• Bulletin of the Korean Mathematical Society
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• v.51 no.2
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• pp.443-455
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• 2014

Atanassov introduced the irrational factor function and the strong restrictive factor function, which he defined as $I(n)=\displaystyle\prod_{p^{\alpha}||n}^{}p^{1/{\alpha}}$ and $R(n)=\displaystyle\prod_{p^{\alpha}||n}^{}p^{{\alpha}-1}$ in [2] and [3]. Various properties of these functions have been investigated by Alkan, Ledoan, Panaitopol, and the authors. In the prequel, we expanded these functions to a class of elements of $PSL_2(\mathbb{Z})$, and studied some of the properties of these maps. In the present paper we generalize the previous work by introducing real moments and considering a larger class of maps. This allows us to explore new properties of these arithmetic functions.

• Journal of the Korea Institute of Military Science and Technology
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• v.12 no.2
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• pp.236-247
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• 2009

In Korea, the driving system restriction criteria is strictly applied(gross weight 400kN, axial load 100kN). Especially after the Seoungsu Bridge accident, safety factor has been strictly applied. The Safety factor is applied to the cumulative results for each steps like design, construction, maintenance of the Bridge. Because of it, the bridge is undervalued compared to its capacity. So, this generates loss for both private and military sector(eg. logistical delays, structural damage, etc.). But analyzing data from many existing researches we have confirmed that the military heavy vehicle may pass through the first class bridges. In consequence, this study have focused on determining whether HETS vehicles can pass over the first class bridge, without safety issues, using MIDAS structural analysis program. The results have confirmed that the military heavy vehicle may pass over the bridge.

• Journal of Digital Convergence
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• v.13 no.11
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• pp.561-569
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• 2015

This study looks into the level of anxiety that middle school students have about PE class, dividing the classes into coed class and single-sex class and aims to conduct an in-depth analysis of differences in sub-factors of the anxiety. Subjects of the study were 554 students in randomly selected six middle schools located in Gyeonggi-do. To figure out the relationships among the sub-factors of the anxiety according to class, grade, academic record and the level of physical strength, a Multivariate Analysis of Variance model was set up and analysis was conducted. The results obtained through the research are as follows. First, it was predicted that the level of anxiety about PE class in middle school would have a great impact on the factor, 'punishment' by class (coed and single-sex). Second, it was predicted that the level of anxiety about PE class in middle school would have a great impact on the factors, 'anxiety about the event of sports' and 'conflict during class' by grade. Third, it was found that there was no difference in the level of anxiety about PE class that middle school students had according to their academic record in PE. Fourth, it was predicted that the level of anxiety about PE class in middle school would have a great impact on the factor of 'anxiety about the event of sports' by the level of physical strength.

• The Journal of the Convergence on Culture Technology
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• v.8 no.5
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• pp.329-340
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• 2022

The aim of this study is to examine the effect of teaching profession class using gamification on the academic self-efficacy and learning flow of pre-service early childhood teachers. 75 freshmen in the 2022 Early Childhood Education Department at A University located in Gyeonggi were participated and experienced 8 gamification-using classes over 12 weeks of 1 st semester. To examine the effectiveness of the class using gamification on academic self-efficacy and learning flow, a paired t-test for the pre-post test was conducted by analyzing the data of 65 students who faithfully answered both tests. Results of this study illustrated teaching profession class using gamification significantly improved the academic self-efficacy and its sub-factor, confidence of pre-service early childhood teachers, moreover, it also had a positive effect on learning flow and its sub-factor, cognitive learning flow of them. This study proved the effectiveness of the gamification-using class and provided subsequent studies for improving the quality of the gamification-using class.

• Journal of the Korean Home Economics Association
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• v.32 no.4
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• pp.241-250
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• 1994

The purpose of this study was to categorize lifestyle patterns and to define the characteristics of the lifestyle of middle class residents in Seoul. Questionnaires were administered to 1572 homemakers in Seoul. Statistics with the SPSS software package for factor analysis and F-test was used. The results showed that the type of car which the residents owned was a major indicator to classify SEC(Socio Economic Class). The middle class was categorized into four groups which were relevant classifications based on determining indicators obtained from previous studies: the lower middle class which owned a Tico was classified into the Economy Concerned Lifestyle category the middle class which owned an Elantra was classified into the Health Concerned and Hobby Oriented Lifestyle category the upper middle calss which owned a Sonata was classified into the Interior Design and fashion Oriented Lifestyle category and the lower upper class which owned a Grandeur was classified into the Hobby and Fashion oriented Lifestyle category.

