[제9주차 정규강좌] “탄소중립시대, 왜 도시인가?” / “지속가능발전의 의미와 전략”

송재민,김부열 서울대학교 환경대학원 2021 環境論叢 Vol.68 No.-

임베디드 시스템 기반 지능형 영상 감시 시스템 구현

송재민,김동진,정용배,박영석,김태효,Song, Jae-Min,Kim, Dong-Jin,Jung, Yong-Bae,Park, Young-Seak,Kim, Tae-Hyo 한국융합신호처리학회 2012 융합신호처리학회 논문지 (JISPS) Vol.13 No.2

본 논문에서는 NIOS II 임베디드 플랫폼을 기반으로 하는 지능형 영상 감시 시스템을 구현하였다. 지금까지의 입베디 드 기반의 영상 감시 시스템들은 하드웨어의 의존도가 높아 특정한 목적에 제한되는 단점이 있었다. 이러한 한계를 개 선하기 위하여, 필자들은 그 응용의 목적에 따라 폭 넓게 적용 가능한 유연성이 높은 임베디드 플랫폼을 구현하였다. 소프트웨어 중심 프로그래밍 기법의 주요 문제점인 고속 처리를 위하여, 핵심 부분인 하드웨어 플랫폼에서 SOPC형 NIOS II 임베디드 프로세서와 영상처리 알고리즘을 소프트웨어 프로그래밍과 C2H(The Altera NIOS II C-To-Hardware(C2H) Acceleration Compiler) 컴파일러를 사용하는 하드웨어 프로그래밍을 통합하여 시스템의 성능을 향상 시켰다. 그리고 NIOS II 임베디드 프로세서 플랫폼을 중심으로 각각의 디바이스 인터페이스를 통합 관리하는 서버 시스템을 구축하고, 사용자의 접근 효율을 높이기 위해 네트워크상에서 제어하는 기능을 추가하였다.본 시스템을 영상 감시를 위한 지정된 구역에 설치하여 시험하고 그 성능을 평가하였다. In this paper, an intelligent visual surveillance system based on a NIOS II embedded platform is implemented. By this time, embedded based visual surveillance systems were restricted for a special purpose because of high dependence upon hardware. In order to improve the restriction, we implement a flexible embedded platform, which is available for various purpose of applications. For high speed processing of software based programming, we improved performance of the system which is integrated the SOPC type of NIOS II embedded processor and image processing algorithms by using software programming and C2H(The Altera NIOS II C-To-Hardware(C2H) Acceleration Compiler) compiler in the core of the hardware platform. Then, we constructed a server system which globally manage some devices by the NIOS II embedded processor platform, and included the control function on networks to increase efficiency for user. We tested and evaluated our system at the designated region for visual surveillance.

한국의 세계유산을 활용한 패션문화상품 개발 - 한글 글자꼴과 건축물을 중심으로 -

송재민,김지영,최종명,Song, Jaemin,Kim, Jiyoung,Choi, Jongmyoung 복식문화학회 2017 服飾文化硏究 Vol.25 No.5

As a plan for establishing Korea's cultural identity and its competitive edge in the world market and for enhancing Korea's cultural status, creative and unique high value-added cultural products need to be developed utilizing our inherent cultural assets. Accordingly, this study focused on the development of the design of fashion cultural products that utilize the convergence of Hangeul our peculiar font style and Korea's cultural heritage, which is registered as part of UNESCO's World Heritage. A design method was devised that converges archetypal images of cultural property with the unique Hangeul font in a way that targets Korea's symbolic architectures. The symbolic architecture includes Korea's world-heritage pagoda architecture, such as Seokgatap pagoda and Dabotap pagoda at Bulguksa temple. It also included the architecture of royal palace, such as Injeongjeon hall at Changdeokgung palace. Finally, it also included the architecture of the fortress wall, such as Paldalmun gate in Hwaseong fortress. Thus, by developing cultural assets made from a convergence between architecture and the Hangeul font as a consumer-product image that has universality, the possibility of cultural products was pursued by applying color planning after an analysis that involved extracting the compositional colors of the flags of the world. This research and approach will lead to opportunities for further progress for Korea's cultural products in the global market as a results of additional recognition for their value, excellence, and universal appeal.

