factorУниверсальный русско-английский словарь > массовый относительный коэффициент чувствительности детектора
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6 относительный коэффициент чувствительности детектора
Chromatography: Relative Response FactorУниверсальный русско-английский словарь > относительный коэффициент чувствительности детектора
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7 относительная чувствительность
1) Naval: relative receiving response2) Engineering: effective efficiency (болометра, приёмника излучения), relative response3) Mathematics: relative sensitivity4) Astronautics: reference sensitivity5) Automation: relative sensitivity factor (прибора)Универсальный русско-английский словарь > относительная чувствительность
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8 índice
m.1 index, table of contents.2 index finger, index, forefinger, long finger.3 rate, coefficient, ratio.4 pointer, indicator.5 suffix of a string.* * *2 (de un libro) index, table of contents; (catálogo) catalogue3 (dedo) index finger, forefinger\índice de mortalidad death rateíndice de natalidad birth rateíndice de precios al consumo retail price index* * *noun m.* * *SM1) [de libro, publicación] indexíndice de materias, índice temático — table of contents
2) (=catálogo) (library) catalogue, (library) catalog (EEUU)3) (Estadística) rateíndice de audiencia — (TV) audience ratings pl
índice de mortalidad — death rate, mortality rate
4) (Econ) index5) (Mec)6) (=prueba) sign, indicationes un índice claro de que el plan ha fracasado — it's a clear sign o indication that the plan has failed
7) (Téc) (=aguja) pointer, needle; (=manecilla) hand8) (Anat) (tb: dedo índice) index finger, forefinger9) (Rel)* * *1) ( de una publicación) index; ( catálogo) catalog*2) (Anat) index finger, forefinger3)a) (Mat, Inf) indexb) (tasa, coeficiente) rate4) (indicio, muestra) sign, indication* * *1) ( de una publicación) index; ( catálogo) catalog*2) (Anat) index finger, forefinger3)a) (Mat, Inf) indexb) (tasa, coeficiente) rate4) (indicio, muestra) sign, indication* * *índice11 = index [indices/indexes, -pl.].Nota: Listado alfabético o sistemático de materias que envían a la posición de cada materia en un documento o conjunto de documentos.Ex: An index, in the context of information retrieval, is some kind of physical mechanism, or tool, which serves to indicate to the searcher those parts of an information store which are potentially relevant to a request.
* al estilo de los índices de materia = subject-type.* basado en índices = index-based.* boletín de índices = indexing bulletin.* buscar a través de los índices = browse.* búsqueda en el índice = index searching.* consultar a través de los índices = browse.* consultar un índice = search + index.* creación de los índices de un libro = back-of-the-book indexing, back-of-book indexing.* crear un índice = generate + index.* disco índice = index disc.* distribución de una materia en su índice = subject scatter.* elaborar un índice = produce + index.* entrada del índice = index entry.* hacer un índice digital = thumb index.* índice acumulativo = cumulative index, cumulated index.* índice alfabético = alphabetical index.* índice alfabético de materias = alphabetical subject index.* índice articulado de materias = articulated subject index.* índice bibliométrico = bibliometric index.* Indice Británico de Tecnología (BTI) = BTI (British Technology Index).* índice colectivo = pool index.* índice cruzado = dual dictionary.* índice de autores = author index.* Indice de Autores Corporativos = Corporate Index.* Indice de Citas = citation index, Citation Index.* Indice de Citas de Ciencia (SCI) = Science Citation Index (SCI).* Indice de Citas de las Ciencias Sociales (SSCI) = Social Sciences Citation Index (SSCI).* índice de contenido = contents list, table of contents [ToC], contents table.* Indice de Documentos de las Naciones Unidas (UNDEX) = UNDEX (United Nations Documents Index).* Indice de Documentos de las Naciones Unidas (UNDI) = UNDI (United Nations Documents Index).* Indice de Fuentes = source index, Source Index.* índice de libro = book index.