scholarly journals An Examination of 3D, Broadband Acoustic Propagation Physics in a Littoral Ocean Environment - an Extension to an ONR Primer Field Study in the Mid-Atlantic Bight

1997 ◽  
Author(s):  
Kevin B. Smith
Keyword(s):  
Field Study ◽  
Acoustic Propagation ◽  
Ocean Environment

Flow-dependent modeling of acoustic propagation based on DG-FEM method

2021 ◽  
Author(s):  
Zichen Wang ◽  
Jian Xu ◽  
Xuefeng Zhang ◽  
Can Lu ◽  
Kangkang Jin ◽  
...  
Keyword(s):  
Sound Propagation ◽  
Transmission Loss ◽  
Acoustic Propagation ◽  
Water Area ◽  
Current Speed ◽  
Propagation Model ◽  
Propagation Loss ◽  
Two Dimensional ◽  
Underwater Sound ◽  
Ocean Environment

AbstractThis paper proposes a two-dimensional underwater sound propagation model using the Discontinuous Galerkin Finite Element Method (DG-FEM) to investigate the influence of current on sound propagation. The acoustic field is calculated by the convected wave equation with the current speed parameter. Based on the current speed data from an assimilation model, a two-dimensional coupled acoustic propagation model in the Fram Strait water area is established to observe the variability in propagation loss under different seasonal velocities in the real ocean environment. The transmission loss and signal time structure are examined. The results obtained in different source frequencies are also compared. It appears that the current velocity, time and range variation all have an effect on underwater sound propagation.

scholarly journals Time-evolving acoustic propagation modeling in a complex ocean environment

2013 ◽  
Author(s):  
M. E. G. D. Colin ◽  
T. F. Duda ◽  
L. A. te Raa ◽  
T. van Zon ◽  
P. J. Haley ◽  
...  
Keyword(s):  
Acoustic Propagation ◽  
Propagation Modeling ◽  
Ocean Environment

Investigating the Unified Motive Scales

2020 ◽  
pp. 1-5
Author(s):  
Martin Bettschart ◽  
Marcel Herrmann ◽  
Benjamin M. Wolf ◽  
Veronika Brandstätter
Keyword(s):  
Field Study ◽  
Predictive Validity ◽  
Selection Process ◽  
Police Department ◽  
Longitudinal Field ◽  
Explicit Motives ◽  
Achievement Motive

Abstract. Explicit motives are well-studied in the field of personality and motivation psychology. However, the statistical overlap of different explicit motive measures is only moderate. As a consequence, the Unified Motive Scales (UMS; Schönbrodt & Gerstenberg, 2012 ) were developed to improve the measurement of explicit motives. The present longitudinal field study examined the predictive validity of the UMS achievement motive subscale. Applicants of a police department ( n = 168, Mage = 25.11, 53 females and 115 males) completed the UMS and their performance in the selection process was assessed. As expected, UMS achievement predicted success in the selection process. The findings provide first evidence for the predictive validity of UMS achievement in an applied setting.

Employees’ Critical Thinking, Leaders’ Inspirational Motivation, and Voice Behavior

2018 ◽  
Vol 17 (1) ◽  
pp. 33-41 ◽  
Author(s):  
Jing Jiang ◽  
Ang Gao ◽  
Baiyin Yang
Keyword(s):  
Critical Thinking ◽  
Field Study ◽  
Voice Behavior ◽  
Research And Practice ◽  
Inspirational Motivation ◽  
Positive Effect

Abstract. This study uses implicit voice theory to examine the influence of employees’ critical thinking and leaders’ inspirational motivation on employees’ voice behavior via voice efficacy. The results of a pretest of 302 employees using critical thinking questionnaires and a field study of 273 dyads of supervisors and their subordinates revealed that both employees’ critical thinking and leaders’ inspirational motivation had a positive effect on employees’ voice and that voice efficacy mediates the relationships among employees’ critical thinking, leaders’ inspirational motivation, and employees’ voice. Implications for research and practice are discussed.

Can Alcohol Intoxication lead to Safer Sex? A Field Study Approach

1999 ◽  
Author(s):  
Tara K. Macdonald ◽  
Mark P. Zanna ◽  
Geoffrey T. Fong ◽  
Alanna M. Martineau
Keyword(s):  
Field Study ◽  
Alcohol Intoxication ◽  
Safer Sex ◽  
Study Approach
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