基于XML技术的报业数字资产管理系统

详细介绍了基于XML技术的报业数字资产管理系统的设计与实现，重点阐明了使用文件存储管理系统的优势，以及在此基础上如何利用软件机制解决报业海量新闻数据源存储问题的方法，最后简要介绍了该系统对报业的意义。     

Study on arsenic level in public water supply of Delhi using hydride generator accessory coupled with atomic absorption spectrophotometer

Exposure to arsenic has been associated with several health hazards. Worldwide the main reason for chronic human intoxication with arsenic is intake of contaminated drinking water. Air acetylene type of atomic absorption spectrophotometer in combination with hydride generator accessory was used to analyze arsenic level in 25 water samples collected from 25 booster pumping stations and 313 water samples collected from tap water supply of 62 areas of Delhi. Results were analyzed using SPSS and Barlett’s Chi Square Test. Mean arsenic level detected in water samples collected from booster pumping stations was 0.00976 ppm (Range 0.000–0.017 ppm, Standard Deviation 0.006 and Standard error of Mean 0.00118). Maximum arsenic level (0.017 ppm) was found in water samples of booster pumping stations of Mehrauli, Punjabi Bagh and Ramjas Road. Mean arsenic level detected in samples collected from tap water supply was 0.013 ppm (Range 0–0.0430 ppm, Standard Deviation 0.00911 and Standard error of Mean 0.000515). In water samples of 42 areas arsenic level detected was exceeding WHO/EPA permissible limit of 0.01 ppm (10 ppb). The mean arsenic level detected in water samples of booster pumping station was within WHO/EPA permissible limit while mean arsenic level detected in tap water samples was marginally higher. Mixing of ground water and contamination through broken or leaking channel could be the possible reason of higher arsenic level in tap water. Continuous monitoring of quality of drinking water is required particularly in view of water contamination caused by industrial waste and uncontrolled ground water extraction.     

A tale of two literatures: Transaction costs and property rights in innovation outsourcing

This paper investigates the relative importance of property rights and transactions cost factors in driving the decision of firms to outsource innovation. Using data for over 8000 firms from the UK Community Innovation Survey, we find that property right factors dominate over transaction cost factors. Transaction cost variables are more important for process innovation, while property rights variables are more significant for firms involved in product innovation. In addition, we find that firms involved in process innovation have a higher probability of outsourcing innovation than firms involved in product innovation.     

分子伴侣与蛋白质折叠

新合成的多肽链必须先经折叠和装配后形成特定的三维结构才具有活性．在多肽链折叠过程中，往往会产生折叠异常蛋白，形成集聚体．分子伴侣可有效地调控多肽链的正确折叠，从而避免集聚体的形成．文章主要对分子伴侣的定义、作用、种类、特性等做一介绍。     

三维表面微观形貌的等高图绘制及粗糙度3-D评定参数计算方法研究

针对零件表面质量的要求愈来愈高，而机加工表面微观形貌的粗糙度3-D评定方法却相对滞后。针对这一问题，本文就三维表面微观形貌的等高图的绘制方法、粗糙度3-D评定参数的计算提出了一些具体编程实现方法。重点阐述了三维表面等高图的绘制方法、3-D支承率和液体滞留性能指数的计算方法。利用JB-4C测量仪，开发了粗糙度3-D评定参数计算系统，验证了该方法的可行性。     

赫斯特指数的分析与应用

基于重标极差(R／S)分析基础上的赫斯特指数(H)是用来描述和标度传统的有效市场假说(EMH)是否成立的一个指标，本文以我国深圳成分指数为研究对象，通过对深成指的赫斯特指数的研究，结果表明该股票指数遵循有偏的随机游走(分形布朗运动)而非传统的随机游走模式。     

Immune response to n-terminal and c-terminal deletion mutants of Aspergillus fumigatus major allergen ASP F 3

The ubiquitous fungus Aspergillus fumigatus causes allergic rhinitis, asthma, sinusitis and allergic bronchopulmonary aspergillosis. A number of major allergens from A. fumigatus are purified, but their structure-function role in the pathogenesis of disease is not known. Such information is essential for devising alternative therapy of fungal allergic diseases. In the present study, N-terminal and C-terminal deletion mutants ofAsp f 3 were constructed and their immunopathological responses studied in a mice model of allergy. Three mutants viz,Asp f 3 (aa 33–168), (aa 1–142), and (aa 23–142) were made by deleting certain amino acids from epitopic regions of full lengthAsp f 3, a major allergen of A. furnigatus. TheAsp f 3 and three mutated proteins were expressed in pET vector. The C-terminal deletion mutantAsp f 3 (aa 1–142) induced elevated IFN-γ but low levels of IL-4 by spleen cells. This mutant also showed significant downregulation of peripheral blood eosinophils and lung inflammation in immunized mice. The N-terminal deletion mutantAsp f 3 (aa 33–168) also exhibited an immuno-suppressive effect in terms of IgE production and induction of Th2 cytokine. The results indicate thatrAsp f 3 and its deletion mutants induced distinct immune-inflammatory responses in mice on challenge with these proteins. The non-IgE binding deletion mutants ofAsp f 3 (aa 1–142 and aa 33–168) could deviate Th2 immune response with a concomitant reduction in airway inflammation and infiltration of inflammatory cells.     

网络适应性改造对《中图法》未来发展的启示

The efforts made by OCLC researchers to enhance Dewey Decimal Classification (DDC) so as to adapt it to Web environment are described. From the experience of OCLC researchers, the author puts forward some proposals for the future development of Chinese Library Classification.     

电子商务中的电子协作

During the transformation from business electronization to Electronic Commerce,electronic collaboration is a core management technology.Based on the two electronic collaboration models inside and outside an enterprise,this paper analyzes the environment of electronic collaboration.The characters and functions of the supporting system are mentioned,too.     

新空间经济学:21世纪经济学研究的主题

本文采取历史与逻辑相结合的方法考察空间经济学的演变轨迹，从研究 起点看，从经济研究的效率导向原则必然引伸出资源配置的空间结构选择，这正是空间经济学或区域经济学的研究对象；从研究目标看，从区位导向的空间经济学必然转变为以利益导向新空间经济学，从而大大拓宽了空间经济学的内源结构及其所延伸的范畴；从实践过程看，由新空间经济学在探索中确立的标准范畴和组织形式必然转化为各国政府或国际组织所遵循的政策模式或行为规则，从而使空间经济学的标准理论在区域政策以及其管理方面找到了最为适宜的应用土壤。