A Log Logistic Survival Model Applied To Hypobaric Decompression Sickness
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Author | : Johnny Conkin |
Publisher | : |
Total Pages | : 26 |
Release | : 2001 |
Genre | : Decompression (Physiology) |
ISBN | : |
Decompression sickness (DCS) is a complex, multivariable problem. A mathematical description or model of the likelihood of DCS requires a large amount of quality research data, ideas on how to define a decompression dose using physical and physiological variables, and an appropriate analytical approach. It also requires a high-performance computer with specialized software. I have used published DCS data to develop my decompression doses, which are variants of equilibrium expressions for evolved gas.
Author | : National Aeronautics and Space Adm Nasa |
Publisher | : Independently Published |
Total Pages | : 26 |
Release | : 2018-09-26 |
Genre | : Science |
ISBN | : 9781724073884 |
Decompression sickness (DCS) is a complex, multivariable problem. A mathematical description or model of the likelihood of DCS requires a large amount of quality research data, ideas on how to define a decompression dose using physical and physiological variables, and an appropriate analytical approach. It also requires a high-performance computer with specialized software. I have used published DCS data to develop my decompression doses, which are variants of equilibrium expressions for evolved gas plus other explanatory variables. My analytical approach is survival analysis, where the time of DCS occurrence is modeled. My conclusions can be applied to simple hypobaric decompressions - ascents lasting from 5 to 30 minutes - and, after minutes to hours, to denitrogenation (prebreathing). They are also applicable to long or short exposures, and can be used whether the sufferer of DCS is at rest or exercising at altitude. Ultimately I would like my models to be applied to astronauts to reduce the risk of DCS during spacewalks, as well as to future spaceflight crews on the Moon and Mars. Conkin, Johnny Johnson Space Center NASA/TP-2001-210775, S-885, NAS 1.60:210775, JSC-CN-7170
Author | : Undersea and Hyperbaric Medical Society. Workshop |
Publisher | : |
Total Pages | : 186 |
Release | : 2002 |
Genre | : Decompression sickness |
ISBN | : |
Author | : Laura A. Thompson |
Publisher | : |
Total Pages | : 52 |
Release | : 2003 |
Genre | : Atmospheric pressure |
ISBN | : |
Author | : Debasis Kundu |
Publisher | : Academic Press |
Total Pages | : 188 |
Release | : 2017-06-29 |
Genre | : Mathematics |
ISBN | : 0081012403 |
Analysis of Step-Stress Models: Existing Results and Some Recent Developments describes, in detail, the step-stress models and related topics that have received significant attention in the last few years. Although two books, Bagdonavicius and Nikulin (2001) and Nelson (1990), on general accelerated life testing models are available, no specific book is available on step-stress models. Due to the importance of this particular topic, Balakrishnan (2009) provided an excellent review for exponential step-stress models. The scope of this book is much more, providing the inferential issues for different probability models, both from the frequentist and Bayesian points-of-view. - Explains the different distributions of the Cumulative Exposure Mode - Covers many different models used for step-stress analysis - Discusses Step-stress life testing under the competing or complementary risk model
Author | : Kewal K. Jain |
Publisher | : Springer |
Total Pages | : 660 |
Release | : 2016-11-25 |
Genre | : Medical |
ISBN | : 3319471406 |
This comprehensive volume captures the latest scientific evidence, technological advances, treatments and impact of biotechnology in hyperbaric oxygen therapy. Divided into three distinct sections, the book begins with basic aspects that include history, equipment, safety and diagnostic approaches; this is followed by clinical applications for hyperbaric oxygen therapy in various modalities; the last section provides an overview of hyperbaric medicine as a specialty with best practices from around the world. Integration of multidisciplinary approaches to complex disorders are also covered. Updated and significantly expanded from previous editions, Textbook of Hyperbaric Medicine, 6th Edition will continue to be the definitive guide to this burgeoning field for students, trainees, physicians and specialists.
Author | : American Statistical Association. Statistical Computing Section |
Publisher | : |
Total Pages | : 248 |
Release | : 1997 |
Genre | : Mathematical statistics |
ISBN | : |
Author | : Tom S. Neuman |
Publisher | : Elsevier Health Sciences |
Total Pages | : 637 |
Release | : 2008-06-05 |
Genre | : Medical |
ISBN | : 1416034064 |
Written by internationally recognized leaders in hyperbaric oxygen therapy (HBOT) research and practice, this exciting new book provides evidence-based, practical, useful information for anyone involved in HBOT. It outlines the physiologic principles that constitute the basis for understanding the clinical implications for treatment and describes recent advances and current research, along with new approaches to therapy. This book is an essential tool for anyone who cares for patients with difficult-to-heal wounds, wounds from radiation therapy, carbon monoxide poisoning, and more. Provides comprehensive coverage of pathophysiology and clinically relevant information so you can master the specialty. Covers the relevance of HBOT in caring for diverse populations including critical care patients, infants and pediatric patients, and divers. Features a section on the technical aspects of HBOT to provide insight into the technology and physics regarding HBO chambers. Presents evidence to support the effectiveness of HBOT as well as the possible side effects. Describes situations where HBOT would be effective through indication-specific chapters on chronic wounds, radiation and crush injuries, decompression sickness, and more.
Author | : Dennis R. Jenkins |
Publisher | : Government Printing Office |
Total Pages | : 540 |
Release | : 2012-08-27 |
Genre | : Antiques & Collectibles |
ISBN | : 9780160901102 |
"Since its earliest days, flight has been about pushing the limits of technology and, in many cases, pushing the limits of human endurance. The human body can be the limiting factor in the design of aircraft and spacecraft. Humans cannot survive unaided at high altitudes. There have been a number of books written on the subject of spacesuits, but the literature on the high-altitude pressure suits is lacking. This volume provides a high-level summary of the technological development and operational use of partial- and full-pressure suits, from the earliest models to the current high altitude, full-pressure suits used for modern aviation, as well as those that were used for launch and entry on the Space Shuttle. The goal of this work is to provide a resource on the technology for suits designed to keep humans alive at the edge of space."--NTRS Web site.
Author | : |
Publisher | : |
Total Pages | : 444 |
Release | : 1977 |
Genre | : Aeronautics, Military |
ISBN | : |