생산요소 관련 제조유연성이 제조성과에 미치는 영향에 대한 실증적 연구

최규상(Choi, Kyoosang),오중산(Oh, Joongsan) 한국경영교육학회 2010 한국경영교육학회 학술발표대회논문집 Vol.2010 No.6

본 연구는 자동차 부품산업과 전자 부품산업에 속한 제조업체들을 대상으로 생산요소 관련 제조유연성들(기능유연성, 기계유연성, 생산방식유연성) 간의 인과관계와 이들이 제조성과에 미치는 영향을 실증적으로 규명하기 위해 진행되었다. 본 연구에서 기능유연성은 작업자들의 다기능숙련 정도로 측정되었으며, 기계유연성과 생산방식유연성은 범주·이질성·이동성·균일함과 같은 네 가지 차원으로 측정되었다. 공장을 분석단위로 구조방정식을 이용하여 모형을 추정한 결과, 기능유연성은 다른 두 가지 제조유연성에 모두 긍정적인 영향을 미치는 것으로 확인되었다. 또한 기능유연성과 생산방식유연성은 모두 제조성과에 긍정적인 영향을 미치는 것으로 판명되었다. 반면 기계유연성은 예상과 달리 제조성과에 통계적으로 유의한 영향을 미치지 못하는 것으로 확인되었다. 따라서 기업은 기능유연성이나 생산방식유연성과 같은 무형의 생산요소와 관련된 유연성을 제고함으로써 제조성과를 개선할 수 있을 것으로 기대된다. The main purpose of this study is to investigate the causal relationships among functional flexibility, machine flexibility, method flexibility and manufacturing performance. The data of this study were collected from manufacturing companies operated in the automotive and electronic parts industries. Functional flexibility was measured by the degree of a worker's multi-skilling. Machine and method flexibilities were measured by four dimensions: range-number, range-heterogeneity, mobility and uniformity. The proposed relationships were tested at the factory level by using structural equation modeling. As anticipated, the results of this study suggest that functional flexibility has a positive effect on other manufacturing flexibilities. In addition, both functional and manufacturing flexibilities have positive influences on manufacturing performance. However, the effect of machine flexibility on manufacturing performance was not statistically significant. The findings of this study suggest that companies can improve their manufacturing performance by facilitating flexibilities ofintangible manufacturing resources such as functional flexibility and method flexibility.

초등학생의 식습관과 요 중 프탈레이트 대사체 농도와의 관계

최지희(Jihee Choi),김정훈(Jeonghoon Kim),최길용(Gilyoung Choi),김규상(KyooSang Kim) 한국환경보건학회 2018 한국환경보건학회지 Vol.44 No.5

Objectives: The purpose of this study was to examine the relationship between dietary habits and concentrations of urinary phthalate metabolite in elementary school children. Methods: This study was conducted in Seoul, South Korea. We collected urine samples from 156 children from a single school in September 2016. Information on dietary habits was obtained from the parents of the children. Five types of urinary phthalate metabolites were analyzed using a high-performance liquid chromatography tandem mass spectrometer. Multiple linear regression analysis was used to determine the factors affecting the concentrations of urinary phthalate metabolite. Results: Girls had a significantly lower concentration of urinary mono-n-butyl phthalate (MnBP) (p=0.006) than did boys. When the consumption of bean processed food and wrapped delivery food were more than once a week, urinary MnBP (p=0.021) and monobenzyl phthalate (MBzP) (p=0.032) concentrations were the highest, respectively. Conclusion: Several urinary phthalate metabolite concentrations were associated with demographic and dietary habits. Particularly, urinary MnBP and MBzP were associated with several processed foods. The findings of this study might be useful as basic data for establishing and educating on environmental health policy.

Motivation to Lead and Shared Leadership in Teams

Zeynep Giraylar(Zeynep Giraylar ),Kyoosang Choi(Kyoosang Choi) 한국자료분석학회 2023 Journal of the Korean Data Analysis Society Vol.25 No.1

More companies have started to adopt a model of self-managed team as their primary work design. As work environments get more complex, an appointed leader alone cannot fulfill all the necessary leadership responsibilities of a team. In this manner, the shared leadership within a team is of great importance for today's work environments. The primary purpose of the present study was to examine an antecedent of shared leadership. Focusing on leadership motivation, this study investigated how team members’ motivation to lead affects shared leadership of the team. This study also examined the effects of shared leadership on team performance using an objective team performance measure, which little previous studies have investigated. Data were obtained from 57 teams consisting of 3 to 5 members. They performed a computer-based business strategy game. Findings showed that the teams consisting of members with a high level of motivation to lead scores were positively related to shared leadership and shared leadership significantly predicted team performance. Theoretical and practical implications of this study are also discussed.

