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Open Social Networking for Online Collaboration

Enrico Franchi, Agostino Poggi, Michele Tomaiuolo
2013 International Journal of e-collaboration  
But these results, obtained in decades of studies of human networks, may require significant efforts for being adapted to the different scopes of Virtual Organizations (VOs), Virtual Teams (VTs), online  ...  PARTICIPATION IN VIRTUAL ACTIVITIES The study of structure of OSNs, expressed in patterns of links among nodes, can exploit models of classical sociology and anthropology, with particular attention to  ...  In fact, the design of the system, based on solid file-sharing protocols, makes it resilient to diverse node presence, and it is sufficient that at least one of the nodes of the team is connected at each  ... 
doi:10.4018/jec.2013070104 fatcat:wqaewp3curd55axo7dbxa3xxg4

A Resource Search Model Based on Semantically Enabled P2P Grid

Jun Ye, Zhishu Li, Qing Li
2007 Future Generation Communication and Networking (FGCN 2007)  
In terms of this model a Bootstrap based on Distributed Hashing Table ( DHT) is added into P2P Grid and a Peer Service is implemented in every node.  ...  The semantic-based resource management architecture and RPC protocols are discussed. A vertical search engine prototype is realized with data extraction functionality.  ...  This paper investigated a resource search model by building a logical netnwork on the top of large internet web layer based on P2P and Grid technology.  ... 
doi:10.1109/fgcn.2007.40 dblp:conf/fgcn/YeLL07 fatcat:akuqiili2rdjzjvjjb5whcul4q

Harnessing the power of DHTs to build dynamic quorums in large-scale enterprise infrastructures

Roberto Baldoni, Ricardo Jiménez-Peris, Marta Patiño-Martínez, Leonardo Querzoni, Antonino Virigllito
2008 Proceedings of the 2nd Workshop on Large-Scale Distributed Systems and Middleware - LADIS '08  
These design principles consist of a dynamic and decentralized selection of quorums and in the exposure and exploitation of internals of the DHT.  ...  Obtaining the complete and exclusive control of the system for maintenance or auditing purposes in these enterprise infrastructures is a fundamental operation to be implemented.  ...  In this paper we focussed our study on three design principles, namely integration, delegation and flexibility, that should guide the construction of quorum systems and protocols in DHT-based enterprise  ... 
doi:10.1145/1529974.1529981 fatcat:sy4cla7gmrgkpimolzufoqi2vm

DHT-based Communications Survey: Architectures and Use Cases [article]

Yahya Hassanzadeh-Nazarabadi, Sanaz Taheri-Boshrooyeh, Safa Otoum, Seyhan Ucar, Öznur Özkasap
2021 arXiv   pre-print
In this article, we propose a classification of the state-of-the-art DHT-based methods focusing on their system architecture, communication, routing and technological aspects across various system domains  ...  With the advances in various distributed system technologies, novel and efficient solutions based on DHTs emerge and play critical roles in system design.  ...  With this architecture, IPFS is aimed to be utilized in scenarios like a global mount file system, personal sync folder, encrypted data sharing system, and the root file system of distributed Virtual Machines  ... 
arXiv:2109.10787v1 fatcat:pahehqjekrhrlnxex3khdsr5uq

Scalable DHT- and ontology-based information service for large-scale grids

Yongcai Tao, Hai Jin, Song Wu, Xuanhua Shi
2010 Future generations computer systems  
To address these issues, the paper proposes a scalable DHT-and ontology-based Information Service (DIS) for a grid system, which organizes resources into a DHT ring based on the VO mode.  ...  However, current applications of the P2P DHT technique to grids do not consider the Virtual Organization (VO) management mode of grid resources.  ...  The mapping component realizes the mapping between XML-or RDF-based metadata and OWL-based ontology or local ontology and OWL-based ontology, which is very important to realize DIS because different organizations  ... 
doi:10.1016/j.future.2009.06.001 fatcat:j5gnugdnabhcnhxhozdxz6okae

