计算

The ways to deal with other problems in the numerical simulations of injection-molding filling process, such as multicontinued field problems, multigate problems and weldline formation problems, are presented in this thesis, a simplified algorithm is also developed to solve axisymmetrical problems.

一种新的简化的温度场模型用来计算充模过程中熔体前缘附近的温度场，区域内温度场计算时，引入了温度边界层模型，显著简化了计算过程。

The material balance of technology and one hundred thousandtone stages is accomplished, laying a foundation for industrial experiments of bisphenol A ofpolycarbon-stage with HPA method. The characteristics of the process are shown as follows. Thefirst, using reaction distillation technology to make water and toluene to reach azeotropy andremove them promptly, the reaction rate is increased.

绘制了带控制点的流程图，建立了流程优化模拟计算的数学模型并编制了计算机程序，通过输入工艺设计要求，应用该程序很快就可以完成整个流程的模拟计算，应用该程序也可进行整个流程的优化设计计算。

Based on the definition of desertification from the United Nations Convention to Combat Desertification,the potential extent of desertification in China was revised by employing Thornthweite＇s and Penman＇s formulae to calculate humidity index using the records of 671 meteorological stations from 1950 to 1990,and the biogeographical features of the climate types were clarified.

为了客观反映中国荒漠化发生区域，按照联合国防治荒漠化《公约》的定义，利用1950—1990年间全国671个气象站的长时间序列气象数据，分别采用Thornthwaite和Penman计算可能蒸散量的方法计算了湿润指数的分布，然后根据中国气候区划和中国植被区划以及中国荒漠化发生的特点等对计算结果进行了调整，对中国荒漠化潜在发生范围进行了修订，明确了荒漠化各气候类型区的地理涵义。

Data management with Visual FoxPro and data computation with MicrosoftFortran were realized in Estimating BLUP's breeding value and computing inbreedingcoefficient.

在BLUP法育种值估计和计算近交系数中，系统利用Visual Foxpro进行数据准备、整理和Microsoft Fortran进行计算，并通过链接达到数据计算结果与Visual ForPro数据管理的统一。

This thesis dedicated to research the investment control of BT project, researched the risk in the program construction, the compose portion and the factors effecting the investment. The research includes the conception and the character of the BT project; the actualize process and the questions should be pay attention to; the conditions of BT contract and the sector of the compose poison of the contract price. In this part researched the conception of the BT purchase price and concluded that the relation between the purchase price and the investment. Then studied the risk factors that effect the investment according to the character of the project and then brought forward several advices of the contract item about how to share the risk. Studied compose sector and it's calculatingly methods of the construction cost which is the main part of the investment, then studied how to control the cost during the construct process and analyzed project variations as well as how control that. In the end, researched the capital cost of BT program, the main content include the concept of the capital cost, the calculatingly methods using the engineering economic method, the method writer suggest in the thesis according to the project practice, how to control the capital cost, mainly through setting up an account and inspecting it, and regulating the program financing rate in reason.

本论文的研究重点即BT项目的投资控制，围绕该问题，本论文的主要研究内容有，从BT模式和BT项目的基本分析开始，研究了BT模式的基本概念、BT项目的运作过程、基本特征；研究了BT项目的合同条件和合同价款，该部分分析了BT项目的合同结构、BT项目的承发包工作范围、BT项目的回购价款组成和确定；根据项目建设特征分析了影响BT项目投资的风险因素，并且提出了在对风险进行分配和分担类合同条款制定时建议；建设工程费用是构成BT投资的主体费用，本文对其各组成部分的基本构成、计算方式进行了分析，研究了实施过程中管理控制和工程变更及变更控制的问题；文章的最后对构成BT项目投资的资金成本进行了探讨，分析了资金成本的概念和形成，运用工程经济学的基本理论分析了资金成本各部分的基本计算方式，依据现有的工程实践情况提出了本文建议的计算方式，最后分析了如何对资金成本进行控制――主要通过设立资金账户对其进行监管以及对项目融资的利率进行合理规定。

On the basis of the above, the author discusses in detail the calculational method of reliability of frame structure failure-dependent engineering system t...

在此基础上，针对钢筋混凝土平面框架体系可靠度计算分析中的问题，重点阐述了可简化为剪切层模型的框架结构失效相关的工程系统的可靠度计算方法，提出了修正计算列式。

In this paper the author overviews mass magnesia concrete dam thchnical origin, the present status here and abroad, and available primal problems; descripts theexpansive character of magnesia concrete, fundamental force performances and long-term lasting quality, derivates all the equations of temperature field and temperature stress field, analysises the existing canonic calculating autogenous volume deformation model of the micro-expansive concrete, at last select the expansion model of dynamics for calculating.

本文综述了大体积混凝土氧化镁筑坝技术的由来、国内外研究现状、优势及存在的主要问题；叙述了掺氧化镁微膨胀混凝土的膨胀特点、基本力学性能及长期耐久性能；推导了计算温度场及温度应力场的全部公式。对现有计算氧化镁混凝土自生体积变形的几个典型模型进行了深入的研究和分析，阐述了它们各自的优缺点，最终选定动力学模型作为计算氧化镁混凝土自生体积变形的数学模型。

In the towing tank, the calm water resistance experiment of SWATH model ASW-2 with canted struts has been conducted and researched. And based on the above-mentioned work, the method is also adapted to cope with the calculation of wave resistances for both vertical and canted-strut SWATHs. It is shown that the theoretical calculation results agree well with the test results. Compared with some other materials about SWATH, the results in this thesis show better agreement.

作者在船模水池进行了斜支柱SWATH的静水阻力试验研究，并在前面工作的基础上，通过对理论模型的扩展，提出了直/斜支柱SWATH兴波阻力的理论模型和相应的数值计算方法，理论计算与试验结果吻合良好，与所见到的一些SWATH船型的计算资料相比，具有更好的符合程度。

According to the basic principles of neural networks and in combination with 35 examples of actual landslide projects, this paper establishes RBF and BP neural network models respectively. The comparative results of the two models show that RBF neural network model has higher accuracy and fewer errors and is more suitable for the stability evaluation of landslide. Therefore, this model is used to calculate the stability coefficients of Yellow Caoba ancient landslide and predict the stability of the landslide.

根据神经网络的基本原理，结合35个实际滑坡工程实例，分别采用RBF神经网络和BP神经网络建立滑坡稳定性评价模型，利用MATLAB编程求解，并对比了两种模型的计算结果，表明采用RBF网络模型计算出的结果精度高、误差小，更适合于对滑坡的稳定性评价；同时，运用RBF网络模型计算了黄草坝古滑坡的稳定性系数，对其稳定性进行了预测，以验证该方法的有效性。

Reaction trends of catalytic desulfurization of thiophene were determined based on the reaction energy needed, which was obtained with the AM1 calculation results of thiophene and possible carbonium ions on transition state.

采用半经验AM1计算方法，利用静态理论对噻吩在分子筛催化剂上的催化裂化脱硫机理进行了量子化学计算研究，通过对噻吩分子和可能产生的中间正碳离子的量子化学计算，得到各中间反应所需的能量，从而判断噻吩催化裂化脱硫反应的趋势，证实了氢转移反应在催化裂化脱硫中所起的作用。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。