Download or read book The Effects of High Intensity Noise on Human Performance written by C. Stanley Harris and published by . This book was released on 1968 with total page 30 pages. Available in PDF, EPUB and Kindle. Book excerpt: Four experiments were conducted on the effects of broadband, high intensity noise on human performance. In two experiments the subjects' performance was measured on a Discrimination Task, based primarily upon visual discrimination and short term memory, and in the other two experiments performance was measured on a Hand-Tool Dexterity Test. Four different noise exposure conditions were used in each experiment: control (70 dB), 120 dB, 130 dB, and 140 dB (re 0.0002 dyne/sq cm). In one experiment using the Discrimination Task, the subjects wore earplugs, and in the other, subjects wore earplugs and an earmuff with one earcup to produce an asymmetrical noise exposure at the ears. These two types of ear protectors were worn also by the subjects in the two experiments using the Hand-Tool Dexterity Task. Decrements on the Discrimination Task were obtained at the two highest noise intensities for the asymmetrical exposure and no decrements were obtained for any symmetrical exposure. With the Hand-Tool Dexterity Test, significant decrements were obtained at the noise levels of 130 dB and 140 dB with symmetrical exposure, and at 140 dB with the asymmetrical exposure. The difference in performance between the two groups was due to a different initial level of ability on the task rather than due to symmetrical versus asymmetrical exposure conditions. The results indicate that asymmetrical exposure had a greater detrimental effect on the Discrimination Task than the symmetrical exposure, while there was no differential effect on the Hand-Tool Dexterity Test. These results are discussed as a possible effect of the action of high intensity noise on the vestibular system.
Download or read book Occupational Noise Exposure written by Department of Health and Human Services and published by Createspace Independent Publishing Platform. This book was released on 2014-02-19 with total page 122 pages. Available in PDF, EPUB and Kindle. Book excerpt: In the Occupational Safety and Health Act of 1970, Congress declared that its purpose was to assure, so far as possible, safe and healthful working conditions for every working man and woman and to preserve our human resources. In this Act, the National Institute for Occupational Safety and Health (NIOSH) is charged with recommending occupational safety and health standards and describing exposure concentrations that are safe for various periods of employment-including but not limited to concentrations at which no worker will suffer diminished health, functional capacity, or life expectancy as a result of his or her work experience. By means of criteria documents, NIOSH communicates these recommended standards to regulatory agencies (including the Occupational Safety and Health Administration [OSHA]) and to others in the occupational safety and health community. Criteria documents provide the scientific basis for new occupational safety and health standards. These documents generally contain a critical review of the scientific and technical information available on the prevalence of hazards, the existence of safety and health risks, and the adequacy of control methods. In addition to transmitting these documents to the Department of Labor, NIOSH also distributes them to health professionals in academic institutions, industry, organized labor, public interest groups, and other government agencies. In 1972, NIOSH published Criteria for a Recommended Standard: Occupational Exposure to Noise, which provided the basis for a recommended standard to reduce the risk of developing permanent hearing loss as a result of occupational noise exposure [NIOSH 1972]. NIOSH has now evaluated the latest scientific information and has revised some of its previous recommendations. The 1998 recommendations go beyond attempting to conserve hearing by focusing on preventing occupational noise-induced hearing loss (NIHL). This criteria document reevaluates and reaffirms the recommended exposure limit (REL) for occupational noise exposure established by the National Institute for Occupational Safety and Health (NIOSH) in 1972. The REL is 85 decibels, A-weighted, as an 8-hr time-weighted average (85 dBA as an 8-hr TWA). Exposures at or above this level are hazardous. By incorporating the 4000-Hz audiometric frequency into the definition of hearing impairment in the risk assessment, NIOSH has found an 8% excess risk of developing occupational noise-induced hearing loss (NIHL) during a 40-year lifetime exposure at the 85-dBA REL. NIOSH has also found that scientific evidence supports the use of a 3-dB exchange rate for the calculation of TWA exposures to noise. The recommendations in this document go beyond attempts to conserve hearing by focusing on prevention of occupational NIHL. For workers whose noise exposures equal or exceed 85 dBA, NIOSH recommends a hearing loss prevention program (HLPP) that includes exposure assessment, engineering and administrative controls, proper use of hearing protectors, audiometric evaluation, education and motivation, recordkeeping, and program audits and evaluations. Audiometric evaluation is an important component of an HLPP. To provide early identification of workers with increasing hearing loss, NIOSH has revised the criterion for significant threshold shift to an increase of 15 dB in the hearing threshold level (HTL) at 500, 1000, 2000, 3000, 4000, or 6000 Hz in either ear, as determined by two consecutive tests. To permit timely intervention and prevent further hearing losses in workers whose HTLs have increased because of occupational noise exposure, NIOSH no longer recommends age correction on individual audiograms.
