基于统计和机器学习的中文Web网页正文内容抽取

在搜索引擎中为了减小索引文件的大小、加快检索的速度和提高检索的精确度,必须对网页中的文本内容去噪并有效地抽取网页中的主题信息.根据对大量网页的特征分析,本文提出了一种较为简单和实用的网页主题信息抽取方法,该方法利用主题信息在网页中分布相对集中和文本密度较高的特征,利用BP人工神经网络进行自动识别,实验结果表明,该方法对于信息发布类网站平均准确率较高,具有一定的实用性.     

Empirical research on the different innovation engine between China and US manufacturing using an improved method

Most studies arrive at controversial conclusions about the relationship between firm size and technological innovation. Industrial differences and subjective model design are generally considered the primary cause. In static comparisons across industries, dynamic industrial changes are ignored, but this might lead to differing results when attempting to identify the driving forces of evolutionary change in an industrial environment. This study applies nonparametric regression methods with an expansive industry grouping to overcome the industry-difference interference and empirical model error, typifying traditional studies. First, a comparative analysis of the forces driving US and Chinese manufacturing is performed. Results indicate that US and Chinese manufacturing are in different industrial growth stages. Chinese manufacturing takes the traditional elements and R&D input as its main driving factors, which require objectively, expansive scale of enterprise, therefore showing characteristic Schumpeterian innovation. US manufacturing is driven by both R&D and non-R&D inputs; so it can maintain continuous innovation through cooperative networks under conditions of constant or contracting firm size.     

基于领域本体的元搜索引擎的研究

随着Internet的迅速发展,加速了人类进入信息社会的步伐,网络信息量迅猛膨胀,几乎每时每刻都在产生大量的信息,人们需要快速从海量的信息资源中查找到合适的信息,网络的搜索引擎便发展起来。但由于搜索技术的限制,查准率和查全率都不是很高。本文基于搜索引擎的现状,提出新的搜索引擎的模型,介绍了系统的工作原理,通过对系统的测试评估,该系统实现了对关键字的同义词和英文的扩展搜索,使搜索结果得到有效优化。     

船舶柴油机的排放污染与SCR技术研究

通过对船舶柴油机排放污染物及其危害介绍,并对其控制措施进行简要分析,提出了SCR技术,并阐述了SCR技术的工作原理及在船舶上的应用,为控制船舶柴油机的排放污染提供了一个较为有效的途径。     

The Application of Internet in Translation

Translation is an information activity which delivers the language cultural,abundant network resources provided convenience and ser-vice for translation.With the coming of network era.Internet plays an effective role in assisting.translation.It can not only help the translator to search related background materials,avoiding mistakes or inappropriate places,but also can help the translator to find out ready-made translated text directly on occasion.From a point of view of the language features,this paper discusses how the Internet is applied in translation,suggesting translators make full use of network service to lighten the burden of translation,enhance the speed and the quality of translation in translation business.     

Assessing the Visibility of Destination Marketing Organizations in Google: A Case Study of Convention and Visitor Bureau Websites in the United States

Search engines are playing an increasingly dominant role in providing access to tourism information on the Internet. As such, it is argued that destination marketing organizations (DMOs) must have a substantial understanding of the visibility in search engines in order to create competitive positions within this important marketplace. The goal of this study was to develop a process to assess the visibility of DMO websites in one of the major search engines (i.e., Google). A set of 18 cities in the United States were selected to be used as case studies of the visibility of their convention and visitor bureau (CVB) websites in relation to travel queries identified using Google Adwords Keyword Tool. The results indicate that there are substantial differences in the relative positions of CVB websites on Google. In particular, there seems to be huge gaps among the search domains within CVB websites in terms of their visibility to online travelers and volume of search within those domains. This study offers a number of implications for research and practice of search engine marketing for tourism destinations.     

浅谈高校计算机机房管理

随着计算机技术的飞速发展、信息量的急剧增加、计算机应用的日新月异，在全国的各大中专院校，计算机基础课已成为公共必修课。然而，在我国高校中普遍存在着计算机专业教师紧缺、教学任务繁重、教学研究时间紧张等现象，致使教学质量受到一定影响。如何合理地利用有限资源来更好地完成实验教学任务，是各高校亟须解决的问题。     

渐开线圆柱齿轮精度的新旧齿标转换方法

阐述了渐开线圆柱齿轮精度新旧齿标转换中以满足主机性能需要，保证齿轮产品质量原则的转换方法，提出了在转换中应注意的问题，并举例列出了此种方法在转换中的具体步骤。     

CRM在柴油机制造业的应用

文章阐述了客户关系管理系统(CRM)的基本理论,分析了柴油机制造业特点,实施CRM的总体构架及可带来的效益。     

丰田佳美3VZ-EFI电控发动机各传感器的检测

电控发动机传感器主要是用来控制发动机的喷油正时、喷油量、点火时刻以及其他的修正信号,传感器出现故障时影响发动机的正常运转。发动机出现故障时除了机械故障以外,大多数出现在发动机的传感器和控制电路方面,掌握传感器的检测对维修是非常必要的,为了使维修人员在维修过程中尽快找出故障,本文针对丰田3VZ—EFI发动机传感器的检测方法进行论述。