全文获取类型
收费全文 | 892篇 |
免费 | 21篇 |
专业分类
各国政治 | 70篇 |
工人农民 | 31篇 |
世界政治 | 80篇 |
外交国际关系 | 61篇 |
法律 | 369篇 |
中国政治 | 9篇 |
政治理论 | 288篇 |
综合类 | 5篇 |
出版年
2023年 | 5篇 |
2022年 | 3篇 |
2021年 | 4篇 |
2020年 | 6篇 |
2019年 | 24篇 |
2018年 | 21篇 |
2017年 | 25篇 |
2016年 | 28篇 |
2015年 | 16篇 |
2014年 | 22篇 |
2013年 | 173篇 |
2012年 | 21篇 |
2011年 | 22篇 |
2010年 | 23篇 |
2009年 | 27篇 |
2008年 | 33篇 |
2007年 | 19篇 |
2006年 | 29篇 |
2005年 | 26篇 |
2004年 | 33篇 |
2003年 | 31篇 |
2002年 | 25篇 |
2001年 | 24篇 |
2000年 | 17篇 |
1999年 | 21篇 |
1998年 | 17篇 |
1997年 | 16篇 |
1996年 | 13篇 |
1995年 | 15篇 |
1994年 | 13篇 |
1993年 | 18篇 |
1992年 | 11篇 |
1991年 | 10篇 |
1990年 | 9篇 |
1989年 | 13篇 |
1988年 | 12篇 |
1987年 | 11篇 |
1986年 | 9篇 |
1985年 | 9篇 |
1984年 | 10篇 |
1983年 | 6篇 |
1982年 | 5篇 |
1981年 | 6篇 |
1979年 | 3篇 |
1978年 | 5篇 |
1976年 | 2篇 |
1975年 | 3篇 |
1974年 | 2篇 |
1972年 | 3篇 |
1969年 | 4篇 |
排序方式: 共有913条查询结果,搜索用时 15 毫秒
871.
Robert Philip WEBER 《European Journal of Political Research》1987,15(2):145-153
Abstract. This paper delineates three kinds or senses of the cycle concept as used in social science theory and research. Cycles of the weak or first kind merely refer to fluctuations or state changes. Cycles of the moderate or second kind refer to fluctuations with some constant periodicity in fact or in principle. Cycles of the strong or third kind have several analytical properties that require explanation. I argue that the term cycle should be reserved for cycles of the second or third kinds and that the terms fluctuation or alternation should be used for cycles of the first kind. The paper concludes with some comments on sources of resistance to the cycle concept. 相似文献
872.
Defensive Gun Uses: New Evidence from a National Survey 总被引:1,自引:0,他引:1
The number of civilian defensive gun uses (DGUs) against criminal attackers is regularly invoked in public policy debates as a benefit of widespread private ownership of firearms. Yet there is considerable uncertainty for the prevalence of civilian DGUs, with estimates ranging from 108,000 (using the National Crime Victimization Survey) to 2.5 million (using smaller telephone surveys) per year. In this paper we analyze the results of a new national random-digit-dial telephone survey to estimate the prevalence of DGU and then discuss the plausibility of the results in light of other well-known facts and possible sources of bias in survey data for sensitive behaviors. Because DGU is a relatively rare event by any measure, a small proportion of respondents who falsely report a gun use can produce substantial overestimates of the prevalence of DGU, even if every true defensive gun user conceals his or her use. We find that estimates from this new survey are apparently subject to a large positive bias, which calls into question the accuracy of DGU estimates based on data from general-population surveys. Our analysis also suggests that available survey data are not able to determine whether reported DGU incidents, even if true, add to or detract from public health and safety. 相似文献
873.
Flynn K Maynard P du Pasquier E Lennard C Stoilovic M Roux C 《Journal of forensic sciences》2004,49(4):707-715
The performance of two spray reagents, iodine-benzoflavone and ruthenium tetroxide (RTX), was evaluated and compared with the conventional technique currently used at the crime scene, that is, powdering. Neither the spray techniques nor powdering were shown to be suitable for all surfaces and ages of marks tested. On some surfaces such as glass and treated wood, powdering was still the superior technique, whereas the spray techniques produced better development on wallpaper, vinyl, and brick. Sequencing work showed that RTX was incompatible with powdering and cyanoacrylate (with a rhodamine 6G stain). Iodine-benzoflavone can be used successfully either before or after powdering in a sequence; however, it was incompatible with cyanoacrylate. Two non-CFC formulations of iodine-benzoflavone using HFC4310mee and HFE7100 solvents were tested and shown not to be as effective as the original Arklone (CFC-113) formulation; however, the HFC4310mee solvent is recommended as the most suitable replacement solvent. Due to the expense of the commercial RTX spray, attempts at formulating a more cost-effective version were also carried out. A formulation was developed that gave comparable development to the commercial version but at a much cheaper cost, and with a shelf life of up to two months. Recommendations are presented for which techniques are suitable for different surfaces and ages of marks. Powdering was shown to be the best technique on all ages of marks tested on treated wood, glass, and also on marks aged three days and older on paint. Iodine-benzoflavone was the best technique on wallpaper, vinyl, brick, and raw wood. RTX was the best detection technique for fresh marks and marks aged up to one day on wallpaper and paint. 相似文献
874.
