JXTA-Overlay: a P2P platform for distributed, collaborative, and ubiquitous computing

With the fast growth of the Internet infrastructure and the use of large-scale complex applications in industries, transport, logistics, government, health, and businesses, there is an increasing need to design and deploy multifeatured networking applications. Important features of such applications include the capability to be self-organized, be decentralized, integrate different types of resources (personal computers, laptops, and mobile and sensor devices), and provide global, transparent, and secure access to resources. Moreover, such applications should support not only traditional forms of reliable distributing computing and optimization of resources but also various forms of collaborative activities, such as business, online learning, and social networks in an intelligent and secure environment. In this paper, we present the Juxtapose (JXTA)-Overlay, which is a JXTA-based peer-to-peer (P2P) platform designed with the aim to leverage capabilities of Java, JXTA, and P2P technologies to support distributed and collaborative systems. The platform can be used not only for efficient and reliable distributed computing but also for collaborative activities and ubiquitous computing by integrating in the platform end devices. The design of a user interface as well as security issues are also tackled. We evaluate the proposed system by experimental study and show its usefulness for massive processing computations and e-learning applications.Peer ReviewedPostprint (author's final draft

MAGDA: A Mobile Agent based Grid Architecture

Mobile agents mean both a technology and a programming paradigm. They allow for a flexible approach which can alleviate a number of issues present in distributed and Grid-based systems, by means of features such as migration, cloning, messaging and other provided mechanisms. In this paper we describe an architecture (MAGDA – Mobile Agent based Grid Architecture) we have designed and we are currently developing to support programming and execution of mobile agent based application upon Grid systems

Virtual Research Environment for the ROSSIO infrastructure

Intuitive workspaces are crucial to the productivity of any researcher. In the field of Humanities, researchers usually need to deal with different formats of metadata, often coming from different sources. This is a serious drawback since it makes research a lot more demanding and time consuming. Therefore, shielding the user from this layer of complexity by presenting the data in a user-friendly and accessible interface is of great relevance. Moreover, the exchange of information and resources between researchers is an important aspect regarding the evolution of their work, making it ideal to provide them with a system where they can engage in collaborative activities. ROSSIO is an infrastructure that aims to be a meeting point where researchers have free and intuitive access to diverse digital contents in the areas of Social Sciences, Arts, and Humanities. For instance, this can be accomplished through the creation of a Virtual Research Environment (VRE). To that end, the goal of this dissertation is to develop a VRE that overcomes the mentioned challenges. Once the VRE is developed, researchers will have access to a number of functionalities that facilitate their workflow and research activities.Um ambiente de trabalho e intuitivo é crucial para a produtividade de qualquer investigador. Na área de Humanidades, os investigadores costumam lidar com diferentes formatos de metadados,muitas vezes provenientes de diferentes fontes. Isto é um grande inconveniente, uma vez que torna a investigação muito mais exigente e demorada. Por conseguinte, proteger o utilizador desta camada de complexidade, apresentando os dados numa interface intuitiva e acessível, é bastante vantajoso. Para além disso, a troca de informações e recursos entre investigadores é um aspeto importante no que diz respeito à evolução do seu trabalho, fazendo com que seja ideal fornecer-lhes um sistema onde se possam envolver em atividades de colaboração. O ROSSIO é uma infraestrutura que pretende ser um ponto de encontro onde os investigadores têm acesso aberto e intuitivo a diversos conteúdos digitais nas áreas das Ciências Sociais, Artes, e Humanidades, e uma das suas iniciativas é a criação de um Ambiente Virtual de Investigação (AVI). Para o efeito, o objetivo desta dissertação é desenvolver um AVI que supere os desafios mencionados. Uma vez desenvolvido o AVI, os investigadores terão acesso a uma variedade de funcionalidades que facilitam o seu fluxo de trabalho e as suas atividades de investigação

Technical Report on Deploying a highly secured OpenStack Cloud Infrastructure using BradStack as a Case Study

Cloud computing has emerged as a popular paradigm and an attractive model for providing a reliable distributed computing model.it is increasing attracting huge attention both in academic research and industrial initiatives. Cloud deployments are paramount for institution and organizations of all scales. The availability of a flexible, free open source cloud platform designed with no propriety software and the ability of its integration with legacy systems and third-party applications are fundamental. Open stack is a free and opensource software released under the terms of Apache license with a fragmented and distributed architecture making it highly flexible. This project was initiated and aimed at designing a secured cloud infrastructure called BradStack, which is built on OpenStack in the Computing Laboratory at the University of Bradford. In this report, we present and discuss the steps required in deploying a secured BradStack Multi-node cloud infrastructure and conducting Penetration testing on OpenStack Services to validate the effectiveness of the security controls on the BradStack platform. This report serves as a practical guideline, focusing on security and practical infrastructure related issues. It also serves as a reference for institutions looking at the possibilities of implementing a secured cloud solution.Comment: 38 pages, 19 figures

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Integrating Peer-to-Peer Networking and Computing in the AgentScape Framework

The combination of peer-to-peer networking and agentbased computing seems to be a perfect match. Agents are cooperative and communication oriented, while peerto -peer networks typically support distributed systems in which all nodes have equal roles and responsibilities. AgentScape is a framework designed to support large-scale multi-agent systems. Pole extends this framework with peerto -peer computing. This combination facilitates the development and deployment of new agent-based peer-to-peer applications and services