Digital Commons Network^™

5-Ht2 Receptor Antagonism Reduces Human Motoneuron Output To Antidromic Activation But Not To Stimulation Of Corticospinal Axons, Jacob R. Thorstensen, Janet L. Taylor, Justin J. Kavanagh

Research outputs 2022 to 2026

The intrinsic electrical properties of motoneurons strongly affect motoneuron excitability to fast-acting excitatory ionotropic inputs. Serotonin (5-HT) is a neurochemical that alters the intrinsic properties of motoneurons, whereby animal models and in vitro experiments indicate that 5-HT increases motoneuron excitability by activating 5-HT2 receptors on the somato-dendritic compartment. In the current study, we examined how antagonism of the 5-HT2 receptor affects motoneuron excitability in humans. We hypothesised that motoneuron excitability would be reduced. The 5-HT2 antagonist cyproheptadine was administered to 10 healthy participants in a double-blinded, placebo-controlled, crossover trial. Electrical cervicomedullary stimulation was used to deliver a synchronised excitatory volley …

Epidemiology Of ∆8thc-Related Carcinogenesis In Usa: A Panel Regression And Causal Inferential Study, Albert Stuart Reece, Gary Kenneth Hulse

Research outputs 2022 to 2026

The use of ∆8THC is increasing at present across the USA in association with widespread cannabis legalization and the common notion that it is “legal weed”. As genotoxic actions have been described for many cannabinoids, we studied the cancer epidemiology of ∆8THC. Data on 34 cancer types was from the Centers for Disease Control Atlanta Georgia, substance abuse data from the Substance Abuse and Mental Health Services Administration, ethnicity and income data from the U.S. Census Bureau, and cannabinoid concentration data from the Drug Enforcement Agency, were combined and processed in R. Eight cancers (corpus uteri, liver, gastric cardia, breast …

Injury Surveillance In Community Cricket: A New Inning For South Africa, Benita Olivier, Oluchukwu L. Obiora, Candice Macmillan, Caroline Finch

Research outputs 2022 to 2026

Published injury rates amongst elite and club-level youth cricketers highlight the need to implement injury risk-reducing strategies amongst the youth cricketing population. Data from sports injury surveillance systems are a prerequisite for the development and evaluation of strategies to reduce injury risk. Therefore, collecting injury surveillance data is a positive move towards reducing injuries in cricket. In South Africa, a systematic, standardised, evidence-informed injury surveillance system currently does not exist for community levels of play, namely, in cricket-playing high schools and cricket clubs. Although injury surveillance systems exist at elite levels, the obvious differences in elite versus community cricket settings …

Psychological Distress And Quality Of Life In Asymptomatic Adults Following Provision Of Imaging Results For Prevention Of Cardiovascular Disease Events: A Scoping Review, Reindolf Anokye, Ben Jackson, James Dimmock, Joanne M. Dickson, Lauren C. Blekkenhorst, Jonathan M. Hodgson, Joshua R. Lewis, Mandy Stanley

Research outputs 2022 to 2026

Aims Psychological distress and changes in health-related quality of life (HRQoL) may occur after screening for disease. Reporting outcomes related to potential benefits and harms of screening is a key recommendation in the guidelines for reporting high-quality trials or interventions. However, no reviews have directly investigated outcomes related to psychological distress and/or changes in HRQoL following imaging assessment of cardiovascular risk and communication of cardiovascular findings to asymptomatic adults. A scoping review was conducted to map research on psychological distress and/or HRQoL following screening. Methods and results

Six electronic databases (MEDLINE, PsychINFO, Social Work Abstracts, Psychology and Behavioural Sciences Collection, …

Addressing Filicide In Ghana: Linking Cultural Understanding With The Law Against Filicide. Does The Law Work?, Alhassan Abdullah, Margarita Frederico, Felix Mensah, Hajara Bentum, Yihang Wang, Jennifer Litela Asare

