Academic literature on the topic 'DPMP [Distributed Policy Management Protocol]'
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Journal articles on the topic "DPMP [Distributed Policy Management Protocol]"
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Guerrero Alonso, Juan Ignacio, Enrique Personal, Sebastián García, Antonio Parejo, Mansueto Rossi, Antonio García, Federico Delfino, Ricardo Pérez, and Carlos León. "Flexibility Services Based on OpenADR Protocol for DSO Level." Sensors 20, no. 21 (November 3, 2020): 6266. http://dx.doi.org/10.3390/s20216266.
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Nowadays, Distribution System Operators are increasing the digitalization of their smart grids, making it possible to measure and manage their state at any time. However, with the massive eruption of change-distributed generation (e.g., renewable resources, electric vehicles), the grid operation have become more complex, requiring specific technologies to balance it. In this sense, the demand-side management is one of its techniques; the demand response is a promising approach for providing Flexibility Services (FSs) and complying with the regulatory directives of the energy market. As a solution, this paper proposes the use of the OpenADR (Open Automated Demand Response) standard protocol in combination with a Decentralized Permissioned Market Place (DPMP) based on Blockchain. On one hand, OpenADR hierarchical architecture based on distributed nodes provides communication between stakeholders, adding monitoring and management services. Further, this architecture is compatible with an aggregator schema that guarantees the compliance with the strictest regulatory framework (i.e., European market). On the other hand, DPMP is included at different levels of this architecture, providing a global solution to Flexibility Service Providers (FSP) that can be adapted depending on the regulation of a specific country. As a proof of concept, this paper shows the result of a real experimental case, which implements a Capacity Bidding Program where the OpenADR protocol is used as a communication method to control and monitor energy consumption. In parallel, the proposed DPMP based on Blockchain makes it possible to manage the incentives of FSs, enabling the integration of local and global markets.
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Benaouda, A., and N. Benaouda. "A Preventive Multi-agent based Policy for Distributed Hardware Resource Balancing." Engineering, Technology & Applied Science Research 10, no. 3 (June 7, 2020): 5824–31. http://dx.doi.org/10.48084/etasr.3548.
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The success of a business, especially a multi-site extended enterprise, depends on the good management of all its distributed resources. It is difficult for a company to be successful if it does not have a reliable and optimal management of resources by avoiding overstocking of certain resources on a site Sitem ∈ E, and at the same time, the sub-storing of the same resources on another site Sitep ∈ E. In both cases, there is a lack of profit. In this paper, we will try to resolve this situation, by the proposal of an architecture based on the cooperative multi-agent systems paradigm combined with the Contract-Net protocol. We bring in an intelligent agent whose role is to warn in advance and for each item itemi ∈ Sitem, the coming of breakdowns and stock excesses by balancing the level of inter-site availability by a flow of resources of the same itemi by calling on the other E sites whose levels are in over-storage or under-storage.
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Jabarulla, Mohamed Yaseen, and Heung-No Lee. "Blockchain-Based Distributed Patient-Centric Image Management System." Applied Sciences 11, no. 1 (December 28, 2020): 196. http://dx.doi.org/10.3390/app11010196.
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In recent years, many researchers have focused on developing a feasible solution for storing and exchanging medical images in the field of health care. Current practices are deployed on cloud-based centralized data centers, which increase maintenance costs, require massive storage space, and raise privacy concerns about sharing information over a network. Therefore, it is important to design a framework to enable sharing and storing of big medical data efficiently within a trustless environment. In the present paper, we propose a novel proof-of-concept design for a distributed patient-centric image management (PCIM) system that is aimed to ensure safety and control of patient private data without using a centralized infrastructure. In this system, we employed an emerging Ethereum blockchain and a distributed file system technology called Inter-Planetary File System (IPFS). Then, we implemented an Ethereum smart contract called the patient-centric access control protocol to enable a distributed and trustworthy access control policy. IPFS provides the means for decentralized storage of medical images with global accessibility. We describe how the PCIM system architecture facilitates the distributed and secured patient-centric data access across multiple entities such as hospitals, patients, and image requestors. Finally, we deployed a smart contract prototype on an Ethereum testnet blockchain and evaluated the proposed framework within the Windows environment. The evaluation results demonstrated that the proposed scheme is efficient and feasible.
