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增强城市安全韧性的基础设施数字化转型研究

全球城市研究（中英文） 2024年第1期5卷 17-33,151页

作者：邓筱莹赫磊雷丁大学享利商学院同济大学建筑与城市规划学院

本研究从基础设施数字化的现状出发,总结基础设施数字化的内涵及其数字化技术特征。目前全球城市对基础设施数字化的应用和发展处于初步阶段,发展潜力巨大。基础设施数字化如何增强全球城市安全韧性是涉及经济、科技、城市发展的重要命... 详细信息

本研究从基础设施数字化的现状出发,总结基础设施数字化的内涵及其数字化技术特征。目前全球城市对基础设施数字化的应用和发展处于初步阶段,发展潜力巨大。基础设施数字化如何增强全球城市安全韧性是涉及经济、科技、城市发展的重要命题,本文将重点介绍全球城市群基础设施的数字化现状,其主要模式及区别,系统剖析数字化对基础设施的安全韧性增强作用和背后可能隐藏的风险。

关键词：基础设施数字化城市安全韧性数字化转型全球城市

A Weighted Runge-Kutta Method with Weak Numerical Dispersion for Solving Wave Equations

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Communications in Computational Physics 2010年第5期7卷 1027-1048页

作者： Shan Chen Dinghui Yang xiaoying deng Department of Mathematical Sciences Tsinghua UniversityBeijing 100084China

In this paper, we propose a weighted Runge-Kutta (WRK) method to solvethe 2D acoustic and elastic wave equations. This method successfully suppresses thenumerical dispersion resulted from discretizing the wave equations. In this method,the partial differential wave equation is first transformed into a system of ordinarydifferential equations (ODEs), then a third-order Runge-Kutta method is proposedto solve the ODEs. Like the conventional third-order RK scheme, this new methodincludes three stages. By introducing a weight to estimate the displacement and itsgradients in every stage, we obtain a weighted RK (WRK) method. In this paper, weinvestigate the theoretical properties of the WRK method, including the stability criteria, numerical error, and the numerical dispersion in solving the 1D and 2D scalarwave equations. We also compare it against other methods such as the high-ordercompact or so-called Lax-Wendroff correction (LWC) and the staggered-grid *** validate the efficiency and accuracy of the method, we simulate wave fields in the2D homogeneous transversely isotropic and heterogeneous isotropic media. We conclude that the WRK method can effectively suppress numerical dispersions and sourcenoises caused in using coarse grids and can further improve the original RK methodin terms of the numerical dispersion and stability condition.

关键词： WRK method seismic wavefield modeling anisotropy numerical dispersion

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焦作煤田地下水环境影响研究

能源与环保 2024年第5期46卷 64-70,77页

作者：黄继超邓晓颖孟飞张公河南省地质局生态环境地质服务中心河南郑州450053

地下水环境问题会导致可利用的地下水资源减少、地下水环境的恶化,从而对人类生活和环境造成严重影响。采用资料收集、开展水文地质调查、评价分析等方法,查明研究区地下水水文地质条件变化特征和矿区水文地质特征,分析地下水环境产生... 详细信息

地下水环境问题会导致可利用的地下水资源减少、地下水环境的恶化,从而对人类生活和环境造成严重影响。采用资料收集、开展水文地质调查、评价分析等方法,查明研究区地下水水文地质条件变化特征和矿区水文地质特征,分析地下水环境产生影响的各种因素。研究表明,由于煤矿开采导致地下水水位下降,已造成局部地区地下水径流场发生改变;水位下降导致河渠及泉水排泄地下水的形式消失;目前地下水位降落漏斗仍在扩大,郇封漏斗与温孟漏斗有相互连通而成为一个大复漏斗的趋势;煤矿开采致使地下水水质污染有向“深度”扩展的趋势;矿区排水造成疏干区扩大会进一步加剧诱发地面沉陷(塌陷)问题的产生。研究结果为保障水资源的可持续利用、促进经济、社会和环境的协调发展提供了科学依据。

关键词：地下水环境煤矿开采防治措施焦作市

专科护士主导老年吞咽障碍患者进食管理模式的研究

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广州医科大学学报 2024年第3期52卷 68-72页

作者：吴媛张素敏邓小莹张馨悦广州医科大学附属第五医院神经内科广州510700

目的:评估分析专科护士主导老年吞咽障碍患者进食管理模式的效果。方法:选择2022年6月至2023年6月我科收治的100例老年吞咽障碍患者病人作为研究对象,随机分成两组,分别为50例,其中对照组按照临床护理路径进行进食管理,而研究组由专科... 详细信息

