Digital Commons Network^™

Australian Postgraduate Student Experiences And Anticipated Employability: A National Study From The Students’ Perspective, Elizabeth J. Cook, Linda Crane, Shelley Kinash, Amy Bannatyne, Joseph Crawford, Gary Hamlin, Madelaine-Marie Judd, Jo-Anne Kelder, Helen Partridge, Sarah Richardson

Research outputs 2014 to 2021

Postgraduate students are navigating a rapidly evolving landscape for their future careers. In this context, higher education providers are responsible for supporting and monitoring postgraduate (masters and doctoral) students’ development for both education and employability contexts. This empirical research provides a rich analysis of feedback breakfasts, focus groups and interviews with 319 postgraduate student participants from 26 universities. Emergent themes highlight widespread lack of confidence in university-mediated student experiences, particularly in the context of employability, and pessimism regarding career outcomes. Students expressed a view that higher education providers need to direct further attention and relevant supports toward postgraduate education. Future …

Fathers’ Experiences Of Feeding Their Extremely Preterm Infants In Family-Centred Neonatal Intensive Care: A Qualitative Study, Evalotte Mörelius, Sofia Brogren, Sandra Andersson, Siw Alehagen

Research outputs 2014 to 2021

Background:

Extremely preterm infants need advanced intensive care for survival and are usually not discharged before they reach the time of expected birth. In a family-centred neonatal intensive care unit both parents are involved at all levels of care including the feeding process. However, studies focusing on fathers in this situation are scarce. The purpose of this study was to explore the experiences of feeding extremely preterm infants in a neonatal intensive care unit from fathers’ perspectives.

Methods:

The study adopts a qualitative inductive method, reported according to the COREQ checklist. Seven fathers of extremely preterm infants (gestational age 24–27 …

The Effectiveness Of Nurse-Led Interventions To Prevent Childhood And Adolescent Overweight And Obesity: A Systematic Review Of Randomised Trials, Lisa Whitehead, Istvan (Ishti) Kabdebo, Melissa Dunham, Robyn Quinn, Jennifer Hummelshoj, Cobie George, Elizabeth Denney-Wilson

Research outputs 2014 to 2021

Background:

Obesity among children and adolescents continues to rise worldwide. Despite the efforts of the healthcare workforce, limited high-quality evidence has been put forward demonstrating effective childhood obesity interventions. The role of nurses as primary actors in childhood obesity prevention has also been underresearched given the size of the workforce and their growing involvement in chronic disease prevention.

Aim:

To examine the effectiveness of nurse-led interventions to prevent childhood and adolescent overweight and obesity.

Design:

A systematic review of randomised trials.

Data sources:

Medline, CINAHL, EMBASE, Cochrane (CENTRAL), ProQuest Central and SCOPUS were searched from inception to March 2020.

Review …

Dietary Fibre Intervention For Gut Microbiota, Sleep, And Mental Health In Adults With Irritable Bowel Syndrome: A Scoping Review, Ran Yan, Lesley J. Andrew, Evania Marlow, Kanita Kunaratnam, Amanda Devine, Ian C. Dunican, Claus T. Christophersen

Research outputs 2014 to 2021

Irritable bowel syndrome (IBS) is a common functional gastrointestinal disorder affecting 4–5% of the global population. This disorder is associated with gut microbiota, diet, sleep, and mental health. This scoping review therefore aims to map existing research that has administrated fibre-related dietary intervention to IBS individuals and reported outcomes on at least two of the three following themes: gut microbiota, sleep, and mental health. Five digital databases were searched to identify and select papers as per the inclusion and exclusion criteria. Five articles were included in the assessment, where none reported on all three themes or the combination of gut …

Developing A Comprehensive Testing Battery For Mixed Martial Arts, Matthew Plush, Stuart N. Guppy, Kazunori Nosaka, Oliver Barley

Research outputs 2014 to 2021

International Journal of Exercise Science 14(4): 941-961, 2021. Mixed martial arts (MMA) is a combat sport that employs techniques from different combat disciplines. There are a multitude of technical and physiological characteristics that contribute to competitive success. Developing a single scientific assessment that can predict competitive outcomes poses great difficulty due to the complexity of MMA. While previous research has investigated some important physiological characteristics, there is no accepted best-practice for a comprehensive testing battery. As such, this study aimed to design and utilize a battery of physiological assessments to cover aerobic and anaerobic function, strength measures including explosive and …

