Fakultet for ingeniørvitenskap og teknologi: Recent submissions

Now showing items 301-320 of 926

    • A Two-Stage Decision-Support Approach for Improving Sustainable Last-Mile Cold Chain Logistics Operations of COVID-19 Vaccines 

      Andol, Eugenia Ama; Yu, Hao (Journal article; Tidsskriftartikkel; Peer reviewed, 2022-08-21)
      The COVID-19 pandemic has become a global health and humanitarian crisis that catastrophically affects many industries. To control the disease spread and restore normal lives, mass vaccination is considered the most effective way. However, the sustainable last-mile cold chain logistics operations of COVID-19 vaccines is a complex short-term planning problem that faces many practical challenges, ...

    • Computationally efficient approximate dynamic programming for multi-site production capacity planning with uncertain demands 

      Chen-Yang, Cheng; Pourhejazy, Pourya; Tzu-li, Chen (Journal article; Tidsskriftartikkel; Peer reviewed, 2022-07-05)
      With globalization and rapid technological-economic development accelerating the market dynamics, consumers' demand is becoming more volatile and diverse. In this situation, capacity adjustment as an operational strategic decision plays a major role to ensure supply chain responsiveness while maintaining costs at a reasonable norm. This study contributes to the literature by developing computationally ...

    • Review on material and design of anode for microbial fuel cell 

      Banerjee, Aritro; Calay, Rajnish K; Mustafa, Mohamad (Journal article; Tidsskriftartikkel; Peer reviewed, 2022-03-21)
      Microbial Fuel Cell (MFC) is a bio-electrochemical system that generates electricity by anaerobic oxidation of substrates. An anode is the most critical component because the primary conversion of wastewater into electrons and protons takes place on the surface of the anode, where a biofilm is formed. This paper describes the essential properties of the anode and classifies its types according ...

    • Using Deep Learning to Predict the Amount of Chemicals Applied on the Wheel Track for Winter Road Maintenance 

      Hatamzad, Mahshid; Polanco Pinerez, Geanette Cleotilde; Casselgren, Johan (Journal article; Tidsskriftartikkel; Peer reviewed, 2022-03-30)
      The decade of big data has emerged in recent years, which has led to entering the era of intelligent transportation. One of the main challenges to deploying intelligent transportation is dealing with winter roads in cold climate countries. Different operations can be used to protect the road from ice and snow, such as spreading chemicals (here salt) on the road surface. Using salt for de-icing and ...

    • Variable Neighborhood-based Cuckoo Search for Production Routing with Time Window and Setup Times 

      Wu, Gen-Han; Cheng, Chen-Yang; Pourhejazy, Pourya; Fang, Bai-Lyn (Journal article; Tidsskriftartikkel; Peer reviewed, 2022-06-23)
      Major corporations compete over the strengths of their supply chains. Integrating production and distribution operations helps improve supply chain connectedness and responsiveness beyond the standalone optimization norms. This study proposes an original Mixed-Integer Linear Programming (MILP) formulation for the Production scheduling-based Routing Problem with Time Window and Setup Times (PRP-TWST). ...

    • Towards the smart and sustainable transformation of Reverse Logistics 4.0: a conceptualization and research agenda 

      Sun, Xu; Yu, Hao; Solvang, Wei Deng (Journal article; Tidsskriftartikkel; Peer reviewed, 2022-08-16)
      The recent advancement of digitalization and information and communication technology (ICT) has not only shifted the manufacturing paradigm towards the Fourth Industrial Revolution, namely Industry 4.0, but also provided opportunities for a smart logistics transformation. Despite studies have focused on improving the smartness, connectivity, and autonomy of isolated logistics operations with a primary ...

    • Analysis of local climate effects for Martineåsen development project in Larvik 

      Shunina, Maria (Master thesis; Mastergradsoppgave, 2017-08-15)
      The goal of this thesis is to perform analysis of local climate effects for Martineåsen development project in Larvik. The Norwegian regulatory acts place a strict requirements on outdoor areas comfort criteria and thus for the purpose of said development project, strict adherence to these acts is necessary. The outdoor comfort in cold climate is mostly governed by wind, and thus study of local ...

    • Statistical Optimization of Pyrolysis Process for Thermal Destruction of Plastic Waste Based on Temperature-Dependent Activation Energies and Pre-Exponential Factors 

      Alqarni, Ali; Un Nabi, Rao Adeel; Althobiani, Faisal; Naz, Yasin; Shukrullah, Shazia; Khawaja, Hassan; Bou-Rabee, Mohammed; Gommosani, Mohammad; Abdushkour, Hesham; Irfan, Muhammad; Mahnashi, Mater (Journal article; Tidsskriftartikkel; Peer reviewed, 2022-08-09)
      The massive increase in disposable plastic globally can be addressed through effective recovery methods, and one of these methods is pyrolysis. R software may be used to statistically model the composition and yield of pyrolysis products, such as oil, gas, and waxes to deduce an effective pyrolysis mechanism. To date, no research reports have been documented employing the Arrhenius equation in R ...

    • Experimental Study of Power Generation and COD Removal Efficiency by Air Cathode Microbial Fuel Cell Using Shewanella baltica 20 

      Das, Subhashis; Calay, Rajnish K (Journal article; Tidsskriftartikkel; Peer reviewed, 2022-06-05)
      Microbial fuel cells (MFCs) are a kind of bioreactor for generating electricity, facilitated by exoelectrogens while treating wastewater. The present article focuses on the performance of an air cathode plexiglass MFC in terms of chemical oxygen demand (COD) removal efficiency and power output by performing two sets of experiments. The proton exchange membrane and electrode materials were Nafion ...

