Preliminary evidence for internal wave motion at boundaries of convecting and nonconvecting zones in layered thermohaline columns

1984 ◽  
Vol 11 (3) ◽  
pp. 283-289
Author(s):  
D.P. Grimmer ◽  
G.F. Jones
1983 ◽  
Vol 18 (1) ◽  
pp. 129-150 ◽  
Author(s):  
Mark K. Watson ◽  
R.R. Hudgins ◽  
P.L. Silveston

Abstract Internal wave motion was studied in a laboratory rectangular, primary clarifier. A photo-extinction device was used as a turbidimeter to measure concentration fluctuations in a small volume within the clarifier as a function of time. The signal from this device was fed to a HP21MX minicomputer and the power spectrum plotted from data records lasting approximately 30 min. Results show large changes of wave amplitude as frequency increases. Two distinct regions occur: one with high amplitudes at frequencies below 0.03 Hz, the second with very small amplitudes appears for frequencies greater than 0.1 Hz. The former is associated with internal waves, the latter with flow-generated turbulence. Depth, velocity in the clarifier and inlet suspended solids influence wave amplitudes and the spectra. A variation with position or orientation of the probe was not detected. Contradictory results were found for the influence of flow contraction baffles on internal wave amplitude.


1979 ◽  
Vol 22 (10) ◽  
pp. 1862 ◽  
Author(s):  
Vincenzo Malvestuto

1971 ◽  
Vol 70 (1) ◽  
pp. 157-167 ◽  
Author(s):  
B. D. Dore

AbstractA method of solution is given to the problem of internal wave motion in a non-homogeneous viscous fluid of variable depth. The approach is based on the inviscid theory of Keller and Mow(l) and on boundary-layer analysis. For internal progressive waves in uniform depths, it reduces essentially to the theory given by Dore(2). The present results are also applicable to surface waves when the fluid is homogeneous.


2019 ◽  
Vol 4 (6) ◽  
pp. 1445-1461
Author(s):  
Amee P. Shah ◽  
Mary Lou Galantino

Purpose Nationwide, upward trends exist in student issues with anxiety, stress, depression, and lowered classroom performance. As emotional awareness and emotional regulation skills are typically not addressed in professional discipline-specific courses, students experience challenges in their academic performance. This pilot research explored the effect of brief targeted classroom practices within an empowerment-based framework on domains of emotional intelligence. Method Twenty-two students in an undergraduate speech-language pathology class received a 13-week, biweekly, 15-min session of empowerment-based worksheet exercises to develop increased self-esteem, emotional awareness and regulation, and communication. Assessments of self-esteem, emotional intelligence, communication competence, and communication apprehension were conducted using validated scales, namely, the Rosenberg Self-Esteem Scale ( Rosenberg, 1965 ), the Quick Emotional Intelligence Self-Assessment ( Mohapel, 2015 ), the Self-Perceived Communication Competence Scale ( McCroskey & McCroskey, 2013 ), and the Personal Report of Communication Apprehension ( McCroskey, 1982 ), respectively. Midsemester and semester-end student reflections were collected. Results Paired t tests were significant in self-esteem and emotional quotient, including subdomains of emotional awareness, emotional management, social emotional awareness, and relational management. Significance was noted in communication competence in the subdomains of dyad interaction, stranger interaction, and acquaintance. Students' reflection showed significant improvement in empowerment and self-rated improvements in confidence, communication, connections with peers, and trust with instructor. Conclusion Preliminary evidence demonstrates positive outcomes with integration of intentional classroom exercises to build emotional intelligence (including emotional awareness and regulation), self-esteem, and communication. This empowerment model may assist faculty in developing effective pedagogical strategies to build students' self-resiliency.


2019 ◽  
Vol 62 (9) ◽  
pp. 3397-3412
Author(s):  
Michelle I. Brown ◽  
David Trembath ◽  
Marleen F. Westerveld ◽  
Gail T. Gillon

Purpose This pilot study explored the effectiveness of an early storybook reading (ESR) intervention for parents with babies with hearing loss (HL) for improving (a) parents' book selection skills, (b) parent–child eye contact, and (c) parent–child turn-taking. Advancing research into ESR, this study examined whether the benefits from an ESR intervention reported for babies without HL were also observed in babies with HL. Method Four mother–baby dyads participated in a multiple baseline single-case experimental design across behaviors. Treatment effects for parents' book selection skills, parent–child eye contact, and parent–child turn-taking were examined using visual analysis and Tau-U analysis. Results Statistically significant increases, with large to very large effect sizes, were observed for all 4 participants for parent–child eye contact and parent–child turn-taking. Limited improvements with ceiling effects were observed for parents' book selection skills. Conclusion The findings provide preliminary evidence for the effectiveness of an ESR intervention for babies with HL for promoting parent–child interactions through eye contact and turn-taking.


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