• 제목/요약/키워드: He generation

검색결과 290건 처리시간 0.027초

방사선 감수성에 관한 연구 (6) 해충의 방사선감수성 (Studies of radiosensitivity (6) Radiosensitivity of insect pests)

  • 배대한
    • 한국응용곤충학회지
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    • 제4권
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    • pp.67-74
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    • 1965
  • The work on the 'Studies of radiosensitivity' in Korea has been initiated since 1959 by the author at various institutions in home and foreign countries, and more than 20000 of plant materials in 73 varieties and 41 kinds are treated under varied conditions for the studies of radiosensitivity in plants. However, a study of the susceptibility to radiation in insect pests as well as their biological effects has not been previously reported in this country. During the year of 1964 and 1965, near 50000 of insects at the stages of adult, egg, larva and pupa in 14 different kinds are irradiated under acute X and gamma rays to investigate the behavior of growth and lethality after irradiation, and thrir general tolerances to radiations are compared by the kind of insects, stage of growth, radiation sources and exposured dosages. Through the experiments, it is shown that the lethality in most of insects are high as several kilo roentgens above and no significant effects on pupation. emergence, and oviposition in the treated generation at the dose of 3 Kr. below, but in the following generation , the rice stem borer for instance, no oviposition or decreased laying is observed from the dosages at 3 Kr. to 1 Kr., and the hatching was possible from 1.5 Kr. below of irradiated larvae although laying and hatching are seemed in normal. In general, the lethal dose $50\%$ of tested infect materials at the larval stage can he classified some what 60-80 Kr. for Pine caterpillar, Fall webworm, Camphor silk moth and their relatives, at 40-60 Kr. for Gypsy moth, Monley prominent and some relatives and at 20-30 Kr. for House fly, Rice weevil, Pine sawfly etc. Plant parasitic nematodes such as Hirschmannia and Paratylenchus shown very high resistance to radiation and the LD-50 is observed from 100 Kr. or above. A concept to evaluate the radiosensitivity in insects by taxological family line as a practical measure is not answerable yet, but it ran he solved within the near future through the continuing experiments.

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효율적인 색인어 추출을 위한 합성명사 생성 방안에 대한 연구 (Study on the Generation Methods of Composition Noun for Efficient Index Term Extraction)

  • 김미진;박미성;최재혁;이상조
    • 한국정보처리학회논문지
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    • 제7권4호
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    • pp.1122-1131
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    • 2000
  • The efficiency of thesytem depends upon an accurate extraction capability of index terms in the system of information search or in that of automatic index. Therefore, extraction of accurate index terms is of utmost importance. This report presents the generation methods of composition noun for efficient index term extraction by using words of high frequency appearance, so that the right documents can be found during information search. For the sake of presentation of this method, index terms of composition noun shall be extracted by applying the rule of composition and disintegration to the nouns with high frequency of appearance in the documents, such as those with upper 30%∼40% of frequency ratio. In addition, for he purpose of effecting an inspection of validity in relation to a composition of high frequency nouns such as those with upper 30∼40% of frequency ratio as presented in this report, it proposes an adequate frquency ratio during noun composition. Based upon the proposed application, in this short documents with less than 300 syllables, low frequency omissions were noticed, when composed with nouns in the upper 30% of frequency ratio; whereas the documents with more than 30 syllables, when composed with nouns in he upper 40% of frequency ration, had a considerable reduction of low frequency omissions. Thus, total number of index terms has decreased to 57.7% of these existing and an accurate extraction of index terms with an 85.6% adequacy ratio became possible.

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남자 대학생의 대인관계 스트레스 경험 (A Study of Male Student Stress Caused by Interpersonal Relations)

