업무개선에 대한 소고

박광우,Park, Gwang-U 한국건강관리협회 1987 건강소식 Vol.11 No.3

이번 3월호 부터는 지난 1월 한달간 3급직 이상을 대상으로 협회 발전을 모색하기 위하여 공모한 논문중 우수논문을 선정 월별로 게재할 예정이오니 많은 참고 바랍니다.

2매 비구면 렌즈로 구성된 폰 카메라에서 미광 분포에 대한 연구

박광우,이종웅,Park, Kwang-Woo,Lee, Jong-Ung 한국광학회 2009 한국광학회지 Vol.20 No.1

A mobile phone camera consisting of two aspheric lenses is designed, and stray light distribution on the image plane is analyzed. We assume that most of the incident light is absorbed on the inner surfaces of the lens barrel and spacers, only a small fraction of the light is scattered uniformly. Assuming that 10% of the incident light is scattered on the barrel and spacers, the maximum value of stray light is 7.1% of the ideal image intensity. The result of analysis shows that stray light originated mostly from internal reflection on the ribs. The contributions of scattering by the barrel and spacers are relatively small. To reduce the internal reflection, thin absorbing plates are inserted between lenses, and the shapes of spacers are modified. After the redesigning of the lens barrel, the maximum value of stray light is reduced to 1.1% of the ideal image intensity. 2매의 비구면 렌즈로 구성된 카메라 폰 렌즈를 설계하고 상면에서 미광의 분포를 분석하였다. 미광분석에서는 렌즈 경통의 내면과 스페이서에서 대부분의 입사광은 흡수하고 일부만 균일하게 산란하는 것으로 가정하였으며, 경통과 스페이서에서 10%가 산란된다고 가정할 때, 미광의 최대치는 이상적인 상의 강도의 7.1%였다. 이 분석을 통하여 대부분의 미광은 렌즈 리브에서의 내부반사에 의하여 발생하며, 경통과 스페이서에 의한 산란의 기여는 상대적으로 작음을 알 수 있었다. 내부반사를 줄이기 위하여 렌즈사이에 얇은 흡광판을 삽입하고 스페이서의 모양을 수정하였으며, 경통의 재설계 후에는 산란광의 최대치가 이상적인 상의 강도의 1.1%로 감소하였다.

한국산 단풍나무속의 잎의 형태 및 해부학적 연구

박광우,김삼식 ( Kwang Woo Park,Sam Sik Kim ) 한국산림과학회 1984 한국산림과학회지 Vol.64 No.1

This study was intended to identify 17 taxa. (5 varieties and 12 species) of the genus Acer in Korea on the basis of the shapes of stomata, the type of trichome on the different part of leaves, the shapes, arrangement and number of stele in cross section of petiole. The results obtained were summarized as follows; 11 The shape of guard cells of stomata in the genus Acer was anomcytical, and the size of the cells ranged from 10.25 to 21.00 μ in length and from 7.57 to 11.83 μ in width. 2) Eleven types of trichome on the leaf in the genus Acer were found; pilose, sericeous, velutinous, woolly, glabrate, puberulent, bladder hair, hispid, hirsute and uncinate. This characteristics also established a good criterion for identification of species. 3) The stele of petiole in the genus Acer was characterized by eustele and atactostele with polybranch, and the six groups of the shape of numerical change of stele; B$gt;M=T, B$lt;M=T, B=M=T, B$gt;M$lt;T, B$lt;M$lt;T, B=M$lt;T were found at Three parts of petiole, where, B : the number of ramified stele at the base part of petiole, M : the number of ramified stele at the middle part of petiole, T : the number of ramified stele at the terminal part of petiole. 4) The shapes of petiole in cross section of the genus Acer were a, b, c, d, e, f and g shape. The $quot;b$quot; shape appeared in 7 species and had the hightest appearance frequency. The $quot;a$quot; and $quot;c$quot; shape appeared both in 4 species. The $quot;g$quot; shape appeared in 3 species. And the $quot;d$quot;, $quot;e$quot; and $quot;f$quot; shape appeared in 2 species. In conclusion, it was possible to identify 17 taxa. of the genus Acer in Korea by the shape of stomata, trichome and the shape, arrangement, and number of stele in cross section at three parts of petiole.

