Results 81 to 90 of about 779,578 (304)

Density Forecasting: A Survey [PDF]

A density forecast of the realization of a random variable at some future time is an estimate of the probability distribution of the possible future values of that variable.
Kenneth F. Wallis, Anthony Tay
core  

Further evidence of long-term thermospheric density change using a new method of satellite ballistic coefficient estimation

, 2011
Building on work from previous studies a strong case is presented for the existence of a long-term density decline in the thermosphere. Using a specially developed orbital propagator to predict satellite orbit evolution, combined with a new and accurate ...
Lewis, H.G., Arrun Saunders, Swinerd, G.G., Graham Swinerd, Saunders, A., Hugh Lewis   +5 more
core   +1 more source

Effect of terahertz irradiation on DNA damage repair in living cells

FEBS Open Bio, EarlyView.
We investigated the effect of terahertz (THz) wave irradiation on DNA double‐strand break (DSB) repair in living cells. We found that THz irradiation enhanced DSB repair at specific frequencies, whereas heat treatment inhibited it, indicating that this effect is nonthermal and frequency‐specific.
Yuya Ueno, Shota Yamazaki, Hiromichi Hoshina, Masahiko Harata   +3 more
wiley   +1 more source

Parametric vs. non-parametric methods for estimating option implied risk-neutral densities: the case of the exchange rate Mexican peso – US dollar. [PDF]

This research paper presents statistical comparisons between two methods that are commonly used to estimate option implied Risk-Neutral Densities (RND). These are: 1) mixture of lognormals (MXL); and, 2) volatility function technique (VFT). The former is
Israel Felipe Mora Cuevas, Guillermo Benavides Perales   +1 more
core  

Mutant NPM1 in Acute Myeloid Leukemia Initiation and Maintenance

Aging and Cancer, EarlyView.
NPM1 mutations drive acute myeloid leukemia by acting as neomorphic transcriptional regulators that cooperate with Menin–MLL and XPO1 to sustain HOX/MEIS1 expression and block differentiation. Targeting these mutant‐specific transcriptional dependencies provides a rational therapeutic strategy for NPM1‐mutated AML.
Yanan Jiang, Zhong Fan, Runmeng Liu, Xiaotian Zhang   +3 more
wiley   +1 more source

Interest rate expectations and uncertainty during ECB governing council days: evidence from intraday implied densities of 3-month Euribor [PDF]

This paper analyses changes in short-term interest rate expectations and uncertainty during ECB Governing Council days. For this purpose, it first extends the estimation of risk-neutral probability density functions up to tick frequency.
Vergote, Olivier, Puigvert Gutiérrez, Josep Maria   +1 more
core  

IV Thrombolysis Facilitates Interventional Reperfusion in Non‐Cardioembolic but Not Cardioembolic Stroke

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective Intravenous thrombolysis (IVT) before thrombectomy for ischemic stroke may alter clot structure and procedural performance. We investigated how IVT relates to thrombectomy metrics across stroke etiologies. Methods We performed a time‐to‐event analysis of consecutive patients with anterior circulation large vessel occlusion (acLVO ...
Annahita Sedghi, Daniel P. O. Kaiser, Martin Arndt, Norma J. Diel, Erik Simon, Witold H. Polanski, Volker Puetz, Hagen B. Huttner, Timo Siepmann   +8 more
wiley   +1 more source

Dynamic Semiparametric Factor Models in Risk Neutral Density Estimation [PDF]

Dimension reduction techniques for functional data analysis model and approximate smooth random functions by lower dimensional objects. In many applications the focus of interest lies not only in dimension reduction but also in the dynamic behaviour of ...
Volker Krätschmer, Enzo Giacomini, Wolfgang Härdle   +2 more
core  

On the Bayesian analysis of species sampling mixture models for density estimation [PDF]

, 2006
The mixture of normals model has been extensively applied to density estimation problems. This paper proposes an alternative parameterisation that naturally leads to new forms of prior distribution.
Griffin, Jim E.
core  

The state of mid-latitude thermosphere retrieved from ionosonde and Swarm satellite observations during geomagnetic storms in February 2022

Journal of Space Weather and Space Climate
This analysis of the impact of geomagnetic storms on the Thermosphere-Ionosphere system provides critical insights into the complex interplay between geomagnetic activity and the upper atmosphere dynamics. On February 3, 2022, SpaceX launched 49 Starlink
Perrone Loredana, Mikhailov Andrey
doaj   +1 more source