• 대한인간공학회지
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• 제32권1호
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• pp.69-75
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• 2013

Objective: This study proposes an alarm display and compares it with the one(alarm tile display) widely used in main control rooms(MCRs) of nuclear power plants. Background: Catching up with the rapid development of computer technologies, advanced MCRs has been required. Using modern technologies of computers and visual displays, we have a lot of potential to improve user performance and satisfaction as well as safety in MCRs. Method: The alarm bar display has been proposed to reduce some potential problems of the alarm tile display in this study. Human factors evaluations were conducted to compare both types of displays. Two interfaces of bar alarm and tile alarm were simulated on the desktop computer for the user-involved experiment. Eight students participated in the experiment with the within-subject design. Results: The alarm bar was slightly better in terms of situation awareness, and preferred to understand alarm dynamics. The alarm tile was slightly or significantly better in other measures. Conclusion: Both alarm displays have their own advantages and disadvantages. Therefore, combining benefits of both displays can be used to optimize the design of alarm displays. Application: The proposed display is expected to compensate the existing displays for certain purposes.

• 한국전자파학회논문지
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• 제21권12호
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• pp.1467-1474
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• 2010

X 대역에서 능동 위상 배열 레이더에 적용할 수 있는 타일형 능동 송수신 모듈을 구현하였다. 제안한 타일형 구조의 구현을 위한 수직 연결은 fuzz button을 이용한 solderless 방식으로 삽입 손실은 0.6 dB, 반사 손실의 VSWR은 1.7 이하를 만족하며 X 대역에서 약 30 %의 대역폭을 가지는 광대역 특성을 가진다. 광대역 특성을 가지는 수직 연결 구조를 이용하면 수직 연결 시에 발생할 수 있는 부정합을 최소한으로 하여 우수한 이득 평탄도를 가지는 타일형 구조의 송수신 모듈을 구현할 수 있다.

• 전기전자학회논문지
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• 제20권1호
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• pp.75-81
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• 2016

본 논문은 SIMT(Single Instruction Multi Thread)구조 GP-GPU(General Purpose Graphic Processing Unit)에서 그래픽 어플리케이션 성능을 향상시키기 위해 타일 기반 그래픽 파이프라인 구조를 제안한다. 타일 기반 그래픽 파이프라인 구조는 병렬적으로 Rasterization 단계를 처리하고, 불필요한 그래픽 처리 연산은 수행하지 않는다. SIMT구조를 통해 대용량 데이터를 병렬로 처리하여 연산 성능을 향상시켰고, 이는 3D 그래픽 파이프라인 처리의 성능을 향상하였다. 제안하는 구조를 통해 3D 그래픽 어플리케이션을 처리할 때 3D 모델을 구성하는 정점 데이터가 많아 질수록 높은 효율을 보인다. 제안하는 구조는 'RAMP'와 기존의 선행 연구를 비교하여 약 1.18배에서 최대 3배까지의 처리 성능 향상을 확인하였다.

• 대한가정학회지
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• 제20권4호
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• pp.113-124
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• 1982

We have investited on the efficiency of the electric vacuum cleaners for household use. On this experiment, we have used the Expired Gas Analyer IHO6(SAN-EI, K.K) to get energy expenditure of house cleaning. The testing items are, (1) The difference of energy expenditure of cleaning for the each types of the test floors: Which are P-tile, Tatami, and 4 kinds of carpets. (2) The energy expenditure of cleaning for the room with a given quantity of furnitures: The volumes of furnitures are 0, 3, 10, 20% of the room with 2 kinds of chair. The results of the experiments are as follows. 1. The energy expenditure of cleaning for the types of test floors: Setting the energy expenditure on the basis of P-tile, Tatami needs 20~24% energy expenditure than P-tile, and carpet needs 60~64% energy expenditure than P-tile. 2. Cleaning time: The more the room has many furnitures, the more it takes longer. The types of vacuum cleaners, the Shoulder-type cleaner needs 1.19 times of the Upright-type, and the Cylender-type needs 1.08 times of the Upright-type. 3. The energy expenditure of cleaning for a given quantity of furnitures: The more the rooms has many furnitures, the more the energy expenditure increase. A 10% (20%) increases in the volume of the furniture causes a 100% (200%) increases in the energy expenditure of vacuum cleaners.

• 한국세라믹학회지
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• 제48권5호
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• pp.404-411
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• 2011

The humidity controlling ceramic materials was developed by applying the phenomena of dew condensation in the capillary. It is said that the humidity range which human feels comfortable is from 40 to 70% in relative humidity. In this study, the ceramic tile using natural soils such as diatomite for interior wall was investigated. In particular, we had introduced novel processing routes for fabricating microcellular ceramics tile using hollow microsphere as a pore former. The microcellular pores in the humidity controlling ceramic materials showed the superior properties such as light-weight, heat insulation. The cell density was ${\sim}1.0{\times}10^9$ cells/$cm^3$ and density of sample was 0.65 g/$cm^3$ in the case of 1.71 wt% hollow microsphere content. Also, it is observed that the BET surface area and the pore volume of the sintered diatomite tile have the values of 40.92 $m^2$/g and 0.173 $cm^3$/g.

