Abs t r ac t Many tracking systems involve basically active and passive subsystems. If i t can be reasonably assumed that passive measurements have no "cost", this is not true f o r active measurements. So, a general problem i s to scheduling active measurements, so as to combine them optimally with the passive ones. More generally, we are interested by optimizing controls i n the estimation pr...

Thanks to their huge expressive capability, coupled with the widespread use of the Internet and of affordable and high quality cameras and computers, digital multimedia represent nowadays one of the principal means of communication. Besides the many benefits, the wide proliferation of such contents has lead to problematic issues regarding their authenticity and security. To cope with such probl...

Background: For decades, static stretching has been the standard benchmark for training programs, because it has been shown to increase flexibility compared with other methods of stretching. Objective: The current study investigated and compared the effects of active dynamic stretching and passive static stretching on hamstring tightness. Me...

The Cottrell-Stokes two-stage straining of fcc metals and intermetallic compounds whose yield stress exhibits an anomalous temperature dependence is analyzed theoretically. The magnitude of stress jumps brought about by changes in temperature is expressed via characteristics of dislocation transformations to shortand long-lived barriers. The manner in which the thermally activated blocking of d...

For the past few years, the passive versus active debate has been characterized as a pitched battle between two sides. Upon closer inspection, however, some might recognize that this ongoing argument is far more nuanced than it appears at fi rst blush and actually involves multiple sides with somewhat vague allegiances. Among actively managed funds, for instance, two distinct camps have emerged...

In this paper, a control strategy to reduce the vibrational response of adjacent buildings under seismic excitation is presented. The proposed strategy combines passive linking elements with an active decentralized H∞ control system. The overall active-passive control system admits decentralized design and operation, and achieves an excellent vibrational reduction when the active control system...

eqn (2.189) (/ pP −m) γ u(pP) = 0 (/ p−m) γ u(pP) = 0 eqn (2.276) +1 following eqn (2.276) following eqn (2.278) eqn (2.361) −1 transform as transform as (normal ordering is implicitly assumed) eqn (2.378) −1 a parity transformation a passive parity transformation eqn (2.385) −1 The transformation The active transformation eqn (2.404) −1 The transformation The active transformation eqn (2.408) ...

Many consumers encounter and interact with digital artifacts and services on a daily basis, either willingly or unwillingly. This paper conceptualizes consumer online behaviors into more refined categories in the context of online advertising. Behaviors can be differentiated by their directions and intensities. Approach and avoidance are two directions of behavioral responses when consumers enc...