* índice de listado de ordenador compuesto tipográficamente = typeset computer book form index.* índice de localización = localisation index.* índice de materias = subject index, topical index, subject guide.* índice de medicina = medical index.* índice de nombres = name index.* índice de publicaciones periódicas = periodical index.* índice derivado automáticamente de los títulos = derived index.* índice de términos permutados = Permuterm index.* índice de títulos = title index.* índice digital = thumb index, thumb holes.* índice encuadernado de listado de ordenador = computer book form index, computer book form index.* índice encuadernado en forma de listado de ordenador = computer book form index.* índice en lenguaje natural = natural language index.* índice en microfilm = microfilm index.* índice especializado = special index, specialist index.* índice específico = specific index.* índice final = back-of-the-book index, back-of-book index.* índice general = general index.* índice impreso = printed index.* índice invertido = dictionary, inverted index, inverted list.* índice invertido de las citas bibliográficas = citation dictionary.* índice invertido de las palabras del título = title word dictionary.* índice jerárquico = hierarchical index.* índice KWIC = KWIC index.* índice KWIC (Palabra Clave en su Contexto) = KWIC (Keyword-in-Context).* índice KWIT (Palabra Clave del Título) = KWIT (Keyword-in-Title).* índice KWOC (Palabra Clave fuera de su Contexto) = KWOC (Keyword-Out-of-Context).* índice permutado = permuted index, shunted index.* índice permutado del tipo KWIC = KWICed index.* Indice Permutado de Materias = Permuterm Subject Index.* índice permutado de palabras clave = permuted keyword index.* índice permutado de títulos = permuted title index.* índice por unitérminos = uniterm index.* índice postcoordinado = post-coordinate index.* índice precoordinado = pre-coordinate index.* índice quinquenal = quinquennial index.* índice relativo = relative index.* índices de títulos al estilo de los índices de materia = subject-type title indexes.* índices postcoordinados de fichas = card based post-coordinate index.* índice temático = subject index, thematic index, subject directory.* índice visible = visible index.* revista de índices = indexing journal.* sin índice = indexless.* sistema en el que el documento aparece representado en un único lugar del ín = one-place system.* término del índice = index term.índice22 = indicator, rate, ratio, incidence, index [indices/indexes, -pl.], rating.Ex: To indicate from which field a given work was Cuttered, these second indicators could be further redefined = Para indicar de qué campo se le había asignado la marca de Cutter a una obra, se podían delimitar aún más estos segundos indicadores.
Ex: Whether, in the future, the co-operatives will be able to fund appropriate developments at a sufficiently rapid rate remains an unanswered question.Ex: The microfiche is a common form for catalogues and indexes, usually 208 or 270 frames per fiche, in a piece of film and with a reduction ratio of 42 or 48:1.Ex: The number of entries in pre-co-ordinate system will depend upon the incidence of references and multiple entries.Ex: As job anxiety scores increased, job satisfaction indices decreased.Ex: But the rater must not be afraid to give negative ratings.* índice de abandono escolar = dropout rate.* índice de acierto = hit rate.* índice de afinidad = affinity index.* índice de alcoholemia = blood alcohol level.* índice de alcohol en sangre = blood alcohol level.* índice de apertura = openness index.* índice de audiencia = rating.* índice de calidad del aire = air quality index.* índice de colesterol = cholesterol level.* índice de confianza del consumidor = consumer confidence index.* índice de criminalidad = crime rate.* índice de deserción escolar = dropout rate.* índice de divorcios = divorce expectancy.* índice de evaporación = evaporation rate.* índice de exhaustividad = recall ratio.* índice de exhaustividad de la recuperación = recall measure.* índice de éxito = success rate.* índice de fracaso escolar = failure rate, dropout rate.