基于线性递减系数粒子群优化算法的组卷实现

为了避免目前常用的组卷算法组卷时间长、程序结构复杂、收敛速度慢等缺陷,提出基于线性递减系数粒子群优化算法的组卷策略。通过调整惯性系数,使得步长较小,惯性权系数的变化幅度小,这种减小趋势较为缓慢的方法能够避免陷入局部最优。并对数学模型以及线性递减惯性权系数进行了理论设计,同时通过编程实现了该算法。测试结果表明加入线性递减系数后运算迭代次数明显减少,证明加入线性递减系数后的组卷策略收敛性好,能够高效准确地按照一定的预期条件进行组卷,符合预期要求。     

基于Lodop的Web方式单据打印技术的改进及实现

单据打印是信息管理系统中非常重要的组成部分之一。当前电子商务系统的应用越来越多,单据打印的需求也随之增长,以往的IE自带的Webrower控件由于受到浏览器限制,己远不能满足日常需求,如何解决Web系统中单据打印及套打问题显得尤为重要。文中通过分析基于Spring MVC＋Freemarker技术改进单据打印方式的可行性及Lodop打印控件的自身优势,提出了一种新的打印模板编写方式,通过软件测试和实际应用中用户的反馈表明,该方法能有效提高单据打印的效率,缩减系统打印部分的开发周期,节约系统开发成本。     

Oxygen‐Free Highly Conductive Graphene Papers

Graphene papers have a potential to overcome the gap from nanoscale graphene to real macroscale applications of graphene. A unique process for preparation of highly conductive graphene thin paper by means of Ar⁺ ion irradiation of graphene oxide (GO) papers, with carbon/oxygen ratio reduced to 100:1, is presented. The composition of graphene paper in terms of carbon/oxygen ratio and in terms of types of individual oxygen‐containing groups is monitored throughout the process. Angle‐resolved high resolution X‐ray photoelectron spectroscopy helps to investigate the depth profile of carbon and oxygen within reduced GO paper. C/O ratios over 100 on the surface and 40 in bulk material are observed. In order to bring insight to the processes of oxygen removal from GO paper by low energy Ar⁺ ion bombardment, the gases released during the irradiation are analyzed by mass spectroscopy. It is proven that Ar⁺ ion beam can be applied as a technique for fabrication of highly reduced graphene papers with high conductivities. Such highly conductive graphene papers have great potential to be used in application for construction of microelectronic and sensor devices.     

Grease Resistance of Corn Zein Coated Paper

The grease resistance of corn zein coated paper was measured as related to coating level, plasticizer addition and time. Overall grease resistance ws normalized by time and expressed as percent area stained/hr (%AS. hr^-1). For a 2.2 kg coating ream^-1 of paper, %AS hr^-1 was greater than both unplasticized and plasticized 4.4 and 6.6 kg ream^-1 coating levels (p < 0.001). There was no difference in %AS hr^-1 among 4.4 and 6.6 kg ream^-1 zein coated and commercial polyethylene laminated paper (p:ME0.098). Plasticizer increased (p < 0.001) and creasing had no effect (p=0.71) on %AS hr^-1. Electron microscopy showed discontinuities in zein coating at the 2.2 kg ream^-1 level. The 4.4 and 6.6 kg^-1 ream^-1 levels showed uniform coatings.     

刑侦痕迹提取用胶纸小试工艺

介绍刑侦痕迹提取用胶纸的实验室小试工艺,以及在刑事现场勘查或司法物证鉴定技术工作中的实际应用。     

造纸机真空吸水箱全陶瓷面板的研制与应用

本文通过对α－Ａｌ２Ｏ３微粒再加入添加改性等系列试验，获得了结构理想，性能优良的相变增韧微晶氧化铝陶瓷材料，用该材料制做的造纸机真空吸水箱全陶瓷面板，是一种节能、降耗、永久型的产品。     

纸张相对荧光强度的测定

将荧光粉(稀土铕有机配合物)与纸浆混合抄造出荧光纸张,并分别对荧光粉和荧光纸张的相对荧光强度进行定量测定,探讨了纸张相对荧光强度的定量测定技术。     

连续油管发展现状与趋势

从连续油管的材料、制造技术及作业技术等方面概述了连续油管的发展和应用情况,重点分析了TMCP态超高强度连续油管、调质型连续油管、耐腐蚀连续油管的技术发展趋势。分析指出,连续油管的市场前景良好,并且随着油气的深入开采和井况的日益复杂,从而对连续油管的规格及性能提出了更高要求;当前主要形成高强度低合金钢系列的连续油管,并出现了高耐蚀合金、复合材质以及调质型等多个系列的发展方向;未来连续油管的规格将向更大直径和长度的方向发展,性能向更高强度、更长疲劳寿命和更优耐蚀性方向发展,同时将更加关注产品的经济性及可制造性。     

科技论文中、英文摘要的写作

从摘要的概念和主要功能入手，阐述了摘要的类型，并指出了科技论文常使用报道性摘要。详述了写作中英文摘要应注意的问题。尤其是写作英文摘要时，除了应注意用词、时态、语态、人称、标点符号、缩写等方面符合英文的写作习惯以外，更要注重英文摘要的规范性与完整性，以便达到促进科技期刊、论文、成果的国际交流之目的。     

耐高温鸡蛋油香精的开发研制

本文介绍了通过对鸡蛋所含香气成分的分析 ,利用生物酶解作用和热反应相结合的方法以及运用了细腻的调香技巧 ,制备了天然感强、口感厚实、耐高温性能较好的鸡蛋油香精