Exploració per autor "Matsuo, Keita"

Ara es mostren els items 1-20 de 21

    • A comparison study between two fuzzy-based trustworthiness systems for P2P networks 

      Umezaki, Kouhei; Spaho, Evjola; Barolli, Leonard; Xhafa Xhafa, Fatos; Matsuo, Keita; Iwashige, Jiro (2012)
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      In P2P systems, evaluation of trustworthiness of the peers is very important for a safe communication. In order to decide the peer trustworthiness different parameters are needed. In this paper, we propose two fuzzy-based ...

    • A comparison study for two fuzzy-based systems: improving reliability and security of JXTA-overlay P2P platform 

      Liu, Yi; Sakamoto, Shinji; Matsuo, Keita; Ikeda, Makoto; Barolli, Leonard; Xhafa Xhafa, Fatos (Springer, 2016-07-01)
      Article
      Accés obert
      The reliability of peers is very important for safe communication in peer-to-peer (P2P) systems. The reliability of a peer can be evaluated based on the reputation and interactions with other peers to provide different ...

    • A fuzzy-based reliability system for JXTA-overlay P2P platform considering as new parameter sustained communication time 

      Liu, Yi; Sakamoto, Shinji; Spaho, Evjola; Matsuo, Keita; Barolli, Leonard; Xhafa Xhafa, Fatos (Institute of Electrical and Electronics Engineers (IEEE), 2016)
      Text en actes de congrés
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      In this paper, we propose and evaluate a new fuzzy-based reliability system for Peer-to-Peer (P2P) Communications in JXTA-Overlay platform considering as a new parameter the sustained communication time. In our system, we ...

    • A fuzzy-based reliaility for JXTA-overlay P2P platform considering data download speed, peer congestion situation, number of interaction and packet loss parameters 

      Liu, Yi; Oda, Tetsuya; Spaho, Evjola; Matsuo, Keita; Barolli, Leonard; Xhafa Xhafa, Fatos (Institute of Electrical and Electronics Engineers (IEEE), 2016)
      Text en actes de congrés
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      In this paper, we propose and evaluate a new fuzzy-based reliability system for Peer-to-Peer (P2P) communications in JXTA-Overlay platform considering as a new parameter the peer congestion situation. In our system, we ...

    • A GA-based simulation system for WMNs: comparison analysis for different number of flows, client distributions, DCF and EDCA functions 

      Barolli, Admir; Oda, Tetsuya; Matsuo, Keita; Cuka, Miralda; Barolli, Leonard; Xhafa Xhafa, Fatos (Springer, 2017-02-04)
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      Accés obert
      In this paper, we compare the performance of Distributed Coordination Function (DCF) and Enhanced Distributed Channel Access (EDCA) for normal and uniform distributions of mesh clients considering two Wireless Mesh Network ...

    • A GA-based simulation system for WMNs: performance analysis for different WMN architectures considering transmission rate and OLRS protocol 

      Matsuo, Keita; Oda, Tetsuya; Barolli, Admir; Ikeda, Makoto; Barolli, Leonard; Xhafa Xhafa, Fatos (Institute of Electrical and Electronics Engineers (IEEE), 2016)
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      In this paper, we evaluate the performance of two WMN architectures considering throughput, delay, jitter and fairness index metrics. For simulations, we used ns-3. We compare the performance for two architectures considering ...

    • A secure JXTA-overlay platform for robot control 

      Spaho, Evjola; Matsuo, Keita; Barolli, Leonard; Arnedo Moreno, Joan; Xhafa Xhafa, Fatos; Kolici, Vladi (Institute of Electrical and Electronics Engineers (IEEE), 2010)
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      Due to the improvement of connections capabilities of end-devices there is an increasing interest to design and implement full featured P2P networks that integrate end-devices. In this paper, we use JXTA-Overlay for the ...

    • A security framework for JXTA-overlay 

      Arnedo Moreno, Joan; Matsuo, Keita; Barolli, Leonard; Xhafa Xhafa, Fatos (Institute of Electrical and Electronics Engineers (IEEE), 2009)
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      At present time, the maturity of P2P research field has pushed through new problems such us those related with security. For that reason, security starts to become one of the key issues when evaluating a P2P system and it ...

    • A security-aware approach to JXTA-overlay primitives 

      Arnedo Moreno, Joan; Matsuo, Keita; Barolli, Leonard; Xhafa Xhafa, Fatos (Institute of Electrical and Electronics Engineers (IEEE), 2009)
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      The JXTA-Overlay project is an effort to use JXTA technology to provide a generic set of functionalities that can be used by developers to deploy P2P applications. Since its design mainly focuses on issues such as scalability ...

    • A study of using SmartBox to embed emotion awareness through stimulation into e-learning environments 

      Caballé Llobet, Santiago; Barolli, Leonard; Feidakis, Michalis; Matsuo, Keita; Xhafa Xhafa, Fatos; Daradoumis, Thanasis; Oda, Tetsuya (Institute of Electrical and Electronics Engineers (IEEE), 2014)
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      Emotions strongly influence human's behavior in individual and social situations and must be seriously considered in any human activity, such as e-Learning. Indeed, the embedding of emotional awareness features into virtual ...

