科创中国

分析商务网站信息生态位的内涵,构造以能力维度、资源维度、关系维度、时间维度和空间维度为主的商务网站信息生态位5维模型,并设计出各生态位维度的指标体系,最后以此指标体系为基础设计出商务网站信息生态位的测度方法.

明确电子商务信息生态群的定义,认为电子商务系统由领导信息生态群、核心信息生态群和支持信息生态群构成,分析每个信息生态群的知识流程.电子商务知识管理对象是编码知识和个人知识,各知识流程中的核心环节是信息分析或经验提炼,分别对应于编码知识和个人知识.在知识流程分析基础上,提出信息生态视角下电子商务知识管理的技术框架.

Three dimensional(3D)displacements,which can be translated further into 3D strain,are key parameters for design,manufacturing and quality control.Using different optical setups,phase-shift methods,and algorithms,several different 3D electronic speckle pattern interferometry(ESPI)systems for displacement and strain measurements have been achieved and commercialized.This paper provides a review of the recent developments in ESPI systems for 3D displacement and strain measurement.After an overview of the fundamentals of ESPI theory,temporal phase-shift,and spatial phase-shift techniques,3D deformation measurements by the temporal phase-shift ESPI system,which is suited well for static measurement,and by the spatial phase-shift ESPI system,which is particularly useful for dynamic measurement,are discussed.For each method,the basic theory,a brief derivation and different optical layouts are presented.The state of art application,potential and limitation of the ESPI systems are shown and demonstrated.

通过对国内96个大学图书馆博客网站的网络调查,从建站单位、建站时间、单位属性、博文数量及访问量、主题内容、建站平台等6个方面,对国内大学图书馆利用博客提供服务的现状进行全方位的分析和研究,得出4点结论:①国内大学图书馆的博客服务只在部分图书馆进入成熟应用阶段,而在大多数图书馆还处于初期尝试阶段;②学科馆员博客是目前国内大学图书馆提供博客服务的首选形式;③读者协会博客的活跃表现显示出大学图书馆在新的网络环境下的广阔前景;④以免费公共平台托管方式建站是国内大学图书馆最常见的博客建站方式:

信息期望是用户依据其经验和知识,在信息获取和利用之前、之中对信息系统功能、信息服务水平和信息产品价值属性等所确立的一种主观预期与主观判断.通过对213名网络用户进行问卷调查,发现网络用户信息期望由信息表达与服务、信息获取过程、信息内容三个维度16个指标所构成.了解与把握网络用户信息期望构成,据此来优化网络信息资源建设、信息服务和网络建设,将有助于提升用户信息体验与满意度.

生态景观建设是南水北调东线江苏段工程重要组成部分.在建筑与环境景观设计的前期规划及组织实施过程中,均考虑建立合理有效的环境分区体系,同时也将工程的供水功能、生态功能以及环境效应有机结合.通过建筑与环境专项设计过程的实践,提出整体、综合设计的模式的设计思路,从而实现水与自然、水与社会和谐的目标.

2011年8月31日,最高法院对外公布的《关于审理政府信息公开行政案件若干问题的规定》是最高法院对于政府信息公开的"二次立法",它对机关档案室档案信息的公开进行了司法解释,这对档案信息公开的司法救济意义重大.然而,信息公开司法解释对于申请用途举证责任的说明、与《档案法》衔接错位等情况仍然表明,档案信息公开诉讼困境的真正解决,还任重而道远.

Insect source-sink dynamics are vital to ecologically intensive pest management. Maintaining sink plant hosts,or "trap crops",and destroying alternate hosts or breeding places adjacent to the field crop are effective pest management strategies for some arthropods. However,determining whether a host acts as a source or a sink is challenging, especially when the pest species is highly mobile and polyphagous. The western tarnished plant bug,Lygus hesperus,is highly polyphagous,and can utilize >300 hosts. Its presence has been documented in 26 roadside weed hosts in the Texas High Plains.Previous studies demonstrated that L. hesperus prefer alfalfa over cotton and several alternate weed hosts.A four-year project involved surveying and sampling for L. hesperus in the agricultural landscapes of several sub-regions of the southwestern United States,including the Texas High Plains. In Texas,geographic information of the landscape vegetation complex was compiled from a 150 km radius in the Texas High Plains. In one study,fifty irrigated cotton fields representing the crop diversity within this region were sampled via sweep-net for 10 weeks. This effort also included sampling of up to six noncotton insect habitats within a 3 km radius of each field. Seasonal average L. hesperus abundance data were regressed with 27 field characteristics( variables),including habitat-specific land cover,distance between focal cotton fields and non-cotton habitats,longitude,latitude,elevation,habitat heterogeneity index,and several environmental / ecological variables. Significant variables were selected using a stepwise regression at 15% probability rate. A 10-parameter linear model explained 93% of the variation in the data. Major parameters contributing significantly to variation in L. hesperus abundance in cotton were corn and sunflower acreages,focal cotton field distances from several non-cotton hosts,and habitat heterogeneity index. In addition,field marking-and-capture studies were conducted using protein markers and enzyme-linked immunosorbent assays to characterize L. hesperus intercrop movement behavior. The field marking-and-capture approach can be used to study the effects of various crop management practices on L. hesperus intercrop movement and can potentially be applied to other pests and cropping systems.

对医学图像进行去噪、增强可提高信息的利用率.传统的小波增强算法应用于医学图像时处理效果一般,针对该问题提出了一种基于二进小波变换的图像增强算法.首先,对图像进行多级小波分解,得到低频信息(尺度系数)和多个层次的高频信息(小波系数);然后,对图像的高频信息采用双闽值增强函数进行处理,同时,对图像的低频信息采用单阈值增强函数进行处理;最后,利用得到的低频信息和高频信息进行小波反变换.实验表明,该方法无论是增强效果还是抗噪性能都明显优于传统的图像增强算法,同时对医学图像具有较好的处理效果.