نتایج جستجو برای: periodically varying heat source

تعداد نتایج: 764486  

2017
Ricardo Pereira Paula Rocha Diego Napp

In this paper we use some classical ideas from linear systems theory to analyse convolutional codes. In particular, we exploit input-state-output representations of periodic linear systems to study periodically time-varying convolutional codes. In this preliminary work we focus on the column distance of these codes and derive explicit necessary and sufficient conditions for an (n, 2, 1) periodi...

Journal: :Physiological measurement 2013
B Sanchez E Louarroudi R Bragos R Pintelon

The harmonic impedance spectra (HIS) of a time-varying bioimpedance Z(ω, t) is a new tool to better understand and describe complex time-varying biological systems with a distinctive periodic character as, for example, cardiovascular and respiratory systems. In this paper, the relationship between the experimental setup and the identification framework for estimating Z(ω, t) is set up. The theo...

Journal: :Transactions of the Society of Instrument and Control Engineers 1987

Journal: :Applied optics 2008
Shih-Yu Tu A H Kung Sunao Kurimura Takeshi Ikegami

A compact tunable UV laser source based on intracavity sum frequency generation in a MgO-doped periodically-poled stoichiometric lithium tantalate optical parametric oscillator is reported. UV output at an approximately 1 mW level of power over the range of 364 to 378 nm with a bandwidth of 0.5 nm was obtained with a crystal that has just one periodically-poled grating period. The full tuning r...

Journal: :journal of modern processes in manufacturing and production 2013
kamran puladsaz razavi shojae rezavi mehdi tajaddara

the use of titanium and its alloys has increased in various industries recently, because of their superior properties of these alloys. titanium alloys are generally classified as difficult to machine materials because of their thermo-mechanical properties such as high strength-to-weight ratio and low thermal conductivity. laser assisted machining (lam) improves the machinability of high strengt...

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