  • 최미혜;김경희;정혜경;염순교;권혜진;정연강
    • 한국학교보건학회지
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    • 제11권1호
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    • pp.63-74
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    • 1998
  • The purposes of this study are to show in interpersonal relations what factors male students are stressed from, how they experience stress, how they cope With it in each situation, and what this results in It attempt to gam basic materials to promote male student health and positive coping methods, The subject of this study was 15 male students of C University located in Seoul and Kyeonggui-Do They were composed of 5 sophomores, 5 Juniors and 5 seniors The period for collecting materials was October 1997 to January 1998, and the interview time ranged from 50 minutes to two hours The interview frequency was one to three times as occasion demanded, The materials were analyzed by the methods and theory suggested by Strauss & Corbin (1990) The results were 130 categories grouped into 33 divisions by similarity Finally, they were united into 9 higher categories In interpersonal relations the core category of male student stress is "affliction", and it follows the course of generation-coping-resolution The types showed in the course of material analysis are as follows, (1) When the subject student is on good terms with the other and the stress is repeated- "affliction" is strong and continuous-and his ability sense is strong, he copes with "affliction" With his own will and solves It affirmatively, (2) When the subject student is on good terms with the other and the stress is repeated-so "affliction" is strong and continuous-and his ability sense is weak, he copes with "affliction" with an emotional bias and solves it negatively (3) When the subject student is on good terms with the other and the stress is temporary-"affliction" is strong and temporary-and his ability sense is strong, he copes with "affliction" with his own will and solves it affirmatively (4) When the subject student becomes estranged from the other and the stress is temporary-"affliction" is weak and temporary-and his ability sense is weak, he copes with "affliction" with an emotional bias and solves it negatively, (5) When the subject student becomes estranged from the other and the stress is repeated-"affliction" is strong-and continuous and his ability sense is strong, he copes with "affliction" with his own will and solves it affirmatively (6) When the subject student becomes estranged from the other and the stress is repeated-"affliction" is strong and continuous-and his ability sense is weak, he copes with "affliction" with an emotional bias and solves it negatively. According to the above results, the conditions of cause and effect for male students to generate "affliction" should be understood in order to help cope with stress caused by interpersonal relations A program for education and counseling should be developed for male students to strengthen their 'ability sense' in choosing coping strategies In addition, the individual estimation for ability sense should be performed when education and counseling them.

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Hugo $H\"{a}ring$의 '신건축(Neues Bauen)' 사상과 그 이론 발전의 상징론적 측면에 대한 고찰 (A study on Hugo $H\"{a}ring's$ Theory of 'Neues Bauen' and its Symbolic Meaning)

  • 김경진;임석재
    • 건축역사연구
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    • 제12권2호
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    • pp.41-59
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    • 2003
  • Hugo $H\"{a}ring$(1882-1952) belonged to that special generation of architects born in the 1880s which became responsible for the establishment of Modern Movement in the 1920s as W. Gropius, Mies van der Rohe and Le Corbusier, etc. Although he have been overlooked by many historian, He was a key figure of the Modern architecture and as the main theorist for Organic stream in German architecture. He is well-known for his theory of 'Neues Bauen(New Building)', the organic functionalism that is epitomized as the design process from the inside outwards, starting with the life-processes of dwelling. So he argued that the builder must become aware of the life process his building is to serve, and he should not impose a form but try to find the form. These concepts are expressed well in his key-words, the 'Organwerk(organ-work)' and 'Leistungsform(form as achievement)'s. $H\"{a}ring's$ theory can be found in the short early essay, 'Wege zur Form(approaches to form)' of 1925. But His concept of 'function' is based on the speciality and individual identity that concerned him from the start, not purely pragmatic aspects. After 1940s his theory moved increasingly in this direction. He defined this as the transition from 'Organwerk' to 'Gesetaltwerk', from mere anatomy to essence, being, personality, life. It suggest that Hugo Haring's idea of Gestalt is a dimension of mystical or symbolic meaning. This paper Is about the way in which this theoretical transition can be parallel with contemporary philosophers as E. Cassirer's philosophy of symbolic forms and M. Heldegger's phenomenology. And the key example of this viewpoint is (1921-1926) near Lubuk in Germany, with its 'cowshed' of pear shaped plan devised around the requirements and rituals of farm. This study presents the symbolic conception of Hugo $H\"{a}ring's$ theory can propose the ability of a symbolic intuition as a view that re-integrate technical thinking with knowledge of other kinds beyond the immediate material.

