7,957 Result(s)
within
Qi** Shi
Engineering
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Chapter and Conference Paper
The Variational Inequality Method on Contact Problems and Its Application Software
In this paper the variational inequality theory and numerical method on contact problems are briefly described first, and then the structure of its application software is outlined. Finally the numerical resul...
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Article
Void nucleation during tensile deformation of a C-Mn structural steel
Various methods have been used to reveal the voids arising from ductile fracture processes in a structural steel and the techniques compared. Using a series of the interrupted smooth bar tensile tests specimen...
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Article
On the void growth in C-Mn structural steel during plastic deformation
A procedure has been established to measure the relationship between void growth, plastic strain and stress triaxiality during the fracture of a C-Mn structural steel. A calibration factor for void growth was ...
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Article
Analysis of the complexity and random properties of Geffe's binary sequence generator
A method analysing the complexity and random properties of the feed-forward sequences is described. Based on the method, a class of the generalized Geffe's generators is found. These generators are similar to ...
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Article
The single-model bandwidth in a rectangular dielectric image waveguide
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Chapter
A Cad/Cam Package for Dies for Cold Extrusion of Cans
This paper describes a microcomputer program for aiding the design and manufacture of dies for cold extrusion of cans. Important design parameters are examined and discussed. The program as yet, deals with onl...
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Article
Fabrication of Josephson tunnel junction with suspended metal mask
A small area Josephson tunnel junction is fabricated with the suspended metal mask made of ordinary razor blades. The junction overlap is formed by two successive evaporations of superconductor materials at ob...
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Chapter
A Flexible A-15 Superconducting Tape in the Nb3(Al Si B)1 System
Melt spinning was used to rapidly solidify Nb3(Al Si B) alloys. It was found that without B, a minimum of 18 at% Si was required to form an amorphous ribbon which resulted in a low superconducting transition temp...
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Article
The impedance matching element of dielectric image line
In this paper, the wave impedance of the dielectric image line as a function of geometry dimensions and frequency is analysed. Both necessity and possibility of matching impedance is studied. An optimal matchi...
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Article
Analysis of the propagation properties in an inverted strip dielectric guide
In this paper the conditions are derived which the three lowest modes satisfy respectively in an inverted strip dielectric guide (ISDG). The method of optimal design is dealt with for five parameters selected ...
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Article
Investigation of possibility of flow field diagnostics by laser induced biacetyl phosphorescence
Experimental results of laser induced phosphorescence of biacetyl triplet3A u in a mixture of biacetyl and N2 show that: the lifetime of phosphorescence is a function of tempera...
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Article
Relation between the quasi-cylindrical approximation and the critical classification for swirling flow
It is shown that under the assumption of the quasi-cylindrical approximation with viscous effect the critical flow corresponds to a singularity, as flows approach the critical state from both sides, the radial...
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Article
Principles of flow field diagnostics by laser induced biacetyl phosphorescence
A new method for measuring the density, temperature and velocity of N2 gas flow by laser induced biacetyl phosphorescence is proposed. The characteristics of the laser induced phosphorescence of biacetyl mixed wi...
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Chapter and Conference Paper
Theory and method for designing feedback controllers of siso descriptor systems with H∞-optimal sensitivity
In this paper, some frequency characteristics of SISO descriptor systems are first investigated after the brief introduction of the H∞-optimal sensitivity theory. Then a new frequency domain method for designing ...
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Article
A knowledge-based diagnosis system for automobile engines
A newly-developed knowledge-based diagnosis system for automobile engines is described in this paper. The system is based on the Hierarchical Diagnosis Principle, suggested by the authors. According to this pr...
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Article
Exact design of a wideband duplexer
After solving the boundary value problem of a waveguide junction, the exact design method of a wideband duplexer for 4 GHz and 6 GHz relay communication is obtained by using the concept of equivalent circuits....
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Article
Mathematical analysis and parameters design for millimeter wave integrated dielectric waveguide
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Chapter
New Algorithm for Korenberg-Billings Model of Nonlinear System Identification
A new algorithm is presented here for nonlinear system identification based on input and output relationship by a cascade structure of dynamic linear(L), static nonlinear(N), and dynamic linear(L) subsystems, ...
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Chapter and Conference Paper
Optimum Design of Damage Tolerant Marine Structures
The sources of potential hazards in the sea are many, and risks of for marine structures being damaged are, sometimes, totally unpredictable. Hence a rational design philosophy incorporating the concepts of da...
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Chapter and Conference Paper
Applications of Artificial Intelligence
One of the aims of artificial intelligence has been to make machines behave intelligently as humans do. Thus the study of artificial intelligence includes the study of how humans acquire and apply knowledge, r...
