조리용 와인의 선택 속성과 인구통계학적 특성 사이의 관계에 대한 연구

류철,차석빈,최성만,Ryul, Cheol,Cha, Suk-Bin,Choi, Sung-Man 동아시아식생활학회 2007 동아시아식생활학회지 Vol.17 No.2

The purpose of this study was to examine the actual state of cooking wine usage, and analyze the relationship between the attributes of cooking wine and demographic characteristics. The major findings of this study are as follows. First, the origin and correct choice of cooking wine were significantly related to hotel type, restaurant type and career. Second, the importance of the taste and aroma of a cooking wine, which are intrinsic attributes in the evaluation of a wine, had significant relationships with all the demographic variables whereas the importance of purchase cost and label information of the cooking wine only exhibited a significant correlation with career (p<0.05). Third, 53.7% of the respondents used cooking wine based on recipes, while the rest used it by rule of thumb. These results between restaurant type were significantly different (p<0.05). For the results of this research to be of more use, further research should be conducted on the functional aspects of cooking wine and their effects on cooking. In addition, further systematic research should be performed on the functional and sensory effects of a variety of wine tastes and aromas on cooking.

와인소비자 유형별 와인품질평가 요인에 대한 중요도 차이

류철,최성만 한국호텔관광학회 2008 호텔관광연구 Vol.10 No.2

This study was to explore the differences in wine consumers' importance of wine quality evaluation factors, and aimed at capturing the importance of wine quality evaluation factors and perception differences according to the characteristic consumer groups: gender and new wine drinkers, beverage wine consumers, aspirational wine drinkers, connoisseurs. Questionnaires were obtained from wine consumers at wine bars and finally 153 questionnaires were analyzed using SPSS package program(v. 12.0). The results of this study revealed that the importance of the palate attained the highest score. And when examined the customers' differences about importance of each factors on evaluating wine quality, significant distinctions were shown among customers' experience with wine. The extrinsic attributes such as vintage, proper service temperature also significant distinctions were shown among gender, customers' experience with wine. These results provides where one should target wine consumers and useful information for the food and beverage business.

재귀 방정식을 이용한 DCT 기반의 반화소 정밀도 움직임 예측 및 보상 알고리듬

류철,강민정 동국대학교 산업기술연구원 2007 산업기술논문집 Vol.17 No.1

공간 영역에서의 움직임 예측 및 보상은 이전 영상에서 지정된 크기의 탐색 영역을 검색하여 현재 블록과 최소 오차를 갖는 블록을 찾는 방법으로, 탐색 영역을 검색하는 과정에서 많은 부호화 시간이 소비된다. 이러한 문제점은 공간 영역에서의 움직임 예측 및 보상을 주파수 영역에서의 이동 행렬을 사용함으로써 해결할 수 있다. 본 논문에서는 기존의 이동 행렬을 새로운 재귀 방정식으로 유도하여 계산량을 더욱 줄이고자 한다. 또한 반화소 정밀도의 움직임 예측 및 보상을 위하여 주파수 영역에서의 수직, 수평 이동 행렬을 간단히 수정함으로써 공간 영역에서의 양선형 보간법에 의해 더욱 증대되는 계산량 문제를 해결하고자 한다. 실험 결과 제안된 알고리듬에 의한 DCT(Discrete Cosine Transform) 기반 주파수 영역에서의 움직임 예측 및 보상이 공간 영역에 비하여 적은 비트량을 이용하여 보다 높은 PSNR(Peak Signal to Noise Ratio)을 제공함으로 증명한다. Motion estimation and compensation in the spatial domain check the searching area of specified size in the previous frame and search block to minimize the difference with current block. When we check the searching area, it consumes the most encoding times due to increasing the complexity. We can solve this fault by means of motion estimation and compensation using shifting matrix in the transform domain instead of the spatial domain. We derive so the existed shifting matrix to a new recursion equation that we decrease more computations. We modify simply vertical shifting matrix and horizontal shifting matrix in the transform domain for motion estimation and compensation of half-pixel accuracy. So, we solve increasing computation due to bilinear interpolation in the spatial domain. Simulation results prove that motion estimation and compensation by the proposed algorithm in DCT-based transform domain provides higher PSNR using fewer bits than results in the spatial domain.

