Results 101 to 110 of about 3,644,723 (252)

Air‐Pressure–Actuated Vibroacoustic Metamaterial With Tunable Bandgap: Design, Modeling, and Characterization

open access: yesAdvanced Engineering Materials, EarlyView.
This article presents the design, modeling, and characterization of air‐pressure–actuated programmable vibroacoustic metamaterials (PVAMM). The study focuses on leveraging air pressure to dynamically tune resonance frequencies for effective noise attenuation.
William Kaal   +2 more
wiley   +1 more source

System Interaction and Scenario-Based Simulation of Coupling Coordination Between Low-Carbon Transportation and High-Quality Economic Development in the Yellow River Jiziwan Metropolitan Area

open access: yesSystems
Clarifying the mutual feedback relationship and coordinated evolution characteristics between low-carbon transportation (LCT) and high-quality economic development (HQED) is of great significance for the green transformation of resource-based and ...
Yanfei Li, Cheng Li
doaj   +1 more source

Revealing the component structure of the world air transportation network. [PDF]

open access: yesAppl Netw Sci, 2021
Diop IM, Cherifi C, Diallo C, Cherifi H.
europepmc   +1 more source

Other title: Kansas Department of Transportation Update

open access: yes, 2007
application/pdf "January 22, 2007." Presentation to the Kansas Legislature, House Transportation and Public Safety Budget Committee, by staff of the Kansas Department of Transportation.Presentation providing a brief overview and update of the overall ...
Kansas. Department of Transportation.
core  

A Simplified Laminar Flow Model for the Pultrusion of Glass Fiber/Polyethylene Terephthalate Commingled Yarns

open access: yesAdvanced Engineering Materials, EarlyView.
A simplified thermoplastic pultrusion model is developed to predict thermal fields in glass fiber/polyethylene terephthalate (GF/PET) composites with reduced computational cost. By combining effective material homogenization, validation against literature data, and Gaussian‐process‐based optimization, the study reveals how heating limits, pulling speed,
Elder Soares   +3 more
wiley   +1 more source

The impact of COVID-19 on the worldwide air transportation network. [PDF]

open access: yesR Soc Open Sci, 2021
Bao X, Ji P, Lin W, Perc M, Kurths J.
europepmc   +1 more source

Transportation Acronym Guide, 1996

open access: yes
KB601/K6004This report compiles and identifies transportation and transportation-related acronyms throughout the Department of Transportation and other related U.S. government agencies. This is the second edition of the Transportation Acronym Guide (TAG);
Feldman, Richard N.   +2 more
core   +1 more source

Current Status and Challenges in Data Collection for Aerospace Coatings Deposited by Plasma Spraying

open access: yesAdvanced Engineering Materials, EarlyView.
An innovative approach has been integrated into the GRENAT project to optimize plasma spraying and coating performance. Raw materials are accelerated and melted in the plasma generated by torches, creating coatings. Monitoring sensors collect process data which are combined with ex situ characterization data.
Lila Randriamananjara   +8 more
wiley   +1 more source

Vaccination passports: Challenges for a future of air transportation. [PDF]

open access: yesTransp Policy (Oxf), 2021
Sun X, Wandelt S, Zhang A.
europepmc   +1 more source

Impacts of Productivity Changes on Profits, Prices, and Labor Compensation in Air Transportation: 1990\u20132001

open access: yes
The objective of the paper is to assess the impacts of productivity changes in air transportation since 1990 in three basic economic areas: 1) industry profits, 2) consumers/users of air transportation services, and 3) industry employees. In this regard,
Apostolides, Anthony D.   +1 more
core   +1 more source

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