This paper presents a new routing strategy by introducing a tunable parameter into the minimum information path routing strategy we proposed previously. It is found that network transmission capacity can be considerab...This paper presents a new routing strategy by introducing a tunable parameter into the minimum information path routing strategy we proposed previously. It is found that network transmission capacity can be considerably enhanced by adjusting the parameter with various allocations of node capability for packet delivery. Moreover, the proposed routing strategy provides a traffic load distribution which can better match the allocation of node capability than that of traditional efficient routing strategies, leading to a network with improved transmission performance. This routing strategy, without deviating from the shortest-path routing strategy in the length of paths too much, produces improved performance indexes such as critical generating rate, average length of paths and average search information.展开更多
The effects of stage numbers on power dissipation of pipeline analog-to-digital converter （ADC） are studied and a novel design method aiming for power optimization is presented. In this method, a minimum comparator ...The effects of stage numbers on power dissipation of pipeline analog-to-digital converter （ADC） are studied and a novel design method aiming for power optimization is presented. In this method, a minimum comparator number algorithm （MCNA） is first introduced, and then the optimum distribution of resolutions through pipeline ADC stages is deduced by MCNA. Based on the optimum stage-resolution distribution, an optimization method is established, which examines the precise function between ADC power and stage resolutions with a parameter of power ratio （Rp）. For 10-bit pipeline ADC with scaling down technology, the simulation results by using MATLAB CAD tools show that an eight-stage topology with 1-bit RSD correction achieves the power optimization indicated by the power reduction ratio.展开更多
In optical techniques,noise signal is a classical problem in medical image processing.Recently,there has been considerable interest in using the wavelet transform with Bayesian estimation as a powerful tool for recove...In optical techniques,noise signal is a classical problem in medical image processing.Recently,there has been considerable interest in using the wavelet transform with Bayesian estimation as a powerful tool for recovering image from noisy data.In wavelet domain,if Bayesian estimator is used for denoising problem,the solution requires a prior knowledge about the distribution of wavelet coeffcients.Indeed,wavelet coeffcients might be better modeled by super Gaussian density.The super Gaussian density can be generated by Gaussian scale mixture(GSM).So,we present new minimum mean square error(MMSE)estimator for spherically-contoured GSM with Maxwell distribution in additive white Gaussian noise(AWGN).We compare our proposed method to current state-of-the-art method applied on standard test image and we quantify achieved performance improvement.展开更多
A new approach is demonstrated in which soft experimentation can be performed for MMP measurements, thus replacing the common practice of slim tube displacement laboratory experiments. Recovery potential from oil rese...A new approach is demonstrated in which soft experimentation can be performed for MMP measurements, thus replacing the common practice of slim tube displacement laboratory experiments. Recovery potential from oil reservoirs by miscible flue gas injection was studied by slim tube and field-scale numerical simulation using two flue gases and seven crude oils sampled at different depths in three candidate reservoirs. The soft experimentations were conducted using Eclipse300<sup>TM</sup>, a three-phase compositional simulator. This study investigates minimum miscibility pressure (MMP), a significant miscible gas injection project screening tool. Successful design of the project is contingent to the accurate determination of the MMP. This study evaluates effects of important factors such as injection pressure, oil component composition, and injection gas composition on the MMP and recovery efficiency for slim tube and field-scale displacements. Two applicable MMP correlations were used for comparison and validation purposes.展开更多
为能够及时地获取纺纱过程中纱线质量变化信息,为优化纱线工艺参数服务,提出一种实时检测纱线条干均匀度的测量方法。为提高测量效率,首先使用最小外接矩形对实时采集的连续纱线图像进行感兴趣区域(region of interest,ROI)获取,对获取...为能够及时地获取纺纱过程中纱线质量变化信息,为优化纱线工艺参数服务,提出一种实时检测纱线条干均匀度的测量方法。为提高测量效率,首先使用最小外接矩形对实时采集的连续纱线图像进行感兴趣区域(region of interest,ROI)获取,对获取纱线图像根据纱线方向进行自动裁剪。其次基于最大类间方差法(OTSU)阈值分割及形态学运算获得的纱线条干二值图像。最后利用尺度不变特征转换(scale-invariant feature transform,SIFT)算法检测特征点对重合部分数据去除,保证纱线数据的完整及连续性,提出加入纱线倾斜角计算纱线直径方法。基于此方法计算对3种线密度的紧密纺纯棉纱的纱线直径并对纱线条干及纱疵进行检测。实验测量直径平均误差为2.38%,变异系数(coefficient of variation,CV)值与Uster Classimat5条干测试仪测试结果基本一致,表明此方法可满足纱线运动速度为5~30 m/min的纱线条干均匀度实时检测。展开更多
We revisit how we utilized how Weber in 1961 initiated the process of quantization of early universe fields to the issue of what was for a wormhole mouth. While the wormhole models are well understood, there is not su...We revisit how we utilized how Weber in 1961 initiated the process of quantization of early universe fields to the issue of what was for a wormhole mouth. While the wormhole models are well understood, there is not such a consensus as to how the mouth of a wormhole could generate signals. We try to develop a model for doing so and then revisit it, the Wormhole while considering a Tokamak model we used in a different publication as a way of generating GW, and Gravitons.展开更多
基金Project supported by the National Natural Science Foundation of China (Grant No. 60972165)the National High Technology Project of China (Grant No. 2007AA11Z210)+2 种基金the Doctoral Fund of Ministry of Education of China (Grant Nos. 20100092120012,20070286004)the Foundation of High Technology Project in Jiangsu Province,the Natural Science Foundation of Jiangsu Province(Grant No. BK2010240)the Special Scientific Foundation for the"Eleventh-Five-Year" Plan of China
文摘This paper presents a new routing strategy by introducing a tunable parameter into the minimum information path routing strategy we proposed previously. It is found that network transmission capacity can be considerably enhanced by adjusting the parameter with various allocations of node capability for packet delivery. Moreover, the proposed routing strategy provides a traffic load distribution which can better match the allocation of node capability than that of traditional efficient routing strategies, leading to a network with improved transmission performance. This routing strategy, without deviating from the shortest-path routing strategy in the length of paths too much, produces improved performance indexes such as critical generating rate, average length of paths and average search information.
