查询词典 calculus of finite differences

This software carried out the calculation of the integral calculus of Bernhard Riema with draw the function sketch of the Bernhard Riema integral calculus function and together the function that two calculation and integral calculus zone diagrams of the heavy integral calculuses of a function draw.

本软件将实现黎曼积分的计算与绘制黎曼积分函数的函数图形、齐次函数的二重积分的计算与积分区间图的绘制的功能。

Results: The grinding rate of calculus after one lithotrity was 83.5%, of 9 cases calculus run in kidney, other 8 cases were subject to surgery due to renal duct severe twist under calculus.

结果：123例输尿管结石患者一次手术取尽率为86.2%（106例），有9例结石完整进入肾内，8例因结石之下输尿管严重扭曲改其他术式。

holmium laser lithotrity is an optimal way in patient with ureteral calculus that diameter in 2 cm, more inflammatory granulation tissue around calculus and no manifest obstruct under calculus.

对于直径＜2cm、结石处炎症肉芽组织多、结石下段无明显梗阻的输尿管结石，输尿管镜下钬激光碎石治疗仍是最好的选择。

This paper proves that it is impossible for all the theorems in classical propositional calculus to be tautologies in the field of fuzzy propositional calculus, then a quasi formal deductive system is established for fuzzy propositional calculus based on a kind of type algebra.

引入了一种代数，称为模糊公式代数。在这种代数上建立了一个准形式演绎系统，证明了相应的可靠性定理与相容性定理，提出了程度化的ModusPonens规则和HypotheticalSylogism规则

Fractal dimension structure of the Cosmos are explored, and the mathematical foundation, which include the expressions of fractal dimension differential and calculus, regular space integral solutions of fractal dimension differential equations, the fractal calculus definitions of fractal measure as well as the measure computational equation of self-similar fractal, of fractal dimension calculus and fractal measure are given.

摘 要：探讨了宇宙分维构造的形式，给出了分维微积分及分形测度的数学基础，包括分维导数及分维微积分的表述形式、分维微分方程的规整空间积分解、分形测度的分维微积分定义及自相似分形的测度计算方程。

First, this paper introduces a process calculus, the pi-calculus, into the intelligent agent domain, and agent mental attitudes, agents and agent-based systems with dynamic characteristics, agent interactions, and agent cooperations are studied formally in the polyadic pi-calculus.

首先，本文将进程演算引入智能主体研究领域，利用多价pi演算对主体的心智状态、基于主体的系统、多主体交互及协作进行了形式化。

Blood loss volume were 110mL to 480mL. 24 patients had residual calculus when recheck KUB, 7 accepted ESWL, 4 PCN, and 13 automatic removing urinary calculus. IVU showed that renal visualization was well, hydrops obviously decreased, none calculus re-cured or renal pelvis stegnosis.

术后3月复查腹部平片示有24例有结石残留，7例经体外振波碎石，4例经肾造痪管经皮肾镜下碎石，13例泥沙样小结石自动排石。12月复查静脉肾孟造影示肾显影良好，积水明显减少，未见结石复发和肾孟狭窄。

On the background of mobile computing, distributed system, agent system and ontology, the author explores the mobile computing in limited environment at three levels, i.e., mobile computing formal model, mobile ontology and application model. Some targets of the research works include the dynamic ambients calculus, robust ambients calculus and mobile ontology. Some innovative contributions of the dissertation are enumerated as: 1、Proposing a mobile computing dynamic ambients calculus.

论文研究工作基于陕西省十五科技攻关课题&移动嵌入式电子商务平台及关键技术研究&，以移动计算、分布式系统、Agent系统、本体论等相关领域技术为背景，从移动计算形式模型、移动本体论、应用模型三个层次研究了面向受限设备的移动计算技术，内容主要涉及移动计算形式模型中的动态环境演算、抗干扰鲁棒环境演算以及面向移动领域的移动本体论等，研究工作取得了如下创新性成果： 1、提出了跨平台、跨网络的动态环境演算。

The coordinate transformation and numerical integration was executed on the discretized tetrahedral elements based on which the 3-D MT vector-finite element method was implemented. A whole computation framework for 3-D vector-finite element method with unstructured mesh was given. Based on this some typical models were tested which has demonstrated that our algorithm could distinctively avoid problems caused by the fake solution and both the accuracy and efficiency were enhanced which made our algorithm has a bright future for further application.3. According to theory of Sobolev vector space and the discretization of Helmholtz space, the error estimate which was suitable for 3-D MT vector-finite element modeling was deduced by which the procedure of adaptive technique was guaranteed.4. Based on the fully unstructured tetrahedralization and optical strategy, the 3-D magnetotelluric h-adaptive vector-finite element method was presented through combining the error estimate. With this work, the accuracy and creditableness for 3-D MT complicatedly modeling was guaranteed.5. The 3-D magnetotelluric h-adaptive vector-finite element algorithm with unstructured mesh was implemented.

针对非结构化的四面体单元，采用坐标变换和数值积分方法，实现了MT三维矢量有限单元分析，建立起基于非结构化网格的三维MT矢量有限元计算流程，并对典型模型和国际标准电磁模型进行了数值模拟，结果对比和分析表明，基于非结构化网格的三维MT矢量有限元不仅消除了节点型有限元的伪解，而且具有很高的计算精度和速度，有广阔的应用前景。3、根据Sobolev函数的向量空间和Hemlholtz空间的分解，推导出基于残差的三维大地电磁矢量有限元后验误差估计公式，为三维大地电磁自适应矢量有限元数值模拟的实现奠定了基础。4、在完全非结构化四面体单元剖分及优化基础上，结合三维大地电磁矢量有限元后验误差估计公式，提出了基于非结构化网格的三维大地电磁h-型自适应矢量有限元计算策略，保证了对复杂大地电磁模型数值计算的精度和可靠性。5、实现了基于非结构化网格的三维大地电磁h-型自适应矢量有限元计算流程，对典型模型和国际标准电磁模型进行了数值模拟。

In this paper, we consider hyperbolic conservation laws, and the following work has been done to the finite volume method on unstructured meshes :In preface , we introduce the backupground of the oringe of the finite volume method, and point out the limitation of the finite difference methods and the finite element methods, and import the finite volume method.

本文主要考虑双曲型守恒律方程，对二维非结构三角形网格有限体积方法作了如下工作：介绍了有限体积方法的产生背景，指出了有限差分方法和有限元方法中的特点，对有限体积方法的产生和发展给出了比较详细的分析。

The system can be widely used in belt weighing and batching process control,etc.

介绍了基于智能模糊控制的嵌入式配料系统的设计方法，对模糊PID控制过程和系统调零作了重点的讨论，同时给出了PID控制的程序流程图和系统定长调零子程序。

"I dunno," she answered,"but if you show me aroun', I'll recognize it from the lighthouse just outside the porthole."

"我不知道，"她回答说，"如果你能带我转转，我能认出来的，因为灯塔就在舷窗外。"