Results 161 to 170 of about 38,920 (290)

Toward Efficient Urban Form in China [PDF]

open access: yes
Land efficiency in urban China is examined, using Tianjin as a case study, from the perspective of agricultural land conservation; reduction in energy use, conventional pollution, and greenhouse gas emissions; and human time savings.
Bertaud, Alain   +3 more
core  

Prototyping an Innovative Ducted Fan System With Multi‐element Wings for the Electric Propulsion of Flying Devices

open access: yesMacromolecular Symposia, EarlyView.
ABSTRACT This paper presents theoretical aspects and experimental tests for the design and optimization of a novel ducted fan propulsion system, complemented by multi‐element wings inspired by Handley Page and the aerodynamic Channel Wing concept.
Adrian Niță   +4 more
wiley   +1 more source

Evaluation of the Shock Absorption Capacity of Polymeric Specimens Manufactured by 3D Printing

open access: yesMacromolecular Symposia, EarlyView.
ABSTRACT In the current context, due to the accelerated development of additive manufacturing, parts made of polymeric materials such as polylactic acid (PLA) manufactured by 3D printing are increasingly used. Such applications can be used, for example, in situations involving dynamic loads, where the shock energy absorption properties are essential ...
Alexandra‐Anamaria Spiridon   +5 more
wiley   +1 more source

Inference about Realized Volatility using Infill Subsampling [PDF]

open access: yes
We investigate the use of subsampling for conducting inference about the quadratic variation of a discretely observed diffusion process under an infill asymptotic scheme.
Ilze Kalnina, Oliver Linton
core  

FDM 3D Printed Automotive Spoilers: A Simplified Cost Analysis

open access: yesMacromolecular Symposia, EarlyView.
ABSTRACT Additive manufacturing (AM) has become an attractive alternative for producing customized and low‐volume automotive components, particularly in the aftermarket sector. This study presents a simplified theoretical cost analysis for manufacturing an automotive rear spoiler using fused deposition modeling (FDM).
Florin ‐ Ștefan JINGA, Irina SEVERIN
wiley   +1 more source

Investigation of the Critical Overhang Angle in Fused Filament Fabrication Technology

open access: yesMacromolecular Symposia, EarlyView.
ABSTRACT In fused filament fabrication, overhangs are challenging because each deposited layer requires partial support from the previous layer. The frequently cited 45° guideline for unsupported printing originates from empirical practice and does not consistently represent process‐specific behavior.
Nicolae Razvan Mititelu   +4 more
wiley   +1 more source

Implications of heterogeneous embankment conditions for geoelectrical investigations on dams: A case study at Mactaquac Dam, Canada

open access: yesNear Surface Geophysics, EarlyView.
Abstract Electrical resistivity tomography (ERT) has been shown to be effective for surveying and monitoring dams, due to the method's sensitivity to moisture content and relevant physical properties (e.g., porosity). Automated ERT systems, capable of time‐lapse monitoring, can be used to detect variations in ground conditions.
John S. Ball   +4 more
wiley   +1 more source

2015 UDIA state of the land report [PDF]

open access: yes
Providing enough new serviced land in our cities and towns is the key to successfully accommodating our growing population, and is a major challenge for policy makers at all levels of government.
Urban Development Institute of Australia
core  

Enhancing the Performance of 3D‐Printed Polyamide Composites Through Pre‐ and Post‐Processing Methods

open access: yesPolymer Composites, EarlyView.
FDM‐printed polyamide composites and post‐processing by annealing. ABSTRACT In this study, composite filaments with a short carbon fiber (CF) reinforced polyamide 612 (PA612) were produced using the FDM method at three different raster angles (0°, ±45°, 90°).
Busra Eyri   +3 more
wiley   +1 more source

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