Now showing items 1-20 of 13220

    • Predicting Lower Quarter Y-Balance Test Performance from Foot Characteristics

      Chimera, Nicole J.; Larson, Mallorie (Human Kinetics, 2020)
      The lower quarter Y-Balance Test (YBT-LQ) is associated with injury risk; however, ankle range of motion impacts YBT-LQ. Arch height and foot sensation impact static balance, but these characteristics have not yet been evaluated relative to YBT-LQ. Determine if arch height index (AHI), forefoot sensation (SEN), and ankle dorsiflexion predict YBT-LQ composite score (CS). Descriptive cohort. Athletic training laboratory. Twenty general population (14 females and 6 males; mean [SD]: age 35 [18] y, weight 70.02 [16.76] kg, height 1.68 [0.12] m) participated in this study. AHI measurement system assessed arch height in 10% (AHI10) and 90% (AHI90) weight-bearing. Two-point discrim-a-gon discs assessed sensation (SEN) at the plantar great toe, third and fifth metatarsal heads. Biplane goniometer and weight-bearing lunge tests were used to measure static and weight-bearing dorsiflexion, respectively. The YBT-LQ assessed dynamic single-leg balance. For right-limb dynamic single-leg balance, AHI90 and SEN were included in the final sequential prediction equation; however, neither model significantly (P = .052 and .074) predicted variance in YBT-LQ CS. For left-limb dynamic single-leg balance, both SEN and weight-bearing lunge test were included in the final sequential prediction equation. The regression model (SEN and weight-bearing lunge test) significantly (P = .047) predicted 22% of the variance in YBT-LQ CS. This study demonstrates that foot characteristics may play a role in YBT-LQ CS. The authors did not assess limb dominance in this study; therefore, the authors are unable to determine which limb would be the stance versus kicking limb. However, altered SEN and weight-bearing dorsiflexion appear to be contributing factors to YBT-LQ CS.
    • George E. Curtis photographs of Niagara Falls collection, ca. 1860s-1870s

      Williams, Edie; Curtis, George E. (2019-12)
      A collection of albumen photographs featuring the American Falls and Horseshoe Falls in Niagara Falls, Ontario and Niagara Falls, New York taken by George E. Curtis ca. 1860s-1870s. Photographs also include parks located near these falls.
    • Travel Photo Album and Scrapbook, 1929-1934

      Cameron, Chantal (2021-06-15)
      One photo album and one scrapbook containing photographs, postcards, and travel manuscripts of a Massachusetts woman and her friends as they travelled to Ontario, New York, Maine, Massachusetts, Connecticut, Pennsylvania, and Illinois from 1929 to 1934. The photo album and scrapbook document several separate trips, including two different visits to Niagara Falls.
    • Niagara-on-the-Lake Postcards collection, 1907-1913, n.d.

      Cameron, Chantal (2021-06-15)
      The collection consists of 22 postcards of Niagara-on-the-Lake. Most of the postcards feature Niagara Camp. Eleven of the postcards are attached and contain different images on the front and back of the card. Images on these cards include the Cook Ovens at Niagara Camp; Fort Mississauga; the Military Hospital Building; Reviewing Artillery; St. Vincent de Paul Church; C.E.F. on Route March leaving Queenston Heights for Niagara Camp; the Queens Royal Hotel; the Guard at Niagara Camp; Wharf Scene; the Y.M.C.A. at Niagara Camp; the Old Powder Magazine at Fort George; the C.E.F. at Niagara Camp; Queen Street; Overseas Forces at Niagara Camp; St. Mark’s Church; Inoculations at Old Navy Hall at Niagara Camp; Steamer Cayuga leaving Niagara-on-the-Lake; Niagara Camp Forces ready to embark for the Front; View of the Wharf and Harbour; and Troops leaving for the Front. Most of the other 11 postcards contain writing. Images on these cards include Fort Mississauga; Disembarking Troops in Niagara-on-the-Lake; A March past Niagara Camp; A Bird’s Eye View of Niagara Training Camp; C.E.F. on route march leaving Queenston Heights for Niagara Camp; Cavalry Review; Drilling C.E. Forces; and Infantry Camp, Niagara-on-the-Lake.
    • Queen’s Own Rifles and 48th Highlanders Order Books

      Cameron, Chantal (2021-06-15)
      Six order books. Four of these belong to the Queen’s Own Rifles (QOR). The remaining two belong to the 48th Highlanders of Canada.
    • Surgite Volume 13 No. 2, Winter 2021

