• 제목/요약/키워드: Function Classification System

검색결과 529건 처리시간 0.03초

축열시스템의 종류 및 열에너지 공급시스템에서의 역할 (Classification and function of the Storage System in the Thermal Energy Supply System)

  • 이동원;조수;장철용
    • 한국태양에너지학회:학술대회논문집
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    • 한국태양에너지학회 2008년도 추계학술발표대회 논문집
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    • pp.141-146
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    • 2008
  • For the efficient use of thermal energy and its related equipments, optimal energy in view of quality and quantity should be timely provided. The core of thermal energy storage technology deals with an energy efficiency for effective energy storage and supply. The relative importance of thermal energy storage technology has been underestimated so far, and the specific projects on this filed have been performed intermittently. For the efficient and systematic approach of the energy supply system projects on thermal energy storage technology, we conduct the survey on the current status of this field. Firstly, classify into the thermal energy storage and describing the recent research for each system. The necessity and importance of thermal energy storage technology is identified through this study. It reveals that the thermal energy storage is the mandatory technology to solve the difference of supply and demand in thermal loads. It would greatly contribute to the combined heat and power(CHP) system. The urgent technologies for the commercial value and the core technologies for the CHP system are classified with this study.

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연구기관 생산 지식정보자원 관리에 관한 연구: 교육연구기관 홈페이지를 중심으로 (Management of Knowledge and Information Resources Made by Research Institutes: Focusing on the Homepags of Educational Research Institutes)

  • 이명희
    • 한국도서관정보학회지
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    • 제46권1호
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    • pp.177-202
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    • 2015
  • 본 연구는 교육연구기관에서 생산된 지식정보자원이 기관의 지식관리시스템으로 역할을 수행하는지 살펴보고, 국가지식관리시스템의 방안 제시를 위하여 시도되었다. 홈페이지에서 제공되는 지식정보자원을 '결과의 지식정보자원', '과정의 지식정보자원', '소통의 지식정보자원'으로 분류하고, 내용분석법을 사용하여 메타데이터의 적용 현황, 검색시스템의 구성 현황을 분석하였다. 연구결과, 홈페이지 지식정보자원 관리의 개선을 위하여 표준화된 유형별 메타데이터와 분류체계의 개발, 홈페이지가 기관 생산지식정보자원의 대외 유통 창구라는 인식 고취, 홈페이지 지식정보자원에 대한 다양한 검색기능과 지식지도 제공, 원문 획득을 위한 연계정보 제공, 조직 운영자와 홈페이지 관리자의 기관 홈페이지에 대한 지식관리시스템으로서의 인식, 모바일 환경에 적합한 데이터 크기 분할과 제공 단위의 다양화 작업, 내부 전자결재시스템과 홈페이지의 유기적인 연계 기능을 제시하였다.

윤활유 필터의 종류 및 특징 (Types and Characteristics of Lubricant Filters)

  • 홍성호;신주용;박태성;이상후
    • Tribology and Lubricants
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    • 제39권4호
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    • pp.133-138
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    • 2023
  • This paper presents a discussion on lubricating oil filters. The maintenance of lubricating oil filters can improve the performance of mechanical systems and extend the service life of the lubricating oil. Therefore, the effective management of the lubricating oil can extend the service life of the machine and reduce maintenance costs. A representative method for managing lubricating oil is filtering the lubricating oil using a lubricant filter. However, effectively managing a lubricating oil using a lubricant filter requires an understanding of the related knowledge. In this paper, we present the definition, classification, characteristics, specifications, performance, and self-cleaning function of lubricating oil filters. The lubricant filters are classified based on the filter material, filtering method, filtering location, and amount of filtered fluid. Cellulose and glass fiber materials are conventionally used as materials for lubricant filters, and recently, metal materials, which show excellent durability, are being increasingly adopted. The filtering methods can be classified into physical, chemical, magnetic, and electric field methods, and the lubricant filters can be classified according to their location in the lubrication system. The beta ratio and efficiency of the lubricant filter can be determined based on the performance of the filter. Finally, there are many products or technologies that add a self-cleaning function to the filter to remove foreign substances or contaminants for efficient management.

