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The Game Selection Model for the Payoff Strategy Optimization of Mobile CrowdSensing Task
( Guosheng Zhao ),( Dongmei Liu ),( Jian Wang ) 한국인터넷정보학회 2021 KSII Transactions on Internet and Information Syst Vol.15 No.4
The payoff game between task publishers and users in the mobile crowdsensing environment is a hot topic of research. A optimal payoff selection model based on stochastic evolutionary game is proposed. Firstly, the process of payoff optimization selection is modeled as a task publisher-user stochastic evolutionary game model. Secondly, the low-quality data is identified by the data quality evaluation algorithm, which improves the fitness of perceptual task matching target users, so that task publishers and users can obtain the optimal payoff at the current moment. Finally, by solving the stability strategy and analyzing the stability of the model, the optimal payoff strategy is obtained under different intensity of random interference and different initial state. The simulation results show that, in the aspect of data quality evaluation, compared with BP detection method and SVM detection method, the accuracy of anomaly data detection of the proposed model is improved by 8.1% and 0.5% respectively, and the accuracy of data classification is improved by 59.2% and 32.2% respectively. In the aspect of the optimal payoff strategy selection, it is verified that the proposed model can reasonably select the payoff strategy.
Sum-Rate Performance of A NOMA-based Two-Way Relay Approach for A Two-User Cellular Network
( Guosheng Li ) 한국인터넷정보학회 2021 KSII Transactions on Internet and Information Syst Vol.15 No.5
This paper considers a cellular two-way relay network with one base station (BS), one relay station (RS), and two users. The two users are far from the BS and no direct links exist, and the two users exchange messages with the BS via the RS. A non-orthogonal multiple access (NOMA) and network coding (NC)-based decode-and-forward (DF) two-way relaying (TWR) scheme TWR-NOMA-NC is proposed, which is able to reduce the number of channel-uses to three from four in conventional time-division multiple access (TDMA) based TWR approaches. The achievable sum-rate performance of the proposed approach is analyzed, and a closed-form expression for the sum-rate upper bound is derived. Numerical results show that the analytical sum-rate upper bound is tight, and the proposed TWR-NOMA-NC scheme significantly outperforms the TDMA-based TWR and NOMA-based one-way relaying counterparts.
Guosheng Li,Jiawei Yang,Wenjie Wang,Zixuan Zhang,Weihua Zhang,Zeping Wu 대한기계학회 2022 JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY Vol.36 No.8
This paper proposes an enhanced augmented radial basis function (eARBF) metamodel combining radial basis function and polynomial chaos expansions for global sensitivity analysis. First, the conditions required for the augmented radial basis function are constructed from the perspective of variance decomposition, after which the analytical expressions of the Sobol’ indices are deduced. To improve the generalization performance of ARBF, an anisotropic technique is proposed based on the local density of sample points. Furthermore, the recursive evolution LHD and efficient K-fold cross-validation method are adopted to reduce computational efforts. Five cases are presented to demonstrate the performance of the proposed approach. In all cases, eARBF yields satisfactory results with lower computational effort. The results indicate that the approach proposed in this paper is promising for GSA of engineering problems.
Optimal Power Allocation for NOMA-based Cellular Two-Way Relaying
Guosheng Li 한국인터넷정보학회 2023 KSII Transactions on Internet and Information Syst Vol.17 No.1
This paper proposes a non-orthogonal multiple access (NOMA) based low-complexity relaying approach for multiuser cellular two-way relay channels (CTWRCs). In the proposed scheme, the relay detects the signal using successive interference cancellation (SIC) and re-generates the transmit signal with zero-forcing (ZF) transmit precoding. The achievable data rates of the NOMA-based multiuser two-way relaying (TWR) approach is analyzed. We further study the power allocation among different data streams to maximize the weighted sum-rate (WSR). We re-form the resultant non-convex problem into a standard monotonic program. Then, we design a polyblock outer approximation algorithm to sovle the WSR problem.The proposed optimal power allocation algorithm converges fast and it is shown that the NOMA-TWR-OPA scheme outperforms a NOMA benchmark scheme and conventional TWR schemes.
A Spectral Efficient NOMA-based Two-Way Relaying Scheme for Wireless Networks with Two Relays
( Guosheng Li ) 한국인터넷정보학회 2021 KSII Transactions on Internet and Information Syst Vol.15 No.1
This paper proposes a novel two-way relaying (TWR) approach for a two-relay wireless network based on non-orthogonal multiple access (NOMA), where two terminals exchange messages with a cellular base station (BS) via two intermediate relay stations (RSs). We propose a NOMA-based TWR approach with two relaying schemes, i.e., amplify-and-forward (AF) and decode-and-forward (DF), referred to as NOMA-AF and NOMA-DF. The sum-rate performance of our proposed NOMA-AF and NOMA-DF is analyzed. A closed-form sum-rate upper bound for the NOMA-AF is obtained, and the exact ergodic sum-rate of NOMA-DF is also derived. The asymptotic sum-rate of NOMA-AF and NOMA-DF is also analyzed. Simulation results show that the proposed scheme outperforms conventional orthogonal multiple access based transmission schemes. It is also shown that increasing the transmit power budget of the relays only cannot always improve the sum-rates.
NEW ENVIRONMENT FOR DEVELOPMENT OF NGOS IN CHINA
Deng Guosheng 연세대학교 동서문제연구원 2000 Global economic review Vol.29 No.4
Since 1978, great changes have taken place in the environment for the development of NGOs in China. From a macroscopic perspective, China's transformation process in the economic, political and social systems, has been progressing successively. The transformation process has broken the traditional structure of the Government's monopolization of resources and the strictly controlled private action space. The reforms have restructured the relationship between the Government and the market society, and thus provided an opportunity for the existence and development of all kinds of NGOs in China. In addition, China's entry into the WTO and current trends towards globalization also has promoted the development of NGOs in China.
Modeling of normal stiffness of mechanical joint based on anisotropic fractal theory
Wan Sun,Guosheng Lan,Xueliang Zhang 대한기계학회 2023 JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY Vol.37 No.8
An idealized model of elliptical asperities was constructed by combining the geometric features of asperities on rough surfaces with the bivariate Weierstrass-Mandelbrot function for junction surfaces with anisotropic fractal characteristics. Based on the Hertz contact theory, the elastic and plastic contact properties of elliptical asperities were studied. It was assumed that the contact point area distribution, eccentricity distribution, and angle distribution of the mechanical joint are independent of each other. According to probability theory and the area size distribution function of the contact point, the three-dimensional joint distribution density functions of the area distribution, eccentricity distribution and angle distribution of the contact point were obtained. By extending the contact characteristics of a single asperity to the entire mechanical joint, a normal contact stiffness model of the mechanical joint was established. The influence of fractal parameters and material parameters on the normal contact stiffness of the mechanical joint was discussed by numerical simulation. Finally, the validity of the model was verified by comparing with the classical model and experimental data.
Haifei Yang,Guosheng Chen,Jun Cheng,Yanyan Liu,Li-Fen Hu,Ying Ye,Jia-Bin Li 대한진단검사의학회 2014 Annals of Laboratory Medicine Vol.34 No.6
Sir, Serratia marcescens , once considered to be an innocuous and non-pathogenic organism, is now an important cause of hospital- acquired infections. This organism is associated with respiratory tract infections, urinary tract infections, septicemia, meningitis, and wound infections [1, 2]. S. marcescens infections are difficult to treat because of high resistance to a wide variety of antibiotics, including cephalosporins, fluoroquinolones, and aztreonam [2].