全文获取类型
收费全文 | 22670篇 |
免费 | 559篇 |
专业分类
管理学 | 3108篇 |
民族学 | 99篇 |
人才学 | 2篇 |
人口学 | 2154篇 |
丛书文集 | 133篇 |
教育普及 | 3篇 |
理论方法论 | 2055篇 |
现状及发展 | 1篇 |
综合类 | 461篇 |
社会学 | 11027篇 |
统计学 | 4186篇 |
出版年
2023年 | 130篇 |
2021年 | 120篇 |
2020年 | 340篇 |
2019年 | 423篇 |
2018年 | 478篇 |
2017年 | 693篇 |
2016年 | 538篇 |
2015年 | 392篇 |
2014年 | 464篇 |
2013年 | 3807篇 |
2012年 | 721篇 |
2011年 | 614篇 |
2010年 | 450篇 |
2009年 | 460篇 |
2008年 | 515篇 |
2007年 | 530篇 |
2006年 | 446篇 |
2005年 | 584篇 |
2004年 | 516篇 |
2003年 | 448篇 |
2002年 | 495篇 |
2001年 | 559篇 |
2000年 | 553篇 |
1999年 | 543篇 |
1998年 | 369篇 |
1997年 | 351篇 |
1996年 | 355篇 |
1995年 | 336篇 |
1994年 | 321篇 |
1993年 | 315篇 |
1992年 | 384篇 |
1991年 | 357篇 |
1990年 | 345篇 |
1989年 | 376篇 |
1988年 | 331篇 |
1987年 | 305篇 |
1986年 | 309篇 |
1985年 | 327篇 |
1984年 | 342篇 |
1983年 | 335篇 |
1982年 | 270篇 |
1981年 | 232篇 |
1980年 | 226篇 |
1979年 | 286篇 |
1978年 | 217篇 |
1977年 | 196篇 |
1976年 | 180篇 |
1975年 | 173篇 |
1974年 | 167篇 |
1973年 | 156篇 |
排序方式: 共有10000条查询结果,搜索用时 359 毫秒
931.
Avery C. Edenfield Fredrik O. Andersson 《Voluntas: International Journal of Voluntary and Nonprofit Organizations》2018,29(5):1033-1043
This article examines how a social venture transitions from nascent to formal status and argues that the transformation of the organization set in motion by establishing formal boundaries is a deeply profound one. Drawing from the nonprofit and social entrepreneurship literature on what prompts and energizes individuals to initiate new not-for-profit ventures, and linking it to a notion of revolutionary crisis as organizations emerge and develop, we seek to illuminate and explore the tension, and its consequences, between nonprofit entrepreneurs and the organization they create as the new venture transitions from nascent to formal. We do this by presenting the results from an in-depth case study examining the gestation and boundary-forming phases of Robert’s Place Cooperative, a plucky start-up cooperative in a midsize Midwestern city. 相似文献
932.
In the current investigation, idiosyncratic deals (i-deals; individualized work arrangements) are modeled as differentiated resources that shape leader-member exchange (LMX) relationships in workgroups. We integrate literature on leader-member exchange (LMX) with research on i-deals to argue that employee evaluations of i-deals received from the grantor –typically the leader- enhance employee perceptions of LMX, which in turn become instrumental in generating positive performance outcomes. Furthermore, because workgroup characteristics have potential implications on the relationship between a deal grantor and the deal recipient, drawing upon social identity theory of leadership, we reason that the i-deals-LMX relationship is affected by the overall value congruence among the group members. Cross-level moderated mediation analyses on multi source data obtained from 289 employees nested in 60 workgroups showed that the mediational role of LMX in the i-deals to performance outcomes relationship was weaker in high value congruence groups. 相似文献
933.
A simple connected graph G with 2n vertices is said to be k-extendable for an integer k with \(0<k<n\) if G contains a perfect matching and every matching of cardinality k in G is a subset of some perfect matching. Lakhal and Litzler (Inf Process Lett 65(1):11–16, 1998) discovered a polynomial algorithm that decides whether a bipartite graph is k-extendable. For general graphs, however, it has been an open problem whether there exists a polynomial algorithm. The new result presented in this paper is that the extendability problem is co-NP-complete. 相似文献
934.
Despite its connotations of non‐compliance, illegality, social exploitation and marginality, the informal sector is a substantial contributor to economic life in developing countries and, increasingly, in more technologically advanced activities. Its prevalence in developed economies has also become more widely recognized. In light of its significance, this paper reviews research on the informal sector from a management and organization scholarship perspective, rather than from an entrepreneurship view, as has been the focus until now. It sets out the atypical management practices that are inherent in the sector, explores the under‐researched relationship between formal and informal firms, and highlights definitional, conceptual and other limitations in extant research. As a step in resolving these issues, the authors present a conceptual model of formality and informality in a three‐dimensional framework that highlights an organizational infrastructure dimension, a view of firms operating along a continuum, and a multi‐level analytical context. Building on this, the authors detail opportunities for enhanced appreciation of in situ management and organizational practices in the informal sector and outline tools for pursuing a management and organization scholarship agenda. Overall, the authors argue that management scholarship has great potential to improve understanding of the informal sector, and that the informal sector provides opportunities to advance management theory, research and practice. 相似文献
935.
