全文获取类型
收费全文 | 573篇 |
免费 | 15篇 |
专业分类
各国政治 | 46篇 |
工人农民 | 75篇 |
世界政治 | 35篇 |
外交国际关系 | 36篇 |
法律 | 258篇 |
中国政治 | 13篇 |
政治理论 | 124篇 |
综合类 | 1篇 |
出版年
2023年 | 4篇 |
2022年 | 3篇 |
2020年 | 14篇 |
2019年 | 15篇 |
2018年 | 17篇 |
2017年 | 24篇 |
2016年 | 27篇 |
2015年 | 19篇 |
2014年 | 25篇 |
2013年 | 115篇 |
2012年 | 24篇 |
2011年 | 21篇 |
2010年 | 14篇 |
2009年 | 16篇 |
2008年 | 17篇 |
2007年 | 14篇 |
2006年 | 16篇 |
2005年 | 13篇 |
2004年 | 13篇 |
2003年 | 12篇 |
2002年 | 13篇 |
2001年 | 11篇 |
2000年 | 12篇 |
1999年 | 6篇 |
1998年 | 12篇 |
1997年 | 7篇 |
1996年 | 8篇 |
1995年 | 12篇 |
1994年 | 2篇 |
1993年 | 5篇 |
1992年 | 7篇 |
1991年 | 6篇 |
1990年 | 3篇 |
1989年 | 6篇 |
1988年 | 3篇 |
1987年 | 4篇 |
1986年 | 8篇 |
1985年 | 2篇 |
1984年 | 5篇 |
1983年 | 4篇 |
1982年 | 4篇 |
1981年 | 2篇 |
1977年 | 3篇 |
1976年 | 4篇 |
1974年 | 2篇 |
1971年 | 1篇 |
1970年 | 1篇 |
1969年 | 1篇 |
1968年 | 4篇 |
1967年 | 1篇 |
排序方式: 共有588条查询结果,搜索用时 31 毫秒
551.
Sandra E. Rodriguez‐Cruz Ph.D. Kathryn A. Carson B.S. 《Journal of forensic sciences》2010,55(2):499-507
Abstract: The routine identification of controlled substances and adulterants during forensic chemistry analysis often involves the identification of counter ions or salt forms present in an exhibit. Here, the use of the compound meso‐octamethylcalix(4)pyrrole (C4P) during salt‐form identification analysis is presented. C4P is a commercially‐available, anion‐binding agent that can be reacted with a controlled substance or adulterant, resulting in the sequestration of anionic species, usually present as counter ions to the active ingredient. Formation of noncovalent complexes between the cyclic host C4P compound and anionic guests is investigated using electrospray ionization–mass spectrometry (ESI–MS). Complexes with chloride, bromide, iodide, nitrate, and acetate are readily observed and mass spectrometry analysis provides identification via molecular weight characterization. Chloride and bromide complexes are also characterized by the isotopic distribution of their molecular ions. Formation of host–guest complexes is not observed for sulfate and phosphate salts, presumably due to steric hindrance and energetically unfavorable conditions. 相似文献
552.
In this paper we use a size and industry matched sample of over 1,900 UK and US businesses for the period 2004–05 in the manufacturing
and business services sectors to analyse the relative “strength” of the university–industry ecosystems in which these firms
operate in the two economies. Our analysis shows that in both countries universities per se play a quantitatively smaller
role as a source of knowledge for business innovation than either the business sector itself or a variety of organisations
intermediating between the university and business sectors. Our analysis reveals a much more diffuse university–industry ecosystem
in the UK in which a higher proportion of businesses claim links external to themselves in their pursuit of knowledge for
innovation and a higher proportion report directly connecting with universities. US firms are more likely to access knowledge
through a combination of business and intermediary sources and are less likely to have established formal collaborative or
partnership agreements in the 3 years prior to the survey. We also find, however, that a higher proportion of US firms place
a very high value on the connections they have with universities and are much more likely to commit resources to support such
innovation related university interactions. A similar pattern of diffuse but weaker links characterise the supply of public
sector financial assistance for innovation in our sample firms. UK firms are more likely to be in receipt of assistance, but
receive far less per firm in absolute terms and relative to their R&D expenditures. It appears that the UK university–industry
ecosystem is characterised by a greater width than quality of interaction. 相似文献
553.
Martine B. Powell Carolyn H. Hughes‐Scholes Cristina Cavezza Mark A. Stoové 《Legal and Criminological Psychology》2010,15(2):243-260
Purpose. Three studies examined the degree to which investigative interviewers' adherence to best‐practice guidelines is consistent across similar mock interviews. Method. In each study, two interviews were administered within a period of several hours. Further, group and individual stability of interviewer performance was analysed, and performance was measured by calculating the proportion of open‐ended and leading questions as well as the presence of predetermined problem behaviours. The studies varied depending on the type of interview paradigm employed. Interviewer performance in Study 1was measured in a group context where participants rotated between the role of interviewer, child respondent, and observer. In Study 2, an adult played the role of a child recalling abuse but this occurred in isolation (participants did not observe others or play the child). Study 3 was similar to Study 2 except that in each interview an unfamiliar child aged 5–7 years recalled an innocuous event. Results. Interviewer performance was relatively stable across tasks, although the strength of the relationship between measures varied across analyses. Improvement in open‐ended question usage occurred in Study 1 but not Studies 2 and 3. Irrespective of the assessment context, the dichotomous rating scale yielded greater consistency than when questions were tallied. Further, group stability overestimated individual stability. The practical implications of these findings for trainers and researchers are discussed. 相似文献
554.
