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Multi-attribute group decision-making method with linguistic q-rung orthopair fuzzy information based on bi-direction Choquet integral

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International journal of Intelligent Computing and Cybernetics 2023年第2期16卷 341-363页

作者： Ling weng jian Lin Shujie Lv School of Computer and Information Science Fujian Agriculture and Forestry UniversityFuzhouChina

Purpose-The purpose of this paper is to develop the linguistic q-rung orthopair fuzzy set(LqROFS)information VIKOR method based on the bi-direction Choquet integral(BDCI),taking into account the correlation between *** method can enrich the existing studies related to LqROFS information and better solve the problem of MAgDM ***/methodology/approach-Since applying Choquet integral(CI)depict information interaction is a common operation in ***,the traditional CI has some *** unidirectional alignment may affect the MAgDM ***,a LqROFS-VIKOR method based on BDCI is proposed,where BDCI is used to aggregate the decision ***,it is not reasonable to apply exact numbers to express the similarity between two qualitative *** a new method of defining similarity using linguistics is *** similarity is used to calculate attribute ***-The validity and potential application of MAgMD method with linguistic q-rung orthopair fuzzy information based on BDCI are demonstrated in a numerical examples ***/value-According to the study of available literature,the current research on LqROFS is *** existing studies of both similarity and aggregate operators have certain *** definition of similarity proposed in this paper is more in line with *** compared with the existing methods,the BDCI-based aggregate operator can describe the interaction between information more *** on this VIKOR method based on BDCI under the LqROFS environment can better select the alternative.

关键词： Linguistic q-rung orthopair fuzzy set Similarity measure Bi-direction choquet integral VIKOR method

Time-consistent investment-reinsurance strategies towards joint interests of the insurer and the reinsurer under CEV models

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Science China Mathematics 2017年第2期60卷 317-344页

作者： ZHAO Hui weng Chengguo SHEN Yang ZENg Yan School of Science Tianjin University Tianjin 300072 China Department of Statistics and Actuarial Science University of Waterloo Waterloo ON N2L 3GI Canada Department of Mathematics and Statistics York University Toronto ON M3J IP3 Canada Lingnan (University) College Sun Yat-sen University Guangzhou 510275 China

The present paper studies time-consistent solutions to an investment-reinsurance problem under a mean-variance *** paper is distinguished from other literature by taking into account the interests of both an insurer and a reinsurer *** claim process of the insurer is governed by a Brownian motion with a drift.A proportional reinsurance treaty is considered and the premium is calculated according to the expected value *** the insurer and the reinsurer are assumed to invest in a risky asset,which is distinct for each other and driven by a constant elasticity of variance *** optimal decision is formulated on a weighted sum of the insurer’s and the reinsurer’s surplus *** a verification theorem,which is established with a formal proof for a more general problem,explicit solutions are obtained for the proposed investment-reinsurance ***,numerous mathematical analysis and numerical examples are provided to demonstrate those derived results as well as the economic implications behind.

关键词： investment-reinsurance problem mean-variance analysis time-consistent strategy constant elas-ticity of variance model

基于IKNN和LOF的变压器回复电压数据清洗方法研究

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电子测量与仪器学报 2024年第2期38卷 92-100页

作者：陈啸轩邹阳翁祖辰林锦茄林昕亮张云霄福州大学电气工程与自动化学院福州350108

基于回复电压极化谱提取特征参量是目前广泛应用的变压器油纸绝缘状态评估方法,但极化谱易受工况干扰、人工失误等因素影响而出现特征数据异常的情况,严重降低评估准确性。针对上述问题,该文提出了一种基于局部离群因子(LOF)和改进K最近... 详细信息

