NAT K5×19S+PPC-16.00 mm压实钢丝绳研制

油井抽油用钢丝绳使用过程中易发生旋转并受到较大的冲击载荷,使用寿命较短,不能满足使用环境及条件。开发研制NAT K5×19S+PPC结构钢丝绳具有破断拉力高、不易变形、抗旋转、表面耐压能力及耐磨损性能好等特点。工艺设计股捻距倍数为7.5,钢丝绳捻距倍数为6.5,绳径相对公差0～+4%,锻打压缩率为18%～20%。通过试制并检验,钢丝绳捻制质量、表面质量、力学性能均符合石油行业相关标准要求,用户使用效果较好。     

利用大屏幕电视开展媒体增值业务

介绍有线电视网络公司利用大屏幕电视开展增值业务的成功经验,并提出改进经营理念是产业发展的关键.     

插编索扣用6×37(b)类钢丝绳生产工艺

介绍6×37(b)类钢丝绳用作插编索扣制作过程,总结钢丝绳插编索扣对钢丝绳质量性能的特殊要求。分析6×37(b)类钢丝绳股丝松散的原因,提出采取减小股绳的捻距、加强股绳机械矫直和捻绳时股预变形等措施,以减小钢丝绳捻制过程中产生的捻制应力。在实际生产中以股绳的扭力大小和表面温度来衡量捻制应力和钢丝残余应力的减少程度,使钢丝和股充分产生塑性变形,减小弹性变形所产生的变形能,从而解决插编索扣用钢丝绳股及股中钢丝不松散的问题。     

浅谈企业廉政文化建设的意义及途径

通过廉政文化建设对和谐企业建设的促进,使两者有机的结合起来.采取在教育的大前提下用廉政来约束自己的行为,接受监督,倾听员工的意见和建议,使廉政文化渗透到企业的各项工作中,为企业人才队伍的建设创造条件.     

国有企业员工感恩情感的缺失与对策

企业的和谐必然要以先进的文化为引领.感恩文化是我国传统文化的重要内容,它流淌在我们民族文化的血管里,渗透在我们民族性格的行为中,把感恩文化作企业文化的基石,将对创建和谐企业起到积极作用.     

Robust background subtraction in traffic video sequence

For intelligent transportation surveillance, a novel background model based on Marr wavelet kernel and a background subtraction technique based on binary discrete wavelet transforms were introduced. The background model kept a sample of intensity values for each pixel in the image and used this sample to estimate the probability density function of the pixel intensity. The density function was estimated using a new Marr wavelet kernel density estimation technique. Since this approach was quite general, the model could approximate any distribution for the pixel intensity without any assumptions about the underlying distribution shape. The background and current frame were transformed in the binary discrete wavelet domain, and background subtraction was performed in each sub-band. After obtaining the foreground, shadow was eliminated by an edge detection method. Experimental results show that the proposed method produces good results with much lower computational complexity and effectively extracts the moving objects with accuracy ratio higher than 90%, indicating that the proposed method is an effective algorithm for intelligent transportation system.     

高扬程塔式起重机用钢丝绳研究与应用

阐述高扬程塔式起重机用钢丝绳技术条件,应首选不旋转钢丝绳。通过对比5种不同结构钢丝绳的抗旋转特性,结构为35W×7类抗旋转性能较好,指出应按相关规定选择钢丝绳捻向、规格及强度级别:钢丝绳捻向通常为交互捻,根据塔式起重机的轮槽半径、提升质量等参数确定钢丝绳规格和强度级别。提出钢丝绳在安装、使用过程中的建议,以确保钢丝绳正常使用,发挥其最佳使用效能。