A Review on Present State-of-the-Art of Self Adaptive Dynamic Software Architecture

Enterprises across the world are increasingly depending on software to drive their businesses. It is more so with distributing computing technologies in place that pave way for realization of seamless business integration. On the other hand those complex software systems are expected to adapt changes dynamically without causing administrative overhead. Moreover software systems should exhibit fault tolerance, location transparency, availability, scalability self-adaptive capabilities to fit into present enterprise business use cases. To cope with such expectations software systems are to be built with a dynamic and self-adaptive software architecture which drives home quality of services perfectly. The point made here is that software systems are facing unprecedented level of complexity and aware of self-adaptation. Therefore it is essential to have technical knowhow pertaining to self adaptive dynamic software architecture. Towards this end, we explore present state-of-the-art of this area in software engineering domain. It throws light into dynamic software architectures, distributed component technologies for realizing such architectures, besides dynamic software composition and metrics to evaluate the quality of dynamic adaptation

Computação em nuvem

48 p.A computação em nuvem tem se estabelecido nos últimos anos como uma importante plataforma de pesquisa que apresenta uma série vantagens e de estimulantes desafios. A disponibilidade destes recursos agrega uma série de vantagens para as organizações e usuários, visto que preocupações com complexas instalações e manutenções de infra-estruturas deixam de existir e passam a ser de exclusiva responsabilidade dos provedores de serviços, além de possibilitar que os usuários se concentrem exclusivamente nas regras dos negócios que lhes são pertinentes. Este cenário de escalabilidade de serviços, processos e infra-estrutura quase ilimitados não possui precedentes e efetivamente melhora a flexibilidade relacionada a estruturas de tecnologia de informação (TI) bem como pode diminuir o custo total dos negócios pelo provimento de serviços sob demanda.Data provável de publicaçã

The Impact of Cloud Computing in Supply Chain Collaborative Relationships, Collaborative Advantage and Relational Outcomes

The purpose of this study is to explore the collaborative advantages and relational outcomes that organizations obtain from having strong collaborative relationships. With business competing as supply chains of multiple relationships, the reliance on inter-firm relationships has increased and become central strategy for organizations. Logistics computing technologies in the cloud may facilitate collaboration in the supply chain, although there are conflicting viewpoints regarding cloud viability. This study also evaluates the effect that cloud computing technology has on collaborative advantage and relational outcomes in small and large organizations. The model developed here is based on a cross-disciplinary theoretical perspective, which combines the relational view of the firm, the transaction cost economics and the task technology fit theories. This study demonstrates that maintaining collaborative relationships provide value added capabilities that logistics organizations require in order to remain competitive and be successful in some cases strengthen by the use of cloud computing

Integrated lifecycle requirements information management in construction

Effective management of information about client requirements in construction projects lifecycle can contribute to high construction productivity; within budget and schedule, and improve the quality of built facilities and service delivery. Traditionally, requirements management has been focused at the early stages of the construction lifecycle process where elicited client requirements information is used as the basis for design. Management of client requirements does not extend to the later phases. Client requirements often evolve and change dramatically over a facility’s life. Changing client requirements is one of the principal factors that contribute to delays and budget overruns of construction projects. This results in claims, disputes and client dissatisfaction. The problems of current requirements management process also include: lack of integrated and collaborative working with requirements; lack of integrated requirements information flow between the various heterogeneous systems used in the lifecycle processes, and between the multiple stakeholders; inefficient and ineffective coordination of changes within the lifecycle processes; manual checking of dependencies between changing requirements to facilitate assessment of cost and time impact of changes. The aim of the research is to specify a better approach to requirements information management to help construction organisations reduce operational cost and time in product development and service delivery; whilst increasing performance and productivity, and realising high quality of built facilities. In order to achieve the aim and the formulated objectives, firstly, a detailed review of literature on related work was conducted. Secondly, the research designed, developed and conducted three case studies to investigate the state-of-the-art of managing client requirements information. A combination of multiple data collection methods was applied which included observations, interviews, focus group and questionnaires. Following this, the data was analysed and problems were identified; the necessity for a lifecycle approach to managing the requirements information emerged. (Continues...)

Essays on antecedents and consequences of cloud computing capabilities in organizations: an empirical analysis of field data

Cloud computing is widely recognized as a potential disruptive paradigm that changes how IT is consumed and business is conducted in various industries. Managerial and academic literature has shown that cloud computing may benefit firms in various ways such as cost savings, fast project development, and business innovation. Nevertheless, there are many different interpretations and perceptions of cloud computing about how to better prepare for and use it in the information systems (IS) literature. A systematic analysis is necessary to clarify the equivocal issues around cloud computing and guide managers to better understand and utilize cloud computing in practice. This dissertation addresses several important relationships around cloud computing using theoretical models and empirical data as a representation of how the questions about cloud computing may be investigated in the IS literature and how the findings may benefit organizations in using cloud computing. Therefore, the dissertation comprises three connected chapters that address one important antecedent of cloud computing adoption – internal IT modularity within firms and two important consequences – firm performance and strategic alliance formation. It is found that in order to better prepare for cloud computing adoption, firm users can do something themselves by modularizing their internal IT systems. Firms also need to know whether and how cloud computing, after all, can benefit their firm performance or other activities such as strategic alliance formation. The findings show that cloud computing overall and its various specific cloud services may promote firm performance directly or complementarily with internal enterprise resources. Cloud computing and its specific cloud services may also exert different effects on strategic alliance formation. This dissertation systematically addresses the issues around cloud computing in the IS literature and sheds lights on how such a study can be applied to help managers and decision makers in industries to better understand and use cloud computing to achieve their business goals