한국형 토양유실공식에 의한 토양유실량 현장예측

송재민,양재의,임경재,박윤식 한국지하수토양환경학회 2019 지하수토양환경 Vol.24 No.5

In 2013, the Ministry of Environment in South Korea promulgated a new regulatory bulletin that contained revisedenforcement ordinance on soil management protocols. The bulletin recommends the use of Universal Soil Loss Equation(USLE) for the soil erosion estimation, but USLE has limited applicability in prediction of soil erosion because it does notallow direct estimation of actual mass of soil erosion. Therefore, there is a great need of revising the protocol to allowdirect comparison between the measured and estimated values of soil erosion. The Korean Soil Loss Equation (KORSLE)was developed recently and used to estimate soil loss in two fields as an alternative to existing USLE model. KORSLEwas applied to estimate monthly rainfall erosivity indices as well as temporal variation in potential soil loss. The estimatedpotential soil loss by KORSLE was adjusted with correction factor for direct comparison with measured soil erosion. Theresult was reasonable since Nash-Stucliff efficiency were 0.8020 in calibration and 0.5089 in validation. The resultssuggest that KORSLE is an appropriate model as an alternative to USLE to predict soil erosion at field scale.

정신지체 학생의 비만치료 프로그램

송재민 국립특수교육원 1997 현장특수교육 Vol.4 No.4

Parenteral, non-live rotavirus vaccine: recent history and future perspective

송재민 대한백신학회 2021 Clinical and Experimental Vaccine Research Vol.10 No.3

Since the widespread introduction of oral and live attenuated rotavirus vaccines around the world in 2009, the impacts of disease burden and the effects of disease reduction in developing countries have been proven. However, in low and middle-income countries, the vaccine efficacy is somewhat lower than in developed countries due to differences in nutritional conditions, microbial environments of individuals, and other factors. In addition, as oral, live vaccines have been found to be associated with rare but serious side effects, the development of a next-generation vaccine with safety, improved effectiveness, and ease of storage is currently underway. New vaccine strain developed by the Centers for Disease Control and Prevention in the United States are undergoing preclinical testing of efficacy, antigen dose, and administration route in the form of a heat-treated inactive vaccine, and a recombinant protein-based trivalent subunit vaccine developed by the Program for Appropriate Technology in Health is undergoing clinical trial in phase III. Several research groups are also developing non-replicating protein-based rotavirus vaccines using virus-like particles and nanoparticles. This review provides a brief overview of the development status and technology of parenteral, non-live rotavirus vaccines worldwide.

Free to Premium in Mobile TV Service: Intrinsic and Extrinsic Motivational Factors Affecting Free Users’ Paid Subscription Intention

송재민,류성한,김영걸 한국경영정보학회 2023 Asia Pacific Journal of Information Systems Vol.33 No.2

Mobile TV refers to the service that provides live broadcasting and video-on-demand content through a mobile device. In addition to the advertisement as the early-stage revenue model, the paid subscription model has emerged as a more sustainable revenue source for mobile TV services. In this study, with the surveys of 450 free mobile TV users, we examine the motivational factors influencing their intention to adopt a paid subscription model. Results show that three extrinsic motivations, price fairness, subjective norm, and mobile TV utilization, are positively associated with free users’ paid subscription intention. In contrast, intrinsic motivations, such as hedonic need, spatiotemporal convenience, and self-efficacy, have no significant influence on the intention. We also found that the expected value is positively associated with attitude toward mobile TV service, also positively influencing the paid subscription intention.

CDR을 사용한 FPGA 기반 분산 임베디드 시스템의 클록 동기화 구현

송재민,정용배,박영석,Song, Jae-Min,Jung, Yong-Bae,Park, Young-Seak 대한임베디드공학회 2017 대한임베디드공학회논문지 Vol.12 No.4

Time synchronization between distributed embedded systems in the Real Time Locating System (RTLS) based on Time Difference of Arrival (TDOA) is one of the most important factors to consider in system design. Clock jitter error between each system causes many difficulties in maintaining such a time synchronization. In this paper, we implemented a system to synchronize clocks between FPGA based distributed embedded systems using the recovery clock of CDR (clock data recovery) used in high speed serial communication to solve the clock jitter error problem. It is experimentally confirmed that the cumulative time error that occurs when the synchronization is not performed through the synchronization logic using the CDR recovery clock can be completely eliminated.

