强化监督措施提高监督质量努力为企业改革发展提供有力保证

江泽民总书记在党的十五大报告中指出 :反对腐败“监督是关键”。今年以来 ,我们紧紧抓住“监督”这一关键环节 ,强化监督约束机制 ,加强领导 ,明确责任 ,突出重点 ,强化措施 ,务求实效 ,不断加大反腐败斗争的力度 ,领导干部廉洁自律意识明显增强 ,政务公开透明度明显提高 ,干部职工监督意识明显增强 ,较好地保证了反腐倡廉法纪法规的贯彻执行和反腐败三项任务的全面落实 ,推动了全矿党风廉政建设和反腐败工作的健康深入发展 ,为矿井两个文明建设营造了良好的环境。1　强化监督措施 ,不断完善适应形势发展需要的监督机制　　中纪委三次全会…     

Real-time multiple people tracking for automatic group-behavior evaluation in delivery simulation training

This paper aims at generating an automated way to evaluate the team-behavior of trainees in a delivery simulation course using video-processing techniques with emphasis on multiple people tracking. The paper is composed of two interacting, but clearly separated stages: moving people segmentation and multiple people tracking. At people segmentation stage, the combination of the Gaussian Mixture Model (GMM) and the Dynamic Markov Random Fields (DMRF) technique helps to extract the foreground pixels. For a better extraction of the human silhouettes, the energy function of DMRF is extended with texture information. At multiple people tracking stage, we concentrate on solving human-occlusion problem caused by interacting persons based on silhouette data and a non-linear regression model. Our model effectively transfers the person location problem during the occlusion into the finding of the local maximum points on a smooth curve, so that visual persons in the partial or complete occlusion can still be precisely captured. We have compared our algorithm with two other popular tracking algorithms: mean-shift and particle-filter. Experimental results reveal that the correctness of our method is much higher than the mean-shift algorithm and slightly lower than a particle-filter, however, with the major benefit of being a factor of 10–15 faster in computing.     

液压油缸试验台研制

针对现有液压油缸试验台存在的一些弊端,提出了采用电液比例技术的改造方案,设计了液压系统与试验台控制系统,并论述了系统的配置与工作原理.该系统将计算机控制、检测技术、计算机网络技术与液压控制系统有效地结合起来,可对液压系统各参量进行实时控制,对液压缸各种性能参数进行巡回跟踪检测,使液压缸测试实现了自动化和智能化.     

加工中心故障的分析与排除

例1:有一台加工中心,开机后各轴动作正常,但主轴不旋转。故障分析与排除:机床开机后,三轴动作正常,并且能够完成回原点的动作。说明机床的故障主要在机床的主轴部分。检查主轴的传动皮带有无断裂,手动旋转主轴检查主轴机械部分有无卡阻现象,主轴上的刀具松开与夹紧机构动作是否     

采用火钻扩孔克服南芬露天矿大底盘抵抗线的探讨

本文介绍了南芬露天矿由于岩层倾斜较缓（40°～50°），致使下盘台阶坡面角减小，底盘抵抗线较大，爆破后易残留根底。为此，本文推荐了俄罗斯使用火钻扩孔法，以增大孔店装药量，在不增加超深的情况下，克服根底的经验。该法还可以提高生产率和降低成本。     

卸荷条件下岩石破坏能量演化试验研究进展

岩石在变形破坏过程中不断与外界交换着物质和能量,是一个能量耗散的损伤演化过程,岩石破坏的实质是能量驱动下的状态失稳现象。综合介绍了在开挖瞬间,迅速增大的轴向应力随着时间增长逐渐趋于稳定和围压瞬间卸载的应力重分布情况,目前主要采用轴压升高、围压降低而轴压不变、围岩降低的室内试验方案。结果表明:岩石卸荷破坏具有明显的围压效应,总应变能、弹性应变能和耗散能与初始围压呈正相关关系;随着卸荷速率的增加,能量转化速率不断减小,岩石容易产生瞬间动态破坏;不同卸荷水平下能量演化存在明显的差异;碎屑岩块分形维数越大,扩容现象越明显,穿晶、沿晶裂纹越发育,消耗能量越多。基于现有的研究成果,提出完善试验系统、采用与工程实际相符合的应力路径、开展微细观裂纹研究、深入能量转化敏感阶段研究的发展趋势。     

