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Prediction of discharge in a tidal river using the LSTM-based sequence-to-sequence models

Acta Oceanologica Sinica 2024年第7期 40-51页

作者： Zhigao Chen Yan Zong Zihao Wu Zhiyu kuang Shengping Wang Key Laboratory of Mine Environmental Monitoring and Improving around Poyang Lake of Ministry of Natural Resources East China University of Technology School of Surveying and Geoinformation Engineering East China University of Technology

The complexity of river-tide interaction poses a significant challenge in predicting discharge in tidal rivers. Long short-term memory(LSTM) networks excel in processing and predicting crucial events with extended intervals and time delays in time series data. Additionally, the sequence-to-sequence(Seq2Seq) model, known for handling temporal relationships, adapting to variable-length sequences, effectively capturing historical information, and accommodating various influencing factors, emerges as a robust and flexible tool in discharge forecasting. In this study, we introduce the application of LSTM-based Seq2Seq models for the first time in forecasting the discharge of a tidal reach of the Changjiang River(Yangtze River) Estuary. This study focuses on discharge forecasting using three key input characteristics: flow velocity, water level, and discharge, which means the structure of multiple input and single output is adopted. The experiment used the discharge data of the whole year of 2020, of which the first 80% is used as the training set, and the last 20% is used as the test set. This means that the data covers different tidal cycles, which helps to test the forecasting effect of different models in different tidal cycles and different runoff. The experimental results indicate that the proposed models demonstrate advantages in long-term, mid-term, and short-term discharge forecasting. The Seq2Seq models improved by 6%–60% and 5%–20% of the relative standard deviation compared to the harmonic analysis models and improved back propagation neural network models in discharge prediction, respectively. In addition, the relative accuracy of the Seq2Seq model is 1% to 3% higher than that of the LSTM model. Analytical assessment of the prediction errors shows that the Seq2Seq models are insensitive to the forecast lead time and they can capture characteristic values such as maximum flood tide flow and maximum ebb tide flow in the tidal cycle well. This indicates the sign

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RDH12-associated retinal degeneration caused by a homozygous pathogenic variant of 146C>T and literature review

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International Journal of Ophthalmology(English edition) 2024年第2期17卷 311-316页

作者： Jin Li Yi-Qun Hu Hong-Bo Cheng Ting Wang Long-Hao kuang Tao Huang Xiao-He Yan Shenzhen Eye Hospital Jinan UniversityShenzhen Eye InstituteShenzhen 518040Guangdong ProvinceChina

AIM:To describe the clinical,electrophysiological,and genetic features of an unusual case with an RDH12 homozygous pathogenic variant and reviewed the characteristics of the patients reported with the same ***:The patient underwent a complete ophthalmologic examination including best-corrected visual acuity,anterior segment and dilated fundus,visual field,spectral-domain optical coherence tomography(OCT)and electroretinogram(ERG).The retinal disease panel genes were sequenced through chip capture high-throughput sequencing and Sanger sequencing was used to confirm the *** we reviewed the characteristics of the patients reported with the same ***:A 30-year male presented with severe early retinal degeneration who complained night blindness,decreased visual acuity,vitreous floaters and amaurosis *** best corrected vision was 0.04 OD and 0.12 OS,*** fundus photo and OCT showed bilateral macular atrophy but larger areas of macular atrophy in the left *** shows bilateral symmetrical *** revealed that the amplitudes of a-and b-wave were severely *** ERG showed decreased amplitudes in the local macular area.A homozygous missense variant c.146C>T(chr14:68191267)was *** clinical characteristics of a total of 13 patients reported with the same pathologic variant ***:An unusual patient with a homozygous pathogenic variant in the c.146C>T of RDH12 which causes late-onset and asymmetric retinal degeneration are *** clinical manifestations of the patient with multimodal retinal imaging and functional examinations have enriched our understanding of this disease.

关键词： RDH12 gene inherited retinal degeneration homozygous pathogenic variant clinical feature multi-mode imaging

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挤入还是挤出:基本医疗卫生服务影响商业健康险消费效应分析

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保险研究 2024年第3期 71-86页

作者：邢晓卫匡贤明东北大学工商管理学院

基本医疗卫生服务与商业健康保险发展的关系对中国国民健康水平的提升和健康中国行动的实现具有重要意义。本文探讨基本医疗卫生服务对商业健康保险消费的影响。研究发现:商业健康保险消费具有时空依赖特征;基本医疗卫生服务与本地和周... 详细信息

