A Study on the Relationship between Task Conflict and Citizenship Behaviors among Subordinates and Supervisors: Investigating the Moderation Effect of Leader-Member Exchange

최성원 사회혁신기업연구원 2023 혁신기업연구 Vol.8 No.1

This study investigates the effect of task conflict between subordinates and supervisors on the subordinates’ organizational citizenship behaviors (OCBI and OCBO) in the workplace. I propose that the quality of leader member exchange (LMX) performs a moderator role on the negative relationship between task conflict and OCBI and OCBO. A total of 310 subordinates and their 16 supervisors in a large healthcare organization participated in the study. Moderated structural equation analyses were conducted. The findings revealed that the negative relationship between task conflict and OCBI and OCBO was indeed moderated by LMX, and the type of moderation was amplifying moderation rather than buffering one. Implications and future research directions are discussed.

(주)산고을 사례

최성원,윤방섭 한국경영학회 1998 Korea Business Review Vol.2 No.1

(주)산고을 사례는 실제 기업의 사례를 모델로 하여 구성된 가상사례이다. (주)산고을은 고급 천연수액음료를 생산,판매하는 중견 음료업체이다. (주)산고을이 처한문제는 소비자로부터 주요 제품인 고로쇠 캔에 제품이상이 있다는 신고가 접수되면서 시작된다. 시간이 지나면서 고로쇠 캔의 제품 이상이 거듭하여 신고되거나 발견되면서 상황은 긴박하게 전개되고,이에 따라 (주)산고을의 경영진들은 긴급하게 모여대처 방안을 논의하고 있다.(주)산고을 사례를 통하여 참여자들은 본 사례가 제시한 상황 속에서 의사결정을실습하고,함께 분석함으로써,첫째,경영의사결정의 불확실성과 모호성을 체험하고,둘째,의사결정 과정에서 고려해야 할 핵심적인 문제의 본질을 이해하고,셋째,경영의사결정에 영향을 주는 여러 조직행동적 이슈들을 학습하여, 과적으로 의사결정능력을 개발하고,향상시킬 수 있을 것이다.

Cochlear Implantation after Bilateral Otic Capsule-Violating Temporal Bone Fractures

최성원,오세준,공수근,고의경 대한이비인후과학회 부산,울산,경남 지부회 2017 임상이비인후과 Vol.28 No.1

Temporal bone fractures through the otic capsule can cause profound sensorineural hearing loss. Patients deafened by bilateral temporal bone fractures may benefit from cochlear implantation. We report a case of a 56-year-old man with bilateral profound sensorineural hearing loss caused by otic capsule-violating bilateral temporal bone fractures due to severe head injury. The patient achieved satisfactory auditory rehabilitation after cochlear implantation. Imaging studies before cochlear implantation provided important information to enable the decision for the surgery and to determine the side. Through careful evaluation of the imaging studies, we believe cochlear implantation in such a patient can be a very effective method for auditory rehabilitation. The safe time period for ossification of the cochlea will be discussed. The benefit of preoperative repeated magnetic resonance imaging is highlighted.

구강암의 표적치료

최성원 생화학분자생물학회(구 한국생화학분자생물학회) 2012 생화학분자생물학회 소식 Vol.32 No.2

대학생의 표절행동 영향 요인에 관한 연구

최성원 학습자중심교과교육학회 2016 학습자중심교과교육연구 Vol.16 No.9

본 연구는 대학생들의 표절행동에 영향을 끼치는 주요 요인을 표절을 실제로 범한 학생들과 그렇지 않은 학생들 사이의 인식차 비교를 통해 살펴보고자 하였다. 금년(2016) 1학기 중 약 2개월 간 시행된 온라인 설문을 통해 연구 자료를 수집하였다. 국내 한 4년제 대학의 경상 전공 학생 115명이 익명으로 주관식 및 객관식 설문에 응답하였다. 다변량 분산분석을 활용한 양적 연구 결과, 실제로 표절행위를 범한 학생들은 그렇지 않은 학생들에 비해 수업 내 교수자의 표절 감독 실효성과 학교 표절방지 교육의 실용성, 학내 표절 훈육 정책의 효과성에 대해 현저히 부정적인 인식을 갖고 있었다. 또한 개방형 문항에 대한 질적 분석에서 학생들은 학내 표절에 대해 문제의식을 명확히 느끼고 있었으며 표절 방지 교육의 내실화와 강화 확대를 원하고 있었다. 하지만 징계나 처벌 위주의 정책에 대해선 다소 우려와 회의를 표명하기도하였다. 이에 학습자와 교수자 간의 공감과 소통을 바탕으로한 학내 표절 방지에의 주요 시사점과 향후 연구 방향에 관해 논의하였다.