Overlays on Wireless Mesh Networks: Implementation and Cross-Layer Searching [chapter]

Gang Ding, John Vicente, Sanjay Rungta, Dilip Krishnaswamy, Winson Chan, Kai Miao
2006 Lecture Notes in Computer Science  
The platform enables development and deployment of concurrent distributed experiments on wireless mesh networks.  ...  After years of research on ad hoc networks, practical wireless mesh networks are moving towards mainstream industry deployment.  ...  The cross-layer searching protocol is realized and compared with the distributed hash table (DHT) [10] based overlay searching algorithms. The rest of the paper is organized as follows.  ... 
doi:10.1007/11907381_18 fatcat:tcbzvslcabhibgocjadctolc5i

Node-Capability-Aware Replica Management for Peer-to-Peer Grids

V.S. Agneeswaran, D. Janakiram
2009 IEEE transactions on systems, man and cybernetics. Part A. Systems and humans  
Object replicas are stored in the unstructured layer based on node capabilities. A structured DHT is built over this unstructured layer by using the concept of virtual servers.  ...  Detailed performance comparison is made with a replica mechanism realized over OpenDHT, a state of the art structured P2P system.  ...  We also thank Reddy for help in the implementation and the other members of the DOS Lab for the comments on the work and on the paper.  ... 
doi:10.1109/tsmca.2009.2015960 fatcat:uqbc43sw6rebdl364ghgbkuezu

Replica management services on the Grid: Evolving from a centralized design to a fully distributed, scalable and fault-tolerant peer-to-peer infrastructure [chapter]

A. Chazapis, A. Zissimos, N. Koziris, P. Tsanakas
2006 Grid Technologies  
The Grid infrastructure enables global-scale collaboration of large scientific communities (Virtual Organizations -VOs) usually relying on a common set of data.  ...  In this paper, we investigate the requirements of a Grid-centric, replica-based data storage and retrieval infrastructure, present the current trends and implementations and elaborate on how future architectures  ...  Furthermore, Grid users are organized in "Virtual Organizations".  ... 
doi:10.2495/1-84564-055-1/05 fatcat:3tnti4iv4jcuzi6uk6dr7aomzy

SeDas: A Self-Destructing Data System Based on Active Storage Framework

Lingfang Zeng, Shibin Chen, Qingsong Wei, Dan Feng
2013 IEEE transactions on magnetics  
In this paper, we present SeDas, a system that meets this challenge through a novel integration of cryptographic techniques with active storage techniques based on T10 OSD standard.  ...  Through functionality and security properties evaluations of the SeDas prototype, the results demonstrate that SeDas is practical to use and meets all the privacy-preserving goals described.  ...  We put up a data storage file system based on pNFS in virtual machine environment to implement the test for file uploading, downloading and sharing. A.  ... 
doi:10.1109/tmag.2013.2248138 fatcat:7zbxs42xwzbt3ikz5fkkj27rha

Decentralized Online Social Networks [chapter]

Anwitaman Datta, Sonja Buchegger, Le-Hung Vu, Thorsten Strufe, Krzysztof Rzadca
2010 Handbook of Social Network Technologies and Applications  
In this chapter we explore the various motivations of a decentralized approach to online social networking, discuss several concrete proposals and types of DOSN as well as challenges and opportunities  ...  This centralized nature of OSNs has several drawbacks including scalability, privacy, dependence on a provider, need for being online for every transaction, and a lack of locality.  ...  The advantage of using the DHT abstraction to do the routing over social graph is same as the use of DHTs instead of using flooding based search in a typical peer-to-peer system.  ... 
doi:10.1007/978-1-4419-7142-5_17 fatcat:igadyamiujdaheo6cewabshw74

Provider- and Patient-Related Barriers to and Facilitators of Digital Health Technology Adoption for Hypertension Management: Scoping Review

