A performance evaluation of public cloud using TPC-C
- Authors: Yao, Jinhui , Ng, Alex , Chen, Shiping , Liu, Dongxi , Friedrich, Carsten , Nepal, Surya
- Date: 2012
- Type: Text , Conference paper
- Relation: Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics) 2012 International Conference on Service-Oriented Computing, ICSOC 2012; Shanghai; China; 12 November 2012 through 15 November 2012 Vol. 7759 LNCS, p. 3-13
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- Description: Cloud is becoming the next-generation computing paradigm for enterprises to deploy services and run business. While most Cloud service providers promise some Quality of Service (QoS) through a Service Level Agreement (SLA), it is very hard for Cloud clients to know what impacts these QoS have on their businesses. In this paper, we study this issue by conducting a simple performance evaluation of two public Clouds. We selected TPC-C to benchmark three types of instances (Small, Medium and Large) provided by the Cloud providers in order to find out how the typical online transaction process systems perform on the cloud nodes. Our testing results show that the different Cloud environments deliver very different performance landscapes with different Cloud instances. Our work demonstrates the importance and opportunity to choose the appropriate Cloud instance in achieving an optimal cost-performance ratio for a class of cloud applications. © Springer-Verlag 2013.
Activation of self-focus and self-presentation traits under private, mixed, and public pressure
- Authors: Geukes, Katharina , Mesagno, Christopher , Hanrahan, Stephanie , Kellmann, Michael
- Date: 2013
- Type: Text , Journal article
- Relation: Journal of Sport and Exercise Psychology Vol. 35, no. 1 (2013), p. 50-59
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- Description: Trait activation theorists suggest that situational demands activate traits in (pressure) situations. In a comparison of situational demands of private (monetary incentive, cover story), mixed (monetary incentive, small audience), and public (large audience, video taping) high-pressure situations, we hypothesized that situational demands of private and mixed high-pressure conditions would activate self-focus traits and those of a public high-pressure condition would activate self-presentation traits. Female handball players (N = 120) completed personality questionnaires and then performed a throwing task in a low-pressure condition and one of three high-pressure conditions (n = 40). Increased anxiety levels from low to high pressure indicated successful pressure manipulations. A self-focus trait negatively predicted performance in private and mixed high-pressure conditions, and self-presentation traits positively predicted performance in the public high-pressure condition. Thus, pressure situations differed in their trait-activating situational demands. Experimental research investigating the trait-performance relationship should therefore use simulations of real competitions over laboratory-based scenarios. © 2013 Human Kinetics, Inc.
- Description: 2003010828
Acute effects of static stretching on hip flexor and quadriceps flexibility, range of motion and foot speed in kicking a football
- Authors: Young, Warren , Clothier, Peter , Otago, Leonie , Bruce, Lyndell , Liddell, David
- Date: 2004
- Type: Text , Journal article
- Relation: Journal of Science and Medicine in Sport Vol. 7, no. 1 (Mar 2004), p. 23-31
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- Description: The purpose of this research was to determine the effect of static stretching in a warm-up on hip flexor and quadriceps flexibility as measured by a modified Thomas test and on range of motion (ROM) of the leg and foot speed at impact in kicking a football with maximum effort. Sixteen Australian Rules (AR) footballers performed two different warm-ups on different days. One warm-up involved five minutes of sub-maximum running followed by seven practice kicks, while the other also included 4.5 minutes static stretching of the hip flexors and quadriceps after the running. A modified Thomas test was conduced before and after each warm-up. Players performed maximum effort drop punt kicks into a net while being videotaped to determine the ROM of the kicking leg and foot speed at impact with the ball. There were no significant changes in flexibility (p>0.05) as a result of either warm-up and there were no significant differences between the warm-ups in the kicking variables (p>0.05). It was concluded that the Thomas test may not have been sensitive to possible acute changes in flexibility from the warm-ups, and that stretching had no influence on kicking ROM or foot speed, possibly because of the complexity of the kicking skill.
