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Article
Publication date: 1 April 2003

T. Lalinsky´, Sˇ. Haščík, Ž. Mozolová, E. Burian, M. Krnáč, M. Tomáška, J. Škriniarová, M. Drzˇík, I. Kosticˇ and L. Matay

A new micromachining technology of mechanically fixed and thermally insulated cantilevers, bridges and islands was developed to be used for design of GaAs heterostructure based…

Abstract

A new micromachining technology of mechanically fixed and thermally insulated cantilevers, bridges and islands was developed to be used for design of GaAs heterostructure based microelectromechanical systems (MEMS) devices. Based on the micromachining technology, two different MEMS devices were designed and analyzed. The first one was micromechanical thermal converter (MTC) and the second one was a micromechanical coplanar waveguide (MCPW). The basic electro‐thermal as well as microwave properties of the MEMS devices designed are investigated. The results obtained are also supported by simulation. The advantages of the fixed micromechanical structures in the field of design of new MEMS devices are discussed.

Details

Microelectronics International, vol. 20 no. 1
Type: Research Article
ISSN: 1356-5362

Keywords

Book part
Publication date: 29 March 2024

Stefano Salata

Abstract

Details

Urban Resilience: Lessons on Urban Environmental Planning from Turkey
Type: Book
ISBN: 978-1-83549-617-6

Article
Publication date: 11 October 2018

Julie A. Sisson

Research has shown that one of the reasons lean transformations fail is inadequate lean knowledge of supervisors. The purpose of this paper is to discuss the development of a lean…

Abstract

Purpose

Research has shown that one of the reasons lean transformations fail is inadequate lean knowledge of supervisors. The purpose of this paper is to discuss the development of a lean training program for front-line manufacturing supervisors to provide them with the knowledge needed to engage their teams in daily continuous improvement.

Design/methodology/approach

A literature review was conducted on best practices in training design for positive transfer. Action research using qualitative methodologies was used to develop and pilot a new lean leadership training program for supervisors at one site within a case study company. The pilot was evaluated and continuously improved for future waves of training, consistent with action research, lean philosophies and training best practices.

Findings

Employee engagement has dramatically increased since the training class began and the number of lean improvements implemented in Operations at the case study company has increased 160 per cent. Manufacturing lead-time has also been reduced by more than 30 per cent. Because of the positive results from the training, it has been expanded at the pilot site and spread to other sites within the case study company.

Research limitations/implications

As with any case study, one must take care when attempting to generalize findings beyond the case being examined. However, the pilot training program was successfully extended to several sites across different business segments of the case study company, increasing the likelihood that similar results may apply in other cases.

Originality/value

The case provides empirical evidence of the development of an effective training program to mature the lean capability of supervisors. Other companies seeking to provide training to develop front-line lean leaders can benefit from the lessons learned from the case study.

Details

International Journal of Lean Six Sigma, vol. 10 no. 1
Type: Research Article
ISSN: 2040-4166

Keywords

Article
Publication date: 3 September 2020

Weiwei Wu, Zhouzhou Wang, Shuang Ding, Aiping Song and Dejia Zhu

The effects of infiltrant-related factors during post-processing on mechanical performance are fully considered for three-dimensional printing (3DP) technology. The factors…

Abstract

Purpose

The effects of infiltrant-related factors during post-processing on mechanical performance are fully considered for three-dimensional printing (3DP) technology. The factors contain infiltrant type, infiltrating means, infiltrating frequency and time interval of infiltrating.

Design/methodology/approach

A series of printing experiments are conducted and the parts are processed with different conditions by considering the above mentioned four parameters. Then the mechanical performances of the parts are tested from both macroscopic and microscopic papers. In the macroscopic view, the compressive strength of each printed part is measured by the materials testing machine – Instron 3367. In the microscopic view, scanning electron microscope and energy dispersion spectrum are used to obtain microstructure images and element content results. The pore size distributions of the parts are measured further to illustrate that if the particles are bound tightly by infiltrant. Then, partial least square (PLS) is used to conduct the analysis of the influencing factors, which can solve the small-sample problem well. The regression analysis and the influencing degree of each factor are explored further.

Findings

The experimental results show that commercial infiltrant has an outstanding performance than other super glues. The infiltrating action will own higher compressive strength than the brushing action. The higher infiltrating frequency and inconsistent infiltrating time interval will contribute to better mechanical performance. The PLS analysis shows that the most important factor is the infiltrating method. When compare the fitted value with the actual value, it is clear that when the compressive strength is higher, the fitting error will be smaller.

Practical implications

The research will have extensive applicability and practical significance for powder-based additive manufacturing.