제품 및 서비스 개선을 위한 기술기회 발굴: 특허와 상표 데이터 활용 (Enhancing Existing Products and Services Through the Discovery of Applicable Technology: Use of Patents and Trademarks)

  • 박서인;이지호;이승현;윤장혁;손창호
    • 산업경영시스템학회지
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    • 제46권4호
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    • pp.1-14
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    • 2023
  • As markets and industries continue to evolve rapidly, technology opportunity discovery (TOD) has become critical to a firm's survival. From a common consensus that TOD based on a firm's capabilities is a valuable method for small and medium-sized enterprises (SMEs) and reduces the risk of failure in technology development, studies for TOD based on a firm's capabilities have been actively conducted. However, previous studies mainly focused on a firm's technological capabilities and rarely on business capabilities. Since discovered technologies can create market value when utilized in a firm's business, a firm's current business capabilities should be considered in discovering technology opportunities. In this context, this study proposes a TOD method that considers both a firm's business and technological capabilities. To this end, this study uses patent data, which represents the firm's technological capabilities, and trademark data, which represents the firm's business capabilities. The proposed method comprises four steps: 1) Constructing firm technology and business capability matrices using patent classification codes and trademark similarity group codes; 2) Transforming the capability matrices to preference matrices using the fuzzy function; 3) Identifying a target firm's candidate technology opportunities using the collaborative filtering algorithm; 4) Recommending technology opportunities using a portfolio map constructed based on technology similarity and applicability indices. A case study is conducted on a security firm to determine the validity of the proposed method. The proposed method can assist SMEs that face resource constraints in identifying technology opportunities. Further, it can be used by firms that do not possess patents since the proposed method uncovers technology opportunities based on business capabilities.

범용 전문가시스템 쉘을 이용한 선박의 구조설계 지원 시스템 (A Design Support System for the Structural Design of Ships Based on an Expert System Development Shell)

  • 한순홍;이경호;이동곤;김은기;이규철
    • 대한산업공학회지
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    • 제19권2호
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    • pp.83-93
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    • 1993
  • Conventional computer programs developed and used by practicing engineers can be considered to contain expert knowledge and design experience. If these conventional programs are converted into expert systems, the difficult and time consuming process of knowledge acquisition can be simplified. Also the constructed knowledge-base can have higher confidence level than that constructed by the usual knowledge acquisition method of interviews. An existing computer program which is being used by ship structural designers has been reformulated as a design expert system by applying an expert system development shell-Nexpert. Utilizing the callable interface provided by the development shell, external design tools have also been integrated. The interfaced external functions are a graphical user interface (GUI) for the design process control, and graphics functions for the visualization of design results. It is observed that the developed system for design support is useful in two aspects. The trace-back function shows what portion of design rules are applied in arriving at certain design decisions. Also the knowledge-base can be conveniently updated as design rules of the classification societies are updated.

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DEVELOPMENT OF AN OPERATION STRATEGY FOR A HYBRID SAFETY INJECTION TANK WITH AN ACTIVE SYSTEM