Evaluation Of Work-Integrated Learning: A Realist Synthesis And Toolkit To Enhance University Evaluative Practices, Elizabeth J. Cook

Research outputs 2014 to 2021

Situated in the context of work-integrated learning (WIL), this paper aims to build the evaluative capacity of universities in response to an increasing need for evaluation in higher education. It contributes a realist synthesis of international peer-reviewed literature on university evaluation of WIL, which revealed no use of evaluation theory or approaches by the authors. In response, to support the enhancement of university evaluative practices, this paper offers a toolkit of evaluation theory and approaches, with examples relating to WIL, featuring an evaluation planning tool (RUFDATAE). RUFDATAE is demonstrated using a study from the realist synthesis, to highlight its relevance, …

Factors Determining Seagrass Blue Carbon Across Bioregions And Geomorphologies, Ines Mazarrasa, Paul Lavery, Carlos M. Duarte, Anna Lafratta, Catherine E. Lovelock, Peter I. Macreadie, Jimena Samper-Villarreal, Cristian Salinas, Christian J. Sanders, Stacey Trevathan-Tackett, Mary Young, Andy Steven, Oscar Serrano

Research outputs 2014 to 2021

Seagrass meadows rank among the most significant organic carbon (C_org) sinks on earth. We examined the variability in seagrass soil C_org stocks and composition across Australia and identified the main drivers of variability, applying a spatially hierarchical approach that incorporates bioregions and geomorphic settings. Top 30 cm soil C_org stocks were similar across bioregions and geomorphic settings (min-max: 20–26 Mg C_org ha⁻¹), but meadows formed by large species (i.e., Amphibolis spp. and Posidonia spp.) showed higher stocks (24–29 Mg C_org ha⁻¹) than those formed by smaller species (e.g., Halodule, Halophila, …

Feasibility And Efficacy Of A Multicomponent Exercise Medicine Programme In Patients With Pancreatic Cancer Undergoing Neoadjuvant Therapy (The Expan Trial): Study Protocol Of A Dual-Centre, Two-Armed Phase I Randomised Controlled Trial, Hao Luo, Daniel A. Galvao, Robert U. Newton, Colin Tang, Andrew Dean, Kevin Jasas, Mikael Johansson, Ian Yusoff, Nigel Spry, Dennis R. Taaffe

Research outputs 2014 to 2021

Introduction Exercise is emerging as a therapy in oncology for its physical and psychosocial benefits and potential effects on chemotherapy tolerability and efficacy. However, evidence from randomised controlled trials (RCTs) supporting exercise in patients with borderline resectable or locally advanced pancreatic cancer (PanCa) undergoing neoadjuvant therapy (NAT) are lacking. Methods and analysis The EXPAN trial is a dual-centre, two-armed, phase I RCT. Forty patients with borderline resectable or locally advanced PanCa undergoing NAT will be randomised equally to an exercise intervention group (individualised exercise+standard NAT) or a usual care control group (standard NAT). The exercise intervention will be supervised and …

Revealing Meaning From Story: The Application Of Narrative Inquiry To Explore The Factors That Influence Decision Making In Relation To The Withdrawal Of Life-Sustaining Treatment In The Intensive Care Unit, Fiona Foxall, Deborah Sundin, Amanda Towell-Barnard Phd, Mnursing, Beverly Ewens, Vivien Kemp, Davina Porock

Research outputs 2014 to 2021

This paper considers the effectiveness of narrative inquiry as a research method in collecting and analyzing stories from a purposive sample of intensive care nurses and doctors, regarding their perceptions of the factors that influence decision-making in relation to the withdrawal of life sustaining treatment. Delaying the withdrawal of treatment when it is clearly indicated, may result in unnecessary patient suffering at the end of life, distress for the family as well as moral distress for staff. In narrative inquiry participants’ first-hand accounts of their experiences are told through story; the focus of analysis is the story, with the story …