Research outputs 2022 to 2026

Introduction: Consistent with international promulgation on the criminalization of filicide, Ghana’s Children’s Act 1998 (560) and the Criminal Justice Act criminalizes any form of torture against children. Yet, perpetrators of filicide in Ghana may go unpunished due to the beliefs in cultural norms that justify filicide acts. The cultural narratives of filicide can impede on the application and effectiveness of the laws of filicide. Method: The study employed a vignette approach to explore the views of 19 adults, who were parents between 69 years of age and 30 years of age, in rural and urban Ghana on the laws of …

Association Of Immunoglobulin G N-Glycosylation With Carotid Atherosclerotic Plaque Phenotypes And Actual Clinical Cardiovascular Events: A Study Protocol For A Longitudinal Prospective Cohort Study, Cuihong Tian, Gehendra Mahara, Hongxia Zhang, Xuerui Tan

Research outputs 2022 to 2026

Introduction Immune-inflammatory response plays a key role in the pathogenesis of atherosclerosis. IgG N-glycosylation is reported to be associated with the 10-year atherosclerotic cardiovascular disease risk score and subclinical atherosclerosis. However, the relationship of IgG glycosylation with actual clinical cardiovascular disease (CVD) events and plaque phenotypes has rarely been investigated. Therefore, this study aims to understand whether IgG glycosylation traits are correlated with actual clinical CVD events and plaque phenotypes. Methods and analysis Designed to verify the efficacy of IgG glycosylation as a risk for CVD events and screen potential biomarkers of CVD to prevent atherosclerosis occurrence, this longitudinal prospective …

Bioturbation By Echidna (Tachyglossus Aculeatus) In A Forest Habitat, South-Western Australia, Shannon J. Dundas, Lara Osborne, Anna J. M. Hopkins, Katinka X. Ruthrof, Patricia A. Fleming

Research outputs 2022 to 2026

Bioturbation by digging animals is important for key forest ecosystem processes such as soil turnover, decomposition, nutrient cycling, water infiltration, seedling recruitment, and fungal dispersal. Despite their widespread geographic range, little is known about the role of the short-beaked echidna (Tachyglossus aculeatus) in forest ecosystems. We measured the density and size of echidna diggings in the Northern Jarrah Forest, south-western Australia, to quantify the contribution echidna make to soil turnover. We recorded an overall density of 298 echidna diggings per hectare, 21 % of which were estimated to be less than 1 month old. The average size of digs was …

Editorial: Fire Regimes In Desert Ecosystems: Drivers, Impacts And Changes, Eddie J. B. Van Etten, Matthew L. Brooks, Aaron C. Greenville, Glenda M. Wardle

Research outputs 2022 to 2026

Although not commonly associated with fire, many desert ecosystems across the globe do occasionally burn, and there is evidence that fire incidences are increasing, leading to altered fire regimes in this biome. The increased prevalence of megafires (wildfires > 10,000 ha in size and typically damaging) in most global biomes is linked to climate change, although those occurring in deserts have received far less attention, from both a research and policy perspective, than that of forested ecosystems (Linley et al., 2022). Understanding the drivers of desert fires, from climate to landscape patterns of hydrology and soil, and how these may be …

Environmental Health Responses To Covid 19 In Western Australia: Lessons For The Future, Jacques Oosthuizen, Melissa Stoneham, Toni Hannelly, Edmore Masaka, Giverny Dodds, Victor Andrich

Research outputs 2022 to 2026

The COVID-19 pandemic tested the health system of Western Australia (WA) and the relatively new overarching legislative framework that guided the state-wide public health response to the pandemic. This study aimed to evaluate the experiences and roles of environmental health officers (EHOs) in WA during the management of COVID-19 and to identify any policy changes that are needed to facilitate the rapid deployment of EHOs during a future public health crisis. An online survey with 78 respondents was administered and analysis was both qualitative and quantitative. It was found that participants believed there was inadequate resourcing, workforce shortages, increased workloads, …

European Epidemiological Patterns Of Cannabis- And Substance-Related Body Wall Congenital Anomalies: Geospatiotemporal And Causal Inferential Study, Albert Stuart Reece, Gary Kenneth Hulse