- Description: C1
- Description: 2003000977
An investigation into handedness and choking under pressure in sport
- Authors: Mesagno, Christopher , Garvey, Jacob , Tibbert, Stephanie , Gröpel, Peter
- Date: 2019
- Type: Text , Journal article
- Relation: Research Quarterly for Exercise and Sport Vol. 90, no. 2 (2019), p. 217-226
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- Description: When athletes fail to perform at an expected level during an important moment, it is implied the athletes have experienced “choking“ (sudden decline in performance) under pressure.”. Researchers have reported that persistent left-hemispheric activation patterns occur when an athlete experiences considerable performance deteriorations under pressure. Researchers have also observed differences in brain activation patterns between left- and right-handed people on a variety of physical and cognitive tests, with the left-hemispheric activation more pronounced in right-handed participants. Purpose: The purpose of this study was to investigate whether athletes’ handedness may be linked to choking susceptibility (i.e., likelihood to experience performance decline under pressure). Method: Twenty right-handed and 13 left-handed experienced Australian football players completed 15 shot attempts, in both a low-pressure and a high-pressure condition. Both groups displayed equal state anxiety increases due to the pressure manipulation, indicating similar increases in anxiety in both handedness groups. Results: Differences were indicated in performance between the left- and right-handed groups during the high-pressure condition, with the left-handed group maintaining, and the right-handed participants declining, performance. Conclusion: Future electroencephalogram (EEG) research investigating this link may clarify the effect between handedness and choking.
An investigation of expertise in cycling : eye tracking, think aloud and the influence of a competitor
- Authors: Massey, Hollie , Whitehead, Amy , Marchant, David , Polman, Remco , Williams, Emily
- Date: 2020
- Type: Text , Journal article
- Relation: Psychology of Sport and Exercise Vol. 49, no. (2020), p.
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- Description: Objectives: Two studies investigated expert-novice differences in information-seeking behaviour, cognitions and performance during cycling time trials (TT). Study 1 examined trained and novice cyclist's cognitions whilst performing a TT, using a Think Aloud (TA) protocol and eye-tracking techniques. Study 2 investigated expertise differences during alone and competitive TTs. Methods: in Study 1, six trained and seven novice cyclists performed a 16.1 km TT. In Study 2, eight trained and ten novice cyclists performed three 16.1 km TT; a baseline TT, an alone TT and a trial against a virtual competitor. In both studies, participants were asked to TA and in Study 1 they also wore mobile gaze-tracking glasses. Performance feedback and a simulated TT course were visually displayed during all trials, as was a virtual avatar during the competitor trial. Verbalisations were coded into primary and secondary themes. Cognitions and pacing strategies were compared between groups and across the duration of the TTs. In Study 1, eye-tracking data for total dwell time and gaze frequency were calculated for each area of interest (Time Elapsed, Power, Heart Rate, Cadence, Distance Covered, Speed and Course Scenery). Results: In Study 1, no significant differences were found in information-seeking behaviour between groups, however there were expertise differences in the cognitive strategies used. Trained cyclists’ verbalisations were more performance-relevant (i.e., power output), whereas the untrained group were more focused on task completion (i.e., distance and time) and irrelevant information. Both groups talked more about distance and motivational thoughts in the later stages of the trial, and dwell time on distance feedback also increased in this final 4 km. In Study 2, the trained group performed faster than the untrained group but there were no significant differences in pace or performance between alone and competitive TTs for either group. Differences in cognitions were found between groups and across the TT duration. Conclusion: Both studies demonstrate that cognitive processes differ as a function of expertise during self-paced cycling time trials. There were no differences in information-seeking behaviour between trained and untrained cyclists and there was no effect of an opponent on pace or performance. © 2020
Anxiety, flipped approach and self-efficacy : exploring nursing student outcomes
- Authors: Croy, Glen , Garvey, Loretta , Willetts, Georgina , Wheelahan, Jamie , Hood, Kerry
- Date: 2020
- Type: Text , Journal article
- Relation: Nurse Education Today Vol. 93, no. (2020), p.
