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The result shows that: The variation rhythm of the sensitivity index changed unanimously for Jensen,Blank and Stewart water production functions of spring wheat in Liangzhou city,the volume is small in the former stage,then become large at the middle stage,and less at the last stage. Jensen and Stewart water production functions are better of spring wheat in Gulang County in 1987-1989. The Variation rhythm of water deficiency sensitive index is unanimous: the volume are small at first,then large at middle,and diminish at last. The Variation rhythm of water deficiency sensitive index is unanimous in Jensen,Blank and Minhas of flax in Liangzhou county in 1987-1989. The water deficiency sensitive index in Gulang district in 1987-1989 models bad,are too many minus. 3 Establishing the non-linear model to definitive the irrigation quota and dimension of single crop,according the three prototype Precipitation,allocating the limited water optimally according to full water supply,95 percent,75 percent and 50 percent. Economy benefit is the biggest aim function,so getting three groups for irrigation quota,irrigation dimension and benefit,the biggest benefit is the most optimal result.
结果表明:1985-1986 年凉州春小麦Jensen 模型、Bl(来源:10a1ABC论文网www.abclunwen.com)ank 模型和Stewart 模型的敏感指数变化规律接近一致,在前期较小,中期增大,最后再减小。1987-1989 年古浪春小麦水分生产函数以Jensen 模型和Stewart 模型拟合较好,其敏感指数变化规律比较一致,敏感指标值前期较小,中期增大,后期又减小。1983-1985 年凉州亚麻水分生产函数以Jensen 模型、Blank 模型和Minhas 模型敏感指标值变化规律比较一致:先减小,后增大,最后再减小。1987-1989 古浪亚麻敏感指数出现负值较多,模型拟合较差。3 建立单作物种植条件下灌溉定额与灌溉面积的确定的非线性规划模型,将有限的水量按照充分供水,95%、75%和50%供水来分配水资源,以经济效益最大为目标函数,得出三组灌区灌溉面积和效益结果,其中以效益最大为最优解。
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The reasons of the capacity attenuation have primarily to accompany with the Li~+ ion embedding material on discharge process the effect of Jahn-Teller of the occurrence, the deliquescence of the cathode manganese in the material and the decomposition of the electrolyte.
在锂离子电池众多的正极材料中,尖晶石型LiMn_2O_4化合物,由于其原材料资源丰富,价格低,环境污染小,合成工艺简单,成为最有希望取代LiCoO_2的材料,但LiMn_2O_4存在容量衰减大,循环寿命短等问题,阻碍了其商品化应用;容量衰减的原因主要有在放电过程中伴随着Li~+离子嵌入发生的Jahn-Teller效应,正极材(来源:AacBCbd论4b文网www.abclunwen.com)料中的锰的溶解和电解液的分解。
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Law knowing that our country labour system to concurrent post by the fact that relation several aspect such as producing cause , developing the necessity that course , the scholar work establishing the system holding two or more posts concurrently on relation take issue with and legal system to concurrent post working carries out investigation and discussion , the depth on concurrent post gauge system hiatus and how come to solve legislation process middle possibility come across problem.
通过对兼职劳动关系的产生原因、发展历程、学者对兼职劳动关系的争论以及法律制度上确立兼职制度的必要性等几个方面进行探讨,深刻认识我国对兼(来源:23AB58C论文网www.abclunwen.com)职劳动制度法律规制的缺失以及如何来解决立法过程中可能遇到的问题。
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This research\'s content includes: to design the architecture of the system, to screen the reasonable scientific evaluating indicator, to determinate system target weight as well as the normal value, to determinate target allocation method, to build the model.
本研究的研究内容包括:设计我国公立医院的体系结构、筛选出较科学、合理的评(来源:ABCa093a0论文网www.abclunwen.com)价指标、确定评价指标的权重以及标准值、确定指标计分方法、建立模型。
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Furthermore, a multi-container port bi-level programming model under the uncertainty conditions is established, and stochastic bi-level programming model is transformed into deterministic bi-level programming model according to random programming theory.
