Results 31 to 40 of about 1,521,016 (268)

Fermi-Walker Parallel Transport According to Quasi Frame in Three Dimensional Minkowski Space

open access: yesJournal of Geometry and Symmetry in Physics, 2019
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Gürbüz, Nevin, Yoon, Dae W.
openaire   +4 more sources

Gaze control system for tracking Quasi-1D high-speed moving object in complex background

open access: yesSystems Science & Control Engineering, 2022
A gaze control system for tracking Quasi-1D high-speed moving object is proposed, it can keep the object in the centre of the image within a certain range.
Shuqiao Geng   +4 more
doaj   +1 more source

The Effect of A Process Approach Using Report Writing Frame on Students’ Writing Achievement

open access: yesIJET (Indonesian Journal of English Teaching), 2017
This study is aimed at investigating the effect of process approach using Report Writing Frame on students’ writing achievement. The design of this study was quasi-experimental design.
Khoiriyatul Hariro
doaj   +1 more source

Inverse Identification of Energy‐Dependent Laser Absorptivity in NiTi Laser Powder‐Bed Fusion via Calibrated Melt Pool Simulation

open access: yesAdvanced Engineering Materials, EarlyView.
A combined experimental–computational framework identifies energy‐dependent laser absorptivity for NiTi in laser powder‐bed fusion, applicable to conduction and transition modes. Single‐track experiments and thermofluid smoothed particle hydrodynamics simulations are coupled through inverse analysis of melt pool geometry.
Mohamadreza Afrasiabi   +3 more
wiley   +1 more source

Controlling Grain Growth in Powder Bed Fusion of Yttria‐Stabilized Zirconia Using Femtosecond Lasers: Challenges and Methodological Insights

open access: yesAdvanced Engineering Materials, EarlyView.
Binder‐free laser powder bed fusion of 8YSZ with a femtosecond laser is used to map process windows linking scan strategy, heat accumulation, and grain growth. Time‐resolved thermography and simulations reveal thermal regimes that enable continuous, vitrified, and fine‐grained 8YSZ surface layers without absorptive additives and demonstrate ...
Markus Kühn   +5 more
wiley   +1 more source

Validation of European Gravimetric Geoid models in context of realization of EVRS system in Poland [PDF]

open access: yesGeodesy and Cartography, 2019
In this study, several variants create and choose of a local quasi-geoid model in Poland have been considered. All propositions have a source in European Gravimetric Geoid models – EGG2008 and EGG2015, which are purely gravimetric models of reference ...
Dorota Marjańska   +2 more
doaj   +1 more source

Curves of Constant Ratio with Quasi frame in E^3

open access: yesTürk Doğa ve Fen Dergisi
In the present study we handle a regular unit speed curve by means of the position vector given by the vectorial equation γ (s)=m0 t(s)+m1 nq (s)+m2 bq (s) where bq (s), nq (s) and t(s) are quasi frame vectors. Firstly, we analysis these curves and investigate to being constant ratio curve.
Rabia Kalmuk   +2 more
openaire   +2 more sources

Simulation‐Based Analysis of Insert Pull‐Out in Nickel‐Polyurethane Hybrid Foams Using CT‐Derived Geometries

open access: yesAdvanced Engineering Materials, EarlyView.
CT‐based finite element simulations combined with in situ X‐ray computed tomography are used to analyze insert pull‐out in nickel‐coated polymer foams. Despite variations in material parameters, deformation consistently concentrates within a narrow annular region around the insert.
Yannik Bautz   +4 more
wiley   +1 more source

Two-Dimensional Underdetermined DOA Estimation of Quasi-Stationary Signals using Parallel Nested Array [PDF]

open access: yesRadioengineering, 2020
In this paper, a two dimensional underdetermined direction of arrival estimation (DOA) of quasi-stationary signals using a parallel nested array structure is investigated.
X. Y. Pan   +3 more
doaj  

DINAMIC FORCES IN THE ECCENTRICALLY COMPRESSED MEMBERS OF REINFORCED CONCRETE FRAMES UNDER ACCIDENTAL IMPACTS

open access: yesInternational Journal for Computational Civil and Structural Engineering, 2022
Interest to solving scientific problems related to the evaluation of facilities' resistance and its protection against progressive collapse increases and attracts more and more attention of specialists in the field of structural analysis and design ...
Sergey Savin   +2 more
doaj   +1 more source

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