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The classic problem for a channel with inputs X, outputs Y, and conditional probability pY |X(y|x) is to find the distribution pX(x) that maximizes Shannon's I(X; Y) subject perhaps to constraints imposed on pX(x). Here, we seek instead, for a specified pX(x), the channel pY|X(y|x) that maximizes I(X; Y) subject to constraints on pY |X(y|x). That is, we investigate the part of joint source-channel...
Fractional-pel motion compensation is very good at improving video coding efficiency, especially for camera-captured content. But for screen content, which is obtained from a computer desktop, motion vectors with integer-precision may be enough to represent the motion in different pictures. Using fractional-pel motion compensation for such content is a waste of bits. Thus, adaptive motion compensation...
Nowadays in order to process and store many kinds of multimedia data, the storage capability of memory has grown greatly. Moreover the widespread use of mobile devices and cloud computing has made criminal investigators often face a lot of memory dumps. They have to deal with a large quantity of memory data and complex OS data structures which they have little knowledge of. How to analyze memory evidence...
The problem of linear prediction for multiple channels of data sampled at different rates is considered. The prediction error filters in this case are periodically time-varying. A Levinson-type recursion is developed for the linear prediction parameters. A sliding window formulation is also developed.
Using the application of mathematical statistics analysis theory, this paper presents a related data mining analysis model based on the Pearson's r. We introduced Pearson's r to mine association rules of distinctively related courses. Thus we build the computer aided teaching evaluation system, and then draw a useful conclusion for teaching.
Emotions serve as a communicative function both within the brain and within the social group. Most of previous opinion mining studies applied on Arabic microblog text to identify positive, negative or neutral polarity. This paper studies the problem of detecting multiple emotion classes in Arabic microblog text (e.g. Twitter). Incoming Arabic microblog text is classified into one of fine grained emotional...
This paper introduces the notion of predicting academic performance based on Computational Thinking. The integral role that Computational Thinking modalities play in engineering disciplines can serve as an accurate indicator of the student future academic success. Therefore, this study investigated the students' performance in a Computational Thinking course offered at the freshman level to predict...
This paper presents methodology and theoretical bases of image-cluster method of data structuring of multiparameter objects monitoring of interactive computer systems. Models of Markov transitions of quasi-stationary objects, matrix estimations of normalized cross-correlation coefficients and matrixes of cluster transitions probability, global dispersion and entropy correlative measure of quasi-stationary...
Foundations of the integrated theory of analytically defined and multifunctional data structuring on the basis of correlative, entropic, spectral, logical and statistical and matrix models of data movement have been presented in this article.
In automated video surveillance applications, detection of suspicious human behaviour is of great practical importance. However due to random nature of human movements, reliable classification of suspicious human movements can be very difficult. Defining an approach to the problem of automatically tracking people and detecting unusual or suspicious movements in Closed Circuit TV (CCTV) videos is our...
This paper investigates how different individual and institutional factors pertaining to ICT readiness influence teachers' adoption of game-based learning technologies. The data were gathered from Finnish primary, lower secondary and upper secondary school teachers (N=1668) with an online survey. The results indicate that openness towards ICT, ICT attitude and the ICT compatibility with teaching positively...
Humans and machines are collaborating in new ways and organizations are increasingly leveraging mixed-initiative teams. We examine the effect that an individual's personality has on his or her willingness to: (1) seek assistance from and/or (2) accept the recommendations of an automated teammate. We use a game of pure strategy with a perfectly accurate decision-assisting automated agent to examine...
Today, many people spend a lot of time online. Their social interactions captured in online social networks are an important part of the overall personal social profile, in addition to interactions taking place offline. This paper investigates whether relations captured by online social networks can be used as a proxy for the relations in offline social networks, such as networks of human face-to-face...
Detection of multi-manipulated image has always been a more realistic direction for digital image forensic technologies, which extremely attracts interests of researchers. However, mutual affects of manipulations make it difficult to identify the process using existing single-manipulated detection methods. In this paper, a novel algorithm for detecting image manipulation history of blurring and sharpening...
Many nations worldwide are continuing to invest in electronic government (e-government) initiatives that now demand an investigation into how well users perceive the success of these initiatives. Currently, there exists a dearth of empirical evaluation of e-government success in particular for the Australian context. Our research project, reported in this paper, is concerned with developing a conceptual...
Due to the increase in the importance of coding education, the research about the factors that affect the computer programming has been performed. This paper analyzed the relationship among abstract thinking, familiarity with programming languages, and programming ability. To achieve our research goals, we surveyed 226 high school students on their thinking styles and programming ability. We found...
Engineering is perceived to be a challenging course for many students. Their achievements are related to the efforts spent in pursuing their learning objectives. Their efforts are a function of their motivation and rewards. Inappropriate motivation does not promote autonomy and mastery. This paper presents the findings of a study of the interplay between motivational constructs, learning orientations...
Caching is an important technique to improve computer system performance by storing the most recently used data and instructions for main memory. Cache is widely used in modern computer systems and will continue to be an irreplaceable unit to narrow the speed gap between processor and main memory. With the increasing capacity of main memory and the number of processor cores, the cache technology has...
This paper proposes a method for contour completion of a skew-symmetry object which is partly occluded by other objects. The proposed method assumes that skew symmetry of a shape can be measured by correlation with its reflection on a no orthogonal plane. Under the assumption, the method estimates a skew-symmetry axis and a skew transverse angle, and then reflects the contour to the estimated axis...
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