Science Reference on the Internet

Summary

In the sciences, there is a wide assortment of information in electronic form and accessible to anyone with the computer communications, hardware, and software prerequisites. For those in search of literature citations, numerical values, commonly accepted facts, word-for-word of published text, and even sound reproductions and to some extent still or living images, the Internet-posted formats have much to offer. In this paper, especially useful or interesting Web sites for reference in any of the basic science fields are identified.     

Career Information and Salary Surveys

Abstract

The “Career Information and Salary Surveys” chapter provides an overview of important resources for locating career and salary information. Also included are comprehensive career Web sites.     

Best of the Web in Economics

Abstract

The economics chapter covers key resources from government, international, and working papers sites. There are also sections on reference sites and collections of economics links.     

Teenagers’ Experiences With Social Network Sites: Relationships to Bridging and Bonding Social Capital

Many studies have examined the relationship between social network sites (SNSs) and the development of social capital. However, most studies to date have only considered college and adult populations. This study examines the patterns of SNS use in an urban, teenage sample in the United States. It tests the hypothesis that use of SNSs is related to higher levels of social capital. The results show that youth who use Facebook and Myspace report higher social capital in both their school and online relationships. In addition, the analysis suggests that distinct modes of SNS experiences are differentially related to bridging and bonding social capital. Time spent in SNSs is related to bridging capital, while positive or negative experiences are related to bonding capital. The study offers new insights into how youth experience SNSs and the relationship of that experience with their connection to the world.     

DSLM Instructional Approach to Conceptual Change Involving Thermal Expansion

This article examines the process of students' conceptual change involving thermal expansion as a result of employing the Dual Situated Learning Model (DSLM) (She, 2001, 2002) as a classroom instructional approach. The dual situated learning events of this model are designed according to the students' ontological viewpoint of the science concepts as well as the nature of these concepts. Moreover, these events serve two functions in creating dissonance with the pre-existing knowledge and providing new schema for constructing a more scientific view of the concept. DSLM has been shown to promote students' conceptual change using one-to-one instructional procedure (She, 2002). This study further demonstrates that DSLM holds great potential to facilitate the conceptual change process involving thermal expansion through classroom instruction, even the difficult concept or higher hierarchical level one.     

浅谈网络新闻专题策划的三个问题

网络新闻专题是新闻网站常用的报道形式之一,不同的新闻事件需要采取不同的报道形式,其报道重点也各不相同。网络新闻专题策划需要考虑到网络新闻专题的用户体验,同时也要探究内容和栏目的拓展上的结构形态,以期获得最优的传播效果。     

彝语支民族婚姻家庭形态

彝语支民族婚姻家庭形态几乎涵盖了人类社会所经历的不同类型的婚姻家庭形态.有洪水神话传说中早期"血缘婚"的遗迹;有氏族外婚制的母系氏族"走婚"制婚姻家庭形态;有"兄弟共妻"和"姐妹共夫"婚姻家庭形态;有双系家庭;有"转房婚"和"抢婚"习俗.这些活化石似的婚姻家庭形态对探讨人类社会婚姻家庭的形成和发展有重要参考价值.     

电子商务网站分类符号理解的实验探索

电子商务网站想要吸引更多的用户,就必须让用户能顺利地在网上找到所需要的商品,而用户对网络界面符号体系的理解是其中重要的影响因素。运用相关理论对网络界面符号理解机制进行分析,在此基础上,针对电子商务网站分类体系,实验考察用户对需求概念表征的心智模型以及用户使用界面分类符号体系过程中认知语境的影响作用。     

基于美国《科学引文索引》分区的新系数算法对不同学科间学术论文评价方法探讨

学术论文评价中不同学科间存在的差异一直是困扰科研机构进行论文质量评价的一个问题。因此,针对不同学科间的学术期刊建立一种兼顾科学性与实操性的评价方法显得尤为重要。基于此,我们以中科院SCI分区为基础,通过最高系数、基准系数调整计算P值,减小因学科分布不均导致的评价差异,建立了一种科学的评价方法。该方法可以有效地纠正不同学科期刊间影响因子的差异,从而为科学公平地评价不同期刊、反映科研成果的价值提供了科学的评价方法。