Environmental Advantages in Additive Manufacturing

Additive Manufacturing (AM) is a technology that uses a variety of methods to ultimately apply layers of material and create products (Ford & Despeisse, 2016; Ford, Mortara & Minshall, 2016). Although there has been an expansion in recent technology, AM has been used in manufacturing for a few decades (Ford, Mortara, et al., 2016). Since the late 1980s, AM has grown from simple product designs, with a focus on prototyping and customization, to modern times with billions of dollars in revenue and large-scale production of consumer and industrial products (Cotteleer, 2014). Forecasts showed a near $10 billion market by 2020, with automotive, aerospace and medical industries leading the way (Cotteleer, 2014)

IMPACT: The Journal of the Center for Interdisciplinary Teaching and Learning. Volume 7, Issue 2, Summer 2018

IMPACT: The Journal of the Center for Interdisciplinary Teaching & Learning is a peer-reviewed, biannual online journal that publishes scholarly and creative non-fiction essays about the theory, practice and assessment of interdisciplinary education. Impact is produced by the Center for Interdisciplinary Teaching & Learning at the College of General Studies, Boston University (www.bu.edu/cgs/citl).In the weeks and months following August 12, 2017, members of the Boston University community struggled — like Americans everywhere — to comprehend the series of troubling, and tragic, events which would come, almost immediately, to be denoted in the national imagination by the metonym “Charlottesville.” This special issue of Impact: The Journal of the Center for Interdisciplinary Teaching & Learning comprises a series of responses to these events and their aftermath, as well as the conditions which enabled them, by faculty members from across the BU campus

Physical activity in the lives of two generations of black professional women in the Nelson Mandela Metropolitan Municipality

