This paper presents the implementation of MPICH2 over the Nemesis communication subsystem and the evaluation of its shared-memory performance. We describe design issues as well as some of the optimization techniques we employed. We conducted a performance evaluation over shared memory using microbenchmarks. The evaluation shows that MPICH2 Nemesis has very low communication overhead, making it ...

Measuring or predicting the distribution of oxygen concentration in waste rock underneath a soil cover is an important aspect of cover performance evaluation. The oxygen decay coefficient is a key parameter in the prediction. In the present study, a method calculating oxygen decay coefficient from oxygen consumption rate is developed. The decrease in oxygen concentration over time measured abov...

For the microelectronics manufacturing industries that have uncertain demand, high volume cost and Oligarchs characteristics, we often discuss the possibility of competitors on the capacity of strategy. First of all we use the industry data to analysis the manufacturing cost, demand and the historical situation of the revenue and we also discuss the influence about the uncertain demand and high...

This study aims to investigate the effects of the centralized allocation and optimization of Taiwan’s railway resources (personnel and equipment) on the overall operational efficiency of its railway industry, based on the concept of two-phase centralized allocation and reallocation of resources. A Taiwan railway data analysis conducted in 2011 showed that the high overall output due to the effi...

This paper proposes a new approach for communication networks planning; this approach is based on stochastic geometry. We rst summarize the state of the art in this domain, together with its economic implications, before sketching the main expectations of the proposed method. The main probabilistic tools are point processes and stochastic geometry. We show how several performance evaluation and...

This study presents the development and application of a systematic model-based framework for bioprocess optimization. The framework relies on the identification of sources of uncertainties via global sensitivity analysis, followed by the quantification of their impact on performance evaluation metrics via uncertainty analysis. Finally, stochastic programming is applied to drive the process dev...

As more and more Cloud systems are designed and deployed in business and science engineering areas, how to evaluate and monitor the system’s runtime performance is becoming an important issue. However, few efforts are taken to address such an issue because the resources in Cloud systems often owned by different institutes. In this paper, we present an integrated performance evaluation framework...

Image quality assessment (IQA) is a crucial technique in perceptual image/video coding, because it is not only a ruler for performance evaluation of coding algorithms but also a metric for ratio-distortion optimization in coding. In this paper, inspired by the fact that distortions of both global and local information influence the perceptual image quality, we propose a novel IQA method that in...

Abstract This paper considers the Omega function, proposed by Cascon, Keating & Shadwick, as a performance evaluation measure for comparison between financial assets. We discuss the optimization problems which arise when the Omega function is used as a basis for portfolio selection. We show that the problem of choosing invested fractions to maximize Omega typically has many local solutions and ...