This paper describes an effort to discover the highest practical flight velocity possible using air-breathing propulsion powered vehicles. The methodology includes modeling of all the key performance characteristics of a hypersonic vehicle along with a genetic algorithm based optimization study. A flexible and robust geometric modeling scheme based primarily on the use of Bernstein polynomials ...

At present time most system engineers do not have access to cognitive work analysis knowledge or training in terms that they could understand and apply in the system design process. This may lead to specifying systems requirements that do not account for cognitive strengths and limitations of the prospective users. This paper proposes integration of cognitive work demands in the systems enginee...

Modeling techniques are used to solve a variety of practical problems related to processing and scheduling in several domains like manufacturing and embedded systems. In such flexible and dynamic environments, there are complex constraints and a variety of unexpected disruptions. Hence, scheduling remains a complex and time-consuming process and the need for accurate models for optimizing this ...

This article provides a general Bayesian approach to the tasks of linear and nonlinear acoustic echo cancellation (AEC). We introduce a state-space model with latent state vector modeling all relevant information of the unknown system. Based on three cases for defining the state vector (to model a linear or nonlinear echo path) and its mathematical relation to the observation, it is shown that ...

short term prediction of traffic flow is one of the most essential elements of all proactive traffic control systems. although various methodologies have been applied to forecast traffic parameters, several researchers have showed that compared with the individual methods, hybrid methods provide more accurate results . these results made the hybrid tools and approaches a more common method for ...

The increasing complexity of distributed applications requires new modeling and engineering approaches. Such domains require representing the regulating structures explicitly and independently from the acting components (or agents). Organization computational models, based on Organization Theory, have been advocated to specify such systems. In this paper, we present the organizational modeling ...

Micellization of surfactant solutions is a ubiquitous phenomenon in natural systems and technological processes, and its theoretical description represents one of the cornerstone problems in the physical chemistry of colloidal systems. However, successful attempts of quantitative modeling confirmed by experimental data remains limited. We show, for the first time, that the dissipative particle ...