• Korean Journal of Applied Biomechanics
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• v.19 no.3
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• pp.449-455
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• 2009

The purpose of this study was to analyze the kinetics variables of GRF by dtance type during forehand stroke. Eight high school tennis players, who have never been injured for last six months, in Busan were chosen for the study. They performed horizontal swing and vertical swing that it was done each five consecutive trial in the condition of square, semi-open and open stance. It was filmed by 6 video camera and used with 3-dimensional motion analyzer system and GRF system. The following kinetic variables were analyzed in relation to left leg and right leg GRF. The conclusion were as follow: 1. In square and semi-open stances, the horizontal ground reaction force was decreased at impact in left leg regardless of swing type, whereas open stance was increased at impact to the tiptoe in both legs. 2. In square and semi-open stances, the vertical ground reaction force was increased at impact in left leg regardless of swing types, whereas open stance was decreased at impact to vertical direction in both legs.

• Journal of Korean Society of Transportation
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• v.32 no.5
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• pp.487-496
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• 2014

Much research has been actively done so far on the inconvenience of each urban railway station; however, Research is on importance factor analysis on transfer facilities by considering characteristics of railway stations is relatively insufficient. In this study, a novel method of finding causality between transfer facilities(movement, information, comfortability, etc,) in terms of demands and platform types is provided by using SEM(Structural Equation Model). The results of SEM analysis show that a large demand transfer station if combined with island and segregate platform types, has a higher importance factor with respect to information facility, movement facility position and comfortability. In addition, a medium demand transfer station if combined with separate and separate platform types has a higher importance factor with respect to information facility, movement facility and comfortability.

• Proceedings of the KSEG Conference
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• 2002.04a
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• pp.129-136
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• 2002

대전광역시의 도심하천인 갑천, 유등천, 대전천을 대상으로 하천수의 수리화학적 특성과 동위원소 특성을 분석하였다. 하천의 수리화학적 특성은 상류에서는 $Ca(Mg)-HCO_3$ 유형을 보이다가 도심권을 통과하면서 $Ca(Mg)-SO_4(Cl)$유형으로 전환되고 하류에서는 $Na(Ca)-HCO_3(Cl,{\;}SO_4)$ 유형으로 변화를 보였다. 이와 같은 화학적 유형의 변화는 자연적 영향보다는 인위적 오염물질의 유입에 의한 것으로 해석된다. 하천수의 전기전도도와 수리화학적 유형으로 보면 대전천보다는 유등천과 갑천이 비교적 좋은 수질특성을 보인다. 그러나 하수종말처리장에서 방류되는 방류가 합류되는 갑천하류부터는 수질이 급격하게 나빠진다. 하천수의 pH는 상류에서 중성을 보이다가 도심권을 지나면서 최고 pH 9.8정도의 알카리성을 보인다. 이는 아파트의 우수관을 통한세제 유입에 기인하는 것으로 보인다. 하천수의 ${\delta}^{13}l3C-HCO_3$ 관계에서 중탄산 함량의 증가에 따른 ${\delta}^{13}C$ 값의 증가는 하천수내 $CO_2$의 기원이 유기물에서 무기물의 영향이 커짐을 의미한다. ${\delta}^{34}S-SO_4$의 함량관계는 황산염의 농도가 증가함에 따라서 ${\delta}^{34}S$ 값은 낮아진다. 갑천, 유등천, 대전천의 순으로 황산염의 농도가 증가하고 ${\delta}^{34}S$ 값은 낮아지는 경향을 보인다. 이를 바탕으로 볼 때 갑천 중상류의 경우에는 황산염의 기원이 자연적 반응외 비료 등으로부터 유입된 것으로 보이며, 대전천의 경우에는 유기오염에 의한 황산염의 유입이 상당한 것으로 판단된다. 갑천하류는 하수종말처리장의 방류수의 영향이 큰 것으로 해석된다. 대전시 도심하천수의 수리화학적수질 개선을 위해서는 하수종말처리장의 방류수 기준의 강화, 아파트단지에서의 세제의 유입의 차단, 그리고 부분적인 오염물질의 유입을 차단하여야 할 것이다.

• Journal of Service Research and Studies
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• v.6 no.1
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• pp.51-69
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• 2016

This study explores the moderating effects of personality types (Big'5) influence on the relationship between job satisfaction and turnover intension using dispositional approach. In order for that, we surveyed for employees of 4 service's company and 430 samples were used for empirical study. According to result, extroversion and conscientiousness among personality types had significant positive effects on job satisfaction. And agreeableness and conscientiousness had negative effects on turnover intention. but extroversion and conscientiousness had positive effects on turnover intention. Self-efficacy had interactive effects on the relationship between personality type and job satisfaction. but it influenced only agreeableness. The self-efficacy had moderating effects agreeableness on the relationship between personality type and turnover intention.

