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Optical and electrical properties of InGaZnON thin films

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Chinese Physics B 2020年第1期29卷 475-481页

作者： Jian Ke Yao fan ye Ping fan Shenzhen Key Laboratory of Advanced Thin Films and Applications College of Physics and EnergyShenzhen UniversityShenzhen 518060China

The substrate temperature(Ts)and N2 partial pressure(PN2)dependent optical and electrical properties of sputtered InGaZnON thin films are *** the increased Ts and PN2,the thin film becomes more crystallized and *** Hall mobility,free carrier concentration(Ne),and electrical conductivity increase with the lowered interfacial potential barrier during crystal *** photoluminescence(PL)intensity decreases with the increased *** band gap(Eg)narrows and the linear refractive index(n1)increases with the increasing concentration of N in the thin *** Stokes shift between the PL peak and absorption edge decreases with *** n1,dispersion energy,average oscillator wavelength,and oscillator length strength all increase with *** single oscillator energy decreases with *** nonlinear refractive index and third order optical susceptibility increase with *** Seebeck coefficient,electron effective mass,mean free path,scattering time,and plasma energy are all Ne dependent.

关键词： InGaZnON thin films linear and nonlinear optical properties Seebeck coefficient electron effective mass

THE SUFFICIENT AND NECESSARY CONDITION OF THE MAJOR STOCHASTIC PREFERENCE RULE IN GROUP DECISION MAKING

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Journal of Systems Science & Complexity 2012年第5期25卷 942-949页

作者： fan ye Naiming DONG Jing LI Zhenjie HONG City College of Wenzhou University School of Mathematics and Information Science Wenzhou University Shanxi University of Finance and Economics

Group decision making problem with stochastic preference is investigated. The authors present four rational conditions for testing group stochastic preference rule, and prove that the com- bination of these four rational conditions is the sufficient and necessary condition of major stochastic preference rule for group stochastic preference rule.

关键词： Group decision making group stochastic preference rule major stochastic preferencerule stochastic preference sufficient and necessary condition.

Sheet Metal Forming Optimization by Using Surrogate Modeling Techniques

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Chinese Journal of Mechanical Engineering 2017年第1期30卷 22-36页

作者： WANG Hu ye fan CHEN Lei LI Enying State Key Laboratory of Advanced Design and Manufacturing for Vehicle Body Hunan UniversityChangsha 410082China Joint Center for Intelligent New Energy Vehicle China School of Logistics Central South University of Forestry and TechnologyChangsha 41004China

Surrogate assisted optimization has been widely applied in sheet metal forming design due to its efficiency. Therefore, to improve the efficiency of design and reduce the product development cycle, it is important for scholars and engineers to have some insight into the performance of each surrogate assisted optimization method and make them more flexible practically. For this purpose, the state-of-the-art surrogate assisted optimizations are investigated. Furthermore, in view of the bottleneck and development of the surrogate assisted optimization and sheet metal forming design, some important issues on the surrogate assisted optimization in support of the sheet metal forming design are analyzed and discussed, involving the description of the sheet metal forming design, off-line and online sampling strategies, space mapping algorithm, high dimensional problems, robust design, some challenges and potential feasible methods. Generally, this paper provides insightful observations into the performance and potential development of these methods in sheet metal forming design.

关键词： surrogate optimization sheet metal forming

Effect of alloying elements on microstructure, mechanical and damping properties of Cr-Mn-Fe-V-Cu high-entropy alloys

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Journal of Materials Science & Technology 2018年第11期34卷 2014-2021页

作者： Ruokang Song fan ye Chenxi Yang Sujun Wu School of Materials Science and Engineering Beihang University (BUAA)

