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Enhanced Biometric Score Fusion Scheme Based on the AdaBoost Algorithm

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Journal of Electronic Science and Technology 2017年第2期15卷 187-193页

作者： Wei-yang lin Chih-yang lin Chuan-Jheng yang Department of Computer Science and Information Engineering National Chung Cheng UniversityChiayi 62102 Department of Communications Engineering Yuan-Ze University Taoyuan 32003

Information fusion in biometric systems, either multimodal or intramodal fusion, usually provides an improvement in recognition performance. This paper presents an improved score-level fusion scheme called boosted score fusion. The proposed framework is a two-stage design where an existing fusion algorithm is adopted at the first stage. At the second stage, the weights obtained by the AdaBoost algorithm are utilized to boost the performance of the previously fused results. The experimental results demonstrate that the performance of several score-level fusion methods can be improved by using the presented method.

关键词： Index Terms-AdaBoost biometric authentication face recognition score-level fusion.

Group Decision Making With Consistency of Intuitionistic Fuzzy Preference Relations Under Uncertainty

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IEEE/CAA Journal of Automatica Sinica 2018年第3期5卷 741-748页

作者： yang lin Yingming Wang Institute of Decision Science Fuzhou University School of Economics Fujian Normal University

Intuitionistic fuzzy preference relation(IFPR) is a suitable technique to express fuzzy preference information by decision makers(DMs). This paper aims to provide a group decision making method where DMs use the IFPRs to indicate their preferences with uncertain weights. To begin with, a model to derive weight vectors of alternatives from IFPRs based on multiplicative consistency is presented. Specifically, for any IFPR,by minimizing its absolute deviation from the corresponding consistent IFPR, the weight vectors are generated. Secondly,a method to determine relative weights of DMs depending on preference information is developed. After that we prioritize alternatives based on the obtained weights considering the risk preference of DMs. Finally, this approach is applied to the problem of technical risks assessment of armored equipment to illustrate the applicability and superiority of the proposed method.

关键词： Group decision making(GDM) intuitionistic fuzzy preference relation(IFPR) intuitionistic fuzzy set(IFS) multiplicative consistency risk preference uncertain weights

Symplectic Convexity for Orbifolds

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Acta Mathematica Sinica,English Series 2008年第4期24卷 555-564页

作者： Qi lin yang Mathematical Department Tsinghua University Beijing 100084 P. R. China

Let a connected compact Lie group G act on a connected symplectic orbifold of orbifold fundamental group Г. If the action preserves the symplectic structure and there is a G-equivariant and mod-Г proper momentum map for the lifted action on the universal branch covering orbifold, and if the lifted G-action commutes with that of Г, then the symplectic convexity theorem is still true for this kind of lifted Hamiltonian action.

关键词： momentum map mod-F proper map symplectic orbifold

Cotton Major Latex Protein 28 Functions as a Positive Regulator of the Ethylene Responsive Factor 6 in Defense against Verticillium dahliae

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Molecular Plant 2015年第3期8卷 399-411页

作者： Chun-lin yang Institute of Microbiology Chinese Academy of Sciences Beijing 100101 China State Key Laboratory of Plant Genomics Beijing 100101 China University of Chinese Academy of Sciences Beijing 100049 China

In this study, we identified a defense-related major latex protein （MLP） from upland cotton （designated GhMLP28） and investigated its functional mechanism. GhMLP28 transcripts were ubiquitously present in cotton plants, with higher accumulation in the root. Expression of the GhMLP28 gene was induced by Verticillium dahliae inoculation and was responsive to defense signaling molecules, including ethylene, jas- monic acid, and salicylic acid. Knockdown of GhMLP28 expression by virus-induced gene silencing re- sulted in increased susceptibility of cotton plants to V. dahliae infection, while ectopic overexpression of GhMLP28 in tobacco improved the disease tolerance of the transgenic plants. Further analysis revealed that GhMLP28 interacted with cotton ethylene response factor 6 （GhERF6） and facilitated the binding of GhERF6 to GCC-box element. Transient expression assay demonstrated that GhMLP28 enhanced the tran- scription factor activity of GhERF6, which led to the augmented expression of some GCC-box genes. GhMLP28 proteins were located in both the nucleus and cytoplasm and their nuclear distribution was dependent on the presence of GhERF6. Collectively, these results demonstrate that GhMLP28 acts as a positive regulator of GhERF6, and synergetic actions of the two proteins may contribute substantially to protection against V. dahliae infection in cotton plants.

