全文获取类型
收费全文 | 2378篇 |
免费 | 150篇 |
专业分类
各国政治 | 178篇 |
工人农民 | 127篇 |
世界政治 | 202篇 |
外交国际关系 | 158篇 |
法律 | 1009篇 |
中国政治 | 15篇 |
政治理论 | 796篇 |
综合类 | 43篇 |
出版年
2023年 | 18篇 |
2022年 | 21篇 |
2021年 | 25篇 |
2020年 | 71篇 |
2019年 | 80篇 |
2018年 | 86篇 |
2017年 | 123篇 |
2016年 | 107篇 |
2015年 | 81篇 |
2014年 | 77篇 |
2013年 | 336篇 |
2012年 | 95篇 |
2011年 | 88篇 |
2010年 | 82篇 |
2009年 | 84篇 |
2008年 | 105篇 |
2007年 | 84篇 |
2006年 | 77篇 |
2005年 | 74篇 |
2004年 | 70篇 |
2003年 | 60篇 |
2002年 | 66篇 |
2001年 | 49篇 |
2000年 | 37篇 |
1999年 | 41篇 |
1998年 | 39篇 |
1997年 | 26篇 |
1996年 | 28篇 |
1995年 | 32篇 |
1994年 | 24篇 |
1993年 | 18篇 |
1992年 | 21篇 |
1991年 | 29篇 |
1990年 | 20篇 |
1989年 | 26篇 |
1988年 | 19篇 |
1987年 | 17篇 |
1986年 | 25篇 |
1985年 | 20篇 |
1984年 | 18篇 |
1983年 | 9篇 |
1982年 | 17篇 |
1981年 | 10篇 |
1980年 | 20篇 |
1979年 | 12篇 |
1977年 | 9篇 |
1972年 | 5篇 |
1971年 | 5篇 |
1970年 | 5篇 |
1967年 | 5篇 |
排序方式: 共有2528条查询结果,搜索用时 171 毫秒
1.
In response to research demonstrating that irrelevant contextual information can bias forensic science analyses, authorities have increasingly urged laboratories to limit analysts' access to irrelevant and potentially biasing information (Dror and Cole (2010) [3]; National Academy of Sciences (2009) [18]; President's Council of Advisors on Science and Technology (2016) [22]; UK Forensic Science Regulator (2015) [26]). However, a great challenge in implementing this reform is determining which information is task-relevant and which is task-irrelevant. In the current study, we surveyed 183 forensic analysts to examine what they consider relevant versus irrelevant in their forensic analyses. Results revealed that analysts generally do not regard information regarding the suspect or victim as essential to their analytic tasks. However, there was significant variability among analysts within and between disciplines. Findings suggest that forensic science disciplines need to agree on what they regard as task-relevant before context management procedures can be properly implemented. The lack of consensus about what is relevant information not only leaves room for biasing information, but also reveals foundational gaps in what analysts consider crucial in forensic decision making. 相似文献
2.
Daniel Abrahams 《冲突、安全与发展》2019,19(4):323-345
ABSTRACTIncreasingly, a diverse set of policy communities, including those with defence, development and environmental mandates, frame climate change as a security threat. Most often this discursive formation labels climate change as a ‘threat multiplier’. This framing, however, is vague, linear and leaves many questions unanswered regarding how institutions can develop and implement policy that addresses the joint challenges of climate change, conflict and security. Utilising a mixed-methods approach, and grounding data collection in US policy communities, this article examines how policy actors and institutions integrate climate-security discourses into policy processes. The objective of this research is to provide direct insight into how the discourses and technical understandings of climate-security transition into policy priorities and implementation realities. This research identified three common approaches to climate-security: (1) A challenge of adaptation and resilience; (2) A potent political argument; and (3) An issue of limited importance and feasibility. These approaches, however, are inconsistent across sectors and within organisations, suggesting a lack of cohesion and considerable challenges in identifying and responding to climate change as a ‘threat multiplier’. 相似文献
3.
4.
5.
6.
