全文获取类型
收费全文 | 980篇 |
免费 | 40篇 |
专业分类
管理学 | 146篇 |
民族学 | 7篇 |
人口学 | 57篇 |
丛书文集 | 2篇 |
理论方法论 | 122篇 |
综合类 | 6篇 |
社会学 | 560篇 |
统计学 | 120篇 |
出版年
2023年 | 9篇 |
2022年 | 5篇 |
2021年 | 8篇 |
2020年 | 25篇 |
2019年 | 34篇 |
2018年 | 30篇 |
2017年 | 46篇 |
2016年 | 23篇 |
2015年 | 26篇 |
2014年 | 33篇 |
2013年 | 149篇 |
2012年 | 49篇 |
2011年 | 46篇 |
2010年 | 38篇 |
2009年 | 25篇 |
2008年 | 43篇 |
2007年 | 44篇 |
2006年 | 31篇 |
2005年 | 34篇 |
2004年 | 25篇 |
2003年 | 38篇 |
2002年 | 22篇 |
2001年 | 19篇 |
2000年 | 17篇 |
1999年 | 14篇 |
1998年 | 13篇 |
1997年 | 9篇 |
1996年 | 9篇 |
1995年 | 9篇 |
1994年 | 12篇 |
1993年 | 7篇 |
1992年 | 12篇 |
1991年 | 10篇 |
1990年 | 14篇 |
1989年 | 7篇 |
1988年 | 7篇 |
1987年 | 9篇 |
1986年 | 5篇 |
1985年 | 7篇 |
1984年 | 8篇 |
1983年 | 9篇 |
1982年 | 2篇 |
1981年 | 4篇 |
1980年 | 8篇 |
1979年 | 7篇 |
1978年 | 2篇 |
1977年 | 4篇 |
1976年 | 4篇 |
1975年 | 4篇 |
1968年 | 1篇 |
排序方式: 共有1020条查询结果,搜索用时 15 毫秒
81.
Infants follow the gaze of an individual with whom they are directly interacting by the end of the first year. By 18 months infants are capable of learning novel words in observational (or third‐party) contexts (Floor & Akhtar, 2006). To examine third‐party gaze following in 12‐ and 18‐month‐olds, the parent and experimenter engaged in a conversation while the infant was present. For 8 trials approximately every 30 sec the experimenter would turn her head to the right or left to fixate on a toy placed on either side of the room with the parent following suit. In the first experiment, the parent was seated next to the infant and the experimenter opposite, whereas in the second experiment the positions of the adults were switched. In Experiment 1, 18‐month‐olds but not 12‐month‐olds followed gaze. In Experiment 2, 12‐month‐olds acquired a tendency to follow gaze during the experimental session. These results suggest that an incipient ability to follow third‐party gaze is present by 12 months and that infants acquire a more reliable and general ability to follow the gaze of noninteractive others between 12 and 18 months. 相似文献
82.
Every adult can eliminate the risk of losing control of personal health decisions and financial resources by having a last will and testament, health proxy, power of attorney, and living trust. Yet evidence suggests that less than a majority of adult Americans have these documents. We surveyed 900 adult Americans (25 plus years old) to determine what factors predict the possession of these risk-reducing documents. In total, 46% had a living will and testament, 32% a durable power of attorney, 30% a health proxy, and 18% a living trust. Events that prompt people with wealth to secure these documents, such as increasing age, getting married, having children, and experiencing a life-threatening event were the strongest predictors of having a will. These were also among the strongest predictors of having a health proxy, along with a personal history of being proactive, and a family history that fostered trust of attorneys. Affluence, age, and education were the strongest predictors of having a living trust, and the strongest correlate of having a durable power of attorney was having faced a life-threatening event, positive experiences with attorneys, and higher educational achievement. 相似文献
83.