基于回复电压极化谱提取特征参量是目前广泛应用的变压器油纸绝缘状态评估方法,但极化谱易受工况干扰、人工失误等因素影响而出现特征数据异常的情况,严重降低评估准确性。针对上述问题,该文提出了一种基于局部离群因子(LOF)和改进K最近邻(IKNN)的回复电压数据清洗方法。首先,选取回复电压极化谱的回复电压极大值Urmax、初始斜率Sr与主时间常数tcdom作为老化特征参量,并基于LOF算法对非标准极化谱中的异常特征量数据进行识别与筛除。其次,利用模糊C均值(FCM)聚类算法减小噪声点对KNN算法的干扰,并通过加权欧氏距离标度突出各特征量间的关联性,进而构建出基于IKNN的数据填补模型架构以实现特征缺失数据的填补。最后,代入多组实测数据验证所提数据清洗方法的实效性。结果表明,数据清洗后的状态评估准确率相较于原有数据上升了50%左右,有效提高了变压器回复电压数据质量,为准确感知变压器运行状况奠定坚实的基础。

关键词：油纸绝缘特征数据清洗局部离群因子算法回复电压极化谱改进K最近邻算法

碳达峰背景下沿海城市群道路交通节能减排潜力

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交通运输系统工程与信息 2024年第5期24卷 45-55页

作者：张兰怡徐艺诺王硕谢郑一翁大维王振昊胡喜生郑娉婷福建农林大学交通与土木工程学院福州350108

基于我国“双碳”目标战略,为探究沿海城市群道路交通节能减排潜力,本文以福建省沿海城市群为研究对象,构建长期能源替代规划系统模型,设置3个一级情景与4个二级子情景。通过调整机动车保有量及燃油经济性等因素模拟分析研究区域道路交... 详细信息

基于我国“双碳”目标战略,为探究沿海城市群道路交通节能减排潜力,本文以福建省沿海城市群为研究对象,构建长期能源替代规划系统模型,设置3个一级情景与4个二级子情景。通过调整机动车保有量及燃油经济性等因素模拟分析研究区域道路交通的减排潜力与趋势。研究结果表明:在所有情景中,改进政策情景(MPS)表现出最优的节能减排效果,其节能减排潜力最大。与基准情景相比,到2035年,MPS情景有望实现节能59.3%。该情景下温室气体与污染物排放的趋势均呈现显著下降,减排效果显著。从具体车型的节能减排潜力来看,在MPS情景下,小型载客汽车(汽油)、重型载货汽车(柴油)和轻型载货汽车(汽油)具有最大的节能潜力;8种车型的碳排放可在2025年达峰;且污染物排放能有效控制,其中重型载货汽车(柴油)的污染物减排潜力最大。研究证实推进综合政策落实,加快传统燃料汽车的淘汰以及优化道路车辆结构等措施,将对实现绿色低碳目标产生积极影响。通过模型模拟,福建省沿海城市群道路交通系统有望在2030年前实现显著的节能减排效果。

关键词：城市交通减污降碳 LEAP模型道路交通能源消耗沿海城市群

Magnetoelastic performance of〈110〉aligned polycrystalline Tb_(0.3)Dy_(0.7)Fe_2

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Rare Metals 2008年第2期27卷 142-145页

作者： weng Ling WANg Bowen SUN Ying LI Shuying Busbridge Simon Key Laboratory of Hebei Province for Electro-Magnetic Field and Electrical Apparatus Reliability Hebei University of Technology Tianjin 300130 China University of Brighton Lewes Road Brighton BN2 4G J United Kingdom

The magnetoelastic performance of 〈110〉 aligned polycrystalline Tb0.3Dy0.7Fe2 was investigated, It has been found that the strain-stress curve is nearly linear without magnetic field, reflecting the purely mechanical elastic properties of the Tb0.3Dy0.7Fe2 rod. The strain-stress curve exhibits a complex behavior in magnetic field and can be divided into three stages. The different stages are explained with magnetic domains in the Tb0.3Dy0.7Fe2 rod alloy and the higher the magnetic field, the larger the stress to switch domains. The Young＇s modulus is also obtained from measuring the strain-stress curve and the variability of Young＇s modulus as the strain is analyzed.

