• Journal of international Conference on Electrical Machines and Systems
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• v.1 no.3
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• pp.321-329
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• 2012

Providing variable load for testing a motor in high speed conditions is usually a difficult task. The eddy current brake can be used in application of load testing of motors. This paper deals with construction of a novel claw pole eddy current brake which is employed as a load for a DC counter rotating motor (CRM). These kinds of motors have two inner and outer shafts that rotate in opposite directions simultaneously, which are particularly suitable for under water propulsion systems. The prototype 45KW eddy current brake consists of two parts. One of them is installed on the inner shaft of the 60KW DC CRM and the other one is installed on its outer shaft. The simulation and experimental results with prototype brakes are also analyzed by using MATLAB/Simulink and the operational characteristic of the brake is demonstrated as a function of the motor speed and current of the magnetic poles.

• Journal of Korean Library and Information Science Society
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• v.34 no.1
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• pp.331-349
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• 2003

This study explores what kinds of strategies are appropriate for the academic libraries to upgrade their services and vitalize their organizational culture. The sources related to the organizational development theory and the organization of the academic libraries are gathered and examined for this study. And this study suggests the realization of team system the development of knowledge management and teaming organization culture, the establishment of strategic plan as the strategies for the organizational development of the academic libraries in Korea.

• Journal of the Korean Chemical Society
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• v.58 no.3
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• pp.303-312
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• 2014

In this study, we analyzed the characteristics of science academic achievement by multiple culture and North Korean migrant students types, percentage of correct answer and discrimination per items per groups, and contents domains using quantitative and qualitative method in the National Assessment of Educational Achievement (NAEA). As a results of analysis, the degree of science academic achievement of the students from multiple culture and North Korean is much lower than that of the general students. Also, the science academic achievement of the students from multiple culture and North Korean migrant is different from the general students. Especially, science academic achievement of the immigrated students and the North Korean migrant students was lowest. The analysis of items that the difference of the percentage of correct answer was large showed that the students from multiple culture and North Korean migrant were equally weak to it in all contents domains, but that the students from international marriage family born in country were weak in some areas. Therefore, the appropriate the teaching and learning method and the educational support is needed considering the group situation, so the educational implications are discussed.

• International Journal of Advanced Culture Technology
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• v.9 no.1
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• pp.136-142
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• 2021

This study was conducted by researchers to compare the differences between the ratings of mothers and teachers on young children's academic ability and learning ability, and to confirm their influence on elementary school academic performance ability. This study was conducted using data from the 7th year(2 014) and 10th year(2017) of the panel study on Korean children. The analysis data were individual basic background, academic ability, preparation for learning, and academic performance ability. 600 children were used for the study. We suggests that close interaction and cooperation between mother and teacher are necessary to support young children's academic ability and learning preparation.

• The Journal of Asian Finance, Economics and Business
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• v.9 no.4
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• pp.131-142
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• 2022

The research aims to test the impact of marketing culture and rational decisions in academic entrepreneurship during entrepreneurial marketing by focusing on the main problem and the challenges that Iraqi private universities face. The most important of these challenges is probably the inability of the private universities to keep pace with the development and the environmental challenges. The researcher chose 26 private Iraqi universities/colleges for the study. The sample was taken from deans, assistant deans, and heads of departments, with 310 people distributed among the various colleges. The researcher used the electronic questionnaire as a tool for collecting information. Data analysis was based on the (SPSS) and (AMOS) programs. The researchers arrived at many conclusions. The most important finding was the impact on both the marketing culture and rational decision on academic entrepreneurship through entrepreneurial marketing. The higher administration in the Iraqi private universities/colleges always strive to adhere to the marketing values, norms and traditions through a commitment to rational decisions to achieve academic entrepreneurship. The higher administrators increase their commitment and adherence to this influence by adhering to marketing entrepreneurship.

• Journal of the Korean Society for Library and Information Science
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• v.34 no.4
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• pp.123-142
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• 2000

The purpose of this study is to explore the culture of an academic library, fictitiously titled the New Millennium Library(NML). The study employed various research methods: pilot interviews with academic library workers, field observation at NML, a value survey conducted among NML workers and structured interviews with selected volunteers fromthe pool of survey respondents. Information gathered on the NML's culture is presented in a chart of five cultural dimensions and three organizational layers. The study is expected to inform library culture research as well as organizational culture research through a utilization of mixed methodology.

