全文获取类型
收费全文 | 12726篇 |
免费 | 213篇 |
专业分类
管理学 | 1644篇 |
民族学 | 51篇 |
人才学 | 1篇 |
人口学 | 1096篇 |
丛书文集 | 78篇 |
教育普及 | 2篇 |
理论方法论 | 1170篇 |
综合类 | 337篇 |
社会学 | 6344篇 |
统计学 | 2216篇 |
出版年
2021年 | 67篇 |
2020年 | 189篇 |
2019年 | 221篇 |
2018年 | 244篇 |
2017年 | 365篇 |
2016年 | 282篇 |
2015年 | 229篇 |
2014年 | 253篇 |
2013年 | 2048篇 |
2012年 | 394篇 |
2011年 | 317篇 |
2010年 | 211篇 |
2009年 | 234篇 |
2008年 | 262篇 |
2007年 | 278篇 |
2006年 | 216篇 |
2005年 | 350篇 |
2004年 | 296篇 |
2003年 | 257篇 |
2002年 | 268篇 |
2001年 | 314篇 |
2000年 | 297篇 |
1999年 | 309篇 |
1998年 | 209篇 |
1997年 | 204篇 |
1996年 | 214篇 |
1995年 | 188篇 |
1994年 | 204篇 |
1993年 | 177篇 |
1992年 | 236篇 |
1991年 | 232篇 |
1990年 | 211篇 |
1989年 | 219篇 |
1988年 | 194篇 |
1987年 | 185篇 |
1986年 | 189篇 |
1985年 | 174篇 |
1984年 | 207篇 |
1983年 | 200篇 |
1982年 | 165篇 |
1981年 | 137篇 |
1980年 | 139篇 |
1979年 | 166篇 |
1978年 | 136篇 |
1977年 | 119篇 |
1976年 | 102篇 |
1975年 | 101篇 |
1974年 | 95篇 |
1973年 | 93篇 |
1971年 | 64篇 |
排序方式: 共有10000条查询结果,搜索用时 0 毫秒
81.
D. R. Cox 《Journal of the Royal Statistical Society. Series A, (Statistics in Society)》2003,166(2):241-246
Summary. Possible health hazards from mobile phones arise from the use of the phones themselves and via the base stations that relay signals. Except for an increase in traffic accidents induced by the use of mobile phones in cars the evidence for a health hazard is at most indirect, but it cannot be entirely dismissed; the phones have not been widely used for sufficiently long for direct epidemiological studies to have high sensitivity for detecting any induced incidence of cancer, for example. The background and evidence are briefly reviewed and the steps taken in the UK to make information widely available described. 相似文献
82.
Julia R. Irwin 《Infancy》2003,4(4):503-516
This study examined whether perceivers can detect infant distress in the visual and acoustic signals within the cry. Parent and nonparent perceivers rated distress in 3‐, 6‐, 8‐, and 12‐month‐old infants' cries that were manipulated to separate facial, vocal, and bodily action. Mean perceiver ratings differed for high‐ and low‐distress cries at each infant age on the basis of facial and vocal action, but not bodily movement. Perceivers rated the cry sound as more distressed and the cry face as less distressed with increasing infant age. Parents rated the cries as less distressed overall than did nonparents. The results suggest that information about distress is available for perceivers in the crying infant's face and voice. 相似文献
83.
Dwight R. Lee 《Journal of Labor Research》2003,24(3):437-446
Reverse mandated benefits is a government-mandated policy that requires employees to provide their employers with benefits
that workers would not provide otherwise. Of course, only those benefits would be mandated that are worth more to employers
than they cost, as determined by political authorities. My case for such a policy argues that it is at least as sensible as
policies mandating that employers provide benefits to their employees that would not be provided otherwise. 相似文献
84.
The work-welfare nexus is essential in all social policy regimes. The question is in what situations individuals should be entitled to social welfare benefits and in which situations they should be obliged to work. Social welfare law and administrative practices define mechanisms that separate the deserving poor from people able to work. This article analyses the functions and character of these "separation mechanisms" in Sweden during three periods in history: a) in rural society in the late 19th century; b) in industrial society during the successful years of the Swedish model from World War II until the late 1970s; and c) the present, including the period of welfare retrenchment and reconsideration since the early 1980s. The conclusion is that Swedish social policy has always been strongly work-oriented, but the specific form and content of the work ethic has varied under the influence of different ideologies and handled in different social policy institutions. Under specific conditions the work line has been either generous or restrictive and it has been based on structural attempts to improve the opportunities to work as well as on attempts to strongly pressure the individual to work. The work line of today is seen as an interesting attempt to combine an effort to create good work through improved work conditions and an effort to reinforce elements of work enforcement in the social insurance system. 相似文献
85.
W R Hewitt 《Journal of American college health : J of ACH》1992,40(6):288-289
The author reports on a study of the liquid nitrogen treatment of warts at the Rutgers University Student Health Center. He demonstrates that liquid nitrogen therapy is a safe, effective treatment method, appropriate for use by nurses and other primary providers in a college health setting. 相似文献
86.
87.
Peter R. Gross 《Work and stress》1994,8(1):68-74
Although empathy has been found to distinguish effective counsellors from less effective counsellors, human services professionals who continually experience negative emotional reactions to the feelings that clients express in counselling may be at risk of developing burnout. This study examined the hypothesis that emotional empathy rather than cognitive empathy is associated with burnout. The sample of human services professionals consisted of 71 Salvation Army Officers. Multiple regression was used to investigate whether the dimensions of empathy could predict three aspects of burnout: personal accomplishment, emotional exhaustion and depersonalization. The first regression analysis indicated that personal distress and empathic concern were significant predictor of personal accomplishment. The second analysis indicated that personal distress was a significant predictor of emotional exhaustion. The third indicated that empathic concern was a significant predictor of depersonalization. Although these results support the hypothesis, personal distress was negatively associated with personal accomplishment, whereas empathic concern was positively associated with personal accomplishment. The small size of the sample may have influenced the reliability of the findings. A multidimensional approach to the role of empathy in counselling may help human services professionals to manage their emotional reactions when they engage in counselling with distressed clients. 相似文献
88.
Since children, particularly daughters, are among the most important sources of help and support for older Americans, it has been suggested that women's increasing employment will affect filial relations. Empirical evidence on this issue is inconsistent, in part due to the use of nonprobability samples. Few studies have measured effects for men. We attempt to broaden the scope of this question beyond help to the frail elderly by asking whether employment affects filial relations in general. We examine effects of hours employed on telephone contact, visiting, feelings of closeness, filial attitudes, and assistance to biological parents, for an area probability sample of men and women over 40. There are no effects of employment for men or women on contact, closeness, or assistance. For the vast majority of this population sample, contact and assistance involve few hours per week, and thus do not seem to conflict with employment. 相似文献
89.
90.