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基于Kano模型的沈阳市社区智慧养老服务优化策略研究

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中国老年保健医学 2024年第2期22卷 80-83页

作者：赵迪张思文辽宁中医药大学经济管理学院 110847

目的明确沈阳市老年人对五类智慧养老服务项目的需求程度,为沈阳市社区品质养老服务升级提供优化策略。方法采用问卷调查法进行实证研究,调查沈阳市和平区7个养老服务中心的老年人对五类智慧养老服务项目的需求情况,共获得200份样本,其... 详细信息

目的明确沈阳市老年人对五类智慧养老服务项目的需求程度,为沈阳市社区品质养老服务升级提供优化策略。方法采用问卷调查法进行实证研究,调查沈阳市和平区7个养老服务中心的老年人对五类智慧养老服务项目的需求情况,共获得200份样本,其中190份为有效数据,借助SPSS 22软件对问卷调查的数据分析整理。以Kano模型为理论依据精准定位社区开展的智慧养老服务项目的属性类别。结果以沈阳市老年人的社区养老项目需求为出发点,得出沈阳市社区智慧养老服务项目可分为必备属性(M)、期望属性(O)、魅力属性(A)。经梳理分析后发现,必备属性服务项目为4项,期望属性服务项目为9项,魅力属性服务项目为8项。结论根据服务项目属性特征及需求程度,提出建议。沈阳市社区智慧养老服务应改进必备型需求服务项目,着力提高期望型需求服务项目,追求落实魅力型需求服务项目。

关键词：智慧养老社区养老卡诺模型

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基于特征融合的低剂量CT图像降噪方法

微电子学与计算机 2024年第5期41卷 11-21页

作者：冉瑞生张思文李进房斌重庆师范大学计算机与信息科学学院重庆401331 重庆大学计算机学院重庆400044

近年来低剂量CT(Low Dose CT,LDCT)被广泛应用于临床诊断中,但LDCT会产生不规则的噪声。已有的降噪方法往往缺乏对全局特征信息的考虑,以及不注重边缘特征信息和重建图像的视觉效果。为此,提出了一种基于特征融合的低剂量CT图像降噪方... 详细信息

近年来低剂量CT(Low Dose CT,LDCT)被广泛应用于临床诊断中,但LDCT会产生不规则的噪声。已有的降噪方法往往缺乏对全局特征信息的考虑,以及不注重边缘特征信息和重建图像的视觉效果。为此,提出了一种基于特征融合的低剂量CT图像降噪方法。首先,利用Transformer优异的全局感受野提取图像的全局特征信息,并利用卷积神经网络(Convolutional Neural Network,CNN)良好的局部特征提取能力提取图像的局部特征信息。在Transformer模块中加入维度变换思想,以更好地抑制噪声;在CNN模块中使用稠密连接的方式将浅层网络的特征信息复用于深层网络中,以此保存更多的特征信息。其次,为了获取更加丰富的图像细节特征,使用了改进的索伯边缘增强算子来加强模型对边缘特征信息的提取能力。最后,将Transformer模块和CNN模块获取的特征信息进行融合并输出重建图像。此外,为了使降噪重建后的图像有更好的质量和视觉效果,设计了一个多尺度复合损失函数。实验表明:在AAPM-Mayo数据集的降噪实验中,与当前主流的LDCT图像降噪方法相比,本文方法取得了更好的降噪效果。

关键词：图像降噪低剂量CT 特征融合 Transformer CNN 边缘增强损失函数

Development and application of blade-coating technique in organic solar cells

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Nano Research 2023年第9期16卷 11571-11588页

作者： Xin zhang Hong zhang Shilin Li Linge Xiao siwen zhang Bing Han Jiajie Kang Huiqiong Zhou China School of Engineering and Technology China University of Geosciences(Beijing)Beijing 100083China CAS Key Laboratory of Nanosystem and Hierarchical Fabrication National Center for Nanoscience and TechnologyBeijing 100190China School of Chemistry Beihang UniversityBeijing 100191China The Department of Thoraciccardio Surgery PLA Rocket Force Characteristic Medical CenterBeijing 100088China