세계문화유산 한국 성곽 건축물을 활용한 패션소품 디자인 개발

송재민,최종명,김지영 한국감성과학회 2017 춘계학술대회 Vol.2017 No.-

본 연구는 우리나라의 정체성과 고유성을 잘 드러내 주고 있는 문화 아이콘으로 한국의 문화유산 중 유네스코 세계문화유산에 등재되어 세계적으로 탁월한 가치를 인정받는 건축물 문화재 중에서 성곽 건축물인 화성과 남한산성을 선정하여 문화재의 원형 이미지를 한글 글자꼴과 융합하는 방법을 고안하여 스카프와 넥타이 등 패션소품의 디자인 개발에 초점을 두어 진행하였다. 성곽 건축물과 한글 글자꼴을 융합하기 위하여 건축물의 기하학적인 형태와 조화를 이룰 수 있도록 고딕체의 글자꼴을 활용하여 가로, 세로의 비율과 굵기의 변화를 적용하여 입체감과 통일감을 느낄 수 있도록 글자꼴을 개발하였으며, 성곽 건축물의 외형 이미지를 라인작업으로 추출하여 모티브 디자인을 개발하였다. 추출된 건축물의 외형 모티브에 개발된 글자꼴의 자음과 모음을 활용하여 형태와하거나 자음만을 축소, 확대하여 성곽 건축물의 이미지를 형태화하여 표현하였다. 이와 같이 개발된 화성과 남한산성의 모티브 디자인을 세계 국기의 주요 색상을 활용하여 패션소품 디자인을 개발하였다. 스카프 아이템의 컨셉은 문화재의 이미지를 통해서 한글의 정체성을 느낄 수 있도록 클래식한 이미지에 중점을 두어 표현하였으며, 넥타이 아이템의 컨셉은 한글의 자음과 모음, 문화재이미지를 패턴화한 모티브를 적용하여 현대적이고 모던하면서도 우리의 고요한 정서를 느낄 수 있도록 중점을 두어 표현하였다.

정보 융합 칼만-Consensus 필터를 이용한 분산 센서 네트워크 구현

송재민,하찬성,황지홍,김태효,Song, Jae-Min,Ha, Chan-Sung,Whang, Ji-Hong,Kim, Tae-Hyo 한국융합신호처리학회 2013 융합신호처리학회 논문지 (JISPS) Vol.14 No.4

무선 센서 네트워크에서 동적 시스템에 대한 consensus 알고리듬은 센서 네트워크의 데이터 융합을 위해 신축적인 알고리듬을 적용할 수 있다. 본 논문은 분산 센서 데이터 기반의 평균적인 consensus 특성을 이용하여 n개의 센서 계측치들의 평균을 추적하기 위해 센서 네트워크의 노드들로 구성되는 하나의 분산 데이터 융합 필터를 구현하였다. 본 consensus 필터는 센서 네트워크에서 분산 칼만 필터링에 의한 구조로 데이터 융합의 문제를 해결한다. consensus 필터의 최적 수렴특성, 잡음 전파의 감소 및 빠른 입력신호들의 추적 능력을 보여준다. 필터링 처리 결과를 확인하기 위해 지그비 통신을 이용하여 각 센서의 출력신호와 필터링 처리 결과 및 각 센서의 개별적 신호들을 통합하고 consensus 필터링 처리 결과를 보였다. In wireless sensor networks, consensus algorithms for dynamic systems may flexibly usable for their data fusion of a sensor network. In this paper, a distributed data fusion filter is implemented using an average consensus based on distributed sensor data, which is composed of some sensor nodes and a sink node to track the mean values of n sensors' data. The consensus filter resolve the problem of data fusion by a distribution Kalman filtering scheme. We showed that the consensus filter has an optimal convergence to decrease of noise propagation and fast tracking ability for input signals. In order to verify for the results of consensus filtering, we showed the output signals of sensor nodes and their filtering results, and then showed the result of the combined signal and the consensus filtering using zeegbee communication.