多信息融合的汉语方言辨识

文章提出了一种融合声学、音素配位和韵律特征等多信息融合的汉语方言辨识系统,分析了将语言信息转化为这些特征的实验方法,在此基础上,根据汉语方言辨识的特点,提出了一种基于概率模型的多信息辨识机制,实验结果表明,韵律特征对于短时语音具有很好的辨识效果,而音位配列特征对于长时语音更加有效。对于汉语三种方言的辨识,融合这三种特征的辨识率达95％。     

熔断电阻自动测试设备研究

为了解决熔断电阻器测试过程中人工因素影响大,测试结果离散性大的问题,提出一种熔断电阻器自动测试设备的设计方案,通过采用智能化设计,让设备自动地测量待测电阻的阻值,并加载所要求的测试电流,有效地解决了以上问题。与传统测试设备相比,熔断电阻自动测试设备具有测试精度高,重复性好,操作简便,可靠性高等多种优势。     

金属丝熔断特性的研究

文章对铜丝通电熔化熔断进行了理论上的一些研究。当熔断时间较短时,可忽略热辐射影响,得到熔断电流的平方与熔断时间的倒数成线性关系。其截矩的平方根是该长度截面铜丝的安全工作的界限。自行设计了一种测定金属丝熔断特性的实验,实验结果与理论结论非常吻合。     

大工件表面强化炉内重熔工艺的相似理论

重点讨论了重熔时存在的相似准则及应用该准则研究工件炉内重熔时的关键控制参数的生产简介。     

Recycled paperboard with a barrier layer for food contact: set-off during stacking or reeling. Analytical method and preliminary results

The use of recycled paperboard for packaging dry foods is in the interest of sustainability of resources, but in most applications, the food must be protected against contamination, such as by a functional barrier on the internal surface of the paperboard box. After application, the paperboard is usually stacked or reeled before making boxes. During this period, the food-contact surface of the barrier layer is in contact with the outer side of the paperboard, which may result in set-off and subsequent contamination of food. A method is described for the determination of this path of migration, based on the taped format also used for the measurement of the barrier efficiency. Recycled paperboard containing the three surrogate substances n-heptadecane, 4-methyl benzophenone and dipropyl phthalate was taped to the food-contact side of the barrier layer. Pressure onto the test packs did not seem to be a relevant parameter. After periods of interest, a piece of the paperboard with the barrier layer was extracted and analysed for the surrogate substances. Another piece may be brought into contact with silicone paper to simulate the transfer to food. After 2 weeks at 60°C (simulating about 1 year at 25°C), set-off and the transfer to the silicone paper exceeded 1% for all barrier materials tested, but after 6 weeks at 40°C (around half a year at 25°C), set-off remained below 1% for all barrier layers except a multilayer with polyethylene on the food-contact surface. The preliminary conclusion is that set-off should be taken seriously, but may be kept low enough to provide sufficient protection of the packed food.     

热熔黏合衬黏合机理及其在服装应用中的探讨

随着社会经济的发展,人们对服装款式、档次的要求越来越高。一件创意与设计完美的服装不仅来自于设计师创作的灵感,还来自于辅料与面料的绝佳组合。针对近几年来黏合衬实际生产和服装应用过程中出现的一些问题,同时基于国外黏合机理方面的研究成果,对热熔黏合衬的黏合机理进行了探讨,对影响压烫工艺的参数进行了分析,并介绍了黏合衬的筛选流程,以此进一步推动黏合衬的生产及其在服装上的应用。     

表面熔敷技术概述

针对现代工业发展的需要,主要对感应熔敷技术、激光熔敷技术、堆焊熔敷技术、热喷涂技术等表面熔敷技术的定义、特点、应用进行了概括说明,对表面熔敷技术中涉及的工艺、所用材料、所需条件进行了阐述。     

熔座夹切口成形模设计及改进

介绍了熔座夹零件成形模由多副模具到1副模具的设计改进过程及其结构、模具工作过程和主要模具零件的设计 ,并提出了模具设计及制造时应注意的事项。该模具提高了生产效率和工件质量 ,有较好的经济效益。     

变截面板簧的特征与三辊模板式轧机的研制

介绍了变截面汽车板簧的成形原理。分析了伺服成形、仿型成形及辊锻成形的特点。根据仿型成形的原理。设计了一种适合中小企业技术特征、专门用于生产变截面汽车板簧的三辊模板式轧机，经过生产实践验证，运行良好，满足板簧产品生产需要。     

壳牌粉煤气化炉渣屏结渣原因探讨

介绍SCGP气化炉渣屏结构和功能。描述了渣屏结渣问题,从渣屏结构、热传递和煤质等方面分析渣屏结渣的机理,讨论了防止渣屏结渣的措施。