专业虚拟社区的用户创新激励——基于社会网络分析

研究在专业虚拟社区中如何激励用户创新.提出专业虚拟社区成员创新的影响因素为社交需求、获得关注需求、自我实现需求以及社区联结程度;通过社会网络分析法识别意见领袖,并以意见领袖为中心构建成员网络关系,分为中间层、边缘层和意见领袖;基于成员网络关系,结合创新的影响因素分析成员创新行为产生的动机,并以MIUI社区为例进行实证分...     

网络嵌入、知识惯性与双元创新能力 ——基于动态视角的评述

[目的/意义]网络嵌入和知识惯性对提升企业创新能力具有重要影响。[方法/过程]通过文献分析,针对网络嵌入及其演化特征对知识惯性的影响、知识惯性对双元创新能力的影响以及网络嵌入对双元创新能力的影响进行了系统梳理和评述。[结果/结论]总结提炼了3点结论,并在此基础上就如何充分利用网络嵌入的演化特征来调节知识惯性与双元创新能力间的关系,从动态视角提出了整合性理论框架以及进一步的研究思路与展望,不仅对深化该领域的研究具有理论与方法启示,同时对我国企业在动态网络下有效整合网络嵌入和知识惯性、提升双元创新能力具有重要现实指导意义。     

Tagging and searching: Search retrieval effectiveness of folksonomies on the World Wide Web

Many Web sites have begun allowing users to submit items to a collection and tag them with keywords. The folksonomies built from these tags are an interesting topic that has seen little empirical research. This study compared the search information retrieval (IR) performance of folksonomies from social bookmarking Web sites against search engines and subject directories. Thirty-four participants created 103 queries for various information needs. Results from each IR system were collected and participants judged relevance. Folksonomy search results overlapped with those from the other systems, and documents found by both search engines and folksonomies were significantly more likely to be judged relevant than those returned by any single IR system type. The search engines in the study had the highest precision and recall, but the folksonomies fared surprisingly well. Del.icio.us was statistically indistinguishable from the directories in many cases. Overall the directories were more precise than the folksonomies but they had similar recall scores. Better query handling may enhance folksonomy IR performance further. The folksonomies studied were promising, and may be able to improve Web search performance.     

高职院校大学生创业教育实践与创新

创新教育既是实现高等教育跨越式发展的基本要求,也是建设创新型国家的迫切需要。通过构建“三位一体”创业教育体系的实践与创新,阐明高职院校开展创业教育的必要性,给出创业教育的基本内容,探讨创业教育的方法与途径。     

浅谈英语阅读教学中学生自主学习能力的培养

培养学生的自主学习能力是当前课程改革中关注学生发展的重要内容之一.<英语课程标准(实验稿)>明确提出"引导学生调整学习方式,提高他们的自主学习和合作学习的能力,使他们具有终身学习的能力".英语阅读教学是英语教学中的重点内容.因此,教师必须注重在阅读教学中培养学生的自主学习能力.     

巧用目录构建知识网络,提高政治课教学实效

现代认知结构心理学认为知识分为两大类:陈述性知识和程序性知识.政治课程中占很大比重的是陈述性知识.而陈述性知识的本质是语言文字或其他符号所表达的意义以网络结构的形式贮存在人脑中.构建知识的网络结构是知识贮存的编码过程,通过编码过程使学生能习得知识之间的内部和外部的联系,提高自主学习的能力.     

汉语情感语音的语料设计与韵律研究

在现代语音学的研究中,语音语料库的设计至关重要。本文着重讨论了汉语普通话情感语音的语料库设计与采集。首先我们对情感语音研究中往往混为一谈的“情绪”和“态度”在概念上做了严格的区分,然后采用角色扮演的诱导式方法,设计并采集了四种基本情绪和五个态度类的语音语料。在讨论了语音标注和韵律数据处理方法后,我们通过听辨实验考察了情感语音的感知特性,并通过声学分析着重探讨了各类态度语音的韵律特征。     

Games for boys: a qualitative study of experiences with commercial off the shelf gaming

Boys are less likely to receive praise and recognition for good schoolwork, to consider school important, and have fewer opportunities to do the things that they do best (Lopez and Calderon in How America’s boys become psychological dropouts. The gallup blog, 2013). Traditional school cultures have come in conflict with the normal and natural ways that boys behave. As a result, boys have had alienating experiences and high levels of disengagement and lowered academic success in school due to rejection of boy culture, which includes aggressive play, competition, and violent fantasy. The purpose of this study was to explore ways in which we can re-engage boys and enhance their learning opportunities in traditional classroom settings. Boys are drawn to video games, which offer a unique environment where they can engage in learning activities. By taking seriously the indigenous knowledge of this portion of boy culture, we may identify ways in which their expertise can become useful towards common learning goals (Carr-Chellman 2007; Carr-Chellman and Savoy 2004). The current analysis represents the first of a multiphase study that uses an interpretive lens within a CHAT framework to identify relevant learning in Commercial of the Shelf (COTS) games. This phenomenological design identifies learning accounts that map to the United States Common Core State Standards. Our findings suggest that engaged learning can occur for these boys as a result of playing games. COTS games engage boys in normal and natural ways, and consequently can be relevant learning tools that educators, researchers and instructional designers might employ toward traditional learning objectives.     

Resampling and Distribution of the Product Methods for Testing Indirect Effects in Complex Models

Recent advances in testing mediation have found that certain resampling methods and tests based on the mathematical distribution of 2 normal random variables substantially outperform the traditional z test. However, these studies have primarily focused only on models with a single mediator and 2 component paths. To address this limitation, a simulation was conducted to evaluate these alternative methods in a more complex path model with multiple mediators and indirect paths with 2 and 3 paths. Methods for testing contrasts of 2 effects were evaluated also. The simulation included 1 exogenous independent variable, 3 mediators and 2 outcomes and varied sample size, number of paths in the mediated effects, test used to evaluate effects, effect sizes for each path, and the value of the contrast. Confidence intervals were used to evaluate the power and Type I error rate of each method, and were examined for coverage and bias. The bias-corrected bootstrap had the least biased confidence intervals, greatest power to detect nonzero effects and contrasts, and the most accurate overall Type I error. All tests had less power to detect 3-path effects and more inaccurate Type I error compared to 2-path effects. Confidence intervals were biased for mediated effects, as found in previous studies. Results for contrasts did not vary greatly by test, although resampling approaches had somewhat greater power and might be preferable because of ease of use and flexibility.