摘要：Plasmon induced transparency(PIT)in the transparent window provides new insights into the design of optical filters,switches and storage,and integrated *** slow light effect makes PIT applicable to both sensors and slow light ***,PIT can overcome the diffraction limit of light,which makes it possible to manipulate light on a half-wavelength scale and brings good news to the miniaturization of optical *** this paper,we first summarize the researches of PIT phenomenon based on metal-dielectric-metal(MDM)waveguide systems and analyze the physical mechanisms of PIT including bright-dark mode interactions and phase-coupling-induced ***,we review the applications of PIT in optical sensing,optical filtering,optical switching,slow light devices and optical logic *** last,we outline important challenges that need to be addressed,provide corresponding solutions and predict important directions for future research in this area.

摘要：Cortical electrodes are a powerful tool for the stimulation and/or recording of electrical activity in the nervous ***,the inevitable wound caused by surgical implantation of electrodes presents bacterial infection and inflammatory reaction risks associated with foreign body ***,inflammation of the wound area can dramatically worsen in response to bacterial *** consequences can not only lead to the failure of cortical electrode implantation but also threaten the lives of ***,we prepared a hydrogel made of bacterial cellulose(BC),a flexible substrate for cortical electrodes,and further loaded antibiotic tetracycline(TC)and the anti-inflammatory drug dexamethasone(DEX)onto *** encapsulated drugs can be released from the BC hydrogel and effectively inhibit the growth of Gram-negative and Gram-positive ***,therapeutic cortical electrodes were developed by integrating the drug-loaded BC hydrogel and nine-channel serpentine arrays;these were used to record electrocorticography(ECoG)signals in a rat *** to the controlled release of TC and DEX from the BC hydrogel substrate,therapeutic cortical electrodes can alleviate or prevent symptoms associated with the bacterial infection and inflammation of brain *** approach facilitates the development of drug delivery electrodes for resolving complications caused by implantable electrodes.

摘要：针对数据驱动时频分析方法(Data-Driven Time-Frequency Analysis,DDTFA)的初始相位函数估计直接影响算法的收敛性及分解精度的问题,将多尺度线调频基稀疏分解方法(Multi-Scale Chirplet Sparse Decomposition,MSCSD)引入DDTFA的初始相位函数估计中,提出了MSCSD-DDTFA方法,并应用于变转速齿轮故障诊断中。MSCSD方法采用分段线性拟合的思想,可从低信噪比信号中精确地估计出信号的瞬时频率,进而求取相位函数;DDTFA方法则可根据MSCSD估计的相位函数不失真地分离出时变非平稳信号分量;最后,可根据MSCSD估计出的瞬时频率对信号分量进行阶次包络分析,获取阶次包络谱以诊断变转速齿轮故障。算法仿真和应用实例表明:该方法可准确分离出信号中的时变非平稳信号分量,并提取变转速齿轮故障特征。

摘要：科学配备消防装备、提升灾害事故现场风险评估能力是减少消防员伤亡事故的重要手段。为深入剖析火灾环境下“热源服装人体”系统的传热机制,提高服装对消防员的职业防护,该文基于燃烧假人系统和计算流体动力学原理,建立了“火灾环境-防护服-人体”三维传热模型,定量分析了火场热流密度、热暴露时间、服装厚度和服装表面发射率4个因素对人体表面皮肤烧伤比例和分布的作用机制。模拟计算结果表明:服装因素对烧伤比例的影响与处在火灾中心的着装人体表面传热方式和人体皮肤厚度分布相关;消防服设计方面需优化开口结构设计,以降低颈部、小臂和小腿的烧伤比例。

摘要：基于声表面波的延迟线理论,设计出一款新型的无线无源SAW温度和压力混合传感器。该传感器中温度对信号的影响掺杂在检测压力变化的信号中,通过引入权重因子,把压力信号从温度和压力共同影响的混合信号中分离出来,从而达到温度和压力同时检测的目的。此设计充分利用了IDT的转换能量,减少了信号之间的干扰,并对IDT及反射器进行优化设计,提高了传感器的灵敏度。此传感器具有无线无源等特点,适合在复杂环境下工作。