Research outputs 2022 to 2026

As body wall congenital anomalies (BWCAs) have a long history of being associated with prenatal or community cannabis exposure (CCE), it was of interest to investigate these epidemiological relationships in Europe given the recent increases in cannabis use prevalence, daily intensity, and Δ9-tetrahydrocannabinol (THC) potency. Methods: This study makes use of BWCA data from Eurocat, drug exposure data from the European Monitoring Centre for Drugs and Drug Addiction, and income from the World Bank. Results: The mapping analysis showed that BWCARs increased in France, Spain, and the Netherlands. The bivariate mapping analysis showed that the BWCA rates (BWCAR) and the …

Indigenous Online Creative Responses To The Covid-19 Pandemic Lockdown In Western Australia, Amy Budrikis, Clint Bracknell

Research outputs 2022 to 2026

In response to the worldwide COVID-19 pandemic in 2020, many communities of endangered Indigenous languages have utilised digital technologies and created online language resources with renewed motivation. In this article we explore the ways that Noongar community members have shifted, adapted and persisted in creating new language revitalisation resources for their endangered Aboriginal language, describing three case studies of video content created and shared online through social media as localised responses to the pressing need for easily produced, accessible and engaging online approaches to support Indigenous communities and their languages.

The Relationship Between Psychedelic Use, Mystical Experiences, And Pro-Environmental Behaviors, Kelly Paterniti, Stephen Bright, Eyal Gringart

Research outputs 2022 to 2026

Expanding on the work of Forstmann and Sagioglou, this study investigated the differences in personality and pro-environmental behavior (PEB) as a function of psychedelic-occasioned mystical experiences. A sample of 240 participants with prior psychedelic experience completed an online survey. Data were collected on participants’ psychedelic-occasioned mystical states, personality, and self-reported PEB. A measure of behavioral PEB was also included (Charity Task). The mean scores on self-reported PEB, openness and agreeableness of participants who met the criteria for a “complete” mystical state, were significantly higher than those who did not. Specifically, those who experienced a mystical state scored higher on the …

Voluntary Activation Of Muscle In Humans: Does Serotonergic Neuromodulation Matter?, Justin J. Kavanagh, Janet L. Taylor

Research outputs 2022 to 2026

Ionotropic inputs to motoneurones have the capacity to depolarise and hyperpolarise the motoneurone, whereas neuromodulatory inputs control the state of excitability of the motoneurone. Intracellular recordings of motoneurones from in vitro and in situ animal preparations have provided extraordinary insight into the mechanisms that underpin how neuromodulators regulate neuronal excitability. However, far fewer studies have attempted to translate the findings from cellular and molecular studies into a human model. In this review, we focus on the role that serotonin (5-HT) plays in muscle activation in humans. 5-HT is a potent regulator of neuronal firing rates, which can influence the force …

Do Personal Values Have An Effect On Self-Esteem In Middle Childhood?, Patricia R. Collins, Joanne Sneddon, Julie Ann Lee

Research outputs 2022 to 2026

Research on children's values (i.e., broad motivational goals) largely focuses on whether their values have a similar theoretical pattern of organization to those of adults, whether they hold similar value priorities to adults or adolescents, and how their values relate to social behavior. However, little is known about how values relate to wellbeing in middle childhood. We examined relations between the values of children aged 6–12 and aspects of their self-esteem, including global self-worth and five domain-specific-competencies. We found global self-worth and physical appearance were positively related to self-transcendence, conservation, and openness-to-change values, and negatively related to self-enhancement values. Social …

Action-Centric Relation Transformer Network For Video Question Answering, Jipeng Zhang, Jie Shao, Rui Cao, Lianli Gao, Xing Xu, Heng Tao Shen

