• Journal of the Korean Society of Food Science and Nutrition
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• v.14 no.2
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• pp.95-98
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• 1985

This study was carried out to investigate changes in the compositions of fatty acids according to the different drying methods of raw mugwort. Raw mugwort from Kang-wha was dried with four methods such as sun-drying, shady sun-drying, heated oven-drying and freeze-drying. Total contents and fatty acid compositions of the ethyl ether extracts from the dried mugworts were examined. Total contents of the ethyl ether extracts showed remarkable differences with drying methods; freeze-dried mugwort had the highest content (5.60%), while oven dried mugwort revealed the lowest content (2.45%). Eleven fatty acids and four unknown peaks were identified by gas-liquid chromatography; major fatty acids were linoleic acid, linolenic acid and palmitic acid. Fatty acids of mugworts dried by 4 different methods were the same in kinds, but different in their compositions. The content of polyunsaturated fatty acids $(C_{18:2}+C_{18:3})$ was the highest and the loss of low volatile fatty acids was the least in mugwort dried by the freeze-drying method. The volatile fatty acids considerably decreased in oven-dried mugwort. However, the contents of polyunsaturated fatty acids were a little higher in oven-dried mugwort than in sun-dried and shady sun-dried mugwort, and the lowest in sun-dried mugwort.

• Food Science and Preservation
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• v.12 no.5
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• pp.436-441
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• 2005

This study was observed the effects of drying methods on the extraction characteristics of Rubi fructus (fruits of Rubus coreanus). Extraction yields of soluble solids and total sugar were high in the Rubi fructus dried by freeze drying, followed by infrared drying and sun drying. Extraction yield of phenolic compounds and DPPH radical-scavenging activity of extracts were in the following order; the Rubi fructus dried by freeze drying, the Rubi fructus dried by infrared drying, the Rubi fructus dried by sun drying. L value was the highest in the Rubi fructus dried by freeze drying, and a and b value were lowest in the fruit dried by freeze drying. These results suggest that freeze drying has an beneficial effect to enhance the quality of Rubi fructus. Water and ethanol extractions was more effective in the extraction of soluble solids and the antioxidative components.

• KOREAN JOURNAL OF CROP SCIENCE
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• v.34 no.2
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• pp.204-210
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• 1989

Normally cultured, harvested and yellowed leaves of aromatic tobacco variety. KA 101 were sun-cured under conventional polyethylene film house, air-cured in burley curing barn, and bulk-cured at three temperatures of 40$^{\circ}C$, 50$^{\circ}C$ and 60$^{\circ}C$. respectively, to investigate the effects of curing conditions on quality and chemical properties of leaf tobacco. Air-cured leaves had the poorest quality by price with little difference between that of sun-cured and three bulk-cured ones. Air-cured leaves were higher in ammonia nitrogen, protein nitrogen, total nitrogen, ash content and pH, but lower in sugar content when it compared with those of sun-cured and three bulk-cured ones. The curing variables tested did not affect the content of pet. ether ext. and volatile organic acids. The content of pet. ether ext., volatile organic acids, and most of volatile neutrals tended to decrease or not to change as the bulk-curing temperature increased. A quality index, (volatile organic acids, mg/l00g+％ pet. ether ext.) / ％(ash+pH) x 10, was found to be most accurate and easy to apply for the quality evaluation of aromatic tobaccos.

• Journal of the Korean Society of Tobacco Science
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• v.23 no.2
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• pp.95-102
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• 2001

This study was conducted to obtain the basic information for breeding of burley(N. tabacum cv. burley) and sun-cured tobacco(N. tabacum cv. sun-cured) variety. Two burley(Burley 21, KB 108), and T.I. 1068 and three sun-cured varieties(Yeonbyeon 3, Jaheungyeon and Jaraehong) were diallel crossed and 15 combinations of F$_1$generations were made in 1998, respectively. Six parental varieties, 15 F$_1$s were grown under the complete randomized block design with 3 replications at Chonju Experiment Station, Korea Ginseng & Tobacco Research Institute in 2000. The data of 12 quantitative characters were measured for degree of heterosis. The results obtained are as follows. Heterosis of F$_1$generation was positive in weight per leaf, plant height, stem diameter, yield, leaf length and total alkaloid content. Cross combinations between either Burley 21 or KB 108 and sun-cured varieties showed comparatively high heterosis in each characters.

• Journal of the Korean Institute of Rural Architecture
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• v.17 no.3
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• pp.37-44
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• 2015

The purpose of this study is to find important factors for establishment of masterplanner operating model in residents' participation regeneration project suitable for small provincial city compared with Seoul city's which were already operated these days. The study showed the following results: 1) Conditions required for masterplanners are professional, regionality, sustainability, balance, independence. 2) Regionality and professionality can be guaranteed by expert-recommendation and perform manual suitable for character of project and regional conditions. 3) Conditions required for masterplanners are applied flexibly depending on the size and duration of project.