Diagnostic Value of Ultrasound-Based Strain Imaging in Patients With Suspected Coronary Artery Disease

최성원,김태익,조경임,이현국,최재원,박승제,김현정,허정은 대한심장학회 2008 Korean Circulation Journal Vol.38 No.8

Background and Objectives: Strain imaging has already been shown to quantify regional myocardial function in both acute ischemic myocardium and infarcted myocardium. We proposed that strain imaging could differentiate deformation of normal and ischemic myocardium that are without regional wall motion abnormality, as assessed by conventional echocardiography. The aim of this study is to determine the diagnostic value of strain imaging for the detection and localization of coronary lesions in patients with chest pain, but they are without apparent wall motion abnormalities. Subjects and Methods: Strain imaging for advanced wall motion analysis was performed in 179 patients with suspicious stable angina (SA) and in 94 patients with suspicious acute coronary syndrome (ACS) prior to coronary angiography. All the patients had normal conventional wall motion scoring based on the standards of the American Society of Echocardiography. Longitudinal strain was measured in 3 apical views, and assessments of the strain value for individual segments with using an 18-segment division of the left ventricle were performed to determine the average strain value. Marked heterogeneity of strain was considered abnormal, and significant coronary artery disease was considered present if stenosis above 70% was noted on the quantitative angiography. Results: Eighty (78%) of the 103 patients with SA and 18 (56%) of the 32 patients with ACS and who showed constant systolic strain throughout the left ventricular wall had normal or minimal coronary lesions. Fiftyone (67%) of the 76 patients with SA and 53 (85%) of the 62 patients with ACS and marked heterogeneity of strain had angiographically significant coronary stenosis. The receiver-operating characteristic (ROC) analysis of the peak systolic strain yielded that the ROC-area of peak systolic strain for the left anterior descending artery territory was 0.79 (95% CI 0.72-0.84), this was 0.87 (95% CI 0.79-0.91) for the left circumflex artery territory and 0.89 (95% CI 0.79-0.93) for the right coronary artery territory. Conclusion: Ultrasound-based strain imaging demonstrates a strong correlation with coronary angiography and it has potential as a noninvasive diagnostic tool for detecting coronary artery stenosis in patients with chest pain, but who are without apparent wall motion abnormalities on conventional echocardiography. Background and Objectives: Strain imaging has already been shown to quantify regional myocardial function in both acute ischemic myocardium and infarcted myocardium. We proposed that strain imaging could differentiate deformation of normal and ischemic myocardium that are without regional wall motion abnormality, as assessed by conventional echocardiography. The aim of this study is to determine the diagnostic value of strain imaging for the detection and localization of coronary lesions in patients with chest pain, but they are without apparent wall motion abnormalities. Subjects and Methods: Strain imaging for advanced wall motion analysis was performed in 179 patients with suspicious stable angina (SA) and in 94 patients with suspicious acute coronary syndrome (ACS) prior to coronary angiography. All the patients had normal conventional wall motion scoring based on the standards of the American Society of Echocardiography. Longitudinal strain was measured in 3 apical views, and assessments of the strain value for individual segments with using an 18-segment division of the left ventricle were performed to determine the average strain value. Marked heterogeneity of strain was considered abnormal, and significant coronary artery disease was considered present if stenosis above 70% was noted on the quantitative angiography. Results: Eighty (78%) of the 103 patients with SA and 18 (56%) of the 32 patients with ACS and who showed constant systolic strain throughout the left ventricular wall had normal or minimal coronary lesions. Fiftyone (67%) of the 76 patients with SA and 53 (85%) of the 62 patients with ACS and marked heterogeneity of strain had angiographically significant coronary stenosis. The receiver-operating characteristic (ROC) analysis of the peak systolic strain yielded that the ROC-area of peak systolic strain for the left anterior descending artery territory was 0.79 (95% CI 0.72-0.84), this was 0.87 (95% CI 0.79-0.91) for the left circumflex artery territory and 0.89 (95% CI 0.79-0.93) for the right coronary artery territory. Conclusion: Ultrasound-based strain imaging demonstrates a strong correlation with coronary angiography and it has potential as a noninvasive diagnostic tool for detecting coronary artery stenosis in patients with chest pain, but who are without apparent wall motion abnormalities on conventional echocardiography.

