A Customized Product Recommendation with Attempting to Utilize Price Discrimination Strategy

Yoon,Han-Seong,유문용 경성대학교 산업개발연구소 2010 산업혁신연구 Vol.26 No.4

컴퓨터 기술의 급속한 발전은 기업 운영 및 개인 생활에 큰 영향을 미치고 있다. 기업들은 경쟁우위의 확보를 위해 고객의 욕구에 관심을 두고 고객들이 상품 구매에 편리를 주는 보다 나은 맞춤형 서비스를 제공하고자 노력하고 있다. 이러한 추천 방안의 유용성은 추천과정의 정확성 및 고객맞춤 정도에 따라서 결정된다. 고객맞춤의 방안으로 고객이 선호하는 가격할인 등을 상품추천에 고려할 수 있을 것이다. 선행연구와 달리, 본 논문에서 제시한 추천 방안은 기업체 및 유통업체가 고객이 상품 구매할 때 기꺼이 지불하려는 가격에 맞추어 고객에 대한 가격차별 정책을 동시에 활용하는 새로운 시도를 실험과 함께 구현하였다. 이와 같은 시도는 제품추천 문제에 관한 해결방안의 확장에도 의미가 있다고 사료된다. 본 논문에서 설계한 절차와 방법으로 실제 준비한 데이터를 통해 효과가 있음을 확인하였다.

현행 중학교 과학 실험·실습교육에 대한 교사들의 견해와 개선방안

이윤종,기우항,김영호,정원우,양승영,강용희,안병호,임성규,윤일희,김중욱,강동진 경북대학교 과학교육연구소 1996 科學敎育硏究誌 Vol.20 No.-

The status of facilities, management of the experiment, practices, and Science education teaching method in middle school have been investigated. The present status and reasonable management of middle school science education have been grasped from the questionaires. The results are as follows : The reasonable management for expeiments and practices of science education were scanty in the middle school around the urban and rural schools owing to the shortage of facilities and equipments, crowded class, excessive classes, work for teachers, excessive contents of present textbook and insufficience of administrative support etc. The current teaching method of middle school science has emphasized knowledge. This fact does not satisfy the objective of learning due to lack of teaching method. Desirable directions for the improvement of present status of middle school science education were proposed in this paper.

한국 시의 릴케 受容

윤석성(Yoon Seok Seong) 동악어문학회 2008 동악어문학 Vol.50 No.-

R. M. Rilke는 한국의 시인과 독자들에게 가장 큰 영향을 끼친 시인들 중의 한 사람이다. 이러한 릴케의 시를 수용한 한국의 대표적 시인들로는 윤동주, 김현승, 김춘수를 들 수 있다. 릴케의 시와 이들의 시를 대비해 본 결과, 윤동주는 릴케의 초기 시와 『기도시집』, 『형상시집』, 지상적 삶을 천명한 후기 시의 세계를 수용하고 있고, 김현승은 『기도시집』과 『형상시집』의 시 세계를 ‘가을’ 시편들에서, 『두이노의 비가』와 후기 시의 시 세계를 ‘고독’ 시편들에서 수용하고 있다. 김춘수는 초기 시와 『형상시집』, 『신시집』 등의 시 세계를 수용하고 있는데, 특히 그의 「꽃」 계열의 시들은 릴케의 시작 태도를 본격적으로 수용하고 있다는 점에서 주목할 만하다. 그러나 이 세 시인들도 릴케 시를 완전히 수용했다고는 보기 어렵다. 윤동주는 20대의 젊은 나이로 세상을 떠났고, 김현승은 ‘地上에의 決意’를 천명한 릴케와 달리 만년에 다시 기독교로 귀의했으며, 김춘수는 관념의 중압을 이기지 못하고 무의미시로 옮겨갔다. 그러나 탁월한 시인 릴케의 수용으로 한국 시의 지평이 예술성과 형이상학성에서 한층 깊어진 것은 분명한 사실이다. The representative Korean poets who followed Rilke's poetic world are Yoon-Dongjoo, Kim-Hyunseung, and Kim-Choonsoo. Yoon-Dongjoo was influenced by his early poems, 『Das Stunden-Buch』, 『Das Buch der Bilder』 and his latter years' poems shows a tendency of existentialism. Kim-Hyunseung accepted the literary world expressed in 『Das Stunden-Buch』 and 『Das Buch der Bilder』 in his 'autumn poems' and, in his 'solitude poems', accepted the poetic vision expressed in 『Duineser Elegien』 and the latter years' poems. Kim-Choonsoo adopted the poetic spirit in the poems of his early period, 『Das Buch der Bilder』and 『Neue Gedichte』. Their receptiveness and acceptiveness of Rilke's literary world were not completely succesfull but his influence on Korean poetry was so strong that their is no doubt that he deepened the Korean literary art and thought.

