查询词典 cubic system

In this article, 3-D Ising model is simulated by the means of Monte Carlo, such as the simple cubic lattice, the body-centered cubic lattice and the face-centered cubic lattice.

它是一种计算机模拟的方法，采用随机抽样，能够比较逼真地描述真实物理实验过程，精确性好。

According to the sizes and shapes of the zeolite pores, the local arrangement of adsorption sites within the pores in the LDFT models were simulated by the clusters of simple cubic lattice, face-centered cubic lattice, and body-centered cubic lattice structures.

根据沸石孔的尺寸和形状，LDFT模型将氢分子在孔中的吸附位分布近似为简单立方、面心立方和体心立方的团簇结构。

As an example to cubic trigonometric polynomial Bézier,the characters of trigonometric polynomial Bézier curve is analyzed,and deduced that cubic trigonometric polynomial Bézier curve is more smooth than cubic polynomial Bézier curve.

Bézier曲线是计算机辅助几何设计中的一类重要曲线，文献[1]介绍了三次Bézier曲线插值，文献[2]介绍了三次Bézier曲线的保凸插值，但难以解决一端曲率为0，另一端曲率比较大的插值问题。

Because the octree tessellates the object into uniform cubic octants/voxels, this representation allows efficient simulation of heat flow from cubic voxel to cubic voxel.

由于八叉树表示的三维空间形体结构是由大小不同的众多立方体镶嵌而成，它可以有效地模拟热量从一个立方体流向另一个立方体，并动态产生模拟红外图象。

Then, an ideal random-packed-sphere model with simple cubic, body-centered cubic and face-centered cubic structures is presented to predicate the specific protonic and electronic conductivities of the catalyst layers. A correlation equation of the specific conductivity is obtained and the model is validated by the good agreement between the calculations and the measured data.

然后，分别用简单立方、体心立方和面心立方三种自由堆积球结构首次建立了描述催化层有效质子和电子传导率的理论预测模型，分析了电解质本体电导率、球半径、接触系数和接触角对质子传导的影响，得出催化层有效质子和电子传导率的计算公式，模拟结果与实验数据吻合良好，证实了模型的有效性。

In a natural state, the Junggar Basin, inland river sub - 4 Drainage District:(1) Buluntuohai water; Health ulungur water, out of Yamaguchi average annual runoff of 11.3 billion cubic meters, the last 10 years into the lake for many years for the most amount of 600 million cubic meters, most juveniles is only B 01.5 billion cubic meters; in 1970 from Elgin Qi period after the introduction of part of the river water, B the amount of water level decline eased Buluntuohai.

在自然状态下，准噶尔盆地的内陆河分为4个排水区：（1）布伦托海水系；汇乌伦古河水量，出山口平均年径流量113亿立方米，最近10年入湖水量最多年为6亿立方米，最B少年仅015亿立方米；1970年后从额尔齐期河引进部分水B量，缓和了布伦托海的水位下降。

Plateau basin surrounding karst groundwater resources to strengthen the investigation and identify the volume of 998 million cubic meters of mined / year; Southwest karst areas to 180 billion cubic meters of underground water resources / year, the volume of 77 billion cubic meters of mined / year; Southwest completed eight provinces 339 counties 740,000 square kilometres trees remote sensing surveys; Preliminary identification of the geological environment of the Yellow River source region ecological conditions change, first proposed the freezing cold caused a drop in water level at Sheung Shui and Yuen district water meadow degradation of the important reasons for the deterioration of the environment.

加强鄂尔多斯盆地周边岩溶地下水资源的调查，查明可开采量9.98亿立方米／年；西南岩溶地区的地下水资源为1800亿立方米／年，可开采量770亿立方米／年；完成西南八省339个县74万平方公里石漠化遥感调查；初步查明了黄河源区生态地质环境变化状况，首次提出冻结层上水水位下降是造成高寒草甸退化和源区水环境恶化的重要原因。

Then, it studies the supply chain management system as a complex system to confirm the state existing during operating of the system. After that, it conducts a probability analysis on the state which the system located by applying supplement variable method, and establishes the model of distributed parameter system in a form of partial differential equations. Combining C0 ? semigroup theory in the functional analysis, it conducts a dynamic analysis on the established mathematical model. Using this method, it obtains the mathematical expression of the dynamic solution and the steady state solution, and proves the uniqueness, non-negativity and the asymptotic stability of the system solution. This dissertation applies the Matlab tool and uses two-step, three-step Simpson integral equation to imitate the condition of system solution. Then, it adds possible mode of failure and the optimization adjustment state to the system, based on which it has established the distributed parameter system model which is described by partial differential system of equations. Combining the functional analysis C0 ? semigroup theory, it studies the established mathematical model, and obtains the mathematical expression of the dynamic solution system and the steady state solution. It has proven the existing of uniqueness of the system solution, the asymptotic stability of system solution and the system solution. In addition, it has lying the theory rationale for further analysis and the research on the optimization of system.