휴대용 XRF를 이용한 서울시 학교 내 어린이용

김규상(KyooSang Kim),박현경(Hyunkyung Park),최길용(Gilyoung Choi),임완령(Wanryong Lim),신규진(Kyoojin Shin) 한국환경보건학회 2017 한국환경보건학회지 Vol.43 No.3

Objectives: Excluding in their homes, children spend most of their time at an elementary school, daycare center, and/or kindergarten. For educational or recreational purposes, they make use of many children’s goods at these places. Some children’s goods contain phthalates and heavy metals with polyvinyl chloride (PVC), so due to their physiological and behavioral characteristics children are exposed to high concentrations of phthalates and heavy metals. This study aims to measure PVC and heavy metals, which are harmful substances in children’s goods which can have an effect on children’s health. Methods: Six samples of children’s goods were selected through cases of detected harmful substances and the results of previous research, including assembly blocks, model toys, household toys, bags, indoor play equipment, and floor mats. The selected items were measured using X-Ray Fluorescence (XRF), and the presence and content of environmentally harmful substances such as PVC or heavy metals in the materials of children s goods were examined. Results: The highest detection rate for PVC was observed in floor mats, and bags and indoor play equipment were higher than other goods in this regard. The highest detection rate for heavy metals was found in bags, followed by indoor play equipment, assembly blocks, household toys, model toys and floor mats. Except for bags containing heavy metals, five goods showed the highest level of Pb compared to other heavy metals. Floor mats contained the highest level of Pb, Cr, and Cu among all goods. Conclusion: Many children’s goods contain PVC and heavy metals, and high levels of heavy metals have been detected in some goods. It is necessary to manage children’s goods to support their health.

Assessment of relationship between the use of household products and atopic dermatitis in Seoul: focused on products with associated risks

Jihee Choi,Jeonghoon Kim,KyooSang Kim 환경독성보건학회 2019 환경독성보건학회지 Vol.34 No.2

The purpose of this study was to evaluate the relationship between the use of certain household products (HPs) at home and atopic dermatitis (AD) in adults. The study was conducted on 1,500 households in Seoul, South Korea. We obtained information on general characteristics, the use of HPs, and AD through an online panel survey in July 2018. HPs were selected as 23 kinds of products with associated risks that are management targets of the Ministry of Environment. The international study of asthma and allergies in childhood was used for the AD questionnaires. Logistic regression analysis was used to identify AD affected by the use of HPs. Average number of used HPs was 13.44 out of 23, and average usage frequency of HPs was 3.52 times a month at home in Seoul for the last 1 year. Compared with subjects with a low number of HPs used (reference), subjects with a high number of used HPs (4th quartile) were more likely to have lifetime diagnosis of AD (odds ratio (OR) = 1.77, 95% confidence interval (CI); 1.23-2.54), symptoms of AD in the last 12 months (OR = 2.66, 95% CI; 1.92-3.70), and treatment of AD in the last 12 months (OR = 2.37, 95% CI; 1.48-3.80). Compared with subjects with a low HPs usage frequency (reference), subjects with a high HPs usage frequency (4th quartile) were more likely to have lifetime diagnosis of AD (OR = 1.88, 95% CI; 1.31-2.70), symptoms of AD in the last 12 months (OR = 2.14, 95% CI; 1.54-2.96), and treatment of AD in the last 12 months (OR = 2.23, 95% CI; 1.39-3.60). Therefore, the use of HPs was significantly associated with AD. The findings of this study might be useful as basic data for managing allergic diseases and establishing preventive measures.

Potential nonmonotonous association between di(2-ethylhexyl) phthalate (DEHP) exposure and atopic dermatitis in Korean children

Won-Jun Choi(최원준),Ho-Jang Kwon,Soyoung Hong,Wan Ryung Lim,Hyunjung Kim,Jeonghoon Kim,Chaebong Kim,KyooSang Kim 대한직업환경의학회 2013 대한직업환경의학회 학술대회 논문집 Vol.2013 No.11

서울시 어린이집 실내의 먼지 프탈레이트 농도와 아동의 소변 프탈레이트 대사물의 농도

홍소영(Soyoung Hong),김규상(KyooSang Kim),최원준(Won-Jun Choi),권호장(Ho-Jang Kwon),임완령(Wan Ryung Lim),김정훈(Jeonghoon Kim),김원(Won Kim) 환경독성보건학회 2013 한국독성학회 심포지움 및 학술발표회 Vol.2013 No.10

