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   24239篇
  免费   1047篇
  国内免费   20篇
  2020年   303篇
  2019年   329篇
  2018年   482篇
  2017年   496篇
  2016年   523篇
  2015年   394篇
  2014年   420篇
  2013年   2062篇
  2012年   820篇
  2011年   903篇
  2010年   544篇
  2009年   557篇
  2008年   738篇
  2007年   751篇
  2006年   663篇
  2005年   585篇
  2004年   572篇
  2003年   600篇
  2002年   572篇
  2001年   806篇
  2000年   804篇
  1999年   588篇
  1998年   277篇
  1997年   283篇
  1996年   246篇
  1995年   248篇
  1993年   248篇
  1992年   457篇
  1991年   409篇
  1990年   421篇
  1989年   407篇
  1988年   398篇
  1987年   382篇
  1986年   389篇
  1985年   385篇
  1984年   346篇
  1983年   317篇
  1982年   227篇
  1981年   226篇
  1979年   296篇
  1978年   275篇
  1977年   233篇
  1976年   239篇
  1975年   274篇
  1974年   328篇
  1973年   284篇
  1972年   256篇
  1971年   212篇
  1969年   227篇
  1968年   242篇
排序方式: 共有10000条查询结果,搜索用时 31 毫秒
841.
842.
843.
844.
845.
Heterosexism is a form of multicultural bias that has the potential to harm both clients and supervisees. Supervisors are encouraged to examine their own heterosexist lens as a first step in providing a safe environment in which supervisees can challenge their own heterosexism. The issue of heterosexism is first discussed from an ethical vantage point. The second section of the article examines four facets of heterosexism (discrimination, lack of knowledge, stereotyping, and insensitivity) and how they might be exhibited by the supervisor in the supervision arena. Special topics discussed in this section include: the possible consequences of “coming out” in the supervisory context; the presence of heterosexism in the foundational family systems theory; the need for recognition of the special family characteristics of lesbians, gays, and bisexuals; the value of personal and professional relationships with persons who are gay, lesbian, and bisexual; common heterosexist stereotypes and research that refutes them; and the use of language. The final section of the article offers suggestions for working with supervisees around these issues.  相似文献   
846.
847.
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   
848.
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   
849.
The choice-making behavior of 5 young children with developmental disabilities who engaged in aberrant behavior was studied within a concurrent operants framework. Experimental analyses were conducted to identify reinforcers that maintained aberrant behavior, and functional communication training packages were implemented to teach the participants to gain reinforcement using mands. Next, a choice-making analysis, in which the participants chose one of two responses (either a mand or an alternative neutral response) to obtain different durations and qualities of reinforcement, was conducted. Finally, treatment packages involving choice making via manding were implemented to decrease inappropriate behavior and to increase mands. The results extended previous applications of choice making to severe behavior disorders and across behaviors maintained by positive and negative reinforcement.  相似文献   
850.
Children voluntarily adopt a frequency and movement pattern for walking. The force-driven harmonic oscillator (FDHO) model was used in this study for accurate prediction of the preferred walking frequency of nondisabled children and children with spastic hemiplegic cerebral palsy. Four potential optimality criteria with which the preferred walking pattern was forced to comply were examined: minimization of physiological costs, maximization of mechanical energy conservation, minimization of asymmetry in lower limb movements and minimization of variability of interlimb and intralimb coordination. Age and gender-matched nondisabled children (n = 6) and children with spastic hemiplegic cerebral palsy (n = 6) were tested under six frequency conditions of walking at a constant speed on a treadmill. For the nondisabled children, the results indicated that their preferred walking frequency could be accurately predicted by the FDHO model. They freely adopted a walking pattern that minimized physiological costs, asymmetry, and variability of inter- and intralimb coordination. For the children with spastic hemiplegic cerebral palsy, the prediction of preferred overground walking frequency required that the FDHO model be modified to account for muscle mass and leg length discrepancies between limbs and increased stiffness. Most of the children achieved the same optimality goals as the nondisabled when walking at the preferred frequency. However, the children were found to use different mechanisms to attain these goals: for example, a steeper increase observed in physiological cost at higher frequencies; a lowered center of gravity of the body, which allowed for angular symmetry; and greater variability of between-joint coordination in the nonaffected limb and less variability in the affected limb.  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