• 전자공학회논문지
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• 제51권1호
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• pp.79-89
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• 2014

최근 새롭게 보급되는 휴대기기(스마트폰, 울트라북, 태블릿 PC)로 인하여 고용량과 빠른 속도를 원하는 소비자가 증가하고 있다. 이에 따라 Flash Memory의 수요도 지속적으로 증가하고 있다. Flash Memory는 NAND형과 NOR형으로 구분되어 있다. NAND형 Flash Memory는 NOR형 Flash Memory에 비해 속도는 느리지만 가격이 저렴하다. 그렇기 때문에 NAND형 Flash Memory는 Mobile 시장에서 많이 사용되어지고 있다. 그래서 Flash Memory Test를 위한 Fault 검출은 메우 중요하다. 본 논문에서는 Fault 검출 향상을 위한 NAND형 Flash Memory의 Pattern Test를 위한 PMBIST를 제안한다.

• 에너지공학
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• 제5권2호
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• pp.183-192
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• 1996

지역난방과 발전겸용의 열병합발전(CHP)시스템과 보조열원설비의 최적운전패턴을 결정하기 위한 수리적 모델을 구축하였다. 현실상황에 접근하여 사회전체, 전력회사 및 난방사업자 각각의 관점에서 최적화 모델이 구성되었다. CHP 시설과 보조열원의 운영권이 다른 경우, 최적운전패턴은 각 당사자의 목적함수에 따라 다르며, 여기에는 열거래요금이 결정적인 영향을 미친다. 본 논문에서는 사회전체 차원의 최적운전패턴을 도출하고, 이러한 패턴이 자율적으로 이루어지게 하는 열요금 구조를 제시하였다. 분석 결과, 사회적 관점에서의 최적화패턴에서는 보조열원의 활용이 중요하게 나타났으며, 현행의 균일 열요금 구조를 시간대별로 차등화된 열요금 구조로 변환할 경우, 자발적으로 시스템전체 차원의 최적화가 이루어질 수 있음이 발견되었다.

• 패션비즈니스
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• 제18권2호
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• pp.54-65
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• 2014

This study developed basic pattern for competition figure skating wear for school girls. Figure skating wears are difficult for making basic patterns based on standard size chart, because girls' body size are slimmer and more slender compared to the general girl's and the competition wears such as, swim suit with sleeves are, closely in contact with the player's body. The competition wears for school girl was made with consideration of changing of the body shape, physical exercises, and various specificities according to stretch material. To raise artistic effect while doing beautiful motions, and to assist in facile technique motions, competition wears need to have enough ease on the side line from waist to armpit, from armpit to wrist, and in trunk girth including crotch girth. Also, to stand out in beauty, a costume designing has a proper skirt position, length, flare width, and a tight bodice according to the player's body proportion. Most of the customers are displeased at the high price, unfitness of size, insufficient design, and difficulty in access, since they are not sold in sporting goods store. Therefore, a competition wear's basic pattern was made through scientific and emotional process including concerns on material properties, room for activities, and ideal body proportion. Systemizing the basic patterns of production method will solve high repairing expenses, unsuitable sizing, and improve accessibility for purchase.

• 대한가정학회지
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• 제41권4호
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• pp.111-126
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• 2003

The purpose of this study was to investigate the clothing consumption pattern and satisfaction of the university students. 509 subjects were surveyed during the period of 2002, for statistical analysis, t-test, ANOVA(LSD), X²-test were used by SPSSWIN program. The results of this study were following; Number of clothing showed significant difference according to sex, income, and major Female students had more clothes than male students, but female student was not satisfied with thier number of clothing. University students spend the money below one hundred thousandwon on the purchase of clothing and they depend upon their parents for the cost. Their resources of fashion information are display of shop. Clothing consumption pattern showed significant difference according to sex and female students purchased on sale more frequently than male students. The needs of university students for formal wear was high. The reason for not wearing the clothes they have showed significant difference according sex, male students din't wear their clothes for ragging or unsuitableness of size but female students din't wear because thier clothes were old fashion or they lose interests in thier clothes. The tendency to have ethetic, easycare and high quality clothing of female student was stronger than that of male students. It is necessory business develop high quality formal wear at a low price, made in practical textiles and activative designed skirts for university students.

