基于EPS工作平台制作DLG数据的方法

以制作辽宁省1∶10 000 DLG数据为例,简要地陈述了采用EPS制作DLG数据的基本方法,总结了利用EPS制作DLG数据的特点,较全面地阐述了EPS制作DLG数据从制作原理到编辑、入库完成图库一体化的全过程。通过实践应用,EPS系统有效克服了传统制图工艺的缺陷,能够快速、高效地完成辽宁省1∶10 000 DLG数据制作,大大提高了生产效率和质量。     

基于基础地理信息数据库的标准地形图快速生产技术研究

介绍了基础地理信息数据生产过程中,依托数据库成果快速生产标准地形图数据的技术研究,通过EPS平台中符号库的合理设置辅助自动化处理功能的开发,快速生产标准地形图的技术方法。     

基于EPS实现出图入库一体化的关键技术研究

随着我国地理信息建库与数字化成图建设的快速发展,出图入库一体化生产是目前测绘行业的迫切需求。EPS地理信息工作站为用户提供了完全开放的模板以及VBS二次开发接口,本文以合肥宅基地土地确权项目为例,详细叙述了依据该项目生产标准的模板定制过程,并编写脚本实现了出图入库数据的一体化输出。     

基于EPS下的1∶10000图的图库一体化成图

1∶10 000比例尺的局基本任务已由图面入库两套数据资料发展成为图库一体化的数据资料。在方便作业的同时,更加方便资料的储存及查询等工作。文章主要对于EPS平台下1∶10 000图的数据编辑、数据入库工作以及数据质检工作进行简单论述。     

Stress-Strain Behavior of Light-Weighted Soils

Unconfined and triaxial compression tests were carried out to examine the behavior of light-weighted soils (LWS) consisting of expanded polystyrene (EPS), dredged soils, and cement with respect to initial water content. The stress-strain behavior of LWS are analyzed with varying initial water content and silt contents of dredged soils, cement ratio, and confined stress. As initial water contents increase, the compressibility index increases and the preconsolidation pressure was vice versa. As initial water contents increase, the slope of stress-strain curve in elastic zone increases and strain rate at failure decreases and the strain rate at failure was not changed by the being of foams. As initial water contents increase, a compressive strength of LWS decreases. The decrement ratio of compressive strength of LWS with foams increases as cement content increases and initial water contents decreases. The compressive strength increases as silt contents increases.     

泡沫塑料颗粒种类对轻质混合土力学特性的影响

轻质混合土是一种新型的轻质土工材料,具有轻质、环保、高强等特点。本文对添加不同种类泡沫塑料颗粒的轻质混合土试样进行了无侧限抗压强度试验、等向压缩试验及三轴剪切试验。试验结果表明:泡沫塑料颗粒种类对轻质混合试样的力学特性有较大的影响。     

轻质土密度、强度与材料组成的关系研究

论述了轻质土试样的制备方法,对轻质土密度、无侧限抗压强度与材料组成之间的关系进行的研究表明：密度主要受到EPS颗粒添加量的影响;无侧限抗压强度主要受到水泥添加量、EPS颗粒添加量的影响。在此基础上给出了适合于工程应用的轻质土的配方公式。     

Simulation of the impacts of diagenesis or low-grade metamorphism on neutrophilic microaerobic Fe(II)-oxidizing biofilm

The microaerobic iron-oxidizing bacteria in circumneutral environment produce extracellular polymeric substances(EPS)with unique morphologic features,such as stalks or sheaths,which can be regarded as geobiological signatures.The Archean and early Palaeoproterozoic oceans were anoxic with high soluble Fe(II)that were suggested to have been oxidized through the metabolism of Fe(II)-oxidizing bacteria.The precursor of the ultrafine hematite in banded iron formation(BIF),e.g.,ferrihydrite,was suggested to be the mineral record of microbial Fe(II)-oxidation at that time.However,both the biological materials and primary iron minerals were prone to being altered by diagenetic or low-grade metamorphic processes.This makes it difficult to interpret the genesis of Precambrian BIFs.Here,we report experimental simulation on the effects of diagenesis or low-grade metamorphism on neutrophilic microaerobic Fe(II)-oxidizing bacteria and their biomass.Stalks,sheaths,and iron oxide spheroidal aggregates are partially preserved after the 100 MPa/300°C treatments,which indicates the mixed organic matters and iron oxides could survive the diagenetic or low-grade metamorphic processes.Some organic-mineral mixing structures carry information on microbial processes,though they appear similar to pseudomorphs of fossilized bacteria.     

基于EPS的城市勘测院信息化测绘体系建设研究

21世纪测绘部门逐步进入信息化测绘阶段,本文分析了测绘产品更新滞后、更新不及时的现状,提出了基于EPS生产办公信息化系统实现基础地理数据生产、动态更新入库流程化,强化生产流程信息化,扩展报表统计功能,并增加测绘生产办公流程管理、测绘生产进度信息采集、测绘生产质检流程管理信息统计的功能。探索城市勘测类测绘单位从生产型测绘向综合服务型测绘转型升级,开展信息化测绘体系建设,在数据获取、数据处理、数据服务及社会应用等方面进行研究,解决测绘地理信息数据生产与需求的矛盾,突破测绘地理信息资源整合与共享利用的瓶颈,从整体上提高测绘地理信息综合服务能力。     

基于EPS的宗地图测绘一体化软件设计与开发

针对现阶段宗地图测绘内业自动化程度及生产效率不高等问题,采用清华山维软件EPS平台进行模板定制、二次开发相关功能模块,实现了从宗地图绘制、面积赋值重算到宗地图输出等全流程一体化、自动化作业,极大地提高了生产效率。