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Effects of Storage Gas Concentrations on the Qualities of Garlic(Allium sativum L.) Bulb during CA Storage (통마늘의 CA저장 중 저장기체 농도에 따른 품질변화)

  • 강준수;홍경훈
    • Food Science and Preservation
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    • v.8 no.3
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    • pp.258-263
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    • 2001
  • This experiment was conducted to measure the physiological qualities and the chemical compositions of garlic bulb (Allium sativum L) stored in air and controlled atmosphere at 0$\^{C}$ for 4months. There were no significant differences in physiological qualities such as soluble solid, dry weight and firmness by O$_2$ and CO$_2$ concentrations during 4 months of storage. The surface color of garlic cloves changed toward more dark direction in Hunter color surface with storage. CA storage inhibited the sprout growth by 50% and had no significant difference in root growth. Garlic stored in CA showed lower level of pungency, especially CA of low oxygen concentration (1%) showed the lowest level of pyruvate. Garlic stored in high CO$_2$ concentration(20%) showed the lowest level of fructan concentrations and the highest free sugar concentrations.

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A Study on the Avoidance of Typhoon 'Maemi' - Mainly on the training ship KAYA - (태풍 매미의 피항에 관한 연구 -가야호를 중심으로 -)

  • Kim, Min-Seok;Kang, Il-Kwon;Kim, Hyeong-Seok;Jeong, Sun-Beom
    • Journal of the Korean Society of Fisheries and Ocean Technology
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    • v.40 no.3
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    • pp.225-231
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    • 2004
  • The power and scale of 950 hPa typhoon "Maemi" which struck the shore of Gosung in Kyungnam Province was same as that of 951 hPa typhoon "Saraho" in 1959. For the purpose of getting the safety of training ship "KAYA", we anchored at Jinhae Bay with riding at two anchors paid out 8 shackles of cable respectively. By the way when wind force being over 30m/s, we could not keep the safety of the ship "KAYA" by means of the holding power of an anchor only. Just by using the main engine moderately, we were able to maintain the security of the ship. The holding the main engine moderately, we were able to maintain the security of the ship. The holding power of an anchor according to the way of anchoring, the quality of sea bottom, the direction and speed of wind and current, and the length of an anchor cable were analyzed. The obtained results are summarized as follows : 1. When riding at two anchors rather than lying at single anchor we could get a good holding power. 2. There was a big difference in holding power according to the quality of the bottom. 3. It would be best anchoring in a soft mud area than in any other place as possible. 4. It would also be desirable to set anchor shackles much more than equipment number prescribed in regulation in order to get safety of a ship providing against typhoon.

The Strength Analysis of Mooring winch according to the division angle (무어링 윈치의 분할각도에 따른 강도해석)

  • Ha, Jeong-Min;Han, Dong-Seup;Han, Geun-Jo
    • Journal of Navigation and Port Research
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    • v.34 no.10
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    • pp.775-780
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    • 2010
  • In the machinery, the brake system is as important part as machine's working. The situation of emergency stop, the machine doesn't stopped would be occur big accident. This is common things for all of machinery, also for the ships. There are two kind of mooring devices are existed on the ship. One of them, the windlass winch, is used to anchor. The other, the mooring winch is used to moor the ship in pier use the rope tied to bitt on dock. In case of previously been used mooring winch made of a steel plate, and the bolt which was connect brake band and lining broken. In this study, prevent an accident find the position of stress concentration by finite element analysis program. And removed stress concentration. And search the optimum position of the separation angle to be more efficient.

Design and test of cable based airborne capture mechanism for drone (케이블을 사용한 드론용 공중 포획 메커니즘의 설계 및 테스트)

  • Jung, Sanghoon;Nguyen, Van Sy;Kim, Byungkyu;An, Taeyoung
    • Journal of Aerospace System Engineering
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    • v.14 no.3
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    • pp.10-16
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    • 2020
  • We propose a capture mechanism based on the principles of fishing nets that can be mounted on the drone using cable. The gripper mechanism, mainly proposed for the drone is heavy, and is limited to catch standardized objects. In contrast, the proposed capture device in this paper is light, flexible, and can capture various types of objects from a long distance. The theoretical relationships between cables and mechanisms were analyzed. Finally, the capture device was designed and manufactured to be installed in the drone (DJI S900) to conduct capturing experiments for various objects and verify the validity.

