Results 51 to 60 of about 824,647 (276)

On Hurst exponent estimation under heavy-tailed distributions

, 2012
In this paper, we show how the sampling properties of the Hurst exponent methods of estimation change with the presence of heavy tails. We run extensive Monte Carlo simulations to find out how rescaled range analysis (R/S), multifractal detrended ...
Alessio, Alvarez-Ramirez, Alvarez-Ramirez, Anis, Barkoulas, Beran, C, Carbone, Chambers, Cont, Couillard, Czarnecki, Di Matteo, Di Matteo, Di Matteo, Einstein, Ellis, Grech, Grech, Hurst, Jozef Barunik, Kantelhardt, Ladislav Kristoufek, Lillo, Mandelbrot, Mandelbrot, Matos, Menn, Mielniczuk, Peters, Samorodnitsky, Taqqu, Taqqu, Weron, Weron, Zolotarev   +35 more
core   +2 more sources

The critical exponents of the two-dimensional Ising spin glass revisited: Exact Ground State Calculations and Monte Carlo Simulations [PDF]

, 1996
The critical exponents for $T\to0$ of the two-dimensional Ising spin glass model with Gaussian couplings are determined with the help of exact ground states for system sizes up to $L=50$ and by a Monte Carlo study of a pseudo-ferromagnetic order ...
Barahona F, Barahona F, Bray A J, Bray A J, Bray A J, Bray A J, Cheung H F, De Simone C, De Simone C, Dekker C, For site-disorder instead of bond disorder there are indications of a finite temperature phase transition in 2d: Shirakura T, G Rinaldi, Grötschel M, H Rieger, Jünger M, Karp R M, Kawashima N, Kawashima N, Kisker J, L Santen, M Diehl, M Jünger, Rieger H, U Blasum   +23 more
core   +3 more sources

An upstream open reading frame regulates expression of the mitochondrial protein Slm35 and mitophagy flux

FEBS Letters, EarlyView.
This study reveals how the mitochondrial protein Slm35 is regulated in Saccharomyces cerevisiae. The authors identify stress‐responsive DNA elements and two upstream open reading frames (uORFs) in the 5′ untranslated region of SLM35. One uORF restricts translation, and its mutation increases Slm35 protein levels and mitophagy.
Hernán Romo‐Casanueva, Ariann E. Mendoza‐Martínez, P. Abril Medina‐Flores, Carlos Campero‐Basaldua, Alexander DeLuna, Soledad Funes   +5 more
wiley   +1 more source

Longevity and pleural mesothelioma: age-period-cohort analysis of incidence data from the Surveillance, Epidemiology, and End Results (SEER) Program, 1973–2013

BMC Research Notes, 2018
Objective This study investigates the hypothesis that an increasing fraction of incident pleural mesothelioma (PM) in the US population may be related to longevity, i.e., to expansion of the population over age 75 years with an age-related elevation in ...
Brent D. Kerger
doaj   +1 more source

Revision arthroplasty after unicompartimental knee arthroplasty

Journal of Orthopaedic Surgery and Research, 2021
Background Unicompartimental knee arthroplasty (UKA) is a promising and increasing application to treat unicompartimental knee osteoarthritis. However, revision arthroplasty numbers after UKA are unknown. Therefore, aim of this study was to determine the
Nike Walter, Johannes Weber, Maximilian Kerschbaum, Edmund Lau, Steven M. Kurtz, Volker Alt, Markus Rupp   +6 more
doaj   +1 more source

Structural instability impairs function of the UDP‐xylose synthase 1 Ile181Asn variant associated with short‐stature genetic syndrome in humans

FEBS Letters, EarlyView.
The Ile181Asn variant of human UDP‐xylose synthase (hUXS1), associated with a short‐stature genetic syndrome, has previously been reported as inactive. Our findings demonstrate that Ile181Asn‐hUXS1 retains catalytic activity similar to the wild‐type but exhibits reduced stability, a looser oligomeric state, and an increased tendency to precipitate ...
Tuo Li, Pedro A. Sánchez‐Murcia, Bernd Nidetzky   +2 more
wiley   +1 more source

Crumpling wires in two dimensions

, 2008
An energy-minimal simulation is proposed to study the patterns and mechanical properties of elastically crumpled wires in two dimensions. We varied the bending rigidity and stretching modulus to measure the energy allocation, size-mass exponent, and the ...
P. G. de Gennes, T. M. Hong, Y. C. Lin, Y. W. Lin   +3 more
core   +1 more source

The Oslo model, hyperuniformity, and the quenched Edwards-Wilkinson model [PDF]

, 2016
We present simulations of the 1-dimensional Oslo rice pile model in which the critical height at each site is randomly reset after each toppling. We use the fact that the stationary state of this sandpile model is hyperuniform to reach system of sizes $>
Dhar, Deepak, Grassberger, Peter, Mohanty, P. K.   +2 more
core   +2 more sources

The (Glg)ABCs of cyanobacteria: modelling of glycogen synthesis and functional divergence of glycogen synthases in Synechocystis sp. PCC 6803

FEBS Letters, EarlyView.
We reconstituted Synechocystis glycogen synthesis in vitro from purified enzymes and showed that two GlgA isoenzymes produce glycogen with different architectures: GlgA1 yields denser, highly branched glycogen, whereas GlgA2 synthesizes longer, less‐branched chains.
Kenric Lee, Dimitrios Bekiari, Sofia Doello, Karl Forchhammer   +3 more
wiley   +1 more source

100 % Fruit juice and measures of glucose control and insulin sensitivity: a systematic review and meta-analysis of randomised controlled trials

Journal of Nutritional Science, 2017
Studies on the effects of consuming 100 % fruit juice on measures of glycaemic control are conflicting. The purpose of the present study was to systematically review and quantitatively summarise results from randomised controlled trials (RCT) examining ...
Mary M. Murphy, Erin C. Barrett, Kara A. Bresnahan, Leila M. Barraj   +3 more
doaj   +1 more source