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Uncertainty analysis for the calculation of marine environmental design parameters in the South China Sea

Journal of Oceanology and Limnology 2023年第2期41卷 427-443页

作者： Guilin LIU Xinsheng ZHOU Yi KOU Fang WU daniel zhao Yu XU College of Engineering Ocean University of ChinaQingdao 266071China Dornsife College University of Southern CaliforniaLos AngelesCA 90089USA Statistics and Applied Probability University of California Santa BarbaraSanta BarbaraCA 93106USA Department of Mathematics Harvard UniversityCambridgeMA 02138USA Shandong Key Laboratory of Marine Engineering Ocean University of ChinaQingdao 266071China

The calculation results of marine environmental design parameters obtained from different data sampling methods,model distributions,and parameter estimation methods often vary *** better analyze the uncertainties in the calculation of marine environmental design parameters,a general model uncertainty assessment method is *** proposed a new multivariate model uncertainty assessment method for the calculation of marine environmental design *** method divides the overall model uncertainty into two categories:aleatory uncertainty and epistemic *** aleatory uncertainty of the model is obtained by analyzing the influence of the number and the dispersion degree of samples on the information entropy of the *** epistemic uncertainty of the model is calculated using the information entropy of the model itself and the prediction *** advantages of this method are that it does not require many-year-observation data for the marine environmental elements,and the method can be used to analyze any specific factors that cause model *** show that by applying the method to the South China Sea,the aleatory uncertainty of the model increases with the number of samples and then stabilizes.A positive correlation was revealed between the dispersion of the samples and the aleatory uncertainty of the *** the distribution of the model and the parameter estimation results of the model have significant effects on the epistemic uncertainty of the *** the goodness-of-fit of the model is relatively close,the best model can be selected according to the criterion of the lowest overall uncertainty of the models,which can both ensure a better model fit and avoid too much uncertainty in the model calculation *** presented multivariate model uncertainty assessment method provides a criterion to measure the advantages and disadvantages of the marine environmental design parameter calculation model from the aspect of u

关键词： South China Sea marine environmental design parameters model uncertainty information entropy Monte Carlo method

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Assessment of typhoon storm surge disaster scale based on expansion model

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Journal of Oceanology and Limnology 2023年第2期41卷 518-531页

作者： Guilin LIU Xiuxiu NONG Yi KOU Fang WU daniel zhao Zongbing YU College of Engineering Ocean University of ChinaQingdao 266100China Dornsife College University of Southern CaliforniaLos Angeles CA 90089USA Statistics and Applied Probability University of California Santa BarbaraSanta Barbara CA 93106USA Department of Mathematics Harvard UniversityCambridge MA 02138USA State Key Laboratory of Coastal and Offshore Engineering Dalian University of TechnologyDalian 116024China

The South China Sea suffers strongly from the typhoon storm surge disasters in China,and its northern coastal areas are facing severe ***,it is necessary and urgent to establish an assessment system for rating typhoon storm surge *** constructed an effective and reliable rating assessment system for typhoon storm surge disaster based on the theories of over-threshold,distribution function family,and composite extreme *** over-threshold sample was used as the basis of data analysis,the composite extreme value expansion model was used to derive the design water increment,and then the disaster level was delineated based on the return period *** results of the extreme value model comparison show that the Weibull-Pareto distribution is more suitable than the classical extreme value distribution for fitting the over-threshold *** results of the return period projection are relatively stable based on different analysis *** the 10 typhoon storm surges as examples,they caused landfall in the Guangdong area in the past 10 *** results of the assessment ranking indicate that the risk levels based on the return period levels obtained from different distributions are generally *** classifying low-risk areas,the classification criteria of the State Oceanic Administration,China(SOA,2012)are more *** the high-risk areas,the results of the assessment ranking based on return period are more consistent with those of the SOA.

