완성품생산자와 부품공급자의 품질게임 : 품질계약내용 및 품질관련변수가 품질수준에 미치는 영향 the effect of the contract terms and the quality related variables on product quality

김남영 한국경영과학회 2002 韓國經營科學會誌 Vol.27 No.1

This paper examines the effect of the producer-supplier quality contract parameters and the magnitude of the quality related variables on the quality of the final products. Our analysis focuses on the parties' equilibrium behavior in a quality game environment where the supplier should choose among the two production technologies, one requiring high cost but producing high quality parts and the other requiring low cost but producing low quality parts and where the producer should decide whether to do the inspection of the parts. The game framework is employed to depict the potential conflicts existing between the producer and the supplier because the producer can not observe the supplier's choice and each party wants the other to bear the cost of producing high quality products. In our model, we specifically consider the competitive situation where the producer competes with a firm producing the same product. We employ the market share attraction model to incorporate the competitive situation and completely characterize the equilibrium by using the Nash equilibrium concept for the game solution. Our results show that the equilibrium depends on the contract terms and the magnitude of the quality related variables. Compared to the non-competitive situation, the probability of producer's inspection and the probability of supplier's choosing the high quality technology increases in a competitive situation. This is true even when the competitor's quality is lower than the producer's lowest. As a result, the quality of the final product increases in a competitive situation. And as the failure cost borne by the supplier increases, the probability of choosing the high quality technology increases and probability of inspection decreases. The net effect of this results in the decrease of the final product quality.

나의 장례설교 : 보기만 해도 좋은 곳

김남영 기독교대한성결교회 활천사 2017 활천 Vol.759 No.2

제약바이오산업의 경영효율성 및 생산성 분석 연구

김남영,우소희,김범수 한국콘텐츠학회 2024 한국콘텐츠학회논문지 Vol.24 No.4

This study analyzes the efficiency and productivity in Biopharmaceutical industry companies in the period from 2017 to 2022, using DEA analysis and the Malmquist productivity index. The characteristics of the Biopharmaceutical industry were considered, leading to a distinction between research efficiency and management efficiency. The analysis also compared efficiency and productivity before and after COVID-19, as well as between the KOSPI and KOSDAQ markets. The analysis revealed several key findings. First, the average research efficiency was observed to be 0.19, lower than the average management efficiency of 0.50. Second, the geometric mean of the Malmquist productivity index during the analysis period showed an increase in productivity, with values of 1.043 for research efficiency and 1.049 for management efficiency after COVID-19. Particularly, a significant increase in productivity was observed in the year 2020 when COVID-19 occurred. Third, during the COVID-19 period, there was no statistically significant difference in efficiency between the KOSPI and KOSDAQ markets, confirmed through the Mann-Whitney test. Based on these study findings, it is suggested that companies with lower efficiency can refer to size revenue and benchmark groups to improve efficiency. The data on efficiency and productivity indicators for each company can also serve as reference material for strategic decision-making to enhance efficiency, especially in pandemic situations like COVID-19.

밀리미터파 SiGe HBT 소자 기술

김남영 한국전기전자재료학회 1999 전기전자재료 Vol.12 No.8

스포츠 사회적 환경요인이 발레(BALLET) 대중화에 미치는 영향 분석

김남영,지삼업 한국스포츠리서치 2004 한국 스포츠 리서치 Vol.15 No.6

This study shows the social environment factors in sports have an effect on a wide spread ballet. There are direct suggestion to broaden a wide spread ballet in Korea which is affected with the social environment factors. Therefore, it classifies the social environment factors into the mass media factors, a cultural and politic factors, industrial factors and programing factors. First, the mass media decrease the public interests and understanding. Second, there is a need to fund from Government and gather a social function in cultural policy. Third, it isn't easy for an awareness of noble culture to access people directly. Four, industrial factor lacks in a strategic marketing : the lacksofa corps de ballet, an attracting tourist and a service. Five, a few people can afford this kindofculture, people are needed a help Government fund it and put it in the education policy.

A Least Squares Approach to Escalator Algorithms for Adaptive Filtering

김남영 한국전자통신연구원 2006 ETRI Journal Vol.28 No.2

In this paper, we introduce an escalator (ESC) algorithm based on the least squares (LS) criterion. The proposed algorithm is relatively insensitive to the eigenvalue spread ratio (ESR) of an input signal and has a faster convergence speed than the conventional ESC algorithms. This algorithm exploits the fast adaptation ability of least squares methods and the orthogonalization property of the ESC structure. From the simulation results, the proposed algorithm shows superior convergence performance.

