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Article
Publication date: 6 September 2022

Agnieszka Chmielewska, Bartlomiej Adam Wysocki, Elżbieta Gadalińska, Eric MacDonald, Bogusława Adamczyk-Cieślak, David Dean and Wojciech Świeszkowski

The purpose of this paper is to investigate the effect of remelting each layer on the homogeneity of nickel-titanium (NiTi) parts fabricated from elemental nickel and titanium…

1920

Abstract

Purpose

The purpose of this paper is to investigate the effect of remelting each layer on the homogeneity of nickel-titanium (NiTi) parts fabricated from elemental nickel and titanium powders using laser powder bed fusion (LPBF). In addition, the influence of manufacturing parameters and different melting strategies, including multiple cycles of remelting, on printability and macro defects, such as pore and crack formation, have been investigated.

Design/methodology/approach

An LPBF process was used to manufacture NiTi alloy from elementally blended powders and was evaluated with the use of a remelting scanning strategy to improve the homogeneity of fabricated specimens. Furthermore, both single melt and up to two remeltings were used.

Findings

The results indicate that remelting can be beneficial for density improvement as well as chemical and phase composition homogenization. Backscattered electron mode in scanning electron microscope showed a reduction in the presence of unmixed Ni and Ti elemental powders in response to increasing the number of remelts. The microhardness values of NiTi parts for the different numbers of melts studied were similar and ranged from 487 to 495 HV. Nevertheless, it was observed that measurement error decreases as the number of remelts increases, suggesting an increase in chemical and phase composition homogeneity. However, X-ray diffraction analysis revealed the presence of multiple phases regardless of the number of melt runs.

Originality/value

For the first time, to the best of the authors’ knowledge, elementally blended NiTi powders were fabricated via LPBF using remelting scanning strategies.

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Article
Publication date: 31 May 2013

Barbara Chmielewska and Agnieszka Wróbel

The purpose of this paper is to show the beginnings and development of digitization processes in University of Warsaw Library by examining the digital library of e‐bUW.

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Abstract

Purpose

The purpose of this paper is to show the beginnings and development of digitization processes in University of Warsaw Library by examining the digital library of e‐bUW.

Design/methodology/approach

The main method is the comparison to other similar actions within the country of Poland. The subject scope of the paper also includes a description of methods of presenting digitized collections to patrons.

Findings

It turned out that fair visibility of catalogue records of digitized material is possible mainly because the Library of Warsaw University is a member of Digital Libraries Federation (Federacja Bibliotek Cyfrowych). Since 2007 the collection has been visited by over 5 million readers.

Originality/value

The original value of the paper is made by presenting efforts of one country on an international level to a broader audience with special attention to individual solutions.

Details

Library Management, vol. 34 no. 4/5
Type: Research Article
ISSN: 0143-5124

Keywords

Available. Open Access. Open Access
Article
Publication date: 3 February 2025

Agnieszka Bieńkowska, Sabina Kubiciel-Lodzińska, Jolanta Maj and Katarzyna Tworek

Amidst dynamic global changes, migrant workforce dynamics have become complex due to voluntary and forced migrations, coupled with talent competition. Paradoxically, many migrants…

110

Abstract

Purpose

Amidst dynamic global changes, migrant workforce dynamics have become complex due to voluntary and forced migrations, coupled with talent competition. Paradoxically, many migrants experience deskilling and brain waste in host countries. To optimize migrant skills for enhanced job performance in fluctuating organizational and environmental contexts, it is vital to overcome this challenge. This study aims to verify the employees’ dynamic capabilities (EDC) based job performance model among migrants, exploring how the moderating effect of a meaning of life influences the relationship between EDC and job performance, considering job-related attitudes.

Design/methodology/approach

We conducted empirical research based on a survey of 453 Ukrainian migrants currently residing in Poland.

Findings

The results indicate that EDC influences job performance through person-job fit, work motivation, and job satisfaction. Particularly, migrants with a positive meaning of life show stronger relationships between EDC and job performance.

Originality/value

The article’s originality lies in exploring the concept of EDC within the context of migrant workers, bridging a gap in understanding how these capabilities impact job performance, particularly regarding brain waste and deskilling. The study delves into how EDC could mitigate the mismatch between migrant workers’ qualifications and job placements, thereby enriching international human resources management strategies to foster inclusive workplaces and enhance migrant workforce success.

Details

Central European Management Journal, vol. ahead-of-print no. ahead-of-print
Type: Research Article
ISSN: 2658-0845

Keywords

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