Results 81 to 90 of about 4,539,869 (304)

Total Distance, Wiener Index and Opportunity Index in Wreath Products of Star Graphs

open access: yesElectronic Journal of Combinatorics, 2019
In the last decades much attention has turned towards centrality measures on graphs. The Wiener index and the total distance are key tools to investigate the median vertices, the distance-balanced property and the opportunity index of a graph.
Matteo Cavaleri, A. Donno, A. Scozzari
semanticscholar   +1 more source

Wiener index of graphs with fixed number of pendant or cut-vertices [PDF]

open access: yesCzechoslovak Mathematical Journal, 2019
The Wiener index of a connected graph is defined as the sum of the distances between all unordered pairs of its vertices. We characterize the graphs which extremize the Wiener index among all graphs on n vertices with k pendant vertices.
Dinesh Pandey, K. Patra
semanticscholar   +1 more source

Extension of the Wiener index and Wiener polynomial

open access: yesApplied Mathematics Letters, 2008
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Eliasi, Mehdi, Taeri, Bijan
openaire   +1 more source

Collembola assemblages of fen meadows in the nature reserve Stroomdallandschap Drentsche Aa (Netherlands) – the preliminary study. [PDF]

open access: yes, 2010
Die Untersuchungen wurden auf Niedermoorwiesen im Naturschutzgebiet „Stroomdallandschap Drentsche Aa“ in den Niederlanden an fünf verschiedenen Stellen durchgeführt, an denen die Düngung eingestellt wurde (1, 5, 10, 25 und 32 Jahre).
Ehrnsberger, Rainer, Sterzynska, Maria
core  

Hydrogel‐Based Airway‐on‐Tube With Perfusable Endothelial Lumen and Outward Epithelialization

open access: yesAdvanced Materials, EarlyView.
A hydrogel‐based airway‐on‐tube platform featuring a perfusable endothelial lumen and outward epithelialization is presented. The system supports primary human bronchial epithelial and lung microvascular endothelial coculture under air‐liquid interface conditions.
Ali Doryab   +8 more
wiley   +1 more source

On the product formula and convolution associated with the index Whittaker transform

open access: yes, 2019
We deduce a product formula for the Whittaker $W$ function whose kernel does not depend on the second parameter. Making use of this formula, we define the positivity-preserving convolution operator associated with the index Whittaker transform, which is ...
Guerra, Manuel   +2 more
core   +1 more source

When Poor Exciton Dissociation Limits Photocurrents in Organic Solar Cells: Why Low Offset Non‐Fullerene Acceptor Blends Can't Be Efficient

open access: yesAdvanced Materials, EarlyView.
The energetic offset between the donor and the acceptor components in organic photoactive layers is central to the tradeoff between photovoltage and photocurrent losses. This Perspective covers the most important issues surrounding this topic in non‐fullerene acceptor blends, from the difficulty of accurately determining state energies and driving ...
Dieter Neher, Manasi Pranav
wiley   +1 more source

HYPER-WIENER INDEX OF ZIGZAG POLYHEX NANOTUBES [PDF]

open access: yesThe ANZIAM Journal, 2008
Abstract The hyper-Wiener index of a connected graph G is defined as $WW(G)=(1/4)\sum _{(u,v)\in V(G)\times V(G)}\big (d(u,v)+d(u,v)^2\big )$ , where V (G) is the set of all vertices of G and d(u,v) is the distance between the vertices u,v∈V (G).
Eliasi, Mehdi, Taeri, Bijn
openaire   +1 more source

The center of mass of the ISE and the Wiener index of trees

open access: yes, 2003
We derive the distribution of the center of mass $S$ of the integrated superBrownian excursion (ISE) {from} the asymptotic distribution of the Wiener index for simple trees. Equivalently, this is the distribution of the integral of a Brownian snake.
Chassaing, Philippe, Janson, Svante
core   +4 more sources

Tailoring the Morphology of MoS2 using RF Magnetron Sputtering for Enhanced Photoelectrochemical Water Splitting

open access: yesAdvanced Materials Interfaces, EarlyView.
Tailoring the morphology of MoS2 using RF Magnetron Sputtering for Enhanced Photoelectrochemical Water Splitting. ABSTRACT 2D molybdenum disulfide (MoS2) is a promising material for optoelectronic and photoelectrochemical (PEC) applications due to its unique properties.
Somnath Ladhane   +9 more
wiley   +1 more source

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