关键词： major latex protein ethylene responsive factor interaction disease tolerance cotton

N,S-codoped porous carbon nanosheets decorated with Fe_(3)C nanoparticles as high-performance anode materials for lithium ion hybrid supercapacitors

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Rare Metals 2022年第7期41卷 2517-2526页

作者： lin Gao Lu-Lu Zhang Xue-lin yang College of Electrical Engineering&New Energy Hubei Collaborative Innovation Center for Microgrid of New EnergyThree Gorges UniversityYichang 443002China

The practical applications of carbon anode for lithium-ion batteries(LIBs)are largely obstructed by their moderate rate capability and cyclic ***,we report a N,S-codoped porous carbon nanosheet(NSC)decorated with Fe_(3)C nanoparticles(Fe_(3)C/NSC)by a one-pot pyrolysis *** high surface area and abundant defects of NSC can not only promote electrons and ions transfer,but also induce high pseudocapacitive *** importantly,the synergistic catalysis effect of Fe-Nx and Fe_(3)C can catalyze the reversible conversion of some solid electrolyte interface(SEI)components to offer excess capacity during *** expected,the Fe_(3)C-NSC anode delivers a discharge capacity of750 mAh·g^(-1)under a current density of 0.5 A·g^(-1)through 500 cycles and retains a dis-charge capacity of 366 mAh·g^(-1)at 4 A·g^(-1)after 1600 cycles,*** importantly,the lithium-ion capacitors based on Fe_(3)C/NSC anode demonstrate a high energy density of 249.5 Wh·kg^(-1)at 560 W·kg^(-1).

关键词： Fe_(3)C/NSC Lithium-ion batteries Pseudocapacitive behavior Lithium-ion capacitors

A Bond Pricing Model with Credit Migration Risk:Different Upgrade and Downgrade Thresholds

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Acta Mathematicae Applicatae Sinica 2023年第3期39卷 765-777页

作者： Jin LIANG yang lin School of Mathematical Sciences Tongji UniversityShanghai 200092China

In this paper, a new corporate bond pricing model with credit migration risk is proposed. This model sets different thresholds for the rising or falling of credit ratings, which forms a buffer zone that could reduce the frequency of credit rating changes. Mathematically, this model is a system of partial differential equations with overlapping area. The existence, uniqueness, regularity and asymptotic behavior of the solution are obtained. Furthermore, a numerical scheme and its stability, convergence and accuracy are discussed in detail. Calibration and analysis of the parameters are also suggested.

关键词： credit migration risk corporate bond pricing structural model buffer zone monotonic iteration calibration

Artificial Intelligence Applications in the Development of Autonomous Vehicles:A Survey

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IEEE/CAA Journal of Automatica Sinica 2020年第2期7卷 315-329页

作者： Yifang Ma Zhenyu Wang Hong yang lin yang Department of Information Technology and Decision Sciences Old Dominion UniversityNorfolkVA 23529 USA Department of Computational Modeling and Simulation Engineering Old Dominion UniversityNorfolkVA 23529 USA Department of Mechanical and Electrical Engineering Huazhong Agricultural UniversityWuhan 430070China

The advancement of artificial intelligence(AI)has truly stimulated the development and deployment of autonomous vehicles(AVs)in the transportation *** by big data from various sensing devices and advanced computing resources,AI has become an essential component of AVs for perceiving the surrounding environment and making appropriate decision in *** achieve goal of full automation(i.e.,self-driving),it is important to know how AI works in AV *** research have made great efforts in investigating different aspects of applying AI in AV ***,few studies have offered the research community a thorough examination of current practices in implementing AI in ***,this paper aims to shorten the gap by providing a comprehensive survey of key studies in this research ***,it intends to analyze their use of AIs in supporting the primary applications in AVs:1)perception;2)localization and mapping;and 3)decision *** investigates the current practices to understand how AI can be used and what are the challenges and issues associated with their *** on the exploration of current practices and technology advances,this paper further provides insights into potential opportunities regarding the use of AI in conjunction with other emerging technologies:1)high definition maps,big data,and high performance computing;2)augmented reality(AR)/virtual reality(VR)enhanced simulation platform;and 3)5G communication for connected *** paper is expected to offer a quick reference for researchers interested in understanding the use of AI in AV research.

