Switched reluctance motor drive system has greatly practical value in electric vehicle applications. For the characteristics of switched reluctance motor and electric vehicle application requirements, how to reduce the torque ripple effectively and ensure its average output torque, all these become a hot spot of research. Based on this, first of all, the nonlinear model of switched reluctance m...

OBJECTIVE To investigate differences in the incidence of motor vehicle crashes (MVCs) and violations among drivers with multiple sclerosis (MS) when cognitive impairment is present. DESIGN Archival evaluation of Department of Motor Vehicles (DMV) records. SETTING Medical rehabilitation research organization. PARTICIPANTS Community-dwelling drivers, 27 subjects with documented MS (14 MS wi...

In this study, a series of instances of children injured by a motor vehicle set in motion by an unsupervised child are reviewed. During a 24-month period, nine such children were identified through a multihospital and coroner's office monitoring system in a single urban county. Injuries ranged from multiple abrasions and contusions to serious leg and head injuries. Three children died. The typi...

The reduction of the rate of death attributable to motor-vehicle crashes in the United States represents the successful public health response to a great technologic advance of the 20th century-the motorization of America. Six times as many people drive today as in 1925, and the number of motor vehicles in the country has increased 11-fold since then to approximately 215 million. The number of ...

Emergency medical service (EMS) response combined with the increasing availability and usage of advanced automatic collision notification (AACN) systems in motor vehicles are important components in the effort to reduce fatalities and serious injuries suffered in motor vehicle crashes. This research note examines fatal motor vehicle crash locations in relation to the coverage area of helicopter...

Individuals using wheeled mobility devices (WMDs) often use them as motor vehicle seats during transportation. Wheelchair occupant restraint systems (WORSs), consisting of upper torso and pelvic restraints, are usually mounted to the structure of transit vehicles to secure individuals within their wheelchair seats. This preliminary study attempts to evaluate the use and satisfaction of currentl...

UNMIX and Positive Matrix Factorization (PMF) solutions to the Chemical Mass Balance (CMB) equations were applied to chemically speciated PM2.5 measurements from 23 sites in California's San Joaquin Valley to estimate source contributions. Six and seven factors were determined by UNMIX for the low_PM2.5 period (February to October) and high_PM2.5 period (November to January), respectively. PMF ...

To address the issue of safely accessing and securing wheeled mobility devices in motor vehicles, more information characterizing current-production devices was needed. In a recent effort, frame characteristics of wheeled mobility devices were defined and a database developed for recording characteristics relevant to access and securement. A representative number of devices have been surveyed t...