全文获取类型
收费全文 | 855篇 |
免费 | 47篇 |
出版年
2020年 | 12篇 |
2019年 | 16篇 |
2018年 | 22篇 |
2017年 | 13篇 |
2016年 | 20篇 |
2015年 | 17篇 |
2014年 | 12篇 |
2013年 | 77篇 |
2012年 | 21篇 |
2011年 | 19篇 |
2010年 | 14篇 |
2009年 | 8篇 |
2008年 | 31篇 |
2007年 | 41篇 |
2006年 | 21篇 |
2005年 | 25篇 |
2004年 | 27篇 |
2003年 | 34篇 |
2002年 | 23篇 |
2001年 | 16篇 |
2000年 | 12篇 |
1999年 | 10篇 |
1998年 | 22篇 |
1997年 | 18篇 |
1996年 | 25篇 |
1995年 | 11篇 |
1994年 | 13篇 |
1993年 | 14篇 |
1992年 | 17篇 |
1991年 | 12篇 |
1989年 | 8篇 |
1987年 | 9篇 |
1985年 | 12篇 |
1984年 | 12篇 |
1983年 | 13篇 |
1982年 | 8篇 |
1981年 | 11篇 |
1980年 | 9篇 |
1978年 | 10篇 |
1977年 | 10篇 |
1976年 | 14篇 |
1975年 | 7篇 |
1974年 | 10篇 |
1972年 | 7篇 |
1966年 | 8篇 |
1957年 | 7篇 |
1956年 | 7篇 |
1955年 | 7篇 |
1954年 | 7篇 |
1953年 | 8篇 |
排序方式: 共有902条查询结果,搜索用时 15 毫秒
31.
A maximum likelihood method for latent class regression involving a censored dependent variable 总被引:1,自引:0,他引:1
The standard tobit or censored regression model is typically utilized for regression analysis when the dependent variable is censored. This model is generalized by developing a conditional mixture, maximum likelihood method for latent class censored regression. The proposed method simultaneously estimates separate regression functions and subject membership in K latent classes or groups given a censored dependent variable for a cross-section of subjects. Maximum likelihood estimates are obtained using an EM algorithm. The proposed method is illustrated via a consumer psychology application. 相似文献
32.
Andrew Wayne 《Erkenntnis》1997,46(2):165-173
Nick Huggett and Robert Weingard (1994) have recently proposed a novel approach to interpreting field theories in physics, one which makes central use of the fact that a field generally has an infinite number of degrees of freedom in any finite region of space it occupies. Their characterization, they argue, (i) reproduces our intuitive categorizations of fields in the classical domain and thereby (ii) provides a basis for arguing that the quantum field is a field. Furthermore, (iii) it accomplishes these tasks better than does a well-known rival approach due to Paul Teller (1990, 1995). This paper contends that all three of these claims are mistaken, and suggests that Huggett and Weingard have not shown how counting degrees of freedom provides any insight into the interpretation or the formal properties of field theories in physics. 相似文献
33.
Wayne W. Fisher Cathleen C. Piazza Lynn G. Bowman Gregory P. Hanley John D. Adelinis 《Journal of applied behavior analysis》1997,30(1):105-120
Mechanical restraints are commonly used to reduce the risks associated with severe self-injurious behavior (SIB), but may result in movement restriction and adverse side effects (e.g., bone demineralization). Restraint fading may provide a method for decreasing SIB while increasing movement and reducing these side effects. In the current investigation, rigid arm sleeves and restraint fading (gradually reducing the rigidity of the sleeves) were used with 3 clients who engaged in hand-to-head SIB. Restraints and fading reduced the hand-to-head SIB of all clients. However, for 1 client, the addition of a water mist procedure further reduced SIB to near-zero levels. For a 2nd client, another form of SIB developed that was not prevented by the rigid sleeves. For a 3rd client, a topography of SIB that was not physically prevented by the rigid sleeves was also reduced when restraints and fading were introduced. 相似文献
34.
BALANCING SOCIAL ACCEPTABILITY WITH TREATMENT EFFECTIVENESS OF AN INTRUSIVE PROCEDURE: A CASE REPORT
Nancy C. Grace Sung Woo Kahng Wayne W. Fisher 《Journal of applied behavior analysis》1994,27(1):171-172
The debate over social acceptability of intrusive procedures has led some school districts to adopt policies allowing punishment for only the most extreme forms of destructive behavior. We investigated the effectiveness of selectively implementing punishment for only the most severe topographies of aggression and property destruction, while less extreme behaviors were ignored. Results indicated that severe behaviors were reduced to near-zero levels only when both severe and less severe behaviors were similarly punished. 相似文献
35.
