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We explored the influence of several electrospinning parameters on the fiber formation and characterized them through the Scanning Electron Microscope (SEM). By utilizing the optimized electrospinning parameters, large-scale alignment quantum rods film had been fabricated and characterized successfully. The photoluminescence (PL) result showed that the polarization ratio is able to be achieved up...
This paper presents optimal third harmonics in both permanent magnet (PM) shaping and current waveform to improve the output torque of five-phase surface-mounted PM (SPM) machines. The optimal value of third harmonic injected into the sinusoidal PM shape and current waveform for maximum torque improvement is analytically derived and validated by both finite element (FE) analyses and experiments. It...
In this paper, we propose a shape-guided segmentation algorithm for fine-grained visual classification(FGVC). First, edge information is extracted from the query image and compared with each sample of training set, which can help us retrieve a subset of candidate proposals. These proposals are used to learn prior shape knowledge by separately estimating the foreground probabilities of corresponding...
In this work, the efficacy of subharmonic aided pressure estimation to detect portal hypertension (PH; i.e., portal vein (PV) pressures > 6–10 mmHg) is investigated. A Logiq 9 ultrasound scanner (GE Healthcare, Milwaukee, WI) with a 4C probe (transmit/receive: 2.5/1.25 MHz) was configured to obtain unprocessed radiofrequency (RF) data post pulse inversion. Fourteen canines were scanned. The main...
Iris segmentation is a component of iris recognition system, and noncircular iris is hard to segment accurately. This paper presents an iris segmentation algorithm using linear basis function and RANSAC (Random SAmple Consensus) which iterately derives fine iris boundary curves from coarse iris boundary points. The algorithm consists of three steps. In step 1, coarse center and radius of iris are...
This paper presents a sketch-based modeling system with auxiliary planes as references for 3D freeform shape design. The user first creates a rough 3D model of arbitrary topology by sketching some contours of the model. Then the user can use sketching to perform deformation, extrusion, etc, to edit the model. To regularize and interpret the user's inputs properly, we introduce some rules for the strokes...
Extracting accurate positions of eyes, nose and mouth, is a crucial process for face recognition and facial expression recognition. Classical methods such as Active Appearance Model (AAM) use the principal component analysis to reduce the dimensionality of appearance data, and an iterative search to find facial features by minimizing an error criteria of the reduced appearance data. In this paper,...
This paper presents a style description method for product form design. Designers, as designated `form-givers', are expected to understand the essence of formal styles and the skill how to give sensitive, intentional style to the artifacts they design. Firstly, this paper investigates the essence of formal style, including its definition, function, structure and components. Secondly, a style description...
Safety is essential to the society and our life. Its importance is extremely significant in manufacturing and service sectors. Warning signal words and surrounding shapes can convey valuable information about danger and have been used for safety management in practice. Evaluation score given by respondents is once the single indicator to identify their perceptions of implied hazard for warning signal...
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