Apriori算法及其改进算法Apriori—new的应用分析

对Apfiofi算法进行应用分析，针对其不足之处，提出一种新的改进型算法——Aprior—new，给出该算法的工作过程，并对该算法进行应用分析。将两种算法进行应用对比，结果表明．Apnofi—new算法占用内存少，执行效率更高。     

The Slice Algorithm for irreducible decomposition of monomial ideals

Irreducible decomposition of monomial ideals has an increasing number of applications from biology to pure math. This paper presents the Slice Algorithm for computing irreducible decompositions, Alexander duals and socles of monomial ideals. The paper includes experiments showing good performance in practice.     

可k—重图序列的充要条件与实现算法

每对顶点之间至多有Ｋ条边相连接且无自环的图称为Ｋ－重图；一个非负整数序列π＝（ｄ１，ｄ２……，ｄｐ）称为可Ｋ－重图序列的，如果存在某个Ｋ－重图Ｇ，使得它的度序列π（Ｇ）＝π。本文对于可Ｋ－重图序列的基本特性进行了为详细地研究。引入一种称为向量与正整数的减法运算，并对这种运算的基本性质进行了详细地研究。在此基础上获得一个非负整数序列π＝（ｄ１，ｄ２……，ｄｐ）是可Ｋ－重图的充要条件；进而给出了可Ｋ－     

An algorithm for computing standard errors from categorical data

Many investigations in genetics, as well as other disciplines, give rise to sets of counts in classes. From such a set of counts one or more parameters will be estimated. This paper gives a conceptually simple, general procedure for computing the standard error of estimate. The method is based on a formula of R.A. Fisher [4] which involves the partial derivatives of the estimator, taken with respect to the categorical frequencies. Using only the formula for calculating the estimate itself, approximations to the derivatives are calculated from the data, thus bypassing the need to obtain them analytically. The technique can be applied to different estimators of the same parameter from one set of data. The same idea can be applied to a variety of problems. Its virtue is that of conceptual simplicity and generality.     

基于人工鱼群算法和模糊C-均值聚类的洪水分类

为了克服FCM算法依赖初值的缺点，将人工鱼群算法（AFS）引入模糊C-均值聚类，提出了一种新的聚类算法，应用于洪水分类研究。新算法将聚类中心看作食物源，通过样本抽样产生初始鱼群。利用人工鱼群算法全局寻优、快速收敛的特点，得到一个较优的初始聚类结果，再使用FCM算法进行局部搜索。避免了单纯的FCM算法因初值选取不当，而容易陷入局部最小的缺陷。同时新算法给出了洪水等级划分的科学依据。实验结果表明，新算法具有比FCM算法更好的性能表现，使得到的分类结果更加准确合理。     

基于DSP的光纤电流互感器二次侧信号处理

用TMS320F206实现了有源式光纤电流互感器二次侧输出信号的处理，包括真有效值（RMS）的计算、互感器低压侧显示仪表的实现和电力系统继电保护的数字接口的实现等，给出了硬件设计和软件设计方法。     

Experimental investigation of concrete-filled cold-formed high strength stainless steel tube columns

This paper presents an experimental investigation of concrete-filled cold-formed high strength stainless steel tube columns. The high strength stainless steel tubes had a yield stress and tensile strength up to 536 and 961 MPa, respectively. The behaviour of the columns was investigated using different concrete cylinder strengths varied from 40 to 80 MPa. A series of tests was performed to investigate the effects of the shape of the stainless steel tube, plate thickness and concrete strength on the behaviour and strength of concrete-filled high strength stainless steel tube columns. The high strength stainless steel tubes were cold-rolled into square and rectangular hollow sections. The depth-to-plate thickness ratio of the tube sections varied from 25.7 for compact sections to 55.8 for relatively slender sections. The columns had different lengths so the length-to-depth ratio generally remained at a constant value of 3. The concrete-filled high strength stainless steel tube specimens were subjected to uniform axial compression. The column strengths, load-axial strain relationships and failure modes of the columns were presented. The test strengths were compared with the design strengths calculated using the American specifications and Australian/New Zealand standards that consider the effect of local buckling using an effective width concept in the calculation of the stainless steel tube column strengths. Based on the test results, design recommendations were proposed for concrete-filled high strength stainless steel tube columns.     

Gravure offset printing of polymer inks for conductors

A gravure offset printing process has been developed for Ag-filled polymer conductor ink. Pad printing and roller type printing have been used. Curing and electrical properties have been studied. A roller type of gravure offset printing has been used to evaluate the printing process and pad printing to print on the non-planar substrates. Based on differential scanning calorimetry (DSC) and resistivity measurements during ink curing, it was found that the ink had an optimum curing temperature of 140 °C. Square resistance of 300 and 150 μm wide lines can be as low as 20 and 28 mΩ/sq., respectively, for 7–8.5 μm thick line. The minimum line width was 70 μm. This minimum line width can be reduced with different ink solvents, but in this case the line thickness suffers and the square resistance increases, respectively.     

智能3P控制器(二)-算法及控制规则设计

本文是在文研究分析的基础上，具体研究分析了智能3P控制器的算法及控制规则集，智能3P控制器依靠准确地识到误差的各种特征而做出的相应决策，并以多模态转换，开闭环相结合的控制模式进行控制，使智能3P控制器能够获得满意的控制性能。     

方锥形件拉深整形凹模受力变形的数值模拟分析

方锥形件一般通过拉深整形工艺成形，整形压力大，凹模变形也较大，成形零件的精度不容易控制；根据整形凹模的结构特点和它在整形工艺中的受力状态，运用有限元方法对凹模在整形压力下的变形进行计算，分析凹模变形对成形零件精度的影响，并就凹模的设计与加工精度提出合理建议。