This paper presents a comparative study of the performance of the bidirectional ring and the unidirec-tional ring multiprocessor, with emphasis on the eeect of system parameters, speciically, the message length and the relative processor speed. The choice of these parameters may not be optimum due to the performance cost tradeoos in practice. Our study shows that the use of bidirectional ring i...

Introduction. Characterization of useable planetary materials will require high sampling throughput. Although remote observations from orbiting spacecraft provide spatially wide coverage, they do not, by themselves, provide sufficient information for materials utilization purposes. On the other hand, active rover-based in-situ analyses can provide detailed geological information but can be very...

The important developments in industrial fermentation lead to the utilization of microbial enzymes in different applications. Selected organisms Aspergillus fumigatus, A. terreus, Penicillium chrysogenum, P. funiculosum and Fusarium moniliforme. Various environmental parameters like pH, temperature and nutritional parameters such as carbon and nitrogen sources were investigated to optimize the ...

A new, easy to prepare semi-defined medium for the cultivation of trypanosomes of the T. brucei complex is introduced. Containing the two commercially available media MEM (Minimum Essential Medium) and Medium 199 TC45 as well as 10% inactivated foetal calf serum (fcs), the medium supports optimum growth and direct adaptation of bloodstream forms. Growth characteristics, glucose uptake, amino ac...

In this paper we review parallel implementations of some stochas tic global optimization methods on MIMD computers Moreover we present a new parallel version of an Evolutionary Algorithm for global optimization where the inherent parallelism can be scaled to obtain a reasonable processor utilization For this algorithm the convergence to the global optimum with probability one can be assured Tes...

The channel estimation algorithms play a vital role in third generation (3G) communication systems to support efficient spectrum utilization. The transition from 3G to 4G systems is to provide high data rate, error free low complexity system with efficient adaptive techniques. A noisy Channel estimation and feedback error introduces imperfect Channel State Information (CSI). This paper introduc...

BACKGROUND The Omnibus Budget Reconciliation Act of 1990 offered the promise that prospective drug utilization review (pDUR) systems would improve the quality of drug prescribing and patient drug use. There is little evidence that this promise has been fulfilled. To the contrary, there is growing evidence that suboptimal use of drugs (in terms of preventable drug-related morbidity) is at least ...

Factors affecting forage production, quality, marketing, and utilization include urbanization; availability of crop production resources; approaches to environmental stewardship; and other social and economic forces. Two factors of particular interest are 1) availability of pesticides for use in alfalfa and other forage crops; and 2) new laboratory procedures for predicting forage nutritional v...

In this paper we review parallel implementations of some stochas-tic global optimization methods on MIMD computers. Moreover, we present a new parallel version of an Evolutionary Algorithm for global optimization, where the inherent parallelism can be scaled to obtain a reasonable processor utilization. For this algorithm the convergence to the global optimum with probability one can be assured...

Optimization of very expensive black-box functions requires utilization of maximum information gathered by the process of optimization. Model Guided Sampling Optimization (MGSO) forms a more robust alternative to Jones’ Gaussian-process-based EGO algorithm. Instead of EGO’s maximizing expected improvement, the MGSO uses sampling the probability of improvement which is shown to be helpful agains...