• International Journal of Advanced Culture Technology
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• v.11 no.2
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• pp.73-81
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• 2023

We conducted a survey related to study methods to identify the factors that have an influence on the academic achievement of university students and analyzed the results of this survey for correlation with students' GPA, which represents academic achievement. Test preparation and effective study habits were found to be the most important factors in overall student achievement. However, when divided by grade, maintaining health and satisfaction with school life are the most important factors for sophomores. Rather, in grades 3 and 4, time spent maintaining health is negatively reflected in improving academic achievement. Divided into gender, male students review or daily academic effort is an important factor in academic achievement, but in the case of female students, there is no difference in relative academic achievement because the amount of review and academic effort are small. For students who have experienced military service, review and test preparation are important to academic achievement, but for students who have not experienced military service, review has no effect on relative academic achievement.

• Anatomy and Cell Biology
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• v.56 no.4
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• pp.508-517
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• 2023

In cancer patients, chemo/radio therapy may cause infertility by damaging the spermatogenesis affecting the self-renewal and differentiation of spermatogonial stem cells (SSCs). In vitro differentiation of stem cells especially mesenchymal stem cells (MSCs) into germ cells has recently been proposed as a new strategy for infertility treatment. The aim of this study was to evaluate the proliferation and differentiation of SSCs using their co-culture with Sertoli cells and conditioned medium (CM) from adipose tissue-derived MSCs (AD-MSCs). Testicular tissues were separated from 2-7 days old neonate Wistar Rats and after mechanical and enzymatic digestion, the SSCs and Sertoli cells were isolated and cultured in Dulbecco's modified eagle medium with 10% fetal bovine serum, 1X antibiotic, basic fibroblast growth factor, and glial cell line-derived neurotrophic factor. The cells were treated with the CM from AD-MSCs for 12 days and then the expression level of differentiation-related genes were measured. Also, the expression level of two major spermatogenic markers of DAZL and DDX4 was calculated. Scp3, Dazl, and Prm1 were significantly increased after treatment compared to the control group, whereas no significant difference was observed in Stra8 expression. The immunocytochemistry images showed that DAZL and DDX4 were positive in experimental group comparing with control. Also, western blotting revealed that both DAZL and DDX4 had higher expression in the treated group than the control group, however, no significant difference was observed. In this study, we concluded that the CM obtained from AD-MSCs can be considered as a suitable biological material to induce the differentiation in SSCs.

• International Journal of Advanced Culture Technology
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• v.8 no.1
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• pp.98-106
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• 2020

In this paper, we show the career path of college students from the perspective of positive psychology. Specifically we conducted the study to investigate a role of grit in the relationship between college students' occupational calling and academic achievement and career stress. 151 college students participated in this study and they completed the Korean version of the Calling and Vocational Questionnaire, Grit Scale, and Career Stress Scale. To assess their academic achievement, participants agreed to obtain their GPA from online system. The results of this study showed that occupational calling had a positive correlation with academic achievement and negatively correlated with career stress. In addition, it was confirmed that grit mediated the relationship between calling and academic achievement and career stress. Based on these results, the positive effects of occupational calling of college students, implications of this study, and suggestions for future research are discussed.

• International Journal of Advanced Culture Technology
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• v.7 no.4
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• pp.14-22
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• 2019

This study is intended to look into the effects of depression and stress on college life adjustment of ophthalmic optics students. To achieve this, a survey was empirically carried out to 142 male and female students majoring in ophthalmic optics at colleges in Gangwon-do. The findings are as follows: Depression had a significant effect on academic adjustment and social adjustment, but no significant effect on emotional adjustment and college satisfaction. Stress also had a significant effect on academic adjustment, but no significant effect on social adjustment, emotional adjustment and college satisfaction. The above results showed that depression and stress were major factors affecting academic and social adjustments, and academic adjustment, respectively. Which means that depression restricted the activities of academic adjustment and social adjustment, and did not have a close relationship with psychological mechanisms - emotional adjustment and college life satisfaction. Stress also had a significant effect on academic adjustment, but did not have a direct relationship with social adjustment, emotional adjustment and college satisfaction.