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.     

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。     

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。     

Weak information work in scientific discovery

Scientists continually work with information to move their research projects forward, but the activities involved in finding and using information and their impact on discovery are poorly understood. In the Information and Discovery in Neuroscience (IDN) project we investigated the information work involved as researchers make progress and confront problems in the practice of brain research. Through case studies of recent neuroscience projects, we found that the most difficult and time-consuming information activities had parallels with Simon’s explication of weak methods in scientific problem solving. But, while Simon’s weak/strong distinction is an effective device for interpreting information work, his general conception of how discovery takes place is artificially constrained. We present cross-case and case-based results from the IDN project to illustrate how the conditions of problem solving Simon associated with weak methods relate to information work and to identify additional weak aspects of the research process not considered by Simon. Our analysis both extends Simon’s framework of what constitutes the discovery process and further elaborates how weak approaches influence the conduct of research.