University of Belgrade

Displaying 1-18 of 18 results

  • White Papers // Mar 2013

    Performance Evaluation of AN-VE: An Error Detection and Correction Code

    Several techniques have been proposed and employed to effectively detect and correct errors introduced during message transmission over a communication channel or at the destination domain during storage. Some of these techniques can detect: only single error, all unidirectional errors, only burst errors, any number of zero-to-one bit-flip errors as...

    Provided By University of Belgrade

  • White Papers // Aug 2012

    Traffic Modeling in Mobile Communication Networks

    This paper is focused on traffic modeling in mobile communication networks. This research is aimed at developing a traffic models that will predict a blocking probability for voice calls and handover calls blocking probability in mobile communication networks (GSM). The high number of block calls experience in mobile network, especially...

    Provided By University of Belgrade

  • White Papers // Jun 2012

    Software Verification and Graph Similarity for Automated Evaluation of Students' Assignments

    In this paper, the authors promote introducing software verification and control flow graph similarity measurement in automated evaluation of students' programs. They present a new grading framework that merges results obtained by combination of these two approaches with results obtained by automated testing, leading to improved quality and precision of...

    Provided By University of Belgrade

  • White Papers // Jun 2012

    Towards Understanding of Classes Versus Data Types in Conceptual Modeling and UML

    Traditional conceptual modeling and UML take different vague, ambiguous, and apparently incompatible approaches to making a distinction between two different entity types - classes and data types. In this paper, an in-depth theoretical study of these ambiguities and discrepancies is given and a new semantic interpretation is proposed for consolidation....

    Provided By University of Belgrade

  • White Papers // Jun 2012

    Software for Routing and Interconnection Simulation

    All forms of interconnection include connecting networks in order to provide communication between end-users of different networks and access to services provided by another operator. Interconnection is also applied for providing services that are not feasible without the interconnection, increasing operator's profitability. In order to test the basic hypothesis how...

    Provided By University of Belgrade

  • White Papers // Jun 2012

    Software for Optical Link Design Training Improvement

    Optical link design is one of the most important jobs that engineers of telecommunications traffic are trained to. In the course Optical Communication Systems students are, among others, trained to design an optical link. In this paper the outline of university course improvement is shown. In order to provide students...

    Provided By University of Belgrade

  • White Papers // Jun 2012

    The Effects of Ostentatious Calls in Gsm Networks

    In this paper, the authors investigate the possible effect of ostentatious (flash) calls in mobile communication networks (GSM) in Nigeria. The GSM network consists of physical and logical channels used to convey digit information signal from one network element to another. The Globacom network in Nigeria was investigated in a...

    Provided By University of Belgrade

  • White Papers // Jan 2012

    A Comparative Evaluation of Effort Estimation Methods in the Software Life Cycle

    Even though there are a number of software size and effort measurement methods proposed in this paper, they are not widely adopted in the practice. According to this paper, only 30% of software companies use measurement, mostly as a method for additional validation. In order to determine whether the objective...

    Provided By University of Belgrade

  • White Papers // Jan 2012

    A Genetic Algorithm for the Routing and Carrier Selection Problem

    In this paper, the authors present new evolutionary approach for solving the Routing and Carrier Selection Problem (RCSP). New encoding scheme is implemented with appropriate objective function. This approach in most cases keeps the feasibility of individuals by using specific representation and modified genetic operators. The numerical experiments were carried...

    Provided By University of Belgrade

  • White Papers // Jun 2011

    Inflation Persistence In Central And Southeastern Europe: Evidence From Time Series Approach

    The purpose of the paper is to measure inflation persistence in the following countries from the Central and Southeastern Europe: Slovakia, Czech Republic, Poland, Hungary, Romania and Serbia. Sample covers monthly data from January, 1995 to May, 2010 for Poland, Hungary and Slovakia, and a previous year, 1994, in the...

    Provided By University of Belgrade

  • White Papers // Nov 2010

    Solving the RWA Problem in WDM Optical Networks Using the BCO Meta-Heuristic

    This paper researches the Routing and Wavelength Assignment (RWA) problem in wavelength routed optical WDM networks with the wavelength conversion capability at different network nodes. The authors studied the static case in which all connection requests are known in advance, thus a routing decision can be made based on the...

    Provided By University of Belgrade

  • White Papers // Sep 2010

    E-Learning and Security Problems in Cloud Computing Environment

    Cloud computing has emerged as one of the fastest-growing segments of the information technology industry. The ability to leverage economies of scale, geographic distribution, open source software and automated systems to drive down costs makes cloud computing an attractive option for education. Development of information technology and constantly innovating educational...

