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norskFakultet for ingeniørvitenskap og teknologi: Nye registreringer
Viser treff 161-180 av 1096
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Mechanical Properties of Some FDM 3D-printed Infill Structures
(Master thesis; Mastergradsoppgave, 2024-05-15)Master thesis documents tensile test of fused deposit modeling 3D-printed parts. Infill configurations that’s investigated is line- and grid-pattern with 100% infill density for line pattern. Grid pattern have been printed with 20% and 40% infill density. To predict mechanical properties of 3D-printed parts with line pattern, classical laminate theory is chosen as mathematical model. Performing ... -
Fine-tuning Large Language Models on historical causes of death data
(Master thesis; Mastergradsoppgave, 2024-05-15)This thesis assesses the impact of fine-tuning and rag on llms in accurately assigning icd-10 codes to historical causes of death. Using funeral records from Trondheim, Norway (1830-1920), we fine-tuned Llama 3 and Mistral on 2000 records. Twelve experiments were conducted on 2000 additional records to evaluate the accuracy of each knowledge-injection technique, as well as a combination of the ... -
Machine Learning in Predictive Quality Management
(Master thesis; Mastergradsoppgave, 2024-05-15)This thesis investigates how machine learning techniques has greater advantages over traditional Statistical Process Control (SPC) methods and Anomaly Detection (AD) in monitoring and controlling process parameters so that the process remains stable and in control to meet required quality satisfactions. The broader term of Predictive Quality Management introduces an important subject of predictive ... -
Realisere ombruk av byggematerialer
(Master thesis; Mastergradsoppgave, 2024-05-14)Som fersk prosjektleder hos entreprenør, ble det feilbestilt åtte innerdører som hadde for lavt lydreduksjonstall i forhold til kravet. Dørene hadde spesiell størrelse og farge, tilpasset prosjekt, og ingen ville ha dem gratis. De ble kastet på søpla og generte nærmere ett tonn avfall. Slike feilbestillinger representerer en stor del av avfallet fra norske byggeplasser. Verdens samlede forbruk ... -
Adaptable and interactive 3D modelling using genetic algorithms
(Master thesis; Mastergradsoppgave, 2024-05-14)This thesis discusses the process of designing, implementing and testing a creative AI system that generates 3D models for the purpose of video game development. The system utilizes a combination of an interactive genetic algorithm and a distance weighted K-nearest neighbour regressor. Regression is employed as a learning mechanism to enable the system to rate designs based on the overall user ... -
Study of 3D printed polymer structures and geometries The impact of raster angle configurations on mechanical properties
(Master thesis; Mastergradsoppgave, 2023-05-22)3D-printing of polymers come in a large variety of methods and materials, each configuration with its own strengths and weaknesses. To compute and estimate mechanical properties of 3D-printed parts, good knowledge to the geometry of the internal structures is important to obtain. This will vary between different printers and slicers. As 3D-printed parts are anisotropic, it is often challenging to ... -
Shell based finite element modeling of Herøysund Bridge
(Master thesis; Mastergradsoppgave, 2023-05-15)This master's thesis thoroughly examines the application of the Finite Element Method (FEM) to the numerical modal analysis of the Herøysund Bridge, focusing on the theoretical backdrop, construction process, FEM techniques, and Eurocode recommendations for concrete structures. This study aims to demonstrate the utility of FEM in bridge analysis by utilizing ANSYS 2023 R1 to conduct a full numerical ... -
Robotic Arm for a Drone
(Master thesis; Mastergradsoppgave, 2023-05-14)Thanks to technical improvements, drones may now perform more than simply visual inspections of structures and buildings. An Unmanned Aerial Vehicle (UAV) drone can be equipped with a robotic arm or an attachment with sensors to check and test the structures and buildings. Designing a robotic arm with a modular end-effector that can be attached to a drone was the focus of this master's thesis research. ... -
Sammenligning av energipotensialet i slam fra ulike slamkilder
