Search results for " norm"
showing 10 items of 887 documents
Human stem cells from single blastomeres reveal pathways of embryonic or trophoblast fate specification.
2015
Mechanisms of initial cell fate decisions differ among species. To gain insights into lineage allocation in humans, we derived ten human embryonic stem cell lines (designated UCSFB1-10) from single blastomeres of four 8-cell embryos and one 12-cell embryo from a single couple. Compared with numerous conventional lines from blastocysts, they had unique gene expression and DNA methylation patterns that were, in part, indicative of trophoblast competence. At a transcriptional level, UCSFB lines from different embryos were often more closely related than those from the same embryo. As predicted by the transcriptomic data, immunolocalization of EOMES, T brachyury, GDF15 and active β-catenin reve…
Essential norm estimates for composition operators on BMOA
2013
Abstract We provide two function-theoretic estimates for the essential norm of a composition operator C φ acting on the space BMOA; one in terms of the n-th power φ n of the symbol φ and one which involves the Nevanlinna counting function. We also show that if the symbol φ is univalent, then the essential norm of C φ is comparable to its essential norm on the Bloch space.
A double mean field equation related to a curvature prescription problem
2019
We study a double mean field-type PDE related to a prescribed curvature problem on compacts surfaces with boundary. We provide a general blow-up analysis, then a Moser-Trudinger inequality, which gives energy-minimizing solutions for some range of parameters. Finally, we provide existence of min-max solutions for a wider range of parameters, which is dense in the plane if $��$ is not simply connected.
Functional connectivity inference from fMRI data using multivariate information measures
2022
Abstract Shannon’s entropy or an extension of Shannon’s entropy can be used to quantify information transmission between or among variables. Mutual information is the pair-wise information that captures nonlinear relationships between variables. It is more robust than linear correlation methods. Beyond mutual information, two generalizations are defined for multivariate distributions: interaction information or co-information and total correlation or multi-mutual information. In comparison to mutual information, interaction information and total correlation are underutilized and poorly studied in applied neuroscience research. Quantifying information flow between brain regions is not explic…
Corresponding-pair procedure: a new approach to simulation of dichromatic color perception.
2004
The dichromatic color appearance of a chromatic stimulus T can be described if a stimulus S is found that verifies that a normal observer experiences the same sensation viewing S as a dichromat viewing T. If dichromatic and normal versions of the same color vision model are available, S can be computed by applying the inverse of the normal model to the descriptors of T obtained with the dichromatic model. We give analytical form to this algorithm, which we call the corresponding-pair procedure. The analytical form highlights the requisites that a color vision model must verify for this procedure to be used. To show the capabilities of the method, we apply the algorithm to different color vi…
Bēgļu izraidīšanas vai atgriešanas aizlieguma eksteritoriālais raksturs atklātajā jūrā kā starptautiskā paražu tiesību norma
2019
Darbā tiek aplūkota bēgļu izraidīšanas vai atgriešanas aizlieguma teritoriālā piemērojamība, izvērtējot tā darbību ārpus valstu robežām atklātajā jūrā. Saistībā ar bēgļu ierašanās pa jūru izpausmi mūdienās, īpaši nozīmīga ir bēgļu izraidīšanas vai atgriešanas aizlieguma attiecināmība uz masveida pieplūduma situācijām. Vienlaikus būtiski ir arī aplūkot vajāšanas satura paplašināšanos mūsdienās, izvērtējot gan tiesu praksi, gan tā mijiedarbību ar cilvēktiesībām. Tālāk tiek izvērtēta trešās drošās valsts koncepta nozīme bēgļu izraidīšanas vai atgriešanas piemērošanas robežu noteikšanā. Savukārt darba beigās autore analizē bēgļu izraidīšanas vai atgriešanas eksteritoriālo piemērojamību atklātaj…
CONFRONTO FRA CURVE NORMALI DI ORDINE "a" E "p".
2006
Les Actes privés grecs de l'Archivo Ducal de Medinaceli (Tolède). II. La Vallée du Tuccio (Calabre XIIe-XIIIe siècles)
2011
Secondo volume di una ricerca sulla documentazione greca medievale in Italia meridionale, il libro è lo studio diplomatico, storico e linguistico di un fondo d'archivio proveniente dal monastero greco del San Salvatore di Messina e ora conservato negli archivi del duca di Medinaceli a Toledo. Nell'introduzione si tratta della storia economica sociale e linguistica della Calabria post bizantina, dal regno Normanno fino al primo periodo Aragonese. Seguono l'edizione diplomatica analisi e commento di 53 atti privati, un indice dei nomi e dei luoghi, in greco e in francese, un indice delle parole notevoli in alcuni casi sconosciute ai lessici medievali e moderni. Un cd-rom con la riproduzione d…
Pratique juridique grecque et économie dans la Calabre post-byzantine (XIIe-XIIIe s.)
2014
Fonti recentemente edite conservate nell'Archivio Ducal de Medinaceli consentono di studiare sotto l'aspetto linguistico, sociale ed economico una zona della Calabria meridionale che nel regno normanno-svevo mantenne una popolazione di lingua rito e diritto privato bizantino. Recently published sources preserved in the Archivio Ducal de Medinaceli allow to study a linguistic, social and economic aspect of an area of southern Calabria that in the Norman-Swabian kingdom maintained a population of rite and Byzantine private language. À partir des nouvelles sources, disponibles suite à la publication des actes privés grecs de l’Archivo Ducal de Medinaceli, on étudie ici la société rurale de l…
May the force be with you: Transfer of healthy mitochondria from stem cells to stroke cells
2018
Stroke is a major cause of death and disability in the United States and around the world with limited therapeutic option. Here, we discuss the critical role of mitochondria in stem cell-mediated rescue of stroke brain by highlighting the concept that deleting the mitochondria from stem cells abolishes the cells’ regenerative potency. The application of innovative approaches entailing generation of mitochondria-voided stem cells as well as pharmacological inhibition of mitochondrial function may elucidate the mechanism underlying transfer of healthy mitochondria to ischemic cells, thereby providing key insights in the pathology and treatment of stroke and other brain disorders plagued with…