The radiation of sound waves from partially lined duct is treated by using the mode-matching method in conjunction with Wiener-Hopf technique. solution obtained modification technique and involves an infinite series unknowns which are determined system linear algebraic equations. Numerical this for various values problem parameters, whereby effects these parameters on diffraction studied. A per...

We study various versions of the univariate and multivariate matching and rook polynomials. We show that there is most general multivariate matching polynomial, which is, up the some simple substitutions and multiplication with a prefactor, the original multivariate matching polynomial introduced by C. Heilmann and E. Lieb. We follow here a line of investigation which was very successfully purs...

In this article a discrete weighted least-squares method for the numerical solution of elliptic partial differential equations exhibiting smooth solution is presented. It is shown how to create well-conditioned matrices of the resulting system of linear equations using algebraic polynomials, carefully selected matching points and weight factors. Two simple algorithms generating suitable matchin...

In this article, in order to enable a novice user to interact with the temporal database system and simplify the query processing in temporal database system, a Temporal Natural Language Interface(TNLP) has been designed and implemented. Object evolution in temporal databases is interesting, but none of the SQL-like algebraic languages take evolution into account. This work makes use of a tempo...

We define a simple, explicit map sending a morphism f : M → N of pointwise finite dimensional persistence modules to a matching between the barcodes of M and N . Our main result is that, in a precise sense, the quality of this matching is tightly controlled by the lengths of the longest intervals in the barcodes of ker f and coker f . As an immediate corollary, we obtain a new proof of the alge...

Given a bipartite graph G = (U ∪ V , E) such that | U |=| V | and every edge is labelled true or false or both, the perfect matching free subgraph problem is to determine whether or not there exists a subgraph of G containing, for each node u of U , either all the edges labelled true or all the edges labelled false incident to u, and which does not contain a perfect matching. This problem arise...

This paper describes an 8 kbit/s ACELP speech coder with high performance for both speech and non-speech signals such as background noise. While the traditional waveform matching LPAS structure employed in many existing speech coders provides high quality for speech signals, it has significant performance limitations for e.g. background noise. The coder presented here employs a novel adaptive g...

We propose a formal specification framework for functional aspects of services. We define services as operations which are specified by means of preand postconditions, for the specification of which we use extensions of description logic. The (extensions of) description logic and the specification framework itself are defined as institutions. This gives the framework a uniformity of definition ...

of “Recognition and Positioning of Rigid Objects using Algebraic and Moment Invariants,” by Gabriel Taubin, Ph.D., Brown University, May 1991 In this thesis we describe twomodel-based approaches to 3D rigid object recognition and positioning from range data, particularly in cluttered environments. Following a model-based approach, we recognize and locate objects in the data data set by comparin...

Applications of Algebraic Geometry to Object/Image Recognition. (August 2007) Kevin Toney Abbott, B.S., University of South Carolina; M.S., Texas A&M University Chair of Advisory Committee: Dr. Peter Stiller In recent years, new approaches to the problem of Automated Target Recognition using techniques of shape theory and algebraic geometry have been explored. The power of this shape theoretic ...