The impact of scientific findings on medical, psychological, and legal concepts has led to the adoption of laws and regulations that do not easily fit into the established legal categories of medical law or mental health law. Instead, this convergence of forces has resulted in laws and regulations mandating biopsychosocial treatment guidelines, where both medical and psychological cares are integrated within the framework of a single paradigm. Laws and regulations of this type have been adopted by a number of US states and Canadian provinces, and could be considered to represent a new category, for which we offer the term “biopsychosocial law.” Biopsychosocial laws currently pertain to medical treatment guidelines for workers’ compensation, a medical treatment system noted for high costs, high levels of litigation, and psychological involvement. There are a number of examples of biopsychosocial laws, but the most noteworthy are based on guidelines developed by the Colorado Division of Workers’ Compensation, the American College of Occupational and Environmental Medicine, the Work Loss Data Institute, and The Reed Group. These guidelines differ significantly with regard to features, conditions covered, and strength of evidence basis. However, all of these guideline systems were developed with the intent of providing good care while controlling costs, are evidence based, integrate the practice of medicine and psychology, and are legally mandated in certain jurisdictions. Taken together, these guidelines represent a growing convergence of scientific evidence, professional society positions, payor policies, and legal regulations. These forces are propelling a broad societal shift away from Cartesian assumptions that the body and mind are separate, and toward a biopsychosocial paradigm for the treatment of injury and illness. 相似文献
555.
Ellen M. Volpe Camille R. Quinn Kathryn Resch Valerie Douglas Catherine Cerulli 《Journal of family violence》2017,32(4):439-452
Many urban, low-income adolescents experience violence, often resulting in posttraumatic stress disorder (PTSD) and depression. Narrative Exposure Therapy (NET) facilitates therapeutic processing of traumatic memories. This purpose of this study is to examine the feasibility of NET among adolescents at-risk for PTSD and depression. Two community-based agencies hosted five focus groups with adolescents (n = 28), aged 18–21, predominantly African- American (71 %) and female (61 %) and one with adolescent service providers (n = 11). Pope’s coding framework (2000) and the Socio-Ecological Model for violence prevention (Krug et al. in The Lancet, 360(9339), 1083–1088, 2002) elicited perceived barriers and facilitators to NET. Individual, relationship, and community level barriers and facilitators to NET therapy engagement were identified. The findings indicate participants have favorable attitudes about NET and the provision of the therapy within trusted community agencies. The results will inform the next steps of NET implementation, training, and psychoeducation. 相似文献
556.
Racial identification from the midfacial skeleton with special reference to American Indians and whites 总被引:1,自引:0,他引:1
Successful approaches to race determination of unidentified human remains have been developed by anatomists and physical anthropologists, but few quantitative methods are available for distinguishing American Indian crania from those of whites. The leading method in use today is particularly ineffective in its placement of American Indian skulls from the western regions of the United States. Recent development and testing of a new metric method suggests a much more effective technique. The method involves six breadth and projection measurements of the midfacial skeleton, the calculation of three indices, and a simple direct reading of results. The method has the additional advantage of use in the autopsy room with minimal dissection of soft tissue required. Based upon a less extensive test of East Asian and Arctic Mongoloid crania, the method appears to be even more effective in separating them from the sharp featured whites. Larger samples of American blacks and Polynesians are presently under study and these also appear to separate quite readily from whites using the same or similar sectioning values. 相似文献
557.
558.
559.
John R. Lutzker Kathryn M. Bigelow Ronald M. Doctor Maria Lynn Kessler 《Journal of family violence》1998,13(2):163-185
This paper describes Project SafeCare, an ecobehavioral research and treatment project with families reported or at risk for child abuse or neglect. Preliminary demographic data are reviewed along with indirect assessment data. Four case studies are described to exemplify the effects of training provided to families. The implications for the current assessment data, treatment, and outcome are discussed. 相似文献
560.
Post-Release Substance Abuse Treatment for Criminal Offenders: A Cost-Effectiveness Analysis 总被引:1,自引:0,他引:1
Kathryn E. McCollister Michael T. French James A. Inciardi Clifford A. Butzin Steven S. Martin Robert M. Hooper 《Journal of Quantitative Criminology》2003,19(4):389-407
This study conducted a cost-effectiveness analysis of Delaware's CREST Outreach Center, a work release therapeutic community (TC) and aftercare program for criminal offenders. Treatment effectiveness was assessed using the number of days reincarcerated during an 18-month, post-release follow-up period. The 6-month CREST program cost $1937 for the average participant, and led to 30 fewer days incarcerated (29% less) than the average participant in a standard work release program. This implies that the CREST program reduced incarceration for criminal offenders at an average cost of $65 per day. The additional investment of $935 per client to provide aftercare services led to 49 fewer days incarcerated (43% less) than CREST work release-only participants. This suggests that by adding an aftercare component to the CREST work release program, a day of incarceration is avoided at an average cost of $19 per day. These findings have implications for future investments in post-release substance abuse treatment for criminal offenders. However, the results must be interpreted with caution given potential selection bias in the groups that participated in the CREST work release and aftercare programs. Selection bias and the policy implications of this research are noted and discussed. 相似文献