University of Zagreb

Displaying 1-29 of 29 results

  • White Papers // Dec 2012

    Phenomenology Tools on Cloud Infrastructures Using OpenStack

    The authors present a new environment for computations in particle physics phenomenology employing recent developments in cloud computing. On this environment users can create and manage "Virtual" machines on which the phenomenology codes/tools can be deployed easily in an automated way. They analyze the performance of this environment based on...

    Provided By University of Zagreb

  • White Papers // Dec 2012

    Survey and Challenges of QoE Management Issues in Wireless Networks

    With the move towards converged all-IP wireless network environments, managing end-user Quality of Experience (QoE) poses a challenging task, aimed at meeting high user expectations and requirements regarding reliable and cost effective communication, access to any service, anytime and anywhere, and across multiple operator domains. In this paper, the authors...

    Provided By University of Zagreb

  • White Papers // Mar 2012

    CAOVA: A Car Accident Ontology for VANETs

    In a near future, vehicles will be provided with a variety of new sensors capable of gathering information from their surroundings. These vehicles will also be capable of sharing the harvested information via Vehicular Ad hoc NETworks (VANETs) with nearby vehicles, or with the emergency services in case of an...

    Provided By University of Zagreb

  • White Papers // Feb 2012

    A Visual Programming Language for Drawing and Executing Flowcharts

    With recent advances in graphical user interfaces, more and more tasks on computers have become easier to perform. Out of the belief that creating computer programs can also be one of them, Visual Programming Languages (VPLs) have emerged. The goal of VPLs is to shift a part of work from...

    Provided By University of Zagreb

  • White Papers // Jan 2012

    Modeling of Session Initiation Protocol Invite Transaction Using Colored Petri Nets

    Wireless mobile communications have experienced the phenomenal growth through last decades. The advances in wireless mobile technologies have brought about a demand for high quality multimedia applications and services. For such applications and services to work, signaling protocol is required for establishing, maintaining and tearing down multimedia sessions. The Session...

    Provided By University of Zagreb

  • White Papers // Apr 2011

    Power Management in Wireless Sensor Networks With High-Consuming Sensors

    Wireless Sensor Networks (WSNs), usually battery-powered, thus very energy-constrained, present energy efficiency as the main challenge. To reduce the overall energy consumption of the network, research community has been tackling Power Management (PM) techniques on different levels - sensing, communication, computation and energy harvesting. Usually in WSNs the communication consumes...

    Provided By University of Zagreb

  • White Papers // Jan 2011

    Optimizing Cognitive Ad-Hoc Wireless Networks for Green Communications

    This paper investigates the potential of smart routing in minimization of radio environment pollution in cognitive ad-hoc wireless networks. A wireless ad-hoc sensor network based on the IEEE 802.11b standard is used as a simulation testbed to determine statistical distribution of interference levels. Three different routing methods are used -...

    Provided By University of Zagreb

  • White Papers // Dec 2010

    Do Macroeconomic Factors Matter For Stock Returns? Evidence From Estimating A Multifactor Model On The Croatian Market

    Factor models observe the sensitivity of an asset return as a function of one or more factors. This paper analyzes returns on fourteen stocks of the Croatian capital market in the period from January 2004 to October 2009 using inflation, industrial production, interest rates, market index and oil prices as...

    Provided By University of Zagreb

  • White Papers // Oct 2010

    Physical-Layer Attacks in Optical WDM Networks and Attack-Aware Network Planning

    The high data rates employed by WDM transparent optical networks make them most suitable for today's growing network traffic demands. However, their transparency imposes several vulnerabilities in network security, enabling malicious signals to propagate from the source to other parts of the network without losing their attacking capabilities. Furthermore, detecting,...

    Provided By University of Zagreb

  • White Papers // Mar 2010

    Managing Innovation Systems In Transition Economies

    Successfully managing innovations has become the basic precondition for the development of both companies and national economies. At the national level governments are forming innovation systems whose primary goal is to create conditions at which science and technology can flourish and then transfer their findings trough private sector into new...

