• 제목/요약/키워드: Geographical conditions

검색결과 469건 처리시간 0.033초

미국 남부지방 도시호우의 종관적 분석 (Synoptic Analysis of Heavy Rainstorms over Urban Areas in the Southern United States)

  • Youngeun Choi
    • 대한지리학회지
    • /
    • 제33권3호
    • /
    • pp.395-409
    • /
    • 1998
  • 미국남부지방의 5개 도시를 연구지역으로 도시의 영향에 의한 강수특성변화를 파악하고 종관기상유형에 따른 특성을 규명하기 위하여 2 인치(50.08 mm) 이상의 일강수량을 가지는 강수일을 선택하여 3가지 강수유형(기단성 강수, 전선성 강수, 열대저기업성 강수)으로 구분하여 분석하였다. Houston, Dallas, 그리고 San Antonio에서는 기단성 강수가 발생할 때, 도시직역과 풍하측에 호우로 인한 강수량과 강수빈도의 증가가 나타나고 있으나 New Orleans와 Memphis에서는 종관적 분석을 통해서 볼 때 현저한 증가현상을 보이지 않는다. 경향면 분석겨로가는 전선성 강수와 열대저기업성강수 발생시 기단성 강수로 인한 호우보다 강한 경향성을 가지는 것을 보여주고, 호우로 인한 통강수량은 강수일수빈도보다 강한 경향성을 가진다. 잔차도 분석결과는 기단성 호우 발생시 도시지역과 풍하지역에 양의 잔차가 나타나는 것을 보여준다. 미국 남부의 5개도시에서 강수특성변화에 미치는 도시화의 영향에 대한 연구는 도시기후는 종관적으로 유사한 조건하일지라도 도시의 규모, 공간구조, 수체의 유무, 산업구조 등 다양한 특성에 따라 상이하게 반응함을 알 수 있었다.

  • PDF

중국(中國) 사천분지(四川盆地) 서부(西部)의 고대(古代) 관개시설(灌漑施設)과 지역적(地域的) 여건(與件) - 도강언(都江堰)의 경우 - (Ancient Dujiangyan Irrigation System and Geographical Conditions in the Western Part of Sichuan Basin in China)

  • 이준선
    • 한국지역지리학회지
    • /
    • 제8권1호
    • /
    • pp.65-82
    • /
    • 2002
  • 중국 사천분지 서부의 도강언 관개시설은 기원전 3세기에 진의 촉군 태수였던 이빙에 의하여 축조되었다. 이 시설은 대규모 거 관개의 효시로서 민강의 곡구에 입지한다. 이 지점은 이 지역에서 남쪽의 장강으로 합류하는 다른 강들의 곡구보다 해발고도가 높아 관개의 효율성이 크고, 강수량, 하계 등의 여건상 풍부한 유량을 지닌다. 이런 점에서 이 지점은 일찍이 거 관개시설의 입지로 선정되었다. 이 시설은 곡구에서 유수를 양분하는 '금강제'와 '어취', 유로변경을 위한 '보병구' 그리고 홍수와 토사를 배출하는 '비사언' 등으로 구성되었다. 이들은 상호 유기적으로 수재와 갈수 현상을 동시에 방지하였다. 여기에는 유수의 곡류현상과 침식, 운반. 퇴적작용, 그리고, 암석의 풍화과정 등의 원리가 이미 적용되었다. 한편 성도평원에는 개착된 10여 개 인공수로들의 일부가 동쪽의 부강 유역까지 이어졌었는데, 이 사실은 간과되어 왔다. 결국 이 시설은 민강을 수원으로 이 지역의 수전농업 발전을 주도함으로써 '천부지국'을 이주는 계기가 되었다.

  • PDF

입지 및 설치방식에 따른 태양광 발전량 분석 방법에 관한 연구 (An analysis methodology for the power generation of a solar power plant considering weather, location, and installation conditions)

  • 허병노;이재현
    • 한국산업정보학회논문지
    • /
    • 제28권6호
    • /
    • pp.91-98
    • /
    • 2023
  • 태양광 발전소의 발전량은 기상 조건, 지리적 조건, 태양광 패널 설치 조건과 높은 상관관계를 갖는다. 과거 연구들에서는 발전량에 영향을 미치는 요소를 찾아내었고, 그 중 일부는 태양광 패널이 최대 전력량을 생산할 수 있는 최적의 조건을 찾았었다. 하지만, 태양광발전소 설치 시 현실적 제약을 고려하면 최대 발전량 조건을 만족시키기는 매우 어렵다. 발전소 소유자가 태양광발전소 설치를 검토할 때 태양광 발전량을 예측하기 위해서는 발전량에 영향을 미치는 요인들의 민감도를 알아야 한다. 본 논문에서는 태양광발전소의 발전량과 날씨, 위치, 설치 조건 등 관련 요인들과의 관계를 분석하기 위한 다항회귀분석 방법을 제안한다. 분석자료는 대구, 경북에 설치·운영되는 태양광발전소 11개소로부터 수집하였다. 분석 결과 발전량은 패널 종류, 일사량, 음영 유무에 영향을 받으며 패널 설치 각도와 방향이 복합적인 영향을 주는 것으로 나타났다.

