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Abstract: An algorithm is presented for better legal solution in detailed placement of large scale mixed macros and standard cells IC design.Due to the limitation of computing complexity,an effective and efficient initial placement is very important for d
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文摘:以大规模混合模式布局问题为背景,提出了有效的初始详细布局算法.在大规模混合模式布局问题中,由于受到计算复杂性的限制,有效的初始布局算法显得非常重要.该算法采用网络流方法来满足行容量约束,采用线性布局策略解决单元重叠问题.同时,为解决大规模设计问题,整体上采用分治策略和简化策略,有效地控制问题的规模,以时间开销的少量增加换取线长的明显改善.实验结果表明该算法能够取得比较好的效果,平均比PAFLO算法有16％的线长改善,而CPU计算时间只有少量增加. |
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Abstract: An algorithm of minimizing the number of buffers under certain delay constraint with accurate delay models is presented.Given a two-terminal net,the algorithm can minimize the total number of buffers inserted to meet the delay constraint.A high
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文摘:提出了在精确时延模型下,满足时延约束的缓冲器数目最小化的算法.给出一个两端线网,该算法可以求出满足时延约束的最小缓冲器数目.运用高阶时延模型计算互连线的时延,运用基于查找表的非线性时延模型计算缓冲器的时延.实验结果证明此算法有效地优化了缓冲器插入数目和线网的时延,在二者之间取得了较好的折中.算法的运行时间也是令人满意的. |
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Abstract: An algorithm to resolve the coupling effect problem is proposed during the cross point assignment (CPA) stage.In the algorithm,the priority queue concept and the rip-up and reroute strategy are combined to control crosstalk noise caused by inter
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文摘:提出了一种在过点分配阶段解决噪声耦合效应问题的算法.该算法采用优先队列同拆线重布策略相结合的方法,控制由互连线耦合电容引起的串扰噪声.算法中,首先按照线长和约束限制,将线网划分到若干个优先队列中.然后,将每个优先队列的过点分配问题转换为线性分配问题.在完成一个线网队列的分配后,通过过点分配后处理过程检查串扰约束满足情况,对违反约束的线网对进行拆除,放入后续线网队列进行重新分配.实验数据表明,该算法能够取得好的效果. |
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Abstract: An antifreezing ventilation system at winter in a gold mine is designed by use of the earth temperature preheating technology.
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文摘:利用地温预热入风流技术，设计了金厂沟梁金矿冬季防冻通风系统。 |
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Abstract: An economic method by which SO2 in a flue gas can be removed using the alkaline matters in bolder water from an industrial boiler house is introduced briefly.
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文摘:简要介绍了工业锅炉房利用锅炉水中的碱性物质除去烟气中SO2的经济方法。 |
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Abstract: An efficient parallel global router using random optimization that is independent of net ordering is roposed.Parallel approaches are described and strategies guaranteeing the routing quality are discussed.The wire length model is implemented on
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文摘:设计实现了一个高效的线长模式下基于多处理机的并行总体布线器.通过对非时延驱动模式下串、并行算法的总运行时间和求解时间的比较,表明该并行算法能够在保证求解质量无明显变化的前提下大大加快总体布线算法的求解速度.同时,也提出了基于分布式体系结构的并行总体布线算法. |
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Abstract: An efficient partitioning algorithm for mixed-mode placement,extended-MFFC-based partitioning,is presented.It combines the bottom-up clustering and the top-down partitioning together.To do this,designers can not only cluster cells considering lo
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文摘:提出一种专用于带有预设计模块的混合模式布局的划分算法.它基于扩展的MFFC结群算法,结合自下而上的结群和自上而下的划分为一体进行混和模式下的划分.这样不仅可以使划分能够考虑电路本身的逻辑依赖,而且可以得到很好的最小割划分结果.实验结果表明,这种划分算法在层次式混合模式布局流程里起到了显著的作用.将此算法和当今国际上著名的划分包HMETIS进行比较,结果表明此算法有一定的优势. |
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Abstract: An evaluation method of the color difference of new coordinate in half-toning dot printing on fabrics with primary dyes is introduced in this paper.A new mathematical model of the new coordinate color difference is built, tested and verified.The
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文摘:提出了一种用于原色染料网目阶调印花中的新坐标色差评价方法.建立了新坐标色差评价的数学模型,并用实验进行了验证.该方法能准确计算色相差和彩度差,从而保证了阶调印花质量. |
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Abstract: An evaluation technique, based on ultrasonic characteristics in time domain, by which several Cscan images in depths of a material tested can be obtained by once-through scanning, has been presented.
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文摘:介绍一种基于超声传播时域特性的深度方向超声C扫描成象检测技术，一次扫描可以同时获取被测材料结构内部若干层的扫描检测图象。 |
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Abstract: An experimental method for preparing respirable dust filter samples using a selfmade standard dust generator was introduced.
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文摘:介绍了自制的标准呼吸性粉尘发生装置制备含石英呼吸性粉尘滤膜样品的实验方法。 |
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Abstract: An identification model of taste signals is developed based on fuzzy neural networks.The data compression and feature extraction of the sampled taste signals obtained using taste sensors are implemented employing wavelet transformation.Fuzzy neu
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文摘:文中提出了一种基于模糊神经网络方法的味觉信号识别模型，利用小波变换实现了对传感器所采集的味觉信号进行数据压缩及特征抽取，以模糊神经网络作为味觉信号的识别工具，并利用遗传算法训练网络权值、优化隶属度函数.文中实现了对酸、甜复合味觉信号的数据处理和模糊识别.实验结果表明了将模糊神经网络引入到味觉信号模糊识别的可行性和有效性. |
