Pasan Hettiarachchi

Development and performance of a sleep estimation algorithm using a single accelerometer placed on the thigh: an evaluation against polysomnography

Johansson, Peter; Crowley, Patrick; Axelsson, John; Franklin, Karl et al.

Ingår i Journal of Sleep Research, 2023

• DOI för Development and performance of a sleep estimation algorithm using a single accelerometer placed on the thigh: an evaluation against polysomnography
• Ladda ner fulltext (pdf) av Development and performance of a sleep estimation algorithm using a single accelerometer placed on the thigh: an evaluation against polysomnography

The Surveillance of Physical Activity, Sedentary Behavior, and Sleep: Protocol for the Development and Feasibility Evaluation of a Novel Measurement System

Crowley, Patrick; Ikeda, Erika; Islam, Sheikh Mohammed Shariful; Kildedal, Rasmus et al.

Ingår i JMIR Research Protocols, 2022

• DOI för The Surveillance of Physical Activity, Sedentary Behavior, and Sleep: Protocol for the Development and Feasibility Evaluation of a Novel Measurement System
• Ladda ner fulltext (pdf) av The Surveillance of Physical Activity, Sedentary Behavior, and Sleep: Protocol for the Development and Feasibility Evaluation of a Novel Measurement System

Attachment process of the discharge of competing grounded electrodes - Experimental observations and modeling

Arevalo, Liliana; Lobato, André; Cooray, Vernon; Hettiarachchi, Pasan et al.

Ingår i 2021 35th International Conference on Lightning Protection (ICLP) and XVI International Symposium On Lightning Protection (SIPDA), 2021

• DOI för Attachment process of the discharge of competing grounded electrodes - Experimental observations and modeling

Frequency spectra of various events pertinent to lightning cloud flashes obtained from wavelet transform technique and ratified by narrow band measurement technique

Sharma, S. R.; Ismail, Mohd Muzafar; Hettiarachchi, Pasan; Cooray, Vernon et al.

Ingår i Journal of Atmospheric and Solar-Terrestrial Physics, 2021

• DOI för Frequency spectra of various events pertinent to lightning cloud flashes obtained from wavelet transform technique and ratified by narrow band measurement technique

Observations of X-rays in 4-meters long laboratory sparks under positive lightning impulse

Wooi, Chin-Leong; Hettiarachchi, Pasan; Rahman, Mahbubur; Cooray, Vernon et al.

Ingår i 2021 35TH INTERNATIONAL CONFERENCE ON LIGHTNING PROTECTION (ICLP) AND XVI INTERNATIONAL SYMPOSIUM ON LIGHTNING PROTECTION (SIPDA), 2021

• DOI för Observations of X-rays in 4-meters long laboratory sparks under positive lightning impulse

Validity of a Non-Proprietary Algorithm for Identifying Lying Down Using Raw Data from Thigh-Worn Triaxial Accelerometers

Hettiarachchi, Pasan; Aili, Katarina; Holtermann, Andreas; Stamatakis, Emmanuel et al.

Ingår i Sensors, 2021

• DOI för Validity of a Non-Proprietary Algorithm for Identifying Lying Down Using Raw Data from Thigh-Worn Triaxial Accelerometers
• Ladda ner fulltext (pdf) av Validity of a Non-Proprietary Algorithm for Identifying Lying Down Using Raw Data from Thigh-Worn Triaxial Accelerometers

Observations of X-rays from Laboratory Sparks in Air at Atmospheric Pressure under Negative Switching Impulse Voltages

Rahman, Mahbubur; Hettiarachchi, Pasan; Cooray, Vernon; Dwyer, Joseph et al.

Ingår i Atmosphere, 2019

• DOI för Observations of X-rays from Laboratory Sparks in Air at Atmospheric Pressure under Negative Switching Impulse Voltages
• Ladda ner fulltext (pdf) av Observations of X-rays from Laboratory Sparks in Air at Atmospheric Pressure under Negative Switching Impulse Voltages

High-Speed Video Observation of a Dart Leader Producing X-rays

Saba, M. M. F.; Ferro, M. A. S.; Cuactros, E. T.; Custodio, D. M. et al.

Ingår i Journal of Geophysical Research - Space Physics, s. 10564-10570, 2019

• DOI för High-Speed Video Observation of a Dart Leader Producing X-rays
• Ladda ner fulltext (pdf) av High-Speed Video Observation of a Dart Leader Producing X-rays

The leader propagation velocity in long air gaps

Arevalo, Liliana; Wu, Dong; Hettiarachchi, Pasan; Cooray, Vernon et al.

Ingår i 2018 34th international conference on lightning protection (ICLP 2018), 2018

• DOI för The leader propagation velocity in long air gaps

Time Domain Analysis of the Lightning Interaction with Wave Energy Converters

Hettiarachchi, Pasan; Lobato, André; Cooray, Vernon; Leijon, Mats

Ingår i 2018 34th international conference on lightning protection (ICLP 2018), 2018

X-ray observations at Gaisberg Tower

Hettiarachchi, Pasan; Cooray, Vernon; Diendorfer, Gerhard; Pichler, Hannes et al.

