Results 71 to 80 of about 1,466,211 (327)

Hopf Bifurcation and Chaos in Tabu Learning Neuron Models [PDF]

, 2004
In this paper, we consider the nonlinear dynamical behaviors of some tabu leaning neuron models. We first consider a tabu learning single neuron model. By choosing the memory decay rate as a bifurcation parameter, we prove that Hopf bifurcation occurs in
CHUNGUANG LI, Gopalsamy K., GUANRONG CHEN, Hassard B. D., JUEBANG YU, Kurten K. E., XIAOFENG LIAO   +6 more
core   +2 more sources

The MSA Atrophy Index (MSA‐AI): An Imaging Marker for Diagnosis and Clinical Progression in Multiple System Atrophy

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective Reliable biomarkers are essential for tracking disease progression and advancing treatments for multiple system atrophy (MSA). In this study, we propose the MSA Atrophy Index (MSA‐AI), a novel composite volumetric measure to distinguish MSA from related disorders and monitor disease progression. Methods Seventeen participants with an
Paula Trujillo, Kilian Hett, Amy Cooper, Amy E. Brown, Jessica Iregui, Manus J. Donahue, M. Erik Landman, Italo Biaggioni, Margaret Bradbury, Cynthia Wong, David Stamler, Daniel O. Claassen   +11 more
wiley   +1 more source

Dynamical stability and chaos in artificial neural network trajectories along training

Frontiers in Complex Systems
The process of training an artificial neural network involves iteratively adapting its parameters so as to minimize the error of the network’s prediction, when confronted with a learning task.
Kaloyan Danovski, Miguel C. Soriano, Lucas Lacasa   +2 more
doaj   +1 more source

Investigation of a physical model-based machine-learning force field for BaZrO3 perovskite

Journal of Aeronautical Materials, 2023
Interatomic potential is a key component of large-scale atomic simulation of materials. For scientific problems in complex environments such as high temperature，high pressure and irradiation，the interactions between atoms are often very complex.
ZHAO Liang, NIU Hongwei, JING Yuhang
doaj   +1 more source

Exploring if Longitudinal Changes on PET Imaging Can Serve as a Biomarker for Stiff Person Syndrome Spectrum Disorders

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective To identify metabolic patterns in the brain and musculoskeletal system of stiff person syndrome spectrum disorders (SPSD) patients over time using PET imaging and evaluate the impact of immune therapy on metabolic activity as a surrogate for treatment response.
Munther M. Queisi, Samantha N. Roman, Mohammad S. Sadaghiani, Lilja B. Solnes, Scott D. Newsome   +4 more
wiley   +1 more source

Cytokine, Chemokine, and Neurofilament Light Chain Signatures in LGI1 Autoimmune Encephalitis

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objectives To investigate the value of cytokine, chemokine, and neurofilament light chain (NfL) concentrations in predicting relapse risk, chronic epilepsy, and functional impairment in LGI1 autoimmune encephalitis (AE). Methods Cytokines/chemokines (IL‐1‐beta, IL‐2, IL‐4, IL‐5, IL‐6, IL‐8/CXCL8, IL‐10, IL‐12p70, IL‐13, IL‐17A, GM‐CSF, TNF ...
Albert Aboseif, Georgios Mangioris, Binxia Yang, Vanessa K. Pazdernik, Jeffrey W. Britton, Divyanshu Dubey, Eoin P. Flanagan, Sarosh R. Irani, Gregory S. Day, Charles L. Howe, A. Sebastian López‐Chiriboga, Andrew McKeon, John R. Mills, Yahel Segal, Michel Toledano, Ivana Vodopivec, Sean J. Pittock, Anastasia Zekeridou   +17 more
wiley   +1 more source

Polynomial Iterative Learning Control (ILC) Tracking Control Design for Uncertain Repetitive Continuous-Time Linear Systems Applied to an Active Suspension of a Car Seat

Mathematics
This paper addresses the issue of polynomial iterative learning tracking control (Poly-ILC) for continuous-time linear systems (LTI) operating repetitively.
Selma Ben Attia, Sultan Alzahrani, Saad Alhuwaimel, Salah Salhi, Houssem Eddine Ouerfelli   +4 more
doaj   +1 more source

An Intelligent Algorithm for USVs Collision Avoidance Based on Deep Reinforcement Learning Approach with Navigation Characteristics

Journal of Marine Science and Engineering, 2023
Many achievements toward unmanned surface vehicles have been made using artificial intelligence theory to assist the decisions of the navigator. In particular, there has been rapid development in autonomous collision avoidance techniques that employ the ...
Zhe Sun, Yunsheng Fan, Guofeng Wang
doaj   +1 more source

Compositional descriptor-based recommender system accelerating the materials discovery

, 2017
Structures and properties of many inorganic compounds have been collected historically. However, it only covers a very small portion of possible inorganic crystals, which implies the presence of numerous currently unknown compounds.
Hayashi, Hiroyuki, Seko, Atsuto, Tanaka, Isao   +2 more
core   +1 more source

Association of Elevated Serum S100A8/A9 Levels and Cognitive Impairment in Patients With Systemic Lupus Erythematosus

Arthritis Care &Research, EarlyView.
Objective Cognitive impairment (CI) is common in patients with systemic lupus erythematosus (SLE). Despite its prevalence, the immune mechanisms are not well understood. We previously reported elevated serum levels of S100A8/A9 and matrix metalloproteinase 9 (MMP‐9) in patients with SLE and CI.
Carolina Muñoz‐Grajales, Michelle L. Barraclough, Juan P. Diaz‐Martinez, Jiandong Su, Kathleen Bingham, Mahta Kakvan, Roberta Pozzi Kretzmann, Maria Carmela Tartaglia, Lesley Ruttan, May Y. Choi, Simone Appenzeller, Sherief Marzouk, Dennisse Bonilla, Patricia Katz, Dorcas Beaton, Robin Green, Dafna D. Gladman, Joan Wither, Zahi Touma   +18 more
wiley   +1 more source