Robert F. Raleigh

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OBJECTIVES To evaluate the relationship between performance-based risk factors and subsequent at-fault motor vehicle collision (MVC) involvement in a cohort of older drivers. DESIGN Prospective cohort study. SETTING Motor Vehicle Administration (MVA) field sites in Maryland. PARTICIPANTS Of the 4,173 older drivers invited to participate in the study,(More)
Habitat models are designed for a wide variety of planning applications where habitat information is an important consideration in the decision process. However, it is impossible to develop a model that performs equally well in all situations. Assistance from users and researchers is an important part of the model improvement process. Each model is(More)
PREFACE The Habitat Suitability Index (HSI) models presented in this publication aid in identifying important habitat variables. Facts, ideas, and concepts obtained from the research literature and expert reviews are synthesized and presented in a format that can be used for impact assessment. The models are hypotheses of species-habitat relationships, and(More)
PREFACE The habi tat use i nformat i on and Habi tat Sui tabil ity Index (HSI) models presented in this document are an aid for impact assessment and habitat management activities. Literature concerning a species' habitat requirements and preferences is reviewed and then synthesized into subjective HSI models, which are scaled to produce an index between 0(More)
This is one of the first reports to be published in the new "Biological Report" series. This technical report series, published by the Research and Development branch of the U.S. Fish and Wildlife Service, replaces the "FWS /OBS" series published from 1976 to September 1984. The Biological Report series is designed for the rapid publication of reports with(More)
The Biological Services Program was established within the U.S. Fis h and Wild life Service to supply scientific information and methodolog ies on key environmental issues that impact fish and wi l dli fe reso urces and their supporting ecosystems. The mission of the program is as follows: • To strengthen the Fish and W i l dl i fe Service i n its role as a(More)
PREFACE The habitat use information and Habitat Suitability Index (HSI) models presented in this document are an aid for impact assessment and habitat management activities. Literature concerning a species' habitat requirements and preferences is reviewed and then synthesized into subjective HSI models, which are scaled to produce an index between 0(More)
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