全文获取类型
收费全文 | 683篇 |
免费 | 63篇 |
专业分类
各国政治 | 9篇 |
工人农民 | 15篇 |
世界政治 | 7篇 |
外交国际关系 | 4篇 |
法律 | 543篇 |
中国共产党 | 10篇 |
中国政治 | 49篇 |
政治理论 | 21篇 |
综合类 | 88篇 |
出版年
2024年 | 1篇 |
2023年 | 7篇 |
2022年 | 8篇 |
2021年 | 8篇 |
2020年 | 29篇 |
2019年 | 25篇 |
2018年 | 10篇 |
2017年 | 37篇 |
2016年 | 32篇 |
2015年 | 16篇 |
2014年 | 31篇 |
2013年 | 64篇 |
2012年 | 38篇 |
2011年 | 58篇 |
2010年 | 44篇 |
2009年 | 42篇 |
2008年 | 46篇 |
2007年 | 56篇 |
2006年 | 31篇 |
2005年 | 20篇 |
2004年 | 30篇 |
2003年 | 27篇 |
2002年 | 14篇 |
2001年 | 20篇 |
2000年 | 6篇 |
1999年 | 4篇 |
1998年 | 4篇 |
1997年 | 2篇 |
1996年 | 5篇 |
1995年 | 3篇 |
1994年 | 5篇 |
1993年 | 3篇 |
1992年 | 3篇 |
1991年 | 4篇 |
1990年 | 3篇 |
1989年 | 2篇 |
1988年 | 2篇 |
1987年 | 4篇 |
1986年 | 1篇 |
1985年 | 1篇 |
排序方式: 共有746条查询结果,搜索用时 15 毫秒
131.
Kuen-tae Kim 《The History of the Family》2013,18(1):69-87
While the urban area was increasingly filled with middle- and low-status residents, the rural area was dominated by high-status settlers whose number increased because of migration from the city and natural growth. Remarkable differences existed between urban and rural marriage features such as marriage age and rate of remarriage. The more sincere adoption of the high-status marriage culture in the rural area may be attributed to its occupational homogeneity. In the rural agrarian settings, landlords, self-cultivators and tenants shared a similar living pattern and value system based on the agricultural cycle. The urban area, however, exhibited a variety of work patterns of local functionaries, artisans and merchants. Many middle- and low-status people might well have found the high-status culture of the rural area incompatible with their own. 相似文献
132.
The methodological choices made in a survey may partly shape the picture a survey conveys of partnership violence. This article considers some of the choices made in the Finnish survey on violence against women, such as the way the violence was defined and how the definition tried to take into account the special characteristics of this kind of violence, in order to help the respondents to identify and recall different events of it. The empirical analyses showed that the used definition of violence had not reached all the respondents representing different population groups. The experiences of partner violence among older, less educated women, and the experiences of those who felt embarrassed or ashamed to speak about issues concerning their partner or partnership, were more probably under-represented in the survey. 相似文献
133.
日益增长的老年人健康需求是老龄化带来的诸多挑战中的一个重要方面。新一轮医药卫生体制改革突出强调基本医疗服务供给和基层卫生服务体系建设,在缓解老年人健康压力方面有一定的积极作用。老年人在身体条件、经济能力、思想观念等方面的特点,使得其就医行为受到机构服务能力、距离、费用、就医过程等多方面因素影响。在新医改背景下,需要结合这些影响因素继续完善基层医疗服务体系,以更好地满足老年群体健康需求。 相似文献
134.
Roxane M. Limmen B.A.S. Manon Ceelen Ph.D. Udo J.L. Reijnders Ph.D. S. Joris Stomp M.Sc. Koos C. de Keijzer M.Sc. Kees Das Ph.D. 《Journal of forensic sciences》2013,58(2):518-522
The use of narrow‐banded visible light sources in improving the visibility of injuries has been hardly investigated, and studies examining the extent of this improvement are lacking. In this study, narrow‐banded beams of light within the visible light spectrum were used to explore their ability in improving the visibility of external injuries. The beams of light were induced by four crime‐lites® providing narrow‐banded beams of light between 400 and 550 nm. The visibility of the injuries was assessed through specific long‐pass filters supplied with the set of crime‐lites®. Forty‐three percent of the examined injuries improved in visibility by using the narrow‐banded visible light. In addition, injuries were visualized that were not visible or just barely visible to the naked eye. The improvements in visibility were particularly marked with the use of crime‐lites® “violet” and “blue” covering the spectrum between 400–430 and 430–470 nm. The simple noninvasive method showed a great potential contribution in injury examination. 相似文献
135.
Alberto Amadasi M.D. Daniele Merli B.Sc. Alberto Brandone B.Sc. Pasquale Poppa B.Sc. Daniele Gibelli M.D. Cristina Cattaneo Ph.D. M.D. 《Journal of forensic sciences》2013,58(4):964-966
Gunshot residue (GSR) has been sought and demonstrated on many types of material and with many techniques. Inductively coupled plasma optical emission spectrometry (ICP‐OES) could be a useful method on difficult substrates, but a systematic study on burnt material has never been performed. Hence, this study aims at evaluating the usefulness and reliability of this method on burnt samples. Sixteen adult bovine ribs (eight with soft tissues, eight totally skeletonized) were shot using two kinds of projectile (both 9 mm full metal‐jacketed or unjacketed). Then, every sample was led to complete calcination in an electric oven. The area of the gunshot entrance wound was swabbed and analyzed by ICP‐OES; the results were also correlated with a previously published parallel study by scanning electron microscopy (SEM) equipped with an SEM–energy dispersive X‐ray analyzer. ICP‐OES proved to be very sensitive and reliable even on degraded material and can be an appropriate nondestructive method for detecting residues on difficult and delicate substrates such as burnt bone. 相似文献
136.
