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The bandwidth required for TV content distribution is rapidly increasing due to the evolution of HDTV and Ultra HDTV. Service providers are constantly trying to differentiate themselves by innovating new ways of distributing content more efficiently with lower cost and higher penetration. We propose a cost-efficient wireless framework (WiLiTV) for delivering live TV services, consisting of a mix of...
This study aims to promote the assessment of, for, and as learning of Cantonese opera with the development of the Computerized Kinetic Chain Assessment and Learning System (CKCALS). The CKCALS captures and calibrates the coordinates and angles of the skeletal joints during learners' movements, compares them with the standard set by the experts, and provides instant feedback for learner's subsequent...
In this paper, a 3D non-linear finite element (FE) model was established to simulate the reliability performance of interconnects and ceramic in a power package under transient thermal loads and tests. There are two manually coupled simulation steps: The first step is transient thermal simulation. Transient cyclic or non-cyclic power loading is applied on the die. The transient temperature data of...
This paper presents a novel appearance and shape feature, RISAS, which is robust to viewpoint, illumination, scale and rotation variations. RISAS consists of a keypoint detector and a feature descriptor both of which utilise texture and geometric information present in the appearance and shape channels. A novel response function based on the surface normals is used in combination with the Harris corner...
Many standard robotic platforms are equipped with at least a fixed 2D laser range finder and a monocular camera. Although those platforms do not have sensors for 3D depth sensing capability, knowledge of depth is an essential part in many robotics activities. Therefore, recently, there is an increasing interest in depth estimation using monocular images. As this task is inherently ambiguous, the data-driven...
In this paper, a new 1200 V-class edge termination structure with trench double field plates is proposed and experimentally demonstrated. The double field plates are buried inside the trench. One of the field plates is for modulating electric field distributions along the trench and shifting the breakdown point to the active region for achieving the ideal planar junction breakdown voltage, and the...
Acquiring the accurate 3-D position of a target person around a robot provides fundamental and valuable information that is applicable to a wide range of robotic tasks, including home service, navigation and entertainment. This paper presents a real-time robotic 3-D human tracking system which combines a monocular camera with an ultrasonic sensor by the extended Kalman filter (EKF). The proposed system...
Graph Processing has been widely used to capture complex data dependency and uncover relationship insights. Due to the ever-growing graph scale and algorithm complexity, distributed graph processing has become more and more popular. In this paper, we investigate how to balance performance and cost for large scale graph processing on configurable virtual machines (VMs). We analyze the system architecture...
Several wideband millimeter-wave dielectric reflectarray antennas are discussed in this paper. Different phase distributions are realized by changing the shape or material of the array element. Three dielectric reflectarray of 20×20 elements operating at 100GHz are compared. The 1dB gain bandwidths of the dielectric reflectarray are larger than 10% and up to 40%. As compared to the microstrip reflectarray,...
We herein propose an evolutionary multi-agent system (EMAS for short) to build an ensemble of surrogates for prediction. In our EMAS, we employ six kinds of basic surrogates, including Gaussian process, Kriging model, polynomial response surface, radial basis function, radial basis function neural network, and support vector regression machine. We define each surrogate as one agent and co-evolve parameters...
In this paper, we present an instructional HPC-based platform, ModStore, for Singapore students to learn data science through National Science Experiment (NSE) big data challenge. Before the challenge, Singapore students, ranging from secondary school, high school to junior college, polytechnics and ITE, carry specially designed sensors to collect data on their daily travel and the surrounding environment...
A simplified non-minimum phase linear model is studied for a class of saucer-shaped aircraft in this paper. Then on the basis of sliding mode control, a fuzzy control law is designed to achieve fuzzy sliding mode control of saucer-shaped aircraft by means of fuzzy adjusting of error changing with sliding surface parameters and control soft coefficient. Finally, detailed analysis results of the simulation...
In order to solve the second-order simplified model of servo system, the feedback controller of the servo system is designed by using the traditional PID control method. Based on this, in order to realize the better adjustment of PID parameters, the fuzzy rules of PID parameters with error and error derivative are established, and the rule matrix is established to realize the fuzzy adjustment of PID...
In order to solve the problem of high false detection ration and poor real-time performance in the automated and optical inspection of surface defect on cartridge case, a visually high-speed method was proposed. Taking a typical 9mm cartridge case of handgun as the object and considering its surface material, types of defect and detection method, an optical detection system was established on the...
The high power density converter is required due to the strict demands of volume and weight in more electric aircraft, which makes SiC extremely attractive for this application. In this work, a prototype of 50 kW SiC high power density converter with the topology of two-level three-phase voltage source inverter is demonstrated. A gate assisted circuit is further introduced to reduce the switching...
The weight of the LCL filter is a major contributor of the total weight of a high power converter, especially the inverter-side inductor. The design of the inverter-side inductor requires multi-domain optimization in electromagnetic design, weight reduction, and thermal management with the objective of meeting power quality standards. In this paper, the inverter-side inductor, based on Amorphous core...
To recognize accessible regions successfully and accurately is an important part of mobile robot navigation in outdoor environment. This thesis studies that the modified Mean Shift algorithm is applied for region partition on outdoor images obtained by robot vision. Then all parts of these pictures are recognized through the combination BOW model and the Opponent SIFT feature. And finally the results...
Studies show that multiple modal biometric systems for small-scale populations perform better than single modal biometric systems for robots's recognition. This paper establishes a new fusion method for multiple biometric feature identification which combines visual with auditory information. Before the fusion, speaker recognition based on vector quantization and face recognition based on sparse representation...
With the prevailing of mobile phones and online video contents, the demand for mobile online video is increasing. The desire, however, is held down by the high mobile traffic cost. To solve this problem, an off-the-shelf solution is WiFi-Direct (WFD), which is widely available on a majority of mobile devices. There is, however, no systematic study of WFD-based group data transfer and cooperative video...
To retrain an existing multilayer perceptron (MLP) on-line using newly observed data, it is necessary to incorporate the new information while preserving the performance of the network. This is known as the “plasticitystability” problem. For this purpose, we proposed an algorithm for on-line training with guide data (OLTA-GD). OLTA-GD is good for implementation in portable/wearable computing devices...
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