    • Application of JXTA-overlay platform for secure robot control 

      Spaho, Evjola; Matsuo, Keita; Barolli, Leonard; Xhafa Xhafa, Fatos; Arnedo Moreno, Joan; Kolici, Vladi (2010)
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      Accés obert
      In this paper, we present the evaluation and experimental results of secured robot control in a P2P system. The control system is based on JXTA-Overlay platform. We used secure primitives and functions of JXTA-Overlay for ...

    • Design and implementation of a JXTA-Overlay P2P system and smart box environment 

      Matsuo, Keita; Barolli, Leonard; Xhafa Xhafa, Fatos; Koyama, Akio; Durresi, Arjan; Takizawa, Makoto (Institute of Electrical and Electronics Engineers (IEEE), 2008)
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      In this paper, we present the design and implementation of the JXTA-based e-Learning P2P system. We also show the design and implementation of a smart box environment that will be used for stimulating the learners to ...

    • Design and implementation of testbed using IoT and P2P technologies: improving reliability by a fuzzy-based approach 

      Liu, Yi; Yamada, Masafumi; Oda, Tetsuya; Matsuo, Keita; Barolli, Leonard; Xhafa Xhafa, Fatos (2017-08-23)
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      Accés obert
      The internet of things (IoT) is a new type of internet application which enables the objects to be active participants with other members of the network. In P2P systems, each peer has to obtain information of other peers ...

    • Experimental results and evaluation of SmartBox stimulation device in a P2P e-learning system 

      Matsuo, Keita; Barolli, Leonard; Arnedo Moreno, Joan; Xhafa Xhafa, Fatos; Koyama, Akio; Durresi, Arjan (Institute of Electrical and Electronics Engineers (IEEE), 2009)
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      In this paper, we present the experimental results and evaluation of the SmartBox stimulation device in P2P e-learning system which is based on JXTA-Overlay. We also show the design and implementation of the SmartBox ...

    • Implementation and design of new functions for a web-based E-Learning system to stimulate learners motivation 

      Matsuo, Keita; Barolli, Leonard; Xhafa Xhafa, Fatos; Koyama, Akio; Durresi, Arjan; Takizawa, Makoto (Institute of Electrical and Electronics Engineers (IEEE), 2008)
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      Due to the opportunities provided by the Internet, people are taking advantage of e-learning courses and during the last few years enormous research efforts have been dedicated to the development of e-learning systems. So ...

    • Implementation of an e-learning system using P2P, web and sensor technologies 

      Matsuo, Keita; Barolli, Leonard; Xhafa Xhafa, Fatos; Kolici, Vladi; Koyama, Akio; Durresi, Arjan; Miho, Rozeta (Institute of Electrical and Electronics Engineers (IEEE), 2009)
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      This work is motivated by the need to develop decentralized P2P approaches to support learning and teaching activity in virtual universities. In this paper, we present the implementation of the JXTA-based e-learning P2P ...

    • Improvement of JXTA-overlay P2P platform: evaluation for medical application and reliability 

      Liu, Yi; Sakamoto, Shinji; Matsuo, Keita; Ikeda, Makoto; Barolli, Leonard; Xhafa Xhafa, Fatos (2015)
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      JXTA-Overlay is a middleware built on top of the JXTA specification, which defines a set of protocols that standardize how different devices may communicate and collaborate among them. JXTA-Overlay provides a set of basic ...

    • Improving reliability of JXTA-overlay P2P platform: a comparison study for two fuzzy-based systems 

      Liu, Yi; Sakamoto, Shinji; Matsuo, Keita; Ikeda, Makoto; Barolli, Leonard; Xhafa Xhafa, Fatos (2015)
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      Accés obert
      In P2P systems, each peer has to obtain information of other peers and propagate the information to other peers through neighboring peers. Thus, it is important for each peer to have some number of neighbor peers. Moreover, ...

    • JXTA-overlay P2P platform and its application for robot control 

      Ogata, Yuichi; Spaho, Evjola; Matsuo, Keita; Barolli, Leonard; Arnedo Moreno, Joan; Xhafa Xhafa, Fatos (Institute of Electrical and Electronics Engineers (IEEE), 2010)
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      The design of an efficient collaborative multirobot framework that ensures the autonomy and the individual requirements of the involved robots is a very challenging task. This requires designing an efficient platform for ...

    • Securing a Java P2P framework: The JXTA-Overlay case 

      Arnedo Moreno, Joan; Matsuo, Keita; Barolli, Leonard; Xhafa Xhafa, Fatos (Association for Computing Machinery (ACM), 2009)
      Text en actes de congrés
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      In the wake of the success of Peer-to-Peer (P2P) networking, security has arisen as one of its main concerns, becoming a key issue when evaluating a P2P system. Unfortunately, some systems' design focus targeted issues ...