توجه: محتویات این صفحه به صورت خودکار پردازش شده و مقاله‌های نویسندگانی با تشابه اسمی، همگی در بخش یکسان نمایش داده می‌شوند.
۱A Secure Watermarking by Chaotic Function
اطلاعات انتشار: چهاردهمین کنفرانس مهندسی برق ایران، سال
تعداد صفحات: ۵
In this paper a secure watermarking system is proposed. Instead of embedding the original watermark into the cover image like the normal watermarking systems, the proposed system creates a chaotic sequence and embeds DCT transform of the original watermark via this sequence into the cover image, so the method is named Chaotic DCT Watermarking ,CDW. Another sequence is used to encrypt the coefficient of DCT. To reveal the original watermark, the correct keys are required. Simulation results show the higher security and lower memory can be achieved by the proposed method.<\div>

۲10 Years of the International Journal of Information Science and Management: A Scientometric and Social Network Analysis Study
نویسنده(ها): ،
اطلاعات انتشار: International Journal Of Information Science And Management، سيزدهم،شماره۱، ۲۰۱۵، سال
تعداد صفحات: ۲۰
This paper aims to study the performance of the International Journal of Information Science and Management (IJISM) over a decade using scientometric approach. It also tries to study the co–authorship network of authors and institutions using different macro– and micro–level Social Network Analysis metrics. A total of 173 articles published in 23 issues of the IJISM covering the period 2003–2012 were analyzed in this study. The findings reveal that multi–authored articles published in the journal far outnumbered single–authored articles at 69.1%. Two–authored papers comprise the highest percentage (46.2%) of the total papers compare to other authorship patterns. Results show that the co–authorship network of authors in the IJISM is a small world network by demonstrating its short distance and scale free properties. Moreover, the famous notion of six degree of separation can be valid in this network. The study also identifies central and critical authors and institutions in IJISM’s collaboration network based on centrality, citation impact and productivity measures.
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