568 papers found .

521. The Relation of the MC Sensor and Dynamometer Responses

ICIST 2013 Proceedings, 57-60
Stančin Sara, Đorđevic Srđan, Tomažič Sašo
Abstract: Natural motion of people is a complex process involving the entire psychophysical system. Its analysis contributes to a better and more comprehensive understanding of specific activities and behavior in general. The estimation of skeletal muscle tension during contraction is an important element in understanding human motion. A novel MC sensor that enables noninvasive in situ (examine the phenomenon exactly in place where it occurs) determination of the biomechanical, contractile and viscoelastic properties of all surface skeletal muscles, muscle parts, tendons and ligaments has been developed. With the MC sensor, muscle properties determination is achieved by measuring muscle force at the skin surface above the subject of measurement. The relationship between forces measured with the MC sensor and a dynamometer is nearly linear in static conditions. In this paper we show that this nearly linear relationship also holds when forces dynamically change in time during voluntary isometric contraction.

522. Control of a Quadrotor Flight

ICIST 2013 Proceedings, 61-66
Rodić Aleksandar, Mester Gyula
Abstract: This paper presents the control of a quadrotor flight. Two characteristic representatives of frequently used flight control techniques are considered: backstepping and fuzzy. The paper aims to contribute to the objective assessment of quadrotor control performances with respect to the criteria regarding to dynamic performances, trajectory tracking precision, energy efficiency and control robustness upon stochastic internal and/or external perturbation. Qualitative evaluation of the closed-loop system performance should to enable the best choice of quadrotor control structure. Non-linear modeling, control and numerical simulation of characteristic flight test-scenarios are described in the paper, too. Obtained simulation results for two representative control algorithms are graphically and table presented, analyzed and discussed.

523. Data acquisition in microprocessor system for pulse oximetry

ICIST 2013 Proceedings, 67-72
Gazivoda Nemanja, Beljić Željko, Sovilj Platon, Pejić Dragan, Župunski Ivan
Abstract: The aim of this presentation is to give a brief review about the experimental research project on the use of microprocessor systems in medical instrumentation. The goal of this research is to prove the concept of designing a simple, cheap but reliable sistem for measuring blood oxygenation and pulse rate. The main goal has been achieved, and the results obtained by this measurement configuration are more than satisfactory.

524. Strong FEM analysis of the multilayered anisotropic striplines

ICIST 2013 Proceedings, 73-76
Mančić Žaklina, Petrović Vladimir
Abstract: In this paper with the use of the strong FEM formulation, a quasistatic analysis of shielded striplines with multilayer anisotropic dielectric and conductive strip of the finite thickness was performed. For this structure it was determined how the parameters of the line depend on the position of the conductive strip. Also, a three-layer shielded microstrip line was analyzed and the influence of the order of layers on the line parameters was studied.

525. Remote measurement of fluid velocity In Point

ICIST 2013 Proceedings, 77-80
Beljić Željko, Gazivoda Nemanja, Sovilj Platon, Pejić Dragan, Vujičić Vladimir
Abstract: In this paper the method for remote measuring and reconstructing a signal from an electromagnetic probe, dedicated to the measurement of fluid velocity in the point, is proposed. The method is based on the principles of recently developed measurement over the interval method. It is concluded that the interferences are digitally removed, and the samples of measured signal are successfully transferred from the remote location and completely reconstructed on central server.

526. Micro-benchmarking NS-2 and NS-3 Network Simulators Using the Terrain Aware Radio Propagation Extension

ICIST 2013 Proceedings, 81-84
Stojanova Sonja, Djinevski Leonid, Mishkovski Igor, Filiposka Sonja, Trajanov Dimitar
Abstract: This paper presents an overview of few of the most used network simulators in academia. Also, computational performance is evaluated for a radio-wave propagation model in simulation scenarios for one of the most popular and widely used network simulators NS-2, and its new significantly different version NS-3. Additionally we present the differences between both simulators, and few major issues that need to be taken into account when porting a NS-2 model to NS-3, from a developer’s point of view. The results present a significant computational performance increase when using the NS-3 network simulator.

527. Evaluating network performance in mobile multimedia delivery

ICIST 2013 Proceedings, 85-90
Sladojević Srđan, Ćulibrk Dubravko, Mirković Milan, Panić Marko
Abstract: The paper proposes a framework for network performance evaluation in multimedia delivery to mobile devices. The proposed approach is based on logging the sequences of received packets during the transmission of H.264 coded video using the common Real Time Streaming Protocol (RTSP). Logged sequences enable the monitoring of the Quality of Service (QoS) provided to the user and subsequent reconstruction of impaired video sequences as they were presented to the user. We evaluated the proposed approach in three different, realistic multimedia delivery scenarios. The effects of such transmission conditions are explored based on a set of videos typically used to evaluate multimedia system performance. We further evaluate the system’s performance based on the number of successfully decoded frames.

