http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
선 스펙트럼 쌍 파라메타의 효율적인 부호화를 위한 예측 3분리 다단계 벡터양자화 기법
임상현(Sang-Hyun Im),조정래(Jung-Rae Jo),이상운(Sang-Un Lee),유재성(Jae-Sung Ryu),장익성(Ik-Sung Jang),이기희(Gi-Hee Lee),임인칠(In-Chil Lim) 한국정보과학회 1994 한국정보과학회 학술발표논문집 Vol.21 No.2A
본 논문에서는 음성 스펙트럼 정보를 효율적으로 부호화할 수 있는 벡터양자화기 구조를 제안한다. 제안한 구조는 벡터 양자기의 단점인 탐색 계산요구량을 줄이기 위하여 분리 구조와 다단계 구조를 결합시키고 선형예측부호기 (LPC: Linear Predictive Coding) 계수에서 변환된 선 스펙트럼 쌍 (LSP: Line Spectrum Pair) 파라메타의 분포 특성을 효율적으로 이용할 수 있는 예측 구조를 갖는다. 제안한 구조의 부호책 설계방식으로 M-탐색(M-search) 공동 최적화 알고리듬을 적용하고, 왜곡 측정지준이 WMSE(Weighed Mean Squared Error)일 때 다단계 벡터 양자기 구조의 각 단계의 분할에 대한 중앙값 결정 방법을 제시한다.
임상현(Sang-Hyun Im),이동훈(Dong Hoon Lee),강현창(Hyun Chang Kang),김상현(Sang-Hyun Kim) 한국기계가공학회 2021 한국기계가공학회지 Vol.20 No.11
Generally, multi-legged walking robots have excellent mobility in rough and uneven terrain, and they are deployed for the safety of rescuers in various disaster environments. However, as each leg is driven by a number of actuators, it leads to a complicated structure and high power consumption; therefore, it is difficult to put them into practical use. In this article, a new concept is proposed of a walking robot whose legs are driven by a complex linkage structure to overcome the deficiencies of conventional multi-legged walking robots. A double crank-rocker mechanism is proposed, making it possible for one DC motor to actuate the left and right movements of two neighboring thighs of the multi-legged walking robot. Each leg can also move up and down through an improved cam structure. Finally, each mechanism is connected by spur and bevel gears, so that only two DC motors can drive all legs of the walking robot. The feasibility of the designed complex linkage mechanism was verified using the UG NX program. It was confirmed through actual production that the proposed multi-legged walking robot performs the desired motion.
안전교육 7대 표준안을 반영한 2015개정 체육과 중학교 교과서 안전영역 비교분석
임상현 ( Im Sang-hyun ),장병권 ( Chang Byung-kweon ),김영식 ( Kim Young-sik ) 제주대학교 해양스포츠센터 2020 해양스포츠연구 Vol.10 No.1
This study was conducted to explore the textbook safety section of the 2015 Revised Physical Education Middle School textbooks. To this end, a total of 12 textbooks were analyzed using Bereday’s comparative analysis method, and the results are as follows. First, in the compositional system, the safety ratio was significantly smaller than that of other areas, and the difference between publishers was large. Second, the content system and functional elements were composed of all 12 textbooks including the core concepts, achievement standards, and content elements presented in the curriculum, but some textbooks expressed functional elements differently. Third, the elements reflecting the seven standards safety education guideline included both life safety and emergency measures, but there were differences in the reflection of traffic safety and disaster safety. Following are the suggestions according to the research results. First, it is necessary to expand the ratio in the safety section. Second, learners should be provided with various safety education related to the physical. Third, the imbalance of the elements reflecting the seven standard safety education guideline among textbooks should be minimized.
