Results 21 to 30 of about 77,935 (198)

Are regional airports economic effectiveness-oriented? Evidence from Poland

open access: yesManagement, 2022
Striving for a satisfactory level of effectiveness, managers must take actions aimed at achieving the set objectives and at reacting flexibly to changes that take place in the environment.
Chwiłkowska-Kubala Anna, Cyfert Szymon
doaj   +1 more source

Business Models for Management and Entrepreneurs as a Tool for Survival and Success

open access: yesFoundations of Management, 2020
The need for survival in today's market drives an increase in the delivery of easy to use ‘just-in-time’ resources that respond to the often-dynamic workplace. Innovative business models are the resources that support entrepreneurs to be more competitive
Walaszczyk Ludmiła, Dingli Sandra
doaj   +1 more source

General Rotating Black Holes in String Theory: Greybody Factors and Event Horizons [PDF]

open access: yes, 1997
We derive the wave equation for a minimally coupled scalar field in the background of a general rotating five-dimensional black hole. It is written in a form that involves two types of thermodynamic variables, defined at the inner and outer event horizon,
A. Strominger   +32 more
core   +4 more sources

Analytical regularizing effect for the radial and spatially homogeneous Boltzmann equation [PDF]

open access: yes, 2012
In this paper, we consider a class of spatially homogeneous Boltzmann equation without angular cutoff.
Glangetas, Léo, Najeme, Mohamed
core   +4 more sources

Characterisation of L21-ordered Ni2TiAl precipitates in Fe Mn maraging steels [PDF]

open access: yesMaterials Characterization, 2016
The precipitates formed in a new series of Fesingle bondMn maraging steels when aged at 500 °C were identified as the L21-ordered Ni2TiAl phase. The precipitate formed a coherent-coplanar microstructure analogously to γ/γ' Ni-based superalloys and maintained a high number density and homogeneous dispersion within α′-martensite matrix even after aging ...
Feng Qian   +2 more
openaire   +2 more sources

Baryon asymmetry from leptogenesis with four zero neutrino Yukawa textures [PDF]

open access: yes, 2011
The generation of the right amount of baryon asymmetry $\eta$ of the Universe from supersymmetric leptogenesis is studied within the type-I seesaw framework with three heavy singlet Majorana neutrinos $N_i\,\,(i = 1,2,3)$ and their superpartners.
A. Abada   +28 more
core   +2 more sources

Molecular cloning and characterization of porcine ribosomal protein L21

open access: yesJournal of Veterinary Science, 2017
Ribosomal protein L21 (RPL21) is a structural component of the 60S subunit of the eukaryotic ribosome. This protein has an important role in protein synthesis and the occurrence of hereditary diseases. Pig is a common laboratory model, however, to the best of our knowledge, its RPL21 gene has not been cloned to date.
Sun, Wu-Sheng   +8 more
openaire   +2 more sources

Underwater Acoustic Channel Adaptive Estimation using l21 Norms

open access: yes, 2021
The problem of underwater acoustic (UWA) channel estimation is the non-uniform sparse representation that may increase the algorithm complexity and the required time. A mathematical framework utilizing l21 constraint with two-dimensional frequency domain is employed to enhance the channel estimation.
Aljanabi, Amer   +4 more
openaire   +2 more sources

The Role of Strategic Analysis in Shaping the Conditions for, and the Range of, Cooperation between Business Entities

open access: yesStudia Ekonomiczne i Regionalne, 2020
Subject and purpose of work: The subject matter of this paper includes selected examples of tools applied in systems analysis and strategic analysis in relation to the influence of their results on the forms of cooperation between business entities.
Dwojak Artur
doaj   +1 more source

Identification of a multi-resistant Enterobacter cloacae strain from diseased crayfish (Procambarus clarkii)

open access: yesAquaculture Reports, 2020
Diseases of crayfish in May often result in severe economic losses to crayfish farming in Qianjiang, China. Several bacterial pathogens have been identified that responsible to the diseases. In our present study, a virulent strain named L21 was separated
Jing Dong   +6 more
doaj   +1 more source

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