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传感器网络
传感器网络由大量能量有限的微型传感器节点组成.因此,如何保证在足够覆盖监测区域的同时延长网络的寿命,是一个需要解决的重要问题.为了达到这一目标,一种广泛采用的策略是选出部分能够足够覆盖监测区域的节点作为工作节点,同时关闭其他冗余节点.提出了一个数学模型,使得只要已知监测范围和节点感知半径的比值,就可以计算出达到服务质量期望所需要的节点数量.需要指出的是:与大部分研究覆盖的文献不同,该研究不基于节点的位置信息,因此可以极大地降低硬件成本,并且减少节点获得和维护位置信息的开销.模拟实验结果表明:在随机部署条件下,服务质量期望与实验所得到的实际覆盖度的误差不大于服务质量期望的2％ 而对于相同的服务质量期望和实际覆盖度,计算所得的工作节点数量与实验所得的工作节点数量的误差小于计算数量的5％,这表明推导出的节点数量与服务质量期望之间的关系与模拟实验的结果相吻合.该结果可以广泛应用于传感器网络的节点部署、拓扑控制等领域中.()
- 2008-03-22 23:09:53下载
- 积分：1
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High
This paper presents a clustering approach
which estimates the specific subspace and the intrinsic dimension of each class. Our approach
adapts the Gaussian mixture model framework to high-dimensional data and estimates
the parameters which best fit the data. We obtain a robust clustering method called High-
Dimensional Data Clustering (HDDC). We apply HDDC to locate objects in natural images
in a probabilistic framework. Experiments on a recently proposed database demonstrate the
effectiveness of our clustering method for category localization.
- 2009-06-22 12:49:53下载
- 积分：1
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3
说明： 电池热失控与热安全保证技术论文仿真实验验证对比分析的(Battery thermal runaway comparative analysis and thermal safety assurance of technical papers simulation experiment)
- 2017-04-03 19:52:36下载
- 积分：1
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Frequency
频偏同步，可以实现大频偏下的频偏估计，精度高，范围广！(Frequency offset synchronization can be achieved under large frequency offset offset estimation, high accuracy and wide!)
- 2010-03-15 01:31:44下载
- 积分：1
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hppv_p3_t1_hudson
德国一家公司介绍光伏逆变器低电压穿越的资料，通过实例进行讲解(German company introduced low-voltage across the PV inverter data, to explain by example)
- 2011-09-15 09:35:22下载
- 积分：1
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DOA-mode-space-smooth
基于模式空间的均匀圆阵方位估计性能研究，在建立了均匀圆阵数学模型的基础上，将模式空间与经典高分辨方位估计算法———多重信号分类法（MUSIC）
应用到均匀圆阵方位估计（DOA）中(Based on the pattern space DOA estimation with uniform circular arrays properties, in the establishment of a uniform circular array based on the mathematical model, the model space high resolution DOA estimation algorithm with the classic--- multiple signal classification (MUSIC) direction applied to the uniform circular array estimation (DOA) in)
- 2011-05-10 23:48:33下载
- 积分：1
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DataDemon--time-frequency-analysis-
DataDemon-时频分析解决方案
随着科技迅速发展，讯号分析处理者面临的是日趋庞大的计算数据量，和越来越复杂的仿真模式。如何缩短开发时间、节省研究经费、又能实现高效能、高弹性的运算平台供后续研究使用便越来越重要。
DynaDx提出DataDemon-时频分析解决方案，以组件组合的设计概念，免除繁杂程序写作方式，提供讯号处理的可视化控制组件，让处理讯号分析的过程就像拼组模型一般，使用者可依据自己的构想去组合出更多元之讯号分析呈现。不再需要从头撰写繁杂的程序代码便能使用各种讯号处理的算法，也不必将时间花在除错、评估程序运行效能，而能专注于研究目标的分析及后续应用的开发上。
(DataDemon-time-frequency analysis solutions With the rapid development of science and technology, signal analysis and processing is increasingly faced by the huge amount of data calculation, and increasingly complex simulation models. How to reduce development time, save research funding, but also to achieve high performance, flexible computing platform for subsequent research use have become increasingly important. DynaDx DataDemon-time frequency analysis proposed solutions to the design concept of component combinations, eliminating the complicated procedures written in a way to provide a visual signal processing control unit, so that the signal processing analysis process as spelled group of models in general, users can be based on their own idea to mix the signal out more element analysis presented. No longer need to write complicated code from scratch, will be able to use a variety of signal processing algorithms, nor do you have time to spend debugging, performance evaluation pro)
- 2021-04-04 19:29:04下载
- 积分：1
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smart grid
说明： A document file talking bout smart grid
- 2020-04-26 05:35:15下载
- 积分：1
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jaifanghangyefenxi
2012-2016年中国家纺行业市场分析与投资前景预测报告(Chinese textile industry market analysis and investment outlook report 2012-2016)
- 2012-12-15 00:14:20下载
- 积分：1
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SMPTE_AFD_s2016-1-2007
SMPTE Standard AFD Description
- 2009-06-19 21:42:34下载
- 积分：1