• 한국안전학회지
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• 제28권1호
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• pp.18-23
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• 2013

The purpose of this study were to develop and validate a prototype slipmeter used on-site floor. The developed slipmeter was dreg sled type. It measured static coefficient of friction(SCOF). The developed slipmeter was evaluated with ASTM 2508-11 which use four different standard surfaces(polished granite, glazed porcelain, vinyl composite tile, and ceramic tile). The SCOF was then measured with developed slipmeter under the three different contaminants and seven different floors. The test results of slipmeter were also compared with those of BOT-3000, floor surface roughness, and human perception. The test results revealed that developed slipmeter successfully ranked all four standard surfaces and differentiated among standard surfaces with varying degrees of slipperiness. The developed slipmeter couldn't properly measure slipperiness under the two kind of floors(polished tile, ground steel plate) and one kind of contaminant(glycerol). The test results of developed slipmeter had stronger correlation with those of BOT-3000 and floor roughness under the water and detergent solution than under the glycerol. The test results of developed slipmeter also showed stronger correlation with those of BOT-3000 and surface roughness than those of human perception. The newly developed slipmeter had been found to give consistent results under the test conditions except for two kind of floors(polished tile, ground steel plate) and one kind of contaminant(glycerol).

• International Journal of Advanced Culture Technology
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• 제7권2호
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• pp.209-217
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• 2019

Due to the development of artificial intelligence and image recognition technology that play important roles in the field of 4th industry, office automation systems and unmanned automation systems are rapidly spreading in human society. The proposed algorithm first finds the variances of the differences between the tile values constituting the learning characters and the experimental character and then recognizes the experimental character according to the distribution of the three learning characters with the smallest variances. In more detail, for 100 learning data characters and 10 experimental data characters, each character is defined as the number of black pixels belonging to 15 tile areas. For each character constituting the experimental data, the variance of the differences of the tile values of 100 learning data characters is obtained and then arranged in the ascending order. After that, three learning data characters with the minimum variance values are selected, and the final recognition result for the given experimental character is selected according to the distribution of these character types. Moreover, we compare the recognition result with the result made by a neural network of basic structure. It is confirmed that satisfactory recognition results are obtained through the processes that subdivide the learning characters and experiment characters into tile sizes and then select the recognition result using variances.

• 한국건축시공학회:학술대회논문집
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• 한국건축시공학회 2023년도 가을학술발표대회논문집
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• pp.211-212
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• 2023

Polishing tiles among porcelain tiles are more durable and aesthetic than ceramic tiles, so their demand has recently increased. In particular, since polishing tiles have a very low absorption rate, organic adhesives with chemical bonds are mainly used. However, organic adhesives have low economic efficiency and some volatile organic compounds (TVOCs). Therefore purpose of this study was to evaluate the performance of polishing tile adhesion by developing organic-inorganic adhesives, which have chemical bonds and mechanical bonds. As a result, since the amorphous chain and chemical bonds of the polymer in the tile adhesives, both tensile and shear adhesion strength were satisfied with the KS L 1592, KS L 1593, and the rate of length change itself in the thermal cycling was lower than organic adhesives. So it is thought that it is possible to replace some organic adhesives.

• 건축역사연구
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• 제14권2호
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• pp.57-69
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• 2005

A stylobate, part of the foundation for hardening soil below the floor, has been built with a variety of materials, such as stone, tile and brick, in several kinds of combined constructions of soil, stone, and brick. In particular, Baekje used a tile-piled stylobate that could not be found in Goguryeo and Silla counterparts, thus showing outstanding performance in the construction culture. Archeological excavations up to now evidence the stylobate played a role in building the magnificent structures or enhancing the decorative effects. It can be enough inferred that such features are reflected on dual footing stylobate, framed stylobate and tile-piled stylobate. Baekje had delivered its techniques for constructing stylobate to Silla from about the middle of 6th century. They can be traced down back from the dual stylobate that has been identified in Hwangryong-sa temple lastly built in the old site of Silla, those constructed with broken stones at Najeong, tile-piled stylobate of the mode of vertical-horizontal rows which had been established in Inwang-dong, Gyeongju, the capital of the kingdom, and a framed stylobate at Hall enshrining Buddha (Golden Hall) site of Gameun-sa temple site. Recently, relics of structures, including temple sites, are intermittently being unearthed in the old sites of Baekje and Silla. However, studies linking archeology with architecture can be rarely found up to now. It is, therefore, necessary that the relics should be correctly construed in archeological as well as architectural aspects. We expect that further studies can graft architectural insight into archeological analysis.

• 컴퓨터교육학회논문지
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• 제17권1호
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• pp.107-115
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• 2014

본 논문은 다중코어의 성능을 평가하고 분석하기 위해 TILE-Gx36(Gx36) 다중코어 프로세서를 사례로 연구하였다. Gx36의 성능 평가는 비교적 최신 병렬 벤치마크인 PARSEC을 이용하였고, 성능 분석을 돕기 위한 비교 시스템으로 인텔의 Core i7 (i7)과 Atom을 사용하였다. 실험결과 2의 제곱으로 동시에 수행 가능한 스레드를 발생시켰을 때, Gx36은 i7보다 평균 2.73배 낮은 성능을 보였으며, Atom보다는 평균 1.93배 높은 성능을 보였다. Gx36은 비교 프로세서보다 상대적으로 큰 Last-Level Cache(LLC)를 갖고 있음에도 불구하고, 가장 많은 LLC miss를 발생시켰다. 이는 Gx36이 기대치 이하의 성능을 보이는 주된 이유로 판단되며, DDC가 일반적 고성능 컴퓨팅을 위한 캐시구조로 적절하지 않음을 보여준다. 다중코어 시스템의 실측을 통한 성능평가는 향후 다중코어 구조개선 및 올바른 방향 설정을 위한 객관적인 자료를 제공한다.