首页 | 本学科首页   官方微博 | 高级检索  
文章检索
  按 检索   检索词:      
出版年份:   被引次数:   他引次数: 提示:输入*表示无穷大
  收费全文   2110篇
  免费   517篇
各国政治   419篇
工人农民   67篇
世界政治   224篇
外交国际关系   96篇
法律   1053篇
中国政治   55篇
政治理论   676篇
综合类   37篇
  2024年   38篇
  2023年   150篇
  2022年   4篇
  2021年   62篇
  2020年   47篇
  2019年   162篇
  2018年   102篇
  2017年   144篇
  2016年   160篇
  2015年   141篇
  2014年   128篇
  2013年   583篇
  2012年   104篇
  2011年   111篇
  2010年   123篇
  2009年   60篇
  2008年   80篇
  2007年   45篇
  2006年   45篇
  2005年   30篇
  2004年   36篇
  2003年   21篇
  2002年   22篇
  2001年   10篇
  2000年   22篇
  1999年   15篇
  1998年   13篇
  1997年   15篇
  1996年   14篇
  1995年   12篇
  1994年   14篇
  1993年   14篇
  1992年   7篇
  1991年   10篇
  1990年   9篇
  1989年   5篇
  1988年   8篇
  1987年   4篇
  1986年   6篇
  1985年   5篇
  1984年   9篇
  1983年   7篇
  1982年   2篇
  1981年   6篇
  1980年   6篇
  1979年   4篇
  1978年   5篇
  1977年   4篇
  1976年   1篇
  1974年   2篇
排序方式: 共有2627条查询结果,搜索用时 15 毫秒
981.
Sexual delinquency in juveniles is insufficiently explored in regard to the specificity of offender characteristics. The aim is to investigate relevant areas for juvenile sexual offending in a precourt, pretreatment group. Thirty‐two alleged juvenile sexual offenders (ASO) referred to by police were compared with 32 juvenile nonsexual violent offenders (VNO) on standardized measures of aggressiveness and psychopathology, antisocial behavior, substance use problems, and sexuality. Less externalizing disorders and antisocial behavior were found among the ASOs than among the VNOs. The ASO group was sexually less experienced, had less trust in their relationship abilities, fewer victimization experiences, and reported more sexual deviance, while pornography use and obscene calls were reported less often. Few juvenile sexual offenders had severe problems in the investigated areas. Including groups of offenders before court, treatment or incarceration in research appears crucial to understand the full spectrum of sexual deviance in youth and avoid misguidance due to selection factors.  相似文献   
982.
Many researchers have been working in Spain to document the communal graves of those assassinated during the Spanish Civil War. This article shows the results obtained with two low‐cost photogrammetric techniques for the basic documentation of forensic studies. These low‐cost techniques are based on single‐image rectification and the correction of the original photo displacement due to the projection and perspective distortions introduced by the lens of the camera. The capability of image rectification is tested in an excavation in the village of Loma de Montija (Burgos, Spain). The results of both techniques are compared with the more accurate data obtained from a laser scanner system RIEGL LMS‐Z390i to evaluate the error in the lengths. The first technique uses a camera situated on a triangle‐shaped pole at a height of 5 m and the second positions the camera over the grave using a linearly actuated device. The first technique shows measurement errors less than 6%, whereas the second shows greater errors (between 8% and 14%) owing to the positioning of the carbon‐fiber cross on an uneven surface.  相似文献   
983.
The paper begins by establishing the context in which Japan's normal statehood will be based. The paper shows how difficult it is for Japan to attain the status of a normal state based on the country's political forces and the rising powers in the Asian region. The paper looks at the relationships between Japan and other nations like China and South Korea, which should be considered by Japan in order to attain normal statehood. These are countries that initially were under the control of Japan, especially in business and even militarily, but today they are assuming their own position in the world; an aspect that is considered a threat to Japan's smooth return to normalcy. The paper takes into consideration the models that Japan can adopt or adapt to attain the status of a normal state. The three models discussed are those of Britain, Germany, and France. The main aspect discussed under these models is autonomy; this is based on the fact that Japan can only attain the status of a normal state if it becomes autonomous.  相似文献   
984.
The role of cardiac inhibitory reflex as a potential cause of death is still a matter of debate. This study reports two cases of death under unusual circumstances. Case 1 corresponds to a man found hanging where the role of ligature compression of the carotid sinus became relevant as a possible explanation of death. In Case 2, the participation of a vasovagal syncope was clearly triggered by the laryngoscopic procedure. It is proposed that cardiac inhibitory reflex should be taken into account in those cases of unexpected death, which fulfills the following three criteria: (i) The investigation of the circumstances of the death is consistent with a hypothesis of cardiac arrest. (ii) A typical triggering peripheral stimulus is present. (iii) The performance of a complete autopsy cannot rule out the participation of a cardiac inhibitory reflex in the cause of death.  相似文献   
985.