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- Description: Background: Self-efficacy is crucial for student success. Studies have demonstrated a positive relationship between flipped learning approach and self-efficacy. Anxiety, however, can reduce self-efficacy. Objective: Testing the relationship between the flipped approach and self-efficacy by flipping a nursing module within an externally-imposed and once-off anxiety-inducing context. Method: Students completed a self-efficacy survey before (n = 71) and after (n = 91) a compressed semester, which provided the anxiety-inducing context. Results: Pre-semester self-efficacy was 2.93/4, and post-semester was 2.98/4. The results demonstrated no significant change in students' self-efficacy. Conclusion: We argue the flipped approach counters anxiety-inducing effects to maintain self-efficacy. In less anxiety-inducing contexts, we argue the flipped approach would develop students' confidence, capability, persistence and strength beliefs, collectively enhancing self-efficacy perceptions. © 2020 Elsevier Ltd
Artificial neural network modeling and sensitivity analysis of performance and emissions in a compression ignition engine using biodiesel fuel
- Authors: Jaliliantabar, Farzad , Ghobadian, Barat , Najafi, Gholamhassan , Yusaf, Talal
- Date: 2018
- Type: Text , Journal article
- Relation: Energies Vol. 11, no. 9 (2018), p. 1-24
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- Description: In the present research work, a neural network model has been developed to predict the exhaust emissions and performance of a compression ignition engine. The significance and novelty of the work, with respect to existing literature, is the application of sensitivity analysis and an artificial neural network (ANN) simultaneously in order to predict the engine parameters. The inputs of the model were engine load (0, 25, 50, 75 and 100%), engine speed (1700, 2100, 2500 and 2900 rpm) and the percent of biodiesel fuel derived from waste cooking oil in diesel fuel (B0, B5, B10, B15 and B20). The relationship between the input parameters and engine cylinder performance and emissions can be determined by the network. The global sensitivity analysis results show that all the investigated factors are effective on the created model and cannot be ignored. In addition, it is found that the most emissions decreased while using biodiesel fuel in the compression ignition engine.
Assessing healthcare providers' performance with and without risk adjustment
- Authors: Morales-Silva, Daniel
- Date: 2018
- Type: Text , Thesis , PhD
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- Description: This study focuses on how healthcare data can be used to draw comparisons between healthcare providers (surgeons or hospitals). Depending on the type of access to datasets, these comparisons can be done with or without risk adjustment. For us, risk adjustment refers to the use of patient-level information to explain variation in healthcare spending, resource utilisation and health outcomes. For unadjusted comparisons, we highlight the diagnostic potential that radar plots offer for reporting on outcome indicators. These outcome indicators were obtained from hospital admissions of patients undergoing certain surgical procedures. We address two drawbacks of radar plots: presence of missing information and order of indicators. By introducing a consolidated view at provider level, we define an uncomplicated ranking of providers which can be used to identify potential low and high performers. For risk adjusted comparisons, we introduce a novel and robust methodology that enables comparisons of healthcare providers across multiple hierarchies, namely, surgeons, teams, departments and hospitals, using a consistent approach. Our methodology puts the patient at the centre of the analysis, and thus, can be used for personalised predictions (e.g. expected length of stay, costs and probability of being transferred to intensive care unit). Our findings suggest that the observed variation in selected outcome indicators, such as length of stay and charges of healthcare providers, cannot be explained by patient characteristics alone. Importantly, we have also observed that the perceived performance, on selected outcome indicators, of providers can change substantially following risk adjustment. Healthcare is unique in that clinical expertise is essential in guiding decision making and in informing all statistical models that seek to describe patient outcomes. For future iterations of our models, we will seek greater clinical input.
