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151.
In four conditioned suppression experiments with rats (Rattus norvegicus), backward pairings of a shock unconditioned stimulus (US) and a tone conditioned stimulus (CS) eliminated an already established conditioned response (CR), but there was recovery of the CR if the shock was later withheld. In Experiment 1, there was recovery after backward pairings, regardless of whether the period after the US was normally shock free or not. In Experiment 2, the occurrence of recovery depended on the CS’s being presented closely after the US in response elimination. Levels of recovery were positively correlated with the resistance of the response to elimination during backward pairings (Experiments 3 and 4). Taken together, these data support the notion that recovery after backward pairings is a form of renewal (see, e.g., Bouton, 1991) and is not due toprotection from extinction. 相似文献
152.
This article covers the history and organisation of the American Statistics Poster Competition, and gives our view of what a statistical poster is. 相似文献
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154.
Science is not value-free, nor does it provide the only model of objectivity. Epistemic values guide the pursuit and methods of science. Cultural values, however, inevitably enter through individual practitioners. Still, the social structure of science embodies a critical system of checks and balances, and it is strengthened by a diversity of values, not fewer. Science also exports values to the broader culture, both posing new values- questions based on new discoveries, and providing a misleading model for rational decision-making. Science teachers who understand the multi-faceted relationship between science and values can guide students more effectively in fully appreciating the nature of science through reflexive exercises and case studies. 相似文献
155.
A named professional with responsibility for overseeing and coordinating the educational inclusion of pupils with special educational needs and disabilities has become an important school role in many countries. In England, the SENCO (special educational needs coordinator) became a mandatory role in 1994, and associated mandatory training was introduced in 2009. A questionnaire survey of 618 in-training and actual SENCOs revealed that their motivating interest in becoming a SENCO varied. An exploratory factor analysis of 32 items covering different interests in the role yielded four interest factors in becoming a SENCO: outward-facing factors (‘inclusion’ and ‘high-quality provision’) and inward-facing factors (‘educational and professional development’ and ‘leadership voice and status’). The outward-facing factors were viewed as more important to respondents than the inward-facing factors. Interest factors did not interact with organisational variables, including age group taught and school quality. Nevertheless, younger SENCOs and those engaged in training were more motivated by educational and professional development. SENCOs holding school leadership contracts were more motivated in developing leadership voice and status compared with their classroom teacher peers. Moreover, there was a significant overall difference with women reporting a higher interest than men across all factors. 相似文献
156.
Douglas R. Hotek 《Performance Improvement Quarterly》2002,15(2):61-83
The study reported here is an attempt to fill a void in research regarding the opinions of people who actually work on the shop floor. In addition to providing historical and modern perspectives on the supervisory profession, its primary contribution is a prioritized set of 30 supervisory skills, synthesized from extant literature in the area of human performance. Factory personnel believe these skills are what are needed for leading and improving employee performance in the complex manufacturing environment of the 21st century. Using Likert‐type rating scales to serve as the data collection instrument, subject groups (sorted by employees, supervisors, and managers) representing manufacturing firms in the Waterloo/Cedar Falls, Iowa, metropolitan areas were asked to rate the importance of each of the 30 skills. Three data analyses were conducted: a Pareto analysis to determine which categories and skills were most important, a comparative analysis to measure how the groups differed in their ratings, and a one‐way analysis of variance F‐test to determine significant differences between the mean ratings of the groups. Where significant differences were discovered, apost hoc test was also conducted to assess pairwise differences. This study was successful in identifying a Taxonomy of Supervisory Skills for improving employee performance. Although the subject groups rated all 30 skills relatively high, six specific skills were found to be most important. In the rating of nine particular skills, significant pairwise differences were discovered. 相似文献
157.
This article compares the costs of four assessment formats: multiple choice, open ended, laboratory station, and full investigation. The amount of time spent preparing the devices, developing scoring consistency for the devices, and scoring the devices was tracked as the devices were developed. These times are presented by individual item and by complete device. Times are also compared as if 1,000 students completed each assessment. Finally, the times are converted into cost estimates by assuming a potential hourly wage. The data show that a multiple choice item costs the least, and that it is approximately 80 times as much for an open ended item, 300 times as much for a content station, and 500 times as much for a full investigation item. The very large discrepancies in costs are used as a basis to raise several policy issues related to the inclusion of alternative assessment formats in large scale science achievement testing. © 2000 John Wiley & Sons, Inc. J Res Sci Teach 37: 615–626, 2000 相似文献
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159.
Large-scale writing programs can add value to the traditional timed writing assessment by using aspects of the essays to assess the effectiveness of institutional goals, programs, and curriculums. The “six learning goals” prompt in this study represents an attempt to provide an accurate writing assessment that moves beyond scores. This paper focuses on student challenges to the prompt and testing situation to reveal that many students successfully challenge the task as a deliberate strategy, while less savvy test-takers clearly resist in response to anger, confusion or frustration. While only a small minority of test-takers openly protest the prompt or testing situation, the paper suggests that all students could be better prepared to reflect upon their university experience in timed essays through more coaching and experience with reflective impromptu questions. This finding offers both encouragement and caution for writing programs seeking a single test that can generate both placement scores and valuable feedback. 相似文献
160.
Jerry L. Harbour 《Performance Improvement》2009,48(7):10-14
Organizational success begins with the creativity of strategic vision bounded in the realities of requirements that are then transformed into daily operations and associated work outputs. These operations and outputs hopefully meet predetermined and tracked performance levels. This article graphically portrays and describes an integrated performance management system model linking these critical organizational ingredients in a holistic manner. Integrated performance management represents a construct that, if properly applied, may provide the “glue” to organizational understanding, transparency, and continued improvement. 相似文献