www.sciencemag.org (this information is current as of August 7, 2009 ): The following resources related to this article are available online at http://www.sciencemag.org/cgi/content/full/321/5895/1472 version of this article at: including high-resolution figures, can be found in the online Updated information and services, http://www.sciencemag.org/cgi/content/full/321/5895/1472/DC1 can be foun...

http://www.sciencemag.org/cgi/content/full/307/5713/1226 version of this article at: including high-resolution figures, can be found in the online Updated information and services, http://www.sciencemag.org/cgi/content/full/307/5713/1226/DC1 can be found at: Supporting Online Material found at: can be related to this article A list of selected additional articles on the Science Web sites http:/...

http://www.sciencemag.org/cgi/content/full/318/5850/629 version of this article at: including high-resolution figures, can be found in the online Updated information and services, http://www.sciencemag.org/cgi/content/full/318/5850/629/DC1 can be found at: Supporting Online Material found at: can be related to this article A list of selected additional articles on the Science Web sites http://w...

Introduction. We estimate the total yearly volume of peerreviewed scientific journal articles published world-wide as well as the share of these articles available openly on the Web either directly or as copies in e-print repositories. Method. We rely on data from two commercial databases (ISI and Ulrich's Periodicals Directory) supplemented by sampling and Google searches. Analysis. A central ...

Methods We aimed to measure multiple indicators of impact for methodological research projects conducted or completed at the UK Medical Research Council Clinical Trials Unit (CTU) from 2009-2012. Publication citation rates were obtained using ISI Web of Science. Email queries generated by these projects were recorded retrospectively. Semi-structured interviews were conducted with CTU methodolog...

The evolution of vocabulary in academic publishing is characterized via keyword frequencies recorded in the ISI Web of Science citations database. In four distinct case-studies, evolutionary analysis of keyword frequency change through time is compared to a model of random copying used as the null hypothesis, such that selection may be identified against it. The case studies from the physical s...

purpose: the aim of present study was the comparative evaluation of content and support quality of iranian academic libraries websites’ and provide recommendations to improve them.methodology: this study is an applied research and methodology was comparative survey. data gathering tools were three checklists extracted from relevant studies which compare with 5 foreign library websites, and thei...

Background & Aims of the Study: Fatigue is one of the most important issues relating with safety and other aspects of human life. To understand fatigue and its relative factors and causes, there is a need to useful instruments, such as self-reported scales. The purpose of this study is to identify and present useful self-reported scales to measure fatigue. Materials & Methods: Data were extrac...