Different national and international agencies have selected specific STR sets for forensic database use. To enhance database comparison across national and international borders, a 27‐locus multiplex system was developed comprising all 15 STR loci of the European standard set, the current 13 STR loci of the CODIS core, the proposed 22 STR loci of the expanded CODIS core, 4 additional commonly used STR loci, and the amelogenin locus. Development required iterative primer design to resolve primer‐related artifacts, amplicon sizing, and locus‐to‐locus balance issues. The 19.5‐min assay incorporated newly developed six‐dye chemistry analyzed using a novel microfluidic electrophoresis instrument capable of simultaneous detection and discrimination of 8 or more fluorescent dyes. The 27‐locus multiplex offers the potential for a new international STR standard permitting laboratories in any jurisdiction to use a single reaction to determine profiles for loci they typically generate plus an expanded common STR profiling set of global interest.  相似文献   
986.
Two deaths involving 3, 4‐methylenedioxypyrovalerone (MDPV) are reported. MDPV is a synthetic cathinone stimulant found in “bath salts” with neurological and cardiovascular toxicity. Biological specimens were analyzed for MDPV by GC/MS and LC/MS. A White man was found dead with signs of nausea and vomiting after repeatedly abusing bath salts during a weekend binge. Femoral venous blood and urine had MDPV concentrations of 39 ng/mL and 760 ng/mL. The second fatality was a White man with a history of drug and bath salt abuse found dead at a scene in total disarray after exhibiting fits of anger and psychotic behavior. Femoral venous blood and urine had MDPV concentrations of 130 ng/mL and 3800 ng/mL. The blood and urine MDPV concentrations are within the reported recreational concentration ranges (blood 24–241 ng/mL and urine 34–3900 ng/mL). Both decedents’ deaths were attributed to relevant natural causes in a setting of MDPV abuse.  相似文献   
987.
Abstract: In this case report, potential interferences from an improvised fire‐extinguishing agent, a dishwashing liquid, containing linear alkylbenzene sulfonates (LAS), was studied. The presence of linear alkylbenzenes (LABs) in the fire debris sample was identified from the summed ion profile (SIP) analysis. It was found that the LAS from dishwashing liquids produce LABs by thermal degradation. Direct pyrolysis of a LAS‐containing dishwashing liquid at 300°C yielded a distribution of LABs in the SIP. LABs began to break down at pyrolysis temperatures between 450 and 500°C and completely break down by 800°C. Observed pyrolysis breakdown products of LABs included toluene, ethylbenzene, meta‐, para‐, and ortho‐xylenes, propylbenzene, indane, naphthalene, and 1‐ and 2‐methylnaphthalenes. These data suggested the presence of LABs in fire debris evidence might complicate subsequent analysis because their breakdown products contained some of the target compounds common to ignitable liquid identification. Therefore, a positive determination of the presence of foreign ignitable liquids should be carefully evaluated when there is a presence of LABs in the SIP.  相似文献   
988.
The mandatory bid rule has its origins in the UK and now applies throughout the EU and in many other jurisdictions. Under a mandatory bid, an acquirer of a controlling stake in a listed company has to offer to the remaining shareholders a buy‐out of their minority stakes at a price equal to the consideration received by the incumbent controller. While the rule warrants that no value‐destroying control transfers take place, it is often criticised for preventing value‐increasing transactions. This paper challenges some of the claims made by critics of mandatory bids. Highlighting the effects of synergy gains in private sale‐of‐control transactions, it is shown that mandatory bids prevent inefficient control transfers, where minority shareholder protection rules provide inadequate protection. Furthermore, mandatory bids help facilitate transfers to the most efficient bidders in multi‐bidder settings. The mandatory bid is justifiable, on economic grounds, in wider circumstances than is commonly assumed by law and economics scholars.  相似文献   
989.
A book review on     
Walklate, S. (2001). Gender, Crime and Criminal Justice. Portland, OR: Willan Publishing. 201 pages.

Informers: Policing, Policy, Practice. Roger Billingsley, Teresa Nemitz, and Philip Bean (Ed.) William Publishing, Cullompton: Devon, UK, (2001) 179 pp. $59.95. ISBN 1–903240–07–7.  相似文献   

990.
While the U.S. struggled to quickly mobilize a coordinated national homeland security office after the September 11 attacks, the National Security Council (NSC) has been responsible for monitoring security in the Republic of China since the Nationalists moved to Taiwan in 1949. Although its primary mission has been to prevent Taiwan from being invaded by Mainland China, recent world events have awakened us to a need for security, a need that seemed to have faded away after the end of the Cold War. Although not a strong probability, Taiwan is still a possible target of terrorism because of its close relationship with the U.S. Thus, it is worthwhile to explore the role of NSC in antiterrorist efforts. The NSC plays a vital role in coordinating executive agencies in antiterrorism efforts. The NSC's antiterrorist measures cover the whole spectrum of the executive branch ranging from law enforcement to non‐law enforcement efforts. The tradition of collaboration among the military, police, and private security in Taiwan may help the NSC to smoothly coordinate these three parties.  相似文献   
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号