Now showing items 201-220 of 926

    • Transportsystemer, Vann og avløps -teknikk 

      Starbo, Jostein (Master thesis; Mastergradsoppgave, 2023-01-17)
      Faget «Transportsystemer for Vann og avløpsteknikk» ved Institutt for Bygg, Energi og Material teknologi skal foreleses for første gang ved UiT Norges Arktiske Universitet våren 2023. For å utforme pensum i emnet vil denne oppgaven samle, analysere og søke å forbedre modeller fra følgende kilder og metoder: • Data fra utgitte lærebøker, rapporter eller tilgjengelig materiale. • Data fra aktuelle ...
    • Assessment considerations during lockdown in Norway: An exploratory case study with focus on misconducts in university mathematics 

      Rensaa, Ragnhild Johanne (Journal article; Tidsskriftartikkel; Peer reviewed, 2023-05-11)
      The present paper raises a discussion about assessment formats in mathematics courses at Norwegian universities during the Covid lockdown. This proved to be challenging since the European GDPR regulations are strictly interpreted in Norway, making proctoring at home difficult. Based on analyses of nine university teachers’ feedback on how exams were carried out at their university during lockdown, ...
    • Statistical prediction and sensitivity analysis of kinetic rate constants for efficient thermal valorization of plastic waste into combustible oil and gases 

      Irfan, Muhammad; Un Nabi, Rao Adeel; Hussain, Hammad; Naz, Yasin; Shukrullah, Shazia; Khawaja, Hassan; Rahman, Saifur; Farid, Usman (Journal article; Tidsskriftartikkel; Peer reviewed, 2023-05-06)
      Sensitivity analyses of rate constants for chemical kinetics of the pyrolysis reaction are essential for the efficient valorization of plastic waste into combustible liquids and gases. Finding the role of individual rate constants can provide important information on the process conditions, quality, and quantity of the pyrolysis products. The reaction temperature and time can also be reduced through ...
    • Real-Time Price-Based Optimal Energy Mix in Smart Distribution Network 

      Wagle, Raju; Sharma, Pawan; Charu, Sharma; Amin, Mohammad (Chapter; Bokkapittel, 2023-04-29)
      With the increasing penetration of Distributed Energy Resources (DERs) in Smart Distribution Networks (SDNs), balancing energy mix is a crucial task for distribution system operators. The aggregate consumption, generation, and power exchanged from the upstream network are essential for the energy management system. Appropriate allocation and scheduling of DERs and Energy Storage can minimize the ...
    • Production Management and Supply Chain Integration 

      Pourhejazy, Pourya (Chapter; Bokkapittel, 2022-10-26)
      Digitalization not only improves individual performance but also helps orchestrate supply chain partners to serve a bigger goal. To fully benefit from supply chain digitalization, a high level of integration across supply chain activities is required. This chapter introduces major interactions between production management decisions and the supply chain strategy, structure, and performance to explore ...
    • Interactive teaching in an international preparatory language program; promoting some of the 21st century skills 

      Takamine, Kaori; Eilertsen, Randi; Holbø, Marianne; Dybdahl, Tone Harr (Conference object; Konferansebidrag, 2022-10)
      As the globalization has intensified, the future of engineering education may require its students to enhance the 21st century skills such as critical thinking, collaboration and communication skills (Riemer 2007, Gradin and Hirleman, 2009). In harmony with this, preparatory language programs for engineering studies must adopt educational methods that help students to cultivate such key skills. ...
    • Supporting students to prepare for higher education studies: Enhancing English writing skills with formative peer assessment 

      Takamine, Kaori (Conference object; Konferansebidrag, 2022-10)
      Studies report that writing skills of many beginner students in Norwegian higher education institutions are not adequately developed, showing a lack of critical thinking and referencing technique and a poor requisite language ability (Lødding and Aamodt 2015, Wollcheid et al. 2020). Literature also shows that a traditional lecture setting does not help students to enhance their learning autonomy ...
    • Hvordan vi motiverer våre internasjonale ingeniørstudenter 

      Takamine, Kaori; Eilertsen, Randi; Dybdahl, Tone Harr; Holbø, Marianne (Conference object; Konferansebidrag, 2023)
    • Integrating sustainability into production scheduling in hybrid flow-shop environments 

      Mokhtari-Moghadam, Ali; Pourhejazy, Pourya; Gupta, Deepak (Journal article; Tidsskriftartikkel; Peer reviewed, 2023-04-24)
      Global energy consumption is projected to grow by nearly 50% as of 2018, reaching a peak of 910.7 quadrillion BTU in 2050. The industrial sector accounts for the largest share of the energy consumed, making energy awareness on the shop foors imperative for promoting industrial sustainable development. Considering a growing awareness of the importance of sustainability, production planning and ...
    • Throughput Optimization for NOMA Energy Harvesting Cognitive Radio with Multi-UAV-Assisted Relaying under Security Constraints 

      Dang, Viet-Hung; Nguyen, Le-Mai-Duyen; Vo, Van Nhan; Tran, Hung; Ho, Tu Dac; Chakchai, So-In; Surasak, Sanguanpong (Journal article; Tidsskriftartikkel; Peer reviewed, 2022-11-28)
      This paper investigates the throughput of a non-orthogonal multiple access (NOMA)-based cognitive radio (CR) system with multiple unmanned aerial vehicle (UAV)-assisted relays under system performance and security constraints. We propose a communication protocol that includes an energy harvesting (EH) phase and multiple communication phases. In the EH phase, the multiple UAV relays (URs) harvest ...
    • Developing formative peer assessment in writing classes: focus on students’ perceptions 