Learning Deficit In Cognitively Normal Apoe Ε4 Carriers With Low Β-Amyloid, Yen Ying Lim, Jenalle E. Baker, Andrea Mills, Loren Bruns, Christopher Fowler, Jurgen Fripp, Stephanie R. Rainey-Smith, David Ames, Colin L. Masters, Paul Maruff

Research outputs 2014 to 2021

Introduction: In cognitively normal (CN) adults, increased rates of amyloid beta (Aβ) accumulation can be detected in low Aβ (Aβ–) apolipoprotein E (APOE) ε4 carriers. We aimed to determine the effect of ε4 on the ability to benefit from experience (ie, learn) in Aβ–CNs. Methods: Aβ– CNs(n= 333) underwent episodic memory assessments every 18 months for 108 months. A subset (n = 48) completed the Online Repeatable Cognitive Assessment-Language Learning Test (ORCA-LLT) over 6 days. Results: Aβ– ε4 carriers showed significantly lower rates of improvement on episodic memory over 108 months compared to non-carriers (d = 0.3). Rates of learning …

Data Supporting Development And Validation Of Liquid Chromatography Tandem Mass Spectrometry Method For The Quantitative Determination Of Bile Acids In Feces, Armaghan Shafaei, Joanna Rees, Claus T. Christophersen, Amanda Devine, David Broadhurst, Mary C. Boyce

Research outputs 2014 to 2021

Measuring bile acids in feces has an important role in disease prevention, diagnosis, treatment, and can be considered a measure of health status. Therefore, the primary aim was to develop a sensitive, robust, and high throughput liquid chromatography tandem mass spectrometry method with minimal sample preparation for quantitative determination of bile acids in human feces applicable to large cohorts. Due to the chemical diversity of bile acids, their wide concentration range in feces, and the complexity of feces itself, developing a sensitive and selective analytical method for bile acids is challenging. A simple extraction method using methanol suitable for subsequent …

Drastic Enhancement Of Co2 Adsorption Capacity By Negatively Charged Sub-Bituminous Coal, Hussein R. Abid, Stefan Iglauer, Ahmed Al-Yaseri, Alireza Keshavarz

Research outputs 2014 to 2021

Climate change is a key problem of the 21st century. Climate change is mainly caused by anthropogenic CO₂ emissions, and one solution to this problem is to capture and store CO₂ in deep coal seams, where it is immobilized by adsorption to the coal surface. Here we propose to modify the coal with methyl orange (MO), a typical dye that is also a major pollutant of the hydrosphere and removed thereby. Thus, raw and MO-modified coals were characterized to investigate their thermal stabilities, textural properties, carbon contents, surface characteristics, and CO₂ adsorption on the coal samples was …

Childhood Interpersonal Trauma And Premorbid Social Adjustment As Predictors Of Symptom Remission In First Episode Psychosis, Wenche Ten Velden Hegelstad, Akiah O. Berg, Jone Bjornestad, Kristina Gismervik, Jan O. Johannessen, Ingrid Melle, Helen J. Stain, Inge Joa

Research outputs 2014 to 2021

Background: Childhood interpersonal trauma (CIT) and premorbid adjustment are both associated with poor outcome in psychosis. In this study we investigate the relative impact of CIT and premorbid adjustment on symptom remission in first episode psychosis (FEP) over two years. Method: A total of 232 participants with FEP were recruited through the early detection program of the The early detection and Intervention in Psychosis (TIPS)-2 study and followed up after two years. Symptom remission was according to consensus criteria. CIT was assessed with the semi-structured interview Freyd Goldberg Brief Betrayal Trauma Survey, and premorbid adjustment with the Premorbid Adjustment Scale. …

Deep Ocean Metagenomes Provide Insight Into The Metabolic Architecture Of Bathypelagic Microbial Communities, Silvia G. Acinas, Pablo Sánchez, Guillem Salazar, Francisco M. Cornejo-Castillo, Marta Sebastián, Ramiro Logares, Marta Royo-Llonch, Lucas Paoli, Shinichi Sunagawa, Pascal Hingamp, Hiroyuki Ogata, Gipsi Lima-Mendez, Simon Roux, José M. González, Jesús M. Arrieta, Intikhab S. Alam, Allan Kamau, Chris Bowler, Jeroen Raes, Stéphane Pesant, Peer Bork, Susana Agustí, Takashi Gojobori, Dolors Vaqué, Matthew B. Sullivan, Carlos Pedrós-Alió, Ramon Massana, Carlos M. Duarte, Josep M. Gasol

