This paper presents a Monotonic Unbounded Schemes Transformer (MUST) approach to bound/monotonize (remove undershoots and overshoots) unbounded spatial differencing schemes…
Abstract
Purpose
This paper presents a Monotonic Unbounded Schemes Transformer (MUST) approach to bound/monotonize (remove undershoots and overshoots) unbounded spatial differencing schemes automatically, and naturally. Automatically means the approach (1) captures the critical cell Peclet number when an unbounded scheme starts to produce physically unrealistic solution automatically, and (2) removes the undershoots and overshoots as part of the formulation without requiring human interventions. Naturally implies, all the terms in the discretization equation of the unbounded spatial differencing scheme are retained.
Design/methodology/approach
The authors do not formulate new higher-order scheme. MUST transforms an unbounded higher-order scheme into a bounded higher-order scheme.
Findings
The solutions obtained with MUST are identical to those without MUST when the cell Peclet number is smaller than the critical cell Peclet number. For cell Peclet numbers larger than the critical cell Peclet numbers, MUST sets the nodal values to the limiter value which can be derived for the problem at-hand. The authors propose a way to derive the limiter value. The authors tested MUST on the central differencing scheme, the second-order upwind differencing scheme and the QUICK differencing scheme. In all cases tested, MUST is able to (1) capture the critical cell Peclet numbers; the exact locations when overshoots and undershoots occur, and (2) limit the nodal value to the value of the limiter values. These are achieved by retaining all the discretization terms of the respective differencing schemes naturally and accomplished automatically as part of the discretization process. The authors demonstrated MUST using one-dimensional problems. Results for a two-dimensional convection–diffusion problem are shown in Appendix to show generality of MUST.
Originality/value
The authors present an original approach to convert any unbounded scheme to bounded scheme while retaining all the terms in the original discretization equation.
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The aim of this article is to provide Dr Bailey Jackson's perspective on institutional and systemic barriers to full inclusion of diverse faculty in higher education through the…
Abstract
Purpose
The aim of this article is to provide Dr Bailey Jackson's perspective on institutional and systemic barriers to full inclusion of diverse faculty in higher education through the lens of the multicultural organizational development (MCOD) model. Dr Jackson is renowned for his work on social justice, diversity and multiculturalism.
Design/methodology/approach
This is a personal interview with Dr Bailey Jackson. This interview provides insight on institutional level change efforts through the MCOD framework, a perspective on why institutions get stuck on the way to becoming healthy multicultural institutions, and the effect on moving the needle on faculty diversity in institutions of higher education.
Findings
The institutional obstacles and barriers tend to be centered around misalignment with the mission, vision and core values, and how those are formulated to include diversity and inclusion. Faculty diversity is only one component in dealing with the health of any organization or the academy as a whole. If institutions focus on diversity faculty in an unhealthy system, they will encounter limitations on how much the institution will develop on the MCOD continuum. The health of the overall system is going to affect the approach to faculty diversity.
Practical implications
Dr Jackson provides insight on his work with the MCOD framework and specifically the overall health of the institution as critical to faculty diversity initiatives. Questions to help institutions begin to assess themselves and identify changes required to move toward Multicultural within the context of faculty diversity are provided.
Originality/value
Through a series of questions, insight from Dr Jackson on why institutions get stuck in moving the needle on faculty diversity through the lens of the MCOD framework is gained.
