The aim of this paper is to demonstrate, how to communicate the vehicle between themselves in a heterogeneous vehicles network, and show on which way is done the exchange of information with the infrastructure, to overcome the shortcomings of using a single wireless technology. DSRC does not offer enough good coverage and range around intersections in urban areas for specific applications. On the other side, as an alternative to overcoming these deficiencies proposed LTE, advanced mobile communications technology. The evaluation of performance is usually done by means of simulations in particular the programming software, which integrates tools to support Wi-Fi, IEEE 802.11p, mobile technology and feedback mobility. For the realization of heterogeneous networks vehicle that has support for LTE is used open source simulator for communication between vehicles and infrastructure Veins LTE, composed of a network simulator Omnet++ and traffic simulator SUMO. These two simulators are working in parallel, and allow modeling of communication between vehicles.

Introduction of LTE-Advanced network brings a series of new techniques as well as an improvement of the existing ones, which contributes to better performance in relation to LTE network. Enhanced MIMO represents one of LTE-Advanced network’s most significant techniques which enable considerably better performance. Spectral efficiency and throughput are important system performance indicators. The paper aims to estimate LTE-Advanced network performance by applying an enhanced MIMO. The results verify consistency with given the analytical values, as well as which system parameter has the greatest influence on the achieved results. When enhanced MIMO is applied, several performance testing scenarios have been created depending on the parameter which was analysed for the given scenario, namely: LTE-Advanced channel scenario, antenna configuration, number of HARQ retransmissions and the type of subframe mode. DOI: http://dx.doi.org/10.5755/j01.eee.22.1.7698

Blended learning is an intentional integration of traditional and e-learning in order to provide educational opportunities that maximize the benefits of each mode of delivery and thus effectively facilitate student learning. This paper shows blended learning model implemented at College of Computer Science and Business Communications eMPIRICA for distance-learning students at study programme Engineering Informatics. First, the blended learning structure is presented; then technologies used for development of interactive multimedia e-content and technologies used for conducting of e-learning are presented. E-learning does not involve only the development and delivery of econtent, but also the continuous teaching, learning, assignment, assessment and communication activities of all participants in the educational process (students, teachers, tutors, administrators and others). Finally, an evaluation is presented, which has been carried out by use of an anonymous survey, aiming to ascertain student satisfaction.

Due to a large presence of smartphones and other mobile devices it is necessary to use mobile and user-friendly LMS (Learning Management System) to deliver e-learning and blended learning courses and to offer a native application for e-learning support services. Based on technical and usability requirements as well as users' opinion and recommendations, mobile-friendly eCampus LMS/LCMS (Learning Content Management System) was developed. The preliminary research was carried out in BiH and Slovenia. Technical solutions conducted are described in the article as well. After implementing mobile-friendly e-learning portal, we have made a research on the use of specific learning activities in different devices, users' preferences and their suggestions for further development.

This paper addresses the benefits of using technology in developing teaching and learning resources, conducting classes and assessments in the Digital Systems course which is covered in the first year in the Engineering Informatics study program at the College of Computer Science and Business Communications eMPIRICA in Brcko District of BiH. The paper discusses good practices for using technology so as to enhance teaching and learning regardless of whether the teaching is conducted in a traditional or virtual classroom. Technology was used for online-enhancement of face-to-face classes and for blended classes that are predominantly online-based with the exception of occasional face-to-face tutorials. Class delivery included the usage of several latest technologies both for the needs of the classroom and production of e-learning study materials and conducting distance education. Learning materials were enriched with eye-catching multimedia and delivered via e-materials module, while dynamics of distance learning and teaching was defined within the e-classroom module, and both can be found on LMS/LCMS eCampus. At the end of the semester full-time and distance learning students evaluated technology efficiency and usefulness used to develop and conduct the course. Benefits of the proper use of technology in developing learning resources and carrying out classes have been presented, the detected problems have been discussed and recommendations for efficient technology usage in preparing and conducting engineering education have been given.