基本医疗卫生服务与商业健康保险发展的关系对中国国民健康水平的提升和健康中国行动的实现具有重要意义。本文探讨基本医疗卫生服务对商业健康保险消费的影响。研究发现:商业健康保险消费具有时空依赖特征;基本医疗卫生服务与本地和周边地区的商业健康保险消费均存在U形关系;当基本医疗卫生服务达到特定阈值后,呈现本地和周边地区的双重“挤入”效应,但本地“挤入”效应更易实现;居民消费和风险意识是基本医疗卫生服务影响商业健康保险消费的重要中介变量,即基本医疗卫生服务通过改变居民消费和风险意识影响商业健康保险消费;基本医疗卫生服务影响商业健康保险消费的程度与方向,还受健康风险损失、互联网冲击、区域禀赋、健康保险供给主体和健康风险承载主体等因素影响。基于此,本文提出平衡资源配置、明确基本医疗卫生服务“基本”和“非基本”界限、关注居民个体行为和构建商业健康保险大生态系统等建议。

关键词：基本医疗卫生服务商业健康保险挤入挤出

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Application of wastewater-based epidemiological monitoring of COVID-19 for disease surveillance in the city

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Frontiers of Environmental Science & Engineering 2024年第8期18卷 81-87页

作者： Heng Chen Zhenhua Chen Liwen Hu Fengzhu Tang Dan kuang Jiayi Han Yao Wang Xiao Zhang Yue Cheng Jiantong Meng Rong Lu Lan Zhang Chengdu Workstation for Emerging Infectious Disease Control and Prevention Chinese Academy of Medical SciencesChengdu 610047China Chengdu Center for Disease Control and Prevention Chengdu 610047China National Key Laboratory of Intelligent Tracking and Forecasting for Infectious Diseases Beijing 100050China National Institute of Environmental Health Chinese Center for Disease Control and PreventionBeijing 100050China

Wastewater-based surveillance serves as a supplementary approach to clinical surveillance of COVID-19 during the *** study aimed to track the prevalence of the disease and the viral genetic variability through wastewater-based surveillance in the post-epidemic *** January to December 2023,samples were collected from the influent lines of two wastewater treatment plants(WWTPs),concentrated using PEG8000,and subjected to detection of the target genes ORF 1ab and N of SARS-CoV-2 via reverse transcriptional quantitative PCR(RT-qPCR).For next-generation sequencing(NGS),high-quality samples from both wastewater and clinical patients were *** analysis were performed using R software to evaluate the correlation between the SARSCoV-2 RNA concentrations in wastewater and positive rate of reported cases,indicating a positive *** diversity patterns of SARS-CoV-2 in wastewater resembled those in the patient source based on Principal Coordinates Analysis(PCoA)with three clusters for different *** rise of RNA concentration in wastewater indicates the growth of cases and the emergence of new variants,serving as an early warning of potential viral mutations,disease outbreaks even possible ***,the genomic surveillance of wastewater could help identify new variants that may not be captured through population monitoring,especially when sample sizes are ***,surveillance of SARS-CoV-2 in municipal wastewater has emerged as a reliable,earlywarning monitoring system for COVID-19 in the post-epidemic era.

关键词： Wastewater-based epidemiology Monitoring COVID-19 Post-epidemic era

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Enhancing selectivity in acidic CO_(2)electrolysis:Cation effects and catalyst innovation

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Chinese Journal of Catalysis 2024年第8期63卷 61-80页

作者： Zichao Huang Tinghui Yang yingbing Zhang Chaoqun Guan Wenke Gui Min kuang Jianping Yang State Key Laboratory for Modification of Chemical Fibers and Polymer Materials College of Materials Science and EngineeringDonghua UniversityShanghai 201620China

The electrochemical reduction of CO_(2)(eCO_(2)R)under ambient conditions is crucial for reducing carbon emissions and achieving carbon *** progress with alkaline and neutral elec-trolytes,their efficiency is limited by(bi)carbonates *** media have emerged as a solution,addressing the(bi)carbonates challenge but introducing the issue of the hydrogen evolu-tion reaction(HER),which reduces CO_(2)conversion efficiency in acidic *** review focuses on enhancing the selectivity of acidic CO_(2)*** commences with an overview of the latest advancements in acidic CO_(2)electrolysis,focusing on product selectivity and electrocatalytic activity *** then delves into the critical factors shaping selectivity in acidic CO_(2)elec-trolysis,with a special emphasis on the influence of cations and catalyst ***,the research challenges and personal perspectives of acidic CO_(2)electrolysis are suggested.