关键词： risk classification South China Sea typhoon storm surge extreme value expansion over threshold sampling

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Maximum Entropy Distribution Function and Uncertainty Evaluation Criteria

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China Ocean Engineering 2021年第2期35卷 238-249页

作者： CHEN Bai-yu KOU Yi zhao daniel WU Fang WANG Li-ping LIU Gui-lin College of Engineering University of California BerkeleyBerkeley 94720USA Dornsife College University of Southern CaliforniaLos Angeles 90007USA Department of Mathematics Harvard UniversityCambridge 02138USA Statistics and applied probability University of California Santa BabaraSanta Babara 93106USA School of Mathematical Sciences Ocean University of ChinaQingdao 266100China College of Engineering Ocean University of ChinaQingdao 266100China

Marine environmental design parameter extrapolation has important applications in marine engineering and coastal disaster *** distribution models used for environmental design parameter usually pass the hypothesis tests in statistical analysis,but the calculation results of different distribution models often vary *** this paper,based on the information entropy,the overall uncertainty test criteria were studied for commonly used distributions including Gumbel,Weibull,and Pearson-III *** improved method for parameter estimation of the maximum entropy distribution model is proposed on the basis of moment *** study in this paper shows that the number of sample data and the degree of dispersion are proportional to the information entropy,and the overall uncertainty of the maximum entropy distribution model is minimal compared with other models.

关键词： maximum entropy distribution model uncertainty information entropy evaluation criterion

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A social computing method for energy safety

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Journal of Safety Science and Resilience 2024年第1期5卷 64-82页

作者： Pengfei zhao Shuangqi Li Zhidong Cao Paul Jen-Hwa Hu daniel Dajun Zeng Da Xie Yichen Shen Jiangfeng Li Tianyi Luo Institute of Automation Chinese Academy of SciencesUniversity of Chinese Academy of SciencesBeijing 100090China Systems Engineering Cornell UniversityIthacaNY 14853USA David Eccles School of Business the University of UtahUtahUSA Department of Electrical Engineering Shanghai Jiao Tong UniversityShanghai 200240China China University of Mining and Technology China

Information and communication technologies enable the transformation of traditional energy systems into cyber-physical energy systems(CPESs),but such systems have also become popular targets of ***,available methods for evaluating the impacts of cyberattacks suffer from limited resilience,efficacy,and practical *** mitigate their potentially disastrous consequences,this study suggests a two-stage,discrepancy-based optimization approach that considers both preparatory actions and response measures,integrating concepts from social *** proposed Kullback-Leibler divergence-based,distributionally robust optimization(KDR)method has a hierarchical,two-stage objective function that incorporates the operating costs of both system infrastructures(e.g.,energy resources,reserve capacity)and real-time response measures(e.g.,load shedding,demand-side management,electric vehicle charging station management).By incorporating social computing principles,the optimization framework can also capture the social behavior and interactions of energy consumers in response to *** preparatory stage entails day-ahead operational decisions,leveraging insights from social computing to model and predict the behaviors of individuals and communities affected by potential *** mitigation stage generates responses designed to contain the consequences of the attack by directing and optimizing energy use from the demand side,taking into account the social context and preferences of energy consumers,to ensure resilient,economically efficient CPES *** method can determine optimal schemes in both stages,accounting for the social dimensions of the *** original disaster mitigation model uses an abstract formulation to develop a risk-neutral model that characterizes cyberattacks through KDR,incorporating social computing techniques to enhance the understanding and response to cyber *** approach can mitigate the impacts more

关键词： Cyberattacks Cyber-physical energy systems Distributionally robust optimization False data injections Two-stage modeling Social computing

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Low-temperature replacement construction of three-dimensional corrosion-resistant interface for deeply rechargeable Zn metal batteries

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Nano Materials Science 2024年第3期6卷 329-336页

