Now showing items 555-574 of 588

    • Ultra-high frequency photoconductivity decay in GaAs/Ge/GaAs double heterostructure grown by molecular beam epitaxy 

      Hudait, Mantu K.; Zhu, Y.; Johnston, S. W.; Maurya, Deepam; Priya, Shashank; Umbel, R. (AIP Publishing, 2013-03-01)
      GaAs/Ge/GaAs double heterostructures (DHs) were grown in-situ using two separate molecular beam epitaxy chambers. High-resolution x-ray rocking curve demonstrates a high-quality GaAs/Ge/GaAs heterostructure by observing ...
    • Ultra-high performance wearable thermoelectric coolers with less materials 

      Kishore, Ravi Anant; Nozariasbmarz, Amin; Poudel, Bed; Sanghadasa, Mohan; Priya, Shashank (Springer Nature, 2019-04-16)
      Thermoelectric coolers are attracting significant attention for replacing age-old cooling and refrigeration devices. Localized cooling by wearable thermoelectric coolers will decrease the usage of traditional systems, ...
    • Understanding Adult Foster Care State by State: Provider Experience in North Carolina 

      Munly, Kelly (Virginia Tech, 2013-04)
      This presentation provides an overview of adult long-term care needs and a range of long-term care options.
    • Understanding Falls in Late Life: A Review of the Empirical Literature 

      Weaver, Raven H.; Roberto, Karen A.; Brossoie, Nancy (Virginia Tech, 2013-04)
      One in three Americans aged 65+ experience unanticipated falls requiring medical care annually. Falls are associated with physical and psychological morbidities, decreased quality of life, and high health care costs. From ...
    • Universal system structure for low power adapters 

      Virginia Tech Intellectual Properties, Inc.; Li, Qiang; Lee, Fred C.; Huang, Xiucheng (United States Patent and Trademark Office, 2017-12-19)
      A two-stage power converter architecture including an isolation transformer and rectification of the isolation transformer output by an LLC resonant circuit and methodology for operating the same feeds an output voltage ...
    • V^2 power converter control with capacitor current ramp compensation 

      Virginia Tech Intellectual Properties, Inc.; Liu, Pei-Hsin; Lee, Fred C.; Yan, Yingyi (United States Patent and Trademark Office, 2017-03-21)
      Operation of a switching power converter having an output capacitor having a small equivalent series resistance (ESR) is stabilized and jitter reduced by sensing capacitor current with gain and combining the resulting ...
    • VA Tech services for students with disabilities and research collaboration 

      Hudson, Robyn (2012-10-12)
      Robyn Hudson, Assistant Director at the Virginia Tech office of Services for Students with Disabilities (SSD) describes issues for Virginia Tech students with autism spectrum disorders, and available services for those ...
    • A Validation of the Life Satisfaction Scale in a Population of ADS Participants 

      Ogletree, Aaron M.; Jarrott, Shannon E. (Virginia Tech, 2014-11-06)
      The objective of this research is to establish psychometric indicators for the LSS in a population of frail ADS participants.
    • Virginia Coal, 1991 

      Randolph, John; Jones, Johanna R.; Prelaz, L. J.; Zipper, Carl E. (Virginia Tech, 1991-07)
      A complete annual directory and data reference source for all mines licensed in the Commonwealth. Mine listings for each operation include company and mine name, location and contact person, coal owner, seam worked, ...
    • Virginia Coal, 1992 

      Randolph, John; Jones, Johanna R.; Prelaz, L. J.; Zipper, Carl E. (Virginia Tech, 1992-07)
      A complete annual directory and data reference source for all mines licensed in the Commonwealth. Mine listings for each operation include company and mine name, location and contact person, coal owner, seam worked, ...
    • Virginia Coal, 1993 

      Randolph, John; Jones, Johanna R.; Prelaz, L. J.; Zipper, Carl E. (Virginia Tech, 1993-07)
      A complete annual directory and data reference source for all mines licensed in the Commonwealth. Mine listings for each operation include company and mine name, location and contact person, coal owner, seam worked, ...
    • Virginia Coal, 1994 

      Randolph, John; Jones, Johanna R.; Prelaz, L. J.; Zipper, Carl E. (Virginia Tech, 1994-07)
      A complete annual directory and data reference source for all mines licensed in the Commonwealth. Mine listings for each operation include company and mine name, location and contact person, coal owner, seam worked, ...
    • Virginia Coal, 1995 

      Randolph, John; Jones, Johanna R.; Prelaz, L. J.; Zipper, Carl E. (Virginia Tech, 1995-07)
      A complete annual directory and data reference source for all mines licensed in the Commonwealth. Mine listings for each operation include company and mine name, location and contact person, coal owner, seam worked, ...
    • Virginia Coal, 1996 

      Karmis, Michael; Jones, Johanna R.; Prelaz, L. J.; Zipper, Carl E. (Virginia Tech, 1996-07)
      A complete annual directory and data reference source for all mines licensed in the Commonwealth. Mine listings for each operation include company and mine name, location and contact person, coal owner, seam worked, ...
    • Virginia Coal, 1997 

      McPherson, Malcolm; Loomis, Ian; Prelaz, L. J.; Radcliffe, Margaret; Zipper, Carl E.; Holman, Darren (Virginia Tech, 1997-07)
      A complete annual directory and data reference source for all mines licensed in the Commonwealth. Mine listings for each operation include company and mine name, location and contact person, coal owner, seam worked, ...
    • Virginia Coal, 1998 

      McPherson, Malcolm; Loomis, Ian; Prelaz, L. J.; Radcliffe, Margaret; Zipper, Carl E. (Virginia Tech, 1998-07)
      The Virginia Center for Coal and Energy Research is pleased to produce the 1998 edition of its annual Directory, Virginia Coal. This is one of the prime sources of statistics on Virginia coal production, mining methods and ...
    • Virginia Coal: An Abridged History 

      Hibbard, Walter R., Jr. (Virginia Tech. Virginia Center for Coal and Energy Research., 1990-04)
      An abridged history of coal production in Virginia, including data about Virginia coal production and consumption from 1748-1988.
    • Virginia Public Guardian and Conservator Programs: Evaulation of Program Status and Outcomes, Executive Summary 

      Teaster, Pamela B. (Pamela Booth); Roberto, Karen A. (Virginia Department for the Aging, 2003)
      The Virginia Public Guardian and Conservator Programs were established by law in 1997 in § 2.1-373.10 - § 2.1-373.14 of the Virginia Code. The 10 local programs, chosen through a request for proposal (RFP) process, are ...
    • Virginia Tech Center for Autism Research 

      Virginia Tech Center for Autism Research (2012-10-12)
      These slides serve as a welcome for the Autism Research Conference held at Virginia Tech on August 15 2012. The slides describe symptoms and prevalence of autism spectrum disorders, list goals for the proposed Center for ...
    • Virginia Tech Center for Autism Research - Susan White perspective 

      White, Susan (2012-10-12)
      Highlights of the autism research of Susan White, Psychology professor and the co-director of the VT Autism clinic, are explained. Topics include anxiety, treatment development, ASD in adults, and biomarker pursuit. Fit ...