... New! Shop for Google eBooks. Go to the Google eBookstore for over 3 million eBooks to read on... more ... New! Shop for Google eBooks. Go to the Google eBookstore for over 3 million eBooks to read on the Web, Android, iPhone, iPad, Sony and Nook. ... All Book Search results ». FromGoogle Scholar. Multilevel Statistical Models. Harvey Goldstein. ...
2684 RESEARCH REPORT PLATFORM PRESENTATION Number: 2684 Physiotherapy 2007;93(S1):S76 Sunday 3 Ju... more 2684 RESEARCH REPORT PLATFORM PRESENTATION Number: 2684 Physiotherapy 2007;93(S1):S76 Sunday 3 June 13:25 VCEC Ballroom A SENSORIMOTOR DEFICITS IN TENNIS ELBOW: RESULTS OF A RANDOMISED CONTROLLED TRIAL. Bisset L1, Darnell R2, Vicenzino B2; 1Griffith University, Gold Coast, Australia. 2The University of Queensland, Brisbane, Australia PURPOSE: The purpose of this randomised controlled trial was to evaluate the effect of a physiotherapy programme, corticosteroid injections or a wait and see approach on sensorimotor performance in patients with tennis elbow (TE). RELEVANCE: TE is a chronic musculoskeletal condition affecting approximately 1-3% of the general population. The poorly understood aetiology of TE is reflected by the multiple clinical treatments currently in use. Recent research suggests a neurophysiological component, evidenced by sensorimotor deficits such as upper limb reaction time and speed of movement in the order of 11-32%. However, changes in sensorimotor deficits in ...
Quantifying biodiversity aspects such as species presence/ absence, richness and abundance is an ... more Quantifying biodiversity aspects such as species presence/ absence, richness and abundance is an important challenge to answer scientific and resource management questions. In practice, biodiversity can only be assessed from biological material taken by surveys, a difficult task given limited time and resources. A type of random sampling, or often called sub-sampling, is a commonly used technique to reduce the amount of time and effort for investigating large quantities of biological samples. However, it is not immediately clear how (sub-)sampling affects the estimate of biodiversity aspects from a quantitative perspective. This paper specifies the effect of (sub-)sampling as attenuation of the species abundance distribution (SAD), and articulates how the sampling bias is induced to the SAD by random sampling. The framework presented also reveals some confusion in previous theoretical studies.
Environmental issues regarding possible environmental pollution links to human and ecological hea... more Environmental issues regarding possible environmental pollution links to human and ecological health are becoming more numerous and controversial. The ideal approach to assessing potential health risks from environmental exposure is to conduct well-designed, prospective, environmental, epidemiological studies. However, prospective epidemiological studies are difficult and expensive to undertake, and even retrospective studies can be prohibitively complex. Reliable environmental data are not easy to find and often they may not have been collected in a manner that makes them easy to use. The availability of data increases the risk of identifying single units using increasingly powerful search engines by ill-intentioned users. The increasing public availability of health and environmental data raises the risk of identifying individuals, forcing data owners to develop techniques to reduce this risk. Keywords: environmental data; environmental information disclosure; record linkage; imputation; data mining
Toppenberg, RMK, Wright, A. and Darnell, RE (2005). Differences in Vertex Electromyographic Respo... more Toppenberg, RMK, Wright, A. and Darnell, RE (2005). Differences in Vertex Electromyographic Responses During Selected Tasks, Painless Passive Movement and an Upper Limb Neurodynamic Test. In: Louise Ada, Australian Journal of Physiotherapy; 2005 MPA 14th Biennial ...
This study investigated muscle responses to the upper limb neurodynamic test, median nerve bias (... more This study investigated muscle responses to the upper limb neurodynamic test, median nerve bias (ULNT1) in subjects with current unilateral arm pain (n= 7), subjects with a history of unilateral arm pain (n= 12) and asymptomatic subjects (n= 41). Electromyography (EMG ...
Toppenberg, RMK, Wright, A. and Darnell, RE (2005). Vertex Electroencephalographic Responses to P... more Toppenberg, RMK, Wright, A. and Darnell, RE (2005). Vertex Electroencephalographic Responses to Pain During the Upper Limb Neurodynamic Test (Median Nerve Bias) Applied as a Nociceptive Stimulus. In: Louise Ada, Australian Journal of Physiotherapy; 2005 MPA 14th Biennial ...
SummaryThe post-weaning growth, frame size and body condition of Hereford (H × H), Brahman × Here... more SummaryThe post-weaning growth, frame size and body condition of Hereford (H × H), Brahman × Hereford (B × H), Simmental × Hereford (S × H) and Friesian × Hereford (F × H) heifers were evaluated on three pasture systems in each of five years. One group of heifers was grown from weaning (at 8 months of age) to 18 months on the high-pasture system, which included supplementation with grain, while the other two groups were grown to 30 months on pastures of medium or low quality. Pasture effects were large compared with differences between years, with average daily gains between weaning and 18 months of 552, 275 and 97 g/day on high, medium and low pastures, respectively. Genotype had a significant effect on all measurements. Pasture × genotype interaction was significant in most instances. While crosses grew faster and were heavier than H × H on all pastures, S × H were heaviest by 18 months on high pasture, with B × H heaviest at all ages up to 30 months on both medium and low pasture...
