AC PDP의 효율 향상을 위한 cactus Fence 전극구조

정선길(Sun-Gil Jung),남형우(Hyung-Woo Nam),김동현(Dong-Hyun Kim),박차수(Cha-Su Park),이호준(Ho-Jun Lee),박정후(Chung-Hoo Park) 대한전기학회 2008 대한전기학회 학술대회 논문집 Vol.2008 No.7(초록집)

Design of Anaerobic Sequencing Batch Reactor(ASBR) Application to the Swine farm

정선인 ( Seon In Jung ) 강원대학교 농업과학연구소 2008 강원 농업생명환경연구 Vol.19 No.-

연구논문 : 유통 절임배추의 중금속, 잔류농약 및 식중독 안전성 조사

정선옥 ( Sun Ok Jung ),정지헌 ( Ji Hun Jung ),김성단 ( Sung Dan Kim ),이현경 ( Hyun Yung Lee ),박성규 ( Sung Kyu Park ),이병훈 ( Byung Hun Lee ),이정숙 ( Jeong Sook Lee ),김수진 ( Soo Jin Kim ),김동규 ( Dong Gyu Kim ),유인실 ( In 한국식생활문화학회 2015 韓國食生活文化學會誌 Vol.30 No.6

In recent years, consumers have become more interested in convenient lifestyles, leading to increased use of salted cabbages for preparation of kimchi. This study aimed to investigate the safety of heavy metals, pesticide residues, and foodborne pathogens in commercial salted cabbages in Seoul from August to November, 2014. The survey, which was conducted to determine whether or not salted cabbages were prepared under the highest sanitary conditions, showed that Seoulites are interested in purchasing hygienic and safe salted cabbages. The average amounts (range) of Pb and Cd found in 30 salted cabbage samples were 0.007 (0.000~0.063) mg/kg and 0.004 (0.000~0.012) mg/kg, respectively. The cabbages were analyzed for residues from 285 types of pesticides using the multiresidue method. Residues for pesticides were not detected. Major foodborne pathogens, specifically Escherichia coli, Salmonella spp., Listeria monocytogenes, Campylobacter jejuni, Staphylococcus aureus, Vibrio parahaemolyticus, Enterohemorrhagic Escherichia coli, Bacillus cereus, Clostridium perfringens and Norovirus, were also not detected.

