全文获取类型
收费全文 | 160篇 |
免费 | 4篇 |
专业分类
管理学 | 20篇 |
民族学 | 2篇 |
人口学 | 26篇 |
丛书文集 | 1篇 |
理论方法论 | 15篇 |
社会学 | 88篇 |
统计学 | 12篇 |
出版年
2021年 | 2篇 |
2019年 | 5篇 |
2018年 | 4篇 |
2017年 | 6篇 |
2016年 | 2篇 |
2015年 | 3篇 |
2014年 | 5篇 |
2013年 | 28篇 |
2012年 | 6篇 |
2011年 | 3篇 |
2010年 | 3篇 |
2009年 | 3篇 |
2008年 | 4篇 |
2007年 | 4篇 |
2006年 | 5篇 |
2004年 | 4篇 |
2003年 | 2篇 |
2002年 | 3篇 |
2001年 | 2篇 |
1999年 | 6篇 |
1998年 | 3篇 |
1997年 | 2篇 |
1996年 | 3篇 |
1994年 | 4篇 |
1992年 | 1篇 |
1991年 | 1篇 |
1990年 | 2篇 |
1989年 | 1篇 |
1988年 | 1篇 |
1987年 | 3篇 |
1986年 | 1篇 |
1985年 | 4篇 |
1984年 | 2篇 |
1983年 | 3篇 |
1982年 | 6篇 |
1981年 | 2篇 |
1980年 | 3篇 |
1979年 | 1篇 |
1978年 | 2篇 |
1977年 | 1篇 |
1976年 | 1篇 |
1975年 | 4篇 |
1974年 | 1篇 |
1973年 | 1篇 |
1972年 | 1篇 |
1971年 | 1篇 |
1969年 | 1篇 |
1967年 | 1篇 |
1966年 | 3篇 |
1964年 | 1篇 |
排序方式: 共有164条查询结果,搜索用时 781 毫秒
61.
62.
63.
David Myers 《Qualitative sociology》1987,10(3):251-266
This study looks at the behavior of self-selected users of an electronic bulletin board system (BBS). Its goal is to investigate the reported lack of social context cues in computer mediated communication contexts. Using participant observation methods, the study demonstrates how BBS users establish online identities. The study also identifies communication leaders who maintain their identities and leadership roles through manipulation of the BBS social context. These findings appear to contradict perspectives that characterize computer-mediated communications as deindividuated (Kiesler et al, 1984). 相似文献
64.
Energy constitutes a small fraction of the production inputs in the economy, yet the rigidity imposed by the short and medium term inability to substitute energy with other production factors in case of an energy shortage, requires the establishment of safeguard mechanisms to ensure sufficient energy supply during an emergency. These safeguards usually take the form of strategic energy reserves. A methodological approach is presented here, relating the level of strategic petroleum reserves, the decision variable, with the costs associated with their storage and the economic losses incurred by an energy shortage. This approach is based on the use of a decision tree, to portray emergency scenarios. Each scenario, a branch of the decision tree, can be evaluated in terms of a cost function which includes the inventory procurement and maintenance cost and the shortage cost inflicted by a petroleum shortfall. 相似文献
65.
Myers RJ 《Demography》1966,3(2):545-547
The so-called Medicare program enacted by the 1965 Amendments to the Social Security Act will have a significant impact on demographic studies, in view of the vast amount of previously unobtainable data that will be made available. Not only will there be extensive information in regard to hospitalization and other medical-care costs for persons aged 65 and over (with adequate subdivisions by age and sex) but also reliable data in regard to the true size of the population aged 65 and over will be produced.The reason for this latter result is that virtually all pereons aged 65 and over in the country will become eligible for hospital insurance, even though they may not have been previously covered, or have been survivors of persons covered, under the Old-Age, Survivors, and Disability Insurance System. As a result, not only will there be an accurate count (unlike the census, where the enumeration necessarily is not complete), but also there will be a verification of age, since this is necessary under the claims process. 相似文献
66.
Environmental Refugees 总被引:3,自引:1,他引:2
Norman Myers 《Population and environment》1997,19(2):167-182
There are fast-growing numbers of people who can no longer gain a secure livelihood in their homelands because of drought, soil erosion, desertification, deforestation and other environmental problems. In their desperation, these environmental refugees—as they are increasingly coming to be known and as they are termed in this paper—feel they have no alternative but to seek sanctuary elsewhere, however hazardous the attempt. Not all of them have fled their countries, many being internally displaced. But all have abandoned their homelands on a semi-permanent if not permanent basis, having little hope of a foreseeable return. 相似文献
67.
68.
Norma Myers 《Immigrants & Minorities》2013,31(3):292-307
Over the past two decades historians have displayed an increasing interest in the history of black people in Britain. As a result of important recent work much is now known of a group of exceptional black literary figures (Equiano, Sancho, and Cugoano), the ‘leaders’ of the black community, whilst the vast majority of eighteenth and nineteenth century black people remain in anonymity. This anonymity is attributable in part to the paucity of primary source material relating to rank‐and‐file blacks. In order to gain insights into the black community, this article analyses criminal records — a class of records whose value for our purposes is that it focuses essentially on the eighteenth and nineteenth century poor, both black and white. 相似文献
69.
The procedure of steepest ascent consists of performing a sequence of sets of trials. Each set of trials is obtained as a result of proceeding sequentially along the path of maximum increase in response. Until now there has been no formal stopping rule, When response values are subject to random error, the decision to stop can be premature due to a “false” drop in the observed response. A new stopping rule procedure for steepest ascent is intro-duced that takes into account the random error variation in response values. The new procedure protects against taking too many observations when the true mean response is decreasing, it also protects against stopping. prematurely when the true mean response is increasing, A numerical example is given which illus-trates the method. 相似文献
70.
John Myles Feng Hou Garnett Picot Karen Myers 《Population research and policy review》2009,28(5):693-720
Despite comparatively modest welfare reforms in Canada relative to those of the United States, employment rates and earnings
among single mothers have risen by virtually identical magnitudes in the two countries since 1980. We show that most of the
gains in Canada and a substantial share of the change in the US were the result of the dynamics of cohort replacement and
population aging as the large and better educated baby boom generation replaced earlier cohorts and began entering their forties.
In both countries, demographic effects were the main factor accounting for higher employment and earnings among older (40+)
single mothers. Changes among younger single mothers, in contrast, were mainly the result of changes in labor market behavior
and other unmeasured variables. Overall, demographic changes dominated in Canada but not in the US for two reasons: (a) Canadian
single mothers are significantly older than their US counterparts; and (b) consistent with the welfare reform thesis, the
magnitude of behavioral change among younger single mothers was much larger in the US. 相似文献