Ingår i Atmosphere, 2018

• DOI för X-ray observations at Gaisberg Tower
• Ladda ner fulltext (pdf) av X-ray observations at Gaisberg Tower

Measurements of X-Ray Emission from Laboratory Sparks and Upward Initiated Lightning

Hettiarachchi, Pasan

2018

• Ladda ner fulltext (pdf) av Measurements of X-Ray Emission from Laboratory Sparks and Upward Initiated Lightning

X-rays from negative laboratory sparks in air: Influence of the anode geometry

Hettiarachchi, Pasan; Rahman, Mahbubur; Cooray, Vernon; Dwyer, Joseph

Ingår i Journal of Atmospheric and Solar-Terrestrial Physics, s. 190-194, 2017

• DOI för X-rays from negative laboratory sparks in air: Influence of the anode geometry

Energy Distribution of X-rays Produced by Meter-long Negative Discharges in Air

Hettiarachchi, Pasan; Cooray, Vernon; Rahman, Mahbubur; Dwyer, Joseph

Ingår i Atmosphere, 2017

• DOI för Energy Distribution of X-rays Produced by Meter-long Negative Discharges in Air

The study of lightning strikes to common buildings in Brazil

Saba, Marcelo; Naccarato, Kleber; de Paiva, Amanda R; Schumann, Carina et al.

2016

On the occurrence of ‘bead lightning’ phenomena in long laboratory sparks

Vayanganie, S.P.A.; Cooray, Vernon; Rahman, Mahbubur; Hettiarachchi, Pasan et al.

Ingår i Physics Letters A, s. 816-821, 2016

• DOI för On the occurrence of ‘bead lightning’ phenomena in long laboratory sparks

Production of X-rays in air gaps stressed by switching impulse voltages

Rahman, Mahbubur; Hettiarachchi, Pasan; Cooray, Vernon; Dwyer, J. R. et al.

2016

Fractal analysis of long laboratory sparks of high speed video recordings

Vayanganie, Amila; Gunasekara, Lasitha; Fernando, Mahendra; Sonnadara, Upul et al.

2016

Experimental study of leader tortuosity and velocity in long rod-plane air discharges

Diaz, Oscar; Hettiarachchi, Pasan; Rahman, Mahbubur; Cooray, Vernon et al.

Ingår i IEEE transactions on dielectrics and electrical insulation, s. 806-812, 2016

• DOI för Experimental study of leader tortuosity and velocity in long rod-plane air discharges

X-rays from long laboratory sparks: Influence of the anode geometry

Hettiarachchi, Pasan; Rahman, Mahbubur; Cooray, Vernon

Ingår i International Conference on Atmospheric Electricity ICAE 2014, Norman, OK, U.S.A., 2014

Free-living sit-to-stand angular velocity derived from thigh-worn accelerometry slows during pregnancy, but is not associated with binary self-reported discomfort prevalence

Pellerine, Liam P.; Frankel, Hannah Nortoft; Begtrup, Luise Molenberg; O'Brien, Myles W. et al.

Ingår i Gait & Posture, 2026

• DOI för Free-living sit-to-stand angular velocity derived from thigh-worn accelerometry slows during pregnancy, but is not associated with binary self-reported discomfort prevalence
• Ladda ner fulltext (pdf) av Free-living sit-to-stand angular velocity derived from thigh-worn accelerometry slows during pregnancy, but is not associated with binary self-reported discomfort prevalence

Development and evaluation of wrist- and thigh-worn accelerometer algorithms using self-training machine learning models for classification of activity type and posture: towards device placement-agnostic methods in the ProPASS consortium

Ahmadi, Matthew N.; Koemel, Nicholas; Biswas, Raaj; Holtermann, Andreas et al.

Ingår i International Journal of Behavioral Nutrition and Physical Activity, 2026

• DOI för Development and evaluation of wrist- and thigh-worn accelerometer algorithms using self-training machine learning models for classification of activity type and posture: towards device placement-agnostic methods in the ProPASS consortium
• Ladda ner fulltext (pdf) av Development and evaluation of wrist- and thigh-worn accelerometer algorithms using self-training machine learning models for classification of activity type and posture: towards device placement-agnostic methods in the ProPASS consortium

Changes in physical activity across retirement: a compositional data analysis approach in a Swedish cohort study

Sacco, Lawrence B; Högnäs, Robin S; Palarea-Albaladejo, Javier; Hettiarachchi, Pasan et al.

