Viser treff 1-10 av 96
Heavy multi-pass TIG welding
(Master thesis; Mastergradsoppgave, 2017-05-23)
This study aims to find the maximum, usable, feed limit at different arc-energies and use the findings in multi-pass welding planning for robotic welding, taking into consideration the high controllability of robot movements. A combined studies using numerical analyses and practical experiments to calculate the feed limits for different arc energies. Each weld where analysed both mathematical, ...
A Carbon-Constrained Stochastic Optimization Model with Augmented Multi-Criteria Scenario-Based Risk-Averse Solution for Reverse Logistics Network Design under Uncertainty
(Journal article; Peer reviewed, 2017-07-10)
With the increase of the concern from the public for environmental pollution and waste of resources, the value recovery through reuse, repair, remanufacturing and recycling from the end-of-use (EOU) and end-of-life (EOL) products have become increasingly important. Reverse logistics is the process for capturing the remaining value from the EOU and EOL products and also for the proper disposal of the ...
Detection of Red Dye in Diesel Oil
(Journal article; Tidsskriftartikkel; Peer reviewed, 2017)
Developing a sensitive and effective instrument for detecting the presence of red dye in diesel fuel is very advantageous for governments in preventing tax loss by controlling illegal use of the diesel fuel. The objective of this work has been to investigate and develop an instrument to detect red dye in diesel, based on the principle of absorption. The peaks of absorption in red and pure diesel ...
Efficient Distributed Localization Algorithm for Ownership Identification of Reindeer Calf Using Wireless Sensor Networks
(Journal article, 2017)
This paper presents a distributed algorithm for identifying the ownership of new-born reindeer calves using wireless sensor networks (WSNs). Reindeer are semi wild animals giving birth while in the wild. Although reindeer cows usually carry identification tags or signs of their owners, it is difficult to identify the ownership of the calves within a mixed herd. Currently, identification is performed ...
Multisensor video magnification
(Master thesis; Mastergradsoppgave, 2017-06-13)
This study was performed with the three main goals. The first of which includes the implementation of “Eulerian Video Magnification” for the normal videos to observe the subtle changes that cannot be seen through the naked eyes. The second goal was to implement interpolation on thermal infrared videos. Finally, the third goal is to combine both the videos to amplify complex variations to reveal ...
Ventilation & Air Conditioning Technology - Educational
(Master thesis; Mastergradsoppgave, 2017-06-08)
With today’s rapidly changing environment of exponentially increasing knowledge and constantly development of new technologies, it is critical that the educational system keep up with the newest and most recent material when teaching tomorrow’s generation engineers. It is important that students in higher education gain the necessary knowledge and develop skills which can be directly or indirectly ...
Utnytting av energi i vannforsyning for oppvarming av større bygg
(Master thesis; Mastergradsoppgave, 2017-06-08)
Det anbefales et varmepumpeanlegg med tre sammenkoblete varmepumper som benytter kommunes backup drikkevannsforsyning som varmekilde. Anlegget kan levere 262 kW varmeeffekt til Salangen bo- og eldresenter og Vasshaug barnehage. Økonomisk vurdering viser at prosjektet har en positiv nåverdi på 3,8 mil. kroner og 2,9 år inntjeningstid.
Quaternion guidance and control of quadrotor
(Peer reviewed; Conference object; Chapter, 2017-07-27)
This paper addresses the problem of trajectory tracking for underactuated quadrotors. A quaternion based guidance law is proposed which feeds into an attitude control system based on a PD+ control law. The desired attitude from the guidance law is defined such that the attitude control system tries to align the position error along the axis of the translational actuator. Simulation results are ...
Fejér and Hermite-Hadamard Type Inequalities for N-Quasiconvex Functions
(Journal article; Peer reviewed, 2017-12-28)
Some new extensions and re finements of Hermite – Hadamard and Fejer type inequalities for functions which are N -quasiconvex are derived and discussed.
Periodic homogenization of nonlocal operators with a convolution-type kernel
(Journal article; Peer reviewed, 2017)
The paper deals with a homogenization problem for a nonlocal linear operator with a kernel of convolution type in a medium with a periodic structure. We consider the natural diﬀusive scaling of this operator and study the limit behavior of the rescaled operators as the scaling parameter tends to 0. More precisely we show that in the topology of resolvent convergence the family of rescaled operators ...