• 한국군사과학기술학회지
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• 제25권2호
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• pp.117-124
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• 2022

Single-ring circular array antennas can be applied to direction finding systems in order to use nose-section in other purposes, and the interferometry is a proper direction finding method to those systems. We usually make the interferometer baseline long enough to achieve good angular accuracy. However, an interferometer with baseline longer than a half-wavelength has the ambiguity problem. In this paper, we present a novel method for solving the ambiguity problem in interferometry systems. This technique is based on the amplitude comparison method and the space division table, and it can place a target within the angular region in which the ambiguity problem does not occur by roughly estimating direction-of-arrival. The Monte Carlo simulation results show that proposed method can effectively remove the ambiguity problem in the system.

• 한국인쇄학회지
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• 제25권1호
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• pp.121-133
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• 2007

The CMS(color management system) software was to enable consistent color reproduction from original to reproduction. The CMS was to create RGB monitor and printer characterization profiles and then use the profiles for device independent color transformation. The implemented CMM(color management module) used the CIELAB color space for the profile connection. Various monitor characterization model was evaluated for proper color transformation. To construct output device profile, SLI(sequential linear interpolation) method was used for the color conversion from CMYK device color to device independent CIELAB color space and tetrahedral interpolation method was used for backward transformation. UCR(under color removal) based black generation algorithm was used to construct CIELAB to CMYK LUT(lookup table). When transforming the CIE Lab colour space to CMYK, it was possible to involve the gray revision method regularized in the brightness into colour transformation process and optimize the colour transformation by black generation method based on UCR technique. For soft copy colour proofing, evaluating several monitor specialism methods showed that LUT algorithm was useful. And it was possible to simplify colour gamut mapping by constructing both the look-up table and the colour gamut mapping algorithm to a reference table.

• 한국정보디스플레이학회:학술대회논문집
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• 한국정보디스플레이학회 2005년도 International Meeting on Information Displayvol.I
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• pp.276-279
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• 2005

The proposed Novel OverDriving Technology with Optimum Look-up-Table（LUT）is suggested to be a better solution to reducing the occurrence of overshooting caused by the traditional overdriving method implemented to normally liquid crystal (VA mode). Chunghwa Picture Tubes, LTD. (CPT) has successfully implement this tech into 20 inch TFTLCD TV module at the present day. The proposed technology can speed up gray-to-gray response time of LCD less than one half of frame time. On the side, Optimum LUT construction apply the compression scheme to record total actual grayscale transfer characteristics instead of applying the normal spread method such as linear / non-linear interpolation. The memory space is been reduced and the distortion of the image quality is lesser.

• 한국가구학회지
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• 제21권1호
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• pp.1-16
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• 2010

Furniture is a medium to interconnect the living space to human, and it is the closest environmental element that limits the functions of the space, defines the style of the living, and adjusts the actions and behaviors of human. Therefore the furniture can be said to be one of the craft arts that reflects the culture and living style as they are according to the periodical, regional, and social stratum characteristics. Within this context, this study tries to suggest new design and living culture that can harmonize with the modern residence living culture and incorporate the traditional varnishing technique with lacquer that had been discontinued. Coming to the modern days, the varnishing with lacquer is getting attention again with its environment friendly characteristics and antibiotic functions, and is being applied to various applications. To inherit and maintain such an excellent traditional culture, I would like to improve the practicality by applying to modern furniture, and to contribute to develop and tell the world about the superiority of our culture.