Adrianna Amari Nancy C. Grace Wayne W. Fisher 《Journal of applied behavior analysis》1995,28(3):341-342
The ketogenic diet, a treatment for intractable epilepsy, is rarely initiated because it requires strict compliance with a diet that is perceived to be unpalatable. In a case study of a 15-year-old girl with uncontrolled epilepsy, we used a stimulus-choice procedure to assess relative preferences of 33 foods from the diet and to develop two treatments based on Premack's principle. The results of a multielement analysis showed that both treatments increased dietary compliance. Compliance was maintained with generalization of treatment across settings, and was associated with a 40% reduction in seizures. 相似文献
36.
E. Wayne Holden Wendy B. Schuman 《Journal of clinical psychology in medical settings》1995,2(1):71-87
We reviewed the literature on the detection and management of mental health disorders within the context of pediatric primary care. Pediatricians have displayed a low sensitivity and high specificity in research investigating the detection of mental health impairment in children. Active management efforts characterize approaches to identified cases with more recently trained primary care pediatricians displaying a wider range of skills in managing mental health disorders. Few efforts have been made by pediatric psychologists to develop strategies for enhancing detection rates and management or to empirically evaluate the integration of pediatric psychology services into the primary care context. A conceptual model of factors influencing detection rates and ongoing management of mental health disorders within pediatric primary care is presented. Recommendations are made for more direct involvement of pediatric psychologists within the primary care context. 相似文献
37.
Nancy C. Grace Rachel Thompson Wayne W. Fisher 《Journal of applied behavior analysis》1996,29(2):239-242
Assessment and treatment of covert self-injurious behavior are complicated because it is difficult to quantify and apply differential consequences to covert responses. In this study, both tangible and social reinforcers were identified using reinforcer assessment methods. These reinforcers were then provided contingent upon the absence of tissue damage identified during physical examinations, resulting in near 100% success in physical assessment checks that was maintained over 10 months. 相似文献
38.
K. Mark Derby Wayne W. Fisher Cathleen C. Piazza 《Journal of applied behavior analysis》1996,29(1):107-110
Self-restraint and self-injurious behavior (SIB) are two responses that can sometimes be members of the same functional response class (i.e., maintained by the same contingency). In such cases, a single treatment should be effective for both responses. In this investigation, we examined the effects of providing attention (the presumed reinforcer) both noncontingently and contingent upon either SIB or self-restraint. Results were consistent with our hypothesis that both responses were maintained by attention and suggested that noncontingent reinforcement was a potentially effective treatment. 相似文献
39.
Cathleen C. Piazza Wayne W. Fisher Gregory P. Hanley Kellie Hilker K. Mark Derby 《Journal of applied behavior analysis》1996,29(2):137-152
In the current investigation, a modification was made to the preference assessment described by Pace, Ivancic, Edwards, Iwata, and Page (1985) to predict the effects of stimuli when used in a differential-reinforcement-of-other-behavior (DRO) schedule for 2 clients with severe self-injurious behavior (SIB) and profound mental retardation. Based on the results of the preference assessment, three types of stimuli were identified: (a) high-preference stimuli associated with high rates of SIB (HP/HS), (b) high-preference stimuli associated with relatively lower rates of SIB (HP/LS), and (c) low-preference stimuli associated with low rates of SIB (LP/LS). Consistent with the results of the preference assessment, the DRO schedule with HP/HS stimuli resulted in increased SIB, and the DRO schedule with LP/LS stimuli resulted in no changes in SIB. HP/LS stimuli were demonstrated reinforcers but did not result in a change in SIB when used in a DRO schedule. Thus, the stimulus preference assessment may be useful clinically in some situations for predicting both the beneficial and the negative side effects of stimuli in DRO procedures. 相似文献
40.
Wayne Donaldson 《Memory & cognition》1996,24(4):523-533
Participants in recognition memory studies are now often asked to partition recognized items into ones that are accompanied by some recollective experience (those they remember) and ones that are not so accompanied (but which they know were previously encountered). Rather than detecting separate memory systems, such attempts to distinguish between remembering and knowing are better understood as a division of positive recognition responses into those that lie above a second decision criterion (remember) and those that do not (know). As such, the amount of memory associated with knowing is strongly dependent on the placement of the decision criteria. A meta-analysis of published data and a simple experiment tested predictions from the decision process analysis of remember/know responses. 相似文献