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This paper considers Terahertz (THz) sensing of contents on a single-layer object with time-domain spectroscopy (TDS) in a reflection mode. With an extremely small pulse width, the THz-TDS sensing is highly sensitive to non-ideal configurations such as a tilted or uneven sample, depth variation due to mechanical scanning operations, and intra-layer reflections. One consequence is sweep distortion...
Artificial flowers are mainly static objects. If we can make them movable with actuating mechanisms, sensors and controllers, this will make them more lively and entertaining. The aim of this paper is to develop artificial flower ornaments with dynamic, modular, programmable and green-energy characteristics. The dynamically artificial flower ornaments show the performances: bending of stems, blooming...
The rapid advance in three-dimensional (3D) confocal imaging technologies is rapidly increasing the availability of 3D cellular images. However, the lack of robust automated methods for the extraction of cell or organelle shapes from the images is hindering researchers ability to take full advantage of the increase in experimental output. The lack of appropriate methods is particularly significant...
A new Project named HITFiL (Heavy Ion Tumors Therapy Facility in Lanzhou) is being constructed. Its initial injector is a compact cyclotron, which provides a 7 Mev/10 uA carbon beam for the synchrotron. This paper introduces an effective method to design the isochronous magnetic field of the cyclotron. Using a 3D finite element code, an iterative shimming process has been accomplished successfully...
In this paper, we proposed a novel approach to shape classification. A new shape tree based on junction nodes can represent the global structure in a simple way. The statistic distribution of junctions can be learned by merging the shape trees. In the process of learning, context of a junction node is obtained to improve the rate of classification. We illustrate the utility of the proposed method...
In this paper, we show the shape evolution of GaAs islands which grow unconventionally from underneath an array of SiO2 nanodisks. The growth mechanism consists of catalytic growth and facet formation.
An empirical measure for the selection of the edge-enhancement Gaussian filter is developed. The Gaussian filter is specified by its standard deviation sigma ; the filter's spatial support is a function of sigma . An estimation procedure for sigma using Fourier analysis is described. The measure is easy to implement and is based totally on the image at hand. Experimental results suggest that this...
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