Pole shifting for matrices over real algebras

Pole shifting of multivariable control system over finite dimensional real algebras is studied. The main results are expressed in terms of the minimal polynomial of A + BF, where F is a feedback.     

我国水库移民工作经验分析与对策探讨

水库移民是一项对水利水电事业发展极为重要的复杂工程。文章阐述了工程移民安置的几点经验和教训,对移民过程中出现的问题进行分析并提出具体的解决方案。     

中国传统园林建筑审美意向的基本特征初探

本文以中国传统园林建筑为基点,结合艺术理论和具体的艺术形象,对传统园林建筑的基本元素、空间组织,整体形式和气氛表达进行了分析,并探讨其运用于当代设计条件的方式。     

电信号码编排的建议——使用电话名

介绍了电话名的概念 ,并主要针对电话名系统的实现、应用及前景做了相应的分析     

On the notation of CALM — common assembly language for microprocessors

Common Assembly Language for Microprocessors (CALM) is a set of notations, independent of any manufacturer but strongly inspired by the best existing assemblers.

The paper contains a discussion of assembler addressing modes and their expressions in CALM. A program example of the Bubble Sort subroutine written for 4 processors (hypothetical, 8085, 8086, 68000) gives an idea of CALM programs.     

A Novel Method Of Transport Barrier Formation

A novel technique is proposed for creating transport barriers by the rf waves. This is that the transport barriers can be created by the rf induced ponderomotive force itself and no rf induced flow shear generation is necessary. It is demonstrated that the ponderomotive force of the rf waves can stabilize the ion temperature gradient (ITG) mode, considered nowadays as the dominant source of anomalous energy losses in the low confinement (L) mode. It is also shown that this stabilization can be achieved for rather modest values of the rf power and hence should be easily obtained in actual experiments.      

Effects of electrode arrangement and pressure on synthesis of diamond films by arc discharge plasma jet chemical vapor deposition

The setup and deposition conditions of electrode arrangement and pressure have been studied to synthesize diamond films at high growth rate on wide area efficiently by arc discharge plasma jet chemical vapor deposition. An apparatus has been used in which four plasma torches, one is used for cathode and the others for divided anodes, are arranged and the positions of these torches are changeable. Growth rate, deposition area and thickness of diamond films have increased with changing the electrode arrangements without improvement of thickness variation. Maximum growth rate of our apparatus has occurred at the pressure of 6.7 kPa and diamond films that have less variations of quality and surface roughness have been synthesized at lower pressure during deposition. Moreover, a high conversion rate, which is the ratio of carbon atoms that form diamond in supplied methane gas, of 16% has been obtained at the pressure of 6.7 kPa and methane concentration of 2%.     

超短脉冲光电导开关的全波分析

本文采用时域有限差分法直接求解包含传导电流的三维麦克斯韦方程组,对超短脉冲光电导开关进行全波分析,分析中考虑了静电场影响,采用了比较精确的光电导数学模型。本文还讨论了开关输出信号的模式组成和激光脉冲能量、脉宽对开关性能的影响,并给出了光电导开关响应在不同时刻的三维图形。     

Fault diagnosis as an aid to process machine reliability

Identification of the reasons for failures of process plant machines is the first step in obtaining increased reliability. Weibull analysis of the service life obtained from maintenance records requires a minimum of only five incidents and provides an insight into the failure mechanism. Two examples are given where Weibull analysis of maintenance records helped identify the cause of failure and was instrumental in achieving enhanced reliability of process plant machines.