Due to the characteristics of lower material waste,higher crystallinity,roll-to-roll compatibility,and high-throughput continuous processing,blade-coating has been widely applied in the preparation of large-area organic solar *** this paper,the technique of blade-coating is introduced,including the effects of blading speed,substrate temperature,and other technological innovations during the process of ***,the recent progress of blade-coating in organic solar cells is summarized and the active layer prepared by a blade-coating method is introduced in detail,including materials,processing methods,solvents,and *** interface layer and electrodes prepared by the blade-coating method are also ***,some perspectives on the blade-coating method are *** the foreseeable future,blade-coating will become the core of batch production of large-area organic solar cells,so as to make organic solar cells more competitive.

关键词： blade-coating printable organic solar cells large-area

春播区鲜食玉米产量与主要农艺性状相关性分析

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作物研究 2024年第2期38卷 97-103页

作者：郝曦煜张仲鹃张斯文张瑾吴世凯郑春秀王雪黑龙江飞鹤乳业有限公司北京100015 黑龙江北纬四十七绿色有机食品有限公司黑龙江齐齐哈尔161500 黑龙江北纬四十七绿色有机农场有限公司黑龙江齐齐哈尔161500 依安县双阳镇乡村经济发展服务中心黑龙江依安161500 依安县解放乡乡村经济发展服务中心黑龙江依安161500 依安县三兴镇人民政府黑龙江依安161500 依安县阳春乡人民政府黑龙江依安161500

为探索鲜食玉米不同农艺性状和产量之间的关系,为春播鲜食玉米育种提供参考,本试验以69个鲜食玉米品种为材料,对生育期、株高、茎粗等18个农艺性状与产量进行变异分析、相关分析、回归分析、偏相关分析和通径分析。结果表明:秃尖长的变... 详细信息

为探索鲜食玉米不同农艺性状和产量之间的关系,为春播鲜食玉米育种提供参考,本试验以69个鲜食玉米品种为材料,对生育期、株高、茎粗等18个农艺性状与产量进行变异分析、相关分析、回归分析、偏相关分析和通径分析。结果表明:秃尖长的变异系数最大(176.93%),其次为散粉—吐丝期天数(100.19%);播种—出苗天数、吐丝—收获天数、穗长、穗粗、穗行数、行粒数和穗质量与产量极显著正相关,株高与产量显著正相关;出苗—抽穗天数、秃尖长与产量极显著负相关。出苗—抽穗天数(X_(2))、抽穗—散粉天数(X_(3))、穗位高(X_(9))、穗长(X_(11))、秃尖长(X_(12))、穗粗(X_(13))、行粒数(X_(15))、穗质量(X16)8个农艺性状与产量(Y)的回归方程为Y=1828.30-39.88X_(2)+366.41X_(3)+11.94X_(9)+48.51X_(11)-270.09X_(12)+414.40X_(13)-123.05X_(15)+33.73X_(16)。抽穗—散粉、穗位高与产量显著正偏相关,穗质量与产量极显著正偏相关,行粒数与产量显著负偏相关;抽穗—散粉天数、穗位高、穗长、穗粗、穗质量对产量具有正直接效应,出苗—抽穗的天数、秃尖长、行粒数对产量具有负直接效应,穗质量对产量具有最高的正直接效应(0.866)。综合分析,在选育高产鲜食玉米品种时,可关注穗质量较大、秃尖长较短、出苗—抽穗天数较短、穗位较高、果穗较长、较粗的品种。

关键词：鲜食玉米育种产量农艺性状相关性分析

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Zinc Anode for Mild Aqueous Zinc-Ion Batteries: Challenges, Strategies, and Perspectives

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Nano-Micro Letters 2022年第3期14卷 32-78页

