Effects of decoupling on spectra of seismic waves

1962 ◽  
Vol 52 (1) ◽  
pp. 123-131
Author(s):  
D. E. Willis ◽  
James T. Wilson

Abstract A series of controlled high explosive shots were conducted by the Atomic Energy Commission in a salt mine near Winnfield, Louisiana, to investigate seismic decoupling theories. Two recording stations were used by the University of Michigan at various distances between 1.1 and 14.7 kilometers for a majority of these shots. Frequency analyses of the magnetic tape recordings were made and the results are presented showing the relationship of the frequency spectra as a function of charge size, distance from the source, and coupled vs decoupled shots. The smaller decoupled shots detonated in the large spherical cavities were observed to have somewhat higher predominate frequencies than the equivalent size coupled shots. A change in cavity size produced no significant difference in the shape of the spectra of the large decoupled shots.

1974 ◽  
Vol 68 (1) ◽  
pp. 93-105 ◽  
Author(s):  
Paul R. Abramson

The relationship of social class to partisan choice in the United States has declined during the postwar years. Through an analysis of presidential election surveys conducted by the Survey Research Center of the University of Michigan from 1948 through 1968, it is demonstrated that this decline is largely a result of generational change. Strong relationships between class and partisan choice persist among older voters, but among younger voters these relationships are weak. A time-series cohort analysis provides considerable support for an historically based generational explanation for age-group differences and permits examination of one process through which partisan realignments may occur.


2018 ◽  
Vol 2018 ◽  
pp. 1-8
Author(s):  
Ling Hu ◽  
Wanqun Chen ◽  
Ming Cheng ◽  
Ting Zhang ◽  
Shaoyang Lan ◽  
...  

To investigate the relationship of MUC1, MUC5AC, and the syndrome of spleen and stomach, 109 subjects (34 peptic ulcer (PU), 62 chronic gastritis (CG), and 13 healthy volunteers (CON)) were included. All the subjects included were surveyed with questionnaire to classify them into damp-heat syndrome of spleen and stomach (DHSS), spleen-qi deficiency syndrome (SQD), and CON, examined by gastric endoscope, and biopsied. Rapid urease and methylene blue staining (MBS) were performed on every subject to diagnose for Helicobacter pylori (Hp) infection, and both were defined as Hp-positive. Hematoxylin and eosin (HE) staining was performed on every specimen to explore the histomorphology, inflammatory degree, and inflammatory activity of different groups; then Elivision™ plus kit was used to test the expression of MUC1 and MUC5AC. All the results of digital images were reviewed by two experts blindly. The inflammatory degree with Hp infection was higher than those uninfected or CON, but no significant difference was found between DHSS and SQD. And the expressions of MUC5AC with positive Hp was higher than those with negative Hp or CON regardless of the deficiency and solid syndrome of spleen-stomach but not for MUC1. We speculate that the deficiency and solid syndrome of spleen-stomach is a condition like Tai Ji symbol of dynamic equilibrium, showing the higher expression of MUC5AC but no change of MUC1 in the circumstance of Hp infection.


Author(s):  
Marina A. Fedorova

The change in educational paradigms has led to the need to define new methodological regulations that allow to consider the objects of pedagogical reality from a different angle. This led to the need to study traditional issues of pedagogy in an innovative context. The issue of forming students’ independent learning activities is not new for pedagogy. However, we present it from the perspective of an integrative-reflexive approach, which allowed us to identify its internal potential for personal development. The theoretical methods of pedagogical research used in the study: analysis, synthesis, comparison, generalization, method of causal relationships research, etc., which allowed to mentally penetrate into the essence of the studied pedagogical phenomenon and rethink it in a new educational reality. It is established that the educational independent activity accumulates the reflexive and didactic potential for professional and personal formation and development in the process of studying at the university. The possibilities of reflexive discourse as a way of realizing the reflexive-didactic potential of educational independent activity in the learning process are determined. According to the structure of the process of reflection in educational independent activity we distinguish the stages of reflexive discourse: reflexive-indicative, reflexive-presentative and reflexive-realizational. We consider the relationship of these stages of the discourse with various types of reflection and features of self-assessment, self-analysis, self-design and self-realization as structural components of educational independent activity.


