Search results

eScience workflows use orchestration for integrating and coordinating distributed and heterogeneous scientific resources, which are increasingly exposed as web services. The rate of growth of scientific data makes eScience workflows data‐intensive, challenging existing workflow solutions. Efficient methods of handling large data in scientific workflows based on web services are needed. The purpse of this paper is to address this issue.

In a previous paper the authors proposed Data‐Flow Delegation (DFD) as a means to optimize orchestrated workflow performance, focusing on SOAP web services. To improve the performance further, they propose pipelined data‐flow delegation (PDFD) for web service‐based eScience workflows in this paper, by leveraging from the domain of parallel programming. Briefly, PDFD allows partitioning of large datasets into independent subsets that can be communicated in a pipelined manner.

The results show that the PDFD improves the execution time of the workflow considerably and is capable of handling much larger data than the non‐pipelined approach.

Execution of a web service‐based workflow hampered by the size of data can be facilitated or improved by using services supporting Pipelined Data‐Flow Delegation.

Contributions of this work include the proposed concept of combining pipelining and Data‐Flow Delegation, an XML Schema supporting the PDFD communication between services, and the practical evaluation of the PDFD approach.

The paper gives design guidelines for polymer thick‐film technology (PTF). After an introduction reviewing the main PTF properties, materials and processes, detailed PTF design rules are presented. They are conservative, to achieve high production yield. The design rules are based on the considerable experience in the companies of the authors and of the persons mentioned in the acknowledgements, as well as on information from the open literature and from materials suppliers. The design guidelines are intended primarily for designers, but they are also important for production personnel, to facilitate a close coupling between design and production, and thus provide optimum use of PTF and obtain high production yield.

The purpose of this paper is to identify the impact of relational norms on project success in different project governance contexts.

A worldwide web-based questionnaire yielded 200 responses. Results from regression analyses supported the hypothesis that relational norms impact project success. Hierarchical regression analyses showed the moderating effect of governance and control on the relationship between relational norms and project success.

Relational norms in the buyer-supplier relationship are positively associated with project success. This relationship is moderated by the strictness of project governance, especially the level of flexibility left to the project manager. Lower levels of managerial flexibility are detrimental to project success in cases of weak relational norms and supportive of project success in cases of high relational norms.

Academic implications stem from the indication that control has a low influence on the relationship between relational norms and project success, but that the level of managerial flexibility ultimately influences the choice of relational norms needed for a project to be successful.

Clear organizational structures and methodologies are supportive of project success in cases of good relational norms. Therefore, project management training should focus on the relationship building capabilities of project managers, to leverage investments in existing methods and organizational structures.

The paper extends the insights of the importance of soft aspects in managing projects across organizational borders and different governance structures.

The aim of this paper is to investigate the effect of the prior relationship length and employments of supplier specific investments on buyers' control, and compare this effect across international and domestic business-to-business relationships.

The sampling frame consisted of members of a National Association Purchasing and Logistics, and the respondents were asked to select one major supplier that would serve as a referent in answering the questions. In total, 156 purchasing firms responded to the questionnaire, and multiple regression analysis was used to test the hypotheses.

Under condition with substantial supplier specific investments, buyers' control relaxes significantly as the length of the relationship increases in international supplier-buyer relationships, while such change in governance pattern is completely absent in domestic relationships.

This study is based on a cross-sectional design and does not fully capture the dynamics of business-to-business relationships. Future research should use different methodologies such as longitudinal studies to examine dynamic relationships among the constructs in the study.

When strong inter-firm dependency is present, the level of buyer control in relationships with foreign suppliers is typically high in the early stage of the relationships in order to handle the problems of information asymmetry and prospective opportunistic behavior, and decline as the buyer's experiential knowledge with the foreign supplier increases with successive lower performance ambiguity. This governance pattern is less evident in domestic business-to-business relationships due to the potential effect of stronger reputation effects and stronger familiarity with current standards of trade.

The paper contributes to the understanding that the changes in governance form over time will be highly contingent on the level of information asymmetry and inter-firm dependency in the early stage of the exchange relationship.

Aim of the present monograph is the economic analysis of the role of MNEs regarding globalisation and digital economy and in parallel there is a reference and examination of some legal aspects concerning MNEs, cyberspace and e‐commerce as the means of expression of the digital economy. The whole effort of the author is focused on the examination of various aspects of MNEs and their impact upon globalisation and vice versa and how and if we are moving towards a global digital economy.

The article focuses on varying protest intensities of social movement activists in an authoritarian political environment. Drawing on a sample of participants in El Salvador's El movimiento popular, the paper examines how structural location in the resistance movement's multi-sectoral organizational infrastructure shapes the level of participation. Those motivated by state repression and maintaining multiple or cross-sectoral organizational ties exhibited higher levels of protest participation. The findings suggest that more attention be given to how the multi-sectoral network structure of opposition coalitions induces micro-mobilization processes of individual participation in high-risk collective action.

The Register of Current Research in the field of Physical Distribution Management has been compiled from the response to a request for such information made to Universities in 23 countries throughout the world. The last register was published in 1972 in this journal.

The purpose of this paper is to examine the effect on earnings quality in private firms caused by a negative shock to fundamental performance, while simultaneously addressing methodological challenges measuring fundamental performance present in prior accrual-based earnings management literature.

Fundamental performance is unobservable and, therefore, difficult to measure. Existing research has used proxies that are subject to estimation errors and endogeneity concerns (e.g. DeFond and Park, 1997, Balsam et al., 1995). This study attempts to overcome these issues by taking advantage of the exogenous shock in oil price which occurred in 2014 and by using a difference-in-differences approach to investigate the effect on earnings management caused by a negative shift in fundamental performance.

The results suggest that a negative shock in fundamental performance, indicated by the oil price shock in 2014, reduces earnings quality. This result holds for various robustness tests such as the use of propensity score matching, and the inclusion of firm fixed effects. Additional analysis suggests that the reduction in earnings quality is driven by an increase in positive discretionary accruals, suggesting that managers of private firms experiencing poor performance manage earnings upwards to conceal true performance.

This study contributes to the literature by examining the effect of a negative shock to performance in a setting of private firms and by addressing methodological challenges in prior literature. Private firms are fundamentally different from public firms, with the consequence that results from public firms may not be generalizable to private firms (e.g. Hope et al., 2012, Burghstahler et al., 2006, Ball and Shivakumar, 2005).