Results 61 to 70 of about 10,666 (258)

Industry Portfolio Volatility Connections and Industry Portfolio Returns

International Journal of Finance &Economics, EarlyView.
ABSTRACT This paper tracks dynamic connections that form among daily US industry portfolio return volatilities using a Bayesian time‐varying parameter VAR model. Market participants often focus on sectors to filter vast amounts of information, and this focus results in cross‐industry return predictability. We characterise connections that form over the
Michael Ellington, Michalis Stamatogiannis, Yawen Zheng   +2 more
wiley   +1 more source

Harnessing cracks in metal films: Design strategies for stretchable conductors

InfoMat, EarlyView.
In stretchable electronics, metal film‐based components function either as strain‐insensitive interconnects/electrodes or as strain‐sensitive sensors, both of which are governed by crack‐induced electromechanical responses, yet these two roles have often been discussed separately in previous reviews.
Ting Zhu, Kai Wu, Gang Liu, Jun Sun
wiley   +1 more source

Aircraft Noise Monitoring in Function of Flight Safety and Aircraft Model Determination

Journal of Advanced Transportation, 2017
This paper presents the research of noise level monitoring at the Zagreb Airport Ltd. The purpose of this paper is to show how the aircraft noise sources can be used as a tool for aircraft detection and for increasing flight safety. The noise measurement
Andrija Vidović, Igor Štimac, Robert Zečević-Tadić   +2 more
doaj   +1 more source

Knowledge Integration in Professional Practices: Towards a New Transacting Approach

Knowledge and Process Management, EarlyView.
ABSTRACT This paper advances understanding of knowledge integration across professional boundaries by examining how professionals coordinate action in two life‐ and time‐critical settings: aircraft maintenance and emergency healthcare. Building on established knowledge integration perspectives, the study investigates situations in which actors must ...
Ann Svensson, Ritva Rosenbäck
wiley   +1 more source

Simultaneous Electrochemical and Inductively Coupled Plasma Optical Emission Spectroscopy Measurements on AA 7075

Materials and Corrosion, EarlyView.
Schematic representation of the operando ICP‐OES setup during the electrochemical experiment (left). Resulting plot showing the dissolution of the individual alloy components of AA7075 as a function of applied potential in 10 mM NaCl (right). ABSTRACT This publication deals with the simultaneous acquisition of electrochemical and inductively coupled ...
Claudia Kutzer‐Schulze, Michael Schneider, Alexander Michaelis   +2 more
wiley   +1 more source

Uncertainty, Sensitivity, and Efficiency Analysis of a Hybrid Piezoelectric–Electromagnetic Energy Harvester

International Journal of Mechanical System Dynamics, EarlyView.
ABSTRACT Digitalization and emerging technologies are increasing the demand for wireless sensing and the Internet of Things (IoT), which provide opportunities for autonomous sources of electricity in the form of energy harvesting systems. This paper focuses on the challenges in hybrid piezoelectric‐electromagnetic kinetic energy harvesting systems that
Petr Sosna, Damian Gaska, Zdeněk Hadaš
wiley   +1 more source

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

Detecting Loosening of Bolt‐Flanged Pipe Using Smoothed Pseudo Wigner–Ville Distribution: Digital Twin‐Based Approach Using Convolution Neural Networks

International Journal of Mechanical System Dynamics, EarlyView.
ABSTRACT In this paper, an integrated digital twin‐based fault‐diagnosis framework is proposed to detect bolt loosening in flanged pipe connections. The approach combines finite element‐based numerical modeling, experimental modal analysis, and advanced signal processing‐assisted deep learning to achieve reliable loosening detection under operational ...
Milad Shabani Yousefabad, Behzad Totakhaneh Bonab, Morteza Homayoun Sadeghi, Mir Mohammad Ettefagh, Mohammad Reza Chalak Qazani   +4 more
wiley   +1 more source

A Two‐Stage Optimization Approach for Selecting Electric‐Flight Airports

Networks, EarlyView.
ABSTRACT The decarbonization of short‐haul air transport has gained increasing attention, with electric aircraft emerging as a promising alternative to conventional short‐haul aviation. However, given the substantial investment anticipated for the necessary infrastructure, a strategic and globally coordinated selection of airports is imperative.
Imke Joormann, Frederic Kroner, Andreas M. Tillmann   +2 more
wiley   +1 more source

Aircraft noise and self-assessed mental health around a regional urban airport: a population based record linkage study

Environmental Health, 2018
Background Limited evidence suggests that residential exposure to aircraft noise negatively influences population mental health around large airports, but it is not known whether the same is true for smaller airports.
David M. Wright, Katherine Newell, Aideen Maguire, Dermot O’Reilly   +3 more
doaj   +1 more source