关键词： Acidic CO_(2)electrolysis High selectivity Cation effects Catalyst design Competitive HER

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从匹配到适应:高职实习生角色适应的应为与可为

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教育与职业 2024年第16期1064卷 59-65页

作者：吴君逸匡瑛邓卓华东师范大学职业教育与成人教育研究所上海200062

高职实习生角色不适现象,不利于提升职业教育实习质量。基于多重理论视角,可以从个体、环境和互动三大要素建构理论框架,明晰高职实习生角色适应的内部发展逻辑,准确把握影响角色适应的重点和痛点。结合理论架构的系统审思与现实调研,... 详细信息

高职实习生角色不适现象,不利于提升职业教育实习质量。基于多重理论视角,可以从个体、环境和互动三大要素建构理论框架,明晰高职实习生角色适应的内部发展逻辑,准确把握影响角色适应的重点和痛点。结合理论架构的系统审思与现实调研,廓清实习生行为“失当”、表现“失范”以及心理“失落”问题背后的根源及破解逻辑。在我国职业教育高质量发展的时代诉求下,政府应聚焦关键矛盾以规约外部环境、学校应锚定角色定位且找准建设目标、企业应明确实习期望并规范实习管理,以期解决高职实习生角色适应问题,从而有效提升高职学生实习质量。

关键词：高职实习生角色适应

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Controlled Synthesis of Proton-Conductive Porous Organic Polymer Gels via Electrostatically Stabilized Colloidal Formation

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CCS Chemistry 2024年第7期6卷 1767-1775页

作者： Bin Chen Yifeng kuang Lu Liu Linkun Cai Zaoming Wang Panchao Yin Liangbin Huang Cheng Gu State Key Laboratory of Luminescent Materials and Devices Institute of Polymer Optoelectronic Materials and DevicesSouth China University of TechnologyGuangzhou 510640 College of Polymer Science and Engineering State Key Laboratory of Polymer Materials EngineeringSichuan UniversityChengdu 610065 Key Laboratory of Functional Molecular Engineering of Guangdong Province School of Chemistry and Chemical EngineeringSouth China University of TechnologyGuangzhou 510641 South China Advanced Institute for Soft Matter Science and Technology South China University of TechnologyGuangzhou 510640 Institute for Integrated Cell-Material Sciences Institute for Advanced StudyKyoto UniversityKyoto 606-8501

Porous organic polymers(POPs)have attracted extensive interest due to their structural diversity and predesigned ***,the majority of POPs are synthesized as insoluble and unprocessable powders,which greatly impede their advanced applications because of limited mass transport and inadaptation for device ***,we report a controlled synthetic strategy of macroscopic POP gels by a cation-stabilized colloidal formation mechanism,which is widely adaptable to a large variety of tetra-/tri-amino build blocks for the synthesis of Tröger’s base-linked POP gels,aerogels,and ionic *** POP gels combined the integrated advantages of hierarchically porous structures and tailorable mechanical stiffness,whereas they could load substantial amounts of phosphoric acids and construct unimpeded transport pathways for proton conduction,exhibiting unprecedented proton conductivity at subzero *** strategy offers a new solution to the intractable processing issues of POPs toward device applications with cutting-edge performances.

关键词： porous organic polymers Tröger’s base linkage gels superprotonic conduction subzero temperatures

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小尺度水平井钻柱动力学实验台架研制及应用

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石油钻探技术 2024年第4期52卷 15-23页

作者：况雨春张涛林伟西南石油大学机电工程学院四川成都610500

水平井钻井过程中钻头与钻柱的运动规律非常复杂,通过现场测试研究钻头与钻柱振动的方法成本高,无法准确解耦各因素,且数据采样率低,不能进行系统分析。因此,以物理相似为基础,设计了一套基于微钻头−钻柱−岩石的小尺度水平井钻柱动力学... 详细信息

水平井钻井过程中钻头与钻柱的运动规律非常复杂,通过现场测试研究钻头与钻柱振动的方法成本高,无法准确解耦各因素,且数据采样率低,不能进行系统分析。因此,以物理相似为基础,设计了一套基于微钻头−钻柱−岩石的小尺度水平井钻柱动力学模拟实验台架;在钻柱上设计分段套管,模拟套管对钻柱的约束;为更加真实反应钻头与岩石互作用对钻杆及钻头振动的影响,设计微型PDC钻头进行模拟破岩;开展了水平井钻柱室内试验研究,分析了钻柱系统的耦合振动、转速及钻压对钻柱系统振动的影响规律。结果表明:钻头的轴向振动对钻头的扭转振动有较大的影响,且当钻柱发生扭转振动时,其功率谱密度明显高于匀速转动下钻头的功率谱密度;随着转速增大,钻头和钻柱的横向振动加速度也随之增大,钻头扭转振动在主频上的振动幅值也随之增大;随着钻压增大,钻头粘滑振动和横向振动加剧,但对轴向振动的影响不明显。