2017 ◽  
Vol 12 (7) ◽  
pp. 138
Author(s):  
Abdul Sattar H. Yousif ◽  
Firas Rifai ◽  
Hadeel Alhroot

This paper aims at investigating the relationship between the application of innovation and entrepreneurship system and the university competitive advantage in the Jordanian higher education sector.     To collect the required data, the number of some concerned individuals was surveyed through a carefully designed questionnaire that has become the main instrument to obtain the required data.A random sample of university managerial staff was withdrawn from five private Jordanian universities. The collected data was audited, reviewed and statically analyzed using the most relevant statistical test. The results of the statistical analysis have clearly pointed out that university adoption of innovation and entrepreneurship system has a significant effect on its competitive advantage.


2019 ◽  
Vol 14 (2) ◽  
pp. 68-79
Author(s):  
Saida Farhanah Sarkam ◽  
Nurul Syafika Mohd Nasir ◽  
Shatina Saad

The study aimed is to examine the relationship of brand image and service quality towards student loyaltyin purchasing at a university shop, namely UniShop, in the southern state of Malaysia. By understandingstudent loyalty, the university management might encourage students to shop at the UniShop and generaterevenues within the campus. The decreasing sales of UniShop are affected by a hypermarket located withinwalking distance to the university in August 2017. From the literature, the entrance of multinationalcompanies might affect the small companies surrounding them, including UniShop which is a smallenterprise. Thus, the research examined student loyalty in purchasing at UniShop by distributingquestionnaires to the students of the university. The researchers used proportionate stratified randomsampling to generalize the finding across all semester students in the university. The findings showed thatbrand image and service quality played an important role in student loyalty. Students were the maincustomers of a university shop, contributed most of the shop’s business sustainability, and generate indirectincome to the university. In order to maintain student loyalty, UniShop has to take some initiatives includingto increase the scale of products, focuses on student-centered services, improve the shop layout, and sellexclusive university merchandise to increase the student's self-belonging to the university products. Keywords: brand image, service quality, student loyalty, university shop


2020 ◽  
Author(s):  
Donald Likosky ◽  
Steven J Yule ◽  
Michael R Mathis ◽  
Roger D Dias ◽  
Jason J Corso ◽  
...  

BACKGROUND Of the 150,000 patients annually undergoing coronary artery bypass grafting, 35% develop complications that increase mortality 5 fold and expenditure by 50%. Differences in patient risk and operative approach explain only 2% of hospital variations in some complications. The intraoperative phase remains understudied as a source of variation, despite its complexity and amenability to improvement. OBJECTIVE The objectives of this study are to (1) investigate the relationship between peer assessments of intraoperative technical skills and nontechnical practices with risk-adjusted complication rates and (2) evaluate the feasibility of using computer-based metrics to automate the assessment of important intraoperative technical skills and nontechnical practices. METHODS This multicenter study will use video recording, established peer assessment tools, electronic health record data, registry data, and a high-dimensional computer vision approach to (1) investigate the relationship between peer assessments of surgeon technical skills and variability in risk-adjusted patient adverse events; (2) investigate the relationship between peer assessments of intraoperative team-based nontechnical practices and variability in risk-adjusted patient adverse events; and (3) use quantitative and qualitative methods to explore the feasibility of using objective, data-driven, computer-based assessments to automate the measurement of important intraoperative determinants of risk-adjusted patient adverse events. RESULTS The project has been funded by the National Heart, Lung and Blood Institute in 2019 (R01HL146619). Preliminary Institutional Review Board review has been completed at the University of Michigan by the Institutional Review Boards of the University of Michigan Medical School. CONCLUSIONS We anticipate that this project will substantially increase our ability to assess determinants of variation in complication rates by specifically studying a surgeon’s technical skills and operating room team member nontechnical practices. These findings may provide effective targets for future trials or quality improvement initiatives to enhance the quality and safety of cardiac surgical patient care. INTERNATIONAL REGISTERED REPORT PRR1-10.2196/22536


2013 ◽  
Author(s):  
Giovanni Nicolò Cavana

The critical edition of the correspondence (1665-1675), today housed at the University of Genoa library, between the Genoan patrician Nicolò Cavana and the bibliophile Fra' Angelico Aprosio di Ventimiglia includes an introduction and transcription of the letters, with both bibliographical and (where possible) explanatory notes on some now outdated terms. In consideration of the private nature of the 286 letters, reading them gives an interesting and informal view of seventeenth-century life, as well as much information on the variegated world of the Baroque book culture providing a constant backdrop to the relationship of collaboration and friendship between the two figures.


