• Applied Microscopy
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• 제50권
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• pp.2.1-2.7
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• 2020

Electron energy loss spectroscopy (EELS) is an analytical technique that can provide the structural, physical and chemical information of materials. The EELS spectra can be obtained by combining with TEM at sub-nanometer spatial resolution. However, EELS spectral information can't be obtained easily because in order to interpret EELS spectra, we need to refer to and/or compare many reference data with each other. And in addition to that, we should consider the different experimental variables used to produce each data. Therefore, reliable and easily interpretable EELS standard reference data are needed. Our Electron Energy Loss Data Center (EELDC) has been designated as National Standard Electron Energy Loss Data Center No. 34 to develop EELS standard reference (SR) data and to play a role in dissemination and diffusion of the SR data to users. EELDC has developed and collected EEL SR data for the materials required by major industries and has a total of 82 EEL SR data. Also, we have created an online platform that provides a one-stop-place to help users interpret quickly EELS spectra and get various spectral information. In this paper, we introduce EEL SR data, the homepage of EELDC and how to use them.

• 분석과학
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• 제15권6호
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• pp.580-583
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• 2002

New approach is developed employing the overall uncertainty obtained from multiple measurements to evaluate the statistical significance for the difference between a given reference value and its measured value determined in a lab. The overall uncertainty is determined by separate combinations of the uncertainties arising from systematic and random effects. It is shown that the uncertainty term in regular t-test can be underestimated by n measurements.

• 한국IT서비스학회지
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• 제12권1호
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• pp.115-130
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• 2013

This paper describes Cross reference services in Knowledge contents based on UCI. Cross references are effective features that can increase the value of the contents. Knowledge contents include academic papers, research reports, archives, historical and cultural heritage, and professional databases. Cross references are consists of reference-to and cited-by links which can be made by reference list in article. Some of cross reference services provided are considered. We designed cross reference services for knowledge contents in Korea and prototype services are provided. The reference linking service in the area of national R&D will enable the linking of heterogeneous information produced at different sources.

• 한국도서관정보학회지
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• 제36권2호
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• pp.241-262
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• 2005

본 연구에서는 국내 4년제 대학 도서관 중 접속 가능한 236곳의 도서관 홈페이지 분석을 통하여 디지털참고봉사의 제공 및 접근성과 이용 실태에 대해 조사하였다. 진정한 의미의 디지털 참고봉사 즉, 참고질의 응답을 제공하는 대학도서관은 236개 대학 도서관 중 $36.9\%$인 87개 기관으로 우리나라에서 전통적인 참고봉사의 부진이 디지털 환경에서도 나타나는 것으로 파악되었다. 디지털 참고봉사를 적극적으로 활용한다면 전통적인 참고봉사의 부진을 씻고 참고 봉사의 새로운 전환점이 될 수 있을 것으로 판단되며, 분석결과를 바탕으로 현 디지털 참고봉사 시스템의 현황과 문제점을 파악하고 그 발전방향을 제언하였다.

• 한국도서관정보학회지
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• 제30권4호
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• pp.351-370
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• 1999

This paper aims to study on bibliographic reference forms, especially focused on the forms of korean sources. Although bibliographic reference is one of the critical elements in academic works, it seems every work has it's own forms in Korea. The fact that the bibliographic reference forms in korean works are made up by option causes the present state of diversity which makes difficulty in bibliographic control. The results of this search into internal academic journals show the diversity in the entry of title and significant gap of bibliographic reference forms among disciplines.

• 한국주거학회논문집
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• 제23권6호
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• pp.11-20
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• 2012

This Study developed library of parts, applied with 3-dimension character which has width, length and height and a reference plane, for the system development of BIM design on housing unit modular. The current BIM software has not the concept of a reference plane or work tolerance in modular, so the development of parts library applied to unit modular has not moved forward. So, we developed, in this study, parts library applied to windows, built-in-furniture, kitchen systems and knock down bathrooms, with a reference plane and work tolerance based on single roon prototype on urban-life-housings. BIM library can utilize changed size and work tolerance of parts, and fabricating reference plane will be created automatically when an engineer puts work tolerance in the BIM library with supplement of some category related to work reference. Through this BIM library development, we consider the part module can be used for housing complex planning, and architectural designers will be able to utilize the BIM library for housing complex design.