* índice de impacto = impact indicator, impact factor.* índice de impacto de una publicación periódica = periodical impact factor.* índice de impacto inmediato = immediacy index.* índice de irrelevancia = fallout, fallout ratio.* índice de Jaccard = Jaccard's index.* índice del coste de (la) vida = cost of living index.* índice del costo de (la) vida = cost of living index.* índice de legibilidad = readability rating, readability formula, readability index.* índice de masa corporal (IMC) = body mass index (BMI).* índice de morbosidad = morbidity rate.* índice de morbosidad infantil = infant morbidity rate.* índice de mortalidad = death rate, mortality rate.* índice de mortalidad infantil = infant mortality rate.* índice de mortalidad materna = maternity mortality rate.* índice de mortandad = death rate, mortality rate.* índice de no citación = uncitedness.* índice de obsolescencia = aging rate [ageing rate], aging factor [ageing factor].* índice de octano = octane number.* índice de palabras del documento = textwords ratio.* índice de pertinencia = precision ratio, relevance rating, relevance ranking.* índice de ponderación = threshold weight.* índice de precios = price index.* índice de precios al consumo = consumer price index (CPI), cost of living index.* Indice de Precios al Consumo (IPC) = Retail Price Index (RPI).* índice de precipitación = rainfall figure.* índice de precisión = precision figure.* índice de predicción = predictor.* índice de probabilidad = expectancy ratio.* índice de producción = output indicator.* índice de productividad = output measure.* índice de registro por documento = item record index.* índice de registro por término = term record index.* índice de rendimiento = performance rating, performance measure, output measure.* índice de rendimiento personal = individual performance index.* índice de respuesta = response rate, rate of response.* índice de satisfacción = fill rate, satisfaction rating.* índice de suicidios = suicide rate.* índice de uso = performance measure, output measure.* índice económico = economic index.* índice proporciométrico = proportiometric index.índice33 = forefinger.Nota: Dedo de la mano.Ex: Then he picked up about 2 cm. of type from the right-hand end of the uppermost line (i.e. the last word or two of the last line) with the thumb and forefinger of his right hand, read it, and dropped the pieces of type one by one into their proper boxes.
* dedo índice = index finger, forefinger.* * *A1 (de una publicación) index; (catálogo) catalog*2Compuestos:alphabetical index● índice temático or de materiastable of contentsB ( Anat) index finger, forefingerC1 ( Mat) index2 ( Inf) index3 (tasa, coeficiente) rateun aumento en el índice de criminalidad an increase in the crime rateCompuestos:cephalic indexratings (pl)cost-of-living indexbody mass indexdeath rate, mortality ratebirth rate● índice de precios al consumo or al consumidorconsumer prices index, ≈ retail price index ( in UK)wholesale price index● índice de sobrevivencia or supervivenciasurvival rateD (indicio, muestra) sign, indicationes un índice de la crisis it is a sign o an indication of the crisis* * *
Del verbo indizar: ( conjugate indizar)
indicé es:
1ª persona singular (yo) pretérito indicativo
indice es:
1ª persona singular (yo) presente subjuntivo3ª persona singular (él/ella/usted) presente subjuntivo3ª persona singular (él/ella/usted) imperativo
Multiple Entries:
indizar
índice
índice sustantivo masculino
1 ( de una publicación) index;
( catálogo) catalog( conjugate catalog)
2 (Anat) index finger, forefinger
3 (tasa, coeficiente) rate;
índice sustantivo masculino
1 (de libro) index, contents pl
2 (proporción, tasa) rate
índice de audiencia, ratings pl; índice de natalidad/mortalidad, birth/death rate
Fin índice de precios al consumo (IPC), retail price index (RPI)
Fin índice bursátil, stockmarket index
Téc índice de calidad, quality factor
3 Anat (dedo) índice, index finger, forefinger
4 (síntoma, señal) sign, indication
Index tiene dos formas del plural: si te refieres al contenido de un libro, el plural es indexes, pero si te refieres a un término matemático, es indices.