Ingår i European Review of Aging and Physical Activity, 2026

• DOI för Changes in physical activity across retirement: a compositional data analysis approach in a Swedish cohort study
• Ladda ner fulltext (pdf) av Changes in physical activity across retirement: a compositional data analysis approach in a Swedish cohort study

Device-Measured Sleep Characteristics, Daily Step Count, and Cardiometabolic Health Markers: Findings From the Prospective Physical Activity, Sitting, and Sleep (ProPASS) Consortium

Bian, Wenxin; Ahmadi, Matthew N.; Biswas, Raaj Kishore; Blodgett, Joanna M. et al.

Ingår i Circulation. Cardiovascular Quality and Outcomes, 2025

• DOI för Device-Measured Sleep Characteristics, Daily Step Count, and Cardiometabolic Health Markers: Findings From the Prospective Physical Activity, Sitting, and Sleep (ProPASS) Consortium
• Ladda ner fulltext (pdf) av Device-Measured Sleep Characteristics, Daily Step Count, and Cardiometabolic Health Markers: Findings From the Prospective Physical Activity, Sitting, and Sleep (ProPASS) Consortium

Development of a quantitative job exposure matrix for standing, walking, and forward bending among pregnant workers: The PRECISE JEM

Nørtoft Frankel, Hannah; Meulengracht Flachs, Esben; Sandal Sejbaek, Camilla; Aavang Petersen, Jonathan et al.

Ingår i Scandinavian Journal of Work, Environment and Health, s. 526-536, 2025

• DOI för Development of a quantitative job exposure matrix for standing, walking, and forward bending among pregnant workers: The PRECISE JEM
• Ladda ner fulltext (pdf) av Development of a quantitative job exposure matrix for standing, walking, and forward bending among pregnant workers: The PRECISE JEM

Free-living sit-to-stand angular velocity derived from thigh-worn accelerometry slows during pregnancy, but is not associated with binary self-reported discomfort prevalence

Pellerine, Liam P.; Frankel, Hannah Nortoft; Begtrup, Luise Molenberg; O'Brien, Myles W. et al.

Ingår i Gait & Posture, 2026

• DOI för Free-living sit-to-stand angular velocity derived from thigh-worn accelerometry slows during pregnancy, but is not associated with binary self-reported discomfort prevalence
• Ladda ner fulltext (pdf) av Free-living sit-to-stand angular velocity derived from thigh-worn accelerometry slows during pregnancy, but is not associated with binary self-reported discomfort prevalence

Development and evaluation of wrist- and thigh-worn accelerometer algorithms using self-training machine learning models for classification of activity type and posture: towards device placement-agnostic methods in the ProPASS consortium

Ahmadi, Matthew N.; Koemel, Nicholas; Biswas, Raaj; Holtermann, Andreas et al.

Ingår i International Journal of Behavioral Nutrition and Physical Activity, 2026

• DOI för Development and evaluation of wrist- and thigh-worn accelerometer algorithms using self-training machine learning models for classification of activity type and posture: towards device placement-agnostic methods in the ProPASS consortium
• Ladda ner fulltext (pdf) av Development and evaluation of wrist- and thigh-worn accelerometer algorithms using self-training machine learning models for classification of activity type and posture: towards device placement-agnostic methods in the ProPASS consortium

Changes in physical activity across retirement: a compositional data analysis approach in a Swedish cohort study

Sacco, Lawrence B; Högnäs, Robin S; Palarea-Albaladejo, Javier; Hettiarachchi, Pasan et al.

Ingår i European Review of Aging and Physical Activity, 2026

• DOI för Changes in physical activity across retirement: a compositional data analysis approach in a Swedish cohort study
• Ladda ner fulltext (pdf) av Changes in physical activity across retirement: a compositional data analysis approach in a Swedish cohort study

Device-Measured Sleep Characteristics, Daily Step Count, and Cardiometabolic Health Markers: Findings From the Prospective Physical Activity, Sitting, and Sleep (ProPASS) Consortium

Bian, Wenxin; Ahmadi, Matthew N.; Biswas, Raaj Kishore; Blodgett, Joanna M. et al.

Ingår i Circulation. Cardiovascular Quality and Outcomes, 2025

• DOI för Device-Measured Sleep Characteristics, Daily Step Count, and Cardiometabolic Health Markers: Findings From the Prospective Physical Activity, Sitting, and Sleep (ProPASS) Consortium
• Ladda ner fulltext (pdf) av Device-Measured Sleep Characteristics, Daily Step Count, and Cardiometabolic Health Markers: Findings From the Prospective Physical Activity, Sitting, and Sleep (ProPASS) Consortium

Development of a quantitative job exposure matrix for standing, walking, and forward bending among pregnant workers: The PRECISE JEM

Nørtoft Frankel, Hannah; Meulengracht Flachs, Esben; Sandal Sejbaek, Camilla; Aavang Petersen, Jonathan et al.

