一种基于流量的Web社区挖掘方法

Web社区是由对于同一主题感兴趣的人或组织创作的Web页的集合。提出了一种比较严格的Web社区表示法，同时对社区内和社区外的节点进行约束，解决了以往社区定义边界模糊的问题。设计了与该定义对应的Web社区挖掘算法。算法充分考虑了Web图的性质，并在构造好的网络流上采用最大流／最小割算法，从而得到所要的社区。实验表明，该方法可以挖掘出较大而且有意义的社区。     

基于WEB2．0的开放式虚拟学习社区的构建探讨

本文主要分析了开放式虚拟学习社区的含义，介绍了Web2．0与传统Webl．0的主要区别，阐述了Web2．0应用到教育方面的主要优越性，并归纳了构建开放式虚拟学习社区的相关方法和模块，对Web2．0应用到开放式虚拟学习社区的各种工具进行了有益的探讨。     

在Internet上搜索Web网页信息的算法探讨

Web社区是Internet网上有着某种关联关系的Web页面的集合,本文概述这些Web社区理念及用于搜索这些Web社区的算法的特色与不足,同时简要介绍一个更柔性化的定义和发现Web社区的思路.     

论图书馆对Web2.0开放式虚拟学习社区的知识保障

本文通过对Web2．0开放式虚拟学习社区涵义和构建意义的阐述，说明了图书馆在知识共享和创新领域、知识管理和服务领域对Web2．0开放式虚拟学习社区的知识保障发挥的作用，并从构建知识平台、知识仓库和知识服务市场三大方面对知识保障的新功能进行了展望。     

支持动态服务组合的Web服务封装

针对如何将包含复杂操作的Web服务封装成Web服务社区和Web服务簇这一问题,提出一种基于Web服务日志,使用序列模式挖掘技术的Web服务封装方法.该方法对Web服务日志进行序列模式挖掘以获得业务功能服务序列,使用获得的序列将Web服务封装成业务功能服务,进而封装成服务社区和服务簇.使用该方法可以有效地将包含复杂操作的Web服务封装成支持动态服务组合的服务社区和服务簇.     

谈基于链接分析的web社区发现技术

Web社区是Web组织中非常重要的信息,如何这些发现社区,进而快速从网上找到更多关于某一主题的网页是Web数据资源挖掘领域的热点。本文详细介绍了4种基于链接分析的web社区发现技术,及其优缺点,并给出了web社区发现技术下一步的研究工作。     

面向服务的软件体系结构的研究及探索

Web Service采用了一种面向服务的开放的、松耦合的架构，所有协议基于XML，具有通用性且实现简单，给面向服务软件体系结构带来了新的契机。文章以社区医疗信息系统为例，探讨了基于Web services的面向服务软件体系结构的实现。     

I-Wander:一种面向非结构化对等网络的Web服务发现方法

针对非结构化对等网络,设计了一种称为I-Wander的Web服务发现方法.将具有相同功能属性的Web服务聚合成社区.查询包在社区间漫游,把漫游过的社区和节点存储起来,构成认识列表.认识列表被逐跳更新,并在查询包相遇时相互交换.查询包在匹配度最高的社区被大量复制扩散,据非功能属性选出最优服务,用于Web服务组合.实验结果表明,服务聚合和认识列表及其交换机制,节省了查询包的探测时间,提高了Web服务查找的效率.     

基于Web Services的Web GIS分布式系统体系结构

分析了传统Web GIS开发技术的特点，提出了基于Web Services的思想来构建分布式Web GIS系统，并采用相似搜索技术来发现Web服务。     

AJAX在Web中的异步交互应用

通过AJAX技术在社区系统的具体应用，阐明了AJAX技术在Web异步交互方面的优越性。在用户和服务器之间引入一个AJAX引擎，可以消除Web应用的开始一停止一开始一停止的交互过程．使用委托和门面模式相结合的复合模式，隐藏了服务器端逻辑的具体实现，降低了因页面直接访问服务器逻辑而引发安全问题的可能性．对基于AJAX模式下开发Web应用具有一定的实用价值．     

Exploration on ecological regulation of the reservoirs

Reservoir regulation process in the Yangtze River basin is mainly divided into two types of flood regulation and initiating benefit regulation. The present reservoir management system and operation mode are mainly for dealing with or coordinating of flood control and benefit initiation as well as benefit distribution among various beneficial functions. From the view point of river ecosystem protection, the current regulation mode has two kinds of problems ： firstly, most of the reservoir regulation plans do not consider ecosystem protection at downstream of dams and needs of environment protection in reservoir areas; secondly, integrated regulation or management of water resources is ignored. It is very necessary to improve reservoir regulation mode, bearing problems faced by regulation of the Three Gorges reservoir and issues related to cascade development and regulation in Tuojiang and Minjiang River basins in mind. In accordance with the concept of scientific development, and the philosophy of ＂ensuring a healthy Yangtze River and promoting the harmony between human and water＂, taking flood control, benefit initiation and eco-system as a whole, this paper put forward the basic consideration to improve reservoir regulation as follows ： on the basis of requirements of ecosystem protection at downstream of dams and needs of environment protection in reservoir areas, we should bring the functions of reservoir such as flood control and benefit initiation into full play, control the negative influence to the ecosystem at downstream of dams and the environment in reservoir areas in an endurable scope, and restore the ecosystem and the environment step by step. This paper put forward the relevant regulation process aiming at the idiographic problems such as protection of ecosystem at downstream of dams and environment in reservoir areas, protection of aquatic wildlife species and fish species, regulation of sediment and protection of wetland.     

