Results 31 to 40 of about 2,443,466 (313)

A Benchmarking Algorithm to Determine Minimum Aggregation Delay for Data Gathering Trees and an Analysis of the Diameter-Aggregation Delay Tradeoff

open access: yesAlgorithms, 2015
Aggregation delay is the minimum number of time slots required to aggregate data along the edges of a data gathering tree (DG tree) spanning all the nodes in a wireless sensor network (WSN).
Natarajan Meghanathan
doaj   +1 more source

On the Diameter of Tree Associahedra [PDF]

open access: yesThe Electronic Journal of Combinatorics, 2018
We consider a natural notion of search trees on graphs, which we show is ubiquitous in various areas of discrete mathematics and computer science. Search trees on graphs can be modified by local operations called rotations, which generalize rotations in binary search trees. The rotation graph of search trees on a graph $G$ is the skeleton of a polytope
Jean Cardinal   +2 more
openaire   +4 more sources

Diameter-Dependent Semiconducting Carbon Nanotube Network Transistor Performance

open access: yes, 2022
Single-walled carbon nanotube (SWCNT) network based devices show application potentials due to their extraordinary electric and optical properties, and the device performance is largely determined by the network morphology and tube–tube junction ...
Zhao Li (300229)   +2 more
core   +1 more source

On the Circuit Diameter Conjecture [PDF]

open access: yesDiscrete & Computational Geometry, 2018
From the point of view of optimization, a critical issue is relating the combinatorial diameter of a polyhedron to its number of facets $f$ and dimension $d$. In the seminal paper of Klee and Walkup [KW67], the Hirsch conjecture of an upper bound of $f-d$ was shown to be equivalent to several seemingly simpler statements, and was disproved for ...
Steffen Borgwardt   +2 more
openaire   +2 more sources

Volume quantity and percentage of Beech industrial, fuel and stump timber portions at Caspian Forests of Iran [PDF]

open access: yesتحقیقات جنگل و صنوبر ایران, 2005
The aim of the study was to investigate the volume and amount of the Beech (Fagus orientalis) industrial, Fuel and stump timber portions at west forests of Gilan province in Caspian Region of Iran.
Farrokh Poorshakoori Allahdeh   +1 more
doaj  

Stem taper models for maritime pine plantations in Istanbul Sarıyer Region

open access: yesTurkish Journal of Forestry, 2020
Maritime pine (Pinus pinaster Ait.) is one of the most important tree species in Turkey for establish industrial plantations. In this study, stem taper models were developed for maritime pine plantations in İstanbul-Sarıyer region.
Utkun Karakuyu, Ramazan Ozçeli̇k
doaj   +1 more source

Comparison of height, diameter and wood production of 14 Poplar clones in Esfahan province [PDF]

open access: yesتحقیقات جنگل و صنوبر ایران, 2008
Poplar trees are the fastest growing trees in the northern hemisphere and it woods is suitable for a variety uses and they are the most important resource of wood production. For this reason they are best plant for wood culture.
Haydar Ali Daneshvar   +1 more
doaj  

The fault-diameter and wide-diameter of twisted hypercubes

open access: yesDiscrete Applied Mathematics, 2018
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Hao Qi 0001, Xuding Zhu
openaire   +1 more source

Investigation on Adaptability and Quantitative Properties of Redwood (Sequoia sempervirens) in north of Iran, Mazandaran province. [PDF]

open access: yesتحقیقات جنگل و صنوبر ایران, 2004
A 19 year old plantation (4×4m) of Redwood on an area of 0.16 ha was selected in Chamestan Experimental Station in Mazandaran Province (North Iran). Results indicate that mean of diameter at breast height ,height and volume per hectar were 31/8cm ,15/15m
Sayyed Reza Mostafanezhad   +1 more
doaj  

Amount of carbon sequestration distribution associated with oak tree’s (Quercus castaneifolia C.A. May) bole in relation to physiographical units of Hyrcanian natural forests of Iran [PDF]

open access: yesتحقیقات جنگل و صنوبر ایران, 2014
Carbon sequestration rate of forest trees and their spatial pattern are prominent factors which affect global carbon dynamic and can be basically applied to predict climate change.
Ali Asghar Vahedi, Asadollah Mattagi
doaj   +1 more source

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