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A Mathematical Model For Computerized Car Crash Detection Using Computer Vision Techniques, Dawn Marie Strianese
A Mathematical Model For Computerized Car Crash Detection Using Computer Vision Techniques, Dawn Marie Strianese
UNLV Retrospective Theses & Dissertations
My proposed approach to the automatic detection of traffic accidents in a signalized intersection is presented here. In this method, a digital camera is strategically placed to view the entire intersection. The images are captured, processed and analyzed for the presence of vehicles and pedestrians in the proposed detection zones. Those images are further processed to detect if an accident has occurred; The mathematical model presented is a Poisson distribution that predicts the number of accidents in an intersection per week, which can be used as approximations for modeling the crash process. We believe that the crash process can be …
Mathematical Model To Simulate A Hybrid Lighting System, Ahmad Abu Heiba
Mathematical Model To Simulate A Hybrid Lighting System, Ahmad Abu Heiba
UNLV Retrospective Theses & Dissertations
Hybrid solar lighting (HSL) technology is a relatively new technology to utilize natural sunlight along with the traditional electric lighting to light the interior spaces. HSL systems concentrate the sunlight onto a bundle of optical fibers. The optical fibers are routed into the interior space and coupled with cylindrical rods to diffuse the light. A lighting sensor modulates the amount of electric energy depending on the amount of natural light available; This study presents a simplified mathematical model to predict the output of the HSL system based on the amount of the available solar radiation. The model is verified via …
Mathematical Modeling Of Magnetohydrodynamic Micropumps, Juan Katoff Afonien
Mathematical Modeling Of Magnetohydrodynamic Micropumps, Juan Katoff Afonien
UNLV Retrospective Theses & Dissertations
A lab-on-a-chip (LOC) system is a minute chemical processing plant consisting of interconnected networks of microchannels and reservoirs operating with small volumes of reagents. In many LOC systems, it is necessary to propel fluids from one part of the device to another, control fluid motion, stir and interact various reagents, and detect the presence of target analytes. In LOC systems, these tasks are far from trivial; This thesis focuses on fluid propulsion under the action of electric and magnetic fields. Both Non-RedOx and RedOx-based Magneto-hydrodynamic (MHD) micropumps, in which the flow is directed by judicious interplay between electric and magnetic …
A General Mathematical Model Of Stenoses, Jordan Jimmy Crabbe
A General Mathematical Model Of Stenoses, Jordan Jimmy Crabbe
UNLV Retrospective Theses & Dissertations
Incidence and the prevalence rate of stroke in the United States has been of great concern to the Centers for Disease Control and prevention (CDC), National Center for Health Statistics (NCHS), the American Society of Stroke, American Stroke Association and the U.S. government as a whole; Many mathematical models of the stroke problem have been proposed and solved using diverse methods and computations. Most of the models are based on the stenoses, occlusion or rupture of the artery and the formation of cerebral aneurysms, which all lead to the occurrence of stroke; This paper utilizes a direct approach to change …
Mathematical Models For Interendothelial Cleft, Bin Chen
Mathematical Models For Interendothelial Cleft, Bin Chen
UNLV Retrospective Theses & Dissertations
Vascular endothelium is the principal barrier to, and regulator of, material exchange between circulating blood and the body tissues. Based on previous research in this field, two new theoretical models have been developed in this thesis. One is to investigate structural mechanisms in the regulation of microvessel permeability by cAMP. The other is to examine the charge effects of surface glycocalyx on microvessel permeability; To investigate the microstructural mechanisms of decreasing microvascular permeability induced by the enhancement of intraendothelial adenosine 3 ',5'-cyclic monophosphate (CAMP) levels, we extended the previous analytical model developed by Fu et al. (1994) for the interendothelial …
Mathematical Modeling, Trajectory And Vibrations Control Of A Three Link Flexible Robot, Satish Jupudi
Mathematical Modeling, Trajectory And Vibrations Control Of A Three Link Flexible Robot, Satish Jupudi
UNLV Retrospective Theses & Dissertations
The objective of this thesis is to study the dynamics and control of a three link flexible robot. The Lagrange equations are used for deriving the equations of motion of this three link flexible robot. The equations of motion of this robot are derived by using a mathematical and symbolic manipulation software known as MACSYMA. The vibration mode shapes are approximated by using assumed mode method. A PID 'proportional, integral and differential' controller is used in this system to control the input torques to obtain desired joint angles trajectory. Linear stabilizers are introduced to suppress the vibrations of the links …
The Effects Of Mathematics Methods Courses On The Mathematical Attitudes, Content Knowledge, And Pedagogical Beliefs Of Preservice Teachers, Robert John Quinn
The Effects Of Mathematics Methods Courses On The Mathematical Attitudes, Content Knowledge, And Pedagogical Beliefs Of Preservice Teachers, Robert John Quinn
UNLV Retrospective Theses & Dissertations
This study investigated the effects of mathematics methods courses on the mathematical attitudes, content knowledge, and pedagogical beliefs of preservice elementary teachers and preservice secondary mathematics teachers. The study was conducted during the fall semester of 1992 at the University of Nevada, Las Vegas. Forty-seven preservice teachers participated voluntarily. Twenty-eight were enrolled in an elementary mathematics methods course; nineteen were enrolled in a secondary mathematics methods course; Attitudes toward mathematics were studied quantitatively by administering Aiken's Revised Attitude Scale on a pretest-posttest basis. The results indicated that the attitude toward mathematics of preservice elementary teachers improved significantly. The attitude toward …