997,742 research outputs found

    Wageningen views on food security

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    Report that integrates the proceedings of a number of multidisciplinay expert workshops on food security at Wageningen U

    A unifying Petri net model of non-interference and non-deducibility information flow security

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    In this paper we introduce FIFO Information Flow Nets (FIFN) as a model for describing information flow security properties. The FIFN is based on Petri nets and has been derived from the work described in [Var89], [Var90] and [Rou86]. Using this new model, we present the information flow security properties Non-Interference between Places (which corresponds to Non-Interference) and Non-Deducibility on Views (which corresponds to Non-Deducibility on Inputs). Then we consider a very general composition operation and show that neither Non-Interference on Places nor Non-Deducibility on Views is preserved under this composition operation. This leads us to a new definition of information flow security referred to as the Feedback Non-Deducibility on Views. We then show that this definition is preserved under the composition operation. This leads us to a new definition of information flow security referred to as the Feedback Non-Deducibility on Views. We then show that this definition is preserved under the composition operation. We then show some similarities between this property and the notion of Non-Deducibility on Strategies

    Lebed' and Rodionov: Views on Russia's Security

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    Hispanics and the Social Security Debate

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    Examines the demographic and economic characteristics that define Latinos' stake in the Social Security debate as well as their views on major policy options. Includes Latino views of President Bush's proposals and other issues in the policy debate

    Participant Views of the Conservation Security Program

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    Land Economics/Use,

    Transforming Disability Policy: Testimony to the Senate Committee on FInance

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    Briefing paper prepared for the U.S. Senate Committee on Finance Hearing, Barriers to Work for Individuals Receiving Social Security Benefits, June 21, 2007. Personal views on transformation of disability policy

    Key Findings: California Young Adult Workforce Survey

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    Presents survey results on the views of the state's youth on the economy, job security, employment prospects, and influences on job choice, as well as their attitudes toward work in the healthcare sector

    SMOQE: A System for Providing Secure Access to XML

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    XML views have been widely used to enforce access control, support data integration, and speed up query answering. In many applications, e.g., XML security enforcement, it is prohibitively expensive to materialize and maintain a large number of views. Therefore, views are necessarily virtual. An immediate question then is how to answer queries on XML virtual views. A common approach is to rewrite a query on the view to an equivalent one on the underlying document, and evaluate the rewritten query. This is the approach used in the Secure MOdular Query Engine (SMOQE). The demo presents SMOQE, the first system to provide efficient support for answering queries over virtual and possibly recursively defined XML views. We demonstrate a set of novel techniques for the specification of views, the rewriting, evaluation and optimization of XML queries. Moreover, we provide insights into the internals of the engine by a set of visual tools. 1

    Taking Stock of Retirement: How Workers and Employers Assess Pensions, Trust, and the Economy

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    This survey polls workers and employers regarding their views on corporate scandals and the collapse of Enron, the impact of these events on trust in the workplace, and policy strategies needed to increase pension and retirement security
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