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Article
Publication date: 12 November 2018

Piotr Czyżewski, Marek Bieliński, Dariusz Sykutera, Marcin Jurek, Marcin Gronowski, Łukasz Ryl and Hubert Hoppe

The aim of this paper is presenting a new application of material obtained from the acrylonitrile butadiene styrene (ABS) recycling process from electronic equipment…

Abstract

Purpose

The aim of this paper is presenting a new application of material obtained from the acrylonitrile butadiene styrene (ABS) recycling process from electronic equipment housings. Elements of computer monitors were used to prepare re-granulate, which in turn was used to manufacture a filament for fused filament fabrication (FFF) additive manufacturing technology.

Design/methodology/approach

The geometry of test samples (i.e. dumbbell and bar) was obtained in accordance with the PN-EN standards. Samples made with the FFF technology were used to determine selected mechanical properties and to compare the results obtained with the properties of ABS re-granulate mould pieces made with the injection moulding technology. The GATE device manufactured by 3Novatica was used to make the prototypes with the FFF technology. Processing parameters were tested with the use of an Aflow extrusion plastometer manufactured by Zwick/Roell and other original testing facilities. Tests of mechanical properties were performed with a Z030 universal testing machine, a HIT 50P pendulum impact tester and a Z3106 hardness tester manufactured by Zwick/Roell.

Findings

The paper presents results of tests performed on a filament obtained from the ABS re-granulate and indicates characteristic processing properties of that material. The properties of the new secondary material were compared with the available original ABS materials that are commonly used in the additive technology of manufacturing geometrical objects. The study also presents selected results of tests of functional properties of ABS products made in the FFF technology.

Originality/value

The test results allowed authors to assess the possibility of a secondary application of used elements of electronic equipment housings in the FFF technology and to compare the strength properties of products obtained with similar products made with the standard injection moulding technology.

Details

Rapid Prototyping Journal, vol. 24 no. 9
Type: Research Article
ISSN: 1355-2546

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Article
Publication date: 14 April 2014

Anita Zehrer, Frieda Raich, Hubert Siller and Franz Tschiderer

Co-operation activities play a central role for the development of a tourism destination, and require a co-operative approach among numerous different actors to manage and…

Abstract

Purpose

Co-operation activities play a central role for the development of a tourism destination, and require a co-operative approach among numerous different actors to manage and market a tourism destination. This paper aims to describe the characteristics of leadership networks in tourism destinations and their impact on destination development.

Design/methodology/approach

The paper discusses network relationships of destination leaders, as in their collectivity, leaders shape and influence the destination's core services, strategic orientation and innovation capability. The research is based on the examination of relevant literature and a quantitative survey conducted in five selected tourism destinations in the Tirol, Austria.

Findings

The article discusses leadership networks in community-structured destinations, providing insights into its organizational structure and dynamic behaviour. Moreover, the paper illustrates the network characteristics and its influence on the development of the tourism destination. Thus, implications for destination management can be derived.

Originality/value

Discussions on leadership have usually been limited to firms and have not yet fully embraced the network and destination level. The originality of the paper is to provide insights in destination leadership and networking activities of leaders within destinations by means of a quantitative approach and thus adds to the growing body of literature on the functionalities of destination leadership networks, their structures and mechanisms.

Details

Tourism Review, vol. 69 no. 1
Type: Research Article
ISSN: 1660-5373

Keywords

Content available
Article
Publication date: 4 March 2014

Andrei Novac and Robert G. Bota

How does the human brain absorb information and turn it into skills of its own in psychotherapy? In an attempt to answer this question, the authors will review the…

Abstract

How does the human brain absorb information and turn it into skills of its own in psychotherapy? In an attempt to answer this question, the authors will review the intricacies of processing channels in psychotherapy and propose the term transprocessing (as in transduction and processing combined) for the underlying mechanisms. Through transprocessing the brain processes multimodal memories and creates reparative solutions in the course of psychotherapy. Transprocessing is proposed as a stage-sequenced mechanism of deconstruction of engrained patterns of response. Through psychotherapy, emotional-cognitive reintegration and its consolidation is accomplished. This process is mediated by cellular and neural plasticity changes.

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Article
Publication date: 1 September 2002

J. Muylle, P. Iványi and B.H.V. Topping

A new point creation scheme is presented for generating unstructured uniform size two‐dimensional triangular meshes using the Delaunay triangulation method. The scheme is…

Abstract

A new point creation scheme is presented for generating unstructured uniform size two‐dimensional triangular meshes using the Delaunay triangulation method. The scheme is shown to be suitable for generating meshes with strict limits on element size, such as that used in acoustic and electromagnetic simulations. In this approach for generating meshes of an exact element size a grid made of regular triangles is used to cover most of the mesh domain. An advanced boundary refinement and alignment procedure is presented for optimal connection of the regular grid with the boundary. A new refinement scheme treats the reconnection triangles, between the regular grid and boundary elements, until all are judged satisfactory. Element quality statistics and edge length distribution graphs compare the new scheme with other triangular mesh generation algorithms.

Details

Engineering Computations, vol. 19 no. 6
Type: Research Article
ISSN: 0264-4401

Keywords

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