• 천문학회보
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• 제46권2호
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• pp.76.3-77
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• 2021

GMT secondary mirror system consists of 7 segmented adaptive mirrors. Each segment consists of a thin shell mirror, actuators and a reference body. The thin shell has a few millimeters of thickness so that it can be easily bent by push and pull force of actuators to compensate the wavefront disturbance of light due to air turbulence. The one end of actuator is supported by the reference body and the other end is adapted to this thin shell. One of critical role of the reference body is to provide the reference surface for the thin shell actuators. Therefore, the reference body is one of key components to succeed in development of GMT ASM. Recently, Korea Research Institute of Standards and Science (KRISS) and University of Arizona (UA) has signed a contract that they will cooperate to develop the first set of off-axis reference body for GMT ASM. This project started August 2021 and will be finished in Dec. 2022. The reference body has total 675 holes to accommodate actuators and 144 pockets for lightweighting. The rear surface has a curved rib shape with radius of curvature of 4387 mm with offset of 128.32mm. Since this reference body is placed just above the thin shell so that the front surface shape needs to be close to that of thin shell. The front surface has a concave off-axis asphere, of which radius of curvature is 4165.99 mm and off-axis distance is about 1088 mm. The material is Zerodur CTE class 1 (CTE=0.05 ppm/oC) from SCHOTT. All the actuator holes and pockets are machined normal to the front surface. It is a very complex challenging optical elements that involves sophisticated machining process as well as accurate metrology. After finishing the fabrication of reference body in KRISS, it will be shipped to UA for final touches and finally sent to Adoptica in Italy, in early 2023. This paper presets the development plan for the GMT ASM Reference Body and relevant fabrication and metrology plans.

• 한국도서관정보학회지
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• 제23권
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• pp.253-284
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• 1995

The purpose of this paper is to analyse the current status of reference education and to suggest directions for reference education in America and in Korea. For this purpose, the historical developments of reference services, and the names, problems and changes of reference courses are studied. The findings of the study can be summarized as follows; 1. The names of reference courses are various. In America, On-Line Services or Information Services are used in general, but in Korea, Reference Services are widely used. 2. In America, some library schools have only subject literature courses including business, law, music, etc. instead of basic reference courses. 3. Only one reference course is given by most schools in America and in Korea. However, a few schools which have no graduate courses provide two reference courses in Korea. 4. Analysis of textbooks used in reference courses shows that Reference Research by Joon-Shik Park, Reference Services and Reference Sources by Ock-Soon Noh are used in general. In addition, Introduction to Reference Work by Katz is used. 5. Lecture methods are generally used in teaching reference courses, but reviews of reference materials in library, class presentation, and case study method are also used. It is desirable that role playing and pathfinders' used in U.S. are introduced to our schools. 6. Analysis of library user instruction courses in Korea shows that 7 of 11 universities have the courses,, only one university teaches library user instruction as a part of reference courses, 3 universities don't. 7. Analysis of opinions about the directions for reference education shows that changes of reference courses names, expansion of courses contents, emphasis on communication technique, changes of teaching methods, proper combination of theory vs. practice, an increase in electronic reference education and training of subject specialist are needed.

• 대한토목학회논문집
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• 제31권6D호
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• pp.765-769
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• 2011

기존의 이동식 기준장비는 갓길의 폭이 1.5m 이하인 도로 구간에는 설치가 어려우며 장비가 크고 무거워서 차량과의 충돌 시 피해가 클 수 있으며 한 번에 다차로 검지가 불가능하다. 본 연구에서는 이러한 문제점을 노정하고 있는 기존의 이동식 기준장비의 단점을 극복하기 위하여 연구 개발된 USN-기반 이동식 기준장비의 특징을 기술하고 그 성능수준을 현장 적용을 통하여 평가하였다. 그 결과 본 연구에서 개발된 장비는 기존의 이동식 기준장비가 가지고 있는 운영상의 단점을 극복할 뿐 아니라 기준장비가 가져야 할 성능수준을 만족하는 것으로 나타났다.

• Journal of Mechanical Science and Technology
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• 제18권3호
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• pp.337-346
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• 2004

The control scheme using fuzzy modeling and Parallel Distributed Compensation (PDC) concept is proposed to provide asymptotic tracking of a reference signal for the flexible joint manipulators with uncertain parameters. From Lyapunov stability analysis and simulation results, the developed control law and adaptive law guarantee the boundedness of all signals in the closed-loop multi-input/multi-output system. In addition, the plant state tracks the state of the reference model asymptotically with time for any bounded reference input signal.