667 papers found .

561. System for publicly accessible Register of educational, cultural and health-care institutions

ICIST 2013 Proceedings, 264-269
Zarić Miroslav, Penca Valentin, Paroški Milan, Bulatović Rajko
Abstract: A comprehensive Register of institutions in the fields of culture, education and health is an essential tool for policy and decision making in those fields. Institution can be either completely or partially owned and financed by local, provincial or state government. Therefore, those governmental levels can have various responsibilities in the process of decision making regarding further development, financing and planning in those institutions. In order to successfully perform their duties and exercise their rights in governing those institutions, comprehensive and up-to-date information about those institutions must be available. Appropriate form for storing potentially large amounts of data about those institutions is to build a specialized registry. By opening parts of such a registry to public access, the level of e-government service that local, provincial and state government is providing to citizens can be largely improved. Such an open access can be beneficiary to both citizens as well as professionals in those fields. This paper presents a pilot project of such a registry, developed for Provincial Government of Autonomous Province of Vojvodina. This paper presents overall data model necessary to support such a registry, as well as an implementation of one specialized registry - Registry of health institutions. The presented implementation is entirely based on open source software systems.
Abstract: Quality of Health Care has been significantly improved through advancement of medical technologies by enabling health professionals to diagnose diseases more rapidly and accurately, patients to recover sooner and with improved quality of life, health care providers to be more efficient and increase economic productivity and control costsIn order to benefit from unprecedented technology advancement in health care, it is important to additionally focus on organizational factors, workflow redesign and human factor issues. Structural design and culture of the organization need to be associated with the predominant national culture. Several literature findings indicate that harmonious alignment of organizational and national culture support organizational learning that promote effective utilization of the new technology. Authors are presenting a case study designed to explore appropriate methodology for sustainable implementation of Health Care technology projects in Serbia., with special attention to analysis of particular dimensions of national culture correlated with organizational culture and structure.

563. Measuring efficiency of formally represented instructional strategies

ICIST 2013 Proceedings, 274-279
Savić Goran, Segedinac Milan, Kovačević Aleksandar, Konjović Zora
Abstract: This paper deals with comparing the efficiency of guided and unguided learning using formal representation of an instructional strategy. Strategies were formally represented with ELIDL – an XML-based language specially designed for this purpose. Three instructional strategies were defined. Two of them, named worked-out examples and process-worksheets, represent guided learning, while the third one represents unguided learning. The efficiency of the strategies was evaluated on the course “Numerical algorithms and numerical software in engineering” held at the Faculty of Technical Sciences at University of Novi Sad. A sample of 81 students was divided into three groups, where each group was given the course created according to different instructional strategy. The results show that the most efficient instructional strategy is process-worksheets strategy.

564. IEEE RCD standard based ontological modeling of computer science curriculum

ICIST 2013 Proceedings, 280-285
Mandić Milinko, Segedinac Milan, Savić Goran, Konjović Zora
Abstract: The paper presents modeling of Computer Science curriculum based on ontologies. The main concept of the proposed ontological model is the competence defined by IEEE RCD standard. Mapping of the IEEE RCD data model to ontological model is described in detail. ACM Computing classification is used for domain knowledge modeling. Protégé tool is used for designing ontologies.

565. Implementation of Mobile Application for the Needs of the Integrated Learning System

ICIST 2013 Proceedings, 286-289
Čović Zlatko, Ivković Miodrag, Radulović Biljana
Abstract: This paper describes the implementation of the native mobile application for Android operating system. Realized application is the aid for learning and testing process of the users in the integrated learning system. Components of this eco system are presented with an emphasis on mobile application. Plans for future development are given.

566. Quality assurance of e-learning through improvement of teaching materials

ICIST 2013 Proceedings, 290-293
Ružičić Vesna, Blagojević Marija
Abstract: The current trend in education is towards flexible and creative institutions that are capable of sustained change and development. E-learning plays an important role in the process of accessing, collecting, analyzing and transforming information and knowledge. The greatest contribution has to do with bettering both the teaching staff and the students and raising the process of education to a higher level. The quality of teaching and the system for managing the process of learning is likewise improved. The primary aim of E-learning is to enhance the quality of contribution to a particular organization, i.e. an educational institution. The research testifies to the importance of E-learning, as well as the quality of instructional content, and the results have been obtained by means of a survey conducted among students who use the learning management system. The teaching materials which are posted on the learning management system, as well as the activities through which students acquire knowledge, have been clearly outlined in the paper. A suggestion as to how to improve certain materials in order to enhance the quality of knowledge has also been offered on the basis of the results obtained in the survey.

