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- 저자 : 李容鶴 (검색결과 268 건)
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市場類型別 消費者利用 實態調査를 통한 在來市場의 改善方向 : 水原地域 在來市場을 中心으로
李容鶴,金仁煥 수원대학교 1994 地域社會開發 Vol.6 No.-
This study is to focussed on the improvement for traditional markets in Suwon area which have been developed since 1794. Recently modernized - large department stores, as New Core and Highway department Stores, were opened, and many customers change their shopping places from traditional markets to department stores. Therefore traditional markets were confronted with great difficulties. To catch hold of problems and to proaposal improvement alternatives of traditional markets, we classified markets into three types, that is traditional markets, department stores, super markets. And then asked Suwon citizens how to think about shooping environment, transportation, quality level of goods, convenient facilities, employee's service level, after service between three types of market. The results of analysis show that consumers prefer department stores to traditional markets in terms of shopping enveronment, reliabilitys of goods, convenient facilities, employee's service, after service, etc.. Threrfore, improvement alternatives of traditional merkets are below. First, modernization of traditional markets for comfortable shopping environment, convenient facilities for customers. Second, specialization of traditional markets, third, improvement of services, for example, employee's kindness, after service, method of payment, etc.
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Wave Digital Filters의 성능에 관한 연구
이용학,유수현,김재공 한국통신학회 1990 韓國通信學會論文誌 Vol.15 No.6
디지털 필터의 실현시 필터 계수를 유한어장으로 양자화할 때 계수 오차가 나타난다. 이 오차는 디지털 필터의 주파수 응답과 출력 특성을 변화시키고 특히 순환 필터에서는 계수 감도를 민감하게 하는 주요 원인 된다. 본 논문에서는 비교적 계수 오차의 감도가 낮은 WDF(Wave Digital Filter)의 계수 감도 특성에 관하여 검토하였다. 고정 소수점 양자화 방법을 이용하여 주파수 응답을 시뮬레이션한 결과유한 어장이 변화할 때 WDF의 주파수 응답이 기존의 cascade IIR 필터에 비해 비교적 우수함을 보였다. In the implementation of digital filters, the coefficient errors are occurred when filter coefficients are quantized by finite wordlength. They change the frequency responsed and output characteristics of the filters and therefore they become a main reason which could stimulate coefficient sensitivity especially in recursive filters. In this paper, we study the characteristics of coefficient sensitivity for WDF that is less effective to the coefficient errors. The simulation based on the method of fixed-point quantization demonstrates that the frequency responses of WDF have better preformance than those of conventional cascade IIR filter when variations of finite wordlength is considered.
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大學生 標的市場에 대한 媒體戰略 : 新聞 및 TV를 중심으로 한 實態分析을 통하여
李容鶴 水原大學校 1989 論文集 Vol.7 No.-
The market of undergraduates as a market segmentation is one of the main target markets for some products including books, casuals, soft drinks, sports goods and so on. The main purpose of this article is to make a contribution to establish a proper promotion strategy for the market of undergraduates through making a survey of student's attitude to newspapers and TV.
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李鎔鶴 제주대학교 1980 논문집 Vol.12 No.-
An RC phase-shift oscillator, whose frequency of oscillation can be varied from a minimum value to a value as high as desired, theoretically up to infinity, by varying a single resisitor in the phase-shift network, is described. Experimental circuits show that oscillations occur in the circuit if the total loop gain is unity and the phase change through the loop is zero. The highest frequency of oscillation is determined by the level of loading between the amplifier and the phase-shift network and the frequency response of the amplifier.
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