• 천문학회보
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• 제43권2호
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• pp.57.2-57.2
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• 2018

In astronomical observation, sequential device control and real-time data processing are important to maximize observing efficiency. We have developed series of automatic observing software (KAOS, KHU Automatic Observing Software), e.g. KAOS30 for the 30 inch telescope in the McDonald Observatory and KAOS76 for the 76 cm telescope in the KHAO. The series consist of four packages: the DAP (Data Acquisition Package) for CCD Camera control, the TCP (Telescope Control Package) for telescope control, the AFP (Auto Focus Package) for focusing, and the SMP (Script Mode Package) for automation of sequences. In this poster, we introduce KAOS10 which is being developed for controlling a small telescope such as aperture size of 10 cm. The hardware components are the QHY8pro CCD, the QHY5-II CMOS, the iOptron CEM 25 mount, and the Stellarvue SV102ED telescope. The devices are controlled on ASCOM Platform. In addition to the previous packages (DAP, SMP, TCP), KAOS10 has QLP (Quick Look Package) and astrometry function in the TCP. QHY8pro CCD has RGB Bayer matrix and the QLP transforms RGB images into BVR images in real-time. The TCP includes astrometry function which adjusts the telescope position by comparing the image with a star catalog. In the future, We expect KAOS10 be used on the research of transient objects such as a variable star.

• Imaging Science in Dentistry
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• 제45권1호
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• pp.41-47
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• 2015

Purpose: This study was performed to evaluate the linear distance accuracy and reliability of stitched small field of view (FOV) cone-beam computed tomography (CBCT) reconstructed images for the fabrication of implant surgical guides. Material and Methods: Three gutta percha points were fixed on the inferior border of a cadaveric mandible to serve as control reference points. Ten additional gutta percha points, representing fiduciary markers, were scattered on the buccal and lingual cortices at the level of the proposed complete denture flange. A digital caliper was used to measure the distance between the reference points and fiduciary markers, which represented the anatomic linear dimension. The mandible was scanned using small FOV CBCT, and the images were then reconstructed and stitched using the manufacturer's imaging software. The same measurements were then taken with the CBCT software. Results: The anatomic linear dimension measurements and stitched small FOV CBCT measurements were statistically evaluated for linear accuracy. The mean difference between the anatomic linear dimension measurements and the stitched small FOV CBCT measurements was found to be 0.34 mm with a 95% confidence interval of +0.24 - +0.44 mm and a mean standard deviation of 0.30 mm. The difference between the control and the stitched small FOV CBCT measurements was insignificant within the parameters defined by this study. Conclusion: The proven accuracy of stitched small FOV CBCT data sets may allow image-guided fabrication of implant surgical stents from such data sets.

• 디지털융복합연구
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• 제8권4호
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• pp.35-46
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• 2010

SW산업의 생산요소는 인적자원이 대부분을 차지하고 있기 때문에 SW의 경쟁력을 결정하는 핵심요소는 인적자원이라 할 수 있다. 그러나 국내 IT 산업 현장에서의 SW인력에 대한 경제적 대우나 사회적 가지는 제대로 인정되지 않고 있는 실정이다. 이에 정부는 SW산업 육성정책을 지속적으로 추진해 왔다. 그러나 정부의 SW산업 육성정책은 대부분 기업의 국내 시장조성, 국제 경쟁력 제고, 중소벤처의 경쟁기반 강화 등에 초점을 맞추고 있어 핵심요소인 인력에 대한 정책은 소외되어 온 게 사실이다. 이에 본 연구는 SW기술인력에 대한 정책 필요성을 제기하면서 현 SW산업정책의 분석과 이의 개선을 위한 정책대안을 제시하고자 한다. 이를 위한 연구의 중점은 SW산업 정책 관련 주요변수들 간의 구조관계분석에 있으며, 이 구조관계분석을 통해 증명된 내용을 토대로 SW인력의 처우개선 방안을 제시할 것이다.

• 한국문헌정보학회지
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• 제52권3호
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• pp.247-271
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• 2018

본 연구는 도서관, 기록관, 박물관 등 전문적인 기관에서 기록물을 보존하고 관리하는 중앙 집중식 디지털 아카이브 구축방식과는 달리, 예산과 전문 인력이 부족한 민간 아카이브 또는 일반 개인의 디지털 아카이브 구축을 위한 공개 소프트웨어의 활용 가능성을 조사하고자 하였다. 이를 위해 공개 소프트웨어 세 가지 AtoM, ArchivesSpace, Omeka를 제안하고, 공개 소프트웨어에 대한 경험이 없는 구축자와 이용자를 대상으로 사용성 평가를 실시하였다. 평가결과, AtoM은 기록관리시스템과 서비스를 제공하기 위해 개발된 시스템으로 구축자와 이용자 모두 만족도가 높게 나타났으나, ArchivesSpace는 기록물 입력 필수 항목이 많고, 이미지 객체가 검색 화면에 제공되지 않는 등 구축자와 이용자 모두 불편하다고 응답하였다. Omeka는 아이템 레벨만 간단히 입력하여도 아카이브 구축이 가능하여 구축자 만족도는 높게 나타났으나, 검색 서비스를 고려하지 않은 전시 기능 중심 시스템으로 이용자 만족도는 낮게 나타났다. 이러한 평가 결과를 기반으로 소규모 기관이나 일반 개인이 공개 소프트웨어를 선정하고자 할 때 고려해야 하는 선정 기준을 목적, 라이선스, 구축 환경, 기능, 메타데이터, 상호운용성 등의 항목으로 제안하였다.