目的:评估分析专科护士主导老年吞咽障碍患者进食管理模式的效果。方法:选择2022年6月至2023年6月我科收治的100例老年吞咽障碍患者病人作为研究对象,随机分成两组,分别为50例,其中对照组按照临床护理路径进行进食管理,而研究组由专科护士基于吞咽障碍筛查及评估进行进食模式管理,并从吞咽功能改善、营养健康改善状况、胃管成功拔除率三个指标进行对比。结果:研究组干预后吞咽功能改善显著优于对照组,营养状况各项指标均高于对照组,胃管成功拔除率高于对照组。结论:由专科护士主导多学科团队合作的吞咽障碍进食管理模式,能为制定“吞咽障碍评估-干预临床路径”提供参考依据,有利于制定规范化吞咽障碍临床护理管理流程;提高工作人员对吞咽障碍相关知识的掌握水平和关注意愿;为吞咽障碍患者提供全面、专业的医疗服务,减少并发症发生率、提高患者满意度和生活质量。

关键词：专科护士主导老年吞咽障碍进食模式管理

THE DESIGN OF AN ALL-DIGITAL PHASE-LOCKED LOOP WITH LOW JITTER BASED ON ISF ANALYSIS

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Journal of Electronics(China) 2008年第5期25卷 673-678页

作者： deng xiaoying Yang Jun Shi Longxing Chen Xin National ASIC Systems Engineering Technology Research Center Southeast University Nanjing 210005 China

A low jitter All-Digital Phase-Locked Loop （ADPLL） used as a clock generator is designed. The Digital-Controlled Oscillator （DCO） for this ADPLL is a seven-stage ring oscillator with the delay of each stage changeable. Based on the Impulse Sensitivity Function （ISF） analysis, an effective way is proposed to reduce the ADPLL＇s jitter by the careful design of the sizes of the inverters used in the DCO with a simple architecture other than a complex one. The ADPLL is implemented in a 0.18μm CMOS process with *** supply voltage, occupies 0.046mm^2 of on-chip area. According to the measured results, the ADPLL can operate from 108MHz to 304MHz, and the peak-to-peak jitter is 139ps when the DCO＇s output frequency is 188MHz.

关键词： All-Digital Phase Locked Loop (ADPLL) Digital Controlled Oscillator (DCO) Impulse Sensitivity Function (ISF) Thermal noise Jitter

Predicting the grades of Astragali radix using mass spectrometrybased metabolomics and machine learning

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Journal of Pharmaceutical Analysis 2021年第5期11卷 611-616页

作者： Xinyue Yu Jingxue Nai Huimin Guo Xuping Yang xiaoying deng Xia Yuan Yunfei Hua Yuan Tian Fengguo Xu Zunjian Zhang Yin Huang Key Laboratory of Drug Quality Control and Pharmacovigilance China Pharmaceutical UniversityMinistry of EducationNanjing210009China Department of Pharmaceutical Analysis School of PharmacyChina Pharmaceutical UniversityNanjing210009China Center for Biological Technology Anhui Agricultural UniversityHefei230036China

Astragali radix(AR,the dried root of Astragalus)is a popular herbal remedy in both China and the United *** commercially available AR is commonly classified into premium graded(PG)and ungraded(UG)ones only according to the *** uncover novel sensitive and specific markers for AR grading,we took the integrated mass spectrometry-based untargeted and targeted metabolomics approaches to characterize chemical features of PG and UG samples in a discovery set(n=16 batches).A series of five differential compounds were screened out by univariate statistical analysis,including arginine,calycosin,ononin,formononetin,and astragalosideⅣ,most of which were observed to be accumulated in PG samples except for astragalosideⅣ.Then,we performed machine learning on the quantification data of five compounds and constructed a logistic regression prediction ***,the external validation in an independent validation set of AR(n=20 batches)verified that the five compounds,as well as the model,had strong capability to distinguish the two grades of AR,with the prediction accuracy>90%.Our findings present a panel of meaningful candidate markers that would significantly catalyze the innovation in AR grading.

关键词： Astragali radix Metabolomics Machine learning Quality markers Prediction model

Random Noise Attenuation Based on Support Vector Regression and Adaptive Wiener Filtering

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Random Noise Attenuation Based on Support Vector Regression ...

Rapid Identification of a Candidate Gene Related to Fiber Strength Using a Superior Chromosome Segment Substitution Line from Gossypium hirsutum × Gossypium barbadense via Bulked Segregant RNA-Sequencing

2010 3rd International Conference on Computer and Electrical Engineering(ICCEE 2010)

作者： xiaoying deng Yong Luo Department of Electronic Engineering Beijing Institute of Technology Military Representative Office of PLA Twelfth Research Institute of CEC

For suppressing the random noise of the seismic data, we propose a composite method compounded of the 1-D least squares support vector regression (LS-SVR) and the 2-D adaptive Wiener filtering. The former can efficiently suppress the strong noise and recover the desired seismic wavelets trace by trace from time domain, but it does not consider the space-domain information;the latter can make full use of the correlations of multi-trace data from time-space domain, but for the case of the strong noise it works less well. The combination of two methods has complementary advantages. By simulation experiments, we find that compared with the results obtained by using the 1-D LS-SVR and the 2-D adaptive Wiener filtering separately, the results obtained by using the combined method have much higher signal-to-noise ratio (SNR) and better waveform quality.

