文学之用与作家良知——以《马嘶岭血案》《那儿》为例

文学是对人的精神和心灵的抚慰与引领,是为了让人获得向上、向善、向美的力量;作家是真理的追求者,是人类生存方式的叩问者,是现存价值的怀疑者、批判者。《马嘶岭血案》《那儿》显示了文学的真正价值与作家的可贵良知。在一些知名作家丧失了真诚、良知、责任感与艺术创造力的时候,陈应松、曹征路这两个在当代文坛并不出名的作家,通过这两部作品,显示了他们的良知、追求与创作实力,并为文学赢得了自尊。     

光子相关光谱法测量超细颗粒的理论研究

光子相关光谱学(PCS)是一项近年来取得较大进展的新应用技术,该技术利用悬浮于介质中的散射体的布朗运动所引起的散射光强涨落现象,能测量粒径范围为3nm～3μm的超细颗粒。本文详述了PCS测粒法的基本理论,综述了各种预测颗粒粒径分布的数据处理方法,并提出了对PCS进一步研究的若干问题。     

阿玛尔纳时代埃及与巴比伦的关系

在阿玛尔纳时代,埃及与巴比伦的关系可以分为两个时期:第一个时期,在亚述兴起之前,埃及对巴比伦的政策是通过物质资助来换取巴比伦的支持,而巴比伦在政治上与埃及作了针锋相对的斗争,目的是实现经济利益最大化;第二个时期,亚述兴起之后,巴比伦面临着严重的挑战,为了换取埃及的支持,开始放弃苛刻的经济外交政策,提高了对政治地位的关注,而埃及出于牵制巴比伦的目的,不顾巴比伦的反对最终承认了亚述。     

短波近红外光谱法分析酒中乙醇含量初探

使用短波近红外光谱和多变量校正技术快速准确地测定酒中乙醇含量,研究了纯水、乙醇以及乙醇和水混合体系的光谱特征。用多元线性回归(MLR)和主成分回归(PCR)分析了数据。该法分析酒样具有方便、快速的优点。     

柿叶的材料特性表征

本文应用化学分析方法、拉曼光谱及差示扫描量热仪 ( DSC) ,从材料的角度对柿叶进行了表征 .化学分析结果显示柿叶中纤维素含量约 68.2 8%、半纤维素约7.5 4%、木质素约 1 1 .70 % ,其余的是一些灰分及金属物质约 1 2 .48% .而这些特征也被拉曼光谱所证实 .DSC的结果说明柿叶的玻璃化温度约为 1 82 .92℃左右 ,高于纤维素和半纤维素 .这些结果将有利于开发以柿叶为资源的纤维类产品     

偏最小二乘法-近红外漫反射光谱法快速分析西米替丁粉末药品

研究了用偏最小二乘法(PLS)同近红外漫反射光谱结合,对西米替丁粉末药品进行快速定量分析的方法,建立了最佳的数学校正模型。讨论了波长间隔和主成分数对PLS定量预测能力的影响,预测了未知样品,结果令人满意。     

Near Miss,Gambler’s Fallacy and Entrapment: Their Influence on Lottery Gamblers in Thailand

Near miss, gambler’s fallacy and entrapment are hypothesized to influence gambling behavior but their individual impact on gambling behavior and their relationships have not been investigated. This study examines the direct and mediated effects of near miss, gambler’s fallacy and entrapment on lottery gambling among Thai lottery gamblers. Two groups of 200 lottery gamblers participated in the study. One group used superstitious methods to search for lottery numbers to bet, whereas the other group simply bought their tickets from lottery stalls. The superstitious group shows higher levels of near miss, gambler’s fallacy, entrapment and lottery gambling. Three models of relationships among near miss, gambler’s fallacy, entrapment and lottery gambling were constructed using LISREL program. The model that shows a direct effect of near miss, and one that shows a mediated effect of near miss fit the data equally. The results confirm a gambler’s fallacy and entrapment as starting points in the theory of cognitive psychology of lottery gambling and the generalization of near miss in gambling motivation.     

Edgeworth and Moment Approximations: The Case of MM and QML Estimators for the MA(1) Models

Extending the results in Sargan (1976 Sargan , J. D. ( 1976 ). Econometric estimators and the Edgeworth approximation . Econometrica 44 : 421 – 448 .[Crossref], [Web of Science ®] , [Google Scholar]) and Tanaka (1984 Tanaka , K. ( 1984 ). An asymptotic expansion associated with the maximum likelihood estimators in ARMA models . J. Roy. Statist. Soc. B 46 : 58 – 67 . [Google Scholar]), we derive the asymptotic expansions of the distribution, the bias and the mean squared error of the MM and QML estimators of the first-order autocorrelation and the MA parameter for the MA(1) model. It turns out that the asymptotic properties of the estimators depend on whether the mean of the process is known or estimated. A comparison of the moment expansions, either in terms of bias or MSE, reveals that there is not uniform superiority of neither of the estimators, when the mean of the process is estimated. This is also confirmed by simulations. In the zero-mean case, and on theoretical grounds, the QMLEs are superior to the MM ones in both bias and MSE terms. We also discuss how the approximations are affected by moderate deviations from the unit root case. The results presented here are important for bias correction and increasing the efficiency of the estimators.     

Asymptotic properties of numbers of observations in random regions determined by central order statistics

In this paper, we extend the concept of near order statistic observation by considering observations that fall into a random region determined by a given order statistic and a Borel set. We study asymptotic properties of numbers of such observations as the sample size tends to infinity and the order statistic is a central one. We show that then proportions of these numbers converge in probability to some population probabilities. We also prove that these numbers can be centered and normalized to yield normal limit law. First, we derive results for one order statistic; next we give extensions to the multivariate case of two or more order statistics.     

用谱学方法研究铜在Fe(CN)_6~(3-)溶液中的腐蚀行为

用FT-IR、UV-Vis和XPS等分子光谱和电子能谱方法研究了铜在Fe(CN)_6~(3-)溶液中的腐蚀过程,表面膜的形成及其改性。结果表明,腐蚀膜主要由Cu_4~(1+)Fe~Ⅱ(CN)_6(大量)和Cu_2~(2+)Fe~Ⅱ(CN)_6(少量)组成,并夹杂有K_4Fe(CN)_6和K_3Fe(CN)_6。