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71.
Ladouceur R Bouchard C Rhéaume N Jacques C Ferland F Leblond J Walker M 《Journal of gambling studies / co-sponsored by the National Council on Problem Gambling and Institute for the Study of Gambling and Commercial Gaming》2000,16(1):1-24
The South Oaks Gambling Screen (SOGS) is widely used to assess the prevalence of pathological gambling. For a variety of reasons, this instrument may not provide an accurate rate of the prevalence of pathological gambling. In this paper, one source of error in data provided by the SOGS is investigated. It is argued that individuals may not fully understand the meaning of some items, and that clarification of the meaning of misunderstood items may in some cases lead to a changed score on the scale. The present study evaluates respondents' understanding of the SOGS items. The results from three studies are reported, each using a different sample: grade school children, adolescents and adults. It was hypothesised that (1) participants would not understand some items of the SOGS, (2) problem gamblers and probable pathological gamblers would be more inclined to interpret items incorrectly than would non-problem gamblers and, (3) consistent with the first two hypotheses, clarification of items would decrease the number of participants identified as problem gamblers or probable pathological gamblers. The data obtained supported hypotheses 1 and 3. Furthermore, hypothesis 2 was supported for grade school children, but not for adolescents or adults. These results are consistent with recent literature on endorsement and acquiescence phenomena, and have implications for prevalence studies of probable pathological gambling. 相似文献
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74.
Methods for measuring school performance through cohort analysis 总被引:1,自引:0,他引:1
Jacques Légaré 《Demography》1972,9(4):617-624
In order to evaluate the main educational characteristics of a grade cohort—which are the proportion of those who get a degree, the average time spent in school and finally the mean educational attainment of the cohort—we present a school system in which repeat enrolments are well identified. In this discrete model, we present, for each grade, three transition coefficients: the proportion of those passing to the next grade, the proportion of those repeating the grade and the proportion of those leaving the school system. Afterwards, we set up a system of equations leading to the distribution of the entrants in the cohort according to the levels of their educational attainment, a system of equations for which a simple solution will depend on two assumptions. 相似文献
75.
76.
This paper considers a generalized version of the trip packing problem that we encountered as a sub-problem of the petrol stations replenishment problem. In this version we have to assign a number of trips to a fleet composed of a limited number of non-identical tank-trucks. Each trip has a specific duration, working time of vehicles is limited and the net revenue of each trip depends on the truck used. The paper provides a mathematical formulation of the problem and proposes some construction, improvement and neighbourhood search solution heuristics. A set of benchmark problem instances is created in a way that reflects real-life situations and used to analyse the performance of the proposed heuristics. A real-life case is also used to further assess the proposed heuristics. 相似文献
77.
Subnational population projections in New Zealand by means of the conventional deterministic cohort-component method have had a tendency to be conservative: underprojecting fast-growing populations and overprojecting slow-growing ones. In this paper we use a stochastic population projection method as an alternative. We generate population projections for five demographically distinct administrative areas within the Waikato region of New Zealand: Hamilton City, Franklin District, Thames-Coromandel District, Otorohanga District and South Waikato District. The results are compared to official subnational deterministic projections. The accuracy of subnational population projections in New Zealand is strongly affected by the instability of migration as a component of population change. Differently from the standard cohort-component method, in which net migration levels are projected, the key parameters of our method are age-gender-area specific probabilistic net migration rates. Generally, the identified and modelled uncertainty makes the traditional ‘mid-range’ scenario of subnational deterministic projections of limited use for policy analysis or planning beyond a relatively short projection horizon. We find that the projected range of rates of population growth is wider for smaller regions and/or regions more strongly affected by net migration. Directions for further development of the methodology are suggested. 相似文献
78.
This paper looks at the intergenerational transmission of opportunities for standard of living in Latin America. It proposes
to study this question on the basis of an ordinal approach. This ordinal approach borrows recent ideas on the way to compare
opportunity sets, that is, to rank matrices giving, for example, the distribution of individuals by level of education of
their parents and the standard of living (income) of the group to which they belong. Such comparisons are based on the use
of the concepts of rank and Generalized Lorenz Dominance. The empirical illustration is based on the data of the 2006 Latinobarómetro
survey which covered 18 Latin American countries and the standard of living of individuals (children) was derived from an
algorithm allowing one to compute the order of acquisition of durable goods and access to services. 相似文献
79.
Graziella Caselli Jacques Vallin James W. Vaupel Anatoli Yashin 《Revue europeenne de demographie》1987,3(1):33-60
Although France and Italy currently exhibit very similar expectations of life, their mortality patterns by age and sex are not the same. The differences were much greater at the beginning of the century than they are now. Graphical presentation of the data since 1900 by age, period and birth cohort is used to explore in detail the differences in trends and to bring out, in particular, differences between the two countries in period and cohort effects. In addition to providing more details on well-known period effects — the secular decline in mortality in both countries (with Italy largely ‘catching up’ with France), and the immediate effects of the world wars — similarities and differences in cohort effects are also apparent. The two countries exhibit clear differences not only in terms of immediate casualties of the wars, but also in terms of the long-term impact of unfavourable wartime living conditions on the cohorts most affected. 相似文献
80.