Browsing Waterloo Research by Title
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Polymeric Foaming Predictions from the SanchezLacombe Equation of State: Application to PolypropyleneCarbon Dioxide Mixtures
(American Physical Society, 2017)A simple offlattice method of deriving the SanchezLacombe equation of state is presented. The SanchezLacombe equation of state for mixtures is shown to be thermodynamically inconsistent for all mixing rules in such a ... 
Polymeric rapid prototyping for inexpensive and portable medical diagnostics
(Society of Photooptical Instrumentation Engineers, 20121024)The advent of inexpensive CO2 laser systems has led to a wide range of demonstrations of microfabricated lab on chip systems built of acrylic. However, there has been little application of these systems to building ... 
Polymerization Data Mining: A Perspective
(Wiley, 20190401)Nowadays, ‘Data mining’ is widely proposed by data scientists as the most accepted and powerful approach to properly handle the information explosion. Data mining is defined as the extraction of interesting patterns and ... 
Polynomial bounds for chromatic number II: Excluding a starforest
(Wiley, 202210)The Gyárfás–Sumner conjecture says that for every forest H, there is a function fH such that if G is Hfree then x(G) ≤ fH(w(G)) (where x,w are the chromatic number and the clique number of G). Louis Esperet conjectured ... 
Polynomial bounds for chromatic number VI. Adding a fourvertex path
(Elsevier, 202305)A hereditary class of graphs is bounded if there is a function f such that every graph G in the class has chromatic number at most f(!(G)), where !(G) is the clique number of G; and the class is polynomially bounded ... 
Polynomial bounds for chromatic number VII. Disjoint holes.
(Wiley, 202311)A hole in a graph G is an induced cycle of length at least four, and a kmultihole in G is the union of k pairwise disjoint and nonneighbouring holes. It is well know that if G does not contain any holes then its chromatic ... 
Polynomial bounds for chromatic number VII. Disjoint holes.
(Wiley, 20230514)A hole in a graph G is an induced cycle of length at least four, and a kmultihole in G is the union of k pairwise disjoint and nonneighbouring holes. It is well known that if G does not contain any holes then its chromatic ... 
Polynomial bounds for chromatic number. I. Excluding a biclique and an induced tree
(Wiley, 20220907)Let H be a tree. It was proved by Rödl that graphs that do not contain H as an induced subgraph, and do not contain the complete bipartite graph Kt,t as a subgraph, have bounded chromatic number. Kierstead and Penrice ... 
Polynomial bounds for chromatic number. III. Excluding a double star
(Wiley, 202210)A “double star” is a tree with two internal vertices. It is known that the GyárfásSumner conjecture holds for double stars, that is, for every double star H, there is a function fH such that if G does not contain H as ... 
Polynomial Bounds for Chromatic Number. IV: A Nearpolynomial Bound for Excluding the Fivevertex Path
(Springer, 20230915)A graph G is H free if it has no induced subgraph isomorphic to H. We prove that a P5free graph with clique number ω ≥ 3 has chromatic number at most ωlog2(ω). The best previous result was an exponential upper bound ... 
The polytomous discrimination index for prediction involving multistate processes under intermittent observation
(John Wiley & Sons Ltd., 20220830)With the increasing importance of predictive modeling in health research comes the need for methods to rigorously assess predictive accuracy. We consider the problem of evaluating the accuracy of predictive models for ... 
Pompeius und die ,elf Städte‘ der Provinz Pontus
(Franz Steiner Verlag, 20221201)The line of events from the death of Nikomedes IV through the Third Mithradatic War (73–63 BC) to the ratification of Pompey’s Eastern acts in Rome in 59 BC is well documented in our sources and wellstudied in modern ... 
Pore network modeling of fibrous gas diffusion layers for polymer electrolyte membrane fuel cells
(Elsevier, 20071108)A pore network model of the gas diffusion layer (GDL) in a polymer electrolyte membrane fuel cell is developed and validated. The model idealizes the GDL as a regular cubic network of pore bodies and pore throats following ... 
Pore network modeling of phase change in PEM fuel cell fibrous cathode
(Springer, 20171201)A pore network model has been applied to the cathode side of a fuel cell membrane electrode assembly to investigate the mechanisms leading to liquid water formation in the cell. This model includes mass diffusion, liquid ... 
Pore network modeling of reactiondiffusion in hierarchical porous particles: the effects of microstructure
(Elsevier, 20170724)A general framework based on pore network modeling is presented for simulation of reactive transport in a porous catalyst with a hierarchy of porosity. The proposed framework is demonstrated in the context of steady state ... 
Porous chitosan microspheres as microcarriers for 3D cell culture
(Elsevier, 20181215)Highly porous chitosan microspheres (CSM) were prepared through emulsionbased thermally induced phase separation (TIPS) without using toxic crosslinkers and chemical porogenic agents other than ice. The CSM had an average ... 
The Positive and Negative Influence of Search Results on People's Decisions about the Efficacy of Medical Treatments
(ACM, 20171001)People regularly use web search engines to investigate the efficacy of medical treatments. Search results can contain documents that present incorrect information that contradicts current established medical understanding ... 
Positive Gaming: Workshop on Gamification and Games for Wellbeing
(Association for Computing Machinery, 20171015)Gamification and games have been used and studied in a variety of applications related with health and wellbeing. Nevertheless, there are very few studies aimed at designing games (whether serious games or recreational ... 
A Positivedefinite Cutcell Method for Strong Twoway Coupling Between Fluids and Deformable Bodies
(Association for Computing Machinery, 20170728)We present a new approach to simulation of twoway coupling between inviscid free surface fluids and deformable bodies that exhibits several notable advantages over previous techniques. By fully incorporating the dynamics ... 
PostHackathon Learning Circles: Supporting Lean Startup Development
(ACM, 20200425)Hackathons provide rapid, handson opportunities to explore innovative solutions to problems, but provide little support to teams in moving those solutions into practice. We explore the use of posthackathon Learning Circles ...