Results 51 to 60 of about 87,020 (287)

Extremal maps of the universal hyperbolic solenoid [PDF]

open access: yes, 2006
We show that the set of points in the Teichmuller space of the universal hyperbolic solenoid which do not have a Teichmuller extremal representative is generic (that is, its complement is the set of the first kind in the sense of Baire). This is in sharp
Epstein, A., Markovic, V., Saric, D.
core   +1 more source

Extremal Horizons with Reduced Symmetry: Hyperscaling Violation, Stripes, and a Classification for the Homogeneous Case [PDF]

open access: yes, 2013
Classifying the zero-temperature ground states of quantum field theories with finite charge density is a very interesting problem. Via holography, this problem is mapped to the classification of extremal charged black brane geometries with anti-de Sitter
Iizuka, Norihiro   +6 more
core   +2 more sources

Revealing the structure of land plant photosystem II: the journey from negative‐stain EM to cryo‐EM

open access: yesFEBS Letters, EarlyView.
Advances in cryo‐EM have revealed the detailed structure of Photosystem II, a key protein complex driving photosynthesis. This review traces the journey from early low‐resolution images to high‐resolution models, highlighting how these discoveries deepen our understanding of light harvesting and energy conversion in plants.
Roman Kouřil
wiley   +1 more source

Gut microbiome and aging—A dynamic interplay of microbes, metabolites, and the immune system

open access: yesFEBS Letters, EarlyView.
Age‐dependent shifts in microbial communities engender shifts in microbial metabolite profiles. These in turn drive shifts in barrier surface permeability of the gut and brain and induce immune activation. When paired with preexisting age‐related chronic inflammation this increases the risk of neuroinflammation and neurodegenerative diseases.
Aaron Mehl, Eran Blacher
wiley   +1 more source

Large diffeomorphisms and accidental symmetry of the extremal horizon

open access: yesJournal of High Energy Physics, 2022
We uncover a symmetry of the linear Einstein equations near extremal horizons. Specifically, acting with a spherically symmetric linearized diffeomorphism on the perturbative solutions to the Einstein-Maxwell equations in the Bertotti-Robinson background,
Achilleas P. Porfyriadis   +1 more
doaj   +1 more source

Conifold Transitions in M-theory on Calabi-Yau Fourfolds with Background Fluxes [PDF]

open access: yes, 2012
We consider topology changing transitions for M-theory compactifications on Calabi-Yau fourfolds with background G-flux. The local geometry of the transition is generically a genus g curve of conifold singularities, which engineers a 3d gauge theory with
Intriligator, Kenneth   +4 more
core   +1 more source

Open-Set Specific Emitter Identification Based on Prototypical Networks and Extreme Value Theory

open access: yesApplied Sciences, 2023
Much research has focused on classification within a closed set of emitters, while emitters outside this closed set are misclassified. This paper proposes an open-set recognition model based on prototypical networks and extreme value theory to solve the problem of specific emitter identification in open-set scenes and further improve the recognition ...
Chunsheng Wang   +4 more
openaire   +2 more sources

Transcriptional network analysis of PTEN‐protein‐deficient prostate tumors reveals robust stromal reprogramming and signs of senescent paracrine communication

open access: yesMolecular Oncology, EarlyView.
Combining PTEN protein assessment and transcriptomic profiling of prostate tumors, we uncovered a network enriched in senescence and extracellular matrix (ECM) programs associated with PTEN loss and conserved in a mouse model. We show that PTEN‐deficient cells trigger paracrine remodeling of the surrounding stroma and this information could help ...
Ivana Rondon‐Lorefice   +16 more
wiley   +1 more source

New branches of non-supersymmetric attractors in N=2 supergravity

open access: yesPhysics Letters B, 2017
In this paper we analyse non-supersymmetric single centred extremal black hole solutions in N=2 supergravity theory coupled to n vector multiplets with purely cubic pre-potential in four dimensions.
Prasanta K. Tripathy
doaj   +1 more source

Game theory and extremal optimization for community detection in complex dynamic networks. [PDF]

open access: yesPLoS ONE, 2014
The detection of evolving communities in dynamic complex networks is a challenging problem that recently received attention from the research community.
Rodica Ioana Lung   +2 more
doaj   +1 more source

Home - About - Disclaimer - Privacy