Mycelial fermentation and medicinal properties of a valuable medicinal fungus Cordyceps sinensis Cs-HK1

Cordyceps sinensis （Cs） or Dongchongxiacao in Chinese is a rare and precious medicinal mushroom. In this work, a Tolypocladium sp. fungus named Cs-HK1 was isolated from a natural Cs fruiting body, and its ultraviolet （UV）, infrared （IR） and high-performance liquid chromatography （HPLC） spectra all exhibited high degrees of matching to those of natural Cs, indicating the similarity of chemical composition. A crude polysaccharide （PS） fraction isolated from Cs-HKI fungal mycelium showed significant antitumor activity, inhibiting melanoma tumor growth in mice. The PS-treated mice showed significantly higher serum interferon-y （IFN-y） level and higher proliferation rate of lymphocytes ex vivo than the control animals, suggestive of the immunomodulatory activity of the PS fraction. In cell cultures, the PS fraction caused a significant and dose-dependent inhibitory effect on the proliferation of two cancer cell lines, B16/neu mouse melanoma and MDA-MB-231 human breast cancer cells, but not on normal spleen lymphocytes in vitro. Most of these bioactivities of the Cs- HK1 fungus were comparable to or even greater than those of natural Cs. The results showed that Cs-HK1 fungus may be a functional substitute for the natural Cs in health food and herbal medicine.     

China’s bioenergy industry development roadmap

Positive development of renewable energy, saving and substitution of fossil energy, promotion of the energy structure adjustment are the inevitable strategy choices of China＇ s sustainable development. This paper discussed the China＇ s bioenergy resources status, development targets and technology development roadmaps. China has 136. 140 million hm^2 of marginal land, which distribute mainly in western and northern regions. There are 1 billion t of crop residues and forestry waste annually, and 300 million t can be used to produce different kinds of bioenergies. And organic waste and manure can generate 50 billion m3 of biogas. The discussed development target indicated that it can construct a biomass oilfield with the capacity of 100 million t/year and reduce 200 million t of CO2 emission by 2020. The bioenergy technology development roadmap indicated that the bioethanol mainly uses non grain starch and hemicellulose products as raw materials in the near-term （2006 -2010）. The biodiesel technology will focus on the advanced production technology, FT diesel, liquefaction of biomass and raw material production technology.     

Study on complexity of Sutong Bridge＇ s objectives system and its meta-synthesis management

Objectives define the boundaries of complex engineering system. It is a hard work to identify the specific objectives of a complex engineering system. The objectives system development needs a complicated process, from nix to prototype, and to final definition. The total process will cover the following course： from chaos to well-ordered; from qualitativeness to combination of quantitativeness and qualitativenss, then from qualitativeness to quantitativeness （ a recurrent process）, expert experience and theoretical science, rationality and sensibility, synthesis analysis and meta-synthesis, routinization and non-routinization. Such process is explicit in phase development yet overlapped ; mutually confined yet mutually independent ; permeated conflicts yet pregnant in harmony. This article explores the complexity of Sutong Bridge＇ s objectives development and the process of meta-synthesis in the Sutong Bridge engineering.     

Simulated change in the near-surface soil freeze/thaw cycle on the Tibetan Plateau from 1981 to 2010

The near-surface freeze/thaw cycle in cold regions plays a major role in the surface energy budget,hydrological activity,and terrestrial ecosystems.In this study,the Community Land Model,Version 4 and a suite of high-resolution atmospheric data were used to investigate the changes in the near-surface soil freeze/thaw cycle in response to the warming on the Tibetan Plateau from1981 to 2010.The in situ observations-based validation showed that,considering the cause of scale mismatch in the comparison,the simulated soil temperature,freeze start and end dates,and freeze duration at the near-surface were reasonable.In response to the warming of the Tibetan Plateau at a rate of approximately 0.44°C decade-1,the freeze start-date became delayed at an area-mean rate of1.7 days decade-1,while the freeze end-date became advanced at an area-mean rate of 4.7 days decade-1.The delaying of the freeze start-date,which was combined with the advancing of the freeze end-date,resulted in a statistically significant shortening trend with respect to the freeze duration,at an area-mean rate of 6.4 days decade-1.Such changes would strongly affect the surface energy flux,hydrological processes,and vegetation dynamics.We also found that the rate of freeze-duration shortening at the near-surface soil layer was approximately 3.0 days decade-1lower than that at a depth of 1 m.This implied that the changes in soil freeze/thaw cycles at the near surface cannot be assumed to reflect the situation in deeper soil layers.The significant correlations between freeze duration and air temperature indicated that the shortening of the near-surface freeze duration was caused by the rise in air temperature,which occurred especially in spring,followed by autumn.These results can be used to reveal the laws governing the response of the near-surface freeze/thaw cycle to climate change and indicate related changes in permafrost.     

