Results 61 to 70 of about 472,585 (293)

Enhancing Volatility Prediction: A Wavelet‐Based Hierarchical Forecast Reconciliation Approach

open access: yesJournal of Forecasting, EarlyView.
ABSTRACT Forecasting realized volatility (RV) has been widely studied, with numerous techniques developed to enhance predictive accuracy. Among these techniques, the use of RV decompositions based on intraday asset returns has been applied. However, the use of a frequency‐based decomposition, which provides unique insights into the dynamics of RV ...
Adam Clements, Ajith Perera
wiley   +1 more source

Varietal Performance of Sweet Potato (Ipomoea batatas l.) Planted in Between Mulberry (Morus alba l.) Trees

open access: yesJournal of Agroforestry and Environment
This study, conducted at the Sericulture Research Area of Don Mariano Marcos Memorial State University, evaluated the performance of ten sweet potato (Ipomoea batatas L.) varieties intercropped with mulberry (Morus alba) trees.
Mark Anthony A. Boisa   +2 more
doaj   +1 more source

The Hilton-Eckmann argument for cup-products

open access: yes, 2002
We present a simple extension of the classical Hilton-Eckmann argument classically used to prove that the endomorphism monoid of the unit object in a monoidal category is commutative.
Suarez-Alvarez, Mariano
core   +1 more source

Inflation as a White Hole explosion from a 5D vacuum [PDF]

open access: yes, 2014
Using a new kind of 5D Ricci-flat canonical metric, we obtain by a static foliation an effective 4D Schwarzschild-de Sitter hypersurface. We examine some particular initial conditions which could be responsible for the inflationary expansion of the early
Anabitarte, Mariano, Bellini, Mauricio
core   +3 more sources

Coherent Forecasting of Realized Volatility

open access: yesJournal of Forecasting, EarlyView.
ABSTRACT The QLIKE loss function is the stylized favorite of the literature on volatility forecasting when it comes to out‐of‐sample evaluation and the state of the art model for realized volatility (RV) forecasting is the HAR model, which minimizes the squared error loss for in‐sample estimation of the parameters.
Marius Puke, Karsten Schweikert
wiley   +1 more source

Transformation city: a pocket strategic intervention material for science 6

open access: yesDiversitas Journal
International science assessments consistently show the Philippines scoring low, highlighting a critical gap in the effectiveness of current learning materials.
Patricia Anne Orine   +5 more
doaj   +1 more source

Forecasting House Prices: The Role of Market Interconnectedness

open access: yesJournal of Forecasting, EarlyView.
ABSTRACT While the existing research uncovers interconnections between various housing markets, it largely ignores the question of whether such linkages can improve house price predictions. To address this issue, we proceed in two steps. First, we forecast disaggregated house price growth rates from Australia and China to determine whether ...
Zac Chen   +3 more
wiley   +1 more source

Dietary calcium intake in a cohort of elderly patients already in drug therapy for osteoporosis. Is it possible and how to modify the eating habits before calcium supplementation?

open access: yesItalian Journal of Medicine, 2015
Inadequate intake of calcium via the diet is very common in patients taking drugs for osteoporosis. We have evaluated 302 consecutive elderly patients (68.6 median age) attending our Rheumatological and Orthopedic Outpatient Clinics using a questionnaire
Ciro Manzo, Maria Teresa Russo
doaj   +1 more source

The Impact of Democratization and Globalization on Environmental Sustainability in Brazil

open access: yesGeological Journal, EarlyView.
Fossil fuel, economic globalisation, and economic growth drive environmental degradation while democratisation positively influences environmental quality. ABSTRACT Although Brazil still possesses significant ecological reserves, the surplus in its biocapacity has been rapidly declining in recent years.
Mustafa Naimoğlu   +3 more
wiley   +1 more source

Cyclic extensions are radical

open access: yes, 2016
We show that finite Galois extensions with cyclic Galois group are radical.Comment: 1 page.
Suárez-Álvarez, Mariano
core   +1 more source

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