Now showing items 2304-2323 of 2697

    • Single Waypoint ZEM/ZEV Based Closed-Loop Controller Design for Rendezvous with a Rotating Target 

      Alvarez Rolins, Armando (2017-05)
      The research presented in this thesis addresses a very specific kind of autonomous rendezvous procedure between two spacecraft in close proximity, namely that in which the chaser object is attempting to dock at a location ...
    • A single-server queue with random accumulation level 

      Dshalalow, Jewgeni H. (1991)
      The author studies the queueing process in a single-server bulk queueing system. Upon completion of a previous service, the server can take a group of random size from customers that are available. Or, the server can wait ...
    • Singular behavior of the Debye-Waller factor of graphene 

      Tewary, Vinod K.; Yang, Bo (2009-03-16)
      It is shown that the mean-square displacement or the exponent of the Debye-Waller factor of graphene has a singularity except at zero temperature. The zero-temperature values of the mean-square displacement are calculated ...
    • Singular positone and semipositone boundary value problems of second order delay differential equations 

      Jiang, Daqing; Xu, Xiaojie; O'Regan, Donal; Agarwal, Ravi P. (2005-06)
      In this paper we present some new existence results for singular positone and semipositone boundary value problems of second order delay differential equations. Throughout our nonlinearity may be singular in its dependent ...
    • Sink or Swim: Maximizing the Impact of 360° Feedback in Leader Development 

      Ellison, Leah Joyce (2018-11)
      Leader development initiatives prescribed as isolated events often fall short of their intended outcomes (Avolio, Reichard, Hannah, Walumbwa, & Chan, 2009). Initiatives should instead be enacted as part of an ongoing ...
    • Sintered regolith: for Martian, Lunar, and Terrestrial construction 

      Aledresi, Amro; Dawson, Chris; Kempton, Joshua; Lopizzo, Edward; Sedor, Charles; Terry, Jason
      This project proposes laboratory flexural and compressive testing of sintered regolith samples to determine the material’s mechanical properties in support of the Surface Systems research at NASA and Florida Tech’s Buzz ...
    • Skin Deformation Feedback for Force Sensory Substitution in Teleoperation and Virtual Reality Training 

      Schorr, Samuel (2017-08-28)
      For this work, we developed a wearable skin deformation device that is worn on the tip of the finger. The devices have two separate components, the first of which is a finger grounding interface that straps to the medial ...
    • Small satellite launch capability of the Boeing Inertial Upper Stage 

      Platt, Donald W.; Antalek, Christopher; Bocchicchio, Jennifer D.; Katz, Dale; Keleshian, Greg; Martin, Paul (1997-09-19)
      We present a design for taking advantage of the Boeing inertial upper Stage (IUS) to provide a means of launching small satellites as passengers on a Titan IV-IUS launch of a 1775 kg communications satellite. An overview ...
    • Small-scale magnetic flux ropes in the solar wind 

      Moldwin, M. B.; Ford, S.; Lepping, Ronald P.; Slavin, James A.; Szabo, Adam (2000-01-01)
      Small-scale magnetic flux ropes have been discovered in the solar wind at 1 AU in observations from the IMP 8 and WIND spacecraft. These small magnetic structures (diameter of 270 R(E), on average) have some similar ...
    • Smart actuation of inlet guide vanes for small turbine engine 

      Rusovici, Razvan; Kwok-Choon, Stephen T.; Sepri, Paavo; Feys, Joshuo (2011-03-07)
      Unmanned Aerial Vehicles (UAVs) have gained popularity over the past few years to become an indispensable part of aerial missions that include reconnaissance, surveillance, and communication [1]. As a result, advancements ...
    • Software design based on operational modes 

      Jorgensen, Alan Albert (2002-07-23)
      The use of software is ubiquitous despite its reputation for low reliability. This dissertation experimentally verifies this reputation and then proposed changes to the development process to prevent certain classes of ...
    • Solar boat 