    Provided By University of Belgrade

  • White Papers // Jul 2010

    Distributed Change Detection Based on a Consensus Algorithm

    In this paper a novel consensus based distributed recursive algorithm is proposed for real time change detection using sensor networks. Convergence of the algorithm to the optimal centralized solution defined by a weighted sum of the results of local signal processing is proved in the cases of constant and time...

    Provided By University of Belgrade

  • White Papers // May 2010

    On Performance of TCP and VoIP Traffic in Mobile WiMAX Networks

    The major performance objectives of the next-generation wireless communication systems are high link capacity and increase application/service performance from the user perspective. An attractive technology for providing broadband access is WiMAX network. For the network and application-level capacity and performance analysis, the authors first provide an overview of WiMAX network...

    Provided By University of Belgrade

  • White Papers // Apr 2010

    A Network Management Architecture Proposal for the G?ANT-NREN Environment

    G?ANTNREN network environment is an advanced communications infrastructure connecting end-institutions and end-users in different countries through several network layer organized in different legal entities. Seamless end-to-end service delivery in such multi-domain environment with the multitude of different technologies in use, operational procedures, network management subsystems and procedures is a significant...

    Provided By University of Belgrade

  • White Papers // Jan 2010

    A Holistic Approach to Securing Web Applications

    Protection of Web applications is an activity that requires constant monitoring of security threats as well as looking for solutions in this field. Since protection has moved from the lower layers of OSI models to the application layer and having in mind the fact that 75% of all the attacks...

    Provided By University of Belgrade

  • White Papers // Dec 2009

    Credits For Serbian Agriculture In The Transition Period

    The possibility for self-financing in agriculture is very small, primarily due to lower labour productivity leading to lower rate of surplus value. Therefore, in the development of Serbian agriculture, special importance is attached to other sources of financing such as: the Agrarian budget, i.e. credits of the Ministry of Agriculture,...

    Provided By University of Belgrade

  • White Papers // Nov 2009

    Benchmarking as a Telecommunications Policy Tool - Benefits From Using Composite Indices

    The dynamics of the telecommunications sector requires constant measuring, survey, analysis and comparison of the relevant performance features as a way to set the starting point in the adoption and implementation of the appropriate development strategy. At the same time, it is vital to create a concrete methodological procedure that...

    Provided By University of Belgrade

  • White Papers // May 2010

    On Performance of TCP and VoIP Traffic in Mobile WiMAX Networks

    The major performance objectives of the next-generation wireless communication systems are high link capacity and increase application/service performance from the user perspective. An attractive technology for providing broadband access is WiMAX network. For the network and application-level capacity and performance analysis, the authors first provide an overview of WiMAX network...

    Provided By University of Belgrade

  • White Papers // Nov 2009

    Benchmarking as a Telecommunications Policy Tool - Benefits From Using Composite Indices

    The dynamics of the telecommunications sector requires constant measuring, survey, analysis and comparison of the relevant performance features as a way to set the starting point in the adoption and implementation of the appropriate development strategy. At the same time, it is vital to create a concrete methodological procedure that...

    Provided By University of Belgrade

  • White Papers // Dec 2009

    Credits For Serbian Agriculture In The Transition Period

    The possibility for self-financing in agriculture is very small, primarily due to lower labour productivity leading to lower rate of surplus value. Therefore, in the development of Serbian agriculture, special importance is attached to other sources of financing such as: the Agrarian budget, i.e. credits of the Ministry of Agriculture,...

    Provided By University of Belgrade

  • White Papers // Nov 2010

    Solving the RWA Problem in WDM Optical Networks Using the BCO Meta-Heuristic

    This paper researches the Routing and Wavelength Assignment (RWA) problem in wavelength routed optical WDM networks with the wavelength conversion capability at different network nodes. The authors studied the static case in which all connection requests are known in advance, thus a routing decision can be made based on the...

    Provided By University of Belgrade

  • White Papers // Apr 2010

    A Network Management Architecture Proposal for the G?ANT-NREN Environment

    G?ANTNREN network environment is an advanced communications infrastructure connecting end-institutions and end-users in different countries through several network layer organized in different legal entities. Seamless end-to-end service delivery in such multi-domain environment with the multitude of different technologies in use, operational procedures, network management subsystems and procedures is a significant...

    Provided By University of Belgrade

  • White Papers // Jan 2012

    A Genetic Algorithm for the Routing and Carrier Selection Problem

    In this paper, the authors present new evolutionary approach for solving the Routing and Carrier Selection Problem (RCSP). New encoding scheme is implemented with appropriate objective function. This approach in most cases keeps the feasibility of individuals by using specific representation and modified genetic operators. The numerical experiments were carried...