528. DSL role in the Next Generation Access Networks

ICIST 2013 Proceedings, 91-94
Umek Anton
Abstract: Broadband wired access should be accelerated to at least 30Mbit/s in the next seven years. A migration to an all-fiber network infrastructure requires a massive investment and will take time to complete. Hybrid fiber-copper network topology is cheaper and faster to deploy. The latest DSL technologies will play a key role in transition to the final all-fiber access network.

529. Communication based on MQTT protocol

ICIST 2013 Proceedings, 95-99
Milojić Milan
Abstract: MQTT is a messaging protocol that enables efficient and lightweight telemetry transport that is required in the modern era of communications. Many devices are communicating directly to each other, thus forming the Internet of things, a new Machine to Machine (M2M) communication network. Aim of this paper is to present MQTT key concepts, most notably publish/subscribe model that is well suited for smart sensors and smartphones, as they require efficient means of communication due to their limited processing power and short battery life. Some successful MQTT application examples will be considered and it will be discussed on how they can benefit today’s world. It will be discussed with more detail how Android devices among others can benefit most out of MQTT, by using a Service implementation of a push mechanism for receiving important notifications.

530. New security challenges in M2M networks

ICIST 2013 Proceedings, 100-105
Obradović Aleksandar, Jakovljević Bojana, Nikolić Gorica, Ognjanović Nemanja
Abstract: Machine to machine (M2M) technology is bringing benefits to humans, as well as the new market opportunities for M2M device manufacturers, service providers, and Telco operators. On the other hand, the deployment of M2M technologies is raising numerous challenges, in the first place those in security, which are not encountered in traditional communication networks, and therefore not answered yet. Due to the low cost and mass deployment nature of M2M devices and infrastructure developed so far for their support, security issues are not fully addressed by the existing wireless devices and standard cellular networks. An overview of new security challenges for M2M networks is given in this paper.

531. New security challenges in M2M networks

ICIST 2013 Proceedings, 100-105
Obradović Aleksandar, Jakovljević Bojana, Nikolić Gorica, Ognjanović Nemanja
Abstract: Machine to machine (M2M) technology is bringing benefits to humans, as well as the new market opportunities for M2M device manufacturers, service providers, and Telco operators. On the other hand, the deployment of M2M technologies is raising numerous challenges, in the first place those in security, which are not encountered in traditional communication networks, and therefore not answered yet. Due to the low cost and mass deployment nature of M2M devices and infrastructure developed so far for their support, security issues are not fully addressed by the existing wireless devices and standard cellular networks. An overview of new security challenges for M2M networks is given in this paper

532. On the semantic issues of electronic health records for virtual physiological human infrastructures

ICIST 2013 Proceedings, 106-111
Zdravković Milan, Trajanović Miroslav
Abstract: In this position paper, we discuss about the semantic issues of the existing formal or non-formal models of Electronic Health Records (EHR). The discussion synthesizes the relevant conclusions from the literature, related to the expanded scope of EHR, namely, its use in cross-boundary medical workflows and diagnosis, prediction and treatment of diseases, in the context of its integration with Virtual Physiological Human (VPH) models. Based on this discussion, we propose the guidelines for the development of the corresponding semantic infrastructure.

533. Ontology-enabled airport energy management

ICIST 2013 Proceedings, 112-117
Tomašević Nikola, Batić Marko, Vraneš Sanja
Abstract: For providing advanced, intelligent facility management systems, a comprehensive facility data model is needed which classifies and describes information within the domain of interest. This paper presents one way of providing this metadata layer based on the ontology modelling concept which was defined specifically to underpin the intelligent energy management systems (EMS) of complex infrastructures such as airports. The main ontology entities are presented, which define the general concepts behind the airport facility modelling from the energy management perspective. The aim was to model the semantics of the significant energy consumption systems installed at the airport. Furthermore, presented ontology-based approach offers common semantics needed in order to increase the interoperability and to provide seamless data transfer between diverse devices and systems involved into the EMS of the airports.

534. Web application for residential renewable energy system feasibility appraisal

ICIST 2013 Proceedings, 118-123
Paunović Dejan, Batić Marko, Vraneš Sanja
Abstract: This paper reveals unique features of an originally developed Web-enabled decision support tool for RET (Renewable Energy Technologies) investment appraisal. Furthermore, complete software system architecture is described, providing a detailed insight in the state of the art software development technologies used. Moreover, all functional parts of the system were thoroughly described depicting the necessary steps to perform one simulation run using the proposed tool. Finally, the set of required inputs as well as simulation outputs were explicitly depicted, thus emphasizing the benefits brought in with this online service.

