• 설비공학논문집
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• 제4권2호
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• pp.116-122
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• 1992

The purpose of this paper is to determine the cut off flowrate regions of the overflow valve in using L.P gas vassels. The experimental methods were employed to measure the cut off flowrate in the state of constant pressure by using the $N_2$ gas. 1) To determine the optimum cut off flowrate regions, Hose length are required 0.5 meters. 2) Cut off fowrate regions about the each pressure can be suggested as follows. A) Cut off flowrate rigions are $2.0-4.0m^3/hr$ at the pressure of the $1Kg_f/cm^2$. B) Cut off flowrate rigions are$7.0-10.0m^3/hr$ at the pressure of the $10Kg_f/cm^2$.

• 화훼연구
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• 제16권4호
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• pp.275-283
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• 2008

태국에서 도입한 Curcuma 18종 및 품종의 생육 및 개화특성을 조사하여 용도별로 우수 품종을 선발하였다. Curcuma alismatifolia 'Chiangmai Pink', 'Tropic Snow', 'Chiangmai Dark Pink', 'Lady Di', 'Siam Violet Lily' 등은 화경장이 약 40~55cm 정도이고 절화수명도 매우 길어 절화용으로 적합하였으며, C. alismatifolia 'Cambodian Red', 'Cambodian Scarlet'와 C. sparganifolia 'Siam Ruby' 및 C. thorelii 'Chiangmai Snow'는 10-20cm 정도로 화경장이 짧아 분화용으로 적합하였다. 꽃(화서)의 수명은 대부분 30일 이상 유지되었다.

• 화훼연구
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• 제17권4호
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• pp.256-261
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• 2009

본 연구는 하국용으로 가장 많이 재배되고 있는 '백선' 품종의 플러그 묘 생산에 있어서 삽수의 조건이 묘의 지상부 생육과 발근 및 절화생육에 미치는 영향을 알아보고자 실시하였다. 삽수에 부착된 엽수가 많을수록 묘의 지상부 생육과 발근이 양호하였다. 삽수 길이에 따른 지상부 생육에는 큰 차이가 없었으나, 발근은 삽수 길이가 5cm 이상인 처리에서 양호하였다. 삽수의 굵기가 굵을수록 지상부의 생체중이 무거웠으며, 굵기가 5.5 mm 처리에서 형성된 뿌리수가 가장 많았다. 삽수에 부착된 엽수가 많을수록 절화장이 길었고, 절화무게도 무거웠다. 삽수의 길이가 7~11 cm 처리에서 절화장, 절화무게, 엽수, 설상화수 등 절화의 생육이 양호하였다. 삽수 굵기가 5.5 cm 처리에서 다른 처리에 비해 절화 생육이 우수하였다. 띠라서 '백선' 플러그 묘 생산시 굵기가 5.5 mm 정도의 7cm 길이의 삽수에 잎을 4장 부착하여 삽목하는 것이 묘의 생육 및 발근에 효과적이고, 정식 후 절화의 생육에도 적합하였다.

• 패션비즈니스
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• 제15권2호
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• pp.12-22
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• 2011

The purpose of this study is to evaluate the differences of visual image on variations in the shoulder strap and length of the one piece swimsuit. Nine samples were examined: 3 variations of the shoulder strap and 3 variations of the swimsuit length. Data have been obtained from 90 fashion design majors and analyzed using Factor Analysis, Anova, Scheffe's Test and the MCA method. The results of the study are as follows: 1) The visual image, according to changes in the shoulder strap and length of the one piece swimsuit, was composed of attraction factor and boldness factor. Attraction was the most important factor in the one piece swimsuit. 2) The visual images according to changes in the shoulder strap of the one piece swimsuits are ranked in the order of one shoulder strap, strapless and two shoulder straps. They are shown to be wanted to dress - sophisticated image and untidy - unique image. 3) As the swimsuit gets shorter, it has more wanted to dress - sophisticated image and untidy - unique image. 4) The number of shoulder straps and swimsuit length do interact with each other in attraction factor and boldness factor. In attraction factor, one shoulder strap and high cut of the one piece swimsuit has the most wanted to dress - sophisticated image. However two shoulder straps and low cut of the one piece swimsuit has the most not wanted to dress - countrified image. In boldness factor, one shoulder strap and high cut of the one piece swimsuit has the most untidy - unique image. However two shoulder straps and regular cut of the one piece swimsuit has the most tidy - ordinary image.

• 한국약용작물학회지
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• 제23권5호
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• pp.363-369
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• 2015

Background : Platycodon grandiflorum radix used as a therapeutic agent for lung and respiratory diseases in traditional Korean medicine. The saponin and sugar content in P. grandiflorum root is dependent on the drying temperature and method. In this study, we investigated saponins and antioxidant contents in dried P. grandiflorum roots either not cut or cut to different lengths. Methods and Results : P. grandiflorum roots were either cut to 0.5, 1.0 or 2.0 cm in length or left uncut. They were dried at $45^{\circ}C$ and the effect of antioxidant substances, antioxidant ability, and saponin content were investigated. P. grandiflorum roots rapidly dried out when cut to short lengths. The saponin contents (platycodin D, polygalacin D, and deapioplatycodin D) was highest in the uncut P. grandiflorum roots. When the cut lengths were long, the levels of polyphenolic compound increased. However, 2,2'-azinobis-3-ethylbenzo-thiazoline-6-sulfonic acid (ABTS) and 1,1-diphenyl-2-picrylhydrazyl (DPPH) radical scavenging activities were higher in the samples cut to shorter lengths. Conclusions : These results suggested that the saponin and antioxidant content of P. grandiflorum roots could be maximized by controlling the drying rate of the roots via adjustments to the root cutting length.

