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김범진,김순천,공남식,노승만,김진철,박영일 한국공업화학회 2015 한국공업화학회 연구논문 초록집 Vol.2015 No.0
Imidazole 기반의 촉진제는 epoxy 기반의 코팅, 접착제 등에 범용적으로 사용되는 재료이다. 최근 공정 효율화를 위해 빠른 경화가 되는 신규 경화 촉진제 개발이 산업계에서 이슈화되고 있고 imidazole 기반의 촉진제는 보관 안정성 떨어지므로 일액형 코팅 또는 접착제 개발에 한계가 있다. 따라서 본 연구에서는 imidazole 의 dimer system 을 적용한 신규 촉진제를 개발하였고, 그 재료에 대한 경화 온도 및 특성, 보관 안정성에 대한 다양한 분석을 진행하였으며 그에 대한 토의를 하고자한다.
호텔과 여행사의 특성에 따른 관계가파트너십 성과에 미치는 영향
김범진 경남대학교 산업경영연구소 2014 지역산업연구 Vol.37 No.3
본 연구에서는 호텔과 여행사의 특성에 따른 관계를 파악하고, 파트너십 성과에 미치는 영향관계를 분석함으로써 호텔과 여행사 관계특성을 파악하고, 호텔과 여행사의 발전을 위한 기준과 운영전략을 제시하고자 하였다. 연구의 대상은 호텔과 거래를 담당하고 있는 국내 여행사 직원으로 규정하였고, 설문기간은2013년 11월 25일부터 12월 17일까지 실시하였다. 연구결과 및 시사점은 첫째, 호텔과 여행사의 파트너십 성과를 극대화하기 위해서는 호텔 등급별로 차별화된 전략이 필요한 것으로 제시되었다. 둘째, 호텔과 여행사의 매출과 수익을 위해서는 호텔 형태별로 차별화된 전략이 필요한 것으로제시되었다. The purpose of this study is to find the relationship of the impact of partnership performancebetween a hotel and a travel agency. A total of 300 surveys were collected and 274 surveys were used as valid specimen. The timeperiod of the survey was from November 25, 2013 to December 17, 2013. The important points found from the results of the analysis are as follows. First, it was presented that the frequency of transaction and the period of transaction wasimportant to effectively maximize the relationship between the hotel and the travel agencySecond, to increase the sales and profit of the hotel and travel agency, it is presented that astrategy is needed for each class and structure of hotel. Third, according to the class and the structure of the hotel, the importance and themaintenance of the long-term relationship between the hotel and the travel agency is different.
다구찌법을 이용한 정면 충돌 센싱 성능 향상에 관한 연구
김범진,이승근,배한일 한국자동차공학회 2008 한국 자동차공학회논문집 Vol.16 No.2
The purpose of the current paper is to optimize the FIS position in order to prevent airbag from malfunctioning due to inaccuracy of airbag sensibility during frontal and offset vehicle collision at various velocities. In this paper, the frontal and offset crash models using finite elements are firstly constructed for the 12mile frontal versus 25mile offset crash, and 18mile frontal crash versus 40mile offset crash. Then, the parameter design scheme of Taguchi method is used to obtain the robust optimal position of the FIS. As a result, the robust optimal position of the FIS which is installed in the carrier upper member of FEM is suggested considering the noise effect such as the vehicle weight, strength and stiffness of front side member and bumper back beam. Moreover, it is shown that discrimination of crash pulse as regards the various frontal crash modes above mentioned is enhanced dramatically for the air bag deployment. Current paper will contribute in various technologies - minimize cost and the number of real tests for airbag sensing, reducing the target period for regulation and product development, and prevention for PL(Product Liability) - providing solution for uncertainty of airbag activation under various collision situations.
김범진,천원석,오형철,김정욱,박정덕,김재규 대한의학회 2011 Journal of Korean medical science Vol.26 No.5
Prevalence of erosive esophagitis (EE) has been increasing in Korea. The purpose of this study was to estimate prevalence of EE among low socioeconomic population in Korea and to investigate risk factors for EE. We reviewed the medical records of 7,278 subjects who were examined by upper endoscopy in the Korean National Cancer Screening Program at Chung-Ang University Yong-san Hospital from March 2003 to March 2008. The study population included subjects ≥ 40 yr of age who were Medicaid recipients and beneficiaries in the National Health Insurance Corporation. Multivariate analysis was used to determine risk factors for EE. Prevalence of EE was 6.7% (486 /7,278). According to the LA classification system, LA-A in 344 subjects, LA-B in 135 subjects, and LA-C and D in 7subjects. In multivariate analysis, age ≥ 60 yr, male sex, BMI ≥ 25, current smoking,alcohol consumption, fasting glucose level ≥ 126 mg/dL, and endoscopic hiatal hernia were significant risk factors for EE. The prevalence of EE in low socioeconomic Korean population is similar to that in personal annual medical check-ups. Risk factors for EE among them include old age, male sex, BMI ≥ 25, current smoking, alcohol consumption,fasting glucose level ≥ 126 mg/dL, and hiatal hernia.
김범진,김민기,정강률 순천향대학교 부설 산업기술연구소 2014 순천향 산업기술연구소논문집 Vol.20 No.2
This paper presents the full-bridge DC power supply for load test of a 1-kw class DC motor. The proposed power supply achieves high efficiency using pulse-width modulation(PWM) phase shift(PS) switching and the synchronous rectifier technique that reduce losses of the primary and secondary sides of converter, respectively. The improved results of the proposed power supply are shown through the experimental results of the designed and implemented converter prototype based on the operational principles explained in this paper.