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A Study on Freeway Weaving Section Analysis (고속도로의 엇갈림 구간 분석에 관한 연구)

  • 최병국;정준화
    • Journal of Korean Society of Transportation
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    • v.10 no.1
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    • pp.21-40
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    • 1992
  • We examine primarily the existing study procedures for freeway weaving section by comparing speed estimates. Most methods have poor predictions because of neglecting the weaving vehicle influ-ence. In this study we develop the speed prediction equation considering the weaving influence area i.e, weaving box. Assuming that speeds outside weaving box are similar to speeds in freeway basic sec-tions we develop speed equation in box based on the field data. Moreover level of service criteria and weaving analysis precedure are proposed under the new speed prediction equation.

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Present Status and Prospects of Oyster Industry in Korea

  • Cho Chang-Hwan
    • Journal of Aquaculture
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    • v.9 no.4
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    • pp.303-309
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    • 1996
  • Oyster is the most important item next to tuna based on the market value in Korea's fisheries exports and it shares more than $90\%$ of the world oyster market. Oyster industry is a vital component of the Korea's aquaculture industry. However, it has faced many problems such as (1) a lower productivity of the culture system, (2) an environmental deterioration of the farming area, (3) a higher labor cost, (4) a shortage of of oysters to export, and (5) a poor seedling in nature. Therefore, including it's business forecast, the above problems and some countermeasures are discussed in this paper.

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Neuronal Vacuolation in a Pekingese (Pekingese에서의 Neuronal Vacuolation)

  • 김재훈;김진현;윤화영;박영찬;김대용;임정식
    • Journal of Veterinary Clinics
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    • v.19 no.2
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    • pp.247-249
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    • 2002
  • A 6-month-old female Pekingese was euthanized due to poor progrosis after 1 month history of neurologic signs that include depression, ataxia, urination and defecation difficulty. At necropsy, no significant gross abnormalities were noted Histologically, neuronal vacuolation was noted in the brain, primarily cerebellum and occasionally in the brain stem area. Neuronal necrosis and secondary axonal swelling were also observed. Differential diagnoses were able to rule out other diseases which can induce neuronal vacuolation such as lysosomal storage disease, prion infection, and postvaccinal change.

Mobile Tracking Based on Area Partitioning

  • Lee, Jongchan;Lee, Moonho
    • Proceedings of the IEEK Conference
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    • 2002.07c
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    • pp.1709-1712
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    • 2002
  • In the microcell- or picocell-based system the frequent movements of the mobile bring about excessive traffics into the networks. A mobile location estimation mechanism can facilitate both efficient resource allocation and better QoS provisioning through handoff optimization. Existing location estimation schemes consider only LOS model and have poor performance in presence of multi- path and shadowing. In this paper we study a novel scheme which can increase estimation accuracy by considering NLOS environment

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상악전돌자의 하악형태에 관한 연구

  • Yang, Won-Sik
    • The Journal of the Korean dental association
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    • v.18 no.3 s.132
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    • pp.197-200
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    • 1980
  • This study was undertaken to investigate the form and position of the mandible of upper prognathism in relation to craniofacial complex. The subjects consist of 20 males and 39 females with Class II, Division 1 malocclusion and measurements were achieved on lateral cephalograms. The results were a follows. 1. Infradentale was situated anteriorly to orbital plane, but point B, pogonion and menton were situated posteriorly. 2. Development of chin point area of female was poor than that of male. 3. In case of facial angle was large, ramus angle tend to be small, but gonial angle had tendency to be large.

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Enhanced Paclitaxel Bioavailability after Oral Administration of Paclitaxel Coadministered with Quercetin in Rats.

  • Choi, Jun-Shik;Kim, Je-Ho;Lee, Jin-Hwan
    • Proceedings of the PSK Conference
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    • 2002.10a
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    • pp.411.1-411.1
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    • 2002
  • The purpose of this study was to investigate the effect of quercetin on the bioavailability of paclitaxel orally coadministered in rats Paclitaxel is reported to be metabolized by cytochrome p-450(CYP3.A,)in both the liver and epithelial cells of small intestine and also absorption of paclitaxel is inhibited by p-glycoprotein efflux Pump in the intestinal mucosa. This resulted in poor orall bioavailability of paclitaxel. Area under the plasma concentration-time curve (AUC) of paclitaxel in combination with quercetin were significantly (p< 0.01) higher than those of control. (omitted)

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Forest Community Structure Analysis of Seooreung Area (서오릉의 산림군락구조 분석)

