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Article
Publication date: 14 June 2022

Sreenadh Sreedharamalle, Sumalatha Baina and Srinivas A.N.S.

This paper aims to investigate the flow of two-layered non-Newtonian fluids with different viscosities in an axisymmetric elastic tube.

Abstract

Purpose

This paper aims to investigate the flow of two-layered non-Newtonian fluids with different viscosities in an axisymmetric elastic tube.

Design/methodology/approach

A mathematical model was considered for this study to describe the flow characteristics of two-layered non- Newtonian Jeffrey fluids in an elastic tube. Because Jeffrey fluid model is a better model for the description of physiological fluid motion. Further, this model is a significant generalization of Newtonian fluid model. Analytical expressions for flux, stream functions, velocities and interface velocity have been derived in terms of elastic parameters, inlet, outlet and external pressures. The effects of various pertinent parameters on the flow behavior have been studied.

Findings

The volumetric flow rate was calculated by different models of Mazumdar (1992) and Rubinow and Keller (1972); from this it was found that the flux of Jeffrey fluid is more in the case of Rubinow and Keller model than Mazumdar. A comparative study is made between single-fluid and two-fluid models of Jeffrey fluid flows and it was observed that more flux and higher velocities were observed in the case of two-fluid model rather than single-fluid model. Furthermore, when both the Jeffrey parameter tends to zero and ratios of viscosities and radii are unity, the results in this study agree with those of Rubinow and Keller (1972).

Originality/value

To describe the fluid flow in an elastic tube with two-layered systems, the models and solutions developed here are very important. These results will be highly suitable in analyzing the rheological characteristics of blood flow in a small blood vessel because of their elastic nature.

Details

World Journal of Engineering, vol. 20 no. 6
Type: Research Article
ISSN: 1708-5284

Keywords

Book part
Publication date: 31 January 2024

Julie Nichols, Jeffrey Newchurch, Robert Rigney, Tinesha Miller and Bonita Sansbury

This chapter came about, after five years of working with the Ngadjuri community on speculative student cultural centre designs. Ideation for those conversations and studio-based…

Abstract

This chapter came about, after five years of working with the Ngadjuri community on speculative student cultural centre designs. Ideation for those conversations and studio-based interactions, in addition to time and cultural tours spent on Country, revealed a variety of opinions and hopes that exist within the Ngadjuri community for a place to celebrate their cultural heritage. This heritage has an incredible history, and the idea of a cultural centre has been topical since the late Uncle Vince Copley Senior worked with other Ngadjuri community members such as Robert Rigney, on Country and in an advocacy role for Ngadjuri more than 30 years ago. This series of yarnings from a two-part transcription process re-awakens those desires of Elders now passed. The transcriptions are complemented with literature around yarning as a research methodology that delivers current, immediate, and insightful personal thoughts, although only as personal as the lead yarner wishes to share. In addition, the literature contextualises the key themes of which the yarnings divulge. Research has indicated how yarning interactions and interrelationships create a unique dynamic between the researcher and the community members. It is these rich experiences where knowledge is shared in a two-way exchange that is noteworthy for the galleries, libraries, archives, and museums [GLAM] sector. GLAM sector priorities must implement policy to pursue future Indigenisation of their epistemological methods and ontological systems. To address any future data curation of Ngadjuri cultural heritage materials on Country or in GLAM, hearing the personal stories and desires seemed timely and necessary.

Details

Data Curation and Information Systems Design from Australasia: Implications for Cataloguing of Vernacular Knowledge in Galleries, Libraries, Archives, and Museums
Type: Book
ISBN: 978-1-80455-615-3

Keywords

Article
Publication date: 19 December 2023

Aysen Bakir, Jessica Castonguay and Jeffrey G. Blodgett

This study aims to examine the effects of character body size, subject body size and product type on female adolescents’ attitudes toward the character. Given prior research…

Abstract

Purpose

This study aims to examine the effects of character body size, subject body size and product type on female adolescents’ attitudes toward the character. Given prior research showing that adolescents identify more strongly with those whom they view as similar to themselves, it is possible that heavy and obese adolescents will react more favorably to plus-size ad characters.

