Results 61 to 70 of about 10,099,680 (281)

Context and Progress of Domestic and International Low-Altitude Economic Research Based on the CiteSpace Software

open access: yesRedai dili
As an important economic form for the innovation and development of human society, since the 21st century, the low-altitude economy has become one of the key ways to promote China's modern industrial development, with its unique charm and broad ...
Liao Wang   +3 more
doaj   +1 more source

The Feasibility Test of Electric Propulsion Systems: Case Study for a Light and Fixed‐Wing Aircraft

open access: yesEnergy Science &Engineering, EarlyView.
ABSTRACT This study investigates the feasibility and performance of a fully electric propulsion system (EPS) integrated into a light fixed‐wing aircraft. The system consists of a 65 kW‐class electric motor, a high‐efficiency inverter, and dual lithium‐ion battery packs with a total capacity of 27 kWh—collectively engineered to fulfill both power ...
Byeong Gyu Gang
wiley   +1 more source

Perceived Privacy Invasion and Consumer Adoption Willingness of AI-Powered Personalized Recommendations: The Mediating Role of Psychological Resistance and Moderating Role of Perceived Algorithm Transparency

open access: yesJournal of Theoretical and Applied Electronic Commerce Research
Artificial intelligence (AI)-powered personalized recommendation systems can enhance relevance and convenience, but their reliance on extensive personal data processing may also heighten users’ perceptions of privacy intrusion.
Xiaolan Zhu   +3 more
doaj   +1 more source

Spatiotemporal correlation patterns and influencing factors of low-altitude economy manufacturing in Pearl River Delta urban agglomeration [PDF]

open access: yesZiyuan Kexue
[Objective] This study aims to analyze the spatial distribution of the low-altitude economy manufacturing, along with the spatiotemporal correlation patterns and influencing factors of its industry and innovation chains.
FENG Yuman, MA Li, JIN Fengjun, YE Zhicong
doaj   +1 more source

Head-on collisions of boson stars

open access: yes, 2007
We study head-on collisions of boson stars in three dimensions. We consider evolutions of two boson stars which may differ in their phase or have opposite frequencies but are otherwise identical.
Olabarrieta, I.   +3 more
core   +1 more source

A Multi‐Software Approach to Assessing Photovoltaics Integration in Modern Enovoltaic Systems

open access: yesEnergy Science &Engineering, EarlyView.
Robust eno‐PV design methodology applied to a real case study Multi‐software 3D model developed to optimize PV panels‐vineyard configuration Energy yield nearly independent of tracker height, but reduced by wider row spacing Grape productivity improving with height and decreasing with spacing Energy generation and grape yield balanced by tuning PV ...
Erika Stracqualursi   +3 more
wiley   +1 more source

Airline Carbon Emission Efficiency Study: Static and Dynamic Perspectives

open access: yesMathematical and Computational Applications
Amid the rapid growth of the aviation sector, carbon reduction presents a significant challenge for airlines. This study investigates the structural characteristics and dynamic evolution of carbon emission efficiency among 18 global airlines from 2015 to
Lianbin Zhou   +3 more
doaj   +1 more source

Harnessing high altitude solar power [PDF]

open access: yes, 2009
As an intermediate solution between Glaser's satellite solar power (SSP) and ground-based photovoltaic (PV) panels, this paper examines the collection of solar energy using a high-altitude aerostatic platform.
Markvart, T   +7 more
core   +1 more source

Creation of a Landslide Susceptibility Map Using Short‐Term Data From the July 2018 Heavy Rainfall in Southern Hiroshima Prefecture

open access: yesGeological Journal, EarlyView.
This work advances landslide susceptibility mapping by incorporating short‐term trigger data with landscape susceptibility mapping. We also examine the importance of downsampling, watershed delineation and geospatial correlations in evaluating outcomes.
Kanta Kotsugi   +3 more
wiley   +1 more source

A passive high altitude deorbiting strategy [PDF]

open access: yes, 2011
A deorbiting strategy for small satellites, in particular CubeSats, is proposed which exploits the effect of solar radiation pressure to increase the spacecraft orbit eccentricity so that the perigee falls below an altitude where atmospheric drag will ...
Colombo, Camilla   +2 more
core   +3 more sources

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