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基于BP神经网络的上海生鲜农产品物流需求预测

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上海海事大学学报 2024年第1期45卷 39-45,69页

作者：郝杨杨邹宇上海海事大学物流科学与工程研究院上海201306

针对传统的生鲜农产品物流非线性需求预测模型收敛速度慢、精度低等问题,构建由改进粒子群(improved particle swarm optimization,IPSO)算法优化反向传播(back propagation,BP)神经网络的预测模型。引入对立学习机制、自适应惯性权重... 详细信息

针对传统的生鲜农产品物流非线性需求预测模型收敛速度慢、精度低等问题,构建由改进粒子群(improved particle swarm optimization,IPSO)算法优化反向传播(back propagation,BP)神经网络的预测模型。引入对立学习机制、自适应惯性权重、非对称学习因子提升粒子群(particle swarm optimization,PSO)算法的初始解质量,平衡算法的局部开发和全局搜索能力;利用IPSO算法优化BP神经网络的权值和阈值,解决BP神经网络收敛速度慢、容易陷入局部最优等问题。通过上海生鲜农产品物流需求预测实例对模型的有效性进行验证,结果显示:IPSO-BP神经网络模型在预测精度及收敛速度上均明显优于传统PSO-BP神经网络和BP神经网络模型。

关键词：冷链物流需求预测改进粒子群(IPSO)算法反向传播(BP)神经网络

超分子水杨酸联合多西环素治疗中重度痤疮的疗效观察

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中国皮肤性病学杂志 2024年第2期38卷 188-191,219页

作者：沈云佳郝阳阳杨建强湖州市第一人民医院皮肤科浙江湖州313000

目的观察超分子水杨酸联合多西环素及夫西地酸治疗中重度痤疮的临床疗效。方法收集2022年7月—2023年4月湖州市第一医院皮肤科门诊的寻常痤疮患者70例,用随机数字表法将患者分为观察组和对照组,每组35例。对照组给予多西环素口服及夫西... 详细信息

目的观察超分子水杨酸联合多西环素及夫西地酸治疗中重度痤疮的临床疗效。方法收集2022年7月—2023年4月湖州市第一医院皮肤科门诊的寻常痤疮患者70例,用随机数字表法将患者分为观察组和对照组,每组35例。对照组给予多西环素口服及夫西地酸乳膏外用治疗;观察组在对照组基础上给予超分子水杨酸治疗,2周1次,共4次。结果观察组有效30例,有效率为85.71%;对照组有效22例,有效率为62.86%。观察组疗效高于对照组,差异有统计学意义(χ^(2)=4.786,P<0.05)。结论超分子水杨酸联合多西环素及夫西地酸治疗中重度痤疮疗效更佳,值得临床推广应用。

关键词：痤疮超分子水杨酸多西环素夫西地酸乳膏

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疣状表皮发育不良伴发肿瘤的临床特点分析

科技与健康 2024年第1期3卷 13-16页

作者：束敏郝阳阳闫媛媛南京医科大学康达学院江苏连云港222000 湖州市第一人民医院浙江湖州313000

为了解疣状表皮发育不良患者伴发肿瘤的性质和临床特点,检索近20年来文献发表的31例具有详细疣状表皮发育不良确诊肿瘤患者,分析疣状表皮发育不良患者不同肿瘤性质组成及临床特点。结果显示,①疣状表皮发育不良患者可伴发鳞状细胞癌(SCC... 详细信息

为了解疣状表皮发育不良患者伴发肿瘤的性质和临床特点,检索近20年来文献发表的31例具有详细疣状表皮发育不良确诊肿瘤患者,分析疣状表皮发育不良患者不同肿瘤性质组成及临床特点。结果显示,①疣状表皮发育不良患者可伴发鳞状细胞癌(SCC)、基底细胞癌(BCC)、鳞状腺癌(SEC)、Merkel细胞癌(MCC)或鳞状细胞癌合并基底细胞癌;②疣状表皮发育不良伴发肿瘤患者中,以鳞状细胞癌居多,占所有患者的51.6%。扁平疣型疣状表皮发育不良患者伴发肿瘤更为常见,占所有疣状表皮发育不良患者的77.4%;③肿瘤多发于皮肤暴露部位,头面部20例(64.5%)、躯干10例(32.3%)及口腔、生殖器黏膜1例(3.2%);④发病年龄多集中在幼年,其中15例患者在幼儿期(0~6岁)出现皮损等症状,8例患者在少儿期(7~12岁)出现症状;4例患者为青少年(13~17岁);4例患者为青年(18~45岁)。肿瘤发生的年龄在疣状表皮发育不良后20~40年的有27例(87.1%)。⑤男性患者更易伴发肿瘤,占74.2%。研究发现,疣状表皮发育不良患者伴发肿瘤以鳞状细胞癌多发。

