豚皮를 添加한 Sausage의 製品特性 및 豚皮 安定性에 관한 硏究

정인철,문윤희 慶星大學校 1991 論文集 Vol.12 No.2

Experiments were carried out to investigate properties of product among pork sausage not added pork skin and pork sausage, fish sausage, mixtured sausage added 10% pork skin, and analyzed the storage stability of these products of 3。C and 20。C . The results obtained are summerized as follow : 1.Sausages added pork skin were high in processing yield and moisture content, but there were low in the contents of crude fat and protein. The total contents of moisture, crude fat and crude protein were above 90% in all products. 2. There was not over the permitted value of remainder content of NO₂for all products, and the concentration of salt of mixtured sausage was relative higher than other products. 3. Water-holding capacity and gel strength of sausage added pork skin were lower than sausage added pork skin, but the percentage of fat loss was lower. 4. The extractability of salt soluble protein and water soluble protein was high generally in fish, but the extractability of stroma protein was high slightly in pork sausage added pork skin. There are significant differences the pattern of using sodium dodecyl sulfate-polyacrylamide gel electrophoresis (SDS-PAGE) of salt soluble and water soluble protein between pork and fish sausage. 5. During the storage periods, moisture content and water activity was decreased and there showed large in high storage temperature. 6. During the storage periods, both pork sausage added pork skin and pork sausage not added pork skin were not different in pH value and VBN content. The pH value wes great slightly in fish and mixtured sausage and VBN content seemed to be not difference in all products until 6 weeks. 7. The TBA value was higher in pork sausage added pork skin than in pork sausage not added pork skin, and in fish sauasge than pork asausage. 8. Fish sausage was relative lower than other products in total plate counts. The coliform groups were not found until the end of storage.

익상구개와에 발생한 악성 섬유조직구종 1예

홍정표,김인섭,김문석,윤주헌 대한이비인후과학회 1999 대한이비인후과학회지 두경부외과학 Vol.42 No.9

살균방법을 달리한 시유의 저장성

정인철,권수득,문윤희 慶星大學校 1994 論文集 Vol.15 No.2

Experiments were carried out to investigate market milk treated by LTLT, HTST, UHT methods and analysed storage stability of these products at 5℃ and 30℃ by 24 hour interval. In case of LTLT, storage periods were possible to 6 days in 5℃, thermophile bacteria was more than HTST and UHT. Storage stability during stored in 30℃ was impossible only one day, psychrophile bacteria was more than HTST and UHT. In case of HTST, storage periods were possible to 6 days in 5℃, psychrophile bacteria was more than LTLT and UHT. Storage stability during stored in 30℃ was impossible only one day. In case of UHT, storage periods were possible to 7 days in 5℃, storage stability except boiling test was safe to 1st and thermophile bacteria was more than LTLT, HTST during stored in 30℃.

Moon, Yoon-Hee

문윤희,권영창,정인철,이형걸 慶星大學校 1995 論文集 Vol.16 No.2

Frozen beef loin imported from Australia was stored as 2℃ after thawing, then evaluate to improvement of raw meat aroma and palatability of cooked meat by sensory evaluation. To improvement of raw meat aroma and palatability of cooked meat of thawed beef were confirmed for the reason of conditioning after thaw as a result of myofibrillar fragmentation index(MFI) and Mg-ATPase activity of myofibril. Sensory evaluation of raw meat aroma and tenderness on frozen imported beef loin stored at 2℃ after thawing had good in all during cold storage, MFI and Mg-ATPase activity increased, therefore frozen beef loin could recognized to conditioning during stored at 2℃ after thawing. Cold storage after thawing of frozen imported beef loin can improve its cooked aroma and tenderness in case that insufficient conditioning is the reason for its low palatability, and the improvement of palatability on the cooked meat appeared to be greater in aroma than taste. In case of amino acid composition, aspartic acid, threonine, glutamic acid and alanine of imported beef loin stored 7 days after thawing were showed significantly(p<0.05) higher than that stored 0 day after thawing, total amino acid composition of imported beef loin stored 0,3 and 7 days after thawing were 148.40, 171. 06 and 188.99mg/g, respectively.

Ruled Surface로 형성된 임펠러 블레이드의 5-축 가공에 관한 연구

정대일,조현덕,윤문철,최두선,신보성,이응숙 한국공작기계학회 2000 한국공작기계학회 추계학술대회논문집 Vol.2000 No.-

This paper describes the method and the process for impeller machining on 5-axis CNC machining center. Also, The CAD/CAM software for the impeller post processing is developed. The software can be interfaced with Solid-works software for confirmation of the impeller shapes. In this study, blades on impeller is described from Ruled-surfaces between two Ferguson curves. In this study, using 5-axis NC part program obtained from the developed software, a sample impeller was machined on 5-axis CNC machining center. The machined impeller was very agreeable to the designed impeller. Thus, theories proposed in this study can be very useful for the 5-axis machining of impeller blades with Ruled-surfaces.

