搜索结果: 1-15 共查到“知识库 SIR”相关记录41条 . 查询时间(0.082 秒)
传统结构地震易损性中结构地震响应指标对损伤反映不充分，且无法为结构震后可恢复性评估提供准确的初始损伤指标。针对上述不足和结构地震可恢复能力评估的需求，提出运用基于弹塑性耗能差的损伤指数进行结构地震易损性评价的方法。建立可推演出指定地震动强度和超越概率下的损伤指数的计算方法。利用SIR模型能够描述系统损伤和恢复动态演变过程的特点，提出基于该模型的单体建筑结构和区域建筑群的性能水平恢复函数模型及结构的...
Exploring Semantic Inter-class Relationships (SIR) for Zero-shot Action Recognition
Exploring Semantic Inter-class Relationships Zero-shot Action Recognition
2016/1/22
Automatically recognizing a large number of action cat-egories from videos is of significant importance for video understanding. Most existing works focused on the design of more discriminative featur...
随机SIR流行病模型解的渐近性态
It公式 Lyapunov函数 随机干扰 SIR模型 渐近行为
2018/10/8
研究了一类随机SIR流行病模型.构建合适的Lyapunov函数,利用It公式,得出了该模型正解的全局存在唯一性；在该结论的基础上,讨论了随机模型的无病平衡点的渐近行为.在一些条件下,得出随机模型解的上确极限的最大值.
The 34th Sir Frederick Bartlett Lecture The abstract representations in speech processing
Speech processing Phonemes Lexicon Representations
2015/4/3
Speech processing by human listeners derives meaning from acoustic input via intermediate steps involving abstract representations of what has been heard. Recent results from several lines of research...
BIOMASS ESTIMATION OF FOREST AND SAVANNA TRANSITION VEGETATION ZONE BY JERS-1 AND SIR-C BACKSCATTER DATA
Tropical Rain Forest Savanna Biomass Inventory Microwave Data Amazonia
2015/2/3
The inventory and monitoring of transition zones between tropical rain forest and savanna formations in Brazilian Amazonia are an essential step for an accurate analysis of global change and biodivers...
基于双层六边形SIR小型化LTCC宽带带通滤波器
双层SIR LTCC 带通滤波器
2014/6/19
本文利用双层六边形开环阶梯阻抗谐振器(Step Impedance Resonator, SIR)设计小型低温共烧陶瓷(Low Temperature Con-fired Ceramic, LTCC)滤波器，该滤波器是由四个双层六边形开环SIR集成在多层陶瓷介质中利用低阻抗部分耦合产生一个紧凑的尺寸微波滤波器，谐振器低阻抗部分开口端产生容性耦合目的是进一步降低谐振频率。所设计的电路尺寸为8.0 ×...
A model of commodity prices after Sir Arthur Lewis
Sir Arthur Lewis World income Cointegration
2014/3/24
We develop an idea from Arthur Lewis’ paper on unlimited supplies of labor to model the longrun behavior of the prices of primary commodity produced by poor countries. Commodity supply is
assumed inf...
网络上SIR型传播的随机建模与极限定理
密度依赖群体过程 收敛速度 一致收敛 ssize L1收敛
2013/10/18
复杂网络本身及其上的传播过程是最近以来的研究热门,但是多数的工作都只有宏观模型,没有微观基础.本文中,我们将边与边之间的连接与个体的状态变化看作为基本的泊松流,从微观角度构造了网络上SIR型传播的随机模型. 对任意有限的固定时间区间, 在热力学极限下,从随机系统可以得到一个确定性动力系统---所谓的“水动力极限”.这样,本文为这一领域的唯象的动力学模型建立了一个合理的微观基础.同时,我们得到了收敛...
工程材料的单轴应力-应变全曲线反映了材料最基本的本构关系，但目前对适用于多种材料的统一本构关系研究尚不够深入。本文基于传染病传播动力学SIR模型，建立了反映材料单元动态变化的应力-应变模型。根据同伦分析方法提出了模型的解析解和近似解，并讨论了模型反映材料尺寸效应和应变率的能力。结果表明，本文提出的单轴应力-应变模型中的参数可以与实际材料的力学特性相对应，模型解能够统一、全面、准确地反映多种材料力学...
基于BB-SIR方法的结肠癌特征基因提取
特征基因 结肠癌 BB-SIR
2011/11/9
结合复杂数据分析(Complex Data Analysis)理论和充分降维的思想，本文在有效提取结肠癌特征基因研究的基础上，建立结肠癌特征基因提取的BB-SIR模型。该模型方法简洁易懂且有较高的识别率。本文依据BB-SIR模型和所给数据找到了两个结肠癌亚型，并确定了该亚型的特征基因。实验结果表明，BB-SIR方法选出的特征基因能够识别出结肠癌亚型，并且识别正确率达到96%以上。
Distributed SIR-Aware Scheduling in Large-Scale Wireless Networks
Distributed SIR-Aware Large-Scale Wireless Networks Information Theory
2011/8/31
Abstract: Opportunistic scheduling and routing can in principle greatly increase the throughput of decentralized wireless networks, but to be practical they must do so with small amounts of timely sid...
SIR epidemics on a scale-free spatial nested modular network with a non-trivial threshold
Epidemics SIR Reed-Frost percolation long-range directed scale-free modular nested communities hierarchical
2011/8/30
Abstract: We propose a class of random scale-free spatial networks with nested community structures and analyze Reed-Frost epidemics with community related independent transmissions. We show that the ...
一类SIR流行病数学模型稳定性的讨论
传染病 传染病平衡点 局部稳定性 全局稳定性
2012/11/23
介绍了一类SIR流行病数学模型，并对其平衡点的局部和全局稳定性进行了讨论.
Charles Darwin and Sir John F. W. Herschel: Nineteenth-Century Science and its Methodology
Charles Darwin John F. W. Herschel William Whewell vera causa analogy consilience
2011/9/7
In this essay, I review the relationship between Charles Darwin's methodology and the philosophy of science of Sir John F. W. Herschel. Darwin's exposure to Herschel's philosophy was, I argue, signifi...
Charles Darwin and Sir John F. W. Herschel: Nineteenth-Century Science and its Methodology
Charles Darwin John F. W. Herschel William Whewell vera causa analogy consilience
2011/9/8
In this essay, I review the relationship between Charles Darwin's methodology and the philosophy of science of Sir John F. W. Herschel. Darwin's exposure to Herschel's philosophy was, I argue, signifi...