关键词：疣状表皮发育不良肿瘤鳞状细胞癌

A review of low-carbon technologies and projects for the global cement industry

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Journal of Environmental Sciences 2024年第2期136卷 682-697页

作者： yangyang Guo Lei Luo Tingting Liu Liwei hao Yinming Li Pengfei Liu Tingyu Zhu CAS Key Laboratory of Green Process and Engineering Institute of Process EngineeringInnovation Academy for Green ManufactureChinese Academy of SciencesBeijing 100190China Center for Excellence in Regional Atmospheric Environment Institute of Urban EnvironmentChinese Academy of SciencesXiamen 361021China State Key Laboratory of Solid Waste Reuse for Building Materials Beijing Building Materials Academy of Sciences ResearchBeijing 100041China Ganjiang Innovation Academy Chinese Academy of SciencesGanzhou 341000China

Carbon dioxide(CO_(2))emissions from the cement industry account for 26%of the total industrial emissions,and the need to develop low-carbon techniques within the cement industry is extremely urgent.Low-carbon projects and technologies for the cement industry in different regions and countries have been thoroughly reviewed in this manuscript,and the low-carbon development concept for each county has been analyzed.For developing countries such as China and India,energy saving and efficiency enhancement are currently the key points,while for developed countries and regions such as Europe,more efforts have been focused on carbon capture,utilization,and storage(CCUS).Global CCUS projects have been previously conducted,and the majority of CCUS projects are currently performed in Europe where major projects such as the CEMCAP,CLEANKER,and IEILAC projects represent the latest research progress in cement production technologies and low-carbon technologies for the global cement industry.The development of low-carbon cement technologies has changed from focusing on the end point to instead focusing on the source and process through the exploration of hydrogen and solar energies,and more disruptive and original technologies are expected to be developed,particularly in the cement industry in China.

关键词： Cement industry CO_(2)emissions Low carbon development Projects Carbon capture utilization and storage

Experimental investigation of the inhibition of deep-sea mining sediment plumes by polyaluminum chloride

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International Journal of Mining Science and Technology 2024年第1期34卷 91-104页

作者： Fengpeng Zhang Xuguang Chen Jiakang Wei yangyang Zhang Weikun Xu hao Li College of Engineering Ocean University of ChinaQingdao 266100China Shandong Province Key Laboratory of Ocean Engineering Ocean University of ChinaQingdao 266100China China Merchants Marine and Offshore Research Institute Co. Ltd.Shenzhen 518000China National Deep Sea Center Qingdao 266237China

Deep-sea sediment disturbance may occur when collecting polymetallic nodules,resulting in the creation of plumes that could have a negative impact on the ecological environment.This study aims to investigate the potential solution of using polyaluminum chloride(PAC)in the water jet.The effects of PAC are examined through a self-designed simulation system for deep-sea polymetallic nodule collection and sediment samples from a potential deep-sea mining area.The experimental results showed that the optimal PAC dose was found to be 0.75 g/L.Compared with the test conditions without the addition of PAC,the presence of PAC leads to a reduction in volume,lower characteristic turbidity,smaller diffusion velocity,and shorter settling time of the plume.This indicates that PAC inhibits the entire development process of the plume.The addition of PAC leads to the flocculation of mm-sized particles,resulting in the formation of cm-sized flocs.The flocculation of particles decreases the rate of erosion on the seabed by around 30%.This reduction in erosion helps to decrease the formation of plumes.Additionally,when the size of suspended particles increases,it reduces the scale at which they diffuse.Furthermore,the settling velocity of flocs(around 10^(-2) m/s)is much higher that of compared to sediment particles(around 10^(-5) m/s),which effectively reduces the amount of time the plume remains in suspension.

关键词： Deep-sea mining Deep-sea polymetallic nodules Sediment plume Polyaluminum chloride Jet impact Particle flocculation

Synthesis of H_(2)WO_(4)/GO and Its Oxidative Desulfurization Activity

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China Petroleum Processing & Petrochemical Technology 2021年第2期23卷 66-76页

作者： Wang Zihao Li Xiuping hao yangyang Zhao Rongxiang College of Chemistry Chemical Engineering and Environmental EngineeringLiaoning Shihua UniversityFushun 113001

