Results 81 to 90 of about 105,759 (263)

Scaling‐Aware Rating of Poisson‐Limited Demand Forecasts

Journal of Forecasting, Volume 45, Issue 2, Page 787-805, March 2026.
ABSTRACT Forecast quality should be assessed in the context of what is possible in theory and what is reasonable to expect in practice. Often, one can identify an approximate upper bound to a probabilistic forecast's sharpness, which sets a lower, not necessarily achievable, limit to error metrics.
Malte C. Tichy, Illia Babounikau, Nikolas Wolke, Stefan Ulbrich, Michael Feindt   +4 more
wiley   +1 more source

Technologies and New Methods for Determining the Burning Rate of Solid Propellants [PDF]

فناوری در مهندسی هوافضا, 2019
The burning rate plays animportant role in determining the performanceandballistic behavior of solid rocket propellant. In this paper, the effect of various factorson burning rate, such as combustion chamber pressure, poropellant grain initial ...
Mohammad Ali Dehnavi, Reza Emami
doaj  

Tandem Takeoff: Powering Tomorrow with Industrial‐Grade Perovskite/Silicon Solar Cells

Advanced Energy Materials, Volume 16, Issue 5, 4 February 2026.
Perovskite/silicon tandem solar cells have recently achieved certified power conversion efficiencies of 34.85%, far exceeding the Shockley‐Queisser limit for single‐junction silicon and standalone perovskite cells. This review highlights the latest advances in the design, integration, and optimization of perovskite top cells for monolithic tandem ...
Maria Vasilopoulou, Di Huang, Jue Gong, Faming Li, Hao Zhang, Yinqing Sun, Lin Mao, Ermioni Polydorou, Ioannis G. Aviziotis, Leonidas C. Palilis, Onurcan Kaya, Stephan Roche, Jordi Arbiol, Dimitrios Davazoglou, Emmanuel Kymakis, Lei Liu, Kuan Sun, Abd Rashid bin Mohd Yusoff, Mingzhen Liu, Mohammad Khaja Nazeeruddin   +19 more
wiley   +1 more source

Effect of MAPO and T313 on the Rheological and Mechanical Properties of Composite Solid Propellant Based on HTPB [PDF]

فناوری در مهندسی هوافضا, 2019
Composite solid propellants have found wide spread applications in missile industries, such as high density, high specific impulse, and possibility of producing large scale grains.
Seyed Amanollah Mousavi Nodoushan, Yahya Ebrahim abadi, Navab Fathi, Hamed Sheikh hasani   +3 more
doaj  

Speed of Adjustment in Digital Assets in a Decentralized Financial World

Journal of Futures Markets, Volume 46, Issue 2, Page 320-333, February 2026.
ABSTRACT This paper investigates the stability and co‐movement of cryptocurrency assets in Decentralized Finance (DeFi), with a focus on the Speed of Adjustment (SA), the rate at which shocks dissipate, and prices revert to long‐run equilibrium. SA provides a critical measure of market efficiency and portfolio allocation in a highly volatile DeFi ...
Jeremy Eng‐Tuck Cheah, Thong Dao, Hung Do, Tapas Mishra   +3 more
wiley   +1 more source

Impact Reactivation of a Hydrothermal System in Basalt in the Vargeão Dome Impact Structure, Brazil

Journal of Geophysical Research: Planets, Volume 131, Issue 2, February 2026.
Abstract As hydrous minerals have been observed in impact craters on Mars, impact‐generated hydrothermal systems (IGHSs) have been considered as potential habitats for life on that planet. The Vargeão Dome, a 12 km wide impact structure in southern Brazil, was formed in basalts with at least two hydrothermal alteration stages.
Jitse Alsemgeest, Fraukje M. Brouwer, Luis F. Auqué, Kirsten van Zuilen, Natalia Hauser, Wolf Uwe Reimold   +5 more
wiley   +1 more source

Sustainable Water Systems in Space: A Review of Current Technologies and Future Prospects

Water Resources Research, Volume 62, Issue 2, February 2026.
Abstract Sustainable water management is a critical challenge in space exploration, where the limited availability of resources requires innovative approaches to ensure astronauts' survival on long‐duration missions. This narrative review explores the key technologies and methods involved in water recycling, in situ resource utilization (ISRU), and ...
David Bamidele Olawade, James O. Ijiwade, Ojima Zechariah Wada   +2 more
wiley   +1 more source

The Application of Computational Thermo-Fluid-Dynamics to the Simulation of Hybrid Rocket Internal Ballistics with Classical or Liquefying Fuels: A Review

Aerospace, 2019
The computational fluid dynamics of hybrid rocket internal ballistics is becoming a key tool for reducing the engine operation uncertainties and development cost as well as for improving experimental data analysis.
Giuseppe Daniele Di Martino, Carmine Carmicino, Stefano Mungiguerra, Raffaele Savino   +3 more
doaj   +1 more source

Diversity of design knowledge for launch vehicle in view of fuels on hybrid rocket engine

Journal of Advanced Mechanical Design, Systems, and Manufacturing, 2014
A single-stage launch vehicle with hybrid rocket engine, which uses solid fuel and liquid oxidizer, has been studied and developed as a next-generation rocket for scientific observation due to the advantages as low cost, safety, re-ignition, and reduced ...
Kazuhisa CHIBA, Masahiro KANAZAKI, Masaki NAKAMIYA, Koki KITAGAWA, Toru SHIMADA   +4 more
doaj   +1 more source

Measurement of Hybrid Rocket Solid Fuel Regression Rate for a Slab Burner using Deep Learning [PDF]

Acta Astronautica, 2021
Gabriel Surina, G. Georgalis, Siddhant S. Aphale, A. Patra, P. DesJardin   +4 more
semanticscholar   +1 more source