全文获取类型
收费全文 | 10393篇 |
免费 | 0篇 |
专业分类
管理学 | 1499篇 |
民族学 | 99篇 |
人口学 | 2408篇 |
理论方法论 | 481篇 |
综合类 | 286篇 |
社会学 | 4438篇 |
统计学 | 1182篇 |
出版年
2018年 | 1657篇 |
2017年 | 1650篇 |
2016年 | 1072篇 |
2015年 | 33篇 |
2014年 | 33篇 |
2013年 | 28篇 |
2012年 | 318篇 |
2011年 | 1144篇 |
2010年 | 1043篇 |
2009年 | 781篇 |
2008年 | 817篇 |
2007年 | 995篇 |
2005年 | 224篇 |
2004年 | 250篇 |
2003年 | 210篇 |
2002年 | 81篇 |
2001年 | 5篇 |
2000年 | 10篇 |
1999年 | 5篇 |
1996年 | 28篇 |
1988年 | 9篇 |
排序方式: 共有10000条查询结果,搜索用时 89 毫秒
71.
In the binary single constraint Knapsack Problem, denoted KP, we are given a knapsack of fixed capacity c and a set of n items. Each item j, j = 1,...,n, has an associated size or weight wj and a profit pj. The goal is to determine whether or not item j, j = 1,...,n, should be included in the knapsack. The objective is to maximize the total profit without exceeding the capacity c of the knapsack. In this paper, we study the sensitivity of the optimum of the KP to perturbations of either the profit or the weight of an item. We give approximate and exact interval limits for both cases
(profit and weight) and propose several polynomial time algorithms able to reach these interval limits. The performance of
the proposed algorithms are evaluated on a large number of problem instances. 相似文献
72.
Ohne Zusammenfassung 相似文献
73.
Astrid Schreyögg 《Organisationsberatung, Supervision, Coaching》2005,12(4):397-402
Dual Career Couples as a form of work-life-integrationThe author discusses the situation of dual career couples, when both are university graduates following an own career. Basing on a respective publication she delineates the current, mostly American research and reports on several German research projects, which endeavour to analyse the relation between gender and inequality in dual career couples. 相似文献
74.
Harald Pühl 《Organisationsberatung, Supervision, Coaching》2005,12(3):245-252
From supervision to mediation and vice versaMediation in organizations becomes more and more important because of increasing conflicts. The question is, which competencies of the counsellor are necessary, and above all, whether mediation is a particular method. The author explains the method of mediation and illustrates his concept of “patchwork-mediation”. This procedure allows to build a bridge between supervision and mediation. 相似文献
75.
Harald Pühl 《Organisationsberatung, Supervision, Coaching》2003,10(3):293-295
Ohne Zusammenfassung 相似文献
76.
77.
78.
Sandra Krapf 《Revue europeenne de demographie》2018,34(3):313-336
Most romantic relationships start with a living apart together (LAT) phase during which the partners live in two separate households. Over time, a couple might decide to move in together, to separate, or to remain together while maintaining their nonresidential status. This study investigates the competing risks that partners in a LAT relationship will experience the transition to coresidence or to separation. We consider the amount of time LAT partners have to travel to see each other to be a key determinant of relationship development. For our statistical analyses, we use seven waves of the German Family Panel Pairfam (2008/2009–2014/2015) and analyze couples in the age group 20–40 years. We distinguish between short-distance relationships (the partners have to travel less than one hour) and long-distance relationships (the partners have to travel one hour or more). Estimating a competing risks model, we find that couples in long-distance relationships are more likely to separate than those living in close proximity. By contrast, the probability of experiencing a transition to coresidence is lower for LAT couples in long-distance than for those in short-distance relationships. Interaction analyses reveal that distance seems to be irrelevant for the relationship development of couples with two nonemployed (unemployed, in education or other inactive) partners. 相似文献
79.
80.
Mariacristina Piva Massimiliano Tani Marco Vivarelli 《Journal of population economics》2018,31(4):1321-1338
We investigate whether labor mobility can be a distinct source of growth by studying the productivity impact of business visits (BVs), vis-à-vis that of other well-known drivers of productivity enhancement. Our analysis uses an unbalanced panel—covering on average 16 sectors per year in ten countries during the period 1998–2011—which combines unique and novel data on BVs sourced from the US National Business Travel Association with Organization for Economic Cooperation and Development (OECD) data on R&D and capital formation. We find that mobility through BVs is an effective mechanism to improve productivity, being about half that obtained by investing in R&D. This relevant finding invites viewing short-term mobility as a strategic mechanism and prospective policy tool to overcome productivity slowdowns and foster economic growth. 相似文献