• 제목/요약/키워드: Qualified

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디지털 원자로 보호 시스템을 위한 정형 소프트웨어 요구사항 명세 (Formal Software Requirements Specification for Digital Reactor Protection Systems)

  • 유준범;차성덕;김창회;오윤주
    • 한국정보과학회논문지:소프트웨어및응용
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    • 제31권6호
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    • pp.750-759
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    • 2004
  • 원자력 발전소의 디지털 제어 시스템에 적용되는 소프트웨어는 안전성이 중요시되는 safety-critical 소프트웨어로, 충분한 수준의 안전성을 보장하기 위해서 여러 기법들이 적용되고 있다. 특히, 정형명세 기법은 개발의 초기 단계에서 소프트웨어 요구 사항들을 명확하고 완전하게 명세 하도록 유도함으로써 안전성을 크게 향상시킬 수 있는 기법으로 인정받고 있다. 본 논문에서는 원자력 발전소 디지털 제어 시스템 소프트웨어의 요구 사항 명세에 적합하도록 개발된 정형명세 기법인 NuSCR을 논의한다. 또한, 개발된 NuSCR의 적용성을 검토하기 위해, 현재 KNICS 사업단에서 개발중인 발전소보호계통 소프트웨어의 요구사항을 정형 명세 한 경험을 소개하고 있다. 또한, 원자력 도매인에 특화된 정형명세 기법인 NuSCR의 우수성도 실례를 들어 설명하고 있다.

한약(韓藥)의 기미(氣味)가 한열자극(寒熱刺戟)을 받은 생쥐의 혈중(血中) corticosterone에 미치는 효과(效果) (Effects of Taste and Quality of Drugs on the Plasma Corticosterone Level in Mice exposed to Heat and Cold Stress)

  • 남여정;이태희
    • 대한한의학방제학회지
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    • 제10권1호
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    • pp.157-167
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    • 2002
  • This study was performed to investigate what effect the taste and quality of drugs would have on the cold and heat mechanisms of human body. We administered Hwangryeunhaedok-tang composed of bitter-tasted, cold-qualified drugs and Gungangbuza-tang composed of spice-tasted. hot-qualified drugs, respectively to the mice 1 hr before exposure to heat stress or cold stress. Plasma corticosterone level of mice was measured. The results were as follows: 1. The elevated corticosterone level in the mice exposed to heat stress was significantly decreased after administration of Gungangbuza-tang but there was no decrease after administration of Hwangryeunhaedok-tang. 2. The elevated corticosterone level in the mice exposed to cold stress was significantly decreased after administration of Hwangryeunhaedok-tang but there was mild decrease after administration of Gungangbuza-tang. 3. When the doses, 3g/kg and 1g/kg were administerd to mice exposed to heat stress. both dose showed significant decrease of corticosterone level and the dose. 3g/kg was more effective. However, in the mice exposed to cold stress, the dose, 3g/kg showed mild decrease and 1g/kg showed significant decrease. These data suggested that HW decreased the plasma corticosterone level in the mice exposed to cold stress and GB also decreased the plasma corticosterone level in the mice exposed to heat stress. In conclusion, our study revealed that the taste and quality of drugs controled the cold and heat mechanism of human body.

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CAD 프로그램을 활용한 기하학 문양의 직물 디자인 종광설계 (Weave Draft Designs Influenced by Geometric Patterns using a CAD Program)

  • 김수미
    • 한국의류산업학회지
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    • 제16권1호
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    • pp.43-54
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    • 2014
  • In textile industry, needs for various weave drafts have been increased to produce high qualified textile goods. One of disadvantages of traditional textile industry was spending time and money on manual sampling. Nowadays, however, weave draft design and sampling using CAD programs reduce these consumption efficiently. Therefore, this study aimed to provide high qualified woven fabrics by weave draft designs influenced by geometric patterns. First, We analyzed geometric patterns, except for dot, stripe, and checks, in fashion collections from 2009 to 2014 S/S. Then, based on these analyses, design concepts were decided. Third, weave drafts influenced by geometric patterns were designed with weave CAD program, TEX PRO 10.0 by Youngwoo CNI inc. Forth, We simulated fabrics woven by new drafts using CAD programs, depending on fibers, yarns, density of woven, colors, and finishes. Unclassified geometric patterns would be expressed by small size patterns that influenced by retro moods, square patterns with various color variation, zigzag lines, and pieces of puzzles. Three design concepts were decided as greenness, neoclassic, and romantic chic. Thus, geometric patterns for printing were created as drafts for general looms, and one repeat of each draft were provided. According to the design concepts, we designed 13 fabrics with 4 geometric patterns weaving drafts. All Drafts were designed with CAD programs. Finally, same drafts were simulated as woven fabrics for both S/S and F/W seasons by changing each element, such as fiber, yarns, density, colors, and finishes.

