University of Klagenfurt

Displaying 1-22 of 22 results

  • White Papers // Sep 2012

    Property-based Typing for RDF-Access

    Programming semantic data on the web is an emerging problem since the data representation follows quite flexible and extensible data models like the graph data model of RDF, where predicates denote relations between resources. While this flexible representation style is an essential feature of the semantic web, common procedural and...

    Provided By University of Klagenfurt

  • White Papers // Jul 2012

    Predictive Software Measures Based on Z Specifications - A Case Study

    Estimating the effort and quality of a system is a critical step at the beginning of every software project. It is necessary to have reliable ways of calculating these measures, and, it is even better when the calculation can be done as early as possible in the development life-cycle. Having...

    Provided By University of Klagenfurt

  • White Papers // Apr 2012

    Cloud Computing for Standard ERP Systems: Reference Framework and Research Agenda

    Cloud Computing is a topic that has gained momentum in the last years. Current studies show that an increasing number of companies is evaluating the promised advantages and considering making use of cloud services. In this paper, the authors investigate the phenomenon of cloud computing and its importance for the...

    Provided By University of Klagenfurt

  • White Papers // Feb 2012

    Doubly-Anonymous Crowds: Using Secret-Sharing to Achieve Sender-And Receiver-Anonymity

    Anonymous communication is usually achieved by using overlay networks and public-key cryptography. Besides well-established protocols, based on onion routing, various competing solutions have been proposed in the literature. In this paper, the authors extend the Crowds system by providing sender and adjustable receiver anonymity. Their solution is robust against a...

    Provided By University of Klagenfurt

  • White Papers // Aug 2011

    FedBench: A Benchmark Suite for Federated Semantic Data Query Processing

    In this paper, the authors present FedBench, a comprehensive benchmark suite for testing and analyzing the performance of federated query processing strategies on semantic data. The major challenge lies in the heterogeneity of semantic data use cases, where applications may face different settings at both the data and query level,...

    Provided By University of Klagenfurt

  • White Papers // Jun 2011

    Impact of Relay Selection Overhead in Cooperative Diversity Protocols

    Cooperative diversity uses relays to assist source-destination transmissions to reduce link outage rates in multipath fading environments. In this paper, the authors model relay selection as a semi-Markov process to analyze the impact of relay selection overhead on throughput, delay, and jitter in a simple scenario. Results show that the...

    Provided By University of Klagenfurt

  • White Papers // Feb 2011

    Throughput and Energy Efficiency of Cooperative Diversity With Relay Selection

    Cooperative diversity is a communication technique where a relay node provides signal diversity to the destination by retransmitting the signal received from the source. To find an optimal relay and maximize the resulting performance, a relay selection procedure is used with channel state information as a selection metric. In this...

    Provided By University of Klagenfurt

  • White Papers // Jan 2011

    Diversity Schemes in Interference-Limited Wireless Networks With Low-Cost Radios

    The authors investigate the impact of time diversity and space-time diversity schemes on the traffic capacity of large-scale wireless networks with low-cost radios. Especially, they analyze the tradeoff between relaying gain and increased interference due to additional traffic. The results of a simulation-based study imply that cooperative relaying with selection...

    Provided By University of Klagenfurt

  • White Papers // Dec 2010

    A Method of Authentication for Quantum Networks

    Quantum cryptography offers a way of key agreement, which is unbreakable by an eavesdropping adversary. Authentication is of crucial importance, as perfect secrecy is worthless if the identity of the addressee cannot be ensured before sending important information. Message authentication has been studied thoroughly, but no approach seems to be...

    Provided By University of Klagenfurt

  • White Papers // Aug 2010

    Distributed Task Allocation for Visual Sensor Networks: A Market-Based Approach

    This paper in progress presents a novel distributed task allocation method for visual sensor networks based on a computational market. The authors' proposed method automatically adapts the QoS levels of the individual tasks, depending on the resource requirements and the user-defined interest level of the service. Therefore, they define virtual...

    Provided By University of Klagenfurt

  • White Papers // Jul 2010

    Incremental Cooperative Relaying in Time-Correlated Rayleigh Fading Channels

    Incremental relaying is a communication technique enabling cooperative diversity in wireless networks. The relay forwards a correctly decoded packet only after getting the feedback that the destination failed to receive the data directly from the source. The authors model an incremental relaying protocol as a time-discrete finite-state Markov process and...

