High-Performance Cloud Computing: A View of Scientific Applications

Scientific computing often requires the availability of a massive number of computers for performing large scale experiments. Traditionally, these needs have been addressed by using high-performance computing solutions and installed facilities such as clusters and super computers, which are difficult to setup, maintain, and operate. Cloud computing provides scientists with a completely new model of utilizing the computing infrastructure. Compute resources, storage resources, as well as applications, can be dynamically provisioned (and integrated within the existing infrastructure) on a pay per use basis. These resources can be released when they are no more needed. Such services are often offered within the context of a Service Level Agreement (SLA), which ensure the desired Quality of Service (QoS). Aneka, an enterprise Cloud computing solution, harnesses the power of compute resources by relying on private and public Clouds and delivers to users the desired QoS. Its flexible and service based infrastructure supports multiple programming paradigms that make Aneka address a variety of different scenarios: from finance applications to computational science. As examples of scientific computing in the Cloud, we present a preliminary case study on using Aneka for the classification of gene expression data and the execution of fMRI brain imaging workflow.Comment: 13 pages, 9 figures, conference pape

A Methodology for Engineering Collaborative and ad-hoc Mobile Applications using SyD Middleware

Today’s web applications are more collaborative and utilize standard and ubiquitous Internet protocols. We have earlier developed System on Mobile Devices (SyD) middleware to rapidly develop and deploy collaborative applications over heterogeneous and possibly mobile devices hosting web objects. In this paper, we present the software engineering methodology for developing SyD-enabled web applications and illustrate it through a case study on two representative applications: (i) a calendar of meeting application, which is a collaborative application and (ii) a travel application which is an ad-hoc collaborative application. SyD-enabled web objects allow us to create a collaborative application rapidly with limited coding effort. In this case study, the modular software architecture allowed us to hide the inherent heterogeneity among devices, data stores, and networks by presenting a uniform and persistent object view of mobile objects interacting through XML/SOAP requests and responses. The performance results we obtained show that the application scales well as we increase the group size and adapts well within the constraints of mobile devices

Team equilibrium and innovation performance

2013 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other worksToday competition has increased between organizations and they are urged to improve constantly their performance throughout innovation if they want to survive and be profitable. However, an organization can't be innovative if it doesn't counts with creative people and build teams to strength its creative and innovative capabilities. Besides, the impact of technology in innovation has been widely studied but there are others major aspects that need more exploration to understand their influence in it. For example, collaborative work, multicultural teamwork, creative teamwork, entrepreneurial behavior, etc. Some authors suggest more research is needed regarding organization capabilities that promote effective relationships for innovation. According to West (2002), three issues dominated research about creativity and innovation among teams: the characteristics of group tasks and their impact in the creative-innovative process; the role of diversity in knowledge and skills between team members; and team integration. If these issues are relevant for team creativity and innovation, then frameworks and tools to configure teams are necessary. It may be taken by granted that there must be an equilibrium of roles within teams to foster creativity focused on innovation. So, in this paper several approaches of creativity are reviewed. Then a conceptual model to foster Team Equilibrium and strength innovation performance is proposed and applied through a web-based tool. A first empiric exploration is presented. The proposed model can be used as a basis to develop tools that helps teams for self-analysis.Peer ReviewedPostprint (published version