고려시단(高麗詩壇)에 있어서의 두시수용(杜詩受容) 양상 고찰 - 임춘(林椿)의 두시평가(杜詩評價)를 중심으로 -

정선모 ( Sun Mo Jung ) 우리한문학회 2005 漢文學報 Vol.12 No.-

수직적 임금격차와 주가변동성의 상관관계

정선문 ( Sun-moon Jung ),김예원 ( Yewon Kim ) 한국회계학회 2022 회계저널 Vol.31 No.5

본 연구는 최고경영진-종업원의 수직적 임금격차와 기업의 주가변동성의 상관관계에 대해 살펴본다. 기업 내 수직적 임금격차는 토너먼트 경쟁을 통해 조직 혁신을 촉진하고 성과를 향상시키는 긍정적인 측면도 있으나, 경영진과 종업원 간에 대립적인 문화를 조성하고 노사관계를 불안정하게 만들어 기업 위험을 증가시킬 가능성이 존재한다. 수직적 임금격차의 영향에 대한 선행연구들은 기업의 성과에만 초점을 맞추어 온 바, 임금격차가 주가변동성 등 기업의 위험을 증가시킬 가능성에 대한 실증분석은 희소했다. 이에 본 연구는 국내 KOSPI 상장기업의 2013-2018년 기간의 자료를 사용하여 기업의 등기임원-종업원 간의 임금격차와 주가변동성의 관계를 분석하였다. 분석 결과, 임금격차가 큰 기업일수록 주가변동성이 높은 것으로 나타나 수직적 임금격차는 기업 내부의 갈등과 불안정성을 증가시켜 주가위험을 증가시킬 수 있다는 주장을 지지하였다. 또한, 재무보고의 불투명성이 클수록, 기업지배구조가 약할수록 임금격차와 주가변동성 간의 양의 상관관계를 완화하는 것으로 나타났다. 마지막으로 수직적 임금격차가 주가폭락위험과도 양의 상관관계를 지니는 것으로 나타나, 임금격차가 기업위험에 미치는 부정적 영향을 뒷받침한다. 본 연구는 수직적 임금격차와 기업성과의 관련성을 탐구한 선행연구를 확장하여 임금격차가 클수록 주가변동성으로 대리된 주가위험이 높아질 수 있음을 보여준 데 공헌점이 있다. Recent years have seen the conflicts within companies, largely driven by the executive-employee pay disparity. Early this year, for instance, Samsung Electronics’ labor union aired their grievance against their low pay compared to the skyrocketing pay for top management. Kakao’s stock price crashed after the top executives exercised a large stake of their stock options. The pay disparity fuels the anti-management sentiment, because average employees are questioning the adequacy of increasing executive pays. The current study examines the association between vertical pay disparity within firm and stock price risk. Although TMT-employee pay disparity may facilitate firm innovation and improve firm performance through tournament competition, it may increase firm risk by heightening internal competition and discouraging cooperation between TMT and employees. Prior studies have focused on firm performance, while remaining relatively silent on pay disparity’s effect on firm risk. We expand the literature by examining the relation between vertical pay disparity and firms’ stock price risk. Drawing from a sample of firms listed in KOSPI and KOSDAQ during 2013 - 2018, we find the positive association between TMT-employee pay disparity and stock return volatility. We measure the TMT-employee pay disparity with the ratio of the average TMT pay to the average employee pay. We measure the stock return volatility by the standard deviation of weekly stock returns during the subsequent year. Our finding that TMT-employee pay disparity is positively associated with the stock volatility is consistent with our prediction that pay disparity may deepen conflicts between TMT and employees, leading to unstable firm performance and increase in stock price risk. Our findings extend our understanding about the consequences of TMT-employee pay disparity, by suggesting that vertical pay disparity not only affect the average firm performance, but also the variance of firm performance. We also examine whether the financial reporting quality moderates the relation of pay disparity and return volatility. Prior studies suggest that poor financial reporting quality can increase the information asymmetry between TMT and employees, which may further discourage their cooperation. The empirical result indicates that the positive association between pay disparity and return volatility is more pronounced with poor financial reporting quality measured by discretionary accruals. The additional test result suggests that the internal conflict between the TMT and employees may be driven by the low level of information sharing between the groups. In additional analysis, we find that TMT-employee pay disparity is also positively associated with stock price crash risk, supporting the adverse effect of internal conflicts on firm risk. It indicates that TMT-employee pay disparity increases the probability of sudden and substantial drop in stock price, above and beyond the variance of stock prices. Collectively, our study throws an important implication for board of directors who aim to enhance internal coordination and reduce the firm risk. While TMT-employee pay disparity may positively affect the firm performance through tournament incentives (as prior studies found), the disparity may deteriorate the firm operation in terms of the average performance as well as the variability of firm performance.

