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Scientific Advances and Weather Services of the China Meteorological Administration’s National Forecasting Systems during the Beijing 2022 Winter Olympics

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Advances in Atmospheric Sciences 2024年第5期41卷 767-776页

作者： Guo DENG Xueshun SHEN Jun DU Jiandong GONG Hua TONG liantang DENG Zhifang XU Jing CHEN Jian SUN Yong WANG Jiangkai HU Jianjie WANG Mingxuan CHEN Huiling YUAN Yutao ZHANG hongqi li Yuanzhe WANG li GAO li SHENG Da li li li Hao WANG Ying ZHAO Yinglin li Zhili liU Wenhua GUO China Meteorological Administration Earth System Modeling and Prediction Centre Beijing 100081China State Key Laboratory of Severe Weather China Meteorological AdministrationBeijing 100081China Key Laboratory of Earth System Modeling and Prediction China Meteorological AdministrationBeijing 100081China National Meteorological Center China Meteorological AdministrationBeijing 100081China Environmental Modeling Center/NCEP/NWS/NOAA College ParkMD 20740USA Nanjing University of Information Science and Technology Nanjing 210044China Institute of Urban Meteorology China Meteorological AdministrationBeijing 100089China School of Atmospheric Sciences and Key Laboratory of Mesoscale Severe Weather/Ministry of Education Nanjing UniversityNanjing 210023China Tsinghua University Beijing 100084China

Since the Beijing 2022 Winter Olympics was the first Winter Olympics in history held in continental winter monsoon climate conditions across complex terrain areas,there is a deficiency of relevant research,operational techniques,and *** made providing meteorological services for this event particularly *** China Meteorological Administration(CMA)Earth System Modeling and Prediction Centre,achieved breakthroughs in research on short-and medium-term deterministic and ensemble numerical *** key technologies crucial for precise winter weather services during the Winter Olympics were developed.A comprehensive framework,known as the Operational System for High-Precision Weather Forecasting for the Winter Olympics,was *** of these advancements represent the highest level of capabilities currently available in *** meteorological service provided to the Beijing 2022 Games also exceeded previous Winter Olympic Games in both variety and *** included achievements such as the“100-meter level,minute level”downscaled spatiotemporal resolution and forecasts spanning 1 to 15 *** 30 new technologies and over 60 kinds of products that align with the requirements of the Winter Olympics Organizing Committee were developed,and many of these techniques have since been integrated into the CMA’s operational national forecasting *** accomplishments were facilitated by a dedicated weather forecasting and research initiative,in conjunction with the preexisting real-time operational forecasting systems of the *** program represents one of the five subprograms of the WMO’s high-impact weather forecasting demonstration project(SMART2022),and continues to play an important role in their Regional Association(RA)II Research Development Project(Hangzhou RDP).Therefore,the research accomplishments and meteorological service experiences from this program will be carried forward into forthcoming highimpact weather

关键词： Beijing Winter Olympic Games CMA national forecasting system data assimilation ensemble forecast bias correction and downscaling machine learning-based fusion methods

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基于SAC的炼厂原油储运调度方法

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化工进展 2024年第3期43卷 1167-1177页

作者：马楠李洪奇刘华林杨磊中国石油大学(北京)信息科学与工程学院北京102249 中国石油天然气股份有限公司规划总院北京100083 中国石油天然气股份有限公司油气业务链优化重点实验室北京100083

目前对于炼厂原油储运调度决策的研究大多采用基于数学规划的静态调度方案,求解时间较长并且无法针对环境的变化进行实时高效的储运调度优化。为此,本文结合深度强化学习算法建立了考虑炼厂生产约束的原油资源储运动态实时调度决策算法... 详细信息

