Results 71 to 80 of about 3,375,631 (334)

STROPHOIDS, A FAMILY OF CUBIC CURVES WITH REMARKABLE PROPERTIES

open access: yesJournal of Industrial Design and Engineering Graphics, 2015
Strophoids are circular cubic curves which have a node with orthogonal tangents. These rational curves are characterized by a series or properties, and they show up as locus of points at various geometric problems in the Euclidean plane: Strophoids are ...
Hellmuth Stachel
doaj   +4 more sources

(1,2)-PDS in graphs with the small number of vertices of large degrees [PDF]

open access: yesOpuscula Mathematica
We define and study a perfect \((1,2)\)-dominating set which is a special case of a \((1,2)\)-dominating set. We discuss the existence of a perfect \((1,2)\)-dominating set in graphs with at most two vertices of maximum degree.
Urszula Bednarz, Mateusz Pirga
doaj   +1 more source

About Learning Discrete Mathematics at Bulgarian School [PDF]

open access: yes, 2010
The present work is dedicated to the learning discrete mathematics at Bulgarian school. A review of syllabuses and standards has been made.
Garov, Kosta, Radev, Vilislav
core  

Conformally Perforated Shellular Metamaterials with Tunable Thermomechanical and Acoustic Properties

open access: yesAdvanced Functional Materials, EarlyView.
This study introduces Conformally Perforated Shellular Metamaterials (CPSMs), which overcome TPMS design limitations by mapping 2D cellular layouts onto 3D surfaces. CPSMs exhibit enhanced elastic stiffness, thermal conductivity, and acoustic performance compared to intact P‐type shellulars, demonstrating their potential as multifunctional ...
Benyamin Shahryari   +8 more
wiley   +1 more source

Discrete mathematics [PDF]

open access: yes, 2014
Робоча програма дисципліни “Дискретна математика” для студентів галузі знань 0403 “Системні науки та кібернетика” напряму підготовки 6.040302 “Інформатика”.Рабочая программа дисциплины "Дискретная математика" для студентов области знаний 0403 "Системные ...
Нестерова, Олена Дмитрівна
core  

Rapid Diagnostics of Reconfigurable Intelligent Surfaces Using Space‐Time‐Coding Modulation

open access: yesAdvanced Functional Materials, EarlyView.
A fast reconfigurable‐intelligent‐surface (RIS) diagnostics method is proposed based on spatio‐temporal modulation with orthogonal codes. Theoretical analysis demonstrates a clear distinction in code channel power between normal and faulty elements. Simulations validate its feasibility under high fault ratios and varying receiving angles.
Yi Ning Zheng   +7 more
wiley   +1 more source

Degree sequence for k-arc strongly connected multiple digraphs

open access: yesJournal of Inequalities and Applications, 2017
Let D be a digraph on { v 1 , … , v n } $\{v_{1},\ldots, v_{n}\}$ . Then the sequence { ( d + ( v 1 ) , d − ( v 1 ) ) , … , ( d + ( v n ) , d − ( v n ) ) } $\{ (d^{+}(v_{1}), d^{-}(v_{1})), \ldots, (d^{+}(v_{n}), d^{-}(v_{n}))\}$ is called the degree ...
Yanmei Hong, Qinghai Liu
doaj   +1 more source

Teaching of Discrete Mathematics [PDF]

open access: yes, 2002
This paper presents an alternative methodology of development for the discipline of Discrete Mathematics offered to courses in the area of computation. It explores the availability of new teaching tools and programming languages. This way, we try to stimulate and provide students with an environment in which they can reach better results in order that ...
Simone C. Mendes   +2 more
openaire   +1 more source

Application of Discrete Mathematics in Urban Transportation System Analysis

open access: yes, 2014
1 School of Automotive Engineering, Dalian University of Technology, Dalian 116024, China 2 Transportation Management College, Dalian Maritime University, Dalian 116024, China 3Department of Mechanical and Manufacturing Engineering, Aalborg University ...
Baozhen Yao   +4 more
semanticscholar   +1 more source

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