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Times Series Building Energy Systems data Imputation

T.B. Salcedo Rahola (Docent); Juliën van der Niet (Student); MIchiel Weij (Student); Ramon Isaac van der Elst (Student)

Completeness of data is vital for the decision making and forecasting on Building Management Systems (BMS) as missing data can result in biased decision making down the line. This study creates a guideline for imputing the gaps in BMS datasets by comparing four methods: K Nearest Neighbour algorithm …

2022Techniek; …Conferentiebijdrage

Obtaining wheelchair kinematics with one sensor only? The trade-off between number of inertial sensors and accuracy for measuring wheelchair mobility performance in sports

Marit P. van Dijk (Onderzoeker); Rienk van der Slikke (Lid Lectoraat); Rob Rupf (Onderzoeker); Marco J.M. Hoozemans (Onderzoeker); M.A.M. (Monique) Berger (Lector); H.E.J. Veeger (Onderzoeker)

In wheelchair sports, the use of Inertial Measurement Units (IMUs) has proven to be one of the most accessible ways for ambulatory measurement of wheelchair kinematics. A three-IMU configuration, with one IMU attached to the wheelchair frame and two IMUs on each wheel axle, has previously shown accurate …

2021-11-23Recreatie, Beweging & Sport; …Artikel

Machine learning to improve orientation estimation in sports situations challenging for inertial sensor use

Marit P. van Dijk (Onderzoeker); Manon Kok (Onderzoeker); M.A.M. (Monique) Berger (Lector); Marco J.M. Hoozemans (Onderzoeker); Dirkjan Veeger (Onderzoeker)

In sports, inertial measurement units are often used to measure the orientation of human body segments. A Madgwick (MW) filter can be used to obtain accurate inertial measurement unit (IMU) orientation estimates. This filter combines two different orientation estimates by applying a correction of the …

2021-09-24Recreatie, Beweging & Sport; …Artikel

Betrouwbaarheid en validiteit van het testen van het uithoudingsvermogen bij mensen met een unilaterale amputatie aan de onderste extremiteit

Gerrita Dasselaar (Student); Martin Brouwer (Begeleider)

Wereldwijd vinden jaarlijks zes tot 31 beenamputaties plaats per 100.000 mensen, in de toekomst zal dit naar alle waarschijnlijkheid toenemen. Het uithoudingsvermogen is een belangrijke indicator of mensen met een amputatie uiteindelijk met een prothese gaan lopen, omdat het lopen met een prothese meer …

2021-06-04GezondheidBachelor

Reproducibility of Different Methodologies to Calculate Oxygen Consumption and Oxygen Cost During Walking in Chronic Stroke Survivors

Tim Blatter (Lid Lectoraat); Jacqueline Outermans (Lid Lectoraat); Michiel Punt (Lid Lectoraat); Harriët Wittink (Lector)

Objective: The most common methods to calculate energy costs are based on measured oxygen uptake during walking a standardized distance or time. Unfortunately, it is unclear which method is most reliable to determine energy cost of walking in stroke survivors. The objective of this study was to evaluate …

2020GezondheidArtikel

Validity and reliability of serratus anterior hand held dynamometry

J Ijspeert; Hans Kerstens; R. Janssen; A.C.H. Geurts; N. van Alfen; JT Groothuis

Background Strength testing of the serratus anterior muscle with hand held dynamometry (HDD) in supine subjects has low reproducibility, and is influenced by compensatory activity of other muscles like the pectoralis major and upper trapezius. Previously, two manual maximum voluntary isometric contraction …

2020AlgemeenArtikel

The NIH minimal dataset for chronic low back pain: responsiveness and minimal

Dutmer, A (Alisa) (Researcher); Reneman, MF (Michiel) (Professor); Schiphorst Preuper, HF (Rita) (Phd); Wolff, AP (Andre) (Professor); Speijer, LGN (Bert); Soer, R (Remko) (Associatelector)

CC-BY-NC-NDSTUDY DESIGN:prospective cohort study.OBJECTIVE:To analyze responsiveness and minimal clinically important change (MCIC) of the US National Institutes of Health (NIH) minimal dataset for chronic low back pain (CLBP).SUMMARY OF BACKGROUND DATA:The NIH minimal dataset is a 40-item questionnaire …

2019-05-01AlgemeenPreprint

Speeding up the optimization process for Transition Edge Sensors

Gerwin Verkerk (Student)

SRON is the Dutch national expertise institute for scientific space research and is part of NWO. It plays an important role in delivering contributions to the national and international space-research communities. Currently one of SRON’s involvements is in the X-IFU instrument for the Athena space X-ray …

2019TechniekBachelor

Zijn de sit-to-stand parameters van de MoveTest valide?

Sietze de Haan (Student); Rienk van der Slikke; Aad Lagerberg

De MoveTest is een analyse systeem dat gebruikt wordt om veelgebruikte klinische testen geïnstrumenteerd uit te voeren. De metingen van de MoveTest worden afgenomen met een inertial measurement unit (IMU). De IMU wordt met een elastische band op de onderrug bevestigd en bevat een 3-assige acccelerometer, …

2019GezondheidBachelor

Psychometric properties of the MyotonPRO in dementia patients with paratonia

Drenth, Hans; Zuidema, Sytse U; Krijnen, Wim P (Statistical Techniques For Applied Research); Bautmans, Ivan; van der Schans, Cees (Healthy Ageing, Allied Health Care And Nursing); Hobbelen, Hans (Ageing And Allied Health Care)

BACKGROUND: Paratonia is a distinctive form of hypertonia, causing loss of functional mobility in early stages of dementia to severe high muscle tone and pain in the late stages. For assessing and evaluating therapeutic interventions, objective instruments are required. OBJECTIVE: Determine the psychometric …

2018-06-01AlgemeenArtikel

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