『파한집』 판각에 있어서의 첨삭문제와 그 문학사적 의의 -『파한집』 편찬시기 및 편찬의도의 신고찰을 바탕으로-

정선모 ( Sun Mo Jung ) 우리한문학회 2004 漢文學報 Vol.10 No.-

요실금치료에 대한 임상적 연구

정선형(Sun Hyung Jung) 대한한방부인과학회 2000 大韓韓方婦人科學會誌 Vol.13 No.2

N/A N/A

여성관리자 비율이 지방자치단체 미수금 대손충당금 비율에 미치는 영향

정선문 ( Sun-moon Jung ),권세원 ( Sewon Kwon ) 한국회계학회 2021 회계저널 Vol.30 No.4

지방자치단체를 비롯한 공직에서 여성관리자(5급 이상)가 차지하는 비중은 꾸준히 증가하여, 2000년대 초반 지방자치단체 전체 관리직 중 5%에서 최근 18% 수준으로 상승하였다. 최근 들어 공공부문 양성평등 인사정책은 더욱 강화되어 공직 내 여성관리자의 비율은 향후 더욱 상승할 것으로 기대되는데 반해, 여성관리자 확대가 정부조직의 재무정보 품질에 미치는 영향을 탐구한 실증연구는 희소한 상황이다. 이에 본 연구는 지방자치단체의 여성관리자가 증가하는 현상이 발생주의 재무상태표상 대손충당금비율로 측정된 회계 투명성과 어떤 상관관계가 있는지 검증하는데 의의가 있다. 기업 내 여성관리자의 역할에 대한 선행연구들은 여성관리자가 조직 내 다양성을 증가시키고 강화된 감시 역할을 통해 재무정보의 품질을 향상시킨다는 긍정적 효과를 제시하였다. 그러나 공직에서의 여성관리자가 상당히 증가한데 비해 공직문화가 여성관리자를 포용하지 못하고 조직 내 갈등이 조성된다는 지적도 존재하는 만큼, 여성관리자의 증가가 지방자치단체의 회계투명성에 미치는 영향을 선험적으로 판단하기는 어렵다. 본 연구에서는 재무제표가 공시되기 시작한 2015부터 2018년까지의 기간 동안 224개 기초자치단체의 표본을 사용하여, 5급 이상의 여성관리자 비율과 미수세금 및 미수세외수입금의 대손충당금비율의 상관관계를 분석한다. 분석 결과, 여성관리자 비율이 높을수록 미수금의 대손충당금 비율로 측정된 회계투명성이 높은 것으로 나타나, 여성관리자가 기업 재무정보의 품질을 높인다는 선행연구와 일관된 결과를 발견했다. 또한, 육아휴직 비율로 측정된 여성친화적 조직문화에서 여성관리자의 재무정보 품질향상 효과가 두드러지는 것으로 나타났다. 이는 여성관리자의 양적인 증가와 함께 조직 내 성별다양성을 수용할 수 있는 문화적 환경이 뒷받침될 때 여성관리자의 업무효과성이 극대화될 수 있음을 암시한다. 한편 여성관리자 비율과 경상수지 및 프로그램원가비율 사이에는 유의한 상관관계가 나타나지 않아, 여성관리자의 긍정적 효과는 재무건전성이나 운영효율성보다는 회계투명성을 중심으로 나타남을 시사하였다. Since early 2000s, the proportion of female directors in Korean local governments has been on the steady rise. Female directors account for about 18% of total directors in local governments as of 2019 compared to 5% at early 2000. While gender quota policy puts forth female representation in government organizations, empirical evidence on the relation between female directors and accounting transparency has been scarce. Prior studies on female directors in for-profit firms suggest that female directors improve financial reporting quality by inviting critical perspectives and enhancing monitoring on information production process. On the other hand, Korean bureaucratic society is still unfriendly to female directors and thus undermines female directors’ capabilities. Hence, it is an empirical question whether the increasing female directors are positively or negatively associated with local governments’ accounting transparency. Drawing from a sample of 224 municipal governments from 2015 to 2018, the current study examines the relationship between female directors’ proportion and accounting transparency, proxied by bad debt allowances for receivables. The empirical results suggest that female directors’ proportion is positively associated with accounting transparency, supporting our hypothesis. We also find that the positive association between female directors and accounting transparency is more pronounced with female-friendly organizational culture, proxied by the number of parental leaves. In additional analyses, we further find that female directors have no significant association with fiscal sustainability and operational efficiency, implying that female directors’ contribution is prominent in accounting transparency.

