山西省霍东矿区太岳井田煤岩煤质特征初探

简述了霍东矿区太岳井田的地理位置及地质构造情况,并对太岳井田的煤层、煤质特征进行了分析研究,为今后的勘探提供了依据。     

运用静态路径积分计算金属纳米粒子超导态下配分函数形式

针对BCS理论研究纳米量级金属粒子超导态下行为时遇到的困难，运用静态路径近似方法，着重处理有限温度下哈特利平均场近似的统计热涨落，得出了金属纳米粒子超导态下的统计力学配分函数形式。     

醋酸泼尼松水中溶解度及正辛醇/水分配系数的测定

药物在水中的溶解度（WS）及正辛醇/水分配系数（P）,是影响其由体外进入体内血液循环的两个重要物理化学参数.本文用溶解度平衡曲线法和振荡法,测得醋酸泼尼松在水中的溶解度为7.8±0.2mg/l（25℃）,其在正辛醇/水中的分配系数P为3.29±0.06.     

基于用户访问路径分析的页面推荐模型

提出一种新的基于用户访问路径分析的页面推荐模型.该模型采用在线处理方式,利用增量图划分方法形成页面聚类,依此生成动态页面推荐.模型以Apache模型的形式实现,可适用于大型商业网站以及内容更新频繁的网站.试验结果表明,该模型具有较好的整体性能.     

Realism bit by bit: Part II. Disjunctive partial reference

In this second paper, I continue my discussion of the problem of reference for scientific realism. First, I consider a final objection to Kitcher’s account of reference, which I generalise to other accounts of reference. Such accounts make attributions of reference by appeal to our pretheoretical intuitions about how true statements ought to be distibuted among the scientific utterances of the past. I argue that in the cases that merit discussion, this strategy fails because our intuitions are unstable. The interesting cases are importantly borderline—it really isn’t clear what we ought to say about how those terms referred. I conclude that in many relevant cases, our grounds for thinking that the theoretical terms of the past referred are matched by our grounds for thinking that they failed to refer, in such a way that deciding on either result is arbitrary and bad news for the realist. In response to this problem, in the second part of the paper I expand upon Field’s (1973) account of partial reference to sketch a new way of thinking about the theoretical terms of the past—that they partially referred and partially failed to refer.     

2-连通图中点不交路的划分问题

给定一个阶为n的2-连通图G=(V;E)及一个正整数k,考虑在邻域并条件下G被分成k条点不交路的问题,得到下面的结果,对G中任何四个独立点x1,x2,y1,y2∈V,满足|NG(x1)∪NG(x2)| |NG(y1)∪NG(y2)|n-k,则G能被分划分k条点不交的路.     

对PLA二级分解技术中输入变量划分的最小切割法的研究

把一个给定ＰＬＡ分解成二级串级的ＰＬＡ电路，使该ＰＬＡ电路的总面积较原给定的ＰＬＡ的面积为小，这就是所谓ＰＬＡ二级分解技术，在这个技术中首先要解决输入变量的划分问题，本文对以图论为基础的为量划分的最小切割法进行分析，并用Ｃ语言对该算法进行程序实现，然后通过实验对算法中的两个关键系数α、β的值作了估计。     

信号到达角的快速估计算法研究

针对将FFT算法用于空域信号处理中存在受空间阵元数的限制,分辨率不高,无法识别相距较近的两个目标的问题,对等距线阵的DoA估计算法进行了研究,提出了基于空间分割的快速MUSIC算法。此算法在FFT算法粗略估计的若干局域子空间内进行谱峰搜索,可大大减小MUSIC算法全空间谱峰搜索的计算量。在单一期望信号的情况下,提出了基于最小二范数的快速DoA估计算法,它可进一步减小计算量。仿真结果证明了对DoA估计的快速算法理论分析的正确性和算法的有效性。     

大硬盘安装WindowsNT与Windows98双启动的方法

详细论述了在大硬盘上安装WindowsNT和Windwos98双启动的过程，解决了大硬盘安装双发区困难的问题。     

Fast Computation of Sparse Data Cubes with Constraints

For a data cube there are always constraints between dimensions or among attributes in a dimension,such as functional dependencies.We introduce the problem that when there are functional dependencies,how to use them to speed up the computation of sparse data cubes.A new algorithm CFD (Computation by Functional Dependencies) is presented to satisfy this demand.CFD determines the order of dimensions by considering cardinalities of dimensions and functional dependencies between dimensions together,thus reduce the number of partitions for such dimensions.CFD also combines partitioning from bottom to up and aggregate computation from top to bottom to speed up the computation further.CFD can efficiently compute a data cube with hierarchies in a di-mension from the smallest granularity to the coarsest one.