고려시대 이후 평지읍성의 평면, 성문, 치의 분수계획과 그 변화 (Change of Flat Land Fortress' Plan along with Modular Coordination of their Gates and Chis since Goryeo Era)

  • 권순강;이호열
    • 건축역사연구
    • /
    • 제26권1호
    • /
    • pp.31-44
    • /
    • 2017
  • Module coordination(分數), which is crucially relevant to plan shape of a fortress and the location of its gates and chis(雉, protruding posts), have not been thoroughly studied, despite its importance in fortress system. While plan shape of Goryeo fortress features orderly placement of gates and chis, under medium-sized J oseon fortress doesn't follow it strictly. As a result, fortresses with various plan shapes greatly outnumber those of Goryeo. Especially, Gimhaeeupseong Fortress, which is a large-scale town wall, shows such a complicated plan shape, making it difficult to figure out its modular coordination. Presumably, the reason for J oseon fortress' complicated plan shapes, which doesn't follow the orderly modular coordination, is thought to be in its various geographical conditions. Also, it seems that the building of fortress with such various and complicated plan shapes was to deter enemies from intruding by confusing them. And various plan shapes of fortress are also figured out to be pertinent to street system of towns and positions of public offices.

음식문화거리조성 성공 요인에 관한 연구 (A Study on the Successful Factors in Building Food Culture Streets)

  • 엄영호
    • 한국조리학회지
    • /
    • 제12권1호
    • /
    • pp.157-172
    • /
    • 2006
  • Food Culture is formed in a unique culture heritage in some areas harmonized with social factors mixed with geographical conditions, natural environment, culture and religion. The more the life skill develops highly, the more people focus on improvement of the life skill in order to realize a delightful and convenient life, and plan an increase of production. Recently food-service companies have changed very quickly with economic environment. Such change will be continued and its speed will be more faster than now. Many food-service companies will disappear for weak competition, if they don’t manage adequately in such a case. Therefore, food-service companies have to search for an efficient, unique and creative management strategy. In such a viewpoint, Kyunggi-do designated five local cities as a model of Food Culture Streets greeting Welcoming Year of Kyunggi-do in 2005. The purpose of this study is to serve the healthy food to visitors visiting the Food Culture Streets and to do public relations about the excellence of their traditional food. In addition, this study includes improving tastes and qualities of food through education about cooking skills, management strategies and the best service with unique and creative menu development. Accordingly, we need to analyze the factors continuously on the business of food culture streets, and intend to use them as a database for high quality education and activity of food service industry in the future.

  • PDF

갈대군락의 현존량과 환경요인에 관한 연구 (A Study on Standing Crops in Phragmitis communis Communities and their Environmental Factors)

  • 김철수
    • Journal of Plant Biology
    • /
    • 제18권3호
    • /
    • pp.129-134
    • /
    • 1975
  • It was studied of relation between biomass of reed communities (Phragmitis communis) and several environmental factors concerned with such as chlor ine, pH, humus content in soil and depth of seawater submerged. Two sites where were the different geographical conditions were set up. One site had two plots: H plot, at theshallows of seawater, was not submerged except at full tide or at heavy rainfall, and M plot, at medium depth of seawater, submerged at every common tide at inside of a bank along the west seashore of Mu-An-peninsula. The other site also two plots: M' plot, at medium depth, submerged about 10 hours at each tide, and L plot, at deep seawater submerged every tims at tide at the outside of a bank along the eastside estuary of Youngsan river. Maximum standing crop of the reed community was shown on 25th of June: biomass at H M, M' and L plot were respectively 4.65, 3.60, 0.98, and 0.67 kg dry weight per $m^2$. Density of individual at H, M, M' and L plot was 67, 78, 244 and 333 plants per $m^2$. Net production of the terrestrial parts of rred community on the outside of the bank were lesser as much as a sixth than that on inside, but the density of the plant on outside of the bank was higher as much 4 or 5 times than that on inside. It was assumed that the growth of reed plant was inhibited by high chlorine, high pH, less humus in soil and submergence of seawater for long period.

  • PDF

韓半島의 대나무類 分布와 그 環境要因에 관한 植物地理學的 硏究 (A Phytogeographical Study on the Distribution of Bamboos in the Korean Peninsula)