단풍나무속 수종의 (數種) 엽병 유관속지 (維管束枝) 변화형에 관한 연구

박광우,김삼식 ( Kwang Woo Park,Sam Shik Kim ) 한국산림과학회 1986 한국산림과학회지 Vol.73 No.1

This study was done to classify 15 species in the genus Acer through tracking of the changing shape of the vascular branch from the base part to the terminal part of petiole by the anatomical method. The basic vascular branches were 3 ea, except A. mandshuricum 3-4 ea. The vascular bundle was separated, moved and connected from the base part to the terminal part of petiol, the number of separated vascular branch was 11-32 ea., the number of connected vascular branch was 0-17 ea.., and the ratio of the separated vascular branch to the connected was 0.00-8.00. The maximum number of vascular branch in No, 39 of cross section part was observed in 12 species; A. ginnala and A. buergerianum were No. 11, A. truncatum and A. platanoides were No. 13, A. saccharium was No. 26. The number of the connected vascular branches with the main vascular branch were 0-6, while the number of the separated vascular branch were 0-7. On the ratio of separation to connection of the base vascular branch; $quot;A$quot;, $quot;B$quot; and $quot;C$quot;, the symmetrical shapes on the basis of $quot;B$quot; were A$gt;B$lt;C and A=B=C shape, the asymmetrical shape were A$lt;B$gt;C, A$lt;B$lt;C and A$gt;B$gt;C shape. The classical groups by the development of main vascular branch formation were obtained 7 groups of $quot;a$quot; through $quot;g$quot; shape. Especially, A. negundo and A. saccharinum were shown to have central vascular branches with unique changing patterns.

한국산 단풍나무속 목재식별에 관한 연구 - 심재 지질의 (脂質) TLC 에 의한 방법을 중심으로 -

박광우,김삼식 ( Kwang Woo Park,Sam Sik Kim ) 한국산림과학회 1984 한국산림과학회지 Vol.65 No.1

This study was identified 6 species of the genus Acer in Korea by the method of thin layer chromatography on lipids in heart wood, and researched affinity among the species for the characteristics of color reaction. The results were summarized as follows; 1) Total-lipid in heart wood of the six species was 4.39%, mean free-lipid was 2.85% and mean bound-lipid was 1.54%. 2) All the six species; A. ginnala, A. mono, A. negundo, A. palmatum, A. saccharinum and A, triflorum were identified by the characteristics of color reaction. Judging from the color reactions, A. palmatum and A. triflorum seem to be closer than other species.

우리나라보석 귀금속 수출산업의 현황과 문제점 및 대책 - 이리귀금속공단을 중심으로 -

박광우(Park Kwang Woo) 한국중소기업학회 1980 中小企業硏究 Vol.4 No.1

N/A

한국산 Prunus 속 수 (數) 종의 (種) 엽밀선의 (葉蜜腺) 형태에 관한 연구

박광우(Kwang Woo Park),정우홍(Woo Hong Chong) 한국산림과학회 1990 한국산림과학회지 Vol.79 No.4

Morphological characters on the leaf nectar gland of Korean Prunus 4 species and 1 form were observed by SM. The results were summarized as follows ; The shapes of nectar gland on the plane figure were two, the circular and the irregular ovate. The species of circulr shape were P. maackii, P. maximowiczii, P. sargentii and P. yedoensis. The irregular ovate shape was only one species, P. pendula for. ascendens. The shapes of nectar gland on the side figure were the reentrant apices and the rounded. The reentrant apices were two shapes. First, the species of the center reentrant was three, P. madckii, P. sargentii and P. yedoensis . Seconei, the species of the irregular reentrant was P. pendula for. ascendens. The rounded apex was only one species, P. mazimotuiczii . Especially on the P. pendula for, ascendens, the upheaval situation on surface of leaf blade was due to the sinking of reverse part of leaf blade at the nectar gland. The point of this abnormal shape was well distinguished from the other species. On the frequency by the part of leaf with nectar gland, the species to be observed only at the leaf base was P. pendula for. aseendens, the other species was observed two part of leaf base and petioles. In this study, some Prunus species were well keyed out on the basis of the morphological characters of leaf nectar gland.