• ETRI Journal
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• 제26권3호
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• pp.241-251
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• 2004

We propose two improved scalar multiplication methods on elliptic curves over $F_{{q}^{n}}$ $q= 2^{m}$ using Frobenius expansion. The scalar multiplication of elliptic curves defined over subfield $F_q$ can be sped up by Frobenius expansion. Previous methods are restricted to the case of a small m. However, when m is small, it is hard to find curves having good cryptographic properties. Our methods are suitable for curves defined over medium-sized fields, that is, $10{\leq}m{\leq}20$. These methods are variants of the conventional multiple-base binary (MBB) method combined with the window method. One of our methods is for a polynomial basis representation with software implementation, and the other is for a normal basis representation with hardware implementation. Our software experiment shows that it is about 10% faster than the MBB method, which also uses Frobenius expansion, and about 20% faster than the Montgomery method, which is the fastest general method in polynomial basis implementation.

• 한국안전학회지
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• 제14권2호
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• pp.170-177
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• 1999

In these days, large construction companies computerize safety management function and use softwares but small and medium ones do not have any or little in Korea, although it is much mote necessary for the latter having high accident ratios than for the former to make efforts to develop computerized safety management tools. That is, a reason why no safety management program has been developed and construction accident are required to be reduced outstandingly, computerized safety management systems are much needed to be developed. Thus, safety management software named SAFETY PLUS has been developed in this research that has 4 management scopes classified by the size of construction project. The utilization of SAFETY PLUS will be able to increase both effectiveness and efficiency of safety management efforts and result in drastic decrease of construction accidents.

• Industrial Engineering and Management Systems
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• 제14권1호
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• pp.11-21
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• 2015

The purpose of this research is to develop algorithms using the Differential Evolution Algorithm (DE) to solve a multi-objective, sources and stages location-allocation problem. The development process starts from the design of a standard DE, then modifies the recombination process of the DE in order improve the efficiency of the standard DE. The modified algorithm is called modified DE. The proposed algorithms have been tested with one real case study (large size problem) and 2 randomly selected data sets (small and medium size problems). The computational results show that the modified DE gives better solutions and uses less computational time than the standard DE. The proposed heuristics can find solutions 0 to 3.56% different from the optimal solution in small test instances, while differences are 1.4-3.5% higher than that of the lower bound generated by optimization software in medium and large test instances, while using more than 99% less computational time than the optimization software.

• 한국산학기술학회논문지
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• 제9권4호
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• pp.1006-1011
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• 2008

본 논문은 서비스로서의 플랫폼 기술을 활용하여 대규모 온라인 게임 서버를 설계하고 구현하고자 한다. 중소 규모의 게임 개발사가 기존의 방법으로 게임을 개발하여 대규모 사용자를 위한 시스템을 구축하기에는 여러 가지 한계가 많이 있다 본 논문에서는 중소규모의 게임 개발자들이 필요한 플랫폼 자원만큼만 빌려 쓰는 개념을 통하여 효율적인 비용으로 대규모 게임 서버 구축이 가능한 방법을 소개한다. 본 논문에서 제안한 시스템을 통하여 중소 규모의 사업자는 자신이 개발한 게임을 저렴한 비용으로 시장에 출시하여 수익을 창출하는데 활용할 수 있다.

• 한국학교수학회논문집
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• 제5권1호
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• pp.13-19
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• 2002

In this experiment we emphasized the cooperative small group learning and the members of my group worked together to succeed and communicate their mathematics ideas freely. The researcher(teacher) became an observer and facilitator of small group interaction, paying attention to the ongoing learning process, Sometimes the researcher suggested some investigation approach(or discovery)being written by computer software or papers. In this experiment we provided 6 activities as follows : (1) changing the conditions in given problem. (2) operating the meaningful heuristics with the problem sets. (3) creating the problem situations related to understanding (4) creating the Modeling situations. (5) creating the problem related to combinatorial thinking in real world. (6) posing some real problem from real world. we could observed several conjectures First, Attitude and chility to interpret the problem setting is highly important to pose the problem effectively. Second, Generating the understanding can be a great tool to pose the problem effectively. Third, Sometimes inquiry approach represented by software or programmed book could be some motivation to enhance the posing activities. Forth, The various posing activities relate to one concept could give the students some opportunity to be adaptable and flexible in the their approach to unfamiliar problem sets.

• 한국소음진동공학회:학술대회논문집
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• 한국소음진동공학회 2003년도 춘계학술대회논문집
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• pp.797-801
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• 2003

The Statistical Energy Analysis is based on the power flow and the energy conservation between sub-systems, which enable the prediction of acoustic and structural vibration behavior in mid-high frequency ranges. This paper discusses the identification of SEA coupling loss factor parameters from experimental measurements of small reverberation chamber sound pressure levels and structural accelerations. As structural subsystems, steel plates with and without damping treatment are considered. Calculated CLFs were verified by both transmission loss values for air-borne CLF case and running SEA commercial software As a result, CLFs have shown a good agreement with those computed by software. Acoustical behavior of air-borne noise and structure-borne noise has been examined. which shows reasonable results, too.