全文获取类型
收费全文 | 17795篇 |
免费 | 676篇 |
国内免费 | 4篇 |
专业分类
18475篇 |
出版年
2019年 | 244篇 |
2018年 | 301篇 |
2017年 | 267篇 |
2016年 | 314篇 |
2015年 | 213篇 |
2014年 | 299篇 |
2013年 | 1463篇 |
2012年 | 519篇 |
2011年 | 559篇 |
2010年 | 345篇 |
2009年 | 368篇 |
2008年 | 473篇 |
2007年 | 522篇 |
2006年 | 477篇 |
2005年 | 403篇 |
2004年 | 428篇 |
2003年 | 389篇 |
2002年 | 392篇 |
2001年 | 476篇 |
2000年 | 532篇 |
1999年 | 369篇 |
1998年 | 237篇 |
1997年 | 181篇 |
1996年 | 191篇 |
1995年 | 186篇 |
1994年 | 167篇 |
1992年 | 293篇 |
1991年 | 302篇 |
1990年 | 311篇 |
1989年 | 294篇 |
1988年 | 283篇 |
1987年 | 245篇 |
1986年 | 260篇 |
1985年 | 278篇 |
1984年 | 208篇 |
1983年 | 223篇 |
1982年 | 178篇 |
1980年 | 168篇 |
1979年 | 263篇 |
1978年 | 230篇 |
1975年 | 224篇 |
1974年 | 250篇 |
1973年 | 284篇 |
1972年 | 228篇 |
1971年 | 213篇 |
1970年 | 168篇 |
1969年 | 197篇 |
1968年 | 250篇 |
1967年 | 243篇 |
1966年 | 210篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
111.
The development of a campus-based Substance Abuse Prevention Program (SAPP) is discussed. The program has been designed in accordance with recommendations made by prominent authorities in this field, keeping in mind the needs of the campus at which the program is located. Suggestions for developing such programs are provided. 相似文献
112.
PHILLIP B. NIFFENEGGER THOMAS F. HOLCOMB 《Journal of counseling and development : JCD》1992,70(5):642-644
This article describes how state legislators were the target of a video marketing campaign aimed at increasing the funding for elementary counselors. How the video was developed, distributed, and used are discussed. 相似文献
113.
J. Anthony Blair 《Argumentation》1992,6(2):203-217
Premissary relevance is a property of arguments understood as speech act complexes. It is explicable in terms of the idea of a premise's lending support to a conclusion. Premissary relevance is a function of premises belonging to a set which authoritatively warrants an inference to a conclusion. An authoritative inference warrant will have associated with it a conditional proposition which is true— that is to say, which can be justified. The study of the Aristotelian doctrine of topoi or argument schemes may contribute to the task of identifying authoritative warrants. 相似文献
114.
115.
116.
Parent-tutoring procedures: Experimental analysis and validation of generalization in oral reading across passages,settings, and time 总被引:1,自引:0,他引:1
Steven F. Duvall Ph.D. Joseph C. Delquadri Ph.D. Marlene Elliott Ph.D. R. Vance Hall Ph.D. 《Journal of Behavioral Education》1992,2(3):281-303
A study that involved parents as reading tutors was carried out at home during the summer with four elementary children, three with learning disabilities. One purpose was to determine the effects of tutoring in the basal reader on reading rates at home. Another purpose was to determine potential generalization effects as a result of parent tutoring on different academic tasks at home and, later at school, on different and similar tasks. A combination multiple-baseline and reversal design tested for replication and generalization effects. Increases in correct rates were noted for the targeted variables across conditions. The results indicated that parents tutoring with school basal texts during the summer produced marked increases in reading rates that generalized at home to different academic tasks and at school to different and similar tasks. This suggests that parents, when using specific tutoring procedures, can increase their children's academic skills. 相似文献
117.
Joyce F. Lakey 《Journal of Addictions & Offender Counseling》1992,13(1):2-10
The author describes mythical beliefs, thinking errors, and faulty attitudes collected from a group of male juvenile sex offenders. Therapists need this information to develop effective treatment strategies for replacing distortions and misperceptions with correct and moral information as a foundation for change. 相似文献
118.
A running-wheel movement-detection method is described for use with a modified 1350 Commodore mouse and a Commodore 64, is described. The movement-detection method allows for the detection of partial revolutions and direction of movement, but requires no interface equipment. The modified running wheel is discussed as a new technique that may be useful for bridging empirical and theoretical differences between free-operant and discrete-trial runway procedures. 相似文献
119.
Millsap and Meredith (1988) have developed a generalization of principal components analysis for the simultaneous analysis of a number of variables observed in several populations or on several occasions. The algorithm they provide has some disadvantages. The present paper offers two alternating least squares algorithms for their method, suitable for small and large data sets, respectively. Lower and upper bounds are given for the loss function to be minimized in the Millsap and Meredith method. These can serve to indicate whether or not a global optimum for the simultaneous components analysis problem has been attained.Financial support by the Netherlands organization for scientific research (NWO) is gratefully acknowledged. 相似文献
120.
A new method for determining the minimum number of observations per subject needed to achieve a specific generalizability coefficient is presented. This method, which consists of a branch-and-bound algorithm, allows for the employment of constraints specified by the investigator. 相似文献