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A research approach of crack detection of rotating shafts based on acoustic emission (AE) signals and machine learning is proposed in this paper. The relationship between crack intensity and domain features are investigated, and the features which could well indicate the crack condition are selected for modelling and crack prediction. Multiple Linear Regression (MLR), Artificial Neural Networks (ANN)...
In a magnetic tunnel junction (MTJ) device, the potential barrier height of the barrier layer, in presence of a bias voltage or an external magnetic field, can be affected by defects present in the barrier layer or at the barrier layer/ferromagnetic (FM) layer interfaces of the device. The defects may have structural as well as magnetic origin. Fluctuations of such defects (with a time scale that...
HP has recently made its plans to develop an ultrahigh-resolution seismic sensing solution public. This solution is being developed with Royal Dutch Shell Corporation for oil and gas exploration. Central to delivering this system is HP's new single axis seismic grade MEMS accelerometer. The HP device uses both bulk micromachining methods and standard thin film technologies as well as HP's new three...
This paper presents a new technique which combines variable-threshold (VT) keeper with split-domino (SD) logic technique to improve the power performance. The proposed technique yields 9-14% energy reduction, with 10% area overhead. We will compare the proposed method with the-state-of-the art for reducing leakage current in domino logic circuits. A 16-bit multiplexer circuit, in 0.13 mum CMOS technology...
In this paper, we compare different existing keeper techniques for reducing power consumption of wide domino logic circuits. We will compare power consumption plus area overhead of each of these methods, with the conventional keeper circuit. A 16-bit multiplexer circuit, in 0.13 mum CMOS technology operating at a frequency of 500 MHz is our test-bench. Simulations show split-domino (SD), with 53%...
This paper introduces our recently designed 9/7-10/8 dual-tree complex filter bank and studies its application in moving object detection and segmentation. The dual-tree complex wavelet transform (DT-CWT) is used in edge detection required for segmentation in video frames. The DT-CWT approach is compared with the previous methods based on scalar wavelets and multi-wavelets (MW), using double change...
In order to obtain a quantitative understanding of the influence of temperature on the multi-gap resistive plate chamber (MRPC) operation, we tested the performance of a 6-gap, 6.1×20cm 2 active area MRPC with cosmic rays at different temperatures. Results of measurements of noise rate, dark current and detection efficiency are presented.
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