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.     

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。     

基于攻击图的多源告警关联分析方法

现有基于攻击图(attack graph)的告警关联分析方法难以全面处理告警关联关系,同时,漏报推断和告警预测带来大量冗余路径误报。针对以上问题提出了基于攻击图的多源告警关联分析算法,能够综合应用图关系和阈值限制进行联动推断和预测,达到更为全面解决攻击图中的告警漏报和减少误报数量的目的。同时,将告警处理算法并行化,提出了AG-PAP告警并行处理引擎。实验表明,该方法能够提升关联分析的有效性和性能表现。     

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.     

富氧燃烧技术在攀长特应用的可行性研究分析

依据"富氧燃烧"的机理和特点,通过对攀长钢公司工业炉窑上富氧燃烧应用的分析与研究,为特钢企业的节能降耗拓展思路、提供参考。     

基于数据仓库的煤炭企业报表系统的设计与实现

将数据仓库技术应用于报表系统,从大量的运营数据中提取出关键数据,同时发现有用的信息,对于帮助企业管理人员制定正确的决策,提高企业整体竟争力有着重要的意义。针对某煤炭企业对制作报表所提出的需求,设计并开发了基于数据仓库技术的出帐分析报表系统,其核心部分就是构造数据仓库。     

舵机双余度电传控制系统设计

论述了双余度电传控制系统的结构设计和余度配置.设计了双余度电传控制系统的硬件电路和软件部分.针对电传控制系统中的信号处理、监控面选择、BIT、故障综合与处理等问题进行了分析,并提出了设计方法.通过故障模拟输入验证了设计的合理性与正确性.实践证明,双余度电传控制系统明显改善了系统的可靠性和稳定性.     

基于UG高级仿真模块的压力机曲轴危险截面的分析

阐述了UG高级仿真模块的特点.运用UG高级仿真模块对J21-80压力机的曲轴进行有限元分析,并得出与实际受力情况相符的结论.     

分析水对无烟煤挥发分测定产生的影响

根据GB／T212-2008《煤的工业分析方法》中的规定，在测定挥发分时，通过实验对比，无烟煤中水分随着煤的变质程度加深而呈规律性变化。从泥炭、褐煤、烟煤到年轻无烟煤水分逐渐减少，从年轻无烟煤到老年无烟煤的水分又逐渐增加。由于煤中水分过高和煤的氧化增重，导致挥发分测定值产生负值，影响挥发分的测定结果。