全文获取类型
收费全文 | 24472篇 |
免费 | 1421篇 |
专业分类
各国政治 | 1031篇 |
工人农民 | 1095篇 |
世界政治 | 1755篇 |
外交国际关系 | 847篇 |
法律 | 16594篇 |
中国共产党 | 2篇 |
中国政治 | 148篇 |
政治理论 | 4281篇 |
综合类 | 140篇 |
出版年
2023年 | 120篇 |
2021年 | 143篇 |
2020年 | 529篇 |
2019年 | 589篇 |
2018年 | 750篇 |
2017年 | 806篇 |
2016年 | 883篇 |
2015年 | 633篇 |
2014年 | 728篇 |
2013年 | 2602篇 |
2012年 | 690篇 |
2011年 | 724篇 |
2010年 | 689篇 |
2009年 | 703篇 |
2008年 | 712篇 |
2007年 | 748篇 |
2006年 | 735篇 |
2005年 | 588篇 |
2004年 | 618篇 |
2003年 | 549篇 |
2002年 | 556篇 |
2001年 | 904篇 |
2000年 | 827篇 |
1999年 | 657篇 |
1998年 | 324篇 |
1997年 | 238篇 |
1996年 | 267篇 |
1995年 | 257篇 |
1994年 | 238篇 |
1993年 | 237篇 |
1992年 | 430篇 |
1991年 | 435篇 |
1990年 | 406篇 |
1989年 | 403篇 |
1988年 | 417篇 |
1987年 | 389篇 |
1986年 | 431篇 |
1985年 | 436篇 |
1984年 | 346篇 |
1983年 | 340篇 |
1982年 | 261篇 |
1981年 | 234篇 |
1980年 | 200篇 |
1979年 | 295篇 |
1978年 | 176篇 |
1977年 | 148篇 |
1976年 | 127篇 |
1975年 | 132篇 |
1974年 | 180篇 |
1973年 | 135篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
21.
This article examines the effects of negotiation practices, such as coercion and contract formality, on how suppliers and customers perceived the resulting business relationship. We conducted a purchasing negotiation simulation with students in a classroom setting in which participants competed for resources in a mock supply-chain context. The participants were surveyed at key stages of the ongoing negotiation in order to measure their behaviors as a customer–supplier relationship developed. The data were used to test several hypotheses developed from the marketing and purchasing literature. The hypotheses were analyzed using structural equation modeling.
Results demonstrated that the use of coercive techniques by negotiators during negotiation had a negative effect on satisfaction. In addition, the findings showed that, as expected, negotiators entering a negotiation with a cooperative orientation would tend to avoid the use of coercive practices during negotiation. The cooperative orientation also exhibited an unexpected positive effect on the formalization of the design of the contract between the parties. This study contributes to the current knowledge base focusing on the creation of agreements between companies and will, we hope, encourage the integration of suppliers and customers in an operating context within a supply-chain setting. 相似文献
Results demonstrated that the use of coercive techniques by negotiators during negotiation had a negative effect on satisfaction. In addition, the findings showed that, as expected, negotiators entering a negotiation with a cooperative orientation would tend to avoid the use of coercive practices during negotiation. The cooperative orientation also exhibited an unexpected positive effect on the formalization of the design of the contract between the parties. This study contributes to the current knowledge base focusing on the creation of agreements between companies and will, we hope, encourage the integration of suppliers and customers in an operating context within a supply-chain setting. 相似文献
22.
Stephen M. Bauer 《The Journal of Technology Transfer》2003,28(3-4):285-303
Technology transfer has generally had little impact on the assistive technology industries serving small, highly fragmented “disability markets.” Persons with disabilities often require specialized, relatively sophisticated technology. Third-party payer reimbursement rates and the low levels of disposable income among disability populations often cap product pricing. Transferring technology to these industry segments therefore poses special challenges. In October 1998, the Rehabilitation Engineering Research Center on Technology Transfer initiated the “Demand-Pull Project on Wheeled Mobility.” Successful transfers resulting from this project demonstrate that a systematic technology transfer process can be successfully applied to industries serving specialized and underserved niche markets. 相似文献
23.
