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     

The Quality of Stakeholder-Based Decisions

The increased use of stakeholder processes in environmental decision making has raised concerns about the quality of decisions these processes produce. Some claim that stakeholders make inadequate use of scientific information and analysis and are all too ready to sacrifice technical quality for political expediency. This article looks to the case study record to examine the quality of the decisions from stakeholder-based processes. The data for the analysis come from a "case survey," in which researchers coded information from 239 published case studies of stakeholder involvement in environmental decision making. These cases reflect a diversity of planning, management, and implementation activities carried out by environmental and natural resource agencies at many levels of government. Overall, the case-study record suggests that there should be little concern that stakeholder processes are resulting in low-quality decisions. The majority of cases contain evidence of stakeholders improving decisions over the status quo; adding new information, ideas, and analysis; and having adequate access to technical and scientific resources. Indeed, data suggest that it is the more intensive stakeholder processes--precisely those that have aroused recent concern--that are more likely to result in higher-quality decisions.     

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.     

毫米波高增益大功率收发组件研制

提出了一种可用于雷达的毫米波收发组件的实现方案。组件包括两个几乎完全相同的接收通道和一个发射通道,接收通道采用两次混频将毫米波信号变为50MHz中频,而发射通道则采用两次上变频将50MHz信号变为毫米波频段的信号发射出去。该文分析了收发组件的设计原理,讨论了组件方案选择,并给出了测试结果。收发组件的各项技术指标基本达到设计要求:在10MHz的工作带宽内,连续波发射功率达1W,接收机噪声系数小于4.5dB,接收通道的净增益超过100dB。     

国内“协作学习”研究的回顾与展望

本文主要对十几年来国内学者在"协作学习"方面的研究成果作了回顾与展望.国内学者对"协作学习"的研究与探讨经历了萌芽、缓慢发展和快速全面展开的三个阶段.主要的研究成果可归纳为以下几个方面:1)各个学科教学中的应用研究;2)协作学习模式的探讨;3)协作学习的开展方法与策略;4)网络协作学习的实践研究;5)协作学习中教师和学生角色的转换.但是同时也存在着一定的问题,如研究的广度和深度不够,以及对协作学习效果评价的研究太少等等.     

关于房地产泡沫量的测度研究

房地产基础(内在)价值理论是评估房地产资产泡沫的依据.而只有准确评估房地产资.产的基础价值,投资者和决策者才能正确认识房地产泡沫问题.文章首先对Ramsey模型做了改进.使之更具有实用价值;接着利用改进后的Ramsey模型,测算了我国1991～2006年房地产泡沫.研究结果表明,我国房地产经历了一个由正泡沫到无泡沫负泡沫、反复循环的过程.