비후성 반흔 각질세포와 정상 각질세포의 유전자 비교분석

최성원,정호윤,임영국,김훈남,오지원,김문규,전세화,홍용택,Choi, Sung-Won,Chung, Ho-Yun,Lim, Young-Kook,Kim, Hoon-Nam,Oh, Ji-Won,Kim, Moon-Kyu,Jeon, Sae-Hwa,Hong, Yong-Taek 대한성형외과학회 2010 Archives of Plastic Surgery Vol.37 No.4

Purpose: There is no clear evidence of the original cause of hypertrophic scar, and the effective method of treatment is not yet established. Recently the steps of searching in gene and molecular level are proceeding. we are trying to recognize the difference between keratinocytes of hypertrophic scar and normal skin. Then we do support the comprehension of the scar formation mechanism and scar management. Methods: Total RNAs were extracted from cultured keratinocytes from 4 hypertrophic scars and normal skins. The cDNA chips were prepared. A total of 3063 cDNAs from human cDNA library were arrayed. And the scanning data were analyzed. Results: On microarray, heat shock protein, pyruvate kinase, tumor rejection antigen were more than 2 fold intensity genes. Among them, heat shock 70 kd protein showed the strongest intensity difference. Conclusion: In this study, it can be concluded that heat shock proteins play an important role in the process of wound healing and scar formation. This study provides basic biologic information for scar research. The new way of the prevention and treatment of scar formation would be introduced with further investigations.

Epidermis Proliferative Effect of the Panax ginseng Ginsenoside Rb2

최성원 대한약학회 2002 Archives of Pharmacal Research Vol.25 No.1

Evaluation of Ataxia in Mild Ischemic Stroke Patients Using the Scale for the Assessment and Rating of Ataxia (SARA)

최성원,한나미,정상훈,김현동,엄미자,배현우 대한재활의학회 2018 Annals of Rehabilitation Medicine Vol.42 No.3

Objective To demonstrate the utility of Scale for the Assessment and Rating of Ataxia (SARA) for evaluation of posterior circulation-related features in patients with mild stroke. Methods Forty-five subjects, diagnosed with acute infarction in the cerebellum, basis pontis, thalamus, corona radiata, posterior limb of internal capsule, and their National Institutes of Health Stroke Scale (NIHSS) scores ≤5 were enrolled. SARA scores were graded by the cut-off value of severity in dependency of activities of daily living (ADL). SARA, Berg Balance Scale (BBS), Timed Up-and-Go (TUG), and Trunk Control Test (TCT) were correlated in regression analysis with the modified Rankin Scale (mRS) at discharge. Correlation between SARA and other tools was analyzed. Patients were divided based on mRS at admission (group A, mRS 0–2; group B, mRS 3–5). Scores between the two groups were compared. Results Among the subjects, 48.9% (22/45) scored above 5.5 on SARA, and even 11.1% (5/45) scored higher than 14.25, which is the cut-off value of ‘severe dependency’ in ADL. SARA showed significant value for prediction of mRS at discharge. SARA was correlated with BBS (r=-0.946, p<0.001), TUG (r=-0.584, p<0.001), and TCT (r=-0.799, p<0.001). The SARA, BBS, TUG, and TCT scores between were lower in group B than in group A patients. SARA as well as BBS, TUG, and TCT reflect the functional severity of all patients. Conclusion SARA is a complementary tool for evaluation of the severity of ataxia in mild stroke patients with features of posterior circulation.

다층신경망을 이용한 장래 생활폐기물 발생량 예측 연구 : B시 사례연구

최성원,김한준 한국폐기물자원순환학회 2020 한국폐기물자원순환학회지 Vol.37 No.1

In order to establish an efficient waste management plan, it is essential to forecast waste generation accurately, andsuch estimates become the basis for optimizing and developing the existing waste management infrastructure. The unitgeneration rate method used to estimate waste generation is widely used because it is convenient to apply. However,because it has various problems, methods for forecasting waste generation must be improved. Machine learning techniquesare being used to forecast prices and demand in various areas, such as economy and industrial engineering. This studyapplies those techniques for predicting waste generation and compares the results with those obtained using existingmethodologies. In this study, 80% (January 2013 to December 2016) of the data were used for training purposes, and20% (January 2017 to December 2017) were used for testing. The results of five hundred iterations show that the minimumvalue of 515.4 ton/day, the one-quartile value of 573.6 ton/day, and the median value of 590.4 ton/day in 2020, aresignificantly different from the results obtained using the unit generation rate method (547.7 ton/day). It was also shownthat future waste generation will continue to increase despite a decrease in population, and then it converges on 614.9ton/day in 2030. In other words, the model that was applied in this study is more suitable for short-term forecasts thanfor long-term forecasts. In addition, results of this study suggest that future increases in waste generation would be dueto changes in the population structure and the developing delivery service. 없음