关键词： Artificial intelligence(AI) autonomous vehicles(AVs) deep learning(DL) motion planning perception self-driving

Fabrication and Characterizations of Metallic Mg Containing PMMA-Based Partially Degradable Composite Bone Cements

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Acta Metallurgica Sinica(English Letters) 2019年第7期32卷 808-816页

作者： Xiao lin Adrian Chan Xiao-Xiao Tan Hui-lin yang Lei yang Orthopaedic Institute Soochow University Suzhou 215006 China Department of Orthopaedics The First Affiliated Hospital of Soochow University Suzhou 215006 China Waterloo Institute for Nanotechnology (WIN) University of Waterloo 200 University Ave West Waterloo ON Canada School of Materials Engineering Shanghai University of Science and Engineering Shanghai 201620 China

Inadequate strength at the bone/cement interface is one of the main drawbacks of poly(methylmethacrylate)(PMMA) bone cement in the current orthopedic surgeries. In the present work, a partially degradable PMMA/Mg composite bone cement (PMC) was developed for enhancing the bone/cement interfacial strength, which is proposed to be accomplished by increasing the osteo-conductivity of PMMA and enhancing the mechanical interlocking between bone tissue and the porous PMMA surface formed by the degradation of Mg on the surface of the cement. PMCs were prepared with various concentrations of Mg particles with different sizes and alloy compositions. The effects of Mg particle size, composition and content on the injectability, mechanical and degradation properties, and biocompatibility of PMCs were evaluated. The results show that these parameters affected the properties of the PMCs simultaneously. The good injectability and compressive strengths of PMMA were preserved, while the compatibility to osteoblasts was enhanced when adding Mg particles in a proper manner. The PMCs degraded at the surface with time and formed porous surface structures in the physiological environment, while maintaining the original compressive strengths. This preliminary study shows that the PMC is promising for minimally invasive orthopedic surgery;however, it still requires to be optimized and evaluated in the future.

关键词： Biomaterials Composite Magnesium Poly(methylmethacrylate) Bone cement Kyphoplasty

Adsorption equilibrium and kinetics studies of divalent manganese from phosphoric acid solution by using cationic exchange resin

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Chinese Journal of Chemical Engineering 2020年第11期28卷 2758-2770页

作者： Haibo Zhuang Yanjun Zhong lin yang School of Chemical Engineering Sichuan UniversityChengdu 610065China

There are numerous impurities in wet-process phosphoric acid,among which manganese is one of detrimental metallic impurities,and it causes striking negative effects on the industrial phosphoric acid production and downstream *** article investigated the adsorption behavior of manganese from phosphoric acid employing Sinco-430 cationic ion-exchange *** FT-IR and XPS characterizations,the adsorption mechanism was proved to be that manganese was combined with sulfonic acid *** crucial parameters such as temperature,phosphoric acid content and resin dose were studied to optimize adsorption *** optimization,removal percentage and sorption capacity of manganese reached 53.12 wt%,28.34 mg·g^-1,***-2nd-order kinetic model simulated kinetics data best and the activation energy was evaluated as 6.34 kJ·mol^-1 for the sorption reaction of *** addition,the global adsorption rate was first controlled by film diffusion process and second determined by pore diffusion *** was found that the resin could adsorb up to 50.24 mg·g^-1 for *** studies showed that Toth adsorption isotherm model fitted best,followed by Temkin and Langmuir adsorption isotherm *** analysis showed that manganese adsorption was an endothermic process with enhanced randomness and spontaneity.

关键词： Manganese Ion exchange Phosphoric acid Kinetics Isotherm Thermodynamics