      Brock University (2021)
      Publication of Surgite for Volume 13, Number 2, Winter 2021. The contents are: Letter from the President: Celebrating diversity and alumni success, Recognizing a Canadian hockey trailblazer, History preserved through archive donation, From open-air atrium to Rankin Family Pavilion, Career updates from across the decades, End of an era with passing of Jean Egerter.
    • Socially Inclusive Parenting Leaves and Parental Benefit Entitlements: Rethinking Care and Work Binaries

      Doucet, Andrea (Cogitatio Press, 2021)
      How can parental leave design be more socially inclusive? Should all parents be entitled to parental benefits or only those parents who are eligible based on a particular level of labour market participation? To think through questions of social inclusion in parental leave policy design, particularly issues related to entitlements to benefits, I make three arguments. First, aiming to extend Dobrotić and Blum’s work on entitlements to parental benefits, I argue that ‘mixed systems’ that include both citizenship‐based and employment‐based benefits are just and socially inclusive approaches to parental leaves and citizenship. Second, to build a robust conceptual scaffolding for a ‘mixed’ benefits approach, I argue that that we need to attend to the histories and relationalities of the concepts and conceptual narratives that implicitly or explicitly inform parental leave policies and scholarship. Third, and more broadly, I argue that a metanarrative of care and work binaries underpins most scholarship and public and policy discourses on care work and paid work and on social policies, including parental leave policies. In this article, I outline revisioned conceptual narratives of care and work relationalities, arguing that they can begin to chip away at this metanarrative and that this kind of un‐thinking and rethinking can help us to envi‐ sion parental leave beyond employment policy—as care and work policy. Specifically, I focus on conceptual narratives that combine (1) care and work intra‐connections, (2) ethics of care and justice, and (3) ‘social care,’ ‘caring with,’ transforma‐ tive social protection, and social citizenship. Methodologically and epistemologically, this article is guided by my reading of Margaret Somers’ genealogical and relational approach to concepts, conceptual narratives, and metanarratives, and it is written in a Global North socio‐economic context marked by the COVID‐19 pandemic and 21st century neoliberalism.
    • Surgite Volume 12 No. 1, Spring 2020

      Brock University (2020)
      Publication of Surgite for Volume 12, Number 1, Spring 2020. The contents are: Letter from the President: An unprecedented time in Brock's history, Brock researchers respond to call for help for pandemic knowledge, Alumni in Niagara and beyond tell their Covid-19 stories, Bright future for Brock women's volleyball, Grad couple working at Brock welcome second son during pandemic, Iconic Brock figure Arnie Lowenberger mourned by University.
    • Characterization of neutral sphingomyelinase activity and isoform expression in rodent skeletal muscle mitochondria

      Silvera, Sebastian; Wilkinson, Jennifer A.; LeBlanc, Paul J. (Elsevier, 2021)
      Skeletal muscle is composed of fiber types that differ in mitochondrial content, antioxidant capacity, and susceptibility to apoptosis. Ceramides have been linked to oxidative stress-mediated apoptotic intracellular signalling and the enzyme neutral sphingomyelinase (nSMase) is, in part, responsible for generating these ceramides through the hydrolysis of sphingomyelin. Despite the role of ceramides in mediating apoptosis, there is a gap in the literature regarding nSMase in skeletal muscle mitochondria. This study aimed to characterize total nSMase activity and individual isoform expression in isolated subsarcolemmal (SS) mitochondria from soleus, diaphragm, plantaris, and extensor digitorum longus (EDL). Total nSMase activity did not differ between muscle types. nSMase2 content was detectable in all muscles and higher in EDL, soleus, and plantaris compared to diaphragm whereas nSMase3 was undetectable in all muscles. Finally, total nSMase activity positively correlated to nSMase2 protein content in soleus but not the other muscles.These findings suggest that nSMase associated with SS mitochondria may play a role in intracellular signalling processes involving ceramides in skeletal muscle and nSMase2 may be the key isoform, specifically in slow twitch muscle like soleus. Further studies are needed to fully elucidate the specific contribution of nSMase, along with the role of the various isoforms and mitochondrial subpopulation in generating mitochondrial ceramides in skeletal muscle, and its potential effects on mediating apoptosis.
    • South Asian Immigrant Women Conceptualizing Gender Roles in the Context of Family and Society in Southwestern Ontario