    Provided By University of Klagenfurt

  • White Papers // Jul 2010

    Cooperative Multicast With Low-Cost Radios

    A simple cooperative diversity technique is applied to point-to-multipoint communication in wireless medium suffering from Rayleigh block fading. Such a concept is especially interesting if low-cost radios, which have no advanced capabilities for fading mitigation, are used. This paper analyzes the communication reliability in terms of outage and delivery ratio,...

    Provided By University of Klagenfurt

  • White Papers // Apr 2010

    The Geobashing Architecture for Location-Based Mobile Massive Multiplayer Online Games

    The current trend towards more mobility will increasingly affect the gaming market over the next years. Location-based Mobile Massive Multiplayer Online Games (MMMOG) will be a new paradigm in the gaming industry. Since building a game for a massive amount of mobile players is a challenging task, the authors have...

    Provided By University of Klagenfurt

  • White Papers // Feb 2010

    How Does a Faulty Node Disturb Decentralized Slot Synchronization Over Wireless Networks?

    Decentralized synchronization requires cooperation among network participants so that all nodes agree on common reference timing. What happens if one node does not follow local synchronization rules and randomly transmits? This paper studies the resilience of two classes of decentralized slot synchronization against random disturbances, and quantifies the impact of...

    Provided By University of Klagenfurt

  • White Papers // Oct 2009

    Power Aware Communication in Wireless Pervasive Smart Camera Networks

    Visual sensor networks bring together the research domains of smart cameras and wireless sensor networks. Focusing on power consumption and long-term deployments, typical sensor nodes come with limited computing power and low communication performance. A smart camera that performs onboard video analysis and exchanges data with adjacent nodes has higher...

    Provided By University of Klagenfurt

  • White Papers // Sep 2009

    Context-aware Collaborative Creation of Semantic Points of Interest as Linked Data

    The csxPOI system enables its users to collaboratively create, share, and modify points of interest, which describe geographic places with explicit semantic properties instead of using vague annotations such as tags. Users can edit their own points of interest and those shared by others, but also adapt the structure of...

    Provided By University of Klagenfurt

  • White Papers // Jul 2009

    A Pervasive Smart Camera Network Architecture Applied for Multi-Camera Object Classification

    Visual sensor networks are an emerging research area with the goal of using cameras as pervasive and affordable sensing and processing devices. This paper presents a pervasive smart camera platform which is built from off-the-shelf hardware and software components. The hardware platform is comprised of an OMAP 3530 processor, 128...

    Provided By University of Klagenfurt

  • White Papers // Apr 2009

    Future Requirements of ERP Software From the Vendors' Point of View

    CIOs and CEOs are confronted with the key question of choosing the right ERP software for their company. The evaluation process tends to be painstaking as the outcome usually affects the competitiveness and thus the future of the company itself. Packaged software has become so powerful in recent years that...

    Provided By University of Klagenfurt

  • White Papers // Mar 2009

    CoRe-MAC: A MAC-Protocol for Cooperative Relaying in Wireless Networks

    Cooperative relaying protocols introduce overhead due to relay selection and resource reservation compared to non-cooperative transmission which needs to be at least compensated by its benefits. In this paper, the authors present a MAC protocol for relay selection and cooperative communication as an extension to CSMA/CA which addresses resource reservation,...

    Provided By University of Klagenfurt

  • White Papers // Jul 2008

    Experiences While Selecting, Adapting and Implementing ERP Systems in SMEs: A Case Study

    Enterprise Resource Planning (ERP) systems are important for all kinds of enterprises. The selection and implementation of such systems are very difficult and many projects do not meet their expectations. While large companies have financial and human resources to engage in such a project, the situation for smaller sized enterprises...

    Provided By University of Klagenfurt

  • White Papers // Jun 2008

    PersoBOX: A Personalization Engine Between ERP System and Web Frontend

    The demand for personalization functions in e-shops is increasing steadily. In order to fulfill customer requirements best and to stimulate the customer's buying experience positively, companies are aiming at an easy technical solution to the integration of ERP master data, CRM data, and transactional data from web shops. The current...

    Provided By University of Klagenfurt

  • White Papers // Jun 2007

    Current Trends and Challenges in Electronic Procurement: An Empirical Study

    This paper presents results from a longitudinal study on the use of ICT for B2B-related business processes in large Swiss companies. The findings show that reduction of purchase prices is the top priority when goal-setting in procurement. Electronic orders and invoices are the business documents that are most often exchanged...

