The study is based on recreation use data collected at seven Corps of Engineers reservoirs in California. The two basic objectives of the study were to evaluate and attempt to isolate factors influencing recreation use, and develop recreation use prediction models. The technique used is multiple linear regression. The study generalizes the 'Clawson-Hotelling' prediction model for estimating demand at selected reservoirs in California using distance from the site as a proxy for price. Alternative prediction models employ distance zones about sites or county of origin of users of each site, and results from the alternative models are compared. The various factors or variables examined included socio-economic variables relating to income, age, education, urbanization, and population of the zones (counties) and certain site specific variables to differentiate either quality and/or quantity of the recreation experience at reservoirs. Findings of the study relate only to recreation use prediction at reservoir sites in California. However, these findings will provide the bases for development of more sophisticated prediction models having wider application and also for further studies in the determination of the economic value of water-based recreation. (Author).

A solid understanding of the mechanisms and pathophysiology that underlie vascular disease is essential for the clinical evaluation and optimal management options for millions of patients with vascular disease. It is important that students, residents and practicing clinicians have a solid understanding of how basic science is translated into best clinical practice when managing patients with vascular disease. The thirteen chapters in this eBook have been selected from the contents of two Sections (Basic Science, Pathophysiology) in "Rutherford's Vascular Surgery 8th" edition. It provides an up-to-date overview of the current scientific knowledge regarding the mechanisms and pathogenesis of vascular disease." Rutherford's Vascular Surgery" is the most acclaimed and authoritative reference work in the field, and it is hoped that this eBook, utilizing the content from the latest 8th edition of this classic reference work, will provide all clinicians involved in the management of vascular disease with a unique and exciting e-format to access the most current information written by internationally recognized experts, on the basic science associated with vascular disease. This eBook will enable students, trainees and practitioners to access the content by scrolling through their computer, tablet or smart phone.

The management of arterial diseases of the upper and lower extremities is a key aspect of the vascular surgeon's practice and also that of cardiologists, radiologists and other vascular health professionals who treat patients with extremity arterial diseases. The eighteen chapters in this eBook have been selected from the contents of two Sections (Upper Extremity Arterial Disease and Lower Extremity Arterial Disease) in "Rutherford's Vascular Surgery 8th" edition, as well as a chapter on Wound Care. These chapters offer clear, definitive guidance on the optimal medical, surgical and endovascular approaches for managing patients with peripheral arterial disease.. This content is supplemented with the inclusion of 8 real time surgical video clips capturing key elements of open and endovascular procedures. " Rutherford's Vascular Surgery" is the most acclaimed and authoritative reference work in the field, and this eBook, utilizing the content from the latest 8th edition of this classic reference work, will provide vascular surgeons, cardiologists, interventional radiologists and other vascular specialists with a unique and exciting e-format to access the most current information written by internationally recognized experts aboutthe medical and surgical management of arterial disorders in the extremities This eBook will enable practitioners and trainees to access the content by scrolling through their computer, tablet or smart phone.

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Analytical framework; Demand relationships; Production coeficients andrestaints; Crop response functions.