全文获取类型
收费全文 | 66676篇 |
免费 | 2994篇 |
专业分类
各国政治 | 4455篇 |
工人农民 | 2827篇 |
世界政治 | 5890篇 |
外交国际关系 | 3774篇 |
法律 | 30543篇 |
中国共产党 | 9篇 |
中国政治 | 740篇 |
政治理论 | 20494篇 |
综合类 | 938篇 |
出版年
2023年 | 355篇 |
2021年 | 405篇 |
2020年 | 1152篇 |
2019年 | 1510篇 |
2018年 | 1630篇 |
2017年 | 1932篇 |
2016年 | 2144篇 |
2015年 | 1818篇 |
2014年 | 2090篇 |
2013年 | 10466篇 |
2012年 | 1544篇 |
2011年 | 1637篇 |
2010年 | 1778篇 |
2009年 | 2036篇 |
2008年 | 1682篇 |
2007年 | 1644篇 |
2006年 | 1814篇 |
2005年 | 1695篇 |
2004年 | 1600篇 |
2003年 | 1398篇 |
2002年 | 1455篇 |
2001年 | 1454篇 |
2000年 | 1269篇 |
1999年 | 1147篇 |
1998年 | 1078篇 |
1997年 | 955篇 |
1996年 | 939篇 |
1995年 | 901篇 |
1994年 | 902篇 |
1993年 | 929篇 |
1992年 | 932篇 |
1991年 | 942篇 |
1990年 | 918篇 |
1989年 | 954篇 |
1988年 | 960篇 |
1987年 | 968篇 |
1986年 | 921篇 |
1985年 | 1009篇 |
1984年 | 891篇 |
1983年 | 937篇 |
1982年 | 880篇 |
1981年 | 827篇 |
1980年 | 640篇 |
1979年 | 656篇 |
1978年 | 567篇 |
1977年 | 508篇 |
1976年 | 474篇 |
1975年 | 387篇 |
1974年 | 397篇 |
1973年 | 407篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
81.
The individuality of fibres used to provide forensic evidence--not all blue polyesters are the same.
Fibres used in forensic casework suffer from a disadvantage common to other forms of trace evidence--it is not possible to state with absolute certainty that they originate from a specific source. Target fibre studies, population studies and research on 'blocks of colour' have effectively demonstrated the polymorphism of textile fibres (particularly man-made ones) and have shown that when a fibre is believed to have a specific putative source, the chance that it has originated from a different source purely by coincidence is extremely remote. A study by Houck MM (Houck MM, Inter-comparison of unrelated fibre evidence. Forensic Science International 2003; 135: 146-149) has shown that no coincidental matching fibres were recovered from items of clothing examined in 20 unrelated crimes. The study involved over two million comparisons. This work goes a step further, and using the example of blue polyester fibres shows that even within a very narrow segment of the whole general fibre population, many examples of a specific colour/type of man-made fibre taken from random sources can be compared and the chance of any two being the same is very low. These studies should help to show the specificity and value of transferred fibres in providing forensic evidence. 相似文献
82.
83.
Theodore M. Brown 《The Journal of law, medicine & ethics》1987,15(3):156-159
Book Reviews in This Article:
Robert Jay Lifton, The Nazi Doctors: Medical Killing and the Psychology of Genocide.
Eric Stovcr and Elena O. Nightingak, eds., The Breaking of Bodies and Minds: Torture, Psychiatric Abuse and the Health Professions.
Elliot S. Valenstein, Great and Desperate Cures: The Rise and Decline of Psychosurgery and Other Related Treatments for Mental Illness. 相似文献
Robert Jay Lifton, The Nazi Doctors: Medical Killing and the Psychology of Genocide.
Eric Stovcr and Elena O. Nightingak, eds., The Breaking of Bodies and Minds: Torture, Psychiatric Abuse and the Health Professions.
Elliot S. Valenstein, Great and Desperate Cures: The Rise and Decline of Psychosurgery and Other Related Treatments for Mental Illness. 相似文献
84.
85.
THAD E. HALL 《Legislative Studies Quarterly》2002,27(1):107-122
Abstract This study examines changes in legislative support for the governor's legislative agenda in Georgia during the governor's first term in office (1991–94). I analyze the factors that led legislators to support the governor's agenda, as well as how the level of support changed between election years and off‐years. I use multivariate OLS models of gubernatorial support to determine how support varied (1) between the parties, (2) between factions within parties, and (3) over time. I find that there was wide variation in support among factions in the majority party and that support varied widely between election years and off‐years. 相似文献
86.
87.
Julia M. Whealin Stephenie Davies Anne E. Shaffer Joan L. Jackson Leslie C. Love 《Journal of family violence》2002,17(2):151-165
Unwanted sexual attention (UWSA) encompasses unsolicited verbal comments, gestures, stares, and other noncontact behaviors made regarding one's sexuality and physical appearance. The present study examined the correlates and impact of such UWSA perpetrated toward girls by family members. The first objective of the study was to explore whether family climate is associated with intrafamilial UWSA. This included looking at three types of dysfunctional parenting styles (unaffectionate, unavailable, and patriarchal) as well as exploring the co-occurrence of UWSA by adult and child relatives. The second objective was to then measure the impact of such intrafamilial UWSA on childhood emotional health, after controlling for parenting style and the experience of more traditional forms of child sexual abuse (CSA). Of the 296 university women (mean age = 19) who participated in the study, 70% (N = 206) reported UWSA from a family member prior to age 18. Whereas each dysfunctional parenting style was related to presence of UWSA, a simultaneous multiple regression analysis indicated that two of the parenting styles, patriarchal and parental unavailability, also predicted frequency of nonphysical UWSA within the family. Presence of UWSA from a child relative was significantly correlated with presence of UWSA from an adult relative. Additionally, a hierarchical multiple regression, entering the three parenting styles simultaneously in the first step, childhood sexual abuse in the second step, and familial UWSA in the last step, indicated that the frequency of UWSA by family members significantly predicted poorer childhood mental health when controlling for the other variables. Overall, results indicate that while the specific parenting styles which co-occur with UWSA may be detrimental in their own right, the impact of UWSA on girls appears to be above and beyond that of either parenting styles or CSA. Clinical implications are discussed. 相似文献
88.
89.
Thinking About AIDS and Stigma: A Psychologist's Perspective 总被引:5,自引:0,他引:5
Gregory M. Herek 《The Journal of law, medicine & ethics》2002,30(4):594-607
90.
Legal context: The relatively informal agreements setting up the TrilateralCooperation (TC) among the world's three most important patentoffices are contrasted with formal multinational treaties suchas the Patent Law Treaty and the abortive Substantive PatentLaw Treaty. Key points: After its inception in 1983, the TC concentrated initially ondeveloping and implementing standards for electronic storageand retrieval of prior art documents, and facilitation of searching.This was later extended to electronic sharing of priority documentsand to standardization and searching of DNA sequence databases.More recently emphasis has been placed on harmonization of searchingand examination procedures, and working groups have comparedthe approaches of the Trilateral Offices (TOs) to the patentabilityof claims in areas of new technology. Encouragingly, the resultsare usually the same, although the specific objections raisedmay differ. The ultimate goal is to reach a situation in whicha claim allowed by one TO would be accepted by the others withoutfurther examination. Practical significance: The TC has already facilitated search and examination, leadingto lower costs and shorter pendency times than would otherwisebe the case. Further progress depends on harmonization of substantivepatent law, which in turn depends on the willingness of theUSA to accept a first-to-file system. 相似文献