关键词： Support vector regression adaptive Wiener filtering random noise reduction

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Phyton-International Journal of Experimental Botany 2021年第3期90卷 837-858页

作者： Qi Zhang Pengtao Li Aiying Liu Shaoqi Li Quanwei Lu Qun Ge Junwen Li Wankui Gong xiaoying deng Haihong Shang Yuzhen Shi Youlu Yuan State Key Laboratory of Cotton Biology Key Laboratory of Biological and Genetic Breeding of CottonThe Ministry of AgricultureInstitute of Cotton ResearchChinese Academy of Agricultural SciencesAnyang455000China School of Biotechnology and Food Engineering Anyang Institute of TechnologyAnyang455000China Zhengzhou Research Base State Key Laboratory of Cotton BiologyZhengzhou UniversityZhengzhou450001China

Cotton is the most widely cultivated commercial crop producing natural fiber around the *** a critical trait for fiber quality,fiber strength principally determined during the secondary wall thickening *** on the developed BC5F3:5 CSSLs(chromosome segment substitution lines)from Gossypium hirsutum CCRI36×*** Hai 1,the superior MBI9915 was chosen to construct the secondary segregated population BC7F2 with its recurrent parent CCRI36,which was subsequently subjected to Bulk segregant RNA-sequencing(BSR-seq)for rapid identification of candidate genes related to fiber strength.A total of 4 fiber-transcriptome libraries were separately constructed and sequenced,including two parents(CCRI36 and MBI9915)and two extreme pools at 20 DPA(days post anathesis).Through multiple comparisons,536 DEGs(differentially expressed genes)were overlapped at 20 ***-polymorphism comparison in mRNA sequences revealed 831 highly probable SNPs between two extreme pools related to fiber *** analysis was performed between two extreme pools with SNP-index *** correlated regions with 1981 annotation genes were obtained between two pools at 20 DPA,of which 12 common DEGs were similarly identified both between two parents and two *** gene(Gh_A07G0837)in the candidate region related to fiber strength was differentially expressed in both parents and extreme pools and involved in fiber strength development through reactive oxygen species(ROS)***-expression analysis of Gh_A07G0837 showed that Gh_A07G0837 may cooperate with other genes to regulate fiber *** reliability of BSR-seq results was validated by the quantitative real-time PCR(qRT-PCR)experiments on 5 common DGEs 20 ***-expressed analysis results indicated that there were some genes expressed especially low in MBI9915,resulting in good fiber *** on bulked segregant analysis on the extreme pools derived from superior CSSL population,this study indicates

关键词： Cotton Fiber strength CSSLs BSR-seq gene clone co-expressed analysis

Carbon enhanced nucleophilicity of Na_(3)V_(2)(PO_(4))_(3):A general approach for dendrite-free zinc metal anodes

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Journal of Energy Chemistry 2024年第4期91卷 203-212页

作者： Sijun Wang Lingzi Hu Xiaohui Li Dan Qiu Shunhang Qiu Qiancheng Zhou Wenwen deng xiaoying Lu Ze Yang Ming Qiu Ying Yu Institute of Nanoscience and Nanotechnology School of Physical Science and TechnologyCentral China Normal UniversityWuhan 430079HubeiChina School of Material Science and Engineering Suzhou University of Science and TechnologySuzhou 215000JiangsuChina Faculty of Science and Technology Technological and Higher Education Institute of Hong KongHong KongChina

Zincophilic property and high electrical conductivity are both very important parameters to design novel Zn anode for aqueous Zn-ion batteries(AZIBs).However,single material is difficult to exhibit zincophilic property and high electrical conductivity at the same ***,originating from theoretical calculation,a zincophilic particle regulation strategy is proposed to address these limitations and carbon coated Na_(3)V_(2)(PO_(4))_(3)is taken as an example to be a protective layer on zinc metal(NVPC@Zn).Na_(3)V_(2)(PO_(4))_(3)(NVP)is a common cathode material for Zn-ion batteries,which is *** materials not only offer an electron pathway to help Zn deposition onto NVPC surface,but also enhance the zinc nucleophilicity of Na_(3)V_(2)(PO_(4))_(3).Hence,this hybrid coating layer can tune zinc deposition and resist side reactions such as hydrogen generation and Zn metal ***,a symmetrical battery with NVPC@Zn electrode displays highly reversible plating/stripping behavior with a long cycle lifespan over 1800 h at2 mA cm^(-2),much better than carbon and Na_(3)V_(2)(PO_(4))_(3)solely modified Zn *** the Na_(3)V_(2)(PO_(4))_(3)is replaced with zincophobic Al2O3or zincophilic V2O3,the stability of the modified zinc anodes is also *** strategy expands the option of zincophilic materials and provides a general and effective way to stabilize the Zn electrode.

关键词： Zinc-ion batteries Zinc anode Carbon enhanced nucleophilicity Zincophilic particle regulation