Antibacterial activity and mechanism of a novel bacteriocin produced by Lactiplantibacillus plantarum against Escherichia coli and Staphylococcus aureus

The purpose of the study was to explore the antibacterial effect and mechanism of a novel bacteriocin of Lactiplantibacillus plantarum (L. plantarum) against Escherichia coli (E. coli) and Staphylococcus aureus (S. aureus). The antibacterial activity was determined by the Oxford cup method, and the dynamic growth curves were conducted with continuous shaking incubation. The result showed that the bacteriocin was a protein or protein-like antibacterial substance susceptible to pepsin and trypsin. And it had good antibacterial activity, pH stability, thermostability and enzyme treatment stability against E. coli and S. aureus. The SEM, flow cytometry and nucleic acid leakage showed that the bacteriocin disrupted the cell structures of the two bacteria by damaging cell walls and cell membranes. An agarose gel electrophoresis and SDS-PAGE analysis showed that the bacteriocin inhibited DNA replication and interfered with the protein formation, which resulted in the inhibition of the two bacteria's growth. Therefore, the use of the L. plantarum bacteriocin might be a promising biocontrol strategy to inhibit the pollution of E. coli and S. aureus simultaneously in foods.     

机载智能液压泵的建模与仿真

介绍了机载智能液压泵的结构、工作原理 ,对液压泵变量调节系统进行了数学建模和仿真。结果表明 ,斜盘位移响应的上升时间小于 2 2 ms,超调小于 8%,静态精度小于 0 .7%,变量机构平衡弹簧的最佳预压缩力相当于伺服阀供油压力的 1 /2 ,液压泵排油压力对变量调节响应时间的最大影响为 2 ms,液压油体积弹性模量取值的变化对变量调节没有明显影响 ,但伺服阀的恒定供油压力必须保证。     

Fast hyperspectral band selection based on spatial feature extraction

Hyperspectral images usually consist of hundreds of spectral bands, which can be used to precisely characterize different land cover types. However, the high dimensionality also has some disadvantages, such as the Hughes effect and a high storage demand. Band selection is an effective method to address these issues. However, most band selection algorithms are conducted with the high-dimensional band images, which will bring high computation complexity and may deteriorate the selection performance. In this paper, spatial feature extraction is used to reduce the dimensionality of band images and improve the band selection performance. The experiment results obtained on three real hyperspectral datasets confirmed that the spatial feature extraction-based approach exhibits more robust classification accuracy when compared with other methods. Besides, the proposed method can dramatically reduce the dimensionality of each band image, which makes it possible for band selection to be implemented in real time situations.     

A semi-supervised spatially aware wrapper method for hyperspectral band selection

Band selection is widely used to identify relevant bands for land-cover classification of hyperspectral images. The combination of spectral and spatial information can improve the classification performance of hyperspectral images dramatically. Similarly, the fusion of spectral–spatial information should also improve the performance of band selection. In this article, two semi-supervised wrapper-based spectral–spatial band selection algorithms are proposed. The local spatial smoothness of hyperspectral imagery is used to improve the performance of band selection when limited labelled samples available. With superpixel segmentation, the first algorithm uses the statistical characteristics of classification map to predict the classification quality of all samples. Based on the Markov random field model, the second algorithm incorporates the spatial information by the minimization of spectral–spatial energy function. Four widely used real hyperspectral data sets are used to demonstrate the effectiveness of the proposed methods, when compared to cross-validation-based wrapper method, the accuracy is improved by 2% for different data sets.