ID 原文 译文
24165 文中通过仿真对两种 Bulk-FFBP算法进行了误差分析、成像性能分析以及算法效率分析,并与 Block-FFBP 算法进行对比,证实了 Bulk-FFBP 的优越性。 The outperformance of Bulk-FFBP relative to Block-FFBP is verified through simulations in error analysis, imaging evaluation and computing efficiency test.
24166 该文基于传播模型定量分析了超声传输时间法检测局部脉搏波速(PWV)过程中扫描帧频与声束数对脉动位移曲线估计、延迟时间估计及 PWV 拟合的估计精度,采用方差分析确定了误差显著性和影响因素的主次关系。 The estimation accuracy of the wall displacement, delay time, and linear-regression-based Pulse Wave Velocity (PWV) affected by different scanning frame rates and beam density is investigated quantitatively in the measurement of the regional PWV with ultrasound transit time method based on a model of pulse wave propagation along a carotid artery segment.
24167 结果表明,脉动位移相对误差在 0.23~0.28 之间,帧频对其估计精度影响不显著(0.05>p); Through statistical variance analysis, the significance levels of measurement errors as well as the primary and secondary relations of these two influence factors are ascertained. The results show that the frame rates do not significantly affect the wall displacement estimation accuracy (0.05>p) with relative errors ranged from 0.23 to 0.28.
24168 延迟时间估计同时受声束对距离和帧频的影响(0.01 mm 增大到 38 mm,平均相对误差由0.99减至0.06; The delay time measurement accuracy is influenced significantly by the frame rates and spacing between two beams simultaneously (0.01 The relative errors decrease from 0.99 to 0.06 as the distances from the first beam to others increase from 2.38 mm to 38 mm.
24169 帧频从1127 Hz 减小为226 Hz,平均相对误差由0.19 增至 0.43; However, the mean transit time errors increase from 0.19 to 0.43 when the frame rates decrease from 1127 Hz to 226 Hz.
24170 PWV拟合受声束数及帧频的共同影响,声束数不小于10时,估计误差为7%~20%,帧频为主要影响因素(0.01 The PWV estimation errors ranging from 7% to 20% are affected significantly by the number of beams as well as frame rates under the condition that the beams used for regression fitness are no less than 10. The frame rate is the main influence factor in this situation (0.01
24171 因此,在保证合理声束数条件下,提高帧频可改善PWV的估计精度。 Therefore, the PWV measurement accuracy can be improved by increasing frame rate with a proper beam setting.
24172 结果有助于为后续PWV检测精度的改进研究提供依据。 Experimental results could be helpful to explore novel measurement method for improving PWV accuracy in the follow-up work.
24173 该文为降低无线接入网的能耗,提出一种基于 Benders 分解的协作节能机制,通过协作基站选择和基站状态控制以解决基站休眠带来的弱覆盖问题。 To reduce the energy consumption in wireless access networks, a Cooperative Energy-Saving Mechanism based on Benders Decomposition (BD-CESM) is presented to solve inadequate coverage problem caused by BS dormancy by means of cooperative BS selection and BS state control.
24174 结合业务量分布和 SINR 空间变化建立协作基站的选择模型,用以找到合适的协作基站以及相应的休眠基站。 A cooperative BS selection model is designed to obtain appropriate cooperative BS and corresponding dormant BS according to the traffic load distribution and the spatial varying SINR.