      Burghardt, Brandon; Le Merdy, Thibaud; Palaschak, Brett; Brusnigham, Riggs; Flondro, Ashley; Rabenold, Jon; Casiraghi, Gianmarco; Dube, Joshua; Alkhalaf, Majed
      The solar boat will be built to compete in a world cup race in Monaco.The boat serves to further the knowledge and awareness of solar powered technologies, innovations and sustainable alternative energies and keep our ocean ...
    • Solar Boat 

      Burghardt, Brandon; Le Merdy, Thibaud; Palaschak, Brett; Brusnigham, Riggs; Flondro, Ashley; Rabenold, Jon; Casiraghi, Gianmarco; Dube, Joshua; Alkhalaf, Majed
      The solar boat is designed and built to compete in a world cup race in Monaco. The boat serves to further the knowledge and awareness of solar powered technologies, innovations and sustainable alternative energies and keep ...
    • Solar cycle variations in the composition of the suprathermal heavy-ion population near 1 AU 

      Desai, Mihir I.; Mason, Glenn M.; Mazur, Joseph E.; Dwyer, Joseph R. (2006-07-01)
      We have measured the annual variation in the quiet-time composition of interplanetary suprathermal ions between 0.04 and 1 MeV nucleon-1 from 1994 November 20 through 2006 January 1. Our results show the following: (1) The ...
    • The Solar Energetic Particle Event of 2010 August 14: Connectivity with the Solar Source Inferred from Multiple Spacecraft Observations and Modeling 

      Lario, David; Kwon, Ryunyoung; Richardson, Ian G.; Raouafi, Nour Eddine; Thompson, B. J.; Rosenvinge, Tycho T Von; Mays, Mona Leila; Mäkelä, Pertti A.; Zhang, Ming; Zhao, Lulu (2017-03-23)
      We analyze one of the first solar energetic particle (SEP) events of solar cycle 24 observed at widely separated spacecraft in order to assess the reliability of models currently used to determine the connectivity between ...
    • The Solar Energetic Particle Event of 2010 August 14: Connectivity with the Solar Source Inferred from Multiple Spacecraft Observations and Modeling 

      Lario, David; Kwon, Ryun Young; Richardson, Ian G.; Raouafi, Nour Eddine; Thompson, Barbara J.; Rosenvinge, Tycho T Von; Mays, Mona Leila; Mäkelä, Pertti A.; Zhang, Ming; Zhao, Lulu (2017-03-20)
      We analyze one of the first solar energetic particle (SEP) events of solar cycle 24 observed at widely separated spacecraft in order to assess the reliability of models currently used to determine the connectivity between ...
    • Solar Energy Storage Using Earth-Abundant Materials 

      Roske, Christopher W. (2017)
      Among alternative energy technologies, solar is well suited to meet the grand energy challenge ahead if we can overcome the intermittent supply of sunlight.1,2 Storing solar energy in chemical bonds serves as an attractive ...
    • The solar flare of the 14th of July 2000 (L3+C detector results) 

      Achard, Pablo; Adriani, O.; Aguilar-Benítez, M.; Baksay, Gyöngyi; Baksay, László A.; Dehmelt, K.; Hohlmann, M.; Rembeczki, D.; Szillasi, Z.; Vodopianov, I. (2006-09)
      Aims.Several experiments have reported observations on possible correlations between the flux of high energy muons and intense solar flares. If confirmed, these observations would have significant implications for acceleration ...
    • Solar powered battery charger 

      Dudley, Jonathan; Krouth, Sheila; Loudon, Michael
      Solar arrays provide clean power, but the amount depends significantly on available sunlight. To achieve sufficient power, mechanical tracking or maximum power point tracking (MPPT) methods are implemented. While mechanical ...
    • Solarizer 

      Brandt, Michael; Green, Michael; Pearce, Shelby; Soileau, Liana
      In developing countries and following natural disasters, there is a need for a portable solar powered autoclave to properly sterilize surgical equipment because there is often no access to electricity or natural gas. Without ...