智能电话查询系统

介绍了一个用于交通信息查询的交互式对话系统-ShanghaiQuest。该系统集成了语音识别、文语转换和自然语言理解等技术，用户可以同这样一个自动的交通代理对话以获取所需的交通信息。     

A novel two-layer compact electromagnetic bandgap (EBG) structure and its applications in microwave circuits

Recently, photonic bandgap (PBG) structures have become one of the most interesting areas of research. These structures consist of one-, two- or three-dimensional finite periodically perforated dielectric/metallic material or ground planes that forbid the propagation of all electromagnetic waves within a particular frequency band (called the bandgap). This property permits additional control over the behaviour of electromagnetic waves. The research work was originally done in optical region, …     

基于运动控制芯片的舞台吊杆同步控制方法的研究

提出了一种基于精密运动控制芯片的舞台吊杆同步控制方法。以ARM微处理器作为核心部件,应用LM628运动控制芯片,将每根吊杆都按照相同的运动轨迹运行的控制方法,代替了传统的多根吊杆之间相互比对的同步控制方法。采用这种方法设计的系统结构简单,稳定可靠,实时性、动态性能较好,能够较好地解决舞台吊杆的动态同步控制问题,为舞台吊杆的控制提供了新技术、新方法。     

Effect of Compressive Deformation on Lenticular and Thin Plate Martensitic Transformations

The effect of compressive deformation testedabove the M_s temperature on the martensitemorphology in Fe-Ni-C alloys has been studied.Inthe Fe-30Ni-0.12C alloy,the M_s temperature is-50℃ The cylindrical specimens werecompressively deformed at -40℃.The strain rateswere 10,20,30 and 40%.X-ray analysis andmetallographic examination showed that nostrain-induced martensite was found.After quench-ing to -53℃,some thin plates and unusualmorphologies of lenticular martensites with bentand/or broken mid-ribs were observed.In theFe-30Ni-0.34C alloy,the M_s temperature is-120℃.Compressive deformation with differentstrain rates were carried out at room temperature.After quenching to the liquid nitrogen temperature,some bent thin plate matensites(unbroken)occur-red.The transformed twins in bent plate were alsobent and nearly parallel to the γ-α'interfaces.Orientation relationship between austenite and bentmartensite has been examined by means of trans-mission electron microscope.It was proved thatthese unusual morphologies are inherent in thecompressive pre-deformed austenite.     

细水雾灭火技术在厨房设备火灾中的应用和推广

文章介绍了国内外厨房设备食用油引发火灾的几率及火灾对人们生产生活影响和危害,概述了细水雾技术的发展历程,介绍了厨房设备火灾特点及细水雾灭火机理,阐述了厨房设备细水雾灭火技术的特点及具有良好的技术优势,是清洁、无毒、无污染高效的灭火技术,具有良好的应用和推广价值.     

Performance characterization of nanofiltration membranes based on rigid star amphiphiles

The objective of this study was to develop new nanofiltration (NF) membranes capable of providing significantly greater water permeability and higher rejection of water contaminants compared to state-of-the-art NF membranes. The active layer of the new NF membranes is prepared with rigid star amphiphiles (RSAs) synthesized as part of this study. Performance characterization for a first generation of RSA membranes in a bench-scale apparatus reveals that most of the new membranes provide water permeability of 1.3-3.1 times that of two commercial NF membranes with polyamide active layers while providing comparable rejection of the organic contaminant surrogate Rhodamine WT. However, the rejection of arsenious acid (H3AsO3) by most new NF membranes was found to be lower than that by the two commercial NF membranes tested. Future research efforts of this study will focus on exploring if H3AsO3 rejection could be significantly increased, without negatively affecting water permeability and organic contaminant rejection, by addition of various chemical groups to RSA hydrophobic cores and hydrophilic branches, and by RSA cross-linking.     

考虑调峰与储能特性的抽蓄电站服务电网综合评价

在“双碳”总目标的引领下,新能源进入高速发展阶段,但其随机性和不稳定性给电网带来影响,需要配备大规模可灵活性调节的储能进行保障。抽水蓄能作为电力系统的主要调节电源,在促进新能源消纳、调峰、储能等方面发挥着重要作用;而综合评价抽蓄电站服务电网的能力,对于引导抽蓄电站合理运行和布局,以更好地发挥其作用具有重要意义。传统的抽水蓄能评价模型无法量化评价抽蓄的储能和促双碳的作用,该文提出了一种考虑调峰与储能特性的抽蓄电站服务电网综合评价方法。针对抽水蓄能调峰和储能的特点及其对双碳的促进作用,提出相关指标,建立抽蓄电站综合评价指标体系;由属性层次模型确定各层次指标的权重,引入物元可拓理论构建考虑调峰与储能特性的抽蓄电站服务电网综合评价模型;通过实例对所采用的综合评价模型进行验证分析。研究结果量化了抽蓄电站的储能和促双碳作用,可为“双碳”背景下抽水蓄能的综合评价提供支撑。     

油罐清洁连体作业服的开发和工效学评价

根据油罐清洁环境和工作要求,以满足防护性为前提,通过功能性结构设计达到服装的合体性与舒适性.利用现有面料设计制作新型油罐清洁连体作业服,特别是腰部、膝部等大幅活动部位以及衣袖裤脚的收口处.通过人体工效学实验检验,5 cm最大打开量的腰部弹性折裥可使新型服装在直立或直身下蹲时保持合体性,轻度弯腰达2.5 cm平均打开量,弯腰抱膝等大幅动作时拉伸服装达4.6 cm的平均量.脚口和袖口的三角插片与拉链收口设计同常规橡筋收口服装在该处的皮肤覆盖程度无显著差异,并可提高舒适性.新型连体服装在所有的实验设计部位的人体活动限制均小于现有连体服,使人体肢体活动更加灵活.为提供集功能性、防护性与合体性、舒适性为一体的油罐清洁连体作业服提供参考.     

Correlation between clothing air gap space and fabric mechanical properties

To investigate the distribution of clothing air gap layers, clothes with the same pattern but different fabrics were put on a standard scan model. The [TC]² NX-16 three-dimensional (3D) body scanning technique was used to collect point cloud data and the overall 3D visualization model of clothing air gaps was represented in a novel way through computer graphics processing. The volumes of air gap space were calculated. The main fabric mechanical properties were investigated and the relationship among them was analyzed by stepwise regression. The results demonstrated a close relationship between clothing air gap space and fabric mechanical properties. The volumes of air gap space were significantly positively correlated with stiffness-bending length and warp density and significantly negatively correlated with drape-crest angle uniformity. The conclusion could play a role in predicting and controlling the clothing design process, especially the material design process of clothing.     

粒度分布函数在柴油机喷雾测量中的应用和比较

本文根据激光衍射粒子分析仪在各种不同实验条件下测得大量柴油机喷雾数据，对测量中应用的几种粒度分布模型（函数）做了比较研究，发现对于柴油机喷雾测量，独立分布效果最好。但若欲用经验分布预测未知喷雾特性，则Ｒ－Ｒ分布较好。文中还对实验数据做了统计，给出了Ｒ－Ｒ分布的分布参数的数值范围及其在数据组中的出现频数。