Results 51 to 60 of about 31,659,859 (205)

Valoración de una empresa de agua potable mediante opciones reales

Industrial Data, 2016
Valorar una empresa representa un desafío mayor ya que es necesario incorporar los diversos factores de riesgo, para determinar su valor “justo”. La metodología de opciones reales muestra un precio por acción de la empresa Aguas Andinas S.A.
Mauricio Gutiérrez Urzúa, Jorge Henríquez Cancino   +1 more
doaj   +1 more source

Simultaneous Generation of Topographic Models and Manning Roughness Coefficient Maps From Tri‐Stereoscopic Satellite Images: Application to the Huarmey River, Peru

The Photogrammetric Record, Volume 41, Issue 195, July‐September 2026.
Tri‐stereoscopic PeruSat‐1 imagery enables the simultaneous generation of 0.70 m‐resolution topography and spatially distributed Manning roughness maps, achieving 0.434 m vertical accuracy. Integrated into HEC‐RAS, these products provide consistent, high‐resolution inputs that improve hydraulic modelling and flood risk assessment in data‐scarce river ...
Jorge L. Miranda‐Pita, Pedro A. Plaza‐Álvarez, Jorge Lopez‐Rebollo, Diego González‐Aguilera   +3 more
wiley   +1 more source

Estimación del riesgo en un portafolio de activos

Apuntes del CENES, 2013
Este trabajo introduce el uso de la teoría de valor extremo (EVT) y cópulas para la estimación del valor en riesgo (VaR). Se considera como aplicación a un portafolio compuesto por tres activos representativos del mercado colombiano.
Luis Guillermo Díaz, Diana A Maldonado, Sandra Milena Salinas   +2 more
doaj  

Mixed‐methods systematic review exploring the associations underpinning active outdoor play with connection to nature and environmental stewardship

People and Nature, Volume 8, Issue 6, Page 1705-1727, June 2026.
Abstract Active outdoor play has been positioned in the literature as an opportunity to address concerns over climate (in)action and the rising trend of disconnection from the outdoors and nature. The objective of this systematic review was to examine associations between active outdoor play and people's connection to nature and/or environmental ...
Louise de Lannoy, Brianna Nasrallah, Nicholas Hayhow, Ulises Charles‐Rodriguez, Kimberly Squires, Zainab Badruddin, Justin J. Lang, Shawnda A. Morrison, Po‐Yu Wang, Mark S. Tremblay, Eun‐Young Lee   +10 more
wiley   +1 more source

Evaluación de la categoría de riesgo de extinción del cedro rojo (Cedrela odorata) en México

Revista Mexicana de Biodiversidad, 2018
Cedrela odorata es una especie neotropical, protegida por CITES y la UICN. Desde 2011, en México se considera como especie sujeta a protección especial (Pr) NOM-059-Semarnat-2010 (Semarnat, 2010a).
Carlos Alberto Ruiz-Jiménez, Héctor Manuel De los Santos-Posadas, José F. Parraguirre-Lezama, Fabiola Dafne Saavedra-Millán   +3 more
doaj   +1 more source

Participatory fuzzy cognitive modelling reveals leverage points for agroecological adoption in the Central Valleys of Oaxaca

People and Nature, Volume 8, Issue 6, Page 1817-1831, June 2026.
Abstract Global institutions are increasingly calling for an agroecological transition of our food systems to promote sustainable farmer livelihoods, safeguard agrobiodiversity and foster socio‐ecological resilience to a changing climate. Yet adoption remains limited, and there is a paucity of research examining how local conditions enable and ...
Gabriela Marie Garcia, Quetzalcóatl Orozco‐Ramírez, Ximena de la Mora Bakjejian, Reyna Domínguez Yescas, Emilio Hernández Martínez, Patricia Balvanera   +5 more
wiley   +1 more source

La medición del riesgo en eventos extremos. Una revisión metodológica en contexto

Lecturas de Economía, 2012
En este documento se exploran varias metodologías para el cálculo del Valor en Riesgo (VeR) utilizadas actualmente en la regulación internacional y la administración de portafolios. Se exponen las limitantes de las mismas y las posibles consecuencias de
Jorge Uribe, Inés Ulloa
doaj   +2 more sources

Geographic risks to functional groups of mammals and birds from habitat loss in Mexico

Conservation Biology, Volume 40, Issue 3, June 2026.
Abstract There is a need to quantify the impact of habitat loss due to anthropogenic factors on different aspects of biodiversity, such as functional trait diversity represented by functional groups (FGs). We developed a metric to assess the weighted risk of loss of habitat for 33 FGs of mammals and 36 FGs of birds in Mexico based on potential ...
Fernando Mayani‐Parás, Francisco Botello, Claudia E. Moreno, Griselda Escalona‐Segura, Víctor Sánchez‐Cordero   +4 more
wiley   +1 more source

Valor en riesgo de carteras de inversión

, 2019
Resumen:El trabajo de investigación busca determinar el valor en riesgo de tres carteras de inversión mediante métodos de optimización como maximización de rentabilidad, minimización de riesgo y maximización del ratio de Sharpe, se considera diferentes ...
Jaramillo Alverca, Cristian Adrian
core   +3 more sources

Valor en riesgo usando valores extremos y cópulas

, 2022
In this document, the Value at Risk is estimated for a portfolio made up of the IPyC of Mexico and the S&P500 of the United States, using the theory of extreme values ​​and the copula approach. The application of the extreme value theory is justified in that the estimate of the value at risk is associated with the quantile of the lower tail of the ...
openaire   +1 more source