We present a system that generates annotated video in realtime. Moving objects are first automatically extracted by means of video analysis and then coded using MPEG–4. Moreover, an MPEG–7 description of object features is generated. This description is used for automated event detection as well as for rendering. Rendering enhances important objects in the scene on the receiver side, thus facil...

We discuss the form of the propagator U(t) for the timedependent Schrödinger equation on an asyptotically Euclidean, or, more generally, asymptotically conic, manifold with no trapped geodesics. In the asymptotically Euclidean case, if χ ∈ C∞ 0 , and with F denoting Fourier transform, F ◦ e 2/2tU(t)χ is a Fourier integral operator for t 6= 0. The canonical relation of this operator is a “sojour...

We explicitly derive collective field theory description for the system of fermions in the harmonic potential. This field theory appears to be a coupled system of free scalar and (modified) Liouville field. This theory should be considered as an exact bosonization of the system of non-relativistic fermions in the harmonic potential. Being surprisingly similar to the world-sheet formulation of c...

We provide a general construction of quantum generalized master equations with a memory kernel leading to well-defined, that is, completely positive and trace-preserving, time evolutions. The approach builds on an operator generalization of memory kernels appearing in the description of non-Markovian classical processes and puts into evidence the nonuniqueness of the relationship arising due to...

Introduction In the common textbook presentation of quantum mechanics the observables of a quantum system are represented by selfadjoint operators, or, equivalently , by spectral measures. The origin of this point of view dates back to the very beginning of quantum theory. Its rigorous mathematical formulation is mainly due to von Neumann [53], and, for a more recent and complete review, we ref...

Background: Heat stress in the steel industry is considered as a serious threat to the health and safety of workers. A wide spectrum of complications and diseases from mild disorders such as burning sensation to fatal conditions such as thermal shock may occur due to uncontrolled thermal stress. In this study, heat stress assessment was performed according to the wet-bulb globe temperature (WBG...

We define the notion of rational closure in the context of Description Logics extended with a tipicality operator. We start from ALC +T, an extension of ALC with a typicality operator T : intuitively allowing to express concepts of the form T(C), meant to select the “most normal” instances of a concept C. The semantics we consider is based on rational model. But we further restrict the semantic...

The research in the field of assembly operations mainly focuses on the handling of rigid objects. Although nonrigid objects like ropes, wires, or steels springs must be handled as well. Therefore, our research investigates the sensorbased handling of deformable linear objects in the field of assembly operations. In this paper, we discuss guidelines for a task description that is able to cope wi...

Due to the constantly growing number of information sources, intelligent information retrieval becomes a more and more important task. We model information sources by description logic (DL) terminologies. The commonalities of user-speciied examples can be computed by the least common subsumer (LCS) operator. However, in some cases this operator delivers too general results. In this article we s...