Ramya Sita Palacholla, Nils Fischer, Amanda Coleman, Stephen Agboola, Katherine Kirley, Jennifer Felsted, Chelsea Katz, Stacy Lloyd, Kamal Jethwani
2019 JMIR Cardio  
A total of 2299 articles were identified based on the above criteria after removing duplicates, and they were assessed for eligibility. Of these, 2165 references did not meet the inclusion criteria.  ...  The uptake of digital health technology (DHT) has been surprisingly low in clinical practice.  ...  While the shift to a value-based care system has encouraged the adoption and use of digital health technology to manage hypertension, the uptake of DHTs has been surprisingly low in clinical practice  ... 
doi:10.2196/11951 pmid:31758771 pmcid:PMC6834226 fatcat:oedls4urvfgutkstjk42ikptzu

A Game Theoretic Approach to Power Reduction in Distributed Storage Systems

Koji Hasebe, Takumi Sawada, Kazuhiko Kato
2016 Journal of Information Processing  
To realize this idea in an autonomous way, virtual nodes are regarded as selfish agents playing a game in which each node receives a payoff according to the workload of the disk on which it currently resides  ...  The key idea is to use a distributed hash table and migrate its virtual nodes dynamically so as to skew the workload towards a subset of physical disks while not overloading them.  ...  Our previous work [7] is also included in this category, which is based on the DHT technique and dynamically changes the allocation of its virtual nodes in a specific way.  ... 
doi:10.2197/ipsjjip.24.173 fatcat:r6ftaehnyrgdlkt6mkpimvzwlu

Using tuple-spaces to manage the storage and dissemination of spatial–temporal content

Sandford Bessler, Alexander Fischer, Eva Kühn, Richard Mordinyi, Slobodanka Tomic
2011 Journal of computer and system sciences (Print)  
Furthermore, we apply the proposed concept to realize a concrete application in the field of intelligent transportation, and present the results of the performance evaluation conducted with the system  ...  In order to address these two problems we propose a novel content dissemination architecture based on an overlay of space-based containers.  ...  Acknowledgments This work was performed in the project Realsafe and has been supported by the Austrian Government and by the City of Vienna within the competence center program COMET.  ... 
doi:10.1016/j.jcss.2010.01.010 fatcat:y4w3follqvc4fcojteyttbxoca

A Read-Only Distributed Hash Table

Verdi March, Yong Meng Teo
2011 Journal of Grid Computing  
In a DHT, data items such as resources, indexes of resources or resource metadata, are distributed across an overlay network based on a hash function.  ...  Through analytical and simulation analyses, we evaluate the performance of R-DHT and compare it with traditional DHTs in terms of lookup path length, resiliency to node failures, and maintenance overhead  ...  R-DHT realizes the key-to-node mapping through virtualization and splitting of node identifiers.  ... 
doi:10.1007/s10723-011-9189-9 fatcat:uin5yjtfgfgl3hgw7ek7mv6zay

Integration of Shareable Containers with Distributed Hash Tables for Storage of Structured and Dynamic Data

Eva Kühn, Richard Mordinyi, Hannu-D. Goiss, Thomas Moser, Sandford Bessler, Slobodanka Tomic
2009 2009 International Conference on Complex, Intelligent and Software Intensive Systems  
However, a closer analysis of the available distributed hash table (DHT) based approaches shows their inefficiency since the data structure gets lost and the short liveness of the data leads to a high  ...  In this work we propose a novel storage network based on an overlay of Space-based Computing Containers for storing, accessing and manipulating dynamic data.  ...  The main contribution of this work is therefore a novel storage architecture in which the tuple space entities are uniquely addressable via an overlay network based on DHT technology.  ... 
doi:10.1109/cisis.2009.53 dblp:conf/cisis/KuhnMGMBT09 fatcat:rf6wqfnt7zfkfpihzdue2et5hq
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