Research outputs 2014 to 2021

The deep sea, the largest ocean’s compartment, drives planetary-scale biogeochemical cycling. Yet, the functional exploration of its microbial communities lags far behind other environments. Here we analyze 58 metagenomes from tropical and subtropical deep oceans to generate the Malaspina Gene Database. Free-living or particle-attached lifestyles drive functional differences in bathypelagic prokaryotic communities, regardless of their biogeography. Ammonia and CO oxidation pathways are enriched in the free-living microbial communities and dissimilatory nitrate reduction to ammonium and H2 oxidation pathways in the particle-attached, while the Calvin Benson-Bassham cycle is the most prevalent inorganic carbon fixation pathway in both size fractions. Reconstruction of …

Design And Perspective Of Amorphous Metal Nanoparticles From Laser Synthesis And Processing, Shun-Xing Liang, Lai-Chang Zhang, Sven Reichenberger, Stephan Barcikowski

Research outputs 2014 to 2021

Amorphous metal nanoparticles (A-NPs) have aroused great interest in their structural disordering nature and combined downsizing strategies (e.g. nanoscaling), both of which are beneficial for highly strengthened properties compared to their crystalline counterparts. Conventional synthesis strategies easily induce product contamination and/or size limitations, which largely narrow their applications. In recent years, laser ablation in liquid (LAL) and laser fragmentation in liquid (LFL) as "green"and scalable colloid synthesis methodologies have attracted extensive enthusiasm in the production of ultrapure crystalline NPs, while they also show promising potential for the production of A-NPs. Yet, the amorphization in such methods still lacks sufficient rules …

Problems, Policy And Politics – Perspectives Of Public Health Leaders On Food Insecurity And Human Rights In Australia, Stephanie L. Godrich, Liza Barbour, Rebecca Lindberg

Research outputs 2014 to 2021

Background:

To achieve zero hunger targets set within the United Nations’ Agenda 2030, high-income countries such as Australia must reconsider current efforts to improve food security. This study aimed to; explore perspectives from public health nutrition experts on the usefulness of drawing on the international human right to food, and associated mechanisms, to address food insecurity; identify potential roles of key stakeholders in Australia to implement a rights-based approach; and examine barriers and enablers to achieving the right to food in Australia.

Methods:

Qualitative in-depth interviews were conducted with key informants ( > 10 years professional experience). Braun and Clarke’s (2006) …

Prevention Of Dementia Using Mobile Phone Applications (Prodemos): Protocol For An International Randomised Controlled Trial, Esmé Eggink, Melanie Hafdi, Marieke P. Hoevenaar-Blom, Manshu Song, Sandrine Andrieu, Linda E. Barnes, Cindy Birck, Rachael L. Brooks, Nicola Coley, Elizabeth Ford, Jean Georges, Abraham Van Der Groep, Willem A. Van Gool, Ron Handels, Haifeng Hou, Dong Li, Hongmei Liu, Jihui Lyu, Harm Van Marwijk, Mark Van Der Meijden, Yixuan Niu, Shanu Sadhwani, Wenzhi Wang, Youxin Wang, Anders Wimo, Xiaoyan Ye, Yueyi Yu, Qiang Zeng, Wei Wang, Carol Brayne, Eric P. Moll Van Charante, Edo Richard

Research outputs 2014 to 2021

Introduction Profiles of high risk for future dementia are well understood and are likely to concern mostly those in low-income and middle-income countries and people at greater disadvantage in high-income countries. Approximately 30%-40% of dementia cases have been estimated to be attributed to modifiable risk factors, including hypertension, smoking and sedentary lifestyle. Tailored interventions targeting these risk factors can potentially prevent or delay the onset of dementia. Mobile health (mHealth) improves accessibility of such prevention strategies in hard-to-reach populations while at the same time tailoring such approaches. In the current study, we will investigate the effectiveness and implementation of a …

Exploring The Relationship Between Microdosing, Personality And Emotional Insight: A Prospective Study, Hannah M. Dressler, Stephen J. Bright, Vince Polito