Download or read book The Effects of High Intensity Noise on Human Performance written by C. Stanley Harris and published by . This book was released on 1968 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Effects of Noise on Human Behavior written by John F. Corso and published by . This book was released on 1952 with total page 80 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Proceedings of the International Congress on Noise as a Public Health Problem written by United States. Environmental Protection Agency and published by . This book was released on 1974 with total page 836 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Effects of Noise on Man written by Karl D. Kryter and published by Elsevier. This book was released on 2013-09-03 with total page 654 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Effects of Noise on Man covers the techniques for the evaluation of environmental noise in terms of its effects on human. The book provides the fundamental definitions of sound, its measurement, and concepts of the basic functioning, and the attributes of the auditory system. The text also presents along with their experimental basis, procedures for estimating from physical measures of noise its effects on man's auditory system and speech communications. The last part of the book is devoted to man's nonauditory system responses and includes information about the effects of noise on work performance, sleep, feelings of pain, vision, and blood circulation.
Download or read book Proceedings written by and published by . This book was released on 1974 with total page 844 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book WADC Technical Report written by United States. Wright Air Development Division and published by . This book was released on 1953 with total page 1278 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1972 with total page 1056 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Effects of Noise on Marine Mammals written by William John Richardson and published by . This book was released on 1991 with total page 488 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Stress and Human Performance written by James E. Driskell and published by Psychology Press. This book was released on 2013-05-13 with total page 321 pages. Available in PDF, EPUB and Kindle. Book excerpt: The pace of life in our high technology world has quickened. Industries that do not become more efficient, often by requiring a faster production turnaround with less slack, are superseded. Because of this, workers face an environment in which they must perform under more time pressure and under greater task load, in which stress is more prevalent, and in which consequences of poor performance are more critical than ever before. The dominant, if unstated, psychoanalytic paradigm underlying much stress research over the past fifty years has led to an emphasis on coping and defense mechanisms and to a preoccupation with disordered behavior and illness. Accordingly, almost any book with "stress" in the title will invariably devote a considerable amount of pages to topics such as stress-related disorders, clinical interventions, stress and coping, psychopathology, illness, and health issues. This book presents basic and applied research that addresses the effects of acute stress on performance. There are a large number of applied settings that share the commonalities of high demand, high risk performance conditions, including aviation; military operations; nuclear, chemical, and other industrial settings; emergency medicine; mining; firefighting; and police work, as well as everyday settings in which individuals face stressors such as noise, time pressure, and high task load. This book focuses directly on the effects of acute stress-- defined as intense, novel stress of limited duration--on performance. The effects of stress on task performance, decision making, and team interaction are discussed, as well as the interventions used to overcome them.
Download or read book Recommendations and Reports written by Administrative Conference of the United States and published by . This book was released on 1992 with total page 956 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1972 with total page 558 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Auditory Cognition and Human Performance written by Carryl L. Baldwin and published by CRC Press. This book was released on 2016-04-21 with total page 335 pages. Available in PDF, EPUB and Kindle. Book excerpt: Hearing and understanding sound- auditory processing- greatly enriches everyday life and enhances our ability to perform many tasks essential to survival. The complex soundscape in which we live influences where we direct our attention, how we communicate with each other, and how we interact with technological systems. Auditory Cognition and Human
Download or read book Effects of Noise on People written by James David Miller and published by . This book was released on 1971 with total page 180 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Human Performance written by D. Roy Davies and published by Psychology Press. This book was released on 2013-10-23 with total page 417 pages. Available in PDF, EPUB and Kindle. Book excerpt: Human Performance provides the student and researcher with a comprehensive and accessible review of performance, in the real world and essential cognitive science theory. Four main sections cover both theoretical and practical issues: Section One outlines the perspectives on performance offered by contemporary cognitive science, including information processing and neuroscience perspectives. Section Two presents a multi-level view of the performer as biological organism, information-processor and intentional agent. It reviews the development of the cognitive theory of performance through experimental studies and also looks at practical issues such as human error. Section Three reviews the impact of stress factors such as noise, fatigue and illness on performance. Section Four assesses individual and group differences in performance with accounts of ability, personality and aging.
Download or read book The Environmental Psychology of Prisons and Jails written by Richard E. Wener and published by Cambridge University Press. This book was released on 2012-06-18 with total page 315 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book distils thirty years of research on the impacts of jail and prison environments. The research program began with evaluations of new jails that were created by the US Bureau of Prisons, which had a novel design intended to provide a non-traditional and safe environment for pre-trial inmates and documented the stunning success of these jails in reducing tension and violence. This book uses assessments of this new model as a basis for considering the nature of environment and behavior in correctional settings and more broadly in all human settings. It provides a critical review of research on jail environments and of specific issues critical to the way they are experienced and places them in historical and theoretical context. It presents a contextual model for the way environment influences the chance of violence.
