نتایج جستجو برای: scopus

تعداد نتایج: 18953  

پایان نامه :دانشگاه آزاد اسلامی - دانشگاه آزاد اسلامی واحد علوم دارویی - دانشکده داروسازی 1394

افسردگی یکی از اختلالات شایع روانی است که ?? درصد مردم دنیا به آن مبتلا هستند. یافتن مکانیسم نورولوژیکی فعالیت ضدافسردگی فرآورده های گیاهی نقش تعیین کننده ای در گسترش داروهای طبیعی برای کنترل بیماری افسردگی دارد. هدف از این مطالعه؛ مروری بر مکانیسم های ضدافسردگی گیاهان دارویی و مشتقات آنهاست. برای این هدف، منابع الکترونیکی شامل cochraine libray ,scopus ,science direct ,pubmed از سال ???? تا اکت...

2013
Mirko Spiroski

MATERIAL AND METHODS: Affiliation search of the Scopus database was performed on November 23, 2014 in order to identify published papers from the Ss Cyril and Methodius University of Skopje (UC&M), Republic of Macedonia. A total number of 3960 articles (3055 articles from UC&M, 861 articles from Faculty of Medicine, UC&M, and 144 articles from Faculty of Pharmacy, UC&M) were selected for analys...

2016
Bashir S. Galadanci Maryam I. Mukhtar Sanah Abdullahi Muaz

Research outputs are among the key indices in the world ranking of universities. The focus of Nigerian universities, is teaching and research. This paper compares research outputs of Nigerian Federal Universities (NFU’s) based on their publication records in the Scopus database. It was found that University of Ibadan (UI) has the highest total number of research outputs more than other NFU’s. B...

Journal: :J. Informetrics 2016
Qi Wang Ludo Waltman

Journal classification systems play an important role in bibliometric analyses. The two most important bibliographic databases, Web of Science and Scopus, each provide a journal classification system. However, no study has systematically investigated the accuracy of these classification systems. To examine and compare the accuracy of journal classification systems, we BLOCKIN

Journal: :J. Informetrics 2013
Bo-Christer Björk David J. Solomon

Publishing in scholarly peer reviewed journals usually entails long delays from submission to publication. In part this is due to the length of the peer review process and in part because of the dominating tradition of publication in issues, earlier a necessity of paper‐based publishing, which creates backlogs of manuscripts waiting in line. The delays slow the dissemination of scholarship and ...

Journal: :Journal of Documentation 2008
Christoph Neuhaus Hans-Dieter Daniel

Purpose: To provide an overview of new citation-enhanced databases and to identify issues to be considered when they are used as data source for performing citation analysis. Design/methodology/approach: Reports the limitations of Thomson Scientific's citation indexes and reviews the characteristics of the citation-enhanced databases Chemical Abstracts, Google Scholar and Scopus. Findings: Sugg...

2013
Leili Zarifmahmoudi Hamid Reza Kianifar Ramin Sadeghi

OBJECTIVE(S) Citation tracking is an important method to analyze the scientific impact of journal articles and can be done through Scopus (SC), Google Scholar (GS), or ISI web of knowledge (WOS). In the current study, we analyzed the citations to 2011-2012 articles of Iranian Journal of Basic Medical Sciences (IJBMS) in these three resources. MATERIAL AND METHODS The relevant data from SC, GS...

Journal: :J. Informetrics 2018
Mike Thelwall Tamara Nevill

Altmetrics from Altmetric.com are widely used by publishers and researchers to give earlier evidence of attention than citation counts. This article assesses whether Altmetric.com scores are reliable early indicators of likely future impact and whether they may also reflect non-scholarly impacts. A preliminary factor analysis suggests that the main altmetric indicator of scholarly impact is Men...

2012
Antonio Pulgarín

The main aim of this paper was to examine whether the characteristics of the Lotka distribution of publications (in particular, the changes that the two parameters, n and c, undergo) constitute an indicator of the structure of influence in a scientific field. A quasi-experimental method was used to estimate the parameters of Lotka's law in a number of scientific areas (by means of a series of s...

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید