SNIP measures contextual citation impact by weighting citations based on the total number of citations in a subject field.
SJR is a prestige metric based on the idea that not all citations are the same. SJR uses a similar algorithm as the Google page rank; it provides a quantitative and a qualitative measure of the journal’s impact.
The Impact Factor measures the average number of citations received in a particular year by papers published in the journal during the two preceding years.
© Thomson Reuters Journal Citation Reports 2015
To calculate the five year Impact Factor, citations are counted in 2014 to the previous five years and divided by the source items published in the previous five years.
© Journal Citation Reports 2015, Published by Thomson Reuters
Progress in Polymer Science publishes state-of-the-art overview articles by internationally recognized authorities in polymer science and engineering, one of the fastest growing disciplines. The journal provides a link between original articles, innovations published in patents, and the up-to-date knowledge of technology. It publishes review articles on subjects not only within the traditional fields of polymer science and technology - chemistry, physics and engineering involving polymers - but also within interdisciplinary developing fields such as functional and speciality polymers, biomaterials, polymers and drug delivery, polymers in electronic applications, composites, conducting polymers, liquid crystalline materials and the interphases between polymers and ceramics, and new fabrication techniques, where significant contributions are being made. Contributors are usually invited by the Editor; however, authors wishing to submit a review to the journal are encouraged to submit a proposal to the Editor first using the Proposal Form as a guide.
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