폴리프로필렌 이형단면사 제조에서 방사조건이 이형도에 미치는 영향

윤문구,허정림,서문호 건국대학교 1997 學術誌 Vol.41 No.2

The influence of spanning condition on the shape factor of polypropylene profiled yarn was studied experimentally. Test spinning of polypropylene was carried out by utilizing a Y-shaped capillary die which has been designed to produce profited yarn. The types, of spring machine used for this study were both conventional undrawn yarn spinning and one-step spin-draw machine. From the experimental results, there was little differences in the shape factor between undrawn and drawn yarns. The shape of the yarn was mainly determined in the spinning process. Also, the shape factor of the drawn yarn produced from the spin- draw machine was greater than that of by conventional spinning and drawing two- step process. Anisotropy of surface tension in cross section of extrudates was responsible for the resulting shape factor. As the output rate and the fineness of yarn Increased, its shape factor decreased.

저지방 프레스햄의 제조와 안정성

정인범,문윤희 慶星大學校 1998 論文集 Vol.19 No.2

This study was conducted to investigate the possibility of production for low fat pressed ham which was made without fat added. Four kinds of pressed ham were manufactured as the A(pork 70%, fat 0% : low fat pressed ham), B(pork 60%, fat 10%), C(pork 55%, fat 15%) and D(pork 50%, fat 20%). The pressed ham samples were stored at 4±2℃. The storage stability of pressed hams were analyzed during storage 60 days at 4℃. The pH of low fat pressed ham was a little higher than others, and increased in all products for 60 days, but it was not significantly different. The volatile basic nitrogen content of low fat pressed ham was higher than other products, and the thiobarbituric acid values of all samples were below 10⁴/g meat, the coliform bacteria were showed to be negative until 60 days.

단체수요를 고려한 서비스산업의 수익관리 최적화 모형에 관한 연구 : 항공사 수익관리 모형을 중심으로 An Application Airline Industries

정대영,윤문길 한국항공대학교 경영연구소 2000 경영연구 Vol.7 No.2

수익관리(Revenue Management)는 공급과 수요관리의 문제점을 해결하기 위한 새로운 접근방법으로서 시장에서의 수요와 공급을 적절히 조절함으로써 수익을 최대한 시키는 경영기법이며, 경영과학분야와 실무적으로는 항공사 및 기타 소멸성 자산(Perishable-Asset)을 운용하는 서비스 기업에 빠르게 확산되고 있는 분야중의 하나이다. 본 연구에서는 할인요금에 대한 좌석할당에 있어서 미래에 발생할 수 있는 정상요금 예약의 기대수익보다 현재 요구된 할인요금의 수익가치가 더 크다면 할인요금 예약은 수용되어야 한다고 Littlewood[42]가 제안한 복수요금형태에 기반을 둔 좌석재고 통제규칙을 기초로 동적 계획법(DP: Dynamic Programming)의 특성을 고려하여 재고통제를 위한 수익관리기법에 관한 연구를 수행하였다. 모의실험은 제시된 최적화 모형과 판매허용용량을 정하여 허용가능 용량내에서 판매가능 여부를 결정하는 표준형 네스팅 방식을 통한 매출액의 비교를 실시하였다. Revenue management is a method that can help a firm sell the right inventory unit to the right customer at the right time and for the right price. It guides the decision of how to allocate undifferentiated units of limited capacity to available demand in a way that maximizes profit or revenue. This paper examines the problem of proper(optimal) control over the seat allocation on flight. We formulate and analyze a Markov Sequential Decision Model for airline revenue management on multiple-price by considering a simple form of airline group demand. Our model allows cancellation, no-show and overbooking. In this paper, we make assumptions on a single-leg flight but not on the arrival patterns for the various fare classes. As a result of Simulation, our numerical examples show that revenue gains of up to 9% are possible with our model, compared with an standard nesting method. It is demonstrated that our model is valid and possible application to airline industry and applicable to other problem of revenue management with perishable service or product such as ISP, Cruise, hotel, Mobile terminal with very short Product life cycle. The purpose of this paper has been not so much to provide a model for a specific airline industry, as to indicate the nature and significance of the general service industry problem and to demonstrate one approach, and its shortcomings, for resolving it. It is hoped that the presentation of these results will stimulate additional research, either along the lines suggested or in new directions, for what appears to be an important and pressing decision problem.