탁엽의 (托葉) 형태적 특징에 의한 한국산 단풍나무속의 분류학적 연구

박광우 ( Kwang Woo Park ) 한국산림과학회 1984 한국산림과학회지 Vol.67 No.1

Taxonomical studies of the genus Acer in Korea (8 species, 3 varieties and 1 forma) were studied by the morphological chracteristics of stipules. The results obtained were summarized as follows; 1) The stipules of the genus Acer were arranged oppositely with 4 - 10 stipules consisting of simple leaf, compound leaf and unifoliate compound leaf. The venation of stipules were cladodromous, basal reticulate, fibrous and palmately netted vein. The trichoma of stipules were glandula hair, glandular pubescent, sericeous, pilous, vinous, velutinous, tomentose, ciliate and lanate. As the morphological characteristics of stipules in the genus Acer established a strong point in the identification of species. 2) The species in the genus Acer in Korea were classified into six groups; (1) ginnala group (A. ginnala), (2) koreanum group (A. koreanum, A. japonicum, A. pseudosieboldianum var. koreanum), (3) mono group (A. mono, A, palmatum var. sanguineum, A. palamtum var. dissectum, A. palmatum var. dissectum f. aosidare), (4) negundo group (A. negundo), (5) palmatum group (A. palmatum), (6) platanoides group (A. platanoides, A. truncatum) by the morphological characteristics of stipules, 3) The stipules of platanoides group and negundo group were the least evolved types among the species in the genus Acer. 4) The stipules in the genus Acer were made the inner buds that were metamorphosed to the protected functional aspect by the evolution of petiols.

고산지대 산화적지의 (山火跡地) 식물생태에 관한 연구 - 지리산의 제석봉 ( 1,806m ) 지역을 중심으로 -

박광우(Kwang Woo Park),정성호(Song Ho Chung) 한국산림과학회 1990 한국산림과학회지 Vol.79 No.1

The purpose of this study is to investigate the developmental process of plant community during the secondary succession through the analysis of floristic composition, life form etcectra in burned site, and the structure of forest stand before forest fire occurrence was estimated by the method of anatomical wood identification for dead trees in burned site, Cheisuk-bong in Mt. Chiri of Korea. Plant community before forest fire occurrence was estimated the high mountain conifer stand of the last successional stage to consist of Pinus koraiensis(75%), Abies koreana(15%) and Picea jezoensis(10%), and Betula costala was survived only one species after forest fire occurrence. The total number of plant species in the investigated area was 19 families and 23 species that was identified. The dominate species in burned site were Festuca ovina and Arrhenatherum elatius, Carex humilis, Ligularia fucheri etcectra in the investigated area flora. The life form of plant in burned site was the erect from 47.8%, the tufted from 30.4%, the branched and the prostrate from was both 8.7%, It was assumed that dominant species in the burned sites were Gramineae (Festuca ovina, Arrhenatherum elatius), Carex humilis → Sorbus conamixta, Rhododendron schrippenbachii, Sambucus williamsii var. coreana, Tripterygium regelii → Acer pseudo-sieboldianum var. koreanum, Betula costala, Quercus mongolica → Pinaceae forest(Pinus koraiensis, Abies koreana, Picea jezoznsis).

기업지배구조와 주주부의 배분에 관한 연구

박광우(Kwang Woo Park),박래수(Rae Soo Park),황이석(Lee Seok Hwang) 한국증권학회 2005 Asia-Pacific Journal of Financial Studies Vol.34 No.4