Ingår i Scandinavian Journal of Work, Environment and Health, s. 526-536, 2025

• DOI för Development of a quantitative job exposure matrix for standing, walking, and forward bending among pregnant workers: The PRECISE JEM
• Ladda ner fulltext (pdf) av Development of a quantitative job exposure matrix for standing, walking, and forward bending among pregnant workers: The PRECISE JEM

Validation and comparative study of the Motus system for accurately identifying movement behaviours using different sampling frequencies

Ludvigsen, Tonje Pedersen; Horluck, Sebastian Asmussen Sode; Larsen, Jon Roslyng; Lund, Christina Bach et al.

Ingår i Scientific Reports, 2025

• DOI för Validation and comparative study of the Motus system for accurately identifying movement behaviours using different sampling frequencies
• Ladda ner fulltext (pdf) av Validation and comparative study of the Motus system for accurately identifying movement behaviours using different sampling frequencies

Validation of sleep-wake estimation from thigh-worn accelerometers against polysomnography in adolescents with and without mental disorders

Wilms, Martin; Søndergaard, Anne; Jennum, Poul Jørgen; Johansson, Peter et al.

Ingår i BMC Psychiatry, 2025

• DOI för Validation of sleep-wake estimation from thigh-worn accelerometers against polysomnography in adolescents with and without mental disorders
• Ladda ner fulltext (pdf) av Validation of sleep-wake estimation from thigh-worn accelerometers against polysomnography in adolescents with and without mental disorders

Associations between daily composition of 24 h physical behavior with affective states and working memory

Le, Flora; Mattern, Viola; Johansson, Peter; Hettiarachchi, Pasan et al.

Ingår i Scientific Reports, 2025

• DOI för Associations between daily composition of 24 h physical behavior with affective states and working memory
• Ladda ner fulltext (pdf) av Associations between daily composition of 24 h physical behavior with affective states and working memory

Comparing Physical Activity Metrics From Different Placements of Thigh-Worn Accelerometers

Franzese, Fabio; Hettiarachchi, Pasan; Holtermann, Andreas; Ahmadi, Matthew et al.

Ingår i Journal for the Measurement of Physical Behaviour, 2025

• DOI för Comparing Physical Activity Metrics From Different Placements of Thigh-Worn Accelerometers
• Ladda ner fulltext (pdf) av Comparing Physical Activity Metrics From Different Placements of Thigh-Worn Accelerometers

Associations between knee pain and knee-loading physical activities at work and leisure: a cross-sectional study based on accelerometer measurements

Törnblom, Margareta; Haglund, Emma; Bremander, Ann; Nilsdotter, Anna et al.

Ingår i BMC Musculoskeletal Disorders, 2025

• DOI för Associations between knee pain and knee-loading physical activities at work and leisure: a cross-sectional study based on accelerometer measurements
• Ladda ner fulltext (pdf) av Associations between knee pain and knee-loading physical activities at work and leisure: a cross-sectional study based on accelerometer measurements

Device-Measured 24-Hour Movement Behaviors and Blood Pressure: A 6-Part Compositional Individual Participant Data Analysis in the ProPASS Consortium

Blodgett, Joanna M.; Ahmadi, Matthew N.; Atkin, Andrew J.; Pulsford, Richard M. et al.

Ingår i Circulation, s. 159-170, 2025

• DOI för Device-Measured 24-Hour Movement Behaviors and Blood Pressure: A 6-Part Compositional Individual Participant Data Analysis in the ProPASS Consortium
• Ladda ner fulltext (pdf) av Device-Measured 24-Hour Movement Behaviors and Blood Pressure: A 6-Part Compositional Individual Participant Data Analysis in the ProPASS Consortium

Assessing the criterion validity of the activPAL CREA v1.3 algorithm and ActiPASS 2023.12 software for detecting steps during a progressive treadmill-based laboratory protocol

Pellerine, Liam. P.; Courish, Molly K.; Petterson, Jennifer L.; Shivgulam, Madeline E. et al.

Ingår i Journal of Sports Sciences, s. 1951-1958, 2024

• DOI för Assessing the criterion validity of the activPAL CREA v1.3 algorithm and ActiPASS 2023.12 software for detecting steps during a progressive treadmill-based laboratory protocol

Assessing the Accuracy of Activity Classification Using Thigh-Worn Accelerometry: A Validation Study of ActiPASS in School-Aged Children

Lendt, Claas; Hettiarachchi, Pasan; Johansson, Peter; Duncan, Scott et al.

Ingår i Journal of Physical Activity and Health, s. 1092-1099, 2024

• DOI för Assessing the Accuracy of Activity Classification Using Thigh-Worn Accelerometry: A Validation Study of ActiPASS in School-Aged Children

Relationship of device measured physical activity type and posture with cardiometabolic health markers: pooled dose-response associations from the Prospective Physical Activity, Sitting and Sleep Consortium

Ahmadi, Matthew N.; Blodgett, Joanna M.; Atkin, Andrew J.; Chan, Hsiu-Wen et al.

