基于等针入度的沥青固有与改善性能的流变性分析

为了研究道路沥青固有与改善性能,在以代表高温性能的针入度指标基础上,研究相同等级针入度条件下的两种类型道路沥青在短期老化过程中针入度及其他指标的变化情况,分析不同道路沥青老化机理。同时再利用动态剪切流变实验对沥青进行高温老化分析,由此得出苯乙烯-丁二烯-苯乙烯三嵌段共聚物(styrene-butadiene block copolymer)SBS改性沥青的流变性能和抗变形性均优于基质沥青、等同于沥青的改善性能、优于沥青固有性能的结论。     

“红色经典”视域中的俄苏文学

俄苏文学是中国当代“红色经典”最重要的外部资源和重要研究视点。在嬗变的历史沿革过程中,中国当代“红色经典”叙事与俄苏文学形成了一种弥合与疏离的关系。俄苏“红色经典”对中国当代“红色经典”叙事精神有着极为深远的影响。     

西方隐喻研究理论概述

西方的隐喻研究大致可分为三个阶段：隐喻的修辞学研究,隐喻的语义学研究和隐喻的多学科研究。从整个历史来看,西方的隐喻研究学者提出了对比论、互动论、映射论以及概念合成论等隐喻理论,隐喻研究主要是在这些理论基础上进行,并围绕这几个层面展开。文章在介绍和讨论这些隐喻理论的同时,对它们的贡献及存在的不足进行了评析。     

针织运动服穿着试验中人体的生理应答和心理感觉

选用八种不同纤维制成贴身运动服(T恤衫),通过热和冷两种环境温度中的穿着试验,记录生理应答和心理感觉的结果。对这些结果的分析发现:在不同环境中生理应答和心理感觉是不很相同的,且与手感也是不相同的。     

飘拂草属(Fimbristylis Vahl)果皮微形态特征的比较研究

本文报道了飘拂草属15种、2变种的果皮微形态特征。通过立体显微镜和扫描电子显微镜对果实的形态、果皮的纹饰进行观察及比较研究。结果表明:飘拂草属在果皮微形态特征上存在着较为明显的种间差异,可为种的区分提供依据,同时也为系统发育与演化提供有价值的资料。     

Short-term forecasting of industrial production by means of quick indicators

This paper reports results on building transfer function models with linear combinations of quick indicators as inputs for very short-term prediction of the monthly time series of the volume of industrial production in Finland. The number of input variables in the transfer function models is reduced in two alternative ways: by replacing the original indicators by their two first principal components and by omitting certain indicators. The prediction accuracy of the transfer function models is checked outside the sample and found superior to that of corresponding ARIMA models. Neither of the two ways of reducing the number of input variables leads to consistently more accurate forecasts than the other. It is also found that the prediction accuracy of the transfer function models compares rather favourably with the preliminary values of the volume of industrial production published by the Central Statistical Office during the periods of rapid growth.     

黑龙江桔梗科导管分子的比較解剖学

本文对黑龙江桔梗科6属12种植物营养器官的导管分子进行初步分析,结果发现所有植物根中的导管分子都是单穿孔板类型,但茎中不仅有单穿孔板类型,而且还普遍具有梯状穿孔板类型和过渡类型。但是,由于类群的不同,梯状穿孔板频率及其横隔数也不同,桔梗茎中梯状穿孔板类型出现的频率高且横隔多。而沙参属中梯状穿孔板类型出现的频率极低且横隔数少。     

Discount weighted estimation

The parsimonious method of exponentially weighted regression (EWR) is attractive but limited in application because it depends upon just one discount factor. This paper generalizes the EWR approach to a method called discount weighted estimation (DWE) which allowed distinct model components to have different associated discount factors. The method includes EWR as a special case. The general non-limiting recurrence relationships will be useful in practice, especially when practitioners wish to specify prior information, to intervene with subjective judgement and to derive estimates and forecasts sequentially based upon limited data. Two theorems extend the important EWR limiting results of Dobbie and McKenzie to DWE. The latter permits the derivation of a large class of known processs for which DWE is optimal. The method is illustrated by two applications, one of which uses the famous international airline passenger data. This allows a comparision with the ICI MULDO system which uses a particular two discount factor forecasting method. A companion paper extends the discount methods to Bayesian forecasting, Kalman filtering and state space modelling.     

“德学才识”说——中国古代的文学创作主体论

在中国古代“内重外轻”的文化模式和表情达意的文学倾向中，文学创作主体的能动作用和心灵素质一直受到关注。中明以后启蒙思潮的勃兴和个性意识的伸张，孕育、催生了一系列完整意义的创作主体说。综合而言。古代文学的创作主体论讨论得最多的是作家的“德”、“学”、“才”、“识”及其相互关系。它恰恰反映了中国古代文学本体强烈的表意特征对创作主体的内在要求。     

文学与文化的交相辩证发展——中国当代先锋文学现代性研究论纲

以现代性为视角，在本质上可以看到，西方现代性文化的引进、传播与中国现代性历史语境的生成、曲折演进构成了中国当代先锋文学的历史起点，中国现代性文化语境的复归与拓进是中国当代先锋文学的现实支点。中国当代先锋文学实现的是文学的“文学化”转向，体现的是传统文明向现代文明的转变，它自己已经构成现代文明的本体内容，成为现代文明本身重要的组成部分。