The association between physical inactivity, adverse health and hypokinetic diseases has been widely researched. There is an increased risk of being overweight, and of developing certain chronic diseases and suffering premature death associated with physical inactivity (Young, Miller, Wilder, Yanek & Becker, 1998). Recent surveys and studies have revealed that the majority of the South African population has moved extensively along the epidemiological transition towards a disease profile related to Western lifestyle, where deaths due to chronic diseases of lifestyle is a great cause for concern (Steyn, 2006). Black women, in particular, have been identified as a high risk group with the highest levels of inactivity and the highest levels of overweight and obesity in the country (SADHS, 1998; WHO, 2005). Although there is a growing body of knowledge and research on physical activity in general, there is still a lack of data on the determinants and barriers to participation in physical activity (Lambert & Kolbe-Alexander, 2006). Cultural patterns and economic, political and ideological orders affect the participation of women in sport (Hargreaves, 1994:5). Black women in South Africa have been disadvantaged by the past government’s policy of apartheid, and have also been marginalized and oppressed in their own patriarchal societies. The first democratically elected government in 1994, however, committed itself to gender equality and women’s emancipation, with constitutional guarantees on equality and an affirmative action policy to address gender inequalities. In order to evaluate the extent of the beneficial impact of these political changes in women’s lives, this study proposed to investigate physical activity patterns in the lives of two generations of black professional women (teachers, nurses, social workers and public managers) from the Nelson Mandela Metropolitan Municipality. The objectives that guided the research were: • To describe and compare the physical activity patterns and health status of two generations of black women through questionnaires, physical activity records and mechanical devices. • To explore and describe the psychosocial context and socio-cultural influences on physical activity in the lives of the participants. xi • To explore and describe the participants’ perceptions and attitudes, motivations and constraints relating to physical activity. • To use the research findings to compile guidelines to promote physical activity participation among black women. A mixed method approach using both quantitative and qualitative methods was selected to achieve an holistic understanding of physical activity in the lives of black South African women. The older generation (OG) of professional women was comprised of community teachers, nurses, social workers and public managers (n=111, aged 35 to 45 years, mean age = 39.87 years). These women, through their occupations, were in constant contact with the community and could be regarded as role models who influence community lifestyle, attitudes and behaviour. The younger generation (YG) (n=69, aged 18 to 21 years, mean age = 20.12 years) was comprised of teaching, nursing, social work and public management students in the Nelson Mandela Metropolitan Municipality. The objective of the quantitative section of the study was to provide baseline information on the physical activity patterns and health status of these two generations of black professional women. Physical activity and health questionnaires were administered and the ActiGraph GT1 accelerometer was used to provide an objective measure of energy expenditure. The objective of the qualitative data collection was to explore and describe the psychosocial context and socio-cultural influences on physical activity in the lives of the participants, and to investigate their attitudes to and perceptions of physical activity, and their motivations and constraints related to it. In-depth qualitative interviews were held with the participants who wore the ActiGraph, and a group of 47 were interviewed (sample size determined by data saturation from the interviews). An explorative-descriptive research design was used in the study. The sampling method was purposive and criterion-based. The younger generation of students were mostly selected from the various campuses of the Nelson Mandela Metropolitan University, while additional student nurses were recruited from the Lilitha Nursing College in the Nelson Mandela Metropolitan Municipality. The older generation of professionals were recruited from schools and clinics in the areas of New Brighton, Kwa-Zakhele, Zwide, Motherwell and Kwa-Nobuhle (all historically black areas), the Eastern Cape Department of Social Development, non-government organizations and the Nelson Mandela Metropolitan Municipality. xii The quantitative data were analysed by means of descriptive and inferential statistics. The qualitative data was analysed according to the steps described in Creswell (2003). The results of the quantitative data indicated that prevalence of overweight and obesity among both the YG and OG was high. The mean BMI for the YG and OG were 24.71 kg/m2 and 31.27 kg/m2, respectively, with 41% of the YG and 86% of the OG falling into the overweight/obesity category. BMI was significantly greater (p<.05) for the OG than for the YG. In addition, both the OG and YG had satisfactory scores for the health-related behaviour measures (the Belloc and Breslow Lifestyle Index and the HPLP). All the physical activity measurements (the FIT Index of Kasari, the GPAQ and the ActiGraph data) confirmed that both the YG and OG were not sufficiently physically active. They did not meet the Centre of Disease Control (CDC) and American College of Sports Medicine (ACSM) recommendation of engaging in at least 30 minutes of moderate-intensity physical activity on most, or preferably all, days of the week. The YG were significantly more active than the OG in all the physical activity measuring instruments. They were still, however, not reaching the health enhancing physical activity (HEPA) level (≥7 days of any combination of moderate and vigorous activity, ≥ 3000 METmins/week). Pearson Product Moment correlations were calculated to determine the relationship among the various measurements of physical activity o the one hand and the relationship between the measurements of physical activity and the health-related behaviour measurements on the other hand. The correlational analyses highlighted a good cross-validation of the various measures of physical activity. There was a significant correlation between the measures of leisure time physical activity, that is the FIT Index, and the leisure domain of the GPAQ. There was also a significant relationship in the area of walking or steps taken, that is the ActiGraph steps and the GPAQ transport domain. There was also a significant relationship between the overall measures of physical activity, that is the GPAQ total score, and the ActiGraph calories. The correlations between the various physical activity and health related behaviour measures revealed that only the leisure related physical activity measurements, that is, the FIT index and the GPAQ leisure domain, had a significant correlation with the two health related behaviour measures, namely the Belloc and Breslow Lifestyle Index and the HPLP, respectively. xiii The results from the qualitative data revealed that both the OG and YG had positive attitudes towards physical activity participation (displayed by their awareness of the many benefits, their expressed intention to start exercising, the encouragement given to their children in relation to physical activity participation), even though the majority of them were not active on a regular basis. Participants recognized the educational, recreational and developmental importance of being physically active, a shift in attitude from their own upbringing and lifestyles. Regardless of how firmly people may believe that physical activity is beneficial to their health, there are many barriers, whether real or perceived, that represent significant potential obstructions to the adoption, maintenance, or resumption of participation in physical activity (Booth et al., 1997). Three sub-themes were identified in relation to the barriers to physical activity participation, namely personal factors, environmental factors and socio-cultural factors. The personal factors included time constraints, stress and tiredness, lack of motivation, negative school experiences, negative associations with exercise and financial constraints. The environmental factors included residential areas, availability of recreation and sports facilities, and safety. The socio-cultural factors were lack of social support, exercise “not being a part of African culture”, traditional roles of males and females, dress code, exercise associated with the young, exercise associated with undesirable weight loss and negative comments by the community. On the basis of research findings, guidelines were drawn up for the promotion of physical activity participation among black women

