• 제목/요약/키워드: Threatened

검색결과 532건 처리시간 0.03초

연화산(강원도 태백시)의 관속식물상 (Floristic Study of Vascular Plants in Yeonhwasan Mt. (Taebaek-si, Gangwon-do, Korea))

  • 정현진;장주은;김알렉세이;이세령;김영수;김지은;이정심;이강협;강은수;한상국;길희영
    • 한국자원식물학회지
    • /
    • 제36권4호
    • /
    • pp.314-340
    • /
    • 2023
  • 본 연구는 강원도 태백시에 위치한 연화산의 관속식물상을 조사하였다. 2022년 4월부터 9월까지 총 14회에 걸쳐 현지조사를 수행한 결과 87과 282속 441종 15아종 41변종 8품종으로 총 505분류군이 확인되었다. 이 중 특산식물은 22분류군이었다. 국립수목원이 지정한 적색목록에 따른 위협범주 및 준위협에 속하는 식물은 4분류군으로, 위급, 위기, 취약, 준위협 범주에서 각각 1분류군이 확인되었다. 식물구계학적 특정식물은 총 102분류군이 확인되었으며, V등급에는 1분류군, IV등급9분류군, III등급 34분류군이 속했다. 침입외래식물은 34분류군, 생태계교란식물은 3분류군이 확인되었다. 조사지의 도시화지수는 12.8%, 귀화율은 6.7%로 나타났다. 본 연구 결과는 연화산의 생태적 가치 보전과 관리방안 수립을 위한 기초자료로 활용될 수 있을 것이다.

The Design for 32' CRP

  • Kim, Don-Yun;Bae, Joon-Soo;Lee, Kue-Hong;Kim, Hoo-Deuk;Byon, Chang-Ryon
    • 한국정보디스플레이학회:학술대회논문집
    • /
    • 한국정보디스플레이학회 2004년도 Asia Display / IMID 04
    • /
    • pp.731-734
    • /
    • 2004
  • Nowadays, CRTs are threatened by the flat panel displays(FPD). The depth of CRTs becomes one of the most important design factor to maintain the dominated portion in the display market. The slim CRT design is introduced in this paper.

  • PDF

Cave communities and the future

  • Chapman, Phil
    • 동굴
    • /
    • 제4호
    • /
    • pp.51-58
    • /
    • 1996
  • Caves abd the life they contain face constant pressure from a worldw demand for cement. hydro-electric power and land for building a agriculture. The 8th International Congress of Speleology held in Kentu two years ago passed a resolution on behalf of the IUCN "Cave Speci Group" which called for "...biological surveys of threatened caves. mos in the tropics, and ecological studies to solve specific managem provlems on the causes of endangerment and how these can be remov or mitigated". This final article in the "Cave Life" series explains the n for an ecological approach to cavelife conservation.

  • PDF

A Continuous Evaluation Processes for Information Security Management

  • Choi, Myeonggil
    • Journal of Information Technology Applications and Management
    • /
    • 제23권3호
    • /
    • pp.61-69
    • /
    • 2016
  • Growing information threats have threatened organization to lose information security controls in these days. Many organizations have accepted the various information security management systems does mention necessity of a continuous evaluation process for the executions of information security management in a theoretical aspect. This study suggests a continuous evaluation process for information security management reflecting the real execution of managers and employees in organizations.

철도화물 활성화를 위한 고객 Needs 파악 및 전략 수립 (Customer Needs Survey and Implementation Framework for Rail Freight Transport)

  • 노학래;이용상;최나나
    • 한국철도학회:학술대회논문집
    • /
    • 한국철도학회 2000년도 추계학술대회 논문집
    • /
    • pp.60-67
    • /
    • 2000
  • The success of road haulage, in dominating the surface movement of freight, is now threatened by increased traffic congestion, falling average motorway speeds and rising in logistic costs. As a result, Government as well as companies, which use or operate logistics service, is now looking to rail to provide an alternative. First, we surveyed the bottlenecks and desired betterments to rail transport, which were indicated by rail and road transport users. Through the analysis of customers' needs survey. this paper is focused in the basic framework fur the rail freight transport, which could be helped to promote the efficiency associated with moving freight by rail.

