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허유순(You soon Heo),최용복(Yong bok Choi),정문섭(Moon sub Chung) 제주대학교 관광과경영경제연구소 2018 産經論集 Vol.38 No.3
Purpose - The purpose of this study is to analyze the past research trends of mountain climbing in order to establish the status as a representative professional Journal of Tourism & Industry Research in Jeju National University. It is expected that it will be able to lay the foundation for the utilization of the subsequent research by examining the applicability of the new research methodology. Research design, data, and methodology - The data to be used in the analysis of this study are the results of a total of 322 journals. In this study, content analysis and meta analysis for semantic network analysis is performed in parallel. NVivo 11 pro is used to clearly identify which of the final classical research articles were extracted and incorporated into existing studies. In addition, KH Coder 3, an open source program, was applied to the study to conduct a meta-analysis on the research subjects. Results - In the research methodology, the proportion of quantitative research is 53.7% (173), which is higher than the qualitative research (143, 45.3%). First, despite the multidisciplinary approach and diversity of research topics, there was a lack of originality and symbolism in the actual research content. Secondly, it has been studied variously in the research subject mainly tourism industry such as tourism, service, industry, marketing, strategy, system, development, performance, relationship, satisfaction. Third, the classification of research is divided into service performance and quality, customer satisfaction , strategy , marketing , and tourism development industry Conclusions - In this study, two future directions are presented as follows. First, we need to establish a foundation for multidisciplinary academic journals through mixing and expanding research themes. It is necessary to establish a foundation to actively reflect the demand for new disciplines by broadly expanding within a wide range of directions without limiting the specific areas of each discipline. Secondly, technological aspects that coexist on the socio-cultural background should not be overlooked either. It is suggested that a special strategy should be prepared to present an insight into the problems of the complex intertwined community and to become a fused - journals centered on tourism.
허유,이재곤,Heo, You,Lee, Jae-Kon 한국섬유공학회 1977 한국섬유공학회지 Vol.14 No.1
링정방 공정중의 사절수를 추정하기 위하여 간단한 수학적 모델를 만들었다. 사절현상에 가장 중요한 방사장력, 및 단사강력 만을 고려하여 사절수에 가장 기여도가 큰 요인을 찾아내고 사절율을 이론에 의해 유도하였다. A Study on the end breakages in ring spinning by simple mathematical model has been carried out. The most important factors such as yarn strength, yarn strength variation, spinning tension and spinning tension variation were considered among the factors known as affecting the breakage phenomena. The relative importance of such factors was investigated and the number of end breakages based on the mathematical model was calculated. From the theoretical results, it could be concluded that the value of end breakage rate is obtained and the most important factor contributed to breakages is yarn irregularity.
우범식,이재곤,류운영,허유,Woo, Bum-Shick,Lee, Jae-Kon,Ryu, Woon-Young,Heo, You 한국섬유공학회 1978 한국섬유공학회지 Vol.15 No.4
In order to investigate the possibility of improvement of the open end spinning machine which has higher productivity and is more economical than the existing ones, 5 kinds of new open end spinning equipments were designed and operated to produce cotton yarns. The two of those five, enclosed rotor with grooved twister and open rotor with grooved twister, were operated only to produce yarns of Ne 8.5, Ne 4.0 respectively. The quality of both yarns were inferior. The other three types of five, the closed rotor, the closed rotor with radial twister and closed rotor with pinned twister, were operated to produce cotton yarns of Ne 11.0, Ne 11.9 and Ne 10.5 respectively. The quality of produced yarns with these three equipments was fairly good and acceptable.
