• 제목/요약/키워드: Park In Joon

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치악산 국립공원의 개미 (Ants from Chiaksan National Park)

  • 박성준;김기경;김중현;김병진
    • 한국토양동물학회지
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    • 제3권1호
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    • pp.25-34
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    • 1998
  • During April, 1991 to September, 1997, ants had been collected in Chiaksan National Park, Kangwon Province. Examining all the collections from this area, 20 species of 11 genera under 3 subfamilies had been identified.

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Aging-Related Changes in Hand Intrinsic and Extrinsic Muscles and Hand Dexterity : an MRI Investigation

  • Hsu, Jeffrey;Koh, Kyung;Park, Yang-Sun;Kwon, Hyun-Joon;Kim, Yoon-Hyuk;Shin, Joon-Ho;Shim, Jae-Kun
    • 한국운동역학회지
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    • 제25권4호
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    • pp.371-381
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    • 2015
  • Object : The purpose of this study was to investigate aging-related changes of intrinsic and extrinsic hand muscles in their strength, cross-sectional area and volume, force control, and multi-digit synergies. It was hypothesized that aging would negatively affect distal muscles (intrinsic muscles) more than proximal muscles (extrinsic muscles). Method : Nine young and eleven older right-handed participants underwent MRI scans of the hand and forearm. Muscle cross-sectional areas and volumes of the intrinsic and extrinsic hand muscles were determined. Result : Muscle volume of the intrinsic muscles were larger in the younger group than the older group while muscle volume of the extrinsic muscles did not differ. For the cross-sectional area, both the intrinsic and extrinsic muscles of the younger group were larger than the older group. The maximum strength of the intrinsic muscles of the young group was 31% greater than the older group ($399.1{\pm}26.4$ vs $270.2{\pm}22.9Ncm$, p < 0.05) while the extrinsic muscles showed no significant difference. Although the elderly group showed a trend of decreased force control and multi-digit synergies, no statistical differences were found. These findings indicate aging-related decreases in hand muscle size and strength affect intrinsic muscles more than extrinsic muscles, thus supporting the hypothesis that sarcopenia affects the muscle size and strength of distal muscles more than proximal muscles. Conclusion : The aging-related decreases in hand muscle size and function were more apparent in intrinsic hand muscles, located more distally, than extrinsic muscles, located more proximally.

BIBLOGRAPHY OF GEODEST AND GEOPHYSICS IN KOREA (XXI)

  • Kang, In-Joon;Chang, Yong-Ku;Park, Ki-Tae
    • International Union of Geodesy and Geophysics Korean Journal of Geophysical Research
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    • 제23권1호
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    • pp.52-65
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    • 1995
  • This is the bibliographical compilation of papers in the fields of geodesy and geophysics published in the Republic of Korea during July 1994 to June 1995. Materials were mainly collected from the following publications.

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Two Sample Tests in the Weibull Distribution

  • Park, Won-Joon
    • Journal of the Korean Statistical Society
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    • 제8권2호
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    • pp.99-105
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    • 1979
  • In Thoman and Bain and Schafer and Sheffield, procedures for testing the equality of the scale parameters of two Weibull populations with a common shape parameter and procedures for selecting the Weibull population with the largest scale parameter are given. We give, in this paper, a modified procedure for the above testing and selection problems, which is more powerful than those previoulsy given.

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도로교통 소음지도의 표준 작성절차 연구 (A Study on Standard Procedure of Road Traffic Noise Map)

  • 정우홍;박인선;김지윤;박상규;강대준
    • 한국소음진동공학회:학술대회논문집
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    • 한국소음진동공학회 2007년도 춘계학술대회논문집
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    • pp.613-617
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    • 2007
  • Noise maps of a city in Korea have been made using commercial noise map softwares by measuring the basic data in the city. The result in this study will be used to evaluate the environmental impact of noise from various noise sources and to implement the Korean noise map standard.

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