Prof. Dr. Marc Steffen Rapp Dr. Philipp D. Schaller Prof. Dr. Michael Wolff 《Zeitschrift für Betriebswirtschaft》2012,82(10):1057-1087
The question whether stock-based management incentives encourage long-term oriented management decisions is the topic of a controversial public debate. Also, the existing academic literature provides no clear picture, mainly due to endogeneity problems. In this paper, we reexamine the issue in the context of the recent credit crises, which allows us to solve the endogeneity problem. In the empirical analysis we find that firms, which have awarded stock-based incentives to their executives prior or during the financial crises, face substantially lower cuts in investment spending. These firms also show higher levels of R&D investments during the financial crises. Overall, our results suggest that stock based long-term incentives promote long-term oriented management decisions. 相似文献
84.
85.
Stijn Van Puyvelde Ralf Caers Cind Du Bois Marc Jegers 《Nonprofit management & leadership》2013,24(1):63-85
Most principal–agent literature of nonprofit organizations has focused on the relationship between board members and managers. However, in addition to the role as an agent of the board, the manager also performs a role as principal with respect to the nonprofit employees. By using a discrete choice experiment, we identify the objectives of managers and employees in nonprofit organizations and assess the presence of agency problems in this relationship. Our sample consists of 76 headmasters, 161 teachers, and 39 administrative employees in 74 secondary nonprofit schools in Belgium. We find that the six objectives set out in the experiment play an important role for both headmasters and subordinate staff. However, the results also indicate that some of these objectives are significantly more important for the headmasters. In sum, our results suggest that agency theory and stewardship theory are not necessarily in conflict with each other but can be combined into a more general governance framework for nonprofit organizations. Consequently, we argue that incentive structures that incorporate different types of objectives can facilitate the recruitment and retention of employees in nonprofit organizations. 相似文献
86.
87.
Simple, closed form saddlepoint approximations for the distribution and density of the singly and doubly noncentral F distributions are presented. Their overwhelming accuracy is demonstrated numerically using a variety of parameter values. The approximations are shown to be uniform in the right tail and the associated limitating relative error is derived. Difficulties associated with some algorithms used for exact computation of the singly noncentral F are noted. 相似文献
88.
Sellers RM Caldwell CH Schmeelk-Cone KH Zimmerman MA 《Journal of health and social behavior》2003,44(3):302-317
This study examines the direct and indirect relationships among racial identity, racial discrimination, perceived stress, and psychological distress in a sample of 555 African American young adults. A prospective study design was used to assess the influence of two dimensions of racial identity attitudes (i.e., centrality and public regard) on other study variables to investigate the relationship between racial identity attitudes and psychological distress. The results show some evidence of a direct relationship between racial centrality and psychological distress, as well as evidence of indirect relationships for both centrality and public regard through the impact of racial discrimination and perceived stress. In addition, racial centrality was both a risk factor for experiencing discrimination and a protective factor in buffering the negative impact of discrimination on psychological distress. Results are discussed within the context of identifying multiple pathways to psychological well-being for African American young adults within the context of racial discrimination. 相似文献
89.
This article describes the development, implementation, and replication of a group-based parenting program for families affected by substance abuse. The Nurturing Program for Families in Substance Abuse Treatment and Recovery improves parenting, as measured on objective scales; enhances parents' satisfaction and competence, as measured by participant reports; and is based on principles demonstrated to be effective in reducing risk of both child abuse and neglect and substance abuse for both parents and children. 相似文献
90.
Marc S. Klein 《Accountability in research》2013,20(1):9-20
[Scientists] are neither Gods nor charlatans; they are merely experts, like every other expert on the political stage. They have, of course, their special area of expertise, the physical world, but their knowledge is no more immaculate than that of economists, health policy makers, police officers, legal advocates, weather forecasters, travel agents, car mechanics, or plumbers. The expertise that we need to deal with them is the well‐developed expertise of everyday life; it is what we use when we deal with plumbers and the rest. Plumbers are not perfect-far from it‐but society is not beset with anti‐plumbers because being anti-plumbing is not a choice available to us.1 相似文献