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설계인증 BIM적용을 위한 평가 및 운영 체계에 대한 기본연구
이한영(Hanyoung Lee),김준갑(Jungab Kim),최중식(Jungsik Choi),원서경(Seokyung Won) (사)한국CDE학회 2022 한국CDE학회 논문집 Vol.27 No.4
BIM technology is one of the important 4th industrial technologies that can improve productivity in the design and construction stages. Various studies are being conducted to utilize BIM technology in the design, construction, and maintenance stages. However, research related to design certification is still insufficient. In this study, a study was conducted for the evaluation and operation of various design certifications using BIM technology. Among the design certifications, the certifications to be analyzed were selected according to the priority analysis result. Acquisition process for each selected certification was derived, and detailed analysis of the major evaluation items of the derived process was carried out, and a checklist template for BIM application was prepared according to the result. In this study, the evaluation and operation framework for the application of BIM technology for design certification is established, and it will be used for future operation guidelines and checklist research.
이한영(Hanyoung Lee) 대한전기학회 2009 정보 및 제어 심포지엄 논문집 Vol.2009 No.10
범용 발포 폴리에티렌 은박매트를 사용하여 침입자 감지센서를 구현하였다. 발포 폴리에티렌 상하 은박면 사이의 정전용량이 침입자에 의해 가해지는 압력에 의하여 변화되는 것을 감지하는 방식을 사용하였다. 센서는 외부의 습도, 진동, 온도변화, 정압의 영향을 받지 않아 이동 및 매설이 가능하고 10㎏ 이상의 침입자가 들어오는 것을0.4~4㎡ 면적에서 감지되는 것을 실험적으로 보여주었다.
고체윤활제 Cu₂S첨가 청동의 미끄럼 마찰마모특성 연구
이한영(Hanyoung Lee),김태준(Taejun Kim),조용재(Yongjae Cho) 한국트라이볼로지학회 2004 한국트라이볼로지학회 학술대회 Vol.39 No.-
MOS₂ is a well-known metal sulfide applied as solid lubricants and an additive to prolong the life of sintered bearings under severe conditions. However. the high price of MoS₂ limited its wide application. This study is aimed to investigated the possibility for application to solid lubricants for Cu₂S as a substitute of MoS₂. Bronzes added Cu₂S and MoS₂ are produced by powder metallurgy in this study. and then evaluated their friction and wear properties. The sliding wear test using pin-on-disc type machine. was conducted at several sliding speeds for three type test pieces. bronze and bronzes added Cu₂S/MoS₂. Addition of Cu₂S to bronze leads to relatively good friction and wear properties. although it is not so good as addition of MoS₂. But the properties of bronze added Cu₂S would be not suitable for the condition under the high sliding speed.
이한영(Hanyoung Lee) 대한전기학회 2010 정보 및 제어 심포지엄 논문집 Vol.2010 No.10
산란광을 이용한 차량용 우적감지 센서는 광도파관을 이용하는 일반 우적감지 센서와는 달리 수신되는 신호가 극히 미약하므로 이를 신호 대 잡음비를 저하시키지 않으면서 고감도로 수신할 필요가 있다. 제안하는 산란광을 이용한 우적감지 센서용 광송수신 장치는 간섭필터를 사용하여 주변광의 영향을 최소화 하였으며 전기적 신호 증폭단계에서 반송파 주파수를 이용한 변조방법과 확장디지털 신호 변환법을 사용하여 신호 대 잡음비를 최대로 유지하였다. 스프레이어를 이용한 가상강우 환경에서 제작된 광송수신 장치를 장착한 산란광 감지방식 우적감지 센서는 빗방울 감지시 불필요한 궤환이나 혼신 없이 차량용 우적감지 센서로 이용할 수 있는 가능성을 보여 주었다.
HLS 를 이용한 FPGA 기반 양자내성암호 하드웨어 가속기 설계
정해성,이한영,이한호,Haesung Jung,Hanyoung Lee,Hanho Lee 반도체공학회 2023 반도체공학회 논문지 Vol.1 No.1
본 논문에서는 High-Level Synthesis(HLS)을 이용하여, 차세대 양자내성암호인 Crystals-Kyber를 하드웨어 가속기로 설계하여 FPGA에 구현하였으며, 성능 분석결과 우수성을 제시한다. Crystals-Kyber 알고리즘을 Vitis HLS 에서 제공하는 여러 Directive 를 활용해서 최적화 설계를 진행하고, AXI Interface 를 구성하여 FPGA-기반 양자내성암호 하드웨어 가속기를 설계하였다. Vivado 툴을 이용해서 IP Block Design 를수행하고 ZYNQ ZCU106 FPGA 에 구현하였다. 최종적으로 PYNQ 프레임워크에서 Python 코드로 동영상 촬영 및 H.264 압축을 진행한 후, FPGA 에 구현한 Crystals-Kyber 하드웨어 가속기를 사용해서 동영상 암호화 및 복호화 처리를 가속화하였다. This paper presents the design and implementation of Crystals-Kyber, a next-generation postquantum cryptography, as a hardware accelerator on an FPGA using High-Level Synthesis (HLS). We optimized the Crystals-Kyber algorithm using various directives provided by Vitis HLS, configured the AXI interface, and designed a hardware accelerator that can be implemented on an FPGA. Then, we used Vivado tool to design the IP block and implement it on the ZYNQ ZCU106 FPGA. Finally, the video was recorded and H.264 compressed with Python code in the PYNQ framework, and the video encryption and decryption were accelerated using Crystals-Kyber hardware accelerator implemented on the FPGA.
Proposal of Smart Cart Design to Improve User Experience
Hyemin Chung(정혜민),Hanyoung Lee(이한영),Sechon Park(박세천) 대한인간공학회 2021 대한인간공학회 학술대회논문집 Vol.2021 No.11
Objective: The aim of this study is to improve users’ shopping experience through smart shopping cart design, which complements the inconvenience of existing shopping carts. Background: Consumers experience several difficulties in supermarkets. Common problems are spending time searching for products and waiting in line at the counter. For the convenience of customers, unmanned technology is in progress, and cases of using smart shopping carts are increasing. Method: To figure the focus points for design, we first divided the research field into three; general, unmanned, and smart carts. We then identified each category’s (1) shopping path, (2) how to find the goods, and (3) how users pay. The wasted time while shopping was discovered through this comparative analysis, and we looked into factors that could reduce shopping time. Through the prototype testing, we figured out that it is necessary to optimize the speed of product recognition. This is because lower barcode recognition functions also affect user shopping experiences. Results: The smart shopping cart noticeably reduced shopping times and routes through installed payment function and touchscreen. There is no need to take out and put the goods back in for payment, since the search for product’s location information on the touchscreen can be obtained immediately without having to wander or look for staff. The app linkage also increased the user’s shopping quality in the supermarket. Conclusion: Nowadays the users are oriented towards convenience. In line with the user trends, supermarkets are becoming unmanned using self-counters. The smart shopping cart we designed is also one of the ways to improve the user shopping experience. Smart shopping carts compensate for consumers’ inconveniences that could not be met only by self-checkout counters. Application: This study will provide smart shopping carts that can easily be used to help consumers save time and improve user’s shopping experience.