특집 : 박봉규 부회장 정년기념 ; 인사말: 정년퇴임을 맞이하면서…

박봉규 한국지역사회발전학회 ( 구- 한국지역사회개발학회 ) 2005 地域社會開發硏究 Vol.30 No.1

Cu-Zn-Al 形狀記憶合金에서 變態溫度에 미치는 熱cycle의 影響 : Cu-Zn-Al 형상기억합금에서 변태온도에 미치는 열cycle의 영향

박봉규 釜山大學校 工科大學 1987 工科大學 硏究 報告 Vol.34 No.-

濟州道 野草地에 있어서의 放牧이 미치는 植物社會學的 硏究

朴奉奎 梨花女子大學校 韓國生活科學硏究院 1969 韓國生活科學硏究院 論叢 Vol.2 No.-

本調査는 北濟州郡의 관음寺(海拔 約 700m)를 中心으로 攪亂壓이 均質하게 加해진 A. B. C.地所에서 각각 (1x1)m 크기의 Quadrat로 20개式 標集하였다. 調査形質은 頻度, 草高, 莖數, 現存量을 測定하여 積算優占度로 群落型을 決定하였다. 調査는 1968年 6月 22日∼26日까지 하였다. 調査結果는 다음과 같다 ① A. B. C 地所에서 植生遷移는 生重量을 指標로 하였을 때 Fig.2와 같다. ②攪亂壓이 甚하여짐에 따라 억새型草地→고사리型草地→잔뒤型草地로 移行하는 系列이 뚜렷이 나타났다. ③ Fig.2에서 群落型 사이에는 相關關係아 있었다. ④ 3群落型(A.B.C.地所)의 構成種의 量에 현저히 差가 있었다.(Table 1) ⑤ 3群落型에서 全生重量은 A>B>C로 낮아지고 現存量은 억새가 A>B>C인데 反하여 고사리, 禾本類, 콩科植物, 灌木類 및 其他草種群은 A<B<C의 順으로 높아졌다. (Table 2) ⑥ 群落型과 草種 사이의 관계는 出現頻度의 類型으로 4-group를 類別할 수 있었다. (fig. 3) ⑦ A. B. C. 地所의 各群落型에서 出現草種과 出現頻度로 遷移過程에 따라 出現草種의 增感이 있었다. ⑧各群落型에서 階層構造와 現存量과의 關係를 보았다. (Fig. 5) ? 出現하는 草種數는 下層에 많으나 現存量에서 優占種은 높은 値를 나타냈다. 以上의 結果에서 제주도의 草地는 攪亂壓의 作因으로 草種相互間에 遷移系列에서 Competition 現象이일어나고 있음을 確認할 수 있었다. This survey has been conducte by sampling 20 pieces of 1 squaremeter Quadrat each from the sites A, B, and C whose surface Disturbance was applied to equally, and those sites are located in the neighborhood of the temple Kwan-um-sa in Cheju island approximately 700 meters high at sea level. Geology (the nature of the soil) has been estimated by measuring frequncy, height number of stem and standing crops on the sites and the community type was obtained by summed dominace ratio. This experiment had been made made from June 22 to 25, 1968. The results as are following. 1) Plant Succession at the sites A,B, and C is shown in (Fig. 2) when fresh weight is used as an index to it. 2) Biotic pressures are intensive, the succession sere goes as following: Miscanthus type→Pteridium type→Zoysia type 3) The relationships among those community types are shown in Fig.3. 4) Those communities composed of three, types show remarkable differences in the quantity of the Plants (Table 1). 5) The total quantity of fresh weight in three community types has decreased from the greatest to the smallest in the following order: A→B→C The above tendency has reversly decreased with the case in standing crop, Miscanthus and other types of Vegetations (Table 2) 6) The relationship between the community type and vegetation has been classified into four groups accrding to the frequency of their appearance (Fig. 3). 7) The appearance of the vegetation in each community types has increased and decresed in quantity, in proportion to it's frequency and transition. 8) The relation between the structure of stratum and standing crop has been confirmed in each community types. According to the result of above articles, the phenomenon of competition in succesion sere among different vegetation on another has been confirmed according to the disturbance in the grassland in Cheju island.

草地植生과 soil-pH에 관한 연구

박봉규 梨花女子大學校 韓國生活科學硏究院 1971 韓國生活科學硏究院 論叢 Vol.7 No.-

1) soil pH와 주요초종의 檢査數値로 각초종의 ecological amplitude의 range를 推定할 수 있다. 2) soil pH 6.0∼6.4에서 productivity가 peak 달했다. 3) pH element로 typical status는 6.0∼6.4고, 이것을 기준으로 ecological distance를 추정할 수 있다. 4) soil pH는 loss on ignition과 正의 相關關係가 있었다. 1) The pH range of the main herb species studied was found be from 4.0 to 8.4 2) The main herb preductivity showed a peak (2498/m^2) when the soil pH was 6.0-6.4 3) The typical status by pH was from 6.0 to 6.4 and ecological distance could be decided by standardizing This. 4) Soil pH had positive correlation with loss on ignition.