HAMS를 이용한 효과적인 비트 율 제어

류철 동국대학교 산업기술연구원 2001 산업기술논문집 Vol.12 No.2

본 논문은 블록 단위의 비디오 코더에서 최적 모드들을 빠르게 선택할 수 있는 효과적인 계층저인 검색 방법에 의한 적응 모드 선택방법을 설명한다. 비트 율 (bit rate)의 제어에 관한 문제는 버퍼가 차 있는 양에 따라 양자화 레밸이 변하는 방법이 여러 학자들로부터 연구되어 왔으니 제시된 방법은 각각의 매크로블록(macroblock)에 관한 최적 모드를 검색하지 않고 최적 결정 곡선을 검색한다는 점에서 이전의 것이 다른 점이다. 비용함수의 라그랑제 승수를 조율하여 전체적인 결정곡선이 결정되는 이러한 방법은 주어진, 즉 고정된 결정 곡선을 이용하는 것이 더 바람직하다. 가열냉각 최적화 기술 (annealing optimization technique)의 모의실험을 통해 최적의 곡선을 도출할 수 있으며 알고리즘은 H.261 비디오 코덱 범위에서 수행되고 모의실험을 통하여 좋은 결과를 보여준다. A fast converging coding using hierarchical fast search based adaptive mode selection (HANMS) algorithm that adaptively selects the modes of macroblocks is introduced. For a given frame, the optimal modes are selected based on the decision curves that minimize the overall distortion at a given bit rate. The method proposed in this paper is different from the conventional ones in that it does not manipulate the quantizer th meet the target bit rate but it satisfies the target bit rate by finding optimal modes of macroblocks which result consistent visual quality. Lagrange multiplier of the unconstrained cost function is controlled to trigger decision curves to generate optimization technique. The algorithm is implemented within H.261 video codec and simulation results demonstrate superior visual quality.

인트라 프레임에 대한 서브 블록 정합을 이용한 효율적인 오류 은닉 기법

류철,김원락 東國大學敎 産業技術硏究院 2005 산업기술논문집 Vol.15 No.1

MPEG-2와 같은 동영상 압축 표준안은 기본적으로 공간적인 중복성과 시간적인 중복성을 제거하기 위해 가변길이 부호화 및 움직임 보상 부호화 알고리듬을 사용하여 대량의 멀티미디어 데이터를 압축하여 채널 상으로 전송하게 된다. 하지만 이러한 알고리듬의 사용 때문에 전송 채널상의 단일 비트 에러의 발생시에도 복호화된 데이터에 상당한 손실을 가져오게 된다. 특히 GOP의 시작 프레임인 Ⅰ프레임은 GOP 내의 모든 프레임의 참조 프레임으로써 P,B 프레임과 같은 예측 프레임보다 오류 은닉이 필요성이 더욱 요구된다. 이러한 이유로 본 논문에서는Ⅰ프레임에 발생된 오류에 대해 복호화의 에러제어 기술인 에러 은닉 기술을 제안한다. 제안한 알고리듬은 현재 프레임의 손실된 매크로 블록을 은닉하기 위하여 손실된 매크로 블록을 4개의 서브 블록들로 나눈다. 그리고 각 서브 블록을 기준으로 새로운 매크로 블록들을 생성한다. 다음으로 이러한 매크로 블록을 이전 프레임과의 블록 정합 과정에서 정합되는 블록간의 차분 값이 최소가 되는 매크로 블록을 예측한다. 예측된 매크로 블록의 손실 서브 블록에 해당하는 블록을 오류가 발생한 서브 블록으로 대치한다. 실험결과를 통하여 제안한 알고리듬이 영상의 움직임 특성에 따라 효과적으로 적용됨을 알 수 있고 기존의 오류 은닉 알고리듬에 비해 PSNR 값이나 시각적인 측면에서 우수한 성능을 보임을 확인 할 수 있다. The video compression standard such as MPEG-2 transmitted to compress numerous multimedia data using variable length coding and motion compensation coding algorithm to eliminate spatial redundancy and temporal redundancy. but because this algorithm is used reconstructed data in occurrence of only single bit error in channel is presented rather loss. Especially the error of Ⅰ-frame, first frame of GOP, is anchor frame from all frames in GOP and needed higher necessity for error concealment than estimated frame such as B or P frames. because of this reason in this paper, we propose a error concealment algorithm among error control techniques of decoder to occurred error in Ⅰ frame. We divide a damaged macroblock of Ⅰ-frame into four sub blocks and compose new macroblock for each sub block. We estimate the block with minimum difference value through block matching with previous frame for new macroblocks and replace each estimated block with damaged sub block in the same position. Through simulation results, the proposed algorithm will be applied to a characteristic of moving with effect and shows better performance than conventional error concealment algorithms from visual and PSNR of view.