Design/methodology/approach

Two studies were conducted, one with females aged 12–14 and a second with females aged 15–17. Based on their body mass index, subjects were classified as of small/average size or overweight/obese. Ads featured either a thin, average-size or plus-size character, and promoted either a healthful or an unhealthful snack item.

Findings

In general, small/average size female adolescents responded more favorably toward thin characters, whereas their overweight/obese counterparts responded more favorably toward plus-size characters. Moreover, subjects’ responses were not moderated by the nutritional value (healthful vs unhealthful) of the product being advertised.

Research limitations/implications

To effectively promote healthy foods to overweight/obese adolescents, it may be advantageous to incorporate plus-size characters. Additional research is needed, however, to determine whether this approach can effectively influence brand attitudes and consumption behaviors.

Social implications

As obesity rates continue to rise, it has become vitally important to encourage healthier food choices among youth. To develop effective communication strategies, marketers need to better understand how young consumers respond to various advertising cues.

Originality/value

To the best of the authors’ knowledge, this is the first study to examine the effect of character size and subject size on female adolescents’ attitudes toward the character.

Details

Journal of Consumer Marketing, vol. 41 no. 1
Type: Research Article
ISSN: 0736-3761

Keywords

Abstract

Details

Unsettling Colonial Automobilities
Type: Book
ISBN: 978-1-80071-082-5

Content available
Book part
Publication date: 26 April 2024

Abstract

Details

Special Education
Type: Book
ISBN: 978-1-83753-467-8

Book part
Publication date: 14 December 2023

Philippa Collin, Judith Bessant and Rob Watts

Since 2018, millions of students have mobilised as organisers, advocates and activists for action on global warming in movements like the School Strike 4 Climate. In Australia, an…

Abstract

Since 2018, millions of students have mobilised as organisers, advocates and activists for action on global warming in movements like the School Strike 4 Climate. In Australia, an estimated 500,000 school students, some as young as five, and predominantly girls and young women, have taken part in coordinated school strikes, protest actions online and in cities and towns around the country (Hilder & Collin, 2022). While children and young people have long been central to politics, this more recent mass mobilisation raises new questions about how the various new forms of political participation and expression adopted by young people are significantly reshaping political norms, values and practices in ostensibly liberal democratic regimes like Australia. In this chapter, we propose that close attention be given to whether young people’s political views and demands for political recognition, rights and climate justice is re-constituting politics and whatever passes for ‘democracy’ in contemporary societies. Drawing on a study of the student climate movement in Australia, this chapter briefly describes the emergence of the movement globally and locally. Deploying Isin’s notion of ‘acts of citizenship’ (Isin, 2008), we examine the ways young climate activists are engaged in critical, performative, political practice, making claims for political recognition, rights and climate justice.

Details

Childhood, Youth and Activism: Demands for Rights and Justice from Young People and their Advocates
Type: Book
ISBN: 978-1-80117-469-5

Keywords

Article
Publication date: 2 April 2024

Jeff Allen, Reena Patel, Tomas Mondragon and Oliver Taylor

Among the various applications involving the use of microwave energy, its growing utility within the mining industry is particularly noteworthy. Conventional grinding processes…

Abstract

Purpose

Among the various applications involving the use of microwave energy, its growing utility within the mining industry is particularly noteworthy. Conventional grinding processes are often overburdened by energy inefficiencies that are directly related to machine wear, pollution and rising project costs. In this work, we numerically investigate the effects of microwave pretreatment through a series of compression tests as a means to help mitigate these energy inefficiencies.