作者： Jinzhang Yang Bosi Yin Ying Sun Hongge Pan Wenping Sun Baohua Jia siwen zhang Tianyi Ma Key Laboratory for Green Synthesis and Preparative Chemistry of Advanced Materials of Liaoning Province Institute of Clean Energy ChemistryCollege of ChemistryLiaoning UniversityShenyang 110036People’s Republic of China Institute of Science and Technology for New Energy Xi’an Technological UniversityXi’an 710021People’s Republic of China State Key Laboratory of Clean Energy Utilization School of Materials Science and EngineeringZhejiang UniversityHangzhou 310027People’s Republic of China Centre for Translational Atomaterials Swinburne University of TechnologyHawthornVIC 3122Australia

The rapid advance of mild aqueous zinc-ion batteries(ZIBs)is driving the development of the energy storage system *** the thorny issues of Zn anodes,mainly including dendrite growth,hydrogen evolution,and corrosion,severely reduce the performance of *** commercialize ZIBs,researchers must overcome formidable *** about mild aqueous ZIBs is still *** technical and scientific obstacles to designing Zn anodes with high stripping efficiency and long cycling life have not been ***,the performance of Zn anodes is a complex scientific issue determined by various parameters,most of which are often ignored,failing to achieve the maximum performance of the *** review proposes a comprehensive overview of existing Zn anode issues and the corresponding strategies,frontiers,and development trends to deeply comprehend the essence and inner connection of degradation mechanism and ***,the formation mechanism of dendrite growth,hydrogen evolution,corrosion,and their influence on the anode are ***,various strategies for constructing stable Zn anodes are summarized and discussed in detail from multiple *** strategies are mainly divided into interface modification,structural anode,alloying anode,intercalation anode,liquid electrolyte,non-liquid electrolyte,separator design,and other ***,research directions and prospects are put forward for Zn *** contribution highlights the latest developments and provides new insights into the advanced Zn anode for future research.

关键词： Zn-ion batteries Zn metal anode Dendrite Hydrogen evolution Corrosion

Synthesis and application of green solvent dispersed organic semiconducting nanoparticles

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Nano Research 2023年第12期16卷 13419-13433页

作者： siwen zhang Hong zhang Shuo Yang Xin zhang Shilin Li Liqing Huang Ya-nan Jing Linge Xiao Yuan zhang Bing Han Jia-jie Kang Huiqiong Zhou China School of Engineering and Technology China University of Geosciences(Beijing)Beijing 100083China CAS Key Laboratory of Nanosystem and Hierarchical Fabrication National Center for Nanoscience and TechnologyBeijing 100190China Beijing Tingrun Membrane Technology Development Co. Ltd.Beijing 101102China School of Chemistry Beihang UniversityBeijing 100191China The Department of thoraciccardio surgery PLA Rocket Force Characteristic Medical CenterBeijing 100088China

Organic photovoltaic semiconductors have made significant progress and have promising application prospects after decades of *** compared with traditional semiconductors,the solution method for preparing photovoltaic semiconductors shows the advantages of low cost and convenient ***,because of the extremely poor solubility of the polymers used to prepare semiconductors,toxic solvents must be used when using the solution method,which has significant negative effects on the environment and operators and severely limits its development *** nanoparticles(NPs),on the other hand,can avoid these *** NPs are typically water or alcohol-based,no toxic solvents are ***,NPs have been used in organic solar cells,hydrogen catalysis,organic light-emitting diodes,and other fields after nearly two decades of development,and their preparation methods have been *** describe the preparation,optimization,and application of NPs in photovoltaic semiconductors in this review.

