• Journal of the Korea Institute of Military Science and Technology
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• 제4권1호
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• pp.177-187
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• 2001

It is important to test and evaluate the variation degree of ship-mounted antenna radiated power with respect to all directions in order to use more effectively antennas that installed on naval ships. The naval ship has various sensors for navigation, communication and electronic warfare, etc. And the performance of these sensors extremely depends on the various characteristics of antenna system to transmit and receive electromagnetic wave. The radiated power pattern of the antenna differs from all aspect angles of the ship because of complex superstructures. It is important to know the weak point(direction) of antenna radiation for appropriate operation. Therefore, the ARP(Antenna Radiation Pattern) of shipboard antennas is measured for the all aspect angles. The results of ARP measurement are utilized as reference for antenna arrangement of newly-built same class warship. This study also describes the development results for the ARP measurement technique, software design and test procedures to measure the radiation pattern of communication equipment antennas using the fixed test site.

• The Transactions of The Korean Institute of Electrical Engineers
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• 제59권7호
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• pp.1340-1345
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• 2010

FRC(Frame Rate Control) has been applied to the monitor and TV product as part of cost-saving in many flat panel display manufacturers. As FRC can represent the same number of gray scale level with bits of a smaller amount than bits of the input image data, it is widely used. However, FRC causes visual artifacts by using repeatedly pre-designed the FRC unit size of block pattern in display devices. Therefore, this paper analyzes the cause of the visual artifacts. And in order to improve them, it proposed the pattern arrangement of FRC unit blocks through frame rolling method as analytic solution for the first time. So, we could embody causes of FRC noise. Using the proposed structure, more robust pattern to FRC noise will be designed.

• Journal of the Architectural Institute of Korea Planning & Design
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• 제34권7호
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• pp.107-118
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• 2018

Taegeuk is Korea's flagship pattern, which has been handed down over centuries. During the Joseon era, it had an influence on all places such as the left side of the building and arrangement. In addition, Taegeuk was a bowl which contains the philosophy of right now. In Neo-Confucianism, it was understood that yin and yang were divided into five elements and created the universe. In buildings, Taegeuk was mostly used as decoration on the stylobate and doors. Taegeuk contains the fundamental thoughts about the creation of the universe. In architecture, it plays the role of a bridge between spaces. In ancient times, it was used as byeoksa. Entering the Joseon era, it played a role as a border. In the late Joseon dynasty, it was important in protecting the country. A Taegeuk pattern varies in diverse shapes to represent its dynamic aspects. After passing through many different stages, it developed into the pattern of today.

• The Transactions of the Korean Institute of Electrical Engineers D
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• 제53권2호
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• pp.103-110
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• 2004

This paper proposes a new method on the EMG AR(autoregressive) modeling in pattern recognition for various head motions. The proper electrode placement in applying AR or cepstral coefficients for EMG signature discrimination is investigated. EMG signals are measured for different 10 motions with two electrode arrangements simultaneously. Electrode pairs are located separately on dominant muscles(S-type arrangement), because the bandwidth of signals obtained from S-type placement is wider than that from C-type(closely in the region between muscles). From the result of EMG pattern recognition test, the proposed mIAR(modified integrated mean autoregressive model) technique improves the recognitions rate around 17-21％ compared with other the AR and cepstral methods.

• Fashion & Textile Research Journal
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• 제2권3호
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• pp.198-204
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• 2000

This study aimed to analyze the characteristics of domestic textile designs for miss and madam apparel and to find out the trend sensibility felt by young female judge according to the product year and apparel target age. Textile designs of 170 pictures of 1999 and 1994-1995 were collected at 4 shopping malls and from consumers, and results are as follows; As the sources of textile design were 'nature', 'imagination', and 'combination' used in the order of frequence, but the sources appeared more diverse in 1999 than in 1994-1995. The interpretation techniques expressed most often were 'stylized', 'geometry', and the mast frequent arrangements were 'all over', and the second was '4-way' in 19941995, '2-way' in 1999, that is, the arrangement were different according to product year. The trend sensibility were varying to the target age and product year.1999 apparel products were felt more 'sophisticated', 'contemporary', and 'sporty' if they were the textile designs for miss, while 1994-1995 products were more 'sophisticated', 'contemparary', and 'sporty' if for madam.

• Animal Systematics, Evolution and Diversity
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• 제29권1호
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• pp.23-30
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• 2013

This study reports the discovery of two oxytrichid ciliates, Cyrtohymena primicirrata (Berger and Foissner, 1987) and Oxytricha granulifera Foissner and Adam, 1983, in Jeju Island, Korea. The morphology of the two species was studied using live observation and protargol impregnation. These species are described as follows: Cyrtohymena primicirrata has a body size in live specimens $90-140{\times}40-60{\mu}m$, length : width ratio 2.3 : 1 on average; elongated and slender obovate in outline of body. Cortical granules are shiny yellow on the ventral and dorsal side. Adoral zone of membranelles (AZM) is covering about 48% of the cell with about 38 adoral membranelles. Arrangement of undulating membranes is ordinary Cyrtohymena pattern. Dorsal kineties is six rows with $5{\mu}m$ long bristles. Oxytricha granulifera has a body size in live specimens $90-115{\times}25-38{\mu}m$, length : width ratio 3.31 on average; elongated ellipsoidal in outline of body. Cortical granules are colorless on the ventral and dorsal side. AZM is covering 28% of the cell length in vivo with about 24 adoral membranelles. Arrangement of undulating membranes is Oxytricha pattern. Dorsal kineties is five rows with about $3{\mu}m$ long dorsal bristles.