基金Supported by the National Natural Science Foundation of China (No. 60072004)
文摘The effects of stage numbers on power dissipation of pipeline analog-to-digital converter （ADC） are studied and a novel design method aiming for power optimization is presented. In this method, a minimum comparator number algorithm （MCNA） is first introduced, and then the optimum distribution of resolutions through pipeline ADC stages is deduced by MCNA. Based on the optimum stage-resolution distribution, an optimization method is established, which examines the precise function between ADC power and stage resolutions with a parameter of power ratio （Rp）. For 10-bit pipeline ADC with scaling down technology, the simulation results by using MATLAB CAD tools show that an eight-stage topology with 1-bit RSD correction achieves the power optimization indicated by the power reduction ratio.
文摘In optical techniques,noise signal is a classical problem in medical image processing.Recently,there has been considerable interest in using the wavelet transform with Bayesian estimation as a powerful tool for recovering image from noisy data.In wavelet domain,if Bayesian estimator is used for denoising problem,the solution requires a prior knowledge about the distribution of wavelet coeffcients.Indeed,wavelet coeffcients might be better modeled by super Gaussian density.The super Gaussian density can be generated by Gaussian scale mixture(GSM).So,we present new minimum mean square error(MMSE)estimator for spherically-contoured GSM with Maxwell distribution in additive white Gaussian noise(AWGN).We compare our proposed method to current state-of-the-art method applied on standard test image and we quantify achieved performance improvement.
文摘A new approach is demonstrated in which soft experimentation can be performed for MMP measurements, thus replacing the common practice of slim tube displacement laboratory experiments. Recovery potential from oil reservoirs by miscible flue gas injection was studied by slim tube and field-scale numerical simulation using two flue gases and seven crude oils sampled at different depths in three candidate reservoirs. The soft experimentations were conducted using Eclipse300<sup>TM</sup>, a three-phase compositional simulator. This study investigates minimum miscibility pressure (MMP), a significant miscible gas injection project screening tool. Successful design of the project is contingent to the accurate determination of the MMP. This study evaluates effects of important factors such as injection pressure, oil component composition, and injection gas composition on the MMP and recovery efficiency for slim tube and field-scale displacements. Two applicable MMP correlations were used for comparison and validation purposes.
文摘为能够及时地获取纺纱过程中纱线质量变化信息,为优化纱线工艺参数服务,提出一种实时检测纱线条干均匀度的测量方法。为提高测量效率,首先使用最小外接矩形对实时采集的连续纱线图像进行感兴趣区域(region of interest,ROI)获取,对获取纱线图像根据纱线方向进行自动裁剪。其次基于最大类间方差法(OTSU)阈值分割及形态学运算获得的纱线条干二值图像。最后利用尺度不变特征转换(scale-invariant feature transform,SIFT)算法检测特征点对重合部分数据去除,保证纱线数据的完整及连续性,提出加入纱线倾斜角计算纱线直径方法。基于此方法计算对3种线密度的紧密纺纯棉纱的纱线直径并对纱线条干及纱疵进行检测。实验测量直径平均误差为2.38%,变异系数(coefficient of variation,CV)值与Uster Classimat5条干测试仪测试结果基本一致,表明此方法可满足纱线运动速度为5~30 m/min的纱线条干均匀度实时检测。
文摘We revisit how we utilized how Weber in 1961 initiated the process of quantization of early universe fields to the issue of what was for a wormhole mouth. While the wormhole models are well understood, there is not such a consensus as to how the mouth of a wormhole could generate signals. We try to develop a model for doing so and then revisit it, the Wormhole while considering a Tokamak model we used in a different publication as a way of generating GW, and Gravitons.