... Present address: NSW Agriculture, Dubbo, NSW 2830 ... 24 h of birth: birth day (days), propor... more ... Present address: NSW Agriculture, Dubbo, NSW 2830 ... 24 h of birth: birth day (days), proportion of eyelid surrounded by pigmentation (%), birth weight (kg), birth height (mm), birth girth (mm), birth length (mm), whether the calf was born alive or dead (skeletal measurements ...
Scandinavian Journal of Occupational Therapy, 2006
This paper reports on the construct validity (scale design and convergent validity) and ecologica... more This paper reports on the construct validity (scale design and convergent validity) and ecological validity of the Occupational Therapy Adult Perceptual Screening Test (OT-APST). The performance of 208 participants following stroke on the OT-APST and a reference tool (either the Loewenstein Occupational Therapy Cognitive Assessment (LOTCA) or the LOTCA-Geriatric version (LOTCA-G)) was compared. The OT-APST performance of the stroke sample was compared with a healthy normative sample (n = 356). The relationship between the OT-APST performance and the Functional Independence Measure (FIM) score of the participants following stroke was also examined. Factor analysis and internal consistency results supported the scale design of the OT-APST. Significant correlations between the performance of the participants following stroke on the OT-APST and the reference tool supported the convergent validity of the OT-APST. The ability of the OT-APST to separate the two participant groups provided further evidence of its construct validity. Significant correlations between OT-APST and FIM scores supported the ecological validity of this tool. This study shows that the OT-APST is an ecologically valid tool with demonstrated construct validity in the assessment of visual perception.
The export of pollutant loads from coastal catchments is of primary interest to natural resource ... more The export of pollutant loads from coastal catchments is of primary interest to natural resource management. For example, Reef Plan, a joint initiative by the Australian Government and the Queensland Government, has indicated that a 20% reduction in sediment is required by 2020. There is an obvious need to consider our ability to detect any trend if we are to set realistic targets or to reliably identify changes to catchment loads. We investigate the number of years of monitoring aquatic pollutant loads necessary to detect trends. Instead of modelling the trend in the annual loads directly, given their strong relationship to flow, we consider trends through the reduction in concentration for a given flow. Our simulations show very low power (<40%) of detecting changes of 20% over time periods of several decades, indicating that the chances of detecting trends of reasonable magnitudes over these time frames are very small.
... New! Shop for Google eBooks. Go to the Google eBookstore for over 3 million eBooks to read on... more ... New! Shop for Google eBooks. Go to the Google eBookstore for over 3 million eBooks to read on the Web, Android, iPhone, iPad, Sony and Nook. ... All Book Search results ». FromGoogle Scholar. Multilevel Statistical Models. Harvey Goldstein. ...
2684 RESEARCH REPORT PLATFORM PRESENTATION Number: 2684 Physiotherapy 2007;93(S1):S76 Sunday 3 Ju... more 2684 RESEARCH REPORT PLATFORM PRESENTATION Number: 2684 Physiotherapy 2007;93(S1):S76 Sunday 3 June 13:25 VCEC Ballroom A SENSORIMOTOR DEFICITS IN TENNIS ELBOW: RESULTS OF A RANDOMISED CONTROLLED TRIAL. Bisset L1, Darnell R2, Vicenzino B2; 1Griffith University, Gold Coast, Australia. 2The University of Queensland, Brisbane, Australia PURPOSE: The purpose of this randomised controlled trial was to evaluate the effect of a physiotherapy programme, corticosteroid injections or a wait and see approach on sensorimotor performance in patients with tennis elbow (TE). RELEVANCE: TE is a chronic musculoskeletal condition affecting approximately 1-3% of the general population. The poorly understood aetiology of TE is reflected by the multiple clinical treatments currently in use. Recent research suggests a neurophysiological component, evidenced by sensorimotor deficits such as upper limb reaction time and speed of movement in the order of 11-32%. However, changes in sensorimotor deficits in ...
Quantifying biodiversity aspects such as species presence/ absence, richness and abundance is an ... more Quantifying biodiversity aspects such as species presence/ absence, richness and abundance is an important challenge to answer scientific and resource management questions. In practice, biodiversity can only be assessed from biological material taken by surveys, a difficult task given limited time and resources. A type of random sampling, or often called sub-sampling, is a commonly used technique to reduce the amount of time and effort for investigating large quantities of biological samples. However, it is not immediately clear how (sub-)sampling affects the estimate of biodiversity aspects from a quantitative perspective. This paper specifies the effect of (sub-)sampling as attenuation of the species abundance distribution (SAD), and articulates how the sampling bias is induced to the SAD by random sampling. The framework presented also reveals some confusion in previous theoretical studies.
