Results 121 to 130 of about 5,860 (269)

Sunspots identification through mathematical morphology [PDF]

open access: yes
The implementation of automated methods for sunspot detection is essential to obtain better objectivity, efficiency, and accuracy in identifying sunspots and analysing their morphological properties.
Oliveira, O.   +4 more
core   +1 more source

Geopolitical Risk and Domestic Bank Deposits

open access: yesFinancial Management, EarlyView.
ABSTRACT We investigate the relationship between global geopolitical risk and bank deposit flows across a wide panel of European countries. Motivated by the pivotal role of deposit stability for financial intermediation and systemic resilience, we explore whether geopolitical shocks alter depositors’ portfolio choices.
Dimitris Anastasiou   +3 more
wiley   +1 more source

Differential Rotation of Sunspots During Flares [PDF]

open access: yes
The complex nature of sunspots presents a constant challenge in understanding their dynamics and how they interact with their surrounding environment. A new method to analyse sunspot rotations has been presented, by which the rotation of sunspots can be ...
Newman, Olivia, Pintér, Balázs
core   +1 more source

Rational Expectations Fools' Bubbles

open access: yesInternational Economic Review, EarlyView.
ABSTRACT We develop a rational, Walrasian model of speculative bubbles inspired by the Kindleberger–Minsky view, which describes bubbles as wave‐like market processes. Touched off by an initial shock, price booms are initially self‐reinforcing but become self‐destructive later when prices surpass fundamental value.
Luis Araujo, Antonio Doblas‐Madrid
wiley   +1 more source

Banking with Inside Money: An Efficiency Analysis

open access: yesJournal of Money, Credit and Banking, EarlyView.
Abstract We show that banks do not decentralize the first best in a nominal Diamond–Dybvig economy with inside money. Furthermore, state‐contingent deposit contracts do not expand the consumption possibility set to include the first best either. Central banks can improve welfare but only for savers and only with unconventional monetary policy. Finally,
DAVID RIVERO   +1 more
wiley   +1 more source

Size, not phylogeny, explains the morphology of the endosseous labyrinth in the crown clade Crocodylia

open access: yesJournal of Anatomy, Volume 246, Issue 4, Page 558-574, April 2025.
Here, we present the most complete dataset to date on the endosseous labyrinths of extant crocodylians. Using 3D geometric morphometrics, we show that allometry constitutes a major contributor of the shape variation of the crocodylian endosseous labyrinths and that the development of this structure is likely linked to the braincase conformation, in all
Yohan Pochat‐Cottilloux   +9 more
wiley   +1 more source

Imperfect Competition and Sunspots

open access: yes, 2006
This paper shows that imperfect competition can be a rich source of sunspots equilibria and coordination failures. This is demonstrated in a dynamic general equilibrium model that has no major distortions except imperfect competition.
Wang, Pengfei, Wen, Yi
core  

Retinopathy of Prematurity Is Associated With Reduced Thalamic Volume and Impaired Neurodevelopment. A Cohort Study

open access: yesJournal of Paediatrics and Child Health, EarlyView.
ABSTRACT Background Retinopathy of prematurity (ROP) is a neurovascular disorder that may affect not only the retina but also the brain structures involved in visual processing. The relationship between ROP severity and the volumetric development of these regions remains unclear.
Jose Uberos   +8 more
wiley   +1 more source

Detecting Periodicity of a General Stationary Time Series via AR(2)‐Model Fitting

open access: yesJournal of Time Series Analysis, EarlyView.
ABSTRACT Estimating the periodicity of a stationary time series via fitting a second‐order stationary autoregressive (AR(2)) model has been initiated by the seminal paper of Yule (1927). We investigate properties of this procedure when applied to general stationary processes possessing a spectral density with a dominant peak at some unknown frequency ...
Jens‐Peter Kreiss   +2 more
wiley   +1 more source

Imperfect competition and sunspots [PDF]

open access: yes
This paper shows that imperfect competition can be a rich source of sunspots equilibria and coordination failures. This is demonstrated in a dynamic general equilibrium model that has no major distortions except imperfect competition.
Yi Wen, Pengfei Wang
core  

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