目前对于炼厂原油储运调度决策的研究大多采用基于数学规划的静态调度方案,求解时间较长并且无法针对环境的变化进行实时高效的储运调度优化。为此,本文结合深度强化学习算法建立了考虑炼厂生产约束的原油资源储运动态实时调度决策算法。该算法首先将炼厂原油资源调度问题转换为马尔可夫决策过程,其次提出了一种基于软演员-评论家(soft actor-critic,SAC)的深度强化学习算法来同时确定调度过程中的传输目标等离散决策以及传输速度等连续决策。结果表明,算法学习到的策略可行性较好,与基线算法相比,油轮在港时间、调度方案事件数量、加工计划执行率等重要指标方面均得到了较好的效果,在求解时间方面大幅提升至毫秒级,并有效控制随机事件对整体决策的影响范围。该算法可为沿海炼厂原油储运调度快速决策提供新的思路。

关键词：炼厂原油储运资源调度深度强化学习软演员-评论家

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腹部手术生长抑素类药物规范应用的研究进展

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中华消化外科杂志 2024年第5期23卷 676-679页

作者：张太平陈超武李非张群李洪奇中国医学科学院北京协和医学院北京协和医院基本外科北京100730 湖南省人民医院胃肠外科长沙410005 首都医科大学宣武医院普通外科、首都医科大学急性胰腺炎临床诊疗与研究中心北京100053 北京医院医疗保险管理处北京100730 北京大成律师事务所北京100020

腹部手术作为临床常见的手术类型,术后治疗和康复一直是外科医师高度关注的重点。生长抑素类药物常用于腹部手术后出血、门静脉高压症出血、急性胰腺炎等并发症的预防性治疗。临床实践中,生长抑素类药物的规范应用尚存在许多问题和挑战... 详细信息

腹部手术作为临床常见的手术类型,术后治疗和康复一直是外科医师高度关注的重点。生长抑素类药物常用于腹部手术后出血、门静脉高压症出血、急性胰腺炎等并发症的预防性治疗。临床实践中,生长抑素类药物的规范应用尚存在许多问题和挑战。本文汇集国内消化外科领域著名专家及其团队、医保专家及律师,结合各中心经验,从不同角度探讨腹部手术后治疗和康复的重要意义以及生长抑素类药物的应用策略。张太平教授精简凝练地讲解消化道瘘的发生率及其危害,指出“如何能够短时间内把瘘愈合”是主要康复目标且治疗方式主要为综合治疗。陈超武教授全面介绍临床实践中几个典型病例的诊断与治疗过程,分享其团队丰富临床经验,并提出反思性问题。李非教授从实际病例入手,重点讲解十二指肠瘘,包括经内镜逆行术后并发症引起的瘘,特别强调Stanford分型,以及不同分型的治疗方法。张群女士解读国家医保政策,强调医保基金监管的重要性,分享医疗机构自主管理的相关问题。李洪奇律师从政策导向、实践案例等方面,就合理用药全面提出建议。

关键词：腹部手术生长抑素规范应用消化外科研究进展

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Generalized Fresnel operators corresponding to optical Fresnel diffraction and the squeezed states

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Science China(Physics,Mechanics & Astronomy) 2012年第8期55卷 1345-1350页

作者： li hongqi REN TingQi Department of Physics Qufu Normal University Qufu 273165 China Department of Physics Heze University Heze 274015 China

Corresponding to optical Fresnel diffraction, we show that the exponential quadratic operator exp is actually a generalized single-mode Fresnel operator （GFO） in compact form, where [Q,P]=ih. We also demonstrate that exp{iα[（Q1＋Q2）2＋（p1-P2）2]＋iβ[（Q1-Q2）2＋（p1＋p2）2]＋iy（Q1P2＋Q2P1）} is a two-mode GFO. Their disentangling formula and normal ordering form are derived with the use of technique of integration within an ordered product （IWOP） of operators and the coherent state representation. The squeezed states generated by these two GFOs are obtained.

