The notion of properness, well-known for constant linear systems, is generalized to the time-varying case. In a module theoretic framework intrinsic characterizations of input-output system properness are derived. For this, ltrations and the associated Hilbert polyno-mials are used. Classical criteria for properness of polynomial and state representations for constant linear systems are general...

Automatically generating textual descriptions of numerical data is a particularly useful task with the explosion of accessible online information. A textual description allows people to absorb key features more easily, especially when there are large amounts of data involved. Some work has been done in automatically generating text from data; e.g. Mittal et al. [1995] and Robin and McKeown [199...

Nowadays with increasing use of numerous nonlinear loads, voltage and current harmonics in power systems are one of the most important problems power engineers encounter. Many of these nonlinear loads, because of their dynamic natures, inject time-varying harmonics into power system. Common techniques applied for harmonics measurement and assessment such as FFT have significant errors in presen...

The properties of virtually all real-world materials change with time, causing their bidirectional reflectance distribution functions (BRDFs) to be time varying. However, none of the existing BRDF models and databases take time variation into consideration; they represent the appearance of a material at a single time instance. In this paper, we address the acquisition, analysis, modeling, and r...

In an important subset of surgical procedures, the procedure itself poses a significant threat to the patient's nervous system. In order to reduce this threat, neurophysiological function of the structures at risk may be monitored during surgery using time-locked sensory or motor-evoked responses. A simple but powerful extension of the segmented and sliding average techniques currently in wide ...

Linear Time Varying Precoder Applied to an ISI Channel Nader Sheikholeslami and Peter Kabal Department of Electrical Engineering McGill University, Montreal, Quebec, Canada [email protected] [email protected] Abstract A linear time varying precoding structure for data transmission over ISI channels is investigated. This precoding scheme is capable of stabilizing the inverse channel lter witho...

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Two recent contributions to the literature (Kouvaritakis et al., 2000; Imsland et al., 2004) have shown how to use offline analysis to reduce online computation while enlarging the feasible regions of a control law. Both methods make use of an augmented system so this paper gives some proper discussion of their differences and similarities and in particular it gives new insight to the structure...