Huan Yang, Fan Zhang, Aaron Zimmerman, and Yanbei Chen Theoretical Astrophysics 350-17, California Institute of Technology, Pasadena, California 91125, USA Perimeter Institute for Theoretical Physics, Waterloo, Ontario N2L2Y5, Canada Institute for Quantum Computing, University of Waterloo, Waterloo, Ontario N2L3G1, Canada Department of Physics, West Virginia University, P.O. Box 6315, Morgantow...

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...

Agricultural activity has always included adaptation to a number of diverse stresses and opportunities–elements that continue influencing developments in the agri-food sector. Climate and weather conditions are a good example of factors that require on-going adaptation. With climate change they take on even more significance. Based on data from Canadian producers, this article identifies severa...

*Department of Anatomy and Cell Biology, The University of British Columbia, Vancouver, British Columbia, Canada; †Canadian Institutes of Health Research Group in Skeletal Development and Remodeling, Department of Anatomy and Cell Biology, The University of Western Ontario, London, Ontario V6T 1Z3, Canada; and ‡Laboratory of Developmental Biology, National Heart, Lung and Blood Institute, Natio...

ATMOSPHERIC SCIENCES, NORTH CAROLINA STATE UNIVERSITY, RALEIGH, NC 27695, USA, KING ABDULLAH UNIVERSITY OF SCIENCE AND TECHNOLOGY, THUWAL 23955-6900, SAUDI ARABIA, SOUTHERN CALIFORNIA COASTAL WATER RESEARCH PROJECT, COSTA MESA, CA 92626, USA, 5 SCHOOL OF MARINE SCIENCES, UNIVERSITY OF MAINE, WALPOLE, ME 04573, USA AND CANADIAN CENTRE FOR DNA BARCODING, BIODIVERSITY INSTITUTE OF ONTARIO, UNIVERS...

Prayush Kumar, Ilana MacDonald, Duncan A. Brown, Harald P. Pfeiffer, Kipp Cannon, Michael Boyle, Lawrence E. Kidder, Abdul H. Mroué, Mark A. Scheel, Béla Szilágyi, and Anıl Zenginoğlu Department of Physics, Syracuse University, Syracuse, New York 13244, USA Canadian Institute for Theoretical Astrophysics, University of Toronto, Toronto, Ontario M5S 3H8, Canada Department of Astronomy and Astrop...

a Rotman School of Management and Department of Economics, University of Toronto, 105 St. George Street, Toronto, Ontario, M5S 3E6, Canada b Canadian Institute for Advanced Research (CIFAR), 180 Dundas Street West, Suite 1400, Toronto, Ontario, M5G 1Z8, Canada c NBER, 1050 Massachusetts Avenue, Cambrigde, MA, 02138-5398, USA d Department of Economics, Michigan State University, Marshall-Adams H...

This paper uses the Medline biomedical papers database to measure scientific production on mental health in the workplace (MHWP) during the 1991"2002 period at the world, Canadian, provincial, urban, institutional and researcher levels. The level of scientific output has doubled at the world level and tripled at the Canadian level during the last 12 years. At the provincial level, Ontario, Queb...

From the ‡Institute of Neuroscience, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai 200031, §School of Life Sciences, University of Science and Technology of China, Hefei 230027, ¶Department of Pharmacology, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China, Department of Physiology, University of Toronto, Toronto, Ont...