全文获取类型
收费全文 | 679篇 |
免费 | 36篇 |
专业分类
各国政治 | 40篇 |
工人农民 | 79篇 |
世界政治 | 56篇 |
外交国际关系 | 28篇 |
法律 | 334篇 |
中国政治 | 7篇 |
政治理论 | 168篇 |
综合类 | 3篇 |
出版年
2023年 | 7篇 |
2022年 | 3篇 |
2021年 | 6篇 |
2020年 | 12篇 |
2019年 | 20篇 |
2018年 | 24篇 |
2017年 | 30篇 |
2016年 | 30篇 |
2015年 | 19篇 |
2014年 | 27篇 |
2013年 | 103篇 |
2012年 | 17篇 |
2011年 | 25篇 |
2010年 | 20篇 |
2009年 | 28篇 |
2008年 | 22篇 |
2007年 | 25篇 |
2006年 | 20篇 |
2005年 | 13篇 |
2004年 | 14篇 |
2003年 | 13篇 |
2002年 | 18篇 |
2001年 | 17篇 |
2000年 | 20篇 |
1999年 | 19篇 |
1998年 | 10篇 |
1997年 | 12篇 |
1996年 | 9篇 |
1995年 | 8篇 |
1994年 | 8篇 |
1993年 | 8篇 |
1992年 | 11篇 |
1991年 | 9篇 |
1990年 | 8篇 |
1989年 | 5篇 |
1988年 | 5篇 |
1987年 | 3篇 |
1986年 | 5篇 |
1985年 | 7篇 |
1984年 | 6篇 |
1983年 | 8篇 |
1982年 | 3篇 |
1981年 | 5篇 |
1980年 | 3篇 |
1979年 | 4篇 |
1978年 | 4篇 |
1977年 | 3篇 |
1976年 | 2篇 |
1975年 | 3篇 |
1968年 | 3篇 |
排序方式: 共有715条查询结果,搜索用时 15 毫秒
51.
52.
53.
54.
Church attendance,meaningfulness of religion,and depressive symptomatology among adolescents 总被引:1,自引:0,他引:1
Loyd S. Wright Christopher J. Frost Stephen J. Wisecarver 《Journal of youth and adolescence》1993,22(5):559-568
Self-administered questionnaires were completed by 451 adolescents at a public high school in Texas during the spring semester 1989. The instrument used contained the Beck Depression Inventory (BDI) and items to determine participants' gender, frequency of church attendance, and meaningfulness of one's religion. Based on social support research and the writings of Carl Jung and Viktor Frankl, it was predicted that those who attended church frequently and those who viewed their religions as providing meaning for their lives would have lower BDI scores than their classmates. The findings supported these predictions. Implications and a discussion of the results are included.Received Ed.D. in educational psychology from University of Illinois. Main research interests are substance abuse in adolescents, drug use prevention strategies, and suicidal ideation in adolescents.Received Ph.D. in general psychology from Boston University. Main research interest is psychology in interdisciplinary perspective, with a specialization in the psychology of religion.Pursuing a M.Ed, in school psychology at Southwest Texas State University. Main research interests are psychological testing and assessment. 相似文献
55.
Matthew B. Wright 《Public Choice》1993,76(1-2):103-123
Several empirical studies have suggested that legislators engage in a surprisingly large degree of on-the-job consumption, or ideological behavior. These findings cast doubt on the hypothesis that legislators can be modelled as though they seek to maximize political support. This paper attempts to determine whether commonly used proxies for ideology in fact represent behavior to which voters are averse. The results show that legislators who engage in more of this behavior lose general-election support without generally receiving compensating increases in partyprimary support. A corollary to this result is that voters punish shirking legislators significantly. 相似文献
56.
Morphine-3-D glucuronide stability in postmortem specimens exposed to bacterial enzymatic hydrolysis
Carroll FT Marraccini JV Lewis S Wright W 《The American journal of forensic medicine and pathology》2000,21(4):323-329
Medical examiners frequently rely on the finding of free morphine present in postmortem specimens to assist in certifying deaths associated with narcotics. In vitro hydrolysis of morphine-3-D glucuronide (M3DG) to free morphine was studied using variable specimen pH, initial degree of specimen putrefaction, storage temperature and time, and the effectiveness of sodium fluoride (NaF) preservation. Reagent M3DG was added to opiate-free fresh blood and urine and to autopsy-derived blood specimens. Reagent bovine glucuronidase was also added to certain specimens. Freshly collected and refrigerated NaF-preserved blood produced minimal free morphine, whereas four of five autopsy blood specimens produced free morphine from M3DG. Increased storage time, temperature, and initial degree of putrefaction resulted in greater free morphine generation despite the absence of viable bacteria. Hydrolysis occurring during specimen storage can generate free morphine from M3DG and may result in erroneous conclusions in certifying narcotic deaths. 相似文献
57.
58.
Carbon monoxide (CO) poisoning as a cause of death is well documented in industrialized countries. The objective of this study was to compare demographic data in deaths due to accidents (in fires) and suicides in the same population between 1988 and 1998. Furthermore, the potential effect of a community wide education effort regarding safety in the home was assessed. Postmortem reports were reviewed for all deaths examined at the Office of the Cuyahoga County Coroner in Cleveland, OH, USA. During the study period, there were 209 accidental deaths due to fires in the home (6.5% of all accidents in the home) and 182 CO deaths by suicide (9.8% of all suicides). Demographic characteristics of the two groups differed: while males represented the majority of cases in both groups (55% of accidents, 70% suicides), race specific death rates were higher for whites than blacks (18/100,000 white, 3/100,000 black) in suicides compared with 29/100,000 deaths for blacks and 11/100,000 for whites in accidental cases. Fire deaths were prevalent in the young (0-9 years) and old (>60) whereas in the suicide group the age specific death rate was highest for those over 70 years. The majority of fire deaths occurred in the city of Cleveland but suicides were prevalent in the suburbs. More fire deaths occurred in December than any other month whereas more suicides occurred in April. In 1992, there was a community wide effort to provide free smoke detectors to residents in Cleveland. In 1992, there were 4.2/100,000 fire deaths in the city. This decreased to 0.6/100,000 in 1996, increased to 1.2/100,000 in 1997 followed by a decrease to 0.8/100,000 in 1998. This suggested that the program may have aided in decreasing these types of deaths. Deaths due to fires in the suburbs were <1/100,000 throughout the study period. 相似文献
59.
60.
Gilson T Parks BO Porterfield CM 《The American journal of forensic medicine and pathology》2003,24(3):306-308
Suicide by asphyxiation with a plastic bag placed over the head is a method that has been advocated by right-to-die groups. Recently, such groups have proposed the introduction of helium into the plastic bag as a means of hastening death. Helium is readily available at toy stores, where it is sold in tanks for balloon inflation. It produces asphyxiation by the exclusion of oxygen in enclosed spaces. We report 7 fatalities throughout an 18-month period involving plastic bag suffocation in conjunction with helium use. These fatalities coincide with publication of an update to a popular right-to-die text in which this method is described. Although right-to-die literature was absent from all scenes, this method was not previously observed in our jurisdiction, and the deaths likely reflect exposure to this information. Because of analytical difficulties in testing for helium in biologic specimens, death certification rests on scene investigation. 相似文献