• Journal of Digital Convergence
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• v.14 no.6
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• pp.395-403
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• 2016

This study investigates SNS usage behaviors of SNS users with a change of SNS use environment and an increase of users. This study compares the difference of use motivation, preferred type, and main use SNS according to socio-demographic variable of SNS users using cross tabulation analysis and also conducts a comparative analysis of main use SNS of each SNS user using correspondence analysis. The results show main use motivation of SNS is relationship seek, most preferred type is closed type, and main use SNS is Kakaostory. Next, we find that there are differences on use motivation, preferred type, and main use SNS, depending on the socio-demographic characteristics of SNS users. The result of correspondence analysis shows how users are using SNS services and what structure their competitive relations of SNS services are made. In the conclusion, the study presents summary of the findings, implications, and tasks for further studies.

• The Journal of the Korea Contents Association
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• v.10 no.1
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• pp.305-316
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• 2010

The purpose of this study was to identify the relationships between preschool teachers' hemispheric mode indicator and creative personality. The subjects were 205 preschool teachers from kindergarten or nursery school in Busan. The McCanthy(1993)'s HMI(Hemispheric Mode Indicator) and Torrance(1988)'s WKOPAY(What Kind Of Person Are You?) were used to examine the relationships preschool teachers' hemispheric mode indicator and creative personality. Results of this study as follows ; first, the hemispheric mode indicator of right hemispheric dominance were significantly positively correlated to the creative personality and inquisitiveness but negatively correlated to self-confidence among elements of creative personality. Second, the creative personality was significant difference according to hemispheric dominance types. That is, the creative personality of right hemispheric dominance was significantly higher than that of left or exhibit balanced hemispheric dominance but it was no difference between left hemispheric dominance and exhibit balanced hemispheric dominance. Third, there were significant difference self-confidence, inquisitiveness, and awareness of others but no difference Acceptance of Authority and Disciplined Imagination among elements of creative personality according to hemispheric dominance types.

• Journal of the Institute of Electronics Engineers of Korea SC
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• v.46 no.6
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• pp.65-72
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• 2009

This paper presents a vision based localization method for indoor mobile robots using the types of vertices from a monocular image. In the images captured from a camera of a robot, the types of vertices are determined by searching vertical edges and their branch edges with a geometric constraints. For obtaining correspondence between the comers of a 2-D map and the vertex of images, the type of vertices and geometrical constraints induced from a geometric analysis. The vertices are matched with the comers by a heuristic method using the type and position of the vertices and the comers. With the matched pairs, nonlinear equations derived from the perspective and rigid transformations are produced. The pose of the robot is computed by solving the equations using a least-squares optimization technique. Experimental results show that the proposed localization method is effective and applicable to the localization of indoor environments.

• Journal of Digital Convergence
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• v.16 no.11
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• pp.255-265
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• 2018

This study investigated what kind of message forms and information sources more effect according to SNS' type and use intensity. To this end, this study did experimental analysis using collected data by survey which manufactured message forms and situational contents of information sources. According to analysis results, the effect of message forms showed difference according to SNS' type and use intensity. Realistic message showed greater effect in interest-based SNS and high use intensity. Evaluative message showed greater effect in relation-based SNS regardless of use intensity. The effect of information sources showed difference according to SNS' type. Friend or college and knower showed greater effect in relation- based SNS, and company showed greater effect in interest-based SNS. In the case of use intensity, friend or college showed the greatest effect without difference. Such results can provide a practical contribution in planning SNS advertising strategy. Future Studies need to expand survey variously into SNS and subject.

• The Journal of the Korea Contents Association
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• v.21 no.5
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• pp.737-745
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• 2021

Purpose: The purpose of this study is to investigate Death anxiety and Needs of Interpersonal caring behaviors of nurses in hospice wards focused on types of personality. Methods: The data were collected from 118 nurses working in hospice wards and analyzed SPSS Statistics 26. Results: Death anxeity was 2.41±0.27, and the highest subscale was Dying of Self(2.60±0.38). Needs of Interpersonal caring behaviors was 3.58±0.60, and the highest subscale was forgiving(3.74±0.64). significant static correlation between death anxeity and Needs of Interpersonal caring behaviors was confirmed(r=.265, p=.004). The affect of Death anxiety by personality type on Needs of Interpersonal caring behaviors was confirmed as a factor in which 'fear of others' dying' influences Needs of Interpersonal caring behaviors in Emotion centered type. Conclusion: Death anxiety and Needs of Interpersonal caring behaviors have significant static correlation, Death anxiety influenced Needs of Interpersonal caring behaviors in Emotion centered type.

• The Journal of the Korea Contents Association
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• v.22 no.3
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• pp.331-342
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• 2022

The business environment of today's small and medium-sized manufacturing enterprises (SMEs) has a tendency to shorten the product life cycle due to the rapid technological change. Therefore, in this study, an empirical study was conducted to understand the influence of CEO type and technological innovation capability on management performance through technological innovation performance as a medium. The subject of the study was a survey focusing on executive level and above of small and medium-sized manufacturing companies in the southeast region, and the research results are as follows. Overall, it was verified that the structural causal relationship between the technological innovation performance and the management performance of the CEO type and technological innovation capability of small and medium-sized manufacturing enterprises is a relationship that has a significant influence with mutual correlation. These results indicate that higher performance can be achieved when technological innovation performance is combined with the effect of technological innovation capability on management performance according to CEO type. In this way, SMEs are trying to present the need for various innovative activities to discover excellent technologies and acquire competence, and to suggest a development direction that requires efforts to improve the technological competitiveness of enterprises.