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Articles 31 - 42 of 42

Full-Text Articles in Social and Behavioral Sciences

Performance Of Body Mass Index In Predicting Diabetes And Hypertension In The Eastern Province Of Saudi Arabia, Ali M. Almajwal, Nadira A. Al-Baghli, Marijka J. Batterham, Peter G. Williams, Khalid A. Al-Turki, Aqeel J. Al-Ghamdi Jan 2009

Performance Of Body Mass Index In Predicting Diabetes And Hypertension In The Eastern Province Of Saudi Arabia, Ali M. Almajwal, Nadira A. Al-Baghli, Marijka J. Batterham, Peter G. Williams, Khalid A. Al-Turki, Aqeel J. Al-Ghamdi

Faculty of Health and Behavioural Sciences - Papers (Archive)

BACKGROUND AND OBJECTIVES: BMI is the most widely used measure to diagnose obesity but its accuracy and usefulness in Saudi subjects is unknown. This study aimed to assess the validity of standard BMI cut-point values in the Saudi population. SUBJECTS/ METHODS: 197,681 adults participated in a cross-sectional study to detect diabetes and hypertension in the Saudi Eastern province in 2004/5, with blood pressure, fasting blood sugar, height and weight measurements taken. Sensitivities, specificities, areas under the curves, predictive values, likelihood ratios, false positive, false negatives and total misclassification ratios were calculated for various BMI values determined from receiver operating characteristic …

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Improved Performance Of Porphyrin-Based Dye Sensitised Solar Cells By Phosphinic Acid Surface Treatment, K Sunahara, Alessandra Allegrucci, S Mori, Naomi A. Lewcenko, Leone Spiccia, Attila J. Mozer, Lynn Dennany, Pawel W. Wagner, David L. Officer Jan 2009

Improved Performance Of Porphyrin-Based Dye Sensitised Solar Cells By Phosphinic Acid Surface Treatment, K Sunahara, Alessandra Allegrucci, S Mori, Naomi A. Lewcenko, Leone Spiccia, Attila J. Mozer, Lynn Dennany, Pawel W. Wagner, David L. Officer

Faculty of Science - Papers (Archive)

Chemical surface treatment of porphyrin-sensitised titania films using bis-(4-methoxyphenyl)phosphinic acid after dye adsorption, results in large improvements in DSSC efficiencies which originate primarily from higher short circuit currents. The result was attributed to a positive shift in the TiO2 quasi-Fermi level with simultaneous retardation of charge recombination. High device performances have been achieved even using simplified electrolyte matrices devoid of the common additives, LiI and t-butylpyridine.

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The Relationship Between Driving Anxiety And Driving Skill: A Review Of Human Factors And Anxiety-Performance Theories To Clarify Future Research Needs, Joanne Taylor, Frank P. Deane, John Podd Jan 2008

The Relationship Between Driving Anxiety And Driving Skill: A Review Of Human Factors And Anxiety-Performance Theories To Clarify Future Research Needs, Joanne Taylor, Frank P. Deane, John Podd

Faculty of Health and Behavioural Sciences - Papers (Archive)

This article examines theory and identifies gaps in research related to the role of driving skills in driving anxiety. Increasingly, investigators have examined the clinical features of driving anxiety and the more severe situation of driving fear and phobia, but the possible involvement of driving skills has been neglected. This is surprising given the potential implications for skills training and remediation in the assessment and treatment of some of those who experience driving anxiety, fear, and phobia. The largest body of relevant research comes from the driving and human factors literature on the relationship between anxiety and driving performance. The …

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Enhanced Performance Of Dye Sensitized Solar Cells Utilizing Platinum Electrodeposit Counter Electrodes, Attila J. Mozer, George Tsekouras, Gordon G. Wallace Jan 2008

Enhanced Performance Of Dye Sensitized Solar Cells Utilizing Platinum Electrodeposit Counter Electrodes, Attila J. Mozer, George Tsekouras, Gordon G. Wallace

Faculty of Science - Papers (Archive)

Enhanced performance was observed for dye-sensitized solar cells (DSSCs) utilizing counter electrodes based on Pt electrodeposits compared to counter electrodes based on sputtered Pt. Scanning electron microscopy of Pt electrodeposits revealed that the use of an initial cathodic overpotential pulse followed by steady electrodeposition at a mild cathodic potential yielded ∼40nm particles, compared to ∼600nm particles when no such pulse was used. Cyclic voltammetry and electrochemical impedance spectroscopy (EIS) of electrode materials suggested that Pt electrodeposits would give enhanced performance as DSSC counter electrodes compared to sputtered Pt, and this was confirmed by device testing. EIS characterization of DSSCs under …

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Testosterone Effects On Avian Basal Metabolic Rate And Aerobic Performance: Facts And Artefacts, W A. Buttemer, S Warne, C Bech, Lee Astheimer Jan 2008

Testosterone Effects On Avian Basal Metabolic Rate And Aerobic Performance: Facts And Artefacts, W A. Buttemer, S Warne, C Bech, Lee Astheimer

Faculty of Science - Papers (Archive)

We examined the effects of cage size and testosterone (T) levels on basal and peak metabolic rates (BMR and PMR, respectively) and on pectoral and leg muscle masses of male house sparrows (Passer domesticus). Birds were housed either in small birdcages or in flight aviaries for at least 2 weeks prior to the initial metabolic evaluations. They were then implanted with either empty or T-filled silastic capsules and remeasured 5-6 weeks later. Birds treated with single T implants achieved breeding levels (4-6 ng/mL) and one group given double implants reached 10 ng/mL. There was no effect of T on BMR …

