Results 41 to 50 of about 106,245 (282)

Signatures of mesospheric particles in ionospheric data [PDF]

open access: yesAnnales Geophysicae, 2009
The state of the ionosphere during the 2007 ECOMA/MASS campaign is described by in-situ observations by three sounding rockets launched from the Andøya Rocket Range and by ground based observations.
M. Friedrich   +5 more
doaj   +1 more source

Emerging Memory and Device Technologies for Hardware‐Accelerated Model Training and Inference

open access: yesAdvanced Electronic Materials, EarlyView.
This review investigates the suitability of various emerging memory technologies as compute‐in‐memory hardware for artificial intelligence (AI) applications. Distinct requirements for training‐ and inference‐centric computing are discussed, spanning device physics, materials, and system integration.
Yoonho Cho   +6 more
wiley   +1 more source

Rocket Measurement of Middle Atmospheric Ozone Concentration Profile By KSR-II [PDF]

open access: yesJournal of Astronomy and Space Sciences, 1998
KSR-II, a two-stage sounding rocket of KARI was launched successfully at the west coast of the Korean Peninsula at 1000LST, June 11, 1998. For the ozone measurement mission, 8-channel UV and visible radiometers were onboard the rocket.
Jhoon Kim   +6 more
doaj  

Dynamics of Sounding Rockets at Burnout [PDF]

open access: yesJournal of Spacecraft and Rockets, 1974
This paper describes a new "integrated method" that allows sounding-rocket development engineers to determine the effects of various perturbing moments on the oscillatory motion of the vehicle. Furthermore, since a pointmass trajectory, aerodynamic pitching and damping coefficients, and an aeroelastic analysis are required for the basic vehicle design,
WILLIAM C. WOMACK   +2 more
openaire   +1 more source

Ritualized reflection in human dissection: Liminality, ethical negotiation, and professional identity formation among South Korean medical students

open access: yesAnatomical Sciences Education, EarlyView.
Abstract Human dissection is a foundational component of medical education, yet it places students in profound ethical tension between scientific objectification and respect for human dignity. While prior studies have documented students' emotional responses, the structural transformation of their moral narratives over time, particularly within non ...
Jun‐Ki Lee   +2 more
wiley   +1 more source

Functional activity of plasmid DNA after entry into the atmosphere of earth investigated by a new biomarker stability assay for ballistic spaceflight experiments. [PDF]

open access: yesPLoS ONE, 2014
Sounding rockets represent an excellent platform for testing the influence of space conditions during the passage of Earth's atmosphere and re-entry on biological, physical and chemical experiments for astrobiological purposes.
Cora S Thiel   +6 more
doaj   +1 more source

Exploring Sustainable Growth: Eco‐Innovation Among Small and Medium‐Sized Enterprises

open access: yesBusiness Strategy and the Environment, EarlyView.
ABSTRACT We examined how small and medium‐sized enterprises (SMEs) in the aerospace industry developed capabilities for eco‐innovation, specifically SMEs enrolled in a green transition mentorship programme. To this end, we conducted multiple case studies over 2 years (August 2022 to November 2024) to gather data through semi‐structured interviews with ...
Coralie Gagné   +5 more
wiley   +1 more source

Sustainability and Scope: A Comparative Study of Discretion Making for Sustainability

open access: yesBusiness Strategy and the Environment, EarlyView.
ABSTRACT The measurability of sustainability is a subject of ongoing debate. Discretion is an important antecedent to such valuation yet remains largely unaddressed. Thus, we conduct a cross‐case study of four organizations, finding differences between product and service firms in how they define their sustainability discretion, which is shaped by and,
Annabelle Müller
wiley   +1 more source

Dual‐Function Electrocatalysis: Simultaneous Wastewater Remediation and Hydrogen Evolution—A Comprehensive Review

open access: yesCarbon Energy, EarlyView.
Replacing the oxygen evolution reaction with the electro‐oxidation of pollutants and waste streams offers an energy‐efficient route for simultaneous hydrogen production and pollutant remediation. This review summarizes the reaction mechanisms, catalyst design principles, and emerging paired‐electrolysis strategies that govern activity, selectivity ...
Safa Al‐Yahyaey   +4 more
wiley   +1 more source

Development of Green Storable Hybrid Rocket Propulsion Technology Using 98% Hydrogen Peroxide as Oxidizer

open access: yesAerospace, 2021
This paper presents the development of indigenous hybrid rocket technology, using 98% hydrogen peroxide as an oxidizer. Consecutive steps are presented, which started with interest in hydrogen peroxide and the development of technology to obtain High ...
Adam Okninski   +9 more
doaj   +1 more source

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