567. Burnout effect: simulation modelling approach for learning

ICIST 2013 Proceedings, 294-299
Pejić Bach Mirjana, Zoroja Jovana, Merkač Skok Marjana
Abstract: Modern society is a fast-moving, achievement-oriented, very competitive and lead to many stressful situations, which individuals cannot handle always. The consequence of that state is burnout effect. We propose usage of system dynamics methodology in exploration of burnout effect. Several experiments have been conducted and presented which indicate increase and collapse behaviour in case of burnout experience by the individual.

568. Use of computerized adaptive testing in corporate e-learning

ICIST 2013 Proceedings, 300-303
Kačapor Kemal, Milanov Dušanka
Abstract: This paper will describe the potential of computerized adaptive testing, as a part of E-learning, within a corporate context. The success of any organization today is more and more dependent on the quality of the people they are able to attract, recruit and retain and employee value is essential for competitive market environment. Adaptive tests are designed to maximize measurement efficiency, or the precision of test scores in relation to test length. Therefore, the potential of computerized adaptive testing in determining employees knowledge and skills development, which are vital in any organization, is going to be presented and analyzed

569. Case study: univariate time series analysis and forecasting of pharmaceutical products’ sales data at small scale

ICIST 2020 Proceedings Part I, 1-4
Zdravković Milan, Đorđević Jasmina, Catić-Đorđević Aleksandra, Pavlović Sonja, Ivković Miodrag
Abstract: The objective of the research behind the paper was to validate different methods and approaches related to sales time series data preparation, analysis and forecasting, with aim to facilitate recommending sales and marketing strategies based on trend/seasonality effects and forecasting sales of eight different groups of pharmaceutical products with diverse characteristics, such as stationarity, seasonality, amount of residuals and sales data variance. All these analyses and forecasts are made on a small scale, for a single distributor, pharmacy chain or even individual pharmacy. Paper presents only research work related to univariate time series analysis, while potential candidates for explanatory input variables were also identified and shortly elaborated. Effectiveness of three forecasting methods, namely ARIMA, Facebook’s Prophet and Long-Short Term Memory (LSTM) neural networks was investigated. Each of the method is complemented with two optimization and validation approaches, relevant for short-term (so called rolling forecast scenario) and long-term forecasting.

570. Novel Educational Methodology for Personalized Massive Open Online Courses

ICIST 2020 Proceedings Part I, 5-9
Vitković Nikola, Mišić Dragan, Simonović Miloš, Banić Milan, Miltenović Aleksandar, Mitić Jelena, Milovanović Jelena
Abstract: In today’s higher education, various learning concepts are applied, and in general, two approaches exist in designing web-based education systems with Massive Open Online Courses (MOOC): adaptive education systems and intelligent tutoring systems. For their success, it is important to actively include student(s) and to properly analyze theirs answers. These approaches enable creation of general topic courses, with content described by using only one teaching style or methodology, and main shortcomings are: missing or inadequate feedback from the students, system adaptation not focused on learning context, and course presentation and learning material limited to one teaching style. The main idea of this research is to develop Novel Educational Methodology (NEM), which will combine traditional and eLearning concepts into one new eLearning platform tailored to the needs or requirements of the student, student group, and teacher, thus, enabling creation and implementation of personalized MOOC(s), applicable in education, research and industry.

571. Automation of FEM Analysis Report Generation using Visual Basic FEMAP API

ICIST 2020 Proceedings Part I, 10-15
Vulović Snežana, Bojović Milan, Topalović Marko
Abstract: Finite Element Method (FEM) is the most popular numerical method used for a wide range of problems, from the aerospace industry to biomechanical engineering and many more diverse applications in between. In this paper, we will not focus on the method itself, nor its applications, but we will address one tedious commonality that all engineers face, no matter what kind of analysis they perform, and that is writing a report. In the most cases, the contract requires a detailed Word document featuring description of all load cases, filled with the images of Finite Element mesh, colored by the equivalent stress or strain, which must emphasize the most critical areas of the structure. There are many commercial FEM softwares, and every one of them has a special pre and post-processing modules, which all in some way or another have certain limitations. FEMAP is a program developed by Siemens PLM, and it is specifically designed for FEM pre and post-processing. FEMAP can generate input files for all relevant commercial FEM programs, and read results from their output files. One of the most powerful features of FEMAP is its customization using an Application Programming Interface (API). In this paper, we will show how to use this API for connecting FEMAP with MS Word, and generating images for the analysis report. The key sections of the developed Visual Basic script are explained, as well as the most important methods and properties of FEMAP Application Object, which are used to access the analysis model. Although presented method does not influence the numerical procedure, or construction changes made by engineers, it significantly speeds up design iterations during development of a new product, because for every new proposed version, a full set of FEM analysis must be performed, and reports for them created.