    Provided By University of Zagreb

  • White Papers // Nov 2009

    Virtual Topology Design and Flow Routing in Optical Networks Under Multi-Hour Traffic Demand

    This paper addresses the problem of finding a static virtual topology design and flow routing in transparent optical WDM networks under a time-varying (multi-hour) traffic demand. Four variants of the problem are considered, using fixed or dynamically adaptable (i.e., variable) flow routing, which can be splittable or unsplittable. The authors'...

    Provided By University of Zagreb

  • White Papers // Nov 2009

    Central Bank Independence: The Case Of Croatia

    A trend of increasing role of central bank's independence took place in the most of modern economies. The Central Bank Independence (CBI) is seen as a way of bringing economy to a higher level. It is argued that an independent Central Bank is more credible and moreover, that the higher...

    Provided By University of Zagreb

  • White Papers // Oct 2009

    Towards a General Definition of Biometric Systems

    A foundation for closing the gap between biometrics in the narrower and the broader perspective is presented trough a conceptualization of biometric systems in both perspectives. A clear distinction between verification, identification and classification systems is made as well as shown that there are additional classes of biometric systems. In...

    Provided By University of Zagreb

  • White Papers // Aug 2009

    New Approach to Optical Networks Security: Attack-Aware Routing and Wavelength Assignment

    Security issues and attack management in transparent WDM (Wavelength Division Multiplexing) optical networks has become of prime importance to network operators due to the high data rates involved and the vulnerabilities associated with transparency. Deliberate physical layer attacks, such as highpowered jamming, can seriously degrade network performance and must be...

    Provided By University of Zagreb

  • White Papers // Aug 2009

    The MAgNet: Agent-Based Middleware Enabling Social Networking for Mobile Users

    Now-a-days social network services play an important role in users' everyday lives. This is especially emphasized in lives of users that belong to Generation Y. Young people often communicate and share various personal information with their family, friends or colleagues through virtual communities that are based on social relations. By...

    Provided By University of Zagreb

  • White Papers // Apr 2009

    Global Crisis And National Responses Case Of Croatia

    In terms of its effects so far the global economic crisis is stronger and deeper than the economic disturbances at the time of the Great Depression. Additionally, it takes place under the conditions of a much higher level of connection and complexity of interrelations compared to the events in the...

    Provided By University of Zagreb

  • White Papers // Apr 2009

    MILP Formulations for Scheduling Lightpaths Under Periodic Traffic

    This paper addresses offline virtual topology design in transparent optical networks under given periodic traffic. The authors call this planning problem "Scheduled Virtual Topology Design". Two problem variants are considered: for a network based on non-reconfigurable equipment and for a network based on reconfigurable equipment. Two MILP (Mixed Integer Linear...

    Provided By University of Zagreb

  • White Papers // Mar 2009

    Dynamic Bandwidth Allocation and Quality of Service Guarantees in Passive Optical Networks

    This paper gives an overview of current work and research conducted on passive optical networks, namely on dynamic bandwidth allocation and providing quality of service guarantees. The main areas of interest for investigating dynamic bandwidth allocation are grant sizing, grant scheduling and optical network unit queue scheduling. Regarding quality of...

    Provided By University of Zagreb

  • White Papers // Feb 2009

    Conflict Management Styles In Croatian Enterprises- The Relationship Between Individual Characteristics And Conflict Handling Styles

    The objective of the paper, except determining the dominant conflict handling style in Croatian organizational setting, was to explore individual characteristics affecting the choice of conflict resolution style of Croatian employees. Therefore, the variables of gender, age, level of education achieved, field of work, hierarchical level, marital status and parenthood...

    Provided By University of Zagreb

  • White Papers // Feb 2009

    Effective Corporate Income Tax Burden In Croatia

    This paper provides an analysis of Corporate Income Tax (CIT) in Croatia. Given the fact that Croatia implements a consumption-based CIT and a number of tax incentives, the purpose of this paper is to establish the level of effective tax burden on companies in Croatia. In addition to analyzing the...