• 한국지반공학회:학술대회논문집
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• 한국지반공학회 2003년도 사면안정학술발표회
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• pp.33-42
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• 2003

Since the cut slope has been big concern due to frequent failures, the government decided to include cut slopes in the“Act for Safety Control of Public Structures”. Based on the Act, the cut slope whose height is over 50m and length is over 200m should be inspected on the regular basis. According to the Act, KISTEC developed the objective evaluation method for the condition of cut slope. The evaluation method is divided into two categories: evaluation for damaged condition and evaluation for failure affecting factor. Based on the evaluation results, the cut slope is graded from A to E. In this study, the process to evaluate the cut slope condition and the evaluation criteria to divide the grade of cut slope are introduced.

• 한국음향학회지
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• 제1권1호
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• pp.37-44
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• 1982

In the mixed layer when the frequency approaches the cut-off frequency for the first mode of notmalmode theory, sound ceases to be trapped. Based on the data of surface sound velocities abtained during the period of 16 years in the Sea of Japan. A new cut-off frequency coefficient in the surface duct that will determine the miximum wave length for duct transimission of underwater sound has been calculated.

• 현장농수산연구지
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• 제24권4호
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• pp.30-34
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• 2022

본 연구는 일조방해에 의한 광환경의 변화가 절화 장미의 생산성과 품질에 미치는 영향을 분석하기 위해 절화용 스탠다드 장미 'Monet' 품종에 인위적으로 차광 처리하여 일조를 방해하고 일조방해 시간에 따른 장미의 절화수량과 생육특성을 조사하였다. 일조방해 시간에 따른 절화 장미 'Monet'의 단위면적(3.3m²)당 절화수량은 무처리구에서 40본인 반면 4시간, 8시간, 12시간 처리구에서는 각각 32본, 29본, 25본으로 일조방해 시간이 증가함에 따라 절화수량이 감소되는 경향을 나타내었다. 절화 장미의 품질과 관련된 절화 특성의 경우에도 무처리구에 비해 12시간 처리구에서 화폭과 화고, 꽃잎의 길이와 폭 등 모든 특성에서 10~20% 정도 감소하였다. 또한 절화 장미의 상품성을 결정하는 화경장과 꽃대 굵기, 절화중 등의 생육특성도 일조방해 시간이 증가됨에 따라 감소하는 경향을 보였다. 이에 반해 개화소요일수는 24.3일에서 27.7일로 14.0% 증가하는 등 일조방해 시간이 증가됨에 따라 전반적인 생육은 위축되고 개화는 지연되는 특성을 나타내었다. 본 연구의 결과에서 일조방해 시간이 증가함에 따라 꽃의 크기가 감소하고 화경장 및 절화의 생체중 등이 감소한 것은 일조방해로 인해 일평균 광합성광량자속밀도(PPFD)가 감소하고 이에 따라 총광합성량이 감소하면서 장미의 생장과 발달에 필요한 양분을 충분히 공급받지 못했기 때문으로 판단된다.

• Journal of Biosystems Engineering
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• 제28권3호
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• pp.231-238
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• 2003

Rose and chrysanthemum are the most popular flowers in Korean floriculture. Sorting flowers is a labor intensive operation in cultivation of the cut flowers and needed to be mechanized. Machine vision is one of the promising solutions for this purpose. This study was carried out to develop hardware and software of a cut flower sorting system using machine vision and to test its performance. Results of this study were summarized as following; 1. Length of the cut flower measured by the machine vision system showed a good correlation with actual length of the flower at a level of the coefficients of determination (R$^2$) of 0.9948 and 0.9993 for rose and chrysanthemum respectively and average measurement errors of the system were about 2% and 1% of the shortest length of the sample flowers. The experimental result showed that the machine vision system could be used successfully to measure length of the cut flowers. 2. Stem diameter of the cut flowers measured by the machine vision system showed a correlation with actual diameter at the coefficients of determination (R$^2$) of 0.8429 and 0.9380 for rose and chrysanthemum respectively and average measurement errors of the system were about 15% and 7.5% of the shortest diameter of the sample flowers which could be a serious source of error in grading operation. It was recommended that the error rate should be considered to set up grading conditions of each class of the cut flowers. 3. Bud maturity of 20 flowers each judged using the machine vision system showed a coincidence with the judgement by inspectors at ranges of 80%∼85% and 85%∼90% for rose and chrysanthemum respectively. Performance of the machine vision system to judge bud maturity could be improved through setting up more precise criteria to judge the maturity with more samples of the flowers. 4. Quality of flower judged by stem curvature using the machine vision system showed a coincidence with the judgement by inspectors at 90% for good and 85% for bad flowers of both rose and chrysanthemum. The levels of coincidence was considered as that the machine vision system used was an acceptable system to judge the quality of flower by stem curvature.

• 한국공작기계학회:학술대회논문집
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• 한국공작기계학회 2000년도 추계학술대회논문집 - 한국공작기계학회
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• pp.309-313
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• 2000

In order to meet the industrial requirement, precision grinding with brush tool has been applied. To analyze the brush tool characteristics, several parameters including numbers of brush string installed in a single holder, depth of cut and brush length have been changed. Several data from various source were acquired using AE, acceleration and tool dynamometer during the process. Consistent results revealing certain trend with respect to each process condition were observed.