Design/methodology/approach

We investigate the effects of microwave pretreatment on various rock samples, as quantified by uniaxial compression tests. In particular, we assign sample heterogeneity based on a Gaussian statistical distribution and invoke a damage model for elemental tensile and compressive stresses based on the maximum tensile stress and the Mohr–Coulomb theories, respectively. We further couple the electromagnetic, thermal and solid displacement relations using finite element modeling.

Findings

(1) Increased power intensity during microwave pretreatment results in decreased axial compressive stress. (2) Leveraging statistics to induce variable compressive and tensile strength can greatly facilitate sample heterogeneity and prove necessary for damage modeling. (3) There exists a nonlinear trend to the reduction in smax with increasing power levels, implying an optimum energy output efficiency to create the maximum degradation-power cost relationship.

Originality/value

Previous research in this area has been largely limited to two-dimensional thermo-electric models. The onset of high-performance computing has allowed for the development of high-fidelity, three-dimensional models with coupled equations for electromagnetics, heat transfer and solid mechanics.

Details

Multidiscipline Modeling in Materials and Structures, vol. ahead-of-print no. ahead-of-print
Type: Research Article
ISSN: 1573-6105

Keywords

Book part
Publication date: 26 April 2024

Molly Pasley and Stacy M. Kelly

This chapter discusses what special education means for students with visual impairments (that is, those who are blind or have low vision) including what is being done and how…

Abstract

This chapter discusses what special education means for students with visual impairments (that is, those who are blind or have low vision) including what is being done and how traditions are maintained. More specifically, this chapter explores the importance of advancing values for the diverse population of students with visual impairments, focusing on cultivation of supportive, inclusive, and collaborative educational environments that continue to stand the test of time. This chapter highlights the increasing heterogeneity of this population of students and specific instructional strategies to support the cultural and linguistic diversity of learners with visual impairments in today's classrooms. This chapter also discusses the significance of promoting core concepts that are rooted in a traditional and specialized instructional framework for students who are visually impaired.

Details

Special Education
Type: Book
ISBN: 978-1-83753-467-8

Keywords

Book part
Publication date: 26 April 2024

Jennifer A. Kurth and Alison L. Zagona

Values have long guided special education services and supports for students with extensive support needs; over the past four decades, those values have been backed by research…

Abstract

Values have long guided special education services and supports for students with extensive support needs; over the past four decades, those values have been backed by research evidence demonstrating the critical nature of values related to inclusive education, self-determination, and seeking strengths and assets. In this chapter, we investigate these values and their supporting research, documenting strengths and needs in extant research. We emphasize the need to continue to embrace and maintain these values while pursuing research that addresses research gaps while centering the priorities, perspectives, and preferences of people with extensive support needs.

Book part
Publication date: 31 January 2024

Julie Nichols, Lynette Newchurch, Ann Newchurch, Rebecca Agius and David Weetra

Country and cultural heritage are inextricably linked for First Nations peoples. This chapter explores those relationships in the context of repatriating cultural heritage…

Abstract

Country and cultural heritage are inextricably linked for First Nations peoples. This chapter explores those relationships in the context of repatriating cultural heritage materials back to Country and conceptualising a place for its ‘awakening’ for the Ngadjuri community of Mid-North South Australia. These materials in the context of this book ‘interpreted’ as a form of data curation, requiring potentially unique information systems designs to achieve accessibility, recoverability, and durability in remote communities with limited internet and mobile phone coverage. On the other hand, it is critically important to note, that the processes, challenges and repatriation of culturally sensitive materials and remains, are dependant here on the limitations of language. The reference to the notion of ‘data’ as a descriptor, and an inadequate term on some level, does not, and is not intended to, diminish any of their cultural significance and gravity. These are challenges that are worth the intellectual and technological investment to realise a return to Country for generationally displaced peoples and their cultural property that also needs to make it home.

Details

Data Curation and Information Systems Design from Australasia: Implications for Cataloguing of Vernacular Knowledge in Galleries, Libraries, Archives, and Museums
Type: Book
ISBN: 978-1-80455-615-3

Keywords

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