94,254 research outputs found

    Assured information sharing for ad-hoc collaboration

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    Collaborative information sharing tends to be highly dynamic and often ad hoc among organizations. The dynamic natures and sharing patterns in ad-hoc collaboration impose a need for a comprehensive and flexible approach to reflecting and coping with the unique access control requirements associated with the environment. This dissertation outlines a Role-based Access Management for Ad-hoc Resource Shar- ing framework (RAMARS) to enable secure and selective information sharing in the het- erogeneous ad-hoc collaborative environment. Our framework incorporates a role-based approach to addressing originator control, delegation and dissemination control. A special trust-aware feature is incorporated to deal with dynamic user and trust management, and a novel resource modeling scheme is proposed to support fine-grained selective sharing of composite data. As a policy-driven approach, we formally specify the necessary pol- icy components in our framework and develop access control policies using standardized eXtensible Access Control Markup Language (XACML). The feasibility of our approach is evaluated in two emerging collaborative information sharing infrastructures: peer-to- peer networking (P2P) and Grid computing. As a potential application domain, RAMARS framework is further extended and adopted in secure healthcare services, with a unified patient-centric access control scheme being proposed to enable selective and authorized sharing of Electronic Health Records (EHRs), accommodating various privacy protection requirements at different levels of granularity

    MOSAIC roadmap for mobile collaborative work related to health and wellbeing.

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    The objective of the MOSAIC project is to accelerate innovation in Mobile Worker Support Environments. For that purpose MOSAIC develops visions and illustrative scenarios for future collaborative workspaces involving mobile and location-aware working. Analysis of the scenarios is input to the process of road mapping with the purpose of developing strategies for R&D leading to deployment of innovative mobile work technologies and applications across different domains. One of the application domains where MOSAIC is active is health and wellbeing. This paper builds on another paper submitted to this same conference, which presents and discusses health care and wellbeing specific scenarios. The aim is to present an early form of a roadmap for validation

    Integrated Management: A Coastal Community Perspective

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    This paper was prepared for the Food and Agriculture Organisation of the United Nations Regional Workshops on Small-Scale Fisheries "Securing Sustainable Small-Scale Fisheries: Bringing together responsible fisheries and social development". It presents a review of what are seen as 'good practices' globally in policy and governance of small-scale fisheries, with a particular focus on addressing rights-based issues, viewed broadly as incorporating fishery rights, other rights to natural resources, and rights and entitlements in relation to human, social and economic rights. It draws extensively on the 1995 Code of Conduct for Responsible Fisheries and related technical guidelines, particularly those concerning small-scale fisheries and their roles in poverty alleviation and food security, and the human dimensions of the ecosystem approach to fisheries. The paper is also strongly informed by the papers prepared for and outcomes of the 2008 Global Conference on "Securing Sustainable Small-Scale Fisheries: Bringing together responsible fisheries and social development" and the relevant rights-oriented components of the 'Bangkok Statement' produced by the Civil Society Preparatory Workshop for the Global Conference. It also draws upon a set of research documents in the international literature focusing on small-scale fisheries and related policy issues [e.g., Allison et al. (2010), Charles (2009, 2011), McConney and Charles (2009); Kurien (2000, 2007)]

    Semantic-based policy engineering for autonomic systems

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    This paper presents some important directions in the use of ontology-based semantics in achieving the vision of Autonomic Communications. We examine the requirements of Autonomic Communication with a focus on the demanding needs of ubiquitous computing environments, with an emphasis on the requirements shared with Autonomic Computing. We observe that ontologies provide a strong mechanism for addressing the heterogeneity in user task requirements, managed resources, services and context. We then present two complimentary approaches that exploit ontology-based knowledge in support of autonomic communications: service-oriented models for policy engineering and dynamic semantic queries using content-based networks. The paper concludes with a discussion of the major research challenges such approaches raise

    Knowledge-Intensive Processes: Characteristics, Requirements and Analysis of Contemporary Approaches

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    Engineering of knowledge-intensive processes (KiPs) is far from being mastered, since they are genuinely knowledge- and data-centric, and require substantial flexibility, at both design- and run-time. In this work, starting from a scientific literature analysis in the area of KiPs and from three real-world domains and application scenarios, we provide a precise characterization of KiPs. Furthermore, we devise some general requirements related to KiPs management and execution. Such requirements contribute to the definition of an evaluation framework to assess current system support for KiPs. To this end, we present a critical analysis on a number of existing process-oriented approaches by discussing their efficacy against the requirements

    Intangible economy : How can investors deliver change in businesses? Lessons from nonprofit-business partnerships

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    Investors traditionally prioritised tangible outcomes (money, land, machinery) in order to protect their financial assets. However, the intangible economy (trust, human resources, information, reputation) that co-exists draws attention to new expectations that request the continuous, active and within the public sphere involvement of investors in order to protect their assets by prioritising intangible resources. The paper argues that investors in intangible outcomes who aim to achieve change in corporations share the same limitations within the financial and non-financial field. The case of Nonprofit-Business Partnerships is employed in order to demonstrate how change can be achieved. The role of investors is crucial in facilitating the shift from the tangible to the intangible economy. Investment in the intangible economy is a mechanism of co-determining the priority of responsibilities in the context of corporate social responsibility

    Data Confidentiality in Mobile Ad hoc Networks

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    Mobile ad hoc networks (MANETs) are self-configuring infrastructure-less networks comprised of mobile nodes that communicate over wireless links without any central control on a peer-to-peer basis. These individual nodes act as routers to forward both their own data and also their neighbours' data by sending and receiving packets to and from other nodes in the network. The relatively easy configuration and the quick deployment make ad hoc networks suitable the emergency situations (such as human or natural disasters) and for military units in enemy territory. Securing data dissemination between these nodes in such networks, however, is a very challenging task. Exposing such information to anyone else other than the intended nodes could cause a privacy and confidentiality breach, particularly in military scenarios. In this paper we present a novel framework to enhance the privacy and data confidentiality in mobile ad hoc networks by attaching the originator policies to the messages as they are sent between nodes. We evaluate our framework using the Network Simulator (NS-2) to check whether the privacy and confidentiality of the originator are met. For this we implemented the Policy Enforcement Points (PEPs), as NS-2 agents that manage and enforce the policies attached to packets at every node in the MANET.Comment: 12 page

    Innovation Systems, Radical Transformation, Step-by-Step: India in Light of China

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    The paper introduces a reform trajectory we call ?revolutionary incrementalism? in which partial and incremental measures add up to profound transformation. Recent advances in economic theory demonstrate that growth is not hard to start: it almost starts itself, somewhere, sometimes. But keeping it going is not easy: doing so requires attention to the context of growth binding constraints and situation-specific ways to resolve them. The same goes for institutions: it is almost always possible to find some that are working. The issue is using the ones that work to improve those that don?t. The thrust of the proposal is to rely on variation within existing institutions as the ?Archimedean lever? with which to leverage reform and change. India?s public sector record for implementing and coordinating innovation efforts can be notoriously fragmented and inefficient but there are some parts that perform better than others, and there are recognized pockets of excellence virtually within every ministry or public sector organization. The same internal diversity is even more visible in the private sector. Importantly from a policy perspective, better performing segments of public sector and better performing segments of productive sector are beginning to join forces in a variety of search ...innovation systems, heterogeneity of institutions, radical incrementalism, search networks, open economy industrial policy
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