  • JEON, IN SEOP;KANG, HYUN GOOK
    • Nuclear Engineering and Technology
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    • 제47권4호
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    • pp.443-453
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    • 2015
  • A hybrid safety injection tank (H-SIT) can enhance the capability of an advanced power reactor plus (APR+) during a station black out (SBO) that is accompanied by a severe accident. It may a useful alternative to an electric motor. The operations strategy of the H-SIT has to be investigated to achieve maximum utilization of its function. In this study, the master logic diagram (i.e., an analysis for identifying the differences between an H-SIT and a safety injection pump) and an accident case classification were used to determine the parameters of the H-SIT operation. The conditions that require the use of an H-SIT were determined using a decision-making process. The proper timing for using an H-SIT was also analyzed by using the Multi-dimensional Analysis of Reactor Safety (MARS) 1.3 code (Korea Atomic Energy Research Institute, Daejeon, South Korea). The operation strategy analysis indicates that a H-SIT can mitigate five types of failure: (1) failure of the safety injection pump, (2) failure of the passive auxiliary feedwater system, (3) failure of the depressurization system, (4) failure of the shutdown cooling pump (SCP), and (5) failure of the recirculation system. The results of the MARS code demonstrate that the time allowed for recovery can be extended when using an H-SIT, compared with the same situation in which an H-SIT is not used. Based on the results, the use of an H-SIT is recommended, especially after the pilot-operated safety relief valve (POSRV) is opened.

중국의 사지서목에 대하여 -육사예문$\cdot$경적지의 분류 및 편목체재 비교를 중심으로- (On the Bibliographies of Chinese Historical Books - Classifying and cataloguing system of six historical bibliographies -)

