Now showing items 1-20 of 80

    • A Framework for Occupancy Tracking in a Building via Structural Dynamics Sensing of Footstep Vibrations 

      Poston, Jeffrey D.; Buehrer, R. Michael; Tarazaga, Pablo A. (Frontiers, 2017-11-06)
      Counting the number of occupants in building areas over time—occupancy tracking— provides valuable information for responding to emergencies, optimizing thermal conditions or managing personnel. This capability is distinct ...
    • Adoption of High-Performance Housing Technologies Among U.S. Homebuilding Firms, 2000 Through 2010 

      McCoy, Andrew P.; Koebel, C. Theodore; Sanderford, Andrew R.; Franck, Christopher T.; Keefe, Matthew J. (HUD, 2015)
      This article describes foundational processes of a larger project examining U.S. home builders’ choices to adopt innovative housing technologies that improve the environmental performance of new single-family homes. Home ...
    • AERIS : Eco-Vehicle Speed Control at Signalized Intersections Using I2V Communication 

      Rakha, Hesham A.; Kamalanathsharma, Raj K.; Ahn, Kyoungho (United States. Joint Program Office for Intelligent Transportation Systems, 2012-06)
      This report concentrates on a velocity advisory tool, or decision support system, for vehicles approaching an intersection using communication capabilities between the infrastructure and vehicles. The system uses available ...
    • Agent-Based Game Theory Modeling for Driverless Vehicles at Intersections 

      Rakha, Hesham A.; Zohdy, Ismail; Kamalanathsharma, Raj K. (United States. Department of Transportation, 2013-02-19)
      This report presents three research efforts that were published in various journals. The first research effort presents a reactive-driving agent based algorithm for modeling driver left turn gap acceptance behavior at ...
    • An Empirical Study on the Energy Consumption in Residential Buildings after Adopting Green Building Standards 

      Zhao, Dong; McCoy, Andrew; Du, Jing (Elsevier, 2016)
      In the past decades, a tremendous effort has been put into research and development of improved building systems and technologies to reduce the building energy consumption and advance energy efficiency. However, there is ...
    • Applications of Connected Vehicle Infrastructure Technologies to Enhance Transit Service Efficiency and Safety, Part 1 

      Hancock, Kathleen (Connected Vehicle/Infrastructure University Transportation Center (CVI-UTC), 2016-09-30)
      Implementing Connected Vehicle Infrastructure (CVI) applications for handheld devices into public transportation transit systems would provide transit agencies and their users with two-directional information flow from ...
    • Applications of Connected Vehicle Infrastructure Technologies to Enhance Transit Service Efficiency and Safety, Part 2 

      Lee, Young-Jae; Thomas, Clayton; Dadvar, Seyedehsan (Connected Vehicle/Infrastructure University Transportation Center (CVI-UTC), 2016-09-30)
      Many transit agencies provide real-time operational information and trip-planning tools through phone, Web, and smartphone applications. These services utilize a one-way information flow from transit agencies to transit ...
    • Assessment of a Drowsy Driver Warning System for Heavy Vehicle Drivers: Final Report 

      Olson, Rebecca L. (Rebecca Lynn); Morgan, Justin F.; Hanowski, Richard J.; Daily, B.; Zimmermann, R. P.; Blanco, Myra; Bocanegra, Joseph L.; Fitch, Gregory M.; Flintsch, Alejandra M. (United States. National Highway Traffic Safety Administration, 2008)
      Drowsiness has a globally negative impact on performance, slowing reaction time, decreasing situational awareness, and impairing judgment. A field operational test of an early prototype Drowsy Driver Warning System was ...
    • An Assessment of Quiet Vehicles and Pedestrian and Bicyclist Safety 

      Alden, Andrew S. (2014-07-28)
      The primary intent of this report is to provide a comprehensive and concise overview of the apparent safety issues presented to pedestrians and pedalcyclists by the operation of quiet vehicles on roadways. The report ...
    • Automated Vehicle Crash Rate Comparison Using Naturalistic Data 

      Blanco, Myra; Atwood, Jon; Russell, Sheldon; Trimble, Tammy; McClafferty, Julie; Perez, Miguel (Virginia Tech Transportation Institute, 2016-01-08)
      This study assessed driving risk for the United States nationally and for the Google Self-Driving Car project. Driving safety on public roads was examined in three ways. The total crash rates for the Self-Driving Car and ...
    • Bioinspired Tracking Control of High Speed Nonholonomic Ground Vehicles 

      Shoemaker, Adam; Leonessa, Alexander (Hindawi, 2015-10-04)
      The behavior of nature’s predators is considered for designing a high speed tracking controller for nonholonomic vehicles, whose dynamicsare represented using a unicycle model. To ensure that the vehicle behaves intuitively ...
    • A collaboration workflow from sound-based composition to performance of electroacoustic music using «Pure Data» as a framework. 

