quadrat相关论文
A fully integrated low power RF transmitter for a WiMedia 3.1-4.8 GHz multiband orthogonal frequency division multiplexi......
A study on the protection of biodiversity resources in Micangshan Forest Park in northeast of Sichua
The Micangshan Forest Park is located in the northeast edge of the Sichuan Basin. The wild animals and plants resources ......
Structure and regeneration status of Komto Afromontane moist forest, East Wollega Zone, west Ethiopi
We conducted a study in Komto Forest in East Wollega Zone, Oromia National Regional State, West Ethiopia for determining......
Spatial variation in community structure of a subtropical evergreen broad-leaved forest:Implications
With the full survey data for a 24-ha subtropical evergreen broad-leaved forest dynamics plot,we evaluated spatial varia......
This paper presents a millimeter wave(mm-wave) oscillator that generates signal at 36.56 GHz. The mm-wave oscillator is ......
Coral cover as a proxy of disturbance:A case study of the biodiversity of the hermatypic corals in Y
The Yongxing Island is the biggest island of Xisha Islands in the middle part of the South China Sea. It occupies 1.8 sq......
Diversity,population structure and regeneration status of arboreal species in the four sacred groves
Assessment of tree species diversity, structure and regeneration status of four sacred groves of Kushalnagar,southern Ka......
Woody plant diversity,structure and regeneration in the Ambo State Forest,South Gondar Zone,Northwes
For this study in the Ambo State Forest on woody plant diversity, structure and regeneration, 70 quadrats, each 25 m by ......
An optimization model is constructed to formulate the maximization problem on the capacity of V-belt drive. The concavit......
In order that the mechanism designed meets the requirements of kinematics with optimal dynamics behaviors, a quadratic o......
Vegetation of Mangroves: Spatial and Temporal Pattern of its Dominant Populations in Futian National
The community characteristics of mangroves in the Futian Nature Reserve, Shenzhen, China are given based on surveying of......
Broadcast delivery of bulk multimedia files is an important wireless LAN application for densely populated scenarios suc......
Compressed sensing-based time-domain channel estimator for full-duplex OFDM systems with IQ-imbalanc
In full-duplex orthogonal frequency-division multiplexing(OFDM) systems with in-phase and quadrature(IQ) imbalances, a t......
Investigation Report on Vitex trifolia L. var. simplicifolia Cham. Medicinal Plant Resources in Chin
[Objective]To investigate the resources situation of Vitex trifolia L. var. simplicifolia Cham. in China in order to pro......
The first part of this article develops [1] a closed universe model deploying by identical multiplication a Friedmann-Pl......
关于丢番图方程x3士1=1267y2的初等解法至今仍未解决.主要利用递归序列、同余式、平方剩余、Pell方程的解的性质、Maple小程序,证......
研究了有限域F2n上一类二次函数F(x)=x22t+1+x2t+1的密码学性质,其中gcd(n,t)=1.基于有限域上线性化多项式和二次型的理论,确定了F......
低差分一致性函数在代数几何、组合学以及密码编码理论中都有广泛的应用.证明了奇特征域中两类形如uxd1+ xd2的低差分一致性二项式......
针对当前粒子滤波权值退化问题以及精度与时耗的矛盾,提出了一种新的高精度自适应粒子滤波算法。该算法综合考虑优选建议分布函数......
ＢＵＣＫＬＩＮＧＡＮＡＬＹＳＩＳＯＦＰＯＬＡＲＯＲＴＨＯＴＲＯＰＩＣＡＮＮＵＬＡＲＰＬＡＴＥＳＵＮＤＥＲＵＮＩＦＯＲＭＰＲＥＳＳＵＲＥＳＹｏｕＲｅｎｃｈａｎ；ＷａｎｇＹｏｎｇｌｉａｎｇ；ＷａｎｇＸｉｎｗｅｉ（ＤｅｐａｒｔｍｅｎｔｏｆＡｉｒｃｒａｆｔＥ.........
根据枫香１ａ生苗３个群体２６个样方的调查资料，探讨了枫香育苗造柯中亟待规范的苗木规格问题，并按多因素综合衡量的原则，提出黄山地区枫香１ａ生苗......
采用植被样方法对九龙山自然保护区的常绿阔叶林进行了调查研究.按照<中国植被>分类原则,九龙山常绿阔叶林可划分为青冈林、栲林、......
