教育中的人工智能:应用、风险与治理研究     

王岚  王凯 《黑龙江高教研究》2020,(6):45-49

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因果要素关联视域下社交媒体倦怠用户画像模型构建   总被引：1，自引：1，他引：0  

张艳丰  彭丽徽  洪闯  刘金承  高凯 《图书情报工作》2019,63(14):94-100

[目的/意义]探究社交媒体倦怠的原因要素和结果要素标签，分析各要素间的相互作用关系，扩展用户信息行为的理论研究范畴，为企业深入了解用户社交媒体倦怠发展态势提供指导。[方法/过程]基于信息生态理论，提取"信息人、信息、信息环境和信息技术"4个信息生态因子维度的社交媒体用户画像标签；根据用户心理特征和行为表现，抽取用户画像情感和行为标签，构建社交媒体倦怠用户画像模型。[结果/结论]透过社交媒体用户消极使用和负面情感变化的典型社会现象，对用户画像模型进行整合分析与关系凝练，证明本研究社交媒体倦怠用户画像模型与S-S-O理论框架具有一致性，并根据实际进行理论上的拓展和应用。  相似文献   

对特种部队爆破训练的思考     

顾凯 《军事体育进修学院学报》2017,36(1)

爆破技术是分队作战中重要技能之一,且是一项高危课目;对其在军内外作战、训练中的应用进行了梳理、总结,分析了其存在不足,并提出了爆破技术未来发展的相应对策,为部队开展爆破技术训练提供参考.  相似文献   

Changes in kinematics and arm–leg coordination during a 100-m breaststroke swim     

Samuel W. Oxford  Rob S. James  Michael J. Price  Carl J. Payton  Michael J. Duncan 《Journal of sports sciences》2017,35(16):1658-1665

The purpose of this study was to compare arm–leg coordination and kinematics during 100 m breaststroke in 26 (8 female; 18 male) specialist breaststroke swimmers. Laps were recorded using three 50-Hz underwater cameras. Heart rate and blood lactate were measured pre- and post-swim. Arm–leg coordination was defined using coordination phases describing continuity between recovery and propulsive phases of upper and lower limbs: coordination phase 1 (time between end of leg kick and start of the arm pull phases); and coordination phase 2 (time between end of arm pull and start of leg kick phases). Duration of stroke phases, coordination phases, swim velocity, stroke length (SL), stroke rate (SR) and stroke index (SI) were analysed during the last three strokes of each lap that were unaffected by turning or finishing. Significant changes in velocity, SI and SL (P < 0.05) were found between laps. Both sexes showed significant increase (P < 0.05) in heart rate and blood lactate pre- to post-swim. Males had significantly (P < 0.01) faster swim velocities resulting from longer SLs (P = 0.016) with no difference in SR (P = 0.064). Sex differences in kinematic parameters can be explained by anthropometric differences providing males with increased propelling efficiency.  相似文献   

论英汉文学翻译中的语言美--兼议英汉翻译语体风格的转换     

肖宜宁  刘恺 《九江职业技术学院学报》2003,(4):60-61

本立足于翻译的标准和原则，结合笔的翻译实践，从语体角度阐述英汉翻译中的语言美现象。  相似文献   

高校辅导员在自媒体中的自我形象管理——基于新浪微博的调查     

任凯 《高校辅导员学刊》2016,(4):66-69

高校辅导员在新媒体微博形象中的形象管理重视程度差异较大、"职业形象"不够清晰、"专家形象"数量极少、"个人形象"缺乏鲜明特征等问题。高校辅导员可以从形象管理意识的觉醒、运用好形象管理中的理想化技术、做好微博内容管理和信息整合,成为"主题信息源"、加强和学生、辅导员同行以及专业人士的互动等四方面加以改善。  相似文献   

Reexamining Fear Appeal Models from Cognitive Appraisal Theory and Functional Emotion Theory Perspectives     

Jiyeon So  Kai Kuang  Hyunyi Cho 《Communication monographs》2016,83(1):120-144

Recognizing inconsistencies between the extant fear appeal theories and emotion literature, this research integrated cognitive appraisal theory and functional emotion theory into a fear appeal literature and proposed a model that describes a process through which both fear and anxiety can contribute to adaptive responses. Findings from an experiment (N = 927) supported the predictions. Fear and anxiety emerged as distinct constructs. Perceived susceptibility was a stronger predictor of anxiety than fear, while perceived severity was a stronger predictor of fear than anxiety. In addition, greater fear and anxiety led to greater response efficacy through increased motivation to obtain protection-related information and heightened attention to such information, thus mediating the threat and coping appraisal processes. The SEM model testing the predictions showed that perceived susceptibility had the strongest total effects on protection intention, followed by anxiety, perceived severity, and fear.  相似文献   

智慧城市信息安全风险评估模型构建与实证研究   总被引：1，自引：0，他引：1  

邹凯  向尚  张中青扬  毛太田 《图书情报工作》2016,60(7):19-24

[目的/意义] 面对智慧城市日益突出的信息安全问题,提出一个科学的风险评估模型,以快速对智慧城市进行风险分类并分析风险因素。[方法/过程] 从智慧城市信息安全的5个层次和风险评估的4个主要因素出发,构建智慧城市信息安全风险指标框架,对智慧城市实例进行ward系统聚类形成分类属性,选择C4.5算法的决策树方法建立风险评估模型,并验证模型的科学性。[结果/结论] 结果发现:安全管理制度、数据泄露与损坏威胁、安全意识薄弱性和设备安全漏洞是智慧城市之间差距最显著的风险因素,根据评估结果提出保障智慧城市信息安全的建议。  相似文献   

基于AGIL模型的德国足球青训系统功能分析     

宋凯  周丽君 《浙江体育科学》2016,(4):55-59

社会学大师帕森斯创造性地提出"AGIL模型",用来分析社会具体系统之结构与相应功能。AGIL模型指出任何一个系统都具备四种功能:适应功能、目标达成功能、整合功能与维模功能,这四种功能是任何社会系统及其子系统存在并实现稳定发展所不可缺少的要素。德国足球青训系统近些年成就斐然,基于AGIL模型,主要运用文献资料分析法,以系统四功能为分析重点,从社会学角度剖析其成功的深层次原因,以期为我国打造足球青训系统提供初步思路。  相似文献   

A comparison of the impacts of continuous and interval cycle exercise on perceived exertion     

Marcus W. Kilpatrick  Samuel J. Greeley  John M. Ferron 《European Journal of Sport Science》2016,16(2):221-228

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