Results 81 to 90 of about 38,437 (282)

The Dynamics of European Economic Systems Amid the Russia–Ukraine Conflict: A Cybernetics Approach

open access: yesThe American Journal of Economics and Sociology, EarlyView.
ABSTRACT This study analyzes the dynamics of European economic systems in the context of the Russia–Ukraine conflict, employing a cybernetics approach and advanced econometric models. Based on the premise that national economies operate as complex adaptive systems, the study investigates the impact of geopolitical shocks on macroeconomic equilibrium ...
Ionuț Nica   +3 more
wiley   +1 more source

A Soviet quasi-market for inventions : jet propulsion, 1932–1946 [PDF]

open access: yes
This paper is about how a command system allocated resources under profound uncertainty. The command system was the Soviet economy, the period was Stalin's dictatorship, and the resources were designated for military research & development.
Harrison, Mark
core   +1 more source

Left to Live and Die: Resource Security and the Biopolitics of Land Stockpiling in China

open access: yesAntipode, EarlyView.
Abstract Beginning in 2007, the Chinese state used liberalising policy and funding to encourage the expansion of large‐scale grain farming. Despite this support, many of the new farms have struggled financially and folded. Drawing on Foucauldian biopolitics and resource security literature, I argue that, with modernised agriculture, the state primarily
Ross Doll
wiley   +1 more source

Image analysis for velocity profile estimation in A-SOFT hybrid rocket combustor

open access: yesJournal of Fluid Science and Technology, 2018
Altering-intensity Swirling-Oxidizer-Flow-Type (A-SOFT) hybrid rocket engine (HRE) was proposed as a technique to solve problems of current hybrid rockets.
Nobuhiro KIMURA   +3 more
doaj   +1 more source

Hybrid Propulsion Technology Program, phase 1. Volume 1: Executive summary [PDF]

open access: yes
The study program was contracted to evaluate concepts of hybrid propulsion, select the most optimum, and prepare a conceptual design package. Further, this study required preparation of a technology definition package to identify hybrid propulsion ...

core   +1 more source

What can lithics tell us about food production during the transition to farming? Exploring harvesting practices and cultural changes during the neolithic in Southwest Asia: a view from Qminas (north‐western Syria)

open access: yesArchaeometry, EarlyView.
Abstract This study examines the continuity and change in harvesting practices between the Late Pre‐Pottery Neolithic B (LPPNB) and the Early Pottery Neolithic at Qminas, north‐western Levant, through a traceological analysis of flint sickles. By combining qualitative traceological analysis with quantitative functional approaches, we demonstrate that ...
Fiona Pichon   +3 more
wiley   +1 more source

Polymer degradation rate control of hybrid rocket combustion [PDF]

open access: yes
Polymer degradation to small fragments is treated as a rate controlling step in hybrid rocket combustion. Both numerical and approximate analytical solutions of the complete energy and polymer chain bond conservation equations for the condensed phase are
Ramohalli, K. N. R., Stickler, D. B.
core   +1 more source

Prediction of the aerodynamic performance of re-usable single stage to orbit vehicles [PDF]

open access: yes, 2011
Re-usable single stage to orbit launch vehicles promise to reduce the cost of access to space, but their success will be particularly reliant on accurate modelling of their aero-thermodynamic characteristics.
Ahmad, Abdul Ossman   +3 more
core  

Simulations of secondary Farley-Buneman instability driven by a kilometer-scale primary wave: anomalous transport and formation of flat-topped electric fields [PDF]

open access: yes, 2019
Since the 1950s, high frequency and very high frequency radars near the magnetic equator have frequently detected strong echoes caused ultimately by the Farley‐Buneman instability (FBI) and the gradient drift instability (GDI).
Dimant Y. S.   +4 more
core   +1 more source

Anticipating Knowledge Applicability in Open Science Through Recycling, Mimicking, and Shortcutting

open access: yesR&D Management, EarlyView.
ABSTRACT Open science literature scrutinizes how organizations provide access to knowledge. Yet, much less is known about how organizations pursuing open science for societal impact anticipate knowledge applicability—that shared knowledge is reusable for other organizations and individuals, and enables open social innovation.
Konstantin Hondros   +3 more
wiley   +1 more source

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