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In order to reduce the air pollution by traditional fossil fuel and save the charging cost,much attention has been paid ......
发展了离散零阶汉克尔变换并应用到光场均匀化的相位元件设计,结果显示出比二维傅氏变换更为理想和精确.......
应用近代光学的方法，对采样成像系统能量传递(大气传输-光学成像-采样-重建)过程进行了分析，给出了采样成像系统的传递函数。供采样......
光电成像系统由于欠抽样产生频谱混淆。 用矢量分析方法, 给出了正弦图像基元的混淆表达式。 具体分析了以矩形光栅为例的周期性目......
从标量衍射理论出发, 对基于阵列抽样的相干衍射成像中物波抽样针孔大小和图像传感器有效记录孔径对重现物波的影响进行了理论分析......
高质量的集成成像系统需要采集和存储大量图像数据。提出了一种新的计算机重构方法,可以减少集成成像系统显示端在计算机重构时所......
本文阐述了通过外业抽样调查进行亚洲象生境因子定量分析，利用遥感技术提取生境专题信息建立数据库，在此基础上，应用ＧＩＳ对西双版纳勐养自......
In this paper, we present some new algorithms to reconstruct multivariate band-limited functionsfrom irregular sampled v......
Prevalent cohort studies frequently involve length-biased and right-censored data, a fact that has drawn considerable at......
During the start-up and unstable combustion periods,even the state-of-the-art incinerators emit polychlorinated dibenzo-......
Rare events such as nucleation processes are of ubiquitous importance in real systems.The most popular method for nonequ......
Space manipulator has been playing an increasingly important role in space exploration due to its flexibility and versat......
The sampling theorem is one of the most powerful results in signal analysis. In this paper, we study the average samplin......
The DFT transform us extended to DFTξη transform and the relationship between FT and DFTξη is given by the Fourier t......
Quantitative sampling,dilution and separation for high-level radiation solution must be in hot cell.Because of difficult......
Compressed sensing,a new area of signal processing rising in recent years,seeks to minimize the number of samples that i......
Objective To investigate the current status of disabled children and prevalence of disabilities in children aged 0-6 yea......
2019新型冠状病毒(2019 novel coronavirus,2019-nCoV)感染主要通过呼吸道飞沫传播、空气传播及接触传播,结合支气管镜操作的特点,......
互联网商品图像的属性分类是人工智能领域的重要研究课题之一,针对商品图像属性分布不平衡以及不同属性间存在相关性等问题,该文以......
该文从挂篮荷载计算、施工流程、支座及临时固结施工、挂篮安装及试验、合拢段施工、模板制作安装、钢筋安装、混凝土的浇筑及养生......
研究晶状体疾病的实验方法有多种,在离体实验中,除了晶状体上皮细胞培养外,晶状体组织培养作为一种评价疾病发病风险和探讨病因的......
对目前流行的面光源实时绘制算法进行综述。首先对面光源从相对距离、形状、光强分布和动态性四个方面进行分类,分析各类面光源的......
为提高跳频信号接收系统的解调处理性能,提出基于迭代双稳态随机共振的数字化接收算法。该算法通过数字化的样点筛选过程实现单一......
在尿素产品的各项指标进行检测时,要严格执行国家标准和操作规程,通过全面贯彻质量检测管理体系,来提高尿素产品检验的有效性。介......
This paper studies optimal shape design of pressure vessel head subject to internal uniform pressure.The optimization ai......
Digital Holography (DH) has brought a new impetus to the field of holography. The fields of imaging, microscopy and metr......
目的探讨淋巴结取材方法对胃癌淋巴结检查数目及分期的影响。方法 36例接受根治性切除手术的进展期胃癌病例,根据淋巴结取材方法分......
目的：探寻新生儿重症监护室医务人员手消毒效果监测一种新的采样方法。方法：用浸有含相应中和剂的无菌洗脱液的4cm*5cm 无菌湿纱布平......
A generalization of frame perturbation in Hilbert subspaces and its application to wavelet subspaces
A perturbation theorem for frames in a Hilbert space is obtained, which is a generalization of a result by Christensen.......
为探究吕家坨井田地质构造格局,根据钻孔勘探资料,采用分形理论和趋势面分析方法,研究了井田7......
为了解决井筒揭煤期间井下取芯管取煤样掉钻、卡钻等无法取芯的问题，经过现场试验可以利用高压水返渣取煤样代替取芯管取芯测定煤层......
目的：改进薄荷桉油片（I）中薄荷脑鉴别方法。方法：采用石油醚（60～90℃）提取样品中薄荷脑，以甲苯-醋酸乙酯（19∶1）为展开剂。结果：按上述方法分......
In this paper, we present a hybrid representation of image-based models combining the textured planes and the hierarchic......
目的:建立设备表面度他雄胺残留检查的高效液相色谱法。方法:用棉签擦拭设备表面,采用Phenomenex C18(250mm×4.6 mm,5μm)色谱柱,......
Numerous scientific challenges arise when designing a soil monitoring network (SMN),especially when assessing large area......
ASH9000大气水分采样器是基于半导体冷阱来冷冻捕集大气中水分的设备,其主要由半导体冷阱、气泵、质量流量计、收集瓶、阀门及连通......
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针对扩展审计博弈的不足及策略信息的不确定性,将审计博弈与统计抽样结合起来,研究不确定条件下,扩展审计博弈的扩展成本与利益转......
Suboptimal alignments always reveal additional interesting biological features and have been successfully used to inform......
Digital Holography (DH) has brought a new impetus to the field of holography. The fields of imaging, microscopy and metr......
为了实现缩短出钢时间从而提高碱性氧气转炉(BOF)的生产效率,与熔融分析控制相关的过程如停吹、提枪或倾炉都要避免.为了达到这个......
为了实时、准确地估计矿用电池SOC值,通过采用加权统计线性回归法实现模型函数线性化,将采样点卡尔曼滤波技术应用到矿用电池SOC估......
分子自动对接技术在过去二十年里取得很大发展和成功,但是仍然面对如何处理分子柔性这样一个难题.这篇综述概要介绍分子柔性对接技......
Field experiments were conducted on total load transport in the Chelichay River Basin,a mountainous catchment (1,400 km~......
This paper presents an investigation on strength of cement deep mixing (CDM) mixture. Four typical works of offshore or ......
Non-parametric machine learning methods for interpolation of spatially varying non-stationary and no
Spatial interpolation has been frequently encountered in earth sciences and engineering.A reasonable appraisal of subsur......
目的研究全血及成分血质量抽检结果趋势及分析不合格原因。方法对2017年、2018年、2019年期间全血及成分血的质量抽检结果趋势进行......
从18CrNiMo7-6钢轮轴锻件不同部位取样并进行了质量检验,检测项目包括力学性能、显微组织、端淬曲线、化学成分、气体含量和非金属......
为探究采用不同原理的颗粒物采样器在燃煤电厂超低排放设施PM10及PM2.5检测中的结果差异,基于颗粒物采样实验验证模拟系统及全自动......
