高科技企业创新生态系统风险产生机理探究

 由高科技企业在全球范围内形成的基于模块的知识异化、共存共生、共同进化的创新生态系统具有合作共赢性、系统复杂性、技术标准化、技术模块化等本质特征,引发了传统R&D项目管理风险以外的依赖性风险、结构性风险、专用性资产投资风险、信息不对称风险、资源流失风险、收益分配风险等六种典型的合作风险,其风险产生机理区别于传统意义上的企业集群、虚拟企业、企业动态联盟、集群式供应链、地域性工业园区。     

The discovery of element 108

The natural elements end with uranium (Z = 92), but a number of transuranium elements have been synthesized either by bombarding the heaviest elements with neutrons or, during the last decade, by fusion of the nuclei of lighter elements. The latter has made possible the synthesis of element 108 by ‘cold’ fusion of iron 58 and lead 208. Element 108 is unexpectedly stable and suggests the feasibility of eventually preparing the elusive superheavy elements.     

College students’ credibility judgments and heuristics concerning Wikipedia

This study examined: (1) whether a peripheral cue and subject knowledge influenced the credibility judgments in the context of Wikipedia; and (2) whether certain factors affected heuristic processing in the context of Wikipedia. The theory of bounded rationality and the heuristic-systematic model serve as the basis of this study. Data were collected employing a quasi-experiment and a web survey at a large public university in the Midwestern United States in the fall of 2011. The study participants consisted of undergraduate students from nine courses whose instructors agreed to their participation. A total of 142 students participated in the study, of which a total of 138 surveys were useable. The major findings of this study include the following: a peripheral cue and knowledge influenced the credibility judgments of college students concerning Wikipedia. The effect of a peripheral cue on credibility judgments was not different between those with high versus low knowledge. Finally, perceived credibility was positively related to heuristic processing, but knowledge, cognitive workload or involvement in a topic was not. This study suggests that educators and librarians need to integrate heuristic approaches into their literacy programs, guiding students to effectively use and not blindly accept cues. Wikipedia needs to offer noticeable cues that can help Wikipedia readers assess the credibility of information. The role of perceptions in heuristic processing needs further investigation. Further, this study demonstrates the strength of a peripheral cue on credibility judgments, suggesting that further research is needed when cues lead to effective credibility judgments and when cues lead to biased credibility judgments. Finally, this study provides the suggestion of an integrated model of the theory of bounded rationality and the heuristic-systematic model that can enhance our understanding of heuristics in relation to credibility judgments.     

子宫内膜异位症并不孕发生机制的研究

子宫内膜异位症(EMT)是一种女性生殖系统常见的良性疾病,但因其具有侵袭性和易复发性等临床特点,现已受国内外众多学者的重视及探究。内异症对子宫内膜、卵巢、神经内分泌、机体免疫系统的影响,最终导致不孕的发生。近年来,随着科学科技的发展,已从细胞学、分子生物学、基因遗传学等多方面对EMT有进一步的研究。文章从卵泡发育、子宫内膜代谢、盆腔微环境、细胞免疫学、炎症反应等方面阐述其与不孕的关系。     

The Deep-Time Digital Earth program: data-driven discovery in geosciences

Current barriers hindering data-driven discoveries in deep-time Earth (DE) include: substantial volumes of DE data are not digitized; many DE databases do not adhere to FAIR (findable, accessible, interoperable and reusable) principles; we lack a systematic knowledge graph for DE; existing DE databases are geographically heterogeneous; a significant fraction of DE data is not in open-access formats; tailored tools are needed. These challenges motivate the Deep-Time Digital Earth (DDE) program initiated by the International Union of Geological Sciences and developed in cooperation with national geological surveys, professional associations, academic institutions and scientists around the world. DDE’s mission is to build on previous research to develop a systematic DE knowledge graph, a FAIR data infrastructure that links existing databases and makes dark data visible, and tailored tools for DE data, which are universally accessible. DDE aims to harmonize DE data, share global geoscience knowledge and facilitate data-driven discovery in the understanding of Earth''s evolution.     

云计算技术在证券行业的应用探索

随着云计算时代的到来以及证券行业创新业务的不断推出,在经历了由以通道向服务的转变之后,目前正处于向以客户为中心的管理理念的转变,如何赢得客户、并获得客户的持久信赖已成为证券公司考虑的核心问题。本文将从虚拟化、云存储、联盟云等方面简要阐述云计算技术在证券行业的应用探索。     

碳纳米管的生长机理

目前,对于碳纳米管成核及生长机理依然理解不充分,文章描述了碳纳米管在电弧蒸发法及激光蒸发法的生长过程。许多早期的模型都是假设在生长过程中有气相现象,但是有一个实验证据表明多壁碳纳米管和单壁碳纳米管两者的形成都包含有一个固态的转换。而在促进纳米管生长的过程中,升温速率好像也是一个重要的因素。