全文获取类型
收费全文 | 1254篇 |
免费 | 75篇 |
专业分类
管理学 | 136篇 |
民族学 | 8篇 |
人口学 | 118篇 |
丛书文集 | 11篇 |
理论方法论 | 142篇 |
综合类 | 7篇 |
社会学 | 783篇 |
统计学 | 124篇 |
出版年
2023年 | 13篇 |
2022年 | 9篇 |
2021年 | 13篇 |
2020年 | 27篇 |
2019年 | 21篇 |
2018年 | 37篇 |
2017年 | 66篇 |
2016年 | 50篇 |
2015年 | 24篇 |
2014年 | 40篇 |
2013年 | 199篇 |
2012年 | 56篇 |
2011年 | 59篇 |
2010年 | 44篇 |
2009年 | 40篇 |
2008年 | 54篇 |
2007年 | 49篇 |
2006年 | 58篇 |
2005年 | 43篇 |
2004年 | 49篇 |
2003年 | 41篇 |
2002年 | 38篇 |
2001年 | 22篇 |
2000年 | 19篇 |
1999年 | 22篇 |
1998年 | 17篇 |
1997年 | 19篇 |
1996年 | 17篇 |
1995年 | 14篇 |
1994年 | 11篇 |
1993年 | 10篇 |
1992年 | 11篇 |
1991年 | 14篇 |
1990年 | 5篇 |
1989年 | 12篇 |
1988年 | 9篇 |
1987年 | 12篇 |
1986年 | 7篇 |
1985年 | 7篇 |
1984年 | 9篇 |
1983年 | 10篇 |
1982年 | 8篇 |
1980年 | 6篇 |
1979年 | 6篇 |
1977年 | 4篇 |
1976年 | 3篇 |
1975年 | 3篇 |
1974年 | 5篇 |
1970年 | 3篇 |
1969年 | 3篇 |
排序方式: 共有1329条查询结果,搜索用时 0 毫秒
161.
The Impact of Cell Phone Noncoverage Bias on Polling in the 2004 Presidential Election 总被引:3,自引:3,他引:0
Despite concerns that the accuracy of preelection telephonepolls would be harmed by the omission of voters who could bereached only by cell phone, most national polls performed wellin predicting President George W. Bushs reelection in2004, and state polls were generally accurate as well. The nationalexit poll conducted by the National Election Pool found that7 percent of Election Day voters had cell phone service butno land line; younger voters were far more likely to be cell-only:19 percent among those age 1824 and 20 percent amongthose age 2529. Within these two youngest age cohorts,cell-only voters were significantly more likely to be singleand childless. While cell-only voters were more supportive ofJohn Kerry than voters overall, they were similar to other voterswithin their own age cohort. Because of this, preelection telephonesurveys that weighted their data appropriately by age were notsignificantly biased by the absence of the cell-only voters. 相似文献
162.
163.
This article presents estimates of the sources and the extent of observation errors in different questionnaires and methods used to collect birth and death data in the 1961-63 multi-purpose sample survey of Morocco.The questionnaires used in the analysis of the three survey rounds were a list of household members (Rounds1 and 2) and a roll-call (Round3); retrospective death (Rounds1, 2, and 3) and birth (Round 3) queries; a date-of-birth tabulation (Round 2); and a household check-sheet to explain differences between Rounds 1 and 2. All available questionnaires for a given household were brought together and collated to provide several sources of information on births and deaths and a basis for assessing errors.From this analysis, the survey attempted to define the nature and to estimate the frequency of the errors which would have occurred if more restricted types of survey design had been used. Results, based on the period between Rounds 1 and 2, led to three major conclusions.First, if vital data had been collected with a single-round retrospective procedure, gross error (over enumeration plus underenumeration) would have been 17 percent for births and 36 percent for deaths. There is a net error of overenumeration of 3 percent for births (1.4 per1,000population) and 9 percent for deaths (2.3 per1,000population).Second, if two rounds were available to permit a combination of household composition follow-up and a retrospective mortality questionnaire, overenumeration would be almost entirely eliminated and underenumeration would be noticeably reduced. Third, most of the remaining errors of underestimation may be attributed to (1) an estimated number of infants born and deceased between two rounds and missed by all questionnaires, (2) matching failures caused by the absence of adults at Round 1, and (3) matching errors. 相似文献
164.
165.
In an effort to raise salaries in professional football, the National Football League Players Association (NFLPA) has demanded that NFL owners set aside 55 percent of gross revenues to fund a union wage scale. An alternative means of raising salaries, as evidenced by the relatively higher earnings in major league baseball and professional basketball, is through a free agent system wherein players are free to sell themselves in the open market. This paper examines the NFLPA’s claim that free agency will not work in the NFL because owners lack the financial incentive to win that would induce them to bid on free agents. 相似文献
166.
Calculations of attributable risks have attracted increasing interest recently. However, these efforts have been limited to mostly one agent, radiation, and no interactions with effects of other toxic agents have been taken into account. This paper outlines a generic approach to the calculation of attributable risks for an exposure to several toxic agents and interaction effects associated with them. In this calculation, the partition of interaction terms between the agents responsible is of particular importance. At present, there are no rules on how to assign equitable shares, so one methodology will be proposed and others discussed briefly. For one example of an assignment, the standard errors of the attributable risks are determined in terms of the uncertainties of the input parameters, thus setting the stage for a comparison of the different shares of responsibility. 相似文献
167.
Scott Cummings 《Sociological inquiry》1984,54(2):154-170
This article examines recent economic and political trends constraining the production of social science knowledge. Particular attention is given to the Reagan Administration's attempt to contract public sector programs and curtail financial support for social science research. Trends in the private economy, especially within the publishing industry, that affect the production of social science knowledge are also discussed. Over the past few years, the market for social science knowledge has seriously eroded. The erosion of this market is examined within the larger framework of a shift in public policy from legitimation to capital accumulation, a shift that has accompanied right-wing ascendancy in American politics. This shift has created political and economic incentives encouraging the social science community to align more closely with conservatives. 相似文献
168.
R. Scott Frey 《The Sociological quarterly》1983,24(1):59-74
A theoretical formulation is presented that represents an abstract and parsimonious conception of public policy adoption at the subnational level. The formulation consists of two components: the principle that social phenomena exist in contexts with which they are compatible, and several distinguishing attributes of subnational collectivities and public policies. Taken together, these statements lead to the conclusion: if there is a match between attributes of a policy and those of a collectivity, then the probability increases that the policy will be adopted by the collectivity. General hypotheses derived from the formulation appear generally consistent with findings of previous research. Specific hypotheses derived from the formulation regarding city adoption of War on Poverty and National Flood Insurance programs are tested with cross–sectional data for a sample of U.S. cities. Results of an ordinary least-squares regression analysis reveal support for derived hypotheses. It is concluded that the explanatory and predictive powers of the theoretical formulation are high. 相似文献
169.
Our research examines union election activity in the non-hospital health care industry over a 12-year period and shows that
unions in this industry consistently win a greater percentage of their elections than their counterparts in either the hospital
segment of the industry or other industries. Furthermore, the results indicate that several factors, primarily organizational
characteristics, significantly affect the union victory rate. 相似文献
170.