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Son, Bumho, Jaewook Lee, and Huisu Jang. "A Scalable IoT Protocol via an Efficient DAG-Based Distributed Ledger Consensus." Sustainability 12, no. 4 (February 18, 2020): 1529. http://dx.doi.org/10.3390/su12041529.
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The Internet of Things (IoT) suffers from various security vulnerabilities. The use of blockchain technology can help resolve these vulnerabilities, but some practical problems in terms of scalability continue to hinder the adaption of blockchain for application in the IoT. The directed acyclic graph (DAG)-based Tangle model proposed by the IOTA Foundation aims to avoid transaction fees by employing a different protocol from that used in the blockchain. This model uses the Markov chain Monte Carlo (MCMC) algorithm to update a distributed ledger. However, concerns about centralization by the coordinator nodes remain. Additionally, the economic incentive to choose the algorithm is insufficient. The present study proposes a light and efficient distributed ledger update algorithm that regards only the subtangle of each step by considering the Bayesian inference. Experimental results have confirmed that the performance of the proposed methodology is similar to that of the existing methodology, and the proposed methodology enables a faster computation time. It also provides the same resistance to possible attacks, and for the same reasons, as does the MCMC algorithm.
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Li, Aiya, Xianhua Wei, and Zhou He. "Robust Proof of Stake: A New Consensus Protocol for Sustainable Blockchain Systems." Sustainability 12, no. 7 (April 2, 2020): 2824. http://dx.doi.org/10.3390/su12072824.
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In the digital economy era, the development of a distributed robust economy system has become increasingly important. The blockchain technology can be used to build such a system, but current mainstream consensus protocols are vulnerable to attack, making blockchain systems unsustainable. In this paper, we propose a new Robust Proof of Stake (RPoS) consensus protocol, which uses the amount of coins to select miners and limits the maximum value of the coin age to effectively avoid coin age accumulation attack and Nothing-at-Stake (N@S) attack. Under a comparison framework, we show that the RPoS equals or outperforms Proof of Work (PoW) protocol and Proof of Stake (PoS) protocol in three dimensions: energy consumption, robustness, and transaction processing speed. To compare the three consensus protocols in terms of trade efficiency, we built an agent-based model and find that RPoS protocol has greater or similar trade request-satisfied ratio than PoW and PoS. Hence, we suggest that RPoS is very suitable for building a robust digital economy distributed system.
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Alaya, Bechir, and Rehanullah Khan. "QoS Enhancement In VoD Systems: Load Management And Replication Policy Optimization Perspectives." Computer Journal 63, no. 10 (July 1, 2020): 1547–63. http://dx.doi.org/10.1093/comjnl/bxaa060.
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Abstract The amount of online video content is exponentially increasing, which spurs its access demands. Providing optimal quality of service (QoS) for this ever-increasing video data is a challenging task due to the number of QoS constraints. The system resources, the distributed system platform and the transport protocol thus all need to collaborate to guarantee an acceptable level of QoS for the optimal video streaming process. In this paper, we present a comprehensive survey on QoS management for the video-on-demand systems. First, we focus on load management and replication algorithms in content delivery networks and peer-to-peer (P2P) networks for their shortcomings. We also address the problem of admission control and resource allocation with the objectives of congestion avoidance and frame-loss reduction. Besides, we introduce and discuss various replication schemes. For both the client–server architecture and P2P networks, we highlight the need for a specific storage management policy to preserve system reliability and content availability. We also focus on content distribution and streaming protocols scaling. We deduce that content availability is linked to the characteristics and the performance of the streaming protocols. Finally, we create a comparison table that presents the different contributions of the discussed approaches as well as their limitations. We believe that such a comprehensive survey provides useful insights and contributes to the related domains.
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Zhao, Fangyuan, Xin Guo, and Wai Kin (Victor) Chan. "Individual Green Certificates on Blockchain: A Simulation Approach." Sustainability 12, no. 9 (May 11, 2020): 3942. http://dx.doi.org/10.3390/su12093942.
