Results 71 to 80 of about 12,200 (306)

Neurotransmitter‐Defined Degeneration Patterns in Sporadic and C9orf72‐Associated Amyotrophic Lateral Sclerosis: Predilection to GABAergic, Serotonergic, Opioid, Glutamatergic, Endocannabinoid, and Microglial Systems—Implications for Therapy Development

open access: yesAnnals of Neurology, EarlyView.
Objective Amyotrophic lateral sclerosis (ALS) has a markedly distinctive clinical and neuroradiological signature, with the preferential involvement of specific brain networks and the apparent sparing of others. The molecular underpinnings of the strikingly selective anatomical vulnerability have not been fully elucidated to date despite the potential ...
Marlene Tahedl   +10 more
wiley   +1 more source

Homogeneous Geodesics in 3-dimensional Homogeneous Affine Manifolds [PDF]

open access: yes, 2008
summary:For studying homogeneous geodesics in Riemannian and pseudo-Riemannian geometry (on reductive homogeneous spaces) there is a simple algebraic formula which works, at least potentially, in every given case.
Kowalski, Oldřich   +7 more
core   +1 more source

Path integrated geodesics and distances

open access: yesEuropean Physical Journal C: Particles and Fields
In this paper, the quantum corrections to the kinematics of geometry, specifically geodesics, are presented. This is done by employing the path integral over the geodesics.
Nima Khosravi
doaj   +1 more source

Optimizing Strategies for Non‐Invasive Prospection of Settlements in the Intertidal Zone: A Case Study From the Centre of the Drowned Medieval Village of Tolsende (Scheldt Estuary, the Netherlands)

open access: yesArchaeological Prospection, EarlyView.
ABSTRACT Medieval and early modern drowned villages in the intertidal zone of the Scheldt estuary (the Netherlands) constitute intriguing yet largely understudied components of north‐western Europe's underwater cultural heritage. Despite their high archaeological potential as time capsules of past settlement landscapes, research has remained limited ...
Jan Trachet   +9 more
wiley   +1 more source

Connecting and Closed Geodesics of a Kropina Metric

open access: yesAdvanced Nonlinear Studies, 2021
We prove some results about existence of connecting and closed geodesics in a manifold endowed with a Kropina metric. These have applications to both null geodesics of spacetimes endowed with a null Killing vector field and Zermelo’s navigation problem ...
Caponio Erasmo   +3 more
doaj   +1 more source

Cortical Network Overconnectivity Relates to Sensory, Cognitive, and Social Dimensions in Young Children With Autism Spectrum Disorder

open access: yesAutism Research, EarlyView.
ABSTRACT The heterogeneity in both the neurobiological mechanisms and the phenotypic presentations of autism spectrum disorder (ASD) poses a major challenge to clinical and translational research. Alterations in functional connectivity (FC) have been associated with ASD, yet it remains unclear whether and how divergent brain network properties may ...
Borja Rodríguez‐Herreros   +16 more
wiley   +1 more source

Stable geodesics on a K3 surface [PDF]

open access: yes, 2019
This thesis studies stable, closed geodesics on a Ricci-flat Kummer K3 surface. The motivation for counting stable, closed geodesics is explained and put into the context of comparison geometry. Building on estimates due to R.
Lye, Jørgen Olsen
core   +1 more source

Monopoles and geodesics

open access: yesCommunications in Mathematical Physics, 1982
Using the holomorphic geometry of the space of straight lines in Euclidean 3-space, it is shown that every static monopole of chargek may be constructed canonically from an algebraic curve by means of the Atiyah-Ward Ansatz\(A_k \).
openaire   +4 more sources

From Centrality to Sustainability: How Connected Boards Shape Waste Management Outcomes

open access: yesBusiness Strategy and the Environment, EarlyView.
ABSTRACT The escalating climate crisis has elevated waste management from an operational concern to a critical issue of corporate governance. However, the role of board connectedness in shaping firms' waste practices remains largely unexplored. Drawing on resource dependency and social capital theories, this study examines how board network centrality ...
Irfan Haider Shakri   +2 more
wiley   +1 more source

Convergence of geodesics on triangulations [PDF]

open access: yes, 2009
International audienceIs it possible to approximate a geodesic on a smooth surface S by geodesics on nearby triangulations (i.e. on piecewise linear surfaces)?
Lieutier, André, Thibert, Boris
core   +1 more source

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