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시 · 청각 인지능력 향상을 위한 공감각 기반 입체영상-입체음향 변환 시스템
배명진(Myung-Jin Bae),김성일(Sung-Il Kim) 한국디지털콘텐츠학회 2022 한국디지털콘텐츠학회논문지 Vol.23 No.1
This paper proposes and implements a system that converts visual information, which is the most used sense, into auditory information to improve cognitive ability. For visual information of image, color, texture, and shape were extracted, and for auditory information of sound, melody, harmony, and rhythm information were extracted. For the 3D representation, information on the depth of the image and the 3D coordinate space of sound were used. As for the conversion method, a melody was selected and output probabilistically according to the color distribution, and the texture expressed the characteristics of GLCM in major and minor harmonies. Finally, the shape was selected according to the distribution of angles by detecting line components of Hough transform. To evaluate the transformation process, the image was projected on the wall to confirm the visual transformation, and a three-dimensional expression was expressed by moving an arbitrary object. When analyzing music generated by photographing using a realSense camera, it can be confirmed it was converted and output according to the proposed conversion process.
기계구조용 탄소강(SM45C)의 단속절삭 시 절삭력예측을 위한 회귀방정식 도출
배명일(Myung-Il Bae),이이선(Yi-Seon Rhie) 한국기계가공학회 2016 한국기계가공학회지 Vol.15 No.4
Interrupted cutting has different cutting characteristics compared with continuous cutting. In interrupted cutting, the workpiece has a groove that regularly impacts the cutting tool and workpiece. Therefore, tool damage occurs rapidly, and this increases the cutting force and surface roughness. In this study, we performed interrupted cutting of carbon steel for machine structure (SM45C) using a coated carbide tool (TT7100). To predict the cutting force, we analyzed the experimental results with a regression analysis. The results were as follows: We confirmed that the factors affecting the principal force and radial force were cutting speed, depth of cut, and feed rate. From the multi-regression analysis, we deduced regression equations, and their coefficients of determination were 89.6, 89.27, and 28.27 for the principal, radial, and feed forces, respectively. This means that the regression equations were significant for the principal and radial forces but not for the feed force.
단침보강 세라믹 공구를 이용한 플라스틱 금형강(STAVAX)의 선삭가공
배명일(Myung-Il Bae),이이선(Yi-Seon Lee) 한국기계가공학회 2012 한국기계가공학회지 Vol.11 No.6
In this study, we turning plastic mold steel (STAVAX) against cutting speed, depth of cut, feed rate using whisker reinforced ceramic tool (WA1). To predict cutting force, analyze principal, radial, feed force with multi-regression analysis. Results are follows: From the analysis of variance, affected factor to cutting force feed rate, depth of cut, cutting speed in order and cutting speed was very small affect to cutting force. From multi-regression analysis, we extracted regression equation and the coefficient of determination(R2) was 0.9, 0.88, 0.856 at principal, radial and feed force. It means regression equation is significant. From the experimental verification, it was confirmed that principal, radial and feed force was predictable by regression equation.
배명일(Myung Il Bae),김형철(Hyeung Chul Kim),성철현(Chul Hyun Seong),김기수(Ki Soo Kim) 대한공업교육학회 1999 대한공업교육학회지 Vol.24 No.2
In this study, We analyze stiffness of aerostatic bearing using system of experiment for design of magnetic tape manufacture guide roller system and prepare to fundamental design data. Results are following; Affected factors to air bearing stiffness are bearing clearance, bearing length, nozzle diameter, pressure of input air, length of between nozzel distance and optimal conditions of aerostatic bearing are bearing clearance 0.0175㎜, bearing length 45㎜, nozzle diameter 0.2㎜, pressure of input air 7kgf/㎠, length of between nozzle distance 10mm.
PCB 드릴링용 스핀들을 위한 공기 베어링의 최적 설계
배명일(Myung Il Bae),김기수(Ki Soo Kim),이영호(Young Ho Lee) 대한공업교육학회 2001 대한공업교육학회지 Vol.26 No.1
In this study, The stiffness are analyzed aerostatic thrust and radial bearing for PCB drilling using system of experiment. The results are as follows: the stiffness of aerostatic thrust bearing are affected by input air pressure, clearance, number of nozzle. Also, the stiffness of aerostatic radial bearing are affected by input air pressure, diameter of nozzle, length of bearing. A recommended design conditions for aerostatic thrust bearing are as follow: input air pressure 7kg_f/㎠, clearance 0.02㎜, diameter of nozzle 0.2㎜, number of nozzle 7, bearing inner diameter 26㎜ and input air pressure 7kg_f/㎠, clearance 0.015㎜, diameter fo nozzle 0.2㎜, bearing length 45㎜, distance of nozzles 10.5㎜ for aerostatic radial bearing.