      Ahmed, Ghazala; Department of Graduate and Undergraduate Studies in Education
      Perceptions of gender roles vary in different cultures, influenced by social location and time. Migration to countries that promote liberal values can impact how men and women perceive their gender roles, their interpersonal relationships with family members, and their day to day activities. Informed by a postcolonial-feminist theoretical perspective, this qualitative study aimed to understand South Asian immigrant women’s perceptions about gender roles in the context of family and society, prior to migration, and after immigration to Canada. A unique aspect of this study is that it explored how participants negotiated their gender roles and identity and exercised their agency prior to migration and post immigration. Four major themes emerged in response to the interview questions: 1) immigration and resettlement challenges; 2) gender roles and a patriarchal society in the native country; 3) perceptions of gender role/women’s role in the Canadian society; and 4) negotiating of gender roles, agency and empowerment. The results of the study indicate that immigration experiences were diverse and should be analyzed through many intersecting lenses including gender, class, social status, and education level to highlight unique challenges experienced by women as opposed to a monolithic representation of women from the East. The study contributes to the literature on South Asian immigrant women by using an interpretation that is based on the knowledge produced by the participants, and by acknowledging their voices as a central focus. Women in this study show that they are agents of change and are not weak and voiceless as depicted through Western discourses.
    • Media Art Other - Episode 3

      Ouellette, Troy (2021-06-09)
      In this third episode, I am pleased to present Sound Artist and Researcher Kevin Curtis-Norcross. Over the course of his career, he has captured forest ecologies in 18 countries over the past 40 years. From Sweden to central and South America and across Canada, Kevin has documented various ecosystems that draw our attention to the real wonders of the world - those being the life forces of insects, animals and plants that populate and continue to negotiate the changing biodiversity in the Anthropocene. Kevin’s recordings are usually done in an acoustically uncontrolled environment (traditionally called the “field”) hence field recording, which presents various challenges even to professional sound artists. In the work of Kevin Curtis-Norcross we get a glimpse of how biodiverse our planet really is because we are following the narrative of the species that make up our surroundings. His acoustic ecology recordings also act as a record of the vanishing sonic environments that have flourished over millennia to be captured in the here and now.
    • A Corrective Feedback Intervention in a Minority French Language School

      Ayotte Irwin, Tracy; Department of Graduate and Undergraduate Studies in Education
      Abstract Educators in French schools in southern Ontario are challenged with the task of increasing their students’ oral linguistic ability in French within their predominantly English-speaking surroundings. Additionally, teachers wonder how they can provide guidance without discouraging students’ efforts and negatively affecting their self-efficacy. The purpose of this study was to examine whether or not corrective feedback (CF) from teachers and peers decreased the number of anglicisms and grammatical errors that students typically make and how an intervention based on CF would affect students’ self-efficacy with respect to their beliefs about their own communication skills. The research was premised on sociocultural and skills acquisition theory. The study employed a convergent mixed methods design that took place in a Grade 3/4 classroom in a French school in southern Ontario for a period of 4 months. Quantitative data were collected from oral communication tests, standardized vocabulary tests, and attitudinal tests. Qualitative data were derived from field notes taken from observations and interviews. The quantitative results indicated that the number of anglicisms and grammatical errors did not diminish significantly but students’ behaviour showed an increased awareness of language form and an increased willingness to improve. Qualitative and quantitative findings suggest that CF did not negatively affect students’ self-efficacy. As well, the findings indicated that students’ self-confidence and pride, their perceptions of improvement, and collaboration skills all increased during the CF intervention. Overall, this research provides implications for practice, research, and theory that can be used to implement effective ways of improving oral communication skills in minority language instruction through CF.
    • Colorectal cancer screening behaviors among South Asian immigrants in Canada: a qualitative study

      Crawford, Joanne; Ahmad, Farah; Beaton, Dorcas E.; Bierman, Arlene S. (Emerald, 2015)
      The purpose of this paper is to gain an in-depth understanding of beliefs, attitudes, and reasons for decision making about colorectal cancer (CRC) screening among South Asian (SA) immigrants. Design/methodology/approach – Six focus groups conducted in English, Punjabi, and Urdu were held with 42 SA immigrants, 50-74 years old and at average risk for CRC, from November 2012 to May 2013. All focus group discussions were audio-taped and transcribed verbatim. Data analysis used an inductive and systematic approach employing constant comparison techniques. Findings – Three dominant themes emerged. Beliefs and attitudes towards cancer and screening represented SA immigrant’s perceptions that early detection was beneficial; screening was not necessary in the absence of symptoms; cancer was scary; and the loss of previously established bowel practices upon immigration as potential risks for CRC. Knowledge and awareness focused on unscreened participants’ cancer stories; screened participants’ knowledge of CRC, risk factors, and screening; experiential learning from focus groups; and screened participants’ strategies to promote screening. Support and accessibility concentrated on physician support and responsibility to provide information, explanation, and recommend screening to facilitate access. Originality/value – Findings provide novel insights on socio-cultural context, beliefs, and barriers to CRC screening among SA immigrants. Culturally appropriate community-based strategies included story-telling, the use of social networks, and greater physician engagement. Enhancing collaborative partnerships with physicians and public health may minimize structural barriers and reduce health disparities. Future research could explore effectiveness of outreach strategies including these collaborations.
    • Sex and education?: Intersecting sex, education, and student activism