' índice' also found in these entries:
Spanish:
abstención
- concentrarse
- dedo
- IPC
- sumaria
- sumario
- tabla
- ponderar
- tasa
English:
birth rate
- consumer price index
- content
- CPI
- death rate
- economy
- finger
- forefinger
- index
- index finger
- labour-intensive
- literacy
- rate
- rating
- Retail Price Index
- RPI
- unemployment
- gazetteer
- incidence
- retail
- subject
* * *índice nm1. [indicador] index;[proporción] level, rate índice de audiencia audience ratings;índice bursátil stock market index;Quím índice de cetano cetane number; Informát índice de compresión compression ratio;índice de desempleo unemployment rate;el índice de desempleo ha caído unemployment has fallen;Bolsa índice Dow Jones Dow-Jones index;índice económico economic indicator;índice de golpes [en golf] stroke index;índice de mortalidad mortality rate;índice de natalidad birth rate;Bolsa índice Nikkei Nikkei index;índice de popularidad popularity rating;Fís índice de refracción refractive index2. [señal, indicio] sign, indicator;el número de llamadas es índice del interés despertado the number of calls is a sign of how much interest has been generated3. [lista, catálogo] catalogue;[de libro] index;índice (de contenidos) (table of) contentsíndice alfabético alphabetical index;índice de materias table of contents;índice onomástico index of proper names;índice temático subject index5.(dedo) índice index finger6. [letra] index7. Mat index* * *m1 index;índice de precios al consumo consumer price index, Br tb retail price index;índice bursátil stock market index, Br share index;índice de desempleo unemployment rate2:dedo índice index finger* * *índice nm1) : index2) : index finger, forefinger3) indicio: indication* * *índice n2. (dedo) index finger -
9 чувствительность
1) General subject: delicacy (приборов), emotionalism (излишняя), hokum, pathos, pickup, response, sensibility, sensitivity, sentience, sentimentalism, sentimentality, susceptibility, susceptibleness, susceptivity, tenderness, tendresse, (например, к параметрам) responsitivity2) Aviation: response level (в дБ)3) Naval: receiving response4) Medicine: esthesis, irritability, sensation, vulnerability (к боли), responsitivity5) Engineering: response characteristic (напр. преобразователя), response level (в децибелах), responsivity, raw output(s)6) Chemistry: sensitiveness7) Construction: plant response (системы, установки)8) Mathematics: quick response, responsive9) Railway term: colour response (к цвету), control sensitivity, response (прибора, механизма и т. д.)10) Law: perceptibility12) Mining: response (сейсмографа)13) Metallurgy: responsiveness (прибора)14) Polygraphy: feeling, (термальной пластины) energy15) Psychology: soreness16) Telecommunications: relative transmitting response (сонара)18) Physiology: excitability (органа, ткани к раздражителю), irritability (органа)19) Oil: responsiveness20) Immunology: receptiveness22) Astronautics: illumination sensitivity, luminous intensity sensitivity23) Atomic energy: explosiveness24) Business: sentimental value25) Automation: smoothness (механизма)26) General subject: response (к действиям органа управления)27) Aviation medicine: receptivity, sensitivity (к сенсорному раздражителю), susceptiveness28) Makarov: factor of merit (прибора), intolerance, range (дозиметра и т.п.), response (прибора), response (прибора или реакции), response characteristic (напр., преобразователя), responsiveness (системы на внешнее воздействие), sensibility (прибора), sensibility (сентиментальность), sensibility to (smth.) (к чему-л.), sensory29) Security: (пороговая) detection sensitivity, vulnerability (к воздействию внешних факторов)30) Cement: attackability (к внешним воздействиям) -
10 коэффициент передачи
1) Engineering: gain, gain factor, gear ratio, propagation ratio, transfer constant, transfer constant transmission factor, transfer factor, transfer ratio, transmission gain, voltage ratio2) Construction: carryover factor3) Mathematics: transmission factor4) Railway term: coefficient of transmission5) Metallurgy: speed ratio6) Telecommunications: relative transmission, transfer efficiency, transmission constant, transmission efficiency, transmission ratio, transmitting response, transmittivity7) Astronautics: linkage ratio8) Mechanics: transmissibility9) Network technologies: transmission coefficient10) Polymers: transfer rating11) Automation: transition factor12) Electrical engineering: transfer factor (преобразователя постоянного тока)Универсальный русско-английский словарь > коэффициент передачи
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11 чувствительность
( в децибелах) response level, response, responsivity, sensibility, sensitivity, susceptibility* * *чувстви́тельность ж.
