Results 131 to 140 of about 1,012,550 (289)

The Perceived Beauty of Regular Polygon Tessellations

open access: yes, 2019
Beauty judgments for regular polygon tessellations were examined in two experiments. In experiment 1 we tested the three regular and eight semi-regular tilings characterized by a single vertex.
Jay Friedenberg
core   +1 more source

Linking community structure and climate vulnerability in desert plant assemblages of southern California

open access: yesAmerican Journal of Botany, EarlyView.
Abstract Premise Desert plant assemblages in southern California provide an opportunity to link patterns of community structure with climate‐driven vulnerability in a rapidly changing environment. California sustains an exceptionally diverse flora of approximately 4300 plant species, with 31% identified as endemic.
Hector Zumbado‐Ulate   +4 more
wiley   +1 more source

The three-dimensional art gallery problem and its solutions [PDF]

open access: yes, 2012
This thesis addressed the three-dimensional Art Gallery Problem (3D-AGP), a version of the art gallery problem, which aims to determine the number of guards required to cover the interior of a pseudo-polyhedron as well as the placement of these guards ...
Jefri Marzal, Marzal, Jefri
core  

Nanofabricated Biomaterials Model Tumor Extracellular Matrix Topography

open access: yesAdvanced NanoBiomed Research, EarlyView.
The unique structure and composition of the tumor microenvironment and its associated extracellular matrix (ECM) exert profound effects on cancer cell behavior that are difficult to model in vitro. This perspective discusses the utility of nanofabricated biosubstrates, such as the novel collagen‐coated nanogrooved array, for recapitulating the ...
Vic Zamloot, JinSeok Park
wiley   +1 more source

Products of diagonal lengths in the regular polygon

open access: yes, 2014
A regular polygon is scaled up in size so that its side length equals the length of some diagonal from the smaller polygon (the magnification diagonal). The diagonal lengths in the large polygon are seen to be sums of those in the smaller.
Hurley, Susan
core  

Electrospun PVDF/BaTiO3‐TiO2 Nanocomposite Yarns for Piezoelectric Energy Harvesting

open access: yesJournal of Applied Polymer Science, EarlyView.
Hybrid BTO‐TiO2 nanofillers integrated into electrospun PVDF fibers significantly enhance β‐phase formation and piezoelectric performance. The resulting nanocomposite fibers and twisted yarns generate high voltage and power output under mechanical stimulation.
Swathi Yempally   +4 more
wiley   +1 more source

Buckling stability analysis of AFGM heavy columns with nonprismatic solid regular polygon cross-section and constant volume

open access: yesScience and Engineering of Composite Materials
This work presents a comprehensive analysis of buckling stability of axially functionally graded material (AFGM) heavy columns with nonprismatic solid regular polygon cross-section (RPCS) and constant volume.
Lee Byoung Koo   +3 more
doaj   +1 more source

The Polygon Game [PDF]

open access: yes, 2007
The Polygon Game ‐ Take a regular, n‐sided polygon (i.e. a regular n‐gon) and the set of numbers, {1, 2, 3, …, (2n‐2), (2n‐1), 2n}. Place a dot at each vertex of the polygon and at the midpoint of each side of the polygon.
Hall, Kyla
core  

PbAT: A user‐friendly R/Shiny platform for data‐driven decision support in crop improvement

open access: yesApplications in Plant Sciences, EarlyView.
Abstract Premise Modern plant breeding requires robust analysis of complex, multi‐environment datasets to identify superior genotypes. Although R offers powerful statistical packages, their use often requires programming expertise. Existing graphical user interface (GUI)‐based tools are either limited in scope or not openly accessible, leaving breeders
Krishnan P. Abhijith   +6 more
wiley   +1 more source

Hepatic morphology and serum biochemical profile according to dry and rainy seasons in Pygocentrus nattereri (Characiformes: Serrasalmidae)

open access: yesThe Anatomical Record, EarlyView.
Abstract This study investigated the physiological and morphological adaptations of the liver of the carnivorous fish Pygocentrus nattereri (piranha) in response to seasonal variations (dry and rainy seasons) in the Brazilian Pantanal. The objective was to describe how the liver, a central organ in metabolic regulation, responds to environmental ...
Maria Eduarda Corona Garcia   +9 more
wiley   +1 more source

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