      Yap, Iris
      With a focus on the Eurocentric sex education curriculum, this paper reviews three sub-disciplinary geographic literatures – geographies of education, geographies of sexualities, and geographies of children and youth – with a focus on student activism. I propose that although these dissimilar areas of work are relatively sequestered, they share a common connection, children and youth agency. Through a detailed exploration of these three literatures, this study found three things. First, an inclusive sex education curriculum is important as it has the ability to dismantle harmful heteronormative discourses while providing a safe and inclusive environment for marginalized students. Secondly, school’s and education's purposes are contradictory as they have been used as a way to protect children, but also to prepare them for the responsibilities of adulthood. Lastly, although children and youth are often viewed as incapable of making rational and informed decisions by adults, they are active agents in their everyday lives. They, therefore, are capable of creating social and political change. These findings add to the continuing conversations of these three sub-disciplinaries of geography. They also repeat the call for more research into the combination of these three sub-disciplinary fields to dismantle the hegemonic heterosexual norms.
    • Firm Performance and CEO Compensation: CEO Pay Slice vs Pay-Performance Sensitivity

      Hasan, S M Muyeed; Faculty of Business Programs
      I study the relationship between CEO incentive compensation and firm performance in the presence of CEO dominance to examine how incentive compensation improves firm performance by reducing agency conflicts between shareholders and managers. I estimate pay-performance sensitivity (PPS) as a measure of CEO incentive compensation and the CEO pay slice (CPS) as a measure of CEO dominance. Controlling for standard control variables, I conduct multiple OLS regressions and find that at the high level of CPS, PPS improves firm performance, but at the low level of CPS, impact of PPS diminishes. This shows that determining stand-alone associations of PPS or CPS to firm value—a popular practice in the literature—might not be adequate because of an unexplored interaction effect between executive incentive and executive dominance. To address the potential endogeneity issues, I conduct robustness check by employing instrumental variables with a two-stage least square (2SLS) estimation procedure. As an additional robustness check, I account for the year effect and confirm that the results still stand to the same level of significance.
    • Twenty years later: Family’s Continued Battle for Media Coverage of their Missing and Murdered Indigenous Women and Girls

      Shah, Sana; Social Justice and Equity Studies Program
      Past research on media coverage of missing and murdered Indigenous women and girls (MMIWG) has focused mainly on stereotypical images of Indigenous femininity, with limited research on the family’s role and perspectives regarding such coverage. This study examines how family members conceptualise the media coverage of their missing and murdered loved ones, and the family’s role in shifting the dominant media narratives. Drawing on an intersectional feminist framework that pays close attention to decolonization, I reflect on the dominant media discourses about MMIWG. This research focuses on the cases of two Indigenous women – Rosianna Poucachiche, murdered in 2000, and Shannon Alexander, missing since 2008. The primary data was collected through an in-depth interview with a family member of the two young women. Articles were selected from mainstream media platforms, that include, CBC News, The Globe and Mail, Ottawa Citizen, Canada NewsWire and the Montreal Gazette. A qualitative content analysis was conducted to analyse data from the interview and news articles, which produced four main themes: impact of colonialism, police role in addressing MMIWG cases, media’s role and coverage of MMIWG, and the experiences and role of MMIWG families in pushing for media coverage. The findings of this research show that, although stereotyping and insensitive media coverage of MMIWG continues, there has been an identifiable change in media reporting in the past decade as narratives shift to more positive language and empathetic tones. I argue that this has been possible due to ongoing Indigenous family and community activism. The findings further reveal that families and activists have pushed media to not only place a greater emphasis on family narratives, but on issues of systemic and racist oppression as well, to acknowledge how these systems are implicated in the phenomenon of MMIWG. Recommendations from this research suggest that mainstream media platforms need to ensure that the families of MMIWG are not only consulted, but that their narratives be prioritised in public reporting on this issue.
    • Discovery of a novel cytochrome P450, (+)-vincadifformine 19-hydroxylase (V19H), distinguishes separate branch pathways forming aspidosperma-type monoterpenoid indole alkaloids in Catharanthus roseus roots

