Liaoning University of Petroleum and Chemical Technology is a university in Fushun, Liaoning, People's Republic of China under the provincial government. It was first founded in 1950 at Dalian, which is the first petroleum and chemical technology university of People's Republic of China. Then at 1953, it moved to Fushun. During 59 years from it established, more than 60,000 students graduated, most of which have already become managers at various levels and core technicists in Chinese petroleum and related companies. There are 13 academicians of Chinese Academy of Science and Chinese Academy of Engineering. Its engineering is relatively strong in China, especially in petroleum related areas. Wikipedia.
Jiang S.-F.,Fuzhou University |
Fu C.,Fuzhou University |
Fu C.,Liaoning University of Petroleum and Chemical Technology |
Zhang C.,Northeastern University China
Advances in Engineering Software | Year: 2011
This paper addresses a novel hybrid data-fusion system for damage detection by integrating the data fusion technique, probabilistic neural network (PNN) models and measured modal data. The hybrid system proposed consists of three models, i.e. a feature-level fusion model, a decision-level fusion model and a single PNN classifier model without data fusion. Underlying this system is the idea that we can choose any of these models for damage detection under different circumstances, i.e. the feature-level model is preferable to other models when enormous data are made available through multi-sensors, whereas the confidence level for each of multi-sensors must be determined (as a prerequisite) before the adoption of the decision-level model, and lastly, the single model is applicable only when data collected is somehow limited as in the cases when few sensors have been installed or are known to be functioning properly. The hybrid system is suitable for damage detection and identification of a complex structure, especially when a huge volume of measured data, often with uncertainties, are involved, such as the data available from a large-scale structural health monitoring system. The numerical simulations conducted by applying the proposed system to detect both single- and multi-damage patterns of a 7-storey steel frame show that the hybrid data-fusion system cannot only reliably identify damage with different noise levels, but also have excellent anti-noise capability and robustness. © 2011 Elsevier Ltd. All rights reserved.
Shi X.,Liaoning University of Petroleum and Chemical Technology |
Wei G.,Northeastern University China |
Wei G.,CAS Shenyang International Center for Materials Physics
Physics Letters, Section A: General, Atomic and Solid State Physics | Year: 2010
As an analytical method, the effective-field theory (EFT) is used to study an Ising spin system in a transverse magnetic field under a time oscillating longitudinal field. The effective-field equations of motion of the average magnetization are given for the square lattice (Z = 4). In the longitudinal field amplitude h0 / Z J-transverse field Γ / Z J plane, the phase boundary separating the dynamic ordered and the disordered phase also has been drawn, and there is no dynamical tricritical point on the dynamic phase transition boundary. The dependence of the critical temperature on the transverse field is calculated and phase diagrams are presented. We also make the compare results of EFT with that given by using the mean field theory (MFT). © 2010 Elsevier B.V. All rights reserved.
Zhang L.,Jilin University |
Zhang L.,Liaoning University of Petroleum and Chemical Technology |
He T.,Jilin University
Journal of Power Sources | Year: 2011
Double-perovskite Sr2-xSmxMgMoO6-δ (SSMM, 0 ≤ x ≤ 0.8) is investigated as a possible anode material for solid-oxide fuel cells on La0.9Sr0.1Ga 0.8Mg0.2O3-δ (LSGM) electrolytes. Single-phase SSMM samples with 0 ≤ x ≤ 0.4 are prepared. At x ≥ 0.6, a small amount of SrMoO4 and Sm2O3 impurities are observed. The Mg/Mo ordering in SSMM decreases with increasing Sm content. Substitution of Sm for Sr significantly improves the electrical conductivity of SSMM. At x = 0.6, the sample yields the highest conductivity, with values reaching 16 S cm-1 in H2 at 800 °C. The maximum power densities of single cells achieved with x = 0.0, 0.2, 0.4, 0.6, and 0.8 anodes on a 300 μm-thick LSGM electrolyte are 693, 770, 860, 907, and 672 mW cm -2, respectively, in H2 at 850 °C. The SSMM sample with x = 0.4 is considered as the best anode candidate because of the impurity formation seen in x ≥ 0.6 samples. The x = 0.4 sample not only has a thermal-expansion coefficient closer to that of the LSGM electrolyte but also exhibits good electrochemical performance and stability in commercial city gas containing H2S, where the maximum power density achieved is 726 mW cm-2 at 850 °C. © 2011 Elsevier B.V. All rights reserved.
Zhang R.,Hangzhou Dianzi University |
Li P.,Liaoning University of Petroleum and Chemical Technology |
Xue A.,Hangzhou Dianzi University |
Jiang A.,Hangzhou Dianzi University |
Wang S.,Zhejiang University
Journal of Process Control | Year: 2010
This paper describes the application of a linear iterative design of nonlinear predictive functional control for chamber pressure of industrial coke furnace. The control target is to maintain the chamber pressure of a coke furnace within a set range while rejecting the effect of disturbances (mainly the coke removing process and the switch of coke towers).The proposed control is easy to implement, as it selects a simple structure and a linear iterative approach instead of nonlinear control schemes to improve control performance in such a way that results compared with traditional PID controllers are improved. Application of industrial plant demonstrates the efficiency of the method. © 2010 Elsevier Ltd. All rights reserved.
Shi X.,Northeastern University China |
Shi X.,Liaoning University of Petroleum and Chemical Technology |
Qi Y.,Northeastern University China
Physica A: Statistical Mechanics and its Applications | Year: 2015
Abstract The effective-field theory with correlations based on Glauber-type stochastic dynamic is used to study the dynamic compensation behavior of the mixed spin-1 and spin-3/2 ferrimagnetic Ising model. The system is a layered honeycomb structure in which two kinds of spins (spin-1 and spin-3/2) occupy sites alternately. This is related to the experimental works of a molecular-based magnetic multilayer film, AMIIFeII(C2O4)3(A = N(n-CnH2n+1)4,MII=Mn,Fe). The system is in the presence of a sinusoidal oscillating magnetic field and the Glauber dynamic is used to describe the time evolution of the system. The effects of the interlayer coupling and a crystal-field constant of the spin-1 sublattice on the compensation temperature are investigated. Dynamic phase diagrams, including the compensation points are presented. Besides second-order phase transition, lines of first-order phase transition, the dynamic tricritical point, the dynamic zero-temperature critical point and the multicritical point are found. The dynamic tricritical point, the dynamic compensation point and the non-magnetic phase predicted by the mean-field theory are confirmed by the effective-field theory. © 2015 Elsevier B.V. All rights reserved.