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Assessment of seasonal Rainfall Prediction in Ethiopia: Evaluating a Dynamic Recurrent Neural Network to Downscale ECMWF-sEAs5 Rainfall

第十二届全国生物力学学术会议暨第十四届全国生物流变学学术会议

作者： Qingyu Wang Dalin Tang Gador Canton thomas s.Hatsukami Kristen L Billiar Zheyang Wu Chun Yuan school of Biological science and Medical Engineering Southeast University Mathematical sciences Department Worcester Polytechnic Institute Department of Mechanical Engineering University of Washington Division of Vascular surgery University of Washington Biomedical Engineering Department Worcester Polytechnic Institute Department of Radiology University of Washington

Objective It is well known that the benefits from performing carotid endarterectomy for the patients with stenosis severity between 50%and 70%, remains questionable. With a 2%-4%event rate, most of the surgeries were unnecessary. Investigation of plaque development for these patients may aid in making more plausible decision on clinical intervention. We hypothesize that combining morphological and mechanical risk factors may improve plaque progression prediction. In this paper, plaque burden (PB),cap thickness (CT),lipid percent

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Advances in Atmospheric sciences 2024年第11期41卷 2230-2244页

作者： Abebe KEBEDE Kirsten WARRACH-sAGI thomas sCHWITALLA Volker WULFMEYER Tesfaye ABEBE Markos WARE Hawassa University College of Agriculture P.O.Box 05HawassaEthiopia Institute of Physics and Meteorology University of HohenheimP.O.Box 70599StuttgartGermany Arba Minch University Water Institute of Technology Faculty of Meteorology and HydrologyP.O.Box 21Arba MinchEthiopia

seasonal rainfall plays a vital role in both environmental dynamics and decision-making for rainfed agriculture in Ethiopia, a country often impacted by extreme climate events such as drought and flooding. Predicting the onset of the rainy season and providing localized rainfall forecasts for Ethiopia is challenging due to the changing spatiotemporal patterns and the country's rugged topography. The Climate Hazards Group Infra Red Precipitation with station Data(CHIRPs), ERA5-Land total precipitation and temperature data are used from 1981–2022 to predict spatial rainfall by applying an artificial neural network(ANN). The recurrent neural network(RNN) is a nonlinear autoregressive network with exogenous input(NARX), which includes feed-forward connections and multiple network layers, employing the Levenberg Marquart algorithm. This method is applied to downscale data from the European Centre for Medium-range Weather Forecasts fifth-generation seasonal forecast system(ECMWF-sEAs5) and the Euro-Mediterranean Centre for Climate Change(CMCC) to the specific locations of rainfall stations in Ethiopia for the period 1980–2020. Across the stations, the results of NARX exhibit strong associations and reduced errors. The statistical results indicate that, except for the southwestern Ethiopian highlands, the downscaled monthly precipitation data exhibits high skill scores compared to the station records, demonstrating the effectiveness of the NARX approach for predicting local seasonal rainfall in Ethiopia's complex terrain. In addition to this spatial ANN of the summer season precipitation, temperature, as well as the combination of these two variables, show promising results.

关键词： station prediction downscaling artificial neural networks rainfall

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1983年锡新近发展的评述

中国有色冶金 1984年第12期 41-48页

作者： thomas s.Mackey 欧家障

锡价 1983年是锡供过于求的连续三年中的第三年。正如以前所预测的那样,锡价保持在6.00美元/磅上下,见表1所示的平均锡价。美国总务署1983年总共售出2865公吨锡,平均售价为6.02美元/磅。纽约各交易商的报价平均

关键词：金属锡炼锡重金属冶金消费量会员国成员国

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巴西农药市场

农药译丛 1989年第1期11卷 33-39页

作者： Marion s.thomas 赵祖培 ICI公司农业化学品部

巴西是世界第五大农药市场,1985年销售额达7.95亿美元,占世界农药市场总销售金额(160亿美元)的5%(以实际农用水平计,美国占30%,西欧占24%,日本占13%,其他国家占28%)。除去通货膨胀因素之外,巴西农药市场1986年上升到9.

关键词：农药农药市场

Comprehensive analysis of uncertainty quantification for the^(58)Ni(n,p)^(58)Co reaction cross section

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Chinese Physics C 2024年第9期48卷 170-175页

作者： Mahesh Choudhary Aman sharma Namrata singh Mahima Upadhyay Punit Dubey A.Gandhi Akash Hingu G Mishra sukanya De L.s.Danu Ajay Kumar R.G.thomas saurav sood sajin Prasad s.Mukherjee I.N.Ruskov Yu.N.Kopatch A.Kumar Department of Physics Banaras Hindu UniversityVaranasi 221005India Horia Hulubei National Institute of Physics and Nuclear Engineering-IFIN-HH Bucharest 077125Romania Department of Physics The Maharaja Sayajirao University of BarodaVadodara 390002India Nuclear Physics Division Bhabha Atomic Research CentreMumbai 400085India Health Physics Division Bhabha Atomic Research CentreMumbai 400085India Department of Electrical Power Engineering Brno University of TechnologyBrno 61600Czech Republic Institute for Nuclear Research and Nuclear Energy Bulgarian Academy of SciencesSofia 1784Bulgaria Joint Institute for Nuclear Research(JINR) Dubna 141980Russia

In this study,we measured the^(58)Ni(n,p)^(58)Co reaction cross section with neutron energies of 1.06,1.86,and 2.85 *** cross section was measured using neutron activation techniques andγ-ray spectroscopy,and it was compared with cross section data available in the ***,we calculated the covariance matrix of the measured cross section for the aforementioned nuclear *** uncertainties of the theoretical calculation for^(58)Ni(n,p)^(58)Co reaction cross section were calculated via Monte Carlo *** this study,we used uncertainties in the optical model and level density parameters to calculate uncertainties in the theoretical cross *** theoretical calculations were performed by using *** this study,we aim to analyze the effect of uncertainties of the nuclear model input as well as different experimental variables used to obtain the values of reaction cross section.

