Despite the explosion of empirical research on online learning effectiveness over the last decade, development and acceptance of theoretical frameworks unique to the online learning environment are still relatively lacking. While there are several emerging models [1, 2, 3], one that has attracted some of the most attention is the Community of Inquiry (CoI) framework developed by Garrison, Ander...

INTRODUCTION Last April 1, Google launched Google Scholar Metrics, a new tool that provides impact metrics for scientific journals, measured from citation counts. The research community was caught on guard and many wondered whether it was a real product or just a joke (April 1 is Fools' Day). However, to the delight of bibliometricians and uneasiness of some major scientific publishers, the Goo...

BACKGROUND Literature searches are essential to evidence-based respiratory care. To conduct literature searches, respiratory therapists rely on search engines to retrieve information, but there is a dearth of literature on the comparative efficiencies of search engines for researching clinical questions in respiratory care. OBJECTIVE To compare PubMed and Google Scholar search results for cli...

introduction: mycobacterium marinum infection is the most common nontuberculous mycobacterial skin lesions. it results from skin injury and contact with contaminated water, fish, or shellfish; its infections have low frequency, nonspecific symptoms and lack of specific identification methods that can alter correct diagnosis.this study designed about cases that reported from iran and comparing t...

Purpose – To describe a small-scale quantitative evaluation of the scholarly information search engine, Google Scholar. Design/methodology/approach – Google Scholar’s ability to retrieve scholarly information was compared to that of three popular search engines: Ask.com, Google and Yahoo! Test queries were presented to all four search engines and the following measures were used to compare them...

Thymus daenensis Celak. is an herb endemic to Iran belonging to the Lamiaceae family. Growing in many parts of Iran, the plant is extensively used in folk medicine. This review was performed to compile phytochemical and pharmacological data of T. daenensis. Databases such as PubMed, Scopus, Web of Science, ScienceDirect, Scientific Information Database, Embase, IranMedex and Google Scholar were...