  • Kong, Woo Seok
    • The Korean Journal of Ecology
    • /
    • 제8권2호
    • /
    • pp.89-98
    • /
    • 1985
  • Correlations between horizontal distributions of bamboos (Bambusaceae) in the Korean peninsula and environmental factors were studied using taxanomic and geographical literatures, both old and current. The vertical distributions of bamboos on Mt. Chiri were also studied, and environmental factors limiting horizontal and vertical distributions were compared. There are 18 species of bamboos (belonging to 5 genera) distributed in the Korean peninsula. The distributional range of each genus were distinct, although overlapped. Northern limit of bamboos of any species was marked by the line connecting Paikryung Island (124。40'E, 38。00'N), Mt. Changsoo, Mt. Myungji, Mt. Myohyung and Myungchum (129。40'E, 41。10'N). The optimum range of bamboos was concluded to be restricted to several southern province, with annual precipitation over 1,200 mm. The limiting factors on the distribution were inferred to be low temperature and duration of it. Mean daily minimum temperature of January and the number of days with daily mean temperatures below zero during January showed close associations with the distributional range, and an environmental factors favouring the distributrion of bamboos appeared to be vicinity of warm sea current, deep and extended snow acculation and southern exposure. The vertical distribution of bamboos on Mt. Chiri was limited by low temperature, unfavorable topographic and edaphic conditions caused by steep slope. Difference in the vertical limits between SE and NW slopes are caused by the differences in temperature and precipitation between the slopes. Bamboos were more abundant in valleys than on the ridge, apparently because the deeper snow in the valleys protected the plants from low temperature, heavy winter winds and desiccation.

  • PDF

Variability of Azadirachtin in Azadirachta indica (neem) and Batch Kinetics Studies of Cell Suspension Culture

  • Prakash Gunjan;Emmannuel C.J.S.K.;Srivastava Ashok K.
    • Biotechnology and Bioprocess Engineering:BBE
    • /
    • 제10권3호
    • /
    • pp.198-204
    • /
    • 2005
  • Seeds of neem were collected from different parts of India and analyzed for their azadirachtin content by High Performance Liquid Chromatography (HPLC). In order to assess the effects of genotypic and geographical variation on azadirachtin content in cell cultures, callus development was attempted in the seeds containing high and low concentration of azadirachtin. The concentration of azadirachtin in callus cultures was significantly affected by the explant source. Seed kernels with higher azadirachtin content produced higher azadirachtin content in callus cultures and lower azadirachtin content was seen in callus cultures produced from seed kernels with low azadirachtin content. The protocol for development of elite stock culture of Azadirachta indica was established with the objective of selecting a high azadirachtin-producing cell line. The highest azadirachtin-producing cell line was selected and the effects of different media and illumination conditions on growth and azadirachtin production were studied in shake flask suspension culture. Detailed batch growth kinetics was also established. These studies provided elite starter culture and associated protocols for cultivation of A. indica plant cell culture in the bioreactor.

하천 조성 기법에 따른 서호천 식생 및 식물상의 차이 비교 (The Differentiation on the Plant Flora and Vegetation Caused by the Different Technique of Stream Restoration at the Seo-Ho Stream)

  • 김송이;김혜주;이규석
    • 한국환경복원기술학회지
    • /
    • 제7권3호
    • /
    • pp.26-34
    • /
    • 2004
  • It is expected that the different techniques of stream restoration could be caused the different conditions of the stream ecosystem. The study was to investigate and compare plants and vegetation clusters of appearing plant species in the upper and lower section of the Seo-Ho stream, It was classified and listed all of the plants appeared in the upper and lower section of the stream, It was used the belt-transect method and Unweighted pair group method using arithmetic algorithm in order to examine and analyzed discover the vegetation clusters, In the result, 28 families and 114 species appeared in the upper section, In the other side, 26 families and 93 species appeared in the lower section of the steam. The naturalized index of the upper section was 21%, and that of the lower section was 27%. In addition, the upper section has more various geographical features than lower section of the stream. So that, consequently the study shows that the different techniques of stream restoration could be caused the different growth of the stream ecosystem.

몽골 전통의료의 현황 및 역사적 발달과정 (The Current Situation of Mongolian Traditional Medicine and It's Historical Development)

  • 유왕근
    • 대한예방한의학회지
    • /
    • 제18권2호
    • /
    • pp.125-132
    • /
    • 2014
  • Objective : The aim of this study is to review the historical development and current situation of Mongolian traditional medicine. Method : Systematic literature review for books, journals, governments statistics, reports on mongolian traditional medicine was carried out. Results : The theory of Mongolian traditional medicine is influenced by the philosophy and medical theories of the ancient orient such as India, Tibet and China-theories of hot and cold, principle of yin and yang and five elements. There are very unique treatments like brain tram concussion, fermented horse milk treatment as well as moxibustion, acupuncture, and blood letting. It appears that they are very closed to nomadic life. Training program of each institutes need to be standardized. Mongolian traditional medicine had been almost destroyed by the influence of communist idea from 1930s until the end of the 1980s. Since 1990, Mongolian government put much emphasis on the development of traditional medicine. And now about 3.7% of total beds is traditional medicine one and that there are six TM schools and the total number of traditional medicine in 2012 is 1696. However, there are still the lack of manpower, facilities, standardized training program and scientific research for traditional medicine. Conclusion : Mongolian traditional medicine has been developed over centuries in response to Mongolia's unique geographical and climate conditions and the lifestyles of its people and that made contribution to the health of mongolian people. However, it needs to be strengthened because there are poor infrastructure and training program.