关键词： nanoparticle organic semiconductor miniemulsion method nanoprecipitation method surfactant

Composition-tuned optical properties of CdSe_(x)S_(1-x) and CdSe_(x)S_(1-x)/ZnS QDs

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Optoelectronics Letters 2022年第8期18卷 479-483页

作者： WU Feng zhang siwen TIAN Zhu YU Wenhui SUN Shishuai LI Xiaolan Department of Physics School of ScienceTianjin University of TechnologyTianjin 300384China

The different compositions of the ternary alloyed CdSe_(x)S_(1-x)quantum dots(QDs)and CdSe_(x)S_(1-x)/ZnS core/shell quantum dots(CSQDs)have been synthesized by the chemical *** radii of these QDs were determined by transmission electron microscope(TEM).The optical properties of these QDs were investigated by the absorption and fluorescent *** was found that the absorption and fluorescent emissions were tuned by the component ratio,and the Commission Internationale de l´Eclairage(CIE)coordinates of the fluorescent spectra also depended on the *** with the CdSe_(x)S_(1-x)QDs,the CdSe_(x)S_(1-x)/ZnS CSQDs exhibit the fluorescence enhancement due to the surface passivation by shell *** composition-tuned optical properties may allow them to be used as fluorescent markers in biological imaging and to fabricate multicolor light emitting diode(LED).

关键词： CdSe_(x)S_(1-x) CdSe_(x)S_(1-x)/ZnS QDs

CNT@MnO_(2) composite ink toward a flexible 3D printed micro-zinc-ion battery

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Carbon Energy 2022年第3期4卷 446-457页

作者： Yujin Ren Fanbo Meng siwen zhang Bu Ping Hui Li Bosi Yin Tianyi Ma Key Laboratory for Green Synthesis and Preparative Chemistry of Advanced Materials of Liaoning Province Institute of Clean Energy ChemistryCollege of ChemistryLiaoning UniversityShenyangChina Department of Mechanical and Electrical Engineering Xidian UniversityXi'anShanxiChina Centre for Translational Atomaterials Swinburne University of TechnologyHawthornVictoriaAustralia School of Science RMIT UniversityMelbourneVictoriaAustralia

Flexible energy storage devices have played a significant role in multiscenario applications,while flexible zinc-ion batteries(ZIBs),as an essential branch,have developed rapidly in recent ***-dimensional(3D)printing is an extremely advanced technology to design and modify the structure of batteries and provides unlimited possibilities for the diversified development of energy storage ***,by utilizing 3D printing technology,carbon nanotube(CNT)is coated by MnO_(2) to form a flexible CNT@MnO_(2) ink as a cathode for flexible aqueous micro-ZIBs for the first time and zinc powder ink is used as an anode due to its high flexibility and *** Zn//CNT@MnO_(2) flexible battery shows a stable capacity of 63μAh cm^(−2) at 0.4mA cm^(−2).When the battery is bent in different states,the maximum capacity loss compared with the initial value is only 2.72%,indicating its *** study shows the potential of 3D printing technology in the development of flexible manganese-based ZIBs.

关键词： 3D printing carbon nanotubes flexible zinc-ion battery MnO_(2)

面向碳市场交易的(近)零碳园区综合能源系统配置优化方法

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煤炭经济研究 2024年第2期44卷 82-90页

作者：王永利张思文郭璐董焕然于同伟卢岩华北电力大学经济与管理学院北京102206 国网辽宁省电力有限公司辽宁沈阳110002

为深入推进电力体制改革工作,推动新型电力系统建设,加速实现“3060碳达峰、碳中和”目标,工业园区的低碳化、清洁化发展将成为电力系统清洁化转型过程中的重要趋势和重点内容,工业园区实现新能源替代、实行碳排放管理势在必行。在此背... 详细信息

为深入推进电力体制改革工作,推动新型电力系统建设,加速实现“3060碳达峰、碳中和”目标,工业园区的低碳化、清洁化发展将成为电力系统清洁化转型过程中的重要趋势和重点内容,工业园区实现新能源替代、实行碳排放管理势在必行。在此背景下,立足电碳市场协同大背景,从面向碳市场的角度对(近)零碳园区展开研究,对不同碳交易场景下的(近)零碳园区进行深入分析,构建了系统的(近)零碳园区全生命周期碳排放核算方法,并建立了以碳排放最低为目标的园区综合能源系统配置优化模型,致力于推进(近)零碳园区在未来的发展。

关键词：综合能源系统 (近)零碳园区碳排放核算