Results 161 to 170 of about 2,552,497 (284)

Exchange Rates and Sovereign Risk: A Nonlinear Approach Based on Local Gaussian Correlations

open access: yesInternational Journal of Finance &Economics, EarlyView.
ABSTRACT We empirically assess the interlinkages between sovereign risk, measured in terms of CDS spreads, and exchange rates for a sample of emerging markets. Our period of analysis includes episodes of severe stress, such as the Global Financial Crisis, the COVID‐19 pandemic, and the Ukrainian War.
Reinhold Heinlein   +2 more
wiley   +1 more source

Time‐Frequency Market‐State Learning for Execution‐Aware Directional Prediction: Evidence From the CSI 300 Index

open access: yesInternational Studies of Economics, EarlyView.
ABSTRACT Financial markets can be viewed as multiscale information systems in which short‐lived disturbances, recurrent temporal patterns, liquidity conditions, and execution constraints jointly shape index price movements. This study develops an empirical‐wavelet‐and‐Fourier time‐frequency (EFT) feature block integrated with a ConvTransformer ...
Yi Chen, Ranzhe Jing, Qiang Li
wiley   +1 more source

Studying the Safety of Trophectoderm Biopsy Using Visible Femtosecond Laser Pulses. [PDF]

open access: yesInt J Mol Sci
Sitnikov DS   +8 more
europepmc   +1 more source

Analysis of the effect of COVID‐19 on crude oil and agricultural commodity market relationships

open access: yesJournal of the Agricultural and Applied Economics Association, EarlyView.
Abstract This study examines the COVID‐19 pandemic's effect on relationships between crude oil and agricultural commodity markets. Using a Time‐Varying Parameter Vector Autoregressive model, we find strong volatility transmission, with Brent, WTI, corn, and soybean prices acting as net shock transmitters, while cotton and wheat are net receivers ...
Derick Adu   +2 more
wiley   +1 more source

Late Quaternary lake filling and drying in northern Australia's largest freshwater lake

open access: yesJournal of Quaternary Science, EarlyView.
ABSTRACT Lake Woods, Jurrkulu, is northern Australia's largest freshwater lake filled today in strong Indo–Australian summer monsoons (IASM) to maximum depths of ~5 m. On the western margins of the lake, two large arcuate ridges occur 20 to 40 m above the lake floor and inset within these are other mid‐elevation lake deposits, such as depositional ...
Tim J. Cohen   +14 more
wiley   +1 more source

Wolff-Parkinson-White syndrome in a patient with type I Chiari malformation: management of an unusual association. [PDF]

open access: yesAnn Med Surg (Lond)
Sagun G   +6 more
europepmc   +1 more source

Unbounded solutions to some systems of conservation laws-split delta shock waves

open access: yesMatematički vesnik, 2002
The following Riemann problem in two variables \(u_t+(f_1(u)v+f_2(u)))_x=0\), \(v_t+(g_1(u)v+g_2(u)))_x=0\), with step functions as initial data, is considered in the case when admissible elementary solution does not exist. The author finds delta shock wave solution introducing ``left and right deltas''. We refer to [Math. Models Methods Appl. Sci. 12,
openaire   +1 more source

Adaptive Spectral Analysis of Umbilical Venous Doppler Maternal–Fetal Power Ratio for Preeclampsia Risk Assessment

open access: yesJournal of Ultrasound in Medicine, EarlyView.
Objectives To develop and evaluate adaptive spectral analysis for deriving the maternal–fetal power ratio (MFPR) from umbilical venous Doppler recordings and to assess MFPR for subsequent preeclampsia (PEC) risk discrimination across recording durations.
Jingyi Zhu   +7 more
wiley   +1 more source

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