When the English philosopher Herbert Spencer introduced the phrase “survival of the fittest” in 1864, he could not have imagined that it would summarize the plight of young scientists years later (1). As competition for coveted faculty appointments and research funding continues to intensify, today’s researchers face relentless pressure to publish in scientific journals with high impact factors...

background :traffic and transport is a substantial part of a range of economic, social and environmental factors distinguished to have impact on human health. this paper is a report on a preliminary section of a health impact assessment (hia) on urban traffic and transport initiatives, being conducted in sanandaj, iran. in this preliminary study, the psychometric properties of urban traffic rel...

مقدمه:امروزه تعدد و کیفیت نامعلوم مجلات حیطه‏های مختلف علوم پزشکی، پژوهشگران را در انتخاب مجله مناسب برای انتشار نتایج تحقیقات علمی سردرگم کرده است. شاید معیارهای سنجش کیفیت مجلات بتوانند این مشکل را تا حدودی حل کنند؛ لذا مطالعه حاضر با هدف بررسی کیفیت مجلات حوزه‏ زنان و مامایی بر اساس شاخص‏های رتبه‏بندی مجلات در پایگاه‏های اطلاعاتی معتبر انجام شد. روش کار: این مطالعه به صورت توصیفی تحلیلی و به...

introduction: today, huge quantity of medical journals with indescribable quality, have confused health researchers while choosing a suitable journal to publish their scientific results. it seems that quality measuring criteria of journals could have solved this problem to some extent. in this study, we studied quality of journals of obstetrics and gynecology field indexed in the valid database...

this study investigates correlation between journal self – citation and impact factor in agriculture and veterinary subject category through the scientific journals indexed in isc's pjcr during 2001 to 2007. citation analysis is used to conduct the research. the results indicate a significant correlation between impact factor and journal self – citation (r=0.425, sig= 0.000); that is, journals ...

The application of currently available sophisticated algorithms of citation analysis allows for the incorporation of the "quality" of citations in the evaluation of scientific journals. We sought to compare the newly introduced SCImago journal rank (SJR) indicator with the journal impact factor (IF). We retrieved relevant information from the official Web sites hosting the above indices and the...

In this paper we show that the measure of diffusion introduced by Ian Rowlands called the Journal Diffusion Factor (JDF) is highly negatively correlated with the number of citations, leading highly cited journals to get a low JDF, whereas less cited journals gets a high JDF. This property reduces the utility of the JDF as a tool for evaluation of research influence. We present a new definition ...

I applaud the ASM for the decision to put their head above the parapet and cast aside the essentially meaningless metric of journal impact factor (IF). What began as a measure intended to allow quantitative evaluation of the importance of journals, IFs have virtually consumed all other (often more relevant) considerations regarding quality of publication. Ironically, for many of the scientists ...