sensitivityабсолю́тная чувстви́тельность — absolute sensitivityчувстви́тельность весо́в — sensitivity [sensitiveness] of balanceдинами́ческая чувстви́тельность — dynamic sensitivityизлуча́тельная чувстви́тельность — radiant sensitivityизотопи́ческая чувстви́тельность ( масс-спектрометра) — abundance sensitivityчувстви́тельность к до́пуску — tolerance sensitivityчувстви́тельность к ИК излуче́нию — infra-red [IR] sensitivityчувстви́тельность к облуче́нию — radiosensitivity, radiosusceptibility, dosage sensitivity, irradiance responsivityконтра́стная чувстви́тельность кфт. — contrast sensitivityчувстви́тельность к освещё́нности ( фотоприемника) — illumination responsivityмонохромати́ческая чувстви́тельность — monochromatic sensitivityчувстви́тельность обнаруже́ния — detection sensitivityотноси́тельная чувстви́тельность — relative sensitivityчувстви́тельность по давле́нию — pressure sensitivityпо́лная чувстви́тельность — total sensitivityчувстви́тельность по напряже́нию — voltage sensitivityчувстви́тельность по отклоне́нию — deflection sensitivityпоро́говая чувстви́тельность — threshold sensitivityчувстви́тельность по то́ку — current sensitivityпреде́льная чувстви́тельность — threshold [ultimate, limiting] sensitivityприведё́нная чувстви́тельность ( измерительного прибора) — factor of meritчувстви́тельность приё́мника, реа́льная — minimum discernible signal of a receiverсветова́я чувстви́тельность — light [luminous] sensitivityспектра́льная чувстви́тельность — spectral responseстати́ческая чувстви́тельность — static sensitivity, static responsivityчувстви́тельность счё́тчика по мо́щности — starting power of a meterчувстви́тельность телефо́нного аппара́та к вызывно́му то́ку — response of a telephone set to a ringing toneэлектроакусти́ческая чувстви́тельность ( линии связи) — electroacoustic responseРусско-английский политехнический словарь > чувствительность
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12 чувствительность
ж. sensitivityСинонимический ряд:1. впечатлительность (сущ.) восприимчивость; впечатлительность2. ощутимость (сущ.) осязаемость; ощутимостьРусско-английский большой базовый словарь > чувствительность
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13 Introduction
Portugal is a small Western European nation with a large, distinctive past replete with both triumph and tragedy. One of the continent's oldest nation-states, Portugal has frontiers that are essentially unchanged since the late 14th century. The country's unique character and 850-year history as an independent state present several curious paradoxes. As of 1974, when much of the remainder of the Portuguese overseas empire was decolonized, Portuguese society appeared to be the most ethnically homogeneous of the two Iberian states and of much of Europe. Yet, Portuguese society had received, over the course of 2,000 years, infusions of other ethnic groups in invasions and immigration: Phoenicians, Greeks, Celts, Romans, Suevi, Visigoths, Muslims (Arab and Berber), Jews, Italians, Flemings, Burgundian French, black Africans, and Asians. Indeed, Portugal has been a crossroads, despite its relative isolation in the western corner of the Iberian Peninsula, between the West and North Africa, Tropical Africa, and Asia and America. Since 1974, Portugal's society has become less homogeneous, as there has been significant immigration of former subjects from its erstwhile overseas empire.Other paradoxes should be noted as well. Although Portugal is sometimes confused with Spain or things Spanish, its very national independence and national culture depend on being different from Spain and Spaniards. Today, Portugal's independence may be taken for granted. Since 1140, except for 1580-1640 when it was ruled by Philippine Spain, Portugal has been a sovereign state. Nevertheless, a recurring theme of the nation's history is cycles of anxiety and despair that its freedom as a nation is at risk. There is a paradox, too, about Portugal's overseas empire(s), which lasted half a millennium (1415-1975): after 1822, when Brazil achieved independence from Portugal, most of the Portuguese who emigrated overseas never set foot in their overseas empire, but preferred to immigrate to Brazil or to other countries in North or South America or Europe, where established Portuguese overseas communities existed.Portugal was a world power during the period 1415-1550, the era of the Discoveries, expansion, and early empire, and since then the Portuguese have experienced periods of decline, decadence, and rejuvenation. Despite the fact that Portugal slipped to the rank of a third- or fourth-rate