作者： Jinze Li daniel Rohrens Gianluca Dalfollo Xiaochao Wu Ziheng Lu Qiang Gao Bo Han Ruimin Sun Chenggang Zhou Jindi Wang zhao Cai Faculty of Materials Science and Chemistry China University of GeosciencesWuhan430074China Institute of Inorganic Chemistry RWTH Aachen UniversityAachen52074Germany Microsoft Research AI4Science Beijing10080China Institute of New Energy on Chemical Storage and Power Sources College of Applied Chemistry and Environmental EngineeringYancheng Teachers UniversityYancheng224000China

Aqueous Zn batteries are promising candidates for grid-scale renewable energy *** electrodes have been widely investigated and applied as anode materials for aqueous Zn batteries,however,they suffer from limited surface area and severe interfacial issues including metallic dendrites and corrosion side reactions,limiting the depth of discharge(DOD)of the foil electrode ***,a low-temperature replacement reaction is utilized to in-situ construct a three-dimensional(3D)corrosion-resistant interface for deeply rechargeable Zn foil ***,the deliberate low-temperature environment controlled the replacement rate between polycrystalline Zn metal and oxalic acid,producing a Zn foil electrode with distinct 3D corrosion-resistant interface(3DCI-Zn),which differed from conventional two-dimensional(2D)protective structure and showed an order of magnitude higher surface ***,the 3DCI-Zn electrode exhibited dendrite-free and anticorrosion properties,and achieved stable plating/stripping performance for 1000 h at 10 mA cm^(-2)and 10 mAh cm^(-2)with a remarkable DOD of 79%.After pairing with a MnO2cathode with a high areal capacity of 4.2 mAh cm^(-2),the pouch cells delivered 168 Wh L^(-1)and a capacity retention of 89.7%after 100 cycles with a low negative/positive(N/P)ratio of 3:1.

关键词： Aqueous batteries Foil electrodes Depth of discharge Dendrites Corrosion side reactions

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Diagnosis,treatment and prevention of severe acute respiratory syndrome coronavirus 2 infection in children:experts'consensus statement updatedforthe Omicron variant

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World Journal of Pediatrics 2024年第3期20卷 272-286页

作者： Rong-Meng Jiang Zheng-De Xie Yi Jiang Xiao-Xia Lu Run-Ming Jin Yue-Jie Zheng Yun-Xiao Shang Bao-Ping Xu Zhi-Sheng Liu Gen Lu Ji-Kui Deng Guang-Hua Liu Xiao-Chuan Wang Jian-She Wang Lu-zhao Feng Wei Liu Yi Zheng Sai-Nan Shu Min Lu Wan-Jun Luo Miao Liu Yu-Xia Cui Le-Ping Ye A-Dong Shen Gang Liu Li-Wei Gao Li-Juan Xiong Yan Bai Li-Kai Lin Zhuang Wei Feng-Xia Xue Tian-You Wang Dong-Chi zhao Jian-Bo Shao daniel Kwok-keung Ng Gary Wing-kin Wong Zheng-Yan zhao Xing-Wang Li Yong-Hong Yang Kun-Ling Shen Diagnosis and Treatment Center of Infectious Diseases Beijing Ditan HospitalCapital Medical UniversityBeijing 100015China Beijing Key Laboratory of Pediatric Respiratory Infection Diseases Key Laboratory of Major Diseases in ChildrenMinistry of EducationNational Clinical Research Center for Respiratory DiseasesResearch Unit of Critical Infection in ChildrenChinese Academy of Medical Sciences2019RU016Laboratory of Infection and VirologyBeijing Pediatric Research InstituteBeijing Children's HospitalCapital Medical UniversityNational Center for Children's HealthBeijing 100045China Department of Pediatrics Renmin Hospital of Wuhan UniversityWuhan 430060China Department of Respiratory Wuhan Children's HospitalTongji Medical CollegeHuazhong University of Science and TechnologyWuhan 430016China Department of Pediatrics Union HospitalTongji Medical CollegeHuazhong University of Science and TechnologyWuhan 430022China Department of Respiratory Shenzhen Children's HospitalShenzhen 518038China Department of Pediatric Respiratory Shengjing Hospital Affiliated to China Medical UniversityShenyang 110004China Department of Respiratory Beijing Children's HospitalCapital Medical UniversityNational Clinical Research Center for Respiratory DiseasesNational Center for Children's HealthBeijing 100045China Department of Neurology Wuhan Children's HospitalTongji Medical CollegeHuazhong University of Science and TechnologyWuhan 430016China Department of Respiratory Guangzhou Women and Children's Medical CenterGuangzhou 510623China Department of Infectious Diseases Shenzhen Children's HospitalShenzhen 518038China Department of Pediatrics Fujian Branch of Shanghai Children's Medical CenterFujian Children's HospitalFuzhou350005China Department of Clinical Immunology and Allergy Children's Hospital of Fudan UniversityNational Center for Children's HealthShanghai 201102China Department of Infectious Diseases Children's Hospital of Fudan UniversityNational Center for Children's Health.Shanghai

