全文获取类型
| 收费全文 | 625篇 |
| 免费 | 78篇 |
| 国内免费 | 27篇 |
专业分类
| 730篇 |
出版年
| 2025年 | 2篇 |
| 2024年 | 17篇 |
| 2023年 | 20篇 |
| 2022年 | 11篇 |
| 2021年 | 17篇 |
| 2020年 | 31篇 |
| 2019年 | 43篇 |
| 2018年 | 33篇 |
| 2017年 | 45篇 |
| 2016年 | 41篇 |
| 2015年 | 24篇 |
| 2014年 | 26篇 |
| 2013年 | 91篇 |
| 2012年 | 26篇 |
| 2011年 | 30篇 |
| 2010年 | 21篇 |
| 2009年 | 14篇 |
| 2008年 | 37篇 |
| 2007年 | 29篇 |
| 2006年 | 30篇 |
| 2005年 | 26篇 |
| 2004年 | 16篇 |
| 2003年 | 17篇 |
| 2002年 | 16篇 |
| 2001年 | 10篇 |
| 2000年 | 9篇 |
| 1999年 | 11篇 |
| 1998年 | 3篇 |
| 1997年 | 8篇 |
| 1996年 | 10篇 |
| 1995年 | 2篇 |
| 1994年 | 3篇 |
| 1993年 | 2篇 |
| 1992年 | 1篇 |
| 1991年 | 1篇 |
| 1990年 | 1篇 |
| 1985年 | 3篇 |
| 1981年 | 1篇 |
| 1979年 | 2篇 |
排序方式： 共有730条查询结果，搜索用时 15 毫秒
551.
Extensive use of unmanned aerial vehicles (UAVs) in recent years has induced the rapid growth of research areas related to UAV production. Among these, the design of control systems capable of automating a wide range of UAV activities is one of the most actively explored and evolving. Currently, researchers and developers are interested in designing control systems that can be referred to as intelligent, e.g. the systems which are suited to solve such tasks as planning, goal prioritization, coalition formation, etc. and thus guarantee high levels of UAV autonomy. One of the principal problems in intelligent control system design is tying together various methods and models traditionally used in robotics and aimed at solving such tasks as dynamics modeling, control signal generation, location and mapping, path planning, etc. with the methods of behavior modeling and planning which are thoroughly studied in cognitive science. Our work is aimed at solving this problem. We propose layered architecture—STRL (strategic, tactical, reactive, layered)—of the control system that automates the behavior generation using a cognitive approach while taking into account complex dynamics and kinematics of the control object (UAV). We use a special type of knowledge representation—sign world model—that is based on the psychological activity theory to describe individual behavior planning and coalition formation processes. We also propose path planning methodology which serves as the mediator between the high-level cognitive activities and the reactive control signals generation. To generate these signals we use a state-dependent Riccati equation and specific method for solving it. We believe that utilization of the proposed architecture will broaden the spectrum of tasks which can be solved by the UAV’s coalition automatically, as well as raise the autonomy level of each individual member of that coalition. 相似文献
552.
Zhou Jiang 《Journal of Employment Counseling》2016,53(1):30-47
This study is the first to examine the mechanism of the relationship between emotional intelligence (EI) and career decision‐making self‐efficacy (CDMSE) and the moderating role of gender in relevant mechanisms. Analyses of 185 Chinese university students showed that EI could influence CDMSE through goal commitment (GC) and professional commitment, and male students exhibited a stronger relationship between EI and GC compared with female students. This study introduces a new perspective for career development research by establishing a mediation‐based emotion–career framework and provides deeper insights for career counselors to assist clients in career decision processes. 相似文献
553.
Soe Yoon Choi Maria K. Venetis Kathryn Greene Kate Magsamen-Conrad Maria G. Checton Smita C. Banerjee 《The Journal of psychology》2016,150(8):1004-1025
This study applied the disclosure decision-making model (DD-MM) to explore how individuals plan to disclose nonvisible illness (Study 1), compared to planning to disclose personal information (Study 2). Study 1 showed that perceived stigma from the illness negatively predicted disclosure efficacy; closeness predicted anticipated response (i.e., provision of support) although it did not influence disclosure efficacy; disclosure efficacy led to reduced planning, with planning leading to scheduling. Study 2 demonstrated that when information was considered to be intimate, it negatively influenced disclosure efficacy. Unlike the model with stigma (Study 1), closeness positively predicted both anticipated response and disclosure efficacy. The rest of the hypothesized relationships showed a similar pattern to Study 1: disclosure efficacy reduced planning, which then positively influenced scheduling. Implications of understanding stages of planning for stigmatized information are discussed. 相似文献
554.
Theory-based interventions can enhance people’s safe water consumption, but the sustainability of these interventions and the mechanisms of maintenance remain unclear. We investigated these questions based on an extended theory of planned behaviour. Seven hundred and ten (445 analysed) randomly selected households participated in two cluster-randomised controlled trials in Bangladesh. Study 1 promoted switching to neighbours’ arsenic-safe wells, and Study 2 promoted switching to arsenic-safe deep wells. Both studies included two intervention phases. Structured interviews were conducted at baseline (T1), and at 1-month (T2), 2-month (T3) and 9-month (T4) follow-ups. In intervention phase 1 (between T1 and T2), commitment-based behaviour change techniques – reminders, implementation intentions and public commitment – were combined with information and compared to an information-only control group. In phase 2 (between T2 and T3), half of each phase 1 intervention group was randomly assigned to receive either commitment-based techniques once more or coping planning with reminders and information. Initial well-switching rates of up to 60% significantly declined by T4: 38.3% of T2 safe water users stopped consuming arsenic-safe water. The decline depended on the intervention. Perceived behavioural control, intentions, commitment strength and coping planning were associated with maintenance. In line with previous studies, the results indicate that commitment and reminders engender long-term behavioural change. 相似文献
555.