Building mechanism exploration of new deepwater terminal in Hengsha

To promote the construction of Shanghai international shipping center, the planneu new acepwatcr terminal construction in Hengsha pushes forward the innovation and breakthroughs of the existing port manage- ment system and building mechanisms. Through reviewing, analyzing, comparing and summarizing the suc- cessful experience of the major ports at home and abroad, market-oriented recommendations will be proposed in terms of effectiveness and feasibility, as well as the idea of＂Shanghai Freeport＂.     

CH4 retrieval from hyperspectral satellite measurements in short-wave infrared: sensitivity study and preliminary test with GOSAT data

One of the important science requirements of monitoring atmospheric methane abundances from hyperspectral measurements is to establish a highly accurate retrieval algorithm.This paper aimed to describe a retrieval algorithm based on a series of sensitivity study with an effective and accurate forward model,which was applied to realize online calculation of absorption coefficient and backscattered solar radiance.The sensitivity study consisted of band selection,interference factors analysis,and retrieval model construction.The band selection analysis indicated that the 1.65 lm band(5,900–6,150 cm-1)associated with the 2.06 lm band(4,800–4,900 cm-1)retained more than 90%of the information content of CH4,CO2,and temperature,and more than 85%of that of H2O in the retrieval.Investigation of the interference factors showed that H2O,temperature,and CO2will cause unacceptable errors if they are not revised.This also showed that revising temperature and H2O with a profile model is more efficient than with a temperature offset and a H2O scale factor model.A preliminarily test using the Greenhouse gases Observing SATellite Level 1B spectral data indicated that most of the retrieval errors were less than 1%,which is acceptable for methane flux estimation.     

Inactivation of Giardia by Ozone and Its Disinfect Mechanisms

This study was to investigate the effect of ozone(O3)inactivation on Giardia in water by the fluorescence staining method.In order to elucidate the dominant mechanisms of inactivation,cell surface or inner cell components damage were comparatively examined by scanning electron microscopy(SEM).Results suggested that O3had a stronger effect on inactivating capability.Firstly,when the concentration of O3was above 2.0 mg/L and the contact time was up to 5 min,it showed a significant inactivating effect.Secondly,the effect of turbidity on inactivation was also found to be significant in synthetic water;when turbidity increased,the inactivating effect decreased.Thirdly,the inactivating rates were improved with a temperature increase from 5 to 25℃,but decreased when the temperature were out of this range.The inactivating capability of O3was stronger under acidic conditions than alkalic conditions.Lastly,when the concentration of organic matter in the reactive system was increased,probably due to the competition between Giardia and organics on O3,the inactivating rate was decreased;in addition,the cellular morphology of Giardia varied with different contact times.At contact time of 30 s,cells were rotundity and sphericity;at 60 s they became folded,underwent emboly,and burst;and at 240 s,the cell membrane of Giardia shrinked and collapsed completely.     

Fabrication Research and Property of Enhanced Petaling Cold Cathode with Carbon Nanotube

With high effective screen-printing technique, a new triode field emission display (FED)with enhanced petaling cold cathode was fabricated. For enhancing the field emission performance,a series of improved measures was adopted in the fabrication course. Seen from the fabrication structure of enhanced petaling cold cathode,the bar conducting electrode and the petaling bottom electrode were fabricated with the sintered silver slurry on cathode glass faceplate. The luminescence image with green phosphor was displayed for the sealed enhanced petaling cold cathode FED. The measured results showed that the enhanced petaling cold cathode had good field emission performance. The enhanced petaling cold cathode FED possessed low turn-on electric-field of 1. 95 V /μm,large emission current of 1 389. 6 μA,and high luminance brightness of 1 520 cd /m2 .     

Discussion on the new space of strategic development and function of Hengsha,Shanghai

Integrating various resource advantages including location, land, coastline and waterway, Heng- sha, Shanghai will be the new space of strategic development in the future （especially after 2020）. Inspired by marine economic development and continual establishment for new strategic space of coastal cities, in this pa- per we will take the strategic development direction of Hengsha new space into consideration when enlarging on the positioning of the new development space in Hengsha, which includes international logistic center （free har- bor and logistic transshipment center）, modem port industry, high-end services, tourism, leisure, and recre- ation and ecological village in downtown area.