익상구개와에 발생한 악성 섬유조직구종 1예

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

돼지고기 드립의 몇 가지 특성과 염지 효과

문윤희,김미숙,정인철 한국식품영양학회 1999 韓國食品營養學會誌 Vol.12 No.4

한국 돼지고기의 등심, 햄 및 삼겹살과 수입 삼겹살에서 유리된 드림의 pH, 수분, 조단백질 및 아미노산 함량을 분석 비교하였다. 또 등심육의 드립에 아질산나트륨 0.02%, 식염 2.0%, 아스코르부산나트륨 0.06%, 설탕 1.0% 및 피로인산나트륨을 0.3%가 되도록 첨가하여 4℃에서 염지하면서 염지효과를 검토하였다. 드립의 pH 및 수분함량은 각각 5.72∼6.05 및 88.05∼90.85%로 부위별로 큰 차이가 없었다. 국내산 돼지고기 등심, 햄, 삼겹살과 수입삼겹살의 조단백질 함량은 각각 11.07, 8.85, 8.76 및 8.13%이었고, 이것을 수분함량과 합하면 99% 정도를 차지하였다. 등심육 드립의 유리아미노산 총량은 다른 부위육보다 많았으며, 부위에 관계없이 glutamic acid, proline, glycine, alanine 및 lysine이 많이 함유되어 있었다. 드립을 염지하였을 때에 아질산염 첨가구가 무첨가구보다 pH 상승 정도가 컸고, 미생물 증식이 느렸으며, 아질산근 잔존량은 염지 3일째부터 현저히 감소되었다. 또 염지기간중 유리아미노산 총량은 증가되었다. This study was carried out to some properties and curring effect of drip obtained from frozen-thawed pork meat. The drip was prepared from frozen domestic pork loin, ham, belly and imported belly by thawing process at 4℃. Moisture content and pH value of drips were 88.05∼90.85% and 5.72∼6.05 and do not show significant differences between each samples. Protein contents were 11.07, 8.85, 8.76 and 8.13% in the drips from domestic pork loin, ham, belly and imported belly, respectively. Approximately 99% of the drip were constituted with moisture and protein in any part of domestic pork and imported belly. Glutamic acid, proline, glycine, alanine and lysine were the predominant amino acid in the drips. Curing process of the drip by nitrite increased the pH value and total amino acid content. The residual nitrite decreased during the period of curing, and total plate counts in drip with nitrite did not reach 1×10 exp (5) CFU/g until 7 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.

건선 병변부 및 병변주위부 피부의 Cytokines 유전자 발현

윤기성,김도원,정상립,김문규,김정철 경북대학교 병원 1997 경북대학교병원의학연구소논문집 Vol.1 No.1

It has been proposed that cytokines may be involved in mediating the characteristic pathological changes in psoriasis, including epidermal hyperplasia, compromised keratinocyte differentiation, and dermal and epidermal infiltration by polymorphonuclear leukocytes and mononuclear cells. The purpose of this study os to assess the pattern of cytokine gene expression in psoriatic skin lesion. To investigate the cytokine expression pattern, we examined the transcripts of cytokine genes using reverse transcription and polymerase chain reaction (RT-PCR) method with 13 cytokine-specific primers. The Results were as follow; 1. Only the TGF-β gene was expressed in the normal skin. 2. IL-1α, IL-1β, IL-8, and TGF-β were detected in both lesional and perilesional psoriatic skin. The lesions showed more prominent expression. 3. IL-10 and GM-CSF were weakly detectable in three lesional psoriatic skin respectively, and IL-2R in two lesional psoriatic skin. 4. IL-2,IL-4,IL-5,IL-6 TNF-α, IFN-γ were not detectable on both lesional and perilesional psoriatic skin. Therefore, distinct differences in the cytokines gene expression were noted between normal and psoriatic skin. The patterns of cytokines gene expression in perilesional skin were similiar to those of lesional psoriatic skin.

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.

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.

직장인의 사회인구학적 특성과 신체적 건강의 관계

문태영,윤상문,최정도 한국스포츠리서치 2003 한국 스포츠 리서치 Vol.14 No.1

The purpose of this study was to examine the wellness-related life style on the physical health of company employees. A regular workout could lead to a better quality of life and help people live a more desirable life. For the achievement of an ideal wellness-related life, a regular exercise is mandatory. Therefore, an effort to analyze the influence of wellness-related life style on the physical health of office workers would be of use for their health promotion. The subjects in this study were 230 people from a population constituted by residents in K province. After a survey was conducted by self-administration method, frequency analysis and t-test were implemented. The findings of this study were as below: 1. Office workers of socio-demographic characters and physical health factors First, there was no significant difference among the office workers in physical fitness management. The physical fitness management was more significantly different among the male workers than among the females(t=7.17, p<.001). Second, gender and religion made no difference to their nutritive care, but it's significantly different according to marital status(t=-4.46, p<.001), age(t= 17.44, p<.001) and monthly mean income (t=6.99, p<.001). Third, their smoking and drinking management didn't vary according to marital status, age and religion, but gender(t=-5.33, p<.001) and monthly mean income(t=6.70, p<.001) produced a significant difference. Fourth, marital status, age and religion brought no difference to their medicine management, but it was significantly different according to gender(t=-3.52, p<.01) and monthly mean income(t=6.01, p<.001). 2. Physical Health The physical health collective average of the office workers was 3.07. Their gender, marital status and religion made no difference to their physical health, but it varied significantly with age(t=3.29, p<.05) and monthly mean income(t=6.01, p<.001).

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.

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℃.

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.