  • 강순애
    • 한국문헌정보학회지
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    • 제24권
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    • pp.289-332
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    • 1993
  • In china, six bibliographies of offical historical books are evaluated at the most important things among the systematically-editing bibliographies. These bibliographies would be usful to study the orign of classical sciences and their development, bibliographic research of Chinese classics, bibliographic judgement on genuine books, titles, authors, volumes. They could be refered to research into graving, correcting, and existence of ancient books. therefore, these bibliographies would be applied to estimation the phase of scientific and cultural development. The study of these bibliographies has been not yet made in Korea. This thesis lays its importance on the background of their appearance, their classification norms, organizing system of their catalogue, and comparison between their difference. 1. Editing and compiling of Chilyak (칠약) by Liu Chin (유흠) and official histories played an important role of entering an apperance of historical book's bibliographies. Chilyak has been lost. However, its classification and compiling system of classical books would be traced by Hansoyemunji(한서예문지) of which basic system is similar to Chilyak. It classified books according to their scientific characteristic. If a few books didn't have their own categories, they were combined by the circles parallel to the books' characteristic. With the books classified under the same scientific characteristic, they were again divided into the scientific schools or structures. It also arranged the same kinds of books according to the chronology. The some books wi th duplicate subjects were classified multiplely by their duplicate subject. 2. Ssu-ma Chon's (사마천) The Historical Records (Saki, 사기) and Pan Ku's (반고) The History of the Former Han Dynasty (Hanso, 한서) has also took effects on appearance of historical books' bibliographies. Covering overall history, Saki was structured by the five parts: The basic annals(본기), the chronological tables (표), the documents (서), the hereditary houses (세가), biographies (열전). The basic annals dealt with kings and courts' affairs according to the chronology. The chronological tables was the records of the annals. The documents described overall the social and cultural systems. The hereditary houses recorded courts' meritorious officials and public figures. The biographies showed exemplars of seventy peoples selected by their social status. Pan Ku(반구)'s The History of the Former Han Dynasty(한서) deserved to be called the prototype for the offical histories after Saki's (사기; The Historical Records) apperance. Although it modelled on Saki, it had set up its own cataloguing system. It was organized by four parts; the basic annals (본기), the chronological tables (표), treatises(지), biographies (열전). The documents in the Hanso(한서) was converted into treatises(지). The hereditary houses and biographies were merged. For the first time, the treatise with The Yemunji could operate function for historical bibliographies. 3. There were six historical bibliographies: Hansoyemunji(한서예문지), Susokyongjeokji (수서경적지), Kudangsokyongjeokji(구당서경적지), Shindangsoyemunji (신당서예문지), Songsayemunji (송사예문지), Myongsayemunji (명사예문지). 1) Modelling on Liu Chin's Chilyak except Chipryak(집략), Hansoyemunji divided the characteristic of the books and documents into six parts: Yukrye(육예), Cheja(제자), Shibu(시부), Pyongsoh(병서), Susul(수술), Pangki(방기). Under six parts, there were thirty eight orders in Hansoyemunji. To its own classification, Hansoyemunji applied the Chilyak's theory of classification that the books or documents were managed according to characteristic of sciences, the difference of schools, the organization of sentences. However the overlapped subjects were deleted and unified into one. The books included into an unsuitable subject were corrected and converted into another. The Hansoyemunji consisted of main preface (Taesoh 대서), minor preface (Sosoh 소서) , the general preface (Chongso 총서). It also recorded the introduction of books and documents, the origin of sciences, the outline of subjects, and the establishment of orders. The books classified by the subject had title, author, and volumes. They were rearranged by titles and the chronological publication year. Sometimes author was the first access point to catalogue the books. If it was necessary for the books to take footnotes, detail notes were formed. The Volume number written consecutively to order and subject could clarify the quantity of books. 