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Since news videos are valuable sources of multimedia information on real-world events, there is a demand for viewing them efficiently. However, there is a problem that summarization methods based on auditory contents do not take into account the visual contents. In the case of news videos, due to its presentation style where audio contents and visual contents do not necessarily come from the same...
In this letter, a three-dimensional (3D) image reconstruction approach is proposed for terahertz (THz) holographic by a sharply reduced amount of antennas and frequency samples, without reducing the quality of the image reconstruction results. With the obtained 3D sparse random sampling data, a sparse recovery procedure combined by two-dimensional fast Gaussian gridding based non-uniform Fourier transform...
This paper proposes a method to estimate the stator winding temperature of permanent magnet synchronous motor (PMSM) driven by direct torque control (DTC) strategy, where the stator resistance is used as a direct indicator of the temperature. In this method, the quantitative relationship between the dc current offset and the corresponding changes in torque is derived. The dc current offset is generated...
Optimized configuration method of transformer magnetic bias treatment devices is proposed on the basis of multi-indexes comprehensive evaluation. First, based on analyzing of the mechanism of transformer magnetic bias and its influence factors, the paper constructs a satisfactory optimization model. Followed, it is calculated about satisfaction degree and urgency degree of each substation influenced...
Air quality index (AQI) is an evaluation standard of air quality and a major concern in the daily lives of people. However, predicting the AQI is difficult; existing prediction methods are few and they cannot satisfy the requirements of real-time prediction. This paper proposes an efficient GPU-based parallel Kriging algorithm (GP-Kriging) for real-time AQI prediction. Parallel computing strategy...
An efficient vehicle detection method is proposed for remote sensing images provided by Chinese GF-2 satellite with the 1-meter spatial resolution in this paper. Considering the characteristics of the vehicle on the road in GF-2 image, dark and light vehicles are firstly detected on the masked road using the semi-automatic dual-threshold technique. The residual disturbance (e.g. shadows, lane line...
Here we present the design and performance of tunable dual-band and wide-angle perfect absorber, consisted of graphene and VO2. Simulation results show the device operating in long-wave infrared region. The two absorption peaks, including location and intensity, can be tuned in a wide range by either electrical, thermal, or their combination.
An active hybrid-material longwave infrared absorber based on graphene ribbon array (GRA) was studied. Each pair of the ribbons is conducted by lossy metal. Simulation results reveal that its absorption peak in resonance is broader than that of GRA absorber with no metal conduction, and wavelength can be tuned by varying chemical potential of the GRA.
In the field of target detection in remote sensing images, lots of learning algorithms have been presented, among which support vector machine was widely utilized. However, this kind of vector represents only one pixel of a remote sensing image that ignores the spatial relationship of neighbors. Besides, with the increase of spatial resolution of remote sensing images, detail detection of targets...
Multi-resolution analysis (MRA) is a useful technique for multispectral (MS) image pan-sharpening. To overcome the limitation of the conventional wavelet-based method, multi-directional MRA approaches have been proposed to provide an efficient directional information representation. In this paper, we present a new hybrid method for MS image pan-sharpening that uses non-subsampled contourlet transform...
In very high resolution (VHR) SAR images, traditional method failed to accurately and completely extract vessels because of the holes and fractures in the target body in addition to the interference of adjacent objectives. In this paper, a saliency method based on SLIC (simple linear iteration clustering) segmentation is adopted to detect the targets, and the salient results are further post-processing...
End cutting 1D layout process is a promising candidate for sub-10nm process nodes. To be correctly manufactured, any pair of end cuts must be either merged/aligned or apart from each other with at least a minimum distance. This constraint adversely affects the manufacturability, especially when the end cuts have to be solely printed with the conventional lithography technology. To improve the manufacturability,...
Terahertz imaging has been shown to have the potential to detect objects hidden under common coverings. In this paper, a 360° fast rotating imaging scheme for the detection of concealed objects using terahertz radar is proposed and validated by proof-of-concept experiments. The imaging results of three dangerous objects, i.e. hammer, scissor and metal handgun model, covered with fabric and cardboard...
In combination with the mathematical model and finite element analysis, we carry the research on tower crane structural damage detection method in the load lifting process. The paper takes the laboratory mini tower crane as the study object. First we establish the FEM model of the tower crane under the normal and the damage condition. Then get the dynamic displacement of the normal and the damage...
This work presents a low complexity dual band wireless narrowband transceiver with integrated PAs. The digital-centric transceiver is suitable for IEEE 802.15.4 (ZigBee etc.), 802.15.4g SUN, Bluetooth, especially Bluetooth Low Energy and the upcoming 802.11ah sub-GHz WLAN, to enable future internet-of-things applications. The output power for the low band (800 to 960MHz) is 24.7dBm at 53.9% efficiency...
End Cutting 1D layout design is a promising candidate for sub-10nm process nodes. Given a 1D layout with horizontal wires, cut redistribution technique is used for sliding the line-end cuts in order to align them vertically or resolve spacing conflicts. The aligned cuts can then be merged into a single shot of cuts. In this paper, we proposed a network flow based method for efficient cut redistribution...
We present a 4 ns constant-pulse-duration Electro-optically cavity-dumped Ho:YAG oscillator. The average power of 12.6W and the peak power of 31.5 kW were obtain at the repetition rate of 100 kHz, corresponding to the slope efficiency of 57.2% and beam quality factor of M2 ∼1.1. The highest peak power was 310 kW at 10 kHz.
Bone morphogenetic protein (BMP) signaling is essential for neurogenesis and bone formation. Dullard phosphatase functions as a negative regulator of BMP signaling by promoting the dephosphorylation or degradation of BMP receptors. In contrast, dullard regulates nuclear membrane biogenesis. This report aims to characterize dullard and determine the role played by it in cellular signaling.
In this paper, the application of minimal resource allocation network (MRAN) trained with Unscented Kalman Filter (UKF) to the nonlinear channel equalization problems was discussed. Using novel criterion and prune strategy, the algorithm uses online learning, and has the ability to grow and prune the hidden neurons to realize a minimal network structure. Simulation results show that the equalizer...
The earth-mode traveling wave attenuates when propagating along the cable or overhead line and the high-frequency components attenuate faster than the low-frequency components. Therefore, the ratio between the amplitudes of high-frequency component and low-frequency component decreases monotonously as the fault distance increases. Thus, when a constant value is taken for earth modulus velocity, the...
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