정지궤도복합위성 표류궤도 진입 오차해석

박봉규,최재동 한국항공우주학회 2015 한국항공우주학회 학술발표회 논문집 Vol.2015 No.11

천리안위성을 대체하기 위해 한국항공우주연구원에 의하여 개발되고 있는 GEO-KOMPSAT-2A 및 GEO-KOMPSAT-2B는 2018, 2019년에 발사될 예정이다. GEO-KOMPSAT2는 Ariane V에 의하여 발사되어 전이궤도에 진입하게 되며, 진입후에 위성에 탑재된 액체원지점엔진을 수 차례 분사하여 표류궤도에 진입하게 된다. 이때 액체원지점엔진 분사 시점, 시간 및 분사간의 간격 등은 목표하는 표류궤도의 경도 및 표류 속도를 획득하기 위해 정밀하게 조정이 되어야 한다. GEO-KOMPSAT-2의 경우는 표류궤도 진입을 위해서 4회 혹은 5회의 액체원지점엔진 분사를 수행할 예정이다. 본 논문에서는 먼저 여러가지 제한조건을 고려하여 GEO-KOMPSAT-2의 액체원지점엔진 분사계획을 수립하고, 표류궤도 진입오차 분석, 지상국 가시성 분석 및 오차요인에 의하여 추가적으로 요구되는 연료량을 분석하기 위해 오차해석을 수행하였다. 고려된 오차는 전이궤도 진입오차, 자세제어 오차, 궤도결정오차 및 액체원지점엔진 모델오차이다. 오차분석을 위하여 Monte-Carlo 시뮬레이션을 적용하였다. GEO-KOMPSAT-2A and GEO-KOMPSAT-2B which are under development by KARI to replace the COMS will be launched in 2018 and 2019 respectively. GEO-KOMPSAT-2 will be launched and injected into GTO(Geostationary Transfer Orbit) by Ariane V launcher. After injection to GTO, the satellites are transferred to drift orbit by applying a series of LAE(Liquid Apogee Engine) burns. The burn epoch time, durations and intervals are selected in order to place the satellite as close as possible to the target drift longitude or at drift start longitude. For GEO-KOMPSAT-2, four or five LAE burns will be applied for drift orbit injection. In this paper, LAE burn plan has been established for GEO-KOMPSAT-2 considering expected constraints, and error analysis have been performed in order to assess drift orbit injection accuracy, and to estimate ground visibility and additional propellant budget. Four types of error sources have been considered; transfer orbit injection error, attitude control error, orbit determination error, and LAE model uncertainties. As a means of error analysis, Monte-Carlo simulation studies have been performed.

서울 近郊 道峰山 地域의 環境評價의 方法에 關한 硏究

朴奉奎 梨花女子大學校 韓國生活科學硏究院 1985 韓國生活科學硏究院 論叢 Vol.36 No.-

1984年 5月∼1985년 8月까지 北漢山 國立公圍에 包含되어 있는 道峰山地域 一帶의 環境評價手法에 關한 硏究에서 ① 植生分布槪念圖 ③ 植生自然度圖 ③ 傾斜度圖 및 谷密度圖 ④ 植生評價圖 ⑤ 地域評價域 ⑥ 自然景觀評價圖 ⑦ 水系環境評價圖⑧ 綜合評價圖을 作成하여 地域環境管理計劃의 基本資新를 提供하고져 하였다. 1. The Mt. Dobongsan region in located at approximately 12km east-northern of Seoul city. It is hilly and mountainous with an area of about 22.75km^2. The vegetation of the region was originally represented by cold-temperate, coniferous and deciduous broad-leaved forests. 2. Following vegetation types were differentiated by the physiognomicai method in the Mt. Dobongsan region from May, 1984 to August, 1985: 1. Pinus densiflora community 2. Quercus mongolica community 3. Alnus japonica community 4. Acer palmatum community 5. Quercus serrata community 6. Quercus dentata-Lespedeza bicolor community 7. Miscanthus sinensis-Pueraria tunbergiana community 8. Castanea crenata-Quercus acutissima community 9. Robinia pseudoacacia community 10. Plant community 11. Abandoned field weed community 12. Cultivated field weed community 13. River-side field weed community 14. Weed community in constructed land 3. The concept map of actual vegetation of the region was drawn at a sacle of 1:25,000. 4. A map of the nature-degree of vegetation was drawn at a scale of 1:25,000 based on the actual vegetation map. The nature-degree of vegetation is a measure of naturalness of the vegetation and it is graded according to the degree of Human interference which the vegetation suffers. 5. The landscape and the configuration in the Mt. Dobongsan region was drawn at a scale of 1: 25,000 based on the topographic criterion. And some map showing the evaluation of landscape and configuration were drawn at a scale of 1: 25,000. 6. The status of river environment in the region were diagnosed on the basis of the criterion of river environment and the nature-degree of river environment were drawn at a scale of 1: 25,000 in the region. 7. The synthetic evaluation of environmental factors in the region were drawn at a scale of 1: 25,000. The purpose of this study is to get the fundamental data of the planning for the management of regional environment. Therefore, the status of natural environment in the Mt. Dobongsan region was diagnosed based on the synthetic evaluation of environmental factors such as vegetation, landscape, configuration and river environment.