      Tsoukalas, Kyriakos (Bauhaus Universitat Weimer, 2011-08)
      This paper describes a workflow for composers, engineers and performers to collaborate, using Pure Data (PD) as a framework, towards the design of electroacoustic musical instruments intended for live performances of ...
    • Connected Motorcycle Crash Warning Interfaces 

      Song, Miao; McLaughlin, Shane; Doerzaph, Zachary (Connected Vehicle/Infrastructure University Transportation Center (CVI-UTC), 2016-01-15)
      Crash warning systems have been deployed in the high-end vehicle market segment for some time and are trickling down to additional motor vehicle industry segments each year. The motorcycle segment, however, has no deployed ...
    • Connected Motorcycle System Performance 

      Viray, Reginald; Noble, Alexandria M.; Doerzaph, Zachary; McLaughlin, Shane (Connected Vehicle/Infrastructure University Transportation Center (CVI-UTC), 2016-01-15)
      This project characterized the performance of Connected Vehicle Systems (CVS) on motorcycles based on two key components: global positioning and wireless communication systems. Considering that Global Positioning System ...
    • Connected Vehicle Applications for Adaptive Overhead Lighting (On-demand Lighting) 

      Gibbons, Ronald B.; Palmer, Matthew; Jahangiri, Arash (Connected Vehicle/Infrastructure University Transportation Center (CVI-UTC), 2016-07-01)
      The Virginia Tech Transportation Institute (VTTI) has developed an on-demand roadway lighting system and has tested the system’s effect on driver visual performance. On-demand roadway lighting can dramatically reduce energy ...
    • Connected Vehicle Enabled Freeway Merge Management – Field Test 

      Smith, Brian L.; Park, Hyungjun; Hayat, Md Tanveer (Connected Vehicle/Infrastructure University Transportation Center (CVI-UTC), 2016-01-01)
      Freeway congestion is a major problem of the transportation system, resulting in major economic loss in terms of traffic delays and fuel costs. With connected vehicle (CV) technologies, more proactive traffic management ...
    • Connected Vehicle Freeway Speed Harmonization Systems 

      Rakha, Hesham; Yang, Hao (Connected Vehicle/Infrastructure University Transportation Center (CVI-UTC), 2016-03-15)
      The capacity drop phenomenon, which reduces the maximum bottleneck discharge rate following the onset of congestion, is a critical restriction in transportation networks that causes additional traffic congestion. Consequently, ...
    • A Connected Vehicle–Enabled Virtual Dynamic Message Sign System Demonstration and Evaluation on the Virginia Connected Vehicle Test Bed 

      Park, Hyungjun; Babiceanu, Simona; Kluger, Robert; Smith, Brian; Recht, David (Connected Vehicle/Infrastructure University Transportation Center, 2016-03-15)
      Dynamic message signs (DMSs) are widely used to deliver traveler information. While these have proven to be effective, key limitations exist: (1) the locations of DMSs are fixed, (2) reading a DMS message is distracting ...
    • Control-Oriented Planar Motion Modeling of Unmanned Surface Vehicles 

      Sonnenburg, C.; Gadre, Aditya; Horner, D.; Krageland, S.; Marcus, A.; Stilwell, Daniel J.; Woolsey, C. (Virginia Center for Autonomous Systems, 2010)
      This technical report describes a comparison of experimentally identified dynamic models for the planar motion of an unmanned surface vehicle (USV). The objective is to determine a model which is (1) sufficiently rich to ...
    • Costs of Using Unmanned Aircraft on Crop Farms 

      Ireland-Otto, Nancy; Ciampitti, Ignacio A.; Blanks, Mark T.; Burton, Robert O. Jr.; Balthazor, Travis (American Society of Farm Managers and Rural Appraisers, 2016)
      Excitement is high about the potential uses of unmanned aerial systems (UAS) in agriculture. We budgeted the costs of high-yield, non-irrigated corn production on two fields on a “representative” farm located in Northeastern ...