Mengsi Xu Zhiai Li Junhua Zhang Lijing Sun Lingxia Fan Qinghong Zeng Dong Yang 《Asian Journal of Social Psychology》2015,18(3):199-208
Using three experiments, the present study investigates the impact of social exclusion on attention. Specifically, we investigate whether social exclusion promotes attentional bias to social acceptance cues (smiling faces) or social exclusion cues (angry faces) among an Asian population. The Cyberball game was adopted to manipulate social inclusion or exclusion, and a dot‐probe task was used to measure individuals' responses to smiling or angry faces. In Experiments 1 and 2, each trial consisted of either a smiling or angry face that was paired with a neutral face. In Experiment 1, when the stimulus onset‐asynchronies (SOA) were 500 ms, the inhibition of return emerged, indirectly indicating that social exclusion promotes sensitivity to social acceptance cues. In Experiment 2, after setting the SOA to 200 ms, we found that social exclusion promotes attentional bias to smiling faces compared to neutral faces. In Experiment 3, both smiling and angry faces were shown during each trial, and we found that social exclusion promotes attentional bias to smiling faces compared to angry faces. Therefore, the present study extends our understanding of the relationship between social exclusion and attention. Overall, it appears that after social exclusion, the desire for social reconnection trumps the desire to avoid social exclusion. 相似文献
556.
Claudia Scorolli Antonello Pellicano Roberto Nicoletti Sandro Rubichi Umberto Castiello 《Cognitive Science》2015,39(5):972-991
Choice reaction tasks are performed faster when stimulus location corresponds to response location (Simon effect). This spatial stimulus–response compatibility effect affects performance at the level of action planning and execution. However, when response selection is completed before movement initiation, the Simon effect arises only at the planning level. The aim of this study was to ascertain whether when a precocious response selection is requested, the Simon effect can be detected on the kinematics characterizing the online control phase of a non‐ballistic movement. Participants were presented with red or green colored squares, which could appear on the right, left, above, or below a central cross. Depending on the square's color, participants had to release one of two buttons (right/left), then reach toward and press a corresponding lateral pad. We found evidence of the Simon effect on both action planning and on‐line control. Moreover, the investigation of response conflict at the level of previous trials (i.e., n?1), a factor that might determine interference at the level of the current response, revealed a conflict adaptation process across trials. Results are discussed in terms of current theories concerned with the Simon effect and the distinction between action planning and control. 相似文献
557.
Escalation of commitment to a failing course of action is a problem in behavioral decision making that occurs across a wide range of social contexts. In this research, we show that examining escalation of commitment from a goal setting theory perspective provides fresh insights into how goal difficulty influences escalation of commitment. Specifically, through a series of two experiments, we found a curvilinear relationship between goal difficulty and post‐feedback goal commitment, which was mediated by valence and expectancy associated with goal attainment. In turn, it is commitment to goals that leads individuals to continue a previous course of action despite negative feedback. Copyright © 2014 John Wiley & Sons, Ltd. 相似文献
558.
Royce A. Francis Cassandra Reyes‐Jones 《Journal of Multi-Criteria Decision Analysis》2014,21(3-4):125-138
The purpose of this paper is to describe the development of a multi‐criteria decision analysis approach that can be used to circumscribe the definition of sustainability within an organization or institution with multiple operational divisions. Although our overall definition of sustainability is a process, the George Washington University (GW) definition of water sustainability is articulated through construction of an objective‐value hierarchy representing GW's strategic objectives and articulation of strength of preference among the attributes in that hierarchy. This study used multi‐criteria decision analysis methods, including structured interviews with four individual stakeholders and swing weighting. Three findings are of note. First, our stakeholders' thinking about their objectives was greatly influenced by perceived constraints and mandatory obligations on institutional performance implied by contracts or tradition. Second, in considering the trade‐off weights obtained from the swing‐weighting portion of the value assessment, all stakeholders placed similar emphasis on each of the fundamental objectives. Third, because of the decentralized nature of the university, the process through which the value assessment will be achieved must be transparent and accepted by each of the stakeholders supporting sustainability decisions. This case study illustrates a decision‐analytic sustainability approach that may be applied to large‐scale infrastructure systems, stakeholder engagement and negotiation in sustainability investments or alternatives assessments. Although the commitment to reduce climate impacts has been widespread, there have been fewer publicly announced water initiatives at the university level. At the university level, GW is only one of a handful of universities with a cohesive, visible, water plan. In addition, we demonstrate an approach in which explicit structuring of fundamental sustainability objectives may increase transparency for sustainability definition construction. Copyright © 2014 John Wiley & Sons, Ltd. 相似文献
559.
通过两个样本调查,对目标取向和工作经验量表进行了结构检验,并探讨了目标取向和工作经验对个体绩效的效应模式。结果表明：学习目标取向和工作经验定性成份与绩效间存在中等程度相关;在控制了人口统计学变量的效应后,学习目标取向对绩效具有显著的预测效应;工作经验定性成份与绩效间的关系受到学习目标取向缓冲,在学习目标取向低分组,工作经验定性成份对个体绩效更具预测力 相似文献
560.