Establishing experimental systems for studying the replication biology of Providence virus

Providence virus (PrV) is a member of the Tetraviridae, a family of small, positive sense, single-stranded RNA viruses, which characteristically infect the midgut tissue of heliothine larvae. PrV is the only known tetravirus that replicates in cultured insect cells. The virus comprises a monopartite genome resembling members of the genus Betatetravirus with the capsid precursor protein undergoing autoproteolytic cleavage at its C-terminus consistent with other tetravirus capsid precursor proteins. Analysis of viral cDNA predicted the presence of three potential overlapping gene products (from 5` to 3`): (1) p130, a protein of unrecognized nucleotide or amino acid homology with a 2A-like processing site at its N-terminus; (2) p104, the replicase ORF, which was found to be phylogenetically related to tombus-and umbraviruses replicases. The presence of a read-through stop signal in the p104 ORF was proposed to produce and amino terminal product with a predicted MW of 40 kDa (p40) and (3) the capsid protein precursor (81 kDa) which has two 2A-like processing sites at its N-terminus. Metabolic radiolabelling of viral translation products in persistently infected MG8 cells and in vitro translation of the individual ORFs were performed in order to analyse the expression of PrV gene products. p130 was translated with no evidence of 2A-like processing. Two products of 40 kDa and 104 kDa were translated from the p104 ORF, indicating that the read-through stop signal was likely to be functional. Finally, the capsid protein precursor ORF produced a major translation product of 68 kDa corresponding to the capsid protein precursor as well a peptide of 15 kDa that was attributed to the activity of the second 2A-like site at the N-terminus of the p81 ORF. The subcellular distribution of viral RNA (vRNA) and p40 in MG8 cells was investigated using immunofluorescence and biochemical fractionation. The results showed that p40/p104 and vRNA accumulated in polarized, punctate structures in some but not all MG8 cells and in some cases, co-localization was observed. This thesis concludes that PrV is a novel tetravirus with significant similarities plant carmolike viruses that should be re-classified at the family level

Physical activity in the lives of two generations of black professional women in the Nelson Mandela Metropolitan Municipality

