聚类分析法在高职院校订单式培养学生综合素质评价中的应用

订单式”人才培养模式的建立为高职教育教学改革注入了新的活力。但是，由高职院校因为缺乏有效的培养过程控制与竞争机制，也出现了影响该模式的良性循环和可持续发展的诸多问题。鉴于此，应尽快完善“订单式”人才培养模式中的过程控制与考核机制，建立一套科学、完备的考核指标体系是当务之急。对于订单式培养学生的综合素质评估结果，可以通过相关聚类分析方法，对订单班学生综合素质评估结果进行科学合理的分类，建立完善订单班学生能进能出、滚动淘汰的动态管理模式，达到订单式培养不仅“定数量”，更注重“定质量”的理想状态。     

Planning for the 1950 Censuses of Population and Agriculture

The change from the z of “Student's” 1908 paper to the t of present day statistical theory and practice is traced and documented. It is shown that the change was brought about by the extension of “Student's” approach, by R.A. Fisher, to a broader class of problems, in response to a direct appeal from “Student” for a solution to one of these problems.     

Determinants of fertility levels and change among developed countries: 1958–1978

This article provides a multivariate cross-national test of the hypothesis that national population/family planning policies have effected levels, and changes in fertility in developed nations over the past two decades. Variation is assessed in the total fertility rates (TFR) in 1978, and in the change in these rates between 1958 and 1978, among thirty developed countries. Measures include socioeconomic development, divorce, percent in consensual unions, female labor force participation, abortion policy, and level of contraceptive use by married couples and, government population/family planning policy. Seventy percent of the variation in 1978 TFR is related to the percent contracepting, female labor force, and the population/family planning policy measures. These are the only measures with significant direct effects. A longitudinal analysis of 1958 to 1978 change in TFRs is also conducted. This model increases R² to 75%, and the three independent variables remain significant. Implications of these findings for policy makers interested in increasing or decreasing fertility rates are noted.     

模糊取式推理的R0方法

用R0蕴涵算子描述了模糊命题“若A则B”,并通过一个例子给出了运用模糊取式推理的R0方法进行推理的具体操作过程．结果表明,运用该模糊推理得到的结论是与人们的思想相吻合的．     

对推进贵阳市建设循环经济型生态城市的思考

贵阳市政府作出将贵阳市建成全国首个循环经济生态城市的重大决定,把贵阳市带入一个崭新的发展阶段。贵阳市建设循环经济型生态城市既有优势也有劣势,而政府的积极倡导和扶助,相应法律、法规的建立,投资政策和项目的选择等都是应予关注的问题。     

“S+V+R+O”双核谓词格框架研究

在“S +V +R +O”句式中 ,由于述语中心动词V价的不同、宾语的不同 ,补语R语义指向的不同 ,主语S、述语V、补语R、宾语O构成一个复杂的语义网络。弄清楚其中的语义网络 ,就可以着手建立“S +V +R +O”双核谓词格框架了。建立双核谓词格框架 ,可以促进对句子的理解 ,促进现代汉语格系统的建立     

从里尔克的《豹》看抒情主体的结构

在抒情诗中,潜在于诗句之外的第一人称主体不止一个,"抒情主体"也不仅仅要么是对"诗人",要么是对诗歌世界中的某个对象性"人物"的指涉。以《豹》为个案对抒情主体进行的结构分析提示,诗歌中有多个潜在主体的代换。     

A comparison of classification models to identify the Fragile X Syndrome

The main models of machine learning are briefly reviewed and considered for building a classifier to identify the Fragile X Syndrome (FXS). We have analyzed 172 patients potentially affected by FXS in Andalusia (Spain) and, by means of a DNA test, each member of the data set is known to belong to one of two classes: affected, not affected. The whole predictor set, formed by 40 variables, and a reduced set with only nine predictors significantly associated with the response are considered. Four alternative base classification models have been investigated: logistic regression, classification trees, multilayer perceptron and support vector machines. For both predictor sets, the best accuracy, considering both the mean and the standard deviation of the test error rate, is achieved by the support vector machines, confirming the increasing importance of this learning algorithm. Three ensemble methods - bagging, random forests and boosting - were also considered, amongst which the bagged versions of support vector machines stand out, especially when they are constructed with the reduced set of predictor variables. The analysis of the sensitivity, the specificity and the area under the ROC curve agrees with the main conclusions extracted from the accuracy results. All of these models can be fitted by free R programs.     

局部环上典型群的非双曲型

引入域上典型群的生成问题所得的成果；对局部环R上典型群生成问题研究，构造度量函数及一平延，为局部环R上典型群向域F上的典型群导入，给出典型群的非双曲型．     

翻译的政治:马儒翰与第一次鸦片战争

鸦片战争期间,中英双方都存在语言沟通的难题.但是,英方由于聘用马儒翰等人担任翻译,有效解决了政治沟通和情报收集等问题.他们充分借助马儒翰等人的中文知识,作出了合理的战略决策和军事安排.而反观中方,林则徐之后的几个主帅,出于怀疑汉人、明哲保身等心理,竟将为数不多的几个译员拒之门外,倚赖英方的马儒翰"居中翻译".在缺乏翻译的情况下,清军前线主帅根本无法摸清敌人的真实动向,更无法核对所签条约文本的准确性.结果,清政府不但丧失了战争主动权,也丧失了谈判主动权,造成了很多原本可避免的损失.