Essays about: "space science introduction"

Showing result 6 - 10 of 11 essays containing the words space science introduction.

  1. 6. Low–voltage External Discharge Plasma Thruster and Hollow Cathodes Plasma Plume Diagnostics Utilising Electrostatic Probes and Retarding Potential Analyser

    University essay from Luleå tekniska universitet/Rymdteknik

    Author : George-Cristian Potrivitu; [2016]
    Keywords : space electric propulsion; in-space advanced propulsion technology; Hall effect thruster; hollow cathode; wall-less Hall thruster; external discharge plasma thruster; single Langmuir probe; double Langmuir probe; emissive probe; retarding potential analyzer; plume plasma diagnostics; low-voltage Hall thruster; high-current hollow cathode; plasma parameters; propulsion electrique pour l espace; cathode creuse à fort courant; propulseur à décharge externe de plasma; propulseur à effet Hall à basse tension; techniques de diagnostic du plasma; sonde de Langmuir simple; sonde de Langmuir double; sonde émissive; analyseur à potentiel retardé;

    Abstract : The present thesis is the result of a research period at the Institute of Space and Astronautical Science of the Japanese Aerospace Exploration Agency, ISAS/JAXA within Funaki Laboratory of the Department of Space Flight Systems that followed the path of plume plasma diagnostics for space electric propulsion drives. During the experimental studies two high-current hollow cathodes and an innovative prototype of a low-voltage fully external discharge plasma thruster (XPT) had their plasma plumes diagnosed using electrostatic probes and retarding potential analyser (RPA). READ MORE

  3. 7. Interactive visualization of space weather data

    University essay from Medie- och Informationsteknik; Tekniska högskolan

    Author : Martin Törnros; [2013]
    Keywords : scientific visualization; volumetric rendering; ray casting in spherical coordinates; space weather; sun; coronal mass ejection; cme; NASA; Datateknik; Datateknik;

    Abstract : This work serves to present the background, approach, and selected results for the initial master thesis and prototyping phase of Open Space, a joint visualization software development project by National Aeronautics and Space Administration (NASA), Linköping University (LiU) and the American Museum of Natural History (AMNH). The thesis report provides a theoretical introduction to heliophysics, modeling of space weather events, volumetric rendering, and an understanding of how these relate in the bigger scope of Open Space. READ MORE

  4. 8. 20 years of steering the European Citizenship – How to Get Europeans on Board?

    University essay from Lunds universitet/Statsvetenskapliga institutionen

    Author : Freja Hagsund; [2013]
    Keywords : European citizenship; citizen obligations; European Commission; constructive analysis; citizenship theory; Law and Political Science;

    Abstract : This thesis has the constructive aim of analyzing the European Commission's normative expectations on European citizens and exploring the prerequisites for their realization. To this purpose, three main perspectives in citizenship theory, liberalism, republicanism and communitarianism are used in the analysis of official Commission documents. READ MORE

  5. 9. Improving peri-urban home gardens in Hyderabad, India

    University essay from SLU/Dept. of Food Science

    Author : Karolin Andersson; Katarina Henriksson; [2012]
    Keywords : peri-urban; home garden; agriculture; food security; Hyderabad; India; Jharkhand;

    Abstract : Insufficient intake of vegetables is a reason for micronutrient deficiencies and malnutrition in developing countries. With urbanization, globalization and a growing world population it is of major importance to secure sufficient food supply for the world’s population. READ MORE

  6. 10. International Legal Aspects of Punitive House Demolitions in the Occupied Palestinian Territories

    University essay from Lunds universitet/Juridiska institutionen

    Author : Jelena Madzarevic; [2005]
    Keywords : International Human Rights Law; Law and Political Science;

    Abstract : Throughout five chapters, the thesis deals with the issues of international humanitarian and human rights law arising out of the practice of punitive house demolition, that is repetitively utilized in the Occupied Palestinian Territories by the Israeli authorities, in response to the acts of insurgency/terrorism. The first chapter (Introduction) enables the reader to get a glimpse of the precise objective(s) of the thesis, coupled with the reservations regarding the scope of the study, due to the practical necessities of the available space and time. READ MORE