Results 71 to 80 of about 464,513 (260)

Railroad revolution: infrastructural decay and modernization in Argentina

open access: yesTapuya, 2019
How does modernity arrive and take hold? In this article, I examine efforts by the recent administration of Cristina Fernández de Kirchner to modernize railroad infrastructure in Argentina amidst ongoing decay.
Stephanie McCallum
doaj   +1 more source

Unraveling the Molecular Mechanisms of Glioma Recurrence: A Study Integrating Single‐Cell and Spatial Transcriptomics

open access: yesAnnals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective Glioma recurrence severely impacts patient prognosis, with current treatments showing limited efficacy. Traditional methods struggle to analyze recurrence mechanisms due to challenges in assessing tumor heterogeneity, spatial dynamics, and gene networks.
Lei Qiu   +10 more
wiley   +1 more source

Clustering Algorithm Reveals Dopamine‐Motor Mismatch in Cognitively Preserved Parkinson's Disease

open access: yesAnnals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective To explore the relationship between dopaminergic denervation and motor impairment in two de novo Parkinson's disease (PD) cohorts. Methods n = 249 PD patients from Parkinson's Progression Markers Initiative (PPMI) and n = 84 from an external clinical cohort.
Rachele Malito   +14 more
wiley   +1 more source

Coarse woody debris carbon stocks in natural spruce forests of Babia hora

open access: yesJournal of Forest Science, 2010
Although coarse woody debris (CWD) represents one of the major carbon pools in natural forest ecosystems, little information is available about its CWD carbon stocks.
K. Merganičová, J. Merganič
doaj   +1 more source

TBK1‐Associated Primary Lateral Sclerosis Followed by Right Temporal Variant Frontotemporal Dementia

open access: yesAnnals of Clinical and Translational Neurology, EarlyView.
ABSTRACT We report a 58‐year‐old woman with a novel splice‐site variant in the TANK‐binding kinase 1 (TBK1:c.993–2A>C p.Ala332TyrfsTer39) who sequentially developed primary lateral sclerosis (PLS) followed by right temporal variant frontotemporal dementia (rtvFTD). Neuroimaging demonstrated right anterior temporal atrophy before cognitive symptoms, and
Tomoyasu Matsubara   +18 more
wiley   +1 more source

A microbial biomass and respiration of soil, peat and decomposing plant litter in a raised mire

open access: yesPlant, Soil and Environment, 2015
We have compared microbial biomass and respiration rates in soils and decomposition of peat materials from the different components of a raised mire system.
S. Hall, D.W. Hopkins
doaj   +1 more source

A Q‐Learning Algorithm to Solve the Two‐Player Zero‐Sum Game Problem for Nonlinear Systems

open access: yesInternational Journal of Adaptive Control and Signal Processing, Volume 39, Issue 3, Page 566-581, March 2025.
A Q‐learning algorithm to solve the two‐player zero‐sum game problem for nonlinear systems. ABSTRACT This paper deals with the two‐player zero‐sum game problem, which is a bounded L2$$ {L}_2 $$‐gain robust control problem. Finding an analytical solution to the complex Hamilton‐Jacobi‐Issacs (HJI) equation is a challenging task.
Afreen Islam   +2 more
wiley   +1 more source

Evaluation of Oral and Dental Health among 12 Year-Old Students in Jolfa, East Azerbaijan [PDF]

open access: yesTaṣvīr-i salāmat, 2017
Background and Objectives: Twelve year-old is selected as the global indicator of age group to compare and monitor oral diseases at the international level.
Safooreh Esmaeilzadeh   +4 more
doaj  

Hopfield Neural Networks for Online Constrained Parameter Estimation With Time‐Varying Dynamics and Disturbances

open access: yesInternational Journal of Adaptive Control and Signal Processing, EarlyView.
This paper proposes two projector‐based Hopfield neural network (HNN) estimators for online, constrained parameter estimation under time‐varying data, additive disturbances, and slowly drifting physical parameters. The first is a constraint‐aware HNN that enforces linear equalities and inequalities (via slack neurons) and continuously tracks the ...
Miguel Pedro Silva
wiley   +1 more source

The decomposition of wood mass under conditions of climax spruce stands and related mycoflora in the Krkonoše Mountains

open access: yesJournal of Forest Science, 2002
The mycoflora was investigated under the conditions of climax spruce stands in the Krkonoše Mountains in relation to wood decomposition. The areas under observation have been affected more or less by air pollution since the eighties.
L. Janovský, A. Vágner, J. Apltauer
doaj   +1 more source

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