power after 1580, it and its people can claim rightfully an unusual number of "firsts" or distinctions that assure their place both in world and Western history. These distinctions should be kept in mind while acknowledging that, for more than 400 years, Portugal has generally lagged behind the rest of Western Europe, although not Southern Europe, in social and economic developments and has remained behind even its only neighbor and sometime nemesis, Spain.Portugal's pioneering role in the Discoveries and exploration era of the 15th and 16th centuries is well known. Often noted, too, is the Portuguese role in the art and science of maritime navigation through the efforts of early navigators, mapmakers, seamen, and fishermen. What are often forgotten are the country's slender base of resources, its small population largely of rural peasants, and, until recently, its occupation of only 16 percent of the Iberian Peninsula. As of 1139—10, when Portugal emerged first as an independent monarchy, and eventually a sovereign nation-state, England and France had not achieved this status. The Portuguese were the first in the Iberian Peninsula to expel the Muslim invaders from their portion of the peninsula, achieving this by 1250, more than 200 years before Castile managed to do the same (1492).Other distinctions may be noted. Portugal conquered the first overseas empire beyond the Mediterranean in the early modern era and established the first plantation system based on slave labor. Portugal's empire was the first to be colonized and the last to be decolonized in the 20th century. With so much of its scattered, seaborne empire dependent upon the safety and seaworthiness of shipping, Portugal was a pioneer in initiating marine insurance, a practice that is taken for granted today. During the time of Pombaline Portugal (1750-77), Portugal was the first state to organize and hold an industrial trade fair. In distinctive political and governmental developments, Portugal's record is more mixed, and this fact suggests that maintaining a government with a functioning rule of law and a pluralist, representative democracy has not been an easy matter in a country that for so long has been one of the poorest and least educated in the West. Portugal's First Republic (1910-26), only the third republic in a largely monarchist Europe (after France and Switzerland), was Western Europe's most unstable parliamentary system in the 20th century. Finally, the authoritarian Estado Novo or "New State" (1926-74) was the longest surviving authoritarian system in modern Western Europe. When Portugal departed from its overseas empire in 1974-75, the descendants, in effect, of Prince Henry the Navigator were leaving the West's oldest empire.Portugal's individuality is based mainly on its long history of distinc-tiveness, its intense determination to use any means — alliance, diplomacy, defense, trade, or empire—to be a sovereign state, independent of Spain, and on its national pride in the Portuguese language. Another master factor in Portuguese affairs deserves mention. The country's politics and government have been influenced not only by intellectual currents from the Atlantic but also through Spain from Europe, which brought new political ideas and institutions and novel technologies. Given the weight of empire in Portugal's past, it is not surprising that public affairs have been hostage to a degree to what happened in her overseas empire. Most important have been domestic responses to imperial affairs during both imperial and internal crises since 1415, which have continued to the mid-1970s and beyond. One of the most important themes of Portuguese history, and one oddly neglected by not a few histories, is that every major political crisis and fundamental change in the system—in other words, revolution—since 1415 has been intimately connected with a related imperial crisis. The respective dates of these historical crises are: 1437, 1495, 1578-80, 1640, 1820-22, 1890, 1910, 1926-30, 1961, and 1974. The reader will find greater detail on each crisis in historical context in the history section of this introduction and in relevant entries.LAND AND PEOPLEThe Republic of Portugal is located on the western edge of the Iberian Peninsula. A major geographical dividing line is the Tagus River: Portugal north of it has an Atlantic orientation; the country to the south of it has a Mediterranean orientation. There is little physical evidence that Portugal is clearly geographically distinct from Spain, and there is no major natural barrier between the two countries along more