• 정보관리연구
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• 제37권4호
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• pp.1-23
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• 2006

본 연구의 목적은 국내 사립대학도서관 자동화 발전과정을 다각적인 측면에서 분석하고 체계적으로 기술함으로써 도서관자동화 분야의 역사를 정립하고, 발전과정에서 나타난 문제점을 분석하는 데 있다. 연구방법은 문헌조사와 대학 홈페이지 방문조사, 전화인터뷰를 병용하였다. 대학도서관 발전과정을 선행연구자들의 사례와 대학도서관 자동화 현황 분석을 통하여 핵심이 되는 특징을 도출하여 '도입기', '성장기', '안정기', '도약기'로 구분하였다. 이를 위해 일차적으로 대학도서관 자동화 현황 분석을 문헌조사로 하였으며 자료분석의 표본은 국내 사립대학 109개 도서관을 대상으로 하였다.

• 한국항해항만학회지
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• 제44권2호
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• pp.65-72
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• 2020

Mankind has been using ships for more than 5,000 years and has developed a range of related technologies. However, despite such a long history, compared to aircraft with a history of approximately one century, the pace of progress has been markedly slow. Even though technological progress of ships or the installation of various navigation equipment have been achieved, seaborne collisions have occurred quite frequently. This study analyzed the TCAS( Traffic Collision Avoidance System) that has contributed to the prevention of collisions with other transport methods including aircraft to suggest a collision avoidance system that can be deployed for ships. To apply the technologies applied to aircraft that move in 3D to ships that move in 2D, the difference in the operational environment between the two modes was analyzed to identify elements that need to be applied to ships. The suggested display of data on the collision prevention system is one that manipulates the augmented reality display device used in automobiles that over the past few years has undergone rapid development. Based on the presentation of technological elements that need to be considered when adopting the SCAS or the Seaborne Collision Avoidance System as suggested in this study, the authors hope to contribute to the prevention of collisions.

• 식품과학과 산업
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• 제53권4호
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• pp.397-409
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• 2020

Coffee, which has spread from Ethiopia to Arabia, Europe and then to Korea, has become the most beloved beverage among today's Korean people. After liberation, instant coffee was first introduced to Korea through the U.S. military, and coffee became popular in earnest. In the 1970s, Dongsuh Foods led localization of coffee by mass-producing instant and regular coffee, and in the 1990s, coffee shops replaced teahouses. After the 1997 financial crisis, office workers made coffee on their own as companies downsized on secretarial staff, leading to a further growth in instant coffee mix market. In 1999, the first foreign brand Starbucks was introduced to Korea and the culture of takeout espresso coffee took off. As consumers' preferences of coffee constantly evolve, the demand for high-quality specialty coffee has emerged, individual roasters have grown in order to meet the demand, and a viral marketing through SNS has been used as a growth engine. In 2020, the spread of coronavirus(COVID-19) is affecting the global coffee market. As many offices, coffee shops, and restaurants practice social distancing, out-of-home sales such as coffee shops have decreased, whereas sales for a takeout coffee and home-café products have increased.

• Wind and Structures
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• 제37권3호
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• pp.191-209
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• 2023

This work investigates the subcritical free-shear prism wake at Re=22,000 by the Koopman analysis using the Dynamic Mode Decomposition (DMD) algorithm. The Koopman model linearized nonlinearities in the stochastic, homogeneous anisotropic turbulent wake, generating temporally orthogonal eigen tuples that carry meaningful, coherent structures. Phenomenological analysis of dominant modes revealed their physical interpretations: Mode 1 renders the mean-field dynamics, Modes 2 describes the roll-up of the Strouhal vortex, Mode 3 describes the Bloor-Gerrard vortex resulting from the Kelvin-Helmholtz instability inside shear layers, its superposition onto the Strouhal vortex, and the concurrent flow entrainment, Modes 6 and 10 describe the low-frequency shedding of turbulent separation bubbles (TSBs) and turbulence production, respectively, which contribute to the beating phenomenon in the lift time history and the flapping motion of shear layers, Modes 4, 5, 7, 8, and 9 are the relatively trivial harmonic excitations. This work demonstrates the Koopman analysis' ability to provide insights into free-shear flows. Its success in subcritical turbulence also serves as an excellent reference for applications in other nonlinear, stochastic systems.

• 대한방사선기술학회지:방사선기술과학
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• 제25권2호
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• pp.57-64
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• 2002

