Modeling and analysis techniques are used to investigate the performance of a massively parallel version of DIRECT, a global search algorithm widely used in multidisciplinary design optimization applications. Several high-dimensional benchmark functions and real world problems are used to test the design effectiveness under various problem structures. Theoretical and experimental results are co...

With the results of version 2.1 a consistent set of performance measurements of the NAS Parallel Benchmarks (NPB) are available. Unchanged portable MPI code was used for this set of 269 single measurements. In this study we investigate how this amount of information can be condensed. We present a methodology for analyzing performance data not requiring detailed knowledge of the codes. For this ...

Thin film bulk acoustic wave (BAW) resonators and filters operating in the GHz range are used in mobile phones for the most demanding filtering applications and complement the surface acoustic wave (SAW) based filters. Their main advantages are small size and high performance at frequencies above 2 GHz. This work concentrates on the characterization, performance optimization, and modelling tech...

The main objective of this paper is to present the factors with influence on the sustainable university management and the relationships between them. In the scientific approach we begin from a graphical model, according to which the extracurricular activities together with internal environmental factors influence students’ involvement in such activities, the university attractiveness, their ac...

This article presents the architecture of SIMTHESysER, a new extendable multiformalism performance evaluation tool generator. SIMTHESysER relies on the main paradigm denoting multiformalism modeling techniques, that is providing the means to define models composed of entities described in different modeling languages. SIMTHESysER defines multiformalism models by separating the properties and re...

This paper deals with the problem of optimum detection of radar signals by means of a multistatic configuration of sensors. Starting from the case of multiple observations, a systematic analysis of the model leads to a unified optimum receiver for signals fluctuating according to Swerling I, II, III & IV models. In these instances the receiver performances are evaluated by adopting an original ...

A standing question in the field of Intelligent Tutoring Systems and User Modeling in general is what is the appropriate level of model granularity (how many skills to model) and how is that granularity derived? In this paper we will explore varying levels of skill generality within 8 grade mathematics using models containing 1, 5, 39 and 106 skills. We will measure the accuracy of these models...

In this paper we present an integrated approach to the functional and performance analysis of software modeling provided by Stochastic Process Algebra (SPA). Three SPA languages have been appeared in the last decade and are widely used for software architecture and performance evaluation. We present these languages with the difference between them and we show by an example the methodology which...

In Islamic Finance (IF hereafter), the safety-first rule of investing (hifdh almal) is held to be of utmost importance. According to the honesty principle (amanah), the Islamic portfolio manager (mudharib) is committed to do his best to fulfill this investing rule. This involves the use of the most appropriate management tools. The use of the normal assumption in the financial modeling is growi...

Performance management seems to be essential in business area and is also an exciting topic. Despite significant and myriads of research efforts, performance management guide today as a rigorous approach is still in an immature state and metrics are often selected based on intuitive and heuristic approach. In R&D side, the difficulty to guide the proper performance management is even more incre...