知识智能查询的通用数据挖掘系统构建分析

介绍一个通用型、可扩展、开放性、智能化的数据挖掘系统(data mining system,DMS)的构建。通用数据挖掘系统框架可以不依赖于具体的数据库(DB)软件,以此为基础进行决策分析和判断,这样可以让数据挖掘系统具有很好的通用性和智能性。     

化工管道弯头开裂失效原因分析

通过对施焊时开裂的20钢弯头试样的裂纹宏观形貌观察、材料的化学成分分析、力学性能测试、断口分析、金相检验等理化检验,并结合弯头的热推加工工艺进行失效分析。结果表明,该弯头产品存在原始裂纹,本次施焊过程造成贯穿性裂纹是由于原始裂纹受热扩展所导致的二次开裂。     

从CAD到GIS数据格式的转换

以中科院Super- Map平台为例,介绍了CAD数据转换GIS数据过程以及注意事项,并对其转换过程进行详细的论述.     

Due diligence in mine feasibility studies for the assessment of social risk

Mining communities in different geographic locations may differ widely in terms of culture, environmental characteristics, and collective attitudes towards mineral resource development. The mining industry and a number of communities have realised the need to work together to establish a framework for sustainable equitable partnership that meets the priorities of each side. Risk assessment of a mineral resource development project contains social factors that needs to be addressed as part of due diligence in feasibility studies. The findings of such an analysis can provide key inputs for the identification of issues required to be negotiated as part of an agreed framework, leading to an impact benefits agreement (IBA). This article reviews and analyses IBAs in Canada for classification of the issues into categories and sub-categories. Following this, a specific methodology for pre-feasibility due diligence that addresses social issues is described, with the implementation of a proposed confidence assessment demonstrated through case study analysis. The work introduces an approach for addressing social risk in mine feasibility studies.     

复二重线材轧机技术改造

通过对太钢线材厂复二重线材轧权技术改造的介绍，旨在为国内同类型轧机的改造提供经验。     

LabVIEW数据拟合

目前数学只能解决含二个未知数的数据拟合，而经常面临含三个未知数的数据拟合则无法解决。论述了这种解题思路并用LabVIEW软件实现。并论述了提高运行速度的分步计算法以及计算精度高的特点，同时介绍了幂函数全象限拟合的解决方法。     

Effect of variety and harvest date on pectin extracted from chicory roots (Cichorium intybus L.)

The influence of harvest date on pectin quality and yield of five varieties of chicory is investigated in this work. The pectin is extracted from the raw material with an acidic treatment at 85 °C for an hour after inulin extraction. Main changes due to harvest date are observed in terms of neutral sugar content, average molecular weight, esterification degree and extraction yield. The galacturonic acid content remains relatively constant throughout the harvest period. While no statistically significant differences (p < 0.05) in terms of galacturonic acid content and neutral sugar content are observed between the five cultivars studied, average molecular weight, esterification degree and extraction yield are significantly affected by the cultivar type. Depending on the harvest date, a broad range of pectins can easily be extracted from chicory pulps.     

计算机联锁的数据结构及进路搜索算法

介绍了存储在计算机内参与联锁运算的数据组织形式,以及要产生进路的进路搜索算法,通过具体实例说明算法的数据产生原理,给出了进路搜索所要遵循的基本原则和改进措施,得出了各种数据结构和算法的优劣.     

混凝土自愈的试验研究

以混凝土自愈性为研究内容,用不同种类混凝土的动弹性模量指标的变化率来表征养护过程中混凝土的性能恢复状况,并系统比较了不同种类混凝土的抗冻融性优劣,通过研究得出,适当的掺杂粉煤灰和引气剂可以提高混凝土自愈性,指出要注重非冻融季节对混凝土建筑物的养护,这对提高其抗冻融耐久性有重要意义。