Results 171 to 180 of about 166,151,046 (211)

Experimental methods in chemical engineering: The scientific method versus engineering design methodology

open access: yesThe Canadian Journal of Chemical Engineering, EarlyView.
Abstract Engineering graduate students confuse the scientific method and problem solving when presenting their pre‐doctoral exams and theses: Science discourse adopts question and hypotheses to assert and establish a study's rationale, while it is problem and objectives in engineering design.
Gregory S. Patience   +4 more
wiley   +1 more source

Hidden Markov graphical models with state‐dependent generalized hyperbolic distributions

open access: yesCanadian Journal of Statistics, EarlyView.
Abstract In this article, we develop a novel hidden Markov graphical model to investigate time‐varying interconnectedness between different financial markets. To identify conditional correlation structures under varying market conditions and accommodate shape features embedded in financial time series, we rely upon the generalized hyperbolic family of ...
Beatrice Foroni   +2 more
wiley   +1 more source

Collective posterior inference from highly variable empirical replicates. [PDF]

open access: yesPLoS Comput Biol
Ben Nun N, Rosset S, Gresham D, Ram Y.
europepmc   +1 more source

Copula‐based joint modelling of emergency department visits with time‐varying dependence

open access: yesCanadian Journal of Statistics, EarlyView.
Abstract Jointly modelling multiple correlated count time series is essential in health services research, where outcomes like emergency visits for mental health and substance use often evolve together. Ignoring these dependencies can obscure meaningful trends and limit the effectiveness of policy evaluation.
Guanjie Lyu, Cindy Feng, Lihui Liu
wiley   +1 more source

Sparse maximum likelihood estimation of regression models

open access: yesCanadian Journal of Statistics, EarlyView.
Abstract For regression model selection and estimation, we study a small set of candidate models of maximum likelihood from which all information criteria such as the Akaike information criterion (AIC) and the Bayesian information criterion (BIC) choose their models.
Min Tsao
wiley   +1 more source

Association of Urinary pH With Overall Survival in Patients With Stage IV Cancer: A Single‐Center Retrospective Cohort Study

open access: yesCancer Nexus, EarlyView.
ABSTRACT Objective This single‐center retrospective cohort study evaluated whether, among patients with stage IV cancer who participated in a pragmatic “alkalization therapy”—defined as a low potential renal acid load diet plus oral sodium bicarbonate and/or potassium/sodium citrate—urinary pH was associated with long‐term survival.
Shion Kachi   +5 more
wiley   +1 more source

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