의료영상의 접근 용이성에 관한 대한 평가는 과거 영상의 조회 시 장기 저장장소에 있는 영상은 요청에 의해 기다렸으나, 쉽게 접근하여 자유롭게 조회 할 수 있다는 평가를 받았다. 임상적 유용성의 가치는 진료나 판독의 경우 더 많은 정보를 짧은 시간 내에 쉽게 제공받을 수 있고, 타과의 검사결과나, 진행상태, 검사주기를 파악하기에 편리하다는 평가였다. 외래 진료 시 편리성은 짧은 시간 내에 많은 환자를 대하는 진료환경에서 환자에게 제공해야 할 데이터의 긴 대기시간으로 충분히 설명하지 못하는 문제점을 해결하여, 환자와 같이 환자 본인의 의료영상을 조회하는 우수성을 인정했다. 영상관리의 용이성은 환자 개인 디지털 의료영상을 하나로 시간을 기준으로 통합 관리 할 수 있는 평가를 받았으며, 이는 과거 환자 개인의 Film 봉투와 같은 역할을 할 것이라는 결론을 얻었다. 또한 협진과 컨설팅에 있어서도 타 과의 도움을 받는데 큰 도움이 되리라는 평가이다. 마지막으로 전반적인 MIH의 선호도에 있어서도 타 프로그램과의 호환성과 조회시간 단축에 있어서 선호도를 나타내었다. 환자 개인의 의료영상을 시간별, 기간별로 나누어 조회가 가능하며, 환자의 검사 주기를 쉽게 볼 수 있어 진료에 도움이 될 것으로 사료된다.

• 한국막학회:학술대회논문집
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• 한국막학회 1999년도 The 7th Summer Workshop of the Membrane Society of Korea
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• pp.3-7
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• 1999

Government efforts on membrane technology started in early 1980 with Membrane Development Program supported by the Ministry of Science and Technology. Several independent research projects on liquid separation, gas separation, hollow fiber producing program etc. were carried out during the 1980s. The RaCER was commissioned by MOCI for the general management of the project which had its aims in establishing the base for developing membranes, modules and systems for liquid separation in August 1993. More recently, in June 1995, a program for developing membranes for oxygen separation, nitrogen separation and hydrogen separation was initiated. This paper outlines the brief history of membrane technology development in Korea from the introduction of membrane filtration technology during the late 1960s to present.

• 한국잡초학회지
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• 제31권4호
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• pp.394-400
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• 2011

중국에서 발상되어 우리나라에서 일반화하였던 고대 농법 혼파는 재해대책의 하나로서 최소한의 식량곡물을 확보하는 수단이었다. 이들 기술에 대한 역사적 흐름도를 중국농서인 "제민요술"(5세기 전후)와 "왕정농서"(1313)부터 우리나라 고대농서인 "농사직설"(1429)"한정록"(1610) "색경"(1676) "증보산림경제"(1766) "과농소초"(1799) "임원경제지"(1843)로부터 인용 제시하였다. 이들 혼파원리를 응용하는 무비 무농약 벼 이품종 혼파법은 아졸라 투입 무경운 벼 다품종 직산파를 전제로 하여 새로운 생력친환경 농법으로 제시하였다. 아울러 기존 연구결과들을 인용하여 현실적 타당성을 제시하여 평가하였다.

• 한국의사학회지
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• 제35권2호
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• pp.45-67
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• 2022

Currently, there are about 20,000 or so known ancient medical texts from the East Asian medical traditions. Although the most famous texts are widely known, many texts still exist only as original manuscripts. We are interested exploring these texts to uncover the potential benefits of their therapeutic knowledge. This study aims to develop a database program that automatically converts the treatment skills described in the text version into a more structured version. In the previous study, our team analyzed patterns in the way that treatment skills are described and then tried to design a database program algorithm that identified every meaningful keyword used to describe treatment skills and put that word in the right cell of a structured table. This study continues the development of this program. East Asian medical herbal treatment information is broken down into 4 elements: the first one is the name or title of treatment skills, and the second is the symptoms to which the treatment is applied, the third is ingredients used, the fourth is how information is processed and the indications taken. This study presents the algorithm's principles on how to analyze and structure the fourth element, the processing of information and taking of indications, which is described in a form of ancient natural language.

• 우주기술과 응용
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• 제1권1호
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• pp.104-120
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• 2021

Some optical schemes of lenses for spacecraft developed by the author are considered. The main optical characteristics of telescope lenses of various architectures are compared. We propose compact solutions of mirror, lens-mirror, and lens systems with maximum available angular resolutions and other parameters. Examples of calculating the optical systems of lenses used for various tasks both in the field of astronomy and in the field of remote sensing of the Earth and other planets are given. The example of onboard computer system is discussed. Practical recommendations on the development and use of telescope lenses are given.

• Nuclear Engineering and Technology
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• 제53권1호
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• pp.44-60
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• 2021

In this paper, we validate the decay heat calculation capability via a two-step method to analyze spent nuclear fuel (SNF) discharged from pressurized water reactors (PWRs). The calculation method is implemented with a lattice code STREAM and a nodal diffusion code RAST-K. One of the features of this method is the direct consideration of three-dimensional (3D) core simulation conditions with the advantage of a short simulation time. Other features include the prediction of the isotope inventory by Lagrange non-linear interpolation and the use of power history correction factors. The validation is performed with 58 decay heat measurements of 48 fuel assemblies (FAs) discharged from five PWRs operated in Sweden and the United States. These realistic benchmarks cover the discharge burnup range up to 51 GWd/MTU, 23.2 years of cooling time, and spanning an initial uranium enrichment range of 2.100-4.005 wt percent. The SNF analysis capability of STREAM is also employed in the code-to-code comparison. Compared to the measurements, the validation results of the FA calculation with RAST-K are within ±4%, and the pin-wise results are within ±4.3%. This paper successfully demonstrates that the developed decay heat calculation method can perform SNF back-end cycle analyses.