Results 61 to 70 of about 392,758 (334)

The role of global economic policy uncertainty in long-run volatilities and correlations of U.S. industry-level stock returns and crude oil.

PLoS ONE, 2018
We investigate how Global Economic Policy Uncertainty (GEPU) drives the long-run components of volatilities and correlations in crude oil and U.S. industry-level stock markets.
Honghai Yu, Libing Fang, Boyang Sun
doaj   +1 more source

Dependencies and systemic risk in the European insurance sector: New evidence based on Copula-DCC-GARCH model and selected clustering methods

Entrepreneurial Business and Economics Review, 2020
Objective: The objective of this article is to study the correlations between the most important European insurers and their participation in systemic risk in the insurance sector. We compare systemic risk in different market regimes.
Anna Denkowska, Stanisław Wanat
doaj   +1 more source

Chronic Hypoxia Disrupts Spermatogenesis Through ASXL2–EZH2–Mediated Microtubule Destabilization

Advanced Science, EarlyView.
This study reveals the mechanism by which chronic hypoxia impairs spermatogenesis via the ASXL2–EZH2 axis, hindering the transition of spermatids from round to elongated forms. Key findings reveal that under hypoxic conditions, downregulated ASXL2 expression reduces EZH2 binding to the CEP162 promoter, leading to decreased H3K27me3 modification and ...
Jun Yin, Mengjie Zhang, Wenying Liu, Wenlong Shen, Debao Li, Hongming Miao, Fang Deng, Gang Zhang, Yi Tian, Yi Zhang, Zhihu Zhao, Bing Ni   +11 more
wiley   +1 more source

Dynamics and co-movements between the COVID-19 outbreak and Polish stock market: A dynamic conditional correlation modeling and wavelet coherence analysis

International Journal of Management and Economics
This study makes a comparative assessment of the relation between four waves of the COVID-19 pandemic and the stock market in Poland. We utilize the Autoregressive Moving Average-Asymmetric Dynamic Conditional Correlation-Generalized Autoregressive ...
Dzik-Walczak Aneta, Gaweł Anna
doaj   +1 more source

Lactylation‐Driven YTHDC1 Alleviates MASLD by Suppressing PTPN22‐Mediated Dephosphorylation of NLRP3

Advanced Science, EarlyView.
In MASLD, YTHDC1 undergoes increased lactylation and ubiquitination, reducing its expression. AARS1 mediates lactylation at lysine 565, while disrupted binding to LDHA further promotes lactylation, suppressing YTHDC1. This downregulation enhances PTPN22 mRNA stability, leading to NLRP3 dephosphorylation and activation, which exacerbates inflammation ...
Feng Zhang, Linghua Zeng, Kunkun Zou, Keying Lin, Fangting Yao, Jinglun Song, Shumeng Zhang, Hanshu Feng, Zhichao Yang, Chunlei Wang, Hongtao Diao, Xue Kong, Tengfei Pan, Joonki Kim, Tianqi Duo, Linqiang Li, Yu Bian   +16 more
wiley   +1 more source

What They Did Not Tell You about Algebraic (Non-) Existence, Mathematical (IR-)Regularity, and (Non-) Asymptotic Properties of the Dynamic Conditional Correlation (DCC) Model

Journal of Risk and Financial Management, 2019
In order to hedge efficiently, persistently high negative covariances or, equivalently, correlations, between risky assets and the hedging instruments are intended to mitigate against financial risk and subsequent losses.
M. McAleer
semanticscholar   +1 more source

RETREG1‐Mediated Reticulophagy is Essential for Dendritic Cell Maturation and Function in Sepsis

Advanced Science, EarlyView.
Reticulophagy regulator 1 (RETREG1) maintains dendritic cell (DC) maturation and function in early sepsis. Mechanistically, activating transcription factor 6 (ATF6) acts as a direct transcription factor regulating RETREG1 expression in response to sepsis‐induced endoplasmic reticulum (ER) stress.
Ren‐Qi Yao, Chao Ren, Li‐Yu Zheng, Jing‐Yan Li, Wen‐Feng Wu, Yu‐Xuan Li, Li‐Xue Wang, Yu Duan, Lu Wang, Shuang‐Qing Liu, Peng‐Yi He, Peng‐Yue Zhao, Sen Tong, Zhi‐Xuan Li, Tuo Zhang, Meng‐Yao Wu, Shu‐Ting Wei, Ning Dong, Yao Wu, Hui Zhang, Xiao‐Mei Zhu, Zi‐Cheng Zhang, Guo‐Sheng Wu, Zhao‐Fan Xia, Xiao‐Hui Du, Hong‐Jun Kang, Zui Zou, Dao‐Lin Tang, Yong‐Ming Yao   +28 more
wiley   +1 more source

Semi-Parametric Modelling of Correlation Dynamics [PDF]

, 2005
In this paper we develop a new semi-parametric model for conditional correlations, which combines parametric univariate GARCH-type specifications for the individual conditional volatilities with nonparametric kernel regression for the conditional ...
Dijk, D.J.C. (Dick) van, Franses, Ph.H.B.F. (Philip Hans), Hafner, C.M. (Christian)   +2 more
core   +1 more source

Heuristically Adaptive Diffusion‐Model Evolutionary Strategy

Advanced Science, EarlyView.
Building on the mathematical equivalence between diffusion models and evolutionary algorithms, researchers demonstrate unprecedented control over evolutionary optimization through conditional diffusion. By training diffusion models to associate parameters with specific traits, they can guide evolution toward solutions exhibiting desired behaviors ...
Benedikt Hartl, Yanbo Zhang, Hananel Hazan, Michael Levin   +3 more
wiley   +1 more source

Characterizing the effects of age, puberty, and sex on variability in resting-state functional connectivity in late childhood and early adolescence

NeuroImage
Understanding the relative influences of age, pubertal development, and sex assigned at birth on brain development is a key priority of developmental neuroscience given the complex interplay of these factors in the onset of psychopathology.
Kelly A. Duffy, Andrea Wiglesworth, Donovan J. Roediger, Ellery Island, Bryon A. Mueller, Monica Luciana, Bonnie Klimes-Dougan, Kathryn R. Cullen, Mark B. Fiecas   +8 more
doaj   +1 more source