• Proceedings of the KIEE Conference
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• 2000.07c
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• pp.2153-2155
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• 2000

The not an organization a branch stream the maintenance factor class on a class and the roadway type for roadway lighting design, the facted an insufficiency maintenance factor to apply our the country conditions. The consideration of maintenance factors is not being fully applied for roadway lighting design in Korea. This paper consider optical characteristics and maintenance factors as well as LID of Luminaires in designing roadway lighting. Consideration of maintenance factors that are neme specified according to LDD(Luminaire Dirt Depreciation), LLD(Lamp Lumen Depreciation), AADT(Average Annual Daily Traffic) based on IESNA regulation. The analyzed optical characteristics are applied for stagger and cross roadway types with maintenance factors in the range of 0.51$\sim$1.00 and equipment factor of 0.9.

• Journal of the Korean Institute of Educational Facilities
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• v.21 no.2
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• pp.3-12
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• 2014

Elementary School is a special facility where sense of place plays critical role for the development of children. Children in special education call for special attention as they hold inferior status compared to the children in regular class especially under the inclusive education policy. Eight cases of special education class area are analyzed in terms of social space, personal space and favorite place which is known to be basic factor for the development. As a result outdoor space found to be designed inappropriate even when designed accessible to the special education class as it could not meet the developmental needs of children in special education. Special education class area inside the building is also found to be too exclusive to allow social mix with children in regular class disregarding the intention of inclusive education. Location of these class should be strategic as it is critical to be linked with regular classroom efficiently still allowing psychological buffer as the children in special education tend to form restorative space inside the special education classroom showing the possibility of creating sense of place there.

• Journal of Korea Port Economic Association
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• v.32 no.3
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• pp.155-175
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• 2016

The purpose of this paper is to find the success factors for a newly developed marine financial city of Busan. For this, in the paper, we did case studies about advanced marine financial cities such as Hamburg, Oslo, Pireus, Shanghai, Singapore and London. And we made the hierarchical questionnaire for this study from literature reviews and interviews with experts in the field of the marine finance. A hierarchy was made up of 4 factors as the first class and the each factor consisted of four elements as the second class. The results of AHP analysis are as follows. First, the most important factor in the priorities with respect to marine financial city of Busan is "development of marine finance(0.371)" within the four factors as the first class. Next came "business environment(0.248)", "infrastructure(0.206)" and "support of government(0.175)". Second, the most important things is a clustering for marine finance(0.134) within 16 elements as the second class. We also analysed the priorities by the each factor of the second class. The most important element is an industrial clustering of marine finance(0.400) for "development of marine finance" and a clustering of the shipbuilding & marine industry(0.175) for "business environment" factor. And the ICT & transportation(0.326) is the most important element for "infrastructure" and a support of the national government(0.423) for "support of government" factor.

• Journal of the Korea Fashion and Costume Design Association
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• v.14 no.3
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• pp.111-122
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• 2012

This study analyzed the differences in value perception and purchasing intention for natural cosmetics by LOHAS class and investigated what influences people's value perception for natural cosmetics had on their purchasing intention. Total 450 questionnaires were distributed to adults of over 20s to 50s for the period from Dec. 1, 2011 to Dec. 14 and 410 questionnaires were used as analysis data. As for collected data, the statistical package SPSS 18.0 Version was used for factor analysis, frequency analysis, reliability test, one-way ANOVA, Chi-Square test, Scheffe-test, correlations analysis and multiple regression analysis. LOHAS class was divided into three groups (higher, middle and lower) based on LOHAS index. Through factor analysis, the value perception for natural cosmetics were divided into three factors (social value, emotional and functional value perception). The results of this study were obtained as below. First, in case of the value perception for natural cosmetics by LOHAS class, it was demonstrated that the higher LOHAS classes they were, the higher value perception for natural cosmetics (social, emotional and functional value perception) they had. Second, in case of the effects of the value perception for natural cosmetics by LOHAS class on their purchasing intention (intention to use and recommendation of usage), it was found that their value perception influenced their purchasing intention. Social value perception and functional value perception, especially social value perception largely affected the purchasing intention of all LOHAS classes, while emotional value perception didn't affected the purchasing intention.

• Fashion & Textile Research Journal
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• v.13 no.2
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• pp.215-225
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• 2011

The purpose of this study is to identify the differences in persuasive effectiveness of visual merchandising according to merchandise class. For the experiment, 8 stimuli brands were selected. A total of 360 questionnaires were obtained from college students. The results were as follows. First, VM cognition were divided into 3 factors by confirmatory factor analysis: coordination, attractiveness, and function. Second, coordination and function had a positive effect on brand attitude. Third, brand attitude had a positive impact on brand loyalty. Fourth, it was revealed that merchandise class had a moderating role in the influence of VM cognition on brand attitude. This study has a meaning in that the theoretical extension of previous studies on VM was executed and demonstrated the moderating role of merchandise class when brand attitude was formed by VM cognition.