Now showing items 21-40 of 403

    • Some inequalities related to strong convergence of Riesz logarithmic means 

      Lukkassen, Dag; Persson, Lars Erik; Tephnadze, George; Tutberidze, Giorgi (Journal article; Tidsskriftartikkel; Peer reviewed, 2020-03-23)
      In this paper we derive a new strong convergence theorem of Riesz logarithmic means of the one-dimensional Vilenkin–Fourier (Walsh–Fourier) series. The corresponding inequality is pointed out and it is also proved that the inequality is in a sense sharp, at least for the case with Walsh–Fourier series.
    • Some new Fourier inequalities for unbounded orthogonal systems in Lorentz-Zygmund spaces 

      Akishev, Gabdolla; Lukkassen, Dag; Persson, Lars Erik (Journal article; Tidsskriftartikkel; Peer reviewed, 2020-03-20)
      In this paper we prove some essential complements of the paper (J. Inequal. Appl. 2019:171, 2019) on the same theme. We prove some new Fourier inequalities in the case of the Lorentz–Zygmund function spaces L q,r (logL ) α Lq,r(log⁡L)α involved and in the case with an unbounded orthonormal system. More exactly, in this paper we prove and discuss some new Fourier inequalities of this type for ...
    • A New Look at the Single Ladder Problem (SLP) via Integer Parametric Solutions to the Corresponding Quartic Equation 

      Høibakk, Ralph; Lukkassen, Dag; Meidell, Annette; Persson, Lars Erik (Journal article; Tidsskriftartikkel; Peer reviewed, 2020-02-18)
      The aim is to put new light on the single ladder problem (SLP). Some new methods for finding complete integer solutions to the corresponding quartic equation z 4 −2L z 3 +( L 2 − a 2 − b 2 ) z 2 +2L a 2 z− L 2 a 2 =0 z4−2Lz3+(L2−a2−b2)z2+2La2z−L2a2=0 are developed. For the case L≥ L min L≥Lmin , these methods imply a complete parametric representation for integer ...
    • Dihedral Group D4 - A New Feature Extraction Algorithm 

      Sharma, Puneet (Journal article; Tidsskriftartikkel; Peer reviewed, 2020-04-04)
      In this paper, we propose a new feature descriptor for images that is based on the dihedral group D<sub>4</sub> , the symmetry group of the square. The group action of the D<sub>4</sub> elements on a square image region is used to create a vector space that forms the basis for the feature vector. For the evaluation, we employed the Error-Correcting Output Coding (ECOC) algorithm and tested our model ...
    • Onshore and Offshore Coordination of Logistics Services at Seaports 

      Adu-Gyamfi Appiah, Bright (Master thesis; Mastergradsoppgave, 2019-06-28)
      As global trade increases, sizes of vessels and cargo throughputs have also experienced a sudden rise thereby putting excess pressure on ship berths and ports. This is shifting most ports to much smarter technological solutions with the aim of optimizing operations, increasing efficiency and reducing logistics cost without the need for huge infrastructural and equipment investments. Developing the ...
    • Total Productive Maintenance in an Industry 4.0 Framework 

      Noureddine, Rami (Master thesis; Mastergradsoppgave, 2019-06-28)
      Maintenance is a key operation function that is required to improve business performance by avoiding equipment breakdown. In 1971, Total Productive Maintenance (TPM), a lean manufacturing approach, has been developed and widely used as a maintenance strategy to gain a competitive advantage in industry. However, with the advent of new technology and the internet of things, manufacturing process are ...
    • New Practical Exercise in Lean Six Sigma for Masters Students in UiT – The Arctic University of Norway 

      Maharjan, Sujan (Master thesis; Mastergradsoppgave, 2019-06-28)
      Lean Six Sigma has proven to be a valuable tool for improving flow and quality in any business activities. It is being implemented by almost all business forms globally. It is now an important curriculum for engineering and management students. UiT- The Arctic University of Norway, Narvik is one of the fine institutions which provide training course on Lean Six Sigma for Master’s students studying ...
    • Production and Logistics Systems Improvements - Biim Ultrasound AS 

      Tofah, Dzifa Korbla Wisdom (Master thesis; Mastergradsoppgave, 2019-06-28)
      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 ...
    • Digital twin simulation with Visual Components 

      Arnarson, Halldor (Master thesis; Mastergradsoppgave, 2019-06-28)
      A digital twin is a new and emerging tool of the fourth industrial revolution. It is an extensive part of connecting the manufacturing equipment together to develop a smart factory. Investigation of simulating manufacturing system to bind the digital world with the physical, allows for analysis of data and monitoring of systems to head off problems before they even occur, preventing downtime, develop ...
    • Thin Wall Structure by Welding 

      Arumairasa, Hans Ivar (Master thesis; Mastergradsoppgave, 2019-06-28)
      Manufacturing of thin wall structure by wire arc additive manufacturing (WAAM) is on the main application of additive manufacturing. 3D-printing technology has significant advantages over traditional milling and machining techniques or welded analogs. Thin wall structure constitutes an essential and growing proportion of engineering construction, within common areas as in structural aerospace and ...
    • Optimized cardiac simulation as a tool to understand patient specific mechanical function 

