Results 31 to 40 of about 1,125,542 (261)

Electrode and Microstructure Dependence of Oxygen Diffusion in Ferroelectric Hafnium Zirconium Oxide Thin Films

open access: yesAdvanced Functional Materials, EarlyView.
Significant nanoscale oxygen diffusion coefficient variations are measured in ferroelectric hafnium zirconium oxide films with grain boundaries and electrode interfaces exhibiting values 104 times larger than the grain cores. Overall coefficients are 10X larger for films prepared with metal nitride electrodes compared to refractory metals. New insights
Liron Shvilberg   +6 more
wiley   +1 more source

Industries Return and Volatility Spillover in Chinese Stock Market: An Early Warning Signal of Systemic Risk

open access: yesIEEE Access, 2019
This paper studies the intraday return and volatility spillovers of Chinese CSI 300 industry indices with high-frequency data over the period from May 2012 to June 2016. The dynamic correlation among the industries is calculated with VEC-DCC-GARCH model.
Feng He, Zhifeng Liu, Sicen Chen
doaj   +1 more source

Modeling Stock Market Volatility Using Univariate GARCH Models: Evidence from Bangladesh [PDF]

open access: yesInternational Journal of Business and Development Studies, 2016
This paper investigates the nature of volatility characteristics of stock returns in the Bangladesh stock markets employing daily all share price index return data of Dhaka Stock Exchange (DSE) and Chittagong Stock Exchange (CSE) from 02 January 1993 to ...
Md Abu Hasan, Md Abdul Wadud
doaj   +1 more source

Historical Foundation and Practical Guideline for Ferroelectric Switching Kinetic Studies

open access: yesAdvanced Functional Materials, EarlyView.
The P and U pulses in the conventional PUND measurements are not identical because of the interplay between switching current and the measurement circuit components. This circuit effect can lead to a shift in polarization transients and misinterpreted physics in the switching kinetics.
Yi Liang, Pat Kezer, John T. Heron
wiley   +1 more source

What Drives International Equity Correlations? Volatility or Market Direction? [PDF]

open access: yes, 2009
We consider impulse response functions to study the impact of both return and volatility on correlation between international equity markets. Using data on US (as the reference country), Canada, UK and France equity indices, empirical evidence shows that
Taamouti, Abderrahim   +2 more
core   +1 more source

Pengaruh Perubahan BI Rate Terhadap Market Return Dan Volatilitas Indeks LQ45

open access: yesJurnal Manajemen Teori dan Terapan, 2016
This study aimed to examine the effect of the announcement of the change in the BI rate to market return and volatility on the index LQ45 during the period March 2010 to February 2015 by using inflation and industrial production index as variable control.
Alan Fatih, Fitri Ismiyanti
doaj   +1 more source

Risk Evaluation of Banking Index with Volatility Estimation through Stochastic Volatility Model: A Semiparametric Bayesian Approach [PDF]

open access: yesتحقیقات مالی, 2017
Estimation of the return distribution has a crucial role in Risk measurement and since the precision of risk measures depends on the precision of the return distribution, truly estimation of return distribution has attracted a huge attention.
Rasoul Sajjad, Zahra Abtahi
doaj   +1 more source

Advances in Sustainable and Wearable Textile Based Soft Robotics

open access: yesAdvanced Functional Materials, EarlyView.
This Review examines advances in wearable textile‐based soft robotics, focusing on sustainable materials, integrated sensing, and scalable actuation. It discusses manufacturing and system integration across healthcare, assistive robotics, prosthetics, and human–machine interfaces, and highlights key challenges in circular design, including life‐cycle ...
Zahir Abbas   +6 more
wiley   +1 more source

The Distribution of Stock Return Volatility [PDF]

open access: yes
We exploit direct model-free measures of daily equity return volatility and correlation obtained from high-frequency intraday transaction prices on individual stocks in the Dow Jones Industrial Average over a five-year period to confirm, solidify and ...
Tim Bollerslev   +3 more
core   +2 more sources

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  

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