Measuring handrim wheelchair propulsion in the lab: A critical analysis of stationary ergometers

There are many ways to simulate handrim wheelchair propulsion in the laboratory. Ideally, these would be able to, at least mechanically, simulate field conditions. This narrative review provides an overview of the lab-based equipment used in published research and critically assesses their ability to simulate and measure wheelchair propulsion...

Technical note: a novel servo-driven dual-roller handrim wheelchair ergometer

The measurement of handrim wheelchair propulsion characteristics and performance in the field is complicated due to the non-stationary nature of wheelchair driving. In contrast, the laboratory provides a constrained and standardisable environment to conduct measurements and experiments. Apart from wheelchair treadmills, dynamometers or...

Determining and Controlling External Power Output During Regular Handrim Wheelchair Propulsion

The use of a manual wheelchair is critical to 1% of the world's population. Human powered wheeled mobility research has considerably matured, which has led to improved research techniques becoming available over the last decades. To increase the understanding of wheeled mobility performance, monitoring, training, skill acquisition, and...

General framework for transfer path analysis: History, theory and classification of techniques

Transfer Path Analysis (TPA) designates the family of test-based methodologies to study the transmission of mechanical vibrations. Since the first adaptation of electric network analogies in the field of mechanical engineering a century ago, a multitude of TPA methods have emerged and found their way into industrial development processes....

Dynamic response characterization of complex systems through operational identification and dynamic substructuring- An application to gear noise propagation in the automotive industry

This thesis deals with new methods, which can determine the dynamic response of a complex system identified in operation, based on the knowledge of its subsystem dynamics and excitation. In the first part of this thesis, the identification of component excitation and its transmission into the total system will be addressed. The identification of...

Bouwen aan de hofstad; De geschiedenis van het bouwtoezicht in Den haag 1250-1900, in sociaal en cultureel perspectief

Bezinken van zand in hopperzuigers: Invloed van turbulentie en korrelverdeling

BESTAND A BEVAT HET HOOFDRAPPORT EN BESTAND B BEVAT DE BIJLAGEN Voor het optimaal beladen van sleephopperzuigers is het belangrijk om inzicht te hebben in de processen die plaats hebben in het beun van een sleephopperzuiger. Een van de deel-processen is het bezinken van zand in een hoog geconcentreerd zandwater mengsel onder invloed van...

Ruimtelijke verkenningen: Drie schetsen voor de toekomstige inrichting van Nederland

In opdracht van Wetenschappelijke Raad voor het Regeringsbeleid, Den Haag en Instituut voor Sociale Geografie, Amsterdam