本文首先简要综述了供应链理论、可靠性研究、鲁棒性研究以及供应链鲁棒性研究的现状；然后，将供应链系统作为一个复杂系统来分析，确定了系统运行过程中所经历的状态，通过引入补充变量的方法，建立了用偏微分方程组描述的分布参数系统模型，用泛函分析中的C_0 -半群理论得到了系统动态解和稳态解的数学表达式，证明了系统解存在的唯一性、非负性和指数阶渐近稳定性；并借助Matlab工具，利用二阶、三阶辛普森积分方程模拟系统解的性态，并给出系统动态解的仿真图；本文又对上述系统增加了系统可能失效状态和优化调整状态，并在此基础上建立了用偏微分方程组描述的分布参数系统模型，同样用泛函分析中的C_0 -半群理论对所建立的数学模型进行了研究，得到系统动态解和稳态解的数学表达式，证明了系统动态解存在的唯一性、非负性及渐近稳定性，为进一步分析和研究供应链优化奠定了理论基础。

In this dissertation, we optimized the thinkness of each layer of TFEL devices using the layered optimization method to obtain ZnS: Ce〓 TFEL devices. Accoding to the energy level structure of Ce〓, two criteria for distinguishing the EL of Ce〓 were found out, from which it was conduded that the TFEL of ZnS: Ce〓 comes from 5d→4f transition of Ce〓. The measurement of brightness waveform showed that the TFEL of ZnS: Ce〓 was the luminescence from independent centers. and there were the field induced-delocalization in this process anf it〓s the cause of low TFEL efficiency of ZnS: Ce〓. In this dissertation, different influence factors on TFEL of ZnS: Ce〓 were sdudied. The influence of different host lattice is different: The blue/green ratio of ZnS: Ce〓 in hexagonal system of ZnS is larger than that in cubic system of ZnS, and the TFEL peaks in hexagonal system of ZnS moves toward longer wavelength compared with that in cubic system of ZnS. The adding buffer layer was used in this stage. The solubility of Ce〓 in ZnS was small and it was another limit to TFEL brightness of ZnS: Ce〓 device. The solubility of Ce〓 increased ten times when using Li ions as flux, so that the TFEL brightness of ZnS: Ce〓 was enhanced. It was found that the appearing of ZnO in active layer improves the TFEL of ZnS: Ce〓: the brightness and the wave range of ZnS: Ce〓TFEL were enhanced.

本文采用TFEL的分层优化方案，优化组合了各膜层厚度，选择最佳制备条件，得到了ZnS：Ce〓的TFEL；根据Ce〓的能级结构，找到了判别Ce〓的EL的两个简单依据，并据此断定ZnS：Ce〓的TFEL的两个发射峰分别属于Ce〓的〓和〓跃迁；亮度波形测量表明ZnS：Ce〓的TFEL属于分立中心发光，分析认为在此过程中存在着较严重的场致离化，这也是ZnS：Ce〓的TFEL效率较低的一个原因；本文考查了影响ZnS：Ce〓的TFEL的各种因素，发现：基质的晶体结构对ZnS：Ce〓的TFEL有所影响，在六角相ZnS中Ce〓的TFEL优于立方相ZnS中Ce〓的TFEL：发射峰的蓝-绿比相对较大，且光谱向短波方向移动，在此项研究中本文采用了在发光层前增镀过渡层的办法，过渡层为六角晶相的ZnO；限制ZnS：Ce〓的TFEL器件亮度的一个原因是Ce〓在ZnS中的溶解度低，本文用Li离子作助溶剂增大了Ce〓的溶解度，增大幅度为一个量级，并且ZnS：Ce〓的TFEL亮度明显提高；从ZnS：Ce〓的TFEL光谱来看ZnS：Ce〓的TFEL波长覆盖范围较小，亮度也不高，达不到做为白色TFEL材料的要求，需要寻找新的白色TFEL材料；在研究ZnS：Ce〓的TFEL中还发现：发光层中ZnO的出现有利于ZnS：Ce〓的TFEL：发射峰变宽、亮度增大。

Four basic processes are analyzed in detail in network security decision,which are the base of NSDSS security decision. Then, developing strategies and methods are analyzed according to the objective and task of the system. Antetype method with RAD speciality is chosen to lead the developing process of the system. The structure of "Four-Base and Seven-System" of NSDSS is decided, based on which, the Function and Structure of Man-Machine Conversation system, General Management system, Data Base system, Model and Method Base system, knowledge base system, Causing and solving problems system are discussed. The basic theories and methods of each part are discussed. In the designing process of Model Base System, detailed analysis is given to the models of prediction, evaluation and management in the course of security decision. Moreover, basic process and method are discussed on question generation and solution. Then, detailed explanation is provided on the integration and implement of the system. After that, it is suggested that implement of the system should be carried through the process of the system.

论文首先对NSDSS涉及到的相关知识进行了讨论，详细分析了网络安全决策中的四个基本过程，这是NSDSS进行安全决策的基础；随后依据系统的目标和任务，对系统的开发策略和方法进行了分析，选择具有RAD能力的原型法指导整个系统的开发过程；确定了NSDSS"四库七系统"的整体结构；在此基础上，分别探讨了人机对话系统、通用管理系统、数据库系统、模型库和方法库系统、知识库系统、问题生成和求解系统的功能和结构，对各部件的基本原理和实现方法进行了论述；在模型库系统的设计过程中，对安全决策过程中运用到的安全预测、安全评估、安全管理等模型进行了详细的分析；仔细探讨了问题生成和求解的基本过程和方法；较为详细地阐述了系统集成和实施的有关问题，面向系统的成功实现，提出了将系统实施贯串于整个系统开发过程中的思想。

In contrast to the ubiquitous rising-sun-with-rays military flag of the Japanese, Chinese banners and ensigns feature a range of designs.

与遍地都是的太阳军旗不同，中国人的旗帜和徽章设计得各式各样。

From their small corner of Feng's Guangzhou headquarters -- a jumble of pink leashes, squeezable rubber steaks, and plastic doggy Santas for Fido's stocking -- Soleil's designers come up with at least five new products a month.

从Feng 设在广州总部的产品展示柜台上可以看到，Soleil的设计师每月至少设计出5件新产品。