Results 81 to 90 of about 1,081 (308)

A flexible magnetic circuit dedicated to Hall effect Thruster experiment

, 2012
International audienceThis paper deals with a magnetic circuit dedicated to Hall effect Thruster experiment. Compared with conventional magnetic circuit used in Hall Effect Thruster, the aim of this new magnetic circuit is to control many characteristics
Hénaux, Carole, Garrigues, Laurent, R. Vilamot, L. Garrigues, D. Harribey, C. Henaux, Vilamot, Raphaël, Harribey, Dominique   +7 more
core   +1 more source

Power Processing Unit Activities in Airbus DS Space Equipments

E3S Web of Conferences, 2017
This paper presents the Power Processing Units in Airbus DS Space Equipment. Electric propulsion has (EP) become a reality in the commercial market, and therefore is not anymore a niche market for earth observation and/or deep space missions.
Pintó Fernando, Palencia Javier, Wagner Nicoletta, Glorieux Guillaume   +3 more
doaj   +1 more source

Challenges and Opportunities in Multi‐Method Integrated Geophysical Prospection of Buried Building Remains at the Sanctuary of Olympia

Archaeological Prospection, EarlyView.
ABSTRACT Ancient Olympia was one of the most important sanctuaries and the venue for the Olympic Games in Greek and Roman times. Its remains are located in the Olympia Terrace (Peloponnese, Greece) at the present‐day confluence of the rivers Alpheios and Kladeos at the base of Mount Kronos.
Sarah Bäumler, Dennis Wilken, Peter Fischer, Lena Slabon, Timo Willershäuser, Birgitta Eder, Hans‐Joachim Gehrke, Erofili‐Iris Kolia, Franziska Lang, Oliver Pilz, Andreas Vött   +10 more
wiley   +1 more source

Hall-Effect Thruster--Cathode Coupling, Part I: Efficiency Improvements from an Extended Outer Pole

, 2011
This is the first part of a two-part paper in which the effect of cathode position and magnetic field configuration on Hall-effect thruster performance is explored.
Jason D. Sommerville, King, Lyon B., Lyon B. King, Sommerville, Jason D.   +3 more
core   +1 more source

Learning to ‘be’ an activist: Exploring the relationship between activism and informal education in a youth activism group case study

British Educational Research Journal, EarlyView.
Abstract Young people in the United States (and beyond) access spaces for activism in varied ways, including the out‐of‐school time sector, where youth activism (YA) groups draw on informal learning pedagogies to engage young people in collective action.
Laura Weiner
wiley   +1 more source

‘It's all very well having a diverse curriculum, but if there is no curriculum, it can be as diverse as you like’: Precarity and decolonising in the neoliberal UK higher education system

British Educational Research Journal, EarlyView.
Abstract Drawing upon interview research across two academic departments as part of the early stages of a ‘decolonise the curriculum’ initiative at a Southern UK university, this study highlights a growing gulf between policy and practice in efforts to address systemic racial inequalities in UK universities. A reliance upon precarious labour, a culture
Triona Fitton, Barbara Adewumi, Laura R. Bailey, Jacob W. Moore, Lauren‐Marie Aba Amoah   +4 more
wiley   +1 more source

Magnesium Hall Thruster

, 2015
This Phase II project is developing a magnesium (Mg) Hall effect thruster system that would open the door for in situ resource utilization (ISRU)-based solar system exploration. Magnesium is light and easy to ionize.
Szabo, James J.
core  

Compromise kinetic-fluid model of electrons dynamics in electric propulsion devices with closed electrons drift as an alternative to the hybrid PIC-Fluid method

Авіаційно-космічна техніка та технологія
Electric propulsion devices with closed electron drift include Hall effect thrusters, plasma-ion thrusters with a radial magnetic field, and helicon thrusters, which are sources of plasma, ions, and electrons. Within the framework of the hybrid PIC-Fluid
Serhii Nesterenko, Huang Zhihao, Shahram Roshanpour   +2 more
doaj   +1 more source

The impact of the current student loans regime on Muslim student engagement and retention in English higher education

British Educational Research Journal, EarlyView.
Abstract There is much interest in the potential for an alternative funding system for higher education students in England to support the spiritual and worldly needs of British Muslim students. At the heart of this issue lies a tension over whether the student financing system in English HE is haram, or forbidden under Islamic (Shari'ah) law, because ...
Richard Hall, Yusraa Maryam, Sumeya Loonat   +2 more
wiley   +1 more source

Lessons from primary school students' perceptions of the factors that influence school connectedness

British Educational Research Journal, EarlyView.
Abstract School connectedness is critical to improving students' health, development and wellbeing. Research into primary school students' perceptions of the factors that influence their sense of connectedness is essential for identifying practices that promote success.
Jordana F. Hoenig, Therese M. Cumming
wiley   +1 more source