http://www.seipub.org/pccr/RSS.aspxen-US2014-0<p class="abstract">Supporting Lean Software Enterprises with Agile Development Methods-Identifying the Relationship between Lean and Agile</p><ul><li>Pages 1-11</li><li>Author Harri KaikkonenJanne HärkönenHarri HaapasaloPilar Rodrígue</li><li>Abstract Lean principles have been seen as a potential answer to the current issues of faster development cycles and more frequent releases, as software businesses are changing towards more service-oriented offerings and cloud-based business structures. Agile software development methods have played an important role in resolving the same issues at development level. This article creates a framework for lean software enterprise theory by linking lean theory, lean software development, and agile software development methods. The findings are tested through an empirical study conducted in two significant software engineering organizations. This article presents a conceptual lean software development system that clearly combines lean and agile. The important role of people and culture is also emphasized. Agile software development methods are characterized as the tools of lean software development and while lean software development is seen as a change beyond agile, agile approach is required for competitive advantage.</li></ul>http://www.seipub.org/pccr/PaperInfo.aspx?ID=8727Parallel and Cloud Computing Researchhttp://www.seipub.org/pccr/PaperInfo.aspx?ID=87272014-0<p class="abstract">A Parallel Version of COCR Method for Solving Complex Symmetric Linear Systems</p><ul><li>Pages 12-18</li><li>Author Xianyu ZuoYang LiuLitao ZhangHe Men</li><li>Abstract In this paper, a parallel Conjugate Orthogonal Conjugate Residual (COCR) method (PCOCR method, in brief) for solving complex symmetric linear systems is proposed for distributed parallel environments. The method reduces two global synchronization points to one by reconstructing COCR method and all inner products per iteration are independent and communication time required for inner product can be overlapped efficiently with computation time of vector updates. It combines the elements of numerical stability with the characters of designed parallel algorithms. The cost is only slightly increased computation. Performance analysis shows that PCOCR method has better parallelism and scalability than COCR method and the global communication performance can be improved 50%. Meanwhile, numerical experiments show that PCOCR and COCR have the same numerical stability.</li></ul>http://www.seipub.org/pccr/PaperInfo.aspx?ID=12137Parallel and Cloud Computing Researchhttp://www.seipub.org/pccr/PaperInfo.aspx?ID=121372014-0<p class="abstract">The Evolution of Environment for Collaborative Mobile Cloud-Proposals Advanced Mobile Cloud Service Model</p><ul><li>Pages 19-26</li><li>Author Sumi SongSvetlana KimYongIk Yoo</li><li>Abstract Cloud Computing technology has been applied to mobile devices. A variety of tasks is made possible despite the technical limitations. Also, the Cloud can be treated as a virtual space between devices. So, each of the mobile devices can share their own superfluous resources in the Cloud. It is expected to be a good solution for preventing the waste of IT resources and increasing working efficiency. So, in this journal, models of collaboration with mobile cloud are proposed to equip environment with cooperative work and group service. We expect that this proposition will be a help in understanding the mobile cloud collaboration</li></ul>http://www.seipub.org/pccr/PaperInfo.aspx?ID=15389Parallel and Cloud Computing Researchhttp://www.seipub.org/pccr/PaperInfo.aspx?ID=15389