摘要：In wearable electronics,significant research has gone into imparting stretchability and flexibility to otherwise rigid electronic components while maintaining their electrical *** far,this has been achieved through various geometric modifications of the rigid conductive components themselves,such as with microcracked,buckled,or planar meander ***,strategic placement of these resulting components within the overall devices,such as embedding them at the neutral plane,has been found to further enhance mechanical stability under ***,these strategies are still limited in performance,failing to achieve fully strain-insensitive electrical performance under biaxial stretching,twisting,and mixed strain ***,we developed a new platform for wearable,motion artifact-free sensors using a graphene-based multiaxially stretchable kirigami-patterned mesh *** normalized resistance change of the electrodes and graphene embedded in the structure is smaller than 0.5%and 0.23%under 180°torsion and 100%biaxial strain,***,the resistance change is limited to 5%under repeated stretching-releasing cycles from 0%to 100%biaxial *** addition,we investigated the deformation mechanisms of the structure with finite element *** on the simulation results,we derived a dimensionless geometric parameter that enables prediction of stretchability of the structure with high ***,as a proof-of-concept,we demonstrated a biaxially-stretchable graphene-based sensor array capable of monitoring of temperature and glucose level with minimized motion-artifacts.

摘要：加入叠加网多播的主机在带宽及其他方面存在异构性.在叠加网多播协议设计中考虑这些异构性,按优先级组织节点关系与系统架构,将提升系统的整体性能.本文利用mesh架构叠加网多播中大部分数据经几棵树所组成的树子集进行传播的特性,定位主干多播树,在此基础上设计优先级抢占算法,使高能力节点抢占低能力节点位置,从而使高能力节点尽可能的靠近源点,以此提升系统整体性能和贡献较大节点的业务质量.本文给出了协议设计,并对目标架构进行了分析,最后通过仿真实验表明了本算法的有效性.

摘要：随着深亚微米技术的发展,片上网络(Network on Chip,NOC)已成为芯片设计的热点。单位面积晶体管的急剧增多,给NOC可靠性带来了挑战。当节点或链路出现故障时,如何实现容错,提高系统可靠性成为NOC设计的重点。在对NOC容错技术进行简要介绍的基础上,利用现有mesh拓扑结构和维序路由算法,提出一种全新的基于优先级的mesh容错路由算法(fault-tolerant routing in mesh based on priority,PR算法),并采用OPNET仿真平台对算法进行仿真和性能对比。

摘要：Wireless mesh Network is presented as an appealing solution for bridging the digital divide between developed and under-developed regions. But the planning and deployment of these networks are not just a technical matter, since the success depends on many other factors tied to the related region. Although we observe some deployments, to ensure usefulness and sustainability, there is still a need of concrete design process model and proper network planning approach for rural regions, especially in Sub-Saharan Africa. This paper presents a design methodology to provide network connectivity from a landline node in a rural region at very low cost. We propose a methodology composed of ten steps, starting by a deep analysis of the region in order to identify relevant constraints and useful applications to sustain local activities and communication. Approach for planning the physical architecture of the network is based on an indoor-outdoor deployment for reducing the overall cost of the network.

摘要：Emulating massively parallel computer architectures represents a very important tool for the parallel programmers. It allows them to implement and validate their algorithms. Due to the high cost of the massively parallel real machines, they remain unavailable and not popular in the parallel computing community. The goal of this paper is to present an elaborated emulator of a 2-D massively parallel re-configurable mesh computer of size n x n processing elements (PE). Basing on the object modeling method, we develop a hard kernel of a parallel virtual machine in which we translate all the physical properties of its different components. A parallel programming language and its compiler are also devel-oped to edit, compile and run programs. The developed emulator is a multi platform system. It can be installed in any sequential computer whatever may be its operating system and its processing unit technology (CPU). The size n x n of this virtual re-configurable mesh is not limited;it depends just on the performance of the sequential machine supporting the emulator.

摘要：In CAD/CAM, mesh rather than smooth surface is only needed sometimes. A mesh-generating method from permanence principle of Coons patch is developed. A new mesh point is defined through local small subpatch and all mesh points are computed by a linear system with special symmetric block tridiagonal coefficient matrix. By simplification, the determinant of coefficient matrix is determined by determinants of submatrices. Condition of existence of solution is given. Whether coefficient matrix is singular can be judged by a simple polynomial function with the eigenvalue of submatrix as variable. Numerical examples demonstrate the effects of shape parameters.

摘要：Two-dimensional mesh-based motion tracking preserves neighboring relations (through connectivity of the mesh) and also allows warping transformations between pairs of frames;thus, it effectively eliminates blocking artifacts that are common in motion compensation by block matching. However, available uniform 2-D mesh model enforces connec-tivity everywhere within a frame, which is clearly not suitable across occlusion boundaries. To overcome this limitation, BTBC (background to be covered) detection and MF (model failure) detection algorithms are being used. In this algorithm, connectivity of the mesh elements (patches) across covered and uncovered region boundaries are broken. This is achieved by allowing no node points within the background to be covered and refining the mesh structure within the model failure region at each frame. We modify the occlusion-adaptive, content-based mesh design and forward tracking algorithm used by Yucel Altunbasak for selection of points for triangular 2-D mesh design. Then, we propose a new triangulation procedure for mesh structure and also a new algorithm to justify connectivity of mesh structure after motion vector estimation of the mesh points. The modified content-based mesh is adaptive which eliminates the necessity of transmission of all node locations at each frame.

摘要：在数字集成电路设计中,时钟信号是数据传输的基准,时钟信号作为数字芯片内部转换频率最高和布线距离最长的信号,也是数字芯片功耗的重要组成部分。为了优化数字芯片的功耗、功能和稳定性,在GF14 nm工艺下对时钟树进行优化设计,提出一种H-Tree和clock mesh相结合的混合时钟树结构的设计方法,通过clock mesh和clock spine的布局优化整体时钟树的性能和稳定性。仿真结果表明,该混合时钟树能够结构显著提升时钟树性能,有效减少布线长度、时钟偏移以及传播延迟,降低PVT等环境参数的影响。

摘要：为提高IEEE 802.16 mesh网络性能,提出了基于队列占用率的分布式调度算法(QO-CDS).该算法应用跨层设计方法,通过计算各竞争节点的队列占用率来设定节点的优先权,使具有高占用率的节点优先获得调度,以达到减少网络拥塞.提高资源利用率的目的.对算法的数学分析和与其他算法的对比仿真实验表明,相对于传统CDS算法和基于避让指数的改进算法,该算法可以有效提高吞吐量、降低端到端时延.

摘要：无线mesh网络是一种新型网络结构,正在成为业界研究的一个焦点。首先介绍了mesh网络的概念及Wi-Fi mesh网络的组网方式、技术特点和发展历程,在此基础上详细阐述了采用技术试验的方式对Wi-Fi mesh网络的业务支持能力、性能的研究结果,给出了推荐的应用场景,最后结合试验提出了下一步需要研究的问题。