- Description: Doctor of Philosophy
Barley (1 -> 3; 1 -> 4)-beta-glucan and arabinoxylan content are related to kernel hardness and water uptake
- Authors: Gamlath, Jayantha , Aldred, Peter , Panozzo, Joe
- Date: 2008
- Type: Text , Journal article
- Relation: Journal of Cereal Science Vol. 47, no. 2 (Mar 2008), p. 365-371
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- Description: Harder kernels in barley are thought to be a factor affecting the modification of the endosperm during malting by restricting water and enzyme movement within the endosperm. The objective of this study was to investigate the relationship between kernel hardness, water uptake and the endosperm composition in barley. A range of barley samples from 2003 and 2004 crops were analyzed for kernel hardness by the Single Kernel Characterization System, water uptake during steeping and chemical composition of the endosperm including (1→3; 1→4)-
- Description: C1
Caffeine, carbohydrate, and cooling use during prolonged simulated tennis
- Authors: Hornery, Daniel , Mujika, Inigo , Young, Warren , Farrow, Damian
- Date: 2007
- Type: Text , Journal article
- Relation: International Journal of Sports Physiology and Performance Vol. 2, no. 4 (2007), p. 423-438
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- Description: Purpose: To determine the effects of prolonged simulated tennis on performance and the ergogenic potential of caffeine, carbohydrates, and cooling. Methods: Twelve highly trained male tennis players (age 18.3 ± 3.0 y, height 178.8 ± 8.5 cm, body mass 73.95 ± 12.30 kg, mean ± SD) performed 4 simulated matches (2 h 40 min) against a ball machine on an indoor hard court. The counterbalanced experimental trials involved caffeine supplementation (3 mg/kg), carbohydrate supplementation (6% solution), precooling and intermittent cooling, and placebo control. Physiological markers (core temperature, heart rate, blood lactate, and blood glucose), subjective responses (ratings of perceived exertion and thermal sensation), stroke velocity and accuracy, serve kinematics, and tennis-specific perceptual skill quantified the efficacy of interventions. Results: Significant effects of time (P < .01) reflected increased physiological demand, reduced serve velocity and ground-stroke velocity and accuracy, and a slowing of the serve racket-arm acceleration phase. Caffeine increased serve velocity (165 ± 15 km/h) in the final set of the match (P = .014) compared with placebo (159 ± 15 km/h, P = .008) and carbohydrate (158 ± 13 km/h, P = .001) conditions. Carbohydrate and cooling conditions afforded physiological advantage (increased blood glucose, P < .01, and reduced preexercise thermal sensation, P < .01) but did not affect performance relative to the placebo condition. Conclusions: Prolonged simulated tennis induced significant decrements in tennis skills. Caffeine supplementation partly attenuated the effects of fatigue and increased serve velocity. In contrast, carbohydrate and cooling strategies had little ergogenic effect on tennis performance.
- Description: C1
- Description: 2003005648
Characteristics of Polar Opposites : An Exploratory Investigation of Choking-Resistant and Choking-Susceptible Athletes
- Authors: Mesagno, Christopher , Marchant, Daryl
- Date: 2013
- Type: Text , Journal article
- Relation: Journal of Applied Sport Psychology Vol. 25, no. 1 (2013), p. 72-91
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- Description: The current research provides an assessment of performance under pressure by deliberately investigating responses of athletes who are polar opposite. Forty-six female netball players were screened to sample choking-resistant and choking-susceptible athletes. The eight selected participants then completed 180 netball shots in a single-case A1-B-A2 design (A phases = low-pressure and B phase = high-pressure), with follow-up interviews. Under pressure, choking-resistant participants improved their performance by using task-focus and avoidance-cognitive coping, whereas choking-susceptible participants suffered from performance decrements often applying emotion-focused and approach-cognitive coping. Researchers should further explore the unique characteristics of choking-resistant athletes. © 2013 Copyright Taylor and Francis Group, LLC.
