Chongqing Jiaotong University
Xuefu, China

Chongqing Jiaotong University was founded in 1951 as a university with engineering being the primary focus. The university also teaches management, natural science, and humanities. Situated in the Nanan District of the Chongqing Municipality, China, the university has a campus occupying an area of over 1,600 mu with a floor space of 600,000 square meters. Wikipedia.

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Zeng X.-X.,Chongqing Jiaotong University | Liu W.-B.,Beijing Normal University
Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics | Year: 2013

In the spirit of AdS/CFT correspondence, we study the thermalization of a dual conformal field theory to Gauss-Bonnet gravity by modeling a thin-shell of dust that interpolates between a pure AdS and a Gauss-Bonnet AdS black brane. The renormalized geodesic length and minimal area surface, which in the dual conformal field theory correspond to two-point correlation function and expectation value of Wilson loop, are investigated respectively as thermalization probes. The result shows that as the Gauss-Bonnet coefficient increases, the thermalization time decreases for both the thermalization probes, which can also be confirmed by studying the motion profile of the geodesic and minimal area surface. In addition, for both the renormalized geodesic length and minimal area surface, there is an overlapped region for a fixed boundary separation, which implies that the Gauss-Bonnet coupling constant has little effect on the thermalization probes there. © 2013 Elsevier B.V.

Yang D.,Chongqing Jiaotong University
Construction and Building Materials | Year: 2017

Moisture damage is one of the major problems in asphalt pavements. The pore water in asphalt mixture pavements is easily evolved into excess pore water pressure under the action of the traffic load. According to the reverse fluid-solid coupling theory, the excess pore pressure of water damages the asphalt film or mastic on the aggregate surface, which results in splitting at the contact points among aggregates. Further, this excess pore water pressure scours, emulsifies, and strips the asphalt film surrounding the aggregates. Therefore, many problems occur in asphalt pavements. In this study, the excess pore water pressure of the compacted asphalt mixture was investigated by dynamic triaxial tests (DTT). The results show that with the increase of loading time, the excess pore water pressure has three typical stages. At the same time, the deviator stress and loading frequency both influence the peak value of the excess pore water pressure. The higher the deviator stress is, the greater the peak value of the excess pore water pressure is. Similarly, the bigger the loading frequency is, the greater the peak value of the excess pore water pressure is. These conclusions show that overloaded vehicles and high traffic capacity are the external influential factors of moisture-induced damage to asphalt mixtures. © 2017

Liu H.-C.,Tokyo Institute of Technology | Liu L.,Tongji University | Liu N.,Chongqing Jiaotong University
Expert Systems with Applications | Year: 2013

Failure mode and effects analysis (FMEA) is a risk assessment tool that mitigates potential failures in systems, processes, designs or services and has been used in a wide range of industries. The conventional risk priority number (RPN) method has been criticized to have many deficiencies and various risk priority models have been proposed in the literature to enhance the performance of FMEA. However, there has been no literature review on this topic. In this study, we reviewed 75 FMEA papers published between 1992 and 2012 in the international journals and categorized them according to the approaches used to overcome the limitations of the conventional RPN method. The intention of this review is to address the following three questions: (i) Which shortcomings attract the most attention? (ii) Which approaches are the most popular? (iii) Is there any inadequacy of the approaches? The answers to these questions will give an indication of current trends in research and the best direction for future research in order to further address the known deficiencies associated with the traditional FMEA. © 2012 Elsevier Ltd. All rights reserved.

Song Q.,Chongqing Jiaotong University
Neurocomputing | Year: 2011

In this paper, the problems of global dissipativity and global exponential dissipativity are investigated for discrete-time stochastic neural networks with time-varying delays and general activation functions. By constructing appropriate Lyapunov-Krasovskii functionals and employing stochastic analysis technique, several new delay-dependent criteria for checking the global dissipativity and global exponential dissipativity of the addressed neural networks are established in linear matrix inequalities (LMIs). Furthermore, when the parameter uncertainties appear in the discrete-time stochastic neural networks with time-varying delays, the delay-dependent robust dissipativity criteria are also presented. Two examples are given to show the effectiveness and less conservatism of the proposed criteria. © 2010 Elsevier B.V.

