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This paper describes the architecture and implementation of an autonomous passenger vehicle designed to navigate using locally perceived information in preference to potentially inaccurate or incomplete map data. The vehicle architecture was designed to handle the original DARPA Urban Challenge requirements of perceiving and navigating a road network with(More)
OBJECTIVE To assess the validity of the CAGE (cut down, annoyed, guilty feelings, eye-opener) questionnaire and the Michigan Alcoholism Screening Test (MAST) in distinguishing between elderly patients with and without alcohol abuse or dependence disorders. DESIGN A cross-sectional study, in which patients were interviewed with a "gold standard," the(More)
This technical report describes Team MIT's approach to the DARPA Urban Challenge. We have developed a novel strategy for using many inexpensive sensors, mounted on the vehicle periphery, and calibrated with a new cross­modal calibration technique. Lidar, camera, and radar data streams are processed using an innovative, locally smooth state representation(More)
The objectives of this study were to examine the agreement between 5 ergonomic risk assessment methods calculated on the basis of quantitative exposure measures and to examine the ability of the methods to correctly classify 4 at risk jobs. Surface electromyography and electrogoniometry were used to record the physical exposures of 87 sawmill workers(More)
Written case simulations are often used to investigate physicians' decision making and clinical competence. Their use rests on the assumption that physicians' responses to written simulations closely agree with their responses to actual clinical encounters, yet this assumption of criterion validity has received little attention. To determine the ability of(More)
Multiple ergonomic risk assessment methods of unique structure are currently being used to direct industrial prevention initiatives focused on musculoskeletal injuries. In this study, the physical exposures required to perform an at-risk sawmill occupation were collected from 29 subjects via quantified means (surface electromyography and electrogoniometery)(More)
PURPOSE To summarize currently existing research regarding the assessment of functional capacity in low back injured workers. METHOD Literature review. RESULTS Methods of functional capacity evaluation are described and critical components of an examination of functional capacity identified in relationship to federal occupational categorization and(More)
PURPOSE To validate three alcoholism screening questionnaires in elderly male veterans. PATIENTS Participants were 120 male veterans aged 65 years or older. METHODS In this cross-sectional study, consecutive patients in the outpatient general medical practice at the Omaha VA Medical Center were interviewed with the alcohol module of the Revised(More)
This paper reviews the current state of knowledge regarding the tools used in evaluating the workplace and worker in hopes of preventing low-back injury. Information regarding the current state of expenditure and trends toward ergonomic intervention are discussed. Acknowledgment is made of the increasing shift of responsibility from Compensation Boards to(More)
This paper describes a case study of a neighborhood pub in British Columbia, Canada. This case study is an examination of three common pub occupations-bartending, waitressing and cooking (n = 17). The aims of this study are to determine the biomechanical loads of job tasks identified as physically demanding for the three occupations analyzed, to assess the(More)