[3 價格戰略側面] 汎國民的인 物價安定 努力을

柳哲 한국마케팅연구원 1984 마케팅 Vol.18 No.2

와인 품질 평가 요인의 중요도에 대한 레스토랑 종사원의 인식 차이

류철,최성만,Ryu, Cheol,Choi, Sung-Man 동아시아식생활학회 2007 동아시아식생활학회지 Vol.17 No.3

The purpose of this study was to investigate the differences in restaurant employees' perceptions regarding the importance of specific evaluation factors when judging wine quality. To analyze the data of the study, we employed descriptive statistical analyses, t-tests and ANOVA. The findings of the study are as follows: First, the importance and influence of the palate on evaluating wine quality attained the highest score. The nose, appearance, and 'others' also earned significant points in the respective order. Second, when we examined the servers' differences in perception about the importance of each factors on evaluating wine quality, significant distinctions were shown among males and females, and those in their 20's and 30's. Third, employees' perception about the importance of each factors also showed clear differences with regards to the wine servers' gender and experience with wine. Finally, we hope the results of this study provide useful information for the hotel restaurants and other food & beverage businesses. Specifically, this research may be used to establish helpful criteria for recommending and presenting the suitable wine items based on the customer's individual tastes and preferences.

合理的 生產 위한 合理的 消費를

柳哲 한국마케팅연구원 1984 마케팅 Vol.18 No.7

호텔레스토랑 관계의 깊이와 고객화의 수준이 서비스 회복과 고객 만족의 관계에 미치는 조절효과

류철,하용규, 이미향 한국호텔관광학회 2007 호텔관광연구 Vol.9 No.2

In competitive service industry's circumstances, the success of service companies depends on the recovery of failed services very hard to the satisfying level of customers as perfect presentation of services is impossible cause of specific characteristics of service goods, As such, service recovery is very important concept in service industry management. On the basis of previous study, there were contingency factors between service recovery and customer satisfaction, ; depth of the relationship, degree of customization. This study explored that adjusting effect of depth of the relationship, degree of customization between service recovery and customer satisfaction. The results showed that depth of the relationship and degree of customization give adjusting effect between service recovery and customer satisfaction. So, the hotel restaurant managers should be recognized on the importance of depth of the relationship between hotel(employees) and customers and degree of customization to maintain service recovery strategy to achieving competitive advantage.

지역사회 애착심에 따른 호텔건립 평가와 관광자원개발 선호도 연구:대전 유성지역을 중심으로

류철,박정하,이애리 한국호텔관광학회 2010 호텔관광연구 Vol.12 No.1

In order to examine the hotel establishment evaluation and the preference of the tourism resources based on the residents' place attachment, this study conducted an analysis with the Daejeon residents as targeted subjects. The results are as follows. First, the analysis of the three factors with regard to the place attachment showed that in all three factors, the residents' place attachment had an influence on the evaluation of the hotel establishment. The cluster analysis was conducted for the residents' place attachment, which illustrated that significant differences have been shown among the clusters with regard to the evaluation of the hotel establishment. Second, the analysis of the preference of the tourism resources with regard to the place attachment showed that the residents' place attachment had a canonical correlation with the events held at Yusung and the vicinity areas. These examinations indicate that the residents' attachments to their community have a significant impact on the tourism development. Therefore, it is necessary that the policy makers who are in charge of the local development have a clear sense of the residents' attachments to their place and fully understand what the residents expect of the development of the tourism resources before going ahead with the tourism development plan.