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A nonparametric technique based on the Hamming distance is proposed in this research by recognizing that once the attribute vector is known, or correctly estimated with high probability, one can determine the item-by-attribute vectors for new items undergoing calibration. We consider the setting where Q is known for a large item bank, and the q-vectors of additional items are estimated. The method is studied in simulation under a wide variety of conditions, and is illustrated with the Tatsuoka fraction subtraction data. A consistency theorem is developed giving conditions under which nonparametric Q calibration can be expected to work.  相似文献   
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The purpose of this study was to use a longitudinal path analysis to test attitudes toward suicide prevention, self‐efficacy, and behavioral intentions as mediators/moderators of clinical skill development over time following suicide intervention training. Results support a direct effect of attitudes on practice behaviors and self‐efficacy, but no moderating effect. Self‐efficacy performed as a mediator of practice behaviors over time. Behavioral intention had a direct effect on practice behaviors and mediated the relationship between attitudes and practice behaviors. Implications for research and practice are discussed.  相似文献   
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The experience of loneliness has become ubiquitous in society today. However, despite the prevalence and considerable effects of loneliness, research on how this societal issue relates to the workplace remains limited. To address this shortcoming, we propose that loneliness is a permeating force that has a robust and persistent negative effect on employees' job satisfaction. We test our proposition using a nationally representative longitudinal sample of 627 Dutch employees surveyed each year between 2016 and 2018. Results of latent growth modeling indicate that loneliness is negatively related to job satisfaction, offering support for loneliness as a permeating force. Further, the effect of loneliness on job satisfaction remains significant despite controlling for well-established predictors of job satisfaction found in the Jobs-Demand Resource model (i.e., robustness) and has a significant influence on the trajectory of employees' job satisfaction over several years (i.e., persistence). On the basis of these results, we make the theoretical contribution of proposing that loneliness is a permeating force that infiltrates individuals' experiences at work. We further argue that the ramifications of loneliness on employees, and subsequently the organizations that employ them, are likely far more significant, sustained, and irrespective of work characteristics than previously understood.  相似文献   
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The effects of therapist‐worn protective equipment (PE) on functional analysis (FA) outcomes for aggression were evaluated. Independent FAs with and without PE were conducted concurrently. Both FAs showed the same function of aggression for all participants. These results suggest that therapists may wear PE during FAs of aggression to reduce risk without altering the interpretation of the analysis.  相似文献   
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Sales management control systems (SMCSs) are designed to align salespeople's activities and actions with organizational objectives. This article reviews and synthesizes over 50 SMCS articles published in sales, marketing, and management journals over the past 30 years. We begin by building a comprehensive framework that enables us to classify prior research into digestible categories (e.g., SMCSs as antecedents, SMCSs as consequences). Next, we present an analysis of gaps in the literature. Among other findings, our analysis reveals that there is an overwhelming focus on the use of formal (specifically behavior- and outcome-based) controls as compared to their informal control counterparts. Finally, we suggest avenues for future research: (1) mapping and understanding the full spectrum of control mechanisms, (2) developing a fuller understanding of the often-overlooked forms of control (e.g., input and cultural controls), and (3) more thoroughly analyzing how controls operate (or do not operate) as an integrated system.  相似文献   
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Objective: People living with HIV (PLWH) commonly report sleep disturbances which are associated with long-term health consequences, including disease progression. PLWH also experience internalised stigma as a result of their HIV status, which can be associated with increased loneliness and depression. Little attention focuses on the impact of these factors on sleep. Therefore, we examined whether internalised HIV-stigma was indirectly related to poorer sleep quality through higher levels of loneliness and depressive symptoms.

Design: 181 PLWH from across the United States completed an online survey.

Main Study Measures: Internalised HIV-stigma was assessed using the HIV-Stigma Scale, loneliness was assessed using the UCLA-Loneliness Scale-Short Form, depressive symptoms were assessed with the Center for Epidemiologic Studies–Depression Index, and Sleep Quality was assessed using the Pittsburgh Sleep Quality Index.

Results: Internalised HIV-stigma was indirectly associated with poorer global sleep quality and daytime sleep dysfunction through both loneliness and depressive symptoms.

Conclusions: PLWH who experience HIV-related stigma may experience greater feelings of loneliness, which are related to increased depressive symptoms and poorer sleep quality. Interventions focused on improving sleep in PLWH should focus on multiple factors that influence sleep, including psychosocial factors such as stigma, social isolation and depressive symptoms.  相似文献   

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Understanding the role of leadership aspiration in the under-representation of female leaders is important, because aspiration is a key predictor of hierarchical advancement. A neglected perspective in the relationship between gender and leadership aspiration is the gender of the individual's supervisor. Supervisors can play an important role in providing support and in engendering a sense of control, and both support and control are precursors to leadership aspiration. Yet, supervisors may also act on gender biases that discourage women's leadership aspiration. We argue that there is an interaction between supervisor and subordinate gender such that men experience relatively high levels of support and control regardless of supervisor gender, whereas women experience more support and control and as a result display higher leadership aspiration with a female supervisor. A survey of N = 402 men and women supported these hypotheses regarding the subordinate gender by supervisor gender interactive influence on leadership aspiration, support, control, and the mediated moderation model.  相似文献   
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Past research has consistently shown that tests measuring specific cognitive abilities provide little if any incremental validity over tests of general mental ability when predicting performance on the job. In this study, we suggest that the seeming lack of incremental validity may have been due to the type of content that has traditionally been assessed. Therefore, we hypothesised that incremental validity can be obtained using specific cognitive abilities that are less highly correlated with g and are matched to the tasks performed on the job. To test this, we examined a recently developed performance-based measure that assesses a number of cognitive abilities related to training performance. In a sample of 310 US Navy student pilots, results indicated that performance-based scores added sizeable incremental validity to a measure of g. The significant increases in R2 ranged from .08 to .10 across criteria. Similar results were obtained after correcting correlations for range restriction, though the magnitude of incremental validity was slightly smaller (ΔR2 ranged from .05 to .07).  相似文献   
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