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Based on the foregoing strategy, we choose Inverse Modified Discrete Cosine Transform and Polyphase Synthesis Filterband of the MP3 decoder by an ASIC implementation. Moreover, to further reduce the hardware cost, we use CORDIC-based calculations and merging some arithmetic operations to replace the original ones of IMDCT and PSF.
基於前述的原则及由运算量的统计分析,我们选定「反转修正式离散余弦转换(Inverse Modified Discrete Cosine Transform, IMDCT)」与「多相位合成滤波频带(Polyphase Synthesis Filterband, PSF)」使用ASIC方式实现,同时为了有效降低这两个模组的硬体成本,我们导入「座标轴旋转数位计算机」及合并运算方式取代原始算术运算,使得新的计算式有效降低原IMDCT约74%之乘法及约49%加法运算,而在多相位合成滤波频带的反离散余弦转换也有降低约33.4%之乘法及约24.6%之加法运算。
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The research of both theories and practices of gridding in the dissertation shows that: Linear interpolation based on triangulation is simple computationally and fast, but its gridding results isn't smooth and its precision is low; Multiquardric method is also simple computationally with high precision and good effect, but its gridding is slow because it is based on global calculation; Minimum curvature method is fast with high precision and good effect, but its gridding quickly degrades over areas with sparse data control when grid spacing smaller than the actual grid spacing is used; Ordinary Kriging method is high-precision, but its gridding is slow because of large calculation; Inverse interpolation is a computationally fast, efficient and robust method with high accuracy and perfect effect, and its gridding results of different gridding orientations are basically identical. Inverse interpolation is suitable for thegridding of geophysical irregular data, especially for large-scale geophysical irregular data.
本文的方法研究和数据试验分析表明:基于三角网的线性插值法计算简单,速度快,但其网格化结果不光滑,精度不够;多元二次函数法计算简单,网格化精度高,效果良好,但它是基于全局计算的,计算速度较慢;最小曲率法计算速度快,网格化精度高,效果良好,但其在稀疏控制点的网格化容易出现振荡现象;普通克里格法网格化精度高,效果良好,但其计算量较大,一般计算速度慢;反插值法网格化计算稳定,速度快,精度高,效果好,而且在网格化方向不同的情况下其网格化精度效果都达到基本一致,适合于地球物理不规则分布数据的网格化,特别是大规模地球物理不规则分布数据的网格化。
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Application of inverse filter in energy spectrum measuring;2. Time-varying MIMO channel tracking algorithm based on inverse filter .;3. Based on inverse filter ing technique, a method of rotating invariance matched filtering correlation recognition is proposed in this paper.
提出了用逆滤波器来进行旋转不变匹配滤波相关识别方法;采用级联变形滤波器可以实现透射匹配相关峰强度对透射输入能量的优化,大大改善相关峰的锐度,计算机模拟结果显示,对旋转图像,在平面内按 0°~ 32°旋转,每 4°取一灰度图像的旋转不变匹配滤波相关器,具有较好的相关不变识别性能,特别是目标图像在部分输入情况下也能较好地识
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Therefore, in order to offer reference to Readers, based on idempotent matrix, involutory matrix, nilpotent matrix, diagonal matrix, the main character of special matrix are proved in this paper after the Defined and algorithm of eigenvalue of matrix .for example , some problems of the eigenvalues of matrix are solved in a special method based on the eigenvalues of matrix .
为此, 本文除了介绍矩阵特征值的定义和算法外,还围绕幂等矩阵、幂零矩阵、对角矩阵、等特殊矩阵给出了其主要性质并加以证明,同时还介绍了一些特殊矩阵的特征值的算法,例如:本文利用矩阵的特征值,对与矩阵的特征值相关的一些典型问题给出了较好的处理方法。
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This paper introduces a FPGA based IP packet filter that can serve as the core of a hardware based Firewall.
文章着重介绍了基于FPGA的IP报文过滤处理模块设计,它是基于硬件防火墙的核心处理部分。
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Biology technique is based on appearance symptom on sweet potato or Ipomoea Setosa after they are infected to identify virus. But it need long period and is apt to be limited by season. Based on coat protein of virus, serology detects virus during peculiar immunolog...
生物学方法是依据病毒侵染后在甘薯或指示植物上的外观症状进行识别,但检测速度慢,易受季节限制;血清学技术是利用病毒外壳蛋白的抗原性,据特异性的抗体抗原免疫学反应检测病毒存在,但制备抗血清需时间长,对含量少和无蛋白外壳的病毒无法检测;分子生物学方法是以核酸为基础,通过检测病毒核酸来证实病毒的存在,该技术具有灵敏度高、特异性强、适应范围广等特点。
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System incentive and alternation of attacker's strategies are not taken into full consideration in current intrusion response research. An intrusion response model (intrusion response based on attack graph, IRAG) based on the attack graph is proposed to solve this problem.
针对当前入侵响应工作中存在的不能充分考虑系统的收益,以及不能充分考虑攻击者策略变化因素等问题,提出了一种基于攻击图的入侵响应IRAG(intrusion response based on attack graph)模型。
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An IRDS realization model, which combines the three-layer-structure computing model based on distributed object web with the diagnosis system construction model based on Agent, is proposed.
提出了一种融合基于分布对象Web计算的三层结构计算模型和基于Agent的诊断系统构造模型的IRDS实现模型。
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ABSTRACT The main contents and key techniques about remote diagnostic techniques based on Internet/Intranet and IRDS (Internet-based Remote Diagnostics System), are researched systematically in this dissertation through theoretical study and engineering practice.
本论文通过理论研究和工程实践,对新兴的基于Internet/Intranet的远程诊断系统IRDS(Internet-based Remote Diagnostics System)的主要研究内容和关键技术进行了深入系统的研究,研制了远程信号分析系统,建立了较完善的IRDS示范体系。
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All enhancers did not significantly change the transcorneal lag time of ENX. The irritancy of poloxamer and Azone was observed.? The results of in vitro release studies showed that the ENX gel based 3% HPMC K4M and 3%HPMC F4M povided sustained release of the drug over an 8-h period in vitro.Diffusion area has significantly effect on drug release, and pH value of medium and rotation rate have effcet on drug release.However, the diffusion shield has no effect on drug release. The P_ value of the preparation based on 3% HPMC F4M was 1.34-fold of conventional eye drops of ENX.
体外溶出度试验结果表明,以3%的HPMC K4M和F4M为基质制备的ENX凝胶剂的体外释放行为符合眼用缓释制剂的要求;体外释放度影响因素试验结果表明,释放面积对释放度有显著性影响,pH值和转速略有影响,而扩散屏障没有影响;离体角膜透过实验结果表明,以F4M为基质制备的凝胶剂中ENX的表观渗透系数P_(app是对照组的1.34倍,说明F4M与眼角膜的相容性较好,是一种理想的眼用制剂增稠剂,可以在眼用制剂中广泛采用。
- 相关中文对照歌词
- BasedGod Fucked My Bitches
- CNBFTBGB Based Freestyle
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- Everything Based
- Be Brave Welcome Home
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- Cashout On Me Based Freestyle
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- 推荐网络例句
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Many will continue to choose to live in duality and in conflict.
许多人将继续选择活在二元对立性和冲突中。
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I find that students of the University of Physical Education all wear sportswear at first sight.
我发现:体育大学的学生乍一看,都是穿运动衣,大家都一样
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I love singing, but I don't want to take it as my lifelong career.
我喜欢唱歌,但我还不愿意把它当作我的终身职业。