全文获取类型
收费全文 | 1643篇 |
免费 | 37篇 |
专业分类
管理学 | 217篇 |
民族学 | 23篇 |
人口学 | 135篇 |
丛书文集 | 13篇 |
理论方法论 | 146篇 |
现状及发展 | 1篇 |
综合类 | 12篇 |
社会学 | 920篇 |
统计学 | 213篇 |
出版年
2023年 | 12篇 |
2022年 | 10篇 |
2021年 | 20篇 |
2020年 | 38篇 |
2019年 | 47篇 |
2018年 | 57篇 |
2017年 | 61篇 |
2016年 | 50篇 |
2015年 | 40篇 |
2014年 | 46篇 |
2013年 | 316篇 |
2012年 | 57篇 |
2011年 | 71篇 |
2010年 | 46篇 |
2009年 | 42篇 |
2008年 | 70篇 |
2007年 | 43篇 |
2006年 | 43篇 |
2005年 | 38篇 |
2004年 | 35篇 |
2003年 | 30篇 |
2002年 | 44篇 |
2001年 | 34篇 |
2000年 | 29篇 |
1999年 | 27篇 |
1998年 | 21篇 |
1997年 | 14篇 |
1996年 | 21篇 |
1995年 | 26篇 |
1994年 | 21篇 |
1993年 | 11篇 |
1992年 | 12篇 |
1991年 | 18篇 |
1990年 | 20篇 |
1989年 | 15篇 |
1988年 | 11篇 |
1987年 | 12篇 |
1986年 | 8篇 |
1985年 | 19篇 |
1984年 | 11篇 |
1983年 | 14篇 |
1982年 | 16篇 |
1981年 | 14篇 |
1980年 | 12篇 |
1979年 | 12篇 |
1978年 | 9篇 |
1976年 | 11篇 |
1975年 | 9篇 |
1974年 | 6篇 |
1972年 | 5篇 |
排序方式: 共有1680条查询结果,搜索用时 0 毫秒
381.
Walter Block Joseph Horton Ethan Shorter 《International Journal of Value-Based Management》1998,11(3):253-263
Rent control is a public policy which fails on both normative and positive economic grounds. In the former case, it violates
all canons of equity, of both right (private property rights are sacrosanct) and left (it does not promote egalitarianism,
rather, often, it enriches rich tenants and impoverishes poor landlords). In the latter, it leads to inefficiency, deterioration
of rental housing, reduces incentives for upkeep and maintenance, reduces labor mobility, exacerbates landlord tenant relations,
promotes housing abandonment and homelessness, and misallocates resources away from residential rental units. This sovietization
of housing has effects similar to the sovietization of anything else: farming, factories, industry, forestry, whatever.
This revised version was published online in August 2006 with corrections to the Cover Date. 相似文献
382.
Five-Hundred Life-Saving Interventions and Their Cost-Effectiveness 总被引:42,自引:0,他引:42
Tammy O. Tengs Miriam E. Adams Joseph S. Pliskin Dana Gelb Safran Joanna E. Siegel Milton C. Weinstein John D. Graham 《Risk analysis》1995,15(3):369-390
We gathered information on the cost-effectiveness of life-saving interventions in the United States from publicly available economic analyses. "Life-saving interventions" were defined as any behavioral and/or technological strategy that reduces the probability of premature death among a specified target population. We defined cost-effectiveness as the net resource costs of an intervention per year of life saved. To improve the comparability of cost-effectiveness ratios arrived at with diverse methods, we established fixed definitional goals and revised published estimates, when necessary and feasible, to meet these goals. The 587 interventions identified ranged from those that save more resources than they cost, to those costing more than 10 billion dollars per year of life saved. Overall, the median intervention costs $42,000 per life-year saved. The median medical intervention costs $19,000/life-year; injury reduction $48,000/life-year; and toxin control $2,800,000/life-year. Cost/life-year ratios and bibliographic references for more than 500 life-saving interventions are provided. 相似文献
383.
Joseph Hopper 《Qualitative sociology》1993,16(2):133-156
Using data gathered through participant observation and in-depth interviews, this article considers the phenomenon of non-mutual divorce in terms of the oppositional identities that divorcing partners establish through discourse. Divorcing partners describe feelings of mutual ambivalence prior to divorce, but they almost always transform themselves into dumpers (initiators/leavers) and dumped partners once their divorces begin. Most importantly, divorcing people establish these identities by invoking a cultural rhetoric of individualism on one side and a cultural rhetoric of commitment on the other. Although the two identities and their associated rhetorics are transitional, emerging only at the moment when one partner declares I want out and subsiding once the divorce is accomplished, they are significant means by which divorcing partners resolve ambivalence, account for their divorces, and impose a general sense of order onto the dissolution process. 相似文献
384.
Mutual influence in human interaction refers to the tendency for persons to alter their verbal, vocal, and kinesic behaviors in response to the intensity, frequency or duration of those behaviors emitted by their partners. Numerous explanations of these processes have been put forward involving principles of approach-avoidance conflict, arousal, reward, and cognitive processes. These explanations are reviewed with special attention given to an arousal based theory, discrepancy-arousal. This theory holds that mutual influence is primarily the result of arousal changes due to the degree of discrepancy of partner's behavior from the receiver's expectation.The theory predicts that persons who differ in reaction to arousal should also differ in their response to a partner's immediacy. This hypothesis was tested on high and low sensation seekers under conditions of near and normal distances during an interview. Several different behavioral responses were coded, including eye gaze, posture and orientation, smiles and laughter, object- and body-focused gestures, vocalization, pauses, and latencies to respond. The hypothesized interaction did not materialize with a median split on sensation seeking. A measure of state-trait sensation seeking (STSS) was developed. The interaction between distance and a median split on the state-trait measure was significant for eye gaze and posture and orientation, with the high STSS subjects compensating less than the low STSS subjects. 相似文献
385.
From the earliest days of research on blockmodeling, one primary goal was to develop a method that would exploit the algebra of the social relations among individuals to describe the social structure of the group. This goal was reluctantly abandoned, however, because the presence of idiosyncratic relational ties in the data obscured the structure and no reliable method for identifying these ties existed. This paper presents such a method. We have found it useful to distinguish emotionally weak ties (Granovetter 1973), those with low intensity, from structurally weak ties, those that fail to conform to the pattern of ties that exist in and are reinforced by the social structure. The latter type of weak ties are the idiosyncratic ties that interfere with attempts to describe a social structure. This paper operationalizes the concept of structurally weak ties and presents an algebraic method for identifying them in sociometric data. This enables us to use the algebra of social relations to identify a blockmodel that describes the social structure of the group. 相似文献
386.
387.
388.
389.
390.
Observational epidemiological studies are increasingly used in pharmaceutical research to evaluate the safety and effectiveness of medicines. Such studies can complement findings from randomized clinical trials by involving larger and more generalizable patient populations by accruing greater durations of follow-up and by representing what happens more typically in the clinical setting. However, the interpretation of exposure effects in observational studies is almost always complicated by non-random exposure allocation, which can result in confounding and potentially lead to misleading conclusions. Confounding occurs when an extraneous factor, related to both the exposure and the outcome of interest, partly or entirely explains the relationship observed between the study exposure and the outcome. Although randomization can eliminate confounding by distributing all such extraneous factors equally across the levels of a given exposure, methods for dealing with confounding in observational studies include a careful choice of study design and the possible use of advanced analytical methods. The aim of this paper is to introduce some of the approaches that can be used to help minimize the impact of confounding in observational research to the reader working in the pharmaceutical industry. 相似文献