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Σάββατο 16 Φεβρουαρίου 2019
Development of a hearing help-seeking questionnaire based on the theory of planned behavior
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Size-dependent nonlinear pull-in instability of the clamped cylindrical thin micro-/nanoshell based on the non-classical theories
Abstract
In recent decades, non-classical continuum theories have been commonly utilized to model material discontinuities in micro-/nanoscales. In the present study, modified strain gradient theory (MSGT) together with the fully clamped cylindrical thin-shell model has been adopted to investigate the size-dependent nonlinear pull-in instability of thin cylindrical nano-/microshell. The modified strain gradient theory in cylindrical coordinates and virtual work principle has been applied to derive the constitutive size-dependent equations of motion. In this study, the linear strains have been utilized to establish a system of three-coupled partial differential equations. Further, effect of van der Waals force has been included in the nonlinear governing equations of the systems, and extended Kantorovich method has been used to solve the nonlinear differential equations that in turn lead to achieving the pull-in parameters of the microshell. From theoretical point of view, effect of van der Waals attraction, the size dependency, and the importance of coupling between them on the instability performance have been discussed and the pull-in parameters, i.e., critical mid-deflection and instability voltage have been determined. It was found that comparable pull-in parameter of MSGT to those obtained by the classic theory, and modified couple stress theory depends only on the length scale of the microshell.
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Development of a hearing help-seeking questionnaire based on the theory of planned behavior.
| Related Articles |
Development of a hearing help-seeking questionnaire based on the theory of planned behavior.
Int J Audiol. 2019 Feb 15;:1-9
Authors: Arnold M, Small BJ, Hyer K, Chisolm T, Frederick MT, Silverman SC, Saunders GH
Abstract
OBJECTIVE: Our objective was to develop and assess a questionnaire measuring the constructs of the theory of planned behaviour (TPB) regarding older adults' behaviours towards seeking a hearing test.
DESIGN: Older adults who failed a hearing screening completed a newly developed Theory of Planned Behavior-Hearing Help Seeking (TPB-HHS) questionnaire. A principal components analysis (PCA) examined the factor structure of the questionnaire, and a reliability analysis determined the internal consistency of the factors. An examination of six-month follow-up data determined whether the questionnaire differentiated between individuals who did and did not seek out a hearing test by comparing their TPB-HHS scores.
STUDY SAMPLE: Participants were 407 adults aged 50 to 89 recruited at community hearing screenings.
RESULTS: PCA and reliability analyses resulted in a 4-factor, 18 item questionnaire. Three of four factors demonstrated acceptable internal consistency. The TPB-HHS explained 60.18% of the variance and factors were interpreted to be measuring the constructs of Intentions, Perceived Behavioral Control, Attitudes, and Subjective Norms. Individuals who sought a hearing test scored significantly higher on the Intentions, Perceived Behavioral Control, and Attitudes scales than those who did not.
CONCLUSIONS: The TPB-HHS provides insight into underlying psychological mechanisms that drive behaviours related to hearing help-seeking in older adults.
PMID: 30767581 [PubMed - as supplied by publisher]
from #Audiology via ola Kala on Inoreader http://bit.ly/2U0m4v2
via IFTTT
Development of a hearing help-seeking questionnaire based on the theory of planned behavior.
| Related Articles |
Development of a hearing help-seeking questionnaire based on the theory of planned behavior.
Int J Audiol. 2019 Feb 15;:1-9
Authors: Arnold M, Small BJ, Hyer K, Chisolm T, Frederick MT, Silverman SC, Saunders GH
Abstract
OBJECTIVE: Our objective was to develop and assess a questionnaire measuring the constructs of the theory of planned behaviour (TPB) regarding older adults' behaviours towards seeking a hearing test.
DESIGN: Older adults who failed a hearing screening completed a newly developed Theory of Planned Behavior-Hearing Help Seeking (TPB-HHS) questionnaire. A principal components analysis (PCA) examined the factor structure of the questionnaire, and a reliability analysis determined the internal consistency of the factors. An examination of six-month follow-up data determined whether the questionnaire differentiated between individuals who did and did not seek out a hearing test by comparing their TPB-HHS scores.
STUDY SAMPLE: Participants were 407 adults aged 50 to 89 recruited at community hearing screenings.
RESULTS: PCA and reliability analyses resulted in a 4-factor, 18 item questionnaire. Three of four factors demonstrated acceptable internal consistency. The TPB-HHS explained 60.18% of the variance and factors were interpreted to be measuring the constructs of Intentions, Perceived Behavioral Control, Attitudes, and Subjective Norms. Individuals who sought a hearing test scored significantly higher on the Intentions, Perceived Behavioral Control, and Attitudes scales than those who did not.
CONCLUSIONS: The TPB-HHS provides insight into underlying psychological mechanisms that drive behaviours related to hearing help-seeking in older adults.
PMID: 30767581 [PubMed - as supplied by publisher]
from #Audiology via ola Kala on Inoreader http://bit.ly/2U0m4v2
via IFTTT
Development of a hearing help-seeking questionnaire based on the theory of planned behavior.
| Related Articles |
Development of a hearing help-seeking questionnaire based on the theory of planned behavior.
Int J Audiol. 2019 Feb 15;:1-9
Authors: Arnold M, Small BJ, Hyer K, Chisolm T, Frederick MT, Silverman SC, Saunders GH
Abstract
OBJECTIVE: Our objective was to develop and assess a questionnaire measuring the constructs of the theory of planned behaviour (TPB) regarding older adults' behaviours towards seeking a hearing test.
DESIGN: Older adults who failed a hearing screening completed a newly developed Theory of Planned Behavior-Hearing Help Seeking (TPB-HHS) questionnaire. A principal components analysis (PCA) examined the factor structure of the questionnaire, and a reliability analysis determined the internal consistency of the factors. An examination of six-month follow-up data determined whether the questionnaire differentiated between individuals who did and did not seek out a hearing test by comparing their TPB-HHS scores.
STUDY SAMPLE: Participants were 407 adults aged 50 to 89 recruited at community hearing screenings.
RESULTS: PCA and reliability analyses resulted in a 4-factor, 18 item questionnaire. Three of four factors demonstrated acceptable internal consistency. The TPB-HHS explained 60.18% of the variance and factors were interpreted to be measuring the constructs of Intentions, Perceived Behavioral Control, Attitudes, and Subjective Norms. Individuals who sought a hearing test scored significantly higher on the Intentions, Perceived Behavioral Control, and Attitudes scales than those who did not.
CONCLUSIONS: The TPB-HHS provides insight into underlying psychological mechanisms that drive behaviours related to hearing help-seeking in older adults.
PMID: 30767581 [PubMed - as supplied by publisher]
from #Audiology via ola Kala on Inoreader http://bit.ly/2U0m4v2
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