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Science China Mathematics 2002年第5期45卷 578-593页

作者：袁益让 Institute of Mathematics Shandong University Jinan China

For combinatorial system of multilayer dynamics of fluids in porous media, the second order and first order upwind finite difference fractional steps schemes applicable to parallel arithmetic are put forward and two-dimensional and three-dimensional schemes are used to form a complete set. Some techniques, such as implicit-explicit difference scheme, calculus of variations, multiplicative commutation rule of difference operators, decomposition of high order difference operators and prior estimates, are adopted. Optimal order estimates in L 2 norm are derived to determine the error in the second order approximate solution. This method has already been applied to the numerical simulation of migration-accumulation of oil resources. Keywords: combinatorial system, multilayer dynamics of fluids in porous media, two-class upwind finite difference fractional steps method, convergence, numerical simulation of energy sources.

关键词： combinatorial system, multilayer dynamics of fluids in porous media, twoclass upwind finite difference fractional steps method, convergence, numerical simulation of energy sources.

Numerical Solution of the Rotating Shallow Water Flows with Topography Using the Fractional steps Method

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Applied Mathematics 2010年第2期1卷 104-117页

作者： Hossam S. Hassan Khaled T. Ramadan Sarwat N. Hanna 不详

The two-dimensional nonlinear shallow water equations in the presence of Coriolis force and bottom topography are solved numerically using the fractional steps method. The fractional steps method consists of splitting the multi-dimensional matrix inversion problem into an equivalent one dimensional problem which is successively integrated in every direction along the characteristics using the Riemann invariant associated with the cubic spline interpolation. The height and the velocity field of the shallow water equations over irregular bottom are discretized on a fixed Eulerian grid and time-stepped using the fractional steps method. Effects of the Coriolis force and the bottom topography for particular initial flows on the velocity components and the free surface elevation have been studied and the results are plotted.

关键词： Shallow Water Equations Fractional steps Method Riemann Invariants Bottom Topography Cubic Spline Interpolation

A review on the treatise Visualization of sneeze ejecta:steps of fluid fragmentation leading to respiratory droplets

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留学 2020年第19期 88-89页

作者：宋若水不详

COVID-19 spreads through patients’exhalation droplets,hence a comprehensive understanding of muco-saliva fragmentation provides crucial *** paper scrutinizes a study of the breakup of mimic of contagious viscoelastic exhalation fluid,conducted by MIT researchers:“Visualization of sneeze ejecta:steps of fluid fragmentation leading to respiratory droplets”,in which the authors profoundly contributed to the understanding of hazardous sneeze ejecta caused by *** this article,some of their nicely incorporated experimental methods and break through will be described and analyzed with the integration of fluid dynamics.

关键词： fluid steps fragmentation

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基于steps的音乐厅人员疏散模拟研究

消防科学与技术 2016年第8期35卷 1080-1083页

作者：李大燕朱国庆中国矿业大学安全工程学院江苏徐州221116 中国矿业大学煤矿瓦斯与火灾防治教育部重点实验室江苏徐州221116 中国矿业大学消防工程研究所江苏徐州221116

介绍元胞自动机理论和steps软件。研究音乐厅人员疏散的设计,运用steps软件,分析火灾导致某安全出口失效的情况下音乐厅人员疏散过程,分析其他安全出口的利用率。模拟结果显示,安全出口利用不均衡,人员在疏散楼梯口以及个别直通室外的... 详细信息

介绍元胞自动机理论和steps软件。研究音乐厅人员疏散的设计,运用steps软件,分析火灾导致某安全出口失效的情况下音乐厅人员疏散过程,分析其他安全出口的利用率。模拟结果显示,安全出口利用不均衡,人员在疏散楼梯口以及个别直通室外的安全出口发生拥堵。建议增大安全出口宽度,合理分流,统筹疏散;制定完善的管理制度和维护措施。将steps模拟结果与Pathfinder模拟结果进行对比,模拟结果基本一致。

