基于Jetspeed的企业信息门户研究与实现

随着Internet/Intranet技术的迅速发展,通过统一的Web界面,提供企业的信息、业务、组织结构以及相应授权的统一入口是企业信息化建设的大趋势。以Jetspeed作为企业信息门户的实现技术,在介绍Jetspeed的体系结构和Turbine框架的基础上,详细讨论了Jetspeed中Portlet的开发与部署。     

基于Portlet的网格Portal的介绍与应用

网格 Portal 即网格门户，利用主流的Web 技术提供Web界面，方便用户使用并提供网格管理的功能和服务。新一代基于Portlet虚拟组件的网格Portal显著降低了网格Portal的开发难度和成本，实现了不同Portal组件之间的高度兼容和互换，已经成为了新一代网格 Portal 的主流技术。本文在介绍基于Portlet的网格Portal的发展情况和设计技术的基础上，探讨了羊八井宇宙线观测实验的网格Portal 的功能与设计。     

通用网格门户构件的设计和实现

本文在对网格门户架构及组成分析的基础上,提出了一个通用网格门户构件,并利用网格中间件和Portlet接口进行构件的设计与实现。通用网格门户构件采用分层架构,网格中间件是构件的业务逻辑层,负责网格门户的业务逻辑的实现;Portlet接口是构件的表示层,负责网格门户的Web接口;为了减小网格中间件的升级带来的影响,在中间件的基础上建立了一个网格应用服务层。同时,按照网格门户所提供的功能将通用网格门户构件分为网格安全、信息服务、作业管理、以及文件管理四个核心模块。使用通用网格门户构件开发网格门户能够有效的降低开发难度、缩短开发周期。     

RSS技术及其在图书馆信息服务中的应用

介绍了RSS技术及其特点，阐述了图书馆应用RSS技术在信息推送、信息资源开发、信息资源聚合、信息资源过滤和积累等方面能为用户提供多样化、方便快捷的信息服务。RSS技术的应用为图书馆提供了新的服务手段和新的服务项目，提升了图书馆信息服务能力，为用户获取信息提供了多方面的选择。     

基于RSS技术的个性化信息服务的实现

概述了RSS技术的概念和特点,分析RSS技术的系统组成和实现方式,介绍了基于RSS技术的个性化信息服务。     

基于RSS的数字图书馆个性化信息推送服务

在分析RSS含义和特点的基础上,探讨RSS在图书馆个性化信息推送服务中应用的实现。详细分析了基于RSS的图书馆个性化信息推送服务的工作原理,最后,结合JSP和Oracle等技术,并详细论述了系统实现的开发过程。     

RSS技术与信息媒体聚合

阐述了RSS及其相关的基本概念,回顾RSS的发展,分析其优势;介绍了RSS的基本工作模式和相关规范标准,分析了RSS技术实现信息推送模式、RSS消息结构以及常见的RSS客户端工具;展望了RSS的在电子商务、传媒、教育等领域的应用前景。     

RSS信息聚合技术在高校图书馆工作中的应用

本文首先介绍了RSS技术的发展历史和现状，详细探讨了基于RSS技术的新的信息查找模式与以往模式的异同，并探讨了RSS技术在高校图书馆工作中应用前景，最后笔者介绍了RSS上海大学图书馆的应用。     

基于RSS的高校图书馆个性化信息推送服务及实现

介绍了RSS技术,结合高校图书馆的用户特点,分析了基于RSS的高校图书馆个性化信息推送服务的工作流程及实现要求。     

基于RSS的图书馆信息推送服务研究

文章在论述RSS对图书馆信息服务意义的基础上,详细介绍了RSS在图书馆信息服务应用中的内容,并对其实现提出了几点建议。     

Computing semantic similarity based on novel models of semantic representation using Wikipedia

