In this paper, a new method for retrieving similar shapes from a shape database is proposed. The shapes in the database are indexed by their CPA-strings. When a query shape is submitted to the system, it is converted to a CPA-string from which both the lower and the upper bounds of the locations of the potentially matched shapes are computed. This will restrict the search space to a reasonable ...

a specific form of the inertial law is presented by which we can gain a deeper insight into the essence of mass and inertia. in this modified theory, there is no need to keep the concept of absolute space and newton's third law as principles, by introducing a convenient form for gravitational law the coupling constant g becomes a function of inertial parameters of the universe

we obtain the expression of ricci tensor for a $gcr$-lightlikesubmanifold of indefinite complex space form and discuss itsproperties on a totally geodesic $gcr$-lightlike submanifold of anindefinite complex space form. moreover, we have proved that everyproper totally umbilical $gcr$-lightlike submanifold of anindefinite kaehler manifold is a totally geodesic $gcr$-lightlikesubmanifold.

Modeling free-form shapes in a 3D space is one of the difficult problems in computer graphics. In a parametric patch, intuitive control of free-form shapes is not easy. Modeling methods based on strict physical laws need considerable computation time to deform objects, which are not suitable for interactive applications. In this paper we focus on a cellular automaton and try to apply it to inte...

A high performance numerical technique in the study of aorto-coronaric bypass anastomoses configurations using steady Stokes equations is presented. The problem is first expressed as an optimal control problem. Then, by using an embedding method, the class of admissible shapes is replaced by a class of positive Borel measures. The optimization problem in measure space is then approximated by ...

Using the geometrical properties of medial axis of closed planar shapes, we propose a shape representation called chain of circles (CoCs), and show its use for shape matching and recognition. CoCs is directly extracted from a resulting axial con guration of shapes along boundary curves without any intermediate description like graph obtained from segmenting shapes, and has the form of vector, e...

let c be a field of subsets of a set i. also, let     1 i i be a non-decreasing positivesequence of real numbers such that 1, 1 0 1   i  and    11 i i . in this paper we prove thatbv of all the games of -bounded variation on c is a non-separable and norm dual banach space of thespace of simple games on c . we use this fact to establish the existence of a linear mapping t from...

urban green spaces are one of the most important services in modern cities and form a set of urban sustainable development factors which receive considerable attention from urban planners. this paper explains how land use can be optimally allocated to urban public green spaces. in this study, some of the factors influencing urban green spaces in a period from 1373 to 1384 were studied. moreover...

For NC -+ 00 the structure function of physical fermions in the Gross-Neveu model is of pure valence type. Nevertheless several strange form factors of u-quarks, including the induced magnetic moment and the a-term acquire substantial O(Ni) contributions from virtual ss pairs. Those arise from matrix elements which are off-diagonal in Fock space, i.e. they do not have a simple interpretation in...