현대 미술관에서 나타나는 내·외부 공간구성 계획 연구

이길호(Lee, kil-Ho),조경수(Cho, Kyung-Soo) 대한건축학회 2018 대한건축학회 학술발표대회 논문집 Vol.38 No.1

현대 포르투갈 건축의 공간적 톤에 관한 연구

이길호(Lee, Kil-Ho),이정욱(Lee, Jung-Wook) 한국실내디자인학회 2012 한국실내디자인학회논문집 Vol.21 No.6

Modern architecture tends to split the everyday life and the space of human. Position of architecture should be on the relationship between nature and human need. It will be study on the everyday life of architecture from architecture and everyday life of human relationships. Based on this study, it makes clear the visual aspects of architectural experience to acquire spatial tones for analyzing architectural Everyday-ness. In this case, Portugal"s modern architectural space was impressing, because of the construction of local color and architectural vocabulary of the Everyday-ness. Therefore, the Everyday-ness of Architecture by relationship analysis reveals the space of these spatial tones. Spatial characteristics of the Everyday-ness of architecture be analyzed of simplicity, purity, locality, reminiscent, continuity, and transition, etc. Expression elements of spatial tones can be derived into five classes such as light, color, material, pattern (texture), and depth. In conclusion, spatial characteristics of the Everyday-ness and expression elements of spatial tones consist of configuration matrixes to analyze the spatial tones of the contemporary architecture in Portugal. As a result of this study, the expression characteristics of spatial tones of contemporary architecture in Portugal are background-ness, one-ness, and inherence. I hope this study will be applied to the basic data of the architectural Everyday-ness.

고전압 전도 방출 전자파 저감을 위한 DC링크 전류 최소화 제어

이길호(Lee Kil-ho),최범진(Choi Beom-Jin),강병남(Kang Byung-nam) 대한전기학회 2022 대한전기학회 학술대회 논문집 Vol.2022 No.11

현대 일본 실내 디자인의 와비-사비적 표현 경향에 관한 연구

이길호(Lee, Kil-Ho),이정욱(Lee, Jeong-Wook) 한국실내디자인학회 2007 한국실내디자인학회 학술대회논문집 Vol.9 No.3

이온 주입 공정시 발생한 실리콘 내 결함의 제어를 통한 p+ - n 초 저접합 형성 방법

이길호(Kil-Ho Lee),김종철(Jong-Choul Kim) 한국진공학회(ASCT) 1997 Applied Science and Convergence Technology Vol.6 No.4

트랜지스터의 소오스/드레인 접합 특성에 가장 큰 영향을 미치는 인자는 이온 주입시 발생한 실리콘 내에 발생한 결함이라는 사실에 착안하여, 기존 소오스/드레인 접합 형성 공정과 다른 새로운 방식을 도입하여 이온 주입에 의해 생긴 결함의 제어를 통해 고품질 초 저접합 p^+-n 접합을 형성하였다. 기존 p^+ 소오스/드레인 접합 형성 공정은 (49)^BF₂ 이온 주입 후 층간 절연막들인 TEOS(Tetra-Ethyl-Ortho-Silicate) 막과 BPSG(Boro-Phospho-Silicate-Glass)막을 증착 후 BPSG막 평탄화를 위한 furnace annealing 공정으로 진행된다. 본 연구에서는 이러한 기존 공정과는 달리 층간 절연막 증착 전 저온 RTA 첨가 방법, (49)^BF₂와 ¹¹B을 혼합하여 이온 주입하는 방법, 그리고 이온 주입 후 잔류 산화막을 제거하고 MTO(Medium temperature CVD oxide)를 증착하는 방법을 제시하였으며, 각각의 방법은 모두 이온 주입에 의한 실리콘 내 결함 농도를 줄여 기존의 방법보다 더 우수한 양질의 초 저접합을 형성할 수 있었다. From the concept that the ion implantation-induced defect is one of the major factors in determining source/drain junction characteristics, high quality ultra-shallow p^+-n junctions were formed through the control of ion implantation-induced defects in silicon substrate. In conventional process of the junction formation, p^+ source/drain junctions have been formed by (49)^BF₂^+ ion implantation followed by the deposition of TEOS(Tetra-Ethyl-Ortho-Silicate) and BPSG(Boro-Phospho-Silicate-Glass) films and subsequent furnace annealing for BPSG reflow. Instead of the conventional process, we proposed a series of new processes for shallow junction formation, which includes the additional low temperature RTA prior to furnace annealing, (49)^BF₂^+/¹¹B^+ mixed ion implantation, and the screen oxide removal after ion implantation and subsequent deposition of MTO (Medium Temperature CVD oxide) as an interlayer dielectric. These processes were suggested to enhance the removal of ion implantation-induced defects, resulting in forming high quality shallow junctions.

