招贴设计“硬要素”与“软要素”的解析与构建

一张优秀的招贴设计,包含了"硬要素"即具象要素与"软要素"即抽象要素之间和谐构建的关系,解析其视觉语言对于探索招贴的视觉语义具有重要意义。文章着重从以下三方面来解析招贴的视觉语言:1.招贴设计的"硬要素"解析并探索其基础性作用;2.招贴设计的"软要素"分析并研究其主观能动性拓展;3.招贴设计"硬要素"与"软要素"的和谐处理并构建其整合的视觉语义,打造"形神兼备"的优秀招贴设计作品。     

基于多核支持向量机的飞机重着陆诊断

将支持向量机应用于飞机重着陆的诊断研究。通过分析飞机着陆阶段的运动方程,确定造成飞机重着陆的主要影响因素,将传统的单一指标诊断扩展到多指标诊断。提出一种多核支持向量机,并在此基础上建立飞机重着陆诊断模型。与传统支持向量机和神经网络模型比较表明,该模型精度高,具有更强的泛化能力。     

硬盘保护系统研究

介绍了硬盘保护系统的主要功能和在计算机实验室的实际应用,阐述了硬盘分区规划、实验室机器IP地址的自动分配、硬盘保护系统的使用技巧。     

Timing Analysis for Instruction Caches

This paper contributes a comprehensive study of a framework to bound worst-case instruction cache performance for caches with arbitrary levels of associativity. The framework is formally introduced, operationally described and its correctness is shown. Results of incorporating instruction cache predictions within pipeline simulation show that timing predictions for set-associative caches remain just as tight as predictions for direct-mapped caches. The low cache simulation overhead allows interactive use of the analysis tool and scales well with increasing associativity.The approach taken is based on a data-flow specification of the problem and provides another step toward worst-case execution time prediction of contemporary architectures and its use in schedulability analysis for hard real-time systems.     

探寻十届美展壁画作品的材质美

材质是建构壁画形式美的重要因素之一。第十届全国美展壁画作品充分运用材质美感来加强壁画艺术的感染力,这些壁画无论使用那种类型的材料,这些材料都能各显其长,与建筑环境达到了统一的、和谐的关系。可见,材料不仅仅是壁画艺术家表现的工具,也是传递艺术家意志与观念的媒介。     

超立方体网络中任务调度的一个新近似算法

本文研究超立方体中的多处理器任务调度问题,我们研究LDLPT算法并指出为什么这种算法对一些实例具有最差的逼近度,然后提出一种类似装箱算法的新算法-BPA算法,证明该算法和LDLPT算法在相互最差逼近度中具有互补性质,最后,组合这两种算法的基本方法提出了一种求解问题的新算法-CBPA算法,并证明新算法具有比LDLPT算法更好的逼近度。     

On the calculation of deformation curves for two-phase cermets

Analytical algorithms for the construction of tensile and compression stress-strain diagrams of two-phase cermets are proposed, which are based on the concept of mean stresses in the phase volume and physical equations of the theory of small elastoplastic strains. The deformation properties and strength of cermet are supposed to depend on such parameters of its microstructure as mean size and coefficient of variation of solid phase grain-size distribution, contiguity coefficient of solid phase grains, and mean thickness of the metal phase inter-layers. A numerical analysis of the characteristic parameters of deformation curves for WC-Co hard metals has been carried out over a wide range of cobalt concentration and carbide grain size. A good agreement between the theoretical values of ultimate tensile and compression strength and known experimental values has been established. The constructed model deformation curves for hard metals may be regarded as alternatives to the corresponding experimental curves of stress against relative change in specimen length. __________ Translated from Problemy Prochnosti, No. 3, pp. 99–111, May–June, 2006.     

高速钢辊环、轧辊的应用探讨

介绍了高速钢辊环在天钢高线厂应用的情况,对高速钢辊环与碳化钨辊环的优缺点进行了对比,提出了高速钢材质辊环、轧辊在轧钢厂使用的可能性。     

真空液相烧结Mo2FeB2硬质覆层材料的研究

应用真空液相烧结法在Q235钢基体表面制得了Mo2FeB2硬质覆层,并对其进行了硬 度测试、弯曲强度试验与耐腐蚀性试验.结果表明,在1200～1220℃进行烧结,覆层维氏硬度达到13170 MPa(1317 kgf/mm2),弯曲强度达到1168.21 MPa,并且具有较好的耐腐蚀性.采用扫描电镜观察了硬质覆层材料及其界面的微观组织结构,发现硬质覆层内部组织结构致密,覆层与钢基体之间形成了一个具有一定厚度的过渡层,并且两相之间形成了良好的结合界面.并对覆层的断口形貌进行了观察分析.