一种计算声表面波在周期栅阵中传播特性的方法

Hashimoto有限元程序是日本Chiba大学研究人员从1973年开始、历时几十年用Fortran语言编写、计算声表面波在周期栅阵中传波特性的一个软件包。该程序能计算Rayleigh波、漏表面波、SH型表面波、表面横波等多种声表面波的传输特性,同时它能适用于一个周期内单根指条、两根指条和多根指条及声表面波在栅阵中斜入射的情况。该程序已在声表面波（SAW）研究人员中得到了广泛的应用。     

基于装配模型的注塑模尺寸关联CAD系统

本文针对注塑模具的设计特点,在零件图参数化的基础上,讨论了注塑模设计过程中,如何描述记录装配体中的约束关系,以及建立和维护装配模型所涉及的关键技术。     

加载速率对焊接接头断裂行为的影响

在不同温度、不同加载速率下，对典型建筑结构用钢及其焊缝进行拉伸试验，测试其基本力学性能。采用能综合考虑加载速率及高加载速率下材料温度变化的R参量，确定本构关系。通过断裂力学试验，测试不同温度及加载速率下供试钢材及其焊接接头的断裂韧度值。随加载速率的增大，断裂韧度降低，但存在有较大的分散性。不同加载速率下裂纹尖端应力场数值分析结果表明，裂纹尖端最大主应力随加载速率的增大而升高。最后基于局部法，研究不同加载速率下母材及接头的断裂行为。局部断裂参量－－威布尔应力不受温度、加载速率的影响，可有效地描述材料的断裂行为。     

FINITE ELEMENT MODELING AND SIMULATION OF WELDING. PART 3: EFFICIENCY AND INTEGRATION

Welding simulation has advanced from the analysis of laboratory setups to real engineering applications during the last three decades. This development is outlined and the directions for future research are summarized in this review, which consists of three parts. This parts focuses on computational strategies and how they are integrated with other methods to facilitate the use of simulations in engineering. These developments have lead to the increased application of welding simulations in industry.     

特大型椭圆封头的分瓣计算

对12m近似椭圆封头实施合理的分瓣,创造了足球瓣顶圆的新方法,并进行了瓣片尺寸计算。     

Short-Time Scaling of Variable Orderingof OBDDs

A short-time scaling criterion of variable ordering of OBDDs is proposed.By this criterion it is easy and fast to determine which one is better when several variable orders are given,especially when they differ 10% or more in resulted BDD size from each other.An adaptive variable order selection method,based on the short-time scaling criterion,is also presented.The experimental results show that this method is efficient and it makes the heuristic variable ordering methods more practical.     

Propagation algorithms for lexicographic ordering constraints

Finite-domain constraint programming has been used with great success to tackle a wide variety of combinatorial problems in industry and academia. To apply finite-domain constraint programming to a problem, it is modelled by a set of constraints on a set of decision variables. A common modelling pattern is the use of matrices of decision variables. The rows and/or columns of these matrices are often symmetric, leading to redundancy in a systematic search for solutions. An effective method of breaking this symmetry is to constrain the assignments of the affected rows and columns to be ordered lexicographically. This paper develops an incremental propagation algorithm, GACLexLeq, that establishes generalised arc consistency on this constraint in O(n) operations, where n is the length of the vectors. Furthermore, this paper shows that decomposing GACLexLeq into primitive constraints available in current finite-domain constraint toolkits reduces the strength or increases the cost of constraint propagation. Also presented are extensions and modifications to the algorithm to handle strict lexicographic ordering, detection of entailment, and vectors of unequal length. Experimental results on a number of domains demonstrate the value of GACLexLeq.     

消光法快速检测酪蛋白溶液浓度的研究

针对凯氏定氮法无法快速、直接测量牛乳蛋白含量的问题,通过理论和实验数据分析,建立了利用消光法快速测量酪蛋白模拟液浓度的理论模型,利用Matlab拟舍得到了消光度和酪蛋白含量的关系曲线.经研究表明,关系模型的建立使得酪蛋白含量能够被快速检测出来,证明该方法具有快速检测酪蛋白含量的可行性,这就为快速检测蛋白质含量仪器的研制和在线检测提供了理论依据.     

论"新、特、奇"与建筑的美

该文对“新、特、奇”的内涵作出了界定,阐明了“新、特、奇”与建筑美的辩证统一关系,认为“新、特、奇”是我国建筑美寻求多样化发展的一种探索,是中国建筑面向世界、面向未来、面向现代化的必由之路。同时对建筑形式的“新、特、奇”与城市的美的关系表述了自己的看法。     

论中外合作办学中的若干关系——以武汉科技学院的实践为例

以武汉科技学院的办学实践为例,论述了中外合作办学项目发展路径选择上要立足社会需求,充分发挥自身办学特色,做到＂人无我有＂、＂人有我特＂。办学过程中,要始终坚持办学质量第一,绝不能为了节约成本降低质量要求。在项目（机构）运行中,要理顺管理体制和运行机制,处理好与学校及相关院系的关系,还要以平等双赢为原则,处理好与外方的关系。