filter相关论文
Purpose:The purpose of this study is to report a single center experience with portable digital radiographically(DR) gui......
Topological photonics have led to robust optical behavior of optical devices,which has alleviated the influence of manuf......
In this paper, the course of the filtration is analyzed.In order to study the filtration efficiency of the filter materi......
By using image recognition technology, the underground bin level can be detdcted. The bin image is noised by vibration, ......
Novel bandpass filters using hairpin defected ground waveguide (DGW) are proposed in this letter,.This paper standardize......
An improved subsurface drainage with characteristics of less land occupied and reasonable flow rate drained was presente......
Spark是类似于MapReduce的通用并行计算框架,它拥有MapReduce的所有优点.不同的是Spark将中间结果缓存到内存,减少了磁盘的读写次......
Input-output Data Filter based Recursive Bayesian Algorithm with Covariance Resetting for Identifica
To identify systems with Non-uniformly sampled input data,a filter based recursive identification algorithm with covaria......
A precision SU8 micromachining technique has been developed for terahertz waveguide components.These circuits are formed......
In this paper, we propose a QP-free infeasible method without a penalty function and a illter for constrained nonlinear ......
本文提出了一种新的创建虚拟三维训练环境的思路.讲述了三维场景的创建、视频的采集、三维目标的建立,并在三维场景的基础上实现了......
数字变频是软件无线电的关键技术之一.本文阐述了在软件无线电中,数字变频在实际应用的重要意义及优势,简述了其基本原理,主要包括......
Safety and feasibility of temporary superior vena cava filter combined with balloon dilatation and c
Objectives:To evaluate the safety and feasibility of temporary superior vena cava (SVC) filter combined with balloon dil......
Current Practice of Optional Inferior Vena Cava Filters:A Systematic Literature Review and Post Filt
IMPORTANCE:The availability of optional filters has altered the clinical practice patterns for inferior vena cava (IVC) ......
Choosing between temporary and permanent filtration protection:literature review and management prop
Purpose:To determine the best approach of choosing between temporary or permanent use of optional/retrievable inferior v......
Endovascular Treatment of Venous Thromboembolism Using Retrievable Caval Filter and Catheter-directe
Purpose: To evaluate the safety and efficacy of endovascular treatment of venous thromboembolism using retrievable caval......
Inferior vena cava (IVC) filters are made from either stainless steel or nitinol,a metal alloy of nickel and titanium.We......
Determination of Major Phenolic Compounds In Cigarette Filter By MagneticSolid Phase Extraction Coup
Phenolic compounds in cigarette smoke is an important class of substances closely related to the sensory quality of toba......
ACTIVE CONTROL ON BENDING-TORSIONAL COUPLED VIBRATION OF A SPACE FLEXIBLE STRUCTURE USING PIEZOELECT
The nonlinear dynamics of a space flexible structure presented a challenging modeling and control problem with its lumpe......
在十字型太赫兹带通滤波器的时域有限差分法仿真中,随着铝箔厚度增大,主峰变窄,且高频处出现多个异常透射峰。利用飞秒激光微加工......
基于人工表面等离子体激元(SSPPs)设计了具有陷波功能的多频带滤波器。首先,在波导结构上引入了渐变槽形单元结构,以获得更好的色......
针对随机跳频宽带雷达设计了一种旁瓣抑制滤波器, 考虑到瞬时带宽信号获取的代价较高, 以及其抗干扰性能弱等不足, 采用了一种脉冲......
超材料的发展为太赫兹技术提供了良好的载体, 使太赫兹器件得到飞速发展。滤波器作为其中重要的功能器件, 实现了太赫兹波段的单频......
用Ar离子辅助制备了ZnS和MgF2薄膜,依据滤光片吸潮波长漂移的测量,MgF2膜的聚集密度大约从未轰击时的0.8上升到轰击后的0.9～0.95,实......
制备了一种集成有太赫兹低通滤波器的高速、高灵敏度GaN/AlGaN高电子迁移率晶体管(HEMT)太赫兹探测器。实验研究表明, 当在太赫兹......
设计了一种带有条形间隔的矩形腔结构波导滤波器,并且利用时域有限差分法(FDTD)对其滤波特性进行了分析。结果表明该滤波器可以看......
