一种新的基于补丁优先的流调度算法

通过对现有流调度算法的深入研究,提出了一种新的流媒体调度算法——补丁优先的最大等待队列算法。该算法依据请求等待队列的权重来选择服务队列,使系统获得效率和公平性之间的平衡。理论分析和仿真实验表明:与FCFS、MQL和MPQL算法相比,该算法有效减少了用户请求的撤消率、平均等待时间、不公平性,提高了系统的吞吐量,是一种有效的调度策略。     

首钢3万炉转炉炉龄工艺研究与实践

介绍了第三炼钢厂转炉炉龄现状，系统分析了目前影响转炉炉龄的各种要素，认为优化溅渣护炉工艺是提高炉龄的第一要因，同时要兼顾综合砌炉、基础补护炉等要素，并逐一找出相应对策及提高转炉炉龄的途径。     

一种具有快速条件断点的并行程序调试器

快速条件断点是高性能并行程序调试器中进程控制必备的功能之一.分析了快速条件断点基本原理以及快速条件断点设计中需要考虑的代码生成、代码插装和源程序对应等问题.并针对上述问题,提出了预编译与运行时编译结合的代码生成方式、动态代码插装、源断点标识技术等解决方案.利用经过改进的动态补丁码工具Dyninst,设计实现了并行程序调试器XBUSTER,并实现了快速条件断点这一重要功能.测试表明,XBUSTER的执行效率比传统条件断点高.与现有的基于动态插装的系统,如Ceder,ldb和Dyner相比,XBUSTER具有功能性强、可移植性好等鲜明特点.     

Reconstruction of convergent smooth B-spline surfaces

Recently, there have been improvements on reconstruction of smooth B-spline surfaces of arbitrary topological type, but the most important problem of smoothly stitching B-spline surface patches (the continuity problem of B-spline surface patches) in surface reconstruction has not been solved in an effective way. Therefore, the motivation of this paper is to study how to better improve and control the continuity between adjacent B-spline surfaces.

In this paper, we present a local scheme of constructing convergent G¹ smooth bicubic B-spline surface patches with single interior knots over a given arbitrary quad partition of a polygonal model. Unlike previous work which only produces (non-controllable) toleranced G¹ smooth B-spline surfaces, our algorithm generates convergent G¹ smooth B-spline surfaces, which means the continuity of the B-spline surfaces tends to G¹ smoothness as the number of control points increases. The most important feature of our algorithm is, in the meaning of convergent approximation order, the ability to control the continuity of B-spline surfaces within the given tolerance and capture the geometric details presented by the given data points.     

Economic Impact of Software Patching and Optimal Release Scheduling

Because of highly distributed nature of software products, the task of improving software reliability is becoming a complex job. Specialized tools and techniques are being used to isolate the risky software modules. In order to retain in market, firms are required not only to provide the software on time but also to endow with continuous processing. Product updating is the process that comes to safeguard the firm's image at this point of time. And one such attribute of updating is providing software patches. Today, almost all software firms are providing either patching, module exchange or service pack application processes consequent to a release. This paper proposes a scheduling policy for a software product and shows the importance of patching in lowering the system outages and making the system more cost effective. Validation on the proposed policy has been done using real life software failure data set of Tandem Computers. Copyright © 2016 John Wiley & Sons, Ltd.     

混凝土楼板裂缝分析与处理

介绍了住宅现浇混凝土楼板的几种裂缝类型,从设计、施工等方面分析了楼板裂缝的产生原因,并提出了防止混凝土楼板裂缝的措施,最后对裂缝的处理方法进行了分析介绍,供类似工程参考借鉴。     

浅谈高层建筑地下室墙体开裂及处理方法

本文通过对地下室剪力墙混凝土的裂缝成因进行了内外因素综合分析,提出了防止大构件混凝土裂缝的设计与施工的相关技术措施,并对混凝土裂缝的提出了修补处理方法,从而说明了大构件混凝土裂缝的缺陷是可以事前控制的。     

一种改进菱形网格覆盖空洞修复算法

覆盖空洞的产生会严重影响目标监测区域的网络性能。本文提出一种基于混合传感器网络的改进菱形网格覆盖空洞修复算法。该算法通过改进的菱形贴片方式,指导移动节点到指定位置消除空洞区域。仿真结果表明,与TNR算法相比较,本文算法可以有效减少移动节点的使用数目,提高移动节点的利用率。     

一种基于节目流行度的自适应流调度方案

提出了一种基于节目流行度的自适应流调度方案。该方案根据节目点播请求的强度自适应地调整分配给节目的信道数和带宽,并给出了在信道数改变过程中如何实现信道平滑过渡的方法。该方案综合了周期广播算法和流合并算法的优点。实验表明,采用此方案,在点播请求很少时能获得同流分并算法（如补丁算法）一样的性能,在点播请求很多时又有和周期广播算法一样少的服务带宽要求。     

混凝土表面粗糙化后的强度评定方法探析

比较了混凝土表面粗糙化后强度评定的三种方法。补面砂浆不能与粗糙后的混凝土同步破坏是补面法的缺陷。根据评价对象不同,可选取不同的承压面积计算方法。