首页 | 本学科首页   官方微博 | 高级检索  
文章检索
  按 检索   检索词:      
出版年份:   被引次数:   他引次数: 提示:输入*表示无穷大
  收费全文   1344篇
  免费   90篇
管理学   103篇
民族学   22篇
人口学   149篇
丛书文集   3篇
理论方法论   175篇
综合类   9篇
社会学   887篇
统计学   86篇
  2024年   2篇
  2023年   19篇
  2022年   12篇
  2021年   13篇
  2020年   54篇
  2019年   48篇
  2018年   77篇
  2017年   119篇
  2016年   86篇
  2015年   64篇
  2014年   52篇
  2013年   241篇
  2012年   66篇
  2011年   70篇
  2010年   38篇
  2009年   39篇
  2008年   53篇
  2007年   41篇
  2006年   33篇
  2005年   40篇
  2004年   29篇
  2003年   36篇
  2002年   32篇
  2001年   13篇
  2000年   15篇
  1999年   22篇
  1998年   9篇
  1997年   3篇
  1996年   6篇
  1995年   14篇
  1994年   3篇
  1993年   9篇
  1992年   4篇
  1991年   5篇
  1990年   4篇
  1989年   6篇
  1988年   5篇
  1987年   3篇
  1986年   7篇
  1985年   3篇
  1984年   5篇
  1983年   7篇
  1982年   4篇
  1980年   6篇
  1979年   8篇
  1978年   2篇
  1976年   2篇
  1972年   1篇
  1971年   1篇
  1968年   1篇
排序方式: 共有1434条查询结果,搜索用时 15 毫秒
51.
ABSTRACT

The COVID-19 pandemic has disrupted life as we knew it and created an unprecedented opportunity to pause and assess ‘normal’ life and work. We have an opportunity to create a new ‘normal.’ What possibility does the chance to show up differently in our lives and work hold? The pandemic has caused significant shifts in values that will affect individuals, organizations, communities, and nations. This article challenges HRD scholars and practitioners to imagine how HRD might create a new normal through bold, critical research inquiry that interrogates exclusion, pursues organization and social justice, and creates humanly sustainable organizations and communities.  相似文献   
52.
Job insecurity has become increasingly evident in European countries in recent years. In Germany, legislation has increased insecurity through erosion of the standard employment relationship. Fixed-term contracts are central to definitions of insecurity based on atypical or precarious work but there is still limited understanding of what creates insecurity and how it affects workers. Drawing on Bourdieu’s thesis that “insecurity is everywhere”, the relationships between subjective and objective measures of insecurity are examined for their impact on the 5-year trajectories of life satisfaction of men and women in the age group 27–30. Latent growth curve analysis of data from the German Socio-Economic Panel for 2010–2014 highlights the adverse and lasting effects of subjective concerns about job insecurity on life satisfaction trajectories. This association cuts across educational groups, with far reaching implications as subjective concerns about job security permeate young worker’s lives well beyond the objective condition of being employed on a fixed-term contract.  相似文献   
53.
ABSTRACT

The current study solicits individuals’ artistic depictions and written definitions of family and provides comparisons to existing conceptualizations of family in communication research. Attendees of a Midwestern pride festival took part in an interactive art display, creating a visual representation of their own family on one side of a card and writing their definition of family on the other side. Both images and definitions focused on the ways family members’ behaviors construct family. Participants’ written responses describe family as unconditional, particularly in terms of love, support, and acceptance.  相似文献   
54.
55.
Urbanization affects the availability and diversity of floral resources (pollen and/or nectar) for wild pollinating insects. For example, urban green areas are characterized by an abundance of ornamental plant species. Increasingly, trees are planted to improve the aesthetics of urban streets and parks. These urban trees might offer important floral resources to pollinating insects. To examine the suitability of urban trees as resources for pollinating insects, we investigated the chemical composition of pollen and nectar as well as the amount of nectar produced by the nine major insect-pollinated tree species planted in cities of Western Europe, namely Acer pseudoplatanus, Aesculus carnea, A. hippocastanum, Robinia pseudoacacia, Tilia cordata, T. x euchlora, T. x europaea, T. platyphyllos and T. tomentosa. The analyses revealed that globally the Tilia trees provide pollen with lower contents of polypeptides, amino acids and phytosterols compared with the other species. Urban tree flowers offer abundant nectar with relatively high sugar contents (0.16–1.28 mg/flower); sucrose was the predominant sugar in all nectars. The investigated tree species could therefore be considered in future city plantings.  相似文献   
56.
57.
