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Ara es mostren els items 115-134 de 403

    • Cloud orchestration with ORCS and OpenStack 

      Amato, Flora; Moscato, Francesco; Xhafa Xhafa, Fatos (Springer, 2018)
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      During the past recent years there is an increasing interests in Cloud Services Orchestration. Efficient and even optimal allocation of Cloud resources is one of the main problems on which the scientific and development ...

    • Cloud virtual machine scheduling: modelling the cloud virtual machine instantiation 

      Sotiriadis, Stelios; Bessis, Nik; Xhafa Xhafa, Fatos; Antonopoulos, Nick (2012)
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      Cloud computing provides an efficient and flexible means for various services to meet the diverse and escalating needs of IT end-users. It offers novel functionalities including the utilization of remote services in addition ...

    • CLPL: Providing software infrastructure for the systematic and effective construction of complex collaborative learning systems 

      Caballé Llobet, Santiago; Xhafa Xhafa, Fatos (2010-11)
      Article
      Accés obert
      Over the last decade, e-Learning and in particular Computer-Supported Collaborative Learning (CSCL) needs have been evolving accordingly with more and more demanding pedagogical and technological requirements. As a result, ...

    • Collaboration through Patient Data Access and sharing in the cloud 

      Xhafa Xhafa, Fatos; Qassem, Tarek; Moore, Philip R. (Institute of Electrical and Electronics Engineers (IEEE), 2014)
      Text en actes de congrés
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      There have been many socio-political and technological developments in the area of Electronic Patient Records (EPR). The technological aspects include EPR implemented using Online Transaction Processing (OTP) using Internet ...

    • Computación en Internet: librería MALLBA para problemas de optimización. 

      Blesa Aguilera, Maria Josep; Petit Silvestre, Jordi; Xhafa Xhafa, Fatos (2001-04)
      Report de recerca
      Accés obert

    • Computational models and heuristic methods for Grid scheduling problems 

      Xhafa Xhafa, Fatos; Abraham, Ajith (Elsevier, 2010)
      Article
      Accés obert
      In this paper we survey computational models for Grid scheduling problems and their resolution using heuristic and meta-heuristic approaches. Scheduling problems are at the heart of any Grid-like computational system. ...

    • Controlled secure social cloud data sharing based on a novel identity based proxy re-encryption plus scheme 

      Wang, Xu An; Xhafa Xhafa, Fatos; Ma, Jianfeng; Zheng, Zhiheng (Elsevier, 2019-08)
      Article
      Accés obert
      Currently we are witnessing a rapid integration of social networks and cloud computing, especially on storing social media contents on cloud storage due to its cheap management and easy accessing at any time and from any ...

    • Cost-effective secure e-health cloud system using identity based cryptographic techniques 

      Wang, Xu An; Ma, Jianfeng; Xhafa Xhafa, Fatos; Zhang, Mingwu; Luo, Xiaoshuang (Elsevier, 2016-08-31)
      Article
      Accés obert
      Nowadays E-health cloud systems are more and more widely employed. However the security of these systems needs more consideration for the sensitive health information of patients. Some protocols on how to secure the e-health ...

    • Data as a Service (DaaS) for sharing and processing of large data collections in the cloud 

      Terzo, Olivier; Ruiu, Pietro; Bucci, Enrico; Xhafa Xhafa, Fatos (Institute of Electrical and Electronics Engineers (IEEE), 2013)
      Text en actes de congrés
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      Data as a Service (DaaS) is among the latest kind of services being investigated in the Cloud computing community. The main aim of DaaS is to overcome limitations of state-of-the-art approaches in data technologies, according ...

    • Data replication and synchronization in P2P collaborative systems 

      Xhafa Xhafa, Fatos (2012)
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      Data replication and synchronization techniques have recently attracted a lot of attention of researchers from P2P computing community. Such techniques are fundamental to increase data availability, reliability and robustness ...

    • Deadline scheduling for aperiodic tasks in inter-cloud environments: a new approach to resource management 

      Pop, Florin; Dobre, Ciprian M.; Cristea, Valentin; Bessis, Nik; Xhafa Xhafa, Fatos; Barolli, Leonard (2015-05-01)
      Article
      Accés obert
      In the big data era, the speed of analytical processing is influenced by the storage and retrieval capabilities to handle large amounts of data. While the distributed crunching applications themselves can yield useful ...

    • Design and evaluation of a tabu search method for job scheduling in distributed enviorments 

      Xhafa Xhafa, Fatos; Carretero Casado, Javier Sebastián; Alba, Enrique; Dorronsoro, Bernabe (Institute of Electrical and Electronics Engineers (IEEE), 2008)
      Text en actes de congrés
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      The efficient allocation of jobs to grid resources is indispensable for high performance grid-based applications. The scheduling problem is computationally hard even when there are no dependencies among jobs. Thus, we ...

    • 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)
      Article
      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 ...

    • Designing cloud-based electronic health record system with attribute-based encryption 

      Xhafa Xhafa, Fatos; Li, Jingwei; Zhao, Gansen; Li, Jin; Chen, Xiaofeng; Wong, Duncan S. (2015-05-01)
      Article
      Accés obert
      With the development of cloud computing, electronic health record (EHR) system has appeared in the form of patient-centric, in which patients store their personal health records (PHRs) at a remote cloud server and selectively ...

    • Developing an information system for monitoring student's activity in online collaborative learning 

      Juan Pérez, Ángel Alejandro; Daradoumis, Thanasis; Faulín Fajardo, Francisco Javier; Xhafa Xhafa, Fatos (Institute of Electrical and Electronics Engineers (IEEE), 2008)
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      In this paper we address the issue of monitoring students’ and groups’ activity in online collaborative learning environments. This issue is especially important in the collaborative e-learning context, since an efficient ...

    • Distributed-based massive processing of activity logs for efficient user modeling in a Virtual Campus 

      Caballé Llobet, Santiago; Xhafa Xhafa, Fatos (Kluwer Academic Publishers, 2013-12)
      Article
      Accés obert
      This paper reports on a multi-fold approach for the building of user models based on the identification of navigation patterns in a virtual campus, allowing for adapting the campus’ usability to the actual learners’ needs, ...

    • Edge and cluster computing as enabling infrastructure for Internet of Medical Things 

      Ritrovato, Pierluigi; Xhafa Xhafa, Fatos; Giordano, Andrea (Institute of Electrical and Electronics Engineers (IEEE), 2018)
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      The continuous adoption of fitness and medical smart sensors are boosting the development of Internet of Medical Things (IoMT), reshaping and revolutionizing Healthcare. This digital transformation is paving the way to new ...

    • Edge computing and IoT analytics for agile optimization in intelligent transportation systems 

      Peyman, Mohammad; Copado, Pedro J.; Tordecilla Madera, Rafael David; Martins, Leandro do C.; Xhafa Xhafa, Fatos; Juan, Angel Alejandro (2021-10-01)
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      Accés obert
      With the emergence of fog and edge computing, new possibilities arise regarding the data-driven management of citizens’ mobility in smart cities. Internet of Things (IoT) analytics refers to the use of these technologies, ...

    • Effects of population size for location-aware node placement in WMNs: evaluation by a genetic algorithm--based approach 

      Oda, Tetsuya; Barolli, Admir; Spaho, Evjola; Barolli, Leonard; Xhafa Xhafa, Fatos; Younas, Muhammad (2014-02)
      Article
      Accés obert
      Wireless mesh networks (WMNs) are cost-efficient networks that have the potential to serve as an infrastructure for advanced location-based services. Location service is a desired feature for WMNs to support location-oriented ...