Determination of key design parameters of a scooter-walker hybrid in scooter mode

A new type of mobility device that functions as both a walker and a scooter is being developed to address some issues of current mobility solutions. Some key design parameters for the scooter mode of this scooter-walker hybrid must be optimized. Through literature, a number of simulated "tests", mostly about safety and manoeuvrability, are...

Worldwide analysis of the limiting efficiency of 2-junction solar cells

As the efficiency of silicon (Si) photovoltaic (PV) moves ever closer to the theoretical limit, 2-junction PV becomes increasingly interesting. Since PV cells are tested under standard test conditions (STC), but real world working conditions differ, it is interesting to see how 2-junction PV performs worldwide in different climates. Worldwide...

Constructed Tidal Marshes: An analysis on how model configurations influence accretion

Along river banks, on the transition zone between the river and see, tidal marshes can develop. The tidal marshes accommodate multiple plant and fish species. As a result of the stressful conditions in tidal marshes, unique intertidal ecology develops. However, due to the densifying of the river banks, tidal marshes are disappearing. <br/...

Degrees of Adaptability: A design Framework for Adaptable Real Estate Transformation Projects

Context: The majority of buildings are designed as static objects, in order to serve a specific goal, a specific function. Although, this does not match to the contemporary and constantly changing way of living and working. Moreover, it does not match with the evolving technology, economy and culture. Thus, buildings that cannot respond to the...

Optimal Vertical Extension: A study on costs and environmental impact for structural engineers

The motivation to adapt a building in terms of an upward vertical extension lies within the need for urban renewable programs. Although this practice has significant supports to make the built environment more sustainable, there are also barriers which invariably concern costs. In the case of vertical extension projects, the constructional and...

Energy efficient building technologies in hot and humid climates

This study explores energy efficient building technologies, specifically in hot and humid climates. The study focuses on optimization of design parameters and climate-based indoor temperature standards. Previous studies in the energy efficiency in buildings in hot and humid climates used the PMV-Fanger Model as a reference for the indoor thermal...