  • Yee, Sun;Lee, Mi-Jeong;Kim, Hyo-Jeong;Kwon, Oh-Won;Song, Ho-Kyung
    • Journal of the Korean Society of Environmental Restoration Technology
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    • v.7 no.2
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    • pp.62-67
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    • 2004
  • Forest community structure analysis in the Seooreung area, Goyang-si was carried out to supply basic data for reasonable management and conservation. The forest vegetation of the Seooreung area was classified into Alnus japonica community, Quercus mongolica - Carpinus laxiflora community, Quercus serrata community, and Pinus densiflora community. The dominant species in the area were in the order of Quercus mongolica, Quercus serrata, Robinia pseudoacacia, Quercus variabilis, Quercus aliena, Styrax japonica, Pinus rigida, and Alnus hirsuta. According to the DBH analysis result, Pinus densiflora was dominance species in Tomb area. Pinus rigida had a density of normal distribution style in the entire forests, therefore, their dominance are expected to continue for now. However, Quercus serrata is expected to extend their influence in the future in competition with Pinus rigida. Quercus mongolica had a density of normal distribution style in the Quercus mongolica - Carpinus laxiflora community, therefore, their dominance are expected to continue for now. Carpinus laxiflora is expected to extend their influence in the future in competition with Quercus mongolica. The relationship between the distribution of dominant species of forest vegetation and soil condition in Seooreung area was investigated by analyzing soil nutrition and moisture gradient. Alnus hirsuta community was distributed in the mesic and medium nutrition area and Quercus mongolica - Carpinus laxiflora community in the serix and relative good nutrition area. Pinus densiflora community was distributed in the serix and poor nutrition area and Quercus serrata community in the subserix and medium nutrition area.

Screening and Identification of Salt Tolerant Peanut (Arachis hypogaea L) Genotypes under Salinity Stress

  • Rizwana B.Syed Nabi;Eunyoung Oh;Myoung Hee Lee;Sungup Kim;Kwang-Soo Cho;Jeongeun Lee;Jung In Kim;Eunsoo Lee;Min Young Kim;Sang Woo Kim
    • Proceedings of the Korean Society of Crop Science Conference
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    • 2022.10a
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    • pp.113-113
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    • 2022
  • Salinity in surface waters is increasing around the world. Many factors, including increased water extraction, poor irrigation management, and sea-level rise, contribute to this change, and posing a threat to plant development and agricultural production. Seeds exposed to high salinity, have a lower probability of germinating and various physiological and biochemical effects. Salinity stress affects more than 20% of agricultural land and about 50% of irrigated land. In the current study, our objective is to identify the salt-tolerant peanut (Arachis hypogaea L.) Korean genotypes under salinity stress. Thus, two-week-old 19 diverse peanut Korean genotypes were exposed to 10 days of salinity (150 mM NaCl) stress. Based on the growth attributes investigation, Baekjung and Ahwon genotypes showed significantly higher shoot lengths compared to control plants. Whereas, the Sinpalwang genotype exhibited a significantly positive response for plant growth and reduced wilting symptoms compared to other genotypes. This study was able to find out peanut tolerant and sensitive genotypes for salt stress. These results may provide a good template for further salt-tolerant peanut cultivar improvement programs. Identified diverse salt-responsive genotypes can be utilized as source material in Korean breeding schemes for peanut crop improvement for salt and other abiotic stress tolerance.

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A Study on the Acceptability of Health Education Methods in Urban and Rural Area (지역사회주민의 보건교육 매체에 대한 수용도 조사연구)

  • 박귀동;차철환;염용태
    • Korean Journal of Health Education and Promotion
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    • v.4 no.1
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    • pp.65-75
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    • 1987
  • This study was conducted (i) to recommend the high-scored education method as a adaptable method, and (ii) to find the most influential factor among the three acceptability components (feasibility factor, stimulation factor and reliability factor) to urban or rural residents. The accept-ability score of each health education method currently existing in urban and rural area was estimated. A total of 257 households in Guro 6-dong, Seoul, and 233 households in Jeomdong-myeon, Yeoju-gun, were sampled by interview survey using questionnaire. The four types of health education methods used in this study are; printed matter method, mailing service method. personal contact method, and group contact method. The major findings obtained from this research are as follows; 1) In urban area, the highest-scored in terms of acceptability is the personal contact method, followed by the mailing service, the printed matter, and the group contact. The mailing service method is found to be effective especially for the intelligent group people. 2) In rural area, the highest-scored in terms of acceptability is also the personal contact method, followed by the group contact, and printed matter method. In general, the group contact method is effective toward both urban-poor and rural housewives (especially in stimulation factor). To improve the health consciousness of the residents, there arises the need for the existing education program into better organized and diversified one and for educating health-educators by providing in-depth health knowledge.

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Water Balance-based Farmland Suitability for Southern-type Garlic Cultivation (난지형 마늘의 농업수리학적 재배적지 분류)

  • Kim, Yong Wan;Hong, Suk Young;Kim, Yi Hyun;Jang, Min Won
    • Journal of The Korean Society of Agricultural Engineers
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    • v.54 no.6
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    • pp.19-28
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    • 2012
  • This study carried out farmland suitability analysis for southern-type garlic cultivation considering soil and temperature as well as water deficit conditions. The spatial extent was limited within the area derived by Kim et al. (2012) using just soil and temperature constraints. Daily soil moisture was simulated using a one-layer soil water balance model at a $100{\times}100m$ grid unit, and then annual water deficit was calculated from 2000 to 2010. The farmland suitability was classified as four steps: best suitable, suitable, possible, and low productive. As a result, total area of best suitable or suitable farmland was about 375,900 ha, and Gimje-si and Haenam-gun were appeared as the largest favorable area for southern-type garlic cultivation. The best suitable or suitable area at Haenam-gun, Goheung-gun, Shinan-gun, Namhae-gun, and Muan-gun, major production regions of southern-type garlic, were extracted as 20,187 ha, 13,018 ha, 4,715 ha, 1,319 ha, and 349 ha, respectively. On the other hand, the result showed that the adoption of sprinkler irrigation systems might be critical in cultivating the southern-type garlic at some regions having poor water balance.