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연재 송병선의 놀이방식과 의의 - 그의 유기를 바탕으로 - (The Play Method and Significance of Song Byung-seon(宋秉璿) - Based on His Travel Essay(遊記) -)

  • 유영봉
    • 한국엔터테인먼트산업학회논문지
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    • 제15권8호
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    • pp.315-325
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    • 2021
  • 연재(淵齋) 송병선(宋秉璿, 1836-1905)은 우암(尤庵) 송시열(宋時烈)의 9세손이다. 생전에 유림(儒林)의 신임을 얻었고 여러 차례 조정에서 불렀으나 공직을 거부하고 재야에서 정진하고 후학 교육에 평생을 바쳤다. 을사조약(乙巳條約)이 체결되자 연재는 고종에게 을사조약의 폐지를 간청하였고 그의 뜻이 이루어지지 못하자 선비의 양심으로 회덕(懷德)에 있는 고택에서 스스로 목숨을 끊었다. 연재는 사림(士林)의 지도자로서의 의무를 다하면서 국권 회복에 대한 메시지를 왕과 백성, 유림에게 남기고 왕에게 최후의 호소를 보낸 것이다. 이후 1962년 연재는 건국훈장을 받았다. 송병선의 여행은 일생에 걸쳐 이루어졌다. 22개의 길고 짧은 여행기가 남아있다. 소풍은 주로 육지로 이루어졌기 때문에 대부분이 말이나 노새를 탔고 때때로 수레나 가마를 사용했다 또한 그는 때때로 수로를 효과적으로 사용하는 방법을 알고 있었다. 일부 여행기에는 내륙 수로와 해로를 이용한 기록이 있으며 조상 유물을 찾아가는 여정의 기록도 있다. 이 과정에서 가문의 계승이라는 사명을 재확인하고 선조들의 찬란한 위업의 일부가 되겠다는 의지도 확인된다. 또한 견학에는 경전 낭독과 성리학 토론이 추가되었으며 그의 여행은 성리학의 세계관을 널리 알리고 확장하는 수단으로 활용되었다. 그리하여 연재는 선조들이 남긴 존왕양이(尊王攘夷)의 정신을 이어받아 마침내 위정척사(衛正斥邪)의 기치를 높이 올렸다. 그리고 그는 과감하게 나라를 위해 죽음의 길을 떠났다.

GTAW에 의한 Al 합금 용접부의 조직 및 결합에 대한 연구 (Structures and Defects in Welds of High Strengths Al Alloys by Using GTAW)

  • 하려선;정병호;박화순
    • Journal of Welding and Joining
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    • 제21권5호
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    • pp.540-546
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    • 2003
  • Recently Al alloys are being used gradually for structural materials of transports. In welding of Al alloys used for transports, good weldabilities as well as adequate mechanical properties of the welds should be ensured as structural materials. In this study, the welds formation, macro and microstructural characteristics, generation of defects and hardness distribution in welds of Al alloys of 5083, 6N01 and 7N01 by DCSP- and AC-GTA welding process, were investigated. The deeper penetration was obtained in all welds of the alloys by DCSP-GTAW with He gas, compared with those by using AC-GTAW. The 6N01 alloy showed high susceptibilities to solidification cracking in weld metal and liquation cracking in HAZ of the welding beads of both DCSP- and AC-GTAW process. The cracking ratio of 6N01 alloy was increased with increasing of welding current. The porosity ratios in weld metal of all alloys used were extremely low including all welding conditions of DCSP-GTAW. However, in AC-GTAW process, the porosity ratios of the welds using Ar gas showed much higher values than those using He gas.

중소기업에서의 하이퍼웨이브를 이용한 정보관리시스템 도입에 관한 연구 (A Study on Introducing Hyperwave System in Small and Medium Enterprises)

  • 노영희
    • 정보관리연구
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    • 제27권2호
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    • pp.65-94
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    • 1996
  • 본고에서는 기술정보를 관리할 필요성을 느끼면서도 재정적인 이유와 조직구조상의 문제로 정보관리실이나 정보관리담당자를 둘 수 없는 중소기업이 낮은 비용으로 기술정보를 효과적으로 관리함으로써 업무의 중복을 피할 수 있고 기술혁신을 가져올 수 있는 방안을 제시하고 있다. 이러한 방안은 차세대 웹 브라우저로 등장하고 있는 하이퍼웨이브를 기술정보관리시스템으로 활용하는 것으로서 다음과 같은 장점을 가지고 있다. 첫째, 하이퍼웨이브는 어느 누구나 기술정보를 용이하게 관리할 수 있다. 둘째, 하이퍼웨이브를 이용하여 기술정보를 관리할 경우 정보자료의 입력, 수정, 삭제를 용이하게 할 수 있다. 셋째, 하이퍼웨이브 시스템은 관련된 문헌 혹은 이미지들을 연결시키기 위해 링크를 간단하게 생성할 수 있다. 넷째, 다양한 검색기법을 제공한다. 다섯째, 하이퍼웨이브는 가격이 저렴하고 기업의 특성을 살려서 기술정보를 조직할 수 있다.

