Browsing by Author "Abraham, Ajith"

Now showing items 1-11 of 11

    • A GA(TS) hybrid algorithm for scheduling in computational grids 

      Xhafa Xhafa, Fatos; González, Juan A.; Dahal, Keshav P.; Abraham, Ajith (Springer, 2009)
      Conference report
      Open Access
      The hybridization of heuristics methods aims at exploring the synergies among stand alone heuristics in order to achieve better results for the optimization problem under study. In this paper we present a hybridization of ...

    • A replication-based approach for the improvement of the online learning experience in distributed environments 

      Caballé Llobet, Santiago; Xhafa Xhafa, Fatos; Abraham, Ajith (Institute of Electrical and Electronics Engineers (IEEE), 2009)
      Conference report
      Open Access
      Modern on-line collaborative learning environments need to be continuously adapted, adjusted, and personalized to each specific target learning group. Moreover, these environments are to enable and scale the involvement ...

    • Computational models and heuristic methods for Grid scheduling problems 

      Xhafa Xhafa, Fatos; Abraham, Ajith (Elsevier, 2010)
      Article
      Open Access
      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. ...

    • Efficient interaction analysis for an effective provision of knowledge about the discussion process to CSCL practices 

      Caballé Llobet, Santiago; Xhafa Xhafa, Fatos; Daradoumis, Thanasis; Abraham, Ajith (Institute of Electrical and Electronics Engineers (IEEE), 2008)
      Conference report
      Open Access
      The discussion process plays an important social task in Computer-Supported Collaborative Learning (CSCL) where participants can discuss about the activity being performed, collaborate with each other through the exchange ...

    • Enabling automatic just-in-time evaluation of in-class discussions in on-line collaborative learning practices 

      Caballé Llobet, Santiago; Lapedriza Garcia, Àgata; Masip Rodó, David; Xhafa Xhafa, Fatos; Abraham, Ajith (2009-10)
      Article
      Open Access
      Learning by discussion when applied to on-line collaborative learning settings can provide significant benefits for students in education in general. Indeed, the discussion process plays an important social task in ...

    • Genetic algorithm based schedulers for grid computing systems 

      Xhafa Xhafa, Fatos; Carretero Casado, Javier Sebastián; Abraham, Ajith (2007-10)
      Article
      Open Access
      In this paper we present Genetic Algorithms (GAs) based schedulers for efficiently allocating jobs to resources in a Grid system. Scheduling is a key problem in emergent computational systems, such as Grid and P2P, in order ...

    • Nature inspired meta-heuristics for grid scheduling: single and multi-objective optimization approaches 

      Abraham, Ajith; Liu, Hongbo; Grosan, Crina; Xhafa Xhafa, Fatos (Springer, 2008)
      Part of book or chapter of book
      Open Access
      In this chapter, we review a few important concepts from Grid computing related to scheduling problems and their resolution using heuristic and meta-heuristic approaches. Scheduling problems are at the heart of any Grid-like ...

    • Scheduling in multiprocessor system using genetic algorithms 

      Dahal, Keshav P.; Hossain, Alamgir; Varghese, Benzy; Abraham, Ajith; Xhafa Xhafa, Fatos; Daradoumis, Thanasis (Institute of Electrical and Electronics Engineers (IEEE), 2008)
      Conference report
      Open Access
      Multiprocessors have emerged as a powerful computing means for running real-time applications, especially where a uniprocessor system would not be sufficient enough to execute all the tasks. The high performance and ...

    • Towards an automatic real-time assessment of online discussions in computer-supported collaborative learning practices 

      Caballé Llobet, Santiago; Xhafa Xhafa, Fatos; Abraham, Ajith (Institute of Electrical and Electronics Engineers (IEEE), 2008)
      Conference report
      Open Access
      The discussion process plays an important social task in Computer-Supported Collaborative Learning (CSCL) where participants can discuss about the activity being performed, collaborate with each other through the exchange ...

    • Tuning struggle strategy in genetic algorithms for scheduling in computational grids 

      Xhafa Xhafa, Fatos; Duran, Bernat; Abraham, Ajith; Dahal, Keshav P. (2008-10)
      Article
      Open Access
      Job Scheduling on Computational Grids is gaining importance due to the need for efficient large-scale Grid-enabled applications. Among different optimization techniques addressed for the problem, Genetic Algorithm (GA) is ...

    • Tuning struggle strategy in genetic algorithms for scheduling in computational grids 

      Xhafa Xhafa, Fatos; Duran, Bernat; Abraham, Ajith; Dahal, Keshav P. (Institute of Electrical and Electronics Engineers (IEEE), 2008)
      Conference report
      Open Access
      Job Scheduling on Computational Grids is gaining importance due to the need for efficient large-scale Grid-enabled applications. Among different optimization techniques addressed for the problem, Genetic Algorithm (GA) is ...