利用盈亏平衡品位进行黑斑矿的采选决策

通过盈亏平衡分析,确定宜春钽铌矿盈亏平衡品位,提出黑斑矿的处理方案。依据矿山管理目标所确定的生产技术经济指标及价格预测推算,2002年开采的Ta_2O_5盈亏平衡品位为0.0134％,送往选厂还是送往废石堆场的Ta_2O_5盈亏平衡品位为0.0120％。在现有的经济技术条件下,黑斑矿应确定为次边际经济资源,暂无开采利用价值。

基于网络荐购的高校图书馆采选决策模型研究

提出了一个基于网络的图书馆采选决策模型。此模型在读者网络推荐的基础上,结合文献外部要素特征及馆藏状况,分别赋予权重和量化值,经运算获得所选文献的理想度评分,以辅助采访人员进行决策。

高校图书馆读者决策采选模式的实践探索——以广州美术学院图书馆为例

以广州美术学院图书馆的读者决策采选实践为例,介绍了馆际互借、即采即借、读者推荐型PDA的实施情况,通过数据统计对读者情况、图书学科分布、利用情况进行了分析,指出PDA是图书馆资源建设的重要补充形式,高校图书馆要根据自身馆情选择适宜的PDA模式,在实施过程中重视服务宣传和及时反馈,并积极评估实施效果。

Selection method of risk response schemes for mining project based on fuzzy preference relations

To overcome the subjectivity of experts in the process of risk response scheme selection, according to the theory of group decision making, a selection method and flow of the risk response schemes for a mining project was proposed based on fuzzy preference relation and consistency induced ordered weighted averaging (C-IOWA) operator,which can overcome the loss of information in the process of group decision making to a great degree, and improve its efficiency and quality.A numeric example was introduced to illustrate the application of the method, also validating the method as scientific and practicable.