H_(2)WO_(4)/GO catalyst was synthesized by the immersion method and was characterized by using X-ray diffraction(XRD),Fourier-transform infrared spectroscopy(FT-IR),scanning electron microscopy(SEM),and nitrogen adsorptiondesorption measurements(BET).The characterization results show that H_(2)WO_(4) has been dispersed on GO(grapheme oxide).H_(2)WO_(4)/GO was used as catalyst in the oxidative desulfurization of dibenzothiophene(DBT),with H2O2 acting as oxidant and acetonitrile acting as extraction agent.The experimental results show that the sulfur removal rate for DBT reach 99.2%,that for 4,6-dimethyldibenzothiophene(4,6-DMDBT)reach 95%and that for benzothiophene(BT)reach 42.8%under the optimal reaction conditions.Meanwhile,the recycled catalysts still exhibits good desulfurization performance after four operating cycles.The high activity and stability of catalysis is attributed to a small dose of H_(2)WO_(4),which is highly dispersed inside the layers of GO.This desulfurization reaction follows the pseudo-first-order kinetics,and the apparent activation energy of the desulfurization reaction is 18.515 kJ/mol,which indicates that the H_(2)WO_(4)/GO used as desulfurization catalyst has demonstrated good desulfurization property for DBT.

关键词： H_(2)WO_(4)/GO graphene oxide desulfurization catalysts

Enhancing SAEAs with unevaluated solutions:a case study of relation model for expensive optimization

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Science China(Information Sciences) 2024年第2期67卷 41-58页

作者： hao hao Xiaoqun ZHANG Aimin ZHOU Institute of Natural Sciences Shanghai Jiao Tong University Shanghai Frontiers Science Center of Molecule Intelligent Syntheses School of Computer Science and Technology East China Normal University

Surrogate-assisted evolutionary algorithms(SAEAs) hold significant importance in resolving expensive optimization problems. Extensive efforts have been devoted to improving the efficiency of SAEAs through the development of proficient model-assisted solution selection methods, which, however, first requires generating high-quality solutions. The fundamental paradigm of evaluating a limited number of solutions in each generation within SAEAs reduces the variance of adjacent populations, thereby affecting the quality of offspring solutions. This is a frequently encountered issue yet receives little attention. To address the issue, this paper presents a framework using unevaluated solutions to enhance the efficiency of SAEAs.The surrogate model is employed to identify high-quality solutions for the direct generation of new solutions without evaluation. To ensure dependable selection, we have introduced two tailored relation models to select the optimal solution and the unevaluated population. A comprehensive experimental analysis is performed on two test suites, which showcases the superiority of the relation model over regression and classification models in the solution selection phase. Furthermore, the surrogate-selected unevaluated solutions with high potential have been shown to enhance the efficiency of the algorithm significantly.

关键词： expensive optimization unevaluated solutions relation model surrogate-assisted evolutionary algorithm

Very long wave infrared quantum dot photodetector up to 18μm

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Light(Science & Applications) 2024年第4期13卷 772-782页

作者： Xiaomeng Xue Qun hao Menglu Chen School of Optics and Photonics Beijing Institute of TechnologyBeijing 100081China. Westlake Institute for Optoelectronics FuyangHangzhou 311421China. Physics Department Changchun University of Science and TechnologyChangchun 130022China

Colloidal quantum dots(CQDs)are of interest for optoelectronic devices because of the possibility of high-throughput solution processing and the wide energy gap tunability from ultraviolet to infrared wavelengths.People may question about the upper limit on the CQD wavelength region.To date,although the CQD absorption already reaches terahertz,the practical photodetection wavelength is limited within mid-wave infrared.To figure out challenges on CQD photoresponse in longer wavelength,would reveal the ultimate property on these nanomaterials.What’s more,it motivates interest in bottom-up infrared photodetection with less than 10%cost compared with epitaxial growth semiconductor bulk.In this work,developing a re-growth method and ionic doping modification,we demonstrate photodetection up to 18μm wavelength on HgTe CQD.At liquid nitrogen temperature,the responsivity reaches 0.3 A/W and 0.13 A/W,with specific detectivity 6.6×108 Jones and 2.3×109 Jones for 18μm and 10μm CQD photoconductors,respectively.This work is a step toward answering the general question on the CQD photodetection wavelength limitation.

关键词： quantum wave ultraviolet

A Global Optimality Principle for Fully Coupled Mean-field Control Systems

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Acta Mathematicae Applicatae Sinica 2024年第2期40卷 379-413页

作者： Tao hao School of Statistics and Mathematics Shandong University of Finance and EconomicsJinan 250014China

This paper concerns a global optimality principle for fully coupled mean-field control systems.Both the first-order and the second-order variational equations are fully coupled mean-field linear FBSDEs. A new linear relation is introduced, with which we successfully decouple the fully coupled first-order variational equations. We give a new second-order expansion of Y^(ε) that can work well in mean-field framework. Based on this result, the stochastic maximum principle is proved. The comparison with the stochastic maximum principle for controlled mean-field stochastic differential equations is supplied.

关键词： optimal control global maximum principle fully coupled general mean-field FBSDE adjoint equation recursive utility