Results 21 to 30 of about 10,799 (216)
ESTIMACIÓN ESTADÍSTICA BASADA EN UN DISEÑO MUESTRAL MULTIETÁPICO (ESTUDIO DE MYPES)
Tecnociencia, 2022 El siguiente artículo presenta en lenguaje formal-matemático la aplicación del diseño de muestreo multietápico con su respectivo estimador con la finalidad de construir la noción de estrategia de muestreo y recomendarla en un estudio con encuesta para ...
René Bracho
doaj
Flexoelectrically Induced Polar Topology in Twisted SrTiO3 Membranes
Advanced Materials, EarlyView.Twisted SrTiO3 bilayers host polar vortices of flexoelectric origin, revealed through combined experiment and theory. By reconstructing polarization from the toroidal moment of strain gradients, the work establishes a 3D chiral state with broken inversion and mirror symmetries.
Isabel Tenreiro +13 more
wiley +1 more source
Gapless Superconductivity From Extremely Dilute Magnetic Disorder in 2H‐NbSe2‐xSx
Advanced Materials, EarlyView.We demonstrate that 2H‐NbSe2‐xSx hosts gapless superconductivity at unexpectedly low magnetic impurity concentrations. Combining STM, Bogoliubovde Gennes simulations, DFT, and quasiparticle interference, we comprehensively study the development of gapless behavior and show that SeS substitution reshapes the band structure, enhances nesting, and drives ...
Jose Antonio Moreno +16 more
wiley +1 more source
Electrolyte–Framework Matching in High‐Voltage TEMPO‐COF Cathodes for Lithium Batteries
Advanced Science, EarlyView.TEMPO‐functionalized covalent organic frameworks are investigated as high‐voltage cathodes for lithium batteries. Screening five electrolyte anions identifies lithium difluoro(oxalato)borate (LiDFOB) as the optimal electrolyte, balancing capacity, rate capability, and cycling stability, while buckypaper electrodes achieve high mass loading (40 mg cm−2)
Marilyn Esclance DMello +5 more
wiley +1 more source
Visión Antataura, 2018 Utilizando un muestreo estratificado por conglomerado, se analizó la vinculación económica de las comunidades con la Reserva Forestal El Montuoso (RFM).
María E. Pedreschi M. +2 more
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Assessing Photovoltaic Recycling Capacities and Policy Gaps in the European Union
Advanced Energy and Sustainability Research, EarlyView.This study maps photovoltaic recycling capacity in the EU and key global regions, highlighting gaps between growing waste volumes and available infrastructure. It combines survey insights and policy analysis to identify recycling bottlenecks and offers recommendations to boost circularity in the solar sector.
Nieves Espinosa +3 more
wiley +1 more source
Modelo de emprendimiento universitario: Una propuesta para la Universidad de Panamá
Visión Antataura, 2018 .
María Esther Pedreschi
doaj
International Journal for Equity in Health, 2019 Background The objective of this research is to analyse trends in horizontal inequity in access to public health services by immigration condition in Spain throughout the period 2006–2017.
Jaime Pinilla +2 more
doaj +1 more source
Assessing the Impact of Promotions on Consumer Purchasing Behavior During Crises
Agribusiness, EarlyView.ABSTRACT Understanding how households modify their food expenditure decisions during times of crisis is essential because consumer purchasing behavior frequently changes during these times. This study looks at these behavioral shifts during the COVID‐19 pandemic, concentrating on how price sensitivity and response to sales promotions changed over the ...
Wafa Mehaba, José María Gil
wiley +1 more source
Ludopatía en la Región de Azuero
Visión Antataura, 2018 En nuestro país, muy pocos estudios abordan la problemática de la ludopatía o adicción a los juegos de azar. En esta investigación, se analizó el impacto socioeconómico de esta enfermedad en la región de Azuero, en una muestra representativa de 600 ...
Carlos Bellido
doaj