Zeng W.,Chongqing Jiaotong University
BMC Health Services Research | Year: 2013

Background: Developed countries use generic competition to contain pharmaceutical expenditure. China, as a developing and transitional country, has not yet deemed an increase in the use of generic products as important; otherwise, much effort has been made to decrease the drug prices. This paper aims to explore dynamically the price and use comparison of generic and originator drugs in China, and estimate the potential savings of patients from switching originator drugs to generics. Methods. A typical hospital in Chongqing, China, was selected to examine the price and use comparisons of 12 cardiovascular drugs from 2006 to 2011. Results: The market share of the 12 generic medicines studied in this paper was 34.37% for volume and 31.33% for value in the second half of 2011. The price ratio of generic to originator drugs was between 0.34 and 0.98, and the volume price index of originators to generics was 1.63. The potential savings of patients from switching originator drugs to generics is 65%. Conclusion: The market share of the generics was lowering and the weighted mean price kept increasing in face of the strict price control. Under the background of hospitals both prescribing and dispensing medicines, China's comprehensive healthcare policy makers should take measures from supply and demand sides to promote the consumption of generic medicines. © 2013 Zeng; licensee BioMed Central Ltd.

Zhou B.,Chongqing Jiaotong University | Song Q.,Chongqing Jiaotong University
IEEE Transactions on Neural Networks and Learning Systems | Year: 2013

In this paper, the boundedness and complete stability of complex-valued neural networks (CVNNs) with time delay are studied. Some conditions to guarantee the boundedness of the CVNNs are derived using local inhibition. Moreover, under the boundedness conditions, a compact set that globally attracts all the trajectories of the network is also given. Additionally, several conditions in terms of real-valued linear matrix inequalities (LMIs) for complete stability of the CVNNs are established via the energy minimization method and the approach that converts the complex-valued LMIs to real-valued ones. Examples with simulation results are given to show the effectiveness of the theoretical analysis. © 2012 IEEE.

Yuan X.-Y.,Chongqing Jiaotong University
Wuji Cailiao Xuebao/Journal of Inorganic Materials | Year: 2011

Graphene has attracted much interest in recent years due to its unique and outstanding properties. Different routes to prepare graphene have been developed and achieved. Preparation methods of graphene used in recent years are intensively introduced, including micromechanical cleavage, chemical vapor deposition, liquid/gas-phase-based exfoliation of graphite, epitaxial growth on an insulator, chemical reduction of exfoliated graphene oxide, etc. And their advantages and shortcomings are further discussed in detail. The preparations of graphene are also prospected.

Dong S.,Chongqing Jiaotong University | Luo T.,Chongqing Jiaotong University
Measurement: Journal of the International Measurement Confederation | Year: 2013

Bearing degradation process prediction is extremely important in industry. This paper proposed a new method to achieve bearing degradation prediction based on principal component analysis (PCA) and optimized LS-SVM method. Firstly, the time domain, frequency domain, time-frequency domain features extraction methods are employed to extract the original features from the mass vibration signals. However, the extracted original features still with high dimensional and include superfluous information, the multi-features fusion technique PCA is used to merge the original features and reduce the dimension, the typical sensitive features are extracted. Then, based on the extracted features, the LS-SVM model is constructed and trained for bearing degradation process prediction. The pseudo nearest neighbor point method is used to determine the input number of the model. The particle swarm optimization (PSO) is used to selected the LS-SVM parameters. An accelerated bearing run-to-failure experiment was carried out, the results proved the effectiveness of the methodology. © 2013 Elsevier Ltd. All rights reserved.

Lu Z.,Chongqing Jiaotong University | Wang H.,City University of Hong Kong
CrystEngComm | Year: 2014

We report a facile strategy to coaxially grow compact SnO2 over-layers on multiwall carbon nanotubes (MWCNTs) with hierarchical structures and controlled thickness via a hydrothermal method, using NaF as a morphology controlling and directing agent. The thickness of the SnO2 over-layers can be controlled from several tens of nanometers down to several nanometers by adjusting the ratio of carbon nanotubes to Sn precursor. When applied as anode materials for lithium ion batteries, carbon nanotubes with coaxially grown thin (∼10 nm) SnO2 over-layers showed lithium storage performance with a reversible capacity of 431 mA h g-1 after 50 cycles, which is two times better than that of thick (∼55 nm) SnO 2 over-layers or mixtures of carbon nanotubes and separated SnO 2 nanoparticles. The improved cyclic performance was attributed to reduced agglomeration, enhanced electronic conductivity and released internal strain during the lithium insertion/extraction. © 2014 The Royal Society of Chemistry.

HONG KONG--(BUSINESS WIRE)--#APM--Freetech has officially signed a strategic cooperation agreement with Chongqing Jiaotong University.

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