양측성 안구운동이 조현병 환자의 얼굴 재인에 미치는 영향
이나현,김지웅,임우영,이상민,임상현,권혁찬,김민영,김기웅,김승준,Lee, Na-Hyun,Kim, Ji-Woong,Im, Woo-Young,Lee, Sang-Min,Lim, Sanghyun,Kwon, Hyukchan,Kim, Min-Young,Kim, Kiwoong,Kim, Seung-Jun 한국정신신체의학회 2016 정신신체의학 Vol.24 No.1
연구목적 조현병 환자의 흔한 신경인지적 결함 중 대표적인 것으로 재인 기억의 손상을 들 수 있다. 또한 조현병 환자에게서는 일반인에게 관찰되는 정서 자극에 대한 기억 증진 현상이 명확하게 나타나지 않는다. 한편, 기억 검사 시행 전 양측성 안구운동을 수행할 경우 일반적인 재인 기억뿐만 아니라 정서가를 가진 자극에 대한 기억이 보다 향상되는 것으로 알려져 있다. 본 연구에서는 이러한 양측성 안구운동의 기억 향상 효과가 조현병 환자에게서도 나타나는지를 알아보고자 하였다. 방 법 조현병 환자 21명이 연구에 참여하였다. 참여자들은 일주일 간격으로 두 번 분노 표정 혹은 무표정을 보이는 얼굴 사진들을 학습한 후 양측성 안구운동 혹은 안구 고정 조건을 무작위 순서로 거쳐 이전에 학습한 사진에 대한 재인 과제를 시행하였다. 양측성 안구운동 여부 및 얼굴 사진 표정 차이에 따른 인식 정확도, 반응 편향성, 정답 반응 시간의 차이를 이원 반복측정 분산분석을 사용하여 분석하였다. 결 과 조현병 환자는 양측성 안구운동을 시행한 경우 그렇지 않은 경우에 비해 통계적으로 유의미하게 얼굴 재인 과제에서 정답 반응 시간이 단축되었고(F=5.812, p<0.05), 반응 편향성이 완화되었다(F=10.366, p<0.01). 조현병 환자가 얼굴 재인 과제 수행 시 양측성 안구운동 조건과 얼굴 자극 표정 조건 간의 상호작용은 통계적으로 유의미하지 않았다. 결 론 본 연구 결과는 양측성 안구운동이 조현병 환자의 일반적인 재인 기억 능력을 촉진시킬 수 있으나 정서 자극의 처리를 보다 촉진시키지는 못함을 보여준다. 향후 신경생리학적 혹은 신경영상학적 검사 등의 추가 연구를 통해 이러한 기억 촉진 효과의 생물학적 기전을 밝혀야 할 것이다. Objectives : The deficit of recognition memory has been found as one of the common neurocognitive impairments in patients with schizophrenia. In addition, they were reported to fail to enhance the memory about emotional stimuli. Previous studies have shown that bilateral eye movements enhance the memory retrieval. Therefore, this study was conducted in order to investigate the memory enhancement of bilaterally alternating eye movements in schizophrenic patients. Methods : Twenty one patients with schizophrenia participated in this study. The participants learned faces (angry or neutral faces), and then performed a recognition memory task in relation to the faces after bilateral eye movements and central fixation. Recognition accuracy, response bias, and mean response time to hits were compared and analysed. Two-way repeated measure analysis of variance was performed for statistical analysis. Results : There was a significant effect of bilateral eye movements condition in mean response time(F=5.812, p<0.05) and response bias(F=10.366, p<0.01). Statistically significant interaction effects were not observed between eye movement condition and face emotion type. Conclusions : Irrespective of the emotional difference of facial stimuli, recognition memory processing was more enhanced after bilateral eye movements in patients with schizophrenia. Further study will be needed to investigate the underlying neural mechanism of bilateral eye movements-induced memory enhancement in patients with schizophrenia.
어깨 안정화운동과 맥켄지 신장운동이 전방머리자세에 미치는 영향
박승욱 ( Seung Wook Park ),백용현 ( Yong Hyeon Baek ),서지수 ( Ji Su Seo ),이지현 ( Ji Hyun Lee ),임상현 ( Sang Hyeon Im ),이주은 ( Joo Eun Lee ),배원식 ( Won Sik Bae ) 대한통합의학회 2015 대한통합의학회지 Vol.3 No.4
Purpose : The purpose of this study was to find out the effect of exercise on the angle and distance between scapular stability and McKenzie stretch exercise. Method : 30 volunteers took part in this experiment and we divided into three groups(experimental group A, experimental group B, control group C). Experimental group A performed scapular stabilization exercise and experimental group B performed McKenzie neck stretching exercise and control group didn’t perform any exercise. Experimental group(A, B) received a total of 12 exercise session over a 4 week period (three times per week). Posture and craniovertebral angle changes of the neck using GPS measurements reported. Result : The CVA and distance change after exercise were significantly reduced in the experimental group A and B. Conclusion : Therefore, we have confirmed through experiments reducing a CVA and distance between scapular stabilization and McKenzie neck stretching exercises, whereby we would also be helpful to ensure the treatment of forward head posture.