高等院校档案网络化管理的研究与应用

随着我国高等教育的迅速发展，高校规模的不断扩大，高校档案管理的网络化、信息化、智能化成为发展的趋势，如何进行高校档案管理成为各高校迫切需要解决的问题。本文从高校档案管理的现状着手，分析了网络化管理的必要性，对网络化管理模式的可行性进行了论证，并对高校档案网络化管理中可能出现的问题提出应对措施，为高校档案网络化管理模式的实施提供了借鉴。     

战略联盟:我国高校可持续发展的有效途径

近年来,高等教育内外部环境发生着深刻的变化,高校面临一系列新挑战。高等教育要以可持续发展为目标,高校战略联盟是高校持续发展的有效途径,通过高校战略联盟实现资源共享、风险共担、相互促进、共同发展的合作机制,进而有效提高我国高校的核心竞争能力。     

Low-Temperature Selective Catalytic Reduction of NO with NH<Subscript>3</Subscript> over Fe–Ce–O<Subscript><Emphasis Type="Italic">x</Emphasis></Subscript> Catalysts

In this study, we used a simple impregnation method to prepare Fe–Ce–O _x catalysts and tested them regarding their low-temperature (200–300 °C) selective catalytic reduction (SCR) of NO using NH₃. We investigated the effects of Fe/Ce molar ratio, the gas hourly space velocity (GHSV), the stability and SO₂/H₂O resistance of the catalysts. The results showed that the FeCe(1:6)O _x (Ce/Fe molar ratio is 1:6) catalyst, which has some ordered parallel channels, exhibited good SCR performance. The FeCe(1:6)O _x catalyst had the highest NO conversion with an activity of 94–99% at temperatures between 200 and 300 °C at a space velocity of 28,800 h^?1. The NO conversion for the FeCe(1:6)O _x catalyst also reached 80–98% between 200 and 300 °C at a space velocity of 204,000 h^?1. In addition, the FeCe(1:6)O _x catalyst demonstrated good stability in a 10-h SCR reaction at 200–300 °C. Even in the presence of SO₂ and H₂O, the FeCe(1:6)O _x catalyst exhibited good SCR performance.     

双平衡模拟乘法器在广播电视接收机中的应用

本文分析了双平衡模拟乘法器的原理,并讨论其在广播电视接收机中的一些应用.     

对弱势群体精神世界的解读--评中篇小说《乡徙》

《乡徙》中女主人公由一个把生存需要看成人生第一要义的人，由一个丧失了自主性与自觉性的“异化”的人，成长为追求自我价值实现的人，具有精神独立性的、努力进行自我拯救的人，作品的这种展示无疑具有现实意义。但是作品在对这一新的社会弱势群体的精神剖析上存在着价值判断的偏差，仿佛下岗不是对人以往拥有的各种社会权力的无情剥夺，而是救赎、启蒙精神氓众的治世良方，因此不能不说作者对弱势群体精神世界的如此解读是遗憾的。     

怎样由遍历序列确定二叉树

在文 [1 ]至文 [4]中都介绍了遍历一棵二叉树的三种方法 :先序遍历、中序遍历和后序遍历 .每棵二叉树的先序遍历序列、中序遍历序列和后序遍历序列都是唯一的 .但是不同的二叉树的先序遍历序列或中序遍历序列或后序遍历序列有可能是相同的 .就如我们已知一个关系要求能求出它的关系矩阵 ,已知一个关系的关系矩阵也能求出关系矩阵所表示的关系一样 ,要求我们不但能从二叉树求它的遍序序列 ,而且能从二叉树的遍历序列求出它们所表示的二叉树 .在文 [1 ]中只指出 :给定结点的先序序列和中序序列可唯一确定一棵二叉树 .但文 [1 ]没有给出证明 .本文指出了由后序遍历序列和中序遍历序列也可唯一确定一棵二叉树 ,并给出了相应的证明     

程度副词修饰名词结构探析

程度副词修饰名词原本不是一个被语法学界完全认可的语法组合,然而在当代口语及书面语中,“程度副词 名词”组合却有越来越多的人使用。可见,“程度副词 名词”虽是一类很特殊的结构,但已具有相当程度的可接受性。与一般意义上的名词不同,进入这一结构中的名词需具有由具体指称向情状描述转化的潜在语义特征,这一类名词与程度副词的组合弥补了形容词语义表达上的问题,并由此引发了部分名词向名形兼类词的转变。     

EFL teachers’ perceptions of English language policy at the elementary level in Taiwan

Due in large part to the trends towards economic globalization, English has become the most widely disseminated and ubiquitous international language. The purpose of the study was to investigate what Taiwan’s EFL teachers at the elementary level believe about the policy of English as a compulsory subject and how they perceive the benefits and obstacles of the policy’s implementation. Ten elementary English teachers in Tainan City and its suburban areas participated in this study. Data were collected through teachers’ interviews, classroom observation and document analysis. Results found that all ten teachers agreed with the policy for English as a compulsory subject at the elementary level. They observed both positive and negative sides of this top‐down policy. Classroom observation and interview data revealed that EFL teachers had to plan their English classes with the constraints on a large class of students with mixed levels of proficiency, limited teaching hours and resources. Parents’ expectations of and attitudes towards English learning also became an obstacle.     

有机化合物的水解反应及研究进展

该文对有机化合物的水解反应机理、应用及研究进展进行综述。     

Improving the precision of the keyword-matching pornographic text filtering method using a hybrid model

With the flooding of pornographic information on the Internet, how to keep people away from that offensive information is becoming one of the most important research areas in network information security. Some applications which can block or filter such information are used. Approaches in those systems can be roughly classified into two kinds:metadata based and content based. With the development of distributed technologies, content based filtering technologies will play a more and more important role in filtering systems. Keyword matching is a content based method used widely in harmful text filtering. Experiments to evaluate the recall and precision of the method showed that the precision of the method is not satisfactory, though the recall of the method is rather high. According to the results, a new pornographic text filtering model based on reconfirming is put forward. Experiments showed that the model is practical, has less loss of recall than the single keyword matching method, and has higher precision.