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Bernard Tschumi의 초기 작품을 중심으로 본 움직임 연구 (A Study on the Movement focused on Bernard Tschumi's Early Works)

  • 서정연
    • 한국실내디자인학회논문집
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    • 제18권1호
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    • pp.27-34
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    • 2009
  • Architect Bernard Tschumi had explored a new architectural conception through his own notional devices such as space, event and movement during 1970s. But, among these notions, the concept of movement was ambiguous and difficult to adopt it for architectural design strategy. Because the movements in everyday's behaviour or in dancing art are significantly different from architectural thought. However he had succeeded in coining the creative notion of movement as almost real body's and of living flesh. He invented an acute methodology and bold interpretation for his early experimental works. So, this paper tried to understand and analyse his concept of movement focused on his early works. The results of this paper's discussion are as follows; First, Tschumi's movement concept Is dynamic one operated by desire and can violate space in physical level as well as metaphysical level. Next, the movement performs the role of generator which deforms space or even generate it. Third, his movement can be readable only when you go down and bring it in practice. Also it Is unblocked potentiality, undetermined sequential material and unfinished practice. Fourth, when Tschumi's movement could be thought as walking, this walking movement makes up a story through rhetorical speech acts that are presented by turns and detours.

Study on Imaging with Scanning Airborne W-band Millimeter Wave Radiometer

  • Kong, De-Cai;Kim, Yong-Hoon;Li, Jing;Zhang, Sheng-Wei;Sun, Mao-Hua;Liu, He-Guang;Jiang, Jing-Shan
    • 대한원격탐사학회:학술대회논문집
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    • 대한원격탐사학회 2002년도 Proceedings of International Symposium on Remote Sensing
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    • pp.593-597
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    • 2002
  • The paper introduces a research on the W-band Millimeter Wave Radiometer(RADW92) through an airborne experiment. Microwave remote sensing images of part of the Yellow River and the WeiHe River are of fared. Analysis of factors influencing the image qualities as well as the resolutions to them are also included. The RADW92 is the first generation of Millimeter Wave Radiometer in China, which works with operating frequency 92 GHz, the bandwidth 2 GHz, the integration time 60ms, the system sensitivity 0.6k and the linearity better than 0.999. Cassegrain Antenna is designed for imaging by conically scanning. The result of the experiment suggested that RADW92 had been adequate for space use.

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웹서비스를 위한 WSDL 리포지토리 설계 (Web Service Method using WSDL Repository)

  • 최유순;박종구
    • 한국정보통신학회논문지
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    • 제11권4호
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    • pp.745-753
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    • 2007
  • 웹 서비스는 분산 컴퓨팅의 차세대 주자로 인터넷 상에서 표준 기술을 통해서 이용될 수 있는 모든 비즈니스 처리를 의미하는 분산 솔루션이다. 웹 서비스는 웹 인터페이스를 통해서 기능을 수행한다. 본 논문에서는 이러한 웹 서비스 절차를 단축시켰다. WSDL을 저장하기 위한 데이터 베이스로 WSDL Repository를 이용하였다. 서비스 제공자가 서비스를 등록할 때 서비스에 대한 정보를 UDDI Registry에 저장하게 하고, 이 때 WSDL을 같이 전송하도록 구현했다. WSDL Repository는 WSDL 뿐만 아니라 웹 서비스에 대한 서비스 정보를 갖고 있는 UDDI도 저장한다. UDDI Registry에 저장된 서비스에 대한 정보와 WSDL의 연결은 UDDI에서 데이터 필드로 구성했다.