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Dan Noel, Sheri Stover and Mindy McNutt
The increase in ownership and use of mobile-based devices among college students creates unique opportunities for faculty to develop highly engaging learning environments. With…
Abstract
The increase in ownership and use of mobile-based devices among college students creates unique opportunities for faculty to develop highly engaging learning environments. With many educational institutions offering campus-wide Wi-Fi, students have the ability to use their mobile devices, including cell phones, tablets, and laptops for engaging with curriculum, specifically with leadership concepts. One method of engaging students is through the use of mobile-based polling, as an audience response system (ARS). Although most studies on the use of ARS in educational settings include traditional response system methods (e.g., clickers), emerging technologies have fueled interest in mobile-based polling. The purpose of this study was to examine the effects that mobile-based polling has among students of leadership when used as an audience response system. A survey regarding perceptions of mobile-based polling was administered to students enrolled in undergraduate leadership courses with the purpose of understanding its importance on various aspects of student engagement. Results regarding their polling experiences indicated that students became highly engaged on three levels— behaviorally, emotionally, and cognitively. Additionally, survey responses suggested that students viewed mobile-based polling as viable for purposes outside of the classroom. Suggestions for using mobile-based polling for learning leadership concepts are also presented. The authors of this study not only present mobile-based polling as an emerging technology with advantages over traditional clickers, but as a pedagogical approach for increasing student engagement and as a tool for enhancing leadership skills.
Lindsey Bezek and Kwan-Soo Lee
Although ceramic additive manufacturing (AM) could be used to fabricate complex, high-resolution parts for diverse, functional applications, one ongoing challenge is optimizing…
Abstract
Purpose
Although ceramic additive manufacturing (AM) could be used to fabricate complex, high-resolution parts for diverse, functional applications, one ongoing challenge is optimizing the post-process, particularly sintering, conditions to consistently produce geometrically accurate and mechanically robust parts. This study aims to investigate how sintering temperature affects feature resolution and flexural properties of silica-based parts formed by vat photopolymerization (VPP) AM.
Design/methodology/approach
Test artifacts were designed to evaluate features of different sizes, shapes and orientations, and three-point bend specimens printed in multiple orientations were used to evaluate mechanical properties. Sintering temperatures were varied between 1000°C and 1300°C.
Findings
Deviations from designed dimensions often increased with higher sintering temperatures and/or larger features. Higher sintering temperatures yielded parts with higher strength and lower strain at break. Many features exhibited defects, often dependent on geometry and sintering temperature, highlighting the need for further analysis of debinding and sintering parameters.
Originality/value
To the best of the authors’ knowledge, this is the first time test artifacts have been designed for ceramic VPP. This work also offers insights into the effect of sintering temperature and print orientation on flexural properties. These results provide design guidelines for a particular material, while the methodology outlined for assessing feature resolution and flexural strength is broadly applicable to other ceramics, enabling more predictable part performance when considering the future design and manufacture of complex ceramic parts.
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Xanat Vargas Meza, Zhexin Zhang and Yoichi Ochiai
This study explores previous research related to textile management technologies, detecting gaps and opportunities for textiles made by Ainu people. We also propose an approach to…
Abstract
Purpose
This study explores previous research related to textile management technologies, detecting gaps and opportunities for textiles made by Ainu people. We also propose an approach to digitally read Ainu textile patterns.
Design/methodology/approach
We employed indigenous and pluriversal design frameworks to evaluate textile pattern technologies. They were operationalised as Indigenous/local researchers involved in the investigation, multi-sensoriality of analysed items, prosperity for everyone involved, communal property of data, biological awareness, social complexity awareness and sensitivity of the analysed method if the items change.
Findings
Textile pattern technology researchers have mostly used neural networks and clustering methods. They have addressed social aspects since the 2000s. Investigations into the generation of textiles based in Poland constantly reflected the most pluriversal characteristics. Regarding Ainu textile research, most investigations have cited Indigenous sources. Two gaps emerged: the concentration of research datasets and results in enterprises or scholars and the focus on the formal characteristics of Ainu patterns in technical papers and contextual characteristics in ethnographic papers.
Research limitations/implications
Heritage management is increasingly employing technological tools that should consider the sustainability of handmade/artisanal goods. As most investigations on textile patterns are conducted by the industry, their benefits are limited for heritage conservation.
Practical implications
Therefore, we suggest digital experts work together with ethnography and Indigenous experts, proposing a method for digital reading of Ainu textile patterns that incorporates pluriversal aspects into heritage conservation.
Originality/value
Pluriversal design is a set of onthologies proposed with Indigenous, mestizo and minorities from the Americas that is currently being diffused in the rest of the world, highly compatible with the analysis of Indigenous heritage.
