scholarly journals Unique-Maximum and Conflict-Free Coloring for Hypergraphs and Tree Graphs

2013 ◽  
Vol 27 (4) ◽  
pp. 1775-1787 ◽  
Author(s):  
Panagiotis Cheilaris ◽  
Balázs Keszegh ◽  
Dömötör Pálvölgyi
Keyword(s):  
Tree Graphs ◽  
Unique Maximum

scholarly journals Decentralized Optimization Over Tree Graphs

2021 ◽  
Author(s):  
Yuning Jiang ◽  
Dimitris Kouzoupis ◽  
Haoyu Yin ◽  
Moritz Diehl ◽  
Boris Houska
Keyword(s):  
Decentralized Optimization ◽  
Tree Graphs

scholarly journals Edge irregular reflexive labeling on banana tree graphs B2,n and B3,n

2021 ◽  
Author(s):  
Jihan Almaas Novelia ◽  
Diari Indriati
Keyword(s):  
Banana Tree ◽  
Tree Graphs

Hub height optimisation of commercial WTGs based on accurate wind resource analysis

2021 ◽  
pp. 0309524X2110227
Author(s):  
Kyle O Roberts ◽  
Nawaz Mahomed
Keyword(s):  
Power Generation ◽  
Wind Turbine ◽  
Wind Power ◽  
Capacity Factor ◽  
Resource Analysis ◽  
Wind Speeds ◽  
Unique Maximum ◽  
Wind Measurements ◽  
Generation Capacity ◽  
Wind Resource

Wind turbine selection and optimal hub height positioning are crucial elements of wind power projects. However, in higher class wind speeds especially, over-exposure of wind turbines can lead to a reduction in power generation capacity. In this study, wind measurements from a met mast were validated according to specifications issued by IRENA and NREL. As a first step, it is shown that commercial WTGs from a database may be matched to the wind class and turbulence intensity. Secondly, a wind turbine selection algorithm, based on maximisation of capacity factor, was implemented across the range of WTGs. The selected WTGs were further exposed to an iterative algorithm using pointwise air density and wind shear coefficients. It is shown that a unique maximum capacity factor, and hence wind power generation, exists for a wind turbine, premised on its eventual over-exposure to the wind resource above a certain hub height.

On connectivities of tree graphs

1988 ◽  
Vol 12 (3) ◽  
pp. 453-459 ◽  
Author(s):  
Guizhen Liu
Keyword(s):  
Tree Graphs

Optimal Flow Control and Single Split Architecture Exploration for Fluid-Based Thermal Management

2018 ◽  
Author(s):  
Satya R. T. Peddada ◽  
Daniel R. Herber ◽  
Herschel C. Pangborn ◽  
Andrew G. Alleyne ◽  
James T. Allison
Keyword(s):  
Flow Control ◽  
Thermal Management ◽  
High Performance ◽  
Dynamic Models ◽  
Cooling System ◽  
Rooted Tree ◽  
Modeling Framework ◽  
System Architectures ◽  
Tree Graphs ◽  
Heat Loads

High-performance cooling is often necessary for thermal management of high power density systems. Both human intuition and vast experience may not be adequate to identify optimal thermal management designs as systems increase in size and complexity. This paper presents a design framework supporting comprehensive exploration of a class of single phase fluid-based cooling architectures. The candidate cooling system architectures are represented using labeled rooted tree graphs. Dynamic models are automatically generated from these trees using a graph-based thermal modeling framework. Optimal performance is determined by solving an appropriate fluid flow control problem, handling temperature constraints in the presence of exogenous heat loads. Rigorous case studies are performed in simulation, with components having variable sets of heat loads and temperature constraints. Results include optimization of thermal endurance for an enumerated set of 4,051 architectures. In addition, cooling system architectures capable of steady-state operation under a given loading are identified.

On the Realization of Tree Graphs

1968 ◽  
Vol 15 (3) ◽  
pp. 271-273 ◽  
Author(s):  
G. Kishi ◽  
Y. Kajitani
Keyword(s):  
Tree Graphs

The tree graphs theory for enzymatic reactions

1976 ◽  
Vol 59 (1) ◽  
pp. 159-166 ◽  
Author(s):  
F. Solimano ◽  
E. Beretta
Keyword(s):  
Enzymatic Reactions ◽  
Tree Graphs

The Harary index of ordinary and generalized quasi-tree graphs

2013 ◽  
Vol 45 (1-2) ◽  
pp. 365-374 ◽  
Author(s):  
Kexiang Xu ◽  
Jinlan Wang ◽  
Hongshuang Liu
Keyword(s):  
Harary Index ◽  
Tree Graphs
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