Results 61 to 70 of about 2,506 (162)

Potential of organogel‐based colloidal hydrogels for new cosmetic formulations

open access: yesInternational Journal of Cosmetic Science, EarlyView.
Colloidal hydrogels are formed by combining anionic, cationic, or nonionic surfactants with two oils of cosmetic interest: sweet almond oil and phytosqualane. These systems are obtained through hot emulsification followed by cooling, which leads to the aggregation of gel‐like particles.
Andrea Gregorio Gomes   +5 more
wiley   +1 more source

Detección y visualización de módulos para la fauna de mariposas neotropicales a través de la teoría de grafos

open access: yesActualidades Biológicas, 2014
La teoría de grafos aporta herramientas metodológicas que permiten describir diferentes tipos de interacciones, y asimismo, describir sus propiedades emergentes, como la conformación de módulos.
Luis A González-Montaña
doaj  

Miners' Reward Elasticity and Stability of Competing Proof‐of‐Work Cryptocurrencies

open access: yesInternational Economic Review, EarlyView.
ABSTRACT Proof‐of‐Work cryptocurrencies employ miners to sustain the system through algorithmic reward adjustments. We develop a stochastic model of the multicurrency mining and identify conditions for stable transaction speeds. Bitcoin's algorithm requires hash supply elasticity <$<$1 for stability, while ASERT remains stable for any elasticity and ...
Kohei Kawaguchi   +2 more
wiley   +1 more source

Marchenko–Pastur Laws for Daniell Smoothed Periodograms

open access: yesJournal of Time Series Analysis, EarlyView.
ABSTRACT Given a sample X0,…,Xn−1$$ {X}_0,\dots, {X}_{n-1} $$ from a d$$ d $$‐dimensional stationary time series (Xt)t∈ℤ$$ {\left({X}_t\right)}_{t\in \mathbb{Z}} $$, the most commonly used estimator for the spectral density matrix F(θ)$$ F\left(\theta \right) $$ at a given frequency θ∈[0,2π)$$ \theta \in \left[0,2\pi \right) $$ is the Daniell smoothed ...
Ben Deitmar
wiley   +1 more source

Especificación de módulos con ejemplos y casos de prueba

open access: yesRevista Cubana de Ciencias Informáticas, 2012
Se plantea cómo aprovechar la formación del programador para que construya, por lo menos parcialmente, la especificación de sus módulos, incorporando en cada implementación datos de prueba que sean ejemplos de uso de cada rutina, con el fin de mejorar la
Adolfo Di Mare
doaj  

Measure‐valued processes for energy markets

open access: yesMathematical Finance, Volume 35, Issue 2, Page 520-566, April 2025.
Abstract We introduce a framework that allows to employ (non‐negative) measure‐valued processes for energy market modeling, in particular for electricity and gas futures. Interpreting the process' spatial structure as time to maturity, we show how the Heath–Jarrow–Morton approach can be translated to this framework, thus guaranteeing arbitrage free ...
Christa Cuchiero   +3 more
wiley   +1 more source

Aggregation and the Structure of Value

open access: yesNoûs, EarlyView.
ABSTRACT Roughly, the view I call “Additivism” sums up value across time and people. Given some standard assumptions, I show that Additivism follows from two principles. The first says that how lives align in time cannot, in itself, matter. The second says, roughly, that a world cannot be better unless it is better within some period or another.
Weng Kin San
wiley   +1 more source

El clima organizacional de la clínica estomatológica Fe Dora Beris, del municipio de Santiago de Cuba

open access: yesCorreo Científico Médico, 2018
Introducción: el clima organizacional, conocido como clima laboral, es el ambiente humano y  físico donde se desarrolla el trabajo. Para medir el clima interno de la institución médica Fe Dora Beris, se aplicó una encuesta a los trabajadores.
Isolina Sánchez Jacas   +2 more
doaj   +2 more sources

A modularidade da memória e o sistema nervoso

open access: yesPsicologia USP
A memória parece não ser uma entidade única, mas compreender conjuntos de habilidades mediadas por diferentes módulos do sistema nervoso. Não obstante a profunda divisão de tarefas e de processamentos, a cooperação entre os diferentes módulos proporciona
Gilberto Fernando Xavier
doaj  

Efeitos de procedimentos para maximizar o bem-estar e a competência parental em mulheres vitimizadas

open access: yesEstudos de Psicologia (Campinas)
Resumo O Projeto Parceria visa ensinar habilidades parentais a mulheres com histórico de violência pelo parceiro íntimo, incluindo dois módulos com manuais correspondentes: (I) um específico para analisar os efeitos da violência e seu enfrentamento, e ...
Paolla Magioni SANTINI   +1 more
doaj   +1 more source

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