    Provided By University of Zagreb

  • White Papers // Feb 2009

    (I)rationality Of Investors On Croatian Stock Market? Explaining The Impact Of American Indices On Croatian Stock Market

    This paper aims to detect and explain co-movements and spillover effects between American and Croatian stock markets. Following the methodology and findings of Erjavec and Cota (2007), the dependency of the Corbel index to the main US indices (DJIA, S&P500, NASDAQ) is further examined. The econometric study is widened, and...

    Provided By University of Zagreb

  • White Papers // Oct 2008

    Business Ethics In Transition Countries? Cluster Analysis Of Behavior And Attitudes

    The aim of this paper is to obtain a better understanding of people's attitudes toward ethical issues. The authors explored four ethics issues: attitude on ethical issues in general, information manipulation, environmental issues, and law issues. This study examines variation in attitudes toward ethical issues based on data collected from...

    Provided By University of Zagreb

  • White Papers // Oct 2008

    Tourism, Welfare And Real Estate Market In Small Open Economy: The Case Of Croatia

    The paper investigates effects of the tourism boom on the real estate market in Croatia. According to the general equilibrium models of the tourism intensive small open economy, the most important benefit of the tourism is reflected in the fixed-factors rents, namely real estate market rents. This paper investigates results...

    Provided By University of Zagreb

  • White Papers // Oct 2008

    Terms And Conditions For The Implementation Of Inflation Targeting In Croatia

    Since the introduction of the Stabilization program in 1993, the Croatian National Bank has been following the monetary strategy of exchange rate anchor. During the first several years (from 1993 to 1997) this monetary strategy achieved acceptable results, accompanied with a low inflation rate and high GDP growth rates. However,...

    Provided By University of Zagreb

  • White Papers // Oct 2008

    Integrating Internal Communications, Human Resource Management And Marketing Concepts Into The New Internal Marketing Philosophy

    Successful companies attach great importance to human resource management and internal communications; because they are aware of the value of those activities and of strategic advantage they can bring to the organization. They should also realize that it is necessary to live internal marketing philosophy, if they stream to offer...

    Provided By University of Zagreb

  • White Papers // Oct 2008

    How Do Croatian Companies Make Corporate Risk Management Decisions: Evidence From The Field

    According to the Capital Asset Pricing Model and the Modigliani-Miller theorem, corporate risk management is irrelevant to the value of the firm. However, it is apparent that managers are constantly engaged in hedging activities that are directed at the reduction of corporate risks. As an explanation for this clash between...

    Provided By University of Zagreb

  • White Papers // Oct 2008

    A Review Of The Rationales For Corporate Risk Management: Fashion Or The Need?

    This paper presents the extensive literature survey based both on theoretical rationales for hedging as well as the empirical evidence that support the implications of the theory regarding the arguments for the corporate risk management relevance and its influence on the company's value. The survey of literature presented in this...

    Provided By University of Zagreb

  • White Papers // Oct 2008

    Structural Breaks And Purchasing Power Parity In The CEE And Post-War Former Yugoslav States

    In this paper the authors investigate purchasing power parity in the CEE and post-War former-Yugoslav states during EU integration process 1994-2006. This work stems from longer term tests of real exchange rate convergence in the former Yugoslavia. This period is of interest on two fronts: First, it investigates real exchange...

    Provided By University of Zagreb

  • White Papers // Aug 2008

    Waveform Optimization in UWB Antenna Systems Based on Prolate Spheroidal Wave Signal Spaces

    Antenna waveform distortion evaluation in Ultra-WideBand (UWB) communications has become an important concern due to the possible degradation in system performance. Fidelity is the typical measure to take into account distortion for single waveforms. In this paper, a new method designed for computing approximately the optimum waveform in a two...

