Search results for "mobiles"
showing 10 items of 25 documents
From cars to bikes : the effect of an intervention providing access to different bike types : a randomized controlled trial
2019
IntroductionWe aimed to investigate whether providing parents with children in kindergarten with access to different bicycle types could influence (i) travel behavior and cycling amount, and (ii) intrinsic motivation for cycling and psychological constructs related to car use.MethodsA randomized, controlled trial was conducted in Southern Norway from September 2017 to June 2018. In total 36 parents were recruited and randomly drawn into an intervention (n = 18) or control group (n = 18). The intervention group was in random order equipped with an e-bike with trailer (n = 6), a cargo (longtail) bike (n = 6) and a traditional bike with trailer (n = 6).ResultsAt follow-up, more participants fr…
Air pollution and childhood leukaemia: a nationwide case-control study in Italy
2013
Objectives Leukaemia is the most common cancer in children, but its aetiology is still poorly understood. We tested the hypothesis that traffic-related air pollution is associated with paediatric leukaemia because of chronic exposure to several potential carcinogens. Methods The Italian SETIL study (Study on the aetiology of lymphohematopoietic malignancies in children) was conducted in 14 Italian regions. All incident cases of leukaemia in children aged ≤10 years from these regions (period 1998–2001) were eligible for enrolment. Two controls per case, matched on birth date, gender and region of residence were randomly selected from the local population registries. Exposure assessment at bi…
Road traffic noise around schools: a risk for pupil's performance?
1993
Noise levels around educational centres can negatively affect the performance of both teachers and pupils. Two public schools in Valencia, Spain, were selected for study. One of these schools was exposed to excessively high road traffic noise levels while the other was located in a relatively quiet area. The socioeconomic level of those attending the schools was very similar. A set of external and internal noise measurements were carried out, along with two different attention tests among the children. Test results were consistently better (both for tests and for children from different classrooms in each school) in the quiet school. Exposure to high traffic noise levels in the noisy school…
PRICE CONVERGENCE IN THE EUROPEAN CAR MARKET
2008
International audience; This paper examines price convergence in the European Union car market over the period 1995-2005. We find that there is a clear evidence of price convergence among the EU15 countries, but not before 1999. Moreover, countries of the Economic and Monetary Union (EMU) started convergence previously to the EU15 as a whole. Finally, exchange rate changes have significantly contributed to price dispersion over time across countries. The results provide significant evidence that trade liberalization and the EMU have enhanced the process of regional integration in the European automobile industry, even though there is room for further measures to promote integration.
Occupational health disparities among U.S. long-haul truck drivers: the influence of work organization and sleep on cardiovascular and metabolic dise…
2018
Objective The organization of work has undergone vast transformations over the past four decades in the United States and has had profound impacts on worker health and wellbeing. The profession of commercial truck driving is one of the best examples. Particularly for long-haul truck drivers, changes in work organization have led to disproportionately poor physiological, psychological, and sleep health outcomes. Methods The present study examined disparities in cardiometabolic disease risk among long-haul truck drivers and the general population, and the influence of work organization and sleep in generating these outcomes. Researchers collected survey data from 260 drivers, and blood assay …
Discovering human mobility from mobile data : probabilistic models and learning algorithms
2020
Smartphone usage data can be used to study human indoor and outdoor mobility. In our work, we investigate both aspects in proposing machine learning-based algorithms adapted to the different information sources that can be collected.In terms of outdoor mobility, we use the collected GPS coordinate data to discover the daily mobility patterns of the users. To this end, we propose an automatic clustering algorithm using the Dirichlet process Gaussian mixture model (DPGMM) so as to cluster the daily GPS trajectories. This clustering method is based on estimating probability densities of the trajectories, which alleviate the problems caused by the data noise.By contrast, we utilize the collecte…
Presse de gauche, autodromes et courses de vitesse. L'Humanité et Le Populaire aux prises avec l'essor des sports automobiles (1920-1939)
2022
IV. Sous le signe de la détente ? Popularisation des autodromes et des sports mécaniques (1934-1939) V. Conclusion, perspectives Résumé : La presse socialiste et communiste est mobilisée ici comme première entrée pour la définition d'un discours « de gauche » sur les autodromes et les courses automobiles. Les archives du Populaire et de L'Humanité sont interrogées et comparées pour la période 1920-1939, à travers des méthodologies visant à croiser les discours « ordinaires » sur ces objets et ceux qui se déploient à l'occasion de « grands événements » (Grand prix de l'Automobile Club de France, 24 heures du Mans). Au fil du temps, et d'un quotidien à l'autre, l'attention accordée au sport a…
Automašīnās iebūvēto GPS īpatnības
2015
Automašīnās iebūvēto borta datoru svarīga sastāvdaļa ir GPS, kas atvieglo automašīnas vadītāja ikdienu. Automašīnu īpašnieki nav informēti par šo sistēmu ražotājiem, par to, kādas operētājsistēmas tās darbina, kā arī par to cik drošas ir šīs iekārtas un vai tās ir iespējams pielāgot savām vajadzībām. Darba mērķis ir izpētīt dažādās automašīnu markās iebūvēto GPS īpatnības, tai skaitā, operētājsistēmas uz kurām šīs iekārtas darbojas, iespējas pielāgot šīs iekārtas savām vajadzībām, kā arī šo iekārtu drošību. Darba izstrādes gaitā tika iegūtas jaunas zināšana par automašīnās izmantotajām GPS, paplašinātas zināšanas par operētājsistēmām, to drošību, kā arī praktiski veikti eksperimenti ar auto…
Maximum exposure levels for xylene, formaldehyde and acetaldehyde in cars.
2004
Although millions of individuals are exposed to emissions from articles inside cars, relatively little has been published about possible adverse health effects and about exposure levels that can be considered safe or "acceptable". Xylene, formaldehyde and acetaldehyde represent typical examples of relevant volatile organic substances (VOC) released from articles inside cars. Recently, a concept for derivation of maximum exposure levels for volatile organic substances in cars has been published. In the present study we applied this concept to derive maximum exposure levels for xylene, formaldehyde and acetaldehyde and compared the resulting concentrations to exposure levels usually found ins…