关键词： magnetostrictive materials magnetoelastic strain-stress curve Young's modulus

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粤闽浙沿海重点城市道路交通节能减排路径

环境科学 2024年第5期45卷 3107-3118页

作者：徐艺诺翁大维王硕胡喜生王占永张园园张兰怡福建农林大学交通与土木工程学院福州350108

随着社会和经济的高速发展,能源消耗量快速增加,随之而来的污染问题也日益加剧.目前的研究主要集中于单一城市或长三角、珠三角和京津冀等中国三大经济圈的道路交通节能减排,缺乏对东南沿海经济圈的相关研究.粤闽浙三省位于我国东南沿... 详细信息

随着社会和经济的高速发展,能源消耗量快速增加,随之而来的污染问题也日益加剧.目前的研究主要集中于单一城市或长三角、珠三角和京津冀等中国三大经济圈的道路交通节能减排,缺乏对东南沿海经济圈的相关研究.粤闽浙三省位于我国东南沿海经济发展的核心地带,在其经济发展的同时不可避免地带来了能耗及排放问题.基于长期能源替代规划系统模型,构建了2015~2035年粤闽浙沿海重点城市道路交通基准情景(BAU)以及现有政策情景(EPS)和改进政策情景(MPS),其中,EPS和MPS均设置了车辆结构优化情景(VSO)、提高燃油经济性情景(IFE)和年均行驶里程减少情景(RDM).基于情景模拟,评估在各项政策和措施的作用下,粤闽浙沿海重点城市的道路交通节能减排潜力.结果表明,在一级情景中,改进政策情景对于节约能耗、碳减排以及污染物减排效果最好,相比于基准情景2035年其节能力度达75%,且对CO_(2)、CO、NO_(x)、PM_(2.5)和SO_(2)的排放削减力度分别达68%、59%、66%、70%和64%;在二级情景中,提升燃油经济性的改进情景对于节约能耗(削减30%)效果显著;车辆结构调整的改进情景(削减36%、30%、36%、26%和40%)和年均行驶里程减少的改进情景(削减37%、37%、36%、37%和36%)对于CO_(2)、CO、NO_(x)、PM_(2.5)和SO_(2)减排效果显著.

关键词：粤闽浙沿海重点城市长期能源替代规划系统模型(LEAP) 道路交通节能减排减排路径

经济高质量发展背景下中国省域物流业碳排放时空分异

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环境科学 2024年第9期45卷 5086-5096页

作者：张兰怡徐艺诺翁大维王硕胡喜生邱荣祖福建农林大学交通与土木工程学院福州350108

中国经济自2010年起由高速增长模式转变为高质量发展模式.经济高质量发展期间物流业蓬勃发展,同时产生大量的碳排放,对生态环境造成严重危害.为探明中国物流业碳排放的时空分异特征,基于Moran's I指数和双变量空间自相关模型对2010~202... 详细信息

中国经济自2010年起由高速增长模式转变为高质量发展模式.经济高质量发展期间物流业蓬勃发展,同时产生大量的碳排放,对生态环境造成严重危害.为探明中国物流业碳排放的时空分异特征,基于Moran's I指数和双变量空间自相关模型对2010~2021年的物流业碳排放进行相关性分析;同时,基于时空地理加权回归模型(gTWR)探明中国省域物流业碳排放影响因素的时空异质性.结果表明,统计期内中国省域物流碳排放的空间相关性逐渐从不显著的空间关系转变为显著的空间正相关性,且表现出不同程度的空间集聚性;其次,影响因素的异质性结果显示货物周转量、物流业人均生产总值和基础设施水平与物流业碳排放呈现空间正相关性,而能源强度与物流业碳排放呈现空间负相关性.对比地理加权回归模型(gWR)和最小二乘回归模型(OLS)结果可知,OLS模型、gWR模型和gTWR模型调整后的R2分别为0.541、0.567和0.838,表明所采用的gTWR模型的拟合效果最佳,能够更好地解释不同影响因素与物流业碳排放之间的时空异质性.研究结果可为经济高质量发展下的中国制定不同省域差异化的碳减排策略提供参考.

