Search results for " Distance"
showing 10 items of 696 documents
Cultural Distance and International Trade in Services: A Disaggregate View
2020
Abstract In this paper, we estimate the effect of “cultural distance” on bilateral trade in services. The measure of cultural distance we use is based on scores that reflect country averages of individuals’ attitudes towards inequality, self-orientation, competition, uncertainty, traditions, and indulgence. Controlling for standard ingredients of gravity equations, we show that an aggregate measure of cultural distance has a significantly negative effect on total bilateral services trade. Once we take a more disaggregate view, we find that the strength of this effect differs across various types of services and various aspects of cultural distance.
Regional inequalities as drivers of affective polarization
2022
This paper investigates divergences in levels of affective polarization across Belgian regions around the 2019 elections. Elaborating on the relative deprivation theory, we analyse the role of current and long-term socio-economic regional inequalities and of geographical distance separating regions. Empirically, we aggregate individual-level measures of affective polarization at the Belgian NUTS-3 level and use a gravity approach to explore the determinants of regional divergences. Our results show that regional variations in affective polarization are best explained by a current rural–urban divide and by how regions have performed economically in the last years. We also show that geographi…
Open-Source software in OR education
2010
24th European Conference on Operational Research (EURO XXIV). Lisboa, 11 a 14 de Julho de 2010 (Comunicação). This contribution will focus on Computational Tools of Open-Source Software in OR Education. Some educational experiences in the area of Forecasting; Simulation; Graphs and Networks; Decision Theory and Linear Programming based on: R 2.10.0, Scilab 5.1.1 and an Open Source Spreadsheet will be illustrated, with a brief reference to the acceptance of pupils and colleagues.
Associations Between Online Learning, Smartphone Addiction Problems, and Psychological Symptoms in Chinese College Students After the COVID-19 Pandem…
2022
BackgroundSmartphone-based online education gained popularity during and after the COVID-19 pandemic. Although recent studies have highlighted the association between problematic smartphone use (PSU) and mental health symptoms, the potential role of online learning in this relationship remains unclear. This study aimed to analyze the relationships between higher education modes, PSU, and related psychological symptoms in university students.MethodsA total of 1,629 Chinese university students from five provinces completed a web-based questionnaire survey between March 2020 and October 2021. Demographic characteristics and learning conditions were recorded. All participants completed the Smar…
Enseignement à distance : équité ou efficacité
2000
International audience; Cet article a pour objet de montrer que l'enseignement à distance universitaire français ne répond pas de façon satisfaisante ni aux critères d'équité qui sont pourtant à l'origine de la mise en place de ce mode d'accès aux études, ni aux critères de l'analyse coût-efficacité. Il met en évidence un certain nombre de causes qui peuvent expliquer pourquoi l'approche française de l'enseignement à distance est peu efficiente.
Utilització d'una eina online per a la realització de tutories remotes: una experiència pràctica
2010
Elluminate Live! és un producte comercial dissenyat específicament per a la impartició de classes virtuals i la vídeo conferència entre múltiples usuaris. En aquest article, vam analitzar el seu ús en el context de la realització de tutories remotes en l'assignatura Informàtica, de primer curs de la titulació de Llicenciatura en Matemàtiques en la Universitat de València. A més de constituir una alternativa viable com complement a les tutories presencials, l'ús de l'eina proporciona una sèrie d'avantatges pel que fa a aquestes. Entre elles destaca la possibilitat de supervisar el treball de diversos alumnes de forma simultània, de realitzar explicacions a grups i de facilitar el treball coo…
Conservative swept volume boundary approximation
2010
We present a novel technique for approximating the boundary of a swept volume. The generator given by an input triangle mesh is rendered under all rigid transformations of a discrete trajectory. We use a special shader program that creates offset geometry of each triangle on the fly, thus guaranteeing a conservative rasterization and correct depth values. Utilizing rasterization mechanisms and the depth buffer we then get a conservative voxelization of the swept volume (SV) and can extract a triangle mesh from its surface. This mesh is simplified maintaining conservativeness as well as an error bound measured in terms of the one-sided Hausdorff distance. For this we introduce a new techniqu…
Hand Held 3D Scanning for Cultural Heritage: Experimenting Low Cost Structure Sensor Scan
2017
In the last years 3D scanning has become an important resource in many fields, in particular it has played a key role in study and preservation of Cultural Heritage. Moreover today, thanks to the miniaturization of electronic components, it has been possible produce a new category of 3D scanners, also known as handheld scanners. Handheld scanners combine a relatively low cost with the advantage of the portability. The aim of this chapter is two-fold: first, a survey about the most recent 3D handheld scanners is presented. As second, a study about the possibility to employ the handheld scanners in the field of Cultural Heritage is conducted. In this investigation, a doorway of the Benedictin…
Peak Power Demand and Energy Consumption Reduction Strategies for Trains under Moving Block Signalling System
2013
Published version of an article in the journal: Mathematical Problems in Engineering. Also available from the publisher at: http://dx.doi.org/10.1155/2013/940936 Open Access In the moving block signalling (MBS) system where the tracking target point of the following train is moving forward with its leading train, overload of the substations occurs when a dense queue of trains starts (or restarts) in very close distance interval. This is the peak power demand problem. Several methods have been attempted in the literature to deal with this problem through changing train's operation strategies. However, most existing approaches reduce the service quality. In this paper, two novel approaches - …
E-mail, Facebook, and Mobile Phones as Essential Tools for Lower Secondary School Students’ Communication
2014
The process of communication in the contemporary world and classroom has changed due to the Internet becoming more popular as an important means of exchanging information among young people. The Internet has also influenced relations and modes of communication between students and teachers. In consequence, the social distance between teachers and students has shortened and their relations have become less strict and formal. The following study concerns teacher–student, student–student classroom practices in lower secondary school, and addresses the issue of students’ preferences in communication and teacher–student communication satisfaction. The participants were 16-year-olds from two vill…