- Description: 2003010585
Coaches' perspectives on implementing an evidence-informed injury prevention programme in junior community netball
- Authors: Saunders, Natalie , Otago, Leonie , Romiti, Maria , Donaldson, Alex , White, Peta , Finch, Caroline
- Date: 2010
- Type: Text , Journal article
- Relation: British Journal of Sports Medicine Vol. 44, no. 15 (2010), p. 1128-1132
- Relation: http://purl.org/au-research/grants/nhmrc/565900
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- Description: Objective For effective sports injury prevention, information is needed about the implementation context for interventions. This study describes coaches' feedback on the implementation of an evidence-informed injury prevention programme in community junior netball using coaches' perceptions and the RE–AIM framework. Methods A lower-limb injury prevention programme (Down to Earth; D2E), for teaching safe-landing techniques, was delivered to 31 coaches from 31 junior community netball teams in a 1-h workshop. Coaches then delivered a 6-week programme at team training sessions starting in the week before the competition season commenced. 65% of coaches completed a feedback survey 17 weeks after they had delivered the programme. Results Most (88%) coaches believed that D2E improved their players' ability to perform correct landing techniques in games and that players had retained these improvements over the season. The majority (83%) indicated that an improvement in player athletic attributes was the greatest advantage of D2E, followed by a reduction in injury risk. Identified barriers to implementing D2E were running out of time and very young players finding the drills too difficult. Coaches reported that they needed more ideas for training drills that could be incorporated into their programmes and believed that their own coaching training did not adequately prepare them to implement an injury prevention programme. Conclusions Although coaches believed that D2E was effective in developing correct landing techniques, some modifications are needed to make it more suitable for younger players and coach education by accreditation courses could be improved to support the implementation of injury prevention programmes.
Comparison of thoracic and lumbar erector spinae muscle activation before and after a golf practice session
- Authors: Sorbie, Graeme , Grace, Fergal , Gu, Yaodong , Baker, Julien , Ugbolue, Ukadike
- Date: 2017
- Type: Text , Journal article
- Relation: Journal of Applied Biomechanics Vol. 33, no. 4 (2017), p. 288-293
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- Description: Lower back pain is commonly associated with golfers. The study aimed: to determine whether thoracic- and lumbar-erector-spinae muscle display signs of muscular fatigue after completing a golf practice session, and to examine the effect of the completed practice session on club head speed, ball speed and absolute carry distance performance variables. Fourteen right-handed male golfers participated in the laboratory-based-study. Surface electromyography (EMG) data was collected from the lead and trail sides of the thoracic- and lumbar-erector-spinae muscle. Normalized root mean squared (RMS) EMG activation levels and performance variables for the golf swings were compared before and after the session. Fatigue was assessed using median frequency (MDF) and RMS during the maximum voluntary contraction (MVC) performed before and after the session. No significant differences were observed in RMS thoracic- and lumbar-erector-spinae muscle activation levels during the five phases of the golf swing and performance variables before and after the session (p > .05). Significant changes were displayed in MDF and RMS in the lead lower lumbar and all trail regions of the erector-spinae muscle when comparing the MVC performed before and after the session (p < .05). Fatigue was evident in the trail side of the erector-spinae muscle after the session.
Definition of choking in sport: Re-conceptualization and debate
- Authors: Mesagno, Christopher , Hill, Denise
- Date: 2013
- Type: Text , Journal article
- Relation: International Journal of Sport Psychology Vol. 44, no. 4 (July-August 2013 2013), p. 267-277
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- Description: In sport, choking under pressure is a negative athletic experience that may have psychologically damaging effects. The media recognizes that choking is a dramatic drop in performance, whereas researchers have labeled choking as any decrease in performance under pressure. This discrepancy between the media's and researchers' perception of choking leads to ambiguity among terms and confusion among researchers, applied practitioners, and the general public. Thus, the current position paper will: critically analyze current choking definitions and explore why they are not appropriate operational definitions; explain the current underperformance and choking terminology debate; offer an alternative choking definition that should be debated; and also identify ways that researchers can improve the robustness of choking investigations. It is hoped that this paper will stimulate debate and improve the quality of future choking research.
