Browsing Waterloo Research by Title
Now showing items 1832-1851 of 2452
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The Psychogeographies of Site-Specific Art
(HAL Open Science, 2018-07-16)Contemporary efforts at urban revitalization have encouraged an increased production of site-specific public art events that temporarily inhabit popular city hubs. These “pop up†interventions range from loosely assembled ... -
Psychological Prices at Retail Gasoline Stations: The Policies of 0-, 5-, and 9-Ending Prices
(Taylor & Francis, 2021-07-12)Psychological prices are known to impact consumer behaviour and to depend on retailers’ characteristics. Less understood is last digit pricing, especially in the context of retail gasoline stations. We study price endings ... -
PtSe2 Field-Effect Transistors: New Opportunities for Electronic Devices
(Institute of Electrical and Electronics Engineers, 2017-11-15)PtSe2, a new family of transition metal dichalcogenides, has been explored for electronic device applications using density functional theory (DFT) and non-equilibrium Green’s function (NEGF) within the third nearest ... -
Public Willingness to Pay for Water Quality Improvements in the Great Lakes Basin Before and During Covid-19
(University of Waterloo, 2023-05-15)Economic valuation of water quality improvements is an essential input to inform policy and decision-making towards sustainable watershed management. The economic values provide important insight in the wide variety of ... -
Pure Pairs VI. Excluding an Ordered Tree.
(Society for Industrial and Applied Mathematics Journal on Discrete Mathematics, 2022-01)A pure pair in a graph G is a pair (Z1,Z2) of disjoint sets of vertices such that either every vertex in Z1 is adjacent to every vertex in Z2, or there are no edges between Z1 and Z2. With Maria Chudnovsky, we recently ... -
Pure pairs. I. Trees and linear anticomplete pairs
(Elsevier, 2020-12-02)The Erdős-Hajnal conjecture asserts that for every graph H there is a constant c > 0 such that every graph G that does not contain H as an induced subgraph has a clique or stable set of cardinality at least |G|c. In this ... -
Pure pairs. II. Excluding all subdivisions of a graph
(Springer Nature, 2021-06-01)We prove for every graph H there exists ɛ > 0 such that, for every graph G with |G|≥2, if no induced subgraph of G is a subdivision of H, then either some vertex of G has at least ɛ|G| neighbours, or there are two disjoint ... -
Pure pairs. III. Sparse graphs with no polynomial-sized anticomplete pairs
(Wiley, 2020-11)A graph is H-free if it has no induced subgraph isomorphic to H, and |G| denotes the number of vertices of G. A conjecture of Conlon, Sudakov and the second author asserts that: - For every graph H, there exists ∈ > 0 ... -
Pure pairs. IV. Trees in bipartite graphs.
(Elsevier, 2023-07)In this paper we investigate the bipartite analogue of the strong Erd˝os-Hajnal property. We prove that for every forest H and every τ with 0 < τ ≤ 1, there exists ε > 0, such that if G has a bipartition (A,B) and does not ... -
Pure Pairs. IX. Transversal Trees
(Society for Industrial and Applied Mathematics, 2024)Fix k>0, and let G be a graph, with vertex set partitioned into k subsets ("blocks") of approximately equal size. An induced subgraph of G is "transversal" (with respect to this partition) if it has exactly one vertex in ... -
Pure Pairs. V. Excluding Some Long Subdivision.
(Springer, 2023-06-16)A \pure pair" in a graph G is a pair A;B of disjoint subsets of V (G) such that A is complete or anticomplete to B. Jacob Fox showed that for all " > 0, there is a comparability graph G with n vertices, where n is large, ... -
Pure pairs. VII. Homogeneous submatrices in 0/1-matrices with a forbidden submatrix
(Elsevier, 2023-07)For integer n>0, let f(n) be the number of rows of the largest all-0 or all-1 square submatrix of M, minimized over all n x n 0/1-matrices M. Thus f(n)=O(log n). But let us fix a matrix H, and define fH(n) to be the same, ... -
Pure pairs. X. Tournaments and the strong Erdos-Hajnal property.
(Elsevier ScienceDirect, 2024-01)A pure pair in a tournament G is an ordered pair (A;B) of disjoint subsets of V (G) such that every vertex in B is adjacent from every vertex in A. Which tournaments H have the property that if G is a tournament not ... -
Pyrene Excimer Fluorescence as a Direct and Easy Experimental Means to Characterize the Length Scale and Dynamics of Polypeptide
(American Chemical Society, 2018-04-26)This report provides evidence that the blobs characterized through the application of the fluorescence blob model (FBM) to the analysis of the fluorescence decays acquired with pyrene-labeled polypeptides are equivalent ... -
Pyrenyl Derivative with a Four-Atom Linker That Can Probe the Local Polarity of Pyrene-Labeled Macromolecules
(American Chemical Society, 2016-02-04)The fluorescent probe 1-pyrenemethoxyethanol (PyMeEGOH) was designed to replace commercially available 1-pyrenebutanol (PyButOH) as an alternative fluorescent label to probe the internal dynamics and interior polarity of ... -
Pyrolysis, kinetics analysis, thermodynamics parameters and reaction mechanism of Typha latifolia to evaluate its bioenergy potential
(Elsevier, 2017-09-01)This work was focused on understanding the pyrolysis of Typha latifolia. Kinetics, thermodynamics parameters and pyrolysis reaction mechanism were studied using thermogravimetric data. Based on activation energies and ... -
Quality of Dementia Care in the Community: Identifying Key Quality Assurance Components
(Canadian Geriatrics Society, 2016-12-01)Background: Primary care-based memory clinics (PCMCs) have been established in several jurisdictions to improve the care for persons with Alzheimer’s disease and related dementias. We sought to identify key quality indicators ... -
Quantification of Mixed Mode Loading and Bond Line Thickness on Adhesive Joint Strength Using Novel Test Specimen Geometry
(Elsevier, 2020-10)This study quantifies the effect of mixed mode loading and bond line thickness on adhesive joint strength or automotive structural applications. This research is motivated by the need to address the complex loading that ... -
Quantification of MUCIN 1, cell surface associated and MUCIN16, cell surface associated proteins in tears and conjunctival epithelial cells collected from postmenopausal women
(Molecular Vision, 2013-05-04)Purpose: To quantify the expression of mucin 1, cell surface associated (MUC1) and mucin 16, cell surface associated (MUC16) proteins and messenger ribonucleic acid (mRNA) in a cohort of postmenopausal women (PMW), to ... -
Quantifying entanglement of rotor chains using basis truncation: Application to dipolar endofullerene peapods
(American Institute of Physics, 2018-02-21)We propose a variational approach for the calculation of the quantum entanglement entropy of assemblies of rotating dipolar molecules. A basis truncation scheme based on the total angular momentum quantum number is proposed. ...