Results 51 to 60 of about 61,445 (265)

Collaborating in future states—Contextual instability, paradigmatic remaking, and public policy

Australian Journal of Public Administration, EarlyView.
Abstract Collaboration is ubiquitous in public policy life, with its presence and profile determined by prevailing governance conditions. Commitments to globalisation and marketisation in the latter part of the 20th century marked the onset of an era defined by collaboration, between and across tiers and spheres of government, with non‐state actors ...
Helen Sullivan
wiley   +1 more source

Model Predictive Based Unscented Kalman Filter for Hypersonic Vehicle Navigation With INS/GNSS Integration

IEEE Access, 2020
The INS/GNSS integration is the commonly used technique for hypersonic vehicle navigation. However, owing to the complicated flight dynamics with high maneuverability and large flight envelope, the dynamic model of INS/GNSS integration inevitably exists ...
Gaoge Hu, Longqiang Ni, Bingbing Gao, Xinhe Zhu, Wei Wang, Y. Zhong   +5 more
semanticscholar   +1 more source

A “Tech First” Approach to Foreign Policy? The Three Meanings of Tech Diplomacy

Global Policy, EarlyView.
ABSTRACT Scholars have recently argued that international politics is plagued by instability as the world rapidly transitions from one crisis to another. This state of “Permacrisis,” or permanent crises between states, is driven by technological innovations which create new kinds of crises and drive competitions between adversarial states.
Ilan Manor
wiley   +1 more source

Propagation of Elastic Waves in a One-Dimensional High Aspect Ratio Nanoridge Phononic Crystal

Applied Sciences, 2018
We investigate the propagation of elastic waves in a one-dimensional (1D) phononic crystal constituted by high aspect ratio epoxy nanoridges that have been deposited at the surface of a glass substrate.
Abdellatif Gueddida, Yan Pennec, El Houssaine El Boudouti, George Fytas, Bahram Djafari Rouhani   +4 more
doaj   +1 more source

Evolving Geopolitics and Japan's Economic Security–Trade Nexus: ‘New Capitalism’ as a Balancing Act?

Global Policy, EarlyView.
ABSTRACT Amid intensifying geopolitical tensions, governments increasingly perceive economic interdependence as a strategic vulnerability. Japan, situated geopolitically between two great powers—the United States and China—attempts to navigate geopolitics by prioritising economic security.
Minako Morita‐Jaeger
wiley   +1 more source

Study of an adaptive bump control mechanism for shock wave/boundary layer interactions in supersonic flows

Theoretical and Applied Mechanics Letters
The stability of supersonic inlets faces challenges due to various changes in flight conditions, and flow control methods that address shock wave/boundary layer interactions under only one set of conditions cannot meet developmental requirements.
Shan-Shan Tian, Liang Jin, Wei Huang, Yang Shen, Kai An   +4 more
doaj   +1 more source

A Proposal for Long-Term Missions of Small Lunar Rovers Using an MLI Curtain System

International Journal of Aerospace Engineering, 2019
This paper proposes a lunar night survival method for small rovers using an MLI (Multilayer Insulation) curtain system for long-term missions. Until recently, it was difficult to install RHU (Radioisotope Heating Units) or other temperature maintenance ...
Jang-Joon Lee, Kyu-Hong Kim
doaj   +1 more source

War as a Phenomenon of Inquiry in Management Studies

Journal of Management Studies, EarlyView.
Abstract We argue that war as a phenomenon deserves more focused attention in management. First, we highlight why war is an important and relevant area of inquiry for management scholars. We then integrate scattered conversations on war in management studies into a framework structured around three building blocks – (a) the nature of war from an ...
Fabrice Lumineau, Arne Keller
wiley   +1 more source

Modeling and Performance Analysis of Solid Oxide Fuel Cell Power Generation System for Hypersonic Vehicles

Aerospace
Advanced airborne power generation technology represents one of the most effective solutions for meeting the electricity requirements of hypersonic vehicles during long-endurance flights.
Yiming Liu, Jianguo Tan, Dongdong Zhang, Zihan Kuai   +3 more
doaj   +1 more source

Control Effectiveness of Vortex Generators in High‐Speed Flows in Off‐Design Conditions

PAMM, Volume 26, Issue 1, March 2026.
ABSTRACT In aerospace transportation and propulsion systems, shock‐induced flow separation has strong detrimental effects on the aerodynamic behavior and performance. To alleviate these effects, separation control is necessary. A commonly pursued approach uses vortex generators (VG) of different design to increase the momentum transfer within the ...
Anne‐Marie Schreyer
wiley   +1 more source