Vehicle-to-Infrastructure (V2I) 정보 연동 실내 자율발렛주차 시스템

김민수(Minsoo Kim),안준우(Joonwoo Ahn),이양우(Yangwoo Lee),박재흥(Jaeheung Park) 한국자동차공학회 2022 한국자동차공학회 부문종합 학술대회 Vol.2022 No.6

In this paper, we propose the autonomous valet parking system with vehicle-to-infrastructure (V2I) communications for indoor parking. The proposed system utilizes V2I communications to obtain a navigation plan. It includes the vehicle’s position and information about which direction to head at each intersection. With only this navigation plan, the autonomous vehicle avoids obstacles and drives in response to an intersection. The experimental results showed that, with the proposed system, the vehicle achieves efficient and safe navigation and successfully parks at a real indoor parking environment.

Test-per-clock 스캔 방식을 위한 효율적인 테스트 데이터 압축 기법에 관한 연구

박재흥,양선웅,장훈,Park, Jae-Heung,Yang, Sun-Woong,Chang, Hoon 대한전자공학회 2002 電子工學會論文誌-SD (Semiconductor and devices) Vol.39 No.9

P45 본 논문에서는 SOC의 내장된 코어를 테스트하기 위한 새로운 DFT 방법인 순차적 테스트 데이터 압축 방법을 제안한다. 순차적 테스트 데이터 압축 방법은 테스트 데이터양을 줄이기 위하여 공유 비트 압축과 고장 무검출 패턴 압축 방법을 이용하였다. 그리고 순차적 테스트 데이터 압축 방법을 이용하는 회로는 스캔 DFT 방법을 기반으로 하고 있으며, test-per-clock 방법을 적용하여 매 클럭마다 테스트 할 수 있는 구조를 가지고 있다. 제안된 압축 방법의 실험을 위하여 벤치마크 회로인 ISCASS85와 ISCASS89 완전 스캔 버전을 이용하였으며, ATPG와 고장 시뮬레이션을 위하여 ATALANTA를 사용하였다. 실험 결과 순차적 테스트 데이터 압축 방법의 테스트 데이터의 양이 스캔 DFT를 적용한 회로에 비해 최대 98% 까지 줄어듦을 확인하였다. This paper proposes serial test data compression, a novel DFT scheme for embedded cores in SOC. To reduce test data amounts, share bit compression and fault undetectable fault pattern compression techniques was used. A Circuits using serial test data compression method are derived from a scan DFT method including a test-per-clock technique. For an experiment of the proposed compression method, full scan versions of ISCASS85 and ISCASS89 were used. ATALANTA has been used for ATPG and fault simulation. The amount of test data has been reduced by maximum 98% comparing with original data.

IEEE 1149.1을 이용한 내장된 자체 테스트 기법의 구현

박재흥,장훈,송오영,Park, Jae-Heung,Chang, Hoon,Song, Oh-Young 한국통신학회 2000 韓國通信學會論文誌 Vol.25 No.12

본 논문에서는 내장된 자체 테스트(BIST: Built-In Self Test) 기법의 구현에 관해 기술한다. 내장된 자체 테스트 기법이 적용된 칩은 영상 처리 및 3차원 그래픽스용 부동 소수점 DSP 코어인 FLOVA이다. 내장된 로직 자체 테스트 기법은 FLOVA의 부동 소수점 연산 데이터 패스에 적용하였으며, 내장된 메모리 자체 테스트 기법은 FLOVA에 내장된 데이터 메모리와 프로그램 메모리에 적용하였다. 그리고, 기판 수준의 테스팅을 지원하기 위한 표준안인 경계 주사 기법(IEEE 1149.1)을 구현하였다. 특히, 내장된 자체 테스트 로직을 제어할 수 있도록 경계주사 기법을 확장하여 적용하였다.

초기 말초성 안면신경마비에 대한 단무지 안추 신전법 병행 치료 효능의 임상적 고찰

박재흥,이창환,이유환,권기순,윤현민,전대성,한민석,Park, Jae-Heung,Lee, Chang-Hwan,Lee, Yoo-Hwan,Kwon, Gi-Sun,Yoon, Hyun-Min,Jeun, Dae-Seong,Han, Min-Seok 척추신경추나의학회 2011 척추신경추나의학회지 Vol.6 No.1