Ingår i Diabetologia, s. 1051-1065, 2024

• DOI för Relationship of device measured physical activity type and posture with cardiometabolic health markers: pooled dose-response associations from the Prospective Physical Activity, Sitting and Sleep Consortium
• Ladda ner fulltext (pdf) av Relationship of device measured physical activity type and posture with cardiometabolic health markers: pooled dose-response associations from the Prospective Physical Activity, Sitting and Sleep Consortium

Longitudinal Associations between 24-h Movement Behaviors and Cardiometabolic Biomarkers: A Natural Experiment over Retirement

Suorsa, Kristin; Leskinen, Tuija; Gupta, Nidhi; Andersen, Lars l. et al.

Ingår i Medicine & Science in Sports & Exercise, s. 1297-1306, 2024

• DOI för Longitudinal Associations between 24-h Movement Behaviors and Cardiometabolic Biomarkers: A Natural Experiment over Retirement

Direct observations of X-rays produced by upward positive lightning

Oregel-Chaumont, Toma; Sunjerga, Antonio; Hettiarachchi, Pasan; Cooray, Vernon et al.

Ingår i Scientific Reports, 2024

• DOI för Direct observations of X-rays produced by upward positive lightning
• Ladda ner fulltext (pdf) av Direct observations of X-rays produced by upward positive lightning

Changes in Accelerometer-Measured Physical Activity and Sedentary Time Across Retirement Transition as a Predictor of Self-Rated Health

Fröberg, Andreas; Sacco, Lawrence; Suorsa, Kristin; Leskinen, Tuija et al.

Ingår i Journal of Physical Activity and Health, s. 778-786, 2024

• DOI för Changes in Accelerometer-Measured Physical Activity and Sedentary Time Across Retirement Transition as a Predictor of Self-Rated Health

Device-measured physical activity and cardiometabolic health: the Prospective Physical Activity, Sitting, and Sleep (ProPASS) consortium

Blodgett, Joanna M.; Ahmadi, Matthew N; Atkin, Andrew J; Chastin, Sebastien et al.

Ingår i European Heart Journal, s. 458-471, 2023

• DOI för Device-measured physical activity and cardiometabolic health: the Prospective Physical Activity, Sitting, and Sleep (ProPASS) consortium
• Ladda ner fulltext (pdf) av Device-measured physical activity and cardiometabolic health: the Prospective Physical Activity, Sitting, and Sleep (ProPASS) consortium

CHANGES IN PHYSICAL ACTIVITY, SEDENTARY TIME, AND SELF-RATED HEALTH ACROSS THE RETIREMENT TRANSITION

Westerlund, Hugo; Fröberg, Andreas; Sacco, Lawrence; Suorsa, Kristin et al.

Ingår i Innovation in Aging, s. 711-711, 2023

• DOI för CHANGES IN PHYSICAL ACTIVITY, SEDENTARY TIME, AND SELF-RATED HEALTH ACROSS THE RETIREMENT TRANSITION
• Ladda ner fulltext (pdf) av CHANGES IN PHYSICAL ACTIVITY, SEDENTARY TIME, AND SELF-RATED HEALTH ACROSS THE RETIREMENT TRANSITION

Moving Beyond the Characterization of Activity Intensity Bouts as Square Waves Signals

O'Brien, Myles; Petterson, Jennifer; Pellerine, Liam; Shivgulam, Madeline et al.

Ingår i Journal for the Measurement of Physical Behaviour, s. 162-167, 2023

• DOI för Moving Beyond the Characterization of Activity Intensity Bouts as Square Waves Signals

Step Length, But Not Stepping Cadence, Strongly Predicts Physical Activity Intensity During Jogging and Running

Pellerine, Liam P.; Petterson, Jennifer L.; Shivgulam, Madeline E.; Johansson, Peter et al.

Ingår i Measurement in Physical Education and Exercise Science, s. 352-361, 2023

• DOI för Step Length, But Not Stepping Cadence, Strongly Predicts Physical Activity Intensity During Jogging and Running

Modifications of 24-h movement behaviors to prevent obesity in retirement: a natural experiment using compositional data analysis

Suorsa, Kristin; Gupta, Nidhi; Leskinen, Tuija; Andersen, Lars L. et al.

Ingår i International Journal of Obesity, s. 922-930, 2023

• DOI för Modifications of 24-h movement behaviors to prevent obesity in retirement: a natural experiment using compositional data analysis
• Ladda ner fulltext (pdf) av Modifications of 24-h movement behaviors to prevent obesity in retirement: a natural experiment using compositional data analysis

Development and performance of a sleep estimation algorithm using a single accelerometer placed on the thigh: an evaluation against polysomnography

Johansson, Peter; Crowley, Patrick; Axelsson, John; Franklin, Karl et al.

