A5024480383- Heat Transfer Mechanisms
- Optical Wireless Communication Technologies
- Underwater Vehicles and Communication Systems
- Underwater Acoustics Research
- CCD and CMOS Imaging Sensors
- Nanofluid Flow and Heat Transfer
- Photonic and Optical Devices
- Advanced Optical Sensing Technologies
- Infrared Target Detection Methodologies
- Robotics and Sensor-Based Localization
- Augmented Reality Applications
- Heart Failure Treatment and Management
- Medication Adherence and Compliance
- Thin-Film Transistor Technologies
- Speech and Audio Processing
- Oceanographic and Atmospheric Processes
- Diabetes Management and Education
- Educational Technology and Pedagogy
- Advanced Optical Imaging Technologies
- 3D Surveying and Cultural Heritage
- Health and Wellbeing Research
- Educational Technology and Assessment
- Fluid Dynamics and Turbulent Flows
- Image Processing Techniques and Applications
- Heat Transfer and Optimization
Henan Institute of Technology
2005-2021
Kyung Hee University
2015-2019
University of Arizona
2019
Columbia University
1976-2017
An all-digital low-power CMOS edge detection image sensor array is presented. Each pixel contains a voltage-controlled ring oscillator to achieve and cost-efficient digital-only detection. While conventional methods require high computing power large chip area process intensity maps, this work implements an parallel processing algorithm that detects differences between neighboring pairs on chip, hence reducing the aforementioned cost overheads. In particular, simple column-shared frequency...
Abstract In this article, we present an accurate and easy to use augmented reality (AR) application for mobile devices. addition, show how better organize track artifacts using museum employees both the device a 3D graphic model of in PC server. The AR can connect server, which maintains status including its location respective room location. system relies on measurements rooms as well coordinates reference markers rooms. measured through are stored server displayed at corresponding rendered...
Additive manufacturing (AM), also known as 3D printing technology, is applied to fabricate complex fin structures for heat transfer enhancement at inner surface of tubes, which conventional technology cannot make. This work considered rectangular fins, scale and delta fins with staggered alignment the wall tubes internal flows. Laminar flow convective 500 < Re 2000 has been numerically studied, performance 3D-printed interrupted compared that straight continuous smooth tubes. The benefit...
Acoustic wavefront fluctuations and time-base distortions were measured on a long linear receiving array with 2000 ft vertical aperture. The hydrophones buoyed slightly off the ocean bottom in roughly uniform distribution over aperture length. Continuous acoustic transmission up to 17.6 h of hyperbolic FM signal frequency sweep from 350 450 Hz was used each seven experiments at ranges 145, 250, 495, 635 NM measure distortions. Simultaneously, determined changes arrival time across 10-msec...
Wavefront fluctuations, rotations, and distortions, measured for a particular arrival in the multipath set long-range propagation, were cross correlated with acoustic-signal time-base distortions same arrival. Although wavefront perturbations contain higher frequency components than signal significant correlation amplitudes found time rotation, distortion, distortion rotation correlations. The results demonstrate that common causes, such as tides, overtides, internal waves, underlie both...
A light field image sensor is fabricated on a standard complementary metal-oxide-semiconductor (CMOS) process. The uses two grating layers of various layer-tolayer distances to take advantage Talbot effect. horizontal placement the upper relative lower one has three types configurations. By shifting left or right aligned position grating, incident from left, right, and center can be differentiated. Furthermore, color selectivity analyzed by varying slit spacing favor particular color's...
A lensless light field image sensor configuration is presented to realize a proximity communication system from multi-light-emitting diode (LED) clusters with different incident angles. The fabricated on standard complementary metal–oxide–semiconductor (CMOS) process and utilizes the Talbot effect. Two metal layers are stacked above photodiode acting as diffraction gratings at top masking layer bottom placed depth either pass or block light. In particular, we introduce optical scheme achieve...
In order to accurately analyze the motion characteristics of nanofluid particles in flow state, a method for micro-motion analysis based on machine vision was proposed. The influence temperature nanoparticles studied by establishing water-based near-wall simulation model nanofluids, and Lennard-Jones potential parameters nanofluids were obtained. Machine imaging technology is used establish reference system image acquisition. Based this system, images are collected, detected. An experimental...