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PubMed1979

Concise report on the monitoring of population policies.

"This article presents a concise report on the findings of the second round of monitoring of population policies, called for in the World Population Plan of Action. It summarizes the findings as they refer to Governments' perceptions and policies with regard to population increase, mortality, fertility, internal migration and international migration. It also provides a general picture of some present and future problems associated with population policies in both developed and developing countries

Legislation as Topic↗
PubMedDate not supplied

[Lymphocyte migration in internally irradiated animals. Effect of internal gamma radiation on the migration properties of spleen lymphocytes labeled with 51Cr].

In experiments on CBA mice it was shown that migration of 51Cr-labeled spleen lymphocytes, injected intravenously, to lymph nodes of intact recipients was suppressed 6-24 months after the administration of a radiopharmaceutic preparation of selenium-75-selenomethionine in a quantity forming the doses of 1 Gy and 1.5 Gy absorbed within the whole body and lymphoid organs, respectively. Migration of labeled lymphocytes to the liver, kidneys and lungs, as well as their retention in the circulating blood, were increased. As the result of the migration disorders the specific affinity of lymphocytes for peripheral lymphoid tissue decreased.

Animals↗
PubMedDate not supplied

[Lymphocyte migration in internally irradiated animals. Effect of internal beta radiation on the migration of spleen lymphocytes in CBA mice].

The syngeneic transfer system was used to study migration of 51Cr-labelled spleen lymphocytes in mice after incorporation of beta-emitter, 35S-methionine. Migration of 51Cr-labelled lymphocytes to lymph nodes was stably decreased, and to liver, kidneys and lungs increased. The lymphocyte migration impairment was associated with the influence of beta-radiation on both the migratory properties of cells and the factors of their microenvironment responsible for the lymphocyte migration within the mouse body. No distinctions were observed in the character and manifestation of disturbances of the lymphocyte migration after the injection of 35S-methionine and gamma-emitter, 75Se-selenomethionine.

Animals↗
PubMed2003

[Simulation of migration from internal can coatings].

Migration from can-coatings into retorted canned food simulants (canned oil and water, 121 degrees C, 30 min) was investigated through HPLC with a fluorescence detector and evaporative light scattering detector, and by measurements of residue on evaporation and consumption of potassium permanganate. HPLC analysis revealed that migration into the canned oil was hundreds of times more than that into n-heptane (25 degrees C, 60 min, the official test conditions according to the Japanese Food Sanitation Law), whereas it was similar to the migration into isooctane-butyl acetate mixtures (60 degrees C, 60 min), and that migration into the canned water was several times more than that into water (95 degrees C, 30 min, the official test conditions). Residue on evaporation for the n-heptane extract was several-fold lower than 30 ppm (the official limit), whereas that for the isooctane-butyl acetate mixtures exceeded 30 ppm. Consumption of potassium permanganate for the canned water was 30 times higher than that for the water extract (95 degrees C, 30 min). The official test conditions for can-coatings, in particular the use of n-heptane as an oil simulant, were suggested to lead to substantial underestimation of migration into canned food.

Chromatography, High Pressure Liquid↗
PubMed1990

International labour migration in Nigeria 1976-1986: employment, nationality and ethnicity.

International migration trends associated with the oil boom and bust that occurred in Nigeria between 1976 and 1986 are analyzed. "Large numbers came from Ghana..., [and] Niger, Chad and Togo, whose countries were suffering from a mixture of drought, political instability and stagnant economies. The resultant labour market became segmented according to job skills, nationality and ethnicity...." The decline in the oil industry led to the expulsion of some two million aliens between 1983 and 1986, causing considerable friction between Nigeria and its neighbors. The author concludes that "the rise and fall of migrant labour in Nigeria and the political situation within the country were embedded in the changing regional political economy of West Africa and its linkages to the larger world capitalist economy." (SUMMARY IN GER)

Africa↗
PubMed1978

Some aspects of internal annual migration in India.

Data collected in 1973-1974 during the twenty-eighth round of the National Sample Survey are used to analyze annual internal migration in India. "The analysis reveals that [the in-migration] rate for all-India was estimated at 91 for the rural and 104 for the urban areas per 10,000 population. Out of the total migration intra-state migration was as high as 87 percent and more than 68 percent came from rural areas. The most important flow of migration was rural to rural and next to that was urban to urban followed by rural to urban and urban to rural." Findings are also presented concerning variations among states, rates of urbanization, the age and sex composition of migrants, reasons for migration, the educational level of labor migrants, and changes since the 1963-1964 round of the survey.

Age Distribution↗
PubMed1992

The future of international labor migration.

"The article reviews the nature of international labor migration today and the economic and political rationale for its occurrence. It suggests that while the developed economies will continue to attract and exchange highly skilled labor, they will have little need for mass immigration by those with low skill levels. In contrast, poorer countries with rapid population growth and low living standards will encourage emigration, except by the highly skilled. One consequence will be more illegal immigration."

Demography↗
PubMedDate not supplied

Governments' perceptions and policies of population redistribution in East and South East Asia.

"This paper is based on the results of the Third Inquiry among Governments on Population and Development carried out in 1977 by the UN Secretariat. It reports on perceptions and policies concerning international migrations, spatial distribution of the national population, internal migration and settlement patterns in fourteen South East and East Asian countries. "It appears that nearly all countries under consideration were concerned with the spatial distribution of population both as a factor related to problems caused by excessive natural increase and as a problem on its own right. The majority of countries were prepared to pursue policies affecting basic trends in internal migration. Most governments declared their willingness to alter patterns of rural or both rural and urban settlement. Only two countries were interested in increasing emigration; the remaining ones were satisfied with the existing levels of international migration."

