Feature-based configuration management of reconfigurable cloud applications

A recent trend in software industry is to provide enterprise applications in the cloud that are accessible everywhere and on any device. As the market is highly competitive, customer orientation plays an important role. Companies therefore start providing applications as a service, which are directly configurable by customers in an online self-service portal. However, customer configurations are usually deployed in separated application instances. Thus, each instance is provisioned manually and must be maintained separately. Due to the induced redundancy in software and hardware components, resources are not optimally utilized. A multi-tenant aware application architecture eliminates redundancy, as a single application instance serves multiple customers renting the application. The combination of a configuration self-service portal with a multi-tenant aware application architecture allows serving customers just-in-time by automating the deployment process. Furthermore, self-service portals improve application scalability in terms of functionality, as customers can adapt application configurations on themselves according to their changing demands. However, the configurability of current multi-tenant aware applications is rather limited. Solutions implementing variability are mainly developed for a single business case and cannot be directly transferred to other application scenarios. The goal of this thesis is to provide a generic framework for handling application variability, automating configuration and reconfiguration processes essential for self-service portals, while exploiting the advantages of multi-tenancy. A promising solution to achieve this goal is the application of software product line methods. In software product line research, feature models are in wide use to express variability of software intense systems on an abstract level, as features are a common notion in software engineering and prominent in matching customer requirements against product functionality. This thesis introduces a framework for feature-based configuration management of reconfigurable cloud applications. The contribution is three-fold. First, a development strategy for flexible multi-tenant aware applications is proposed, capable of integrating customer configurations at application runtime. Second, a generic method for defining concern-specific configuration perspectives is contributed. Perspectives can be tailored for certain application scopes and facilitate the handling of numerous configuration options. Third, a novel method is proposed to model and automate structured configuration processes that adapt to varying stakeholders and reduce configuration redundancies. Therefore, configuration processes are modeled as workflows and adapted by applying rewrite rules triggered by stakeholder events. The applicability of the proposed concepts is evaluated in different case studies in the industrial and academic context. Summarizing, the introduced framework for feature-based configuration management is a foundation for automating configuration and reconfiguration processes of multi-tenant aware cloud applications, while enabling application scalability in terms of functionality

Competencies for Improving Construction Performance: theories and practice for developing capacity

The focus on improving construction performance has been narrow in many nations using partnering,leanness and supply chain management. This paper asks three practical construction related questionsconcerning reinventing the wheel across projects, blame culture and continuity of service. In addressingthese practical issues, three theories are engaged: organisational learning, emotional intelligence andrelationship management. The solutions are enhanced through applying the concepts and, indeed, thereis synergy between the concepts. The solutions require investment for the expected return, the theoreticalsynergy maximising the benefits from the investment. It is argued that such an approach has as much, ifnot more chance, to yield improvement in construction. The starting point are issues faced in constructionand theory is induced through addressing the problems, rather than starting with concepts applied inother sectors and then trying to squeeze them into the construction context

Investigating the learning transfer of genre features and conceptual knowledge from an academic literacy course to business studies: Exploring the potential of dynamic assessment

Academic literacy courses aim to enable higher education students to participate in their chosen academic fields as fully as possible. However, the extent to which these students transfer the academic skills taught in these courses to their chosen disciplines is still under-researched. This article reports on a study that investigated the potential of dynamic assessment (an assessment approach that blends instruction into assessment) in the transfer of genre features and conceptual knowledge among undergraduate business studies students in a UK public university. The data includes three students’ written assignments (N = nine), interviews (N = three) and business studies tutor (N = three) feedback. Drawing on Vygotskian sociocultural theory of learning and a genre theory based on Systemic Functional Linguistics, the data were analysed. The findings suggest that dynamic assessment may contribute to the transfer of genre features and conceptual knowledge to a new assessment context. Implications of this for academic literacy instruction and assessment design are presented

An approach to relate business and application services using ISDL

This paper presents a service-oriented design approach that allows one to relate services modelled at different levels of granularity during a design process, such as business and application services. To relate these service models we claim that a 'concept gap' and an 'abstraction gap' need to be bridged. The concept gap represents the difference between the conceptual models used to construct service models by different stakeholders involved in the design process. The abstraction gap represents the difference in abstraction level at which service models are defined. Two techniques are presented that bridge these gaps. Both techniques are based on the Interaction System Design Language (ISDL). The paper illustrates the use of both techniques through an example

Further Thoughts on CRM

Skepticism and disappointment have replaced the initialenthusiasm about CRM. The disappointing results ofCRM-projects are often related to difficulties thatmanagers encounter in embedding CRM in their strategyand organization structure. In this article we presenta classification scheme on how CRM can be strategicallyembedded in organizations using the value disciplinesof Treacy and Wiersema. We use the findings from threecase studies to illustrate our classification. Based onthese case studies and interviews with managers wedistinguish between strategic and tactical CRM, andderive important issues that managers should considerbefore successfully implementing CRM.customer relationship management;marketing strategy;marketing performance