Research outputs 2014 to 2021

Backround and aims: Having entered the recent public and research zeitgeist, microdosing involves consuming sub-perceptual doses of psychedelic drugs, allegedly to enhance performance, creativity, and wellbeing. The results of research to date have been mixed. Whereas most studies have reported positive impacts of microdosing, some microdosers have also reported adverse effects. In addition, research to date has revealed inconsistent patterns of change in personality traits. This prospective study explored the relationship between microdosing, personality change, and emotional awareness. Methods: Measures of personality and alexithymia were collected at two time points. 76 microdosers participated at baseline. Invitations to a follow-up survey …

Students Pay The Price: Doctoral Candidates Are Targeted By Contract Cheating Websites, Andrew Kelly, Kylie J. Stevenson

Research outputs 2014 to 2021

Aim/Purpose This paper analyses the textual features of contract cheating websites that offer thesis writing services for doctoral students and considers implications for practice. Background Contract cheating is an increasing challenge for higher education institutions, governments and societies worldwide. However, relatively little is known about the prevalence of online thesis writing services and the ways in which these companies attract doctoral students as customers. Methodology This study has a three-step textual analysis methodological approach: firstly, identifying contract cheating websites that target doctoral students; secondly, applying a top-down thematic approach to the literature to identify potential vulnerabilities; and, thirdly, using these …

Fifteen Years Of The Australian Imaging, Biomarkers And Lifestyle (Aibl) Study: Progress And Observations From 2,359 Older Adults Spanning The Spectrum From Cognitive Normality To Alzheimer's Disease, Christopher Fowler, Stephanie R. Rainey-Smith, Sabine Bird, Julia Bomke, Pierrick Bourgeat, Belinda M. Brown, Samantha C. Burnham, Ashley I. Bush, Carolyn Chadunow, Steven Collins, James Doecke, Vincent Doré, Kathryn A. Ellis, Lis Evered, Amir Fazlollahi, Jurgen Fripp, Samantha L. Gardener, Simon Gibson, Robert Grenfell, Elise Harrison, Richard Head, Liang Jin, Adrian Kamer, Fiona Lamb, Nicola T. Lautenschlager, Simon M. Laws, Qiao-Xin Li, Lucy Lim, Yen Ying Lim, Andrea Louey, S. Lance Macaulay, Lucy Mackintosh, Ralph N. Martins, Paul Maruff, Colin L. Masters, Simon Mcbride, Lidija Milicica, Madeline Peretti, Kelly Pertile, Tenielle Porter, Morgan Radler, Alan Rembach, Joanne Robertson, Mark Rodrigues, Christopher C. Rowe, Rebecca Rumble, Olivier Salvado, Greg Savage, Brendan Silbert, Magdalene Soh, Hamid R. Sohrabi, Kevin Taddei, Tania Taddei, Christine Thai, Brett Trounson, Regan Tyrrell, Michael Vacher, Shiji Varghese, Victor L. Villemagne, Michael Weinborn, Michael Woodward, Ying Xia, David Ames, Aibl Investigators

Research outputs 2014 to 2021

Background: The Australian Imaging, Biomarkers and Lifestyle (AIBL) Study commenced in 2006 as a prospective study of 1,112 individuals (768 cognitively normal (CN), 133 with mild cognitive impairment (MCI), and 211 with Alzheimer's disease dementia (AD)) as an 'Inception cohort' who underwent detailed ssessments every 18 months. Over the past decade, an additional 1247 subjects have been added as an 'Enrichment cohort' (as of 10 April 2019). Objective: Here we provide an overview of these Inception and Enrichment cohorts of more than 8,500 person-years of investigation. Methods: Participants underwent reassessment every 18 months including comprehensive cognitive testing, neuroimaging (magnetic resonance …

Causal Inference Between Chronic Periodontitis And Chronic Kidney Disease: A Bidirectional Mendelian Randomization Analysis In A European Population, Jie Yang, Tianyi Chen, Yahong Zhu, Mingxia Bai, Xingang Li