535. Orchestrating Yahoo! FireEagle location based service for carpooling

ICIST 2013 Proceedings, 124-129
Dimitrijević Dejan, Luković Ivan, Dimitrieski Vladimir, Vasiljević Ivan
Abstract: This paper proposes orchestrating Yahoo!’s FireEagle public location based service to build web and mobile applications intended to be used jointly for a near real-time capable carpooling service.

536. Application of semantic web in tourism information systems

ICIST 2013 Proceedings, 130-135
Đokić Marija, Stefanović Nenad
Abstract: Tourism service providers are faced with many challenges due to service complexity and diversity, higher customer expectations, and non integrated heterogeneous information systems. This paper presents a model which utilizes semantic web technologies for an improved exploration and rating of hotels for business customers in order to reduce the search time and costs. The main topic of this paper is to describe system architecture of the semantic web portal KG Hotel Info. Portal allows customers to review and booking hotels available in Kragujevac in a very simple and intuitive way. The search is performed by specifying the various search criteria, in combination with SPARQL, one of the most relevant query languages for web ontologies. The paper also presents a part of the ontology, developed within Protégé software tool, which was used for development of the web portal.The proposed model offers many benefits such as easier search and more accurate search results based on individual customer preferences

537. A Knowledge Base supporting the Technological Research Project TR36035 on Climate Changes and Urban Development

ICIST 2013 Proceedings, 136-141
Devetaković Mirjana, Pucar Mila, Gajin Slavko
Abstract: The paper presents experiences and outcomes of the two years of development of the Knowledge Base supporting the ongoing Technological research project titled: SPATIAL, ENVIRONMENTAL, ENERGY AND SOCIAL ASPECTS OF DEVELOPING SETTLEMENTS AND CLIMATE CHANGE – MUTUAL IMPACTS, involving 50 researchers from several Serbian research institutions. Combining the knowledge from two different fields, the one of climate changes that is rapidly growing and enlarging in recent decades, and the one of urban development affected by a range of factors, the Knowledge Base is shaping a very specific knowledge domain, requiring a complex, iterative ontological engineering. After explaining the main technology behind the system and basic functionalities, the structure of contents is resented, as well as the system of further contents (re)structuring. In the final part of the paper, some of the issues and challenges are discussed, related to development and maintaining the knowledge resources supporting research in Serbia

538. Ontology API for web-enabled FDD system

ICIST 2013 Proceedings, 142-147
Batić Marko, Tomašević Nikola, Vraneš Sanja
Abstract: This paper focuses on the development of an Application Program Interface (API) towards the ontology based Airport Data Model (ADAM), used as a metadata layer within new generation of airport energy management and maintenance systems. Moreover, several examples of ontology API application are presented, clearly depicting its ability to serve in both locally and remotely stored ontology use case scenario. Therefore, the details describing how information is extracted, modified and inserted to the ontology are also provided. Finally, a practical procedure revealing how this API can be used for reasoning upon the stored knowledge is given

539. Conceptual model of open architecture for open government

ICIST 2013 Proceedings, 148-155
Petrušić Darko
Abstract: "Open Government" is a concept where society believes that the business of government should be open, efficient, and exposed to public scrutiny and monitoring. With developments of Internet technologies and e-services Open government idea is now a platform which promotes transparency, participation and collaboration. Information and data are now presented in an open, reusable format so that users can manipulate it in an effort to create new values. Main components of the Open government are Open Architecture, Open data and Open standards. This research proposes conceptual model of the Open Architecture (OA) in the context of the Open government. Main aim of this paper is to provide OG system designers with general guidelines for implementing OA with special attention on use of semantic technologies

540. Semantic interoperability for dynamin product-service business ecosystems

ICIST 2013 Proceedings, 156-160
Zdravković Milan, Panetto Hervé, Trajanović Miroslav
Abstract: Dynamic Product-Service Business Ecosystems (DPSBEs) are collaborative forms that aim to handle product-service business actions in a business ecosystem by creating, sharing, using and reusing information across functional teams and enterprise boundaries. DPSBEs depend on the ability of their members’ information systems to interoperate. This ability is related to making their semantics explicit and formal, so information can be interpreted and managed both by humans and systems. In this position paper, we establish the scientific background for the semantic interoperability for dynamic product-service business ecosystems.

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