      Odeigah, Oscar Ofordile (Master thesis; Mastergradsoppgave, 2019-06-28)
      The muscular tissue of the heart is able to contract in the absence of external load. This behaviour is stimulated by a spontaneous electrical depolarization of cardiac cells in the sinoatrial node, which spreads electrical activation through the whole heart, that triggers the synchronized mechanical contraction of the heart muscle. This phenomenon, referred to as active contraction is commonly ...
    • Wind turbine and ice breaking 

      Nilsen, Peter Tor Furseth (Master thesis; Mastergradsoppgave, 2019-06-28)
      The arctic climate imposes the challenge of ice accretion on the blades of the wind turbine created by the atmospheric ice. Over time, the ice build-up causes ice shedding which can do structural damage to the wind turbine. The process involving ice breaking and shedding is not well understood. This document explains the mechanical properties of ice such as density, coefficient of thermal expansion, ...
    • Elevator model. Design of an elevator model for teaching in the field of automation 

      Nijdam, Eeke Maria (Master thesis; Mastergradsoppgave, 2019-06-28)
      For the master of Engineering Design at UiT, the arctic university of Norway, campus Narvik, a master assignment is being executed as a conclusion to the study. In this case the department of industrial automation education had an elevator model design assignment that could be done by an Engineering Design student. This report describes a summary of the design process that has been executed and the ...
    • Working Chair for Physically Disabled Children 

      Larsson, Ludvig (Master thesis; Mastergradsoppgave, 2019-06-28)
      A product development process was initiated with the purpose of designing a saddle seat working chair for physically disabled children on behalf of Fysionord AB. An objectives tree diagram was made using Mindomo.com. Sub-functions in existing solutions were listed, leading to the discovery of four modules, constituting the working chair: footrest, seat, backrest and undercarriage with wheels. The ...
    • Building a Low-Cost Ground Station for Weather Satellite Image Reception 

      Zahid, Ezzatullah (Master thesis; Mastergradsoppgave, 2019-06-27)
      In this Thesis, a small, low-cost, portable and easily deployable ground station was built, to track and receive signals from National Oceanic and Atmospheric Administration (NOAA) weather satellites (series 15, 18 and 19) in VHF and UHF bands, process and convert these to images are presented. A ground station, capable of receiving reasonably good quality images from NOAA weather satellites was ...
    • Arctic Agriculture by Using Fish Farming Waste in Northern Norway 

      Sæterbø, Mathias (Master thesis; Mastergradsoppgave, 2019-06-28)
      With the growing aquaculture, improved management of the environmental, logistic-managerial, social, and economic aspect are vital to preserving sustainability in the industry. The dissertation addresses the potential processing of the fish waste in aquaponics (a combination of two highly effective production technologies: hydroponics and recirculating aquaculture). Involving a suggestion for ...
    • Design and construction of a flexible manufacturing system test bench 

      Andresen, Martin Røysland (Master thesis; Mastergradsoppgave, 2019-06-28)
      This thesis explores the history, concept and criteria of flexible manufacturing systems. A small-scale test bench is designed and constructed for educational and demonstrational pur- poses. The test bench in comprised of an industrial robot, a CNC machine, and a conveyor. These are all controlled and automated from a PLC with a connected touch panel for human machine interface. It describes in ...
    • Product Quality Assurance using Engineering Strategies for an SME with an ATO Manufacturing System Located in the Arctic Region depending on a Global Supply Chain 

      Steinhauer, Peer Salvator (Master thesis; Mastergradsoppgave, 2019-06-28)
      A small and medium sized enterprise (SME) with an assembly to order manufacturing system (ATO-MS) depending on a global supply chain has especially challenges when it comes to secure the quality. The parts procured from a global supply chain represent a big amount of value invested in to the short line of the MS. Depending on the definition of quality from the suppliers, how can the company react ...
    • Application of electric vehicle charging solutions on small maritime vessels 

      Mandasari, Maya (Master thesis; Mastergradsoppgave, 2019-06-28)
      This thesis explores various charging standards for electric vehicles with the goal to find a standard that can be implemented in an electric maritime vessel (EMV). Combined charging system 2.0 (CCS2) is selected and the standard is explained in detail along with the necessary power electronics. Several Matlab and dSPACE simulations is made to test the charging and communication. A laboratory ...
    • Wireless Charging for Small Electric Vessels 

      Omosanya, Hafeez Abolade (Master thesis; Mastergradsoppgave, 2019-06-28)
      With the presence of traditional thick and heavy cables for charging, the risk of humans exposed to high-voltage, and due to mechanical wear and tear in conductive materials, inductive wireless charging was introduced which is the future of charging technology. This project has focused on magnetic-coupled wireless transfer with some key components involved such as a DC voltage source, a full-bridge ...