全球抗灾能力ND-GAIN指数排名
全球抗灾能力ND-GAIN指数排名 作者:付辉适应能力适应指数圣母大学气候变化自然灾害弱势群体公共部门 摘要:圣母大学全球适应指数(Notre Dame Global Adaptation Index,ND-GAIN)是一个新兴的、国家层面的、用于预测预防气候变化问题的领先指标。自1995年起,美国圣母大学(University of Notre Dame)每年都会根据各国抵御自然...
ND-GAIN评价模型脆弱性雷达图河南省借鉴美国圣母大学全球气候适应指数(ND-GAIN)评价模型,采用熵权法确定各因子权重,构建河南省农业抗灾能力指标评价体系和模型,分别从脆弱程度和准备程度两个方面对河南省农业抗灾能力进行了分析,探讨了河南省18个地市2010—2018年农业抗灾能力的强弱演化,空间分布特征以及主要影响因素,并...
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Input DATASETS ndgain-country-index Tags Earth and NatureEnvironmentWeather and ClimateExploratory Data AnalysisGeospatial AnalysisData Visualization Language Rmarkdown License This Notebook has been released under the Apache 2.0 open source license. Continue exploring Input1 file arrow_right_alt Output0 ...
用汽车来做比喻的话,顺时针旋转Gain或者Trim旋钮,并不会给电路加入更多汽油,实际上更像是松开了刹车(更少负反馈)。最后,在Yamaha的设备的命名上,这种放大电路元件和控制增益的旋钮通常会被叫做Headamp,在设备上标记成HA。这是因为在音频系统中,这种放大电路处...
Nd:glass: various glasses, mostly silicates and phosphates; often used for neodymium-doped optical fibers, e.g. in fiber lasers and amplifiers (→ laser glasses) Less common neodymium-doped gain media are: Nd:GdVO4 (gadolinium vanadate) for 1064 and 1341 nm: similar to Nd:YVO4, but having...
Gain in polycrystalline Nd-doped alumina: leveraging length scales to create a new class of high-energy, short pulse, tunable laser materialsWe report a method for the synthesis and processing of transparent bulk polycrystalline yttrium aluminum garnet (YAG) and photoluminescent Ce-doped YAG ceramics...
A master oscillator power amplifier (MOPA) Nd:YVO4 laser with a controllable gain distribution was built up in our experiment. With the gain guiding effects, the final beam quality of the MOPA system with two amplification stages was near-diffraction-limited (M-2 approximate to 1.2) compared wi...
Maintaining broadband gain in a Nd3+/Yb3+co-doped silica fiber amplifier via dual-laser pumping Lin Z,Wang F,Wang M,... - 《Optics Letters》 - 2018 - 被引量: 0 Broadband-gain Nd 3+-doped Ba(Zr, Mg, Ta)O 3 ceramic lasers...