Results 41 to 50 of about 2,811,176 (383)

A hierarchy of voids [PDF]

open access: yesProceedings of the International Astronomical Union, 2004
We present a model for the distribution of void sizes and its evolution within the context of hierarchical scenarios of gravitational structure formation. For a proper description of the hierarchical buildup of the system of voids in the matter distribution, not only the "void-in-void" problem should be taken into account, but also that of the "void-in-
van de Weygaert, Rien   +2 more
openaire   +2 more sources

Hierarchies and entrepreneurship [PDF]

open access: yesEuropean Economic Review, 2016
We establish a correlation between the hierarchical structure of a firm and the likelihood of business creation among its former employees, using a sample of 16 million observations of Swedish workers and a novel proxy for hierarchies based on occupation data.
Tåg, Joacim   +2 more
openaire   +1 more source

Enabling long-distance hydrogen spillover in nonreducible metal-organic frameworks for catalytic reaction

open access: yesNature Communications
Hydrogen spillover is an extraordinary effect in heterogeneous catalysis and hydrogen storage, which refers to the surface migration of metal particle-activated hydrogen atoms over the solid supports.
Xiao-Jue Bai, Caoyu Yang, Zhiyong Tang
doaj   +1 more source

Why emerging leaders should focus on being good postdoctoral supervisors

open access: yesFEBS Letters, EarlyView.
Swamped with work and suddenly a new student is waiting at your doorstep for supervision? Great—this is your chance! In this article, we share tips on how postdocs can strengthen their leadership skills while supervising students. This image has been created using DALL·E. Many postdocs work as leaders later in their career.
Hannah Rostalski   +5 more
wiley   +1 more source

Breaking the hierarchy of galaxy formation [PDF]

open access: yes, 2005
Recent observations of the distant Universe suggest that much of the stellar mass of bright galaxies was already in place at z > 1. This presents a challenge for models of galaxy formation because massive halos are assembled late in the hierarchical ...
R. Bower   +10 more
semanticscholar   +1 more source

Hematopoietic (stem) cells—The elixir of life?

open access: yesFEBS Letters, EarlyView.
The aging of HSCs (hematopoietic stem cells) and the blood system leads to the decline of other organs. Rejuvenating aged HSCs improves the function of the blood system, slowing the aging of the heart, kidney, brain, and liver, and the occurrence of age‐related diseases.
Emilie L. Cerezo   +4 more
wiley   +1 more source

Invariants in problems of pattern recognition and control of states of complex objects

open access: yesВестник Дагестанского государственного технического университета: Технические науки, 2022
Objective. The aim of the study is to build emulators of the main sensors of a small spacecraft (SC).Method. The quality of recovery is determined by the standard deviation (RMS) of the data from the standards.
V. B. Melekhin   +2 more
doaj   +1 more source

The constrained dispersionless mKP hierarchy and the dispersionless mKP hierarchy with self-consistent sources

open access: yes, 2005
We first show that the quasiclassical limit of the squared eigenfunction symmetry constraint of the Sato operator for the mKP hierarchy leads to a reduction of the Sato function for the dispersionless mKP hierarchy.
Aoyama   +37 more
core   +1 more source

On the strictness of the quantifier structure hierarchy in first-order logic [PDF]

open access: yes, 2014
We study a natural hierarchy in first-order logic, namely the quantifier structure hierarchy, which gives a systematic classification of first-order formulas based on structural quantifier resource.
He, Yuguo
core   +1 more source

Atypical functional connectome hierarchy in autism

open access: yesNature Communications, 2018
One paradox of autism is the co-occurrence of deficits in sensory and higher-order socio-cognitive processing. Here, we examined whether these phenotypical patterns may relate to an overarching system-level imbalance—specifically a disruption in ...
Seokjun Hong   +10 more
semanticscholar   +1 more source

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