The Design and Evaluation of an Artificial Ear PDF Download

Author: Harry Doyle Record
Publisher:
ISBN:
Category : Audiometry
Languages : en
Pages : 136

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Book Description

Author: Harry L. Record
Publisher:
ISBN:
Category :
Languages : en
Pages : 77

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Book Description
A wideband artificial ear for the calibration of supraaural audiometric earphones was designed and constructed. The device consisted of three acoustically coupled cavities, and was designed to possess the acoustic impedance of an average human ear as seen by a standard supraaural earphone. An acoustic impedance measuring device was developed to aid in the evaluation of this artificial ear. Plots of experimentally determined acoustic impedance of this and other artificial ears are presented and discussed. Comparison of the experimentally determined acoustic impedance of the subject artificial ear with design values showed general agreement. It was concluded that lumped parameter representation of acoustic impedances, and the ability to measure acoustic impedance accurately and rapidly, are valuable tools for the development of complex acoustic systems. (Author).

Author: Francoise Firmin
Publisher: Thieme
ISBN: 1638534853
Category : Medical
Languages : en
Pages : 601

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Book Description
FIVE STARS from Doody's Star Ratings™ This book details the surgical techniques of Dr. Francoise Firmin, a recognized thought leader in auricular surgery. It contains her "trade secrets" that have been distilled over many years of practice and is abundantly illustrated with over 1000 colour photographs and drawings. The book includes operative and lecture video plus an eBook. This practical, authoritative book will be an essential purchase to all surgeons who operate on the ear.

Author:
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 688

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Book Description
Lists citations with abstracts for aerospace related reports obtained from world wide sources and announces documents that have recently been entered into the NASA Scientific and Technical Information Database.

Author:
Publisher:
ISBN:
Category : Medicine
Languages : en
Pages : 24

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Author: Information Center for Hearing Speech and Disorders
Publisher: Springer Science & Business Media
ISBN: 147570626X
Category : Medical
Languages : en
Pages : 779

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Book Description
Information analysis centers were developed to help the scientist and practitioner cope with the ever increasing mass of published and unpublished information in a specific field. Their establishment resulted from a further extension of those pressures that had brought about the formation of the specialized primary journal and the abstracting services at the turn of the century. The information analysis center concept was greatly advanced by the 1963 report of the President's Science Advisory Committee Panel on Science Information. This report stated: " . . . scientific interpreters who can collect relevant data, review a field, and distill information in a manner that goes to the heart of a technical situation are more help to the overburdened specialist than is a mere pile of relevant docu ments. " Such specialized information centers are operated in closest possible contact with working scientists in the field. These centers not only furnish information about ongoing research and dis seminate and retrieve information but also create new information and develop new methods of infor mation analysis, synthesis, and dissemination. The continually expanding biomedical literature produced by scientists from the world's laboratories, research centers, and medical centers led the National Institute of Neurological Diseases and Stroke in 1964 to initiate a National Neurological Information Network of specialized centers for neurological information. The Centers are designed to bring under control and to promote ready access to important segments of the literature.

Author: National Academies of Sciences, Engineering, and Medicine
Publisher: National Academies Press
ISBN: 0309671035
Category : Social Science
Languages : en
Pages : 317

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Book Description
Social isolation and loneliness are serious yet underappreciated public health risks that affect a significant portion of the older adult population. Approximately one-quarter of community-dwelling Americans aged 65 and older are considered to be socially isolated, and a significant proportion of adults in the United States report feeling lonely. People who are 50 years of age or older are more likely to experience many of the risk factors that can cause or exacerbate social isolation or loneliness, such as living alone, the loss of family or friends, chronic illness, and sensory impairments. Over a life course, social isolation and loneliness may be episodic or chronic, depending upon an individual's circumstances and perceptions. A substantial body of evidence demonstrates that social isolation presents a major risk for premature mortality, comparable to other risk factors such as high blood pressure, smoking, or obesity. As older adults are particularly high-volume and high-frequency users of the health care system, there is an opportunity for health care professionals to identify, prevent, and mitigate the adverse health impacts of social isolation and loneliness in older adults. Social Isolation and Loneliness in Older Adults summarizes the evidence base and explores how social isolation and loneliness affect health and quality of life in adults aged 50 and older, particularly among low income, underserved, and vulnerable populations. This report makes recommendations specifically for clinical settings of health care to identify those who suffer the resultant negative health impacts of social isolation and loneliness and target interventions to improve their social conditions. Social Isolation and Loneliness in Older Adults considers clinical tools and methodologies, better education and training for the health care workforce, and dissemination and implementation that will be important for translating research into practice, especially as the evidence base for effective interventions continues to flourish.

Author: Söhnke M. Bartram
Publisher: CFA Institute Research Foundation
ISBN: 195292703X
Category : Business & Economics
Languages : en
Pages : 95

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Book Description
Artificial intelligence (AI) has grown in presence in asset management and has revolutionized the sector in many ways. It has improved portfolio management, trading, and risk management practices by increasing efficiency, accuracy, and compliance. In particular, AI techniques help construct portfolios based on more accurate risk and return forecasts and more complex constraints. Trading algorithms use AI to devise novel trading signals and execute trades with lower transaction costs. AI also improves risk modeling and forecasting by generating insights from new data sources. Finally, robo-advisors owe a large part of their success to AI techniques. Yet the use of AI can also create new risks and challenges, such as those resulting from model opacity, complexity, and reliance on data integrity.

Author: Audio Engineering Society
Publisher:
ISBN:
Category : Acoustical engineering
Languages : en
Pages : 610

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Book Description
"Directory of members" published as pt. 2 of Apr. 1954- issue.

Author:
Publisher:
ISBN:
Category : Biomedical engineering
Languages : en
Pages : 316

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Book Description