Research Collection School Of Computing and Information Systems

Video question answering (VideoQA) has emerged as a popular research topic in recent years. Enormous efforts have been devoted to developing more effective fusion strategies and better intra-modal feature preparation. To explore these issues further, we identify two key problems. (1) Current works take almost no account of introducing action of interest in video representation. Additionally, there exists insufficient labeling data on where the action of interest is in many datasets. However, questions in VideoQA are usually action-centric. (2) Frame-to-frame relations, which can provide useful temporal attributes (e.g., state transition, action counting), lack relevant research. Based on these observations, we …

Just-In-Time Defect Prediction On Javascript Projects: A Replication Study, Chao Ni, Xin Xia, David Lo, Xiaohu Yang, Ahmed E. Hassan

Research Collection School Of Computing and Information Systems

Change-level defect prediction is widely referred to as just-in-time (JIT) defect prediction since it identifies a defect-inducing change at the check-in time, and researchers have proposed many approaches based on the language-independent change-level features. These approaches can be divided into two types: supervised approaches and unsupervised approaches, and their effectiveness has been verified on Java or C++ projects. However, whether the language-independent change-level features can effectively identify the defects of JavaScript projects is still unknown. Additionally, many researches have confirmed that supervised approaches outperform unsupervised approaches on Java or C++ projects when considering inspection effort. However, whether supervised JIT defect …

Que(E)Rying Femininities: Clarice Lispector’S ‘Correio Feminino’ On Tv Globo, Mariela Méndez

Latin American, Latino and Iberian Studies Faculty Publications

"In 2013, to commemorate its fortieth year anniversary, the popular Brazilian Sunday newsmagazine programme ‘Fantástico’ aired ‘Correio Feminino’ [Ladies’ Mail], a unique adaptation of the columns that Clarice Lispector crafted under the pseudonym Helen Palmer for the newspaper Correio da Manhã between 1959 and 1961. Blogger Mauricio Stycer praised the eight-episode series created by Luiz Fernando Carvalho as ‘surpreendente e ousada’ [surprising and daring]. It was indeed surprising, and daring, for a programme that usually favours ‘hot’ topics, and parades popular music icons like Shakira and Demi Lovato, to pick as one of its commemorative highlights the work of one …

Health Risk Perceptions Regarding Electronic Nicotine Delivery Systems (Ends) Among Individuals With Respiratory Illnes, Sarah Ann Sebban

Theses and Dissertations

Electronic nicotine delivery systems (ENDS), also known as electronic cigarettes, are portable battery-powered devices used to smoke or “vape” a flavored solution which usually contains nicotine. Many national organizations (CDC, AMA, AAFP, ALA, AHA) have recognized the alarmingly increased rates of ENDS use in the United States, especially among certain populations. Those most likely to engage in ENDS use are youth and young adults, and adults who already smoke combustible cigarettes. Many people perceive ENDS use as a healthier alternative to smoking regular cigarettes and thus, are more willing to initiate ENDS use. However, research has indicated that ENDS use …

Fea Modelling And Environmental Assessment Of A Thin-Walled Composite Drive Shaft, Joseph Searle, Maozhou Meng, John Summerscales

School of Engineering, Computing and Mathematics

Fibre reinforced plastics (FRP) composites have been widely used in the automotive industry with the primary focus on reduced mass. However, there are relatively few reports on their application on power transmission components, such as drive shafts. This paper explores the feasibility of replacing the traditional structural steel by light weight FRP composites in a drive shaft. Three FRP composites are considered against a steel drive shaft; basalt/epoxy, carbon/epoxy, and CNT (carbon nanotubes) reinforced carbon/epoxy composites. The mechanical performance was analysed by finite element analysis (FEA) tool and classical laminate theory (CLT), while the environmental performance was evaluated by life …

Embrittlement Failure Of 51crv4 Leaf Springs, Mn James, Dg Hattingh, L Matthews

School of Engineering, Computing and Mathematics

High strength quenched and tempered alloys are used in the manufacture of leaf springs, and peening techniques are used to induce compressive residual stresses on the tension surface of the individual leaves to resist fatigue crack growth. However, the extent of such residual stresses is usually limited to around 0.1–0.2 mm deep. Their beneficial effect can therefore be negated by corrosion pitting, while high strength steels are known to also be susceptible to environmental embrittlement in high chloride environments. This case study deals with an interesting example of environmental embrittlement of multileaf springs reportedly made from 60Si2Mn steel, but actually …

