Federal University of Rio de Janeiro

Displaying 1-12 of 12 results

  • White Papers // Jan 2013

    Towards a Taxonomy for Cloud Computing From an e-Science Perspective

    In the last few years, cloud computing has emerged as a computational paradigm that enables scientists to build more complex scientific applications to manage large data sets or high-performance applications, based on distributed resources. By following this paradigm, scientists may use distributed resources (infrastructure, storage, databases, and applications) without having...

    Provided By Federal University of Rio de Janeiro

  • White Papers // May 2011

    A Case Study on Software as Service Approach to Model- Driven Development

    Business demands have been increasing for the past years due to the ever growing need to sustain competitive advantage. As a consequence, business processes require more agile and flexible Information Technology (IT) assets that can be easily and swiftly customized to meet their changing demands. Such challenges are continuously faced...

    Provided By Federal University of Rio de Janeiro

  • White Papers // May 2011

    A Case Study on Software as Service Approach to Model-Driven Development

    Business demands have been increasing for the past years due to the ever growing need to sustain competitive advantage. As a consequence, business processes require more agile and flexible Information Technology (IT) assets that can be easily and swiftly customized to meet their changing demands. Such challenges are continuously faced...

    Provided By Federal University of Rio de Janeiro

  • White Papers // May 2011

    A Tool for Modeling Strategy and Aligned Portfolio Selection

    A company depends on the definition and implementation of a set of projects aligned with the vision established by its senior management to accomplish its strategies. To this set of projects is given the name of portfolio. This paper implements a collaborative tool to support the construction and selection of...

    Provided By Federal University of Rio de Janeiro

  • White Papers // Jul 2010

    Reflections on the Modularity of Business Process Models: The Case for Introducing the Aspect-Oriented Paradigm

    The Aspect-Oriented (AO) paradigm is first proposed to deal with programming modularity issues, but different researchers have been exploring AO concepts in the designing and definition of software systems. The goal of this paper is to discuss and present a proposal that addresses the application of AO concepts to the...

    Provided By Federal University of Rio de Janeiro

  • White Papers // Jul 2010

    Geographic Routing in IEEE 802.11 Wireless Networks With Channel Width Adaptation

    In this paper, the authors propose two geographic routing metrics applied to wireless mesh networks that consider the use of channel width adaptation. The proposed metrics are evaluated through simulations jointly with a next hop channel width selection algorithm. The results show that the proposed metrics and algorithm generate greater...

    Provided By Federal University of Rio de Janeiro

  • White Papers // Jun 2010

    Routing in IEEE 802.11 Wireless Mesh Networks With Channel Width Adaptation

    Selecting routes of higher throughput in wireless mesh networks plays an important hole and has been considered in several works. Previous studies establish routing metrics that do not consider the possibility of using new technologies such as Software Defined Radio (SDR) that allows transmission channels of different widths. In wireless...

    Provided By Federal University of Rio de Janeiro

  • White Papers // Mar 2010

    Radio Channel Model of Wireless Sensor Networks Operating in 2.4 GHz ISM Band

    This paper presents a novel signal propagation model of Wireless Sensor Network (WSN) for outdoor open environments. This model can be used in simulators and also in WSN services as localization discovery. The model here proposed produces results with higher accuracy when compared to the models existing in the literature....

    Provided By Federal University of Rio de Janeiro

  • White Papers // Jan 2010

    A Flexible Web Service Based Architecture for Wireless Sensor Networks

    The current sensor networks are assumed to be designed for specific applications, having strongly coupled data communication protocols. The future sensor networks are envisioned as comprising heterogeneous devices assisting to a large range of applications. To achieve this goal, a new architecture approach is needed, having application specific features separated...

    Provided By Federal University of Rio de Janeiro

  • White Papers // Jul 2009

    Highly Efficient Reconfigurable Routers in Networks-on-Chip

    NoC designs are based on a compromise of latency, power dissipation or energy, usually defined at design time. However, setting all parameters at design time can cause either excessive power dissipation (originated by router underutilization), or a higher latency. The situation worsens whenever the application changes its communication pattern, i.e.,...

    Provided By Federal University of Rio de Janeiro

  • White Papers // Mar 2009

    CCS-Based Dynamic Logics for Communicating Concurrent Programs

    This paper presents three increasingly expressive Dynamic Logics in which the programs are CCS processes (sCCS-PDL, CCS-PDL and XCCSPDL). Their goal is to reason about properties of concurrent programs and systems described using CCS. In order to accomplish that, CCS's operators and constructions are added to a basic modal logic...

    Provided By Federal University of Rio de Janeiro

  • White Papers // May 2008

    A Domain-Driven Approach for Enterprise Development, Using BPM, MDA, SOA and Web Services

    This paper presents preliminary study results of a prototype architecture created with the purpose of using a domain-driven approach to shorten the development of software projects. It is accepted that domain based development is playing an important role on IT projects today. The following discussion presents a way of using...