이종금속 용접부 축방향 결함 검출을 위한 초음파 탐촉자 설계 (Ultrasonic Transducer Design for the Axial Flaw Detection of Dissimilar Metal Weld)

  • 윤병식;김용식;양승한
    • 비파괴검사학회지
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    • 제31권5호
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    • pp.536-542
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    • 2011
  • 원자력발전소의 이종금속 용접부는 PWSCC 결함에 민감한 것으로 알려져 있으며 기량검증된 검사자가 기량검증된 절차서를 사용하여 가동중검사 기간 중에 주기적인 검사를 수행하고 있다. 국내 원자력발전소 이종금속 용접부의 형상 조사 결과에 따르면 대부분의 이종금속 용접부가 경사진 노즐부나 인접부에 위치하는 것으로 나타났다. 일반적인 초음파 탐촉자를 사용하여 경사부위에 위치한 이종금속 용접부의 검사를 수행할 경우 초음파 탐촉자의 접근성이 제한되어 검사체적을 모두 검사하기가 어렵다. 특히 축방향 결함 검출을 위한 원주방향 주사에서는 초음파 탐촉자가 경사면에 위치하게 되면 반사체로부터 결함 신호를 얻기 가 어려우며 이에 따라 결함 검출이 어렵게 된다. 이러한 문제점을 극복하기 위해서는 경사면을 고려하여 비틀림 각도를 적용한 초음파 탐촉자를 사용하는 것이 필요하다. 모델링을 통하여 비틀림 굴절 종파탐촉자 를 설계하고 축방향 결함 검사용 비틀림 굴절 종파탐촉자를 제작하여 실험을 통하여 결함으로부터 신호를 취득하였다. 일반 탐촉자와 비틀림 각도가 적용된 탐촉자의 초음파 응답신호를 비교한 결과 비틀림 각도가 적용된 탐촉자의 초음파 응답신호가 훨씬 뛰어난 것으로 나타났다.

Problems of Shariah Governance Framework and Different Bodies: An Empirical Investigation of Islamic Banks in Bangladesh

  • ALAM, Md. Kausar;MUSTAFA, Hasri;UDDIN, Md. Salah;ISLAM, Md. Jahirul;MOHUA, Marjea Jannat;HASSAN, Md. Farjin
    • The Journal of Asian Finance, Economics and Business
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    • 제7권3호
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    • pp.265-276
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    • 2020
  • The study aims to explore the problems of the existing Shariah Governance Framework (SGF) and its concerned authorities in the context of Bangladesh. Thus, according to responses from 17 respondents, this study outlines that Bangladesh has an absence of a shortage of experts, experienced, knowledgeable, and qualified Shariah people at all levels (i.e., the central bank, Islamic banks, Shariah Supervisory Boards (SSBs), and regulators). Therefore, Bangladesh does not have a separate Islamic banking act, Shariah audit firm, Shariah index institutions, and comprehensive SGF. The existing guideline has a limitation concerning its comprehensiveness, accountability, responsibility, and structure of SSBs. Islamic banks do not follow the instruction of the central bank in the formation of SSBs. As a result, there is an absence of competent and qualified SSB, which also results in the functions of Shariah departments as well as Shariah applications. Usually, the Board of Directors (BOD), management, executives, customers, and the public also have the conceptual gap about Islamic banks, SGF, and banking system compared to the regular prayers, faith, and belief. Concisely, Bangladesh requisites a comprehensive SGF, Islamic banking act, a standard accounting system, and a robust Shariah audit system for the overall development of Islamic banks and SGF.

