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멀티채널 Spatial Audio Coding에서의 효율적인 Spatial Cues 사용과 그에 따른 Spectrum 보상방법
이병화,백승권,서정일,한민수,Lee, Byong-Hwa,Beack, Seung-Kwon,Seo, Jeong-Gil,Han, Min-Soo 대한음성학회 2005 말소리 Vol.53 No.-
This paper proposes an efficiently representing method of spatial cues on multichannel spatial audio coding. The Binaural Cue Coding (BCC) method introduced recently represents multichannel audio signals by means of Inter Channel Level Difference (ICLD) or Source Index (SI). We tried to express more efficiently ICLD and SI information based on Inter Channel Correlation in this paper. We adopt different spatial cues according to ICC and propose a compensation method of empty spectrums created by using SI. We performed a MOS test and measuring spectral distortion. The results show that the proposed method can reduce the bitrate of side information without large degradation of the audio quality.
이병서 ( Byong Seo Lee ),위태석 ( Tae Seok Wi ) 한국식품유통학회 2004 食品流通硏究 Vol.21 No.1
This study discusses the consumer`s awareness level and some improvement strategies. Main results are summarized as follows : (1) Consumers` awareness level for fruit brand is estimated by surveys for 600 housewives residing in Seoul. Its result shows that awareness level is very low and these results are caused by quality management, product differentiation, and promotion. (2) Main strategies are discussed in quality condition and brand promotions and advertising, and large scale retailers` private brand. Especially, quality improvement is needed in strengthening sweetness and safety. And the box labelling management is important in raising consumers` awareness level. Finally, producers` countravailing strategies are required to keep producer`s brand power relative to the private brand
위태석 ( Tae Seok Wi ),이병서 ( Byong Seo Lee ),황규석 ( Kyu Suk Hwang ) 한국식품유통학회 2004 食品流通硏究 Vol.21 No.1
For the last few years, the wholesale market system in Japan has been experiencing a lot of changes in the related sectors. The greatest changes in the environments surrounding the wholesale market were enlargement of the producers` cooperatives, increase of agricultural products marketed in the outside of the wholesale market system, and management aggravation of the related businessmen. These changes resulted in the revision of the Wholesale Market Law in 1999 to cope with the social needs successfully. Major purposes of the revision of the law would be summarized as follows : 1. To improve management ability of the related businessman 2. To improve dealing method in the Central Wholesale Market 3. To promote reorganization of the wholesale market
위태석 ( Tae Seok Wi ),이병서 ( Byong Seo Lee ),황규석 ( Kyu Suk Hwang ) 한국식품유통학회 2003 食品流通硏究 Vol.20 No.3
This paper intends to find out the establishment possibility of competition superiority based on vegetable`s selling conditions by analyzing the marketing behavior regarding the selling conditions and the middlemen`s reaction to the producer`s marketing behavior. And the survey on the middlemen indicates that the producer`s selling conditions, as well as vegetable`s quality itself, are regarded as an important factor when middlemen make a purchasing decision in the wholesale market. And the comparative analysis on the selling profits also shows that Nagano Prefecture has a competitive edge over Iwate Prefecture in the Tokyo Metropolitan Area Wholesale Markets where two are competing for lettuce market. Finally, the middlemen have a preference for Nagano` selling conditions rather than Iwate`s ones overly. The results of this study tell us that the competitive strategy behavior in term of selling conditions in the producing district is making a success to some extent.
복수 공동 계산방식을 통한 농협 판매사업의 활성화 방안 -일본의 나가노현 야츠가타케 농협 사례를 중심으로-
위태석 ( Tam Seok Wi ),이병서 ( Byong Seo Lee ) 한국식품유통학회 2004 食品流通硏究 Vol.21 No.4
This paper tried to seek sales enhancement measures of Agricultural Cooperative by analysing pooling system of Kawakami Branch Office of JA Yatugatake in Nagano Prefecture. Japan. The restructuring of business system for a favorable sales of vegetables & fruits in response to various requests from members was examined. The support measures of Agricultural Cooperative for member farmers are also devised. It was found out that to improve pooling system and to organize members as a functional form are effective for sales enhancement of Agricultural Cooperative.
선택실험법을 이용한 대중국 수출용 쌀 유기인증의 가치추정 - 중국 서북권역 중심으로 -
유창환 ( Yu Chang-hwan ),김태균 ( Kim Tae-kyun ),이병서 ( Lee Byong-seo ) 한국식품유통학회 2017 食品流通硏究 Vol.34 No.4
The objectives of this study are to analyze the preference of Korean rice by attribute in northwestern China consumers(Xian) by the Choice Experiment(CE) method, to identify factors that can induce the consumers to select the Korean rice, and to suggest plan for maximizing the effect of export strategy. For the purpose, of this study, We conducted consumer surveys of 701 northwestern Chinese consumers. When comparing rice from korea, China and japan, there was a statistically significant difference in the level of organic certification in the coefficient of price. However, there was no significant difference in the country of origin and the type of packaging. These results suggest that rice consumers in the northwestern region of China consider safety and price as important factors rather then their origin and type of packaging. As a result of the analysis of additional Willingness To Pay(WTP) amount based on the certification level using the conditional logit model estimation coefficient, 51 yuan / 2kg was the additional WTP with the Chinese rice certified as organic. The additional WTP with the Korean(Japanese) rice certified as organic 42 yuan / 2kg(45 yuan / 2kg), respectively. Furthermore, the additional WTP is 64 yuan / 2kg in the case the Korean rice is certified as organic by Korea and China. In the case the Japanese rice is certified by Japan and China, the additional WTP is 67 yuan / 2kg. It is considered that the organic certification of the Chinese is the most important compared to that of two others, since the additional WTP of the Chinese organic certification is higher. In addition, when Korean organic certification is added to Chinese organic certification, consumers' satisfaction of the double certification is higher than that of the single. However, the purchase intention decreases as the price increases, since the price coefficient is negative(-). As Chinese consumers regard food safety as important, it is necessary to meet their demand for safety through obtaining various certificates. Export maximization deserves much consideration by developing high-value rice products(rice processed products, functional rice, etc).