• 보건행정학회지
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• 제23권2호
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• pp.103-111
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• 2013

Seven diagnosis-related groups (DRGs) prospective payment system is going to expand to all hospitals including university hospitals this year. However there are few studies on the change of practice pattern under prospective payment system in the university hospital setting. So This study was intended to predict the practice pattern change after the introduction of 7 DRGs prospective payment system in a university hospital setting. To predict the change of practice pattern, this study used simulation technique. Five hundred and nineteen patients classified as 5 DRGs in a university hospital were selected for simulation. The change of practice pattern were predicted based on clinicians' opinion. We also predicted payment change by service items. Major findings of this study are as follows. First, the total medical payment was reduced by 14.4%. The drug payment change (8.8%) took most of total payment reduction. The followings are the change of treatment material cost (3.2%), the change of laboratory tests cost (1.8%), the change of room charge (0.5%), and other payment change (0.1%), respectively. Second, most of the reduction in total medical payment resulted from the decreased amount of medical services themselves. The transfer of medical services to outpatient setting took up only 4.9% of the total payment reduction. The change of unit price or composition took up 5.5% of the total payment reduction. In this study we found that it is possible to reduce the inpatient services through practice pattern change in university hospital setting. However, it needs to be careful to adjust DRG payment after the reduction of provided services, because most of reduction was not due to service transfer but to service volume reduction. It is desirable to utilize the saving from practice pattern change as incentive to improve quality of care.

• 대한영양사협회학술지
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• 제12권4호
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• pp.390-403
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• 2006

The purposes of this study were to : (a) examine the using pattern of college foodservice and off-campus restaurant and identify the important service quality attributes and levels for conjoint analysis, (b) investigate the demographic factor and the lunch behavior of "S" college's foodservice customer (c) search the optimum moving time to the college foodservice by cumulative graph, (d) identify the relative importance of the service quality attributes and level at college foodservice by conjoint analysis, and (e) provide the basic data for establishing new college foodservice. Questionnaire developed were conducted with 305 daytime students. A total of 284 were usable and the data was analyzed by the SPSS(ver. 11.0) for the descriptive analysis and conjoint analysis. ‘Low price’ was the reason for using college union foodservice, and the advantages of college union the foodservice were reported to be 'speediness', 'low price', 'near distance', 'wide space' and etc in a college. For off-campus restaurant, the using reasons were mentioned 'near distance', 'menu variety', 'kindness', and 'better taste and quality' and the using advantage found out 'inexpensive and enjoyable food with friends', and 'good taste'. An optimum time required for moving to the college foodservice was calculated 9 min by cumulative graph. As the relative important attributes on college foodservice were identified in the order of the ‘price range', the 'time required for the movement' and the 'food taste', and the level were analyzed the location requiring 6~10 minutes for the movement, the price range of 2,100~2,500 won, and the providing tasty foods by conjoint analysis. As "S" college will be established a new college foodsrevice suggested by the this study result, there should be expected the increasing salse and the college student's satisfaction on campus foodservice.

• 한국가금학회지
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• 제10권1호
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• pp.1-22
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• 1983

The Purpose of this study is to examine both supply and demand side of broiler chicken in Korea. Especially the paper aims to investigate the broiler chicken production Dressing and marketing pattern which may affect the demand for it. It is generally understood that broiler chicken production becomes unstable because of frequent market price fluctuation mainly due to disequilibrium of quantities demanded ana supplied It is important to point out that marketing in the form dressed chicken has been enforced by the regulation in Seoul area since March 1st, 1983, though live birds have been customarily marketed for year. It is assumed that the subsituation of chicken meat for beef would save foreign exchanges, because increasingly large amount of beef is imported mainly thanked to a chronical shortage in local production. Main findings of this study may be summarized as follows: 1) Broiler chicker production has been rapidly increased recently, estimating 180-200 million head per year with the trend of contineous increase year after year. Price fluctuation during the year is found, especially summer and winter mainly due to seasonal demand change. It is known that mal-funconing of broiler chicken market may be one of the causes for a large Price fluctuation. Accordingly the increase of marketing efficiency may reduce the price fluctuation and also positively impact on creating demand for the chicken consumption. 2) It is also interesting to note that 90 percent of broilers are grown on the floor and almost 86 percent of total broilers composed of so called high-bros, weighing on an average more than 1.6kg per head Approximately 8 weeks are required for of around marketing birds at the feed efficiency of around 2.3-2.5 Average broiler farm raises between 1,000 and 2,000 head, showing a quite small scale of operation. Only a few sampled farmers follow an all-in and all-out method in broiler production.