Fundamental Data Analysis Tools And Concepts For Bioacoustical Research, Chandra Salgado Kent, Tiago A. Marques, Danielle Harris

Research outputs 2022 to 2026

Bioacoustics is a growing field of research in which sound is measured to gain knowledge about species’ natural history and their environments. For example, bioacousticians have been able to create phylogenies, identify populations, and estimate abundance using sound. Moreover, today, many animals are exposed to human-generated noise, which can impact animals’ behavior, ability to communicate, physiology, hearing, and, in some instances, survival. Bioacoustics, thus, is commonly used to assess and predict the impacts of anthropogenic noise on animals and their populations. The use of bioacoustics to address such research questions, however, is only effective provided the quantitative and statistical analysis …

Producing Industrial Pigs In Southwestern China: The Rise Of Contract Farming As A Coevolutionary Process, Forrest Qian Zhang, Hongping Zeng

Research Collection School of Social Sciences

The literature on contract farming (CF) has to date focused on how outside capital uses CF to vertically integrate non-capitalist producers into agro-industrial value chains. We argue that in places where multiple dynamics of capitalist growth co-exist, CF relationships can also emerge between different types of capitalist producers that are already in capitalist production using other organizational forms. In this situation, the well-studied drivers that fuel the spread of CF become less consequential; the emergence of CF is instead more contingent on the complex interactions between producers and the specific conditions and events in the local environment. We conceptualize the …

Russian Logics And The Culture Of Impossible: Part Ii: Reinterpreting Algorithmic Rationality, Ksenia Tatarchenko, Anya Yermakova, Liesbeth De Mol

Research Collection School of Social Sciences

This article reinterprets algorithmic rationality by looking at the interaction between mathematical logic, mechanized reasoning, and, later, computing in the Russian Imperial and Soviet contexts to offer a history of the algorithm as a mathematical object bridging the inner and outer worlds, a humanistic vision that we, following logician Vladimir Uspensky, call the “culture of the impossible.” We unfold the deep roots of this vision as embodied in scientific intelligentsia. In Part I, we examine continuities between the turn-of-the-twentieth-century discussions of poznaniye—an epistemic orientation towards the process of knowledge acquisition—and the postwar rise of the Soviet school of mathematical logic. …

Politicians Polarize And Experts Depolarize Public Support For Covid-19 Management Policies Across Countries, A. Flores, J.C. Cole, S. Dickert, Kimin Eom, G.M. Jiga-Boy, T. Kogut, R. Loria, M. Mayorga, E.J. Pedersen, B. Pereira, E. Rubaltelli, D.K. Sherman, P. Slovic, D. Vastfjall, L. Van Boven

Research Collection School of Social Sciences

Political polarization impeded public support for policies to reduce the spread of COVID-19, much as polarization hinders responses to other contemporary challenges. Unlike previous theory and research that focused on the United States, the present research examined the effects of political elite cues and affective polarization on support for policies to manage the COVID-19 pandemic in seven countries (n = 12,955): Brazil, Israel, Italy, South Korea, Sweden, the United Kingdom, and the United States. Across countries, cues from political elites polarized public attitudes toward COVID-19 policies. Liberal and conservative respondents supported policies proposed by ingroup politicians and parties more than …

Old Minds, New Marketplaces: How Evolved Psychological Mechanisms Trigger Mismatched Food Preferences, Michal Folwarczny, Tobias Otterbring, Valdimar Sigurdsson, Lynn K. L. Tan, Norman P. Li

Research Collection School of Social Sciences

Principally due to unhealthy food choices, almost half of adults worldwide are overweight or obese. Current food retail practices bear some responsibility for such public health issues. We argue that numerous attempts to promote healthy eating have been unsuccessful due to the failure to account for our outdated evolved food selection mechanisms. Building on the evolutionary mismatch hypothesis and contrasting ancestral versus present-day foraging environments, we discuss how marketing activities exploit evolutionarily old food preferences and elicit unhealthy food choices for profit maximization at the expense of public health in terms of food consumption. We conclude by explaining how to …