Objectives : The aim of this study is to investigate the effectiveness of combining "Danmuji Anchu Traction technique" on acute peripheral facial paralysis. Methods : Clinical studies were done 36 patients who were treated acute peripheral facial paralysis to Dept. of Acupuncture and Moxibustion, of Oriental Medicine Hospital Dongeui University from July 10, 2009 to September 15, 2010. subjects were randomly divided into 2 groups. : Complex oriental medical treatment without "Danmuji Anchu Traction technique" treated group (Group A, n=18), Complex oriental medical treatment with "Danmuji Anchu Traction technique" treated group (Group B, n=18). All process of treatment were performed by double blinding method. To compare the effectiveness of treatment applied for two groups, we used Yanagihara's unweighed grading system at before treatment, after 1week and 2weeks of treatment. Results: The Yanagihara's Scores of Group B and Improvement Indexes of Group B were higher than those of Group A, and showed significant difference statistically. "Danmuji Anchu Traction technique" can be available for relieving symptoms related with Acute Peripheral Facial Paralysis. And there were significant differences statistically between Complex oriental medical treatment without "Danmuji Anchu Traction technique" and Complex oriental medical treatment with "Danmuji Anchu Traction technique" on Acute Peripheral Facial Paralysis. Conclusions: These results suggested that "Danmuji Anchu Traction technique" effected for Acute Peripheral Facial Paralysis.

스쿼트 운동 시 발목 관절에 키네시오 테이프의 적용이 넙다리 네갈래근과 뒤넙다리근의 활성에 미치는 영향

박재흥,이승희,김소정,조승주,박현희,이유진,심혜지,최보람,Park, Jae-heung,Lee, Seung-hee,Kim, So-jung,Cho, Seung-ju,Park, Hyun-hee,Lee, Yu-jin,Sim, Hye-ji,Choi, Bo-ram 대한물리치료과학회 2021 대한물리치료과학회지 Vol.28 No.2

Background: During squat exercises, Ankle joint stability during squat movement transfers forces produced by unstable supports or various loads to the leg joints and trunk, reducing the risk of injury; therefore, a reference is needed for correct ankle joint posture during squat exercises. The purpose of this study was to examine the effect of ankle joint stability on quadriceps femoris and hamstring activation during squat exercises. Design: Quasi-experiment one group pretest-posttest design. Methods: The participants in this study were 20 volunteers who performed squat exercises with and without kinesiology tape. We measured quadriceps femoris and hamstring activation using surface electromyography. The ankle joint was stabilized with kinesiology tape using the ankle balance taping (ABT) method. A paired t-test was performed to compare differences between taping conditions. Results: Vastus medialis and vastus lateralis activation were greater following squat exercises with kinesiology tape than without; however, the difference was not significant. Medial and lateral hamstring activation was not significantly different between taping conditions. Conclusion: Although it is difficult to maintain stability using kinesiology tape alone, ankle joint stability is believed to affect quadriceps femoris muscle activity, which increases the effectiveness of the squat exercise.

JPEG2000의 동적 ROI 코딩에서 개략적인 분할을 이용한 빠른 마스크 생성 기법

박재흥,이점숙,서영건,홍도순,김현주,Park, Jae-Heung,Lee, Jum-Sook,Seo, Yeong-Geon,Hong, Do-Soon,Kim, Hyun-Joo 한국정보처리학회 2010 정보처리학회논문지B Vol.17 No.6

It takes a long time for the users to view a whole image from the image server under the low-bandwidth internet environments or in case of a big sized image. In this case, as there needs a technique that preferentially transfers a part of image, JPEG2000 offers a ROI(Region-of-Interest) coding. In ROI coding, the users see the thumbnail of image from the server and specifies some regions that they want to see first. And then if an information about the regions are informed to the server, the server preferentially transfers the regions of the image. The existing methods requested a huge time to compute the mask information, but this thesis approximately computes the regions and reduces the creating time of the ROI masks. If each code block is a mixed block which ROI and background are mixed, the proper boundary points should be acquired. Searching the edges of the block, getting the two points on the edge, to get the boundary point inside the code block, the method searches a mid point between the two edge points. The proposed method doesn't have a big difference compared to the existing methods in quality, but the processing time is more speedy than the ones. 인터넷이 느린 환경이나 이미지가 큰 경우에 서버로부터 이미지를 전부 보는 데는 시간이 걸린다. 이를 위해, 이미지의 일부를 우선적으로 처리하는 방법이 필요하여, JPEG2000에서는 ROI(Region-of-Interest) 코딩으로 제공하고 있다. ROI 코딩은 이미지의 thumbnail을 사용자에게 보내어 개략적인 이미지를 보고 먼저 보고 싶어 하는 영역을 지정하면, 이 영역에 관한 정보가 서버로 전달되어, 서버는 사용자에게 이 영역을 우선적으로 전송한다. 이를 처리하기 위해, 기존의 방법은 사용자가 지정한 영역을 계산할 때, 섬세하게 계산을 함으로써 영역에 관한 마스크 정보 생성 시간을 많이 요구하였는데, 본 연구에서 제안하는 방법은 개략적으로 영역을 계산하고, ROI 마스크의 생성시간을 줄이는 방법을 제안한다. 각 블록에서 ROI와 배경이 섞여 있는 블록이면 적절한 경계선을 찾기 위하여 코드블록의 가장자리를 이진 탐색하여 두 경계지점을 얻고, 두 점 간의 중간에 위치한 코드블록 내의 경계점을 얻기 위하여, 두 점 간의 중간 지점을 이진 탐색한다. 이렇게 얻어진 세 점을 지나는 두 직선의 방정식을 이용해서 개략적인 ROI 코딩을 한다. 제안한 방법은 품질 면에서는 큰 차이가 없지만 실행 속도 면에서는 현저하게 빠르다는 것을 보인다.