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Distributed renewable energy offers an exciting opportunity for sustainable transition and climate change mitigation. However, it is overlooked in most of the conventional tradable green certificates programs. Blockchain shows an advantage of incorporating a galaxy of distributed prosumers in a transparent and low-cost manner. This paper proposes I-Green, a blockchain-based individual green certificates system for promoting voluntary adoption of distributed renewable energy. Combing the features of blockchain technology and the theories of social norm and peer effects, the novel green ratio incentive scheme and proof of generation consensus protocol are designed for I-Green. A blockchain simulator is constructed to evaluate the effectiveness and efficiency of I-Green system. The simulation results present its potential for facilitating widespread adoption of distributed generation, and confirm the feasibility of blockchain as the information communication technology (ICT).
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Ariza, Leidy D., and Carlos R. Orjuela. "Why Implement Distributed Systems in Municipal Music Schools in Colombia?" Modern Applied Science 11, no. 9 (August 24, 2017): 92. http://dx.doi.org/10.5539/mas.v11n9p92.
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In Colombia, since 2003, the public policy "National Plan of Music for citizen Coexistence" has been implemented as a government measure, which provides music courses in each one of the country's municipalities. This plan does not take into account the use of technologies to share the experiences of each one of the schools.Taking into account the above- mentioned points, this article focuses its attention on the search of technologies that can be used to share multimedia content such as Content Delivery Network (CDN), Learning Management System (LCMS) and Distributed Systems in order to indicate which technology is the most appropriate to fulfill this purpose.In that sense, through the Wireshark tool, network traffic is captured for each one of the tests performed: Upload, display and deletion of videos for each configured technology (CDN, LCMS and Distributed Systems), having as comparison parameters the following aspects: Real-time Traffic, Total Traffic Vs Packet Loss, Communication Exchange and Protocol Hierarchies. After doing that, we proceed to take statistics to be analyzed and obtain the comparative results that are needed for this research.Finally, one can conclude the comparison of the results of each technology: that it is appropriate that the municipal schools of music use distributed systems because the size of the packets sent is smaller than that one that is sent by CDN and CML technologies. There are no multiple communication jumps. No prior approval is required to publish the content and there is no limitation on the size of the content to be published.
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Valdez, Rupa S., Christopher Lunsford, Jiwoon Bae, Lisa C. Letzkus, and Jessica Keim-Malpass. "Self-Management Characterization for Families of Children With Medical Complexity and Their Social Networks: Protocol for a Qualitative Assessment." JMIR Research Protocols 9, no. 1 (January 23, 2020): e14810. http://dx.doi.org/10.2196/14810.
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Background Children with medical complexity (CMC) present rewarding but complex challenges for the health care system. Transforming high-quality care practices for this population requires multiple stakeholders and development of innovative models of care. Importantly, care coordination requires significant self-management by families in home- and community-based settings. Self-management often requires that families of CMC rely on vast and diverse social networks, encompassing both online and offline social relationships with individuals and groups. The result is a support network surrounding the family to help accomplish self-management of medical tasks and care coordination. Objective The goal of this study is to use a theoretically driven perspective to systematically elucidate the range of self-management experiences across families of CMC embedded in diverse social networks and contextual environments. This approach will allow for characterization of the structure and process of self-management of CMC with respect to social networks, both in person and digitally. This research proposal aims to address the significant gaps in the self-management literature surrounding CMC, including the following: (1) how self-management responsibilities are distributed and negotiated among the social network and (2) how individual-, family-, and system-level factors influence self-management approaches for CMC from a theoretically driven perspective. Methods This study will encompass a qualitative descriptive approach to understand self-management practices among CMC and their social networks. Data collection and analysis will be guided by a theoretical and methodological framework, which synthesizes perspectives from nursing, human factors engineering, public health, and family counseling. Data collection will consist of semistructured interviews with children, parents, and social network members, inclusive of individuals such as friends, neighbors, and community members, as well as online communities and individuals. Data analysis will consist of a combination of inductive and deductive methods of qualitative content analysis, which will be analyzed at both individual and multiadic levels, where interview data from two or more individuals, focused on the same experience, will be comparatively analyzed. Results This study will take approximately 18 months to complete. Our long-term goals are to translate the qualitative analysis into (1) health IT design guidance for innovative approaches to self-management and (2) direct policy guidance for families of CMC enrolled in Medicaid and private insurance. Conclusions Multiple innovative components of this study will enable us to gain a comprehensive and nuanced understanding of the lived experience of self-management of CMC. In particular, by synthesizing and applying theoretical and methodological approaches from multiple disciplines, we plan to create novel informatics and policy solutions to support their care within home and community settings. International Registered Report Identifier (IRRID) PRR1-10.2196/14810
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Pan, Yiguang, and Xiaomei Deng. "Incentive Mechanism Design for Distributed Autonomous Organizations Based on the Mutual Insurance Scenario." Complexity 2021 (August 2, 2021): 1–16. http://dx.doi.org/10.1155/2021/9947360.
