Browsing Waterloo Research by Title
Now showing items 1868-1887 of 2462
-
A quasi-experimental study of a mandatory calorie-labelling policy in restaurants: Impact on use of nutrition information among youth and young adults in Canada
(Elsevier, 2018-11-01)In 2017, Ontario became the first Canadian province to require calorie amounts on menus/menu boards of chain restaurants. The province of British Columbia (BC) implemented a voluntary nutrition information initiative in ... -
Quasi-static and dynamic characterization of unidirectional non-crimp carbon fiber fabric composites processed by HP-RTM
(Elsevier, 2019-07)Recently developed high-pressure resin transfer molding (HP-RTM) processes have enabled the integration of lightweight fiber-reinforced composites into automobiles (e.g., frame and roof components, floor segments), which ... -
Quasidiagonal weighted shifts on directed trees
(Instytut Matematyczny, 2023)We investigate quasidiagonality of weighted shifts on directed trees. We concentrate mainly on a subclass of weighted shifts operators called adjacency operators. In particular, we provide equivalent conditions for ... -
The Queer and Feminist Worlds of Witches & Magical Beings in Feminist YA Graphic Novels
(MAI, 2023-03-30)The figure of the witch currently offers a compelling manifestation of the desires and anxieties of our social moment particularly around gender, equity, and misogyny. With this current reemergence of the witch figure in ... -
Quotient Complexities of Atoms in Regular Ideal Languages
(Institute of Informatics: University of Szeged, 2015)A (left) quotient of a language L by a word w is the language w(-1) L = {x vertical bar wx is an element of L}. The quotient complexity of a regular language L is the number of quotients of L; it is equal to the state ... -
Quotient Complexity of Bifix-, Factor-, and Subword-Free Regular Language
(Institute of Informatics: University of Szeged, 2014)A language $L$ is prefix-free if whenever words $u$ and $v$ are in $L$ and $u$ is a prefix of $v$, then $u=v$. Suffix-, factor-, and subword-free languages are defined similarly, where by ``subword" we mean ``subsequence", ... -
Quotient Complexity Of Closed Languages
(Springer, 2014-02-01)A language L is prefix-closed if, whenever a word w is in L, then every prefix of w is also in L. We define suffix-, factor-, and subword-closed languages in an analogous way, where by factor we mean contiguous subsequence, ... -
Quotient Complexity of Ideal Languages
(Elsevier, 2013-01-28)A language L over an alphabet Σ is a right (left) ideal if it satisfies L=LΣ∗ (L=Σ∗L). It is a two-sided ideal if L=Σ∗LΣ∗, and an all-sided ideal if L=Σ∗L, the shuffle of Σ∗ with L. Ideal languages are not only of interest ... -
Quotient Complexity Of Star-Free Languages
(World Scientific Publishing, 2012-09-01)The quotient complexity, also known as state complexity, of a regular language is the number of distinct left quotients of the language. The quotient complexity of an operation is the maximal quotient complexity of the ... -
The r-coloring and maximum stable set problem in hypergraphs with bounded matching number and edge size
(Elsevier, 2023-04)Motivated by the analogous questions in graphs, we study the complexity of coloring and stable set problems in hypergraphs with forbidden substructures and bounded edge size. Letting v(g) denote the maximum size of a ... -
Ra-228, Ra-226, Ra-224 and Ra-223 in potential sources and sinks of land-derived material in the German Bight of the North Sea: implications for the use of radium as a tracer
(Springer, 2011-08-01)Activities of the naturally occurring radium nuclides Ra-228, Ra-226, Ra-224 and Ra-223 were determined in waters of the open German Bight and adjacent nearshore areas in the North Sea, in order to explore the potential ... -
Rainbow trout exposed to benzo[a]pyrene yields conserved microRNA binding sites in DNA methyltransferases across 500 million years of evolution
(Springer, 2017-12-04)The objective of this study was to examine the regulation of DNA methylation following acute (24 h) and prolonged (14 d) exposure to low (1 ng/L) and high (10 ng/L) benzo[a]pyrene. However, with the recent release of the ... -
Ramsey-nice families of graphs
(Elsevier, 2018-08)For a finite family $\cF$ of fixed graphs let $R_k(\cF)$ be the smallest integer $n$ for which every $k$-coloring of the edges of the complete graph $K_n$ yields a monochromatic copy of some $F\in\cF$. We say that $\cF$ ... -
Random forcing of geostrophic motion in rotating stratified turbulence
(AIP, 2017-12-29)Random forcing of geostrophic motion is a common approach in idealized simulations of rotating stratified turbulence. Such forcing represents the injection of energy into large-scale balanced motion, and the resulting ... -
Random locations of periodic stationary processes
(Elsevier, 2019-03)We consider a family of random locations, called intrinsic location functionals, of periodic stationary processes. This family includes but is not limited to the location of the path supremum and first/last hitting times. ... -
A randomized trial testing deviant modeling, peer gender, and theft: replication and extension
(2019)Objectives: Replicate previous experimental findings on the causal effect of deviant peer modeling and assess whether the gender of peer models is an important determinant of theft. Methods: A randomized control trial ... -
Ranges of vector states on irreducible operator semigroups
(Springer, 2016)Let 𝜑 be a linear functional of rank one acting on an irreducible semigroup S of operators on a finite- or infinite-dimensional Hilbert space. It is a well-known and simple fact that the range of 𝜑 cannot be a singleton. ... -
Rapid determination of immunosuppressive drug concentrations in whole blood by coated blade spray-tandem mass spectrometry (CBS-MS/MS)
(Elsevier, 2018-01-25)Coated Blade Spray (CBS) is a technology that efficiently integrates sample preparation and direct coupling to mass spectrometry (MS) on a single device. In this article, we present CBS-tandem mass spectrometry (CBS-MS/MS) ... -
Rapid prediction of real-time thermal characteristics, solidification parameters and microstructure in laser directed energy deposition (powder-fed additive manufacturing)
(Elsevier, 2019-12)The localized thermal characteristics, solidification parameters and the corresponding microstructure depend highly on the process parameters in the laser powder-fed additive manufacturing (LPF-AM) process. However, ... -
Rapid Review of SARS-CoV-1 and SARS-CoV-2 Viability, Susceptibility to Treatment, and the Disinfection and Reuse of PPE, Particularly Filtering Facepiece Respirators
(Multidisciplinary Digital Publishing Institute, 2022-08-22)In the COVID-19 pandemic caused by SARS-CoV-2, hospitals are often stretched beyond capacity. There are widespread reports of dwindling supplies of personal protective equipment (PPE), particularly N95-type filtering ...