This paper analyses the use of web conference enabled lectures for programming courses within Engineering Informatics study programme, for two different groups of students: regular face-to-face students and blended learning students. Web conference offers the opportunity for the participants in the distance learning environment to be brought into a joint virtual environment regardless of their location, and also offers interactive and collaborative possibilities which facilitate the process of acquiring collective knowledge. The paper presents the comparison of mostly used web conferencing tools nowadays, based on several criteria: functionality, security, software installation, meeting setup and usability. Main aim of this paper was to evaluate the effectiveness of using web conference in teaching programming, for face-to-face and blended learning students. Web conference lectures were applied in the class on four out of ten courses in total, in the second year of the studies. The summative analysis of the pass rate and the average mark for both groups of students has been carried out in these courses. Then the results that the students achieved in the courses where the web conference was used were compared to the results that they achieved in the courses where the web conference was not used. Based on students' evaluation, the paper also presents formative analysis of efficiency and usefulness in using web conference in the class. Finally, guidelines for the efficient use of web conference in delivering programming courses have been proposed.

This paper presents the importance of application and integration of learning styles in adaptive educational hypermedia systems - AEHS. The main goal of the paper is a comparative analysis of the data obtained from the initial questionnaire based on Felder-Silverman learning style model and the data from the user model and domain model of our AEHS system TeleEDUCOS. Results of the analysis indicate the correspondence of these two approaches, which leads to conclusion that information about the users' learning styles should be taken into account when designing AEHS systems with the aim of improving efficiency in adapting and presenting of educational material to the users as well as the effectiveness of the learning process supported by AEHS system.

As the Internet and electronic mail continue to be utilized by an ever increasing number of users, so does fraudulent and criminal activity via the Internet and email increase. The negative effects of cybercrime activities on the use of the Internet for e-business and secure communications increased interest in studying the factors that motivate these criminals, their tactics and what can be done to mitigate their activities. The research in the area of email analysis usually focuses on two areas, email traffic analysis and email content analysis, but very poor in the area of visual analytics of emails. The paper presents the software for visualizing suspicious email messages based on the information provided in the email header (rather than the content of the email). This IP mapping tool, called MIPA, uses a Google Map to display the geographic position and integrates InfoDB, WhoIS databases, and the Google Maps API. Thus, the proposed work can be helpful for identifying and investigating suspicious email messages and also assist the investigators to get the information in time to take effective actions to reduce the criminal activities.

This paper presents a blended learning model that has been successfully developed and applied at the College of Computing and Business Communications eMPIRICA in BiH, in frame of the study program Engineering Informatics. A developed and implemented blended learning model was created along the lines of Flex model, where the content, instruction and continuous assessment are delivered to students by using e-learning system eCampus. Students are provided with the variety of e-learning resources and activities along with obligatory face-to-face teaching and laboratory work. In order to estimate the efficiency of the applied blended learning model in comparison with traditional learning, a summative analysis has been performed based on an analysis of the success of two student test groups.

The age of modern technologies brings rapid changes in all aspects of human life and in education as well. eLearning is became universal brand, trade mark for innovative approach to learning process of new students generation. Today, for implementation of eLearning are in usage a new various technologies, mostly practical implementations. Two very popular technologies for production and delivery of digital media at the universities are streaming media and digital signage technology. In this paper, a system that integrates streaming media and digital signage technology has been designed and implemented. System allows production, management and distribution of video-based multimedia educational content in the way of streaming video and digital signage content, combined with advertising and notifying. Such system can be used on faculties or universities, providing an efficient and effective way of distribution advertising alongside with lecture-related content.

The channelisation codes used in Universal Mobile Telecommunications System (UMTS) belong to the family of OVSF codes. They are organised according to a code tree structure. OVSF codes are primarily used to preserve orthogonality between different channels. The 3G system has to provide applications with higher and multirate and different quality of service (QoS) requirements. UMTS networks employ wide-band code division multiple access (WCDMA) to support multirate applications utilizing OVSF codes. The transmission rate can be easily changed by changing the spreading factor of orthogonal spreading code. The objective of code assignment is to enhance statistical multiplexing and spectral efficiency of WCDMA systems supporting variable user data rates. This paper compares the performance of OVSF code assignment schemes, in terms of code blocking probability. We analyze the problem of assigning OVSF codes at download link in 3G mobile communications systems employing WCDMA.

E-education is becoming a reality that seems, because of use of technology for teaching and learning, to be more real for students than for teachers. In this contribution we on the one hand take a look at e-learning at the mezzo-level from the perspective of educational institutions. We tried to elaborate where they face obstacles, which are they and what mechanisms they work by. We focus on human resources and human skills and see technology partly as advantage and partly as disadvantage to implement e-education. On the other hand we look at e-learning at micro-level and discuss creating of e-contents and their use in (e-)classrooms. We are dealing with technology just as much as we are dealing with required skills and competences of teachers and students.