    Provided By University of Belgrade

  • White Papers // Jan 2012

    A Comparative Evaluation of Effort Estimation Methods in the Software Life Cycle

    Even though there are a number of software size and effort measurement methods proposed in this paper, they are not widely adopted in the practice. According to this paper, only 30% of software companies use measurement, mostly as a method for additional validation. In order to determine whether the objective...

    Provided By University of Belgrade

  • White Papers // Jun 2012

    Towards Understanding of Classes Versus Data Types in Conceptual Modeling and UML

    Traditional conceptual modeling and UML take different vague, ambiguous, and apparently incompatible approaches to making a distinction between two different entity types - classes and data types. In this paper, an in-depth theoretical study of these ambiguities and discrepancies is given and a new semantic interpretation is proposed for consolidation....

    Provided By University of Belgrade

  • White Papers // Jun 2012

    Software Verification and Graph Similarity for Automated Evaluation of Students' Assignments

    In this paper, the authors promote introducing software verification and control flow graph similarity measurement in automated evaluation of students' programs. They present a new grading framework that merges results obtained by combination of these two approaches with results obtained by automated testing, leading to improved quality and precision of...

    Provided By University of Belgrade

  • White Papers // Jun 2012

    Software for Routing and Interconnection Simulation

    All forms of interconnection include connecting networks in order to provide communication between end-users of different networks and access to services provided by another operator. Interconnection is also applied for providing services that are not feasible without the interconnection, increasing operator's profitability. In order to test the basic hypothesis how...

    Provided By University of Belgrade

  • White Papers // Jun 2012

    Software for Optical Link Design Training Improvement

    Optical link design is one of the most important jobs that engineers of telecommunications traffic are trained to. In the course Optical Communication Systems students are, among others, trained to design an optical link. In this paper the outline of university course improvement is shown. In order to provide students...

    Provided By University of Belgrade

  • White Papers // Aug 2012

    Traffic Modeling in Mobile Communication Networks

    This paper is focused on traffic modeling in mobile communication networks. This research is aimed at developing a traffic models that will predict a blocking probability for voice calls and handover calls blocking probability in mobile communication networks (GSM). The high number of block calls experience in mobile network, especially...

    Provided By University of Belgrade

  • White Papers // Jun 2012

    The Effects of Ostentatious Calls in Gsm Networks

    In this paper, the authors investigate the possible effect of ostentatious (flash) calls in mobile communication networks (GSM) in Nigeria. The GSM network consists of physical and logical channels used to convey digit information signal from one network element to another. The Globacom network in Nigeria was investigated in a...

    Provided By University of Belgrade

  • White Papers // Mar 2013

    Performance Evaluation of AN-VE: An Error Detection and Correction Code

    Several techniques have been proposed and employed to effectively detect and correct errors introduced during message transmission over a communication channel or at the destination domain during storage. Some of these techniques can detect: only single error, all unidirectional errors, only burst errors, any number of zero-to-one bit-flip errors as...

    Provided By University of Belgrade

  • White Papers // Sep 2010

    E-Learning and Security Problems in Cloud Computing Environment

    Cloud computing has emerged as one of the fastest-growing segments of the information technology industry. The ability to leverage economies of scale, geographic distribution, open source software and automated systems to drive down costs makes cloud computing an attractive option for education. Development of information technology and constantly innovating educational...

    Provided By University of Belgrade

  • White Papers // Jan 2010

    A Holistic Approach to Securing Web Applications

    Protection of Web applications is an activity that requires constant monitoring of security threats as well as looking for solutions in this field. Since protection has moved from the lower layers of OSI models to the application layer and having in mind the fact that 75% of all the attacks...

    Provided By University of Belgrade

  • White Papers // Jul 2010

    Distributed Change Detection Based on a Consensus Algorithm

    In this paper a novel consensus based distributed recursive algorithm is proposed for real time change detection using sensor networks. Convergence of the algorithm to the optimal centralized solution defined by a weighted sum of the results of local signal processing is proved in the cases of constant and time...

    Provided By University of Belgrade

  • White Papers // Jun 2011

    Inflation Persistence In Central And Southeastern Europe: Evidence From Time Series Approach

    The purpose of the paper is to measure inflation persistence in the following countries from the Central and Southeastern Europe: Slovakia, Czech Republic, Poland, Hungary, Romania and Serbia. Sample covers monthly data from January, 1995 to May, 2010 for Poland, Hungary and Slovakia, and a previous year, 1994, in the...

    Provided By University of Belgrade