全文获取类型
收费全文 | 10127篇 |
免费 | 268篇 |
专业分类
各国政治 | 403篇 |
工人农民 | 441篇 |
世界政治 | 583篇 |
外交国际关系 | 302篇 |
法律 | 6988篇 |
中国政治 | 64篇 |
政治理论 | 1566篇 |
综合类 | 48篇 |
出版年
2020年 | 126篇 |
2019年 | 144篇 |
2018年 | 258篇 |
2017年 | 234篇 |
2016年 | 309篇 |
2015年 | 157篇 |
2014年 | 200篇 |
2013年 | 864篇 |
2012年 | 323篇 |
2011年 | 325篇 |
2010年 | 204篇 |
2009年 | 214篇 |
2008年 | 237篇 |
2007年 | 270篇 |
2006年 | 276篇 |
2005年 | 597篇 |
2004年 | 330篇 |
2003年 | 267篇 |
2002年 | 213篇 |
2001年 | 376篇 |
2000年 | 329篇 |
1999年 | 272篇 |
1998年 | 102篇 |
1997年 | 85篇 |
1996年 | 97篇 |
1995年 | 81篇 |
1994年 | 89篇 |
1993年 | 73篇 |
1992年 | 180篇 |
1991年 | 196篇 |
1990年 | 194篇 |
1989年 | 214篇 |
1988年 | 189篇 |
1987年 | 191篇 |
1986年 | 188篇 |
1985年 | 192篇 |
1984年 | 143篇 |
1983年 | 166篇 |
1982年 | 103篇 |
1981年 | 110篇 |
1980年 | 83篇 |
1979年 | 124篇 |
1978年 | 100篇 |
1977年 | 85篇 |
1975年 | 66篇 |
1974年 | 87篇 |
1973年 | 81篇 |
1972年 | 64篇 |
1971年 | 79篇 |
1970年 | 73篇 |
排序方式: 共有10000条查询结果,搜索用时 2 毫秒
1.
2.
3.
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
4.
Kenneth N. O. Ghartey 《Commonwealth Law Bulletin》2020,46(2):249-269
The scope of directors’ duties forms perhaps the most important part of corporate governance. This paper considers the trajectory of the regulation of directors’ duties under Ghanaian company law from the Companies Act, 1963 (Act 179) to the Companies Act, 2019 (Act 992). Using the 2017 to 2019 financial institutions’ insolvencies in Ghana as a backdrop, it considers whether the scope, formulation and structure of directors’ duties within the new legislation is capable of promoting corporately-beneficial director behaviour. It also discusses whether the framework is apt to deal with similar lapses in corporate governance marked by reckless and opportunistic director behaviour. It discovers that Act 992 places a greater reliance on specific rules while retaining the largely principles-based regulatory technique adopted for regulating director conduct under Act 179. The overall tenor of the framework of directors’ duties under the new Act points to a firmer legislative view of the serious consequences of reckless director conduct. The paper concludes that the language of the framework regulating director conduct is capable of promoting corporately beneficially director behaviour and is also apt to deal with the kind of lapses in corporate governance which led to mass financial sector insolvencies in Ghana. 相似文献
5.
John P. Crank 《Crime, Law and Social Change》2003,39(1):39-67
This concept paper presents a theory of environmental scarcity developed byHomer-Dixon. Homer-Dixon developed a model to describe the consequences of scarcity for sub-national violence in third world countries. This paper hasfour interrelated purposes. First, it presents the model of scarcity developedby Thomas Homer-Dixon in 1999. Second, it assesses the way in which the scarcity model contextualizes criminal justice and criminology research, andby extension, how research in crime and justice processes can broaden the scarcity model. Third, it applies elements of the model to the United States,a goal that represents a generalization of the model from third-world to first-world settings. Fourth, it presents a particular case, the migrationof African-Americans from the rural South to urban centers in the 1950s and1960s and consequent inner-city violence in the 1960s, that displays manyelements of the environmental scarcity model. 相似文献
6.
In 1991 the FCC implemented a price cap plan for local exchange carriers' interstate access service designed to deal with the regulatory boundaries problem arising from the breakup of AT&T in 1984. The experience with the price cap plan demonstrates the difficulty of predicting productivity growth accurately and makes clear that regulators cannot depend upon a pure price cap plan to keep prices within a reasonable range of costs. With periodic reviews to readjust plan parameters, however, a price cap plan can maintain the rate-of-return close to the target rate-of-return without diminishing the price cap plan's incentives for efficient production. A simple method of recalculating the X-factor based on the rate-of-return over the previous three years worked well in simulations. If this procedure had been used over the price cap period 1991 to 2000, prices would have been 20 percent lower and expenditures on LECs' telecommunications service subject to a price cap would have been $3.8 billion lower. 相似文献
7.
The adjustment problems associated with sexual abuse, physical abuse, psychological maltreatment, neglect, and witnessing family violence during childhood were examined in three studies. Study 1 demonstrated significant overlap between maltreatment types in parent reports (N = 50) of maltreatment experiences of their child aged 5–12 years. Parental sexual punitiveness, traditionality, family adaptability and family cohesion significantly predicted scores on 4 maltreatment scales and children's externalizing behavior problems. Level of maltreatment predicted internalizing, externalizing, and sexual behavior problems. In Study 2, significant overlap was found between adults' retrospective reports (N = 138) of all 5 types of maltreating behaviors. Parental sexual punitiveness, traditionality, family adaptability, and family cohesion during childhood predicted the level of maltreatment and current psychopathology. Although child maltreatment scores predicted psychopathology, childhood family variables were better predictors of adjustment. Study 3 demonstrated that child maltreatment scores predicted positive aspects of adult adaptive functioning (N = 95). 相似文献
8.
While the concepts of race and ethnicity have been abused historically, they are potentially invaluable in epidemiology and public health. Epidemiology relies upon variables that help differentiate populations by health status, thereby refining public health and health care policy, and offering insights for medical science. Race and ethnicity are powerful tools for doing this. The prerequisite for their responsible use is a society committed to reducing inequalities and inequities in health status. When this condition is met, it is irresponsible not to utilize these concepts. 相似文献
9.
VwGH ?sterreich 《Natur und Recht》2006,8(4):198-203
Keine Zusammenfassung 相似文献
10.