Verden står ovenfor store klimaendringer og klimagassmengden fortsetter å øke. For å begrense økning av gjennomsnittstemperaturen må tiltak iverksettes for å redusere utslippene. Betong er det mest anvendte byggematerialet i verden og det brukes dobbelt så mye betong enn andre byggematerialer til sammen. Sementproduksjon antas å bidra til 7-8 prosent av klimagassutslipp på verdensbasis. Betong ...

Interactive computer based geometry editing is very useful for designers and artists. Our goal has been to develop useful tools for geometry editing in a way that increases the ability for creative design. When we interactively editing geometry, we want to see the change happening gradually and smoothly on the screen. Pre-evaluation is a tool for increasing the speed of the graphics when doing ...

Each year about a third of the elderly aged 65 or older experience a fall. Many of these falls could be avoided if fall risk assessment and prevention tools where available in the daily living situation. Such tools would need to use the current context as input to predict an imminent fall. This paper presents an approach predicting imminent falls using data from a roof-mounted infrared array combined ...

I den norske byggebransjen i dag er det lite samsvar mellom tilbud og etterspørsel av boliger, og det er dermed behov for økt effektivisering av byggebransjen. Prefabrikasjon som byggemetode har potensiale til å bidra til å øke effektiviteten i bygg- og anleggsnæringen, sett opp mot tradisjonell plassbygd metode. Denne artikkelen har dermed gjennomført en sammenligning av de positive og negative ...

This paper presents preliminary results on how to perform waypoint tracking with spacecraft with actuator constraints. It considers a simplified spacecraft model and can be considered a deep space model, and shows how to perform waypoint tracking with only one main thruster together with full attitude control. As the spacecraft reaches close to the waypoint during a deceleration phase that makes the ...

This study investigates transformations of a pre-mechanically activated saponite-containing material with subsequent high-temperature treatment. The thermogravimetric analysis confirmed that the mechanical activation of saponite leads to the destruction of its layered structure, accompanied by the release of silicon dioxide and magnesium oxide in free form. The values of surface activity for ...

Dependency of human activities on electricity supply goes from emergency services to comfort aspects. Reliability of electricity distribution systems is a complex problem to tackle, especially when the systems are located at cold climate regions, dealing with ice accretion on the elements of the electrical systems and its consequences become a priority to be included in maintenance maneuvers in order ...

In this paper, the inhibitory effects of added hydrogen in reactor headspace on fermentative hydrogen production from acidogenesis of glucose by a bacterium, Clostridium acetobutylicum, was investigated experimentally in a batch reactor. It was observed that hydrogen itself became an acute inhibitor of hydrogen production if it accumulated excessively in the reactor headspace. A mathematical model ...

A crucial aspect of the supply chain network design process is deciding on optimal locations to situate new facilities. Facility location decisions rely on many factors, some of which might be conflicting with each other. The decision factors can be either quantitative or qualitative, thus a brute-force prioritization of one over another could be detrimental overall. To ensure the efficacy of the ...

This paper is devoted to investigating the sequence of some linear functionals in the space BV of finite variation functions. We prove that under certain conditions this sequence is bounded. We also prove that this result is sharp. In particular, the obtained results can be used to study convergence of some general Fourier series. Moreover, the obtained conditions seem to be new and useful also for ...