자동차용 도어 닫힘 성능 예측

문형일(Hyung-il Moon),민병권(Byung-Kwon Min),오정석(Jeong Seok Oh),박준철(Joon Suk Park),이성훈(Seung Hoon Lee),김헌영(Heon Young Kim) 한국자동차공학회 2008 한국자동차공학회 춘 추계 학술대회 논문집 Vol.- No.-

사회적기업의 사회적 목적 실현성과에 영향을 미치는 요인

문형구(Moon, Hyung-Ku),홍정화(Hong, Jung-Hwa) 글로벌경영학회 2014 글로벌경영학회지 Vol.11 No.3

본 연구에서는 오늘날 사회적 경제(social economy)의 실질적인 주체로서 사회적 목표를 우선적 으로 추구하는 사회적기업의 목적(사회적기업 육성법 제1조)과 정의(동 법 제2조)에 근거하여 ‘사 회서비스 제공’, ‘일자리 제공’, ‘지역사회 공헌’ 등 ‘사회적 목적 실현성과’에 중요한 영향을 미치는 요인들을 연구하였다. 본 연구의 목적을 달성하기 위하여 전국의 사회적기업과 예비사회적기 업을 대상으로 인터넷과 우편 등을 활용하여 설문지 약 1,700부 배부하여 회수된 설문지 224부중 응답이 불성실하거나 연구대상자가 아닌 9부를 제외하고 215부를 통계적 분석에 이용하였다본 연구의 결과를 요약하면 다음과 같다. 첫째, 정부·지방자치단체 요인이 사회적 목적 실현성과에 미치는 영향력을 검증한 결과, 그 영향 력의 크기는 경영지원, 재정지원, 공공기관 우선구매 순으로 나타났다. 또한 재정지원과 경영지원은 통계적으로 유의한 영향을 미친 반면 공공기관 우선구매 통계적으로 유의한 영향이 없는 것으로 나타났다. 둘째. 전략적 요인이 사회적 목적 실현성과에 미치는 영향을 검증한 결과, 그 영향력의 크기는 유급근로자 고용, 의사결정구조, 자율경영공시 수준 순으로 나타났다. 의사결정구조와 유급근로자 고용은 통계적으로 유의한 영향을 미친 반면 자율경영공시 수준은 영향이 없는 것으로 나타났다. 셋째, 조세지원제도 요인이 사회적 목적 실현성과에 미치는 영향을 검증한 결과, 그영향력의 크기는 기부금 손금산입, 법인세 감면, 지방세 감면 순으로 나타났다. 또한 법인세 감면과 기부금 손금산입은 통계적으로 유의한 영향을 미친 반면 지방세 감면은 영향이 없는 것으로 나타났다. This study investigates the factors having significant influences on realization of the social purposes. To achieve the object of this study, questionnaires method was used. 1700 questionnaires were distributed and 215 copies were used for statistical analysis out of 224 collected survey questions. 9 questionnaires were ruled out owing to unreliable response. For basic analysis, this paper performed frequency analysis, descriptive statistics quantity, reliability analysis, significant analysis, and correlation analysis. As for hypothesis test method, multiple regression analysis was performed. The results of this study are as below. First, as a result of analysis for the central and local government factor effecting on realization of social purpose, the order of most influencing components was business support, financial aid, and public institution preferential purchase. Second, in consequence of analysis for the strategic factor effecting on realization of social purpose, the order of most influencing components was paid worker employment, decision making structure, and voluntary public announcement. Third, as a result of verification for the tax support system factor influencing on realization of social purpose, the order of most effecting elements was donation deduction, corporate tax reduction, and local tax reduction.

자동차용 방진고무의 찢김시험 및 찢김에너지 정식화

문형일(Hyung-il Moon),김헌영(Heon Young Kim),김민건(Min Gun Kim),김호(Ho Kim) 대한기계학회 2012 大韓機械學會論文集A Vol.36 No.12

일반적인 고무 부품의 해석적 피로 수명 예측은 다양한 피로시험 결과를 바탕으로 정의되는 피로 수명식이 사용된다. 그러나, 이와 같은 방식은 피로 시험에 사용되는 비용적, 시간적인 문제로 인해 설계과정에서 매우 제한적으로 사용된다. 더욱이, 고무재료의 비규격화 및 임의적인 특성변화가 피로시험 결과의 데이터베이스화를 어렵게 만든다. 본 논문에서는 찢김에너지를 이용한 또다른 피로수명 예측 방식을 제안하였다. 자동차용 방진고무들에 대한 동적, 정적 찢김시험 및 복잡한 형상을 갖는 고무 부품의 찢김에너지를 계산하기 위하여 가상 결함을 고려한 유한요소 정식화를 수행하였다. 제안된 방법을 사용하여, 자동차용 모터 마운트의 피로 수명을 예측해 보았고, 실제 수명과 예측된 수명을 비교하여신뢰성을 검증해 보았다. A commonly analytical estimation of fatigue life on rubber components is using fatigue life equation based on various fatigue test results. However, such method has very restricted applicability in actual designing processes because performing fatigue tests requires a lot of time and money. In addition, non-standard rubber materials and their randomness make it hard to make databases. In this paper, the other fatigue life estimation method using tearing energy was suggested. We performed static and dynamic tearing test about automotive vibration rubber materials and a finite element formulation using a virtual crack to calculate the tearing energy of rubber components with complicated shapes. To using the suggested method, fatigue life of an automotive motor mount has been estimated and verified the reliability of this method by using comparison between the estimated values and the actual fatigue life.

