Search results for " materia"
showing 10 items of 18071 documents
Study on the Influence of Economic and Social Factors on the Financing of National Defense
2020
In the Romanian literature and current research, the financing of national defense is a less debated topic. Most studies are conducted mainly for developed countries, which also have the most advanced military systems and focus only on the correlation between military spending and the economy. The objective of the paper is to investigate the correlation between the evolution of military spending in Romania during 1919-2012 on the one hand, and economic, political and social factors, on the other. The empirical study performed used the linear regression model, estimated by the least squares method (OLS), using the statistical software EViews 10. The results of the study showed that the level…
L'energia e l'aspetto organizzativo degli interessi pubblici: modelli cooperativi e dimensioni di complessità
2010
L'energia costituisce il settore economico che partecipa in misura rilevante all'instaurazione ed al funzionamento del mercato unionale, aperto e concorrenziale, anche in funzione della politica di coesione economica e territoriale. L'energia è, altresì da considerare quale merce, soggetta alla prima delle libertà fondamentali del Trattato CE. I prodotti ed i servizi energetici costituiscono da tempo il terreno giuridico d'intervento dell'azione comunitaria per la promozione della concorrenza e la garanzia di un servizio al miglior prezzo ed alle migliori condizioni. Sotto la spinta comunitaria, la disciplina di tale settore economico mantiene sullo sfondo l'abbandono graduale del modello m…
Increasing the flexural capacity of RC beams using steel angles and pre-tensioned stainless steel ribbons
2016
This article presents an experimental programme on reinforced concrete beams retrofitted with steel angles and pre-stressed stainless steel ribbons to increase their flexural strength and ductility. Two different configurations of the steel ribbon were designed, and two companion specimens for each type considered were subjected to a four-point bending test to facilitate a direct comparison in the analysis of the effectiveness of the retrofitting technique. The influence of longitudinal steel angles and transverse stainless steel ribbons is analysed, and the concrete confinement due to stainless steel ribbons examined. The strengthened beams show remarkable increments in flexural strength a…
The use of pumice lightweight concrete for masonry applications
2011
In the last two decades, the use of pumice as lightweight aggregate for concrete in structural applications has been the object of different studies. The aim was to find out if pumice can be an alternative to ordinary lightweight aggregate. The present paper is framed in this context. Here, a study is presented showing the use of pumice for making lightweight concrete units for masonry members. Through the paper, the formulation of a mix design for lightweight concrete is proposed. Then the obtained mechanical characteristics of the masonry units are discussed and compared to the code requirements. Reinforced bearing masonry walls, made with the concrete masonry units in question, were made…
Demo 26. Difracción de electrones
2013
Objetivo: Visualizar los anillos de interferencia producidos por un haz de electrones al atravesar un blanco de grafito. Dependencia del tamaño de los anillos con el potencial acelerador.
Performing Sound of the Past: Remix in Electronic Dance Music Culture
2014
The term remix, defined as an activity of taking data from pre-existing materials to combine them into new forms according to personal taste, relates to various elements and areas of contemporary culture. Whichever model used, consideration of the remix depends on recognition of pre-existing cultural codes. Therefore, as a second layer, the remix relies on the authority of the original and it functions at the meta-level. The audience may see a trace of history with the pre-existing object and the meaning creates in the viewer(s), reader(s), listener(s) or, in the contemporary world of DJs and popular electronic dance music culture – in dancer(s). With the aim of specifying modes of creating…
Scientific writing for impact factor journals
2013
EASARCICAPLivre dispo. dans :hal-00832739, version 1; Publish or Perish. This old adage illustrates the importance of scientific communication; essential to research, it also represents a strategic sector for each country’s competitiveness. An often-neglected topic, scientific communication is of vital importance, with new information technologies accelerating and profoundly changing how knowledge is disseminated. The necessity of optimally disseminating experts’ findings has also become crucial to researchers, institutes and universities alike, which has prompted the recent advent of Impact Factors for the evaluation and financing of research, the goal being for scientific knowledge to be …
Sport Coaches Burnout as a Threat to Professional Success, Mental Health and Well-Being
2021
The article explores motivational and personality predictors of burnout syndrome in sports coaches. The study involved 183 sports coaches of 20–63 years old (86.9% women; M=41.34±10.56 years), with professional experience for 13.83±9.98 years. Three components of professional burnout ― Emotional exhaustion, Depersonification and Reduction of professional achievements ― were measured with the adapted Maslach professional burnout inventory (Vodopyanova, et al 2008). Motivational aspects were measured with the adapted Ryan and Connell Professional Motivation inventory (Osin et al, 2017). Personal resources ― stress resistance, authenticity and coping strategies ― were measured with the adapted…
Cybersecurity Attacks on Software Logic and Error Handling Within AIS Implementations: A Systematic Testing of Resilience
2022
To increase situational awareness of maritime vessels and other entities and to enable their exchange of various information, the International Maritime Organization mandated the use of the Automatic Identification System (AIS) in 2004. The AIS is a self-reporting system that uses the VHF radio link. However, any radio-based self-reporting system is prone to forgery, especially in situations where authentication of the message is not designed into the architecture. As AIS was designed in the 1990s when cyberattacks were in their infancy, it does not implement authentication or encryption; thus, it can be seen as fundamentally vulnerable against modern-day cyberattacks. This paper demonstrat…