韓國의 草地型

朴奉奎 한국식물학회 1966 Journal of Plant Biology Vol.9 No.3-4

The investigation on the grassland type was conducted by the data in the previous theses (Park 1963, '64, '65, '66). The results obtained are as follows; 1) I defined that the relationship between the valves of DS and the main species of the grass in Korea(Table I) Grassland Stage; Waste type ‥‥‥6 community-types Short grass type ‥‥‥3 community-types Pteridium type ‥‥‥1 community-types Tall grass type ‥‥‥4 community-types Sasamorpha type ‥‥‥1 community-types Shrubby Stage; Lespedeza type Pioneer tree type ‥‥‥6 species Forest Stage; Deciduous broad leave tree type ‥‥‥6 species Evergreen broad leaved tree type ‥‥‥3 species Evergreen needle leaved tree type ‥‥‥7 species 2) I defined: that the relationship between the valves of DS and the grassland type in Korea(Table 2). Of grassland type, the range of valves of DS, 50-220 belongs to waste type; 130-310 short grass type; 230-640 tall grass type; 210-450 pteridium type; 510-970 sasamorpha type; 730-1450 shrubby type; 3) I decided; The succession stage centering on the Sasamorpha purpurascens in Korea(Table 3). 4) I decided the climate type and the grassland succession in Korea(Table 4).

漢江 下流 氾監原地形에 있어서의 野草地植生의 動態에 관하여

朴奉奎 梨花女子大學校 韓國生活科學硏究院 1979 韓國生活科學硏究院 論叢 Vol.24 No.-

1979年 5月 ~ 1979年 8月 사이에 漢江河流 氾濫原地形 野草地植生을 Curtis의 ordination method, Whittaker의 gradient analysis로 分析하여 얻은 結果는 다음과 같다. 1. 79 dtands에서 12種의 indicator species와 이 indicator species를 4-group으로 分類했다(Table.1). 2. 氾濫原의 floodplain topography segment의 四區劃에서 4-group의 compositional index의 分布 pattern에 뚜렸한 區別이 있었다<Fig.2>. 3. 氾濫原의 floodplain topography segment의 四區劃에서 4-group의 compositional index와 平均出現頻度와의 관계에서 잔디, 달맞이꽃, 사철쑥, 달뿌리풀의 行動樣式이 뚜렷이 區分되었다. 4. 氾濫原의 floodplain topography segment의 四區劃에서 地型傾斜度에 따라서 4-group의 compositional index의 分布pattern에 뚜렷한 差異를 나타냈다(Fig.4). 5. 漢江 下流 氾濫原地形의 植生圖表를 作成했다(Fig.5,6). The purpose of this study was to obtain ecological phytosociological information concerning the dynamaics of native grassland vegetation at the floodplain topographical level on the lower Han River. The present paper is based on data from 79 stands. The area studied was the floodplain along the main courses if Han River, and ranges from Paldang, where the Southern Han River joins with the Northern Han River and flows northwest, to Jamsil Dong. The area was divided into three parts, the Misa. Dangjung Area, the Topyung, Sukdo area and the Poongnap, Chunho area for the convenience of investigation and constructuing a vegetation chart. A comparison of present structural forms with past ones was carried through an investigation into the topographical formation of the floodplain. Those structural forms include land forms of the flood plain. natural levels, back marshes and the process of change in the floodplain. The constructed vegetation chart provided much information concerning the vegetational continum along the gradient of disurbance degrees by flood pressure. The continuum ranges are as follows: 1) A Zoysia japonica community occurred on steep slopes under slight disturbance. 2) An Oeonothera odorata - Artemisia capillaris community occurred on moderate slopes under moderate disturbance. 3) A Phragmites prosturatus community occurred on flat sites under heavist disturbance. The distributional behavior of plant species was examined and illustrated by drawing isorhythms of the occurrance frequency on the vegetation chart. The results indicate that species are distributed in a contour-shaped pattern.

정지궤도위성의 궤도획득 시뮬레이션 연구

박봉규,노태수,김성규 한국항공우주학회 1994 한국항공우주학회 학술발표회 논문집 Vol.- No.-

표적추적을 위한 개선된 Bogler 알고리듬

박봉규,이훈구,탁민제 한국항공우주학회 1994 한국항공우주학회 학술발표회 논문집 Vol.- No.-