Pretraživanje
Prikaz rezultata 11-20 od 25
On dinamic spiral patterns - polygonal frames inscribed in circular sections of quadric surfaces
(Faculty of Civil Engineering and Architecture in Niš ; Serbian Society for Geometry and Graphics, Niš ; Beograd, 2014)
Spiral forms, nowadays actual, especially in the area of architecture and design, were the inspiration point for an creative geometrical research. Acquainted with different approaches, present in practical and theoretical ...
Toroidality of Intersection Graphs of Ideals of Commutative Rings
(Springer-Verlag Tokyo, 2014)
Let R be a commutative ring with identity and G(R) its intersection graph. In this paper, all toroidal graphs that are intersection graphs are classified. An improvement over the previous results concerning the planarity ...
On the role of circular sections of quadric surfaces
(Innsbruck University Press, Innsbruck, 2014)
As a part of new advanced course curriculum of Descriptive geometry, in the Faculty of Civil engineering, creative 3D modeling of specific structures is included. These structures, inspired by contemporary architecture ...
Application of Curves and Surfaces of Higher Orders Obtained by Inversion in the Practice of Architecture
(Innsbruck university press, 2014 Universität Innsbruck,1st edition, Innsbruck, 2014)
Rail defects head checking on the Serbian railways
(Faculty of Mechanical Engineering in Slavonski Brod, Faculty of Electrical Engineering in Osijek, Faculty of Civil Engineering in Osijek, 2014)
The rail defects due to rolling contact fatigue represent serious safety hazard for rail traffic all around the world. That hazard is more distinct on railways without adequate maintenance strategy, with the increase of ...
The Structural Transformation of Concave Cupolae of Fourth Sort Using Different Variants of Constructive Procedure, 4th International Scientific Conference on Geometry and Graphics
(Faculty of Civil Engineering and Architecture ; Serbian Society for Geometry and Graphics SUGIG, Niš ; Beograd, 2014)
Concave Cupolae of fourth sort (CC IV) are polyhedra which lateral surface is created by folding a quadruple strip of equilateral triangles, while the bases are regular polygons. The unit cell that forms the deltahedral ...
On the extension of the Erdös-Mordell type inequalities
(Mathematical Inequalities & Applications, 2014)
We discuss the extension of inequality R_A >= c/a * r_b + b/a * r_c to the plane of triangle ABC. Based on the obtained extension, in regard to all three vertices of the triangle, we get the extension of Erdos-Mordell ...
Geometrical Characteristics and Solid Modeling of the Grasshopper Escapement Mechanism
(Faculty of Civil Engineering and Architecture ; Serbian Society for Geometry and Graphics SUGIG, Niš ; Beograd, 2014)
This paper presents the geometrical properties of one special type of escapement mechanism – the grasshopper escapement, by which the first marine chronometers were equipped. The most important and distinguish mechanical ...
Are Vauban's Geometrical Principles Applied in the Petrovaradin Fortress?
(Birkhauser Verlag AG, 2014)
There is a widespread opinion in different sources, ranging from popular to scientific, that the project of the Petrovaradin Fortress was conceived under the influence of the most important European military engineer and ...
Some aspects of contemporary trends in civil engineering
(Peoples' Friendship University of Russia, 2014)
In this research several topics concerning contemporary civil engineering and architecture are introduced: problems regarding structural system choice (with respect to the geometric design of the building), suitable ...