惯性式微动机构位移性能检测

微机与电容传感器结合实现了惯性式微动机构位移性能的动静态检测，清晰地分辨出了驱动信号周期为５ｍｓ时微位移机构的响应波形．详细推导了测量系统的数学模型、非线性误差的表达式以及极板不平行造成测量误差的理论公式，并给出了误差抑制方法．本文还分析了环境温漂和弹性回复等因素对测量精度的影响．     

Robust positively invariant sets of discrete-time convex polyhedral system family

Certain problems concerning state constraints and control constraints can often be reduced to the study of positive invariance of some subsets of the state space of dynamical systems. The robust positive invariance of given linear state constraint sets of uncertain discretetime systems is studied by the mixed monotone decomposition method. Necessary and sufficient conditions of the robust positively invariant sets are established for the linear discrete-time system family specified by matrix convex polyhedron and additive interval disturbances. Also, sufficient conditions are derived for nonlinear system family. All the conditions are given in terms of the parameters of vertex systems of the system family and are therefore easy to check. Finally, an illustrating example is given.     

巴色会传教士与客家方言研究

巴色会是19世纪中叶以来以香港作为基地专门向客家人传教的基督教教会组织，巴色会传教士编写了大量的客家方言圣经译本和其他的客家方言作。准确地反映和完整地保留6了一百多年前香港新界一带客家方言的基本面貌，并最早使用西方现代语言科学的方法进行分析和研究，达到了当时这一领域的最高学术水平。     

Genetic Algorithm for Injection Mould Design and Moulding

Obtaining the optimal values of the parameters for th e design of a required mould and the operation of the moulding process are diffi cult, this is due to the complexity of product geometry and the variation of pla stic material properties. The typical parameters for the mould design and mouldi ng process are melt flow length, injection pressure, holding pressure, back pres sure, injection speed, melt temperature, mould temperature, clamping force, inje ction time, holding time and cooling time. This pape...     

运动带电粒子在转动球体的强引力场中的电磁辐射功率

本根据加速电荷瞬时辐射功率的公式，应用等效原理和广义相对原理，导出了运动带电粒子在强引力场中的电磁辐射功率的公式，并利用Kerr度规计算了运动带电粒子在转动球体的强引力场中的瞬时电磁辐射功率，对献[6]中子星的亮度为太阳亮度少10个数量级的结果给出一种解释。     

铁屑-H2O2氧化法处理亚铵法草浆造纸黑液

利用废铁屑—H2O2 氧化法处理亚铵法麦草浆造纸黑液,讨论了处理条件。试验结果表明,在适宜条件下:色度去除率90% 左右,CODcr去除率86.9% .该法是一种较为经济而有效的处理草浆造纸黑液的好方法     

铁屑—H2O2氧化法处理亚铵法草浆造纸黑液

利用废铁屑—H     

PERSPECTIVES ON URBAN WATER INFRASTRUCTURE IN CHINA FOR THE 21^ST C0ENTURY： SDMUWEIC MODEL

Based on system dynamics approach, SDMUWEIC model is developed in order to evaluatefuture dynamics of urban water infrastructure development in China. Firstly, this paper presents thebasic structure and characteristics of the model, focusing on water infrastructure‘s dynamicrelationships with population increase, economic development, water resources shortage and waterconservation practices. Secondly, model veracity and robustness tests based on behavior reproductionand uncertainty analyses are illustrated. Thirdly, based on the model, future pattems of China‘s urbanwater infrastructure investment requirements are simulated, and effectiveness of two different policyscenarios are evaluated. Finally, conclusion,; and policy implications are drawn, allowing insights intoChina‘s sustainable water infrastructure policies and managements.     

三角形内部两个动点的一个不等式

运用三角形的基本不等式及Stewart定理,建立涉及三角形内部两个动点的一个不等式,且应用该不等式导出一些已知和新的不等式,最后提出两个猜想。     

挤压铸造碳纤维增强A356金属基复合材料凝固过程的研究

分析了挤压铸造制备ＣＦ／Ａ３５６复合材料的充填过程，研究了工艺参数对基体合金凝固组织的影响．实验结果表明，当预制件中纤维均匀分布时，存在三角形、正方形、六边形３种排列方式，其充填阻力Ｐ＝４．３２ＭＰａ．挤压铸造ＣＦ／Ａ３５６复合材料时，当浇注温度较高时，其凝固发生在整个浸渗过程结束之后，这是由于模具和纤维的激冷作用，而首先凝固的晶坯在浸渗过程中局部或完全重熔；基体合金初生α－Ａｌ相在纤维间隙中形核并逐渐向纤维表面长大；而共晶Ｓｉ相依附碳纤维表面形核并长大，当预制件预热温度高于基体熔点时，共晶Ｓｉ相包覆碳纤维表面长大．随着凝固冷却速率的降低，共晶Ｓｉ相形态发生从蠕虫状、细针状到片状或块状的转变，其尺寸由小到大变化．