University of Perugia

Displaying 1-10 of 10 results

  • White Papers // May 2013

    A Technique for Handling Range and Fuzzy Match Queries on Encrypted Data

    Data is an important asset of today's dynamically operating organizations and their businesses. Data is usually stored in databases. An important issue for IT professionals is to secure such data from unauthorized access and intruders. For protecting business centric data, many levels of security are used. Among these levels, data...

    Provided By University of Perugia

  • White Papers // Jan 2013

    Structuring Intellectual Capital as an Element of Virtual Organization in the SME Clusters

    This paper is to explore the intellectual capital as an element of virtual organization in the SME clusters. Effective organization and management of intellectual capital is particularly required for the SMEs in clusters joining together to form a virtual relationship. It could work alongside the other important elements of virtual...

    Provided By University of Perugia

  • White Papers // Jul 2011

    Performance of Alamouti Space-Time Coded OFDM With Carrier Frequency Offset

    The authors investigate the error probability for Alamouti space-time coded Orthogonal Frequency-Division Multiplexing (OFDM) systems with Carrier Frequency Offset (CFO) and multipath fading channels. Their main assumptions are: frequency-selective Rayleigh fading, a single receive antenna, and coherent detection. They derive new closed-form results for the (symbol or bit) error probability,...

    Provided By University of Perugia

  • White Papers // Jul 2011

    Approximating Constraint Propagation in Datalog

    The authors present a technique exploiting Datalog with aggregates to improve the performance of programs with arithmetic (in)equalities. Their approach employs a source-to-source program transformation which approximates the propagation technique from Constraint Programming. The experimental evaluation of the approach shows good run time speedups on a range of non-recursive as...

    Provided By University of Perugia

  • White Papers // Jun 2010

    TOKEN: Trustable Keystroke-Based Authentication for Web-Based Applications on Smartphones

    Smartphone's are increasingly being used to store personal information as well as to access sensitive data from the Internet and the cloud. Establishment of the identity of a user requesting information from Smartphone's is a prerequisite for secure systems in such scenarios. In the past, keystroke-based user identification has been...

    Provided By University of Perugia

  • White Papers // May 2010

    Productivity Growth In Europe And The US: A Sectoral Study

    This paper describes recent trends in productivity growth in the EU and the US. By adopting a sectoral perspective, the authors achieve a deeper understanding of the compositional patterns of aggregate growth and shed light on the reasons why the EU productivity has lagged behind the US during the period...

    Provided By University of Perugia

  • White Papers // Feb 2010

    Performance-Related Pay, Unions And Productivity In Italy: Evidence From Quantile Regressions

    This paper analyses the effects on productivity of Performance-Related Payments (PRP) and unions, and examines to what extent heterogeneity between firms characterises these influences. For the Italian economy, the paper presents firm-level quintile regressions for Total Factor Productivity (TFP) and controls for various observed characteristics of firms, worker composition and...

    Provided By University of Perugia

  • White Papers // Jun 2009

    Fairness as a QoS Measure For Web Services

    Service Oriented Architecture (SOAs) are the current technology for business to business interactions. SOAs are component-based architectures, characterized by reusability, modularization and composition, usually offered via HTTP (web services) and often equipped with a Quality of Service (QoS) measure. For example if the required service is routing a possible measure...

    Provided By University of Perugia

  • White Papers // Jun 2009

    Soft Constraints for Quality Aspects in Service Oriented Architectures

    The authors propose the use of Soft Constraints as a natural way to model Service Oriented Architecture. In the framework, constraints are used to model components and connectors and constraint aggregation is used to represent their interactions. The "Quality of a service" is measured and considered when performing queries to...

    Provided By University of Perugia

  • White Papers // Jun 2009

    A Comparative Analysis Of Different Business Ethics In The Perspective Of The Common Good

    The paper concerns the connection between different typologies of business ethics (kantian, utilitarian, aristotelic) and the alternative vision of economic development, company's organizational and managerial context together with interest in Common Good more or less associated to profit to which they have given rise. In this comparison virtue ethics stands...

