Nowadays, mail services are used rigorously for communication purpose. Due to the widespread demand for mail services, performance degradation may occur for mail servers. Performance is an open issue that is affected by many factors including the technical factors. To identify the factors that have an impact on the performance of the mail services, we have carried out an experimental study by f...

The recently introduced reference ratio method (Hamelryck et al.(2010)) allows combining distributions over fine grained variables with distributions over coarse grained variables in a meaningful way. This problem is a major bottleneck in the prediction, simulation and design of protein structure and dynamics. Hamelryck et al. introduce the reference ratio method in this context, and show that ...

Accurate predictions of cloud and precipitation processes in the marine boundary layer are critical to U.S. Navy operations, as well as being more broadly important to improving seasonable predictability and the performance of NWP models. The major goal of the project is to develop and test state-of-theart boundary layer and microphysical parameterizations in order to better represent the conti...

In this paper, we develop a green handover protocol in two-tier OFDMA macrocell-femtocell networks. To improve the energy efficiency of femtocell base station, the proposed green handover protocol can intelligently switch on its radio communication and associated processing, or called as “wake up” from the idle mode, if the remainder data of a mobile host can be completely uploaded through the ...

In this paper a model for the performance prediction and optimization of air coolers for indirect refrigeration systems is presented. The model applies for finned rube air coolers operating under frosting conditions and considers the transient heat and mass transfer between humid air and air cooler surfaces. The model is extended with an energy consumption analysis for the compression refrigera...

Protein structure prediction from sequence remains a major unsolved problem despite decades of work by the best minds in science. However, the availability of genome-scale data is changing the basis for the computational analysis of biological systems, and organizational patterns previously obscured by limited data sets now are becoming apparent. The opportunity to relate sequence, structure, a...

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Most of the work on behavior prediction on the field of Qualitative Physics has focused on transient behavior and responses to perturbations (de Kleer Brown 1984; Forbus 1984; Kuipers 1985; Williams 1984); very little has been done about behavior of systems in steady state (Sussman & Steele 1980). understanding of the sinusoidal steady state of electrical circuits is important for several reaso...

We present the linear analysis of recent time filters used in numerical weather prediction. We focus on the accuracy and the stability of the leapfrog scheme combined with the Robert–Asselin–Williams filter, the higher-order Robert–Asselin type time filter, the compositetendency Robert–Asselin–Williams filter and a more discriminating filter.

This paper introduces Sybil, an interactive tool for assisting in the teaching of sound synthesis and processing. We have created a ‘browser’ in MSP that permits patchers to be assembled into a structured learning package. All the sophistication and flexibility of MSP is available. Sybil provides text accompanied by examples that students can manipulate in real-time, hearing the results and see...