回归传统价值:《了不起的盖茨比》的救赎之路

《了不起的盖茨比》生动地描述了二十世纪二十时代的美国社会丰裕物质生活与精神荒原的冲突。美国梦的幻灭、道德和宗教信仰体系的坍塌引发了菲茨杰拉德对美国精神和传统价值观的思索,呼吁回归传统价值观,重塑道德体系。     

灰乳的陈化

<正> 明胶生产要用石灰乳浸泡处理骨素。那么,石灰乳应该如何配制才能充分得到利用,这是笔者关注的一个问题。为此我们做了下面的实验。     

热连轧中AGC控制系统的研究与应用

本文重点介绍莱钢1500mm热连轧机中液压AGC的控制性能及其实现方式。     

Shift-full-rank matrices and applications in space-time trellis codes for relay networks with asynchronous cooperative diversity

To achieve full cooperative diversity in a relay network, most of the existing space-time coding schemes require the synchronization between terminals. A family of space-time trellis codes that achieve full cooperative diversity order without the assumption of synchronization has been recently proposed. The family is based on the stack construction by Hammons and El Gamal and its generalizations by Lu and Kumar. It has been shown that the construction of such a family is equivalent to the construction of binary matrices that have full row rank no matter how their rows are shifted, where a row corresponds to a terminal (or transmit antenna) and its length corresponds to the memory size of the trellis code on that terminal. We call such matrices as shift-full-rank (SFR) matrices. A family of SFR matrices has been also constructed, but the memory sizes of the corresponding space-time trellis codes (the number of columns of SFR matrices) grow exponentially in terms of the number of terminals (the number of rows of SFR matrices), which may cause a high decoding complexity when the number of terminals is not small. In this paper, we systematically study and construct SFR matrices of any sizes for any number of terminals. Furthermore, we construct shortest (square) SFR (SSFR) matrices that correspond to space-time trellis codes with the smallest memory sizes and asynchronous full cooperative diversity. We also present some simulation results to illustrate the performances of the space-time trellis codes associated with SFR matrices in asynchronous cooperative communications.     

基于被动测试的web应用测量

提出一种新的基于被动测试的web应用测量方法,以便准确、快速的获取应用特征与状态信息。设计了web应用测量协议WMP,并对基于该协议的测量系统进行了设计与实现。实验表明该系统能够准确快速地对待测的应用协议交互部分进行测量,为应用管理提供丰富有效的信息。     

消防水箱设计中常见错误及改正措施

根据现行消防技术规范的有关规定，结合建筑工程消防监督审核的工作实践，指出了消防水箱设计中常出现的错误并提出了相应的改正措施。     

数字多用表的比例功能在电阻箱检测中的应用

本文提出了检测电阻箱的一种新方法--比例法.文章除介绍其原理和方法外,还对装置的不确定度进行了分析,并对比例法检测数据和数表法直接测量的检定结果进行比对.比例法检测电阻箱的特点是对标准器和辅助设备的要求低、工作效率高并可实现半自动检定.拥有数字多用表和标准电阻的检测部门可利用本方法.     

大气监测仪器的发展及检定中的问题探讨

本文叙述了大气监测仪器的起源发展过程,分析在检定工作中存在的问题,讨论了解决办法。     

论包装与品牌定位

在现代商业社会,包装的价值已经从一个单纯保护商品的功能转化为提升和凸现品牌定位的更高层面上来了.如何有效、科学地利用一个产品的包装色彩、包装造型、包装材料以及包装上面的产品名称、图案、符号、文字等可视元素,成为促进与强化一个品牌定位在客户心目中塑造的重要的营销手段.     

我国矿业权评估管理研究

分析了矿业权评估管理体系和我国矿业权评估现状，提出了促进我国矿业权评估发展的建议。