'Nocturnal Council' in Plato's Laws (플라톤의 <법률> 편에 있어서 '야간회의')

  • Kim, Yun-dong
    • Journal of Korean Philosophical Society
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    • v.131
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    • pp.33-48
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    • 2014
  • is Plato's last great philosophical work. 'Nocturnal Council' is located in the end of this work. Many scholars interpret 'Nocturnal Council' into opposite directions. According to one interpretation, this Council is a kind of an addition to supplement the philosophical elements. So this is Plato's 'after-thought'. But another interpretation is that 'Nocturnal Council' is a climax in Plato's political thought. Plato didn't abandon the theory of Idea in . In this respect, we find a coherence between and . Finally, a vague position of 'Nocturnal Council' in remains an opposite interpretations each other.

An Empirical Study on the Validity of the Availability Huristics and Anchoring Huristics in the Korean Stock Market (한국주식시장에서 가용성 어림짐작과 닻내림 어림짐작의 유효성에 관한 실증연구)

  • Sam-Ho Son;Jeong-Hwan Lee;Se-Jun Lee
    • Asia-Pacific Journal of Business
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    • v.14 no.1
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    • pp.265-279
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    • 2023
  • Purpose - The purpose of this paper is to compare and review behavioral economics models that explain stock price changes after large-scale price shocks in the Korean stock market and to find a suitable model. In this paper, among the theories reviewed, it was confirmed that the anchoring heuristics theory has high explanatory power for stock prices after large-scale stock price fluctuations. Design/methodology/approach - This paper conducts an event study on stock price shocks in which the individual stocks that make up the KOSPI200 index show more than 10% fluctuation on a daily basis. In order to materialize the abstract predictions of heuristics theories in a varifiable form, this paper uses the daily stock price index change as a reference point for availability heuristics, and uses the 52-week highest and lowest price as reference point for anchoring heuristics. Research implications or Originality - As a result of the empirical analysis, the stock price reversals did not consistently appear for changes in the daily index. On the other hand, the stock price drifts consistently appeared around the 52-week highest and the 52-week lowest price. And in the multiple regression analysis that controlled for company-specific and event-specific variables, the results that supported the anchoring heuristics were more evident. These results suggest that it is possible to establish an investment strategy using large-scale price change in Korean stock market.

An analysis of anchor stones on the west and south coasts (서·남해안 출수 닻돌 분석)

  • PARK Seungmin
    • Korean Journal of Heritage: History & Science
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    • v.55 no.4
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    • pp.6-22
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    • 2022
  • In this paper classifies the types of 228 anchor stones discharged from the west and south coasts, assumes a combined method by type, routes through discharge locations, and It attempted to estimate the burial site. Prior to classification of types, the weight, thickness, width, and length of the anchor stone were measured, and the largest Young in the tomb The scent weight was classified into I~V groups, and the shape of the anchor stone was classified into 1-6 types. All of these weight and shape correlations It was classified into 17 types. The combined method by type is 180kg or less depending on the morphological characteristics of the reference value of the extracted anchor stone, and the type An anchor of type 1 or 2 is used in combination with an anchor, and a anchor of type 3 or 6 weighs more than 180kg and is combined with an anchor The dragon was assumed to be an anchor. Along with this, the route and burial site are identified through past records and testimony of local residents It was checked against the data. The route was largely consistent with past records, but the new route was apparent in waters near the island or inland It was also drawn. In the case of burial sites, small and large in Taean Mado Sea and Jindo Byeokpajin Sea, where anchor stones are concentrated, Considering the pattern of the type anchor stones being discharged, it was consistent with the testimony that ships of various sizes were mysterious in the two seas. Based on this type classification, a study on the spatiality of the anchors was conducted. First, a comparison and analysis was done on whether actual real data, such as anchor stones, old ships, and relics, were identified on the Joun-ro route and international trade routes as recorded in the past literature. Where there was no record, the route was estimated based on real data. To this end, routes estimated based on the testimony of local residents and modern ship workers were analyzed as to whether ships traveled there in the past and whether they could actually sail. Next, the location of each seedling was estimated by ship size according to the weight of the anchor stone. In the case of the Taean Mado Sea and Jindo Byeokpajin Sea, both small and large anchor stones were discharged from the coastline and were far away.

