Abstract: Clustering plays an important role in the image processing. It permits to assign a label to each point of the image from a collection of defined classes. Among the domains that use the clustering, we can mention the Remote Sensing for identification of different regions constituting a satellite image. Evaluation of the clustering algorithm results is based on the validity index. In this paper, we applied the Harmony Search algorithm (HS) for make an unsupervised clustering. Thereafter, we evaluated the performance of this tool by analyzing the results obtained. These results show that the validity index determines automatically the appropriate number of classes that represent an image. The study realized with several validity indices allowed us to find the best validity index to evaluate the performance and robustness of the algorithm HS. The experiences obtained with this algorithm show the effectiveness and performance in the stable clustering for given problem.

Abstract: In recent time, there has been high level of impersonation experienced on a daily basis in both private and public sectors, the ghost worker syndrome which has become a menace across all tiers of government, employers concerns over the levels of employee absence in their workforce and the difficulty in managing student attendance during lecture periods. Fingerprints are a form of biometric identification which is unique and does not change in one’s entire lifetime. This paper presents the attendance management system using fingerprint technology in a university environment. It consists of two processes namely; enrolment and authentication. During enrolment, the fingerprint of the user is captured and its unique features extracted and stored in a database along with the users identity as a template for the subject. The unique features called minutiae points were extracted using the Crossing Number (CN) method which extracts the ridge endings and bifurcations from the skeleton image by examining the local neighborhoods of each ridge pixel using a 3 x 3 window. During authentication, the fingerprint of the user is captured again and the extracted features compared with the template in the database to determine a match before attendance is made. The fingerprint-based attendance management system was implemented with Microsoft’s C# on the. NET framework and Microsoft’s Structured Query Language (SQL) Server 2005 as the backend. The experimental result shows that the developed system is highly efficient in the verification of users fingerprint with an accuracy level of 97.4%. The average execution time for the developed system was 4.29 seconds as against 18.48 seconds for the existing system. Moreover, the result shows a well secured and reliable system capable of preventing impersonation.

Abstract: This work present the use of ICTs among legal practitioners in Ibadan metropolis and to determine how often the lawyers used ICTs for their information needs and to ascertain the extent to which they were satisfied with the services provided by ICTs. The analyses are based on data from a questionnaire survey of the legal practitioners in the metropolis. The findings revealed that due to lack of awareness, majority of the lawyers were yet to take advantage of the huge potential benefits that can be derived from using ICTs. The study revealed that legal practitioners used some ICTs more than others; for instance, mobile phones and computers were the most frequently used ICTs. Furthermore, young legal practitioners embraced ICTs more than the older lawyers. In addition, about 75.2% of the respondents strongly agreed that the application of ICTs in the legal profession would go a long way in improving the efficiency and effectiveness of the profession. The major problems and constraints identified to the use of ICTs among lawyers are the unfavorable economic situation of the country, excessive cost of procurement of ICTs facilities and inadequate infrastructure such as telecommunication and electric supply.

Abstract: Implementation of Fast Hartley Transform in parallel manner on Graphics Processing Unit, using CUDA technology is presented in this paper. Calculating FHT in parallel, using multiple threads, gives us huge improvement in calculation speed. Developed CUDA based parallel algorithm, which experimental results compared with results of CPU based sequential algorithm. Edge detection algorithms can be speed up for large images, performing in frequency domain. Here experiments are done on various edge detection filters and different image sizes, using fast Hartlay transform.

Abstract: Modern educational technology with multimedia systems creates the preconditions for engaging all the senses in the process of acquiring new knowledge, develops students' creativity and provides greater activity of students in teaching and learning. Therefore, as computer science and information technology major features of education at all levels of education, from preschool to university. Today's students require different ways of learning. Growing up with the possibility of learning in virtual environments will become more independent and more willing to self-education and lifelong learning. Thus, young people who are now in elementary and secondary schools and those who are part of the formal education yet to enter, your life to be spent in active contact with information and communication technology in education and the need to be prepared for it. Information and communication technology (ICT) provides a good foundation for the creative and effective use of knowledge. Today at elementary schools educate a generation that will work in mid-21st century. Education in Serbia faces the challenges of reform and rapid adjustment to the demands of the developed environment, primarily the European Union standards, and intensive changes in science, technology, economics, and social relations as a whole. The question is what IT skills should be learned and how. What are the functional tasks of the educational process can be developed through teaching computer science? Are the students preparing for the process of lifelong learning and training? The role of contemporary modern teachers, among other things, to direct students to the creative use of information technology. The authors' intention is to highlight the problems that exist in Serbia in the application of modern ICT in teaching and education, but also some features of the implementation of ICT available to the Serbian students.