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In this paper we introduce the scientific issues related to deploying, in a multi-Cloud architecture, an infrastructure using the publish-subscribe paradigm for orchestrating the components of a framework that execute scientific workflows in highly heterogeneous and dynamic environments. More specifically we are in search of the adequate approaches to build deployment systems for heterogeneous and...
In this paper we investigate the general problem of controlling a scientic workflow service in termsof data management. We focus on the data managementproblem for the RedisDG scientific workflow engine.RedisDG is based on the Publish/Subscribe paradigmfor the interaction between the different componentsof the system, hence new issues appear for scheduling. Indeed, the Publish/Subscribe paradigm utilization...
A research development initiative at the farm level was conducted within the framework of a service contract between ESAK and the GCP/TUN/028/ITA-FAO Project in Siliana Governorate at three sites (Hamzet, Kharrouba and Mnara-Rjeybia). The project sought to encourage cereal producers to adopt a conservation-based agriculture using direct sowing (DS) in agricultural lands known to have a high risk of...
This article proposes a path for doing Data Science using browsers as computing and data nodes. This novel idea is motivated by the cross-fertilized fields of desktop grid computing, data management in grids and clouds, Web technologies such as NoSQL tools, models of interactions and programming models in grids, cloud and Web technologies. We propose a methodology for the modeling, analyzing, implementation...
Desktop Grid is among the success stories during last years by using volunteers nodes participating into projects. Now, with the emergence of Cloud Computing, the questions become where to take resources? and how to coordinate the resources? Our assumption is that Desktop Grid will continue to survive if we are able to transform the old-fashioned client/server architecture to new web oriented architecture...
In this article we focus on the modelization of the Bonjour Grid protocol which is based on the Publish-Subscribe (Pub-Sub) paradigm, a paradigm for asynchronous communication that is useful for implementing some approaches in distributed programming. The aim of this paper is to isolate the generic mechanisms of construction for the publish-subscribe approach then to model and verify, based on those...
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