Computing Semantic Similarity (SS) between concepts is one of the most critical issues in many domains such as Natural Language Processing and Artificial Intelligence. Over the years, several SS measurement methods have been proposed by exploiting different knowledge resources. Wikipedia provides a large domain-independent encyclopedic repository and a semantic network for computing SS between concepts. Traditional feature-based measures rely on linear combinations of different properties with two main limitations, the insufficient information and the loss of semantic information. In this paper, we propose several hybrid SS measurement approaches by using the Information Content (IC) and features of concepts, which avoid the limitations introduced above. Considering integrating discrete properties into one component, we present two models of semantic representation, called CORM and CARM. Then, we compute SS based on these models and take the IC of categories as a supplement of SS measurement. The evaluation, based on several widely used benchmarks and a benchmark developed by ourselves, sustains the intuitions with respect to human judgments. In summary, our approaches are more efficient in determining SS between concepts and have a better human correlation than previous methods such as Word2Vec and NASARI.     

预曝气＋缺氧/二级生物接触氧化法处理食品废水

介绍用预曝气＋缺氧/二级生物接触氧化法（A/BCO）处理食品废水工程实例。生物接触氧化池采用城市污水处理厂活性污泥接种,水温20～25℃的条件下,培养驯化一个月左右。COD、SS、BOD5和NH3-N的去除率分别为94%、94%、94%和78%,出水可达一级排放标准,过滤消毒后的出水达到城市杂用水水质标准。     

CSI在社会保障主观评价中的应用

论文论证了对社会保障体系进行主观评价的必要性,并将CSI模型引入对社会保障对象的主观满意度测评;分析了社会保障领域CSI测评的特点,界定了调查的对象范围;对CSI模型中隐变量的涵义加以界定,对其相应的测量变量（问卷问题）进行了设计;论文最后对社会保障CSI测评调查方案的设计进行了初步的探讨。     

Co-production of hydrogen and ethanol by Escherichia coli SS1 and its recombinant

BackgroundThe development of a potential single culture that can co-produce hydrogen and ethanol is beneficial for industrial application. Strain improvement via molecular approach was proposed on hydrogen and ethanol co-producing bacterium, Escherichia coli SS1. Thus, the effect of additional copy of native hydrogenase gene hybC on hydrogen and ethanol co-production by E. coli SS1 was investigated.ResultsBoth E. coli SS1 and the recombinant hybC were subjected to fermentation using 10 g/L of glycerol at initial pH 7.5. Recombinant hybC had about 2-fold higher cell growth, 5.2-fold higher glycerol consumption rate and 3-fold higher ethanol productivity in comparison to wild-type SS1. Nevertheless, wild-type SS1 reported hydrogen yield of 0.57 mol/mol glycerol and ethanol yield of 0.88 mol/mol glycerol, which were 4- and 1.4-fold higher in comparison to recombinant hybC. Glucose fermentation was also conducted for comparison study. The performance of wild-type SS1 and recombinant hybC showed relatively similar results during glucose fermentation. Additional copy of hybC gene could manipulate the glycerol metabolic pathway of E. coli SS1 under slightly alkaline condition.ConclusionsHybC could improve glycerol consumption rate and ethanol productivity of E. coli despite lower hydrogen and ethanol yields. Higher glycerol consumption rate of recombinant hybC could be an advantage for bioconversion of glycerol into biofuels. This study could serve as a useful guidance for dissecting the role of hydrogenase in glycerol metabolism and future development of effective strain for biofuels production.     

Improvement of hydrogen yield of ethanol-producing Escherichia coli recombinants in acidic conditions