摘要：通过问卷调查方式分析了254位18～55周岁女性的穿鞋习惯、喜好和对高跟鞋的需求，提出了舒适性高跟女鞋概念。同时对可调节跟高鞋进行了研究，对鞋跟的可调节性、勾心弧度、前跷高度、后跟弧度以及前掌着力点等位置的变化，提出了相应的设计方案，并经过主观舒适度评价和足底压力测试进行了验证。结果表明，可调节跟高区间设定在30～60ram，既满足当代女性需求的跟高区间，也可以提高鞋的实用性。同时通过结构设计和功能性材料的选择，能够有效缓解跟高变化后鞋的不适感，缓解跟高变化后足压的集中分布，减小压力峰值，以提高鞋的舒适性。

摘要：龙塘湖公园位于重庆市礼嘉片区,与龙湖礼嘉天街相邻。改造前公园的人气与活力相对较低。通过前期调研,设计团队总结了场地的现状问题。1)公园可达性差,虽紧邻2条城市次干道,但入口引导性差;内部以一条环湖跑道串联主要活动区域,公园内外高差较大,出入便捷度低。

摘要：A wide range of terrain features and landforms, which are exemplified by intricate geological formations and diverse rock compositions, are found in the western mountainous regions of China. These areas frequently encounter geological disasters. As one of the natural disasters, landslides lead to considerable loss of human life and property. Considering mitigation of the losses caused by landslide disasters, a necessary measure for disaster prevention and mitigation involves conducting detailed investigations and monitoring of landslides, which is also the cornerstone of landslide warning. This study compares and analyzes the feasibility of the magnetotelluric detection method for landslides using the results of engineering geological surveys and landslide monitoring. The study aims to address the scientific problem of the validity of using magnetotelluric methods to detect landslide development processes. The Tangjiawan landslide signal on the left side of the K94+000~K94+145 section of the Wenma Expressway is analyzed by employing engineering geological survey, magnetotelluric detection, landslide monitoring, landslide analysis, and other methods. Analysis results provide the static electrical characteristics of lithology, structure, and groundwater, as well as the dynamic electrical characteristics of landslide development. This study focuses on analyzing the relationship between the methods of magnetotelluric detection and engineering geological surveys and the results of landslide monitoring. The workflow and methods for data collection, processing, inversion, interpretation, and analysis using the magnetotelluric method to detect the dynamic development process of landslides are presented in the conclusion. Preliminary conclusions indicate a strong correlation between the dynamic changes in magnetotelluric wave impedance with the surface displacement of landslides and the dynamic changes in groundwater. The use of the magnetotelluric method for landslide detec

摘要：针对铁路货车车轮踏面伤损检测问题,设计铁路货车车轮踏面伤损动态检测系统,提出剥离和擦伤的定位方法。首先对车轮踏面图像进行平滑去噪;然后对图像进行基于平稳小波和Canny融合算法的边缘检测,并根据标准车轮的宽度确定踏面区域;最后,根据剥离和擦伤的不同特征,对剥离踏面区域图像进行基于分块思想和种子填充算法的剥离粗定位后,再进行基于Canny算法和跟踪法的剥离精定位,并给出基于踏面边缘线搜索的擦伤定位方法。实验结果表明:在铁路货车运行速度为0.5 km/h^10 km/h时,踏面剥离的定位准确率达到96.7%,定位精度达到3 mm;擦伤定位准确率达到97.8%;可满足现场动态检测的要求。

摘要：轮胎压力监视系统是一种当轮胎气压与温度超出正常标准时,能及时提醒驾驶者的系统。研究的目的在于对该系统一款新型无源无线声表面波微传感器的设计进行理论分析和参数优化。为此,根据耦合模理论推出了P矩阵模型新的表示形式并验证了该表示形式在分析双向对称一致IDT和反射器方面的适用性和精确性。应用P矩阵方法分析IDT的输入导纳和该SAW器件的插损,结果显示该传感器设计具有优良的插损性能。