关键词： Fresnel diffraction single-mode Fresnel operator two-mode Fresnel operator IWOP technique

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Quantitative evaluation methods for waterflooded layers of conglomerate reservoir based on well logging data

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Petroleum Science 2010年第4期7卷 485-493页

作者： Tan Fengqi li hongqi Xu Changfu li Qingyuan Peng Shouchang College of Geophysics and Information China University of Petroleum Beijing 102249 China State Key Laboratory of Petroleum Resource and Prospecting China University of Petroleum Beijing 102249 China Research Institute of Petroleum Exploration and Development Xinjiang Oilfield Company PetroChina Karamay Xinjiang 834000 China

The rapid changing near source, multi-stream depositional environment of conglomerate reservoirs leads to severe heterogeneity, complex lithology and physical properties, and large changes of oil layer resistivity. Quantitative evaluation of water-flooded layers has become an important but difficult focus for secondary development of oilfields. In this paper, based on the analysis of current problems in quantitative evaluation of water-flooded layers, the Kexia Group conglomerate reservoir of the Sixth District in the Karamay Oilfield was studied. Eight types of conglomerate reservoir lithology were identified effectively by a data mining method combined with the data from sealed coring wells, and then a multi-parameter model for quantitative evaluation of the water-flooded layers of the main oil-bearing lithology was developed. Water production rate, oil saturation and oil productivity index were selected as the characteristic parameters for quantitative evaluation of water-flooded layers of conglomerate reservoirs. Finally, quantitative evaluation criteria and identification rules for water-flooded layers of main oil-bearing lithology formed by integration of the three characteristic parameters of water-flooded layer and undisturbed formation resistivity. This method has been used in evaluation of the water-flooded layers of a conglomerate reservoir in the Karamay Oilfield and achieved good results, improving the interpretation accuracy and compliance rate. It will provide technical support for avoiding perforation of high water-bearing layers and for adjustment of developmental programs.

关键词： Water-flooded layer quantitative evaluation conglomerate reservoir lithology identification,decision tree characteristic parameters

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The construction of the generalized continuously variable two-mode entangled state and its application

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Science China(Physics,Mechanics & Astronomy) 2009年第12期52卷 1932-1937页

作者： li hongqi XU ShiMin XU XingLei WANG JiSuo Department of Physics Heze UniversityHeze 274015China Department of Physics Liaocheng UniversityLiaocheng 252059China

The generalized continuous variable two-mode entangled state |?> is proposed by using the technique of integration within an ordered product (IWOP) of operators. The characteristics of this new entangled representation and its application in quantum teleportation are analyzed in detail. These results indicate that such real parameters |?> indeed make up a new entangled representation owing to its completeness and orthogonal relation. By employing the |?> as quantum transmission channel, the teleportation of any single-mode quantum state 3 |ψ>3 can be realized by a unitary transformation.

关键词： IWOP technique generalized continuous variable entangled state Schmidt decompositions quantum teleportation

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Generalized two-mode coherent-entangled state with real parameters

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Science China(Physics,Mechanics & Astronomy) 2009年第7期52卷 1027-1033页

作者： XU ShiMin XU XingLei li hongqi WANG JiSuo Department of Physics Heze UniversityHeze 274015China Department of Physics Liaocheng UniversityLiaocheng 252059China

The coherent-entangled state |α, x; λ> with real parameters λ is proposed in the two-mode Fock space, which exhibits the properties of both the coherent and entangled states. The completeness relation of |α, x; λ> is proved by virtue of the technique of integral within an ordered product of operators. The corresponding squeezing operator is derived, with its own squeezing properties. Furthermore, generalized P-representation in the coherent-entangled state is constructed. Finally, it is revealed that superposition of the coherent-entangled states may produce the EPR entangled state.

关键词： bipartite coherent-entangled state IWOP technique classical transformation

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Representing Model Uncertainty by Multi-Stochastic Physics Approaches in the GRAPES Ensemble

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Advances in Atmospheric Sciences 2020年第4期37卷 328-346页

作者： Zhizhen XU Jing CHEN Zheng JIN hongqi li Fajing CHEN Department of Atmospheric and Oceanic Sciences and Institute of Atmospheric Sciences Fudan UniversityShanghai 200438China Chinese Academy of Meteorological Sciences China Meteorological AdministrationBeijing 100081China Numerical Weather Prediction Center China Meteorological AdministrationBeijing 100081China Key Laboratory of Land Surface Pattern and Simulation Institute of Geographic Sciences and Natural Resources ResearchChinese Academy of SciencesBeijing 100101China

