The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
Educators show great interest in participating in social-media communities, such as Twitter, to support their professional development and learning. The majority of the research into Twitter-based professional learning communities has investigated why educators choose to use Twitter for professional development and learning and what they actually do in these communities. However, few studies have...
Related research for sentiment analysis on Chinese microblog is aiming at analyzing the emotion of posters. This paper presents a content extension method that combines post with its' comments into a microblog conversation for sentiment analysis. A new convolutional auto encoder which can extract contextual sentiment information from microblog conversation of the post is proposed. Furthermore, a DBN...
Recently, product perfect codes (PPC) steganographic method was proposed by H. Rifa-Pous and J. Rifa, which can achieve large embedding efficiency with less distortion. They divided the cover image into disjoint matrix blocks and apply F5 algorithm in each row and some columns. The proposed method in this paper improves the PPC embedding method. F5 algorithm was also utilized in each row, but to the...
The bit permutation unit consists of bit permutation network and configuration information. In the article, a configuration information parallel extraction algorithm with time complexity O (log2N) based on Waksman network is presented to achieve not only bit permutation system on reconfigurable cipher microprocessors but also an arbitrary N × N bit permutation. This algorithm can support bit permutation...
Since current DCT-domain watermarking algorithm is poor self-adaptive, a new digital watermarking algorithm that combines encryption with adaptability is proposed. Before been embedding, it need to be Arnold transformed so that it can break the correlation of watermark's inter-related data, greatly increase the security of watermarking and reduce the errors may be caused in the watermark image transmission...
Semi-similarity design is a reasonable and effective approach for motorcycle-hydraulic-disk brake design, which is an indeterminate problem because of incomplete required parameters. First, equation of semi-similar level scale is set up through analyzing the design model of motorcycle-hydraulic-disk brake. Second, algorithm of semi-similarity design and a fuzzy evaluation model for design scheme are...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.