한국형 기동헬기 엔진 (T700/701K) 인증 과정 (Qualification Process of T700/701K Engine for KUH)

  • 정용운;김재환;안이기
    • 한국추진공학회:학술대회논문집
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    • 한국추진공학회 2011년도 제37회 추계학술대회논문집
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    • pp.344-347
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    • 2011
  • 본 논문은 한국형 기동헬기(수리온)에 탑재되는 T700/701K 터보 샤프트 엔진의 인증과정에 대해서 기술한다. T700/701K 엔진은 군용 헬기엔진으로 널리 사용되고 있는 GE사의 T700-701C/D엔진을 후방 구동형으로 개조 개발한 엔진이다. 주요 개발 내용은 크게 엔진 장착 요구조건에 의한 후방 구동형 개조, 동력터빈 성능 향상 및 엔진 운전 신뢰성 향상을 위한 2채널 FADEC 시스템 적용 등이다. 따라서 T700/701K 엔진이 수리온에 장착되어 비행을 하기 위해서 엔진 개발규격서의 요구도를 검증하여 정부의 인증을 받아야 한다. 개조 개발에 따른 영향성을 고려하여 성능을 포함한 엔진 주요 요구도는 해석과 시험을 통하여, 그리고 T700-701C/D 엔진과 동일한 부품 및 모듈에 대한 요구도는 유사성(Similarity) 해석을 통하여 검증을 수행 중이며, 2012년 상반기에 군용항공기 감항인증 절차에 따라서 인증이 될 예정이다.

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국내 원자력발전소의 공기 압축기실에서 윤활유 화재의 위험성 분석을 위한 FDS의 활용 (Application of FDS for the Hazard Analysis of Lubricating Oil Fires in the Air Compressor Room of Domestic Nuclear Power Plant)

  • 한호식;황철홍;백경록;이상규
    • 한국안전학회지
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    • 제31권2호
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    • pp.1-9
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    • 2016
  • The standard procedure of fire modeling was reviewed to minimize the user dependence, based on the NUREG-1934 and 1824 reports. The hazard analysis of lubricating oil fires in the air compressor room of domestic nuclear power plant (NPP) was also performed using a representative fire model, FDS (Fire Dynamics Simulator). The area ($A_f$) and location of fire source were considered as major parameters for the realistic fire scenarios. As a result, the maximum probability to exceed the thermal damage criteria of IEEE-383 unqualified electrical cables was predicted as approximately 70% with $A_f=1m^2$. It was also found that for qualified electrical cables, the maximum probabilities of exceeding the criteria were 2% and 90% with $A_f=2$ and $4m^2$, respectively. It was concluded that all electrical cables should be replaced with IEEE-383 qualified cables and the dike to restrict as $A_f{\leq}2m^2$ should be installed at the same time, in order to assure the thermal stability of electrical cables for lubricating oil fires in the air compressor room of domestic NPP.

비디오 부가데이터 서비스를 위한 지상파 DMB 시스템 개발 (The Development of Terrestrial DMB System for Video Associated Data Services)

  • 김현순;경일수;김상훈;김만식
    • 방송공학회논문지
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    • 제11권4호
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    • pp.541-553
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    • 2006
  • 지상파 DMB (Digital Multimedia Broadcasting) 본 방송이 시작됨에 따라 고품질의 오디오, 비디오뿐만 아니라 부가 가치를 창출하기 위한 다양한 서비스 모델이 요구되고 있다. 본 논문은 이러한 서비스들 중 하나인 비디오 부가데이터 서비스를 위한 지상파 DMB 저작, 송출 시스템에 관한 것이다. 제안한 시스템은 국내 지상파 DMB 부가데이터 서비스 표준인 MPEG-4 BIFS(Binary Format for Scene) Core2D 장면서술 프로파일과 그래픽스 프로파일을 따른다. 본 시스템은 실시간 저작 수동 송출, 비실 시간 저작 자동 송출이라는 두 중요한 방송 요소를 제공하도록 설계되었으며, 양질의 콘텐츠를 효율적으로 제작하고 제작한 콘텐츠를 비디오 인코더와 연동하여 안정적으로 송출하는 데 중점을 두어 개발되었다. 제안한 시스템은 다양한 수신기와의 정합 실험을 통하여 그 성능을 입증하였으며, 추후 본 방송에 효율적으로 사용될 수 있을 것이다.