VGH München 《Natur und Recht》2006,28(6):382-383
Keine Zusammenfassung 相似文献
24.
VG München 《Natur und Recht》2006,28(8):528-530
Keine Zusammenfassung 相似文献
25.
VGH München 《Natur und Recht》2006,28(4):269-269
Keine Zusammenfassung 相似文献
26.
This study aimed to expand the scope of previous research by assessing the effectiveness of soot-removal techniques on glass from petrol-bomb debris using methods of 1% and 2% sodium hydroxide (NaOH) solutions, ultrasonic bath and vacuum suction. Of particular interest were the 1% and 2% NaOH solutions applied to the soot-covered surfaces. Petrol bombs containing petrol or a 50:50 mix of petrol and motor oil were exploded and the debris was collected for analysis. Favourable results were found to varying degrees using each of the soot-removal methods with the 1% and 2% NaOH wash solutions, being the most useful. The 2% NaOH solution also proved successful as a soak to loosen and remove heavy contamination of soot and accelerants without damaging the finger mark beneath. This study also found that recovery of finger marks in blood from beneath soot using the 2% NaOH solution was possible. Finger marks were also applied to glass bottles with plastic adhesive labels, and providing the fire damage is not too great marks were also retrievable. Results from this study lead to the conclusion that the NaOH wash solution is ideally suited for soot removal to reveal latent and blood-contaminated marks both within the laboratory and at crime scenes. 相似文献
27.
Acute myoglobinuria as a fatal complication of heroin addiction 总被引:3,自引:0,他引:3
Y F Chan P K Wong T C Chow 《The American journal of forensic medicine and pathology》1990,11(2):160-164
A fatal case of myoglobinuria complicating heroin addiction is described. Clinically the patient had no overt symptoms of rhabdomyolysis. Pathologists should be alerted to this rare complication in heroin addicts who die of no apparent cause. The antimyoglobin immunoperoxidase technique is useful in confirming the diagnosis. 相似文献
28.
The lungs of 79 children who had died between the ages of 1 week and 2 years old were histologically examined. 59 of these children could be categorized as cases of Sudden Infant Death because of the history and postmortem findings. In the remaining 20 cases a definite cause of death could be established. This is the same collective on which the histological investigations of the lymphatic tissue has been carried out. Morphological changes which are typical for a virus pneumonia were found in a substantially higher frequency in the cases of Sudden Infant Death than in the control cases. The validity of these findings and their possible significance for the cause of death are discussed. 相似文献
29.
The conventional wisdom in criminology is that adult onset of offending is a rare event. Closer examination of the extant literature that use official records, however, reveals that an average of 50 percent of adult offenders initiate offending at age eighteen or older. Although criminological research has investigated late onset offending in adolescence, there is little research on adult onset offending and the correlates of adult offending. Using police contact and interview data from the 1942 and 1949 birth cohort data from Racine, WI, this study investigated the correlates of crime for adult onset and persistent offenders. The results show that employment is the only correlate to affect the probability of adult offending differently for previously delinquent and nondelinquent offenders. This article concludes by highlighting the neglect of research on adult offenders, specifically the large percentage of adult onset offenders, and calling for more research on this topic. 相似文献
30.
轻型颅脑损伤ABR的纵向研究 总被引:3,自引:0,他引:3
目的 探索轻型颅脑损伤的电生理学指标 ,为早期临床诊断和预后判断以及法医学活体伤害鉴定提供依据。 方法 对相关病例进行脑干诱发电位 (ABR)的动态观察 ,并对结果进行统计学分析。 结果 6 0例轻型颅脑损伤患者伤后 48小时ABR的检测 ,显示主要异常表现为I-III峰间潜伏期的延长 ,说明此类损伤可造成脑干的功能紊乱。同时通过对其中 40例进行ABR追踪检测 ,结果显示大部分患者受伤三个月后脑功能状态恢复正常。 结论 轻型颅脑损伤ABR变化具有一定的特征 ,提示可作为早期临床诊断和预后判断以及法医学活体伤害鉴定的客观依据 ,应引起关注并展开进一步研究。 相似文献