摘要：Various efficient generalized sphere decoding (GSD) algorithms have been proposed to approach optimal ML performance for underdetermined linear systems, by transforming the original problem into the full-column-rank one so that standard SD can be fully applied. However, their design parameters are heuristically set based on observation or the possibility of an ill-conditioned transformed matrix can affect their searching efficiency. This paper presents a better transformation to alleviate the ill-conditioned structure and provides a systematic approach to select design parameters for various GSD algorithms in order to high efficiency. Simulation results on the searching performance confirm that the proposed techniques can provide significant improvement.

摘要：Recent years have seen an explosion of researches and studies into the public sphere and the deformation of *** one extreme,general theoretical statement about public sphere is directly developed from Habermas’s public sphere theory;they have elaborated and extended the theory and applied it to analyze the different situations in different *** the other,the so-called sphere has been extended,from the original cafe bar or some entity space like this to the virtual space,especially with the development of internet and the emerge of many kinds of social media;some scholars noted that the public sphere has appeared in the internet;some social media like blog,micro blog(in China as weibe),and so on have become the new form of public sphere,which is also called public discourse *** some extend,public discourse space belongs to public sphere,but different from *** have some similar characteristic,but they also have some difference within different time and *** example,public discourse space is much closer to audience *** the audience participation is one of the important factors for the public discourse space created by *** can say that both of the discourse space appears in the traditional media and the online media are emphasizing on the relationship between media and *** in this article,the author also does a simple review about public discourse space and its relationship with audience participation.

摘要：The data topology structure of uniform experiment design (UD) is too complex to be reasonable regressed. In this paper, the principle and method of distinguish the training data and testing data were described to make a reasonable regression when uniform experiment design combined with support vector regression (SVR). Two equivalent ways which were the smallest enclosing hypersphere perceptron (SEH) and the enclosing simplex perceptron (ES) were provided to discover the topology relationship of the process parameter datum. To give an application, a series of experiments about laser cladding layer quality were conducted by UD to get the relationship of load, velocity and wearing capacity. Results showed that only the testing datum recommended by the two perceptrons got a good forecasting by SVR. Therefore, the two perceptrons could guide experiments with process parameter data of complex topology structure. Further, the application could be extended over a much wider field of experiments.

摘要：Lithium nickel manganese oxide spinel(Li Ni0.5-Mn1.5O4, LNMO) has attracted much attention as the cathode material for rechargeable lithium-ion batteries due to its high energy density and low cost. However, the short cycle life and poor high-rate capability hinder its commercialization. In this study, we synthesized hollow spherical LNMO built from polyhedral particles. The LNMO hollow structure guarantees sufficient contact with electrolyte and rapid diffusion of lithium ions. To enhance the conductivity, we use carbon nanotubes(CNTs) to modify the surface of the cathode. After CNT modification, the LNMO hollow structure manifests outstanding cycling stability and high-rate capability. It delivers a discharge capacity of 127 m A h g-1 at 5 C, maintaining 104 m A h g-1 after 500 cycles. Even at a high rate of 20 C, a capacity of 121 m A h g-1 can be obtained. The excellent electrochemical performance is ascribed to the unique structure and the enhanced conductivity through CNT modification. It is demonstrated that the CNTmodified hollow spherical LNMO is a promising cathode for lithium ion batteries.

摘要：本文设计了时变多径衰落条件下MIMO-OFDM系统中一种新的信道估计算法。该算法结合递归EM算法和Kalman预测对时变信道进行跟踪。借助软球形译码器(List sphere Decoder,LSD)产生的搜索列表,递归EM算法序贯遍历搜索列表中可能的符号组合来估计各个子载波上的信道频率响应;基于获得的信道频率响应估计,Kalman预测器利用衰落信道的时域二阶统计特性进一步跟踪信道时变。仿真结果表明:本文设计的算法可以有效跟踪信道时变,性能优于传统的软输入Kalman滤波算法。

摘要：目的开发用药决策支持系统,用于辅助管理、规范诊疗行为,使临床用药趋于合理。方法系统应用IBM Web sphere MQ V7.0消息中间件获取医院各信息系统患者诊疗数据,并进行用药决策分析;数据按HL7标准格式封装、传输和解码,实现医院各信息系统间信息交互。结果建立了临床用药规则信息库、常用诊断信息库,系统实现了用药合理性决策支持功能。结论基于HL7和Web sphere MQ的用药决策系统设计符合我院的实际需求,并能提升临床用药质量,减少临床药师的工作量,提升医院药事工作效率。

摘要：论文设计并实现了一种可以用于存档、分析、和挖掘大型分布式数据集的高性能云。文中定义云为一种可以提供互联网资源与(或)服务的基础设施。存储云提供存储服务,计算云则提供计算服务。高性能且能保持这些服务自身的有效性和效率不变,自然很合理地被预期作为实现大规模数据挖掘的中间步骤。论文提出了一种使用Sector/sphere框架和关联规则的云数据挖掘方法,同时给出了由sphere计算云和关联规则支持的编程范例。

摘要：数据中心服务器虚拟化平台是虚拟化与数据中心的深度融合。分析了服务器虚拟化技术,选择了VMware vsphere为虚拟化数据中心的最佳平台,设计了基于VMwarevsphere的服务器虚拟化数据中心建设规划,实地部署了虚拟化数据中心,与实施前效果进行对比优势明显。