A Study on the Energy Efficient Data Aggregation Method for the Customized Application of Underwater Wireless Sensor Networks (특정 응용을 위한 수중센서네트워크에서 에너지 효율적인 데이터통합 방법 연구)

  • Kim, Sung-Un;Park, Seon-Yeong;Yu, Hyung-Cik
    • Journal of Korea Multimedia Society
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    • v.14 no.11
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    • pp.1438-1449
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    • 2011
  • UWSNs(Underwater Wireless Sensor Networks) need effective modeling fitted to the customized type of application and its covering area. In particular it requires an energy efficient data aggregation method for such customized application. In this paper, we envisage the application oriented model for monitoring the pollution or intrusion detection over a given underwater area. The suggested model is based on the honeycomb array of hexagonal prisms. In this model, the purpose of data aggregation is that the head node of each layer(cluster) receives just one event data arrived firstly and transfer this and its position data to the base station effectively in the manner of energy efficiency and simplicity without duplication. Here if we apply the existent data aggregation methods to this kind of application, the result is far from energy efficiency due to the complexity of the data aggregation process based on the shortest path or multicast tree. In this paper we propose three energy efficient and simple data aggregation methods in the domain of cluster and three in the domain of inter-cluster respectively. Based on the comparative performance analysis of the possible combination pairs in the two domains, we derive the best energy efficient data aggregation method for the suggested application.

Early Developmental Characteristics of Induced Hybrids between Rhodeus uyekii and R. notatus (Pisces: Cyprinidae) (각시붕어(Rhodeus uyekii)와 떡납줄갱이(R. notatus) (Pisces: Cyprinidae) 잡종의 초기 발생 특징)

  • Kang, Eon-Jong;Kim, Chi-Hong;Park, In-Seok;Yang, Hyun;Cho, Yong-Cheol
    • Korean Journal of Ichthyology
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    • v.18 no.4
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    • pp.339-346
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    • 2006
  • In this study we conducted artificial hybridization between two sibling species, Rhodeus uyekii and R. notatus, and observed the morphological characteristics in early developmental stage. The two species showed difference in egg shape having rhombus and club respectively. The morphology of yolk of larva just hatched also showed well specific characteristics, that is the bean chaff type for R. uyekii (U type) and anchor type for R. notatus (N type). The rate of fertilization between female R. uyekii and male R. notatus (UN type) and between female R. notatus and male R. uyekii (NU type) were complete and its hatching rate were very high, 71.6% for UN type and 97.5% for NU type. The differences occurred in the yolk shape of hatched larvae for each combination of hybrids. In the group of UN, U type of larvae were found very rarely, but almost all the larvae showed intermediate shape polarized to NN type. Similar phenomenon was observed in the NU having intermediate polarized to UU, but without any NN type. These hybrids will be analyzed for their external morphology, sex ratio, the function of sexual organ and karyology after they grown up to adult.

Implementation of the Color Matching Between Mobile Camera and Mobile LCD Based on RGB LUT (모바일 폰의 카메라와 LCD 모듈간의 RGB 참조표에 기반한 색 정합의 구현)

  • Son Chang-Hwan;Park Kee-Hyon;Lee Cheol-Hee;Ha Yeong-Ho
    • Journal of the Institute of Electronics Engineers of Korea SP
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    • v.43 no.3 s.309
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    • pp.25-33
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    • 2006
  • This paper proposed device-independent color matching algorithm based on the 3D RGB lookup table (LUT) between mobile camera and mobile LCD (Liquid Crystal Display) to improve the color-fidelity. Proposed algorithm is composed of thee steps, which is device characterization, gamut mapping, 3D RGB-LUT design. First, the characterization of mobile LCD is executed using the sigmoidal function, different from conventional method such as GOG (Gain Offset Gamma) and S-curve modeling, based on the observation of electro-optical transfer function of mobile LCD. Next, mobile camera characterization is conducted by fitting the digital value of GretagColor chart captured under the daylight environment (D65) and tristimulus values (CIELAB) using the polynomial regression. However, the CIELAB values estimated by polynomial regression exceed the maximum boundary of the CIELAB color space. Therefore, these values are corrected by linear compression of the lightness and chroma. Finally, gamut mapping is used to overcome the gamut difference between mobile camera and moible LCD. To implement the real-time processing, 3D RGB-LUT is designed based on the 3D RGB-LUT and its performance is evaluated and compared with conventional method.