论欧阳修的文体创新及其文学史意义

在中国散文发展历程中,始终伴随着“纯文学”与“杂文学”的对立与交融。欧阳修能会通诸文体,汲取“杂文学”的营养,对属于“纯文学”的散文进行改造,有助于中国“纯文学”与“杂文学”的相互补充,促进了中国散文的发展。     

Pure science and the problem of progress

How should we understand scientific progress? Kuhn famously discussed science as its own internally driven venture, structured by paradigms. He also famously had a problem describing progress in science, as problem-solving ability failed to provide a clear rubric across paradigm change—paradigm changes tossed out problems as well as solving them. I argue here that much of Kuhn’s inability to articulate a clear view of scientific progress stems from his focus on pure science and a neglect of applied science. I trace the history of the distinction between pure and applied science, showing how the distinction came about, the rhetorical uses to which the distinction has been put, and how pure science came to be both more valued by scientists and philosophers. I argue that the distinction between pure and applied science does not stand up to philosophical scrutiny, and that once we relinquish it, we can provide Kuhn with a clear sense of scientific progress. It is not one, though, that will ultimately prove acceptable. For that, societal evaluations of scientific work are needed.     

关于带参数n次代数方程具有—对纯虚根之充要条件的讨论

本文对 n(n≥2)次带参数的代数方程存在一对纯虚根的条件进行了讨论,并以7次方程为例说明了具有一对纯虚根,且剩余根均具负实部之充要条件的论证.     

DDS高稳高纯频谱频率源技术

本文简述了ＤＤＳ的工作原理及发展趋势，分析了ＤＤＳ的优缺点。极细微步长、极短的跳频时间是ＤＤＳ特有的品质；幅度量化及相位截取引入的杂散是ＤＤＳ固有的噪声。低相位噪声时钟信号及优良的电路技术是获得ＤＤＳ高纯频谱的关键。ＤＤＳ在雷达频率合成器，尤其是在相控阵雷达中，有广阔的应用前景。     

企业R＆D国际化的投影寻踪分类模型的建立及应用

首先建立了一个企业R＆D国际化的评价指标体系,然后对其建立投影寻踪分类模型（PPC）,利用基于实数编码的加速遗传算法（RAGA）对模型求解,最后对解进行分析和评价。     

纯棉牛仔布的前处理工艺

讨论纯棉牛仔布的前处理工艺过程及工艺条件。     

Embodied Odysseys: Relics of stories about journeys through past,present, and future

This paper argues that the heritage represented by a museum should be seen not just in its individual objects but also in the relationships between them. The Conservatoire Nationale des Arts et Métiers and the Science Museum in London, the earliest great European science museums, were deeply concerned with the relationship between science and practice. The foundation speeches of the Deutsches Museum emphasised the concern with both past and future. Such ancestry provided hard-to-escape templates within which collections were built up over the subsequent century and more. Thus the Science Museum’s biotechnology collection developed at the very end of the twentieth century and albeit based on detailed historical research reflects the same concerns with science–technology relations as could be seen in the 1876 Loan Exhibition which started off the Science Museum. The physical presence of such carefully-structured accumulations of objects could embody and reinforce the reality of such categories as pure and applied science.     

动力学光度法测定高纯碳酸锂中痕量铁

基于在稀氨水介质中,痕量铁可催化过氧化氢氧化碱性品红褪色的反应,建立了一种动力学光度法测定高纯碳酸锂中痕量铁的新方法,该方法线性范围为0-2ug/25mL,检出限为1.8×10-10g/mL.用于高纯碳酸锂中痕量铁的测定,获得令人满意的结果.     

颓丧与追求——茅盾《追求》青年叙事研究

茅盾的小说《追求》对国民革命失败后一批青年的时代苦闷与追求作了书写，悲观和颓丧是其基调，青年们一个个在追求，但一个个都失败了，凄绝之情弥漫纸上。青年们的苦闷是有时代政治背景的，与戴望舒的诗歌《雨巷》、胡也频的诗歌《欲雨的天色》、蒋光慈的小说《冲出云围的月亮》等具有互文性。革命阵营对《追求》的批评是以宣传革命的有效性为标准的，但这并不是衡量小说的可靠标准。《追求》反映了当时青年较普遍的苦闷，并真实地表达了作者的心声，这本身就是有价值的。《追求》的创作是有更具体背景的，《追求》的颓丧叙事有作者当时苦闷、颓丧心绪的投射。     

一种含椒盐噪声图像去噪的新方法

经典基追踪模型不适用于非高斯噪声环境下的图像去噪问题.基于不同的拟合误差项形式,提出一类新的基追踪扩展模型,并用于图像去噪.实验结果表明,本文方法在椒盐噪声环境下具有显著的去噪效果.