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Arousal And Activation Effects On Physiological And Behavioral Responding During A Continuous Performance Task, Jacqueline A. Rushby, Robert J. Barry, Adam R. Clarke, Mohammad Vaezmousavi Jan 2007

Arousal And Activation Effects On Physiological And Behavioral Responding During A Continuous Performance Task, Jacqueline A. Rushby, Robert J. Barry, Adam R. Clarke, Mohammad Vaezmousavi

Faculty of Health and Behavioural Sciences - Papers (Archive)

Based on previous work indicating different neural substrates, two aspects of energetic state, arousal and activation, have been conceptualised separately in our laboratory. Arousal has been defined as the energetic state at any particular time, and task-related activation as the task-related change in state from resting baseline to the task situation. Both are reflected in electrodermal activity and measured by skin conductance level. Our previous studies in this area have indicated that physiological responses to stimuli in a task are dependent on the arousal level at the time of stimulus presentation, rather than the task-related activation. In contrast, performance on …

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An Application Of A Psychometric Personality Type Inventory To Improve Team Development And Performance, Terence J. Froggatt, Nathan J. Bibby Jan 2007

An Application Of A Psychometric Personality Type Inventory To Improve Team Development And Performance, Terence J. Froggatt, Nathan J. Bibby

Faculty of Health and Behavioural Sciences - Papers (Archive)

The issue of individual type preferences and how they relate to learning and human resource management are explored. Team learning, knowledge transfer, characteristics of leadership and trust and trusting in the context of team development and performance, are analyzed through the use of the Myers Briggs Type Indicator. The research is conducted with a semi professional Australian Rules football team. The team consists of a culturally diverse group. Predominantly, Australian men between the ages of 18 and 35 years. The men are university educated, trades professionals or blue collar workers, who volunteered to complete the Myers Briggs Type Indicator with …

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Examining The Direction Of Imagery And Self-Talk On Dart-Throwing Performance And Self Efficacy, Jennifer Cumming, Sanna M. Nordin, Robin Horton, Scott Reynolds Jan 2006

Examining The Direction Of Imagery And Self-Talk On Dart-Throwing Performance And Self Efficacy, Jennifer Cumming, Sanna M. Nordin, Robin Horton, Scott Reynolds

Jennifer Cumming

The study investigated the impact of varying combinations of facilitative and debilitative imagery and self-talk (ST) on self-effi cacy and performance of a dart-throwing task. Participants (N = 95) were allocated to 1 of 5 groups: (a) facilitative imagery/facilitative ST, (b) facilitative imagery/debilitative ST, (c) debilitative imagery/facilitative ST, (d) debilitative imagery/debilitative ST, or (e) control. Mixed-design ANOVAs revealed that performance, but not self-effi - cacy, changed over time as a function of the assigned experimental condition. Participants in the debilitative imagery/debilitative ST condition worsened their performance, and participants in the facilitative imagery/facilitative ST condition achieved better scores. These fi ndings …

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Low And High Trait Impulsiveness In The Stop-Signal Task: Underlying Differences In Erps But Not Performance, Aneta Dimoska, Stuart J. Johnstone Jan 2006

Low And High Trait Impulsiveness In The Stop-Signal Task: Underlying Differences In Erps But Not Performance, Aneta Dimoska, Stuart J. Johnstone

Faculty of Health and Behavioural Sciences - Papers (Archive)

No abstract provided.

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The Interaction Of Transcutaneous Heating And Helicopter Flight Simulation Performance, Joanne N. Caldwell, Mark J. Patterson, Nigel A.S Taylor Jan 2005

The Interaction Of Transcutaneous Heating And Helicopter Flight Simulation Performance, Joanne N. Caldwell, Mark J. Patterson, Nigel A.S Taylor

Faculty of Health and Behavioural Sciences - Papers (Archive)

It is well known that elevations in body temperature can impair both physical and cognitive performance. For helicopter pilots, the major heat source during flight originates from solar radiation. However, when nuclear, biological and chemical (NBC) protective clothing is worn, metabolic heat generated during the pre-flight period, and during the mission, is trapped, exacerbating thermal strain. In this project, the hypothesis that elevations in body heat content would degrade flight performance was tested. Helicopter pilots completed three, two-hour flight simulations under three levels of thermal strain, administered in a balanced order. Thermal strain was induced using a water-perfusion gannent, worn …

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Viewpoint Dependent Performance For Faces Rotated About Pitch And Yaw Axes, Simone K. Favelle, Stephen A. Palmisano, Ryan T. Maloney Jan 2005

Viewpoint Dependent Performance For Faces Rotated About Pitch And Yaw Axes, Simone K. Favelle, Stephen A. Palmisano, Ryan T. Maloney

Faculty of Health and Behavioural Sciences - Papers (Archive)

No abstract provided.

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Vocal Response Of Piglets To Weaning: Effect Of Piglet Age, Daniel M. Weary, David Fraser Oct 1997

Vocal Response Of Piglets To Weaning: Effect Of Piglet Age, Daniel M. Weary, David Fraser

Ontogeny Collection

Piglets vocalize a great deal during the first few days after weaning. The aim of this experiment was to determine if the calls given by piglets vary in response to one factor thought to influence post-weaning adaptation: weaning age. In 22 litters, each containing a minimum of 9 piglets, 3 piglets were weaned under identical conditions at 3, 4 and 5 weeks of age. Vocalizations and weight gain were monitored for the week after weaning. The number of calls produced by piglets of all three ages declined from an average of 8.2 calls/min per piglet on the day of weaning …

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