Results 101 to 110 of about 62,066 (264)

Research on a Simplified Estimation Method for Wheel Rolling Resistance on Unpaved Runways

Applied Sciences
Aiming at the practical difficulties (e.g., high cost of full-scale tests) in testing the rolling resistance of aircraft wheels on unpaved runways, this study establishes a theoretical calculation formula for wheel rolling resistance based on the Bekker ...
Pengshuo Guo, Xiaolei Chong, Zihan Wang
doaj   +1 more source

REPRESENTING POLLUTION AT THE AGRARIAN–URBAN FRONTIER: Participatory Documentary Film‐Making in Bar Elias, Lebanon

International Journal of Urban and Regional Research, EarlyView.
Abstract The Beqaa Valley in Lebanon has become increasingly polluted, and residents are attributing illness to improper waste disposal and dumping. This article explores local epistemologies of pollution’s causes and effects in three films, which were researched and produced by local residents of Bar Elias, a small town in the Beqaa, which has rapidly
Hannah Sender, Hanna Baumann, Joana Dabaj   +2 more
wiley   +1 more source

Investigating the Geotechnical Properties of the Lunar South Pole with NASA VIPER’s Mobility System

The Planetary Science Journal
The NASA Volatiles Investigating Polar Exploration Rover (VIPER) is capable of assessing the geotechnical properties of the lunar south pole’s terrain, specifically as they pertain to terramechanics or the wheel–terrain interaction, combining the rover’s
Erin Rezich, Valentin T. Bickel, Parker L. Francis, Arno Rogg, Antoine Tardy, Colin Creager, Heather A. Oravec, Alexander Schepelmann, Kimberly Ennico-Smith, Ariel Deutsch, Masatoshi Hirabayashi   +10 more
doaj   +1 more source

Design of a compliant wheel for a miniature rover to be used on Mars [PDF]

The Jet Propulsion Laboratory has identified the need for a compliant wheel for a miniature martian rover vehicle. This wheel must meet requirements of minimum mass, linear radial deflection, and reliability in cryogenic conditions over a five year ...
Carroll, Mark, Johnson, Jess, Yong, Jimmy   +2 more
core   +1 more source

Dynamic effect of high speed railway traffic loads on the ballast track settlement [PDF]

, 2011
The traditional ballast track structures are still being used in high speed railways lines with success, however technical problems or performance features have led to non-ballast track solution in some cases.
Gabaldón Castillo, Felipe, Goicolea Ruigómez, José María, Nguyen Gia, Khanh   +2 more
core   +1 more source

The Non‐Understandable World of Autism Spectrum Disorder: A Therapist's Implicit Understanding and Subsequent Deepened Understanding

Journal of Analytical Psychology, EarlyView.
Abstract This paper examines the concept of non‐understandable in psychotherapy, based on the author's own play therapy with a boy with mild ASD (autism spectrum disorder). ASD is considered to belong to an area beyond comprehension, as psychotherapy is often deemed ineffective for it.
Toshio Kawai
wiley   +1 more source

Lunar material transport vehicle [PDF]

The proposed vehicle, the Lunar Material Transport Vehicle (LMTV), has a mission objective of efficient lunar soil material transport. The LMTV was designed to meet a required set of performance specifications while operating under a given set of ...
Fisher, Charles D., Lyons, Douglas, Whitehead, Harry C., Jr., Wilkins, W. Allen, Jr.   +3 more
core   +1 more source

Mechanische Bodenbelastung - Effekte auf Eigenschaften des Oberbodens und den Ertrag von Erbse in Reinsaat und im Gemenge [PDF]

, 2013
In organic agriculture legumes build the basis of soil fertility. A diminution of the legumes´ performance not only restricts their own yield but also the yield of the whole crop rotation.
Brandhuber, Robert, Bruns, Christian, Böhm, Herwart, Demmel, Markus, Gronle, Annkathrin, Lux, Guido, Schmidtke, Knut, Wild, Melanie   +7 more
core  

The effect of tyres and a rubber track at high axle loads on soil compaction-Part 2: Multi-axle machine studies

, 2008
This paper reports on a study of the effect of the passage of multi-axle harvesting machines on the soil physical properties. In particular, it investigates the effect of the rear tyre of a combine harvester on the amount of soil compaction subsequent to
Ansorge, Dirk, Godwin, R. J.
core   +1 more source

Heterogeneous Spillover Effects: How FDI in Resources Extraction, Manufacturing, and Services Affect Sectoral Carbon Emissions in the MENA Region

Natural Resources Forum, EarlyView.
ABSTRACT The MENA region faces a critical challenge: balancing economic growth spurred by foreign direct investment (FDI) with environmental sustainability. While FDI can bring technological advancements and capital, concerns exist about its potential to exacerbate environmental degradation, particularly carbon emissions.
Brahim Bergougui, Syed Mansoob Murshed
wiley   +1 more source