國內飼育 犬에 있어서 心臟絲狀蟲의 感染率에 관한 調査 硏究

Ji Hee Seong(成知禧),Hwa Joong Yoon(尹和重),Won Chang Lee(李元暢),Kwang Ho Kim(金光浩),Seung Won Kang(姜承遠) 한국예방수의학회 1996 예방수의학회지 Vol.20 No.2

The purpose of this study was carried out an epidemiological survey on the prevalence rate of the canine heartworms in Seoul City and the districts of Pa-Ju, Seong-Nam and Po-Chon in Kyonggi province of Korea from September 1994 to the end of September 1995. The blood samples from 292 male and 193 female dogs (pet, 363 ; fighting dogs, 60 ; working dogs, 62) were examined for the adult heartworms cuticle antibodies using the enzyme-linked immunosorbent assay (ELSA) kits. The test was designed to detect the antibodies of the host against the specific cuticle antigens produced with the adult heartworms.

고등학교 지구과학 실험·실습 요목 비교 분석

정원우,이윤종,기우항,김영호,양승영,강용희,안병호,임성규,윤일희,김중욱,윤성효,강동진 경북대학교 과학교육연구소 1997 科學敎育硏究誌 Vol.21 No.-

The purpose of this study is to investigate the status of the experimental and practical education in high school earth. The present status and reasonable management of the experimental and practical education in high school earth science have been grasped from the questionaires. To do this, eighty eight earth science teachers in Korea are administered questionaires. The frequency of the experimental and practical items in the seven kind of earth science text books were investigated. The problems and the reasonable management for experimental and practical education were proposed in this paper.

현행 중등학교 과학 실험 , 실습 교육 실태 조사 및 그 운영 진단 (Ⅱ) : 고등학교 과학 실험 , 실습 교육을 중심으로

김영호,이윤종,정원우,강용희,양승영,윤성효,안병호,윤일희,권용주,임성규,오철한,기우항,전명남,김중욱 한국과학교육학회 1998 한국과학교육학회지 Vol.18 No.3

본 연구는 96년도에 실시한 우리 나라 중학교 과학 실험·실습 교육의 실태 조사 연구에 따른 계속 연구의 일환으로 고등학교 과학 실험·실습 교육의 실태를 조사하기 위한 것이다. 연구내용은 고등학교 과학 교과서의 분석, 실험·실습 실시 현황 분석, 현행 실험·실습 교육의 문제점 분석, 현행 학교 구성원들의 실험·실습 교육 운영 실태 조사 및 현행 실험·실습 교육의 개선을 위한 연구과제 도출을 주요 연구내용으로 다루었다. 연구방법은 전국의 고등학교 80개교를 대상으로 이들 학교의 학생 1,977명, 교사 165명, 학교장 80명에게 적용하였다. 본 연구에서 밝혀진 결과를 중심으로 우리 나라 고등학교 과학 실험 실습 교육의 정상화를 위한 실험 내적인 연구과제를 제시하면 다음과 같다. (1)교재 개발에 대한 연구, (2)실험 킷트 개발에 대한 연구, (3)교사교육 및 재교육 프로그램 개발에 대한 연구, (4)교실 밖 실험·실습 활동 프로그램 개발에 대한 연구, (5)과학 실험·실습 소재의 개발에 대한 연구. This study was accomplished to analysis and survey on the experimental and practical science education of high school in korea for the consecutive study of the an analysis and survey on the experimental and practical science education of middle school in korea(Lee, Yoon-Jong et al., 1997). The status of facilities, management for the experiment, practices, teaching methods in high schools have been investigated. The present status and reasonable management of the high school science education have been grasped from the questionaires. To do this 165 high school science teachers, 1977 students and 80 principals of high schools in Korea are administered questionaires of Science Education Research Institute of Kyungpook National University(1997). The results of this study are as follows : The reasonable management for experiments and practices of science education were scanty in the high school around the urban and rural school owing to the shortage of facilities and equipments, crowded class, excessive class works for teacher, excessive contents of present textbooks and insufficiency of the administrative supports etc. The current teaching method of high school science has emphasized knowledge. This fact does not satisfy the objective of learning due to lack of the teaching method. Desirable directions for the improvement of present status of high school science education were proposed in this paper.