초경피복공구를 이용한 기계구조용 탄소강의 단속절삭시 표면거칠기 예측
배명일(Myung-Il Bae),이이선(Yi-Seon Rhie) 한국기계가공학회 2014 한국기계가공학회지 Vol.13 No.3
In this study, we carried out the interrupted cutting of carbon steel for a machine structure (SM45C) with a CVD-coated tool and conducted an ANOVA test and a confidence interval analysis to find factors influence the surface roughness and to obtain a regression equation. We found that factor which mostly affects the surface roughness during interrupted cutting was the feed rate. The cutting speed and depth of the cut only had small effect on the surface roughness. From the result of a multi-regression analysis during an interrupted cutting experiment, we obtained regression equation. Its coefficient of determination was 0.918, indicating that the regression equation was predictable. Compared to continuous cutting, if the feed rate increases, the surface roughness will also increase during interrupted cutting.
콘크리트 믹서 트럭용 믹서 감속기의 차동 유성 기어 트레인에 대한 위험속도 해석
배명호(Myung Ho Bae),배태열(Tae Yeol Bae),김당주(Dang Ju Kim) 유공압건설기계학회 2017 드라이브·컨트롤 Vol.14 No.1
The power train of a concrete truck mixer reducer includes differential planetary gears to get a large reduction ratio for operating the mixer drum in a compact structure. These differential planetary gears are a very important part of the mixer reducer where strength problems are the main concern. Gear bending stress, gear compressive stress and scoring failure are the main concerns. Many failures in differential planetary gears are due to the insufficient gear strength and resonance problems caused by major excitation forces such as gear mating failure in the transmission. In the present study, where the excitation frequencies are the gear tooth passing frequencies of the mating gears, a Campbell diagram is used to calculate differential planetary gear critical speeds. Mode shapes and natural frequencies of the differential planetary gears are calculated by CATIA V5. These are used to predict gear resonance failures by comparing the working speed range with the critical speeds due to the gear transmission errors of the differential planetary gears.
대구,경북지역 청소년의 가족상황 요인이 음주행동에 미치는 영향 -성별차이를 중심으로-
배명수 ( Myung Soo Bae ),김복열 ( Bog Yoeul Kim ),신미숙 ( Mi Sook Sin ) 한국노인의료복지학회 2014 노인의료복지연구 Vol.6 No.1
The object of this research checked the relationship of the family situation factors about the Daegu and Gyeongbuk teenager drinking and I examined the sex difference about that relationship. Especially the dangerous drinking and problem drinking rate and woman of which the problem drinking rate rises analyzed the dangerous drinking and cause in which the problem drinking rate is higher at the class switch than the man. it could know to be the common factor which a can be danger drink if the part-time job experience, the last academic background of their father and mother had man and woman altogether. the problem drinking factor was analyzed as a discriminative factor about the grade had man and woman altogether. I could know that when woman sees the man in the problem sound main cause, then the various factors are acting more much but the common factors is having an effect so that the problem sound week factors can be altogether overlapped with man and woman. as this result, male and female didn`t gave distinction of sex as generation homogeneity is same on both side. however, problem drinking and dangerous drinking increased much more when they were getting older.
색-청 공감각 인지 기반 사운드-컬러 신호 실시간 변환 시스템의 구현
배명진(Myung-Jin Bae),김성일(Sung-Ill Kim) 한국콘텐츠학회 2015 한국콘텐츠학회논문지 Vol.15 No.12
본 논문은 공감각의 한 부분인 색청(colored-hearing) 공감각을 이용한 사운드-컬러 신호 변환에 관한 연구로서, 인간이 인지 할 수 있는 오감 중 공감각적 변환이 가장 많이 일어나는 청각과 시각을 이용한 실시간 변환 시스템의 구축을 목표로 한다. 본 논문에서 제안하는 음-색 실시간 변환 방법으로서, 입력으로 사용하는 MIDI(Musical Instrument Digital Interface) 신호에서 음계(scale), 옥타브(octave) 및 음의 세기(velocity)를 추출한 후 HSI 컬러모델의 기본 요소인 색상(hue), 명도(intensity) 및 채도(saturation)에 각각 대응하여 변환하는 방법으로 단순하지만 직관적인 방법을 사용한다. 변환된 HSI 컬러 모델은 모니터 출력을 위해 RGB 컬러 모델로 최종 변환하여 출력한다. 실험에서, MIDI 입력신호 전송 H/W 시스템과 VC++ 기반 해당 사운드-컬러 변환 입·출력 S/W 모니터링 시스템을 구축하여 사운드에서 컬러로의 출력이 제안한 방식에 따라 값이 출력됨을 확인하였다. This paper presents a sound into color signal conversion using a colored-hearing synesthesia. The aim of the present paper is to implement a real-time conversion system which focuses on both hearing and sight which account for a great part of bodily senses. The proposed method of the real-time conversion of color into sound, in this paper, was simple and intuitive where scale, octave and velocity were extracted from MIDI input signals, which were converted into hue, intensity and saturation, respectively, as basic elements of HSI color model. In experiments, we implemented both the hardware system for delivering MIDI signals to PC and the VC++ based software system for monitoring both input and output signals, so we made certain that the conversion was correctly performed by the proposed method.