نتایج جستجو برای: commuting graphs

تعداد نتایج: 103441  

Journal: :Graphs and Combinatorics 2022

Abstract Let G be a finite group. A number of graphs with the vertex set have been studied, including power graph, enhanced and commuting graph. These form hierarchy under inclusion edge sets, it is useful to study them together. In addition, several authors considered modifying definition these by choosing natural equivalence relation on group such as equality, conjugacy, or equal orders, join...

Journal: :Ergonomics 2012
Achim Elfering Simone Grebner Martina Haller

UNLABELLED This questionnaire study tests cognitive failures as a mediator of the potential influence of mental work demands and conscientiousness on risky commuting. Participants were 104 railway-controllers (19% female). Failure of memory, attention regulation and action execution were assessed with the Workplace Cognitive Failure (WCF) scale. Mental work demands were measured by the Instrume...

2012
MAN DUEN CHOI KENNETH R. DAVIDSON

We define four 3×3 commuting contractions which do not dilate to commuting isometries. However they do satisfy the scalar von Neumann inequality. These matrices are all nilpotent of order 2. We also show that any three 3×3 commuting contractions which are scalar plus nilpotent of order 2 do dilate to commuting isometries.

Journal: :Cadernos de saude publica 2010
Carla Menêses Santos Rildo de Souza Wanderley Júnior Simone Storino Honda Barros José Cazuza de Farias Júnior Mauro Virgilio Gomes de Barros

The aim of this study was to verify the prevalence of physical inactivity and associated factors among adolescents commuting to school. This was an epidemiological study based on secondary data from a sample of 4,207 adolescents (14-19 years). Data were collected through a previously validated questionnaire (GSHS-WHO). Adolescents were classified as "inactive in commuting" when they reported no...

Journal: :Quantum Information & Computation 2013
Xiaotong Ni Maarten Van den Nest

The study of quantum circuits composed of commuting gates is particularly useful to understand the delicate boundary between quantum and classical computation. Indeed, while being a restricted class, commuting circuits exhibit genuine quantum effects such as entanglement. In this paper we show that the computational power of commuting circuits exhibits a surprisingly rich structure. First we sh...

Journal: :transactions on combinatorics 2012
mehdi eliasi

the first ($pi_1$) and the second $(pi_2$) multiplicative zagreb indices of a connected graph $g$, with vertex set $v(g)$ and edge set $e(g)$, are defined as $pi_1(g) = prod_{u in v(g)} {d_u}^2$ and $pi_2(g) = prod_{uv in e(g)} {d_u}d_{v}$, respectively, where ${d_u}$ denotes the degree of the vertex $u$. in this paper we present a simple approach to order these indices for connected graphs on ...

Journal: :The Iowa Review 1971

2014
Segolene Charaudeau Khashayar Pakdaman Pierre-Yves Boëlle

Commuting data is increasingly used to describe population mobility in epidemic models. However, there is little evidence that the spatial spread of observed epidemics agrees with commuting. Here, using data from 25 epidemics for influenza-like illness in France (ILI) as seen by the Sentinelles network, we show that commuting volume is highly correlated with the spread of ILI. Next, we provide ...

Journal: :Health economics 2009
Georg Gottholmseder Klaus Nowotny Gerald J Pruckner Engelbert Theurl

This paper analyzes the determinants of the perceived stress level of workers with a special focus on the effects of commuting, while controlling for personal and work-related characteristics. Using ordered logistic regression we find that several dimensions of the commuting situation, such as impedance, control and predictability of commuting, significantly influence the perceived stress level...

Journal: :journal of algebra and related topics 2014
m. alaeiyan l. pourmokhtar m. k. hosseinpoor

a graph is textit{symmetric}, if its automorphism group is transitive on the set of its arcs. in this paper, we  classifyall the connected cubic symmetric  graphs of order $36p$  and $36p^{2}$, for each prime $p$, of which the proof depends on the classification of finite simple groups.

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