采用传输矩阵法系统研究了含空气缺陷层的单负材料一维光子晶体光学特性。发现在禁带中出现的透射峰随着缺陷层厚度的增加向低频方......
红外弱小目标成像面积小、可用特征少,目标检测极易受背景杂波干扰,因此,如何准确地检测复杂场景下的弱小目标成为一个技术难点。......
基于受激布里渊散射效应，设计并实现了一种非周期性多阻带微波光子滤波器。采用可编程射频信号驱动电光调制器，产生可变多音抽运光，实......
为了检验应用在极紫外波段空间太阳望远镜上Al滤光片在空间辐照环境下透过率的变化情况,用能量100 keV,剂量为6×1011/mm2的质子束......
用重铬酸盐明胶底片可制成反射式全息滤光片,本文导出了这种滤光片的带宽理论公式,在修改的耦合波理论的基础上,导出了与记录全息......
提出了一种基于二氧化钒超材料的可调谐宽带带通滤波器。仿真结果表明:该滤波器在中心频率5.19 THz处的3 dB带宽为1.71 THz,最高传......
光纤内集成式滤波器有着广泛的应用需求,是光纤光学领域的重要研究内容之一。开展了基于单模多模单模光纤结构的滤波器设计的理论......
通过将熔锥结构中强、弱耦合段的总幅度耦合系数与滤波网络方程中的幅度耦合系数等效的方法,定量分析了双环、三纤互耦滤波器的频......
提出一种基于半导体光放大器的光纤环形激光器动态应变传感器系统。在此传感系统中,将基于半导体光放大器的光纤环形激光器结合光......
提出了一种基于不等占空比二元光栅的相位测量轮廓术(PMP)。所用的光栅只有0和255两个灰度,消除了投影仪的伽玛非线性对正弦光栅灰......
建立了(AB)N型一维光子晶体结构多通道可调谐滤波器模型, 其中A层是砷化镓（GaAs)材料, B层是由掺铝的氧化锌层和氧化锌层(AZO/ZnO)......
提出了一种基于受激布里渊散射的单双通带可切换的微波光子滤波器。通过改变抽运光与信号光两波长之间的间隔,可实现单通带滤波器......
采用时域有限差分(FDTD)法,对由银-氧化铟锡(ITO)薄膜构成的一维光子晶体结构在300~800 nm波段范围内的滤波特性进行了研究。仿真......
根据耦合波理论,体积全息图有很好的滤光特性,可以作为一种窄带滤光片在实际中得到应用.本文针对峰值波长、带宽和衍射效率这三个......
利用耦合模理论，分析了马赫-陈德尔(Mach-Zehnder)干涉型波分复用器的复用间隔，波长隔离度及输出功率等特性，讨论了它的温度稳定性，并......
针对内腔拉曼黄光激光器谱线中存在拉曼激光的实际情况,在考虑石英晶体的双折射率色散特性的情况下,将石英晶体和偏光棱镜组合设计......
基于表面等离子激元的传输及耦合特性,设计了一种耦合内嵌银条圆盘腔的金属-介质-金属弯曲波导滤波器结构。并应用有限元法对该结......
分析了窄带滤光片的调谐原理，拟合了一块实际滤光片的透射率函数，它是理论的透射率函数和一个洛仑兹函数的乘积。利用1.3μｍ的外腔式......
基于法布里珀罗（FP）结构的光纤光栅功能型器件的研制和应用是近年来光纤光栅领域研究方向细化后的一个热点，其在光纤通信、光纤传感等......
This paper makes a technical analysis of the converter’s topologies that are conventionally employed in three-phase thr......
Aiming at the shortcomings of current gesture tracking methods in accuracy and speed, based on deep learning You Only Lo......
Comparative Analysis of the Methods Used for Active Power Filtering in a Grid-Connected Photovoltaic
This paper presents a comparison of the results obtained from the integration of the photovoltaic system to the electric......
The design of large-scale,high-numerical-aperture,and broadband achromatism is a big challenge in metalens research. In ......
In view of the fact that most of the filter media of existing plugging evaluation instruments use steel plates or steel ......
