Results 41 to 50 of about 130 (120)

Predictive value of gB2 antibodies for maternal–fetal transmission after primary cytomegalovirus infection treated with valacyclovir

open access: yesUltrasound in Obstetrics &Gynecology, Volume 67, Issue 4, Page 455-460, April 2026.
ABSTRACT Objective To estimate the residual risk of maternal–fetal transmission after primary cytomegalovirus (CMV) infection in the periconceptional period or the first trimester in women treated with valacyclovir, and to assess whether the presence of glycoprotein B2 (gB2)‐specific immunoglobulin (Ig)‐G antibodies on immunoblot analysis refines fetal
K. O. Kagan   +6 more
wiley   +1 more source

Placental insufficiency markers to assess the risk of non‐chromosomal genetic conditions in early‐onset fetal growth restriction

open access: yesUltrasound in Obstetrics &Gynecology, Volume 67, Issue 4, Page 492-499, April 2026.
ABSTRACT Objectives To assess the value of placental insufficiency markers for estimating the risk of genetic anomalies in fetuses with isolated early‐onset fetal growth restriction (FGR), defined as an estimated fetal weight ≤ 3rd percentile diagnosed ≤ 28 + 6 weeks' gestation.
M. Armengol‐Alsina   +17 more
wiley   +1 more source

Adapting Species Risk Assessments to a Changing Climate: The Underestimated Vulnerability of Foundational Trees

open access: yesGlobal Change Biology, Volume 32, Issue 4, April 2026.
Climate change is one of the top threats to biodiversity. However, many species risk assessment frameworks, including the globally authoritative International Union for Conservation of Nature Red List, do not consistently and comprehensively incorporate loss of climatically suitable habitat into listing or threat categorization decisions.
Blair C. McLaughlin   +6 more
wiley   +1 more source

Valor en riesgo para un portafolio con opciones financieras

open access: yesRevista Ingenierías Universidad de Medellín, 2011
En este artículo se presentan y aplican diferentes formulaciones matemáticas, exactas y aproximadas, para el cálculo del valor en riesgo (VaR) de algunos portafolios con activos financieros, haciendo especial énfasis en aquellos que contienen opciones
Carlos Alexánder Grajales Correa   +1 more
doaj  

Estimación del Valor en Riesgo -VaR- para un portafolio de inversión compuesto por acciones del COLCAP bajo el método de Cópulas usando la distribución t-student

open access: yes, 2022
El Valor en Riesgo (VaR) es una medida utilizada para calcular el límite de la posible pérdida de valor de un portafolio, con un nivel de confianza definido. Existen métodos tradicionales para calcularlo, como son Simulación Histórica y Varianza-Covarianza; sin embargo, ambos se apoyan del pasado para explicar el futuro, por lo que, ante eventos que ...
Ayala Urrea, Jhon Stiwart   +1 more
openaire   +1 more source

Value at risk from the viewpoint of copulas Valor en riesgo desde un enfoque de cópulas

open access: yesAD-minister, 2009
The value at risk _VaR_, is a measure that quantifies the risks faced by a given portfolio. There are some methods to calculate the VaR: historical simulation, Montecarlo simulation, parametric models and duration and convexity models, among others.
Ana Milena Olarte Cadavid   +1 more
doaj  

[Prevalence and factors associated with eating disorders in Peruvian Human Medicine students in the context of the COVID-19 pandemic: a multicentre study]. [PDF]

open access: yesRev Colomb Psiquiatr, 2022
Pierre Zila-Velasque J   +7 more
europepmc   +1 more source

Value at risk: Teoría y aplicaciones.

open access: yesEstudios de Economía, 2001
El concepto de Value at Risk (valor del riesgo) se ha popularizado hace ya casi una década. Este artículo describe el significado de este concepto, y presenta aplicaciones sobre carteras de activos de bonos, acciones, forwards de tasa de interés y de ...
Christian Johnson
doaj  

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