In this article, we examine birth cohort differences in parents’ provision of monetary help to adult children with particular focus on the extent to which cohort differences in family structure and the transition to adulthood influence these changes. Using data from the Health and Retirement Study from 1994 to 2010, we compare financial help to children of three respondent cohorts as the parents in these birth cohorts from ages 53–58 to 57–62. We find that transfers to children have increased among more recent cohorts. Two trends—declining family size and children’s delay in marriage—account for part of the increase across cohorts. However, other trends, such as the increase in the number of stepchildren and increasing child’s income level, tend to decrease the observed cohort trend. 相似文献
936.
937.
C.C. Heyde 《Journal of statistical planning and inference》1996,50(3):373-378
This paper illustrates the use of quasi-likelihood methods of inference for hidden Markov random fields. These are simple to use and can be employed under circumstances where only the model form and its covariance structure are specified. In particular they can be used to derive the same estimating equations as the E-M algorithm or change of measure methods, which make full distributional assumptions. 相似文献
938.
In the last decade the Maltese population has seen an influx of overseas-born individuals. This has been largely due to Malta’s
access to the European Union and the increased intake of refugee immigrants. These immigration trends have resulted in changes
in population composition, with the overseas-born population increasing from 17,740 (4.7%) in 1995 to 24,560 (6.1%) in 2005.
There has also been an increase in the proportion of births registered in Malta to overseas citizens, including citizens of
non-EU Europe (1.1%); the African continent (1.5%); America (0.3%); and Asia (0.8%). About ten per cent of marriages in Malta
are between a Maltese spouse and a foreigner. The data suggest that the Maltese population is slowly becoming more cosmopolitan,
a trend that is gradually changing the ethnic composition of the Maltese community. 相似文献
939.
The Japanese system of school–work has been widely admired for the strong communication and recruitment relationships that exist between high schools and employers. We develop a framework for understanding the macro-level conditions that fostered the effectiveness of the system up until the early 1990s. These conditions included a stratified secondary educational system, a large supply of high-quality high school graduates, and high demand for young workers to fill entry-level positions in the internal labor markets of large firms. We use original data from a sample of urban high schools to analyze how Japanese employers’ recruitment patterns changed in the 1990s and beyond. The results of that analysis and a counterfactual analysis suggest that recent changes, especially in Japanese employment institutions, have significantly weakened high school–employer relationships. We suggest implications of the Japanese case for school–work processes in other postindustrial societies. 相似文献
940.
The aims of this investigation were (1) to measure the impact of arts-related activities on the perceived quality of life
of a representative sample of British Columbians aged 18 years or more in the spring of 2007, and (2) to compare the findings
of this study with those of a sample of 1,027 adults drawn from five B.C. communities (Comox Valley, Kamloops, Nanaimo, Port
Moody and Prince George) in the fall of 2006. Seven hundred and eight British Columbians responded to a mailed out questionnaire,
and the working data set was weighted by age and education to match the 2006 census statistics for the province, yielding
a fairly representative sample. Speaking quite generally, about 62.0% of the results for the two samples are very similar.
In particular, in both surveys we found that (a) among arts-related activities in which people participate relatively infrequently
(i.e., participation is counted in times per year rather than in hours per week), live theatre is supreme in the strength of its positive correlation with respondents’ perceived quality of life measured
in 7 different ways, and (b) compared to 4 demographic variables (age, education, household income and body mass index), household
income had the highest average, positive correlation with 7 different measures of respondents’ overall life assessments, namely,
self-assessed general health, satisfaction with life as a whole (single item), happiness, satisfaction with the quality of
life, satisfaction with life as a whole (5-item index), contentment with life (5-item index) and subjective wellbeing (4-item
index). Different results were found in the province-wide versus the five-communities survey for the following, among other
things, (a) compared to all 7 life assessment measures, for the province, satisfaction with the quality of life and happiness
had the largest number of significant correlations with arts-related activities measured in hours per week engaged, while for the five communities, the single measure of satisfaction with the quality of life had the largest number
of significant correlations, and (b) For the province, compared to all 7 life assessment measures, satisfaction with the quality
of life had the largest number of significant correlations with arts-related activities measured in times per year engaged; for the five communities, compared to all 7 life assessment measures, self-assessed general health had the largest
number of significant correlations with arts-related activities measured in times per year engaged. 相似文献