Capability factors in changing patterns of international knowledge relationships of university spin-off firms in Northwest Europe

Industrial competence is increasingly dispersed across the globe, urging technology-based firmsin Europe to establish international knowledge relationships, sometimes even at larger distances.This paper examines patterns of international knowledge relationships and the influence ofcapability factors of university spin-off firms on building such...

Three Ways of Assessing the Inertial Biomechanics of a Cyclist's Leg

Due to the complexity of joints and the difficulty to get accurate position measurements, most biomechanical analyses regarding cycling are based on some basic assumptions. For instance, a fixed distance is often set between the hip joint and the seat. Sometimes, this joint is considered to be coincident with the line of the seat-tube. Other...

The effect of directional inertias added to pelvis and ankle on gait

Background Gait training robots should display a minimum added inertia in order to allow normal walking. The effect of inertias in specific directions is yet unknown. We set up two experiments to assess the effect of inertia in anteroposterior (AP) direction to the ankle and AP and mediolateral (ML) direction to the pelvis. Methods We developed...

Speeding Up Energy Transitions: Gaming Towards Sustainability in The Dutch Built Environment

The built environment accounts for the largest proportion (approximately 40%) of energy consumption in most countries and consumption levels are still rising. This significant proportion makes it an essential sector to address in the sustainable transitions agenda. In the Netherlands, it is generally accepted that the energy transition of the...

Speeding Up Energy Transitions: Gaming Towards Sustainability in The Dutch Built Environment

The paper explores the relevance and use of games for speeding up the energy transition in the Dutch built environment. Since the transition of the Dutch energy system with the current policies is much slower than required given the urgency of the foreseeable problems and the substantive system delays. There seems to be a need for...

Implementation of innovation: The inertia of implementing the open building concept in practice

The Open Building concept has been developed half a century ago. Despite the relative potential advantages to society, this concept of Open Building has not been widely implemented in the construction industry. Consequently, it did not lead to a general new approach of designing structures. Why does the construction industry use the Open...

Inertia in travel choice: The role of risk aversion and learning

This paper contributes to literature by showing how travellers that make normatively rational choices exhibit inertia during a series of risky choices. Our analyses complement other studies that conceive inertia as the result of boundedly rational or even non-deliberate, habitual decision-making. We start by presenting a model of risky travel...

Limitations in variable conductance heat pipe performance and control predicted by the current steady-state model developed at NLR

A uniaxial model for the transient performance of gas-loaded variable conductance heat pipes is being developed, partly under contract with the Netherlands Agency for Aerospace Programs NIVR. The model has to be easily implementable in existing spacecraft thermal analyzer computer programs. So far, a steady-state version of the model is...

Uniaxial model for gas-loaded variable conductance heat pipe performance : the effects of vapour flow friction and inertia

Uniaxial model for a gas loaded variable conductance heat pipe

A new uniaxial model for a gas loaded variable conductance heat pipe (VCHP) is developed. This model takes into account the diffusion at the vapour-gas interface as well as the inertial effects of the moving vapour. Only steady-state conditions are considered. The generally accepted Edwards /Marcus model will be shown to be a first order...