一种新型气缸及其动态位移的监测

介绍了一种带有位移传感系统的新型气缸及其位移传感系统的结构特点；据此开发一个用于计算机控制系统的位移反馈信号的处理与计数系统，以达到对这种对新型气缸动态位移的监测，并给出了计数系统性能实验数据及应用此监测系统的气缸动态位移特性实验结果。     

带有讨厌参数的经验似然比置信区间

在许多情况下，形如θ０＝ＥＨ（Ｘ，μ）是人们所感兴趣的参数，这里Ｈ（·，·）是一已知在Ｒｄ×Ｒｋ上的连续实函数，其中，μ∈Ｒｋ是一讨厌参数，利用经验似然比泛函给出了θ０的经验似然比置信区间，属非参数方法，但其结果却类同于参数下的Ｗｉｌｋｓ定理和Ｏｗｅｎ的工作，同时给出了一些有用实例．     

二次通用旋转试验设计的改进

本文针对目前二次通用旋转试验设计中存在的问题，给出了一种改进的方法。     

考虑人类活动影响的流域水文模型参数的确定

结合石头口门水库，详细阐述了考虑人类活动影响流域水文模型参数的确定方法。以时间、累积净雨量和径流修正系数来描述径流的人类活动影响；从调查流域基本情况入手，由人机交互方式模拟确定流域水文模型参数和人类活动影响参数。将人类活动影响纳入流域水文模型参数确定过程中，可更深刻地了解流域水文规律和认识人类活动对径流的影响。     

轴类件的参数化造型与设计

介绍了以互Ｉ－ＤＥＡＳ为支撑软件，实现油田井下工具中最常用零件一轴类件自动参数化造型的方法，大大提高了轴类件的设计造型效率，并为整机装配造型和有限元分析提供了有利条件。     

分散染料溶解度参数的计算及应用

用Small、Hoy、Krevelen和Fedors基团增量法,对50只蒽醌、偶氮分散染料的溶解度参数进行了计算,并作了比较。对Small法中—NH_2、—NO_2、—NH—、—N—基团的吸引力常数作了补充。确认用于计算分散染料及涤纶纤维溶解度参数的较好方法是Hoy法。且发现:①当染料的溶解度参数与涤纶的溶解度参数接近时,染料的耐升华牢度可达4—5级;②分散染料摩尔体积与其匀染性几乎呈反比关系,当摩尔体积为210—340cm~3/mol时,匀染性能可达3—4级;③分散染料的扩散系数随着其摩尔体积的增大而减小,其减小趋势逐渐变缓。     

不同含氮量硝化纤维素浓溶液体系的相溶性与表观粘度

本文研究了三种不同含氮量的硝化纤维素(NC)分别与邻苯二甲酸二乙酯(DBP)、邻苯二甲酸二丁酯(DBP)、三醋酸甘油酯(TA)、二硝基甲苯(DNT)和硝化甘油(NG)组成浓溶液体系的相溶性。 实验结果得出:1)3~#NC分别与DEP、DBP、TA、DNT和NG所组成体系相溶性的顺序为;3~#NC/DEP>3~#NC/TA>3~#NC/DBP>3~#NC/DNT>3~#NC/NC,2)2~#NC分别与DEP、DBP和TA所组成浓溶液体系相溶性的顺序为:剪切速率(?)>6×10~(-5)秒(-1)时,2~#NC/DEP>2~#NC/DBP>2~#NC/TA;(?)<6×10(-5)秒(-1)时。~#NC/DEP>2~#NC/TA>2~#NC/DBP。3)1~#NC分别与DEP、DBP和TA.所组成浓溶液体系相溶性的顺序为:1~#NC/DEP>1~#NC/DBP>1~#NC/TA。结果表明,不同氮量NC浓溶液体系的η。与体系的溶度参数差值有关。     

动态力识别的时域方法

本文提出一种识别动态力的非直接量测时域方法。首先将结构系统进行模态坐 标变换而得到无耦合的运动方程，然后把在一定微小时间间隔内的动态载荷作为一 个阶跃函数，再由实际量测或有限元分析得到系统的频响特性和量测到的该动态力 的结构响应确定模态坐标中的这一阶跃函数，就可得到动态力的时间历程。 以一个仿真实例说明方法的应用，其结果表明精度是好的，并对该方法应用中 的一些问题进行了探讨。     

Landau theory of martensitic transformation in Fe-Mn-Si based alloys

Considering the features of martensitic transformation in Fe-Mn-Si based alloys, the Landau theory is established by introducing the density of stacking faults as a new order parameter ηand the corresponding free energy function. By using such an order parameter, the stacking fault mechanism of the nucleation and growth for the γ(fcc)→ε(hcp) martensitic transformation can be reasonably explained, and a further detailed mechanism is proposed. The stacking faults are generated and overlapped in an irregular form at the beginning and then becoming regular to create some transition structures till a stable phase forms at a certain temperature. The importance of the interface soliton is to complete the transformations into various structures of martensite but not the twinned one. The thermodynamics of fcc→hcp transformation and those between different transition structures are described by the free energy function established in the present note.     

Regularities of formation and lattice distortion of perovskite-type compounds

Based on 489 known perovskite-type complex oxides and a number of other type complex oxides, the pattern recognition-atomic parameter method is adopted to find regularities of the formation and the lattice distortion of the perovskite structure. It has been found that the restriction on Goldschmidt's t factor constitutes only a necessary but not a sufficient condition to form perovskite-type compounds. A more effective mathematical model, which can precisely sum up the regularities of the formation, the lattice distortion,and the cell constants of known perovskite-type compounds and reliably make corresponding predictions on unknown compounds, can be set up by integrating multiple atomic parameters such as ionic radii, ionic valency, and Basanov's electronegativity of constituent elements. Based on it, an intelligent database has been implemented. Its prediction accuracy is tested by eight newly discovered perovskite-type compounds such as Eu(Mn0.5 Ni0.5)O3, etc. (they are not included in the database during the test). The prediction resuits are in agreement with experimental facts.