This paper considers how shifts within the social sciences towards conceptualising spatiality in relational terms have unfolded in rural studies in particular ways over the past decade or so. A period in which networks, connections, flows and mobility have all established themselves as compelling conceptual frames for research, the rural has increasingly been recast in relational terms as a multi-authored and multi-faceted space, constituted through local-global interconnections and their place specific, sometimes contested, manifestations. In this way, the multiple meanings of the rural continues to be a focus of critical concern, as are the implications ‘of’ and ‘in’ rural spaces for some of the major issues currently being faced by governments and citizens around the world; including climate change and food security. Apprehending the complexity of the rural in these terms, we argue, requires not only thinking space relationally, but at the same time being epistemologically relational or theoretically pluralist. That is, recognising the co-constituent production of rural space through material and discursive phenomenon, processes and practices, and thus the value of existing theoretical resources (social constructionism, political and economic materialism) in relation with the critical and rigorous appraisal of ‘new’ concepts and ideas to better comprehend rural space in its multidimensional complexity and particularity. To this end, we identify Cindi Katz's notion of ‘countertopography’ as a promising conceptual and methodological addition to the rural scholar's toolkit insofar as it attends to a politics of location and differentation in relation to global processes. We conclude our discussion by sketching out possible objects of countertopographical analysis for understanding ongoing processes of change in rural space(s).  相似文献   
58.
This paper offers a contribution to the call for research on the effectiveness of regulatory interventions governing management commentary disclosure. Specifically, we focus on the mandatory requirement concerning performance indicator disclosure introduced by the Modernisation Directive (2003/51/EC). In keeping with other regulators, the European legislator opted to implement a regulatory approach based on a rule with loose specifications. To understand the effects of this Directive, we have investigated the Italian context, in which neither the national legislator nor the standard setter have supported companies with detailed specifications or guidelines aimed at integrating the European provision. We have compared companies’ disclosure practices before and after the adoption of the Directive, investigating the number of disclosed indicators and also their modalities of presentation, as they are considered essential to guaranteeing the quality of this disclosure. Our results document that a mandatory intervention, even if based on loose specifications, is associated with an increase in disclosure practices. Nevertheless, such regulation does not seem able to guarantee high quality disclosure practices. In fact, before and after the regulation, companies primarily disclose common financial measures. Moreover, the usefulness of such disclosure is undermined by a limited compliance with the international guidelines concerning the modalities of presentation. These results reveal some weaknesses in the European approach to performance indicator regulation. In general, the EU legislator fails to explain the purpose and the objective of performance indicator disclosure and does not take into account the differences between financial and non-financial indicators. Furthermore, it does not provide firms with clear guidelines concerning the presentation modalities.  相似文献   
59.
The raccoon is often considered a synanthropic species; however, most urban research on this species has been restricted to urban parks or green spaces. Little is known about the persistence of synanthropic characteristics in the raccoon within the urban matrix. We examined density, den selection, home range size, habitat selection, and survival for adult raccoons (Procyon lotor) during summer (June?CAugust) and autumn (September?CNovember) in two residential neighborhoods, Linthicum located inland, and Riviera Beach on a peninsula in the Potomac river, in Southern Maryland. Den site selection varied by gender (P?=?0.0002) and study site (P?=?0.052), and study site interacted with gender (P?=?0.0063), with female raccoons denning preferentially on the ground and male raccoons in human structures in Riviera Beach while in Linthicum females denned preferentially in trees and males avoided human structures. Seasonal home range size was larger for males (P?<?0.0001) than females at both sites. Habitat selection varied at different hierarchical levels, and between gender, season and site. Intersite differences in habitat selection were apparent at the second order and third order scale. Aquatic and urban habitat was ranked high and woodland consistently lowest in second order scale at Riviera Beach while urban habitat was consistently ranked lowest at Linthicum where woodland ranked highest. Between the hierarchal scales (2nd and 3rd order) a difference in habitat selection occurred at Linthicum only where urban habitats ranked lowest at 3rd order. The differences in patterns of habitat selection we observed between two urban sites at different hierarchical scales suggest that resource selection is dependent upon the specific characteristics of the site and that raccoons exhibit variable responses to changes in landscape features. Finally, male survival tended to be lower (P?=?0.079) than female survival in both study sites. Our results reveal that raccoons can continue to exhibit synanthropic characteristics within the urban matrix even in areas with little natural habitat. This ability to adjust to different levels of development allows the raccoon to occur throughout most parts of the urban landscape, which has important management implications for human-raccoon conflicts and disease management.  相似文献   
60.
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号