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Multilingual Demographic Dictionary, second unified edition, English volume
Distance
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Section | English 819 |
Arabic 819 |
Czech 819 |
German 819 |
Spanish 819 |
French 819 |
Italian 819 |
Japanese 819 |
Portuguese 819 |
Russian 819 |
Chinese 819 |
819-1 | migration model | نموذجات الهجرة | migrační modely | Wanderungsmodell | modelos de migración —modelos migratorios |
modèle de migration —modèle migratoire |
modelli di migrazioni —modelli migratori |
移動モデル | modelos de migração —modelos migratórios |
Миграционные модели | 迁移模型 |
819-2 | push factor —repulsion |
نبذ | vytlačující faktory migrace (push factors) | Push-Faktor —Abstoßungskraft |
rechazo —expulsión |
répulsion | push factors —repulsione |
反発 —押し出し要因 |
fatores de expulsão —expulsão —repulsão |
Факторы выталкивания | 排斥 —推力因素 |
819-3 | pull factor —attraction |
جذ ب | přitahující faktory migrace (pull factors) | Pull-Faktor —Anziehungskraft |
atracción | attraction | pull factors —attrazione |
誘引 —牽引要因 |
fatores de atração —atração |
Факторы притяжения | 吸引 —拉力因素 |
819-4 | intervening obstacle | عقبات معترضة | mezilehlé překážky | Hindernis, intervenierendes | obstáculos intermedios | obstacle intermédiaire | ostacoli intermedi | 介在する障害要因 | obstáculos intermediários | Промежуточные факторы | 干扰障碍 |
819-5 | gravity model | نموذجات التجاذب | gravitační model | Gravitationsmodell | modelos gravitatorios —modelos de gravitación |
modèle gravitaire | modelli gravitazionali | 重力モデル | modelos gravitacionais | Гравитационные модели | 引力模型 |
819-6 | distance | مسافة | vzdálenost | Entfernung | distancia | distance | distanza | 距離 | distâncias | Расстояние | 距离 |
819-7 | intervening opportunity | وظائف العمل السانحة فى الطرق | poskytované příležitosti | intervenierende(r,s) Arbeitsplatzangebot —intervenierende Vorteil |
oferta de empleos intermedia | poste intermédiaire offert | opportunità intermedie | 介在機会(介在要因) | oportunidades intervenientes | Возможности в промежуточных регионах | 干扰机会 |
Migration models 1 fall in two broad categories. The first relates migration streams (803-9) between two areas to social, economic or demographic variables. These variables are often classified as push factors 2 when they characterize repulsion 2 from the area of origin, as pull factors 3 resulting in attraction 3 to the area of destination, and as intervening obstacles 4 between the two areas. The simplest of these models are gravity models 5: the streams between the two areas are directly proportional to the size of their population, and inversely proportional to the distance 6 between them, raised to a certain power. Other models consider that the streams are proportional to the opportunities in the area of destination, and inversely proportional to intervening opportunities 7 between origin and destination. Models in the second broad category are stochastic models (730-5) and refer to individuals rather than to populations; they link the probability of migrating to a certain number of personal characteristics such as age or the previous history of migration.
- 5. Or Pareto-type models.
- 6. Distance can be measured in diverse ways: a straight line, the route, the number of intervening areas, etc.
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