The association between physical inactivity, adverse health and hypokinetic diseases has been widely researched. There is an increased risk of being overweight, and of developing certain chronic diseases and suffering premature death associated with physical inactivity (Young, Miller, Wilder, Yanek & Becker, 1998). Recent surveys and studies have revealed that the majority of the South African population has moved extensively along the epidemiological transition towards a disease profile related to Western lifestyle, where deaths due to chronic diseases of lifestyle is a great cause for concern (Steyn, 2006). Black women, in particular, have been identified as a high risk group with the highest levels of inactivity and the highest levels of overweight and obesity in the country (SADHS, 1998; WHO, 2005). Although there is a growing body of knowledge and research on physical activity in general, there is still a lack of data on the determinants and barriers to participation in physical activity (Lambert & Kolbe-Alexander, 2006). Cultural patterns and economic, political and ideological orders affect the participation of women in sport (Hargreaves, 1994:5). Black women in South Africa have been disadvantaged by the past government’s policy of apartheid, and have also been marginalized and oppressed in their own patriarchal societies. The first democratically elected government in 1994, however, committed itself to gender equality and women’s emancipation, with constitutional guarantees on equality and an affirmative action policy to address gender inequalities. In order to evaluate the extent of the beneficial impact of these political changes in women’s lives, this study proposed to investigate physical activity patterns in the lives of two generations of black professional women (teachers, nurses, social workers and public managers) from the Nelson Mandela Metropolitan Municipality. The objectives that guided the research were: • To describe and compare the physical activity patterns and health status of two generations of black women through questionnaires, physical activity records and mechanical devices. • To explore and describe the psychosocial context and socio-cultural influences on physical activity in the lives of the participants. xi • To explore and describe the participants’ perceptions and attitudes, motivations and constraints relating to physical activity. • To use the research findings to compile guidelines to promote physical activity participation among black women. A mixed method approach using both quantitative and qualitative methods was selected to achieve an holistic understanding of physical activity in the lives of black South African women. The older generation (OG) of professional women was comprised of community teachers, nurses, social workers and public managers (n=111, aged 35 to 45 years, mean age = 39.87 years). These women, through their occupations, were in constant contact with the community and could be regarded as role models who influence community lifestyle, attitudes and behaviour. The younger generation (YG) (n=69, aged 18 to 21 years, mean age = 20.12 years) was comprised of teaching, nursing, social work and public management students in the Nelson Mandela Metropolitan Municipality. The objective of the quantitative section of the study was to provide baseline information on the physical activity patterns and health status of these two generations of black professional women. Physical activity and health questionnaires were administered and the ActiGraph GT1 accelerometer was used to provide an objective measure of energy expenditure. The objective of the qualitative data collection was to explore and describe the psychosocial context and socio-cultural influences on physical activity in the lives of the participants, and to investigate their attitudes to and perceptions of physical activity, and their motivations and constraints related to it. In-depth qualitative interviews were held with the participants who wore the ActiGraph, and a group of 47 were interviewed (sample size determined by data saturation from the interviews). An explorative-descriptive research design was used in the study. The sampling method was purposive and criterion-based. The younger generation of students were mostly selected from the various campuses of the Nelson Mandela Metropolitan University, while additional student nurses were recruited from the Lilitha Nursing College in the Nelson Mandela Metropolitan Municipality. The older generation of professionals were recruited from schools and clinics in the areas of New Brighton, Kwa-Zakhele, Zwide, Motherwell and Kwa-Nobuhle (all historically black areas), the Eastern Cape Department of Social Development, non-government organizations and the Nelson Mandela Metropolitan Municipality. xii The quantitative data were analysed by means of descriptive and inferential statistics. The qualitative data was analysed according to the steps described in Creswell (2003). The results of the quantitative data indicated that prevalence of overweight and obesity among both the YG and OG was high. The mean BMI for the YG and OG were 24.71 kg/m2 and 31.27 kg/m2, respectively, with 41% of the YG and 86% of the OG falling into the overweight/obesity category. BMI was significantly greater (p<.05) for the OG than for the YG. In addition, both the OG and YG had satisfactory scores for the health-related behaviour measures (the Belloc and Breslow Lifestyle Index and the HPLP). All the physical activity measurements (the FIT Index of Kasari, the GPAQ and the ActiGraph data) confirmed that both the YG and OG were not sufficiently physically active. They did not meet the Centre of Disease Control (CDC) and American College of Sports Medicine (ACSM) recommendation of engaging in at least 30 minutes of moderate-intensity physical activity on most, or preferably all, days of the week. The YG were significantly more active than the OG in all the physical activity measuring instruments. They were still, however, not reaching the health enhancing physical activity (HEPA) level (≥7 days of any combination of moderate and vigorous activity, ≥ 3000 METmins/week). Pearson Product Moment correlations were calculated to determine the relationship among the various measurements of physical activity o the one hand and the relationship between the measurements of physical activity and the health-related behaviour measurements on the other hand. The correlational analyses highlighted a good cross-validation of the various measures of physical activity. There was a significant correlation between the measures of leisure time physical activity, that is the FIT Index, and the leisure domain of the GPAQ. There was also a significant relationship in the area of walking or steps taken, that is the ActiGraph steps and the GPAQ transport domain. There was also a significant relationship between the overall measures of physical activity, that is the GPAQ total score, and the ActiGraph calories. The correlations between the various physical activity and health related behaviour measures revealed that only the leisure related physical activity measurements, that is, the FIT index and the GPAQ leisure domain, had a significant correlation with the two health related behaviour measures, namely the Belloc and Breslow Lifestyle Index and the HPLP, respectively. xiii The results from the qualitative data revealed that both the OG and YG had positive attitudes towards physical activity participation (displayed by their awareness of the many benefits, their expressed intention to start exercising, the encouragement given to their children in relation to physical activity participation), even though the majority of them were not active on a regular basis. Participants recognized the educational, recreational and developmental importance of being physically active, a shift in attitude from their own upbringing and lifestyles. Regardless of how firmly people may believe that physical activity is beneficial to their health, there are many barriers, whether real or perceived, that represent significant potential obstructions to the adoption, maintenance, or resumption of participation in physical activity (Booth et al., 1997). Three sub-themes were identified in relation to the barriers to physical activity participation, namely personal factors, environmental factors and socio-cultural factors. The personal factors included time constraints, stress and tiredness, lack of motivation, negative school experiences, negative associations with exercise and financial constraints. The environmental factors included residential areas, availability of recreation and sports facilities, and safety. The socio-cultural factors were lack of social support, exercise “not being a part of African culture”, traditional roles of males and females, dress code, exercise associated with the young, exercise associated with undesirable weight loss and negative comments by the community. On the basis of research findings, guidelines were drawn up for the promotion of physical activity participation among black women