2) Refering to Classfication System by Seven Norms (칠분법) and Classification System by Four Norms(사분법), Susokyongjeokji(수서경적지) had accomplished the classification by four norms. In fact, its classification largely imitated Wanhyosoh(완효서)'s Chilrok(칠록), Susokyongjeokji's system of classification consisted of four parts-Kyung(경), Sa(사), Cha(자), Chip(칩). The four parts were divided into 40 orders. Its appendix was again divided into two parts, Buddihism and Taiosm. Under the two parts there were fifteen orders. Totally Susokyongjeokji was made of six parts and fifty five orders. In comparison with Hansoyemunji(한서예문지), it clearly showed the conception of Kyung, Sa, Cha, Chip. Especially it deserved to be paid attention that Hansoyemunji laied history off Chunchu(춘추) and removed history to Sabu(사부). However Chabu(사부) put many contrary subjects such as Cheja(제자), Kiye(기예), Sulsu(술수), Sosol(소설) into the same boundary, which committed errors insufficient theoretical basis. Anothor demerit of Susokyongjeokji was that it dealt with Taiosm scriptures and Buddism scriptures at the appendix because they were considered as quasi-religion. Its compilation of bibliographical facts consisted of main preface(Taesoh 대서), minor preface(Sosoh 소서), general preface (Chongsoh 총서), postscript (Husoh 후서). Its bibliological facts mainly focused on the titles. Its recorded authors' birth date and their position. It wrote the lost and existence of books consecutive to total number of books, which revealed total of the lost books in Su Dynasty. 3) Modelling on the basis of Kokumsorok(고분서록) and Naewaekyongrok(내외경록), Kudangsokyongjeokji(구당서경적지) had four parts and fourty five orders. It was estimated as the important role of establishing basic frame of classification by four norms in classification theory's history. However it had also its own limit. Editing and compling orders of Kudangsokyongjeokji had been not progressively changed. Its orders imitated by and large Susokyongjeokji. In Its system of organizing catalogue, with its minor preface and general preface deleting, Kudangsokyongjeokji by titles after orders sometimes broke out confusion because of unclear boundaries between orders. 4) Shindangsoyemunji(신당서예문지), adding 28,469 books to Kudangsokyongjeokji, recorded 82,384 books which were divided by four parts and fourty four orders. In comparison with Kudangkyongjeokj, Sindangsoyemunji corrected unclear order's norm. It merged the analogical norms four orders (for instance, Kohun 고훈 and Sohakryu 소학류) and seperated the different norms four orders (for example, Hyokyong 효경 and Noneuhryu 논어류, Chamwi 참위 and Kyonghaeryu 경해류, Pyonryon 편년 and Wisaryu 위사류). Recording kings' behaviors and speeches (Kikochuryu 기거주류) in the historical parts induced the concept of specfication category. For the first time, part of Chipbu (집부) set up the order of classification norm for historical and literatural books and documents (Munsaryu 문사류). Its editing and compiling had been more simplified than Kudangsokyongjeokji. Introduction was written at first part of bibliographies. Appendants except bibliographic items such subject, author, title, volume number, total were omitted. 5) Songsayemunji(송사예문지) were edited in the basis of combining Puksong(북송) and Namsong(남송), depending on Sabukuksayemunji(사부국사예문지). Generally Songsayemunji had lost a lot of bibliographical facts of many books. They were duplicated and wrongly classified books because it committed an error of the incorrectly annalistic editing. Particularly Namsong showed more open these defaults. Songsayemunji didin't include the books published since the king Youngchong(영종). Its system of classification was more better controlled. Chamwiryu(참위류) in the part of Kyongbu(경부) was omitted. In the part of history(Sabu 사부), recordings of kings' behaviors and speeches more merged in the annals. Historical abstract documents (Sachoryu 사초류) were seperately arranged. In the part of Chabu(자부), Myongdangkyongmaekryu(명당경맥류) and Euisulryu(의술류) were combined. Ohangryu(오행류) were laied off Shikuryu(시구류). In the part of Chipbu(집부), historical and literatural books (Munsaryu 문사류) were independentely arranged. There were the renamed orders; from Wisa(위사) to Paesa(패사), Chapsa (잡사) to Pyolsa(열사), Chapchonki(잡전기) to Chonki(전기), Ryusoh(류서) to Ryusa(류서). Introduction had only main preface. The books of each subject catalogued by title, the volume number, and author and arranged mainly by authors. Annotations were written consecutively after title and the volume number. In the afternote the number of not-treated books were revealed. Difference from Singdangsohyemunji(신당서예문지) were that the concept and boundary of orders became more clearer. It also wrote the number of books consecutive to main subject. 6) Modelling on Chonkyongdangsomok (경당서목), Myongsayemunji(명사예문지) was compiled in the basis of books and documents published in the Ming Danasty. In classification system, Myongsayemunji partly merged and the seperated some orders for it. It also deleted and renamed some of orders. In case of necessity, combining of orders' norm was occured particulary in the part of Sabu(사부) and Chabu(자부). Therefore these merging of orders norm didn't offer sufficient theretical background. For example, such demerits were seen in the case that historical books edited by annals were combined with offical historical ones which were differently compiled and edited from the former. In the part of Chabu(자부), it broke out another confusion that Pubga(법가), Meongga(명가), Mukga(묵가), Chonghweongka's(종횡가) thoughts were classified in the Chapka(잡가). Scriptures of Taiosim and Buddhism were seperated from each other. There were some deleted books such as Mokrokryu(목록류), Paesaryu(패사류) in the part of history (Sabu 사부) and Chosaryu(초사류) in the part of Chipbu(집부). The some in the each orders had been renamed. Imitating compiling system of Songsayemunji(송사예문지), with reffering to its differ-ence, Myongsayemunji(명사예문지) wrote the review and the change of the books by author. The number of not-treated books didn't appear at the total. It also deleted the total following main subject.