      Williams, Danielle; Centre for Biotechnology
      Investigation of Catharanthus roseus monoterpenoid indole alkaloid (MIA) biosynthesis and accumulation has been important in elucidating the formation of the antineoplastic drugs, vinblastine and vincristine. These pharmaceuticals are formed by the condensation of the MIAs catharanthine and vindoline, which accumulate in C. roseus leaves. While we had completed and expressed the seven-step pathway from the aspidosperma-type MIA (-)-tabersonine to vindoline in yeast, little was known about the reactions involved in the metabolism of aspidosperma-type MIAs in roots. C. roseus roots convert (-)-tabersonine to lochnericine, the precursor for a major root alkaloid hörhammericine, and the reasons for the production of different aspidosperma MIAs in above and below ground plant organs is unknown. The molecular and biochemical characterization of minovincinine-19-O-acetyltransferase (MAT), tabersonine-19-hydroxylase (T19H), tabersonine-6,7-epoxidase (TEX1/2), and tabersonine 19-O-acetyltransferase (TAT) suggests that biosynthesis of hörhammericine and its derivative, 19-O-acetyl-hörhammericine, involves an ordered series of reactions. Bioinformatic analysis led to the identification of a root specific homolog of tabersonine-3-oxygenase (T3O), a cytochrome P450 (P450) involved in the formation of tabersonine 2,3-epoxides, as part of the vindoline pathway in leaves. Characterization of the T3O-homolog revealed that it converts (+)-vincadifformine to its 19-hydroxyderivative, (+)-minovincinine, and it was named (+)-vincadifformine 19-hydroxylase (V19H). V19H did not accept (-)-tabersonine or tabersonine-derived (-)-vincadifformine. T19H, another root-specific P450, hydroxylates (-)-tabersonine and its derivatives, including (-)-vincadifformine, to their respective 19-hydroxyderivatives, but does not accept (+)-vincadifformine. TAT will only acetylate the (-)-tabersonine derivatives, whereas MAT only turns over the (+)-vincadifformine derivative to form (+)-echitovenine. This shows that two distinct aspidosperma pathways exist in C. roseus since endogenous vincadifformine must be the (+)-enantiomer instead of the tabersonine derived (-)-vincadifformine. Modelling studies revealed that V19H activity is competitively inhibited by (-)-vincadifformine, suggesting that the (-)-aspidosperma backbone could still be incorporated into the binding site, albeit without hydroxylation. Models of T3O and T19H were generated to compare their binding pockets with that of V19H, and there were four conserved residues in T3O and T19H that were missing in V19H. Using site-directed mutagenesis (SDM) of V19H at those four residues, the binding pocket became more T3O-like, and V19H gained T3O-like activity without the loss of V19H activity.
    • Media Art Other - Episode 2

      Ouellette, Troy (2021-06-03)
      In this second episode, I present Curator, Dr. Corinna Ghaznavi. Dr. Corinna Ghaznavi, is an independent curator and freelance writer. Since 1997 she has curated exhibitions across Canada. Her writing has been published in Canadian and European art magazines as well as in numerous exhibition catalogues. In 2011 she completed her PhD, which focused on the question of the animal in contemporary art.
    • Media Art Other - Episode 1

      2021-06-02
      In this first episode, I present Artist and Researcher David Bobier. David has worked in the field of disability art for decades. As a hard-of-hearing and (dis)abled media artist, his creative practice is centred on researching and expanding vibrotactile technology as a creative medium. In 2014 he founded VibraFusion Lab (now renamed Vibrafusion Lab Collective - VFLC) that aims to provide access to inclusive technologies for supporting greater accessibility in the arts. In this podcast, David speaks about his own experiences with (dis)abilities and foregrounds some of the organizations and people he has worked with along the way.
    • An Analysis of Behavioural Interventions for Transition Difficulties of Children and Youth with Developmental Disabilities

      Jichici, Brynn; Center for Applied Disability Studies
      Successfully transitioning from one activity, task, or location to another is an important adaptive skill. For children and youth with developmental disabilities, these transitions can be especially problematic. The purpose of the current study was to systematically examine behavioural studies aimed at improving activity, task, and location transitions for children and youth with developmental disabilities. Four electronic databases (Education Source, Eric, PubMed, and PsycINFO) were searched resulting in 1,439 studies for initial data analyses. Of these studies, 19 met full inclusion criteria and were subjected to additional analyses. Key characteristics of the final sample were described. Existing behavioural treatments incorporated intervention strategies such as visuals, prompting using assisted technology, and video modelling across various settings. Rigour assessments of the final 19 studies resulted in a majority of “weak” quality studies (n =15). Overall, it appears that behavioural interventions may be effective in treating transition difficulties among this population; however, additional research is required.