放顶煤工作面综合防灭火技术研究与应用

对江苏大屯煤电公司龙东矿放顶煤工作面的防灭火实用技术进行了阐述。重点分析了放顶煤开采在掘进、回采、停采时期的煤炭自然发火的原因和所采取的针对性防治技术。     

Hybrid SVM／HMM Method for Face Recognition

A face recognition system based on Support Vector Machine(SVM) and Hidden Markov Model (HMM) has been proposed. The powerful discriminative ability of SVM is combined with the temporal modeling ability of HMM. The output of SVM is moderated to be probability output, which replaces the Mixture of Gauss (MOG) in HMM. Wavelet transformation is used to extract observation vector, which reduces the data dimension and improves the robustness.The hybrid system is compared with pure HMM face recognition method based on ORL face database and Yale face database. Experiments results show that the hybrid method has better performance.     

Counting unrooted maps on the plane

A planar map is a 2-cell embedding of a connected planar graph, loops and parallel edges allowed, on the sphere. A plane map is a planar map with a distinguished outside (“infinite”) face. An unrooted map is an equivalence class of maps under orientation-preserving homeomorphism, and a rooted map is a map with a distinguished oriented edge. Previously we obtained formulae for the number of unrooted planar n-edge maps of various classes, including all maps, non-separable maps, eulerian maps and loopless maps. In this article, using the same technique we obtain closed formulae for counting unrooted plane maps of all these classes and their duals. The corresponding formulae for rooted maps are known to be all sum-free; the formulae that we obtain for unrooted maps contain only a sum over the divisors of n. We count also unrooted two-vertex plane maps.     

抽水引起岩土体内应力变化分析

针对开采地下水这一特定问题,以在抽水实践中地下水水位面是一以井心为顶点的旋转抛物面为出发点,研究了地下水开采过程中岩土体应力变化的时空规律。通过分析影响内部应力变化的宏观物理量—开采影响半径、井心水位下降和空间位置,可以方便的得到随着时间变化岩土体内部应力变化的全程规律。同时,分析了影响边界、下沉位置等因素对计算结果的影响。     

从小说《围城》看中国文化的面子观

面子及对面子的需求在中西文化中具有不同的文化特征。通过对《围城》文本的分析，可以检验布朗和莱文森·的面子理论在中国文化中的价值与理论解释力，从而阐释中国文化中面子的特殊含义与礼貌表现。     

采煤工作面瓦斯涌出分析及控制技术

分析了采煤工作面瓦斯涌出规律及其主要影响因素,论述了瓦斯治理及控制技术。     

数字监控系统中有辨认价值的人面像

结合案例,从分辨率的角度对监控系统中人面像的可分辨程度进行了论述,并说明了数字监控系统中提取的人面像在公安工作中的利用价值。     

综采工作面过超大断层的技术应用

介绍了杜儿坪矿68214工作面大断层,提出了通过大断层时采取的技术措施和打注高分子材料（马丽散N）的技术措施。     

加工硬质合金端铣刀刀槽时的工艺调整计算

硬质合金端铣刀刀体上的刀槽，通常将设计为槽底与铣刀轴线倾斜δ角，槽侧壁与铣刀轴线倾角为ω且偏移一个距离为ｅ，以使刀齿装夹在刀体上后获得端铣刀所需的几何角度。本文主要论述在万能铣床上铣削铣刀体上具有δ、ω、ｅ的刀槽时必要的工艺调整，利用矢量及座标转换推导了加工刀槽时必要的参数计算公式，为高效率、高质量地进行铣刀体刀槽的加工提供了一种精确可行的参数计算方法。     

天生桥水电站土石过水围堰的试验研究

本文通过对天生桥水电站土石过水围堰的试验研究,全面阐述了土石过水围堰的体型及其适用条件,提出了确定平台高程的定量标准。比较了混凝土面板、铅丝笼与钢筋笼等不同防护型式,通过试验与理论分析,求得稳定曲线与经验公式。试验结果表明:钢筋笼的稳定性为最好。