Results 71 to 80 of about 9,883 (263)

Innovation and Growth Investment Through Capital Expenditure as a Channel and Boundary Condition Between Financial Performance and Corporate Reputation

Corporate Social Responsibility and Environmental Management, EarlyView.
ABSTRACT This study examines the role of capital expenditure in the relationship between financial performance and corporate reputation. Using moderation and mediation analyses based on multiple regressions with bootstrapping, we examined data from 121 airlines from 46 countries during 2007–2023.
Larissa M. Batrancea, Andreas‐Daniel Cocis, Ioan Dan Morar   +2 more
wiley   +1 more source

Hybrid propulsion aircraft

, 2023
The growing efforts to reduce emissions in aviation may benefit from the use of hybrid propulsion, which is the topic of this bachelor’s thesis. The first section presents an overview of the impact of aviation on the environment as well as further ...
Křivánek, Michal
core   +1 more source

Aircraft landing gear extension and retraction control system diagnostics, prognostics and health management [PDF]

, 2012
This thesis contains the Group Design Project (GDP) work and Individual Research Project (IRP) work. The target of this GDP was to design a long range flying wing passenger aircraft to meet the increasing global aircraft demand.
Yang, Yang
core  

A conceptual design methodology for evaluation of alternate propulsion system modifications on small aircraft

, 2019
Conceptual design is often considered to be the most important step in the design of a new product or the modification of an existing product. The important steps in this conceptual design phase is the synthesis of potential solutions into concepts, the ...
Williams, Warren Raymond
core   +1 more source

Enhancing hydrogen evolution reaction by harnessing bubble dynamics regulation: Principles, methods, and outlook

Droplet, EarlyView.
Bubble dynamics pose critical bottlenecks to hydrogen evolution reaction efficiency, causing active site isolation, increased ohmic resistance, and concentration overpotential, especially at high current densities. This review comprehensively summarizes passive and active bubble manipulation strategies, elucidates their underlying principles, and ...
Ziwei Guo, Chunhui Zhang, Yunxun Liu, Yi Han, Jinghang Pan, Lingyao Zhang, Chuanqi Nie, Yuejing Zhao, Kesong Liu, Cunming Yu, Lei Jiang   +10 more
wiley   +1 more source

Analysis of Interactions Among Loss-Generating Mechanisms in Axial Flow Turbines

International Journal of Turbomachinery, Propulsion and Power
Accurate loss prediction since the preliminary design steps is crucial to improve the development process and the aerodynamic performance of turbines.
Greta Raina, Yannick Bousquet, David Luquet, Eric Lippinois, Nicolas Binder   +4 more
doaj   +1 more source

FAME

, 2023
Green hydrogen as a fuel offers the possibility to significantly reduce or even eliminate all of aircraft’s greenhouse gas emissions. When liquid hydrogen (LH2) is used in fuel cells (FC) for power generation, this results in no CO2, no SOx and no NOx ...
Salvatore Corcione, Mario Di Stasio, Fabrizio Nicolosi, Agostino De Marco, Pierluigi Della Vecchia   +4 more
core  

Fault Detection of Electric Motors via Symmetrized Dot Pattern‐Based Features

International Journal of Mechanical System Dynamics, EarlyView.
ABSTRACT This study proposes a novel symmetrized dot pattern (SDP) approach using designed SDP‐based features, extracted from transformed vibration signals, for fault detection. These features describe the compactness, inclination, and shape of the “snowflake” diagram distributions.
Mario Spirto, Pierangelo Malfi, Armando Nicolella, Francesco Melluso, Chiara Cosenza, Sergio Savino, Vincenzo Niola   +6 more
wiley   +1 more source

Flow field and emission characterization of a novel enclosed jet-in-hot-coflow canonical burner

Applications in Energy and Combustion Science
The jet-in-hot-coflow is a canonical combustion setup, which has been used in several studies to study Flameless/MILD combustion and auto-ignition of fuels.
Thimo van den Berg, Rishikesh Sampat, Arvind Gangoli Rao   +2 more
doaj   +1 more source

Multi-Objective Optimization Control for the Aerospace Dual-Active Bridge Power Converter

Energies, 2018
With the development of More Electrical Aircraft (MEA), the electrification of secondary power systems in aircraft is becoming more and more common. As the key power conversion device, the dual active bridge (DAB) converter is the power interface for the
Tao Lei, Cenying Wu, Xiaofei Liu
doaj   +1 more source