The aim of this study was to analyze the accuracy and the reliability of four methods of dental age estimation (Demirjian, Willems I, Willems II, and Chaillet standards) in a French population. Orthopantomograms of 743 children aged between 4 and 15 years were used. The Demirjian standards gave a consistent overestimation of dental age compared with chronological age (+0.45 and +0.46 years for girls and boys, respectively). We found that three modified methods were more accurate for both sexes than Demirjian's method: the Willems I method appeared to be more suitable when the sex and ethnicity are both known (?0.09 and +0.14 years for girls and boys, respectively); the Willems II method was more accurate for children of unknown sex (mean difference = 0.00 years), and the Chaillet method was found to be more accurate than the Demirjian method, but less accurate than the Willems I method (?0.59 and ?0.18 years for girls and boys, respectively). 相似文献
137.
Fabio Corradi M.Sc. Vilma Pinchi D.D.S. Ph.D. Iljà Barsanti Ph.D. Stefano Garatti D.D.S. 《Journal of forensic sciences》2013,58(1):51-59
Abstract: This study introduces a method to classify individuals according to an age threshold, given sex and third molars’ dental maturity measured on the Demirjian scale by expressing uncertainty on dental evidence (soft evidence). We introduced a procedure to learn the parameters of the Naïve Bayes model, and we discussed two classification rules. The model was estimated and tested on 559 Italians aged 16–22. Two experts provided the dental evaluations, and the model was estimated for each of them. We evaluated the coherence of the evidence provided by the experts. Some indexes have been proposed to evaluate the effectiveness of the models, emphasizing how the experts’ ability and the technology affect the results. We introduced two benchmarks, one based on the sample distribution per sex and age: in this case, probability of correct classification increases 22% and the proportion of false adults impressively decreases 80.2%; the other benchmark, obtained by simulating hard evidence, shows how the use of soft evidence increases the proportion of correct classification 3.1% and decreases the crucial proportion of false adults about 20%. Similarly, the proportion of false minors decreases about 5.3%. 相似文献
138.
This study examines the reliability of age estimation utilizing the Greulich and Pyle atlas in relation to a modern Scottish population. A total of 406 left‐hand/wrist radiographs (157 females and 249 males) were age‐assessed using the Greulich and Pyle atlas. Analysis showed that there was a strong correlation between chronological age and estimated age (females R2 = 0.939, males R2 = 0.940). When age groups were broken down into year cohorts, the atlas over‐aged females from birth until 13 years of age. The pattern for males showed that the atlas under‐estimated age until 13 years of age after which point it consistently over‐aged boys between 13 and 17 years of age. This study showed that the Greulich and Pyle atlas can be applied to a modern population but would recommend that any analysis takes into account the potential for over‐ and under‐aging shown in this study. 相似文献
139.
Anja Sasso D.D.S. Ph.D. Stjepan Špalj D.D.S. Ph.D. Barbara Mady Maričić D.D.S. Ph.D. Antun Sasso M.D. Ph.D. Tomislav Ćabov D.D.S. Ph.D. Mario Legović D.D.S. Ph.D. 《Journal of forensic sciences》2013,58(3):673-677
The study evaluated secular trends in dental development during a period of 30 years, correlation between dental and chronological age in Istria and the littoral region of Croatia. The sample consisted of 1000 panoramic radiographs of children, aged 6–16 years (mean 10.0 ± 1.8), taken in the period 1977–1979 (N = 500; 243 females) and 2007–2009 (N = 500; 299 females). Dental age was assessed according to Demirjian's method. Correlation between chronological and dental age was linear, positive, high, and statistically significant in both periods and genders, ranging from 0.73 to 0.86. Dental age was underestimated when compared to chronological age by 1 year on average, more 30 years ago (?1.35 ± 1.17) than today (?0.63 ± 1.09), less for girls (?0.80 ± 1.22) than boys (?1.21 ± 1.10). A statistically significant positive secular trend in acceleration of dental development was present of 0.72 years during the 30‐year period and was more significant in girls than boys (0.83‐ and 0.51‐year acceleration). 相似文献
140.
Callie Marie Rennison 《Women & Criminal Justice》2013,23(3):171-190
Studies of public support for capital punishment have consistently observed a strong and enduring gender gap in the level of death penalty support, with males consistently more inclined than females to support capital punishment. This unexplained relationship has endured over time and space as well as across a myriad of research designs. The present study uses attribution theory in a factorial survey design to account for this relationship. Analyses of data obtained from jurors provide mixed support for attribution theory yet fails to bridge the gender gap in death penalty support. The implications of these findings as they relate to gender, socialization, and attributions are discussed. 相似文献