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The rise of blockchain has led to discussions on new governance models and the cooperation of multiple participants. Due to the cognitive defects of the blockchain protocol in terms of intelligent contracts and decentralized autonomous organizations (DAOs), it is often unclear as to how to make decisions about the evolution of blockchain applications. Many autonomous organizations, with the support of network technologies such as blockchain, blindly absorb members and expand the scale of the capital pool, while ignoring the cost advantage of traditional autonomous organizations based on social relations and mutual supervision to fight information asymmetry. In this context, this study analyzes the evolutionary trend of autonomous organizations and their members’ strategies under different policy environments. To this end, under the digital economy background, based on game theory, the evolutionary dynamics method, and the form of the mutual insurance organization, this study constructs an evolutionary dynamics model of distributed autonomous organizations. The results show that blind expansion without review aggravates the overall risk pool’s moral hazard, in the context of mutual insurance. Organizational strategies, such as risk pool splits, can effectively improve the risk pool’s operating performance and establish a benign competition elimination mechanism. Driven by cooperation efficiency and split supervision based on homogeneous clustering, the comprehensive application of the market elimination mechanism can effectively combat moral hazards, restrain the adverse effects of member flow, expand the living space of small- and medium-sized insurance organizations, curb the emergence of a large-scale monopoly risk pool, and improve market vitality. These conclusions and suggestions also apply to autonomous organizations based on social relations and mutual supervision. The results offer specific decision-making guidance and suggestions for the government, insurance companies, and risk management.
Dissertations / Theses on the topic "DPMP [Distributed Policy Management Protocol]"
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Ayari, Mouna. "Architecture de gestion décentralisée de la qualité de service par politiques dans les réseaux Ad Hoc." Paris 6, 2008. http://www.theses.fr/2009PA066006.
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Dans cette thèse, nous proposons une architecture de gestion autonomique de la qualité de service par politiques dans les réseaux ad hoc : ADMA (Autonomous Decentralized Management Architecture). L'objectif de notre approche est de mettre en place, un système auto-géré, dynamique et adaptatif. Nous avons associé à cet effet les caractéristiques du système de gestion par politiques avec la propriété d'auto-configuration des réseaux autonomiques. Aucun noeud ad hoc ne possède une vision complète ou globale du réseau et les décisions seront prises d'une manière totalement décentralisée. Ces décisions respectent des politiques prédéfinies par l'administrateur du réseau. Ces politiques sont répliquées dans tous les nœuds du réseau ad hoc. Nous en avons distinguées quatre classes : politiques de configuration, de reconfiguration, de surveillance et méta-politiques. Nous proposons également un nouveau protocole de gestion par politiques fonctionnant en mode pair-à-pair décentralisé: DPMP (Distributed Policy Management Protocol). Notre protocole permet d'assurer deux services : la distribution des politiques dans le réseau ad hoc et la collecte d'information d'état du nœud et son environnement. Il permet également l'interaction entre les différents composants de notre architecture ADMA. L'évaluation de notre proposition porte sur deux volets : la vérification formelle et les simulations. La modélisation et vérification formelles nous ont permis de valider la conception du protocole DPMP par rapport à sa spécification. Les résultats de simulations ont montré que notre solution passe à l'échelle et qu'elle n'est pas sensible à la mobilité et aux changements topologiques.