      Takamine, Kaori (Conference object; Konferansebidrag, 2023-03)
      The literature of higher education has shown that formative peer assessment (FPA) promotes students’ learning across disciplines (Topping, 1998, Lynch et al. 2012, Li et al. 2019, among others). Despite the solid reported benefits, studies on an effective implementation of FPA are still limited in the literature (Nicol, Thomson, and Breslin 2014, Wanner and Palmer, 2018). A debilitating factor ...
    • Havforskningsinstituttets rådgivning for menneskeskapt støy i havet - Kunnskapsgrunnlag, vurderinger og råd for 2023 

      Sivle, Lise Doksæter; Forland, Tonje Nesse; de Jong, Karen; Zhang, Guosong; Kutti, Tina; Durif, Caroline; Wehde, Henning; Grimsbø, Endre (Research report; Forskningsrapport, 2023)
      Havforskningsinstituttet gir råd for alle operasjoner til havs som involverer bruk av lydkilder, samt elektromagnetiske kilder 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 ...
    • On operator estimates in homogenization of nonlocal operators of convolution type 

      Piatnitski, Andrei; Sloushch, Vladimir; Suslina, Tatiana; Zhizhina, Elena (Journal article; Tidsskriftartikkel; Peer reviewed, 2023-01-11)
    • Understanding Physical Properties of Fresh Water and Marine Ice using Multiphysics Modelling and Infrared Thermography 

      Khawaja, Hassan (Conference object; Konferansebidrag, 2023)
      Ice has unique physical properties, which tend to vary depending on how, where, and when it forms. In the presented work, we looked deeper into various physical properties of ice. In one of the studies, we focused on studying the ice adhesion on two types of polymers; polyurethane (PU) and polyvinyl-chloride (PVC). It revealed interesting behaviors with a viable potential for roads/highways coated ...
    • Optimal power flow based coordinated reactive and active power control to mitigate voltage violations in smart inverter enriched distribution network 

      Wagle, Raju; Sharma, Pawan; Charu, Sharma; Amin, Mohammad (Journal article; Tidsskriftartikkel; Peer reviewed, 2023-03-30)
      Voltage violations are the main problem faced in distribution networks (DN) with a higher penetration of inverter-based generations (IBG). Active and reactive power control from smart inverters (SI) can mitigate such violations. Optimal power flow (OPF)-based control provides more accurate operating set points for the coordinated operation of SIs. Therefore, this paper presents a three-phase OPF-based ...
    • Secondary Network Throughput Optimization of NOMA Cognitive Radio Networks Under Power and Secure Constraints 

      Vo, Van Nhan; Viet Hung, Dang; Tran, Hung; Ha, Dac-Binh; Le, Cong; Ho, Tu Dac; Chakchai, So-In (Journal article; Tidsskriftartikkel; Peer reviewed, 2023-03-31)
      Recently, the combination of cognitive radio networks with the nonorthogonal multiple access (NOMA) approach has emerged as a viable option for not only improving spectrum usage but also supporting large numbers of wireless communication connections. However, cognitive NOMA networks are unstable and vulnerable because multiple devices operate on the same frequency band. To overcome this drawback, ...
    • A Modified Version of the IEEE 39-bus Test System for the Day-Ahead Market 

      Tricarico, Gioacchino; Wagle, Raju; Dicorato, Maria; Forte, Giuseppe; Gonzalez-Longatt, Francisco; Rueda, Jose Luis (Chapter; Bokkapittel, 2023-03-28)
      Reaching net-zero emissions within the proposed time requires an enormous effort from the energy sector, and it is even more challenging for the electricity infrastructure. This article offers a modified version of the IEEE 39-bus system specifically created to allow zonal day-ahead market (ZDAM) simulations. The system representation is based on the original version of the IEEE 39-bus system but ...
    • Experiences in a Cyber-Physical Co-Simulation Testbed Development for a Smart-er Distribution Network 

      Wagle, Raju; Pham, Le Nam Hai; Tricarico, Gioacchino; Sharma, Pawan; Rueda, Jose Luis; Gonzalez-Longatt, Francisco (Chapter; Bokkapittel, 2023-03-28)
      With the rise of the integration of renewable energy sources, the operating characteristics of existing electric power distribution systems are evolving and changing. As a result, the digitalisation of the distribution network is gaining attention for effective real-time monitoring and control. Cyber-Physical cosimulation is one of the options for implementing and testing novel concepts and ideas ...
    • Sensitivity Analysis of Thermal Degradation of Plastic Waste Using Statistically Assumed Exponential Factors and Activation Energies 

      Un Nabi, Rao Adeel; Hussain, Hammad; Naz, Yasin; Shukrullah, Shazia; Khawaja, Hassan; Irfan, Muhammad; Rahman, Saifur; Jazem Ghanim, Abdulnour Ali (Journal article; Tidsskriftartikkel; Peer reviewed, 2023-04-04)
      The rise in the production of plastic waste has prompted the exploration of various recovery options instead of landfilling, burning, and other unethical ways of decomposing. The experimentally generated rate constants for the thermal processing of plastic waste do not yield enough liquid fuels and gases for commercial-scale usage. It is imperative to predict kinetic rate constants statistically ...
    • Concise Definition of the Overcurrent Protection System for CIGRE European Medium Voltage Benchmark Network 

      Pham, Le Nam Hai; Wagle, Raju; Gonzalez-Longatt, Francisco (Chapter; Bokkapittel, 2023-03-28)
      In the significant widespread transition towards clean energies, there has been an unstoppable trend in integrating renewable energy sources (RSs) in distribution networks. However, the massive penetration of integrated multisources into conventional distribution systems may create several operational problems, such as malfunctioning protection systems. This paper concisely defines the setting for ...