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Network centrality reflects node importance in networks, which is a challenging problem in social network analysis. Based on Fuzzy Set and MYCIN theory, this paper proposes a novel node centrality measuring method and models n-monkeys dataset, where n is 20. Initially, we created monkeys relationship graph and generated relationship matrix based on the monkeys' encountering times in a specific time...
By incorporating two-dimensional photonic crystals into the surface of InGaN-based LEDs, the strong correlation between the air duty cycle and the light extraction efficiency of LEDs was demonstrated by optical and electrical measurement results.
A 330,000 gate field programmable gate array (FPGA) VS12C fabricated on 0.2μm full-depletion silicon-on-insulator (FD SOI) process is presented and the test results indicate this chip has the lower power and higher tolerance to radiation compared with Xilinx radiation-hardened XQVR300 chip implemented on 0.22μm epitaxial silicon. This paper demonstrates the benefit of the FD SOI technology on low...
The mismatch of current sources is caused by the circuit error and the process variation. Introducing the channel length modulation λ to the Pelgrom model for variation analysis, we describe a new ΔI/I model of current sources. To make it clear what variation parameter influences the mismatch, we implemented a test chip on 90nm process technology, where we can collect the characteristics variation...
This paper gives a new method to measure the speed of strip based on linear CCD. For the surface of any strip, the image signal collected by linear CCD can be seen as image with strip feature by accumulating for a while, and the directivity of the strip relate to the speed of the strip. The power spectrum of the strip image can reflect the degree of thickness and the directivity of the strip. So the...
This paper addresses the problem of transistor decomposition, which can be used in high accuracy analog applications and structured analog design. We made a test chip to verify the feasibility of the transistor decomposition because of the lack of theoretical support. The DC/AC measurement results from the chip suggests that the decomposition, the transistor channel tuning, as well as structured analog...
Efficient algorithms for mining frequent itemsets are crucial for mining association rules and for other data mining tasks. FP-growth algorithm has been implemented using a prefix-tree structure, known as a FP-tree, for storing compressed frequency information. Numerous experimental results have demonstrated that the algorithm performs extremely well. But In FP-growth algorithm, two traversals of...
Compared with other materials like metal, the nondestructive testing (NDT) of composites is still a relatively immature area. The ultrasonic thermography technology as well as the pulsed thermography technology is introduced for NDT of aircraft composite materials. Two specimens of aircraft composite material with a man-made defect were tested by these two methods respectively. The detection results...
A priori knowledge of noise information at array sensors is necessary in the optimization procedure with aim of improving passive broadband detection performance of array. When several noise sources are present and/or an analytical expression of the noise transfer function is not available, the sensor noise needs to be measured in the optimization which is very demanding when an array with large number...
A grid-connected photovoltaic (PV) power system with the high step-up ZVT interleaved boost converter is presented in this paper. For a typical PV module, the output voltage is relatively low. So the high voltage gain is obligatory to realize the grid-connected function. The proposed PV system employs a ZVT interleaved boost converter with an active-clamp circuit as the first power processing stage,...
We present an architecture level low-power design technique called divide and concatenate for universal hash functions based on the following observations. (1) The power consumption of a w-bit array multiplier and associated universal hash data path decreases as O(w4) if its clock rate remains constant. (2) Two universal hash functions are equivalent if they have the same collision probability property...
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