scholarly journals ZRR-P2P: Zone-Based Mechanism for Data Replication and Research Optimization in Unstructured P2P Systems

2021 ◽  
Vol 26 (1) ◽  
pp. 23-32
Author(s):  
Sarra Cherbal ◽  
Imen Barouchi
Keyword(s):  
Data Replication ◽  
Research Process ◽  
Data Availability ◽  
Storage Space ◽  
P2p Systems ◽  
Mobile P2p ◽  
Peer To Peer Systems ◽  
Mobile P2p Networks ◽  
Unstructured P2p ◽  
Selection Of

Peer-to-peer systems (P2P) have enjoyed great popularity in terms of sharing content in distributed environments. In mobile P2P networks, how to improve the efficiency of the resource lookup has been an important topic of research. Among the existing solutions, we find lookup mechanisms based on data replication that can increase data availability and reduce search latency. On the other side, these solutions have certain limits such as in the selection of resources to be replicated and in increasing the storage space of peers with additional data. Therefore, this work ZRR-P2P (Zone-based mechanism for data Replication and Research optimization in P2P) comes with the aim of partitioning the network zone on sub-zones and of replicating popular data shared in the network. Thus, in order to improve the research process without increasing storage space of peers. The simulation results show that our strategy manages to increase data availability and improve the search process in terms of hops count and search latency, while avoiding increasing the storage space of peers.

A Novel Data Consistence Model Based on Virtual Peers in Peer-to-Peer Systems

2020 ◽  
Vol 16 (3) ◽  
pp. 1-16
Author(s):  
Hong He
Keyword(s):  
Data Retrieval ◽  
Peer To Peer ◽  
Data Consistency ◽  
P2p Systems ◽  
Efficient Storage ◽  
Peer To Peer Systems ◽  
Consistency Problem ◽  
Unstructured P2p ◽  
Effectiveness And Efficiency ◽  
P2p System

In recent years, peer-to-peer (P2P) systems have become a promising paradigm to provide efficient storage service in distributed environments. Although its effectiveness has been proven in many areas, the data consistency problem in P2P systems are still an opening issue. This article proposes a novel data consistence model, virtual peers-based data consistency (VPDC), which introduces a set of virtual peers to provide guaranteed data consistency in decentralized and unstructured P2P systems. The VPDC model can be easily implemented in any P2P system without introducing any interference to data retrieval. Theoretical analysis on VPDC is presented to analyze its effectiveness and efficiency, and massive experiments are conducted to evaluate the performance of a VPDC model in a real-world P2P system. The results indicate that it can significantly improve the data consistence of P2P systems and outperform many similar approaches in various experimental settings.

Economic incentive-based brokerage schemes for improving data availability in mobile-P2P networks

2013 ◽  
Vol 36 (8) ◽  
pp. 861-874 ◽  
Author(s):  
Nilesh Padhariya ◽  
Anirban Mondal ◽  
Sanjay Kumar Madria ◽  
Masaru Kitsuregawa
Keyword(s):  
Economic Incentive ◽  
Data Availability ◽  
P2p Networks ◽  
Mobile P2p ◽  
Mobile P2p Networks

The Research Project «Names of Modern Professions» in Extracurricular Work with 6-th Grade Russian Students

2020 ◽  
Vol 81 (6) ◽  
pp. 23-31
Author(s):  
M. I. Vasileva
Keyword(s):  
Theoretical Analysis ◽  
Scientific Literature ◽  
Research Process ◽  
Russian Language ◽  
Research Project ◽  
Educational Activities ◽  
Research Activities ◽  
The Russian Language ◽  
Selection Of

The aim of the study was to investigate approaches to the formation of general educational skills. A survey examining the design and research process was carried out by 6th-grade Russian students over the course of an extracurricular project entitled «Names of Modern Professions». In the paper, the selection of the «Lexicology» section for such activities carried out by school pupils is substantiated and stages of work on the project are described. The applied methodology involves theoretical analysis of scientific literature, formative experimentation, analysis of products of educational activities, observation and description. It is concluded that the design of extracurricular research activities in the Russian language contributes to the formation of general educational competencies in conducting surveys and searching for information on the basis of subject skills.

Overlays in Mobile P2P Networks

2014 ◽  
Vol 24 (1) ◽  
pp. 139-152
Author(s):  
Guo-Yin ZHANG ◽  
Jun LI
Keyword(s):  
P2p Networks ◽  
Mobile P2p ◽  
Mobile P2p Networks

scholarly journals Methodology for Determining the Location of River Ports on a Modernized Waterway Based on Non-Cost Criteria: A Case Study of the Odra River Waterway

2021 ◽  
Vol 13 (6) ◽  
pp. 3571
Author(s):  
Bogusz Wiśnicki ◽  
Dorota Dybkowska-Stefek ◽  
Justyna Relisko-Rybak ◽  
Łukasz Kolanda
Keyword(s):  
Large Scale ◽  
Multicriteria Decision Making ◽  
Research Process ◽  
Optimal Selection ◽  
Investment Projects ◽  
Odra River ◽  
Research Problems ◽  
Selection Of ◽  
Construction Works

The paper responds to research problems related to the implementation of large-scale investment projects in waterways in Europe. As part of design and construction works, it is necessary to indicate river ports that play a major role within the European transport network as intermodal nodes. This entails a number of challenges, the cardinal one being the optimal selection of port locations, taking into account the new transport, economic, and geopolitical situation that will be brought about by modernized waterways. The aim of the paper was to present an original methodology for determining port locations for modernized waterways based on non-cost criteria, as an extended multicriteria decision-making method (MCDM) and employing GIS (Geographic Information System)-based tools for spatial analysis. The methodology was designed to be applicable to the varying conditions of a river’s hydroengineering structures (free-flowing river, canalized river, and canals) and adjustable to the requirements posed by intermodal supply chains. The method was applied to study the Odra River Waterway, which allowed the formulation of recommendations regarding the application of the method in the case of different river sections at every stage of the research process.

Does Wrongdoer Reputation Matter? Impact of Auditor-Wrongdoer Performance and Likeability Reputations on Fellow Auditors' Intention to Take Action and Choice of Reporting Outlet

2011 ◽  
Vol 23 (2) ◽  
pp. 207-234 ◽  
Author(s):  
Jesse C. Robertson ◽  
Chad M. Stefaniak ◽  
Mary B. Curtis
Keyword(s):  
Two Dimensions ◽  
Data Availability ◽  
Good Performer ◽  
Reporting Decisions ◽  
Prior Literature ◽  
Reporting Channel ◽  
Channel Preferences ◽  
Main Effects ◽  
The Impact ◽  
Selection Of

ABSTRACT We investigate the effects of auditor-wrongdoer reputations for performance and likeability on fellow auditors' intentions to take action in response to a questionable audit act. We also use this context to explore auditor selection of reporting outlets, when they do choose to take action. In an experiment with 181 auditors, main effects suggest that likeability reputation is a significant determinant of intention to take action, while performance reputation is marginally significant. As expected, interaction results indicate that auditors have the greatest intention to take action against less likeable, poor performers. Contrary to expectations, intention to take action against a more likeable, good performer is no lower than the mixed conditions. Thus, the influence of the two dimensions of reputation is complex. Additionally, we find auditors are more likely to whistle-blow internally than externally, and through non-anonymous outlets than anonymous outlets. Our contributions include exploring the impact of reputation on the actions of third parties, and advancing prior literature by considering the influence of wrongdoer attributes on reporting decisions and auditors' reporting channel preferences. Data Availability: Data are available from the first author upon request.

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