572. Methods for Drone Detection and Jamming

ICIST 2020 Proceedings Part I, 16-21
Matić Vladimir, Kosjer Vladimir, Lebl Aleksandar, Pavić Branislav, Radivojević Jovan
Abstract: This paper presents methods for drones’ detection and for jamming. Implementation of drones in malicious activities highly increases in the last years and the methods implemented for drone detection are numerous. The characteristics of the most detector types: radar, radiofrequency, acoustic, optical and thermal are emphasized in the paper. The goal of this analysis is to give the guidelines in choosing which techniques to use and combine for drone detection. The paper emphasizes the guidelines for drone successful jamming while presenting IRITEL solutions implementation for drones malicious function prevention and drones role in jamming efficiency improvement.

573. Edge Computing for Fault Detection in Smart Systems

ICIST 2020 Proceedings Part I, 22-26
Stankovski Stevan, Ostojić Gordana, Nićin Miroslav, Baranovski Igor, Tarjan Laslo
Abstract: Increasing the performance of all computing components enables the development of new architectures and platforms for data processing, sharing, distribution and storage of data. Speed, security and reliability of data transmission are essential parameters in industrial automation and therefore only those architectures/concepts that successfully meet these parameters have a chance to succeed in an industrial environment. The general need for data sharing has made that the amount of data, which are generated and recorded significantly, are increased and therefore new approaches are needed to address to these facts, especially in industrial automation. One approach in industrial automation is using Edge computing. Edge computing brings new power in data processing in industrial automation and opportunities in data processing of big data in real-time. This characteristic is essential for the prediction of fault detections and represents one of the landmarks of smart systems. In this paper are described basics of Edge computing and its possibility for fault detection in smart manufacturing systems.

574. Assessment of Human Neuromuscular System State Using Standard Human-Computer Interaction

ICIST 2020 Proceedings Part I, 27-31
Mišić Dragan, Trajanović Miroslav, Korunović Nikola, Vitković Nikola
Abstract: The paper describes an application for assessing the state of human neuromuscular system based on the data obtained from standard human-computer interaction. The application features several tests, which the users perform online. Test results are recorded in the database, which enables data analysis, based on which the human condition is evaluated. Based on these results, it can be assessed whether the recovery is going in the right direction or whether a therapy is appropriate. Monitoring the neuromuscular system state in this way can results in timesaving for both the doctor and the patient, as it can reduce the number of patient check-ups. At the same time, in the case of unfavourable results, a timely response from physicians could be provided, which without this system would be delayed until the next check-up.

575. Use of spatial sound notifications for takeover requests in semi-autonomous vehicles - a cross-cultural study

ICIST 2020 Proceedings Part I, 32-35
Stojmenova Kristina, Sanghavi Harsh, Nadri Chihab, Ko Sangjin, Tomažič Sašo, Sodnik Jaka, Jeon Myounghoon
Abstract: To investigate the full potential of non-speech sounds, this study explored the use of spatial sound displays for takeover requests in semi-automated vehicles. The study was conducted in a motion-based driving simulator with 72 participants in two locations – Slovenia and Virginia. All participants were engaged in four 9-minute driving tasks in level-3 automated vehicle. Each driving session contained three hazardous events with takeover request (in total 12 requests per user). The results showed shorter reaction times to the directional sound displays compared to the non-directional sound display. Regardless of the sound display, the participants in Slovenia had statistically significantly shorter reaction times compared to participants in Virginia. While in Slovenia in 77% of the trials the participants’ first reaction was braking and 23 steering, all of the Virginia participants’ first reaction was braking.

