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Due to their social influence, several areas research search and rescue field. Mobile robotics is one of them that analyzes and seeks more efficient solutions for search and rescue operations. Multirobot systems are considered to make the procedures more efficient and safe, both for the victim and for the crew. Petri nets are widely diffused for designing discrete events systems, such as networks...
The paper proposes a general approach to the development of neural network algorithms for determining the values of signal parameters in radio-electronic, telecommunication, and information systems from the functional level to the level of nano-elements; the approach is based on the principles of data, image, and signal recognition. Implementation of this general approach is illustrated by a neural...
Wireless sensor networks deployed in industrial monitoring applications are required to gather information about multiple types of data (multi-dimensional) related to the environment. The primary challenge that any WSN presents is energy and latency optimization. Hence, for query resolution about a particular data push and pull methods must be efficiently employed. The A-MDMRA model stores data in...
This work proposes an analytical method for calculating sensitivity index. The proposed method is based on one-at-a-time measurements and calculates the difference between output values and the base solution to define the impact caused by each parameter in the system. The results indicated that the analytical method provides adequate values for the sensitivity index even when the parameters have minor...
The aim of the reduction method is to integrate the reduced model in a multi-physical electric machine optimization procedure and use the obtained model in real-time monitoring of machine critical parts. In this paper, an electric machine thermal model reduction method is proposed. Using the lumped parameter thermal network (LPTN) method, a thermal model is developed in order to represent the thermal...
The report is devoted to the systematization of large terminological texts on the basis of a hierarchical representation of definitions of concepts. By integration, such models form a semantic network of terms. Thanks to the binary, homogeneous and oriented nature of this network, it is possible to obtain a hierarchical representation model and quantitative indices indicators for evaluating the integrity...
Alloyed ohmic contacts to GaAs consist of separate alloyed and unalloyed layers beneath the contact metal layer. (A similar situation is metal to silicide to silicon contacts.) Thus there are three distinct layers separated by two interfaces, each layer having a different resistivity and each interface having a different specific contact resistance. Such a multiple layer contact makes the modeling...
A comparative study of modified models for calculating the switch capacitance of electrostatically actuated fixed-fixed beam MEMS shunt switch has been presented considering the effect of beam perforation and dielectric layer simultaneously. Two different capacitance calculation methods using Yang model and Mejis model have been considered in the analysis incorporating fringing field effect due to...
This paper reviews the literature of technology assessment published over 1977 to 2016 to identify the major research themes over the past four decades. We retrieve 5493 articles from the Web of Science database and construct the citation network among them. By applying the edge-betweenness clustering technique to the citation network and splitting the data into groups, 4 major groups with more than...
In this paper, we obtain approximate solutions of a variable-volatility option pricing model (VVOPM) built upon the classical Black-Scholes option pricing model via the inclusion of variable volatility function. Projected Differential Transform Method (PDTM) is proposed as a method of solution. For effectiveness and robustness of the proposed method, an illustrative case is considered based on some...
The main objective of the presented work is to do a preliminary sensitivity analysis of the simplified neuromusculoskeletal model of the human middle finger that we have already developed [1], [2]. The importance of this study is to improve the model by well estimating internal parameters, which are the most affecting the model output, and by adapting it to each individual. The sensitivity analysis...
The main objective of all eye movements is to keep the image of the object of interest focused. Head motion makes this objective more complex. However, the vestibular system is responsible for eye movement that compensate head motion. Simulating and analysing eye movement in coordination with head and neck movements is useful for assessing visual system contribution to discomfort in different tasks...
A key challenge in the automatic verification of robot mission software, especially critical mission software, is to be able to effectively model the performance of a human operator and factor that into the formal performance guarantees for the mission. We present a novel approach to modelling the skill level of the operator and integrating it into automatic verification using a linear Gaussians model...
This paper proposes to investigate the energy efficiency and the economic impact provided by lighting retrofit in popular housing, verifying the qualitative analysis of light emitting diode lamps replacing compact fluorescents by the evaluation of electrical and lighting parameters. The study evaluated proposal by the Housing Agency of the State of Goiás, Brazil, which will replace conventional light...
An innovative Y-shape power divider (PWD) model is established based on the Kron-Branin formalism. The equivalent topology of Y-PWD is elaborated by considering the constituting elements of classical transmission line (TL). The S-parameter theoretical model is applied to single-input two-output (1:2) unequal Y-PWD. The unequal level of the outputs is controlled with output quarter wavelength branch...
In high-performance computing (HPC), end-to-end workflows are typically utilized to gain insights from scientific simulations. An end-to-end workflow consists of scientific simulation and data analysis, and can be executed in-situ, in-transit, and offline. Existing studies on end-to-end workflows have largely focused on the high-performance execution approaches. However, the emerging heterogeneous...
This paper analyzes the structural properties (defined by traps and siphons) of biological system called Endoplasmic Reticulum Exit Site (ER-ES) by using Petri nets to define liveness of the system. The Snoopy tool has been used to model ER-ES in terms of Petri nets which confirms liveness of the system guarantying absence of the deadlocks by visual display of traps and siphons. As Petri nets have...
Modeling and Simulation (M&S) has become an essential tool in the development, testing and verification of operational software in a complex multi-domain, multi-threaded heterogeneous system of systems environment. The complex systems of today encompass mix of hardware sub-systems (with varying degree of capabilities), software environments (comprising a plethora of development environments, operating...
This paper presents a comparative study on two analytical modelling techniques (i.e. Fourier analysis and Tooth Contour Method), applied to a benchmark topology of a linear permanent magnet synchronous motor (LPMSM). The investigated methods are used for obtaining the thrust force of a LPMSM with significantly reduced computation time (from the order of seconds to the order of milliseconds), compared...
Modeling helps explain the fundamental physics hidden behind experimental data. In the case of material modeling, running one simulation rarely results in output that reproduces the experimental data. Often one or more of the force field parameters are not precisely known and must be optimized for the output to match that of the experiment. Since the simulations require high performance computing...
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