网络谣言对消费者电商平台信任的作用机理研究     

万君  郭婷婷  吴正祥 《现代情报》2015,35(5):35-40

根据信任的特点,将消费者电商平台信任划分为认知信任和情感信任两个维度,构建了网络谣言影响消费者电商平台信任的概念模型,提出了假设,通过实证分析对假设进行了验证。结果表明网络谣言的内容特性、交互性和传播介质正向影响认知信任,信息环境负向影响情感信任,交互性、意见领袖和传播介质正向影响情感信任,认知信任和情感信任直接制约着消费者电商平台的使用意愿。  相似文献   

Repulsion-based model for contact angle saturation in electrowetting     

Hassan Abdelmoumen Abdellah Ali  Hany Ahmed Mohamed  Mohamed Abdelgawad 《Biomicrofluidics》2015,9(1)

We introduce a new model for contact angle saturation phenomenon in electrowetting on dielectric systems. This new model attributes contact angle saturation to repulsion between trapped charges on the cap and base surfaces of the droplet in the vicinity of the three-phase contact line, which prevents these surfaces from converging during contact angle reduction. This repulsion-based saturation is similar to repulsion between charges accumulated on the surfaces of conducting droplets which causes the well known Coulombic fission and Taylor cone formation phenomena. In our model, both the droplet and dielectric coating were treated as lossy dielectric media (i.e., having finite electrical conductivities and permittivities) contrary to the more common assumption of a perfectly conducting droplet and perfectly insulating dielectric. We used theoretical analysis and numerical simulations to find actual charge distribution on droplet surface, calculate repulsion energy, and minimize energy of the total system as a function of droplet contact angle. Resulting saturation curves were in good agreement with previously reported experimental results. We used this proposed model to predict effect of changing liquid properties, such as electrical conductivity, and system parameters, such as thickness of the dielectric layer, on the saturation angle, which also matched experimental results.  相似文献   

基于工程实训的高等制药工程专业课程体系的改革与创新     

万春杰  张珩  王凯  张秀兰 《中国现代教育装备》2015,(1):58-60

以培养和提高学生的工程实践能力与创新精神为核心,打造应用型制药工程专门人才为目标,对工程实训的教学理念、教学方式与教学内容做出了全面的改革和实践探索。构建了以就业为导向、以能力为根本的实训课程体系,并对工程实训中的教学改革思路与方案以及所采取的措施进行了探索研究。  相似文献   

安阳灵泉寺石窟档案艺术价值探析--以大住圣窟二神王图像为例     

李祎  彭红斌  万青 《山西档案》2015,(2):120-124

石窟档案是历史文化遗产和非纸质档案的特殊结合体,在我国古代历史档案中占据着非常重要的地位。安阳灵泉寺石窟是中国石窟体系中的重要代表,其中大住圣窟窟门两侧的"那罗延神王"与"迦毗罗神王"浮雕图像,造型精美,刻画精细,无论尺度和样式,均为国内石窟中罕见。本研究利用档案学的研究方法,从鸟翼冠、着装、脚踩神兽三方面对二神王图像的艺术价值进行分析,探讨其图像来源。  相似文献   

Antioxidants in aqueous extract of Myristica fragrans (Houtt.) suppress mitosis and cyclophosphamide-induced chromosomal aberrations in Allium cepa L. cells     

Akinboro A  Mohamed KB  Asmawi MZ  Sulaiman SF  Sofiman OA 《Journal of Zhejiang University. Science. B》2011,12(11):915-922

