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A PID servo control system experiment conducted remotely via Internet
R. M. Parkin, C. A. Czarnecki, Riko Šafarič, D. W. Calkin, 2002, izvirni znanstveni članek

Opis: The principles of robotics and control are widely taught in engineering subjects, however a common problem concerns the limited availability of expensive equipment with which students can work with, in order to acquire valuable practical "hands on" experience. The MuMaTE virtual robotics and control project on the World Wide Web (www) was launched to evaluate the suitability of virtual learning environments, the Internet, and multimedia technologies within an engineering-based flexible learning program. Students using networked computers can access this facility to study a wide variety of on-line course material and perform a series of interactive experiments with real world laboratory hardware. This paper presents an on-line experiment, which enabled users to successfully control and observe the response of a commercial position servo system. The development of the project web server, interface electronics and control software is also discussed.
Ključne besede: automatic control, control, control systems, virtual learning, distance learning, servo system
Objavljeno: 01.06.2012; Ogledov: 1014; Prenosov: 53
URL Povezava na celotno besedilo

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Concept and design of electric car body
Marko Sovič, 2012, diplomsko delo

Opis: In this thesis, a concept multi-material body for an electric vehicle is presented. A selection criteria for materials is made with regard to component function, their traditional shape and the mode of load they have to carry. Initial component design is based on a vehicle reference model. Numerous component modifications are done in dependence on the chosen materials and their production processes. Special attention is payed to the electric vehicle's body structural changes that need to be performed due to the passenger and battery safety. A program for distance simulation is made and used to evaluate cost changes, on a whole vehicle scale, when performing mass-reduction in a vehicle body. It has been proven that it is justified to use light materials.
Ključne besede: body-in-white, electric vehicle, material selection, Catia V5, distance simulation, cost analysis.
Objavljeno: 07.03.2013; Ogledov: 1020; Prenosov: 133
.pdf Celotno besedilo (7,79 MB)

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Partial cubes are distance graphs
Melita Gorše Pihler, Janez Žerovnik, 2005

Opis: Chatrand, Kubicki in Schultz [Aequationes Math. 55 (1998) 129-145] so postavili domnevo, da so vsi dvodelni grafi razdaljni grafi. V tem članku pokažemo, da so vsi grafi podmnožice dvodelnih grafov, in sicer delne kocke, razdaljni grafi.
Ključne besede: matematika, teorija grafov, razdaljni graf, delna kocka, hiperkocka, izometrični podgraf, vložitev, mathematics, graph theory, distance graph, partial cube, hypercube, isometric subgraph, embedding
Objavljeno: 10.07.2015; Ogledov: 435; Prenosov: 69
URL Povezava na celotno besedilo

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Distance-balanced graphs
Janja Jerebic, Sandi Klavžar, Douglas F. Rall, 2005

Opis: V članku so vpeljani razdaljno uravnoteženi grafi kot grafi, v katerih ima vsaka povezava ▫$uv$▫ naslednjo lastnost: število točk, ki so bližje ▫$u$▫ kot ▫$v$▫, je enako kot število točk, ki so bližje ▫$v$▫ kot ▫$u$▫. Dobljene so osnovne lastnosti teh grafov. Novi koncept je povezan z grafovskimi simetrijami, študirane so tudi lokalne operacije na grafih glede na razdaljno uravnoteženost. Karakterizirani so razdaljno uravnoteženi kartezični in leksikografski produkti grafov. Postavljenih je več odprtih problemov.
Ključne besede: matematika, teorija grafov, razdalja, razdaljno uravnoteženi grafi, produkti grafov, povezanost, mathematics, graph theory, graph distance, distance-balanced graphs, graph products, connectivity
Objavljeno: 10.07.2015; Ogledov: 552; Prenosov: 56
URL Povezava na celotno besedilo

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A theorem on Wiener-type invariants for isometric subgraphs of hypercubes
Sandi Klavžar, Ivan Gutman, 2006, izvirni znanstveni članek

Opis: Naj bo ▫$d(G,k)$▫ število parov točk grafa ▫$G$▫, ki so na razdalji ▫$k$▫, naj bo ▫$lambda$▫ realno (ali kompleksno) število in naj bo ▫$W_lambda(G) =sum_{k ge 1}d(G,k)k^lambda$▫. Dokazano je, da za delno kocko ▫$G$▫ velja ▫$W_{lambda + 1}(G) = |mathcal{F}| W_lambda(G) - sum_{mathnormal{F} in mathcal{F}} W_lambda(G setminus F)$▫, kjer je ▫$mathcal{F}$▫ particija ▫$E(G)$▫, ki jo inducira Djokovic-Winklerjeva relacija ▫$Theta$▫. Ta rezultat razširja prej znani rezultat za drevesa in implicira različne relacije za topološke indekse, ki temeljijo na razdaljah.
Ključne besede: matematika, teorija grafov, grafovska razdalja, hiperkocka, delna kocka, Wienerjevo število, hiper-Wienerjev indeks, mathematics, graph theory, graph distance, hypercube, partial cube, Wiener number, hyper-Wiener indeks
Objavljeno: 10.07.2015; Ogledov: 505; Prenosov: 51
URL Povezava na celotno besedilo

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