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문창식,한용희 한국지식정보기술학회 2023 한국지식정보기술학회 논문지 Vol.18 No.1
Considering that there is a big difference in performance compared to invested resource by store due to various variables such as location selection of mobile telecommunication retail stores and commercial districts, this study analyzed the relative efficiency of 195 stores in the metropolitan area using data envelopment analysis. Specifically, technical efficiency and scale efficiency have been measured using CCR and BCC models after selecting input and output variables by applying Tofallis' profiling technique and Wagner's backward approach. To summarize the results of this study, first, there were 69 efficient stores based on the CCR model, and 87 efficient stores based on the BCC model, 18 stores added to the 69 agencies. Second, 92 stores in the optimal scale state (Σλ=1) and in the decreasing return to scale state (Σλ>1), respectively, and 11 stores in the increasing return to scale state (Σλ<1). In the case of stores that have been found to be in a state of decreasing return to scale, strategies such as retraining sales staff, reducing and improving input variables to the operating system such as core competencies and store size are needed to transition to the optimal state. In addition, in the case of stores that have been found to be in a state of increasing return to scale, it is necessary to increase the number of new variables, ARPU, and Value Delivery values, which are the input variables, by expanding the sales staff and store size.
日本型×印度型水稻品種統一의 出穗에 미치는 氣象 影響 解析
文昌植 圓光大學校 農村副業問題硏究所 1978 農村副業問題硏究 Vol.1 No.-
This experiment was carried out to study the effects of air temperature and sunshine hours on the heading dates and leaf emergence of rice varieties with different ecological types. A positive correlation between the days from sowing to heading and the sum of average temperature from sowing to heading date was observed, however a negative correlation between the days from sowing to heading and the temperature of any given period was indicated. The negative correlation of Tongil variety(a Japonica type × an Indica type) was larger than that of Palkweng(a Japonica). Minimum temperature effected more than other factors on the heading of Tongil. While the heading of Palkweng variety was more effected by sunshine hours. Summary This study was carried out to find out the effect of air temperatuer sunshine hours on the heading and leaf emergence between Tongil variety, crossed Japonica type with Indica type and Palkweng variety, Japonica type, during six years from 1971 until 1976. The results obtained from the above experiments are able to summarized as follows: 1. Concerning the variability of days from sowing date to heading date under the different years, the variability of Tongil variety was larger than that of Palkweng variety. It is assumed that Tongil variety is more sensitive to the meterological factors than Palkweng variety. 2. A highly positive correlation was found to be between the sum of average temperature from sowing to heading date and days from sowing to heading date. On Palkweng variety there were especially high correlation between the sum of average temperature during ten days from 80th to 90th day after sowing and the days from sowing to heading date. The following each theoritical equation was obtained : Y = 156.0-0.152X Y : Days from sowing to heading date. X : Sum of average temperature during 10 days from 80th to 90th day after sowing date. Y = 138.2-0.050X Y : Days from sowing to heading date. X : Sunshine hours during 70 days from 1st to 70th day after sowing. 3. A negative correlation was found to be among the days from sowing to heading date, sunshine hours with the each growth stage, and air temperature. Tongil variety seems to be effected by the minimum temperature on the heading, however Palkweng variety seems to be effected by the sunshine hours on the heading. 4. The relation between the number of leaves on main stem and days from sowing and heading date was the positive correlation.
그림 자료 활용이 초급 수준 학습자의 영어능력과 학습태도에 미치는 효과
문창식 ( Chang Sik Mun ),임병빈 ( Byung Bin Im ) 글로벌영어교육학회(구 호남영어교육학회) 2010 Studies in English education Vol.15 No.2
The purpose of this study is to investigate the effect of utilizing picture materials on beginning leve learners` English ability and learning attitudes. The subjects of this research were 54 third-year students at J high school. This study used questionnaires on learning attitudes and National Achievement Tests of English ability. The basic hypothesis of the experimental study was that there would be a difference in students` English ability between the experimental group and the control group depending on the teaching approach (experimental vs. grammar-translation) and learning attitudes. The result of the study showed that the experimental method utilizing picture materials was more effective than the grammar-translation method in improving learners` English ability and their attitudes towards learning. That is, the experimental group showed significant improvement in both English ability and learning attitudes, while the control group did not have significant results. Thus, utilizing picture materials in English classes for beginning-level students might be an effective alternative for facilitating them in learning English with positive motivation and attitudes.
문창식 ( Mun Chang Sig ),허윤수 ( Heo Yun Su ),정민 ( Jeong Min ),조동휴 ( Jo Dong Hyu ),황호명 ( Hwang Ho Myeong ),김관식 ( Kim Gwan Sig ),두재균 ( Du Jae Gyun ),진소자 ( Jin So Ja ) 대한산부인과학회 2004 Obstetrics & Gynecology Science Vol.47 No.4
The incidence of pregnancy in a rudimentary uterine horn is very rare. We experienced a case of unruptured rudimentary uterine horn pregnancy in the first trimester. The patient was diagnosed by laparoscopy and removed by laparoscopic resection of the pre