    Provided By Federal University of Rio de Janeiro

  • White Papers // May 2011

    A Tool for Modeling Strategy and Aligned Portfolio Selection

    A company depends on the definition and implementation of a set of projects aligned with the vision established by its senior management to accomplish its strategies. To this set of projects is given the name of portfolio. This paper implements a collaborative tool to support the construction and selection of...

    Provided By Federal University of Rio de Janeiro

  • White Papers // May 2011

    A Case Study on Software as Service Approach to Model- Driven Development

    Business demands have been increasing for the past years due to the ever growing need to sustain competitive advantage. As a consequence, business processes require more agile and flexible Information Technology (IT) assets that can be easily and swiftly customized to meet their changing demands. Such challenges are continuously faced...

    Provided By Federal University of Rio de Janeiro

  • White Papers // Jan 2013

    Towards a Taxonomy for Cloud Computing From an e-Science Perspective

    In the last few years, cloud computing has emerged as a computational paradigm that enables scientists to build more complex scientific applications to manage large data sets or high-performance applications, based on distributed resources. By following this paradigm, scientists may use distributed resources (infrastructure, storage, databases, and applications) without having...

    Provided By Federal University of Rio de Janeiro

  • White Papers // May 2008

    A Domain-Driven Approach for Enterprise Development, Using BPM, MDA, SOA and Web Services

    This paper presents preliminary study results of a prototype architecture created with the purpose of using a domain-driven approach to shorten the development of software projects. It is accepted that domain based development is playing an important role on IT projects today. The following discussion presents a way of using...

    Provided By Federal University of Rio de Janeiro

  • White Papers // May 2011

    A Case Study on Software as Service Approach to Model-Driven Development

    Business demands have been increasing for the past years due to the ever growing need to sustain competitive advantage. As a consequence, business processes require more agile and flexible Information Technology (IT) assets that can be easily and swiftly customized to meet their changing demands. Such challenges are continuously faced...

    Provided By Federal University of Rio de Janeiro

  • White Papers // Jul 2010

    Reflections on the Modularity of Business Process Models: The Case for Introducing the Aspect-Oriented Paradigm

    The Aspect-Oriented (AO) paradigm is first proposed to deal with programming modularity issues, but different researchers have been exploring AO concepts in the designing and definition of software systems. The goal of this paper is to discuss and present a proposal that addresses the application of AO concepts to the...

    Provided By Federal University of Rio de Janeiro

  • White Papers // Jan 2010

    A Flexible Web Service Based Architecture for Wireless Sensor Networks

    The current sensor networks are assumed to be designed for specific applications, having strongly coupled data communication protocols. The future sensor networks are envisioned as comprising heterogeneous devices assisting to a large range of applications. To achieve this goal, a new architecture approach is needed, having application specific features separated...

    Provided By Federal University of Rio de Janeiro

  • White Papers // Mar 2009

    CCS-Based Dynamic Logics for Communicating Concurrent Programs

    This paper presents three increasingly expressive Dynamic Logics in which the programs are CCS processes (sCCS-PDL, CCS-PDL and XCCSPDL). Their goal is to reason about properties of concurrent programs and systems described using CCS. In order to accomplish that, CCS's operators and constructions are added to a basic modal logic...

    Provided By Federal University of Rio de Janeiro

  • White Papers // Jul 2009

    Highly Efficient Reconfigurable Routers in Networks-on-Chip

    NoC designs are based on a compromise of latency, power dissipation or energy, usually defined at design time. However, setting all parameters at design time can cause either excessive power dissipation (originated by router underutilization), or a higher latency. The situation worsens whenever the application changes its communication pattern, i.e.,...

    Provided By Federal University of Rio de Janeiro

  • White Papers // Jun 2010

    Routing in IEEE 802.11 Wireless Mesh Networks With Channel Width Adaptation

    Selecting routes of higher throughput in wireless mesh networks plays an important hole and has been considered in several works. Previous studies establish routing metrics that do not consider the possibility of using new technologies such as Software Defined Radio (SDR) that allows transmission channels of different widths. In wireless...

    Provided By Federal University of Rio de Janeiro

  • White Papers // Jul 2010

    Geographic Routing in IEEE 802.11 Wireless Networks With Channel Width Adaptation

    In this paper, the authors propose two geographic routing metrics applied to wireless mesh networks that consider the use of channel width adaptation. The proposed metrics are evaluated through simulations jointly with a next hop channel width selection algorithm. The results show that the proposed metrics and algorithm generate greater...

    Provided By Federal University of Rio de Janeiro

  • White Papers // Mar 2010

    Radio Channel Model of Wireless Sensor Networks Operating in 2.4 GHz ISM Band

    This paper presents a novel signal propagation model of Wireless Sensor Network (WSN) for outdoor open environments. This model can be used in simulators and also in WSN services as localization discovery. The model here proposed produces results with higher accuracy when compared to the models existing in the literature....

    Provided By Federal University of Rio de Janeiro