This paper is concerned with the scalability of large-scale grid monitoring and information services, which are mainly used for the discovery of resources of interest. Large-scale grid monitoring systems have to balance between three competing performance metrics: query response time, imposed network overhead, and information freshness. Improving one of the three metrics will affect another; an...

The Proteus language is a wide-spectrum parallel programming notation that supports the expression of both high-level architecture-independent speciications and lower-level architecture-speciic implementations. A methodology based on successive reenement and interactive experimentation supports the development of parallel algorithms from speciication to various eecient architecture-dependent im...

This paper investigates the impact of the US and China’s foreign aids to Africa on trade flows between donor and recipient countries. Evidence from the gravity model estimates reveals that the two donors’ exports are strengthened by their aids to African partners. Interestingly, China’s aid shows a positive effect on its total volume of trade and imports from Africa, while the aid from the US e...

T he parallel processing issue must be addressed on three levels: (1) Architectural issues include how to organize and implement computers that have multiple processing elements. (2) Software issues include applications and sys tem software. (3) Algorithm issues involve how io design parallel algorithms. l Architects of parallel-processing s y s tems struggle with important trade-offs. Their ch...

Due to recent advances in data science the importance of data is increasing also in the domain of business process management. To reflect the paradigm shift towards data-awareness in service compositions, in previous work, we introduced the notion of data-aware choreographies through cross-partner data objects and cross-partner data flows as means to increase run time flexibility while reducing...

Abstract The global spread of the digital revolution and need to manage climate have radically altered international trade landscape rendered architecture World Trade Organization ill-equipped address emerging regulatory challenges posed by cross-border flows products carbon emissions embodied in traded goods services. This essay reviews set papers published this issue Oxford Review Economic Po...

This paper investigates whether the gravity model (GM) can explain the statistical properties of the International Trade Network (ITN). We fit data on international-trade flows with a GM specification using alternative fitting techniques and we employ GM estimates to build a weighted predicted ITN, whose topological properties are compared to observed ones. Furthermore, we propose an estimation...

In an attempt to provide an on-line payment mechanism for large-dollar cross-border transactions, TradeCard Inc. developed the world's first and only "credit card" for international trade. This case study discusses the major issues surrounding the viability of such a B2B electronic payment architecture. How would TradeCard provide a seamless and secure on-line settlement transaction? Is its pla...

IEC 61499 is a reference architecture for constructing Industrial Cyber-Physical Systems (ICPS). However, current function block development environments only provide limited fault-finding capabilities. There need comprehensive diagnostic tools that help engineers identify faults, both during and after deployment. This article presents the software an agent-based fault engine equips agents with...

This paper presents a detailed complexity-quality analysis of various transcoding architectures that perform spatial resolution reduction. In addition to the Reference architecture, two additional architectures are considered. The optimization of several processing components, including the down-sampling operation, is presented. We have found that the two additional architectures provide a good...