• Journal of architectural history
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• 제27권6호
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• pp.7-18
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• 2018

The purpose of this paper is to analyze the double stylobate of the three-story stone pagoda in Yeongnam region and to divide the types of arrangements of the body-stone and roof-stone and find their correlation. Research objects are 47 three-story stone pagodas in Yeongnam region which have accurate documents and plans. After dividing a double stylobate of three-story stone pagodas into a lower and upper stylobate, we classified each stylobate into a type of body-stone and roof-stone from an architectural point of view. Types of arrangement of body-stones are divided into methods of using the 'ㅡ' shaped stone and methods of using 'ㄱ' shaped stone in the corner. And types of arrangement of roof-stones are divided into methods of arranging stones in a row or in a grid pattern. As the size of the pagoda increases, 'ㄱ' shaped stones used for the body-stone and stones for the roof-stone are arranged in a grid pattern. As the size of the pagoda becomes smaller, the body-stone is consist of 'ㅡ' shaped stone, and the roof-stone is arranged in a row. As the construction year of the pagoda becomes later, the size of the pagoda becomes smaller and types of body-stone and roof-stone had been stereotyped. As a result, the size of the stone pagoda became smaller as constructed later, and the type of body-stone and roof-stone of the double stylobate appear differently according to the size of the pagoda.

• KSCE Journal of Civil and Environmental Engineering Research
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• 제34권2호
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• pp.447-455
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• 2014

This study was intended to estimate the efficiency of inducing fiber arrangement in UHPCC (Ultra High Performance Cementitious Composites). For the purpose, UHPCC members produced by several different placing methods according to flow characteristics were prepared; flexural behaviors were compared and correlation between the flexural behavior and the characteristics of fiber arrangement was investigated. Test results showed that placing method for inducing specific fiber arrangement had a considerable influence on the flexural performance. The standard specimen in which fibers are induced to be directed parallel to the principle tensile direction presented higher flexural tensile strength but lower variation. Therefore it should be considered that the flexural tensile strength actually developed in UHPCC member may be highly different and in lager variation. The qualitative variation of fiber arrangement according to the flow of UHPCC was also predicted considering the flow pattern and the boundary effect; the prediction provided good explanation to the difference in the flexural behavior according to the induced flow.

• Journal of the Korea Academia-Industrial cooperation Society
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• 제16권12호
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• pp.8760-8766
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• 2015

In this paper a technology which gives directions to people and also localization of the robotic vacuum cleaners inside some spacious buildings is developed. For this purpose, it is confirmed that which pattern has a small error in dealing with the indoor localization with various RFID tag arrangements attached on the ground. This experiment was conducted by using MT92(900MHz range Antenna) and ALR 9900+(Reader). As a result, the square arrangement has the least error, 21.19cm, among other patterns which are diamond, rectangle and regular hexagon. However, it is necessary to consider the number of tags in the unit area, from this point of view the regular hexagon arrangement is the most efficient arrangement among other patterns because it needs only 6 tags in the unit area.

• 한국HCI학회:학술대회논문집
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• 한국HCI학회 2006년도 학술대회 1부
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• pp.161-168
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• 2006

본 연구는 공간적 정보의 청각적 제시 가능성을 확인하기 위해 머리전달함수(head-related transfer function: HRTF)를 통해 생성된 3D 사운드를 가상공간상 대상 위치의 직각형태(orthogonal pattern), 혹은 대각형태(diagonal pattern)의 조합으로 배열하여 투시장치(See-Through HMD)로 증강현실을 경험하고 있는 사용자 과제수행의 정확성을 측정하였다. 본 연구에서 실시한 실험들의 결과를 종합하면, 3D 사운드로 대상의 위치 정보를 제시할 때는 사용자로부터의 방향은 직각으로 위치시키는 정보 배열이 정확성을 확보할 수 있고, 또한 가상적 깊이를 이용하여 정보를 배열하는 것도 그 깊이를 구분할 수 있으나 정확성이 떨어짐을 확인하였다. 특히 보다 현실적인 과제 상황에서의 수행을 비교하기 위해 일차과제(primary task)를 하는 동안 제시된 청각자극 조건에서 이런 정확성의 차이가 마찬가지로 나타났다. 이런 결과를 통해 3D 사운드로 대상의 위치와 같은 공간적 정보를 제시 가능한 최적의 배열 형태를 제안하는데, 이는 어떤 패턴으로 정보를 구조화하여 제시하느냐에 따라 청각적 위치 정보 제시의 성공 여부가 결정된다는 것을 의미한다.