Asia↗
PubMed1991

A historical demography of Chinese migration.

Trends in international migration from China are analyzed from historical times to the present. "The study will involve discussions about the nature of migration and the different forms it took in five different stages, in the light of 1) changes in motivation, 2) type of migration, and 3) the distribution of the out-going population."

Asia↗
PubMed1993

[Confronting the statistics on intra-European migration: toward greater harmonization?].

"Each international migration stream can be enumerated twice: at the time of departure from the country of emigration and at the time of arrival in the country of immigration. In practice, errors in international migration statistics are a major obstacle to the accurate analysis of migration flows. In connection with the process of harmonization set in train by Eurostat several years ago, a method of correcting defective migration data is proposed here, which makes use of this double enumeration. The method is applied to available data in a preliminary analysis. The correction factors presented here through this mathematical approach should turn out to be useful in more than one respect: to illuminate substantial problems of incompatibility of migration data and to follow the progress of the harmonization of those data." (SUMMARY IN ENG)

Data Collection↗
PubMed1986

International labour migration and uneven regional development in labour exporting countries.

"International labour migration involves 20 million workers from 'middle income' and 'Third World' countries. The article reviews both theoretical propositions and empirical evidence on its effects on regional disparities in labour exporting countries. It shows the variety of ways in which the departure of emigrants affects the uneven development of rural and urban areas there by changing the volume and nature of production as well as welfare conditions. Regional patterns of production and welfare are further modified by the impact of emigrants' remittances and their eventual return."

Demography↗
PubMed2003

Push and pull factors in international nurse migration.

PURPOSE: To describe the push and pull factors of migration in relation to international recruitment and migration of nurses. ORGANIZING CONSTRUCT: Review of literature on nurse migration, examination of effects of donor and receiving countries, and discussion of ethical concerns related to foreign nurse recruitment. FINDINGS: The primary donor countries are Australia, Canada, the Philippines, South Africa, and the United Kingdom (UK); the primary receiving countries are Australia, Canada, Ireland, the UK, and the United States (US). The effects of migration on donor countries include the loss of skilled personnel and economic investment; receiving countries receive skilled nurses to fill critical shortages with less economic investment. Ethical concerns include the potential for exploitation of foreign nurses. CONCLUSIONS: Nurses migrate to seek better wages and working conditions than they have in their native countries. Given the current conditions, developed countries continue to actively recruit foreign nurses to fill critical shortages. Migration is predicted to continue until developed countries address the underlying causes of nurse shortages and until developing countries address conditions that cause nurses to leave.

Australia↗
PubMed1995

Conceptualizing international labor migration: a structuration perspective.

"This article applies the theory of structuration to international labor migration using case study material from the Philippines. It first provides a brief review of the functional and structural approaches to understanding labor migration and the theoretical impasse that has been created between them. It then reviews several attempts to resolve this impasse, including systems and networks approaches; these solutions are rejected on theoretical and empirical grounds. We suggest that migrant institutions may be a more appropriate mid-level concept than households or social networks to articulate various levels of analysis. We develop this concept in the context of the structuration theory of Anthony Giddens and attempt to apply this to the Philippines, concluding that this framework is eminently suited for further research on international labor migration."

Asia↗
PubMedDate not supplied

[Migration patterns of health professionals].

The past three decades have seen the number of international migrants double, to reach the unprecedented total of 175 million people in 2003. National health systems are often the biggest national employer, responsible for an estimated 35 million workers worldwide. Health professionals are part of the expanding global labour market. Today, foreign-educated health professionals represent more than a quarter of the medical and nursing workforces of Australia, Canada, the United Kingdom and the United States. Destination countries, however, are not limited to industrialised nations. For example, 50 per cent of physicians in the Namibia public services are expatriates and South Africa continues to recruit close to 80% of its rural physicians from other countries. International migration often imitates patterns of internal migration. The exodus from rural to urban areas, from lower to higher income urban neighbourhoods and from lower-income to higher-income sectors contributes challenges to the universal coverage of the population. International migration is often blamed for the dramatic health professional shortages witnessed in the developing countries. A recent OECD study, however, concludes that many registered nurses in South Africa (far exceeding the number that emigrate) are either inactive or unemployed. These dire situations constitute a modern paradox which is for the most part ignored. Shared language, promises of a better quality of life and globalization all support the continued existence of health professionals' international migration. The ethical dimension o this mobility is a sensitive issue that needs to be addressed. A major paradigm shift, however, is required in order to lessen the need to migrate rather than artificially curb the flows.

Australia↗
PubMed1978

An economic analysis of migration in Mexico.

This paper analyzes internal migration in Mexico over the 1960-70 period. A model of the determinants of migration is specified and estimated for aggregated interstate migration flows. Results show that distance serves as a significant deterrent to migration, that higher destination earning levels are attractive to migrants, and that regions with high unemployment rates experience lower rates of inmigration. An unanticipated finding is that regions with higher earning levels have greater rates of outmigration. The data are disaggregated to examine separate migration relationships for each state. The results are that distance is a lesser deterrent for those migrants with more accessible alternatives, that higher earning levels reduce the deterring effects of distance, and that regions with higher earning levels have lower associated elasticities of migration. It is concluded that economic factors have played a crucial role in internal migration and thus in the changing occupational and geographic structure of the Mexican labor force.

Americas↗