Ingår i Journal of Sleep Research, 2023

• DOI för Development and performance of a sleep estimation algorithm using a single accelerometer placed on the thigh: an evaluation against polysomnography
• Ladda ner fulltext (pdf) av Development and performance of a sleep estimation algorithm using a single accelerometer placed on the thigh: an evaluation against polysomnography

The Surveillance of Physical Activity, Sedentary Behavior, and Sleep: Protocol for the Development and Feasibility Evaluation of a Novel Measurement System

Crowley, Patrick; Ikeda, Erika; Islam, Sheikh Mohammed Shariful; Kildedal, Rasmus et al.

Ingår i JMIR Research Protocols, 2022

• DOI för The Surveillance of Physical Activity, Sedentary Behavior, and Sleep: Protocol for the Development and Feasibility Evaluation of a Novel Measurement System
• Ladda ner fulltext (pdf) av The Surveillance of Physical Activity, Sedentary Behavior, and Sleep: Protocol for the Development and Feasibility Evaluation of a Novel Measurement System

Frequency spectra of various events pertinent to lightning cloud flashes obtained from wavelet transform technique and ratified by narrow band measurement technique

Sharma, S. R.; Ismail, Mohd Muzafar; Hettiarachchi, Pasan; Cooray, Vernon et al.

Ingår i Journal of Atmospheric and Solar-Terrestrial Physics, 2021

• DOI för Frequency spectra of various events pertinent to lightning cloud flashes obtained from wavelet transform technique and ratified by narrow band measurement technique

Validity of a Non-Proprietary Algorithm for Identifying Lying Down Using Raw Data from Thigh-Worn Triaxial Accelerometers

Hettiarachchi, Pasan; Aili, Katarina; Holtermann, Andreas; Stamatakis, Emmanuel et al.

Ingår i Sensors, 2021

• DOI för Validity of a Non-Proprietary Algorithm for Identifying Lying Down Using Raw Data from Thigh-Worn Triaxial Accelerometers
• Ladda ner fulltext (pdf) av Validity of a Non-Proprietary Algorithm for Identifying Lying Down Using Raw Data from Thigh-Worn Triaxial Accelerometers

Observations of X-rays from Laboratory Sparks in Air at Atmospheric Pressure under Negative Switching Impulse Voltages

Rahman, Mahbubur; Hettiarachchi, Pasan; Cooray, Vernon; Dwyer, Joseph et al.

Ingår i Atmosphere, 2019

• DOI för Observations of X-rays from Laboratory Sparks in Air at Atmospheric Pressure under Negative Switching Impulse Voltages
• Ladda ner fulltext (pdf) av Observations of X-rays from Laboratory Sparks in Air at Atmospheric Pressure under Negative Switching Impulse Voltages

High-Speed Video Observation of a Dart Leader Producing X-rays

Saba, M. M. F.; Ferro, M. A. S.; Cuactros, E. T.; Custodio, D. M. et al.

Ingår i Journal of Geophysical Research - Space Physics, s. 10564-10570, 2019

• DOI för High-Speed Video Observation of a Dart Leader Producing X-rays
• Ladda ner fulltext (pdf) av High-Speed Video Observation of a Dart Leader Producing X-rays

X-ray observations at Gaisberg Tower

Hettiarachchi, Pasan; Cooray, Vernon; Diendorfer, Gerhard; Pichler, Hannes et al.

Ingår i Atmosphere, 2018

• DOI för X-ray observations at Gaisberg Tower
• Ladda ner fulltext (pdf) av X-ray observations at Gaisberg Tower

Characteristics of leader pulses in positive ground flashes in Sweden

Johari, Dalina; Cooray, Vernon; Rahman, Mahbubur; Hettiarachchi, Pasan et al.

Ingår i Electric power systems research, s. 3-9, 2017

• DOI för Characteristics of leader pulses in positive ground flashes in Sweden

On the possible origin of chaotic pulse trains in lightning flashes

Ismail, Mohd Muzafar; Rahman, Mahbubur; Cooray, Vernon; Fernando, Mahendra et al.

Ingår i Atmosphere, 2017

• DOI för On the possible origin of chaotic pulse trains in lightning flashes
• Ladda ner fulltext (pdf) av On the possible origin of chaotic pulse trains in lightning flashes

X-rays from negative laboratory sparks in air: Influence of the anode geometry

Hettiarachchi, Pasan; Rahman, Mahbubur; Cooray, Vernon; Dwyer, Joseph

Ingår i Journal of Atmospheric and Solar-Terrestrial Physics, s. 190-194, 2017

• DOI för X-rays from negative laboratory sparks in air: Influence of the anode geometry

Energy Distribution of X-rays Produced by Meter-long Negative Discharges in Air

Hettiarachchi, Pasan; Cooray, Vernon; Rahman, Mahbubur; Dwyer, Joseph

Ingår i Atmosphere, 2017

• DOI för Energy Distribution of X-rays Produced by Meter-long Negative Discharges in Air

Features of the First and Subsequent Return Strokes in Positive Ground Flashes based on Electric Field Measurements

Johari, Dalina; Cooray, Vernon; Rahman, Mahbubur; Hettiarachchi, Pasan et al.