자율 운항을 고려한 소형 무인선 프로토타입의 구성

정선종(Sun-Jong Jung),하솔(Sol Ha),차주환(Ju-Hwan Cha),이지환(Ji-Hwan Lee) (사)한국CDE학회 2022 한국CDE학회 논문집 Vol.27 No.4

This study proposed a method of manufacturing a small unmanned vessel with an autonomous navigation algorithm using open-source software. Since there are not many small unmanned vessels to experience autonomous navigation, a cheap and simple way to construct a vessel was proposed. The catamaran type hull, which has more restoring moment and storage space, was adopted to increase the stability of the hull and to consider the arrangement of the sensors and the control device inside. An autonomous navigation algorithm was developed using Robot Operating System (ROS), which is a famous open source software for controlling a robot. Before an actual navigation, a vessel makes a map as it navigates around by applying the simultaneous localization and mapping (SLAM) technique and LiDAR sensor. After creating the map, the vessel can move to any places in the map by using this map and LiDAR Sensor. If there are unexpected obstacles detected by LiDAR sensor, it can change its pre-scheduled path and avoid them by using the navigation algorithm. The vessel and developed algorithm were tested in a water tank confirmed.

MBTI를 활용한 집단상담 프로그램의 효과에 대한 메타분석: 학생을 중심으로

정선아(Sun-A Jung),강민수(Min Soo Kang) 한국발달지원학회 2023 발달지원연구 Vol.12 No.3

본 연구는 학생을 대상으로 국내에서 시행된 MBTI를 활용한 집단상담 프로그램의 효과에 관한 연구들의 동향을 개괄적으로 파악하고 그 효과를 분석하여 향후 연구를 위한 방향을 제시하기 위해 실시되었다. 자료 선정 기준에 따라 총19편의 논문에서 33개의 효과변인을 도출하여 메타분석을 실시하였다. 평균 효과크기(Hedges’ g)는 0.93(95% CI [0.71, 1.15])으로 큰 효과크기를 보였으며, 이질성은 I2=75.9%로 상당한 이질성을 나타냈다(Q=132.85, df=32, p<.001). 조절효과를 분석한 결과, 대상은 ‘대학생(g=1.11, CI [0.60, 1.62])’, 중재 회기 수는 ‘10회기 초과(g=1.26, CI [0.51, 2.01])’, 중재 시간은 ‘600분 이상 1,000분미만(g=1.16, CI [0.56,1.76])’, 중재 효과변인은 ‘진로(g=2.38, 95% CI [0.87, 3.40])’에서 가장 큰 효과크기를 나타냈다. 그러므로 학생을 대상으로 시행된 국내 MBTI를 활용한 집단상담 프로그램은 학생들의 자아, 적응 및 진로 관련 역량강화에 효과적인 프로그램이라고 사료된다. 본 연구는 초·중·고 및 대학생을 위한 맞춤형 MBTI 집단상담프로그램을 개발하고 적용하는데 필요한 근거기반 자료를 제공하였다는 데 의의가 있다. Purpose: This study used meta-analysis to analyze the effectiveness of Group Counseling Program using MBTI implemented in Korea for students. Methods: A total of 19 articles(33 effect variables) were selected according to the data selection criteria and a meta-analysis was performed. ‘meta and meta for’ package in R4.3.1 were used to analyze mean effect sizes, heterogeneity, the modulating effect and publication bias. Results: The mean effect size of Group Counseling Program using MBTI for students was large(Hedges’ g=0.93, 95% CI [0.71, 1.15]) and it showed considerable heterogeneity(I2=75.9%, Q=132.85, df=32, p<.001). Results of analyzing the moderating effect using meta-variance analysis and meta-regression analysis, the largest effect size was seen in exceeding 10 sessions(g=1.26, CI [0.51, 2.01]), 600-1000 minutes(g=1.16 CI [0.56, 1.76]), college students(g=1.11, CI [0.60, 1.62]) and career effect variable(g=2.38, 95% CI [0.87, 3.40]). Finally results of checking publication bias using a funnel plot, Egger’s regression test and trim-and-fill analysis, there was some tendency for publication bias. But it was not significant. Conclusion: Based on these results, The Group Counseling Program using MBTI for domestic students is considered an effective program in strengthening students' ego, adaptation, and career-related capabilities. This study is significant in that it provided evidence-based data needed to develop and apply a customized MBTI group counseling program for elementary, middle school, high school and college students.