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An Integrated Systems Methodology For Pedestrian Traffic Flow Analysis, Richard Thomas Romer
An Integrated Systems Methodology For Pedestrian Traffic Flow Analysis, Richard Thomas Romer
UNLV Retrospective Theses & Dissertations
The typical urban pedestrian transportation system involves three basic elements: sidewalks or walkways; midblock or intersection corner, holding, or queueing areas; and pedestrian crossings of roads, rail lines, or other physical features. The pedestrians on sidewalks or walkways have operating characteristics analogous to motorized vehicles on roadways. Each critical pedestrian element has been considered individually, but not as a balanced system, especially at the most critical link--the signalized urban intersection; In this research, a methodology and guidelines have been developed to analyze existing pedestrian elements at a signalized intersection, i.e., the sidewalk, intersection corner, and crosswalk; with a systems approach …
Development Of An Automated Throw Room And Hvac Component Acoustic Test Systems, Michael Anthony Schwob
Development Of An Automated Throw Room And Hvac Component Acoustic Test Systems, Michael Anthony Schwob
UNLV Retrospective Theses & Dissertations
Two facilities for the testing of commercial and residential HVAC air delivery components were developed for the UNLV Ventilation and Acoustic Systems Technology (VAST) Lab. One facility, referred to as the HVAC Acoustic Test Facility (HCATS), will be used to measure the acoustic characteristics of in-duct and duct terminating components. This system will augment the test facility currently used for in-duct passive silencer testing. The other new facility will be used to rate the air performance of HVAC interior inlets and outlets. This system is commonly referred to as a throw room; HCATS includes a supply air fan and closed …
Dynamic Task Distribution In A Heterogeneous Loosely-Coupled Distributed Computer System, Samuel K West
Dynamic Task Distribution In A Heterogeneous Loosely-Coupled Distributed Computer System, Samuel K West
UNLV Retrospective Theses & Dissertations
This thesis studies the problem of dynamic distribution of tasks between hosts in a heterogeneous, loosely-coupled, distributed computing system. The goals of the study are to (a) demonstrate reduced execution time in a computer program making subroutine calls to be executed on a computer (or computers) which will yield better performance than the one on which the program was initiated, (b) demonstrate the feasibility of dynamic task-to-host binding, (c) demonstrate the feasibility of a programmer-transparent methodology of distributed computing using a library approach. These goals are partially realized using the Remote Procedure Call protocol in a programmer-transparent framework of library …
Automated Robotics System For Nuclear Waste Handling (Hardware And Software), William Michael O'Donnell
Automated Robotics System For Nuclear Waste Handling (Hardware And Software), William Michael O'Donnell
UNLV Retrospective Theses & Dissertations
Hazardous materials handling involves the use of robotics manipulators, which are controlled by operators outside a sealed environment. The operator's reduced vision and decreased dexterity causes slower job performance and fatigue, which ultimately leads to mistakes. These mistakes can be dangerous, expensive, and time consuming to clean up. Thus, the goal of this thesis is to lay the foundation for a safety system that could be implemented in the Waste Isolation Pilot Plan (WIPP) at Argonne National Labs West (ANLW). The safety system should both reduce operator error and prevent costly mistakes; The system consists of a computer and accompanying …
Feedback Linearization Of Nonminimum Phase Systems And Control Of Aeroelastic Systems And Undersea Vehicles, Francis M Chockalingam
Feedback Linearization Of Nonminimum Phase Systems And Control Of Aeroelastic Systems And Undersea Vehicles, Francis M Chockalingam
UNLV Retrospective Theses & Dissertations
The thesis presents the design of feedback control systems for a class of nonminimum phase single input-single output nonlinear systems. The linearized system is assumed to have one unstable zero. Since asymptotic or exact tracking of output trajectory cannot be accomplished, an approximate output is derived by neglecting the unstable zero. Based on the inversion of the new input-output map, a feedback linearizing control is derived; These results are applied to control an aeroelastic system and a small undersea vehicle. For pitch angle control and plunge motion regulation, an inverse control system is designed for the aeroelastic system. Simulation results …