• Title/Summary/Keyword: Intercepted

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Relation of Run- off and Canopy Interception to Rainfall in a Mixed Forest (혼효림(混淆林)에서 강우량(降雨量)이 유출량(流出量) 및 수관차단률(樹冠遮斷率)에 미치는 영향)

  • Lee, Sang Hwan
    • Journal of Korean Society of Forest Science
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    • v.35 no.1
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    • pp.36-38
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    • 1977
  • Some characteristics of rainfall interception and surface runoff from total rainfall at a forest stand mixed with Pinus densiflora and Alnus hirsuta in 1975 was analysised and the results obtained are as fellow; 1. The annual interception of rainfall by the forest canopy was 19.3 percent to annual rainfall 1,072.7mm. 2. The rate of rainfall interception in the dry season as spring and early summer was of 20 to 50 percent and less than 15 percent in the rainy season as summer. 3. About 50 percent of rainfall was intercepted in case of less than 10mm of every rainfall by the forest canopy and, in more than 20mm, about 20 percent intercepted.

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Secured Search and Rescue Signal using COSPAS-SARSAT (COSPAS-SARSAT을 이용한 탐색구조 신호 보안)

  • Baek, Yoojin;Cho, Taenam;Kim, Jaehyun;Lee, Sanguk;Ahn, Woo-Geun
    • Journal of Institute of Control, Robotics and Systems
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    • v.20 no.2
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    • pp.157-162
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    • 2014
  • The international COSPAS-SARSAT program is a satellite-based search and rescue distress alert detection and information distribution system and best known as the system that detects and locates emergency beacons activated by aircraft, ships and so on. However, the current message format of the system is not encrypted so that, if the rescue signal can be intercepted by the unintended receivers, the subsequent rescue activities can be handled in a hostile environment. So, this article concerns how to deal with the rescue signals in a secure way and proposes some adequate encryption methods and the corresponding key management.

On Some Unrecorded Species of Scolytidae (Coleoptera) from Korea (한국산 나무좀과 해충의 미기록종에 관하여)

  • Choo H.Y;Woo K.S.;Park K.N.
    • Korean journal of applied entomology
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    • v.22 no.3 s.56
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    • pp.174-180
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    • 1983
  • Five species, Hypothenemus californicus, Coccotrypes carpophagus, Othotomicus angulatus, Tomicus brevipilosus and Xyleborus seriatus were recognized firstly from Korea. Two species of them, H. californicus and C. carpophagus were preserved at Life Science Museum of Brigham Young university in U.S.A. X. seriatus intercepted at Kobe in Japan from imported yew log which had shipped at Nampo in North Korea was sent by Dr. F. G. Browne in England. Thirteen recorded species were also examined in this study.

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The Relationship between Photosynthetic Active Radiation and Leaf Orientation (光合成有效放斜와 葉向과의 關係)

  • Chang, Nam-Kee;Heui-Baik Kim
    • The Korean Journal of Ecology
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    • v.8 no.2
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    • pp.99-107
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    • 1985
  • Photosynthetically Active Radiation (PAR) affects the growth of plants as well as their photosynthetic rates. A mathematical model for intercepted solar radiation on the tilted leaf with any azimuth angle was established and the leaf orientation in which receives the maximum solar radiation was determined each month, during the growing season, and for an year. PAR was maximized at the leaf elevation of 50。~60。 in the winter, at that of 20。~40。. On the whole the leaves of tilt angle 0。~40。 received much radiation comparing with those of other tilt angles. The theoretical tendencies were compared with the distribution of leaf orientation measused practically. The average leaf elevation of maple tree was 17.0。$\pm$12.0。, and that of ginkgo was 29.8。$\pm$16.0。. Several results from other literatures support our suggestion that cumulative effevct of the relationships between surface normal vector and a vector pointing in the direction of the radiation determine the leaf orientation.

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Effect of Kangdangboeumbang on the Anti-diabetic Activity in NOD Mice (강당보음방이 자가면역 당뇨모델인 NOD mice의 혈당강하에 미치는 영향)

  • Song Ho Cheol;Kim Sung Hoon
    • Journal of Physiology & Pathology in Korean Medicine
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    • v.18 no.6
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    • pp.1628-1634
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    • 2004
  • This study was aimed to verify the anti-diabetic activity of Kangdangboeumbang(KBB) in NOD mice which is Insulin Dependent Diabetes Mellitus(IDDM). The reduction of blood glucose after oral administration between 14 weeks by 2 weeks period to a NOD mice in KBB extract treatment group was showed from 7 day after comparing with control group. KBB extract treatment group increasd insulin secretion amount of serum than control group and decreased IFN­γ production. The pancreatic β-cells is destroyed by Th1-dependent autoimmune disease in NOD mice. KBB extract treatment group intercepted the progress of edematous islet controlling inflammatory mononuclear cells of infiltration that also destruction of pancreatic β-cells electively in a NOD mice.