    Provided By University of Perugia

  • White Papers // Jun 2009

    Fairness as a QoS Measure For Web Services

    Service Oriented Architecture (SOAs) are the current technology for business to business interactions. SOAs are component-based architectures, characterized by reusability, modularization and composition, usually offered via HTTP (web services) and often equipped with a Quality of Service (QoS) measure. For example if the required service is routing a possible measure...

    Provided By University of Perugia

  • White Papers // Jun 2009

    Soft Constraints for Quality Aspects in Service Oriented Architectures

    The authors propose the use of Soft Constraints as a natural way to model Service Oriented Architecture. In the framework, constraints are used to model components and connectors and constraint aggregation is used to represent their interactions. The "Quality of a service" is measured and considered when performing queries to...

    Provided By University of Perugia

  • White Papers // Jun 2009

    A Comparative Analysis Of Different Business Ethics In The Perspective Of The Common Good

    The paper concerns the connection between different typologies of business ethics (kantian, utilitarian, aristotelic) and the alternative vision of economic development, company's organizational and managerial context together with interest in Common Good more or less associated to profit to which they have given rise. In this comparison virtue ethics stands...

    Provided By University of Perugia

  • White Papers // Feb 2010

    Performance-Related Pay, Unions And Productivity In Italy: Evidence From Quantile Regressions

    This paper analyses the effects on productivity of Performance-Related Payments (PRP) and unions, and examines to what extent heterogeneity between firms characterises these influences. For the Italian economy, the paper presents firm-level quintile regressions for Total Factor Productivity (TFP) and controls for various observed characteristics of firms, worker composition and...

    Provided By University of Perugia

  • White Papers // May 2010

    Productivity Growth In Europe And The US: A Sectoral Study

    This paper describes recent trends in productivity growth in the EU and the US. By adopting a sectoral perspective, the authors achieve a deeper understanding of the compositional patterns of aggregate growth and shed light on the reasons why the EU productivity has lagged behind the US during the period...

    Provided By University of Perugia

  • White Papers // Jul 2011

    Approximating Constraint Propagation in Datalog

    The authors present a technique exploiting Datalog with aggregates to improve the performance of programs with arithmetic (in)equalities. Their approach employs a source-to-source program transformation which approximates the propagation technique from Constraint Programming. The experimental evaluation of the approach shows good run time speedups on a range of non-recursive as...

    Provided By University of Perugia

  • White Papers // Jul 2011

    Performance of Alamouti Space-Time Coded OFDM With Carrier Frequency Offset

    The authors investigate the error probability for Alamouti space-time coded Orthogonal Frequency-Division Multiplexing (OFDM) systems with Carrier Frequency Offset (CFO) and multipath fading channels. Their main assumptions are: frequency-selective Rayleigh fading, a single receive antenna, and coherent detection. They derive new closed-form results for the (symbol or bit) error probability,...

    Provided By University of Perugia

  • White Papers // Jan 2013

    Structuring Intellectual Capital as an Element of Virtual Organization in the SME Clusters

    This paper is to explore the intellectual capital as an element of virtual organization in the SME clusters. Effective organization and management of intellectual capital is particularly required for the SMEs in clusters joining together to form a virtual relationship. It could work alongside the other important elements of virtual...

    Provided By University of Perugia

  • White Papers // May 2013

    A Technique for Handling Range and Fuzzy Match Queries on Encrypted Data

    Data is an important asset of today's dynamically operating organizations and their businesses. Data is usually stored in databases. An important issue for IT professionals is to secure such data from unauthorized access and intruders. For protecting business centric data, many levels of security are used. Among these levels, data...

    Provided By University of Perugia

  • White Papers // Jun 2010

    TOKEN: Trustable Keystroke-Based Authentication for Web-Based Applications on Smartphones

    Smartphone's are increasingly being used to store personal information as well as to access sensitive data from the Internet and the cloud. Establishment of the identity of a user requesting information from Smartphone's is a prerequisite for secure systems in such scenarios. In the past, keystroke-based user identification has been...

    Provided By University of Perugia