    • HAVFORSKNINGSINSITUTTETS RÅDGIVNING FOR MENNESKESKAPT STØY I HAVET - Kunnskapsgrunnlag, vurderinger og råd for 2022 

      Sivle, Lise Doksæter; Forland, Tonje Nesse; de Jong, Karen; Pedersen, Geir; Zhang, Guosong; Kutti, Tina; McQueen, Kate; Wehde, Henning; Grimsbø, Endre (Research report; Forskningsrapport, 2022)
      Havforskningsinstituttet gir råd for alle operasjoner til havs som involverer bruk av lydkilder som kan påvirke marine økosystemer. Dette inkluderer vitenskapelige undersøkelser, utbygging og sprenging i sjø, seismiske og elektromagnetiske undersøkelser i forbindelse med petroleumsvirksomhet og utbygging og drift av vindkraftanlegg til havs. Denne rapporten er en sammenstilling av tilgjengelig ...

    • Why collaboration is necessary for research in academia? 

      Khawaja, Hassan (Conference object; Konferansebidrag, 2022-05-23)

    • Computational Fluid Dynamics - A Stepping-Stone of MULTIPHYSICS 

      Khawaja, Hassan (Conference object; Konferansebidrag, 2022-07-07)
      Fluids have been around us for as long as we know; they have enabled us to cross the oceans, ride the winds, shorten distances, and much more. Computational Fluid Dynamics (CFD) has extended our understanding of fluids. Even to this day, the analytical solution of fundamental equations of fluid mechanics remains a million-dollar award problem (Clay Mathematics Institute). As engineers, we’ll leave ...

    • Pre-Holocene volcanic ash in sediments near Jan Mayen 

      Gjerløw, Eirik; Haflidason, Haflidi; Höskuldsson, Ármann (Conference object; Konferansebidrag, 2022-05)

    • Weighted Boundedness of Certain Sublinear Operators in Generalized Morrey Spaces on Quasi-Metric Measure Spaces Under the Growth Condition 

      Samko, Natasha Gabatsuyevna (Journal article; Tidsskriftartikkel; Peer reviewed, 2022-03-17)
      We prove weighted boundedness of Calderón–Zygmund and maximal singular operators in generalized Morrey spaces on quasi-metric measure spaces, in general non-homogeneous, only under the growth condition on the measure, for a certain class of weights. Weights and characteristic of the spaces are independent of each other. Weighted boundedness of the maximal operator is also proved in the case when ...

    • Norwegian freshmen engineering students' self-efficacy, motivation, and view of mathematics in light of task performance 

      Rensaa, Ragnhild Johanne; Tossavainen, Timo (Journal article; Tidsskriftartikkel; Peer reviewed, 2022-02-15)
      We report on 71 Norwegian freshmen engineering students' self-efficacy and motivation in mathematics. Students' responses to five-point Likert scales were analysed across three groups corresponding to different performance levels on a set of mathematical tasks. The groups were investigated to trace differences in self-efficacy, motivation, and the epistemological beliefs about the nature of mathematics. ...

    • Teknisk analyse av et ny bygget sykehjem i 2021 etter passivhus standard. Dokumentasjon av funn etter stikkprøvekontroll av FDV 

      Xu, Xin (Master thesis; Mastergradsoppgave, 2022-05-24)
      SAMMENDRAG Da det skulle bygges nytt sykehjem på Åse i Andøy kommune ble det besluttet at det skulle bygges etter passivhus standarden som stiller strenge krav til utførelse og dokumentasjon. Hensikten med denne oppgaven er å gjennomføre en teknisk analyse bygget og innebærer å undersøke om bygget er oppført etter oppgitt kravspesifikasjon i anbudet og kontrollere FDV-dokumentasjon etter forskrifter ...

    • Three-phase separator simulator 

      Myrstad, Mats (Master thesis; Mastergradsoppgave, 2022-05-16)
      In this thesis, the goal is to compare the UIT model in the energy lab to the simulation program Aspen HYSYS. The model in the lab has consist of a three-phase separator tank with a weir, and two-component of water and cooking oil, It was made by two students at UIT in 2018. In this simulation, there will be three different variables to determine the accuracy of the simulation. The flow in and out, ...

    • Spatial Mapping Using HoloLens 2. A Proposal for Improvement and an Analysis of Inner Workings 

      Levoll-Steen, Casper André (Master thesis; Mastergradsoppgave, 2022-05-16)
      In this thesis we focus on improving the spatial mapping of Microsoft's augmented reality glasses HoloLens 2. Firstly, an in depth analysis of inner workings and limitations, based on public resources, is conducted. This is then followed by a series of experiments in a small and simple indoor environment, the experiments are designed to extract additional information about the mapping which could ...

    • Utnyttelse av digitale data i byggefasen for småhusentreprenører 

      Pedersen, Kristian; Lindberg, Emil (Master thesis; Mastergradsoppgave, 2022-05-14)
      Digital transformasjon i bygge-, anleggs- og eiendomsnæringen (BAE-næringen) sees på som en felles løsning for å motvirke produktivitetsnedgangen i bransjen. Utveksling av data mellom aktører, høy automatiseringsgrad og utnyttelse av data og trekkes frem som hovedpunkter i den digitale transformasjonen. Bygningsinformasjonsmodellering (BIM) har en sentral rolle i dette og beskrives som et nav i ...

    • Hill ascent confidence model and simulator for trailer trucks 

      Henriksen, Tanja Emilie (Master thesis; Mastergradsoppgave, 2022-05-13)
      This master thesis reports on the research of simulating hill ascensions on winter roads. By utilizing Python and Excel a simple prototype simulation was created. This simulation shows the velocity changes during the ascension, with different variables such as: initial velocity, gear, weight distribution, environment etc. The variables used are mostly based on real life measurements, with a ...