    Provided By University of Zagreb

  • White Papers // Dec 2012

    Survey and Challenges of QoE Management Issues in Wireless Networks

    With the move towards converged all-IP wireless network environments, managing end-user Quality of Experience (QoE) poses a challenging task, aimed at meeting high user expectations and requirements regarding reliable and cost effective communication, access to any service, anytime and anywhere, and across multiple operator domains. In this paper, the authors...

    Provided By University of Zagreb

  • White Papers // Aug 2009

    New Approach to Optical Networks Security: Attack-Aware Routing and Wavelength Assignment

    Security issues and attack management in transparent WDM (Wavelength Division Multiplexing) optical networks has become of prime importance to network operators due to the high data rates involved and the vulnerabilities associated with transparency. Deliberate physical layer attacks, such as highpowered jamming, can seriously degrade network performance and must be...

    Provided By University of Zagreb

  • White Papers // Mar 2009

    Dynamic Bandwidth Allocation and Quality of Service Guarantees in Passive Optical Networks

    This paper gives an overview of current work and research conducted on passive optical networks, namely on dynamic bandwidth allocation and providing quality of service guarantees. The main areas of interest for investigating dynamic bandwidth allocation are grant sizing, grant scheduling and optical network unit queue scheduling. Regarding quality of...

    Provided By University of Zagreb

  • White Papers // Oct 2008

    Business Ethics In Transition Countries? Cluster Analysis Of Behavior And Attitudes

    The aim of this paper is to obtain a better understanding of people's attitudes toward ethical issues. The authors explored four ethics issues: attitude on ethical issues in general, information manipulation, environmental issues, and law issues. This study examines variation in attitudes toward ethical issues based on data collected from...

    Provided By University of Zagreb

  • White Papers // Oct 2008

    Tourism, Welfare And Real Estate Market In Small Open Economy: The Case Of Croatia

    The paper investigates effects of the tourism boom on the real estate market in Croatia. According to the general equilibrium models of the tourism intensive small open economy, the most important benefit of the tourism is reflected in the fixed-factors rents, namely real estate market rents. This paper investigates results...

    Provided By University of Zagreb

  • White Papers // Oct 2008

    Terms And Conditions For The Implementation Of Inflation Targeting In Croatia

    Since the introduction of the Stabilization program in 1993, the Croatian National Bank has been following the monetary strategy of exchange rate anchor. During the first several years (from 1993 to 1997) this monetary strategy achieved acceptable results, accompanied with a low inflation rate and high GDP growth rates. However,...

    Provided By University of Zagreb

  • White Papers // Oct 2008

    Integrating Internal Communications, Human Resource Management And Marketing Concepts Into The New Internal Marketing Philosophy

    Successful companies attach great importance to human resource management and internal communications; because they are aware of the value of those activities and of strategic advantage they can bring to the organization. They should also realize that it is necessary to live internal marketing philosophy, if they stream to offer...

    Provided By University of Zagreb

  • White Papers // Oct 2008

    How Do Croatian Companies Make Corporate Risk Management Decisions: Evidence From The Field

    According to the Capital Asset Pricing Model and the Modigliani-Miller theorem, corporate risk management is irrelevant to the value of the firm. However, it is apparent that managers are constantly engaged in hedging activities that are directed at the reduction of corporate risks. As an explanation for this clash between...

    Provided By University of Zagreb

  • White Papers // Oct 2008

    A Review Of The Rationales For Corporate Risk Management: Fashion Or The Need?

    This paper presents the extensive literature survey based both on theoretical rationales for hedging as well as the empirical evidence that support the implications of the theory regarding the arguments for the corporate risk management relevance and its influence on the company's value. The survey of literature presented in this...

    Provided By University of Zagreb

  • White Papers // Oct 2008

    Structural Breaks And Purchasing Power Parity In The CEE And Post-War Former Yugoslav States

    In this paper the authors investigate purchasing power parity in the CEE and post-War former-Yugoslav states during EU integration process 1994-2006. This work stems from longer term tests of real exchange rate convergence in the former Yugoslavia. This period is of interest on two fronts: First, it investigates real exchange...