• 천문학회지
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• 제56권2호
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• pp.213-224
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• 2023

Type II solar radio bursts show frequency drifts from high to low over time. They have been known as a signature of coronal shock associated with Coronal Mass Ejections (CMEs) and/or flares, which cause an abrupt change in the space environment near the Earth (space weather). Therefore, early detection of type II bursts is important for forecasting of space weather. In this study, we develop a deep-learning (DL) model for the automatic detection of type II bursts. For this purpose, we adopted a 1-D Convolution Neutral Network (CNN) as it is well-suited for processing spatiotemporal information within the applied data set. We utilized a total of 286 radio burst spectrum images obtained by Hiraiso Radio Spectrograph (HiRAS) from 1991 and 2012, along with 231 spectrum images without the bursts from 2009 to 2015, to recognizes type II bursts. The burst types were labeled manually according to their spectra features in an answer table. Subsequently, we applied the 1-D CNN technique to the spectrum images using two filter windows with different size along time axis. To develop the DL model, we randomly selected 412 spectrum images (80%) for training and validation. The train history shows that both train and validation losses drop rapidly, while train and validation accuracies increased within approximately 100 epoches. For evaluation of the model's performance, we used 105 test images (20%) and employed a contingence table. It is found that false alarm ratio (FAR) and critical success index (CSI) were 0.14 and 0.83, respectively. Furthermore, we confirmed above result by adopting five-fold cross-validation method, in which we re-sampled five groups randomly. The estimated mean FAR and CSI of the five groups were 0.05 and 0.87, respectively. For experimental purposes, we applied our proposed model to 85 HiRAS type II radio bursts listed in the NGDC catalogue from 2009 to 2016 and 184 quiet (no bursts) spectrum images before and after the type II bursts. As a result, our model successfully detected 79 events (93%) of type II events. This results demonstrates, for the first time, that the 1-D CNN algorithm is useful for detecting type II bursts.

• 한국실내디자인학회논문집
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• 제38호
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• pp.3-13
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• 2003

Now that 15 years have passed since its introduction to 4 year college in Korea and we have 51 majors in the field of Intoner design established at 47 universities as of 2003, we are in the position to seek the improvement of its educational qualify. With a view to provide data for the setup of proper educational purpose, it has classified their divisions(departments) according to their major names and belonged colleges of the universities and considered their geographical distributions, groupings of curriculum, their framing and features of a standard curriculum. 1)Divisions of the universities where the major of interior design belongs are divided into three categories of design division (design 8t arts, arts), home economics division (home economics, natural science) and architectural division. For the development of the major, universities to which circumstances permit are recommended to establish an independent college of interior design following the . cases in the US. 2) Geographical preponderance of interior design major on Seoul and Gyeongsang Province is desired to be improved. 3) Curriculum of interior design, which is classified into introduction, history of interior design, theory of interior design, design of interior space, digital technology, design elements of inner space, technology of interior design, behavior of environmental psychology, design management and other subjects, was made into a table by divisions. To sum up, curriculum of interior design concentrates on basic design theory throughout all divisions. In connection with the selection of division by high school-graduates or their parents, design division is recommended for those who desire to major in design elements and design management, home economics division for those who desire to major in space design and behavior of environmental psychology and architectural division for those who desire to major in Interior space design, interior design technology and regulations. 4) This research can contribute to the settlement of desirable curriculum for the interior design education, thus upgrading the education level of the major in Korea.

• 한국가구학회지
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• 제19권4호
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• pp.260-272
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• 2008

The recent concept of kitchen is likely defined as "Kitchen Culture" including the function of living room where all families make a conversation as well as a dinner, and it is becoming another type of the residential environment, deviating from the stereotype as only cooking area. Particularly the comfortableness of living room is closely associated with a receipt function of kitchen, and the sort & dimension & size of furniture and diversity of shapes playa more meaningful role for improving our life standard & comfortableness compared with the past, nevertheless this receipt study is carelessly handled in the first phase of construction. This Study is focusing on understanding the modern concept of kitchen where the open space concept is being introduced as more reasonable space concept, and on suggesting a solution for receipt-function of the modern kitchen concept connected with "L-D-K (Living room - Dining room- Kitchen)" space idea. In the Chapter 2 the concept of receipt and function of kitchen, the wide variety of kitchen utensils was checked up, and in the Chapter 3 the change of trends of kitchen area & receipt space was considered, and finally in the Chapter 4 the modern concept of kitchen was presented, by instancing overseas examples with receipt planning. As a consequence, the alternative of the receipt in the modern kitchen is to install an Ireland table or another type of receipt-available table (lower furniture) in the dead space between kitchen & living room for motivating smooth communication and convenient receipt, and that is the trend nowadays. Kitchen desires a rapid change. Through this kind of study it should be more researched that kitchen is not an independent space any more and lies in the mutual connection of L-D-K.