It has been more than 3 years since the novel coronavirus(SARS-CoV-2)pandemic raged *** coronavirus disease 2019(COVID-19)has greatly influenced human *** to data from the World Health Organization(WHO),there were ove... 详细信息

关键词： prevention infection statement

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Multi-soliton solutions of coupled Lakshmanan-Porsezian-daniel equations with variable coefficients under nonzero boundary conditions

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Chinese Physics B 2024年第8期33卷 137-152页

作者：赵会超马雷诺解西阳 Department of Mathematics and Physics and Hebei Key Laboratory of Physics and Energy TechnologyNorth China Electric Power UniversityBaoding 071003China

This paper aims to investigate the multi-soliton solutions of the coupled Lakshmanan–Porsezian–daniel equations with variable coefficients under nonzero boundary *** equations are utilized to model the phenomenon of nonlinear waves propagating simultaneously in non-uniform optical *** analyzing the Lax pair and the Riemann–Hilbert problem,we aim to provide a comprehensive understanding of the dynamics and interactions of solitons of this ***,we study the impacts of group velocity dispersion or the fourth-order dispersion on soliton *** appropriate parameter selections,we observe various nonlinear phenomena,including the disappearance of solitons after interaction and their transformation into breather-like solitons,as well as the propagation of breathers with variable periodicity and interactions between solitons with variable periodicities.

关键词： soliton Riemann-Hilbert problem non-zero boundary conditions coupled Lakshmanan-Porsezian-daniel equation

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Heavy metals in agricultural soil in China: A systematic review and meta-analysis

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Eco-Environment & Health 2022年第4期1卷 219-228页

作者： Moyan Wen Ziqi Ma daniel BGingerich Xiao zhao Dongye zhao College of Water Resources and Civil Engineering China Agricultural UniversityBeijing 100083China Department of Civil Environmental and Geodetic EngineeringThe Ohio State UniversityColumbusOH 43210USA Department of Integrated Systems Engineering The Ohio State UniversityColumbusOH 43210USA Environmental Engineering Program Department of Civil EngineeringAuburn UniversityAuburnAL 36849USA

Research about farmland pollution by heavy metals/metalloids in China has drawn growing ***,there was rare information on spatiotemporal evolution and pollution levels of heavy metals in the major grainproducing *** extracted and examined data from 276 publications between 2010 and 2021 covering five major grain-producing regions in China from 2010 to *** evolution characteristics of main heavy metals/metalloids was obtained by *** addition,subgroup analyses were carried out to study preliminary correlations related to accumulation of the ***(Cd)was found to be the most prevailing pollutant in the regions in terms of both spatial distribution and temporal *** Huang-Huai-Hai Plain was the most severely *** of Cd,mercury(Hg)and copper(Cu)increased from 2010 to 2015 when compared with the 1990 background ***,the levels of five key heavy metals(Cd,Cu,Hg,lead[Pb]and zinc[Zn])showed increasing trends from 2016 to 2021 in all five *** pH and mean annual precipitation had variable influences on heavy metal *** soil and areas with less rainfall faced higher pollution *** cropped with mixed species showed smaller effect sizes of heavy metals than those with single upland crop,suggesting that mixed farmland use patterns could alleviate the levels of heavy metals in *** various soil remediation efforts,farmland projects only held a small market *** findings are important to support the research of risk assessment,regulatory development,pollution prevention,fund allocation and remediation actions.

