• 기술혁신학회지
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• 제8권1호
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• pp.1-28
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• 2005

Local large corporations paid more attention of technology purchasing than technology marketing because their value captured through implementing the purchased technology to their production. Local large corporations were reluctant to technology marketing so far because earing potential was limited and the risk factors were high. But local large corporations already have significant technology stocks including lots of patents and keeping technology stocks cause financial burden. Therefore, it is time to rethink technology marketing as a method of enhancing utilization of local large corporations' technology stocks. This study suggests what local large corporations should consider to prepare successful technology marketing.

• 전기학회논문지
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• 제58권8호
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• pp.1479-1484
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• 2009

The introduction of the large transformer due to the large power demand has increased the fault current in power distribution system. The increased fault current can exceed the cut-off ratings of the circuit breaker. As the methods to solve this problem, the superconducting fault current limiter(SFCL) has been notified. However, the limited fault current by SFCL affects the operational characteristics of the protective device such as overcurrent relay. Therefore, the selection of the proper impedance for the SFCL is required to keep overcurrent relay's protective coordination with the SFCL when a large transformer is introduced into the distribution system. In this paper, the SFCL's impedance for protective coordination was investigates in that a large transformer is introduced.

• 대한수학회지
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• 제53권1호
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• pp.45-55
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• 2016

Let {$X_n,n{\geq}1$} be a sequence of negatively superadditive dependent random variables. In the paper, we study the strong law of large numbers for general weighted sums ${\frac{1}{g(n)}}{\sum_{i=1}^{n}}{\frac{X_i}{h(i)}}$ of negatively superadditive dependent random variables with non-identical distribution. Some sufficient conditions for the strong law of large numbers are provided. As applications, the Kolmogorov strong law of large numbers and Marcinkiewicz-Zygmund strong law of large numbers for negatively superadditive dependent random variables are obtained. Our results generalize the corresponding ones for independent random variables and negatively associated random variables.

• 천문학논총
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• 제13권1호
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• pp.209-223
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• 1998

We have investigated future large telescopes, which should represent the next generation of Korean optical and infrared telescopes. We first studied the history of the development of large telescopes in the USA, European countries, and Japan. Based on these studies, we came up suitable Korean large telescopes, which fit the current status of Korea in terms of financial situation, required technology, sciences, and manpower. We presented the potential impacts of developing large telescopes on the relevant Korean industry and Korean astronomical society. We also discussed a possibility to install large Korean telescopes at foreign sites utilizing highly competitive seeings and twice available observing dates there.

• 한국지반공학회:학술대회논문집
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• 한국지반공학회 2000년도 가을 학술발표회 논문집
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• pp.353-360
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• 2000

We developed large diameter sampler (we called KICT type large diameter sampler) to obtain undisturbed clay and sand samples. In-situ test carried out in the In-Chon international airport and Kim-Hae. Also we obtained undisturbed sample with a hydraulic piston sampler in the nearly site and carried out unconfined compression test, consolidation test and triaxial test. The result, unconfined compression strength, secant modules, preconsolidation pressure and undrained shear strength of samples to obtain KICT type large diameter sampler are larger than that of samples to obtain hydraulic piston sampler. But failure strains and volume changes at the consolidation of samples to obtain KICT type large diameter sampler are smaller than that of samples to obtain hydraulic piston sampler

• 한국HCI학회:학술대회논문집
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• 한국HCI학회 2007년도 학술대회 2부
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• pp.375-380
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• 2007

맥락 정보와 맥락 인식 시스템에 대한 연구는 지난 10 여 년 동안 유비쿼터스 컴퓨팅 분야에서 중요한 이슈로 다루어졌다. 대부분의 맥락 인식 시스템은 위치 정보와 같이 단일 형태의 맥락 정보를 위해서 설계되었거나 연구실 수준의 크기로 제한되었다. 그러나 많은 종류의 센서와 actuator 를 포함하고 다수의 관리 도메인으로 확장 가능한 스케일이 큰 시스템에 대한 개발 및 평가는 여전히 미흡한 수준이다. 특히, 맥락 퓨전과 추론 구조를 가지는 Large-scale 의 맥락 인식 시스템에 대한 평가 방법이 필요한 실정이다. 본 논문에서는 휴리스틱 평가를 이용한 Large-scale 맥락 인식 시스템의 평가 방법에 대하여 제안한다. 그리고 우리는 동적인 맥락 인식 시스템을 지원하고 맥락 퓨전 및 추론을 위한 메커니즘을 포함하는 기본 구조에 대해서 자세히 설명한다. 맥락 인식 시스템 평가를 위해서 제안된 접근법은 사용자 인터페이스 도메인에서 잘 알려진 전문가에 의한 평가 방법으로 Large-scale 맥락 인식 시스템에 적합하도록 특별히 선택된 heuristics 집합을 이용하는 휴리스틱 평가(Heuristic Evaluation)이다.

• 대한설비공학회:학술대회논문집
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• 대한설비공학회 2009년도 하계학술발표대회 논문집
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• pp.527-532
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• 2009

Recently, the size of Large Space has been gradually enlarged, according to the development of technology, and because they're used not only for indoor events, but also for various outdoor sports, for example, baseball or soccer. Therefore, there are more demands for developing indoor environment control technology to establish indoor thermal-environment which is proper for different events held in Large Space. This study aims at offering some basic data which can be referred to as the construction guide for the full-scaled construction of Large Space in Korea by arranging the matters to be attended to in designing, and controlling technologies for efficient Large Space design.

• 한국정밀공학회지
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• 제28권3호
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• pp.315-322
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• 2011

High-accuracy micropatterns such as V-shaped microgrooves are increasingly in demand for various engineering areas. And the technical trend goes for large surface areas in precision machining technology. So micropatterns with large surface areas are expected to play an increasingly important role in today's manufacturing technology In this study, we focused on developing machining technologies. First, a machine vision system for precise tool setting is developed. Second, an on-machine measurement (OMM) system for large-area measurement is implemented. And also software for tool path generation and simulation is developed. With these technologies we fabricated large-surface micropatterns in an electroless nickel-plated workpiece with single-crystal diamond tools and a 32-in, $675mm{\times}450mm$ mold with tens of V-and pyramid-shaped micropatterns.

• 한국소성가공학회:학술대회논문집
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• 한국소성가공학회 1995년도 제2회 단조심포지엄 단조기술의 진보
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• pp.135-144
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• 1995

Cold Forging has advantage in high accuracy and short working time. However large-skzed and complicated parts are difficult to process with cold forging. Thus large-sized and complicated parts have been processed with two pieces, or combind forging that is hot forging in addition to cold sizing. Recently, large-sized and complicated parts can be manufactured with cold forging alone by advanced cold forging technology using the long-stroke press. In this paper, cold forging technology of large-sized and complicated parts are investigated, including tripod slide housing for constant velocity joint and drive shaft for starter.

• Journal of the Korean Data and Information Science Society
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• 제28권6호
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• pp.1565-1571
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• 2017

The standard logistic map is an iterative function, which forms a discrete-time dynamic system. The chaotic logistic map is a kind of ergodic map defined over the unit interval. In this paper we study the limiting behaviors on the several processes induced by the chaotic logistic map. We derive the law of large numbers for the process induced by the chaotic logistic map. We also derive the uniform law of large numbers for this process. When deriving the uniform law of large numbers, we study the role of bracketing of the indexed class of functions associated with the process. Then we apply the idea of DeHardt (1971) associated with the bracketing method to the process induced by the logistic map. We finally illustrate an application to Monte Carlo integration.