Current Web services composition approaches do not take into account transactional requirements defined by designers. The transactional challenges raised by the composition of Web services are twofold: relaxed atomicity and dynamicity. In this paper, we propose a new process to automate the design of transactional composite Web services. Our solution enables the composition of Web services not ...

Memory transactions provide programmers with a convenient abstraction for concurrent programs: a keyword (such as atomic) designating a region of code that appears, from the perspective of concurrent threads, to execute atomically. Unfortunately, existing implementations in the form of software transactional memory (STM) are often ineffective due to their monolithic nature: every single read or...

Bass and his colleagues initiated the empirical investigation of transformational and transactional leadership two decades ago. They proposed that transformational leadership is comprised of four dimensions, that transactional leadership is composed of three dimensions, and that an additional category of non-leadership exists (laissez-faire leadership). The Multifactor Leadership Questionnaire ...

Despite the increasing scope for transactional approaches to corporate political activity (CPA) in emerging markets and rising concerns about the use of relational approaches, foreign firms in emerging economies appear to be reluctant to adopt transactional approaches to CPA. Using Resource Dependence theory we argue that criticality of resources, product diversification, integration with other...

This study aimed to examine the risk factors for engaging in transactional sex among young females in Montserrado County, Liberia. Data from an HIV behavioral survey conducted among young people aged 14 - 25 years were used. The analytical sample included 493 sexually-experienced females. Bivariate and multivariate analyses were conducted. We found that 72% of our sample had ever engaged in tra...

Sex workers have long been considered a high-risk group for HIV infection, but to date little quantitative research has explored the association between HIV risk and exchange of sex for material gain by women in the general population. The objective of this study was to estimate the prevalence of such transactional sex among women attending antenatal clinics in Soweto, South Africa, to identify...

This paper presents a new approach to exclude problems arising from dynamically switching between protected concurrent and unprotected single-threaded use of shared data when using software transactional memory in OO languages such as Java. The approach is based on a simple but effective programming model separating transactions from non-transactional operation. It prevents the application prog...

Many programming languages, such as Clojure, Scala, and Haskell, support different concurrency models. In practice these models are often combined, however the semantics of the combinations are not always well-defined. In this paper, we study the combination of futures and Software Transactional Memory. Currently, futures created within a transaction cannot access the transactional state safely...

Defining persistence in terms of reachability is fundamental to achieving orthogonality of persistence. It is implicit to the principles of orthogonal persistence and is a part of the ODMG 3.0 data objects standard. Although space reclamation in the context of persistence by reachability can be achieved automatically using garbage collection, relatively few papers address the problem of impleme...