Research outputs 2014 to 2021

Background: Previous epidemiological studies have shown significant associations between chronic periodontitis (CP) and chronic kidney disease (CKD), but the causal relationship remains uncertain. Aiming to examine the causal relationship between these two diseases, we conducted a bidirectional two-sample Mendelian randomization (MR) analysis with multiple MR methods. Methods: For the casual effect of CP on CKD, we selected seven single-nucleotide polymorphisms (SNPs) specific to CP as genetic instrumental variables from the genome-wide association studies (GWAS) in the GLIDE Consortium. The summary statistics of complementary kidney function measures, i.e., estimated glomerular filtration rate (eGFR) and blood urea nitrogen (BUN), were derived from …

Evolution, Ecology, And Zoonotic Transmission Of Betacoronaviruses: A Review, Herbert F. Jelinek, Mira Mousa, Eman Alefishat, Wael Osman, Ian Spence, Dengpan Bu, Samuel F. Feng, Jason Byrd, Paola A. Magni, Shafi Sahibzada, Guan K. Tay, Habiba S. Alsafar

Research outputs 2014 to 2021

Coronavirus infections have been a part of the animal kingdom for millennia. The difference emerging in the twenty-first century is that a greater number of novel coronaviruses are being discovered primarily due to more advanced technology and that a greater number can be transmitted to humans, either directly or via an intermediate host. This has a range of effects from annual infections that are mild to full-blown pandemics. This review compares the zoonotic potential and relationship between MERS, SARS-CoV, and SARS-CoV-2. The role of bats as possible host species and possible intermediate hosts including pangolins, civets, mink, birds, and other …

Physical Activity And Self-Reported Metabolic Syndrome Risk Factors In The Aboriginal Population In Perth, Australia, Measured Using An Adaptation Of The Global Physical Activity Questionnaire (Gpaq), Tuguy Esgin, Deborah Hersh, Kevin G. Rowley, Rona Macniven, Kristen Glenister, Alan Crouch, Robert U. Newton

Research outputs 2014 to 2021

Background: Complex, ongoing social factors have led to a context where metabolic syndrome (MetS) is disproportionately high in Aboriginal Australians. MetS is characterised by insulin resistance, abdominal obesity, hypertension, hypertriglyceridemia, high blood-sugar and low HDL-C. This descriptive study aimed to document physical activity levels, including domains and intensity and sedentary behaviour, and MetS risk factors in the Perth Aboriginal (predominately Noongar) community. Methods: The Global Physical Activity Questionnaire (GPAQ), together with a questionnaire on self-reported MetS risk factors, was circulated to community members for completion during 2014 (n = 129). Results: Data were analysed using chi-squared tests. The average (SD) …

Aquatic Ecosystems Of The Anthropocene: Limnology And Microbial Ecology Of Mine Pit Lakes, Melanie L. Blanchette, Mark A. Lund

Research outputs 2014 to 2021

Mine pit lakes (‘pit lakes’) are new aquatic ecosystems of the Anthropocene. Potentially hundreds of meters deep, these lakes are prominent in the landscape and in the public consciousness. However, the ecology of pit lakes is underrepresented in the literature. The broad goal of this research was to determine the environmental drivers of pelagic microbe assemblages in Australian coal pit lakes. The overall experimental design was four lakes sampled three times, top and bottom, in 2019. Instrument chains were installed in lakes and measurements of in situ water quality and water samples for metals, metalloids, nutrients and microbe assemblage were …

Wellbeing Of Breastfeeding Women In Australia And New Zealand During The Covid‐19 Pandemic: A Cross‐Sectional Study, Vanessa S. Sakalidis, Alethea Rea, Sharon L. Perrella, Jacki Mceachran, Grace Collis, Jennifer Miraudo, Stuart A. Prosser, Lisa Y. Gibson, Desiree Silva, Donna T. Geddes

Research outputs 2014 to 2021

During the COVID‐19 pandemic, breastfeeding women have experienced restricted access to support, placing them at increased risk of mental health concerns and limited breastfeeding assistance. This study investigated the effect of the pandemic on feeding choices and maternal well-being amongst breastfeeding mothers living in Australian and New Zealand. We conducted a cross-sectional online survey that examined feeding methods, maternal mental wellbeing, worries, challenges, and positive experiences during the pandemic. Most women were exclusively breastfeeding (82%). Partial breastfeeding was associated with perceived low milk supply and longer pregnancy duration during the pandemic. Reduced mental health and wellbeing was associated with lower …