Discriminative ability of lower limb strength and power measures in lacrosse athletes
- Authors: Talpey, Scott , Axtell, Robert , Gardner, Elizabeth , Maloney, Maggie , Newman, Thomas , Cordone, Jason , O'Grady, Mathew
- Date: 2023
- Type: Text , Journal article
- Relation: International Journal of Sports Medicine Vol. 44, no. 1 (2023), p. 29-37
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- Description: The objective of this investigation was to compare isokinetic strength, countermovement jump and drop jump variables between high-contributors and low-contributors within NCAA Division I Men's and Women's lacrosse athletes. Men's (N=36) and Women's (N=30) NCAA Division I lacrosse athletes completed strength testing of the quadriceps and hamstring across three speeds (60°·s -1, 180°·s -1, 300°·s -1), countermovement and drop jumps. To determine the discriminative ability of select lower-limb strength and power characteristics participants were categorized as high-contributors (Males N=18, age=20.3±0.4 yrs, height=183.9±5.5 cm, mass=90.8±5.8 kg; Females N=15, age=20.8±0.8 yrs, height=169.3±6.7 cm, mass=64.1±7.2 kg) or low-contributors (Males N=18, age=19.5±0.2 yrs, height=184.1±5.6 cm; mass=87.9±8.1 kg; Females N=15, age=19.7±0.2 yrs, height=169.8±7.0 cm, mass=62.9±7.7 kg) based upon the number of games the participants competed in during the regular season. Within the male cohort, moderate significant (p<0.05) differences were observed between high-contributors and low-contributors in isokinetic hamstring strength of the left leg at 300°·s -1(d=0.69) and peak power in countermovement jump (d= 0.68). Within the women's cohort a large (d= 0.87) significant difference (p<0.05) in isokinetic strength of the left hamstring was observed between high-contributors and low-contributors at 60°·s -1. Hamstring strength and lower-limb power are important strength measures for lacrosse performance and should be prioritized in training prescription for lacrosse athletes. © 2023 Georg Thieme Verlag. All rights reserved.
Does ISO 9000 certification benefit service firms?
- Authors: Chen, Yan-ying , Wu, Long , Zhai, Qing-guo
- Date: 2019
- Type: Text , Journal article
- Relation: Sustainability Vol. 11, no. 21 (Nov 2019), p. 18
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- Description: This paper examines whether ISO 9000 certification benefits service firms in terms of their financial performance and promotes sustainable improvement. We argue that in a developing country setting such as China, the massive benefits brought by the signalling effect of the certification can discourage firms' motivation to fully implement the standard of certification and lead to the decline of investment on productivity-improving activities. In other words, the certification may have negative effects on the productivity of certified firms. We investigate 89,024 firms in Chinese service industries to assess the impacts of the certification on sales, productivity and profitability of these firms. To address the potential selection bias of ISO 9000 certification, the Propensity Score Matching method and Coarsened Exact Matching method were used. Our key findings are that the ISO 9000 certification does help to increase the total amount of sales, but it decreases the productivity and profitability of these certified service firms. We also find that earlier certifiers seem to gain larger advantage in sales but more reduction in productivity, and firms with higher level of technology intensity seem to obtain a larger increase in sales and less productivity loss after receiving their ISO 9000 certification.
Does weight status influence associations between children's fundamental movement skills and physical activity?
- Authors: Hume, Clare , Okely, Anthony , Bagley, Sarah , Telford, Amanda , Booth, Michael , Crawford, David , Salmon, Jo
- Date: 2008
- Type: Text , Journal article
- Relation: Research Quarterly for Exercise and Sport Vol. 79, no. 2 (Jun 2008), p. 158-165
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- Description: This study sought to determine whether weight status influences the association among children's fundamental movement skills (EMS) and physical activity (PA). Two hundred forty-eight children ages 9-12 years participated. Proficiency in three object-control skills and two locomotor skills was examined. Accelerometers objectively assessed physical activity. Body mass index was calculated to determine weight status. Correlations between physical activity and FMS proficiency were evident among boys and girls. No significant interaction was apparent when examining FMS proficiency scores, PA variables, and weight status. Future studies should examine a broader range of skills and types of activities to better characterize this relationship and to inform the promotion of movement skill proficiency and PA.
