Delivering Dependable Telecommunication Services Using Off-the-Shelf System Components

For decades, traditional telecommunication systems have reliably delivered telephony services using expensive equipment and software. In spite of large R&D expenses, the end customer costs remained low due to the amortization of the equipment over a large population of users. With the advent of low cost and high performance computers, it has become conceivable to deliver similar and more powerful services using systems constructed with off-the-shelf components. The only obstacle remaining to make this a reality is the ability of system designers to provide rationable dependability of such systems. This paper illustrates one possible avenue for performing this task and identifies a condition that is necessary for the deployment of such systems, namely the components must in turn provide measures of survivability.     

The Research and Application About "Dry Peeling Off" Technology for Airplane Surface Paint Layer

In this paper, the principle of spurting take off lacquer were introduced; and with orthogonal method the unsaturate polyester was prepared ;it was easy to peel airplane paint layer off with this material and equipment.     

一种精度高用途广的微型流速传感器

本文介绍了一种新近研究出的综合性能良好的微型应变式流速传感器,它可用于多种介质测量其特点是:测量精度高,几何尺寸小,使用温度宽,工作可靠;既可应用于一般复杂条件的工程测量,也可用于实验室高精度指标的稳态及瞬态流速测量。本文讨论了传感器的结构特点及其对性能影响。     

反相液相色谱分析三苯基磷

介绍了用反相液相色谱法定量分析三苯基磷。使用 ODS( 2 50× 4 .6 mm,1 0μ)不锈钢柱 ,以甲醇水 ( 4∶1 )为流动相 ,流速为 1 .5m L/ min,紫外检测器 ,波长 2 54nm,在浓度 0 .4～ 0 .6 mg/ m L的范围内具有较好的线性关系 ,相关系数 r=0 .999。本方法适用于工业三苯基磷产品的定量分析     

磁场中TbFe1．9晶体生长的取向控制

初步研究了磁致伸缩材料TbFe1.9合金在磁场中凝固的取向控制。结果表明，在与重力平行的120mT磁场中，当Ф16mm的合金熔体的冷却速率为0．7℃／min时，平行于磁场的[111]取向将成为凝固后试样中的择优取向。结合对凝固速率的控制，在远高于居里点的高温熔体中，磁性材料的晶体生长沿易轴的取向可在较弱的磁场中实现。     

Purposive Behavior Acquisition for a Real Robot by Vision-Based Reinforcement Learning

This paper presents a method of vision-based reinforcement learning by which a robot learns to shoot a ball into a goal. We discuss several issues in applying the reinforcement learning method to a real robot with vision sensor by which the robot can obtain information about the changes in an environment. First, we construct a state space in terms of size, position, and orientation of a ball and a goal in an image, and an action space is designed in terms of the action commands to be sent to the left and right motors of a mobile robot. This causes a state-action deviation problem in constructing the state and action spaces that reflect the outputs from physical sensors and actuators, respectively. To deal with this issue, an action set is constructed in a way that one action consists of a series of the same action primitive which is successively executed until the current state changes. Next, to speed up the learning time, a mechanism of Learning from Easy Missions (or LEM) is implemented. LEM reduces the learning time from exponential to almost linear order in the size of the state space. The results of computer simulations and real robot experiments are given.     

5G室内场景多通道联合收发技术性能与关键问题

随着数据业务的爆发式增长,室内覆盖成为5G时代的重要场景,部署5G室分系统是解决5G室内覆盖问题的重要手段之一。室分系统部署面临两大场景:新建场景与改造场景。针对室内改造场景,如何保护投资、低成本建设5G网络,同时让用户获得5G多流MIMO体验是目前最关注的问题点。介绍了一种基于多通道收发技术的5G网络创新室分升级改造方案。该方案通过增加竖井线缆、合路器、耦合器等方式,在不改变平层传统室分网络结构的前提下,能够快速在单路馈线场景下实现2流、双路馈线场景下实现4流效果,激发了传统室分网络的5G潜能,从而实现低成本、高效的5G创新室分解决方案。     

浅谈板桥河闸扩建工程施工扬尘控制

建设工程施工扬尘已成为大气污染的重要污染源之一,是建设工程现场文明施工管理的"重中之重"。本文对施工中易扬尘作业加强过程管控,严格执行相关法规,全面落实施工现场管理和施工扬尘防控方面的各项规定和措施,有针对性地开展扬尘污染整治,积极引入新工艺、新技术,优化施工方案,提高施工组织管理水平,不断提高对施工扬尘的控制。     

易加工氯丁橡胶的工业化生产

用７ｍ＾３聚合釜生产了４５ｔ易加工氯丁橡胶，其物理性能和挤出性能的均优于ＣＲ２３０，并与美国同类产品相当，生产表明，制备凝胶和溶胶胶乳的氯丁二烯转化率和ＣＲ２３０中凝胶组分含量对ＣＲ２３０ＥＰ的物理性能和挤出的均有影响。     

Field independence–dependence and cognitive restructuring.

Investigated the hypothesis that field-independent (FI) individuals are more efficient in their use of cognitive restructuring skills than are field-dependent (FD) individuals. 32 FI and 32 FD female undergraduates, as assessed by the Hidden Figures Test, were required to solve a series of anagrams under either an easy or difficult anagram condition. Ss received 5 anagrams constructed from "social" words and 5 anagrams constructed from "nonsocial" words. The resulting repeated measures design allowed for an assessment of the performance effectiveness of FI and FD as well as an examination of the possible differential influences of word "socialness" and anagram difficulty. Analysis of anagram performance indicated that FI Ss found it easier than FD Ss to provide a disorganized field with organization. FI Ss solved the anagrams significantly quicker than did FD Ss. Consistent with this finding, FD Ss perceived the anagram task as being significantly more difficult than did FI Ss. (28 ref) (PsycINFO Database Record (c) 2010 APA, all rights reserved)