Ingår i Electric power systems research, s. 55-62, 2017

• DOI för Features of the First and Subsequent Return Strokes in Positive Ground Flashes based on Electric Field Measurements

Characteristics of preliminary breakdown pulses in positive ground flashes during summer thunderstorms in Sweden

Johari, Dalina; Cooray, Vernon; Rahman, Mahbubur; Hettiarachchi, Pasan et al.

Ingår i Atmosphere, 2016

• DOI för Characteristics of preliminary breakdown pulses in positive ground flashes during summer thunderstorms in Sweden
• Ladda ner fulltext (pdf) av Characteristics of preliminary breakdown pulses in positive ground flashes during summer thunderstorms in Sweden

On the occurrence of ‘bead lightning’ phenomena in long laboratory sparks

Vayanganie, S.P.A.; Cooray, Vernon; Rahman, Mahbubur; Hettiarachchi, Pasan et al.

Ingår i Physics Letters A, s. 816-821, 2016

• DOI för On the occurrence of ‘bead lightning’ phenomena in long laboratory sparks

On the characteristics of positive lightning ground flashes in Sweden

Baharudin, Zikri Abadi; Cooray, Vernon; Rahman, Mahbubur; Hettiarachchi, Pasan et al.

Ingår i Journal of Atmospheric and Solar-Terrestrial Physics, s. 106-111, 2016

• DOI för On the characteristics of positive lightning ground flashes in Sweden

Experimental study of leader tortuosity and velocity in long rod-plane air discharges

Diaz, Oscar; Hettiarachchi, Pasan; Rahman, Mahbubur; Cooray, Vernon et al.

Ingår i IEEE transactions on dielectrics and electrical insulation, s. 806-812, 2016

• DOI för Experimental study of leader tortuosity and velocity in long rod-plane air discharges

Electric field signatures in wideband, 3 MHz and 30 MHz of negative ground flashes pertinent to Swedish thunderstorms

Ismail, Mohd Muzafar; Rahman, Mahbubur; Cooray, Vernon; Sharma, Shriram et al.

Ingår i Atmosphere, s. 1904-1925, 2015

• DOI för Electric field signatures in wideband, 3 MHz and 30 MHz of negative ground flashes pertinent to Swedish thunderstorms
• Ladda ner fulltext (pdf) av Electric field signatures in wideband, 3 MHz and 30 MHz of negative ground flashes pertinent to Swedish thunderstorms

Latitude Dependence of Narrow Bipolar Pulse Emissions

Ahmad, Mohd Riduan; Mohd Esa, Mona Riza; Cooray, Vernon; Baharudin, Zikri Abadi et al.

Ingår i Journal of Atmospheric and Solar-Terrestrial Physics, s. 40-45, 2015

• DOI för Latitude Dependence of Narrow Bipolar Pulse Emissions

Measurements of X-Ray Emission from Laboratory Sparks and Upward Initiated Lightning

Hettiarachchi, Pasan

2018

• Ladda ner fulltext (pdf) av Measurements of X-Ray Emission from Laboratory Sparks and Upward Initiated Lightning

Basic electromagnetic theory - a summary

Cooray, Vernon; Hettiarachchi, Pasan; Cooray, Gerald

Ingår i Lightning Electromagnetics, The Institution of Engineering and Technology, 2012

• DOI för Basic electromagnetic theory - a summary

Attachment process of the discharge of competing grounded electrodes - Experimental observations and modeling

Arevalo, Liliana; Lobato, André; Cooray, Vernon; Hettiarachchi, Pasan et al.

Ingår i 2021 35th International Conference on Lightning Protection (ICLP) and XVI International Symposium On Lightning Protection (SIPDA), 2021

• DOI för Attachment process of the discharge of competing grounded electrodes - Experimental observations and modeling

Observations of X-rays in 4-meters long laboratory sparks under positive lightning impulse

Wooi, Chin-Leong; Hettiarachchi, Pasan; Rahman, Mahbubur; Cooray, Vernon et al.

Ingår i 2021 35TH INTERNATIONAL CONFERENCE ON LIGHTNING PROTECTION (ICLP) AND XVI INTERNATIONAL SYMPOSIUM ON LIGHTNING PROTECTION (SIPDA), 2021

• DOI för Observations of X-rays in 4-meters long laboratory sparks under positive lightning impulse

The leader propagation velocity in long air gaps

Arevalo, Liliana; Wu, Dong; Hettiarachchi, Pasan; Cooray, Vernon et al.