- Description: C1
Effects of a proper feature selection on prediction and optimization of drilling rate using intelligent techniques
- Authors: Liao, Xiufeng , Khandelwal, Manoj , Yang, Haiqing , Koopialipoor, Mohammadreza , Murlidhar, Bhatawdekar
- Date: 2020
- Type: Text , Journal article
- Relation: Engineering with Computers Vol. 36, no. 2 (Apr 2020), p. 499-510
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- Description: One of the important factors during drilling times is the rate of penetration (ROP), which is controlled based on different variables. Factors affecting different drillings are of paramount importance. In the current research, an attempt was made to better recognize drilling parameters and optimize them based on an optimization algorithm. For this purpose, 618 data sets, including RPM, flushing media, and compressive strength parameters, were measured and collected. After an initial investigation, the compressive strength feature of samples, which is an important parameter from the rocks, was used as a proper criterion for classification. Then using intelligent systems, three different levels of the rock strength and all data were modeled. The results showed that systems which were classified based on compressive strength showed a better performance for ROP assessment due to the proximity of features. Therefore, these three levels were used for classification. A new artificial bee colony algorithm was used to solve this problem. Optimizations were applied to the selected models under different optimization conditions, and optimal states were determined. As determining drilling machine parameters is important, these parameters were determined based on optimal conditions. The obtained results showed that this intelligent system can well improve drilling conditions and increase the ROP value for three strength levels of the rocks. This modeling system can be used in different drilling operations.
Exploration of the perceptual-cognitive processes that contribute to in-game decision-making of Australian football umpires
- Authors: Larkin, Paul , Mesagno, Chrisopher , Berry, Jason , Spittle, Michael
- Date: 2018
- Type: Text , Journal article
- Relation: International Journal of Sport and Exercise Psychology Vol. 16, no. 2 (2018), p. 112-124
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- Description: Decision-making is fundamental to officiating in all sports. It is well established in contemporary research that decision-making skills underpin umpire expertise; however, there is little understanding of the cognitive processes that contribute to in-game decision-making. This research implemented an in-depth case study approach, using qualitative methods, to explore the in-game decision-making process of three Australian football umpires. Concurrent and retrospective verbalisation methods were used to obtain verbal reports of the cognitive processes associated with decision-making. Findings identified three salient themes related to both in-game decision-making processes (i.e. decision evaluation, player intention during game-play) and umpire performance (i.e. knowledge of game-play). These themes contributed to the development of decision-making heuristics for Australian football umpires. This study provides initial evidence of the factors that may contribute to and/or affect in-game decision-making processes; however, additional exploration is necessary to further inform training programmes aimed to develop domain-specific decision-making skills and subsequent in-game performance. © 2016 International Society of Sport Psychology.
Factors that impact measures of grit among nursing students : a journey emblematic of the koi fish
- Authors: Terry, Daniel , Peck, Blake
- Date: 2020
- Type: Text , Journal article
- Relation: European Journal of Investigation in Health Psychology and Education Vol. 10, no. 2 (Jun 2020), p. 564-574
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- Description: Grit is the capacity to persevere, to have passion, and be committed to achieve goals long-term regardless of adversity or challenge. Grit provides an insight into why some nursing students succeed academically or clinically, while others do not. This quantitative cross-sectional correlational study measured levels of grit among nursing students undertaking a three-year bachelor's degree program. All students (n = 2349) within the program were invited to complete a questionnaire which included the short grit scale (Grit-S) which measured each student's level of perseverance and passion. Overall, it was highlighted that increased levels of grit correlated with an increase in the student's year of study, greater perceived clinical and academic performance, not using television as a motivator for entry to nursing, being lower on the socio-economic spectrum, and being older in age. Grit was found to develop exponentially as students entered second and third years, suggesting that a balance of constant academic and clinical challenge was an impetus for many to achieve in the face of adversity, and is reminiscent of the journey of the koi fish. This paper culminates in a call for educators to consider the inclusion of creative grit forming challenges that focus on developing a student's sense of open-mindedness within first year of undergraduate nursing programs.