Search results for "Reference"

Preference Oriented Measurement of Advertising Response

2015

As the information overload and an extension of the mass media reduces the possibility to get the message to the target group, the firms have to increase their advertising budget to reach the same amount of ad contacts. To be sure, that they don’t waste the money, the companies more often use the instrument of pretesting the commercial campaign. The aim of this paper is to document the advantages of the conjoint-analysis (CA) as a technique for pretesting ads. To evaluate the possibility of using the CA we try in to measure in an empirical study, if informative and emotional ads have an influence on the preferences of the respondent.

Work-related and personal predictors of COVID-19 transmission: evidence from the UK and USA

2021

ObjectiveTo develop evidence of work-related and personal predictors of COVID-19 transmission.Setting and respondentsData are drawn from a population survey of individuals in the USA and UK conducted in June 2020.Background methodsRegression models are estimated for 1467 individuals in which reported evidence of infection depends on work-related factors as well as a variety of personal controls.ResultsThe following themes emerge from the analysis. First, a range of work-related factors are significant sources of variation in COVID-19 infection as indicated by self-reports of medical diagnosis or symptoms. This includes evidence about workplace types, consultation about safety and union memb…

The performance of the INLSA in comparison with the ESPRIT and SAGE algorithms

2014

In this paper we investigate the application potential of three known algorithms, namely the ESPRIT, SAGE and INLSA, to properly emulate the statistical properties of the mobile fading channel. The performance comparisons of those methods will be carried out with respect to their fitting accuracy to the autocorrelation function (ACF) of the reference model. The methods' accuracy will be assessed in the synthetic reference channel model, which is based on the sum-of-cisoids (SOC) principle. In our reference model, we consider the scenarios with equal gains and Rayleigh distributed gains. The obtained results indicate that in both scenarios the INLSA method is more preferable than the ESPRIT …

Inovācijas, pētniecība, zinātne

2013

Quantum computing algorithms and peat extracts, a Chinese dictionary and skin stem cells, carbon nanowire switches and a catalogue of stars – the research results produced by the University of Latvia scientists are as varied as the directions of studies at the University of Latvia. Our goal is to provide science-based higher education in the key areas of consequence for Latvia’s people, economy, nature and public health, to make Latvia known in the world through our achievements in science and innovation. Over the past few years the research of the UL scientists has been extremely productive, largely due to the European Union funds to support graduate and doctoral students, new research gro…

Water need of Energy Crops – one of the environmental problems of Poland

2010

The government policy updates of Poland are presented, showing legal and financial instruments for governing bioenergy developments. The strategy for renewable energy must be co-ordinated with the strategy of water management in the country. The water needs are given for cool climate and extensive agriculture of Central and Eastern Europe which are few times lower than for hotter condition of Southern Europe. Despite this the rain would be not enough for water supply of most of the energy crops.

Conséquences des variations de teneur en sel, sucre, et matière grasse sur les préférences et les consommations alimentaires des enfants

2011

Background: In France, the National Nutrition and Health Programme (“Programme National Nutrition Santé” or “PNNS”) is in charge of implementing the recommendations aiming at reducing salt, sugar and fat quantities in foods. However, the extent to which this might impact children’s food preferences and intake is limited. Objective: The present work aimed at understanding the impact of varying salt, sugar and fat variations in foods, on toddlers and children’s food preferences and intake. Methods: Studies were conducted in toddlers’ and children’s natural eating environment (nursery and school canteen), at their usually scheduled lunch and/or snack times. Results: Concerning sucrose, the add…

Compte-rendu de fin de projet. ANR PUNCH, Programme générique 2015

2022

Insights into SoRa: A Reference Architecture for Cyber-physical Social Systems in the Industry 4.0 Era

2020

Design of Wideband MIMO Car-to-Car Channel Models Based on the Geometrical Street Scattering Model

2012

Published version of an article in the journal: Modelling and Simulation in Engineering. Also available from the publisher at: http://dx.doi.org/10.1155/2012/264213 Open access We propose a wideband multiple-input multiple-output (MIMO) car-to-car (C2C) channel model based on the geometrical street scattering model. Starting from the geometrical model, a MIMO reference channel model is derived under the assumption of single-bounce scattering in line-of-sight (LOS) and non-LOS (NLOS) propagation environments. The proposed channel model assumes an infinite number of scatterers, which are uniformly distributed in two rectangular areas located on both sides of the street. Analytical solutions a…

Neural based MRAS sensorless techniques for high performance linear induction motor drives.

2010

This paper proposes a neural based MRAS (Model reference Adaptive System) speed observer suited for linear induction motors (LIM). Starting from the dynamical equation of the LIM in the synchronous reference frame in literature, the so-called voltage and current models of the LIM in the stationary reference frame, taking into consideration the end effects, have been deduced. Then, while the inductor equations have been used as reference model of the MRAS observer, the induced part equations have been discretized and rearranged so to be represented by a linear neural network (ADALINE). On this basis, the so called TLS EXIN neuron has been used to compute on-line, in recursive form, the machi…