Ingår i 2018 34th international conference on lightning protection (ICLP 2018), 2018

• DOI för The leader propagation velocity in long air gaps

Time Domain Analysis of the Lightning Interaction with Wave Energy Converters

Hettiarachchi, Pasan; Lobato, André; Cooray, Vernon; Leijon, Mats

Ingår i 2018 34th international conference on lightning protection (ICLP 2018), 2018

Impedance Behavior of Earth Enhancing Compound Under Lightning Transient Conditions

Chandimal, A. P. L.; Hettiarachchi, Pasan; Nanayakkara, S.; Sapumanage, N. et al.

Ingår i 2018 34th international conference on lightning protection (ICLP 2018), 2018

Study on responses of SPDs against the transient voltages generated by CG flashes

Sapumanage, Nilantha; Nanayakkara, Sankha; Abeygunawardena, Sidath; Chandimal, Lasantha et al.

2018

Characteristics of chaotic pulse trains associated with dart and dart-stepped leader in lightning flashes in Sweden

Ismail, Muzafar M.; Rahman, Mahbubur; Cooray, Vernon; Hettiarachchi, Pasan et al.

2017

Wavelet transform reveals the origin of chaotic pulse train in lightning flashes

Ismail, Muzafar M.; Cooray, Vernon; Rahman, Mahbubur; Hettiarachchi, Pasan et al.

2017

Some features of preliminary breakdown pulses in positive ground flashes in Sweden

Johari, Dalina; Cooray, Vernon; Rahman, Mahbubur; Hettiarachchi, Pasan et al.

2017

Some characteristics of subsequent return strokes in positive ground flash in Sweden

Johari, Dalina; Cooray, Vernon; Rahman, Mahbubur; Hettiarachchi, Pasan et al.

2016

The study of lightning strikes to common buildings in Brazil

Saba, Marcelo; Naccarato, Kleber; de Paiva, Amanda R; Schumann, Carina et al.

2016

Production of X-rays in air gaps stressed by switching impulse voltages

Rahman, Mahbubur; Hettiarachchi, Pasan; Cooray, Vernon; Dwyer, J. R. et al.

2016

Fractal analysis of long laboratory sparks of high speed video recordings

Vayanganie, Amila; Gunasekara, Lasitha; Fernando, Mahendra; Sonnadara, Upul et al.

2016

On comparison between initial breakdown pulses and narrow bipolar pulses in lightning discharges with special attention to electric field derivative characteristics

Ismail, Muzafar; Cooray, Vernon; Rahman, Mahbubur; Hettiarachchi, Pasan et al.

2016

Special attention to impedance of conductivity enhancing backfill materials

Chandimal, APL; Hettiarachchi, Pasan; Nanayakkara, Sankha; Cooray, Vernon et al.

2016

Some characteristics of leader pulses in positive cloud-to-ground flashes

Johari, Dalina; Cooray, Vernon; Hettiarachchi, Pasan; Rahman, Mahbubur et al.

Ingår i 2015 International Symposium On Lightning Protection (Xiii SIPDA), s. 283-287, 2015

• DOI för Some characteristics of leader pulses in positive cloud-to-ground flashes

On the possible origin of chaotic pulse trains in lightning flashes

Ismail, Muzafar M.; Cooray, Vernon; Hettiarachchi, Pasan; Rahman, Mahbubur et al.

Ingår i 2015 International Symposium on Lightning Protection (XIII SIPDA), Balneário Camboriú, Brazil, 28th Sept. – 2nd Oct. 2015., s. 409-412, 2015

HF and VHF electric field radiation produced by preliminary breakdown process pertinent to Swedish thunderstorms

Ismail, M. M.; Sharma, S. R.; Cooray, Vernon; Hettiarachchi, P. et al.

Ingår i 2015 Asia-Pacific International Conference on Lightning (APL), Nagoya, Japan, 2015

X-rays from long laboratory sparks: Influence of the anode geometry

Hettiarachchi, Pasan; Rahman, Mahbubur; Cooray, Vernon

Ingår i International Conference on Atmospheric Electricity ICAE 2014, Norman, OK, U.S.A., 2014

Preliminary Observations of Lightning Signature At 2400 MHz in Sweden Thunderstorm

Ahmad, Mohd Riduan; Mohd Esa, Mona Riza Binti; Hettiarachchi, Pasan; Cooray, Vernon

s. 88-91, 2012

• DOI för Preliminary Observations of Lightning Signature At 2400 MHz in Sweden Thunderstorm

Electric Field Signature of Narrow Bipolar Pulse Observed in Sweden

Ahmad, Mohd Riduan; Mohd Esa, Mona Riza; Cooray, Vernon; Hettiarachchi, Pasan et al.

2014

Electric field changes generated by preliminary breakdown pulse for positive lightning ground flashes in Sweden

Baharudin, Zikri Abadi; Cooray, Vernon; Rahman, Mahbubur; Hettiarachchi, Pasan et al.