There are many ways to map and measure the links and spaces between the citizen and government. With the new models of governance available—where the government directs and the private sector along with a range of other actors implements—there are a whole number of questions that can be both examined in a qualitative manner but also may be examined in a quantitative manner. This paper looks at one quantitative approach (WAES—Website Attribute Evaluation System) and posit that it may be possible to develop from this further techniques—the development of e‐metrics—which will aid qualitative study of the citizenship and governance in the world of e‐government (E‐Gov). 相似文献
875.
The Maxcan fibre finder system is a product of Cox Analytical Systems, Sweden, and has been developed for the primary purpose of searching for fibres on tape lifts. This paper evaluates the ability of the Maxcan system to search for different fibre types and colours under varying conditions. The system performed effectively in most situations, although it did have problems with some search combinations that a human operator would also find difficult in a manual search. The Maxcan system has the added advantages of being objective, consistent and able to do large batch searches unattended. These attributes make it very useful where a large number of tapes need to be searched in casework and also in research where large quantities of data need to be gathered within a reasonable time. 相似文献
876.
This study provides an overview of the first systematic research on triad-related homicide in a Chinese society. In the 10-year period from 1989 to 1998, 11.9% of all homicides or a total of 95 triad-related homicides were extracted from the Hong Kong Homicide Monitoring Database. These events resulted in 124 victims (13.2 percent of all victims) and involved 526 known offenders. Triad homicides were classified into various types based on different combinations of circumstances, motivation, and outcomes including unintended outcomes. 相似文献
877.
It is a reliable though unexplained feature of national surveys that include items on gun ownership that wives are less likely
to report a gun in the home than husbands. In this article we extend the inquiry regarding this gender gap in reporting of
household guns to include adolescent children (age 12–17 years). The California Health Interview Survey of 2001, the largest-ever
state survey of its kind, includes over 4000 marital households in which both a parent and adolescent child were interviewed
and asked whether there was a gun in the home. There is little “age gap” in reporting—California teens are almost as likely
to say that there is a gun as are their parents—but there is a gender gap among both the teens and their parents. We also
find a large gap in personal experience with guns—boys are three times as likely to report hunting or shooting with a family
member than girls. This difference in experience fully accounts for the gender gap in reporting. The relevance of these findings
for the interpretation of survey data is clear. Whether there is a gun reported in a home depends to a remarkable extent on
which member of the household is asked the question. Hence, the method of selection of respondent(s) from within a household
will affect estimates of the patterns and prevalence of gun ownership, and, potentially, the accuracy of case–control studies
that use self-report information about guns in the home.
相似文献
Philip J. CookEmail: |
878.
879.
The various special procedures so far set up by the Commissionon Human Rights (CHR) to investigate serious violations of humanrights are very different from what can be achieved by a commissionof inquiry. There is almost no comparison in terms of the scaleof resources, the expertise mobilized, the amount of detailcontained in the Commission's Report, the precision and weightof the legal analysis, and the consequent power of the finalproduct to galvanize both public opinion and inter-governmentalaction. The Darfur Commission may also serve to expand the bridgebeing built between the Commission of Human Rights and the SecurityCouncil (SC). The practice of appointing commissions of inquiryhas immense potential in that it can provide the type of specialistinput necessary if the human rights machinery and the SC areto form part of a continuum. Commissions of inquiry reportsmay contribute to promoting transparency and accountabilityin the work of the SC, since the Council, when determining whetheror not to take action in a human rights situation, has to respondto a carefully documented and a well argued analytical report.Finally, the establishment of such commissions to evaluate whetheror not a situation warrants referral to the ICC provides anappropriate filtering mechanism before the Council takes a decision. 相似文献
880.
Research in political science is often concerned with modelingdependent variables that are proportions. Proportions are relevantin a wide variety of substantive areas, including elections,the bureaucracy, and interest groups. Yet because most researchersrely upon an approach, OLS, that does not recognize key aspectsof proportions, the conclusions we reach from normal modelsmay not provide the best understanding of phenomena of interestin these areas. In this paper, I use Monte Carlo simulationsto show that maximum likelihood estimation of these data usingthe beta distribution may provide more accurate and more preciseresults. I then present empirical analyses illustrating someof these differences. 相似文献