结果分析中...
检索条件:"关键词=ordinary "
条 记 录,以下是1-10
|
视图:
排序:
期刊On the Existence of Periodic Solutions for a Nonlinear System of ordinary Differential Equations
《数学学报:英文版》2000年第3期505-514,共10页Zhaoli Liu Department of Mathematics,Shandong University,Ji’nan,250100,P.R.China 
Research supported by the NNSF of China and the RFDP of China.
This paper is concerned with the existence of periodic solutions for a nonlinear system ofordinary differential equations.We obtain a Nagumo-type a priori bound for the periodic solutionsand then by using this a prior...显示全部
关键词:NONLINEAR system of ordinary DIFFERENTIAL EQUATION PERIODIC solution a priori estimation Nagumo CONDITION 
期刊Partial Dynamic Dimension Reduction for Conditional Mean in Regression
《系统科学与复杂性学报:英文版》2020年第5期1585-1601,共17页GAN Shengjin YU Zhou 
supported by the Natural Science Foundation of Fujian Province of China under Grant No.2018J01662;High-Level Cultivation Project of Fuqing Branch of Fujian Normal University under Grant No.KY2018S02。
In many regression analysis,the authors are interested in regression mean of response variate given predictors,not its the conditional distribution.This paper is concerned with dimension reduction of predictors in sen...显示全部
关键词:Dynamic ordinary least square estimate dynamic principal Hessian directions kernel estimate partial dimension reduction 
期刊NEW PROGRESS IN THEORY OF SURFACES DEFINED BY ordinary DIFFERENTIAL EQUATIONS~*
《科学通报:英文版》1989年第10期800-803,共4页秦元勋 
Project supported by the National Natural Science Foundation of China.
Here singular points of the system (E_n~*) includes both finite and infinite singular points defined by H. Poincare, but extended to complex domain.
关键词:nonlinear ordinary differential equations STRONG rooted THEOREM general INTEGRAL representation THEOREM HILBERT number N(n). 
期刊China Through the Lens of an Oscar-Winning Director
《今日中国:英文版》2021年第9期64-67,共4页ZHOU LIN 
THE documentary A Long Cherished Dream,directed by British two-time Oscar-winning director Malcolm Clarke,premiered globally in mid July.In the four-episode documentary,Clarke shines a spotlight on China’s road to Xi...显示全部
关键词:DIRECTOR globally ordinary 
期刊THE MASSIVE NEUTRINO AND THE CLUSTERING PHENOMENA IN THE UNIVERSE
《科学通报:英文版》1983年第1期63-68,共6页陆埮 朱沛臣 
Neutrinos are rather abundant in the universe, nearly as abundant as photons. The non-vanishing of neutrino’s rest mass should certainly induce many interesting astrophysical effects. in this paper, we shall discuss ...显示全部
关键词:abundant UNIVERSE GALAXIES VANISHING CLUSTERING dominated ordinary latter umber STEEP 
期刊A NEW NUMERICAL ANALOG OF TWO-PHASE IMMISCIBLE FLOW AND ITS THEORETICAL ANALYSIS
《科学通报:英文版》1986年第14期978-983,共6页袁益让 王文洽 羊丹平 
To infuse water into oil reservoir by a high-pressure pump to let oil residuum issue out of oil wells is a problem of two-phase immiscible flow displacement. J. Douglas and D. W. Peaceman proposed a finite-difference ...显示全部
关键词:reservoir seldom SATURATION INFUSION partition DEGENERATIVE REGULARITY gravity ordinary 竺里 
期刊Prediction and Protection of Cultivated Land in China
《Asian Agricultural Research》2021年第2期3-7,共5页Renyi YANG Fenglian LIU Zisheng YANG 
[Objectives]To protect cultivated land and ensure national food security and to forecast the cultivated land area of China and the provinces(cities)in 2030,2035 and 2050.[Methods]Based on the cultivated land area data...显示全部
关键词:Cultivated land SCALE PREDICTION Cultivated land protection China ordinary least square(OLS)regression model 
期刊High Bulk Modulus of Nanocrystal γ-Fe2O3 with Chemical Dodecyl Benzene Sulfonic Decoration Under High Pressure
《中国物理快报:英文版》2000年第2期126-128,共3页赵菁 郭林 刘景 杨洋 车荣钲 周镭 
Structural transformation in γ-Fe2O3 nanocrystals (about 1Onm) with dodecyl benzene sulfonic (DBS) coated is studied by using high-pressure energy dispersive x-ray diffraction of synchrotron radiation and high-resolu...显示全部
关键词:CRYSTAL ordinary surface 
期刊一词一分(25)
《新东方英语:中学版》2016年第2期44-44,共1页
考试中,往往一个小单词就能成为得分的"绊脚石"。本栏目就来帮助你扫清这些"绊脚石",一网打尽高考中常考的一词多义、熟词生义,让你学会一个单词就等于实实在在拿到一分!due【连线高考】No matter how ordinary a j...显示全部
关键词:ordinary 一词多义 disadvantages 比喻意义 SHADE 人造光 apart 急性应激 LIGHTING TODAY 
期刊Extraordinary Transmission through Fractal-Featured Metallic and Superconducting Films at Terahertz Frequency
《中国物理快报:英文版》2012年第11期56-59,共4页梁兰菊 金飚兵 张秋奕 吴敬波 鲍永军 郏涛 贾小氢 曹春海 康琳 许伟伟 陈健 吴培亨 
Supported by the National Basic Research Program of China(Nos 2011CBA00107,2011CBA00202);the National Natural Science Foundation of China under Grant Nos 61071009,61027008,11104110;the Specialized Research Fund for Doctoral Program of Higher Education(20090091110040);the Priority Academic Program Development of Jiangsu Higher Education Institutions(PAPD)。
We report on fractal-featured square and ring-shaped apertures with a Sierpinski carpet pattern(SCP)on metallic and superconducting NbN films.Multiple extraordinary terahertz(THz)transmission peaks are studied in the ...显示全部
关键词:SHAPED ordinary FRACTAL 
共52页<12345678910
聚类工具

北京电子科技职业学院特色库 版权所有 ©2018