关键词： Heavy metal Agricultural soil Soil pollution Meta-analysis Spatiotemporal evolution

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Nanoscale chemical segregation to twin interfaces in τ-MnAl-C and resulting effects on the magnetic properties

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Journal of Materials Science & Technology 2023年第3期134卷 22-32页

作者： Panpan zhao Markus Gusenbauer Harald Oezelt daniel Wolf Thomas Gemming Thomas Schrefl Kornelius Nielsch Thomas George Woodcock Leibniz IFW Dresden Helmholtzstr.20Dresden 01069Germany TU Dresden Institute of Materials ScienceDresden 01062Germany Department for Integrated Sensor Systems Danube University KremsKrems an der Donau 3500Austria

In this study,aberration-corrected scanning transmission electron microscopy coupled with electron energy-loss spectroscopy(STEM-EELS)was used to investigate the atomistic structure and chemical com-position of true twin and order twin boundaries in ferromagneticτ-*** twins and order twins were distinguished based on the diffraction patterns using *** elemental segregation was observed at the coherent true twin boundary but some Mn enrichment within a region of about 1.5-2 nm was found at the incoherent true twin boundary.A transition region with Mn enrichment about 4-6 nm wide was found at the order twin boundary.A carbon cluster with a size of around 5 nm was also found at the twin *** simulations were conducted to study the effect of this chemical seg-regation at twin interfaces on the magnetic *** results showed that the coercivity tends to increase with increasing structural and chemical disorder at the interface.

关键词： τ-MnAl-C Twin boundaries Elemental segregation STEM-EELS Micromagnetic simulations

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Molecular phylogeny and inflorescence evolution of Prunus(Rosaceae)based on RAD-seq and genome skimming analyses

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Plant Diversity 2023年第4期45卷 397-408页

作者： Na Su Richard G.J.Hodel Xi Wang Jun-Ru Wang Si-Yu Xie Chao-Xia Gui Ling Zhang zhao-Yang Chang Liang zhao daniel Potter Jun Wen College of Life Sciences Northwest A&F UniversityYangling 712100China Herbarium of Northwest A&F University Yangling 712100China Department of Botany National Museum of Natural HistoryMRC 166Smithsonian InstitutionWashingtonDC 20013-7012USA College of Life Sciences Tarim UniversityAlaer 843300China Department of Plant Sciences MS2University of CaliforniaDavisCA 95616USA

Prunus is an economically important genus widely distributed in the temperate Northern *** studies on the genus using a variety of loci yielded conflicting phylogenetic ***,we generated nuclear reduced representation sequencing data and plastid genomes for 36 Prunus individuals and two *** nuclear and plastome data recovered a well-resolved *** species were divided into three main clades corresponding to their inflorescence types,-the racemose group,the solitary-flower group and the corymbose group-with the latter two sister to one *** was inferred to have diversified initially in the Late Cretaceous around 67.32 million years *** diversification of the three major clades began between the Paleocene and Miocene,suggesting that paleoclimatic events were an important driving force for Prunus *** state reconstructions revealed that the most recent common ancestor of Prunus had racemose inflorescences,and the solitary-flower and corymb inflorescence types were derived by reduction of flower number and suppression of the rachis,*** also tested the hybrid origin hypothesis of the racemose group proposed in previous *** has undergone extensive hybridization events,although it is difficult to identify conclusively specific instances of hybridization when using SNP data,especially deep in the *** study provides well-resolved nuclear and plastid phylogenies of Prunus,reveals substantial cytonuclear discord at shallow scales,and sheds new light on inflorescence evolution in this economically important lineage.

关键词： Prunus Rosaceae RAD-Seq Chloroplast genome Hybridization Inflorescence evolution

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