全文获取类型
收费全文 | 9184篇 |
免费 | 304篇 |
专业分类
各国政治 | 380篇 |
工人农民 | 387篇 |
世界政治 | 640篇 |
外交国际关系 | 301篇 |
法律 | 5891篇 |
中国共产党 | 1篇 |
中国政治 | 52篇 |
政治理论 | 1782篇 |
综合类 | 54篇 |
出版年
2020年 | 114篇 |
2019年 | 139篇 |
2018年 | 186篇 |
2017年 | 196篇 |
2016年 | 214篇 |
2015年 | 158篇 |
2014年 | 171篇 |
2013年 | 894篇 |
2012年 | 239篇 |
2011年 | 248篇 |
2010年 | 193篇 |
2009年 | 217篇 |
2008年 | 238篇 |
2007年 | 237篇 |
2006年 | 242篇 |
2005年 | 200篇 |
2004年 | 221篇 |
2003年 | 220篇 |
2002年 | 195篇 |
2001年 | 373篇 |
2000年 | 354篇 |
1999年 | 269篇 |
1998年 | 124篇 |
1997年 | 108篇 |
1996年 | 94篇 |
1995年 | 108篇 |
1994年 | 107篇 |
1993年 | 97篇 |
1992年 | 204篇 |
1991年 | 189篇 |
1990年 | 224篇 |
1989年 | 197篇 |
1988年 | 212篇 |
1987年 | 207篇 |
1986年 | 193篇 |
1985年 | 202篇 |
1984年 | 153篇 |
1983年 | 149篇 |
1982年 | 100篇 |
1981年 | 93篇 |
1980年 | 82篇 |
1979年 | 94篇 |
1978年 | 87篇 |
1976年 | 64篇 |
1975年 | 73篇 |
1974年 | 98篇 |
1973年 | 83篇 |
1972年 | 64篇 |
1970年 | 61篇 |
1969年 | 58篇 |
排序方式: 共有9488条查询结果,搜索用时 15 毫秒
921.
W F McCormick J H Stewart H Greene 《The American journal of forensic medicine and pathology》1991,12(2):175-181
Measurement of clavicular length and circumference, and computation of clavicular robustness and length-circumference product from 724 autopsied adults of known age, sex, and body length between the ages of 15 and 96 years produced useful sex-predictive values. This predominantly North American white population contained 560 males and 164 females with intact, nondeformed clavicles. Clavicle length and circumference and particularly their product have been found useful in sexing, but robustness as a single trait has not. Despite a significant overlap of male and female values, the use of single cutoff values allowed correct sex assignment of up to 93% of the entire study population, including 94% of males and 89% of females. The ratios of body length to clavicle circumference and to clavicle length are on average greater in women than in men. The former ratio yields male predictive values greater than 95% for those individuals with ratios falling below the cutoff value of 43, whereas the latter ratio is a relatively poor sex predictor. 相似文献
922.
Mainstream criminology still tends to focus on gender as a control variable, ignoring the different pathways to crime followed
by males and females. This leaves us with knowledge that we already have—males commit more criminal and delinquent acts than
do females, but little information about the similarities and differences between men and women who commit crimes. On the
other hand, feminist approaches tend to do one of two things: deal with girls and women only or deal with women and men separately
to illuminate the differences. In this paper, we examine articles in three major journals, Criminology, Justice Quarterly, and Journal of Research in Crime and Delinquency, to explore the ways that gender is treated in mainstream criminology journals. Then, we will discuss the implications this
has for feminist criminology. 相似文献
923.
924.
T. Speedy D. Baldwin G. Jowett M. Gallina A. Jehanli 《Forensic Science International Supplement Series》2007,170(2-3):117
The testing of oral fluid for drugs of abuse has increased significantly over recent years and is now commonplace in drug rehabilitation clinics, the workplace, prisons and custody suites. The global problem of identifying drugged drivers has also led to an increase in oral fluid testing at the roadside. The main requirements for the implementation of roadside drug testing are a rapid sample collection time, collection of a known sample volume and recovery of drugs from the collection device. We report here the development of the Cozart® DDS oral fluid collector, an oral fluid collector that combines rapid and adequate sample collection with satisfactory drug recovery. Oral fluid was collected from drug users (n = 134) and drug-free individuals (n = 137), using the Cozart® DDS oral fluid collector. The mean time for the completion of collection (full coloration of the sample presence indicator) was 34 s for drug-free individuals and 44 s for drug users. The average volume collected was 0.34 mL (n = 271). No chemical stimulant (to induce salivation) was used to achieve the collection times observed in either the drug-free or the drug-taking sample populations. Drugs were extracted from the collector using the Cozart® DDS buffer and drug recovery was determined by Cozart® enzyme immunoassays. The recovery studies showed that for amphetamine, Δ9THC, cocaine, methadone, methamphetamine, morphine and temazepam over 90% of the drug in the sample was eluted from the collector. The Cozart® DDS oral fluid collector provides a reliable mechanism for the collection of oral fluid at the roadside that achieves the rapid collection times required. 相似文献
925.