求解多准则分类决策问题,虽有很多方法,但均存在一些不足.为此,提出了一种准则权系数不完全信息下的非线性多准则层次分类方法,该......
Thondaimanaru lagoon (TL) is one of the three lagoons in the Jaffna Peninsula, Sri Lanka. TL (N-9.819584, E-80.134086), ......
针对舰载机着舰过程中舰尾流扰动引发的航迹跟踪精度下降问题,设计了有效抑制舰尾流的纵向自动着舰引导律。以F/A-18舰载机为研究......
[目的]探究山东省卫生人力资源供给状况,为区域卫生人力资源供需平衡提供规划依据。[方法]采用时间序列模型、灰色预测模型、二次......
Structure and regeneration status of mangrove patches along the estuarine and coastal stretches of K
This study presents the structural characteristics and regeneration potential of mangrove patches in the estuarine and c......
耦合谐振子是量子光学中的重要问题之一，许多实际物理问题的解决都依赖于耦合谐振子的模型，因此研究耦合谐振子求解的简便方法显得十......
本文目的是介绍局部模型回归分析的概念、作用以及如何用软件实现计算的方法。先介绍有关的基本概念,再介绍基本原理,最后通过一个......
介绍了基于MEMS技术的磁悬浮转子微陀螺的基本原理，重点对旋转的原理进行讨论，给出相应实现方案的指标分析和系统设计，并进行了实验。......
研究了一类含不确定性系统的鲁棒控制问题，在前人的基础上，提出了一种更广泛意义下的匹配条件，并在此匹配条件下设计了鲁棒控制器，基鲁......
采用二因素最优回归计计分析方法,对小麦新品种周8826和郑州79201最佳播期与播量进行了研究。结果表明,周8826和郑州79201的最佳播......
<正> 甲部 1.(a) 下列资料为温度对酶化作用速率之效应: 温度(℃) 生成物形成之速率(mg/min) 5 0.3 15 1.9 25 2.0 35 3.3 45 3.6 ......
利用二次推断函数的思想,以一系列基矩阵的线性组合来逼近工作相关矩阵,建立了纵向数据变系数模型的核权二次推断函数（QIF）,基于此得......
设D为奇素数，运用同余式、平方剩余等初等方法得出了Diophantine方程x3-53=Dy2无正整数解的一个充分条件。......
约束变尺度法是一个有效地求解约束问题的最优化方法，但对实际工程中存在的诸如函数不可导及函数求值复杂等非理想情况，求解尚有不少......
提出了时域有限元法（TDFEM）的一种新的基函数—二次B-spline时域基函数.首先简述了时域有限元法的原理和基本公式;然后提出了新型的......
论述了有收益约束条件的股指债指生成综合指数的投资组合跟踪问题，给出了在最小均方误差意义下追踪组合的解，证明了最优跟踪误差是收......
级联素数码是由素数码序列时移、频移后级联尝试性构造的一类跳频序列族,具有理想的汉明自相关特性和几乎理想的汉明互相关特性。......
主要用偏最小二乘(PLS)方法和二次判别分析(QDA)有监督分类的方法来对基因芯片(微阵列)数据进行分析.PLS是一种提取海量的数据有效......
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基于ANSYS平台的二次开发，针对桁架结构几何大变形分析问题提出了一种有效的数值算法。主要思路为：采用两步交替迭代逐步逼近，使平衡......
采用简单迭代法解二维稳态 Navier-Stokes问题的非线性边界积分方程组 ,迭代的每一步皆归结于解非齐次 Stokes问题的边界积分方程......
为了解决零中频接收机中射频链路正交下变频两路本振信号固有的相位不完全正交、幅度不完全一致特性对接收机解调性能的影响,本文......
提出了求积法解稳态问题的混合边界积分方程,它拥有高精度,低复杂度.通过并行地解粗网格上的离散方程,根据误差的多参数渐近展开,......
用谐波分析法进行介损测量时,很容易受到系统频率波动的影响,从而降低测量的准确度.本文在分析该算法误差机理的基础上得出了频率......
The notion of preordering, which is a generalization of the notion of ordering, has been introduced by Serre. On the oth......
In this paper, new complex band pass filter architecture for continuous time complex band pass sigma delta modulator is ......
本文提出一种彩色图像序列中的人脸跟踪方法。本文所提出的跟踪模式包括失脸肤色模型及运动模型。在人脸肤色模型中，首先将图像的ＲＧＢ空......
