Scale-invariant integral surfaces, which are implicit representations of provide a way to define smooth surfaces from skeletons with prescribed radii defined at their vertices. We introduce new rendering pipeline allowing visualize such in real-time. rely on the distance skeleton sampling strategy along camera rays, dividing each ray into sub-intervals. The proposed is chosen capture main field...

BACKGROUND The fundamental assumptions for various kinds of fetal electrocardiogram (fECG) extraction methods are not consistent with each other, which is a very important problem needed to be ascertained. METHODS Based on two public databases, the regularity on ECG wave durations for normal sinus rhythm is investigated statistically. Taking the ascertained regularity as an assumption, a new ...

In this paper, balancing based model order reduction (MOR) for large-scale linear discrete-time time-invariant systems in prescribed finite time intervals is studied. The first main topic the development of error bounds regarding approximated output vector within limits. influence different components established will be highlighted. After that, second part article proposes strategies that enab...

In switched dynamic system the continuous phase ow is accompanied by a stream of switching events. If the system exhibits chaotic behavior this event stream can be used for generating a rectangular wave with chaotic switching times. In this paper the probability distribution of the intervals between the switching times is derived. Two system di erent in their continuous state model are treated:...

I consider that the genuine fundamental problem of causal inference is the need for (partially untestable) invariance assumptions to operationalize interventions, and I thank the authors for emphasizing the role of invariances in a stimulating paper. I would like to make some brief comments on how the ideas introduced here can also be helpful in the context of measurement problems. Much of the ...

To explain time-scale invariant distributions of response latencies, it appears to be necessary to postulate scalar noise in the remembered intervals, against which the subjective measure of the currently elapsing interval is compared. At least in some cases, the observed variability cannot be due to variability in the subjective intervals written to memory; it must come from noise (variability...

We study the entropy of pure shift-invariant states on a quantum spin chain. Unlike the classical case, the local restrictions to intervals of length N are typically mixed and have therefore a non-zero entropy SN which is, moreover, monotonically increasing in N . We are interested in the asymptotics of the total entropy. We investigate in detail a class of states derived from quasi-free states...