面向5G网络的MEC部署方案

多接入边缘计算技术通过将计算存储能力与业务服务能力向网络边缘迁移,使应用、服务和内容可以实现本地化、近距离、分布式部署,从而在一定程度上解决了5G增强移动宽带、低时延高可靠以及大规模机器通信类终端连接等场景的业务需求.本文在分析MEC技术在LTE网络中的应用方案以及对于5G网络的价值与意义的基础上,给出了5G MEC部...     

跟踪算法中一种新的数学建模方法

在跟踪领域,建立一个良好的运动目标描述模型是一种算法是否能取得优异效果的关键性因素之一。针对基于运动的跟踪算法提出了一种新的运动目标描述模型。该模型根据运动的连续性探求出运动过程中出现的各种情况之间联系的数学描述方法,并根据对运动目标的观测结果运用EM算法对模型参数进行实时更新。试验结果表明：该模型对部分遮挡,非刚性变形,目标外观发生改变均不敏感。     

Changes in the perceived duration of a narrowband sound induced by a preceding stimulus.

The authors show that a narrowband noise (NBN) is perceived as longer when presented immediately after a wideband noise (WBN), compared to when the WBN is absent. This effect depended on the WBN’s frequency spectrum overlapping that of the NBN, and it increased as the duration of the WBN increased up to 300 ms. It decreased when a silent gap was introduced between the WBN and NBN, but remained significant for an easily detectable gap of 40 ms. A correlate of the effect was observed in the mismatch negativity (MMN) to a deviant stimulus, consisting of a WBN + NBN, presented in a sequence of more common isolated WBNs. The MMN latency was longer for an on-frequency than for an off-frequency WBN; and, more importantly, the size of this difference correlated across participants with the difference in perceived duration. A rhythm-adjustment experiment showed that the presence of an on-frequency WBN immediately preceding a tone caused that tone to be heard as starting earlier than when the WBN was absent. The results are discussed in relation to the continuity illusion and models of duration encoding. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Continuity wave in the elongated bubble region of horizontal slug flow

Visualized observation on the wave feature in a horizontal slug flow was made with a high‐speed digital camera. It was found that the liquid film flow in the elongated bubble region of slug flow behaves as a continuity wave. Theoretical analysis was carried out and it reveals that the liquid film flow is a continuity wave with celerity the same as the translational velocity of the elongated bubble. The control equation for the liquid film height in the elongated bubble region was derived. The results predicted by the equation fit well with the observed data. A new conclusion was obtained that slug flow has continuity wave in it, explaining the stable slug flow wave characterization. © 2005 Wiley Periodicals, Inc. Heat Trans Asian Res, 34(8): 547–554, 2005; Published online in Wiley InterScience ( www.interscience.wiley.com ). DOI 10.1002/htj.20092     

求解最大流量问题的一种新方法

根据网络系统中的连续定理和最大容量等概念,建立了求解最大流量问题的一种简捷算法。此方法改进了惯用的Ford—Fulkerson标记化方法,去掉其繁琐性,因而有更大的实用价值。     

关于(0,2,3)型插值多项式的逼近阶研究

设f(x) ∈C_(2π),Qn(f,x)是以x_(kn)=(2πk)/n(k=0,1,…,n-11)为基点的(0,2,3)型插值多项式,n=2m+1。Tm(f,x)是以{X_(kn)}_(k=0)~(n-1)为基点的(0)型插值多项式。因为u_n(x)∈C_(2π),使得 lim[f(x)-Q_n(f,x)-u_n(x)(f(x)-T_m(f,x))]=0 n→∞ (关于0≤x≤2π一致地成立)。本文进一步得到了逼近阶估计: |f(x)-Q_n(f,x)-u_n(x)(f(x)-T_m(f,x))| ≤C[ω(f,(1_nn)/n)+1/n_(k=1)~nΣω(f,1/k)]     

对轴颈半速涡动的修正

对于无限长径向轴承，本文应用不可压缩流体连续性方程，求得轴颈涡动角速度，它小于转轴瞬时转动角速度之半。     

多元函数的连续性,偏导数,方向导数及可微性之间的关系

本文全面叙述多元函数的连续性、偏导数、方向导数及可微性之间的关系。并通过实例澄清一些模糊看法。     

小型冲压设备智能安全保护装置的研究

为建立一个能够智能识别冲压作业中人手和坯料的安全保护装置,使其满足冲压作业的安全性和进料的连续性要求,研究了人手温度和坯料温度分布的不同特点,提出了采用神经网络理论对人手和坯料进行分类识别,利用误差反向传播算法和支持向量机进行了仿真分类实验;重点讨论了安全装置的整体结构,主要控制模块的设计与实现,然后在BP快速算法的基础上采用C8051F206单片机进行冲压控制的新方法.     

Interpolating G Bézier surfaces over irregular curve networks for ship hull design

We propose a local method of constructing piecewise G¹ Bézier patches to span an irregular curve network, without modifying the given curves at odd- and 4-valent node points. Topologically irregular regions of the network are approximated by implicit surfaces, which are used to generate split curves, which subdivide the regions into triangular and/or rectangular sub-regions. The subdivided regions are then interpolated with Bézier patches. We analyze various singular cases of the G¹ condition that is to be met by the interpolation and propose a new G¹ continuity condition using linear and quartic scalar weight functions. Using this condition, a curve network can be interpolated without modification at 4-valent nodes with two collinear tangent vectors, even in the presence of singularities. We demonstrate our approach in a ship hull.