• Proceedings of the Korean Society of Computer Information Conference
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• 2020.07a
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• pp.697-699
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• 2020

2020년의 게임 시장은 스마트폰 기기의 발전과 Pay To Win을 사용하는 BM모델의 감소 등의 변화로 인해 플레이어의 플레이 타임과 게임에 대한 이해도를 핵심 요소로 잡고 있다. 이러한 상황 속에서 게임에 대한 실력과 이해도가 높은 일부 유저들이 대신 게임을 플레이하여 타 유저들의 요구 사항을 충족 해주고 부당한 이익과 게임 내 성장, 경쟁 불균형을 발생시키는 'Game-Boosting'의 모습을 확인할 수 있었다. 본 논문에서는 'Game-boosting' 유저들에 대해 설명하고, 해당 유저들에 대한 기준을 정의하여, '대리게임 금지법' 에 적용될 수 있는 기준을 제시한다.

• KOREAN JOURNAL OF CROP SCIENCE
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• v.5 no.1
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• pp.65-68
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• 1969

Studies wre made to investigate the relationships obetween measurable characters of leaf tobacco such as stem length, stem daimeter, number of leaves, leaf length, leaf thickness, leaf area of biggest leaf and the dry Iield. The results are summarized as follows; n the flue cured yellow tobacco; leaf width and leaf area of biggest leaf were significantly correlated to the yield. In the light air cure type of tobacco; stem diamer, leaf width and leaf area of biggest leaf were significantly correlated to the yield. In the dark air cured type of tobacco; stem diameter, number of leaves, leaf length, leaf width, and leaf area of biggest leaf were significantly correlated to the yield. It would be noticiable that the yield was significantly correlated to the leaf width which is easily measurable in the field, and negatively correlated to the leaf thickness though not significantly.

• Journal of the Korean Solar Energy Society
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• v.30 no.5
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• pp.1-10
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• 2010

The aims of this study is to analyze that the double-skinned outer surface of building will be the effective measure to improve the use of space and save energy through the evaluation of the buildings renovation. In other words, it is significantly effective to increase the insulation of the outer surface where the most heat loss occurs; it is also energy-saving to convert the space created by pilotis in the southern and northern parts of the buildings into an double-skinned atrium. Research methods of this study are consisted with two steps, situation analysis and simulation analysis. IRISYS 1000 Series Imager was used for research of situation analysis and Visual DOE 4.0 was used for simulation analysis with the 1st Buildings of Jeju Special self-Governing Province. As results of simulation, it was proved that Double skin Method is more effective for green building than basic model. it was predicted to save 8.6% of energy by Double skin Method. Especially, in case of using of ventilation within double-skinned atrium, it was predicted that saving of energy was most effective than other method.

• Korean Institute of Interior Design Journal
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• v.20 no.4
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• pp.11-20
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• 2011

Jeju Special Self-Governing Province are trying every effort to be presented as an International Free City with unique combination of history, culture and landscape, This research focuses on the analysis of characteristics we can find in buildings in Jeju province. The main purpose is to provide basic and informative materials for the landscape formation of Jeju by investigating current status of buildings in Jeju province. This research divides Jeju province into 34 areas and categorizes buildings by use. 2,973 cases in total are collected and analyzed their architectural features. A basic analysis of the collected data is conducted in the first and the second stages. And In the third stage, 505 cases whose addresses can be identified are selected for the in-depth analysis of the registered building data on architecture year, building area, and total area. These data are analyzed by the categories of region, year, and size for the study of general characteristics of buildings in Jeju. The results show that territoriality is weak because of the simplicity of building layout on the streets. Exterior form of buildings, streetscape image, and overall city image are tedious and boring because of the lack of the variety of facade and exterior finishing materials.

• Ceramist
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• v.22 no.4
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• pp.332-349
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• 2019

Ceramic thin films are key materials for fundamental electronic devices such as transistors and capacitors which are highly important for the state-of-the-art electronic products. Their characteristic dielectric properties enable accurate control of current conduction through channel of transistors and stored charges in capacitor electrodes. The electronic conduction in ceramic thin films is one of the most important part to understand the electrical properties of electronic device based on ceramic thin films. There have been numerous papers dealing with the electronic conduction mechanisms in emerging ceramic thin films for future electronic devices, but these studies have been rarely reviewed. Another interesting electrical characterization technique is one based on electrical pulses and following transient responses, which can be used to examine physical and chemical changes in ceramic thin films. In this review, studies on various conduction mechanisms through ceramic thin films and electrical characterization based on electric pulses are comprehensively reviewed.