576. Usability Factors in e-Learning Acceptance Models

ICIST 2020 Proceedings Part I, 36-41
Dimitrijevic Sonja, Devedžić Vladan
Abstract: Usability is an important factor that influences learners’ and teachers’ attitudes towards the use of an e-learning system. The objective of this paper is to summarize and critically evaluate how usability has been addressed in e-learning acceptance models based on Technology Acceptance Model (TAM). A relatively recent systematic literature review has served as a starting point for the selection of papers. In addition, more-recent papers have been searched and selected. The results of the review have shown tendencies in tackling usability in the given context. Among different usability-related constructs that have been introduced, the most prominent ones are user satisfaction, perceived user interface design and perceived interactivity. The statistically significant influence of usability factors in the reviewed models has been confirmed in most of the studies. Future research may benefit from including neglected objective usability measures. Collecting these measures in innovative, less demanding ways should be considered. Moreover, including subjective measures based on standardized usability questionnaires may be quite beneficial considering their multidimensionality, validity and reliability.

577. FPGA Design of IP Packet Filter based on SNORT rules

ICIST 2020 Proceedings Part I, 42-45
Efnusheva Danijela, Cholakoska Ana, Kalendar Marija
Abstract: Contemporary technology advances increase the pace of rapid expansion of the number of computers and devices connected to the Internet on а daily basis. Therefore, one of the highest priority issues that need to be considered in this enormous network is the network security. The greater the number of connected users and devices, the attempts to invade privacy and data of connected users becomes more and more tempting to hostile users. Thus, Network Intrusion Detection Systems (NIDS) become more and more necessary in any network device connected to the Internet, and are taking the lead in the battle against intruders. This paper addresses the network security issues by implementing NIDS style hardware implementation network packet filter intended to provide fast packet processing and filtering. The hardware is based on several NIDS rules that can be programmed in the system's memory, thus enabling modularity and flexibility. The designed hardware unit is described in VHDL and implemented in a Virtex7 VC709 FPGA board. The simulation timing diagrams and FPGA synthesis (implementation) reports are discussed and analyzed in this paper.

578.  CRDTs as replication strategy in large-scale edge distributed system: An overview

ICIST 2020 Proceedings Part I, 46-50
Simić Miloš, Stojkov Milan, Sladić Goran, Milosavljević Branko
Abstract: Replication is one of the most important parts of any distributed system. It is mainly used to provide fault-tolerant and robust systems. Data is copied on a few different machines, and often in several regions to ensure that loss of a single machine, cluster or even region does not affect the overall quality of the service given to users. Over several decades both academia and the industry developed few techniques on how to manage these tasks. These techniques usually involve some sort of expensive synchronization or consensus to ensure replication is done properly. Conflict free replicated data types or CRDTs, do not use consensus, but a set of strong mathematical rules and they are guaranteed to converge eventually if all concurrent updates are commutative. Expensive synchronization or consensus might be a problem with resource-limited devices. In this paper, we present a review of CRDTs, it’s benefits and shortcomings in the domain of the large scale edge computing systems with constant data flow with processing on the very edge of the network. We provide answers to questions is this technique applicable as a data replication strategy in systems with limited hardware capabilities, and could we retain or improve availability and reduce the latency of the system, but at the same time avoid expensive synchronization and consensus-based approach, which could be problematic due to the nature of edge computing.

579. Traditional and Blockchain-based access control models in IoT: A review

ICIST 2020 Proceedings Part I, 51-55
Stojkov Milan, Simić Miloš, Sladić Goran, Milosavljević Branko
Abstract: Internet of Things gained popularity in recent years and the number of devices that are being interconnected is increased every day. These devices can exchange all kinds of information which is beneficial but also this introduces some concerns in terms of security and privacy. Conventional security approaches have shown as modestly applicable for IoT primarily due to the decentralized and lightweight nature of the devices. Access control is one of the concerns that have to be addressed. Traditional models are widespread in IoT systems as a starting point solution, but their shortcomings can be overcome with emerging technologies such as Blockchain that is a base for various cryptocurrencies that have recently gained popularity to provide security and privacy in peer-to-peer networks with similar topologies to IoT. In this paper, an analysis and comparison of different traditional and Blockchain-based solutions are conducted to see if and how IoT specific challenges can be tackled with these new technologies.

580. Applying Blockchain Technology to Oil and Gas Industry

ICIST 2020 Proceedings Part I, 56-59
Marjanović Jelena, Dejanović Stefan, Smirnov Vadim, Miljković Petar, Lendak Imre
Abstract: Bitcoin, the first decentralized cryptocurrency, maybe getting less attention than earlier, but the technology behind it, blockchain, is searching for its place in various fields each day. Blockchain has been shown to work in finance, the Internet of Things, healthcare, and many more industries. The oil and gas industry still needs to tackle this technology. Our work shows how blockchain can be used in tracking gas levels on various gas stations.

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