Pasan Hettiarachchi
Senior research engineer at Department of Medical Sciences; Occupational and Environmental Medicine
- Mobile phone:
- +46 76 072 95 77
- E-mail:
- pasan.hettiarachchi@medsci.uu.se
- Visiting address:
- Dag Hammarskjölds väg 60
752 37 UPPSALA - Postal address:
- Arbets- & miljömedicin, Akademiska sjukhuset
751 85 UPPSALA
Researcher at Department of Electrical Engineering; Division of Electricity
- Mobile phone:
- +46 76 072 95 77
- E-mail:
- pasan.hettiarachichi@angstrom.uu.se
- Visiting address:
- Ångströmlaboratoriet, Lägerhyddsvägen 1
752 37 Uppsala - Postal address:
- Box 65
751 03 UPPSALA
More information is available to staff who log in.
Short presentation
PH is an experimental physicist with a PhD in physics of electrical discharges. Currently he works as a principal research engineer at the division of Occupational and Environmental Medicine. His primary research area is Ergonomics. He is specialised in algorithm development related to physical activity, sedentary behaviour, sleep, physical load, body postures, etc.. PH is the author or co-author of around 50 scientific papers published in peer-reviewed journals and conference proceedings.
Publications
Selection of publications
- Development and performance of a sleep estimation algorithm using a single accelerometer placed on the thigh: an evaluation against polysomnography (2023)
- The Surveillance of Physical Activity, Sedentary Behavior, and Sleep (2022)
- Attachment process of the discharge of competing grounded electrodes - Experimental observations and modeling (2021)
- Validity of a Non-Proprietary Algorithm for Identifying Lying Down Using Raw Data from Thigh-Worn Triaxial Accelerometers (2021)
- Frequency spectra of various events pertinent to lightning cloud flashes obtained from wavelet transform technique and ratified by narrow band measurement technique (2021)
- Observations of X-rays in 4-meters long laboratory sparks under positive lightning impulse (2021)
- Observations of X-rays from Laboratory Sparks in Air at Atmospheric Pressure under Negative Switching Impulse Voltages (2019)
- High-Speed Video Observation of a Dart Leader Producing X-rays (2019)
- The leader propagation velocity in long air gaps (2018)
- Measurements of X-Ray Emission from Laboratory Sparks and Upward Initiated Lightning (2018)
- X-ray observations at Gaisberg Tower (2018)
- Time Domain Analysis of the Lightning Interaction with Wave Energy Converters (2018)
- Energy Distribution of X-rays Produced by Meter-long Negative Discharges in Air (2017)
- X-rays from negative laboratory sparks in air (2017)
- Experimental study of leader tortuosity and velocity in long rod-plane air discharges (2016)
- Production of X-rays in air gaps stressed by switching impulse voltages (2016)
- The study of lightning strikes to common buildings in Brazil (2016)
- Fractal analysis of long laboratory sparks of high speed video recordings (2016)
- On the occurrence of ‘bead lightning’ phenomena in long laboratory sparks (2016)
- X-rays from long laboratory sparks: Influence of the anode geometry (2014)
Recent publications
- Assessing the Accuracy of Activity Classification Using Thigh-Worn Accelerometry: A Validation Study of ActiPASS in School-Aged Children (2024)
- Longitudinal Associations between 24-h Movement Behaviors and Cardiometabolic Biomarkers (2024)
- Device-measured physical activity and cardiometabolic health (2023)
- Development and performance of a sleep estimation algorithm using a single accelerometer placed on the thigh: an evaluation against polysomnography (2023)
- Moving Beyond the Characterization of Activity Intensity Bouts as Square Waves Signals (2023)
All publications
Articles
- Assessing the Accuracy of Activity Classification Using Thigh-Worn Accelerometry: A Validation Study of ActiPASS in School-Aged Children (2024)
- Longitudinal Associations between 24-h Movement Behaviors and Cardiometabolic Biomarkers (2024)
- Device-measured physical activity and cardiometabolic health (2023)
- Development and performance of a sleep estimation algorithm using a single accelerometer placed on the thigh: an evaluation against polysomnography (2023)