박은지 ( Eun Ji Park ),허유 ( You Heo ),손병구 ( Beung Gu Son ),최영환 ( Young Whan Choi ),이용재 ( Yong Jae Lee ),박영훈 ( Young Hoon Park ),서정민 ( Jeong Min Suh ),조재환 ( Jae Hwan Cho ),홍창오 ( Chang Oh Hong ),이상규 ( Sang 한국환경과학회 2014 한국환경과학회지 Vol.23 No.5
Growth and physiological disorders caused by abnormally low temperatures were evaluated in pepper, an important field crop in Korea. In addition, the effects of chemical treatment using glutamine was verified on minimizing the damages by low temperature. The growth of pepper plants in stem length and diameter was suppressed as the temperature decreased from 25℃, and the suppression level was the highest for plants grown for 90 days at 20℃. However, root growth was not affected by the different temperatures. The number of leaf and leaf area decreased at the temperatures below 25C, an optimum temperature for growth. Fresh weight and dry weight decreased for plants grown at 20℃. Pepper fruit yield also decreased by 11% at 20℃ in comparison to 25℃. Falling blossom rate was different depending on the growth temperature, and the rate was 27.2% at 25℃, 35.2% at 22.5℃, and 41.0% at 20℃, indicating that falling blossom rate increased as temperature decreased. Different growth temperatures did not affected on the level of symptom of calcium deficiency and Phytopathora blight. Falling blossom was severe at abnormally low temperature of 20℃, but the treatment of glutamine reduced falling blossom rate and increased the yield by 7.0% as compared to control. The optimum concentration of glutamine treatment was 10 mg/L for yields.
김소희 ( So Hee Kim ),허유 ( You Heo ),황령환 ( Ryeong Hwan Hwang ),박영훈 ( Young Hoon Park ),최영환 ( Young Whan Choi ),서정민 ( Jeong Min Suh ),강점순 ( Jum Soon Kang ) 한국환경과학회 2014 한국환경과학회지 Vol.23 No.9
This study was conducted to examine the effect of LED light quality and supplemental LED light on growth and flowering for potted flowering plant of Kalanchoe. 1. Plant height of Kalanchoe was enhanced under Red, regardless of treatment time. 2. Root length and stem diameter of Kalanchoe were enhanced by Red+Blue. 3. The number of internodes was not influenced by LED light quality. Length of flower stalk of Kalanchoe increased under Red+Blue, but treatment time did not result in statistically significant differences. 4. Leaf area was not influenced by LED light quality in Kalanchoe. 5. The number of flower buds and open flowers was decreased by LED light treatment, but days to flowering was reduced by Red+Blue for 4 hr after sunset in Kalanchoe. 6. Chlorophyll and anthocyanin content was not significantly affected by LED light treatment, but anthocyanin content tended to increase by Blue 4 hr after sunset. 7. Fresh and dry weight did not increased by LED light treatment in Kalanchoe.
번행초의 대량번식을 위한 종자처리가 발아력에 미치는 영향
강점순 ( Jum Soon Kang ),박은지 ( Eun Ji Park ),김소희 ( So Hee Kim ),허유 ( You Heo ),박영준 ( Young Hoon Park ),최영환 ( Young Whan Choi ),손병구 ( Beung Gu Son ),임우택 ( Woo Taik Lim ),서정민 ( Jeong Min Suh ) 한국환경과학회 2014 한국환경과학회지 Vol.23 No.5
Tetragonia tetragonides is a medicinal plant native to ocean sand soil of southern provinces and has significant effects on the prevention and curing of gastroenteric disorders. Despite of its popularity, supply of the plant has never met the level of demand because of the absence of an adequate culturing method. The present study, thereby, was conducted for classifying the plants with geographically different characteristics, studying growth habits, developing a new culturing method and establishing a large scale propagation system of selected superior individual plants. The study was also aimed for revealing optimum conditions for seed treatment, fertilization, and efficient culturing system and thereby, for utilizing the plant as a new income source for rural communities. The seed was elongated with size of 2.6 mm (width) × 1.8 mm (length). No difference in seed size was observed depending on different inhabitate. Each flower produced about 4.5~4.8 seeds. Germination rate was high for seeds matured for 40 days after fertilization, but deceased to 50% for seeds matured only for 20 or 30 days. Seed dormancy lasted 6 months and seed storage at humid 5℃ facilitated germination. Mechanical obstruct of seed germination was due to seed coat and removal of seed coat enhanced the germination rate. Optimum temp. for seed storage was 5℃, and high germination rate was maintained for 350 days. However, for stratification condition or at room temperature, germination was significantly reduced as storage time increasedOptimum treatment of plant growth regulators was soaking in GA3 250 mg/L for 1 hr. The priming treatment with 50 mM Ca(NO3)2 at 20℃ for two days improved the seed germination with 10% compared to non-treated control. The treatment of 20% NaOCl for 3 hr. improved the seed germination rate up to 10% and 1 day ahead.