Results 51 to 60 of about 230,659 (313)

An Wavelet analysis of connectedness between volatility of the energy and other markets during the COVID-19 crisis

open access: yesEnergy Strategy Reviews, 2023
By applying novel partial wavelet coherency, this paper investigates the transmission mechanism of the volatility from the oil, gold, and silver sector to the energy sector in the time and frequency dimensions as well as the influence of the COVID-19 ...
Le Thanh Ha
doaj   +1 more source

A simple joint model for returns, volatility and volatility of volatility

open access: yesJournal of Econometrics, 2023
We propose a model that allows for conditional heteroskedasticity in the volatility of asset returns and incorporates current return information into the volatility nowcast and forecast. Our model can capture all stylised facts of asset returns even with Gaussian innovations and is simple to implement.
openaire   +2 more sources

Electrophysiological and Behavioral Responses of Holotrichia parallela to Volatiles from Peanut [PDF]

open access: gold, 2021
Mengmeng Zhang   +5 more
openalex   +1 more source

Understanding bio‐based polymers: A study of origins, properties, biodegradation and their impact on health and the environment

open access: yesFEBS Open Bio, EarlyView.
This review provides an overview of bio‐based polymer sources, their unique functional properties and their environmental impact, and addresses their role as sustainable alternatives. It discusses end‐of‐life options, including composting and anaerobic digestion for renewable energy.
Sabina Kolbl Repinc   +8 more
wiley   +1 more source

Equity Risk: Measuring Return Volatility Using Historical High-Frequency Data

open access: yesStudies in Business and Economics, 2019
Market Volatility has been investigated at great lengths, but the measure of historical volatility, referred to as the relative volatility, is inconsistent.
Alan Chow, Kyre Lahtinen
doaj   +1 more source

Volatile and semi-volatile components of jetsam ambergris

open access: yesNatural Product Research, 2019
Volatile and semi-volatile compounds account for the odors, long valued in the perfumery industry, of the natural product, ambergris. Here we demonstrate application of solid phase micro extraction (SPME) and gas chromatography-mass spectrometry (GC-MS) to headspace analysis of the volatiles and semi-volatiles of jetsam ambergris. The samples collected
Michael J. Wilde   +3 more
openaire   +3 more sources

A Scoping Review on Artificial Intelligence–Supported Interventions for Nonpharmacologic Management of Chronic Rheumatic Diseases

open access: yesArthritis Care &Research, EarlyView.
This review summarizes artificial intelligence (AI)‐supported nonpharmacological interventions for adults with chronic rheumatic diseases, detailing their components, purpose, and current evidence base. We searched Embase, PubMed, Cochrane, and Scopus databases for studies describing AI‐supported interventions for adults with chronic rheumatic diseases.
Nirali Shah   +5 more
wiley   +1 more source

Stock return, seasonality and asymmetric conditional volatility in steel & iron subsector

open access: yesMetalurgija, 2015
This paper presents the results obtained following the testing of five hypotheses regarding conditional return and volatility of the most listed European stocks in the steel & iron subsector.
V. Chirila, C. Chirila
doaj  

A general equilibrium approach to pricing volatility risk.

open access: yesPLoS ONE, 2019
This paper provides a general equilibrium approach to pricing volatility. Existing models (e.g., ARCH/GARCH, stochastic volatility) take a statistical approach to estimating volatility, volatility indices (e.g., CBOE VIX) use a weighted combination of ...
Jianlei Han   +4 more
doaj   +1 more source

Impact of Oil Price Shocks and Exchange Rate Volatility on Stock Market Behavior in Nigeria

open access: yesBinus Business Review, 2016
The impact of exchange rate and oil prices fluctuation on the stock market has been a subject of hot debate among researchers. This study examined the impact of both the exchange rate volatility and oil price volatility on stock market volatility in ...
Adedoyin I. Lawal   +2 more
doaj   +1 more source

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