The stability of the free-running hydrogen maser is limited by pulling of the unperturbed hydrogen transition frequency due to instability of the cavity resonance frequency. Zh~o automatic approaches to cavity stabiliz@zzatlon have been used successfully infield operabb atomic hydrogen masers in the past. One method is based upon the '!~pin-exchan@" tuning procedure and was wed in marers constr...

the large amount of computation necessary for obtaining time optimal solution for moving a manipulator on specified path has made it impossible to introduce an on line time optimal control algorithm. most of this computational burden is due to calculation of switching points. in this paper a learning algorithm is proposed for finding the switching points. the method, which can be used for both ...

one of the most controversial and unresolved questions in bilingual first language acquisition (henceforth bfla) is whether bilingual children develop one mixed or two independent linguistic systems. many scholars in the lield of bfla arc in tavor of the one-system hypothesis (leopold 1970; swain and wesche, 1975; volterra and tacschner, j 987; grosjean, 1982; tacschncr, 1983: mclaughlin, 1984:...

An important aspect of packet classification problem on which little light has been shed so far is the rule reference dynamics. In this paper, we argue that for any given classifier, there is likely a significant skew in the rule reference pattern. We term such phenomenon rule reference locality, which we believe stems from biased traffic pattern and/or the existence of “super-rules” that cover...

Power consumption becomes an important issue for modern processors. The off-chip buses consume considerable amount of total power [9,7]. One effective way to reduce power is to reduce the overall bus switching activities since they are proportional to the power. Up till now, the most effective technique in reducing the switching activities on the data buses is Frequent Value Encoding (FVE) that...

This paper introduces a perspective accounting for errors that may occur as a result of the human interaction with the three-dimensional (3D) space. Particularly, we are interested in errors that are caused by cognitively crossing the boundary between peripersonal and extrapersonal space. Several behavioural, neurophysiological, and neuropsychological perspectives are reviewed in order to devel...

The aim of this paper is computing of the optimum duty cycle and inductance using Genetic Algorithm to minimize tracking error and operating costs by means of a new current reference. Such a current reference is able to share the responsibilities in power quality deterioration between supply and customer, making the filter to deliver a current with a lower harmonic content, which means a lower ...

We report body weights (BW) and blood and serum analyses for 6 fully mature and 8 not-yet-mature captive plains viscachas before and 3, 6 and 9 months after switching from a low-fiber, high-energy diet to a high-fiber, low-energy diet. Initially, body weights, serum glucose, fructosamine and cholesterol levels were above the reference range in the fully mature animals. Furthermore, 4 of these a...

Humans may be faster to avoid negative words than to approach negative words, and faster to approach positive words than to avoid positive words. That is an example of affective stimulus-response (S-R) compatibility. The present study identified the reference valence effects of affective stimulus-response (S-R) compatibility when auditory stimulus materials are used. The researchers explored th...

Multihypothesis motion-compensating predictors combine several motion-compensated signals to predict the current frame signal. More than one motion-compensated signal, or hypothesis, is selected for transmission. Long-term memory motion-compensated prediction is a further concept for efficient video compression and is an example for forward-adaptive hypothesis switching. One motion-compensated ...