Algal bioassay 에 의한 조류생장 제한영양염류 결정

오희목(Hee Mock Oh),이석준(Seog June Lee),김성빈(Seong Bin Kim),박미경(Mi Kyung Park),윤병대(Byung Dae Yoon),김도한(Do Han Kim) 한국하천호수학회 1998 생태와 환경 Vol.31 No.2

Determination of Limiting Nutrient for Algal Growth by Algal Bioassay. Oh, Hee-Mock, Seog June Lee, Seong-Bin Kim, Mi- Kyung Park, Byung-Dae Yoon and Do-Han Kim (Environmental Microbiology Research Unit, Korea Research Institute of Bioscience and Biotechnology, Taejon 305-333, Korea and Water Resources Research Institute, Korea Water Resources Corporation, Taejon 305-390, Korea) Water quaiity and algal growth potential (AGP) using Microcystis aeruginosa were investigated from April to September 1997 in Daechung Reservoir. Secchi disk transparency was 1.1 m in August. Chlorophyll-a concentrations were higher than 10㎍/l at all samples. Total phosphorus concentration was in a range of 0.020∼0.027mg/l which is at the approximate value of 0.03 mg/l, the general critical level of eutrophication. These results indicate that Daechung Reservoir is in an eutrophic state except some temporary times and restricted sites. Phosphorus uptake rate of M. aeruginosa was higher in the water from the epilimnion than in the hypolimnion and also higher under light condition than under dark condition. Therefore, phosphorus uptake rate appears to depend on cellular phosphorous content and light condition, a meaning of endergonic process. Phosphorus was the most frequently limiting nutrient: phosphorus was limiting algal gowth in April and May, nitrogen, phosphorus and trace elements were the limiting factors for algae in August, and trace elements in September. If a fast growing alga, M, aeruginosa, is used as a test organism for assaying AGP, in vivo fluorescence instead of dry weight can be measured for algal biomass and incubation period can be reduced from traditional 14 days to 7 days.

SFEM 확장을 위한 고계 확률함수의 정식화

윤성수 忠北大學校 農業科學硏究所 2003 農業科學硏究 Vol.20 No.-

The objectives of this study is to formulate the probabilistic function for stochastic finite element method that is a method of reliability analysis It consists of the formulation of mean and variance for high order probabilistic function and the differential equation for structural analysis In this study, we considered independent random variables and high order form drove by Taylor Series expansion such that a differential equation of probabilistic variables expand high order expression. As a result of mathematical and numerical study, that the third order mean of probabilistic variable and the second order one are same

12주간의 유산소성 운동이 비만 초등학생의 신체조성과 혈액성분에 미치는 영향

윤미수,최건식,고성경,정소봉 한국스포츠리서치 2004 한국 스포츠 리서치 Vol.15 No.5

[Purpose] The purpose of this study was to investigate the effect of aerobic exercise training on the body composition and blood components in obese elementary children after 12 weeks. [Methods] Subjects of this study were composed of 20 male students ranging in age from 9 to 12 years who were classified into two groups, obese exercise group(n=10) and normal control group(n=10). For 12 weeks, obese exercise group performed the aerobic exercise training that the program was composed by Yoon. The blood samples were taken before and after 12 week Paired t-Test was adopted to analyse the difference between before and after aerobic exercise training. [Results] body fat of obese exercise group was decreased 4.8% after aerobic exercise training(p<.01) and that of normal control group was decreased 0.1% during same time(NS). Among the blood lipoprotein, total cholesterol(p<.01), LCL-C(p<.01), and triglycerides(p<.05) of obese exercise group were decreased after aerobic exercise training, but not changed HDL-C of same group. Red blood cell, Hemoglobin(p<.65) of obese exercise group were increased after aerobic exercise training. Glucose of obese exercise group were decreased after aerobic exercise training(p<.05), but not changed in Ca and P. [Conclusion] In conclusion, aerobic exercise training for 12 weeks seems to reduce body might and body fat, and to change the profiles of blood Component in obese elementary children.

열대 지역에서 통일형 초다수성 벼 품종의 생육 및 수량성 비교

이지윤,준현,성환,손영보,송유천,한상익,박동수,권영업,이철원,이종희 忠北大學校 農業科學硏究所 2015 農業科學硏究 Vol.31 No.2