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Lei M.,University of Sichuan | Nie R.,University of Sichuan | Liu Y.,Sichuan Water Conservancy Vocational College | Liu X.,University of Sichuan
Sichuan Daxue Xuebao (Gongcheng Kexue Ban)/Journal of Sichuan University (Engineering Science Edition) | Year: 2014

The flume experiments of clear water scouring comprising different gradations of non-uniform sediment were conducted on the basis of the previous researches about the scour depth of armoring layer. The characteristics of the equilibrium scour-depth under clear-water scouring conditions were investigated. A simplified and practical formula was proposed to calculate the scour depth of armoring layer by means of establishing the relationship between the thickness of armoring protection layer and that of movable bed surface layer in a generalized model for the armoring structure. The method was of adequate accuracy to agree the experiment data well. Source


Liu X.,Sichuan Water Conservancy Vocational College
Metallurgical and Mining Industry | Year: 2015

In this paper, the author researches on the identity-related services and key technology application in Internet of Things (IoT). The paper summed up the characteristics of the Internet of Things (IOT) applications and current application situation from the perspectives of IOT application. IOT protocols and research work of organization are analyzed from the technical level which provides help for IOT architecture. This paper also focuses on several key technologies for the IOT applications, which includes the IOT service framework based on semantic, semantic annotation method for web service discovery, the context model and reasoning model based on ontology, the composition service of IOT and QoS, the design and implementation of smart middleware. Source


Xu L.-J.,Hydrochina Huadong Engineering Corporation | Xue Y.,Hydrochina Huadong Engineering Corporation | Zhang S.,Sichuan Water Conservancy Vocational College
Shiyan Liuti Lixue/Journal of Experiments in Fluid Mechanics | Year: 2013

The process of bubble formation is involved in a lot of gas-liquid reactors and process equipment. It is therefore important to understand bubble formation process and to develop computational models for the accurate prediction of the bubble formation characteristics in different bubbling regimes. Numerical simulation of bubble formation cycle on orifice were carried out using the combined level set and volume-of-fluid method and the predictions were experimentally validated, Effects of gas flow rate and orifice diameter on the bubbling regimes were discussed. Based on the simulation data and experimental data on the transition of bubble formation regimes, Froude and Bond numbers, the inlet gas velocity at orifice decreases with increase in the orifice diameter is presented. Source


Gong W.,China University of Petroleum - East China | Zhang W.,China University of Petroleum - East China | Gonzalez J.,Autonomous University of Barcelona | Ren Y.,China University of Petroleum - East China | Li Z.,Sichuan Water Conservancy Vocational College
International Journal of Distributed Sensor Networks | Year: 2015

Bilinear models have been successfully applied to separate two factors, for example, pose variances and different identities in face recognition problems. Asymmetric model is a type of bilinear model which models a system in the most concise way. But seldom there are works exploring the applications of asymmetric bilinear model on face recognition problem with illumination changes. In this work, we propose enhanced asymmetric model for illumination-robust face recognition. Instead of initializing the factor probabilities randomly, we initialize them with nearest neighbor method and optimize them for the test data. Above that, we update the factor model to be identified. We validate the proposed method on a designed data sample and extended Yale B dataset. The experiment results show that the enhanced asymmetric models give promising results and good recognition accuracies. © 2015 Wenjuan Gong et al. Source


Lou Y.H.,Sichuan Rural Irrigation and Water Conservancy Bureau | Lou Y.H.,China Agricultural University | Cui N.B.,University of Sichuan | Yang H.X.,University of Sichuan | Yang H.X.,Sichuan Water Conservancy Vocational College
Applied Mechanics and Materials | Year: 2014

Evaluation of water-saving development level of irrigation management level is an important foundation to make the water-saving and irrigation policy, and improve irrigation management. This paper established a comprehensive evaluation system for the developing level of water-saving and irrigation management after comprehensively analysis of main contents of irrigation management. It include 4 secondary level indicators and 16 third-level indicators, and build a comprehensive evaluation model. Further more, entropy method and gradation analysis method were introduced to calculate the combination weight of each evaluation indices, which enhance the scientific in weight calculation, and a comprehensive evaluating model for irrigation management and water-saving developing level was established on the basis of it. The comprehensive evaluation of irrigation management and water-saving developing for Sichuan Province and 21 other regions was done by this model, and the results are accord with Sichuan Province's actual situation of the irrigation management and water-saving developing. Therefore, the model of comprehensive evaluation for irrigation management and water-saving development level has a relative strong practicability, which can offer scientific guidance for irrigation management and water-saving development in different regions. © (2014) Trans Tech Publications, Switzerland. Source

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