than 1,214 kilometers (755 miles) of the Luso-Spanish frontier. In climate, Portugal has a number of microclimates similar to the microclimates of Galicia, Estremadura, and Andalusia in neighboring Spain. North of the Tagus, in general, there is an Atlantic-type climate with higher rainfall, cold winters, and some snow in the mountainous areas. South of the Tagus is a more Mediterranean climate, with hot, dry, often rainless summers and cool, wet winters. Lisbon, the capital, which has a fifth of the country's population living in its region, has an average annual mean temperature about 16° C (60° F).For a small country with an area of 92,345 square kilometers (35,580 square miles, including the Atlantic archipelagos of the Azores and the Madeiras), which is about the size of the state of Indiana in the United States, Portugal has a remarkable diversity of regional topography and scenery. In some respects, Portugal resembles an island within the peninsula, embodying a unique fusion of European and non-European cultures, akin to Spain yet apart. Its geography is a study in contrasts, from the flat, sandy coastal plain, in some places unusually wide for Europe, to the mountainous Beira districts or provinces north of the Tagus, to the snow-capped mountain range of the Estrela, with its unique ski area, to the rocky, barren, remote Trás-os-Montes district bordering Spain. There are extensive forests in central and northern Portugal that contrast with the flat, almost Kansas-like plains of the wheat belt in the Alentejo district. There is also the unique Algarve district, isolated somewhat from the Alentejo district by a mountain range, with a microclimate, topography, and vegetation that resemble closely those of North Africa.Although Portugal is small, just 563 kilometers (337 miles) long and from 129 to 209 kilometers (80 to 125 miles) wide, it is strategically located on transportation and communication routes between Europe and North Africa, and the Americas and Europe. Geographical location is one key to the long history of Portugal's three overseas empires, which stretched once from Morocco to the Moluccas and from lonely Sagres at Cape St. Vincent to Rio de Janeiro, Brazil. It is essential to emphasize the identity of its neighbors: on the north and east Portugal is bounded by Spain, its only neighbor, and by the Atlantic Ocean on the south and west. Portugal is the westernmost country of Western Europe, and its shape resembles a face, with Lisbon below the nose, staring into theAtlantic. No part of Portugal touches the Mediterranean, and its Atlantic orientation has been a response in part to turning its back on Castile and Léon (later Spain) and exploring, traveling, and trading or working in lands beyond the peninsula. Portugal was the pioneering nation in the Atlantic-born European discoveries during the Renaissance, and its diplomatic and trade relations have been dominated by countries that have been Atlantic powers as well: Spain; England (Britain since 1707); France; Brazil, once its greatest colony; and the United States.Today Portugal and its Atlantic islands have a population of roughly 10 million people. While ethnic homogeneity has been characteristic of it in recent history, Portugal's population over the centuries has seen an infusion of non-Portuguese ethnic groups from various parts of Europe, the Middle East, and Africa. Between 1500 and 1800, a significant population of black Africans, brought in as slaves, was absorbed in the population. And since 1950, a population of Cape Verdeans, who worked in menial labor, has resided in Portugal. With the influx of African, Goan, and Timorese refugees and exiles from the empire—as many as three quarters of a million retornados ("returned ones" or immigrants from the former empire) entered Portugal in 1974 and 1975—there has been greater ethnic diversity in the Portuguese population. In 2002, there were 239,113 immigrants legally residing in Portugal: 108,132 from Africa; 24,806 from Brazil; 15,906 from Britain; 14,617 from Spain; and 11,877 from Germany. In addition, about 200,000 immigrants are living in Portugal from eastern Europe, mainly from Ukraine. The growth of Portugal's population is reflected in the following statistics:1527 1,200,000 (estimate only)1768 2,400,000 (estimate only)1864 4,287,000 first census1890 5,049,7001900 5,423,0001911 5,960,0001930 6,826,0001940 7,185,1431950 8,510,0001960 8,889,0001970 8,668,000* note decrease1980 9,833,0001991 9,862,5401996 9,934,1002006 10,642,8362010 10,710,000 (estimated)
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