Search results for "road"
showing 10 items of 851 documents
Un estudio piloto sobre el efecto diferencial de la fatiga por conducción en personas mayores
2011
Hay indicios de que la fatiga, uno de los principales efectos de la conducción prolongada, es más notable en mayores. El presente artículo recoge un estudio sobre el efecto de la conducción prolongada utilizando un simulador, en un grupo de sujetos mayores de 55 años. Los sujetos fueron evaluados médica y psicológicamente antes y después de la prueba de conducción. Se aplicaron las pruebas médicas de tensión arterial, pulso y saturación de oxígeno en sangre y como prueba psicológica, el Driver-Test. Resultados preliminares indican que existe una disminución del rendimiento después de conducir, afectando especialmente a la capacidad de toma de decisiones. Some evidences show that fatigue, th…
Exploiting Data Analytics and Deep Learning Systems to Support Pavement Maintenance Decisions
2021
Road networks are critical infrastructures within any region and it is imperative to maintain their conditions for safe and effective movement of goods and services. Road Management, therefore, plays a key role to ensure consistent efficient operation. However, significant resources are required to perform necessary maintenance activities to achieve and maintain high levels of service. Pavement maintenance can typically be very expensive and decisions are needed concerning planning and prioritizing interventions. Data are key towards enabling adequate maintenance planning but in many instances, there is limited available information especially in small or under-resourced urban road authorit…
A systematic review to determine reliability and usefulness of the field-based test batteries for the assessment of physical fitness in adolescents -…
2015
The aim of the present review is to investigate the main field-based tests, used alone or included in sport or fitness batteries, for the assessment of health- and skill-related physical fitness components in adolescents. Different scientific databases were searched through using the selected key words related to physical fitness and its components for adolescence. The search focused on original articles and reviews/meta-analyses using valid, reproducible and feasible tests that fit within the school environment. A total of 100 scientific manuscripts were included in the qualitative synthesis. The present systematic review pointed out 5 fitness tests that well adapt to the evaluation of the…
The Effect of the Perceived Utility of a Management Control System with a Broad Scope on the Use of Food Waste Information and on Financial and Non-F…
2020
The purpose of this study is to analyse the effect of the perceived utility of a management control system with a broad scope on the use of food waste information and on financial and non-financial performances in restaurants. To collect data, a questionnaire was administered in Brazilian restaurants. Data from 206 restaurants were analysed with structural equation modelling, which was performed with SmartPLS software. The results reveal that a management control system of broad scope, which includes non-financial information, is oriented towards the future, and contains an external and long-term focus, assists in the use of information on food waste. In addition, the use of information abo…
A methodological approach exploiting modern techniques for forest road network planning
2016
A well-developed road network allows all forest activities, including wood harvesting, firefighting and recreational activities. However, forest road construction and maintenance involve economic and environmental costs. For these reasons, forest road network planning is a fundamental phase of forest management, maximising the benefits and reducing costs and impacts. Thanks to modern technologies in data collection both for terrestrial and forest characteristics, new methods and tools have been developed to improve and facilitate road planning. The aim of this study was the development of a Decision Support System for helping managers during forest road network planning, exploiting Multi-Cr…
Free-volume Study in GeS2-Ga2S3-CsCl Chalcohalide Glasses Using Positron Annihilation Technique
2015
Abstract Positron annihilation lifetime spectroscopy combined with Doppler broadening of annihilation radiation was applied to study free-volume entities in Ge-Ga-S glasses having different amount of CsCl additives. It is shown that the structural changes caused by CsCl additives can be adequately described by positron trapping modes determined within two-state model. The results testify in a favor of rather unchanged nature of corresponding free-volume voids responsible for positron trapping in the studied glasses, when mainly concentration of these traps is a subject to most significant changes with composition.
The societal contexts for sound and music computing: Research, education, industry, and socio-culture
2007
Abstract The paper addresses the various contexts that determine the societal framework for research in the field of sound and music computing. Four of these contexts are identified, namely, the research context, the educational context, the industrial context and the socio-cultural context. For each context, the major trends are analysed and summarized as short statements, thus providing a background in which the state-of-the-art and the challenges of sound and music research can be situated.
Kierunki rozwoju sieci autostrad i dróg ekspresowych w Polsce
2018
W artykule przedstawiono kierunki rozwoju sieci autostrad i dróg ekspresowych w Polsce w latach 1990-2018. Sieć dróg szybkiego ruchu w kraju jest intensywnie rozbudowywana. Płatne dla pojazdów samochodowych autostrady są uzupełniane siecią bezpłatnych dróg ekspresowych, głównie dwujezdniowych. Program budowy dróg ekspresowych na lata 2014-2023 jest konsekwentnie realizowany. Zbudowano główne autostrady kraju A-1, A-2 i A-4. W trakcie rozbudowy są drogi ekspresowe S-3, S-5, S-6, S-7, S-8, S17, S-19 i S-61. Aktualne inwestycje drogowe koncentrują się na budowie brakujących odcinków dróg ekspresowych i obwodnic miast. Opracowanie podejmuje również próbę racjonalizacji kolejności podejmowanych …
HEALTH COVER, THE CASE OF MARTIN AND CAROLINA IN AUSTRALIA
2014
This research examines, from a qualitative perspective, some public opinion related to issues associated with the management of a tensed situation. In that process, it identifies some of the subtle differences in the Anglo-Latino cultural expectations. Martin, an Argentine tourist, contracted the Gullien-Barre syndrome in Australia, while enjoying his honeymoon vacation on a Tasmanian island with his partner Carolina. With the passing of days, Martin lost his mobility and was finally hospitalized in emergency. Doctors induced Martin into a coma temporarily because his muscles were paralyzed by the action of the virus. Health costs were more expensive than the family could absorb in Australi…
The closer¿ the unsafer: may the lack of safe distance be a silent contributor to the burden of traffic crashes in Spain?
2020
Not keeping an adequate safe distance is one of the elements that are directly related to traffic accidents. The main objective of this research was to identify the aspects that modulate the safe distance-accidents relation. Specifically, the frequency and reasons why drivers do not keep the safe distance, the perception of drivers regarding the probability of penalty, the penalties imposed and their severity, and the drivers’ opinion on the effectiveness of such penalties in order to change this behavior. A questionnaire was administrated to a sample of 1,100 Spanish drivers having any kind of driving license. The results showed that only the 5,6% of drivers always or sometimes do not keep…