INESC-ID

Displaying 1-6 of 6 results

  • White Papers // May 2011

    A Transport Protocol for Real-Time Streaming in Wireless Multimedia Sensor Networks

    In this paper, an implementation of a transport protocol to be used in Wireless Multimedia Sensor Networks (WMSNs) is presented. The objective of the protocol is to guarantee reliability by recovering lost packets while dealing with the limited energy, processing and memory capabilities of the devices typically used in these...

    Provided By INESC-ID

  • White Papers // Oct 2010

    Flexible and Efficient Resource Location in Large-Scale Systems

    Inherent to the cloud computing paradigm is the ability to adjust or deploy, on demand, services to face dynamic changes on the workload. Therefore, one needs an infrastructure to keep track of the resource allocation in the system and to efficiently locate the resources required to launch a new service,...

    Provided By INESC-ID

  • White Papers // Jun 2010

    Mobile Users Are Not Static Users on the Move

    This paper presents a measurement study of le system usage for a group of mobile devices users in different locations. The goal of this paper is to dispel the idea that the behaviour of mobile systems can be modelled as being homogenous across various locations. The paper shows that all...

    Provided By INESC-ID

  • White Papers // Dec 2009

    Observable Non-Sybil Quorums Construction in One-Hop Wireless Ad Hoc Networks

    The Sybil Attack is a serious threat to the secure and dependable operation of wireless ad hoc networks. This paper proposes an algorithm to provide each correct node in an one-hop wireless network with a quorum of non-Sybil identities from the neighbourhood. The quorums provided to different correct nodes may...

    Provided By INESC-ID

  • White Papers // Jul 2009

    Overnesia: A Resilient Overlay Network for Virtual Super-Peers

    Unstructured P2P networks have been widely used to implement resource location systems that support complex queries semantics. Unfortunately these systems usually rely on search algorithms based on some variant of flooding, which generate a significant amount of duplicate messages. An effective way to minimize the cost of query flooding in...

    Provided By INESC-ID

  • White Papers // Jun 2009

    Addressing Digital Preservation: Proposals for New Perspectives

    Digital preservation aims at maintaining digital objects accessible over long periods of time, ensuring the authenticity and integrity of these digital objects. In this paper, the authors propose three different approaches to address the digital preservation problem. First, they survey the main requirements specific to the preservation arena. Next, the...

    Provided By INESC-ID

  • White Papers // Jun 2009

    Addressing Digital Preservation: Proposals for New Perspectives

    Digital preservation aims at maintaining digital objects accessible over long periods of time, ensuring the authenticity and integrity of these digital objects. In this paper, the authors propose three different approaches to address the digital preservation problem. First, they survey the main requirements specific to the preservation arena. Next, the...

    Provided By INESC-ID

  • White Papers // Jul 2009

    Overnesia: A Resilient Overlay Network for Virtual Super-Peers

    Unstructured P2P networks have been widely used to implement resource location systems that support complex queries semantics. Unfortunately these systems usually rely on search algorithms based on some variant of flooding, which generate a significant amount of duplicate messages. An effective way to minimize the cost of query flooding in...

    Provided By INESC-ID

  • White Papers // Jun 2010

    Mobile Users Are Not Static Users on the Move

    This paper presents a measurement study of le system usage for a group of mobile devices users in different locations. The goal of this paper is to dispel the idea that the behaviour of mobile systems can be modelled as being homogenous across various locations. The paper shows that all...

    Provided By INESC-ID

  • White Papers // Oct 2010

    Flexible and Efficient Resource Location in Large-Scale Systems

    Inherent to the cloud computing paradigm is the ability to adjust or deploy, on demand, services to face dynamic changes on the workload. Therefore, one needs an infrastructure to keep track of the resource allocation in the system and to efficiently locate the resources required to launch a new service,...

    Provided By INESC-ID

  • White Papers // Dec 2009

    Observable Non-Sybil Quorums Construction in One-Hop Wireless Ad Hoc Networks

    The Sybil Attack is a serious threat to the secure and dependable operation of wireless ad hoc networks. This paper proposes an algorithm to provide each correct node in an one-hop wireless network with a quorum of non-Sybil identities from the neighbourhood. The quorums provided to different correct nodes may...

    Provided By INESC-ID

  • White Papers // May 2011

    A Transport Protocol for Real-Time Streaming in Wireless Multimedia Sensor Networks

    In this paper, an implementation of a transport protocol to be used in Wireless Multimedia Sensor Networks (WMSNs) is presented. The objective of the protocol is to guarantee reliability by recovering lost packets while dealing with the limited energy, processing and memory capabilities of the devices typically used in these...

    Provided By INESC-ID