关键词：物流工程碳排放时空地理加权回归模型(gTWR) 省域物流业低碳物流

Structural characterization and immunostimulatory activity of a water-soluble polysaccharide from abalone(Haliotis discus hannai Ino)muscle

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Food Science and Human Wellness 2023年第2期12卷 495-502页

作者： Linfan Shi gengxin Hao jun Chen junling Wang Wuyin weng College of Ocean Food and Biological Engineering Jimei UniversityXiamen 361021China Engineering Research Center of the Modern Technology for Eel Industry Ministry of EducationXiamen 361021China

A water-soluble polysaccharide from abalone muscle(AMPP)was *** contents of carbohydrate,protein,uronic acid,and sulfate in AMPP were 83.5%,0.5%,2.7%,and 2.6%,***-performance liquid chromatography analysis indicated that AMPP was homogeneous and had an average molecular weight of approximately 3.2 *** main monosaccharides of AMPP were glucose(glc)and mannose with a molar ratio of 99.7:*** structural characteristics of AMPP were elucidated through methylation analysis,Fourier transform infrared spectroscopy,and nuclear magnetic resonance *** linkages of AMPP consisted of terminal,1,4-linked,1,6-linked,and 1,4,6-linked glcp with a molar ratio of 3.1:7.2:1.0:*** one repeat unit of the proposed AMPP structure,the backbone chain was composed of eight 1→4 glycosidic bonds and one 1→6 glycosidic bond,with three branch chains linked by 1→6 glycosidic *** addition,AMPP was found to possess potent immunostimulatory activity via rising phagocytosis of RAW264.7 cells and promoting secretion of TNF-α.

关键词： Polysaccharide Abalone muscle Structural characterization Immunostimulatory activity Nuclear magnetic resonance spectra

Reduced Ti-MOFs encapsulated black phosphorus with high stability and enhanced photocatalytic activity

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journal of Energy Chemistry 2021年第2期30卷 185-191,I0007页

作者： Xiao Liu Peijie Fan Liangping Xiao jian weng Qingchi Xu jun Xu Department of Biomaterials College of Materials.Xiamen UniversityXiamen 361005Fujian.China Department of Physics Research Institute for Biomimetics and Soft MatterFujian Provincial Key Laboratory for Soft Functional MaterialsXiamen UniversityXiamen 361005FujianChina Shenzhen Research Institute of Xiamen University.Shenzhen 518057 GuangdongChina China State Key Lab of Physical Chemistry of Solid Surfaces Collaborative Innovation Center of Chemistry for Energy MaterialsCollege of Chemistry and Chemical EngineeringXiamen UniversityXiamen 361005FujianChina

The generation of green hydrogen(H_2) energy is of great significance to solve worldwide energy and environmental issues. Reduced Ti based photocatalyst has recently attracted intensive attention due to its excellent photocatalytic activity, while the synthesis of reduced Ti based photocatalysts with high stability is still a great challenge. Here, we report a facile method for synthesis of reduced Ti metal organic frameworks(small amounts of Pt incorporated) encapsulated BP(BP/R-Ti-MOFs/Pt) hybrid nanomaterial with enhanced photocatalytic activity. The strong interaction between Ti and P reduces the valence state of the binding Ti^(4+)on the BP surface, forming abundant reduced Ti^(4+)within R-Ti-MOFs/BP. Such reduced Ti^(4+)render R-Ti-MOFs/BP efficient charge transfer and excellent light absorption capability, thus promote the photocatalytic H_2 production efficiency. Furthermore, the Ti-P interaction stabilizes both reduced Ti^(4+)and BP during the photocatalytic reaction, which greatly enhanced the stability of the obtained BP/R-TiMOFs/Pt photocatalyst.

关键词： 2D materials Reduced Ti-MOFs Black phosphorus Photocatalysis Solar-to-hydrogen conversion Metal-organic frameworks