Jean -Pierre Courbois 《Public Choice》1991,70(3):251-265
The existence of predatory behavior, when measured by the number of lawyers per capita and the crime rate, seems to have an impact on saving and investment behavior in U.S. households. Where the risk of redistribution are lowest, the incentives to save are higher and, a fortiriori, the willingness to invest in highly vulnerable financial instruments is enhanced. Either because of low saving rates or because of disintermediation, households in states where the risks of redistribution are greater avoid accumulating financial assets.Recent years have seen a considerable decline in the U.S. saving rate. There is also evidence of large differences in saving rates from one country to another, with U.S. households among the lowest savers. Yet not all of these variations have been explained satisfactorily in empirical studies based on conventional theory. Perhaps one explanation which has been inadequately studied is the reduced expected retirement time horizon whether it be due to objective conditions such as retirement age and life expectancy or to uncertainty. Some reasons for myopic planning horizons are macroeconomic instability (McCauley and Zimer, 1989), the possibility of nuclear war (Slemrod, 1982, 1986 and 1989); Henderschott and Peek, 1985 and 1987); and the fear of socio-political conflict (Stewart and Venieris, 1985). I have suggested and tested here yet another factor: the fear of future redistribution. Using differences in interest income across U.S. states, this paper shows that fear of redistribution does seem to have a large influence on saving behavior. 相似文献
7.
J. Daniel Khazzoom 《Journal of policy analysis and management》1991,10(3):434-454
The EPA implements its policy of exhaust emission control by setting standards specified in terms of grams of pollutants per mile traveled. As a result, the tax must first restrain the vehicle miles traveled (VMT) if it is to have an impact on emission at all. EPA's choice of miles traveled as the medium through which its policy of pollution control must run is unfortunate, because travel is an activity that people resist giving up. This is reflected in a low long-run price elasticity of travel demand. Consequently, it takes substantial increases in the gasoline tax to make an impact on long-run travel demand. Simulation results show that under an alternative policy option, where EPA's standards are specified in terms of grams of pollutant per gallon of fuel burned, the same long-run reduction in exhaust emissions achievable today can be achieved (at an even higher level of confidence) with less than one-tenth of the increase in gasoline price required under the existing policy regime. 相似文献
8.
Daniel Smilov 《Crime, Law and Social Change》2010,53(1):67-77
This article explores the reasons for the introduction of anticorruption agencies of a specific type in Eastern Europe. It
is argued that one of the important functions of these agencies—which are stronger on information gathering, coordination
and strategy rather than on investigation of concrete cases—is to give to the government some leverage over the anticorruption
discourse. Presenting the anticorruption commissions and agencies as (discourse-controlling) instruments gives an answer to
the troubling question why governing parties are at all interested in the introduction of such bodies. Apart from instrumentalization in political discourse, anticorruption
bodies in Eastern Europe have had other effects as well. As shown in the Baltic case, institutional engineering provides for
a brief window of opportunity during which political forces committed to integrity could gain the upper hand. The problem
in Eastern Europe, however, is not the lack of such windows of opportunities—it is more the lack of really committed political
forces capable of continuous and consistent anticorruption effort. 相似文献
9.
Daniel Lockwood 《American Journal of Criminal Justice》1991,15(2):134-152
This paper discusses empirical findings and theories about prison higher education and recidivism. The research designs of
available evaluations of prison higher education are discussed. Their results in regard to arrest and return to prison after
release are presented in tables and figures. Both opportunity theory and moral development theory have been used to justify
such prison programs as crime prevention measures. A critical examination of the actual findings of the evaluations carried
out up to now suggests that prison higher education may have had only a slight impact on recidivism. One could, therefore,
doubt the value of opportunity theory and moral development theory to justify prison higher education as a crime control measure.
However, the methods used in the evaluations of this program have been generally weak. Thus, there is a continuing need to
carry out well-designed research on this question. The findings of follow-up studies of prison higher education have significance
for issues of correctional education policy as well as criminological theory. 相似文献
10.
This article reports on the results of a telephone survey conducted with a random sample of households screened for eligibility to receive child support in the state of Colorado. Despite the recent enactment of ambitious child legislation at the state and federal levels, the accounts of 731 custodial parents reveal a massive level of unmet need, with child support problems being most extreme for those never married to the chilďs other parent. These mothers typically lack an order establishing a legal obligation to pay child support and have incomes that fall below the poverty level. Overall, women of Colorado with child support orders received only about half of the support they were due, and 73 per cent of all women due support reported that they had experienced problems in collecting support either currently or in the past. The average amount of back due child support owed to the 60 per cent of women in the sample who reported an arrearage was $12,000. Analysis revealed that payment behaviour tracked with the length of time since separation with payment patterns worsening over time and irregular visitation and/or the presence of problems around child access. Female obligors exhibited the same payment patterns as their male counterparts but were more apt to maintain visitation. The article documents the dramatic, negative economic consequences of irregular or missing child support payments for custodial parents, and discusses the additional legal and financial commitments needed to improve the situation. The efficacy of private child support transfers to achieve an adequate standard of living for all children is called into question. 相似文献