2021 ◽  
Vol 41 (5) ◽  
pp. 385-390
Author(s):  
Amit Kumar ◽  
Kuldeep Singh ◽  
Anil Kumar Siwach

National Institutional Ranking Framework (NIRF) was launched on 29 September 2015 by the Ministry of Human Resource Development, Government of India to rank the academic & research institutions across the country. The NIRF E-release of India Ranking 2020 was held on 11th June 2020. The present study analyses the top 100 Universities in terms of visualisation of data, the relationship of ranking with the parameters, and the relations among these parameters. Results of the study indicate that the Teaching, Learning & Resources (TLR) score for all the universities was almost similar while Research and Professional Practice (RP) score had a considerable variation and played a significant role in ranking by having a positive linear correlation with the total score with the value of R2= 0.746. RP also has a strong correlation with the Peer Perception (PR) of the university. The average library expenditure of top-10 universities was 9.45 crore per annum. It was also found that library expenditure has a positive correlation with RP and the universities with higher research productivity also have a more outstanding quality of publication in terms of citations.


2020 ◽  
Vol 24 (1) ◽  
pp. 4-11
Author(s):  
A. Ceviker ◽  
K. Ozlu ◽  
G. Deryahanoglu ◽  
C. Demirdoken ◽  
H. Turkay

Background and Study Aim: The aim of this study is to investigate the relationship between personality traits and optimal performance mood in response to gender, sports branch, weekly training hours of the athletes competing in the university league variables. Material and Methods: A total of 250 volunteer athletes from 17 universities, 75 female and 175 male, participated in the study. 95 of the athletes are basketball and 155 are volleyball players. In addition to the personal information form which includes demographic information prepared by the researchers, “Optimal Performance Mood Scale” developed by Jackson and Eklund (2004) and adapted to Turkish by Aşçı et al. (2007) and “5-factor personality traits scale” developed by Benet-Martinez, John (1998) and adapted to Turkish by Schmitt, Allik, McCrae and Benet-Martinez (2007) were applied to the participants. Frequency analysis was applied in order to determine the participants’ demographic information based on the statistical data analysis, and unpaired t-test was applied to determine the personal traits and optimal performance mood scores in response to gender, branch, weekly training sessions. Furthermore, in order to determine the relationship between that personal traits and optimal performance moods correlation test was applied. Statistical significance level was accepted as p <0.05. Results: As a result of the analysis of the data obtained; while there was no significant difference between the athletes according to the gender variable, it was concluded that there was a significant difference between sports branch, weekly sport variables and personality traits and optimal performance moods. In addition, a positive correlation was found between the participants' personality traits and optimal performance moods as a result of the correlation test (r=0,608). Conclusions: This study has proved that personality traits and optimal performance moods effect one another positively and gender variable makes no significant difference. Yet, sport branches and weekly training hours makes meaningful differences between general and subscales scores.


Author(s):  
Gillian Barzaga

ABSTRACT Objective: To determine the relationship of the surgeon handedness and operative site laterality on operative duration and hearing improvement in otologic surgery, and to further explore whether this relationship may be related to surgeon experience. Methods:Design: Retrospective CohortSetting: Tertiary Private Teaching HospitalParticipants: Seventy-three (73) patients aged 18 to 65 years old who underwent primary ear surgery under general anesthesia between January 2016 and December 2019 were retrospectively divided into two groups: 39 contralateral and 34 ipsilateral. The operative durations and hearing improvements were compared using independent t-tests, with consideration of surgeon experience in years further stratifying patients. Results: There was no significant difference in operative duration, t(71) = 1.14, p = .26, between the contralateral (M = 281.95 minutes, SD = 71.82) and ipsilateral (M = 261.15, SD = 79.26) groups. This same pattern was more pronounced among surgeons with 10+ years of experience although there was also no significant difference in operative time, t(33) = 1.31, p = .19 for both ipsilateral and contralateral surgeries There was no statistically significant difference, t(36) = -0.72, p = .47, in overall mean hearing gain among patients in the contralateral (M = +2.22 dB, SD = 10.54) and ipsilateral (M = +5.12 dB, SD = 14.26) groups. Although the difference was also not statistically significant, t(16) = -1.94, p = .07 for contralateral (M = 0.00, SD = 5.43) and ipsilateral (M = +7.95 dB, SD = 11.52) procedures performed by surgeons with experience of 10 years or more, a mean hearing gain of +7 dB in the ipsilateral group compared to 0 dB in the contralateral group was notable. Conclusion: This study did not prove that regardless of surgeon experience, right-handed surgeons operating on the right ear and left-handed surgeons operating on the left ear have better ear surgery outcomes of operative duration and hearing improvement compared to right- handed surgeons operating on the left ear and left-handed surgeons operating on the right ear. Future studies on larger samples with more complete data may yet demonstrate this effect.


Sign in / Sign up

Export Citation Format

Share Document