In this study, freeze-dried water extract from the leaves of Myristica fragrans (Houtt.) was tested for mutagenic and antimutagenic potentials using the Allium cepa assay. Freeze-dried water extract alone and its combination with cyclophosphamide (CP) (50 mg/kg) were separately dissolved in tap water at 500, 1000, 2000, and 4000 mg/kg. Onions (A. cepa) were suspended in the solutions and controls for 48 h in the dark. Root tips were prepared for microscopic evaluation. 2,2-Diphenyl-1-picrylhydrazyl (DPPH) free radicals’ scavenging power of the extract was tested using butylated hydroxyanisole (BHA) and butylated hydroxytoluene (BHT) as standards. Water extract of Myristica fragrans scavenged free radicals better than BHA, but worse than BHT. The extract alone, as well as in combination with CP suppressed cell division, and induced chromosomal aberrations that were insignificantly different from the negative control (P≤0.05). However, cytotoxic and mutagenic actions of CP were considerably suppressed. The observed effects on cell division and chromosomes of A. cepa may be principally connected to the antioxidant properties of the extract. The obtained results suggest mitodepressive and antimutagenic potentials of water extract of the leaves of M. fragrans as desirable properties of a promising anticancer agent.  相似文献   

用户生成性学习资源开发与利用:基于传播要素视角的调查与分析     

黄志芳  赵呈领  邢楠  万力勇  梁云真 《中国电化教育》2015,(2):57-64

随着Web2.0技术的兴起,用户生成性学习资源成为数字化学习资源开发与利用的新视角,对数字化学习资源建设产生了很大影响。本研究基于传播要素视角对用户参与开发利用生成性学习资源的动因和行为进行了调查分析。研究发现,用户由于受自身信息素养、兴趣爱好、平台资源类型和数量、资源的质量等因素的制约和影响,其开发和利用生成性学习资源的行为在驱动因素、参与频度、互动深度等多个维度呈现出不同的水平和特征。提高用户生成性学习资源的开发效率、开发质量和利用效果,应提高用户信息素养、激励用户积极参与、完善资源质量控制机制并建立有效的资源利用模式。本研究对于推动用户生成性学习资源的建设和发展,具有积极的理论意义和重要的实践指导价值。  相似文献   

吉林省高职院校单独招生考试方案构建与实施效应分析     

万家森  田雨涛  孙海波 《职业技术教育》2015,(14)

高等职业教育招生考试制度改革更具有务实性和前瞻性,各地单独招生考核方式灵活多样、各有特色。在吉林省高职高专院校单独招生考试改革试点工作中,吉林省招生委员会办公室委托长春职业技术学院起到带动、引领和示范作用。考核内容的确定成为高职院校单独招生考试方案的关键。吉林省在试点院校中开展单独招生考试选拔工作,考核方式推动了单独招生考试制度改革,实现了学生、学校的“双赢”。  相似文献   

网络多媒体环境下公安院校英语教学模式研究     

魏婉 《佳木斯教育学院学报》2015,(5)

如今大学各门学科都在进行现代化教学改革,网络多媒体教学已经成为当下高校教学改革的主流。网络多媒体教学丰富多彩的教学形式,立体化的课堂大大提高了教学效果。这对于培养学生自主与探究学习习惯具有重要意义。文本将对网络多媒体环境下的公安院校英语教学模式进行一番探讨,以期为深化大学英语教学模式改革提供一点思考方向与视角。  相似文献   

关联理论视角下的广告翻译     

Wan Cheng-hui 《佳木斯教育学院学报》2015,(4)

关联理论使得广告在翻译时借助于不同文化的某种共性,迎合了不同受众人群的口味,同时也起到了良好的宣传效果。文章首先对关联理论和广告翻译分别进行了阐述和分析,进而将关联理论应用于广告中所体现出的具体作用进行了介绍,最后结合具体的实例来表现关联理论的实际表达效果。  相似文献   

论方贞观清寒诗风的形成     

刘婉 《太原大学学报》2015,(1):77-80

清代诗人方贞观,作为桐城方氏文化的继承者,即使深受《南山集》案的影响,依旧诗文不辍。作为方氏一员,他的诗歌在学习孟郊诗风的基础上,描写秋景,书写真情和闲居生活,展现着自己的清寒诗风。  相似文献