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Han B.,Hainan Software Profession Institute | Li J.,Hainan University | Liao J.,Hainan University
Chemical Engineering Transactions | Year: 2015

Glucose sensors detection is a common method for glucose detection. Organic electrochemical transistors (OECTs) are considered to highly sensitive glucose sensors. The sensors show linear range from 0.1 μM to 100 μM, and its detection limit is about 0.1 μM. In addition, its sensing mechanism is discussed in detail. Glucose detection results show that the devices are sensitive to the gate voltage changes caused by the glucose enzymatic reaction. A glucose sensor detection system based on high-performance OECT-based glucose sensors is proposed. It is expected that the OECT devices have potential application on the low-cost and disposable glucose detection. Copyright © 2015, AIDIC Servizi S.r.l. Source

Han B.,Hainan University | Han B.,Hainan Software Profession Institute | Li J.,Hainan University
Cybernetics and Information Technologies | Year: 2016

Medical volume data containing patient information is often faced with various attacks in the transmission process. In order to enhance the medical information system security, and effectively solve the problem of medical volume data protection, a new zero-watermarking algorithm is proposed in the paper. The new zero-watermarking algorithm takes advantage of three-dimensional discrete wavelet transform multi-resolution analysis characteristics of space and time, three-dimensional discrete cosine transform properties, and differences hashing robust characteristic. In order to enhance watermarking algorithm security, Legendre chaotic neural network is used for scrambling original watermark image. The medical volume data is made by three-dimensional discrete wavelet transform, three-dimensional discrete cosine transform and three-dimensional discrete inverse cosine transform r to obtain the medical volume data feature matrix (4×5×4), which is converted to 64-bit binary feature sequence through difference hashing algorithm. The 64-bit binary feature sequence is used to construct the zero-watermarking. The experimental results prove that the new zero-watermarking has favorable security and robustness resisting various attacks. Therefore, the new zero-watermarking algorithm is more applicable to protect medical volume data. Source

Meng L.-L.,Yanshan University | Sun C.-D.,Yanshan University | Han B.-R.,Hainan Software Profession Institute
Dianli Xitong Baohu yu Kongzhi/Power System Protection and Control | Year: 2012

In this paper, a new algorithm based on least square method and FastICA algorithm is proposed to overcome the difficulty in inter-harmonic detection in power system. The algorithm combines FFT and least-squares method to determine the fundamental and harmonic parameters. And it constructs the appropriate virtual observed signals and separates the fundamental, harmonics and some easy detected inter-harmonics with the help of ICA algorithm. Then according to the estimated parameters it can adjust the observed signal matrix and detect remaining small amplitude inter-harmonic signals. The simulation results show that the algorithm can accurately detect the small amplitude inter-harmonics near fundamental and harmonic without prior knowledge and eliminating fundamental and harmonic components in the case of less real-time demand. And this algorithm has high obvious superiority with ICA algorithm. Source

Bao-Tai W.,Hainan Software Profession Institute | Rui Z.,Chongqing University of Posts and Telecommunications
2nd International Conference on Future Networks, ICFN 2010 | Year: 2010

There may exist multi-path between the source node and the destination node in asymmetric wireless networks. By calculating the throughput, this paper proposes a new method which determines whether to use different paths to transmit TCP data segment and ACK segment. This method uses bandwidth as criteria for judging, and selects the path having lager bandwidth to forward ACK. Simulation result shows that the proposed method can improve the throughput effectively and advance TCP performance. © 2010 IEEE. Source

Han B.,Hainan Software Profession Institute | Li J.B.,Hainan University
Applied Mechanics and Materials | Year: 2013

Base on improved particle swarm algorithm, this paper proposes a linear decreasing inertia weight particle swarm algorithm and error back propagation algorithm based on hybrid algorithm combining. The linear decreasing inertia weight particle swarm algorithm and momentum-adaptive learning rate BP algorithm interchangeably adjust the network weights, so that the two algorithms are complementary. It gives full play to the PSO's global optimization ability and the BP algorithm local search advantage, to overcome the slow convergence speed and easily falling into local weight problems. Simulation results show that this diagnostic method can be used for tolerance analog circuit fault diagnosis, with a high convergence rate and diagnostic accuracy. © (2013) Trans Tech Publications, Switzerland. Source

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