针对本文建立的双层规划模型,采用基于灵敏度分析的启发式算法S(来源:Ad1BC65论76文网www.abclunwen.com)AB求解。同时进一步建立了不确定条件下的双层规划模型,并且根据随机规划理论转化为确定型双层规划模型。
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On the other hand,the structure of differential operator and that of difference operator are very similar,therefore,it is a urgent task to find in the current scientific research a new theoretical framework,which can unify the continuous systems and the discrete ones for the sake of study in order to not only avoid unnecessary repetition in work but also be able to make better insight into the nature of the differences among different systems.
因此,能否找到一个新的理论框架,将连续系统与离散系统统一(来源:9dABC论9e9e文网www.abclunwen.com)起来进行研究,从而避免不必要的重复工作,且能更好的洞察不同系统之间的本质差异,已是当前科学研究的当务之急。
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Accordingly, we give the estimate for the life span of the solution to fast diffusion equation.
从而得到了与慢扩散方程和半线性方程的结论(来源:1919ABadC论文网www.abclunwen.com)统一的解的生命跨度的估计。
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For example, Keyfitz made the classification of the bifurcations in one state variable, without symmetry up to codimension 7; Golubitsky and Schaeffer obtained the classification of the bifurcation problems in one state variable with Z_2 symmetry, in one parameter up to codimension 3; Golubitsky and Roberts studied the classification of degenerate Hopf bifurcation in two state variables with dihedron D_4 symmetry, in one parameter up to topological codimension 2; Melbourne obtained the classification of bifurcations in three state variables with octahedral symmetry, in one parameter, up to
需要指出的是以上研究均没有考虑分歧参数的对称性,Futer,Sitta和Stewart的工作虽然考虑了分歧参数的对称性,但仅限于分歧参数与状态变量具有相同的对称性,他们得到了状态变量与分歧参数均关于二面体群D_4对称,拓扑余维数不大于1的分歧问题的分类。高守平和李养成则讨论状态变量和分歧参数均具有对称性且对称性可以不同的分歧问题,并给出了状态(来源:A770707BC论文网www.abclunwen.com)变量关于二面体群D_4对称,分歧参数关于S~1对称,拓扑余维不超过1的分歧问题的分类。本文第一章讨论两个状态变量关于二面体群D_3对称,两个分歧参数关于O(2)对称的分歧问题,给出了该类分歧问题在非退化条件q(0)≠0下所有情形的分类与相应的识别条来源:AdadaBC论文网www.abclunwen.com
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Based on the research work of basic theories including phase space reconstruction,embedding theorem,correlation dimension,local dynamics,Lyapunov exponents,surrogate data etc,based on the research work of general methods such as principal component analysis,correlation dimension GP algorithm,false neighbors method,nonlinear time series prediction,local prediction, adaptive prediction,neural network model,support vector machines regression model, prediction power,nonlinear detection,coarse-graining methodology,conditional entropy and so on,the framework of nonlinear time series analysis are constructed.
在对包括相空间重构、嵌入定理、关联维数、局部动力学、Lyapunov指数、替代数据(来源:A97BC论文网www.abclunwen.com)、等基本理论与其物理意义的研究和讨论基础上;在对包括主分量分析、关联维数GP算法、伪邻近点法、非线性时间序列预测、局域预测、自适应预测、神经网络模型、支持向量回归模型、预测效果、非线性检测、粗粒化方法、条件熵等非线性时间序列一般分析方法的原理和算法研究基础上;构建了新的非线性时间序列分析的理论体系,归纳总结了非线性时间序列分析的基本问题和主要研究方面。2。
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Thus Diophantus\' work is at the opposite end of the spectrum from the purely synthetic work of Euclid.3. The methods of Diophantus are discussed in the paper.
希腊文本部分主要依(来源:A9393BC论文网www.abclunwen.com)据希思的英文版,阿拉伯文本主要依据塞夏诺的英文版。
- 推荐网络例句
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Putt your way through 36 fun-filled holes of minigolf on 3D designed courses with elevated greens, bunkers, bridges and water hazards, among other crazy obstacles.
您的推杆方式,通过36个有趣的填孔迷你的三维设计的课程,以提升绿党,掩体,桥梁和水的危害,除其他疯狂的障碍。
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Some participles can be used either as attributes or as predicatives.
有些分词既可当定语用,也可当表语用。
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Over time, the jaw crusher has been a significant improvement, it is a highly efficient, energy-efficient equipment often broken.
随着时间的推移,颚式破碎机得到很大的改进,已经是一种高效,节能的常用破碎设备。