  • PDF

An analysis of GPS anti-jamming methods in spatial and temporal domain

  • Cho, Hun-Soo;Im, Sung-Hyuck;Jee, Gyu-In
    • 한국항해항만학회:학술대회논문집
    • /
    • 한국항해항만학회 2006년도 International Symposium on GPS/GNSS Vol.2
    • /
    • pp.341-345
    • /
    • 2006
  • The GPS is widely used in various parts, therefore it is required higher integrity and continuity. These integrity and continuity are threatened by outer jamming signals which are intended or not. And various anti-jamming ways have been studied to remove these jamming signals. In this paper, we are going to test the efficiency of the anti-jamming algorithm in space and time-space domain, and analyze

  • PDF

긴급제언: 유기성폐기물 자원(바이오가스 생산) 활성화 방안 (Activation method for biogas production from organic waste)

  • 곽채식
    • 기술사
    • /
    • 제43권5호
    • /
    • pp.35-40
    • /
    • 2010
  • The world economy is threatened by rising oil prices due to the depletion of resources, and climatic changes are intensified due to rapid increase of greenhouse gases emission. Global warming is recognized as a worldwide problem not only as national level one, collaborative efforts are in progress actively. The fact is that the development of new & renewable energy which can replace fossil fuel and preserve the environment is the key of the attention in accordance with "low carbon, green growth" policy of our government. Biogas is an energy source. And the best part of using biogas is that wastes are treated in its production process.

  • PDF

Service Quality Measurement in Foodservice Industries

  • Seo Sun-Hee
    • Journal of Community Nutrition
    • /
    • 제8권1호
    • /
    • pp.44-57
    • /
    • 2006
  • This study intended to enhance understanding of concept and measurement of service quality and analyzed studies investigating dimension and attributes of service quality in both Korea and international foodservice industries. This study summarized many methodological issues related to service quality measurement, especially SERVQUAL. SERVQUAL has been criticized because performance-expectation difference operationalization threatened reliability and discriminant validity including shared method variance. Researcher suggests that future studies should understand clearly the concept of service quality and methodological issues of SERVQUAL prior to adapting SERVQUAL itself.

An Examination of the Effect of Self-esteem on Aggression Among High School Students

  • Cha, Eun-Jin
    • 한국컴퓨터정보학회논문지
    • /
    • 제25권10호
    • /
    • pp.179-184
    • /
    • 2020
  • '낮은 자아존중감 가설'에 의하면 청소년의 낮은 자아존중감이 높은 공격성의 원인으로 간주되는 반면, '위협받는 자부심 이론'은 높은 자아존중감이 공격성을 불러일으키는 것으로 해석된다. 본 연구의 목적은 고등학생의 자아존중감이 공격성에 미치는 영향을 검증함으로써 자아존중감의 증진과 공격성의 감소에 기여할 수 있는 함의를 도출하는 것이다. 이를 위해 이론적 고찰에 근거하여 연구모형을 구축하였으며, 한국아동청소년패널조사 자료를 대상으로 구조방정식 모형을 적용하여 검증하였다. 연구결과, 고등학생의 자아존중감이 높을수록 공격성이 더 낮은 것으로 나타났으며, 따라서 낮은 자아존중감 가설이 타당한 것으로 평가되었다. 이와 같은 연구결과를 바탕으로 고등학생의 자아존중감을 높이고 공격성을 낮출 수 있는 실천적 개입 방안을 논의하였다.

A Study on Furniture Design for Disassembly

  • Han, Jung-Yeob
    • 한국가구학회지
    • /
    • 제18권2호
    • /
    • pp.91-99
    • /
    • 2007
  • Modernity which is superficial phenomenon set off the mass scale for mass consumption and provide uniformly artificial environment. But natural destruction, environment pollution, resources exhaustion and so on has been caused by this and now ecology is threatened by destruction and damage beyond the limitation and human beings survival is even threatened. Accordingly furniture development for environment preservation considered environment problem is the urgent real situation. Recent paradigm is the concept of Eco-design which is the green design possible to live together in symbiosis, and new types of alternative furniture are needed in Korea as well. 'Furniture for disassembly' is presented as new method for alternative furniture. Furniture for disassembly can be presented by mainly two directions. The first main characteristic is what is assembled by the use of woodworking joints technique as an assembly structure system without any hardware. The second is what is presented as the structure possible to be assembled by simple manual tools with hardware without any glue. The advantages of furniture for disassembly are environment preservation, space application, transportation efficiency and shapeliness. In manufacture method which is different from present furniture, the application of traditional truss technique which uses various types of custom-made and connection technique in case of assemble structure system without hardware is the typical differences. This assembly method expects not only interest induction about assembly and disassembly of diagram per sub materials but also the development of emotion, the improvement of collaboration, space perception ability and shape sense, the improvement of solid body structure insight and so on, when it use in the furniture for children with the application to many kinds of structure with BANGDOOSANJ (Wedged), JUMUGJANGBU (Dovetail) or NABIEUNJANG (Dovetail Keys) and so on.

  • PDF