Rgb-D Data-Based Action Recognition: A Review, Muhammad Bilal Shaikh, Douglas Chai

Research outputs 2014 to 2021

Classification of human actions is an ongoing research problem in computer vision. This review is aimed to scope current literature on data fusion and action recognition techniques and to identify gaps and future research direction. Success in producing cost-effective and portable vision-based sensors has dramatically increased the number and size of datasets. The increase in the number of action recognition datasets intersects with advances in deep learning architectures and computational support, both of which offer significant research opportunities. Naturally, each action-data modality—such as RGB, depth, skeleton, and infrared (IR)—has distinct characteristics; therefore, it is important to exploit the value of …

Validity And Test-Retest Reliability Of The Jumpo App For Jump Performance Measurement, Amilton Vieira, Anthony J. Blazevich, Alexandre Souza Da Costa, James J. Tufano, Martim Bottaro

Research outputs 2014 to 2021

International Journal of Exercise Science 14(7): 677-686, 2021. The vertical jump test is one of the simplest and most prevalent physical tests used in practice and research. This study investigated the validity and reliability of a new mobile application (Jumpo) for measuring jump performance on Android devices. University-aged students (n = 10; 20 ± 3 years; 176 ± 6 cm; 68 ± 9 kg) reported to the laboratory on three occasions (2-7 days apart): to be familiarized with the jump performance measurements and then for test-retest reliability assessments. Participants performed countermovement jumps (CMJ), squat jumps (SJ), and right and left …

Corrosion Behavior And Characteristics Of Passive Films Of Laser Powder Bed Fusion Produced Ti-6al-4v In Dynamic Hank’S Solution, Liang-Yu Chen, Hong-Yue Zhang, Chuanbo Zheng, Hong-Yu Yang, Peng Qin, Cuihua Zhao, Sheng Lu, Shun-Xing Liang, Linjiang Chai, Lai-Chang Zhang

Research outputs 2014 to 2021

The corrosion behavior of laser powder bed fusion produced (L-PBF-produced) titanium alloys involving flowing body fluid is still unclear. Therefore, this work investigates in vitro corrosion behavior and the characteristics of passive films formed on L-PBF-produced Ti–6Al–4V in both static and dynamic Hank’s solutions. Electrochemical measurements, immersion tests, X-ray photoelectron spectroscopy and scanning electron microscopy were conducted. In comparison to the L-PBF-produced Ti–6Al–4V in static Hank’s solution, the samples showed lower charge transfer resistance and higher passivation current density (anodic current density as well) in dynamic Hank’s solution. Meanwhile, a more apparent deposition of apatite and hydroxyapatite is found on …

Exploring The Key Challenges Facing Company Secretaries In A Two-Tier Board Context, Stefan Peij, Pieter-Jan Bezemer

Research outputs 2014 to 2021

Purpose: This study aims to examine the core challenges facing company secretaries in a two-tier board context. This study focuses on the key factors contributing to these challenges and how company secretaries can effectively address them.

Design/methodology/approach: An analysis of the narratives provided by 291 Dutch company secretaries in response to a series of open-ended questionnaire questions led to insights into the key challenges company secretaries face in their day-to-day work.

Findings: Company secretaries perceive a myriad of factors contributing to pressures on their time, the need to work for multiple organizational bodies and the processing of information. They believe …

The Effect Of Tin-, Ticn-, Tialn-, And Tisin Coated Tools On The Surface Defects And Geometric Tolerances Of Holes In Multi-Spindle Drilling Of Al2024 Alloy, Muhammad Aamir, Adrian Davis, William Keeble, Ugur Koklu, Khaled Giasin, Ana Vafadar, Majid Tolouei Rad

Research outputs 2014 to 2021

The integrity of machined holes depends on many parameters, some of which are related to the cutting tool (geometry, coating, material). Other influential parameters are related to the machining process variables (spindle speed, feed rate, workpiece material), all of which can affect the quality of the hole and drilling induced damage on its surface. This study investigates the effect of uncoated tools and four types of tool coatings (TiN-, TiCN-, TiAlN-, and TiSiN) on the hole quality and its microstructure. The study analyzed several hole geometrical metrics, namely hole size, circularity, cylindricity, and perpendicularity of an Al2024 aluminum alloy using …