    Provided By University of Klagenfurt

  • White Papers // Jul 2009

    A Pervasive Smart Camera Network Architecture Applied for Multi-Camera Object Classification

    Visual sensor networks are an emerging research area with the goal of using cameras as pervasive and affordable sensing and processing devices. This paper presents a pervasive smart camera platform which is built from off-the-shelf hardware and software components. The hardware platform is comprised of an OMAP 3530 processor, 128...

    Provided By University of Klagenfurt

  • White Papers // Dec 2010

    A Method of Authentication for Quantum Networks

    Quantum cryptography offers a way of key agreement, which is unbreakable by an eavesdropping adversary. Authentication is of crucial importance, as perfect secrecy is worthless if the identity of the addressee cannot be ensured before sending important information. Message authentication has been studied thoroughly, but no approach seems to be...

    Provided By University of Klagenfurt

  • White Papers // Jan 2011

    Diversity Schemes in Interference-Limited Wireless Networks With Low-Cost Radios

    The authors investigate the impact of time diversity and space-time diversity schemes on the traffic capacity of large-scale wireless networks with low-cost radios. Especially, they analyze the tradeoff between relaying gain and increased interference due to additional traffic. The results of a simulation-based study imply that cooperative relaying with selection...

    Provided By University of Klagenfurt

  • White Papers // Jun 2011

    Impact of Relay Selection Overhead in Cooperative Diversity Protocols

    Cooperative diversity uses relays to assist source-destination transmissions to reduce link outage rates in multipath fading environments. In this paper, the authors model relay selection as a semi-Markov process to analyze the impact of relay selection overhead on throughput, delay, and jitter in a simple scenario. Results show that the...

    Provided By University of Klagenfurt

  • White Papers // Feb 2011

    Throughput and Energy Efficiency of Cooperative Diversity With Relay Selection

    Cooperative diversity is a communication technique where a relay node provides signal diversity to the destination by retransmitting the signal received from the source. To find an optimal relay and maximize the resulting performance, a relay selection procedure is used with channel state information as a selection metric. In this...

    Provided By University of Klagenfurt

  • White Papers // Jul 2010

    Incremental Cooperative Relaying in Time-Correlated Rayleigh Fading Channels

    Incremental relaying is a communication technique enabling cooperative diversity in wireless networks. The relay forwards a correctly decoded packet only after getting the feedback that the destination failed to receive the data directly from the source. The authors model an incremental relaying protocol as a time-discrete finite-state Markov process and...

    Provided By University of Klagenfurt

  • White Papers // Feb 2010

    How Does a Faulty Node Disturb Decentralized Slot Synchronization Over Wireless Networks?

    Decentralized synchronization requires cooperation among network participants so that all nodes agree on common reference timing. What happens if one node does not follow local synchronization rules and randomly transmits? This paper studies the resilience of two classes of decentralized slot synchronization against random disturbances, and quantifies the impact of...

    Provided By University of Klagenfurt

  • White Papers // Jul 2010

    Cooperative Multicast With Low-Cost Radios

    A simple cooperative diversity technique is applied to point-to-multipoint communication in wireless medium suffering from Rayleigh block fading. Such a concept is especially interesting if low-cost radios, which have no advanced capabilities for fading mitigation, are used. This paper analyzes the communication reliability in terms of outage and delivery ratio,...

    Provided By University of Klagenfurt

  • White Papers // Mar 2009

    CoRe-MAC: A MAC-Protocol for Cooperative Relaying in Wireless Networks

    Cooperative relaying protocols introduce overhead due to relay selection and resource reservation compared to non-cooperative transmission which needs to be at least compensated by its benefits. In this paper, the authors present a MAC protocol for relay selection and cooperative communication as an extension to CSMA/CA which addresses resource reservation,...

    Provided By University of Klagenfurt

  • White Papers // Oct 2009

    Power Aware Communication in Wireless Pervasive Smart Camera Networks

    Visual sensor networks bring together the research domains of smart cameras and wireless sensor networks. Focusing on power consumption and long-term deployments, typical sensor nodes come with limited computing power and low communication performance. A smart camera that performs onboard video analysis and exchanges data with adjacent nodes has higher...

    Provided By University of Klagenfurt

  • White Papers // Aug 2010

    Distributed Task Allocation for Visual Sensor Networks: A Market-Based Approach

    This paper in progress presents a novel distributed task allocation method for visual sensor networks based on a computational market. The authors' proposed method automatically adapts the QoS levels of the individual tasks, depending on the resource requirements and the user-defined interest level of the service. Therefore, they define virtual...