Environmental issues regarding possible environmental pollution links to human and ecological hea... more Environmental issues regarding possible environmental pollution links to human and ecological health are becoming more numerous and controversial. The ideal approach to assessing potential health risks from environmental exposure is to conduct well-designed, prospective, environmental, epidemiological studies. However, prospective epidemiological studies are difficult and expensive to undertake, and even retrospective studies can be prohibitively complex. Reliable environmental data are not easy to find and often they may not have been collected in a manner that makes them easy to use. The availability of data increases the risk of identifying single units using increasingly powerful search engines by ill-intentioned users. The increasing public availability of health and environmental data raises the risk of identifying individuals, forcing data owners to develop techniques to reduce this risk. Keywords: environmental data; environmental information disclosure; record linkage; imputation; data mining
Toppenberg, RMK, Wright, A. and Darnell, RE (2005). Differences in Vertex Electromyographic Respo... more Toppenberg, RMK, Wright, A. and Darnell, RE (2005). Differences in Vertex Electromyographic Responses During Selected Tasks, Painless Passive Movement and an Upper Limb Neurodynamic Test. In: Louise Ada, Australian Journal of Physiotherapy; 2005 MPA 14th Biennial ...
This study investigated muscle responses to the upper limb neurodynamic test, median nerve bias (... more This study investigated muscle responses to the upper limb neurodynamic test, median nerve bias (ULNT1) in subjects with current unilateral arm pain (n= 7), subjects with a history of unilateral arm pain (n= 12) and asymptomatic subjects (n= 41). Electromyography (EMG ...
Toppenberg, RMK, Wright, A. and Darnell, RE (2005). Vertex Electroencephalographic Responses to P... more Toppenberg, RMK, Wright, A. and Darnell, RE (2005). Vertex Electroencephalographic Responses to Pain During the Upper Limb Neurodynamic Test (Median Nerve Bias) Applied as a Nociceptive Stimulus. In: Louise Ada, Australian Journal of Physiotherapy; 2005 MPA 14th Biennial ...
SummaryThe post-weaning growth, frame size and body condition of Hereford (H × H), Brahman × Here... more SummaryThe post-weaning growth, frame size and body condition of Hereford (H × H), Brahman × Hereford (B × H), Simmental × Hereford (S × H) and Friesian × Hereford (F × H) heifers were evaluated on three pasture systems in each of five years. One group of heifers was grown from weaning (at 8 months of age) to 18 months on the high-pasture system, which included supplementation with grain, while the other two groups were grown to 30 months on pastures of medium or low quality. Pasture effects were large compared with differences between years, with average daily gains between weaning and 18 months of 552, 275 and 97 g/day on high, medium and low pastures, respectively. Genotype had a significant effect on all measurements. Pasture × genotype interaction was significant in most instances. While crosses grew faster and were heavier than H × H on all pastures, S × H were heaviest by 18 months on high pasture, with B × H heaviest at all ages up to 30 months on both medium and low pasture...
... Present address: NSW Agriculture, Dubbo, NSW 2830 ... 24 h of birth: birth day (days), propor... more ... Present address: NSW Agriculture, Dubbo, NSW 2830 ... 24 h of birth: birth day (days), proportion of eyelid surrounded by pigmentation (%), birth weight (kg), birth height (mm), birth girth (mm), birth length (mm), whether the calf was born alive or dead (skeletal measurements ...
Scandinavian Journal of Occupational Therapy, 2006
This paper reports on the construct validity (scale design and convergent validity) and ecologica... more This paper reports on the construct validity (scale design and convergent validity) and ecological validity of the Occupational Therapy Adult Perceptual Screening Test (OT-APST). The performance of 208 participants following stroke on the OT-APST and a reference tool (either the Loewenstein Occupational Therapy Cognitive Assessment (LOTCA) or the LOTCA-Geriatric version (LOTCA-G)) was compared. The OT-APST performance of the stroke sample was compared with a healthy normative sample (n = 356). The relationship between the OT-APST performance and the Functional Independence Measure (FIM) score of the participants following stroke was also examined. Factor analysis and internal consistency results supported the scale design of the OT-APST. Significant correlations between the performance of the participants following stroke on the OT-APST and the reference tool supported the convergent validity of the OT-APST. The ability of the OT-APST to separate the two participant groups provided further evidence of its construct validity. Significant correlations between OT-APST and FIM scores supported the ecological validity of this tool. This study shows that the OT-APST is an ecologically valid tool with demonstrated construct validity in the assessment of visual perception.
The export of pollutant loads from coastal catchments is of primary interest to natural resource ... more The export of pollutant loads from coastal catchments is of primary interest to natural resource management. For example, Reef Plan, a joint initiative by the Australian Government and the Queensland Government, has indicated that a 20% reduction in sediment is required by 2020. There is an obvious need to consider our ability to detect any trend if we are to set realistic targets or to reliably identify changes to catchment loads. We investigate the number of years of monitoring aquatic pollutant loads necessary to detect trends. Instead of modelling the trend in the annual loads directly, given their strong relationship to flow, we consider trends through the reduction in concentration for a given flow. Our simulations show very low power (<40%) of detecting changes of 20% over time periods of several decades, indicating that the chances of detecting trends of reasonable magnitudes over these time frames are very small.
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Papers by Ross Darnell