- Moving Beyond the Characterization of Activity Intensity Bouts as Square Waves Signals (2023)
- Step Length, But Not Stepping Cadence, Strongly Predicts Physical Activity Intensity During Jogging and Running (2023)
- Modifications of 24-h movement behaviors to prevent obesity in retirement (2023)
- CHANGES IN PHYSICAL ACTIVITY, SEDENTARY TIME, AND SELF-RATED HEALTH ACROSS THE RETIREMENT TRANSITION (2023)
- The Surveillance of Physical Activity, Sedentary Behavior, and Sleep (2022)
- Validity of a Non-Proprietary Algorithm for Identifying Lying Down Using Raw Data from Thigh-Worn Triaxial Accelerometers (2021)
- Frequency spectra of various events pertinent to lightning cloud flashes obtained from wavelet transform technique and ratified by narrow band measurement technique (2021)
- Observations of X-rays from Laboratory Sparks in Air at Atmospheric Pressure under Negative Switching Impulse Voltages (2019)
- High-Speed Video Observation of a Dart Leader Producing X-rays (2019)
- X-ray observations at Gaisberg Tower (2018)
- Energy Distribution of X-rays Produced by Meter-long Negative Discharges in Air (2017)
- X-rays from negative laboratory sparks in air (2017)
- On the possible origin of chaotic pulse trains in lightning flashes (2017)
- Features of the First and Subsequent Return Strokes in Positive Ground Flashes based on Electric Field Measurements (2017)
- Characteristics of leader pulses in positive ground flashes in Sweden (2017)
- On the characteristics of positive lightning ground flashes in Sweden (2016)
- Experimental study of leader tortuosity and velocity in long rod-plane air discharges (2016)
- Characteristics of preliminary breakdown pulses in positive ground flashes during summer thunderstorms in Sweden (2016)
- On the occurrence of ‘bead lightning’ phenomena in long laboratory sparks (2016)
- Latitude Dependence of Narrow Bipolar Pulse Emissions (2015)
- Electric field signatures in wideband, 3 MHz and 30 MHz of negative ground flashes pertinent to Swedish thunderstorms (2015)
- Electric Field Signature of Narrow Bipolar Pulse Observed in Sweden (2014)
- Electric field changes generated by preliminary breakdown pulse for positive lightning ground flashes in Sweden
Books
Chapters
Conferences
- Attachment process of the discharge of competing grounded electrodes - Experimental observations and modeling (2021)
- Observations of X-rays in 4-meters long laboratory sparks under positive lightning impulse (2021)
- The leader propagation velocity in long air gaps (2018)
- Impedance Behavior of Earth Enhancing Compound Under Lightning Transient Conditions (2018)
- Time Domain Analysis of the Lightning Interaction with Wave Energy Converters (2018)
- Study on responses of SPDs against the transient voltages generated by CG flashes (2018)
- Wavelet transform reveals the origin of chaotic pulse train in lightning flashes (2017)
- Characteristics of chaotic pulse trains associated with dart and dart-stepped leader in lightning flashes in Sweden (2017)
- Some features of preliminary breakdown pulses in positive ground flashes in Sweden (2017)
- Special attention to impedance of conductivity enhancing backfill materials (2016)
- On comparison between initial breakdown pulses and narrow bipolar pulses in lightning discharges with special attention to electric field derivative characteristics (2016)
- Some characteristics of subsequent return strokes in positive ground flash in Sweden (2016)
- Production of X-rays in air gaps stressed by switching impulse voltages (2016)
- The study of lightning strikes to common buildings in Brazil (2016)
- Fractal analysis of long laboratory sparks of high speed video recordings (2016)
- HF and VHF electric field radiation produced by preliminary breakdown process pertinent to Swedish thunderstorms (2015)
- On the possible origin of chaotic pulse trains in lightning flashes (2015)
- Some characteristics of leader pulses in positive cloud-to-ground flashes (2015)
- X-rays from long laboratory sparks: Influence of the anode geometry (2014)
- Preliminary Observations of Lightning Signature At 2400 MHz in Sweden Thunderstorm (2012)