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아동을 대상으로 한 감각통합치료의 중재효과에 대한 체계적 고찰: 국내 연구를 중심으로 (A Systematic Review of Sensory Integration Intervention for Children in Korea)

  • 홍은경
    • 대한감각통합치료학회지
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    • 제18권2호
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    • pp.55-68
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    • 2020
  • 목적 : 본 연구에서는 최근 10년간 국내에서 발표된 아동 감각통합치료에 대한 중재효과를 체계적으로 분석하여 이해하기 쉽도록 제시하고자 한다. 연구방법 : 학술연구정보서비스(RISS)와 디비피아(DBpia)의 검색엔진을 사용하여 2011년에서 2020년 6월까지 출판된 국내 논문을 대상으로 하였다. 검색어는 "감각통합", "감각처리", "ASI(Ayres Sensory Integration)"이었다. 총 19개의 논문을 분석하였다. 연구결과는 PICO(Population, Interventions, Outcomes, Comparisons), 국제기능장애 건강분류(International Classification of Function, Disability and Health; ICF)방법과 수정한 The Evidence Alert Traffic Light Grading System을 사용하여 그림으로 제시하였다. 결과 : 아동 감각통합치료를 가장 많이 적용한 진단은 발달지연이었고, 중재법은 개별 감각통합치료가 가장 많았다. ICF의 신체구조 및 기능에 해당하는 중재는 91%에서 긍정적인 효과를 보였다, 세부 영역은 감각조절 및 감각처리, 소운동과 대운동, 신체도식, 신체-자기개념, 균형, 기본 움직임, 자세조절 및 손기능, 집중, 자존감이었다. 결론 : 아동 감각통합치료의 중재효과를 ICF의 분류와 그림으로 간단히 제시하여 치료사, 연구자, 아동의 가족들이 쉽게 이해하고 이용할 수 있는 근거를 마련하고자 하였다.

초점불완전 열화추정 및 영상복원기법을 사용한 자동초점시스템 (A Digital Auto-Focusing Algorithm Using Point spread function Estimation Image Restoration)

  • 김상구;박상래;백준기
    • 전자공학회논문지S
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    • 제36S권2호
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    • pp.57-62
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    • 1999
  • 점확산 함수(point spread function: PSF)의 정확한 주정은 복원결과가 원 영상에 얼마나 근접할 수 있는가를 결정한다는 점에서 영상처리의 중요한 연구 주체중의 하나가 된다. 본 논문에서는 PSF를 추정하기 위한 새로운 알로리즘을 제안하고, 이를 영상복원에 적용한 후 이를 기반으로 완전 디지털 자동초점 시스템을 제안한다. 자동초점시스템을 구현하기 위한 과정은 두 단계로 구성되어 있는데, 즉 에지 분류을 통한 PSF측정과, 이를 이용한 영상복원이다. 보다 구체적으로, 입력 영상을 다수의 소 영상 혹은 블록으로 분할한 뒤, 에지를 포함하고 있는 블록들로부터 단위계단응답을 구하여 평균한 후, 2차원 등방성 PSF를 추정한다. 마지막으로 추정된 PSF를 사용하여 영상복원을 수행함으로써 맞는 영상을 구한다.

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선택적 운동 조절 척도와 기능적 수행도 평가 간의 상관: 경직형 뇌성마비 아동을 대상으로 (Correlation Between Selective Motor Control Test and Functional Performance Evaluation in Children With Spastic Cerebral Palsy)

  • 박은영
    • 한국콘텐츠학회논문지
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    • 제12권7호
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    • pp.232-239
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    • 2012
  • 이 연구는 경직형 뇌성마비 아동의 운동 손상를 측정하는 도구로서 선택적 운동조절능력 척도에 대한 기초 자료를 제공하고 선택적 운동조절능력과 대동작 기능 분류 체계, 대동작 기능 평가 결과, 그리고 일상 생활동작 평가 결과 사이의 상관성을 알아보는데 그 목적이 있다. 이를 위해 68명의 경직형 뇌성마비 아동을 대상으로 선택적 운동조절능력, 대동작 기능 분류 체계 평가, 대동작 기능 평가, 그리고 일상생활동작 평가를 실시하고 상관을 알아보았다. 그 결과 선택적 운동 조절 척도 등급은 대동작 기능 분류 체계 평가(r = -.485)와 대동작 기능 평가(r = .482)와 유의한 상관을 보였다(p<.05). 하지만 일상생활동작과는 유의한 상관을 보이지 않았다(p>.05). 이는 이 척도가 경직형 뇌성마비 아동의 운동 손상 중 선택적 운동조절능력을 평가하는 평가도구로써 유용하게 사용될 수 있음을 시사한다.