Book chapters on the topic "DPMP [Distributed Policy Management Protocol]"
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Ayari, Mouna, Farouk Kamoun, and Guy Pujolle. "Distributed Policy Management Protocol for Self-Configuring Mobile Ad Hoc Networks." In Advances in Ad Hoc Networking, 73–84. Boston, MA: Springer US, 2008. http://dx.doi.org/10.1007/978-0-387-09490-8_7.
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Weitzner, Daniel J., Jim Hendler, Tim Berners-Lee, and Dan Connolly. "Creating a Policy-Aware Web." In Web and Information Security, 1–31. IGI Global, 2006. http://dx.doi.org/10.4018/978-1-59140-588-7.ch001.
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In this chapter, we describe the motivations for, and development of, a rule-based policy management system that can be deployed in the open and distributed milieu of the World Wide Web. We discuss the necessary features of such a system in creating a “Policy Aware” infrastructure for the Web and argue for the necessity of such infrastructure. We then show how the integration of a Semantic Web rules language (N3) with a theorem prover designed for the Web (Cwm) makes it possible to use the Hypertext Transport Protocol (http) to provide a scalable mechanismfor the exchange of rules and, eventually, proofs for access control on the Web. We also discuss which aspects of the Policy Aware Web are enabled by the current mechanism and describe future research needed to make the widespread deployment of rules and proofs on the Web a reality.
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Weitzner, Daniel J., Jim Hendler, Tim Berners-Lee, and Dan Connolly. "Creating a Policy-Aware Web." In Information Security and Ethics, 1774–94. IGI Global, 2008. http://dx.doi.org/10.4018/978-1-59904-937-3.ch122.
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In this chapter, we describe the motivations for, and development of, a rule-based policy management system that can be deployed in the open and distributed milieu of the World Wide Web. We discuss the necessary features of such a system in creating a “Policy Aware” infrastructure for the Web and argue for the necessity of such infrastructure. We then show how the integration of a Semantic Web rules language (N3) with a theorem prover designed for the Web (Cwm) makes it possible to use the Hypertext Transport Protocol (http) to provide a scalable mechanismfor the exchange of rules and, eventually, proofs for access control on the Web. We also discuss which aspects of the Policy Aware Web are enabled by the current mechanism and describe future research needed to make the widespread deployment of rules and proofs on the Web a reality.
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Weitzner, Daniel J., Jim Hendler, Tim Berners-Lee, and Dan Connolly. "Creating a Policy-Aware Web." In Global Information Technologies, 81–100. IGI Global, 2008. http://dx.doi.org/10.4018/978-1-59904-939-7.ch008.
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In this chapter, we describe the motivations for, and development of, a rule-based policy management system that can be deployed in the open and distributed milieu of the World Wide Web. We discuss the necessary features of such a system in creating a “Policy Aware” infrastructure for the Web and argue for the necessity of such infrastructure. We then show how the integration of a Semantic Web rules language (N3) with a theorem prover designed for the Web (Cwm) makes it possible to use the Hypertext Transport Protocol (http) to provide a scalable mechanismfor the exchange of rules and, eventually, proofs for access control on the Web. We also discuss which aspects of the Policy Aware Web are enabled by the current mechanism and describe future research needed to make the widespread deployment of rules and proofs on the Web a reality.
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Tsuji, Hiroshi, Ryosuke Saga, Takefumi Konzo, and Akihiro Akihiro. "LOSIMOPU." In Global Integrated Supply Chain Systems, 200–216. IGI Global, 2006. http://dx.doi.org/10.4018/978-1-59140-611-2.ch013.
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This chapter presents a software simulator called LOSIMOPU. LOSIMOPU allows users to build a supply chain model and analyze the sensitivity of logistics on assigned policy and capacity under uncertainty. LOSIMOPU consists of five kinds of participants (end-customer, intermediate supplier, end-supplier, transportation server, and electronic payment server) and an e-marketplace for the supply chain. Each participant is implemented as a distributed object so that it runs concurrently and has capacity and policy for playing its role. The e-marketplace defines the trade protocol for the workflow management and transaction analysis. LOSIMOPU visualizes expected indices of assigned parameters for decision support. This chapter discusses the background of the proposal, the goal of the simulator, the milestone, the technical issues for development, and the prototype system.