A series of new Cr-Mn-Fe-V-Cu high-entropy alloys were prepared by arc melting and suction *** is found that with the addition of Cu, the structure of the alloys evolved from BCC ＋ BCC1 phases to BCC ＋ FCC phases. With increase of Cu, the volume fraction of the Cu-Mn-rich FCC phase increased, and the morphology of the FCC phase transformed from granular particles to long strips and blocks. Compared with other reported HEAs, the Cr-Mn-Fe-V-Cu HEAs exhibit a good balance between strength and ductility. The CrMn0.3 FeVCu0.06 alloy with granular FCC particles exhibits the highest compressive yield strength（1273 MPa） and excellent ductility（εf= 50.7%）. Quantitative calculations for different strengthening mechanisms demonstrate that dislocation and precipitate strengthening are responsible for high strength of the CrMn0.3 FeVCu0.06 alloy, while the solid solution strengthening effect is very low because of its small atomic-size difference. In addition, the CrMn0.3 FeVCu0.06 alloy exhibits good damping capacity due to its high dislocation and interface damping effects. Therefore, the dislocation density and distribution of FCC phase are the crucial factors for improvement of both mechanical properties and damping capacity of the HEAs.

关键词： High-entropy alloy Phase formation Mechanical properties Damping capacity

A virtual geographic environment for dynamic simulation and analysis of tailings dam failure

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International Journal of Digital Earth 2021年第9期14卷 1194-1212页

作者： Dayu Yu Liyu Tang fan ye Chongcheng Chen Key Laboratory of Spatial Data Mining&Information Sharing Ministry of Education of ChinaFuzhou UniversityFuzhouPeople’s Republic of China National Engineering Research Center of Geospatial Information Technology Fuzhou UniversityFuzhouPeople’s Republic of China School of Remote Sensing and Information Engineering Wuhan UniversityWuhanPeople’s Republic of China

It is of great significance for disaster prevention and mitigation to carry out disaster simulations for dam failure accidents in advance,but at present,there are few professional systems for disaster simulations of tailings *** this paper,we focused on the construction of a virtual geographic environment(VGE)system that provides an effective tool for visualizing the dam-break process of a tailings *** dam-break numerical model of the tailings dam based on computational fluid dynamics(CFD)was integrated into the VGE *** infrastructure of the VGE was supported by a 3-D geographic information system(GIS)with a user-friendly interface for the initiation,visualization,and analysis of the dynamic process of tailings dam *** technologies,including the integration of numerical models,rendering of large-scale scenes,and optimizations of disaster simulation and visualization,were discussed in *** the prototype system,information on the run-out path,travel distance,*** be obtained to visually describe the flow motion released by two dam failure *** simulation results showed that the VGE can be used for the multidimensional,dynamic and interactive visualization of dam-break disasters,and can also be useful for assessing the risk associated with tailings dams.

关键词： Vitrual geographic environment tailings dam break computational fluid dynamics spatiotemporal process simulation visualization analysis

Drag reduction and hairpin packets of the turbulent boundary layer over the superhydrophobic-riblets surface

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Journal of Hydrodynamics 2021年第3期33卷 621-635页

作者： Xin-wei Wang Zi-ye fan Zhan-qi Tang Nan Jiang School of Mechanical Engineering Tianjin UniversityTianjin300354China Tianjin Key Laboratory of Modern Engineering Mechanics Tianjin300354China

This paper presents experimental measurements by the time-resolved particle image velocimetry(TR-PIV)for the turbulent boundary layer(TBL)over the smooth surface,the superhydrophobic(SH)surface,and the superhydrophobic-riblets(SR)surface in an open-surface recirculating water *** Reynolds number based on the wall friction velocity and the thickness of the TBL over the smooth surface is *** SH surface and the SR surface are manufactured by the laser texturing method on the smooth surface and the riblets surface,*** employing the(modified)Clauser method,a superior efficacy of the drag reduction of about 22.1%is obtained on the SR surface,while the drag reduction rate for the SH surface is about 18.7%.Comparing with the SH surface,the declining 2-order statistics in the near-wall region also indicates a significant drag reduction over the SR *** large-scale structure components extracted by the proper orthogonal decomposition are found to generate a majority of the Reynolds shear stress in the region y^(+)>*** strength of the large-scale features over the rough surfaces(SH and SR surfaces)at disparate wall-normal positions is visualized by the Quadrant splitting method and the conditional *** appearance of the large-scale structures such as the hairpin packets characterized by the two-point correlation shows an excellent consistency with the statistics *** hairpin packets over the SH surface seem always smaller and weaker than those over the smooth *** the SR surface,the hairpin packets in the region 0.1≤y/δ<0.3 are the smallest and weakest among those over the three surfaces,while the scale and the strength of the hairpin packets exceed those over the smooth surface in the region 0.3