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María-Luz Martín-Peña, José-María Sánchez-López and Eloísa Díaz-Garrido
This paper aims to present a comprehensive framework that integrates the emerging trends of servitization and digitalization in manufacturing. The influence between digitalization…
Abstract
Purpose
This paper aims to present a comprehensive framework that integrates the emerging trends of servitization and digitalization in manufacturing. The influence between digitalization and servitization is defined and quantified. Their contribution to firm performance is analyzed.
Design/methodology/approach
This paper presents a theoretical model that captures the relationships between the analyzed variables. Drawing on the Spanish Business Strategy Survey, hypothesis testing is conducted using data on 828 Spanish industrial firms. Linear regression models are built to capture the effect of each variable on firm performance and the type of interaction between the variables.
Findings
Servitization and digitalization are positively related to firm performance. Digitalization positively mediates the relationship between servitization and firm performance. The mediating effect of digitalization contributes to differentiating between the direct and indirect effects of servitization on firm performance.
Practical implications
The paper provides a useful analysis framework for firms to evaluate servitization and digitalization as success strategies. It is proposed that firms must simultaneously commit to digital transformation and the incorporation of services to create value, especially in business-to-business settings. Servitization and digitalization interact to exert a greater influence on performance.
Originality/value
The paper contributes to the theory on service strategy by providing an analysis model that includes digitalization as a mediator of the relationship between servitization and firm performance. Digitalization may provide a mechanism to unlock the benefits of servitization and thereby enhance firm performance.
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Companies are increasingly benefiting from artificial intelligence (AI) applications in various domains, but also facing its negative impacts. The challenge lies in the lack of…
Abstract
Purpose
Companies are increasingly benefiting from artificial intelligence (AI) applications in various domains, but also facing its negative impacts. The challenge lies in the lack of clear governance mechanisms for AI. While documentation is a key governance tool, standard software engineering practices are inadequate for AI. Practitioners are unsure about how to document AI, raising questions about the effectiveness of current documentation guidelines. This review examines whether AI documentation guidelines meet regulatory and industry needs for AI applications and suggests directions for future research.
Design/methodology/approach
A structured literature review was conducted. In total, 38 papers from top journals and conferences in the fields of medicine and information systems as well as journals focused on fair, accountable and transparent AI were reviewed.
Findings
This literature review contributes to the literature by investigating the extent to which current documentation guidelines can meet the documentation requirements for AI applications from regulatory bodies and industry practitioners and by presenting avenues for future research. This paper finds contemporary documentation guidelines inadequate in meeting regulators’ and professionals’' expectations. This paper concludes with three recommended avenues for future research.
Originality/value
This paper benefits from the insights from comprehensive and up-to-date sources on the documentation of AI applications.
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Hedaia-t-Allah Nabil Abd Al Ghaffar
The purpose of this paper is to try to reach the main factors that could put national security at risk as a result of government cloud computing programs.
Abstract
Purpose
The purpose of this paper is to try to reach the main factors that could put national security at risk as a result of government cloud computing programs.
Design/methodology/approach
The paper adopts the analytical approach to first lay foundations of the relation between national security, cybersecurity and cloud computing, then it moves to analyze the main vulnerabilities that could affect national security in cases of government cloud computing usage.
Findings
The paper reached several findings such as the relation between cybersecurity and national security as well as a group of factors that may affect national security when governments shift to cloud computing mainly pertaining to storing data over the internet, the involvement of a third party, the lack of clear regulatory frameworks inside and between countries.
Practical implications
Governments are continuously working on developing their digital capacities to meet citizens’ demands. One of the most trending technologies adopted by governments is “cloud computing”, because of the tremendous advantages that the technology provides; such as huge cost-cutting, huge storage and computing capabilities. However, shifting to cloud computing raises a lot of security concerns.
Originality/value
The value of the paper resides in the novelty of the topic, which is a new contribution to the theoretical literature on relations between new technologies and national security. It is empirically important as well to help governments stay safe while enjoying the advantages of cloud computing.