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 macroscopic models 宏观描述模型(0)
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 Macroscopic Models for Semiconductors and Their Mathematical Theory 半导体宏观数学模型及其数学理论 短句来源 In this paper we introduce the recent developments of the macroscopic models for semiconductors and the relevant mathematical results. 本文介绍半导体宏观数学模型的一些发展近况以及有关模型的数学分析结果 . 短句来源 This paper introduces the basic concept of macroscopic models,and the developments of different kinds of macroscopic models in pipeline networks system,analyzes the characteristics,application conditions and defects about all kinds of macroscopic models. 介绍了宏观模型基本概念、在管网中的应用背景,分析了不同宏观模型的特点与适用条件以及各种模型自身存在的缺陷。 短句来源 Macroscopic Models for Nonlinear Seiemic Response Analysis of Reinforced Concrete Walls and Its Application 钢筋混凝土剪力墙单元非线性分析模型及其应用 短句来源 The paper presents analysis and sumary for macroscopic models, the main software developing models such as waterfall model, rapid prototype model and fountain model. 本文对各主要软件过程模型如瀑布模型、快速原型模型和喷泉模型等宏观模型进行了分析和总结。 短句来源 更多
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 Macroscopic 宏观 短句来源 models; 五、发展的模式; 短句来源 Quasineutral Limit of the Macroscopic Mathematical Models for Semiconductors 半导体宏观数学模型的拟中性极限 短句来源 The macroscopic and microscopic crack models were also given. 本文还给出了PC／PE共混合金尖锐缺口试样的宏观及微观断裂模型。 短句来源 Macroscopic Observation 宏观 短句来源

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 macroscopic models
 For example, the Angstrom-scale double layer gives rise to nonlinear voltage-current behavior, which is a boundary condition for macroscopic models. A generalized formulation for evaluation of latent heat functions in enthalpy-based macroscopic models for convection-diffusion However, the predicted cavity volume fraction at failure is the same for both the hybrid micro-macro and macroscopic models when the initial cavity density is high. However, the predicted cavity volume fraction at failure is the same for both the hybrid micro-macro and macroscopic models when the initial cavity density is high. Currently available macroscopic models include models that describe heat transfer from metal to mold, fluid flow of liquid metal during mold filling, and stress field in the casting. 更多
 A simple calculation method for charge density distributions of deformed nuclei by using macroscopic model has been proposed. The calculations of charge density distributions for ~(192)Os,~(154)Gd,~(152)Sm, ~(174)Yb and ~(144,148,150,152)Sm nuclei have been performed. The results show that the calculated charge densities are in good agreement with experiments. Consequently, on the base of experimental data of the transition probabilities for ground state to 2~+, 4~+, 6~+ rotational states or its electric... A simple calculation method for charge density distributions of deformed nuclei by using macroscopic model has been proposed. The calculations of charge density distributions for ~(192)Os,~(154)Gd,~(152)Sm, ~(174)Yb and ~(144,148,150,152)Sm nuclei have been performed. The results show that the calculated charge densities are in good agreement with experiments. Consequently, on the base of experimental data of the transition probabilities for ground state to 2~+, 4~+, 6~+ rotational states or its electric multipole moments, The charge density distributions of deformed nuclei can be predicted theoretically by this method. 本文应用原子核的宏观模型提出了一种比较简单的计算变形核电荷密度的方法.具体计算了_(76)~(192)Os、_(64)~(154)Gd、_(62)~(152)Sm、_(70)~(174)Yb及_(62)~(144,148,150,152)Sm等原子核的电荷密度分布.结果表明,宏观模型计算的结果能较好地与实验测量结果相符合.因此,只要根据变形核基态到各转动态跃迁几率或电多极矩的实验值,则可按本文方法,从理论上预言变形核的电荷密度分布. The micro-correction to the nuclear macroscopic model is studied with a simple liquid drop model by fitting the nuclear masses. It is found that the micro-correction given by Moller and Nix is generally applicable with satisfactory results. Possible regions for improvement are indicated. Sampling calculations indicate that their corrections are also applicable to the continuous medium model proposed by the authors. For nuclear ground state, it is suggested that simplified method of micro-correction... The micro-correction to the nuclear macroscopic model is studied with a simple liquid drop model by fitting the nuclear masses. It is found that the micro-correction given by Moller and Nix is generally applicable with satisfactory results. Possible regions for improvement are indicated. Sampling calculations indicate that their corrections are also applicable to the continuous medium model proposed by the authors. For nuclear ground state, it is suggested that simplified method of micro-correction calculation may give similar results. 本文讨论了宏观模型的微观修正.采用简单的液滴模型,通过拟合核质量,讨论了Moller和Nix给出的微观修正的普适性和可能的改进.实例计算表明这种微观修正也大体适用于我们提出的连续介质模型.对核基态讲,用本文建议的简化的微观修正方法,也能获得效果相似的微观修正. In this paper, the composition and functions of SCADA system for gas distribution are discussed. A macroscopic model to simulate the gas networks, which overcomes the limits of the network analysis, is developed. Aiming at minimazing electricity consumption, two optimal control models of compressors for gas network are established. Furthermore the corresponding solutions are given. 本文阐述了城市煤气输配的监控系统的组成及其功能。提出用宏观模型来模拟管网的水力工况,克服了管网平差法的局限性,同时还建立了以压气机耗电量为最小目标函数的二个优化调度数学模型,并提出相应的解法。 << 更多相关文摘
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