全文获取类型
收费全文 | 30403篇 |
免费 | 567篇 |
国内免费 | 1篇 |
专业分类
管理学 | 4186篇 |
民族学 | 164篇 |
人才学 | 2篇 |
人口学 | 2654篇 |
丛书文集 | 134篇 |
教育普及 | 3篇 |
理论方法论 | 2632篇 |
综合类 | 280篇 |
社会学 | 15429篇 |
统计学 | 5487篇 |
出版年
2023年 | 180篇 |
2021年 | 186篇 |
2020年 | 457篇 |
2019年 | 685篇 |
2018年 | 808篇 |
2017年 | 1092篇 |
2016年 | 820篇 |
2015年 | 573篇 |
2014年 | 835篇 |
2013年 | 5497篇 |
2012年 | 1083篇 |
2011年 | 1023篇 |
2010年 | 759篇 |
2009年 | 662篇 |
2008年 | 752篇 |
2007年 | 725篇 |
2006年 | 810篇 |
2005年 | 612篇 |
2004年 | 607篇 |
2003年 | 546篇 |
2002年 | 575篇 |
2001年 | 753篇 |
2000年 | 664篇 |
1999年 | 632篇 |
1998年 | 463篇 |
1997年 | 393篇 |
1996年 | 467篇 |
1995年 | 486篇 |
1994年 | 455篇 |
1993年 | 447篇 |
1992年 | 489篇 |
1991年 | 473篇 |
1990年 | 480篇 |
1989年 | 426篇 |
1988年 | 413篇 |
1987年 | 346篇 |
1986年 | 363篇 |
1985年 | 385篇 |
1984年 | 360篇 |
1983年 | 299篇 |
1982年 | 277篇 |
1981年 | 227篇 |
1980年 | 259篇 |
1979年 | 282篇 |
1978年 | 220篇 |
1977年 | 191篇 |
1976年 | 165篇 |
1975年 | 169篇 |
1974年 | 142篇 |
1973年 | 120篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
31.
32.
33.
A NOTE ON EVANESCENT PROCESSES 总被引:1,自引:0,他引:1
This note examines the connection between μ-invariant measures for the transition function of a continuous-time Markov chain and those of its q-matrix, Q. The major result establishes a necessary and aufficient condition for a convergent μ-invariant measure for Q to be μ-inhant for the minimal transition function, P, under the assumption that P is honest. This corrects Theorem 6 of Vere-Jones (1969) and the first part of Corollary 1 of Pollett (1986), both of which assert that the above conclusion holds in the absence of this condition. The error was pointed out by E.A. van Doom (1991) and the counterexample which be presented provides the basis for the present arguments. In determining where the error occurred in the original proof, we are able to identify a simple sufficient condition for μ-invariance. 相似文献
34.
A role-reversal in the mother-daughter relationship 总被引:1,自引:1,他引:0
Roberta Kabat Ph.D. 《Clinical Social Work Journal》1996,24(3):255-269
Psychoanalytic theorists have noted a particular dynamic in the mother-infant relationship in which the emotional needs of the mother predominate. When this situation occurs, the emotional needs of the infant may go unmet, resulting in impaired self-development. Through an integration of the ideas of mainstream psychoanalytic theorists and feminist psychoanalytic thinkers, this paper proposes the idea that, because of the intensity of the mother-daughter relationship, this dynamic may be more prevalent between mothers and daughters than between mothers and sons. A mother-daughter relationship is described in which the mother comes to depend on her daughter for emotional attunement and response, and the mother's selfobject needs predominate. As a consequence, the daughter is unable to develop a cohesive sense of self and experiences difficulty in achieving separation. Two clinical reports are presented to illustrate the way in which this mother-daughter dynamic manifests itself in the patient's life and in the therapeutic relationship. A negative transference dynamic is described resulting from these patient's fear of duplicating their relationship with their mothers in the therapeutic relationship by having to meet the selfobject needs of the therapist. 相似文献
35.
María del Carmen Méndez García 《Intercultural Education》2005,16(1):57-68
The sociocultural content of foreign language textbooks has become a concern of scholars and practitioners owing to the fact that the traditional emphasis on purely linguistic issues has been expanded to embrace a language in context approach. This paper studies the English‐speaking communities that are described in English language teaching textbooks marketed in Spain. It examines to what extent an international and/or intercultural approach is a constituent element in their design. 相似文献
36.
Patrick D. Bourke 《Journal of applied statistics》2002,29(8):1121-1133
A Continuous Sampling Plan, CSP-CUSUM, is proposed based on the use of Cumulative Sums (CUSUMs) for deciding when to switch between the phases of sampling inspection and 100% inspection. The Geometric CUSUM, also termed the Run-length CUSUM, is chosen for this purpose, and two separate CUSUMs are to be operated, one for each inspection phase. The conventional measures of performance for CSPs such as average outgoing quality, average fraction inspected, and average proportion passed under sampling inspection are evaluated for CSP-CUSUM, and comparisons with some standard CSPs are presented. An additional performance-measure, Average Cycle Length, is proposed. A table is provided to aid the choice of parameters for the operation of CSP-CUSUM. It is recommended that a Geometric CUSUM control chart be maintained in parallel with CSP-CUSUM to detect significant upward shifts in the incoming fraction defective. 相似文献
37.
38.
A sample size justification should be given for all clinical investigations. However, sometimes the objective of a trial is to estimate an effect with a view to planning a later definitive study. This paper describes the calculations for designing studies where one wishes to adopt an estimation approach through using confidence intervals around the overall response. Calculations are given for data anticipated to take a Normal form. Copyright © 2004 John Wiley & Sons, Ltd. 相似文献
39.
Professor Stephen Senn Dr Dipti Amin Professor Rosemary A. Bailey Professor Sheila M. Bird FFPH Dr Barbara Bogacka Mr Peter Colman Dr rew Garrett Professor rew Grieve Professor Sir Peter Lachmann FRS FMedSci 《Journal of the Royal Statistical Society. Series A, (Statistics in Society)》2007,170(3):517-579
40.