재래의류시장의 e-business 적용 전략 연구

윤문길,정대영,이신수,이혜영 한국경영과학회 2000 한국경영과학회 학술대회논문집 Vol.- No.2

Dongdaemoon clothes market can make traditional commerce to improve problems which happen to traditional commerce and satisfy between customers and salers through combination among Electronic Commerce which is growing up in 21 centuries place innovation This thesis is focusing on suggesting strategies which practice to let Dongdaemoon clothes market customers and wholesalers, retailers to use Electronic Commerce as strategic skills by analyzing core successful factors for adopting Electronic Commerce in Dongdaemoon clothes market. Adopting Electronic Commerce in Dongdaemoon clothes market when the customer make a reservation and the salers provide the customer with discounting service, the customer was willing to but it. Internet service categories which affect customer's satisfaction are providing lots of product information. This thesis shows providing information made the customer to increase customers's satisfaction degree and buying intention. Also convenience of product research, and reliability in transaction process can enable the customer to increase transaction reliability. These factors are very important in Electronic Commerce. In addition, factors which show customer's suggestion and incovenience by using best seller information and discounting service board when they buy some items in Dongdaemoon clothes market affect the customer satisfaction degree and satisfaction degress of providing information. However, this thesis is analyzed that reliability of transaction process doesn't affect all successful factors such as product quality, size, online payment system, price reliability.

전경대원에서 발생한 결핵의 임상 양상

문창기,박상준,조민구,김영중,김소연,김윤권,정준오,안석진,김은실,서승오,김지훈,최원제,이윤영,박형기,최규영,김현근 대한감염학회 2006 감염과 화학요법 Vol.38 No.6

Background: The purpose of this study was to document the incidence and clinical characteristics of patients with tuberculosis (TB) in combat and auxiliary police, living in a group, in Korea where the incidence rate of active TB in a general population is higher than in Western countries. Materials and Methods:We retrospectively reviewed the medical records of all tuberculosis patients diagnosed at National Police Hospital from January 2002 through December 2004. Results:In 2002-2004, a total of 156 cases of tuberculosis were identified with the mean (Standard deviation) age of 20.6 (±1.0) years. Of these, 134 (85.9%) patients were registered as new cases, 11 (7.1%) as relapse, 2 (1.3%) as failure, 5 (3.1%) as treatment-after-default cases whereas 4 (2.6 %) patients were not included in any categories. Average annual new TB rate and smear-positive TB rate were 86.5/10^(5) and 17.4/10^(5) person-years, respectively. In 12 of 31 smear-positive cases, time from onset of symptoms to diagnosis was more than 30 days. Two multidrug-resistance TB cases were identified and two suspected outbreak episodes of TB had occurred during 3 years. Conclusion:There was no statistically significant difference in the incidence rate of new cases of TB between the general population aged 20 to 29 years and combat and auxiliary police in Korea. 배경 : 국내 결핵의 발생은 감소 추세에 있으나 여전히 후진국형 발생양상을 보이고 있다. 특히 집단생활을 하는 젊은이들에서 발생하는 결핵의 유행이 간헐적으로 알려지고 있어 우려를 낳고 있다. 이에 저자들은 최근 전경대원의 결핵 발병 양상에 대해 알아보고자 본 연구를 시행하였다. 재료 및 방법 : 2002년 1월부터 2004년 12월까지 3년간 경찰병원에서 결핵 진료를 받은 전경대원의 의무기록을 후향적으로 분석하여 연도별 결핵 신환발생률, 도말양성결핵 신환율, 진단 지연, 집단발병, 다제내성결핵을 조사하였다. 결과 : 연도별 결핵 신환자 수(10만명당 발생추정치)는 2002년 50명(83.6명), 2003년 42명(83.7명), 2004년 42명(93.5명)이었고 도말양성 폐결핵 신환자 수는 2002년 10명(16.7명), 2003년 11명(21.9명), 2004년 6명(13.4명)이었다. 3년간 도말양성 폐결핵 환자는 31명이 있었고 그 중 12명은 호흡기 증상 발생 30일이 지나서 진단을 받았다. 다제내성 결핵은 2명이 있었으며 결핵의 집단발병이 의심되는 사례는 2차례 있었다. 결론 : 전경대원과 20-29세 연령군 일반인의 결핵 신환발생률, 도말양성 폐결핵 발생률의 통계적으로 유의한 차이는 없었다.