A novel proximity graph: Circular neighborhood cell graph for histopathological tissue image analyzing

The cell is the smallest unit of living beings, which has structural and functional properties. Almost all cell behaviors are regulated by various intracellular reactions initiated by the signaling. The signaling and the distance between cells influence each other. Thus, cell-location-based modeling and analyzing of histopathological tissues provide important information to the expert. In literature, methods such as distance-based threshold, K-Nearest Neighbor, Voronoi graphs, Delaunay triangulation, and colored graph have been used. However, circular neighborhood relationships of cells have not been considered by any CAD system so far despite of its crucial impact. Thus, we developed the circular neighborhood cell-graph. Histopathological images of liver were classified by using features extracted from T-Distance, K-Nearest Neighbor, Voronoi, Delaunay, and the proposed cell-graph. Then, the classification performances of the methods were compared. Experimental results show that liver tissue images can be classified with accuracy of 95.7% by using the features provided by the proposed cell-graph model.     

有色金属行业上市公司资本结构与企业绩效的实证分析

介绍有色金属行业及其上市公司的现状 ,应用混合数据采用TSCS分析方法 ,对有色金属行业上市公司资本结构与企业绩效的关系进行实证研究。结果表明 ,有色金属行业上市公司企业绩效与资产负债率负相关。认为理性的企业行为应当是尽可能降低企业资产负债率 ,优化企业资本结构 ,提高企业绩效     

倾斜煤层矿山开采沉陷分析

运用实测数据分析、模型试验和数学模拟方法，研究某倾斜煤层矿山开采过程中的沉陷和岩层移动。根据模型理论建立了相似模型，用2D-σ程序进行数值模拟。结果表明，沉陷和水平移动曲线不连续也不平滑，由于地质条件的影响，其变化是不对称的。得出沉陷参数、水平移动参数、顶部下沉量和其他用于预测地面移动的参数。这些参数值与当地采矿条件一致，有助于开采作业。实践证明，研究结果对预测地面移动和下沉有益。     

广西隆或金矿技术经济评价

广西隆或金矿剩余可采矿石储量为656177t，平均品位2．78g／t，金金属量1823．06kg。通过矿床经济评价指标的计算可知，隆或金矿年净利润为137．35万元，国家年获税101．65万元，投资利润率为15．71％，投资收益率为21．21％，静态投资回收期为4．7年，动态投资回收期为6．5年，财务净现值211．70万元，满足NPV≥0，财务内部收益率13．35％，与行业基准内部收益率相当。因此，本矿的开发经济效果较好，技术可行。此外，矿床的开发还可以促进县域经济的发展、解决部分下岗职工就业、稳定民族关系、提高当地群众生活水平和文化素质等，可以产生良好的社会效益。     

做好企业经营活动分析

现代企业依靠信息流动实现快速决策和有效管理。企业经营活动分析报告是企业的核心信息。要做好经营分析 ,除讲求分析报告的撰写水平外。针对不同的企业 ,必须准确把握分析的内容和侧重 ,按照分析对象的特点 ,采用有效的分析方法。介绍了工业企业中经营活动分析的基本内容和方法     

设备综合管理信息系统

论述了在现代化水平不断提高的今天 ,对大型生产及加工业的设备进行综合管理的必要性。在开发设备综合管理信息系统时 ,以设备周期费用最低的观点 ,在设备的选择、维修计划的制定等内容上要进行经济分析 ,以最好的经济效益为目标。在系统输出中 ,将设备事故发生的规律性信息反馈给领导及生产厂家 ,以便给设备的研制及选择提供辅助信息 ,同时给出了设备综合管理信息系统在系统分析及设计阶段的数据流顶层图 (TOP)和结构图     

凡口矿地表沉降监测方法及成果分析

介绍了凡口矿30余年来的地表沉降监测方法，对各类成因引起的地表沉降进行了数据处理和分析，并总结了凡口矿地表沉降特征和规律，得出了一些有益的结论。     

实战化要求下国产新型红外探测器质量现状

从满足武器系统实际使用要求的角度出发,分析实战化要求下,当前国产新型红外探测器质量现状和质量问题归零存在的不足,并对检验工作实践中发现的问题进行探讨,尝试提出一些能保证武器系统质量,满足装备实战化要求的解决办法.该研究可为从事军品研究、设计、制造和管理的人员提供参考.     

脱碳单元送尿素装置CO_2气体超温分析及对策

分析脱碳单元CO2气体超温的原因,采取一系列改进措施后,尿素装置CO2压缩机运行稳定,并实现了节能降耗。     

Study of planar structure applying reciprocity technique combined with MGEC and analysis of discontinuity

The 3D structure electromagnetic computation presents several difficulties related to the volume mesh. In fact, the entire volume space must be taken into account even the smallest details. In this article, we propose a formulation based on the reciprocity theorem combined with the generalized equivalent circuit method to model a planar 3D structure with both coaxial and planar excitation. The major advantage of this formulation is the fact to reduce the computational volume into 2D ones in the discontinuity plane. In addition, we focused on the calculation of the discontinuity between the excitation source and the planar structure to determine the exact behavior of the electric coaxial excitation model. The obtained current density, electric field distributions, and the input impedance are presented and discussed in the following sections. An approximately good agreement of input impedance with those obtained by the simulator and measurement is shown.