Browsing Waterloo Research by Title
Now showing items 1282-1301 of 2435
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Load path sensitivity and fatigue life estimation of 30CrNiMo8HH
(Elsevier, 2012-04-01)A set of strain-controlled biaxial proportional and non-proportional tests were conducted on solid and tubular specimens of 30CrNiMo8HH steel. The effect of the phase angle on fatigue life was studied. This effect becomes ... -
Load-sharing and kinematics of the human cervical spine under multi-axial transverse shear loading: combined experimental and computational investigation
(National Library of Medicine, 2021-06)The cervical spine experiences shear forces during everyday activities and injurious events yet there is a paucity of biomechanical data characterizing the cervical spine under shear loading. This study aimed to 1) ... -
Local nested transverse feedback linearization
(Springer, 2015-08-29)We study two local feedback equivalence problems for a nonlinear control-affine system with two nested, controlled-invariant, embedded submanifolds in its state space. The first, less restrictive, result gives necessary ... -
Local observers on linear Lie groups with linear estimation error dynamics
(IEEE, 2014-03-06)This technical note proposes local exponential observers for systems on linear Lie groups. We study two classes of systems. In the first class, the full state of the system evolves on a linear Lie group and is available ... -
A Local Solution to the Output Regulation Problem for Sampled-Data Systems on Commutative Matrix Lie Groups
(IEEE, 2018-08-16)We present a smooth nonlinear control law for a kinematic plant on commutative matrix Lie groups that achieves regulation, if the state tracking and estimation errors are initialized in a suitable neighbourhood of identity. ... -
Local synchronization of sampled-data systems on one-parameter Lie subgroups
(IEEE, 2017-07-03)We present a distributed nonlinear control law for synchronization of identical agents on one-parameter Lie subgroups. If the agents are initialized sufficiently close to one another, then synchronization is achieved ... -
Local transverse feedback linearization for nested sets
(IEEE, 2016-02-11)We study a local feedback equivalence problem for a nonlinear control-affine system with two nested, controlled invariant, embedded submanifolds in its state space. The main result of this paper gives necessary and sufficient ... -
Locally-Adaptive Tabulation of Low-Dimensional Manifolds using Bezier Patch Reconstruction
(2017-05-17)An efficient tabulation strategy for turbulent combustion simulations is proposed. Using a locally adaptive arrangement of structured Bezier patches–often used in computer graphics–the combustion manifold can be efficiently ... -
Long Range Polymer Chain Dynamics Studied by Fluorescence Quenching
(American Chemical Society, 2016-09-13)Over the years, fluorescence quenching experiments have provided a robust analytical means to retrieve information about the internal dynamics of macromolecules in general and the long range polymer chain dynamics (LRPCD) ... -
Long-distance Movement over a Period of Days by a Female Myotis lucifugus in Newfoundland, Canada
(Humboldt Field Research Institute, 2021-02)Myotis lucifugus (Little Brown Myotis) is a regionally migrating bat, widely distributed throughout North America. Through long-term monitoring systems deployed in 2 locations in Newfoundland, Canada, we recorded the ... -
Long-Range, Polymer Chain Dynamics of a "Stiff" Polymer. Fluorescence from Poly(isobutylene-alt-maleic anhydride) with N-(1-Pyrenylmethyl)succinimide Groups
(American Chemical Society, 2017-04-25)The steady-state fluorescence (SSF) spectra and time resolved fluorescence (TRF) decays of five poly(isobutylene-alt-maleic anhydride) copolymers (PIMA), randomly labeled with N-(1-pyrenyl methyl)succinimide groups (Py-PIMA), ... -
Long-term Average Cost in Featured Transition Systems
(ACM, 2016-09)A software product line is a family of software products that share a common set of mandatory features and whose individual products are differentiated by their variable (optional or alternative) features. Family-based ... -
Long-term implantation of acoustic transmitters induces chronic inflammatory cytokine expression in adult rainbow trout (Oncorhynchus mykiss)
(Elsevier, 2018-11-01)Telemetry transmitters are frequently used in studies of wild fish migration and behavior. Although the effects of surgically implanted transmitters on survival, tag retention, healing and growth have been studied, there ... -
A longitudinal evaluation of food safety knowledge and attitudes among Ontario high school students following a food handler training program
(Elsevier, 2017-06)Youth are a unique audience for food safety education, in part due to low food safety knowledge. Although the effectiveness of such education has been explored for primary school and college students, no studies have ... -
The longitudinal impact of diet, physical activity, sleep, and screen time on Canadian adolescents' academic achievement: An analysis from the COMPASS study
(Elsevier, 2019-08)Adequate amounts of physical activity, sleep, and screen time along with a healthy diet have been demonstrated to have positive associations with academic achievement. No longitudinal study has investigated the simultaneous ... -
Longitudinal vehicle state estimation using nonlinear and parameter-varying observers
(Elsevier, 2017-05)A corner-based velocity estimation approach is proposed which is used for vehicle’s traction and stability control systems. This approach incorporates internal tire states within the vehicle kinematics and enables the ... -
Lost in the Infinite Archive: The Promise and Pitfalls of Web Archives
(Edinburgh University Press, 2016-03-14)Contemporary and future historians need to grapple with and confront the challenges posed by web archives. These large collections of material, accessed either through the Internet Archive's Wayback Machine or through other ... -
Low back pain development differentially influences centre of pressure regularity following prolonged standing
(Elsevier, 2017-06-27)Occupations requiring prolonged periods of static standing are associated with the development of low back pain (LBP). Certain individuals are susceptible to LBP development during prolonged standing (pain developers, PDs) ... -
Low Density Polyethylene, Expanded Polystyrene and Expanded Polypropylene: Strain Rate and Size Effects on Mechanical Properties
(Elsevier ScienceDirect, 2016-08)Polymeric foam materials may be used as energy absorbing materials for protection in impact scenarios, and design with these materials requires the mechanical properties of foams across a range of deformation rates, where ... -
Low Temperature Insights into the Crystal and Magnetic Structure of a Neutral Radical Ferromagnet
(Royal Society of Chemistry, 2021-09-16)The crystal structure of the radical ferromagnet 1a at 2 K reveals a contraction in the unit cell c constant which, at the molecular level, translates into a decrease in slippage of the radical π-stacks and an increase in ...