Search results for "list"
showing 10 items of 4869 documents
Teenage cyclist - Pick up crash by multibody simulation; HIC evaluation and comparison with previous results
2016
The study of the injury caused by Pick-up vehicle-teenage cyclist crash is presented in this paper. The vehicle has high frontal part, in order to compare the results with those obtained previously in the sedan and SUV - teenage cyclist crash. No variation is executed on the model of the teenage cyclist and the bike. Three different positions are analyzed: front, rear and lateral position. The injury on the cyclist head is examined by HIC criterion, in the way indicated in the rules. Correlation HIC – AIS is used to calculate the lethality of the injuries. A comparison is made between the results of the simulations for Pick up, SUV and sedan, concluding that the injury of the head is more d…
Biomechanics Parameters in the Vehicle-Cyclist Crash with Accident Analysis in Palermo
2014
The vehicle-bicyclist impact is studied in this paper. After analysis of the accidents in Palermo in the last years, the multibody simulation of the crash is executed by making use of Visual Nastran. Dummy, car and bicycle are those used in previous works. The attention is on a teenage cyclist, because the data on this argument are found in literature with difficulty. The impact is simulated at four different speeds until 50 km/h, with three different positions of the cyclist relative to the vehicle: frontal, side and rear. In particular the injury of the head is analyzed using the parameter HIC and the chest injury is analyzed by 3 ms criterion; the likelihood AIS 4+ is calculated, conclud…
Biomechanics Parameters in Teenage Cyclist – SUV Accident and Comparison with the Pedestrian
2015
The study of the injury caused by the vehicle-teenage cyclist crash is presented in this paper. The vehicle is a SUV, with high frontal part, in order to compare the results with those obtained previously in the sedan- teenage cyclist crash and begin a study of the influence of the frontal shape of the vehicle. No variation is executed on the model of the teenage cyclist and the bike. Three different positions are analyzed: front, rear and lateral position. The injury on the cyclist head is examined by HIC criterion, in the way indicated in the rules. Correlation HIC – AIS is used to calculate the lethality of the injuries. The principal conclusion is done that the injury of the head is mor…
A New Theoretical Approach on Teenage Cyclist-Vehicle Crash
2016
Data obtained in teenage cyclist impact against three vehicles (sedan, SUV and Pick Up), tested in previous works, are analyzed to verify the theoretical results by the coupling of momentum conservation principle and energy conservation principle. The speed of vehicle and thorax are compared with theoretical ones, obtaining an excellent agreement. Following the results found in the literature, particular emphasis is done on teenager cyclist thorax and head speeds, indicating that the cyclist speed can be theoretically until 1,41 times the impact speed, while greater values, until 2, are obtained in the simulations. A small slowing of the vehicle is found theoretically and in the simulations…
Perusopetuslakiuudistus ja osallistuva rehtori : rehtorit osana tehostetun tuen prosessia
2016
Tutkimuksen tarkoituksena oli selvittää, millä tavoin rehtorit ovat osallisena tehostetun tuen prosessissa. Rehtoreilta kysyttiin olivatko he osallistuneet pedagogisen arvion ja oppimissuunnitelman laatimiseen. Tässä tutkimuksessa selvitettiin myös sitä, eroavatko ala-, ylä- ja yhtenäiskoulujen rehtoreiden näkemykset toisistaan vastuiden ja rehtorin oman osallistumisen näkökulmasta tehostetun tuen prosessissa. Vuonna 2012 kerätty tutkimusaineisto saatiin käyttöön Opetus- ja kulttuuriministeriön rahoittamasta Jonna Pulkkisen ja Markku Jahnukaisen (2015) tutkimuksesta. Aineisto koostuu 335 rehtorin vastauksista 173 kunnasta. Tutkimuksen tutkimusmenetelmä on määrällinen. Aineisto on analysoitu…