Originality/value

The impact of the infiltrating-related post-processing on the performance of 3DP technology is easy to be ignored, which is fully taken into consideration in this paper. Both macroscopic and microscopic methods are conducted to explore, which can better explain the mechanical performance of the parts. Furthermore, as a small-sample method, PLS is used for influencing factors analysis. The variable importance in the projection index can explain the influencing degree of each parameter.

Details

Rapid Prototyping Journal, vol. 26 no. 9
Type: Research Article
ISSN: 1355-2546

Keywords

Article
Publication date: 9 May 2023

Marek Hreczka, Roman Kolano, Aleksandra Kolano-Burian, Wojciech Burlikowski and Janusz Hetmańczyk

The purpose of this paper is to verify results related to losses in the core of a brushless DC prototype motor, obtained using its computer FE models, by experimental tests on…

Abstract

Purpose

The purpose of this paper is to verify results related to losses in the core of a brushless DC prototype motor, obtained using its computer FE models, by experimental tests on manufactured machines. The paper focuses on the comparison of losses in the core of a machine with a classical stator core made of an iron–silicon material (Fe–Si) and a new one made of a modern METGLAS material.

Design/methodology/approach

Computer models of the prototype motors were created using FEM. The designed machines were manufactured, and experimental tests were performed. To achieve high frequencies in rotating magnetic fields, motors with a stator to rotor pole ratio of 9/12 were built. Twin rotor approach was applied, as two identical rotors were built along the two geometrically identical stators made of different core materials.

Findings

Experimental studies have shown the superiority of the METGLAS material over the classical Fe–Si material. Material parameters were measured directly on the prepared cores as library data used in the simulation may be incorrect due to technological processes during core production, which was also verified. Problems related to twin rotor approach have been identified. Solution to the problem has been suggested. Necessity of 3D FEM modelling was identified.

Originality/value

The main source of originality is that METGLAS material used in the prototype machines was developed and manufactured by the authors themselves. Original approach to core parameter evaluation based on simplified methodology has been suggested. Another original part is a simplified methodology applied to loss measurement during no-load test.

Details

COMPEL - The international journal for computation and mathematics in electrical and electronic engineering , vol. 42 no. 4
Type: Research Article
ISSN: 0332-1649

Keywords

Article
Publication date: 25 March 2024

Tamer M. Elsawy

This study aims to apply the appreciative inquiry approach (AI) to develop a tourism strategy for poverty alleviation in marginalised communities. The focus is to provide…

Abstract

Purpose

This study aims to apply the appreciative inquiry approach (AI) to develop a tourism strategy for poverty alleviation in marginalised communities. The focus is to provide practical insights for leveraging tourism to drive positive socio-economic change for the impoverished, using Rosetta, a port city in Egypt with cultural and historical significance, as a case study.

Design/methodology/approach

This qualitative applied study uses the four-D phases of AI and thematic analysis to strategise tourism development in Rosetta. Through interviews, focus groups and field visits, the study identifies tourism potential, stakeholder aspirations and actionable strategies for sustainable development. The approach prioritises a bottom-up, community-centric and stakeholder-involved process, aiming for inclusive and equitable growth.

Findings

The study revealed Rosetta’s underutilised tourism potential, emphasising heritage tourism. Although tourism offers some economic benefits, its impact on alleviating poverty in Rosetta remains limited. A holistic strategy for tourism development in Rosetta is proposed for economic growth and poverty reduction, focusing on sustainable management, local empowerment, enhanced marketing, improved infrastructure and diversified tourism offerings.

Originality/value

While AI is not new in qualitative studies, the novelty of this study lies in its application to tourism planning for poverty alleviation in a marginalised community like Rosetta, introducing a comprehensive tourism strategy with an original framework applicable to comparable destinations. The study’s significance is emphasised by providing actionable strategies for policymakers, valuable insights for practitioners and enriching the discourse and methodology on pro-poor tourism for academics, representing a step towards filling the gap between theoretical concepts and practical strategies.

Details

International Journal of Tourism Cities, vol. ahead-of-print no. ahead-of-print
Type: Research Article
ISSN: 2056-5607

Keywords

Book part
Publication date: 17 March 2020

Clara S. Hemshorn de Sánchez and Annika L. Meinecke

Across different research fields, it is increasingly acknowledged that gender is not a binary variable and goes beyond the male–female dichotomy. At the same time, gender is a…

