Results 51 to 60 of about 41,471 (212)

Labour Migration of Poles

open access: yesStudia Ekonomiczne i Regionalne, 2020
Subject and purpose of work: The contemporary labour market in Poland is characterised by a large scale of migration of people, caused by the desire to find a good job. This situation is facilitated by the possibility of free movement within the European
Czapski Grzegorz
doaj   +1 more source

Immigrant Entrepreneurship as a Field of Research [PDF]

open access: yesProblemy Zarządzania, 2018
The article presents immigrant entrepreneurship as a field of research. In the first section, the main concepts related to immigrant entrepreneurship are recounted.
Beata Glinka, Professor, PhD (habilitated)
doaj   +1 more source

Remesas y pobreza: una revisión teórica y empírica

open access: yesEconomía Teoría y Práctica, 2018
Este artículo hace una revisión de estudios que investigan el impacto que tienen las remesas sobre la pobreza en distintas partes del mundo, abordando diferentes concepciones teóricas y presentando evidencias empíricas relevantes que abonan a la ...
Jorge Mora-Rivera   +1 more
doaj   +1 more source

N-order bright and dark rogue waves in a Resonant erbium-doped Fibre system

open access: yes, 2012
The rogue waves in a resonant erbium-doped fibre system governed by a coupled system of the nonlinear Schr\"odinger equation and the Maxwell-Bloch equation (NLS-MB equations) are given explicitly by a Taylor series expansion about the breather solutions ...
He, Jingsong, Porseizan, K., Xu, Shuwei
core   +1 more source

Dietary protein to starch metabolizable energy ratios alter growth performance and gastrointestinal microbiota of calves

open access: yesFrontiers in Microbiology, 2023
The diet structure is very important for the growth and development of calves. This study aimed to investigate the effects of dietary protein-to-starch metabolizable energy ratios (DPSRs) on growth performance, blood index, and gastrointestinal ...
Xue Chen   +13 more
doaj   +1 more source

Trends in resource utilization for new‐onset psychosis hospitalizations at children's hospitals

open access: yesJournal of Hospital Medicine, EarlyView.
Abstract Background Children with new‐onset psychosis often require hospitalization for medical evaluation. Objectives The goal of this study was to assess variations in the management of children with new‐onset psychosis and characterize trends in resource utilization.
Ankita Gupta   +8 more
wiley   +1 more source

Analysis of Emigration in Europe Using the Spatial Dynamic Shift-Share Method

open access: yesFolia Oeconomica Stetinensia, 2015
The aim of the paper is to examine the pace of change in emigration levels in 24 selected European countries from 1999 to 2012, by age, country and the reference area. The spatial dynamic shift-share method is used in this research.
Antczak Elżbieta   +1 more
doaj   +1 more source

Bat algorithm based on kinetic adaptation and elite communication for engineering problems

open access: yesCAAI Transactions on Intelligence Technology, EarlyView.
Abstract The Bat algorithm, a metaheuristic optimization technique inspired by the foraging behaviour of bats, has been employed to tackle optimization problems. Known for its ease of implementation, parameter tunability, and strong global search capabilities, this algorithm finds application across diverse optimization problem domains. However, in the
Chong Yuan   +6 more
wiley   +1 more source

Optimal performance design of bat algorithm: An adaptive multi‐stage structure

open access: yesCAAI Transactions on Intelligence Technology, EarlyView.
Abstract The bat algorithm (BA) is a metaheuristic algorithm for global optimisation that simulates the echolocation behaviour of bats with varying pulse rates of emission and loudness, which can be used to find the globally optimal solutions for various optimisation problems. Knowing the recent criticises of the originality of equations, the principle
Helong Yu   +6 more
wiley   +1 more source

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