盖茨比+宇宙 此仓库包含一个示例博客网站，该网站由和构建。 使用 先决条件 节点（我建议使用v8.2.0或更高版本） 安装 # Make sure that you have the Gatsby CLI program installed npm install --global gatsby-cli # run from your CLI gatsby new gatsby-example-blog https://github.com/cosmicjs/gatsby-blog-cosmicjs 在gatsby-config.js您需要为Cosmic Bucket添加配置 { resolve : 'gatsby-source-cosmicjs' , options : { bucketSlug : '' , /* Find this in Your Bucket >

A novel antipodal Vivaldi antenna with tapering serrated structure at the edges is proposed. Compared with traditional Vivaldi antennas without serrated structure, the gain of the designed antenna is significantly improved in the desired frequency band (4.5- 7.5 GHz). In addition, a 2 x 2 Vivaldi antenna array with an orthorhombic structure is designed and fabricated to achieve a circular polarization (CP) characteristic. With this configuration, the 3 dB axial ratio bandwidth of the array reach

飞秒激光湿法刻蚀和微固态技术在石英玻璃中制造3D螺线管微线圈

DBSCAN是一种经典的基于密度的聚类技术，在发现任意形状的聚类和处理噪声方面广为人知。 但是，面对高维数据时，密度计算非常耗时，这使得它在许多领域都效率低下，例如多文档摘要，产品推荐等。因此，如何有效地计算高维数据的密度成为了基于DBSCAN的群集技术的一个关键问题。 在本文中，我们提出了一种基于DBSCAN的高维数据聚类的快速算法，称为Dboost。 在我们的算法中，一种名为WAND＃的分级检索技术改编被新颖地应用于改进密度计算而没有精度损失，并且我们通过减少WAND＃的调用时间来进一步提高了这种加速。 对电线电压数据，Netflix数据集和微博语料库进行了实验。 结果表明，线电压数据和Netflix数据集可实现50倍以上的加速，而微博客数据可望实现100倍以上的加速。

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Traditional speckle fringe patterns of electronic speckle pattern interferometry (ESPI) are obtained by adding, subtracting, or multiplying the speckle patterns recorded before and after the deformation. However, these speckle fringe patterns are of limited visibility, especially for addition and multiplication fringe patterns. We propose a novel method to obtain speckle fringe patterns of ESPI from undeformed and deformed speckle patterns. The fringe pattern generated by our method is of high c

A 1.3-\mu m wavelength vertical-mesa ridge waveguide mulitple-quantum-well (MQW) distributed feedback (DFB) laser with high directly modulated bandwidth and wide operation temperature range is reported. With the optimization of the strained-layer MQWs in the active region, the surrounding graded-index separated-confinement-heterostructure waveguide layers, together with the optimization of the detuning and coupling coefficient of the DFB grating, high directly modulation bandwidth of 16 GHz at r

A high repetition rate Tm:Ho:LuLiF master-oscillator and polarization-maintaining (PM) Tm-doped fiber power-amplifier system is presented. A 11.3-kHz, 0.4-nm line width, 0.89-W Tm:Ho:LuLiF seed laser is developed. Using a two-stage PM Tm-doped fiber power amplifier system, 32.4-W output power is obtained with 0.4-nm line width at a central wavelength of 2058.5 nm, corresponding to 0.66-W seed laser. The laser spectrum and pulse profile are measured.