关键词：元胞自动机 steps 音乐厅人员疏散疏散模拟建筑防火

Validation of traditional Chinese medicine terminology:Crucial steps for inheritance,development,and in-depth internationalization of traditional Chinese medicine

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Science of Traditional Chinese Medicine 2024年第3期2卷 181-182页

作者： Yongyan Wang Luqi Huang China Academy of Chinese Medical Sciences BeijingChina

Traditional Chinese medicine(TCM)is a gem of the Chinese nation,a key to unlocking the treasure trove of Chinese civilization,and a precious gift to the people of China and the *** thousands of years of medical practice,it encapsulates profound philosophical thoughts and extensive practical *** society evolves,TCM faces challenges caused by confusion and inconsistencies in language expression,nomenclature,and terminology,which hinder efficient academic communication and international ***,validating and approving TCM terminology are crucial for the inheritance,development,and in-depth internationalization of TCM.

关键词： terminology steps hinder

基于steps的山区高含硫气井周边居民疏散模拟研究

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南开大学学报（自然科学版） 2011年第6期44卷 81-87页

作者：王丽刘茂孟博南开大学城市公共安全研究中心天津300071 沈阳农业大学土地与环境学院辽宁沈阳110866

我国高含硫气井都位于一些远郊区或偏远山区,在生产运行中已多次因出现井喷、井口溢气等险情而疏散周边居民.以山区某高含硫气井周围1 km内的居民疏散为研究对象,针对当地山峦起伏、山路坡陡等复杂地形的特点,使用steps软件进行模拟.根... 详细信息

我国高含硫气井都位于一些远郊区或偏远山区,在生产运行中已多次因出现井喷、井口溢气等险情而疏散周边居民.以山区某高含硫气井周围1 km内的居民疏散为研究对象,针对当地山峦起伏、山路坡陡等复杂地形的特点,使用steps软件进行模拟.根据NASA 2009年的全球DEM数据、航拍图和实地调研结果,提供了在软件中直接绘制山区三维地形和道路网络模型的方法.在人员属性的设置中,考虑了地形坡度对不同性别和年龄的人员移动速度的影响.最后通过steps模拟,研究了气井周围三条主要道路上的疏散时间、疏散效率以及不同类型人员的疏散.

关键词：山区高含硫气井复杂地形 steps 三维疏散模拟

Case study of the steps a high school student must take to become an entrepreneur

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留学 2020年第17期 76-77页

作者：庄一帆法拉古特天津校区

Most of the time, people have a very shallow understanding of entrepreneurship. Actually, the first class of becoming an entrepreneur is to ‘think like an entrepreneur'. To become an entrepreneur is not to create som... 详细信息

关键词： steps something becoming

LM-3A Rocket Family steps into 3.0 Era

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Aerospace China 2015年第2期16卷 44-46页

作者： CUI Enhui China Space News

The LM-3C/Yuanzheng 1 launch vehicle conducted its maiden flight on March 30 *** new member of the LM-3A rocket family is a four-stage rocket with 3 lower stages based on LM-3C rocket but an upper stage,whose technica... 详细信息

关键词： rocket Rocket launch Family steps honor preliminary JIANG orbit aimed

Study on the Four from Deming's Fourteen steps to TQM in Classroom Teaching

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新东方英语（中英文版） 2019年第10期 99-99,157页

作者：孔燕 Language and Culture College Xinjiang Medical University

The writer aims to study on the four important ones from Deming's fourteen steps to Total Quality Management ( TQM) in classroom teaching,to analyze the steps from the aspect of classroom teaching and discuss the feas... 详细信息

关键词： Total Quality Management ( TQM ) Deming's fourteen steps efficiency classroom teaching teacher curriculum student

Speaking Easy Seven steps to panic-free public speaking

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语言教育 1992年第4期 34-37页

作者： Charles Osgood 卫纯娟

SPEAKINC IN PUBLIC is most people’s least favor-ite thing. The reason is that we’re all afraid of makingfools of ourselves. The more important the speech, themore frightened we become. But stop biting your fingernai... 详细信息

关键词： speaking talking panic steps Seven favor likely plain write remember