    Provided By University of Zagreb

  • White Papers // Feb 2009

    (I)rationality Of Investors On Croatian Stock Market? Explaining The Impact Of American Indices On Croatian Stock Market

    This paper aims to detect and explain co-movements and spillover effects between American and Croatian stock markets. Following the methodology and findings of Erjavec and Cota (2007), the dependency of the Corbel index to the main US indices (DJIA, S&P500, NASDAQ) is further examined. The econometric study is widened, and...

    Provided By University of Zagreb

  • White Papers // Feb 2009

    Effective Corporate Income Tax Burden In Croatia

    This paper provides an analysis of Corporate Income Tax (CIT) in Croatia. Given the fact that Croatia implements a consumption-based CIT and a number of tax incentives, the purpose of this paper is to establish the level of effective tax burden on companies in Croatia. In addition to analyzing the...

    Provided By University of Zagreb

  • White Papers // Feb 2009

    Conflict Management Styles In Croatian Enterprises- The Relationship Between Individual Characteristics And Conflict Handling Styles

    The objective of the paper, except determining the dominant conflict handling style in Croatian organizational setting, was to explore individual characteristics affecting the choice of conflict resolution style of Croatian employees. Therefore, the variables of gender, age, level of education achieved, field of work, hierarchical level, marital status and parenthood...

    Provided By University of Zagreb

  • White Papers // Nov 2009

    Central Bank Independence: The Case Of Croatia

    A trend of increasing role of central bank's independence took place in the most of modern economies. The Central Bank Independence (CBI) is seen as a way of bringing economy to a higher level. It is argued that an independent Central Bank is more credible and moreover, that the higher...

    Provided By University of Zagreb

  • White Papers // Mar 2010

    Managing Innovation Systems In Transition Economies

    Successfully managing innovations has become the basic precondition for the development of both companies and national economies. At the national level governments are forming innovation systems whose primary goal is to create conditions at which science and technology can flourish and then transfer their findings trough private sector into new...

    Provided By University of Zagreb

  • White Papers // Dec 2010

    Do Macroeconomic Factors Matter For Stock Returns? Evidence From Estimating A Multifactor Model On The Croatian Market

    Factor models observe the sensitivity of an asset return as a function of one or more factors. This paper analyzes returns on fourteen stocks of the Croatian capital market in the period from January 2004 to October 2009 using inflation, industrial production, interest rates, market index and oil prices as...

    Provided By University of Zagreb

  • White Papers // Oct 2009

    Towards a General Definition of Biometric Systems

    A foundation for closing the gap between biometrics in the narrower and the broader perspective is presented trough a conceptualization of biometric systems in both perspectives. A clear distinction between verification, identification and classification systems is made as well as shown that there are additional classes of biometric systems. In...

    Provided By University of Zagreb

  • White Papers // Apr 2009

    Global Crisis And National Responses Case Of Croatia

    In terms of its effects so far the global economic crisis is stronger and deeper than the economic disturbances at the time of the Great Depression. Additionally, it takes place under the conditions of a much higher level of connection and complexity of interrelations compared to the events in the...

    Provided By University of Zagreb

  • White Papers // Jan 2011

    Optimizing Cognitive Ad-Hoc Wireless Networks for Green Communications

    This paper investigates the potential of smart routing in minimization of radio environment pollution in cognitive ad-hoc wireless networks. A wireless ad-hoc sensor network based on the IEEE 802.11b standard is used as a simulation testbed to determine statistical distribution of interference levels. Three different routing methods are used -...

    Provided By University of Zagreb

  • White Papers // Apr 2011

    Power Management in Wireless Sensor Networks With High-Consuming Sensors

    Wireless Sensor Networks (WSNs), usually battery-powered, thus very energy-constrained, present energy efficiency as the main challenge. To reduce the overall energy consumption of the network, research community has been tackling Power Management (PM) techniques on different levels - sensing, communication, computation and energy harvesting. Usually in WSNs the communication consumes...