• 한국항해항만학회:학술대회논문집
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• 한국항해항만학회 2006년도 추계학술대회 논문집(제1권)
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• pp.387-392
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• 2006

컨테이너 터미널과 같이 다수의 AGV(Automated Guided Vehicle)를 한정된 공간에서 동시에 운용하는 환경에서는 AGV의 작업생산성에 악영향을 주는 충돌, 데드락(deadlock), 라이브락(livelock)이 발생할 확률이 높다. 또한, AGV의 가/감속 운동은 AGV의 주행시간을 예측하기 어렵게 만들기 때문에 AGV 라우팅을 더욱 어렵게 만드는 요인이다 . 본 연구에서는 AGV 사이의 충돌, 데드락, 라이브락을 방지하기 위해 점유영역 예약테이블(Occupancy Area Reservation table; OAR table)을 이용하는 방법과 최적주행경로를 선택하기 위해 가감속 운동을 고려하여 AGV의 주행시간을 추정하는 방법을 제안한다. 시간중심 시뮬레이션(time-driven simulation)을 통해 제안방안을 실험한 결과 제안방안의 효과를 확인하였다.

• 한국가구학회지
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• 제20권4호
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• pp.326-338
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• 2009

This study aimed at developing tea furniture with beauty of traditional Korean furniture. As the population which drinks tea increases day by day in the light of LOHAS (Lifestyles of Health and Sustainability) era, the importance of the tea culture has been brought out and the interest of the pieces has increased with the cultural space. But the study is still not only insufficient for Korean tea cultural space, it is but also hard for us to find such pieces as holding the original culture's charm. Thus, after studying concepts and spatial qualities of the tea cultural space based on the traditional culture and after investigating the tea objects including the integral parts, a piece of tea shelf with table which hits the emotion of Korea necessary to tea cultural space was created with solid wood. As a result, if we rediscover and develop the tea pieces with beauty of traditional Korean furniture mentioned as the green furniture, the objects will be standing on tiptoe as contemporary tea pieces conveying the identity of Korea. In addition, they will have a competitiveness across the world pursuing LOHAS beyond well-being.

• 한국콘텐츠학회논문지
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• 제11권9호
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• pp.154-165
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• 2011

본 논문은 공간디자이너의 직무특성에 따라 on-line 기반 아이디어 발상 시스템인 웹스토밍의 활용성이 달라질 것으로 보고 실무 디자이너그룹을 대상으로 요소상관표를 이용한 웹스토밍 활용성 테스트를 실시하여 선행연구인 디자인관리자그룹 활용성 평가결과와 비교분석함으로 공간디자인 프로세스 상에서 직무특성에 따른 웹스토밍 활용방안을 종합하여 제안하고자 하였다. 설문 결과를 관찰-해석-적용의 절차에 따라 분석한 결과 공간디자인 프로세스 요소와 웹스토밍 기능요소 간 요소상관표 분석결과 관리자그룹과 실무자 그룹 양쪽에서 가장 높은 상관성을 나타낸 공간디자인 프로세스는 '계획설계' 단계로 확인되었고 분업화 시점으로 상관성이 저조해지는 것도 동일하게 나타났다. 실무자그룹이 관리자그룹과 확연한 차이를 나타낸 프로세스 부분은 '평가' 단계로 실무자 그룹의 경우 두 번째로 높은 상관성을 나타내었다. 프로젝트 운영과 관련된 부분도 실무자 그룹의 상관성이 높은 것으로 분석되었다. 이에 각 단계에서 웹스토밍에 새롭게 적용할 수 있는 개선안을 도출하고 종합하여 웹스토밍 활용방안을 제시하였다.