Browsing Engineering (Faculty of) by Subject "stability"
Now showing items 1-20 of 24
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Application of Nonlinear Model Predictive Control to Holonomic Mobile Robots without Terminal Constraints or Costs
(University of Waterloo, 2020-09-01)The use of mobile robots greatly enhances the capability and versatility of industrial robots compared to their fixed counterpart. However, successfully deploying autonomous mobile robots is challenging and requires accurate ... -
Binding of Self-assembling Peptides to Oligodeoxynucleotides
(University of Waterloo, 2007-05-18)This thesis is an experimental investigation on the binding of self-assembling peptides to oligodeoxynucleotides (ODNs) and the characterization of the resulting peptide-ODN complexes/aggregates, the first key step in the ... -
The cold wire gas metal arc welding (CW-GMAW) process: Description and Applications
(University of Waterloo, 2020-09-11)The demand for new and reliable welding processes comes from the need to improve productivity and quality in welding of new materials used in infrastructure projects. Among the areas where this development is crucial, is ... -
Design of a Mobile Robotic Platform with Variable Footprint
(University of Waterloo, 2007-09-27)This thesis presents an in-depth investigation to determine the most suitable mobile base design for a powerful and dynamic robotic manipulator. It details the design process of such a mobile platform for use in an indoor ... -
Design of Variation-Tolerant Circuits for Nanometer CMOS Technology: Circuits and Architecture Co-Design
(University of Waterloo, 2008-11-28)Aggressive scaling of CMOS technology in sub-90nm nodes has created huge challenges. Variations due to fundamental physical limits, such as random dopants fluctuation (RDF) and line edge roughness (LER) are increasing ... -
Dynamic effects of harnessing cables on distributed parameter systems for space applications: Analytical modeling and experimental validation
(University of Waterloo, 2020-12-02)Power and data signal cables constitute a major component of lightweight spacecraft and satellite structures. These cables can account for up to as high as 30% of the structural mass and hence significantly impact the ... -
Factors Affecting Charge Collection and Photo-Stability of Organic Solar Cells
(University of Waterloo, 2015-05-07)Organic photovoltaics employ small molecules or polymers as their primary light absorbing materials and thus differ strongly from traditional silicon-based photovoltaics. Their primary technological benefit is a significant ... -
Global Stability of a Class of Difference Equations on Solvable Lie Algebras
(Springer, 2020-06-17)Motivated by the ubiquitous sampled-data setup in applied control, we examine the stability of a class of difference equations that arises by sampling a right- or left-invariant flow on a solvable matrix Lie group. The map ... -
The Influence of Charge Transport Layer Interfaces on the Performance of Electroluminescent Colloidal Quantum Dot Light-Emitting Devices
(University of Waterloo, 2020-08-13)Electroluminescent quantum dot light-emitting devices (QDLEDs) are a relatively new technology for displays that have all of the benefits of emissive displays commonly associated with organic light-emitting devices (OLEDs) ... -
Investigating the Causes of the Lower Electroluminescence Stability of OLEDs with Solution-Coated versus Vacuum-Deposited Host:Guest Systems
(University of Waterloo, 2023-08-22)Organic light-emitting devices (OLEDs) are increasingly being used in commercial flat display products from mobile phones and smart watches to televisions. Although OLEDs have become a recognizable product to consumers ... -
Investigation of Electroluminescence Degradation in Anthracene-based Organic Light-Emitting Devices
(University of Waterloo, 2010-09-29)Organic light-emitting devices (OLEDs) have attracted significant attention because of their unique advantages for flat panel display applications. However, the relatively limited electroluminescence (EL) stability of blue ... -
Low-Power, Low-Voltage SRAM Circuits Design For Nanometric CMOS Technologies
(University of Waterloo, 2011-08-30)Embedded SRAM memory is a vital component in modern SoCs. More than 80% of the System-on-Chip (SoC) die area is often occupied by SRAM arrays. As such, system reliability and yield is largely governed by the SRAM's performance ... -
Novel Copolymers Based on Methoxythiophene-Flanked Diketopyrrolopyrrole for Wearable Resistive Sensors
(University of Waterloo, 2024-04-25)The exposure that firefighters experience due to their occupation has recently been identified by the World Health Organization as a Group 1 carcinogen. One factor is colorless, odorless, toxic gases in “warm zones” near ... -
One-pot synthesis of porous silica-supported ultrafine Ni nanoparticles as efficient and stable catalyst for selective hydrogenation of benzophenone
(Elsevier, 2019-12-15)In this work, we report a silica-supported ultrafine Ni catalyst for the selective hydrogenation of benzophenone. This material was developed by a facile one-pot co-assembly syntheses strategy, using Ni(II) chelated alginate ... -
Phase-Locked Loop Stability Based on Stochastic Bounds
(Springer, 2015-08-11)In this paper we study the stability of a phase-locked loop (PLL) in the presence of noise. We represent the noise as Brownian motion and model the circuit as a nonlinear stochastic differential equation, with the noise ... -
Poly-L-arginine Coated Silver Nanoprisms and Their Anti-Bacterial Properties
(Multidisciplinary Digital Publishing Institute, 2017-09-27)The aim of this study was to test the effect of two different morphologies of silver nanoparticles, spheres, and prisms, on their antibacterial properties when coated with poly-L-arginine (poly-Arg) to enhance the interactions ... -
Sampled-Data Control of Invariant Systems on Exponential Lie Groups
(University of Waterloo, 2019-08-28)This thesis examines the dynamics and control of a class of systems furnished by kinematic systems on exponential matrix Lie groups, when the plant evolves in continuous-time, but whose controller is implemented in ... -
Stability of compressible boundary layers in presence of smooth roughness and wall temperature effects
(University of Waterloo, 2023-01-26)In natural laminar flow design, aircraft manufacturers aim to delay the laminar-to-turbulent transition by modifying the geometric features of the aircraft to stabilize the boundary layer. Yet, the transitional process is ... -
Stability-based fire resistance duration of unbraced steel frames
(Journal of Structural Fire Engineering, 2020)Purpose The collapse of a structure resulting from the instability of steel frames due to fire is the worst failure mode to consider in fire-structural engineering, and should be avoided. The purpose of this paper is to ... -
Stabilizing the Psychological Dynamics of People in a Crowd
(University of Waterloo, 2008-08-25)This thesis investigates the use of control theory as a means to study and ultimately control the psychological dynamics of people in a crowd. Gustav LeBon's suggestibility theory, a well-known account of collective ...