LC-MS/MS를 이용한 농산물 중 Fluoroimide의 잔류농약 분석법 개선

김남영,박은지,심재한,이정미,정용현,오재호,Kim, Nam Young,Park, Eun-Ji,Shim, Jae-Han,Lee, Jung Mi,Jung, Yong Hyun,Oh, Jae-Ho 한국식품위생안전성학회 2021 한국식품위생안전성학회지 Vol.36 No.3

Fluoroimide는 감과 감자의 둥근무늬낙엽병과 역병을 억제하는데 효과가있는 살진균제로서, 이전 사용되었던 fluoroimide의 시험법은 전처리시 발암물질인 benzene을 사용하는 문제가 있었으며, 복잡한 시험법으로 인해 시간이 오래걸리고 효율이 떨어지는 단점이 있었다. 또한, fluoroimide의 특성상 산성에서 안정한 편이므로 전처리 시 이를 고려해야 하는 문제가 있었으며, PLS시행에 따라 기존의 정량한계인 0.05 mg/kg보다 낮은 정량한계 요구로 인해 fluoroimide에 대한 새로운 전처리방법이 필요하였다. Fluoroimide가 산성에서 안정한 특성을 고려하여, 추출 시 4N의 염산을 사용하였고 용매는 acetic acid가 포함된 acetonitrile을 사용하였으며, MgSO₄와 NaCl을 통해 추출하였다. 정제는 C₁₈ (Octadecylsilane)과 GCB (graphitized carbon black)를 첨가하여 정제하였으며, 기기분석은 LC-MS/MS로 분석하였다. 대표농산물 5종(현미, 감자, 대두, 감귤, 고추)을 대상으로 정량한계(0.01 mg/kg), 정량한계 10배(0.1 mg/kg), 정량한계 50배(0.5 mg/kg)의 수준으로 회수율 실험을 5반복 실시하였으며, 그 결과는 농산물 5종에서 85.7-106.9%의 회수율을 확인하였으며, 분석오차는 15.6% 이하의 결과를 보여, 국제식품 규격위원회 가이드라인의 잔류농약 분석 기준 및 '식품등 시험법 마련 표준절차에 관한 가이드라인(2016)'에 부합하였다. 상기의 결과를 통해 개선한 fluoroimide의 시험법은 benzene을 대체해 실험자의 안전성을 확보하였고, QuEChERS법을 적용하여 효율을 높여, 안전관리에 대한 공정시험법으로서 활용가능할 것으로 사료된다. Fluoroimide is a fungicide and is also used as a pesticide for persimmons and potatoes. The established fluoroimide pesticide analysis method takes a long time to perform and uses benzene, a carcinogen. In addition, a lower limit of quantification is required due to enforcement of the Positive List System. Therefore, this study aimed to improve the analysis method for residual fluoroimide to resolve the problems associated with the current method. The analytical method was improved with reference to the increased stability of fluoroimide under acidic conditions. Fluoroimide was extracted under acidic conditions by hydrogen chloride (4 N) and acetic acid. MgSO₄ and NaCl were used with acetonitrile. C₁₈ (octadecylsilane) 500 mg and graphitized carbon black 40 mg were used in the purification process. The experiment was conducted with agricultural products (hulled rice, potato, soybean, mandarin, green pepper), and liquid chromatograph-tandem mass spectrometry was used for the instrumental analysis. Recovery of fluoroimide was 85.7-106.9% with relative standard deviations (RSDs) of less than 15.6%. This study reports an improved method for the analysis of fluoroimide that might contribute to safety by substituting the use of benzene, a harmful solvent. Furthermore, the use of QuEChERS increased the efficiency of the improved method. Finally, this research confirmed the precise limit of quantification and these results could be used to improve the analysis of other residual pesticides in agricultural products.

도시지역 네트워크형 지하도로의 환기방재대책

김남영,조종복,Kim, Nam-Yeong,Jo, Jong-Bok 한국터널지하공간학회 2017 자연, 터널 그리고 지하공간 Vol.19 No.2

도로터널의 방재시설

김남영,Kim Nam-Yeong 대한설비공학회 2006 설비저널 Vol.35 No.8

자율 드론을 활용한 인공지능 기반 교통 순찰 솔루션

김남영,김준영,이규만 제어로봇시스템학회 2022 제어로봇시스템학회 국내학술대회 논문집 Vol.2022 No.6