작업장에서의 n-부틸 글리시딜 에테르에 대한 건강 위험성 평가

문형일 ( Hyung Il Moon ),최현일 ( Hyeon Il Choi ),신새미 ( Sae Mi Sin ),변상훈 ( Sang Hoon Byeon ) 한국산업위생학회 2013 한국산업보건학회지 Vol.23 No.1

OObbjjeeccttiivveess: This study was conducted to evaluate the health risk of workers exposed to butyl glycidyl ether to prevent them from developing occupational diseases. MMeetthhooddss: The workplaces that coat floor with epoxy were selected and the samples were collected and analyzed with NIOSH 1616 Method. We calculate workplace reference concentration using with NOAEL estimated by the study of Anderson et al. in 1978. Risk was calculated by the ratio of exposure to workplace reference concentration. Monte-Carlo simulation was performed to derivate the median, cumulative 90%, and cumulative 95% value by using Crystal Ball. RReessuullttss: Butyl glycidyl ether is a skin, eye irritator and can result in central nervous system depression, allergic reaction. NOAEL was 38 ppm and workplace reference concentration was calculated as 0.73 ppm corrected with uncertainty factors. Geometric mean was 1.152 ppm and geometric standard deviation was 1.522 by the workplace environment measurement. The median, cumulative 90%, and cumulative 95% value of risk were calculated as 1.617, 1.934, and 2.092, respectively. CCoonncclluussiioonnss: Not only cumulative 90% and cumulative 95% value but also the median of risk is higher than 1.0 by the risk characterization, so it can do a lot of harm to workers. Therefore, the process of derivating workplace reference concentration and the appropriacy of the uncertainty factors should be re-examined.

현대 한국인의 치아 계측치를 이용한 남녀판별함수 분석

문형순(Hyung Soon Moon),허경석(Kyung Suk Hu),박선주(Sun Joo Park),김희진(Hee Jim Kim) 대한체질인류학회 2002 해부·생물인류학 (Anat Biol Anthropol) Vol.15 No.1

간추림 사람뼈를 발굴했을 때 치아는 물리적, 화학적 특성상 가장 잘 남아있어 남녀 구분에 도움을 줄 수 있다. 이에 성별이 확실한 성인 석고모영 215개(남자 109개, 여자 106개)와 시신 166구(남자 127구, 여자 39구)를 대상으로 치아머리의 안쪽먼쪽너비 (mesiodistal diameter of the crown)와 얼굴쪽혀쪽너비 (faciolingual diameter of the crown)를 계측하였다. 이들 중 통계적으로 유의한 계측값만을 이용하여 판별분석을 통한 판별함수를 도출하고 이를 검정하였다. 판별함수는 고고학 유적지에서 발굴되는 사람뼈에 적용하기 위하여 독립변수를 여러 가지 조합으로 하여 51개의 함수를 얻었다. 이 중 통계적으로 유용한 함수는 34개로 64.5-89.8% 의 판별력을 보였고, 17개의 함수는 Box’s M값과 Wilks’ Lambda 값에 의해 판별분석에서 제외되었다. 이 중 남녀판별력과 전체 판별력이 높은 8개의 함수를 검정해 본 결과 62.8-84.6% 의 판별력을 얻었다. 이들 함수 중 가장 높은 판별력 을 보여주는 것은 아래턱 치아 전체를 이용한 경우이고, 아래턱 송곳니만을 이용한 항수는 가장 많은 재료에 적용시킬 수 있어 그 유용성이 높다 할 수 있다.

자동차용 모터 마운트의 내구수명 예측

문형일(Hyung-il Moon),안정호(Jung ho An),김헌영(Heon Young Kim) 한국자동차공학회 2011 한국자동차공학회 학술대회 및 전시회 Vol.2011 No.11

The demand to acquire and improve durability performance has steadily risen lately in rubber components design due to a demand for advanced emotional characteristics and the use of unitized or module components. In designing, an analytical estimation is the most effective way to improve endurance life. Existing methods of analytical estimation have mainly used a formula of endurance life obtained from fatigue test data. However, due to costs and time required for fatigue testing, as well as randomness of rubber materials, the rate at which such formula is used remains insignificant. In this paper, we describe endurance life estimation of an automotive motor mount using only the results from a relatively simple tearing test. For this, we performed tearing tests on natural rubber of various hardness used for manufacture of vibroisolating mount, and compared tearing factors in static and dynamic states. Also, using static deformation analysis and the tearing test data, we estimated endurance life of the motor mount and tested reliability of the proposed method by comparing the estimated values with actual test results.