Analysis of nonlinear sequences based on shrinking generator (수축생성기에 기반한 비선형 수열의 분석)

  • Choi, Un-Sook;Cho, Sung-Jin;Kim, Han-Doo;An, Hyun-Joo
    • The Journal of the Korea institute of electronic communication sciences
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    • v.5 no.4
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    • pp.412-417
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    • 2010
  • In this paper, we analyze the properties of nonlinear sequence generated by the shrinking generator. Also we propose a method for recovering the original sequence from intercepted bits by analyzing phase shifts of the output sequence using the properties of sequences generated from control register.

A STUDY ON CALCULATION OF ILLUMINANCE DISTRIBUTION IN COMPLEX INTERIOR USING MONTE CARLO SIMULATION (몬테카를로 시뮬레이션을 적용한다면 실내공간내의 조도계산에 관한 연구)

  • Kim, H. C.;Kim, H.;Chee, C. H.
    • Proceedings of the Korean Institute of IIIuminating and Electrical Installation Engineers Conference
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    • 1992.11a
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    • pp.25-29
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    • 1992
  • In this paper, The Monte Carlo Simulation is performed in complex geometries which are composed of obstacles intercepted path of photon. Light is assumed to be particle and has particular direction and weighting value. The illuminance distribution is calculated proportional to the summation of weighting values striking area element. The result of simulation is consistent with that of experiments in a few error.

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Analysis of Shrinking Generator Using Phase Shifts (위상이동차를 이용한 수축 생성기의 분석)

  • Hwang, Yoon-Hee;Cho, Sung-Jin;Choi, Un-Sook
    • Journal of the Korea Institute of Information and Communication Engineering
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    • v.14 no.11
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    • pp.2507-2513
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    • 2010
  • In this paper, we show that the shrinking generator with two LFSR whose characteristic polynomials are primitive is an interleaving generator and analyze phase shifts in shrunken sequence. Also for a given intercepted sequence of shrunken sequence, we propose. the method of reconstructing some deterministic bits of the shrunken sequence using phase shifts.

Seed-borne Brachycladium penicillatum Intercepted under Plant Quarantine Inspection in Korea

  • Hyun, Ik-Hwa;Chang, Seo-Yeon;Lee, Moon-Young;Kim, Min-Kyung;Choi, Woo-Bong
    • Mycobiology
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    • v.40 no.3
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    • pp.205-207
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    • 2012
  • A fungus detected from the importing seeds of Papaver rhoeas under plant quarantine inspection in Korea was identified as Brachycladium penicillatum Corda. It differed in morphological characteristics from a similar species, B. papaveris, which was known to form no macroconidiophores and no microsclerotia. Since the first interception in 2006, this fungus has frequently been found from importing seeds of Papaver spp. It was detected from 31 out of 282 seed consignments imported from 2006 to 2011. To prevent its introduction to Korea, the seed consignments infested by B. penicillatum were destroyed or reshipped.

Estimation Method of Wind Resource Potential Using a National Wind Map (국가바람지도에 의한 풍력자원 잠재량 산출방법)

  • Kim, Hyun-Goo;Jang, M.S.;Kim, E.I.;Lee, H.W.;Lee, S.H.;Kim, D.H.
    • 한국신재생에너지학회:학술대회논문집
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    • 2008.10a
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    • pp.332-333
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    • 2008
  • This paper presents an estimation method of national wind resource potential using a national and GIS(Geographical Information System). The wind resource potential is classified into theoretical, geographical and technical potentials and each category narrows down the previous definition by excluding impossible area to be developed as a wind farm using GIS datasets for onshore and offshore. As a basic unit of wind energy potential at a certain area, API(Average Power Intercepted) is calculated from WPD(Wind Power Density) given by a national wind map which is established by numerical wind simulation, so that a logical and relatively accurate potential estimation is possible comparing with other methods based on a field measurement interpolation which is inevitable to avoid critical assumptions.

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