Results 31 to 40 of about 6,790 (254)

Periodic Orbits for Billiards on an Equilateral Triangle [PDF]

open access: yesThe American Mathematical Monthly, 2008
Version 7: Minor edits made, some figures redrawn, Table 1 moved from appendix to body of text.
Andrew M. Baxter, Ronald Umble
openaire   +3 more sources

On the Maximum Number of Equilateral Triangles, I [PDF]

open access: yesDiscrete & Computational Geometry, 2000
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Bernardo M. Ábrego   +1 more
openaire   +2 more sources

The method of intelligent wireless sensor to improve the water permeability of permeable asphalt concrete pavement

open access: yesIET Networks, EarlyView., 2022
Abstract This research aims to study the intelligent wireless sensor to improve the water permeability of permeable asphalt concrete pavement. The water permeability of pavement is extremely important for the traffic environment. This study first briefly introduces the background and significance analysis, and then exemplifies the deployment algorithm ...
Xingmei Zhang, Cong Xu, Qi Lei
wiley   +1 more source

Initial and boundary value problems in two and three dimensions

open access: yes, 2010
This thesis: (a) presents the solution of several boundary value problems (BVPs) for the Laplace and the modified Helmholtz equations in the interior of an equilateral triangle; (b) presents the solution of the heat equation in the interior of an ...

core   +1 more source

Incorporation of Organic Counter‐Cations Into Poly(Heptazine Imide) Networks for Promoting Proton‐Coupled Electron Transfer During Photocatalytic H2O2 Evolution

open access: yesAngewandte Chemie, EarlyView.
Incorporation of N‐based onium ions into the ionic framework of poly(heptazine imide) was obtained via protonation‐deprotonation of PHI frameworks arising from a parent Na‐containing analogue. Particularly, methylammonium moieties, through their small molecular size, hydrogen bonding capabilities and rotational mobility, appear to stabilize ...
Dingqiao Ji   +6 more
wiley   +2 more sources

PEMODELAN PRODUKTIVITAS HYDRAULIC STATIC PILE DRIVER MENGGUNAKAN MODEL ANALITIS PADA TANAH BERLANAU

open access: yesJournal of Engineering and Management in Industrial System, 2016
Rapid urban growth has caused an increase of infrastructure and building construction projects in recent years in terms of project scale and number. Many of which certainly involve the construction of deep foundation, including pile foundation.
Joko Yulianto Eko Warsito   +1 more
doaj   +1 more source

Diagnostic Simplexes for Dissolved-Gas Analysis

open access: yesEnergies, 2020
A Duval triangle is a diagram used for fault type identification in dissolved-gas analysis of oil-filled high-voltage transformers and other electrical apparatus.
James Dukarm   +2 more
doaj   +1 more source

The flows structure in unsteady gas flow in pipes with different cross-sections

open access: yesEPJ Web of Conferences, 2017
The results of numerical simulation and experimental study of the structure of unsteady flows in pipes with different cross sections are presented in the article. It is shown that the unsteady gas flow in a circular pipe is axisymmetric without secondary
Plotnikov Leonid   +2 more
doaj   +1 more source

Geometrical Approaches for the Accurate Identification of Normal Vertical Positions of Sella and Nasion Points in Cephalograms

open access: yesInternational Journal of Dentistry, 2022
Objective. The aim of the study is to identify the normal vertical positions of sella (S) and nasion (N) points in subjects with a normal inclination of anterior cranial bases. Materials and Methods. Lateral cephalograms of 117 subjects who had a normal ∠
Ashok Kumar Jena   +4 more
doaj   +1 more source

Triple Coaxial-Half-Slot Antenna Scheme With Deep Learning-Based Temperature Prediction for Hepatic Microwave Ablation: Finite Element Analysis and In Vitro Experiment

open access: yesIEEE Access, 2021
This research proposes a triple-antenna scheme of three coaxial half slot antennas (CHSA) for minimally invasive hepatic microwave ablation (MWA).
Pattarapong Phasukkit   +1 more
doaj   +1 more source

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