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91.
[目的/意义] 泛在信息环境下,云内的共享性、个性化服务过程及泛在接入使得用户的隐私威胁不断加大,探索用户感知威胁的削弱因素及应对策略,将有助于解析泛在信息环境下用户自身复杂的信息保护行为,促进云存储服务的进一步发展和规模化应用。[方法/过程] 结合心理学中的乐观偏差及应对理论,基于削弱因素--感知威胁--应对策略的研究逻辑,从乐观偏差、使用经验、官方认证3个维度分析对云存储用户感知威胁的不同影响,并验证乐观偏差对感知威胁到应对策略的调节作用。通过在线问卷调查,采用偏最小二乘法对结构模型进行估计。[结果/结论] 研究发现,使用经验、乐观偏差负向影响感知威胁,而官方认证的作用并不显著。此外,乐观偏差会负向调节感知威胁与问题应对之间的关系,但不会影响其与情绪应对的关系。研究结果可有助于揭示云储存用户感知威胁与应对策略的发生规律及内在机理,并为云服务提供商的风险管控以及国家工信部门的监管政策提供建议和参考。  相似文献   
92.
This experimental study examined the effects of an instructor’s face threat mitigation tactics on student self-efficacy for learning and perceived emotional support from the instructor in a written feedback setting. Participants (N = 401) were randomly assigned to one of two feedback scenarios in which level of face threat was manipulated. Student feedback anxiety was measured prior to being exposed to the feedback scenario. Results indicate that high face threat mitigation is positively associated with student self-efficacy for learning and perceived emotional support from the instructor. Results also revealed that feedback anxiety predicts lower self-efficacy for learning and less perceived emotional support from the instructor. Implications regarding theory, the measurement of feedback apprehension, and student–instructor communication are discussed.  相似文献   
93.
敲诈勒索罪的手段是敲诈勒索罪客观要件的一个重要构成要素。关于敲诈勒索罪的手段也是刑法理论界和实务界争议的焦点之一。我国刑法理论界的通说认为,敲诈勒索罪的手段主要是威胁或要挟。但有的学者认为除了威胁或要挟之外,还应包括暴力手段。下面笔者将从比较研究关于敲诈勒索罪手段的规定、当场实施暴力能否成为敲诈勒索罪的手段、敲诈勒索罪的其他具体手段等3个方面展开论述。  相似文献   
94.
There are ethnic group differences in academic achievement among Australian students, with Aboriginal students performing substantially below and Asian students above their peers. One factor that may contribute to these effects is societal stereotypes of Australian Asian and Aboriginal students, which may bias teachers’ evaluations and influence student outcomes. A questionnaire assessing academic expectancies for hypothetical students from different ethnic groups was administered to 55 experienced teachers and 144 training teachers. A measure of self-expectancies and group expectancies was administered to 516 school students. The findings revealed that Asian students were expected to perform better in mathematics and expend greater effort than Aboriginal and Anglo-Australian students. In turn, there were higher expectancies for mathematics performance for Anglo-Australian students compared with Aboriginal students. We discuss the potential implications of these stereotypes for students’ school achievement, particularly the risk that negative implicit stereotypes might result in these students being directed to special education.  相似文献   
95.
在无线传感器网络中,入侵检测因能够识别恶意节点和潜在的网络攻击,以及在恶劣条件下控制检测数据的质量,从而进一步提高无线传感器网络的安全性.在分析影响入侵检测方法设计的关键因素基础上,对现存的主要入侵检测方法进行了归纳与评估,并指出了一些需要解决的问题和将来可能的研究方向.  相似文献   
96.
信息防护是人民防空安全防护的重要组成部分,涉及的内容广泛,是一项系统工程,包括物理层安全、系统层安全、网络层安全和管理层安全等.  相似文献   
97.
校园网络在运行中不断受到各种安全威胁,其安全问题是大中小学的网络管理部门都关注的问题。本文从总体角度分析了校园网络存在的安全问题和安全方面的需求,并提出了若干对策,希望能对有关部门管理网络起到一些借鉴作用。  相似文献   
98.
This paper examines how personal investment influence the use of multi-factor authentication (MFA) for securing online accounts. We draw from the Protection Motivation Theory (PMT) that accounts for intrapersonal factors that increase one’s understanding of their threat and coping mechanisms and, subsequently, their motivation to protect such investments. We integrate size of investment – the amount of time, effort, and other personal resources that an individual has put into their online account. Based on PMT’s framework, we develop a research model that examines the influence of investment size as an information source that initiates and builds threat and coping appraisals. The model is tested with a survey of 263 responses, and the result shows that investment size influences threat and coping appraisals, which in turn increases MFA protection motivation and use. These results highlight the importance of eliciting individuals’ personal investments in order to improve their protective security behaviors.  相似文献   
99.
We examined the relationship between perceived group threats and citizens’ negative outgroup attitudes toward migrant workers using nationally representative survey data (N = 1219) collected from 13 cities across seven Chinese provinces. Additionally, we examined the relationship between intergroup contact and citizens’ negative outgroup attitudes toward migrant workers and assessed whether these relationships varied by cultural region and stereotypes. The results showed that perceived group threat was associated with citizens’ negative outgroup attitudes toward migrant workers. However, the strength of their relationships decreased significantly in southern cities. The results also showed that contact with migrant workers in general and in the workplace were negatively related to citizens’ negative outgroup attitudes toward them. However, it was noted that contact with migrant workers in general would be less effective when implemented in cities, where citizens hold more negative stereotypes toward migrant workers. The findings suggest that negative outgroup attitudes also exist in internal migration, especially in places with high individualism. Intergroup contact, especially contact in the workplace, is an effective strategy for enhancing group integration.  相似文献   
100.
Cultural globalization affects most people around the world in contemporary, modern societies. The resulting intercultural contact have been examined using the theory of globalization-based acculturation. However, little is known about possible differences and similarities in processes underlying the effects of direct (e.g., through contact with immigrants) and indirect (e.g., engagement with cultural elements through media) forms of new cultural exposure. Drawing on the contact hypothesis, social identity theory, and symbolic threat theory, we examined whether perceived intercultural threat and local and global identities would explain whether both forms of contact result in multicultural acquisition or in ethnic protection. In Study 1 (N = 402), indirect, but not direct, intercultural contact was positively associated with multicultural acquisition; and both types of intercultural contact were negatively linked with ethnic protection. Global identity significantly mediated the association of both direct and indirect intercultural contact with both multicultural acquisition and ethnic protection, whereas perceived cultural threat only significantly mediated the associations of direct intercultural contact with multicultural acquisition and ethnic protection. In Study 2 (N = 424), higher levels of ethnic protection, and lower levels of multicultural acquisition, emerged in the experimental group primed with indirect, versus direct, intercultural contact. Furthermore, intercultural threat was negatively, and global identity positively, associated with multicultural acquisition, while intercultural threat was positively, and global identity negatively, associated with ethnic protection. Results are discussed in relation to similarities and differences across direct and indirect intercultural contact, providing a nuanced understanding of contemporary intercultural contact and globalization-based acculturation among majority populations.  相似文献   
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