Results 71 to 80 of about 1,244,617 (252)

Integrating Image Segmentation and Deep Learning to Improve Radio Frequency Propagation Models

open access: yesInternational Journal of Satellite Communications and Networking, EarlyView.
ABSTRACT This paper proposes a multi‐sensor approach to improve radio frequency (RF) propagation models, which play a key role in the rapidly expanding field of connected vehicle technology. Focusing on the 1‐ to 20‐GHz frequency range, which is critical for both satellite‐to‐vehicle and base station‐to‐vehicle communications, our study introduces a ...
Jonathan Israel   +2 more
wiley   +1 more source

Optimizing Eco‐Industrial Park Site Selection for Circular Supply Chains: A Novel Hybrid Decision‐Making Approach

open access: yesSustainable Development, EarlyView.
ABSTRACT Eco‐Industrial Parks (EIPs) are critical infrastructure for transitioning to sustainable production and consumption patterns, enabling resource efficiency through industrial symbiosis. However, the success of these circular ecosystems depends heavily on strategic location planning that balances conflicting economic, environmental, and social ...
Ertugrul Ayyildiz, Betul Sasmazturk
wiley   +1 more source

Complexity Study on the Unsteady Flow Field and Aerodynamic Noise of High-Speed Railways on Bridges

open access: yesComplexity, 2018
To study complexity distributions of unsteady flow field and aerodynamic noise of a high-speed railway on bridges, an aerodynamic noise model of a railway was obtained.
Jufeng Su, Yamin Sun, Yuyang Liu
doaj   +1 more source

Combined annoyance response from railroad and road traffic noise in an alpine valley

open access: yesNoise and Health, 2020
Context: The aim of this study was to verify the contributing effect in the cases of combined road traffic noise and railroad traffic noise on total noise annoyance.
Christoph Lechner   +2 more
doaj   +1 more source

How Aligned Are Citizen Preferences With the 15‐Minute Cities Paradigm? An International Survey and K‐Means Clustering Study

open access: yesSustainable Development, EarlyView.
ABSTRACT This study investigates how citizens' mobility preferences align with the principles of the 15‐Minute City (15mC), addressing three research questions: what access times and transport modes citizens consider acceptable, whether mobility preference can be clustered, and which services are perceived incompatible with the 15mC.
Maria Perales‐Eguiluz   +3 more
wiley   +1 more source

Environmental Noise Characteristics Test for Tram Running in Small Radius Curved Section

open access: yesChengshi guidao jiaotong yanjiu
[Objective] Due to complex wheel-rail relationships, trams are prone to generating severe whistling noise when running on small radius curved sections of urban roads.
SUN Jifeng   +5 more
doaj   +1 more source

Parameters Studies on Surface Initiated Rolling Contact Fatigue of Turnout Rails by Three-Level Unreplicated Saturated Factorial Design

open access: yesApplied Sciences, 2018
Surface initiated rolling contact fatigue (RCF), mainly characterized by cracks and material stripping, is a common type of damage to turnout rails, which can not only shorten service life of turnout but also lead to poor running safety of vehicle.
Xiaochuan Ma   +3 more
doaj   +1 more source

Determinants of Perceived Public Value in PPPs for Urban Transport in Developing Contexts: An Ex‐Ante Structural Analysis of Guadalajara Light Rail Line 4

open access: yesSustainable Development, EarlyView.
ABSTRACT Public–private partnerships (PPPs) are widely used to deliver urban rail in developing contexts, although their contribution to public value remains contested. This paper offers an ex‐ante analysis of the determinants of perceived public value, using Mexico's Guadalajara Light Rail Line 4 as an illustrative case.
Vicente Pina   +3 more
wiley   +1 more source

Research of noise emission sources in railway transport and effective ways of their reduction

open access: yesMATEC Web of Conferences, 2017
In the EU conditions attention is systematically paid to noise reduction on the railways. Because TSI rules systematically tighten limits for noise emissions from railway vehicles, noise research must be addressed by all Member States, as the main ...
Zvolenský Peter   +3 more
doaj   +1 more source

Charging the polluters: A pricing model for road and railway noise [PDF]

open access: yes
This study outlines a method to estimate the short run marginal cost (SRMC) for road and railway noise. It is based on standardized calculation methods for total noise levels and monetary cost estimates from well established evaluation methods.
Ögren, Mikael, Andersson, Henrik
core  

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