Results 171 to 180 of about 141,036 (295)

An Economic Analysis of Difficulty Adjustment Algorithms in Proof‐of‐Work Blockchain Systems

International Economic Review, EarlyView.
ABSTRACT We study the stability of cryptocurrency systems through difficulty adjustment. Bitcoin's difficulty adjustment algorithm (DAA) exhibits instability when the reward elasticity of the hash rate is high, implying that a sharp price reduction could disrupt the current Bitcoin system.
Shunya Noda, Kyohei Okumura, Yoshinori Hashimoto   +2 more
wiley   +1 more source

Specification Tests for Jump‐Diffusion Models Based on the Characteristic Function

International Statistical Review, EarlyView.
Summary Goodness‐of‐fit tests are suggested for several popular jump‐diffusion processes. The suggested test statistics utilise the marginal characteristic function of the model and its L2‐type discrepancy from an empirical counterpart. Model parameters are estimated either by minimising the aforementioned L2‐type discrepancy or by maximum likelihood ...
Gerrit Lodewicus Grobler, Denis Belomestny, Simos George Meintanis, Emanuele Taufer   +3 more
wiley   +1 more source

A Bertrand model with Brownian motion and behavioral errors. [PDF]

Sci Rep
Gao B, Gao X, He S.
europepmc   +1 more source

Optimal Pricing of Public Franchises With Imperfectly Correlated Demand Shocks

Journal of Economics &Management Strategy, EarlyView.
ABSTRACT In a dynamic adverse selection setting with private information about stochastic consumer preferences, we study the pricing of franchise rights when the awarding government body has to balance between revenue collection and consumer welfare. In this environment, we show that optimal pricing requires an appropriate combination of fixed and time‐
Marco Buso, Cesare Dosi, Michele Moretto
wiley   +1 more source

Building a predator: macroevolutionary patterns in the skull of abelisaurid dinosaurs. [PDF]

Proc Biol Sci
Pereyra EES, Ezcurra MD, Paschetta C, Méndez AH.   +3 more
europepmc   +1 more source

Do temporary changes in earnings caused by mean reversion affect firms’ refinancing decisions?

Journal of Financial Research, EarlyView.
Abstract We develop a dynamic two‐stage trade‐off model with refinancing when earnings are mean reverting. Our model predicts a negative relation between profitability and leverage at refinancing due to conservative debt increases. With multiple rounds of refinancing, the leverage–profitability relation may turn positive when firms have substantial ...
Elettra Agliardi, Marios Charalambides, Md Shahedur R. Chowdhury, Nicos Koussis   +3 more
wiley   +1 more source

Plasmonic Brownian Ratchets for Directed Transport of Analytes. [PDF]

Nano Lett
Palma do Carmo M, Mack D, Roth DJ, Zhao M, Devis AM, Rodríguez-Fortuño FJ, Maier SA, Huidobro PA, Rakovich A.   +8 more
europepmc   +1 more source

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

Journal 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, Gwendal Perrichon, Lionel Hautier, Nicolas Rinder, Romain Amiot, Irena Raselli, Jérôme Adrien, Joël Lachambre, Vincent Fernandez, Jeremy E. Martin   +9 more
wiley   +1 more source

Numerical investigation of MHD stratified flow over an inclined cylinder with Brownian motion, thermophoresis and waste discharge concentration effects. [PDF]

Sci Rep
Rafique K, Mahmood Z, Abd-Elmonem A, Suoliman NAA, Popa IL, Kumar A.   +5 more
europepmc   +1 more source

Deposit Insurance Pricing of Excess Reinsurance Based on Geometric Fractional Brownian Motion

, 2015
海梅 刘
openalex   +1 more source