Current Issue : January - March Volume : 2013 Issue Number : 1 Articles : 4 Articles
Increasingly infrastructure providers are supplying the cloud marketplace with storage and on-demand compute\r\nresources to host cloud applications. From an application user�s point of view, it is desirable to identify the most\r\nappropriate set of available resources on which to execute an application. Resource choice can be complex and may\r\ninvolve comparing available hardware specifications, operating systems, value-added services (such as network\r\nconfiguration or data replication) and operating costs (such as hosting cost and data throughput). Providers� cost\r\nmodels often change and new commodity cost models (such as spot pricing) can offer significant savings. In this\r\npaper, a software abstraction layer is used to discover the most appropriate infrastructure resources for a given\r\napplication, by applying a two-phase constraints-based approach to a multi-provider cloud environment. In the first\r\nphase, a set of possible infrastructure resources is identified for the application. In the second phase, a suitable\r\nheuristic is used to select the most appropriate resources from the initial set. For some applications a cost-based\r\nheuristic may be most appropriate; for others a performance-based heuristic may be of greater relevance. A financial\r\nservices application and a high performance computing application are used to illustrate the execution of the\r\nproposed resource discovery mechanism. The experimental results show that the proposed model can dynamically\r\nselect appropriate resouces for an application�s requirements....
With the emergence of new methodologies and technologies it has now become possible to manage large\r\namounts of environmental sensing data and apply new integrated computing models to acquire information\r\nintelligence. This paper advocates the application of cloud technologies to support the information,\r\ncommunication and decision making needs of a wide variety of stakeholders in the complex business of the\r\nmanagement of urban and regional development. The complexity is evident in the socio-economic and\r\nenvironmental interactions and impacts embodied in the concept of the urban-ecosystem. This highlights the\r\nneed for more effective integrated environmental management systems. A key to understanding the nature of\r\nintegrated environmental management systems is the identification of the need for horizontal integration of\r\ninformation across sectoral inter-agency boundaries at the local level, and the need for vertical coordination\r\nbetween levels of governance. This paper offers a user-oriented approach to the specification of requirements for\r\nthe effective management of urban areas and the potential contributions that can be supported by cloud\r\ncomputing. The commonality of the influence of the drivers of change at the urban level offers the opportunity for\r\nthe cloud computing community to develop generic solutions that can serve the needs of hundreds of cities\r\nthroughout Europe and indeed globally. In this respect, different cloud based architecture scenarios are presented\r\nwhich utilise capabilities compliant to various standards in generating information and intelligence for urban\r\ngovernance....
The construction industry has been characterised by fragmentation, lack of integration and\r\ncomplexities in processes and activities. These characteristics could threaten the delivery of project\r\nobjectives which could ultimately have a negative impact on construction project success. The\r\nconstruction industry is associated with numerous activities, processes, organisations and\r\nindividuals. Improving the collaboration between the parties within the construction industry will\r\nenhance productivity whilst maximising efficiency and effectiveness. Providing the construction\r\nindustry parties with access to accurate and up-to-date information along with efficient\r\ncommunications via a reliable, competent and appropriate network is frequently a challenge. The\r\nmain objective of this paper is to investigate the construction collaboration tools along with the\r\nconcepts of cloud computing and context-awareness. The findings in this research are based on a\r\nthorough review of the comprehensive literature on IT, computing and construction. Accordingly,\r\nthis study presents and develops the concepts and potential of innovative collaborative tools, such\r\nas Context-Aware Cloud Computing Information Systems (CACCIS). Implementing CACCIS in the\r\nconstruction industry will facilitate the construction supply chain processes, relations and\r\nnetworks along with increasing the opportunities for enhancing competitive advantages. Firstly, it\r\nis hoped that this study will contribute to improvements in construction industry collaboration\r\nwhich could ultimately improve and enhance its competitive advantages. Secondly, it proposes a\r\nfresh vision of construction industry integration and, most significantly, collaboration in an efficient\r\nway that will eventually maximize productivity and enhance the efficiency and effectiveness of the\r\nconstruction industry....
Cloud computing has dramatically reshaped the whole IT industry in recent years.\r\nWith the transition from IPv4 to IPv6, services running in Cloud computing will face\r\nproblems associated with IPv6 addressing: the notation is too long (39 bytes),\r\nthere are too many variants of a single IPv6 address and a potential conflict may\r\nexist with conventional http_URL notation caused by the use of the colon (:).\r\nThis paper proposes a new scheme to represent an IPv6 address with a shorter,\r\nmore compact notation (27 bytes), without variants or conflicts with http_URL.\r\nThe proposal is known as dot-base62x as it is an IPv6 address with Base62x and uses\r\nthe well-known period (or dot) as a group delimiter instead of the colon. The relative\r\nmerits and demerits of other works that predate this paper have been reviewed\r\nand critically evaluated. Cloud computing, as a continuously emerging mainstream\r\nof network-based applications, is likely to be a forerunner in the use of IPv6 as the\r\nbase protocol. As a result, Cloud computing will benefit most from the new,\r\ncompact and user-friendly textual representation of IPv6 address proposed by\r\nthis paper....
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