Search results for "SIMULATION"

A numerical meshless particle method in solving the magnetoencephalography forward problem

2012

In this paper, a numerical meshless particle method is presented in order to solve the magnetoencephalography forward problem for analyzing the complex activation patterns in the human brain. The forward problem is devoted to compute the scalp potential and magnetic field distribution generated by a set of current sources representing the neural activity, and in this paper, it has been approached by means of the smoothed particle hydrodynamics method suitably handled. The Poisson equation generated by the quasi-stationary Maxwell's curl equations, by assuming Neumann boundary conditions has been considered, and the current sources have been simulated by current dipoles. The adopted meshless…

The effect of wind on jumping distance in ski jumping depends on jumpers’ aerodynamic characteristics

2022

Several studies have suggested re-evaluation of the wind compensation system (WCS) of the International Ski Federation (FIS). It was introduced in 2009, and since then, the system has been modified considerably, but major shortcomings have still remained. The present study compared the effect of tail/head wind on two reference jumps with different aerodynamic properties (Cd and Cl) during the flight phase. Jump distance and total tangential wind speed data of world cup competitions of the season 2020/2021 were used to analyse the FIS WCS and to offer basic information of wind effects. The correlation between the total tangential wind speed and the jump distance varied strongly among the ana…

Touch Screen Rehabilitation System Prototype Based on Cognitive Exercise Therapy

2014

In recent years the number of rehabilitation patients all over the world is rapidly increasing as society ages and stroke and dementia spread. Continuous rehabilitation helps physical and mental maintenance and recovery. However, the recovery process involves hard and dull work which can result in the patient abandoning the treatment. This problem requires a solution both effective and agreeable. Nowadays, cognitive exercise therapies are widely used to combine mental and physical function recovery. We introduce touch panel ad-hoc developed games into this therapy, motivating the user to actively participate in the rehabilitation and making the whole process reliable and days touch screens …

The Algorithm of a Game-Based System in the Relation between an Operator and a Technical Object in Management of E-Commerce Logistics Processes with …

2021

Machine learning (ML) is applied in various logistic processes utilizing innovative techniques (e.g., the use of drones for automated delivery in e-commerce). Early challenges showed the insufficient drones’ steering capacity and cognitive gap related to the lack of theoretical foundation for controlling algorithms. The aim of this paper is to present a game-based algorithm of controlling behaviours in the relation between an operator (OP) and a technical object (TO), based on the assumption that the game is logistics-oriented and the algorithm is to support ML applied in e-commerce optimization management. Algebraic methods, including matrices, Lagrange functions, systems of differential e…

Achieving Ultra Reliable Communication in 5G Networks: A Dependability Perspective Availability Analysis in the Space Domain

2017

As part of the 5G communication paradigm, ultra reliable communication (URC) is envisaged as an important technology pillar for providing anywhere and anytime services to end users. While most existing studies on reliable communication do not investigate this problem from a dependability theory perspective, those dependability-based studies tend to define reliability merely in the time domain. In this letter, we advocate extending the concept of URC from the dependability perspective also in the space domain . We initiate definitions on cell availability and system availability. The availability and the probability of providing a guaranteed level of availability in a network are analyzed bo…

Computational Demography of Religion: A Proposal

2021

This paper proposes a new approach to the demography of religion and non-religion that builds on and expands agent-based modeling and social simulation techniques developed in prior work by the research teams led by the authors. Traditional demographic approaches to religion and non-religion understandably focus attention on self-reports of religious identity or affiliation, where longitudinal data is most readily available, and they employ a cohort-component methodology to make projections. We argue that demographic projections of religion and non-religion could be enhanced by using multi-agent artificial intelligence models of societies. After artificial societies with suitably cognitivel…

A comparison of different one-diode models for the representation of I–V characteristic of a PV cell

2014

Predictive performance tools are an important factor in the success of any new technology because they permit demonstration of whether a system will be efficient and economically feasible. A reliable predictive tool should allow the designer to optimise system performance and to maximise the cost effectiveness of a system prior to installation. This article discusses the five main parametric models for photovoltaic (PV) systems available in the literature. The current–voltage characteristics of a photovoltaic module can be reproduced modelling the PV panel as an equivalent electrical circuit made of linear and non-linear components. The parameters describing such components are directly rel…

MATLAB-based simulator of a 5 kW fuel cell for power electronics design

2013

Abstract In the last few years, renewable energies have been encouraged by worldwide governments to meet energy saving policies. Among renewable energy sources, fuel cells have attracted much interest for a wide variety of research areas. Since combined heat-power generation is allowed, household appliances are still the most promising applications. Fuel cell-based residential-scaled power supply systems take advantage by simultaneous generation of power and heat, reducing the overall fossil fuel consumption and utilities cost. Modelling is one of the most important topic concerning fuel cell use. In this paper, a measurement-based steady-state and dynamic fuel cell model is presented. The …

Neemo: New electrical energy from marine oscillation

La renta mínima como instrumento para combatir la pobreza : el caso de la Comunidad Valenciana

2020

Recientemente, la Comunidad Valenciana ha reformado la renta mínima y ha instaurado la denominada renta valenciana de inclusión (RVI). En este trabajo realizamos una evaluación de este programa utilizando técnicas de microsimulación a partir de microdatos proporcionados por la Administración valenciana.Se hace una descripción del nuevo programa respecto a la anterior renta garantizada de ciudadanía (RGC), que ha mostrado problemas de agotamiento, y se señalan las diferencias más relevantes. A partir de los datos existentes, calculamos el coste presupuestario estimado de la RVI y los efectos de este programa en términos de pobreza y desigualdad. Aunque el gasto se incrementará respecto a la …