Results 141 to 150 of about 1,081 (308)
Environmental Policy and Governance, EarlyView.ABSTRACT Since the 1990s, environmental policy has shifted toward ecosystem protection and biodiversity conservation, a development often described as an ecological turn. This article argues that in practice this turn has taken the form of an ecological “U‐turn,” as environmental ambitions are subordinated to production‐oriented objectives.
Gisle Andersen +2 more
wiley +1 more source
The Combination of Two Concentric Discharge Channels into a Nested Hall-Effect Thruster. [PDF]
, 2013 Hall-effect thrusters continue to be one of the most efficient technologies for spacecraft maneuvering and stationkeeping. One of the ongoing efforts in the electric propulsion community is to scale Hall-effect thrusters to high powers (10 kW - 1 MW ...
Liang, Raymond
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PlasmaThe results from a wide-ranging parametric investigation into the behavior of the collisionless partially magnetized plasma discharge of three propellants—xenon, krypton, and argon—are reported in this two-part article.
Maryam Reza, Farbod Faraji, Aaron Knoll
doaj +1 more source
European Journal of Social Psychology, EarlyView.ABSTRACT Societal gender role norms play a crucial role in shaping men's and women's career aspirations. However, prior research documenting this key role of gendered norms has primarily focused on heterosexual women and men in the global North‐West. Previous studies documenting differences in career interests by sexual orientation suggest that gender ...
Katharina Block +136 more
wiley +1 more source
Mission to Psyche: Including Undergraduates and the Public on the Journey to a Metal World. [PDF]
Space Sci Rev, 2023 Bowman CDD +22 more
europepmc +1 more source
Simulation of a Hall Effect Thruster with Krypton Propellant [PDF]
53rd AIAA/SAE/ASEE Joint Propulsion Conference, 2017 Horatiu C. Dragnea +2 more
openaire +1 more source
A Time-resolved Investigation of the Hall Thruster Breathing Mode. [PDF]
, 2010 The existence of plasma oscillations in the near and far field discharge of a Hall effect thruster alters the conventionally held view of their operation as steady electrostatic propulsion devices.
Lobbia, Robert Bryant
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European Policy Analysis, EarlyView.ABSTRACT Policy process research has excelled in explaining structural policy change within national settings, but extensions and applications to the EU level have long proven challenging for scholars. Given that the EU is currently experiencing its longest period of Treaty stability since the 1980s—having evolved into a sui generis political system ...
Vassilis Karokis‐Mavrikos
wiley +1 more source
Research and Experiment on a Bionic Fish Based on High-Frequency Vibration Characteristics. [PDF]
Biomimetics (Basel), 2023 Zhang B, Chen Y, Wang Z, Ma H.
europepmc +1 more source
Performance of a Cylindrical Hall-Effect Thruster Using Permanent Magnets
, 2009 While annular Hall thrusters can operate at high efficiency at kW power levels, it is difficult to construct one that operates over a broad envelope from 1 kW down to 100 W while maintaining an efficiency of 45-55%. Scaling to low power while holding the
Fisch, N. J. +3 more
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