Results 81 to 90 of about 272,138 (290)

Financial correlations at ultra-high frequency: theoretical models and empirical estimation

, 2011
A detailed analysis of correlation between stock returns at high frequency is compared with simple models of random walks. We focus in particular on the dependence of correlations on time scales - the so-called Epps effect.
A. Lo, A. Lo, A. Zebedee, B. Tóth, B. Tóth, B. Tóth, B. Tóth, C. Borghesi, G. Bonanno, I. Mastromatteo, J. Muthuswamy, J.E. Griffin, L. Kullmann, L. Zhang, M. Marsili, M. Potters, M. Scholes, M.C. Munnix, M.C. Munnix, P. Malliavin, P. Zoi, R. Renò, S. Pafka, T. Hayashi, T.W. Epps   +24 more
core   +2 more sources

Aquaporin‐4 in Narcolepsy Type 1: Investigation of Perivascular Fluid Movement in Sleep Disorders

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Narcolepsy type 1 (NT1) is caused by the loss of hypocretin‐1 leading to excessive daytime sleepiness and cataplexy. Additionally, disrupted nighttime sleep has become an increasingly recognized feature of NT1. As the glymphatic fluid movement has been linked to sleep architecture, we investigated cerebrospinal fluid (CSF) Aquaporin‐4 (AQP4 ...
Jonas Ranke, Petra Steinacker, Steffen Halbgebauer, Patrick Oeckl, Geert Mayer, Markus Otto   +5 more
wiley   +1 more source

An efficient algorithm for computing attractors of synchronous and asynchronous Boolean networks. [PDF]

PLoS ONE, 2013
Biological networks, such as genetic regulatory networks, often contain positive and negative feedback loops that settle down to dynamically stable patterns.
Desheng Zheng, Guowu Yang, Xiaoyu Li, Zhicai Wang, Feng Liu, Lei He   +5 more
doaj   +1 more source

Error function attack of chaos synchronization based encryption schemes [PDF]

Chaos: An Interdisciplinary Journal of Nonlinear Science, 2004
Different chaos synchronization based encryption schemes are reviewed and compared from the practical point of view. As an efficient cryptanalysis tool for chaos encryption, a proposal based on the error function attack is presented systematically and used to evaluate system security.
Wang, X., Zhan, M., Lai, C.-H., Gang, H.
openaire   +3 more sources

Associations of Sleep and Shift Work With Osteoarthritis Risk

Arthritis Care &Research, EarlyView.
Objective Daily rhythms may be critical for maintaining homeostasis of joint tissues. We aimed to investigate the relationships among circadian clock disruption, sleep, and osteoarthritis (OA) risk in humans. Methods In the UK Biobank, a prospective 500,000–person cohort, we evaluated associations among sleep duration, sleeplessness/insomnia, and shift
Elizabeth L. Yanik, Abigail Bridgeman, Erik D. Herzog, Vy Pham, Bradley A. Evanoff, Farshid Guilak   +5 more
wiley   +1 more source

A Procedure for Splitting Processes and its Application to Coordination

, 2012
We present a procedure for splitting processes in a process algebra with multi-actions (a subset of the specification language mCRL2). This splitting procedure cuts a process into two processes along a set of actions A: roughly, one of these processes ...
António Ravara, Arbab, Baier, Beohar, Bergstra, Clarke, Clarke, Clemens Fischer and Wil Janssen, Dave Clarke, Groote, Jongmans, Jongmans, José Proença, Kokash, Kokash, Kokash, Kokash, Milner, Natallia Kokash, Proença, Proença, Sung-Shik T.Q. Jongmans, Udding   +22 more
core   +2 more sources

Effect of Implementing a Dashboard With or Without a Best Practice Alert on HLA‐B*58:01 Testing Rates Among Allopurinol Users at VA Medical Centers

Arthritis Care &Research, EarlyView.
Objective The American College of Rheumatology recommends HLA‐B*58:01 allele testing before the initiation of allopurinol, specifically among Asian and African American/Black patients, due to their increased risk for severe hypersensitivity reactions. However, testing rates remain low at many health care facilities.
Abimbola Fadairo‐Azinge, Gabriela Schmajuk, Sristi Sharma, Colleen P. Flanagan, Sara Faghihi‐Kashani, Ning Zhang, Mary A. Whooley   +6 more
wiley   +1 more source

Transient Accumulation of Jasmonic Acid During the Synchronized Hypersensitive Cell Death in Tobacco mosaic virus-Infected Tobacco Leaves

Molecular Plant-Microbe Interactions, 2001
Jasmonic acid (JA) transiently accumulated during temperature-dependent synchronous necrotic lesion formation in Tobacco mosaic virus-infected tobacco leaves. The accumulation of JA was preceded by activation of a tobacco mitogen-activated protein kinase,
Shigemi Seo, Hideharu Seto, Hiromoto Yamakawa, Yuko Ohashi   +3 more
doaj   +1 more source

Does Long‐Term Lower Extremity Strength Training in Adults With Knee Osteoarthritis and Varus Alignment Reduce Knee Joint Loading During Gait?

Arthritis Care &Research, EarlyView.
Objective We examined whether 18 months of strength training in individuals with knee varus alignment and medial tibiofemoral osteoarthritis (OA) reduced knee joint loads during walking compared to an attention control group. Methods This study was a secondary analysis of a randomized clinical trial that compared the effects of strength training to a ...
Stephen P. Messier, Matthew N. Vigliotti, Paige E. Rice, Brian Pietrosimone, Shannon L. Mihalko, Edward H. Ip, Richard F. Loeser, David J. Hunter, Ali Guermazi, Ryan Hill, Santiago Saldana, Kim L. Bennell, Paul DeVita   +12 more
wiley   +1 more source

Equilibrium rotation of semiliquid exoplanets and satellites

, 2015
A wide range of exoplanet and exomoon models are characterized by a finite average rigidity and a viscosity much lower than the typical values for terrestrials. Such semiliquid bodies may or may not have rigid crusts with permanent figures.
Makarov, Valeri V.
core   +1 more source