To represent model uncertainties more comprehensively,a stochastically perturbed parameterization(SPP)scheme consisting of temporally and spatially varying perturbations of 18 parameters in the microphysics,convection,boundary layer,and surface layer parameterization schemes,as well as the stochastically perturbed parameterization tendencies(SPPT)scheme,and the stochastic kinetic energy backscatter(SKEB)scheme,is applied in the Global and Regional Assimilation and Prediction Enhanced System-Regional Ensemble Prediction System(GRAPES-REPS)to evaluate and compare the general performance of various combinations of multiple stochastic physics *** experiments are performed for a summer month(1-30 June 2015)over China and multiple verification metrics are *** results show that:(1)All stochastic experiments outperform the control(CTL)experiment,and all combinations of stochastic parameterization schemes perform better than the single SPP scheme,indicating that stochastic methods can effectively improve the forecast skill,and combinations of multiple stochastic parameterization schemes can better represent model uncertainties;(2)The combination of all three stochastic physics schemes(SPP,SPPT,and SKEB)outperforms any other combination of two schemes in precipitation forecasting and surface and upper-air verification to better represent the model uncertainties and improve the forecast skill;(3)Combining SKEB with SPP and/or SPPT results in a notable increase in the spread and reduction in outliers for the upper-air wind *** directly perturbs the wind field and therefore its addition will greatly impact the upper-air wind-speed fields,and it contributes most to the improvement in spread and outliers for wind;(4)The introduction of SPP has a positive added value,and does not lead to large changes in the evolution of the kinetic energy(KE)spectrum at any wavelength;(5)The introduction of SPPT and SKEB would cause a 5%-10%and 30%-80%change in the KE of mesosc

关键词： ensemble prediction model uncertainty stochastically perturbed parameterization multi-stochastic physics approaches

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A fluorescent probe based on a spiropyran for sensitive detection of Ce^3+ ion

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Journal of Rare Earths 2020年第4期38卷 445-450页

作者： Xin Luo Dongling Chen Zhenxiang Xu Yanxi Song hongqi li Chunying Xian Key Laboratory of Science&Technology of Eco-Textile Ministry of EducationCollege of ChemistryChemical Engineering and BiotechnologyDonghua UniversityShanghai 201620China Weifang Institute of Test and Measurement Weifang 261000China Penglai Xinguang Pigment Chemical Co. Ltd.Penglai 265600China School of Environmental Science and Engineering Donghua UniversityShanghai 201620China

A spiropyran-based probe was *** serves as a fluorescence turn-on probe for selective detection of Ce^3+in both ethanol and aqueous(water/ethanol,1:9 or 9:1,v/v)***3+can induce photochromism of the probe though the probe exhibits negligible photochromic property by *** probe is sensitive to Ce3+and the detection limit reaches 1.7μmol/*** exhibits a high selectivity for Ce^3+ion over other common metal cations including li^+,Na^+,Ag^+,Sr^2+,Ni^2+,Co^2+,Hg^2+,Zn^2+,Cr^3+,Al^3+,Fe^3+and Bi^3+and lanthanide ions Nd^3+,Yb^3+and La^3+.The probe may be used for quantitative determination of the concentration of Ce3+ion in a range of 1-10μmol/L and for application to environmental water *** mechanism of the probe towards Ce3+ion is proposed.

关键词： Spiropyran Probe Cerium(Ⅲ)ion Fluorescent Rare earths

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Inversion of Array Induction Logs and Its Application

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Petroleum Science 2007年第3期4卷 31-35页

作者： Gao Jie Zhao Aibin Peng Fei li hongqi School of Resources and Information China University of Petroleum Beijing 102249 China Changqing Oilfield Company PetroChina Xi＇an Shaanxi 710021 China

With the help of the modified geometrical factor theory, the Marquardt method was used to calculate the true electrical parameters of the formation from array induction logs. The inversion results derived from the assumed model and some practical cases show that the rebuilt formation profile determined by 2-ft resolution array induction logs is reasonable when the formation thickness is greater than 1 m, which thus indicates that the inversion method is reliable and can provide quantitative information for the discrimination of oil/gas or water zone.

关键词： Array induction log modified geometrical factor Marquardt method inversion

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