• 한국경제지리학회지
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• 제25권1호
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• pp.183-201
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• 2022

주택가격을 정확히 추정하기 위한 많은 연구가 진행되어 왔다. 선행연구들은 주택의 고유 특성과 인근 지역 특성을 통제하는 계량경제모형을 활용한 분석이 많았다. 본 연구에서는 인공신경망 모형(ANN)을 활용하여 주택가격을 추정하였다. 딥러닝 기술의 장점은 변수 간의 복잡하고 비선형적인 특성을 모델링하고 데이터의 패턴을 인식할 수 있다는 것이다. 본 연구에서는 부동산 시장에서 공간적 분포도 패턴으로 인식할 수 있다는 가정하에 지리좌표를 설명변수로 ANN에 투입하였다. 선형회귀분석과 ANN 모형 간 비교 결과, 선형 모형 대비 ANN 모형의 설명력이 높았으며, 특히 ANN 모형은 지리좌표를 투입하였을 때 더 높은 정확도를 보여주었다. 또한 ANN 모형의 경우 지리좌표를 통해 모형 잔차의 공간적 자기 상관성이 크게 감소하였다는 점을 확인하였다. 이를 통해 ANN 모형의 패턴인식 능력을 활용하면 공간적 패턴을 학습시킴으로써 주택가격을 정확히 추정할 수 있음을 밝혔다.

• 한국식품영양과학회지
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• 제34권9호
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• pp.1407-1413
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• 2005

본 연구는 총 가구주의 교육정도가 외식수요에 미치는 효과를 밝히기 위하여 식료품에 대한 교육계층별 지출패턴을 조사하여 외식에 대한 지출구조와 비교하였다. 그 결과 소득에서 식료품에 대한 지출이 차지하는 비율이 가구주가 무학일 경우 가장 높고 교육정도가 높을수록 낮아져 대학원 졸업에서 가장 낮게 나타났다. 모든 교육계층에서 외식비가 소득에서 차지하는 비율이 시간의 흐름과 더불어 꾸준히 상승하는 것으로 나타났다. 이것은 외식문화가 보편화${\cdot}$대중화되어 낮은 교육계층에는 외식비가 가계에 부담이 될 가능성이 크다는 것을 의미하였다. 외식수요함수를 추정한 결과 외식가격상승은 무학과 대학원졸을 제외한 교육계층에서 외식수요를 감소시키고, 소득증가는 모든 교육계층에서 외식수요를 증가시키는 요인으로 작용하였다. 그리고 모든 교육계층에서 소득계수가 가격계수보다 커서 가격보다 소득이 외식수요에 큰 영향을 미쳤다. 시간에 따른 외식 수요 패턴을 보기 위한 전향적 이동회귀는 소득과 가격의 영향력이 감소함을 알 수 있었다. 외식의 단기적 특성을 보기 위해 충격반응함수를 도입한 결과는 모든 교육계층에서 가격충격은 외식수요를 감소시키며, 소득충격은 외식수요를 증가시키나, 가격충격은 소득충격에 비해 외식수요에 미치는 충격의 크기도 대단히 작았다.

• 수산경영론집
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• 제28권1호
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• pp.27-49
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• 1997

The purpose of this paper is to widen the viewpoint of fisheries trade which has been discussed under the coventional comparative advantage theory based on price difference between exporting country and importing country. therefore the paper tries to find out \circled1 the characteristics of several factors which has enabled fisheries trade compared to manufactured goods trade. \circled2 the development pattern of such factors and the present influence of such factors on current fisheries trade. \circled3 the present characteristics of fisheries trade especially fisheries import under the context of the logic of international fisheries trade.