• Refine Query
  • Source
  • Publication year
  • to
  • Language
  • 5430
  • 3280
  • 979
  • 714
  • 650
  • 448
  • 196
  • 196
  • 196
  • 196
  • 196
  • 184
  • 172
  • 140
  • 118
  • Tagged with
  • 14547
  • 2252
  • 1644
  • 1491
  • 1420
  • 1363
  • 1235
  • 942
  • 859
  • 789
  • 634
  • 622
  • 620
  • 609
  • 597
  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
11

Development of an analytical guidance algorithm for lunar descent

Chomel, Christina Tvrdik, January 1900 (has links)
Thesis (Ph. D.)--University of Texas at Austin, 2007. / Vita. Includes bibliographical references.
12

Design of a battery charger for the NASA EOS space platform /

Sizemore, Tom, January 1991 (has links)
Thesis (M.S.)--Virginia Polytechnic Institute and State University, 1991. / Vita. Abstract. Bibliography: leaves 124-125. Also available via the Internet.
13

Effect of thermal protection system on vibration of aerospace structural panels /

Derar, Hind D. January 2008 (has links)
Thesis (M.S.) in Mechanical Engineering--University of Maine, 2008. / Includes vita. Includes bibliographical references (leaves 111-113).
14

Hypervelocity impact analysis of International Space Station Whipple and Enhanced Stuffed Whipple Shields /

Kalinski, Michael E. January 2004 (has links) (PDF)
Thesis (M.S. in Astronautical Engineering)--Naval Postgraduate School, Dec. 2004. / Thesis Advisor(s): Eric Christiansen, Terry R. McNelley. Includes bibliographical references (p. 275-276) Also available online.
15

Hybrid particle-finite element simulation of large deformation dynamics in composite materials

Park, Young-keun, Fahrenthold, Eric P., January 2004 (has links) (PDF)
Thesis (Ph. D.)--University of Texas at Austin, 2004. / Supervisor: Eric P. Fahrenthold. Vita. Includes bibliographical references.
16

Über unsere Orientierung im Raume bei Ausschluss der Augen Inaugural-Dissertation /

Liebig, Fritz-Gustav, January 1933 (has links)
Thesis (doctoral)--Thuringisches Landesuniversität, 1933. / "Sonderdruck aus "Zeitschrift für Sinnesphysiologie" Bd. 64 (1933)."
17

Spacecraft guidance strategies for proximity maneurvering and close approach with a tumbling object

Boyarko, George A. January 2010 (has links) (PDF)
Dissertation (Ph.D. in Astronautical Engineering)--Naval Postgraduate School, March 2010. / Dissertation supervisor: Romano, Marcello. "March 2010." Description based on title screen as viewed on April 30, 2010. Author(s) subject terms: spacecraft proximity operations, Inverse Dynamics in the Virtual Domain, rapid-trajectory generation, spacecraft rendezvous, spacecraft docking, autonomous assembly, Pontryagin, Minimum Principle, GPOPS, optimal reorientation, optimal rendezvous, quaternion, polynomial. Includes bibliographical references (p. 193-197). Also available in print.
18

Über unsere Orientierung im Raume bei Ausschluss der Augen Inaugural-Dissertation /

Liebig, Fritz-Gustav, January 1933 (has links)
Thesis (doctoral)--Thuringisches Landesuniversität, 1933. / "Sonderdruck aus "Zeitschrift für Sinnesphysiologie" Bd. 64 (1933)."
19

Accumulation model processes of human suborbital space transportation industry emergence

Davidian, Kenneth John 16 August 2018 (has links)
To respond to the research question, “by what processes do new industries emerge?”, the author identified different models of innovation development and industry emergence. Relevant streams of literature included economics, innovation, sociology, economic sociology, and institution theory. A functional goal innovation development theory, referred to as the accumulation model, states that many organizations, from both the public- and private-sectors, collect and accumulate resources in three major social functions. Previous research defined the model state-of-the-art at a high level of abstraction, identifying the three main components (industry infrastructure elements), depicted as separate boxes with arrows between them. This research uses grounded theory extension to identify microscopic processes, delving within and between the three macroscopic infrastructure elements. The industry context of this research was the emerging human suborbital space transportation (“space tourism”) industry. Data came from secondary sources, archival data, and primary sources. This research collected more than 8,400 pieces of secondary and archival data from news aggregator web sites, distilled them into approximately 600 significant events, and categorized them within the accumulation model framework’s three main components: Institutional Arrangements, Resource Endowments, and Proprietary Functions. Industry structure and disruptive innovation studies provided additional analytical perspectives. Primary data, collected via 40 interviews of industry members, filled in and validated data gaps. The combined analyses resulted in a deeper understanding of the industry emergence process. Observations of the sequence of events, and of linkages between events and actors, allowed the author to propose a set of processes, describing how the accumulated industry resources resulted in industry emergence. Description of these processes required modifications to the original framework. Furthermore, this research analyzed a high-profile prize event that initiated the industry emergence, to propose a supplemental set of processes, describing how prizes influence industry emergence. The current research proposes that institutional activities contribute primarily to the accumulation of sociopolitical legitimacy, and resource endowment activities contribute primarily to cognitive legitimacy. Both forms of legitimacy are a significant moderator of interactions between the three infrastructure elements. Furthermore, prizes positively contribute to sociopolitical legitimacy, positively moderate the creation of cognitive legitimacy, and positively moderate many steps in the business development cycle. The proposed processes identify the steps of legitimacy creation and industry emergence. This research provides new insights into the industry emergence and evolution processes, for entrepreneurs, managers, policy-makers, and for developing countries on the African continent.
20

Legal aspects of the use of force in space

Gleeson, Patrick K. January 2005 (has links)
No description available.

Page generated in 0.0571 seconds