关键词： ^(58)Ni(n p)^(58)Co reaction γ-ray spectroscopy uncertainty quantification of cross section covariance analysis

言语和运动负荷试验引起心脏病病人的心血管反应

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国外医学（护理学分册） 1993年第1期12卷 8-9页

作者： thomas s A 邱学良杨晓钰

心脏科的护士有时需协助医生作些运动负荷试验。本文观察两组患者(心绞痛和心脏病)的运动负荷试验和言语试验的结果,并进行对比。作者认为6分钟安静-谈话-安静试验(QTQ 试验),也有一定临床意义。如果患者不能完成三阶段的运动负荷试验(E... 详细信息

心脏科的护士有时需协助医生作些运动负荷试验。本文观察两组患者(心绞痛和心脏病)的运动负荷试验和言语试验的结果,并进行对比。作者认为6分钟安静-谈话-安静试验(QTQ 试验),也有一定临床意义。如果患者不能完成三阶段的运动负荷试验(EsT),做QTQ 试验也有参考价值。

关键词：言语运动心脏病心血管反应

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孤独的农夫

语言教育 1995年第9期 9-10页

作者： R.s.thomas 刘济汉

关键词： listening minute itself farmer 耳中 easing nothing himself notes thorn

The alternative of Cubesat-based advanced infrared and microwave sounders for high impact weather forecasting

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Atmospheric and Oceanic science Letters 2019年第2期12卷 80-90页

作者： LI Zhenglong LI Jun sCHMIT Timothy J. WANG Pei LIM Agnes LI Jinlong NAGLE Fredrick W. BAI Wenguang OTKIN Jason A. ATLAs Robert HOFFMAN Ross N. BOUKABARA sid-Ahmed ZHU Tong BLACKWELL William J. PAGANO thomas s. Cooperative Institute for Meteorological satellite studies University of Wisconsin-Madison Center for satellite Applications and Research National Oceanic and Atmospheric Administration National satellite Meteorological Center China Meteorological Administration Atlantic Oceanographic and Meteorological Laboratory Ocean and Atmospheric Research/National Oceanic and Atmospheric Administration Cooperative Institute for Marine and Atmospheric studies University of Miami Center for satellite Applications and Research National Oceanic and Atmospheric Administration College Park Cooperative Institute for Research in the Atmosphere Colorado State University Lincoln Laboratory Massachusetts Institute of Technology Jet Propulsion Laboratory California Institute of Technology

The advanced infrared(IR) and microwave(MW) sounding systems have been providing atmospheric sounding information critical for nowcasting and improving weather forecasts through data assimilation in numerical weather prediction. In recent years, advanced IR and MW sounder systems are being proposed to be onboard Cubesats that are much more cost efficient than traditional satellite systems. An impact study using a regional Observing system simulation Experiment on a local severe storm(Lss) was carried out to evaluate the alternative of using advanced MW and IR sounders for high-impact weather forecasting in mitigating the potential data gap of the Advanced Technology Microwave sounder(ATMs) and the Cross-track Infrared sounder(CrIs) on the suomi-NPP(sNPP) or Joint Polar satellite system(JPss). It was found that either MicroMAs-2 or the Cubesat Infrared Atmospheric sounder(CIRAs) on a single Cubesat was able to provide a positive impact on the Lss forecast, and more Cubesats with increased data coverage yielded larger positive ***-2 has the potential to mitigate the loss of ATMs, and CIRAs the loss of CrIs, on sNPP or JPss, especially when multiple Cubesats are launched. There are several approximations and limitations to the present study, but these represent efficiencies appropriate to the principal goal of the study — gauging the relative values of these sensors.

关键词： OssE Cubesat sounder high-impact weather

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提高采收率方法的前景和问题

国外油田工程 1997年第10期13卷 1-7页

作者： s.M.FAROUQAli s.thomas 韩伯惠大庆油田研究院

本文系统、综合地概述了提高原油采收率（EOR）的各种方法，并根据矿场的经验评估了它们目前的影响。文章简要地描述了主要的EOR方法及其现状，也介绍了不能成功应用的原因。本文未罗列大量统计数据。也未提出新的筛选标准，而是利用流... 详细信息

本文系统、综合地概述了提高原油采收率（EOR）的各种方法，并根据矿场的经验评估了它们目前的影响。文章简要地描述了主要的EOR方法及其现状，也介绍了不能成功应用的原因。本文未罗列大量统计数据。也未提出新的筛选标准，而是利用流度比和毛管数的概念讨论这些方法。成功地提高采收率的方法，如注蒸汽辅助重力泄油（sAGD），就是标准方法在特殊油藏条件下的改型。有些EOR方法，如化学驱，本身就存在局限性，所以在矿场的应用就不如在实验室内的成功。

关键词：采收率 EOR 原油油气藏

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提高采收率方法的前景和问题

石油石化节能与计量 1997年第10期 1-7页

作者： s．M．FAROUQAli,s．thomas,韩伯惠大庆油田研究院

关键词：提高原油采收率特殊油藏 EOR方法实验室