팀 내 과업갈등과 관계갈등의 비대칭이 성과에 미치는 영향

이찬규(Changyu Lee),최규상(Kyoosang Choi) 대한경영학회 2018 大韓經營學會誌 Vol.31 No.7

리더의 조직풍토에 대한 통제수준이 리더십 로맨스에 미치는 영향

강희경(Heekyung Kang),최규상(Kyoosang Choi) 대한리더십학회 2018 리더십연구 Vol.9 No.4

Why do followers over-attribute to their leaders for organizational performance? We have built a conceptual model based on the fact that followers tend to attribute to the organization’s leadership because leaders control the determinants of the organizational outcome. With our prism into the romance of leadership based on attribution theory of leadership, we worked on how the romance of leadership is subject to the level of control/influence of leaders in relation to the organizational climate that affects its performance. The leaders’control of organizational climate influences the action and attitudes of organizational members and then affects organizational performance. Our study intends to diversify the future one in the romance of leadership theory by further looking into the leadership attribution strength through the level of organizational control over organizational climate. We may need to intensify the romance of leadership for sustaining followership, but excessive leadership control may undermine the initiatives and creativity of organizational members. Thus, our study suggests the necessity of a “right” structural outfit that prevents such negative effects. 조직성과의 원인을 리더에게 과도하게 귀인하는 현상인 리더십 로맨스는 왜 나타나는가? 본 연구는 조직성과의 결정요인들을 통제하거나 조절할 수 있는 영향력을 리더십이 갖고 있기에 팔로워의 리더십 귀인현상이 나타날 수 있다는 점에 초점을 두고 연구모형을 제시하였다. 리더십 귀인이론을 토대로 리더십 로맨스 현상을 살펴보고, 조직성과에 영향을 주는 조직풍토에 대한 리더의 통제와 영향력 수준이 팔로워가 지각하는 리더십 로맨스에 어떠한 영향을 미치는지 분석하였다. 리더의 통제 하에 있는 조직풍토는 구성원들의 행동과 태도에 영향을 주어 조직성과의 결과도 달라질 수 있다. 본 연구는 리더의 조직통제 수준을 통해 조직성과에 대한 리더십 귀인 강도를 설명할 수 있는 이론적 논의를 제공 함으로써, 향후 리더십 로맨스 이론을 다각도로 연구하는데 기여하고자 한다. 또한 팔로워십을 지속하기 위해 리더십 로맨스 강도가 증가할 필요가 있겠으나, 리더의 통제수준의 과대 강화로 나타날 수 있는 구성원의 주도성과 창의성의 훼손과 같은 부정적 효과를 방지하는 조직시스템 구축의 필요성을 시사하고자 한다.

과업 갈등과 건설적 비판

이찬규(Lee, Changyu),최규상(Choi, Kyoosang) 한국인사관리학회 2015 조직과 인사관리연구 Vol.39 No.4

팀의 과업수행과 문제해결을 위한 팀 구성원들 간의 상호작용 과정에서 갈등은 흔히 발생하는 현상이다. 그동안 팀 내 갈등연구는 과업갈등과 관계갈등으로 구분하여 팀 효과성에 미치는 차별적인 영향을 밝히는 데 초점을 두어왔다. 지금까지의 연구에서 관계갈등이 팁 효과성에 미치는 영향은 일관되게 부정적이었지만, 과업갈등이 팀 효과성에 미치는 영향은 혼재된 결과를 보여주고 있다. 본 연구에서는 과업갈등 자체가 팀 기능을 향상시키는 것이 아니라는 논의를 토대로 과업갈등이 팀 효과성에 도움이 되는 건설적인 갈등으로 이어질 수 있는 상황요인을 찾고자 하였다. 구체적으로 본 연구는 팀 내 과업갈등이 건설적 비판에 미치는 영향과 과업갈등의 부정적 효과를 감소시키는 조절변수로서 팀 내 신뢰의 역할, 그리고 건설적 비판이 팀 효과성에 미치는 영향을 살펴보았다. 54개의 팀을 대상으로 실증 분석한 결과, 과업갈등은 건설적 비판에 부(-)적인 영향을 미치고, 이 관계에서 팀 내 신뢰는 과업갈등이 건설적 비판에 미치는 부정적인 영향을 유의미하게 감소시키는 것으로 나타났다. 마지막으로 건설적 비판은 팀 성과와 팀 만족에 정(+)적인 영향을 미치는 것으로 나타났다. Conflict in teams is inevitable. If conflict is constructively managed, it can increase team performance. Conflict research has distinguished between two types of conflict: relationship conflict, a bad type of conflict, and task conflict, a good type of conflict. Previous studies have consistently reported negative effects of relationship conflict on team effectiveness, but studies have yielded mixed findings with regard to the effects of task conflict. Based on the argument that task conflict itself may not be beneficial for teams, this study has focused on a contextual condition which can helps to transform task conflict into constructive conflict, that is constructive controversy. Data collected from 54 teams have revealed that task conflict was negatively related to constructive controversy. Findings also suggested that trust in teams decreased the negative effects of task conflict on constructive controversy and that constructive controversy was positively related to team performance and team satisfaction, respectively. Limitations and implications for future research were also discussed.