浅谈供热系统中的大流量运行方式

就供热系统大流量运行方式的形成及其对系统水力工况的影响进行了分析与探讨，指出了各种大流量运行方式的优缺点，进而提出供热系统大流量运行方式是一种落后的、不经济的运行方式，应该逐渐摒弃。     

Comparative Analysis and Development Trend of Rock Drill

A large number of pneumatic rock drills are being extensively used in a majority of mines in China nowadays, with a high noise level up to 125 dB（A） and large vibration and oil-fog on working-site, which can seriously jeopardize manipulator＇ s body and mind. Aiming at improving drilling environment and labor safety condition, the production mechanism of noise of all sorts of rock drills including pneumatic hydraulic and water-powered rock drills and measures of reducing noise level of pneumatic rock drills in special were discussed and led to the conclusion of that the pneumatic rock drills should be eliminated step by step, the hydraulic rock drill should be developed at full speed and especially the water-powered rock drill should be studied and applied according to the situation of China. In addition, the reasons of why hydraulic rock drills have not yet been used extensively and spread wide areas in China were discussed. The main technical parameters of newly developed leg-supporting water-powered rock drill and the comparation of experimental data between pneumatic rock drill and hydraulic rock drill were listed. The experimental results show that water-powered rock drill possesses the same superior properties as hydraulic rock drill and its noise is less than 20 dB（A） than pneumatic rock drill and there is no oil-fog on the working-site and vibration is reduced largely~ but its drilling speed is raised largely , its structure is simpler, and maintenance is convenient. Therefore, popularizing applying of water-powered rock drill will be an effective way of improving mine working environment according to the current situation of China.     

椭圆回转面的精密加工制造模型

为了使椭圆线的光学性质在椭圆回转面精密加工中得到充分的应用，分别就椭圆回转面的加工给出了三种方案；并给出加工工具参数、数控加工中的行距确定的理论依据和相应几何模型及严格的理论证明；给出了为实现行距在水平进给、轴向进给及刀具轴线相应转角的控制方面的计算公式；最后用实例验证了方案的可行性与模型的可靠性。     

利用Tsuprem4和Medici对200伏VDMOS进行虚拟制造

通过将已知工艺参数与工艺模拟软件Tsuprem4结合起来，将模拟结果直接导入器件模拟软件Medici，对击穿电压及阈值电压，终端保护环进行了模拟计算，获得了具体的设计参数，并对利用这两个软件进行虚拟制造的过程中需要注意的问题进行了阐述．     

基于人因工程的生产线改善研究

以某汽车配件公司生产线改善为例,运用人因工程原理,从人机匹配、人机关系、人机功能分配、人机环境4个方面出发,讨论了对生产线中由人—机—环境组成的人机系统进行的改善。     

表面各向异性场对自旋波本征模的影响

考虑表面各向异性场,在非周期性边界条件下应用界面重参数化方法精确求解了两层铁磁耦合薄膜中的低能自旋波本征值,同时给出对应的本征模.结果表明:在A～B两层铁磁膜中自旋波本征模存在3种形式,分别为体模、界面模和禁闭模;而且表面各向异性场对本征模的表面、界面和传播性质影响很大.     

一致凸Banach空间的一个新的特征性质

给出了Banach空间一致凸的一个新的充要条件:设λ,μ∈(0,1),λ μ=1,f:R R 是单调递增且可微的严格凸函数,X是Banach空间,则X是一致凸的当且仅当对任意ε>0,存在δ>0,使得当‖x‖≤1,‖x-y‖≥ε时,有f(‖λx μy‖)<λf(‖x‖) μf(‖y‖)-δ     

广义Tricomi条件和强伪压缩映射不动点的收敛问题

引入广义Tricomi条件且研究在Ishikawa迭代过程下，强伪压缩映射不动点的收敛性问题，由于所得主要结果不涉及Lipschitz连续性和T的值域的有界性，因此，改进了该问题研究上的一些已有的结论。     

函数的均匀可导性与Lipschitz条件

定义了区间Ⅰ上的均匀可导函数，给出了区间Ⅰ上函数均匀可导的两个充要条件。讨论了函数均匀连续、均匀可导以及满足Lipsehitz条件之间的关系。     

兰州市社区体育现状调查及发展对策

在对兰州市社区体育的组织管理、活动情况、活动场所以及经费等现状调查的基础上,分析了制约该市社区体育发展的主要因素,并对其发展趋势及对策进行了探讨.