The Effect Of Experience On Semantic Schemata In L2 Teacher Talk, Vahid Rahmani Doqaruni

PASAA

In order to gain a deeper insight into second/foreign language (L2) classroom discourse, teacher talk, as one of the most important aspects of this discourse, needs to be studied from different perspectives. So, the purpose of the present study is to address the association between teachers’ experience and different types of semantic schemata in their talk in L2 classroom contexts. The participants were 12 male EFL teachers who were divided into two equal groups regarding their experience, namely experienced and inexperienced. To collect the required data for this study, the classrooms were observed and audiorecordings were made from one lesson …

Digital Game-Based Learning (Dgbl): The Voice Of Efl University Students And Teachers, Atik Umamah, Ali Saukah

PASAA

Digital games have been integrated into the teaching and learning process along with the immense use of digital games by student gamers. This adoption is to facilitate students with a more interesting and exciting classroom atmosphere. This study was conducted in an attempt to describe the voice of EFL university students regarding the integration of digital game-based learning (DGBL) and to examine the difference in their perception based on gender and interest. Besides, teachers’ voice was explored to better capture the two-sided perspectives. A total of 86 second-year English students responded to an open-ended questionnaire on gamification acceptance. Four English …

A Two-Day Virtual Workshop On The Micronutrient-Directed Nutrition-Focused Physical Exam For Ghanaian Nutrition Professionals: Examining Perceived Self-Efficacy And Innovation, Leah Anne Qubty

UNF Graduate Theses and Dissertations

Micronutrients are key components of various physiological processes. Therefore, in the setting of deficiency, poor health outcomes ensue. In Ghana, micronutrient deficiencies are common and medical resources are limited. The Ghanaian dietetics profession is growing, and this growth is propitiously timed to address micronutrient deficiencies. Biochemical markers of nutrition status are considered the gold standard to detect micronutrient deficiencies, but are costly and require specialized medical equipment. In the absence of available biochemical markers of nutrition status, the micronutrient-directed nutrition-focused physical exam is a viable tool. Nutrition professionals such as Registered Dietitians are qualified to conduct this exam, but feel …

Knowledge, Attitudes And Practices Of Us-Based Registered Dietitians Regarding Vitamin D As A Key Nutrient In Public Health, Karen S. Basedow

UNF Graduate Theses and Dissertations

Abstract

The purpose of this study was to determine the knowledge, attitude and behavior influences of Registered Dietitians (RDNs) regarding Vitamin D (VD). An electronic questionnaire served as the data collection tool developed using previously validated questions and supplemented with behavior construct questions. Content and face validity was assessed by an expert panel; internal consistency was assessed using Cronbach’s Alpha. Scores were assessed for knowledge to determine dietitian awareness and competency about VD, attitudes of RDNs regarding importance and practices around VD, and influences on RDN behavior including by other healthcare providers (HCP). Relationships between scales for knowledge, attitude and …

Identification And Characterization Of The Tssk6 Activating Co-Chaperone (Tsacc) Gene In Skeletal Muscle, Tala Shourbagi Tello

UNF Graduate Theses and Dissertations

Skeletal muscle atrophy is defined as a decrease in muscle size and occurs due to disparate physiological conditions, including aging, immobilization, and corticosteroid exposure. TSSK6 activating co-chaperone (TSACC) was identified as a gene that is significantly upregulated in skeletal muscle in response to denervation. To confirm Tsacc expression in skeletal muscle, the Tsacc cDNA was cloned from cultured myoblast cells leading to the discovery of a novel alternative splice-variant that is 49 amino acids shorter than the known full-length transcript. Quantitative PCR (qPCR) confirmed that Tsacc is expressed in skeletal muscle with expression increasing as muscle cells undergo differentiation. Characterization …