    Provided By University of Klagenfurt

  • White Papers // Apr 2010

    The Geobashing Architecture for Location-Based Mobile Massive Multiplayer Online Games

    The current trend towards more mobility will increasingly affect the gaming market over the next years. Location-based Mobile Massive Multiplayer Online Games (MMMOG) will be a new paradigm in the gaming industry. Since building a game for a massive amount of mobile players is a challenging task, the authors have...

    Provided By University of Klagenfurt

  • White Papers // Feb 2012

    Doubly-Anonymous Crowds: Using Secret-Sharing to Achieve Sender-And Receiver-Anonymity

    Anonymous communication is usually achieved by using overlay networks and public-key cryptography. Besides well-established protocols, based on onion routing, various competing solutions have been proposed in the literature. In this paper, the authors extend the Crowds system by providing sender and adjustable receiver anonymity. Their solution is robust against a...

    Provided By University of Klagenfurt

  • White Papers // Jul 2012

    Predictive Software Measures Based on Z Specifications - A Case Study

    Estimating the effort and quality of a system is a critical step at the beginning of every software project. It is necessary to have reliable ways of calculating these measures, and, it is even better when the calculation can be done as early as possible in the development life-cycle. Having...

    Provided By University of Klagenfurt

  • White Papers // Jul 2008

    Experiences While Selecting, Adapting and Implementing ERP Systems in SMEs: A Case Study

    Enterprise Resource Planning (ERP) systems are important for all kinds of enterprises. The selection and implementation of such systems are very difficult and many projects do not meet their expectations. While large companies have financial and human resources to engage in such a project, the situation for smaller sized enterprises...

    Provided By University of Klagenfurt

  • White Papers // Jun 2007

    Current Trends and Challenges in Electronic Procurement: An Empirical Study

    This paper presents results from a longitudinal study on the use of ICT for B2B-related business processes in large Swiss companies. The findings show that reduction of purchase prices is the top priority when goal-setting in procurement. Electronic orders and invoices are the business documents that are most often exchanged...

    Provided By University of Klagenfurt

  • White Papers // Aug 2011

    FedBench: A Benchmark Suite for Federated Semantic Data Query Processing

    In this paper, the authors present FedBench, a comprehensive benchmark suite for testing and analyzing the performance of federated query processing strategies on semantic data. The major challenge lies in the heterogeneity of semantic data use cases, where applications may face different settings at both the data and query level,...

    Provided By University of Klagenfurt

  • White Papers // Sep 2012

    Property-based Typing for RDF-Access

    Programming semantic data on the web is an emerging problem since the data representation follows quite flexible and extensible data models like the graph data model of RDF, where predicates denote relations between resources. While this flexible representation style is an essential feature of the semantic web, common procedural and...

    Provided By University of Klagenfurt

  • White Papers // Sep 2009

    Context-aware Collaborative Creation of Semantic Points of Interest as Linked Data

    The csxPOI system enables its users to collaboratively create, share, and modify points of interest, which describe geographic places with explicit semantic properties instead of using vague annotations such as tags. Users can edit their own points of interest and those shared by others, but also adapt the structure of...

    Provided By University of Klagenfurt

  • White Papers // Apr 2009

    Future Requirements of ERP Software From the Vendors' Point of View

    CIOs and CEOs are confronted with the key question of choosing the right ERP software for their company. The evaluation process tends to be painstaking as the outcome usually affects the competitiveness and thus the future of the company itself. Packaged software has become so powerful in recent years that...

    Provided By University of Klagenfurt

  • White Papers // Apr 2012

    Cloud Computing for Standard ERP Systems: Reference Framework and Research Agenda

    Cloud Computing is a topic that has gained momentum in the last years. Current studies show that an increasing number of companies is evaluating the promised advantages and considering making use of cloud services. In this paper, the authors investigate the phenomenon of cloud computing and its importance for the...

    Provided By University of Klagenfurt

  • White Papers // Jun 2008

    PersoBOX: A Personalization Engine Between ERP System and Web Frontend

    The demand for personalization functions in e-shops is increasing steadily. In order to fulfill customer requirements best and to stimulate the customer's buying experience positively, companies are aiming at an easy technical solution to the integration of ERP master data, CRM data, and transactional data from web shops. The current...

    Provided By University of Klagenfurt