그물모시대의 플라보노이드 성분

문형인(Hyung In Moon),노종화(Jong Hwa Roh),이강노(Kang Ro Lee),지옥표(Ok Pyo Zee) 대한약학회 1999 약학회지 Vol.43 No.1

Four flavonoids were isolated from Adenophora remotiflora var. hirticalyx. Their structures were identified as quercetin (1), kaempferol (2), luteolin (3), pectolinarigenin-7-O-beta-glucoopyranoside(4) on the basis of spectral data.

볼트 체결 및 풀림 해석 기술 개발

문형일(Hyung-il Moon),박형석(Hyoung seok Park),백승진(Seung Jin Baek),김재형(Jea Hyung Kim) 한국자동차공학회 2019 한국자동차공학회 학술대회 및 전시회 Vol.2019 No.11

자감초탕(炙甘草湯)이 재관류장치하에서 흰쥐의 적출심장(摘出心臟)에 미치는 영향(影響)

문형권,문상관,고창남,조기호,김영석,배형섭,이경섭,Moon, Hyung-Kun,Moon, Sang-Kwan,Ko, Chang-Nam,Cho, Ki-Ho,Kim, Young-Suk,Bae, Hyung-Sup,Lee, Kyung-Sup 대한한의학회 1997 대한한의학회지 Vol.18 No.2

Background : The stenosis of the coronary artery results in a decrease in the myocardial oxygen supply, ischemia and infarction. Jakamchotang as a drug of liquid is generally regarded to have the effect of arrythmia, palpitation from Heart disease and promoting the flow of Ki and Blood. Methods : The purpose of this experimental study is to find whether Jakamchotang is effective or not in curing ischemia in isolated perfused rat hearts and to measure the degree of its curing effect. In this study, under the Langendorff apparatus, ischemia was induced in isolated Sprague-Dawley rat hearts by ceasing the perfusion for 20 minites. Subjects were divided into a normal saline orally administered group(control group), an Jakamchotang orally 100mg administered group (sample A), an Jakamchotang orally 300mg administered group (sample B), and an Jakamchotang injection perfused group(sample C). The heart rates, left ventricular pressure, myocardial dilatation/contraction, cardiac perfusion flow and cardiac ezyme(LDH, CPK) of the four group were measured and compared in order to assess the influence of Jakamchotang on isolated perfused rat hearts recovering abillity from ischemia and infarction. results : 1. Heart rates were increased significantly in Jakamchotang orally 100mg administered group, Jakamchotang orally 300mg administered group and Jakamchotang injection perfused group on perfusion and reperfusion(p<0.01). 2. Left ventricular pressure were increased significantly in Jakamchotang orally 100mg administered group and 300mg administered and Jakamchotang injection perfused group(p<0.01) in comparison with control group on perfusion, but every group did not significant on reperfusion. 3. While there were no differances in each group's abillities of myocardial dilatation, the ability of myocardial constriction of Jakamchotang 100mg administered group only on perfusion was significantly greater than that of control group(p<0.05). 4. CBF was no significant on perfusion and reperfusion in comparison with control group(N.S.) 5. LDH was not significantly decreased on perfusion, but significactly decreased in Jakamchotang orally 100mg administered group, Jakamchotang orally 300mg administered group on reperfusion. 6. CPK was significantly decreased in Jakamchotang orally 100mg administered group, 300mg administered and Jakamchotang injection perfused group on perfusion(p<0.01), but was not significantly in Jakamchotang 300mg administered group only on reperfusion(P<0.05) Conclusion : According to the result above, Jakamchotang have an effect to recover in the isolated perfused rat hearts. Especially, the effect of Jakamchotang in orally adminstered group is greater than that of Jakamchotang injection perfused group on preischemia. The followings are the two important results of this study: First, the effect of Jakamchotang used traditionally on heart disease was proved statistcally under the Langendorff apparatus. Second, on the basis of this study, the effect of other type medications on myocardial ischemia can be evaluted in further studies.

1:1 실부재 Mock-up Test를 통한 고강도 콘크리트의 역학적 특성에 관한 연구

문형재(Moon, Hyung Jae),석원균(Seok, Won Kyun),박순전(Park, Soon Jeon),이주호(Lee Joo Ho) 한국콘크리트학회 2008 한국콘크리트학회 학술대회 논문집 Vol.2008 No.5