Abstract

Across different research fields, it is increasingly acknowledged that gender is not a binary variable and goes beyond the male–female dichotomy. At the same time, gender is a prominent social cue that affects evaluations and interactions among individuals. Thus, gender can impact social processes on many levels in complex ways. Meetings provide arenas where key social processes unfold that are relevant to the organization. Understanding which role gender takes in this context is therefore central to organizations as well as meeting research. This chapter provides a critical review of research to date on social influence in meetings, specifically zooming in on the role of gender. The authors conducted a multi-step systematic literature review and identified 43 studies across a wide area of disciplines (e.g., psychology, communication, and management). The authors put special emphasis on the methodologies employed across this work since a comprehensive understanding of the applied methods is core for a synthesis of research results. Through the analysis, the authors pinpoint six variables – individual gender, sex role orientation, gender composition, gender salience, contextual factors such as task type and organizational settings, and the construction of gender as a social concept – that are directly related to gender and which represent factors that are critical for the role of gender in the meeting context. Thereby, this chapter aims to provide a roadmap for researchers and practitioners interested in the role of gender during workplace meetings. The authors conclude by highlighting methodological and managerial recommendations and suggest avenues for future research.

Details

Managing Meetings in Organizations
Type: Book
ISBN: 978-1-83867-227-0

Keywords

Article
Publication date: 13 May 2014

Martin Burian and Christof Arens

Since the registration of the first clean development mechanism (CDM) project in 2004, the CDM has seen a dynamic expansion: the CDM pipeline currently comprises 6,725 projects…

2200

Abstract

Purpose

Since the registration of the first clean development mechanism (CDM) project in 2004, the CDM has seen a dynamic expansion: the CDM pipeline currently comprises 6,725 projects generating 2.73 billion certified emission reductions (CERs) up to 2012. These CERs result in a substantial financial flow from Annex I to Non-Annex I countries. But CDM projects also result in investments in low carbon technologies, a substantial share of which is focused on the energy sector. The total installed capacity of all CDM projects amounts to 288,944 MW. However, the CDM is not widely taken up in Africa. This holds true for Africa's share in the CDM project pipeline (2.62 per cent), for Africa's share in CERs generated up to 2012 (3.58 per cent) and for the normalized CERs per capita, per country. Two hypothesizes are commonly discussed: first, the continent features low per capita emissions and low abatement potentials. Second, African countries may be hampered by weak institutional frameworks. This article reviews both hypotheses and presents new empirical data. The paper aims to discuss these issues.

Design/methodology/approach

Investigating the greenhouse gas (GHS) abatement potential of 16 energy-related sectors for 11 selected least developed countries in sub-Saharan Africa shows a total theoretical CDM potential of 128.6 million CERs per year. Analyzing investment indicators confirms that most countries are impeded by below average investment conditions.

Findings

It is concluded that Africa offers a considerable range of substantial abatement potentials. However, the weak institutional framework is limiting the uptake of the CDM in Africa. This is underpinned by an analysis which shows if a CDM sector has high investment cost, Africa will have a low share in the sector. If the sector has low investment needs per CER, Africa's share in the CDM sector will be bigger. Investment needs and Africa's share in the pipeline feature a negative correlation.

Research limitations/implications

Supporting CDM development in Africa should not be constraint to technical assistance. It will be crucial to develop an integrated financing approach, comprising the CDM as a co-financing mechanism, to overcome the institutional challenges.

Originality/value

Until today, there are few empirical studies that use concrete criteria and indicators to show why the CDM is underrepresented in Africa. The work presented here contributes to filling this gap.

Details

International Journal of Climate Change Strategies and Management, vol. 6 no. 2
Type: Research Article
ISSN: 1756-8692

Keywords

Book part
Publication date: 2 August 2021

Max Crumley-Effinger, Tavis D. Jules and Syed Shah

Increasing awareness around the world of the environmental impact of greenhouse gas (GHG) emissions resulting from human activities such as air travel warrants consideration of…

Abstract

Increasing awareness around the world of the environmental impact of greenhouse gas (GHG) emissions resulting from human activities such as air travel warrants consideration of the effects of research and activities within the field of Comparative and International Education (CIE). The authors hypothesize that consideration of CIE research’s environmental impact is seldom, if ever, discussed in the literature. To test this hypothesis, the authors conduct a content analysis of articles published in selected major CIE journals to analyze how researchers account for their environmental impact. In addition to presenting the findings of this analysis, the authors provide a selection of queries for examining one’s own practices as a CIE researcher in relation to environmental sustainability. The authors provide preliminary suggestions for ways to reduce GHG production and the environmental impact of continued CIE research and call for acknowledgement of these impacts in publications. Ultimately, the authors suggest that more needs be done to examine CIE scholars’ ecological impact in conducting research and use this chapter as a starting point for conversations in this vein.

Details

Annual Review of Comparative and International Education 2020
Type: Book
ISBN: 978-1-80071-907-1

Keywords

Abstract

Details

Grassroots Leadership and the Arts for Social Change
Type: Book
ISBN: 978-1-78635-687-1

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