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   455篇
  免费   17篇
  国内免费   3篇
管理学   17篇
民族学   3篇
丛书文集   50篇
理论方法论   18篇
综合类   275篇
社会学   30篇
统计学   82篇
  2024年   2篇
  2023年   7篇
  2022年   1篇
  2021年   6篇
  2020年   8篇
  2019年   2篇
  2018年   15篇
  2017年   8篇
  2016年   5篇
  2015年   21篇
  2014年   18篇
  2013年   32篇
  2012年   34篇
  2011年   19篇
  2010年   26篇
  2009年   22篇
  2008年   23篇
  2007年   31篇
  2006年   33篇
  2005年   36篇
  2004年   33篇
  2003年   38篇
  2002年   14篇
  2001年   11篇
  2000年   12篇
  1999年   3篇
  1998年   2篇
  1997年   8篇
  1996年   4篇
  1992年   1篇
排序方式: 共有475条查询结果,搜索用时 15 毫秒
61.
随着社会和科学技术的发展,操纵证券市场行为变得越来越复杂且难以认定。比较和分析各国相关立法与我国相关规定,结合我国证券市场已经出现或可能出现的操纵行为,可见我国“以其他方法操纵证券市场”行为方式的犯罪.现阶段主要包括蛊惑交易、虚假申报、特定时段交易、抢帽子交易和违反诚信的安定操作等5种。  相似文献   
62.
介绍了海杂波的幅度分布模型,指出了对于同一门限系数"尖锐"海杂波背景下的虚警率要明显高于噪声背景下的虚警率,提出了双参数单元平均恒虚警(CA-CFAR)检测器的结构框图,仿真分析了其检测性能.最后分别利用双参数CA-CFAR检测器和常规CA-CFAR检测方法对实测数据进行处理和比较,指出在虚警率一定的前提下前者相对于后两者在空间上可以自适应地改变门限系数以有效地抑制海杂波引起的高虚警.  相似文献   
63.
新疆农户借贷行为影响因素分析   总被引:1,自引:0,他引:1  
该文以新疆212户农户调查数据为基础,分析新疆农户借贷行为特征,并运用Probit模型及Tobit模型分别估计正规借贷、非正规借贷行为的借贷意愿及借贷规模的影响因素,结果表明:借贷用途、是否入股信用社、对银行信贷政策的认知、地区分布是共同影响农户正规借贷意愿及借贷规模的主要因素;而房屋价值、医疗支出、家庭到金融机构的距离、正规借贷利率则是共同对农户非正规借贷意愿及借贷规模产生显著影响的因素。  相似文献   
64.
65.
The paper deals with the problem of electronic verification of people on the basis of measurement information of a fingerprint reader and new approaches to its solution. The offered method guaranties the restriction of error probabilities of both type at the desired level at making a decision about permitting or rejecting the request on service in the system. On the basis of investigation of real data obtained in the real biometrical system, the choice of distribution laws is substantiated and the proper estimations of their parameters are obtained. Using chosen distribution laws, the normal distribution for measurement results of characteristics of the people having access to the system and the beta distribution for the people having no such access, the optimal rule based on the Constrained Bayesian Method (CBM) of making a decision about giving a permission of access to the users of the system is justified. The CBM, the Neyman–Pearson and classical Bayes methods are investigated and their good and negative points are examined. Computation results obtained by direct computation, by simulation and using real data completely confirm the suppositions made and the high quality of verification results obtained on their basis.  相似文献   
66.
67.
基于博弈论和契约理论,研究了信息不对称条件下双寡头市场质量差异化产品定价过程中虚假信息的问题。消费者与企业关于产品质量信息存在严重不对称,为企业使用虚假质量信息提高企业利润提供了较大的空间。为分析企业使用虚假信息的问题,本文基于Bertrand博弈模型构建了双寡头市场质量差异化产品定价模型并求解企业利润。求解结果表明双寡头市场的纳什博弈均衡解为两企业均使用虚假信息,在此基础上进一步从契约的角度对企业使用虚假信息的问题进行了合理规避。最后运用算例分析验证了模型的正确性。  相似文献   
68.
The purpose of the present work is to extend the work of Gupta et al. (2010) to s  -level column balanced supersaturated designs. Addition of runs to an existing E(χ2)-optimalE(χ2)-optimal supersaturated design and to study the optimality of the resulting design is an important issue. This paper considers the study of the optimality of the resulting design. A lower bound to E(χ2)E(χ2) has been obtained for the extended supersaturated designs. Some examples and a small catalogue of E(χ2)-optimalE(χ2)-optimal supersaturated designs are also presented.  相似文献   
69.
ABSTRACT

“New” social welfare policies are often actually policies borrowed from other states or nations. This paper reviews the recent theoretical developments in understanding the processes of policy transfer and presents a “policy transfer” model that can be a useful heuristic tool for social workers engaged in policy making. It discusses how the field of social work can benefit from understanding the factors underlying successful and unsuccessful policy transfer, and argues for the inclusion of the study of policy transfer in social welfare policy courses.  相似文献   
70.
SUMMARY

The controversy surrounding delayed and recovered memories of incest/child sexual abuse has had a profound impact on clinical practice. This article first provides an overview of the positions taken by both sides in the dispute, the “false memory proponents and the traumatic stress proponents”. It then presents the major findings of several of the professional task forces charged with reviewing the controversy and arriving at recommendations for research, clinical practice, and forensic practice regarding delayed recall of memories for sexual abuse. The current status of scientific and clinical knowledge is discussed, especially in terms of its implications for therapists and clinical practice. Nineteen recommendations and practice guidelines are presented for therapists working with individuals who report or suspect childhood sexual abuse on the basis of continuous and/or recovered memory.  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