Results 91 to 100 of about 3,807,054 (238)

The epidemic volatility index, a novel early warning tool for identifying new waves in an epidemic. [PDF]

Sci Rep, 2021
Kostoulas P, Meletis E, Pateras K, Eusebi P, Kostoulas T, Furuya-Kanamori L, Speybroeck N, Denwood M, Doi SAR, Althaus CL, Kirkeby C, Rohani P, Dhand NK, Peñalvo JL, Thabane L, BenMiled S, Sharifi H, Walter SD.   +17 more
europepmc   +1 more source

An Empirical Analysis of the Taiwan Institutional Trading Volume Volatility Spillover on Stock Market Index Return [PDF]

This paper provides interesting empirical evidence on the relation between the volatility impact effect of the Taiwan institutional trading volume and the stock market index by using the MEGARCH model. We found a significant autoregressive coefficient of
Ching-Chun Wei
core  

Tuning the Optoelectronic Properties of Wide Bandgap Perovskites: Data‐Driven Insights from Combinatorial Synthesis and High‐Throughput Experimentation

Advanced Functional Materials, EarlyView.
Combinatorial vapor deposition enables independent tuning of Cs/Pb and Br/Cl in wide‐bandgap perovskites. Automated multimodal mapping of 500+ compositions reveals a high‐energy optical transition that correlates with enhanced photoluminescence, defining a practical Cs/Pb window.
Alexander Wieczorek, Sergey Tsarev, Nathan Rodkey, Oleksandr Pshyk, Stefanie Frick, Maksym V. Kovalenko, Sebastian Siol   +6 more
wiley   +1 more source

Modeling the Volatility Of the BET-FI Index [PDF]

Revista Română de Statistică, 2013
In this paper we conducted an analysis of stock market risk in Romania, namely on the basis of BET-FI sectoral index (Bucharest Exchange Trading Investment Funds) volatility, developed by the Bucharest Stock Exchange (BSE).
Dan Ion Gherguţ, Bogdan Oancea, Claudia Căpăţînă   +2 more
doaj  

Modelling the heterogeneous relationship between the crude oil implied volatility index and African stocks in the coronavirus pandemic. [PDF]

Resour Policy, 2021
Boateng E, Adam AM, Junior PO.
europepmc   +1 more source

Modeling and predicting the CBOE market volatility index [PDF]

This paper performs a thorough statistical examination of the time-series properties of the market volatility index (VIX) from the Chicago Board Options Exchange (CBOE).
Marcelo Cunha Medeiros, Marcelo Fernandes, MArcelo Scharth   +2 more
core  

Noise‐Limited Bit Precision in Ferroelectric Synaptic Transistors for High‐Resolution Neuromorphic Computing

Advanced Functional Materials, EarlyView.
Low‐frequency noise spectroscopy defines the resolvable conductance states of synaptic FeFETs by coupling read‐current fluctuation with usable dynamic range. The resulting noise‐limited bit precision establishes a universal, device‐agnostic reliability metric beyond the memory window, enabling quantitative benchmarking and rational design of high ...
Jaehong Park, Yeonseop Shin, Changhyeon Han, Sangwoo Kim, Eunchan Park, Youngchan Cho, Jaehong Min, Hyunjun Ahn, Jaekyoung Park, Cheol‐Woong Yang, Jangsaeng Kim, Daewoong Kwon, Wonjun Shin   +12 more
wiley   +1 more source

Realised volatility estimators [PDF]

, 2014
Includes bibliographical references.This dissertation is an investigation into realised volatility (RV) estimators. Here, RV is defined as the sum-of-squared-returns (SSR) and is a proxy for integrated volatility (IV), which is unobservable.
Königkrämer, Sören
core   +1 more source

COVID-19 fear and volatility index movements: empirical insights from ASEAN stock markets. [PDF]

Environ Sci Pollut Res Int, 2021
Sadiq M, Hsu CC, Zhang Y, Chien F.
europepmc   +1 more source

Light‐Induced Field‐Tunneling Synapses in Solution‐Processed Van Der Waals Heterostructures for Scalable, Retina‐Inspired Optical Sensing

Advanced Functional Materials, EarlyView.
A scalable, solution‐processed WSe2/ZrO2‐x van der Waals heterostructure realizes a light‐induced field‐tunneling synapse (LIFTS) that activates exclusively under bright illumination, emulating the photopic adaptation of the human retina at the device level.
Kijeong Nam, Jihyun Kim, Soobeen Ji, In Soo Kim, Sejin Kim, Eungseon Yeon, Do Kyung Hwang, Iva Plutnarová, Zdeněk Sofer, Sang Min Won, Joohoon Kang   +10 more
wiley   +1 more source