关键词： Turbulent boundary layer superhydrophobic riblets drag reduction hairpin packets

A pruning algorithm with L_(1/2) regularizer for extreme learning machine

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Journal of Zhejiang University-Science C(Computers and Electronics) 2014年第2期15卷 119-125页

作者： ye-tian fan Wei WU Wen-yu YANG Qin-wei fan Jian WANG School of Mathematical Sciences Dalian University of Technology College of Science Huazhong Agricultural University

Compared with traditional learning methods such as the back propagation(BP)method,extreme learning machine provides much faster learning speed and needs less human intervention,and thus has been widely *** this paper we combine the L1/2regularization method with extreme learning machine to prune extreme learning machine.A variable learning coefcient is employed to prevent too large a learning increment.A numerical experiment demonstrates that a network pruned by L1/2regularization has fewer hidden nodes but provides better performance than both the original network and the network pruned by L2regularization.

关键词： Extreme learning machine(ELM) L1/2 regularizer Network pruning

Evaluation of Lethal Effects of Chlorantraniliprole on Chilo suppressalis and Its Larval Parasitoid, Cotesia chilonis

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Agricultural Sciences in China 2011年第7期10卷 1134-1138页

作者： HUANG Jia WU Shun-fan ye Gong-yin State Key Laboratory of Rice Biology Ministry of Agriculture/Key Laboratory of Molecular Biology of Crop Pathogens and Insects Institute of Insect Sciences Zhejiang University Hangzhou 310029 P.R.China

Chlorantraniliprole was introduced into China from 2008 as a novel insecticide to control the rice stem borer, Chilo suppressalis （Walker）. Cotesia chilonis （Matsumura） is the major parasitoid of C. suppressalis. We collected seven populations of C. suppressalis and two populations of C. chilonis in different locations in China in 2009 to investigate the lethal effects of chlorantraniliprole on them. The populations of C. suppressalis from different regions showed various LD50 values ranging from 2.00 to 18.70 ng per larva. Chlorantraniliprole has negligible acute contact toxicity （LC50500 mg L-1） to C. chilonis and its oral toxicity is also much lower than that of fipronil （2 800-fold difference in LC50）. The results indicated that chlorantraniliprole is a good alterative in rice integrated pest management （IPM） programs. The susceptibility data of C. suppressalis will be useful for monitoring resistance levels in future.

关键词： chlorantraniliprole Chilo suppressalis Cotesia chilonis integrated pest management (IPM)

Automatic Extraction of the Sparse Prior Correspondences for Non-Rigid Point Cloud Registration

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Computer Modeling in Engineering & Sciences 2023年第8期136卷 1835-1856页

作者： Yan Zhu Lili Tian fan ye Gaofeng Sun Xianyong fang Department of Sports and Military Education Anhui UniversityHefei230601China School of Computer Science and Technology Anhui UniversityHefei230601China

Non-rigid registration of point clouds is still far from stable,especially for the largely deformed *** initial correspondences are often adopted to facilitate the ***,there are few studies on how to build them ***,in this paper,we propose a robust method to compute such priors automatically,where a global and local combined strategy is *** priors in different degrees of deformation are obtained by the locally geometrical-consistent point matches from the globally structural-consistent region *** further utilize the matches,this paper also proposes a novel registration method based on the Coherent Point Drift *** method takes both the spatial proximity and local structural consistency of the priors as supervision of the registration process and thus obtains a robust alignment for clouds with significantly different *** and quantitative experiments demonstrate the advantages of the proposed method.

关键词： Non-rigid registration point clouds coherent point drift