Results 101 to 110 of about 30,882 (223)

Modelling the Impact of Hygiene and Treatment on the Dynamics of Childhood Diarrhea in Nairobi County, Kenya

International Journal of Mathematics and Mathematical Sciences
The morbidity of children under five years due to diarrhea is very prevalent in Nairobi County. Mathematical models can be used to study the dynamics of infections and suggest possible control strategies in the process.
Veronicah Nyokabi Njenga, Cyrus Gitonga Ngari, Winifred Mutuku Nduku, Livingstone Serwadda Luboobi   +3 more
doaj   +1 more source

Lee Carter mortality forecasting: application to the Italian population [PDF]

, 2005
In this paper we investigate the feasibility of using the Lee-Carter methodology to construct mortality forecasts for the Italian population. We fit the model to the matrix of Italian death rates for each gender from 1950 to 2000. A time-varying index of
Haberman, S., Russolillo, M.
core  

Ordinary Differential Equation Modeling and a Novel Zubair‐Fréchet Distribution for Cholera in Ghana With Control Strategies

Health Science Reports, Volume 9, Issue 5, May 2026.
ABSTRACT Background and Aims In this paper, we present a valuable and novel interdisciplinary study that applies a classic epidemiological model, Susceptible‐Infected‐Recovered (SIR) to capture the mean disease dynamics, with a novel Zubair Fréchet (ZF) distribution to model the extreme, heavy‐tailed nature of cholera outbreak sizes.
Kofi Afriyie Nyamekye, Eric Sampane‐Donkor, Joseph Quarshie, Franklin Asiedu‐Bekoe, Azuma Abdul‐Tawab, Justice Moses K. Aheto   +5 more
wiley   +1 more source

An Overview and Recent Developments in the Analysis of Multistate Processes

Statistics in Medicine, Volume 45, Issue 10-12, May 2026.
ABSTRACT Multistate models offer a powerful framework for studying disease processes and can be used to formulate intensity‐based and more descriptive marginal regression models. They also represent a natural foundation for the construction of joint models for disease processes and dynamic marker processes, as well as joint models incorporating random ...
Malka Gorfine, Richard J. Cook, Per Kragh Andersen, Terry M. Therneau, Pierre Joly, Hein Putter, Maja Pohar Perme, Michal Abrahamowicz, on behalf of Topic Group 8 “Survival Analysis” of the STRATOS Initiative   +8 more
wiley   +1 more source

Changing Patterns of Gender Representation in Canada's Technology Sector and the Care Economy: Two Differing Tales

Canadian Review of Sociology/Revue canadienne de sociologie, Volume 63, Issue 2, May 2026.
ABSTRACT Gender segregation is a persistent form of labour market inequality, though patterns differ across time and economic sectors. Focusing on the care economy and the technology sector, we examine longitudinal trends in gender distributions for educational credentials and occupational participation.
Neil Guppy, Maya Balzarini, Kamila Kolpashnikova, Katherine Lyon   +3 more
wiley   +1 more source

Change Point Analysis for Functional Data Using Empirical Characteristic Functionals

Journal of Time Series Analysis, Volume 47, Issue 3, Page 612-631, May 2026.
ABSTRACT We develop a new method to detect change points in the distribution of functional data based on integrated CUSUM processes of empirical characteristic functionals. Asymptotic results are presented under conditions allowing for low‐order moments and serial dependence in the data establishing the limiting null‐distribution of the proposed test ...
Lajos Horváth, Gregory Rice, Jeremy VanderDoes   +2 more
wiley   +1 more source

Calculating Value-at-Risk contributions in CreditRisk+

, 2001
Credit Suisse First Boston (CSFB) launched in 1997 the model CreditRisk+ which aims at calculating the loss distribution of a credit portfolio on the basis of a methodology from actuarial mathematics.
Haaf, Hermann, Tasche, Dirk
core   +1 more source

Existence of viscosity solutions to abstract Cauchy problems via nonlinear semigroups

Bulletin of the London Mathematical Society, Volume 58, Issue 5, May 2026.
Abstract In this work, we provide conditions for nonlinear monotone semigroups on locally convex vector lattices to give rise to a generalized notion of viscosity solutions to a related nonlinear partial differential equation. The semigroup needs to satisfy a convexity estimate, so called K$K$‐convexity, with respect to another family of operators ...
Fabian Fuchs, Max Nendel
wiley   +1 more source

Prevalence and Determinants of Caesarean Section Deliveries in Ghana: A Population-Based Cross-sectional Study

Public Health in Practice
Objectives: This study examines the prevalence and determinants of CS deliveries in Ghana, with a focus on institutional, health-related, and contextual factors.
Christiana Lokko, Jonathan Sackey, E.A. Aboagye   +2 more
doaj   +1 more source

Optimal asset allocation for aggregated defined benefit pension funds with stochastic interest rates. [PDF]

In this paper we study the optimal management of an aggregated pension fund of defined benefit type, in the presence of a stochastic interest rate. We suppose that the sponsor can invest in a savings account, in a risky stock and in a bond with the aim ...
Josa-Fombellida, Ricardo, Rincón-Zapatero, Juan Pablo   +1 more
core