Examining public acquisition of science knowledge from social media in Singapore: an extension of the cognitive mediation model

This study extends the cognitive mediation model (CMM) by examining the role of social media in cultivating public science knowledge. A sample of 901 Singaporeans was collected through an online survey panel. The results showed that the CMM could be applied to a social media context with a focus on science literacy. Specifically, the findings indicated that people with higher levels of surveillance gratification and social utility motivations tended to pay more attention and to elaborate more about science news that they encounter on social media. Likewise, people with greater social utility motivation tended to engage in greater interpersonal discussions on social media. Notably, attention to news on social media had an indirect association with science knowledge through news elaboration and interpersonal discussion on social media. Implications for theory and practice for science communication were discussed.     

反真实材质在三维教学动画中的应用探索

计算机三维动画在中小学及高校的学科教学中发挥着重要的作用,以往的教学三维动画的画面大多采用写实的风格,随着技术的发展,出现了反真实(卡通型)材质,它突出简约的色彩层次和鲜明的轮廓线条,为创作二维动画风格的三维动画提供了条件。本文探讨的就是如何利用反真实(卡通)材质的特点,设计风格新颖的教学动画。     

一类马氏过程的大偏差

讨论了{（X^ε（t）,Z^ε（t））;ε〉0,t∈[0,T]}的大偏差性质,X^ε（t）满足下面的随机微分方程： dX^ε（t）=√εσ（X^ε（t））dB（t）＋b（X^ε（t）,Z^ε（t））dt Z^ε（t）为有限个状态的随机过程．     

Cognitive distortions and autonomy among Chinese university students

The purpose of this study was to examine the roles of university students' cognitive distortions in their sense of autonomy. One hundred and three third-year university students from Shanghai, The People's Republic of China, responded to the Cognitive Distortion Scales [Briere, J. (2000). Cognitive Distortion Scales: Professional manual. Lutz, FL: Psychological Assessment Resources, Inc.] and to the Iowa Developing Autonomy Inventory [Jackson, L. M., Hood, A. B. (1985). The Iowa Developing Autonomy Inventory. In A. B. Hood (Ed., 1997), The Iowa student development inventories (2nd Ed), (pp. 32–43). Iowa City, IA: HITECH Press]. Results suggested that in general, cognitive distortions have a significantly negative impact on Chinese students' sense of autonomy. However, there was also an indication that cognitive distortions could play the roles of psychological defense mechanisms, which provided some support to Bowins' [Bowins, B. (2004). Psychological defense mechanisms: A new perspective. American Journal of Psychoanalysis, 64 (1), 1–26] recent argument that cognitive distortions may not always be dysfunctional. Implications of the present findings are discussed in relation to students, faculty members, and university counselors.     

论世界历史整体的复杂性

复杂性是世界历史整体的基本属性之一,主要表现在世界历史本身所具有的自组织性、各种过程的交叉融合、关联因素的不断增加以及发展路向的不确定性等。文章运用复杂学的理论范式和方法,把世界历史整体当作一个复杂巨系统来进行研究,揭示了世界历史整体的复杂性的一般特征,试图对世界历史整体的复杂性有一个更加科学、更加清晰的认识。     

新农村建设的社会资本路径探析

社会资本意指普通公民的民间参与网络,以及体现在这种约定中的公共精神、社会舆论和互惠规范,它通常被理解成结构型和认知型源泉之间的某种组合。结构型社会资本和认知型社会资本通过不同的作用机制推动新农村建设的进程。乡村社会资本因其公共物品性面临供给和投资不足的困境,乡镇政府应当承担起投资乡村社会资本的责任。     

英语词缀的语法化研究

语法化研究语法形式来源和固化的问题,是语言学家长期关心的问题。认知语言学对语法化研究非常重视。词缀作为词汇扩展演化的重要工具,反映了人类语言词汇的重要特征,从语言认知加工的角度来看．词缀有利于语言的使用者以较小的认知能量获取较大的认知效益。     

基于工作过程的秘书写作教学观

基于工作过程的秘书写作教学是一种融教学过程和写作过程于一体的新型秘书写作教学方法。它要求按秘书成长规律和工作实际确定教学内容,按工作过程设计、组织情境教学,并构建与之一致的教学评价体系。     

A cross-layer design approach on spectrum allocation and resource scheduling in cognitive PMP networks

We propose the spectrum allocation and resource scheduling algorithms in cognitive point to multipoint （PMP） networks with rapid changes of spectrum opportunities and present a media access control （MAC） protocol based on these algorithms. The objective of spectrum allocation is to make efficient use of the spectrum while maintaining the transceiver synchronization on frequency and time in the network. The objective of resource scheduling is to guarantee the quality of service （QoS） requirements of different kinds of connections and to minimize the total energy consumption in the network as well. By sensing only a small set of possible channels in each slot based on the state transition probability of each channel, our spectrum allocation algorithm achieves high spectrum efficiency in the network. The resource scheduling problem is divided into three sub problems and we derive optimal solutions to these problems by greedy algorithm and convex optimization. The simulation results show that our algorithm can make efficient use of the spectrum and the network resources at a cost of low computational complexity.     

当前认知科学背景下幽默言语理论研究述评

从语义脚本、概念复合论等四大视角宏观勾勒认知领域幽默言语理论研究基本现状,同时也分析其中微观问题,认为幽默语义跃迁过程中隐含着被忽略的＂释话＂过程;而会话幽默中的共同心理预设实际上即是人们以知识结构的方式形成的趋同的社会心理默契。