현대 건축에서 나타난 현상적 공간에 관한 연구

이길호(Lee, Kil-Ho),이정욱(Lee, Jung-Wook) 한국실내디자인학회 2013 한국실내디자인학회논문집 Vol.22 No.6

The purpose of this study clarifies an expression characteristic of the phenomenal space. The architecture is an interface between human and nature. Nature presents herself as phenomena. Thus, the phenomenal space should be approached as the essence of architecture that is to accommodate nature. Phenomenon is related to everyday life and shares flow naturally within it. The phenomenon and everyday life form a relationship through the mediating elements that are time, place, and image. If these mediating elements are developed as spatialized elements, time becomes the converse, place becomes the overlap, and shape becomes the revealing. Also, spatial components that are substituted with these elements are void/solid, form, and materials. The relational characteristics of phenomenal space can be identified through these, and such characteristics are one-ness, continuity, and coincidence of opposites. Phenomenal space is expressed with spatial tones and accepted as spatial atmospheres. For the analysis, 15 works of swiss architects were selected to which spatial elements were applied. And It were composed that analysis by arranging these components as the relational network found that expression characteristics. Trough the analysis, It was found that expression characteristics of phenomenal space of the architecture of Swiss architects were prototypicality, primitiveness, and originality. As a results, It is considered that the role of the space that contains the value of everyday life, the value of the phenomenon is necessary.

특징점의 융선형태 정보를 이용한 지문인식

박중조,이길호,Park Joong-Jo,Lee Kil-Ho 한국융합신호처리학회 2005 융합신호처리학회 논문지 (JISPS) Vol.6 No.2

최근 개인인증 기술에 대한 요구가 증가하고 있다. 지문인식은 이 요구에 대응하여 광범위하게 사용되고 있는 생체인식 기법중의 하나이다. 본 연구에서는 특징점의 융선형태 정보를 이용한 지문매칭 알고리즘을 제시한다. 여기서 융선형태는 1차원 이산신호로 표현되어 사용된다. 본 알고리즘은 다음의 절차로 처리된다. 먼저, 입력지문과 등록지문의 모든 특징점에서 융선을 1차원 이산신호로 표현하여 융선형태 정보를 얻는다. 그리고 두 지문에서 유사한 융선형태를 갖는 특징점쌍을 구한 후 이로부터 두 지문의 회전각도와 이동변위의 후보를 구한다. 이 후보들로부터 군집화 기법을 통해 최종적인 회전각도와 이동변위를 얻어 입력지문에 대해 정렬을 수행한다. 마지막으로 정렬된 입력지문과 등록지문사이에 일치되는 특징점쌍을 찾아 매칭률을 계산한다. 실험결과 $0.79\%$의 FAR에서 $18.0\%$의 FRR를 달성하였다. Recently, the social requirement of personal identification techniques has been increasing. Fingerprint recognition is one of the biometries methods that has been widely used for this requirement. This paper proposes the fingerprint matching algorithm that uses the information of the ridge shapes of minutiae. In which, the data of the ridge shape are expressed in one-dimensional discrete-time signals. In our algorithm, we obtain one-dimensional discrete-time signals for ridge at every minutiae from input and registered fingerprints, and find pairs of minutia which have the similar ridge shape by comparing input fingerprint with registered fingerprint, thereafter we find candidates of rotation angle and moving displacement from the pairs of similar minutia, and obtain the final rotation angle and moving displacement value from those candidates set by using clustering method. After that, we align an input fingerprint by using obtained data, and calculate the matching rate by counting the number of corresponded pairs of minutia within the overlapped area of an input and registered fingerprints. As a result of experiment, false rejection rate(FRR) of $18.0\%$ at false acceptance rate(FAR) of $0.79\%$ is achieved.

3-D 웨이브 트림 형태의 유동특성에 관한 연구

이덕구(Deok Gu Lee),조남철(Nam Cheol Cho),이길호(Kil Ho Lee),김기수(Ki Su Kim),송수용(Soo Yong Song) 대한기계학회 2011 대한기계학회 춘추학술대회 Vol.2011 No.10

Facilities and economic development of plant facilities, the countrys underlying facilities to improve the energy efficiency of many studies are under way. In particular, ultra supercritical pressure power plants or under construction, stops the development of the critical pressure power plants and boilers that contributes main feed water control valve or main steam dump valve at the fluid cavitation and vibration control out of pipes and valves due to breakage and damage to parts of the plant raises a number of cases has caused them to stop the coup. In this study, we confirmed through the analysis of computation fluid dynamics and field demonstration test that in the control valve trim structure, 3-D Wave Trim with the flow path of Z-axis fluid collision, XY-axis labyrinth and flexion type could dissipate the energy by fluid resistance, turn number, flow path area etc and result in pressure drop down.

활성탄 담체가 포함된 Jet-Loop Reactor를 이용한 종합염색폐수처리

박종탁(Jong Tack Park),이길호(Kil Ho Lee),류원률(Won Ryul Ryu),조무환(Moo Hwan Cho) 한국생물공학회 2002 KSBB Journal Vol.17 No.3

텐서플로우 라이트 프레임워크의 GPU 위임 정책 개선

김민성(Min-Sung Kim),이지훈(Ji-Hoon Lee),주성진(Seong-Jin Ju),이길호(Kil-Ho Lee) 대한전자공학회 2023 대한전자공학회 학술대회 Vol.2023 No.6

With the emerging growth of mobile, embedded system-on-chip (SOCs), serving applications and services using Deep Neural Network (DNN) on them have become popular. TensorFlow Lite [1] is one of widely used DNN frameworks in embedded domain. For accelerated execution, it enables DNN applications to run on top of graphic processing units (GPUs). However, the current version of ensorFlow Lite employs a naïve GPU assignment policy, resulting in restricted execution acceleration. In this paper, we propose an improved GPU assignment policy for TensorFlow Lite. We implemented and tested our approach in Nvidia Jetson NX and TensorFlow Lite. The result show that our approach reduced inference latency about 40% compared to the vanilla TensorFlow Lite.