94,513 research outputs found

    On the Provision of Public Goods on Networks: Incentives, Exit Equilibrium, and Applications to Cyber .

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    Attempts to improve the state of cyber-security have been on the rise over the past years. The importance of incentivizing better security decisions by users in the current landscape is two-fold: it not only helps users protect themselves against attacks, but also provides positive externalities to others interacting with them, as a protected user is less likely to become compromised and be used to propagate attacks against other entities. Therefore, security can be viewed as a public good. This thesis takes a game-theoretic approach to understanding the theoretical underpinnings of users' incentives in the provision of public goods, and in particular, cyber-security. We analyze the strategic interactions of users in the provision of security as a non-excludable public good. We propose the notion of exit equilibrium to describe users' outside options from mechanisms for incentivizing the adoption of better security decisions, and use it to highlight the crucial effect of outside options on the design of incentive mechanisms for improving the state of cyber-security. We further focus on the general problem of public good provision games on networks. We identify necessary and sufficient conditions on the structure of the network for the existence and uniqueness of the Nash equilibrium in these games. We show that previous results in the literature can be recovered as special cases of our result. We provide a graph-theoretical interpretation of users' efforts at the Nash equilibria, Pareto efficient outcomes, and semi-cooperative equilibria of these games, by linking users' effort decisions to their centralities in the interaction network. Using this characterization, we separate the effects of users' dependencies and influences (outgoing and incoming edges, respectively) on their effort levels, and uncover an alternating effect over walks of different length in the network. We also propose the design of inter-temporal incentives in a particular type of security games, namely, security information sharing agreement. We show that either public or private assessments can be used in designing incentives for participants to disclose their information in these agreements. Finally, we present a method for crowdsourcing reputation that can be useful in attaining assessments of users' efforts in security games.PhDElectrical Engineering: SystemsUniversity of Michigan, Horace H. Rackham School of Graduate Studieshttp://deepblue.lib.umich.edu/bitstream/2027.42/133328/1/naghizad_1.pd

    Framework for a CIAT Strategic Initiative: Comparative Research on Restoration of Degraded Lands

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    Is There a Role for the United Nations Economic Commission for Europe in Conflict Prevention and Peacebuilding

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    The focus of this essay is to enquire as to what role UNECE can play in conflict prevention and peacebuilding. The historic role of the UNECE in bridging the East-West divide and guiding the transition process of the former planned economies is testimony to the importance of this type of activity. During the transition process, political and economic systems often had to be recreated from scratch and sometimes in newly formed nation States. The lessons learned during this process, especially regarding the importance of good governance, provide the basis of the UNECE’s contribution to conflict prevention and post-conflict peacebuilding. The regional significance of peacebuilding and thus the role of a regional body such as UNECE is stressed by explaining that conflicts usually have major transboundary impacts such as migration, environmental degradation, disrupted transportation corridors, or broken trade links. The authors also provide an overview of the institutional initiatives that are being developed within the various UN agencies and other international organizations emphasizing their activities in South-east Europe and Central Asia. The essay ends by considering the future role of UNECE in creating a framework convention or standards, on the basis of agreed principles for post-conflict governance.Peace building, Europe, transition economies, institutional cooperation

    A call for action to the fish world: a guide to fish-related paragraphs of the plan of implementation of the world summit on sustainable development

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    It contains tables and a selected verbatim set of the paragraphs and sub paragraphs of the recent Plan of Implementation of the 2002 World Summit on Sustainable Development (WSSD) held in Johannesburg, South Africa, from 26 August-4 September 2002. The selected paragraphs and sub-paragarphs are those most relevant to the sustainable use, management and conservation of fish and other living aquatic resources.Living resources, Fisheries, Sustainability, Resource conservation

    Low-Carbon Technologies in the Post-Bali Period: Accelerating their Development and Deployment. CEPS ECP Report No. 4, 4 December 2007

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    This report analyses the very broad issue of technology development, demonstration and diffusion with a view to identifying the key elements of a complementary global technology track in the post-2012 framework. It identifies a number of immediate and concrete steps that can be taken to provide content and a structure for such a track. The report features three sections dealing with innovation and technology, investment in developing countries and investment and finance, followed by an analysis of the various initiatives being taken on technology both within and outside the United Nations Framework Convention on Climate Change (UNFCCC). A final section presents ideas for the way forward followed by brief concluding remarks
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