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Liu J.,Shanxi Polytechnic College | Zhao B.,Taiyuan University of Technology
Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics) | Year: 2011

This paper analyses the selection of the step-size factor in a new variable step-size constant modulus algorithm (CMA) based on mean square error (MSE) and determines the value range of the step-size factor by computer simulation, which establishes the solid foundation to the convergence superiority of the new algorithm by computer simulation. © 2011 Springer-Verlag.


Ma H.,Shanxi University | Ma H.,Shanxi Polytechnic College | Wang L.,Shanxi University | Liu Z.,Shanxi University | Guo Y.,Shanxi University
International Journal of Environmental Analytical Chemistry | Year: 2016

In this work, ionic liquid–graphene nanosheets (IL–GNs) were synthesised and used as an enhanced material for sensitive detection of methyl parathion (MP) by electrochemical method. IL–GNs were characterised by UV–Vis spectroscopy, transmission electron microscopy (TEM), X-ray photo-electron spectroscopy (XPS), Fourier transform Infrared (FT-IR) spectroscopy and Raman spectroscopy, which confirmed that IL was successfully covered on the surface of GNs. Significantly, due to the coupling of excellent properties of GNs and IL, the IL–GNs-modified glassy carbon electrode (IL–GNs/GCE) showed higher signals for MP response than the GNs/GCE and bare GCE. At the IL–GNs/GCE, the peak currents increase linearly with the concentration of MP in the range of 5.3 ng/mL to 2.6 μg/mL with the detection limit of 1.1 ng/mL, which was better than other enzyme-based and enzymeless sensors. The IL–GNs-based electrochemical sensor was also successfully demonstrated for the detection of water sample with satisfactory results. Furthermore, the proposed electrochemical sensor exhibited satisfied stability and reproducibility. The simple sensing platform can be extended to detect other organophosphate pesticide. © 2015 Taylor & Francis.


Zhao B.,Taiyuan University of Technology | Liu J.,Shanxi Polytechnic College
Journal of Computational Information Systems | Year: 2011

The constant modulus algorithm (CMA) is a stochastic gradient adaptive algorithm that results from minimizing a no-quadratic cost function of the equalizer coefficience involving higher order statistics. The variable step-size constant modulus algorithm (CMA) solves the contradiction between convergence speed and convergence precision of the fixed step-size CMA. Among many variable step-size constant modulus algorithms, a common method is using MSE to control the step-size variation. This paper studies the influence of MSE on tracking channel and anti-interference performance of an improved variable step-size constant modulus algorithm. The computer simulation result is in good agreement with theoretical analysis. © 2011 Binary Information Press.


Chen L.,Shanxi Polytechnic College
Communications in Computer and Information Science | Year: 2011

Violating-traffic statistical analysis is an important part of railway cargo traffic information statistics. This paper uses "rail freight traffic information statistical system" which is one of three main modules in internet application. Violating-traffic statistic methods monitor the implementation of full-flow and improve the level of information. © 2011 Springer-Verlag.


Luo G.-L.,Shanxi Polytechnic College
Proceedings - 2012 International Conference on Computing, Measurement, Control and Sensor Network, CMCSN 2012 | Year: 2012

In this paper, the Active Power Filter direct current side voltage control method has been improved. On the basis of the traditional PID, it proposes a complex controller with a combination of fuzzy control and PID control in order to improve the control system's performance. Through MATLAB simulation, the correctness and feasibility of the method are verified. © 2012 IEEE.


Wei Q.,Beijing University of Technology | He J.,Beijing University of Technology | Zhang X.,Liaoning University of Technology | Jia J.,Shanxi Polytechnic College
Journal of Convergence Information Technology | Year: 2011

Wireless mesh networks are widely considered as a vision for the future of wireless mobile networks. In this paper, we present a deeply protected hybrid key exchange model in wireless mesh networks named DPHKE. The model uses signcryption and encryption to deeply protect the shared-key's secret material and uses keyed one-way hash function to realize key source authentication. Based on the model, we perform implementations using discrete logarithm based signcryption and elliptic curve based signcryption and show that our model can lower the computational cost and the communication overhead by at least 12.5% and 33.3%, respectively, compared to DKEUTS, SAKE and EC-SAKE.


Zhang Y.,Shanxi Polytechnic College
Journal of Computational and Theoretical Nanoscience | Year: 2016

In the real-world pattern recognition applications, the feature vectors and the classifier are two important factors for improving the classification accuracy. This paper presents a new approach that is based on the modified artificial bee colony (ABC) algorithm and the support vector machine (SVM) classifier to select the optimal feature subset. To improve the convergence of ABC, the modified ABC algorithm (named OGR-ABC algorithm) introduces three modified strategies including opposite initialization, global optimum based search equations and ranking based selection mechanism. Several UCI datasets have been used to evaluate the performance of feature selection by using the proposed OGR-ABC algorithm and SVM. The experiment results show that the proposed approach can achieve higher classification accuracy and more appropriate feature subset than the original ABC, genetic algorithm, and particle swarm optimization. © 2016 American Scientific Publishers All rights reserved.


Cai H.,Shanxi Polytechnic College | Cai H.,Shanxi University | Chen J.,Shanxi Polytechnic College
Guangzi Xuebao/Acta Photonica Sinica | Year: 2011

An efficient entanglement distribution protocol was proposed using a qudit (4-dimensional space) as a separable mediating ancilla. Two qubits were used to describe a qudit in order to simplify the description. Firstly, both of the two ancilla qubits and the two distant qubits (a and b) were formed into a four-qubit unlockable bound entangled state, called the Smolin state. Then, a projective measurement in the Bell basis was performed on the two ancilla qubits and the measurement results was delivered to a and b. Based on the measurement results, the qubits a and b can be converted into a standard singlet state locally. At any stage of the protocol, the two ancilla qubits was always separable from the subsystem (a and b). This scheme provides an effective way to distribute the maximally entangled states by separable states, and presents a concise formalism to describe and understand this physical process.


Sun S.,Shanxi Polytechnic College | Yu Y.,Shanxi Polytechnic College
Applied Mechanics and Materials | Year: 2012

The paper brings information on grinding cement with high proportions of slag in the presence of amine alcohols grinding aids. Grind respectively blended cement with 20%, 50%, and 80% granulated blast furnace slag and analyse the evolution of the specific surface area at various grinding times and grindability. Results show that the specific surface area of belended cement depends on the content of slag and the type and ratio of grinding aid, and grindalility of the cement is also affected by grinding aids. © (2012) Trans Tech Publications.


PubMed | Shanxi Polytechnic College, Shanxi Guohui Optoelectronic Technology CO., Umeå University and Shanxi University
Type: Journal Article | Journal: Sensors (Basel, Switzerland) | Year: 2016

A novel, intensity-stabilized, fast-scanned, direct absorption spectroscopy (IS-FS-DAS) instrumentation, based on a distributed feedback (DFB) diode laser, is developed. A fiber-coupled polarization rotator and a fiber-coupled polarizer are used to stabilize the intensity of the laser, which significantly reduces its relative intensity noise (RIN). The influence of white noise is reduced by fast scanning over the spectral feature (at 1 kHz), followed by averaging. By combining these two noise-reducing techniques, it is demonstrated that direct absorption spectroscopy (DAS) can be swiftly performed down to a limit of detection (LOD) (1) of 4 10

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