패션 유통업체 위탁교육 활성화 방안 (The Methods to Activate the Consigned Education of Fashion Retailing Companies in the Dept. of Fashion Design in Junior Colleges)

  • 김효은;구정모
    • 한국의상디자인학회지
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    • 제5권1호
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    • pp.97-107
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    • 2003
  • This study was conducted to provide the basic data to activate the consigned education of fashion retailing company in the department of fashion design in a junior college. 36 consigned education students from fashion retailing company in Daegu were surveyed and interviewed. The result can be summarized as follows: 1. Their motives of study lie in ‘I wanted to study in a junior college’ (55.6%), ‘It would be some help for my job’. ‘My company recommended’ (16.7%), and ‘I wanted to get a higher degree’ (11.1%). 2. Their preferences in terms of major and subjects lie in ‘fashion marketing’ (30.6%), ‘fashion coordination’ (25.0%), and ‘fashion information’ (19.4%). 3. The occupations they wanted to get are ‘a displayer’ (38.9%), and ‘a shop master’ (30.6%), and ‘a merchandiser’ (8.3%). 4. The ratio of theories to practices they want is ‘40:60ㆍ30:70’ (27.8%), ‘50:50’ (22.2%), ‘20:80’ (11.1%) 5. With regard to their adaptability in school, they answered that ‘I'm doing quite well’ (44.4%), ‘I'm doing OK’. ‘It's a little hard to follow’ (22.2%) 6. About teaching methods and contents, they responded that they want ‘more emphasis on practices’ (41.7%), and they commented that ‘teachers are focused on the syllabus procedure rather than students’ practical improvement’ (19.4%), and ‘I feel loaded with too much assignment’ (13.9%) 7. They wanted to be taught by ‘professors’ (77.8%) and ‘professionals in the field’ (19.4%) In conclusion, it is required that both the college and the company need to develop a customized education program focusing on the field training specialized by their cooperation and constant researches. On the part of junior colleges, adjusting their educational directions to the trend of the 21st century, they need to focus on nurturing the consigned students to be highly qualified professionals required by the industry, using hi-tee equipment and facilities through academic and industrial cooperation.

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경기도 가족계획 요원의 가족계획사업 수행에 필요한 지식이해에 관한 조사연구 (Study on Needed Professional Knowledge and Understanding of Family Planning Workers in Kyonggi-Do, Korea)

  • 이광옥
    • 대한간호학회지
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    • 제2권1호
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    • pp.159-174
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    • 1971
  • The Family Planning Program has teen intensively implemented in Korea by the national policy since 1962. However, the desired effective results were not fully obtained by many reasons such as the shortage of qualified workers, lack of eligible women's cooperation and understanding of the importance of family planning etc., The field family planning workers is classified into two categories along the governmental personnel order; the senior field worker and the assistant field worker. The former is qualified licensed nurse and the latter same as the former of a certified nurses-aid. These family planning worker's roles are somewhat in change not only in field education, distribution of contraceptions, administrating mother's class of assistant field workers but also responsible for the senior field workers such as recording, reporting and keeping statistics. Therefor, the desired success of family planning programming in Korea depends on family planning worker's professional abilities and activities in the field. In aiming to study on professional knowledge of the above two kinds of family planning workers, the following results were obtained through a field survey with question airs done as of October, 1970 in Kyonggi-Do. 1. Working term of the family planning workers in average were less than two years. The younger the assistant Field workers were, the earlier they left job. 2. The assistant field workers selected their job in order to the superficial rather than implementing job itself. 3. Most of the workers either in the health center or in the Up-Myun had a better understanding concerning with their job ; contraceptive methods, maintenance of equipment and drug keeping, and other administrative procedures, etc., 4. They had relatively better understanding and sufficient knowledge about contraception itself and application of it's methods and side effects in detail too, but less knowledges for the care after. 5. It was hard to Find out any differences in administrative knowledge and demographic understanding. 5. It is fully agreed upon that the longer the worker have experienced with the program, the more skilful she applied. 7. The worker who had training whether pre-service or insertive are working more effectively than the untrained. 8. The fundamental demographic knowledge is recommended to obtain for the workers in Kyonggi-Do.

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