자율 발렛 주차 시스템 개발 및 시뮬레이션 결과

안준우(Joonwoo Ahn),김민수(Minsoo Kim),임규범(GyuBeom Im),김민성(Minsung Kim),박재흥(Jaeheung Park) 한국자동차공학회 2018 한국자동차공학회 학술대회 및 전시회 Vol.2018 No.11

In this paper, we propose an efficient and safe method for autonomous valet parking system with a driving strategy considering uncertain environment in parking spaces. The proposed method consists of a vehicle controller with decision-making algorithms, a global and local path generation algorithm, and a three-dimensional LiDAR-based parking lot detection algorithm. The proposed method was validated via simulation results.

수직 주차에서 AVM을 이용한 동시적 위치추정 및 지도 생성

안찬우(Chanwoo Ahn),박재흥(Jaeheung Park) 한국자동차공학회 2020 한국자동차공학회 학술대회 및 전시회 Vol.2020 No.11

In this paper, we propose a Simultaeneous Localization And Mapping(SLAM) method for vertical parking scenario. Most commercial car uses ultrasonic sensor to localize vehicle’s position in parking lot. However, vehicle cannot be localized when there are not any obstacles around ego vehicle. The proposed method uses simple features from parking lines and localizes vehicle’s position without any assumption about obstacles around ego vehicle using only Around View Monitor(AVM). At first, cross point is proposed as a feature which can be used for tracking. Cross points on parking lines are detected using Deep Learning and parking lines are extracted using RANSAC and Canny Edge. Using detected cross points and parking lines, relative poses between frames are tracked using Iterative Closeset Point(ICP) and landmark based localization. Global position of detected cross point is used as landmark’s position and position of intersection from detected lines is used as local position of the corresponding cross point. Using landmark based localization, relative poses are calculated and accumulated errors are recovered. From above method, we build a 2D map which is continuously optimized. We evaluated our proposed approach on our own dataset and compared our result with LOAM(Lidar Odometry and Mapping in Real-time).

미용서비스업 중간관리자의 근무조건에 따른 조직몰입의 차이

박재흥 ( Jae-hong Park ),김수정 ( Su-jung Kim ),김슬기 ( Sul-gee Kim ),박주연 ( Joo-yeon Park ),박은준 ( Eun-jun Park ) 한국미용예술경영학회 2012 미용예술경영연구 Vol.6 No.3

The purpose of this study is to increase the organizational commitment for middle managers in the beauty business; the differences of organizational commitment according to the nature of middle management have been discovered and analyzed the sub-factors in this study have been identified as organizational commitment. The working terms requires career, leaving one’s job, average working days per week, average hours on the job, the frequency of attending and studying at other institutions, and participating in extracurricular activities; and the following vocational characteristics heavily influence empowerment. For this study, 514 beauticians have filled out a survey which was then analyzed: frequency analysis, factor analysis, reliability analysis, unitary analysis of variance by applying the SPSS 16.0. Duncon’s post-inspection was put to work to find the differences between groups. First, the working terms such as career, leaving one’s job and studying at other institutions, and participating in extracurricular activities gives significant influences the sub-factors which are organizational commitment. Secondly, by examining the working terms which are career, leaving one’s job, average working days per week, average hours on the job, the frequency of attending and studying at other institution and participating in extracurricular activities in average, when one has worked more than 11 years and the reason people leave is because they have not received the necessary education in order to do the job. most cases people either go to schools that gives college credit or diploma and offer a higher level education or attend private institutions for their education. Hence, based on the results, organizational structure and organizational management in beauty business give insightful empirical data.

샘플링 기반 경로 계획과 모델 예측 제어를 이용한 자율 주차 시스템

김민성(Minsung Kim),박재흥(Jaeheung Park) 한국자동차공학회 2018 한국자동차공학회 부문종합 학술대회 Vol.2018 No.6

In this paper, we propose a path planning and a path following method for the autonomous parking system. In order to consider the non-holonomic constraint of a vehicle, RRT star is used to plan paths. Model predictive control with the vehicle kinematic model is proposed to follow the path. To realize the autonomous parking system, we also consider the path re-planning at the point where forward and reverse paths are switched. The proposed method was validated via simulation results.