Physical activity and health: building health-promoting schools in Gqeberha and beyond

For this address, I thought it would be appropriate to share information on the research into the physical activity, health and wellbeing of primary school children living in the Northern Areas and townships of Gqeberha – which formed part of the 10-year collaboration between the Department of Human Movement Science at Nelson Mandela University, the Department of Sport, Exercise and Health at the University of Basel and the Swiss Tropical and Public Health Institute, in Basel, Switzerland. Three large studies formed the core of the 10-year collaboration: the Disease, Activity and Schoolchildren’s Health (DASH) study, the KaziBantu Project and the KaziAfya study

Physical activity and health: building health-promoting schools in Gqeberha and beyond

For this address, I thought it would be appropriate to share information on the research into the physical activity, health and wellbeing of primary school children living in the Northern Areas and townships of Gqeberha – which formed part of the 10-year collaboration between the Department of Human Movement Science at Nelson Mandela University, the Department of Sport, Exercise and Health at the University of Basel and the Swiss Tropical and Public Health Institute, in Basel, Switzerland. Three large studies formed the core of the 10-year collaboration: the Disease, Activity and Schoolchildren’s Health (DASH) study, the KaziBantu Project and the KaziAfya study

Narrating the Experiences of First-year Faculty in the Engineering Education Research Community: Developing a Qualitative, Collaborative Research Methodology

In this work-in-progress, we will illustrate how we used two collaborative, qualitative research methods to narrate the experiences of six engineering education researchers (EERs) as we transition into new faculty roles within the EER community. To explore this phenomenon, we developed a community of practice where we shared our experiences and informed our practice through written reflections and weekly meetings. Using the Q3 qualitative research framework as a guide for establishing procedures, we combined elements from collaborative autoethnography and collaborative inquiry to narrate our experiences. We analyzed a subset of our first semester reflections to understand the challenges we faced in our new positions and support we received from our weekly meetings. We found the time management of teaching, research, and service to be overarching challenges. Additionally, the support from our weekly meetings provided a sense of community and place to receive advice to address these and other challenges. We found that the proposed collaborative qualitative research methodology was useful for not only exploring the experiences of new faculty, but also supporting the development of EERs

Best Practices for Developing a Virtual Peer Mentoring Community

Engineering faculty are faced with a variety of challenges ranging from teaching responsibilities, navigating research, and negotiating service demands. Due to the nature of the emerging field of engineering education and the emphasis on education within the ASEE community, there is a need to develop methods to facilitate cross-institutional mentoring. While many institutions offer formal mentoring in some capacity, there are limitations and challenges associated with these support structures. Some common challenges are scheduling a time to meet, navigating institutional power dynamics, and identifying individuals with shared interests and goals. This work proposes best practices for the development of an innovative peer mentoring structure that accounts for shared commitment to the advancement of engineering education. This paper will provide insight for engineering education faculty who are currently transitioning into or are planning to pursue a career in academia in the future. We will describe a framework to create a virtual community for peer mentoring. The value of a virtual peer mentoring community is that it can provide support that may not be available within one’s institution and it minimizes the negative impacts that may be associated with institutional power dynamics. The best practices that we will describe are informed by six early career engineering education faculty that developed and participated in a virtual community over the last two years. We will describe best practices in relation to identifying a shared vision, developing possible tangible outcomes, writing operating procedures for the group, selecting an appropriate platform for communication, and facilitating reflection and changes to practice