A5102874730- Vehicle Noise and Vibration Control
- Acoustic Wave Phenomena Research
- Tactile and Sensory Interactions
- Teleoperation and Haptic Systems
- Virtual Reality Applications and Impacts
- Engineering Applied Research
- Noise Effects and Management
- Speech Recognition and Synthesis
- Speech and Audio Processing
- Music and Audio Processing
- Asian Culture and Media Studies
- Public-Private Partnership Projects
- Housing Market and Economics
- Visual perception and processing mechanisms
- Effects of Vibration on Health
- Insurance and Financial Risk Management
- Diverse Topics in Contemporary Research
- Insurance, Mortality, Demography, Risk Management
- Aerodynamics and Fluid Dynamics Research
- Cinema and Media Studies
- Visual Culture and Art Theory
- Financial Literacy, Pension, Retirement Analysis
- Psychosocial Factors Impacting Youth
- Water Systems and Optimization
- Color perception and design
Kookmin University
2020-2023
Pohang University of Science and Technology
2012-2020
Korea Atomic Energy Research Institute
2012
Yuhan University
2012
Georgia Institute of Technology
2009-2011
Korea Advanced Institute of Science and Technology
2003-2008
This paper presents a new approach to data-driven modeling of isotropic haptic textures using frequency-decomposed neural networks from the contact acceleration data that are captured when stylus is scanned on textured surface with diverse scanning velocities and normal forces. We first describe motorized texture scanner was developed for accurate easy collection under wide variety conditions. then propose two network models different topologies: unified model feeds all data, velocity, force...
This paper presents an improved approach to geometry-based haptic texture modeling and rendering. We adopt photometric stereo, one of the most accurate algorithms for 3D surface reconstruction, increase resolution captured geometry profiles. benefit higher can enhance realism rendered textures in terms roughness. To this end, we have designed constructed a dome-shaped lighting structure use using stereo. With apparatus stereo algorithms, achieve very high order 10 pm. also identify stiffness...
We present a hybrid framework for the modeling and rendering of both homogeneous inhomogeneous textures with high realism by combining force vibration feedback. Given real texture sample, we first capture force-feedback model using photometric stereo, which is one most accurate algorithms 3D surface reconstruction in computer vision. This method allows us to micro-geometry represent it two-dimensional (2D) height map very resolution order 10$\mu \text{m}$ . also provide new algorithm...
With the introduction of variable friction displays, new possibilities have emerged in haptic texture rendering on flat surfaces. In this work, we propose a data-driven method for realistic an electrovibration display. We first describe motorized linear tribometer developed to collect lateral frictional forces from textured surfaces under various scanning velocities and normal forces. then inverse dynamics model display its output-input relationship using nonlinear autoregressive with...
Recently, haptics has begun to impact consumer products, e.g., mobile phones and automobiles. In this paper, we introduce one such new application, that is, haptic simulation of refrigerator operation, present an initial prototype for the front door. A degree-of-freedom interface is designed built provide torque feedback Simulation software consisting system control, graphic renderer, renderer are also developed. For rendering, motion dynamics a door modeled, implemented based on model....
This paper presents a data-driven thermal rendering framework for highly realistic re-creation of the dynamics real objects in virtual environment. We begin with physics-based model and then extend it to compute desired temperature display without identification parameters objects. Our approach is data-driven: we collect responses between hand object many different combinations initial temperatures interpolate several render stimuli target temperatures. also present perceptual evaluation...
In haptics, two major modalities, force and vibration, are used to model real textures recreate them in a virtual environment. This paper compares the perceptual advantages disadvantages between approaches by user study. particular, similarity of texture is rated using five criteria geometry, roughness, hardness, friction overall similarity. These categorical comparisons allowed us provide general guidelines appropriate uses approaches.
The demand for motorcycles has seen steady growth in recent years. For motorcycles, as well automobiles general, sound quality (SQ) is one of the important factors affecting riding comfort. Thus, with wider field automobile manufacturing, motorcycle manufacturers regard SQ-based noise control a useful tool improving competitiveness and popularity global commercial market. Among numerous parts motorcycle, exhaust system key to determining SQ, its performance. In this study, distribution...
본 연구는 유한요소해석에 의해 300톤 골리앗 크레인의 구조해석 및 평가를 하였다. 구조는 110m의 스판과 50m의 높이로 구성되어 있다. 크레인은 자중, 주행 관성력, 트롤리의 풍하중, 지진하중을 받는다. 다양한 하중 조건을 입력하여 구조 해석을 수행하였다. 등가응력과 전체 변형량을 ANSYS Workbench에서 얻은 결과를 이용하여 안전성 여부를 판단하였다.
This paper presents an investigation of the minimum verification error linear regression (MVELR) method for discriminative linear-transform based adaptation. The MVE criterion is employed to estimate a set transformations which achieve smallest empirical average loss with given adaptation data. MVELR directly minimizes total detection errors, some are results characteristic mismatch in In this study, segment-based phonetic detectors reflecting important processing layer speech event...
The effects of configuration changes on the acoustical response in a vehicle cabin were measured for middle-class sport-utility (SUV) with maximum five passengers. measurement results showed that effect posture binaural was relatively larger than case when changing seats. Moreover, sound field delivered from nearby source and range higher signal-to-noise ratio robust. overall performance degradation can be predicted, based these results, required level margin to maintain target precision...
민간투자사업의 핵심 성공요인은 민간사업자와 정부 간의 적절한 위험 분담과 민간사업자가 부담하는 대비 수익의 제공이다. 현재 국내 민간투자사업은 대부분의 위험을 수익형 민자사업(BTO)과 정부가 임대형 민자사업(BTL)로 구분되어 있을 뿐, 정부와 다양한 형태로 분담하는 방식은 아직 도입되어 있지 않은 상태이다. 이 결과 도로, 항만 등 민간투자사업 방식으로 진행되는 사업에 대한 과다한 위험부담으로 인해 민간사업자의 민간투자사업에의 참여가 극도로 저조한 상황이다. 본 연구에서는 중 가장 큰 위험인 수요위험(demand risk)을 새로운 방식의 민간투자사업을 살펴보고자 한다. 보다 구체적으로 운영수입을 모두 정부에 귀속시킨 후 운영수입 수준에 따라 민간사업자에게 계단형으로 지급되는 방식을 수준의 정부지급금을 실물옵션 모형 및 위험중립적(risk neutral) 방법론을 통해 산출하고, 산출된 구간별 정부지급금에 반영된 사업수익률을 추정하고자 연구에서 사용한 방법론 결과는 향후...