    Provided By University of Zagreb

  • White Papers // Oct 2010

    Physical-Layer Attacks in Optical WDM Networks and Attack-Aware Network Planning

    The high data rates employed by WDM transparent optical networks make them most suitable for today's growing network traffic demands. However, their transparency imposes several vulnerabilities in network security, enabling malicious signals to propagate from the source to other parts of the network without losing their attacking capabilities. Furthermore, detecting,...

    Provided By University of Zagreb

  • White Papers // Nov 2009

    Virtual Topology Design and Flow Routing in Optical Networks Under Multi-Hour Traffic Demand

    This paper addresses the problem of finding a static virtual topology design and flow routing in transparent optical WDM networks under a time-varying (multi-hour) traffic demand. Four variants of the problem are considered, using fixed or dynamically adaptable (i.e., variable) flow routing, which can be splittable or unsplittable. The authors'...

    Provided By University of Zagreb

  • White Papers // Apr 2009

    MILP Formulations for Scheduling Lightpaths Under Periodic Traffic

    This paper addresses offline virtual topology design in transparent optical networks under given periodic traffic. The authors call this planning problem "Scheduled Virtual Topology Design". Two problem variants are considered: for a network based on non-reconfigurable equipment and for a network based on reconfigurable equipment. Two MILP (Mixed Integer Linear...

    Provided By University of Zagreb

  • White Papers // Jan 2012

    Modeling of Session Initiation Protocol Invite Transaction Using Colored Petri Nets

    Wireless mobile communications have experienced the phenomenal growth through last decades. The advances in wireless mobile technologies have brought about a demand for high quality multimedia applications and services. For such applications and services to work, signaling protocol is required for establishing, maintaining and tearing down multimedia sessions. The Session...

    Provided By University of Zagreb

  • White Papers // Feb 2012

    A Visual Programming Language for Drawing and Executing Flowcharts

    With recent advances in graphical user interfaces, more and more tasks on computers have become easier to perform. Out of the belief that creating computer programs can also be one of them, Visual Programming Languages (VPLs) have emerged. The goal of VPLs is to shift a part of work from...

    Provided By University of Zagreb

  • White Papers // Aug 2009

    The MAgNet: Agent-Based Middleware Enabling Social Networking for Mobile Users

    Now-a-days social network services play an important role in users' everyday lives. This is especially emphasized in lives of users that belong to Generation Y. Young people often communicate and share various personal information with their family, friends or colleagues through virtual communities that are based on social relations. By...

    Provided By University of Zagreb

  • White Papers // Mar 2012

    CAOVA: A Car Accident Ontology for VANETs

    In a near future, vehicles will be provided with a variety of new sensors capable of gathering information from their surroundings. These vehicles will also be capable of sharing the harvested information via Vehicular Ad hoc NETworks (VANETs) with nearby vehicles, or with the emergency services in case of an...

    Provided By University of Zagreb

  • White Papers // Aug 2008

    Waveform Optimization in UWB Antenna Systems Based on Prolate Spheroidal Wave Signal Spaces

    Antenna waveform distortion evaluation in Ultra-WideBand (UWB) communications has become an important concern due to the possible degradation in system performance. Fidelity is the typical measure to take into account distortion for single waveforms. In this paper, a new method designed for computing approximately the optimum waveform in a two...

    Provided By University of Zagreb

  • White Papers // Dec 2012

    Phenomenology Tools on Cloud Infrastructures Using OpenStack

    The authors present a new environment for computations in particle physics phenomenology employing recent developments in cloud computing. On this environment users can create and manage "Virtual" machines on which the phenomenology codes/tools can be deployed easily in an automated way. They analyze the performance of this environment based on...

    Provided By University of Zagreb