Björn Fägersten 《Intelligence & National Security》2013,28(4):500-520
Abstract This article analyses the gap between government ambitions and actual outcomes in the case of European counter terrorism intelligence cooperation. Specifically, it investigates why Europol has not managed to live up to its tasks despite outspoken government support. Drawing on rational choice institutionalism, the study suggests why bureaucrats might be motivated to resist calls for international cooperation. By examining the process by which Europol has developed as an actor in the counter terrorism field, this article shows how development in the field of intelligence cooperation is not exclusively the reflection of government preferences. It concludes by suggesting that scholars could gain greater insight from a less state centric approach to the study of intelligence. In addition, the article suggests that policy makers cultivate a greater familiarity with bureaucratic factors and that they continually work with those factors in mind. 相似文献
926.
J Ikebuchi S Kotoku M Yashiki T Kojima K Okada 《The American journal of forensic medicine and pathology》1986,7(2):146-150
A case of fatal poisoning due to the combined effect of alcohol and gasoline following an automobile accident is described. Toxicological analyses by means of gas chromatography and gas chromatography-mass spectrometry permitted the identification and quantitation of alcohol and several hydrocarbons in the heart blood and in the gas in the lung. Great variation was found in the estimates of blood gasoline concentration, depending on which of six constituents of gasoline was chosen for quantitation. The cause of this variation is discussed, together with the possible mechanisms leading to death. 相似文献
927.
J G Prichard P D Kossoris R A Leibovitch L D Robertson F W Lovell 《Journal of forensic sciences》1986,31(1):301-306
Bites of Trombiculid mites implicated a suspect during a homicide investigation. Clinical documentation of the bites, correlation with entomological studies, and submission of evidence at trial are reported. Insects that have a discrete geographic distribution and leave bites of a characteristic nature may have important forensic science implications. 相似文献
928.
L F Sparr M E Reaves R M Atkinson 《The Bulletin of the American Academy of Psychiatry and the Law》1987,15(2):141-162
Although data are inconclusive, popular perception has linked military combat, posttraumatic stress disorder (PTSD), and criminal behavior. This paper discusses the multifactorial elements of this association that include both conscious and unconscious parameters of psychologic functioning. Testimony on combat-related PTSD has been presented in the courtroom to support veterans' claims of not guilty by reason of insanity (NGRI) and diminished capacity and for consideration during judicial sentencing. Because there is a known connection between the degree of combat involvement and PTSD, verification through collateral sources of the veteran's report of combat experiences is an important component of forensic assessment. The DSM-III-defined diagnosis of PTSD and the presence of a dissociative state have particular relevance in NGRI determinations. In other aspects of the judicial process demonstration of the absolute presence or absence of PTSD is often irrelevant and should be replaced by efforts to establish plausible links between provable combat experiences and the circumstances of the crime. 相似文献
929.
Recent years have witnessed growing research interest in citizen perceptions of the police. This was likely the result of the community policing movement, which sought to strengthen ties between citizens and the police, as well as to concerns about the legitimacy of the police. Most of this research focused on police agencies in the United States, and little research had been conducted on citizen perceptions of the police in Asian countries. This study sought to fill this void through an analysis of citizen perceptions of the police in South Korea. To address these issues, telephone interview survey data gathered from 11,500 randomly selected citizens were obtained in the rapidly industrializing country, South Korea. Several sets of multiple-regression models were estimated to assess the effect of urbanization, demographics, evaluations of police services, and perceived corruption on citizen satisfaction with police. The results suggested that citizens in small to mid-sized cities and large urban cities were less satisfied with police than were residents of rural areas. In addition, age, evaluations of police service, and perceptions of corruption were related to citizen satisfaction. The results were discussed in comparison to previous research in Asia and the United States and other Western countries. 相似文献
930.
Paul T. Christensen 《Communist and Post》1998,31(4):345-357
This article examines socioeconomic foundations of leftist politics in post-Soviet Russia. It is often argued that the reemergence of left politics is the result of contingent factors connected to transitional crises. While this is one source of strength for the left, there are two more important and enduring sources: a “socialist value culture” among a large majority of Russians, and an emerging pseudo-capitalist system that is creating “traditional” class-based and left-leaning attitudes and affiliations among particular social groups. The article examines the extent of this value culture and the emergence of these attitudes and affiliations through an analysis of statistical data and interviews conducted with Russian workers and intelligentsia figures from 1994–1997. 相似文献