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1 – 10 of 36T. 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…
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.
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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…
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.
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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…
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.
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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…
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.
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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…
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.
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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…
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.
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On 24 January 2020, France informed WHO of three cases of novel coronavirus, all of whom had travelled from Wuhan, China. These three cases were the first confirmed cases…
Abstract
On 24 January 2020, France informed WHO of three cases of novel coronavirus, all of whom had travelled from Wuhan, China. These three cases were the first confirmed cases in Europe. By 13 March 2020, Europe had become the epicentre of the pandemic with more reported cases and deaths than the rest of the world combined, apart from the People’s Republic of China. Many European countries like Italy, France and Germany took drastic actions and subsequently announced a lockdown, while other countries like the UK, the Netherlands and Sweden were much more hesitant to introduce such far-reaching safety measures. This chapter provides a literature overview of how the variation in such measures in Europe has ultimately resulted in changes in daily activities and travel behaviour during the pandemic. It focusses on five main themes: (i) reduction in mobility and activities, (ii) spatial-temporal adjustments in out-of-home activities in which people still participated, (iii) modal adjustments especially among people who used to travel by public transport before the pandemic, (iv) new out-of-home activities including new outdoor activities and (v) digital adaptations as several out-of-home activities were replaced by digital activities, with special attention to the experience of teleworking.
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Nathan Daniel McWhirter and Tripp Shealy
This paper aims to introduce a case-based module teaching sustainable engineering, linking the Envision rating system with behavioral decision science. Three complete…
Abstract
Purpose
This paper aims to introduce a case-based module teaching sustainable engineering, linking the Envision rating system with behavioral decision science. Three complete modules are publicly available in a repository for any instructor to adapt, use and review.
Design/methodology/approach
A case study was written about the Tucannon River Wind Farm, a project-certified Gold by the Institute for Sustainable Infrastructure’s Envision™ rating system. The case was used as the basis for an in-class PowerPoint module to achieve student learning outcomes related to sustainability.
Findings
Before and after surveys showed significant (p < 0.05) learning increases. Word clouds show changes in student perceptions of sustainable design. Rubric scoring of writing assignments and concept maps yielded valuable insights and improvements and demonstrated the overall validity of the module approach.
Research limitations/implications
Modules lasting only one or two class days must be well-integrated into courses and curricula to promote greater learning value. Concept mapping may be a useful addition but involves a learning curve for both instructors and students.
Practical implications
By offering instructors access to a set of case-based modules, it becomes more practical for them to teach about sustainable infrastructure and decision-making.
Social implications
The module exemplifies a project owner and an engineering firm strongly committed to social and environmental sustainability. Envision’s Quality of Life and Leadership categories emphasize community well-being, involvement and collaboration.
Originality/value
This module offers a unique transdisciplinary focus meeting several needs in engineering education on sustainability, complex problems and decision-making.
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UnCover, a multidisciplinary article access database, was released in December 1988 to members of CARL (Colorado Alliance of Research Libraries). Since its release, access…
Abstract
UnCover, a multidisciplinary article access database, was released in December 1988 to members of CARL (Colorado Alliance of Research Libraries). Since its release, access to UnCover has been acquired by additional libraries through a gateway connection. UnCover is made possible by the cooperation of eight of the CARL libraries, which presently send their journals to CARL Systems Inc., where they are checked in and their table of contents entered into the UnCover database (See Table 1). The journals are returned to their libraries within 24 hours. The diversity of the universities' academic programs and the many interests of the public library clients have resulted in the creation of this large database containing journal citations on virtually every subject (See Table 2). As of June 1990, UnCover contains nearly 10,000 journal titles and over 900,000 article titles.