一种新的低空间分辨力阵列触觉图象的处理方法

本文根据低空间分辨力阵列触觉图象的特点，分析了噪声来源、形式和分布，提出了一种新的基于平滑的噪声消除方法。讨论了在图象基本顶点的基础上，运用了顶点分裂和合并技术找出相应的图形顶点，并通过最小二乘法复原出离散图象的连续轮廓，从而为提高触觉图象辨识率奠定了基础．     

浅谈大学公共英语课堂情境教学

在大学英语教学中，教师应该努力创设一个良好的教学环境，不断地开展各种各样的课堂活动来创造自由交际的气氛，从而激发学生兴趣，启发学生动口，提高教学效果。具体的教学技巧与方法有：创设情境、巧设问题，紧扣专业特色、表演示范、变化讲授、整体教学等。     

Statistical tests on two characteristics of the shapes of cluster diagrams

A cluster diagram is a rooted planar tree that depicts the hierarchical agglomeration of objects into groups of increasing size. On the null hypothesis that at each stage of the clustering procedure all possible joins are equally probable, we derive the probability distributions for two properties of these diagrams: (1)S, the number of single objects previously ungrouped that are joined in the final stages of clustering, and (2)m _k, the number of groups ofk+1 objects that are formed during the process. Ecological applications of statistical tests for these properties are described and illustrated with data from weed communities of Saskatchewan fields.This work was supported by the Natural Sciences and Engineering Research Council of Canada.     

微机数据发生器与逻辑分析仪构成的现代数字测试系统

本文着重结合我们在数字测试领域中取得的成果,从技术和经济性两个方面来探讨现代数字系统的测试,并给出了通用、经济和方便的测试系统方案。     

应用聚类分析方法,研究学生类型

根据首都师范大学数学系１９９４级４３名学生在１９９４～１９９５学年度１０门学科考试分数，采用聚类分析方法，对学生进行分类，以此为教育评价与因材施教提供依据．     

To combine or not to combine? issues of combining forecasts

This paper addresses issues such as: Does it always pay to combine individual forecasts of a variable? Should one combine an unbiased forecast with one that is heavily biased? Should one use optimal weights as suggested by Bates and Granger over twenty years ago? A simple model which accounts for the main features of individual forecasts is put forward. Bayesian analysis of the model using noninformative and informative prior probability densities is provided which extends and generalizes results obtained by Winkler (1981) and compared with non-Bayesian methods of combining forecasts relying explicitly on a statistical model for the individual forecasts. It is shown that in some instances it is sensible to use a simple average of individual forecasts instead of using Bates and Granger type weights. Finally, model uncertainty is considered and the issue of combining different models for individual forecasts is addressed.     

Developing the methodology of TSI: From the oblique use of methods to creative design

During the last 13 years, a dialogue has been conducted in the Critical Systems literature on the subject of choice betwen methods. However, in the late 1980s and early 1990s, researchers went in two separate directions. One direction involved an exploration of the “creative design of methods.” This is when the problem situation is understood in terms of a series of systemically interrelated research questions, each of which might need to be addressed using a different method, or part of a method. A synthesis is generated that allows each individual research question to be addressed as part of a whole system of questions. The other research direction involved the development of “Total Systems Intervention” (TSI), a meta-methodology that, amongst other things, encourages the creative exploration of the problem situation prior to the choice of methods. One of the latest innovations in TSI is a theory of the “oblique” use of methods. This is the use of methods for purposes other than those they were originally designed for. However, it is argued here that all the case studies that have been subject to an “oblique” interpretation can be better explained if they are seen as examples of the creative design of methods. We can therefore bring together the two strands of research that have hitherto been pursued separately in the Critical Systems literature. it is suggested that TSI can be enhanced by an understanding of the creative design of methods because the latter allows us to explain the purposive, flexible, and responsive way in which TSI is most successfully used in practice.     

^182Os核的推转壳模型处理

利用推转壳模型的粒子数守恒方法计算了＾１８２Ｏｓ核能谱，带交叉频率，带间相互作用强度，顺排角动量等，并对＾１８２Ｏｓ核波函数的ｓｅｎｉｏｒｉｔｙ结构进行了分析，在计算过程中，根据不同的阻塞情况适当考虑了Ｃｏｒｉｏｌｉｓ减弱，结果表明，以上各种量的计算值与对应的实验值都能较好的符合。     

一维动边界问题的变时间步长方法

本文介绍了求解一维常物性动边界问题的MVTS方法,对其迭代方法作了较为彻底的改进,大大减少了计算时间。文中还将VTS方法推广到一维变物性动边界问题,提出了直接计算法,与目前工程上较为通行的变换法作了比较,结果表明直接法比变换法有更大的优越性,可以大大减少计算工作量。     

散状物料水分的电阻、电容差动测量方法

提出了以数学模型为基础的散状物料水分RC双参数差动测量方法,以期克服物料堆密度对测量结果的影响。以煤粉作试样,实验结果表明,具有一定的实效。