关键词：水平井物理相似钻柱动力学实验台架钻柱振动

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Pleistocene glaciation advances the cryptic speciation of Stellera chamaejasme *** a major biodiversity hotspot

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Journal of Integrative Plant Biology 2024年第6期66卷 1192-1205页

作者： Santosh Kumar Rana Hum Kala Rana Jacob BLandis Tianhui kuang Juntong Chen Hengchang Wang Tao Deng Charles C.Davis Hang Sun CAS Key Laboratory for Plant Diversity and Biogeography of East Asia Kunming Institute of BotanyChinese Academy of SciencesKunming 650201China Arkansas Biosciences Institute Arkansas State UniversityJonesboroArkansas 72401USA School of Integrative Plant Science Section of Plant Biology and the L.H.Bailey HortoriumCornell UniversityIthacaNew York 14853USA BTI Computational Biology Center Boyce Thompson InstituteIthacaNew York 14853USA CAS Key Laboratory of Plant Germplasm Enhancement and Specialty Agriculture Chinese Academy of SciencesWuhan Botanical GardenWuhan 430074China Department of Organismic and Evolutionary Biology HerbariaHarvard UniversityCambridgeMassachusetts 02138USA

The mountains of Southwest China comprise a significant large mountain range and biodiversity hotspot imperiled by global climate *** high species diversity in this mountain system has long been attributed to a complex set of factors,and recent large-scale macroevolutionary investigations have placed a broad timeline on plant diversification that stretches from 10 million years ago(Mya)to the *** our increasing understanding of the temporal mode of speciation,finer-scale populationlevel investigations are lacking to better refine these temporal trends and illuminate the abiotic and biotic influences of cryptic *** is largely due to the dearth of organismal sampling among closely related species and populations,spanning the incredible size and topological heterogeneity of this *** study dives into these evolutionary dynamics of speciation using genomic and ecomorphological data of Stellera chamaejasme *** identified four previously unrecognized cryptic species having indistinct morphological traits and large metapopulation of evolving lineages,suggesting a more recent diversification(~2.67-0.90 Mya),largely influenced by Pleistocene glaciation and biotic *** factors likely influenced allopatric speciation and advocated cyclical warming–cooling episodes along elevational gradients during the *** study refines the evolutionary timeline to be much younger than previously implicated and raises the concern that projected future warming may influence the alpine species diversity,necessitating increased conservation efforts.

关键词： cryptic speciation glacial-interglacial Hengduan Mountains north-south migration Stellera chamaejasme

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Potential morphological responses of an artificial beach to a flood in extreme events:field observation and numerical modelling

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Acta Oceanologica Sinica 2024年第7期 78-92页

作者： Jiadong Fan Cuiping kuang Xuejian Han Lixin Gong Huixin Liu Jiabo Zhang College of Civil Engineering Tongji University The Eighth Geological Brigade Hebei Geological and Mineral Exploration Development Bureau Marine Ecological Restoration and Smart Ocean Engineering Research Center of Hebei Province

Conch Island is a typical artificial island at the Tanghe Estuary in Bohai Sea, China. To improve natural environment and boost local tourism, beach nourishment will be applied to its north-western shore. The projected beach is landward and opposite to the Jinmeng Bay Beach. Nowadays, with climate changes, frequent heavy rainfalls in Hebei Province rise flood hazards at the Tanghe Estuary. Under this circumstance, potential influences on the projected beach of a flood are investigated for sustainable managements. A multi-coupled model is established and based on the data from field observations, where wave model, flow model and multifraction sediment transport model are included. In addition, the impacts on the projected beach of different components in extreme events are discussed, including the spring tides, storm winds, storm waves, and sediment inputs. The numerical results indicate the following result.(1) Artificial islands protect the coasts from erosion by obstructing landward waves, but rise the deposition risks along the target shore.(2) Flood brings massive sediment inputs and leads to scours at the estuary, but the currents with high sediment concentration contribute to the accretions along the target shore.(3) The projected beach mitigates flood actions and reduces the maximum mean sediment concentration along the target shore by 20%.(4) The storm winds restrict the flood and decrease the maximum mean sediment concentration by 21%. With the combined actions of storm winds and waves, the maximum value further declines by 38%.(5) A quadratic polynomial relationship between the deposition depths and the maximum sediment inputs with flood is established for estimations on the potential morphological changes after the flood process in extreme events. For the uncertainty of estuarine floods,continuous monitoring on local hydrodynamic variations and sediment characteristics at Tanghe Estuary is necessary.

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