BackgroundAn effective single culture with high glycerol consumption and hydrogen and ethanol coproduction yield is still in demand. A locally isolated glycerol-consuming Escherichia coli SS1 was found to produce lower hydrogen levels under optimized ethanol production conditions. Molecular approach was proposed to improve the hydrogen yield of E. coli SS1 while maintaining the ethanol yield, particularly in acidic conditions. Therefore, the effect of an additional copy of the native hydrogenase gene hycE and recombinant clostridial hydrogenase gene hydA on hydrogen production by E. coli SS1 at low pH was investigated.ResultsRecombinant E. coli with an additional copy of hycE or clostridial hydA was used for fermentation using 10 g/L (108.7 mmol/L) of glycerol with an initial pH of 5.8. The recombinant E. coli with hycE and recombinant E. coli with hydA showed 41% and 20% higher hydrogen yield than wild-type SS1 (0.46 ± 0.01 mol/mol glycerol), respectively. The ethanol yield of recombinant E. coli with hycE (0.50 ± 0.02 mol/mol glycerol) was approximately 30% lower than that of wild-type SS1, whereas the ethanol yield of recombinant E. coli with hydA (0.68 ± 0.09 mol/mol glycerol) was comparable to that of wild-type SS1.ConclusionsInsertion of either hycE or hydA can improve the hydrogen yield with an initial pH of 5.8. The recombinant E. coli with hydA could retain ethanol yield despite high hydrogen production, suggesting that clostridial hydA has an advantage over the hycE gene in hydrogen and ethanol coproduction under acidic conditions. This study could serve as a useful guidance for the future development of an effective strain coproducing hydrogen and ethanol.     

华莱士与达尔文的分歧

华莱士与达尔文在性别二态性、杂交与杂种不育及人类的起源问题上存有分歧：达尔文采取多元论,在自然选择学说中引入性选择与相关律的解释,华莱士则坚持适应主义的自然选择一元论,但在人类进化问题上引入了唯灵论的超自然解释。分歧反映出达尔文主义在“非达尔文革命”中的困境：遗传学的不足与进步主义的盛行使神学进化论与科学进化论妥协的可能依然存在。,     

城市垃圾与污水污泥能源化处置方案对比——基于两种生命周期影响评价方法

城市生活垃圾和污水污泥是重要的城市固体废弃物,对环境质量和人体健康均造成重要影响。由于组成中可燃物比例高,对它们的能源化处置研究成为热点。本文系统应用了一种可持续的环境管理工具——生命周期评价软件Simapro,采用Impact 2002+和ReCiPe Endpoint 2016两种生命周期影响评价方法测算了垃圾和污水污泥单独焚烧的线性加和与垃圾、污水污泥混合焚烧两种处置方案的生命周期环境影响,揭示不同处置方案下的环境负荷,探究两种处置方案的优劣;同时,分析这两种生命周期影响评价方法的不确定性。研究结果表明：①城市生活垃圾和污水污泥的混合燃烧方案在化石能源消耗、气候变化和人体健康方面的有益影响均明显高于单独燃烧方案,混合燃烧方案不仅缓解能源压力,同时降低气候和健康压力;②对于本文方案,Impact 2002+方法的中间点影响类别和终点损害类别评价结果都比ReCiPe Endpoint 2016方法更能突出混合燃烧方案的环境影响优势,但ReCiPe Endpoint 2016方法的不确定性更小。上述结论可为垃圾和污水污泥能源化的全生命周期环境影响评价方法的选取提供参考和依据。     

老挝知识产权保护研究

随着老挝成为PCT条约缔约国以及WTO成员国,老挝知识产权工作越来越受到政府重视,本文浅述了老挝的知识产权保护工作,并对老挝知识产权法律制度的发展、老挝知识产权工作现状、老挝专利与商标保护等进行了研究,并重点对老挝专利制度与中国专利制度进行了比较研究,以期为未来中老两国在知识产权领域的研究与合作提供参考依据。     

基于R/S分析的GMDH自组织方法在用电量预测中的应用

将R/S分析方法引入用电量预测;并将R/S定性分析方法与GMDH定量预测方法结合,应用于成都市用电量预测。应用R/S分析方法从定性角度研究成都市历年用电量变化趋势的特性,得出成都市城市用电量Hurst指数;运用GMDH预测方法从定量角度对成都市近几年的城市用电量进行预测,进而验证Hurst指数所反映出的成都市用电量的增长趋势。