(Master thesis; Mastergradsoppgave, 2024-05-21)Slam er restproduktet ved rensing av avløpsvann og i produksjon av oppdretts- og settefisk, og lar seg fjerne fra vannet gjennom sedimentering, flotasjon og/eller filtrering. I kraft av sitt rike innhold av organisk materiale og næringsstoffer, er slam samtidig en verdifull ressurs. Avhengig av dets råstoffsammensetning, kan slammet blant annet benyttes i produksjon av biogass, og følgelig inngå som ... -
Shewanella baltica in a Microbial Fuel Cell for Sensing of Biological Oxygen Demand (BOD) of Wastewater
(Journal article; Tidsskriftartikkel; Peer reviewed, 2024-04-15)Geobacter and Shewanella are the most characterized electroactive bacteria genera. Unlike genus Geobacter that is strictly anaerobic, Shewanella can grow under both oxic and anoxic environments and is capable of metabolizing a wider substrate range. In the present study, the use of strain Shewanella baltica 20 in MFC-based biosensor for BOD monitoring is reported. The S. baltica strain 20 was isolated ... -
Intelligent decision modeling for optimizing railway cold chain service networks under uncertainty
(Journal article; Tidsskriftartikkel; Peer reviewed, 2024-06-27)Railway cold chain service network design (RCC-SND) aims to optimize the utilization of stations and lines as well as train allocations in a manner that minimizes costs while satisfying the service requirements of shippers. Furthermore, the uncertainties associated with freight demand, transportation costs, quality loss, station handling capacity, and arc capacity make the RCC-SND a complex ... -
Evaluering av optimal erstatning av naturlig tilslag med resirkulert betongtilslag for å oppnå tilstrekkelig bestandighet
(Master thesis; Mastergradsoppgave, 2021-06-22)Bygg- og anleggsindustrien er en stor bidragsyter til global oppvarming grunnet produksjon av bygningsmateriale, transport samt bygnings- og rivningsaktivitet. Materialets kretsløp og sirkulær økonomi kan drastisk redusere forurensning og etterspørselen av naturlige ressurser. Bruk av resirkulert tilslag (RCA) er en av mulighetene til hvordan en kan redusere forbruket av naturlige ressurser for ... -
Revisiting the development trajectory of parallel machine scheduling
(Journal article; Tidsskriftartikkel; Peer reviewed, 2024-05-23)The research on the Parallel Machine Scheduling Problem (PMSP) has undergone significant development. The most recent comprehensive review of published studies dates back to early 2001. This article presents an algorithmic review of PMSPs, using Main Path Analysis (MPA) to identify seminal knowledge diffusion and development trajectories. This research also sheds light on the less tangible aspects ... -
Sea Spray Icing Prediction: Integrating Experiments, Machine Learning, and Computational Fluid Dynamics
(Doctoral thesis; Doktorgradsavhandling, 2024-05-27)<p>Ice accretion is challenging for maritime and offshore operations in the Polar regions. Activities related to tourism, oil and gas exploration, fishing, and offshore wind energy are increasing in the arctic. Ice accretion on vessels and offshore structures pose a threat to structural integrity, vessel stability, and personnel safety in outdoor working environments. Freezing sea spray is the largest ... -
Evaluering av optimal erstatning av naturlig tilslag med resirkulert betongtilslag for å oppnå tilstrekkelig bestandighet
(Master thesis; Mastergradsoppgave, 2021-05-20)Bygg- og anleggsindustrien er en stor bidragsyter til global oppvarming grunnet produksjon av bygningsmateriale, transport samt bygnings- og rivningsaktivitet. Materialets kretsløp og sirkulær økonomi kan drastisk redusere forurensning og etterspørselen av naturlige ressurser. Bruk av resirkulert tilslag (RCA) er en av mulighetene til hvordan en kan redusere forbruket av naturlige ressurser for ... -
Besparelse med bruk av SD-anlegg
(Master thesis; Mastergradsoppgave, 2021-05-14)Denne oppgaven er en studie av hvordan SD-anlegg kan gi besparelser i både eksisterende og nye bygg. Rapporten ser på besparelser i form av energi og andre potensielle besparelser, som hvor mye tid et SD-anlegg frigir i løpet av en arbeidsdag og organisering av ferieavvikling. Innledningsvis er det gjort en gjennomgang av teori som er relevant for oppgaven, med fokus på SD-anleggets hierarki, ... -
DC-DC Converter For Fuel Cell (Control Strategy, Voltage Curve, Optimization, Converter Type). Current-fed Full-bridge Isolated DC-DC Converter With An Active Clamp Circuit For Fuel Cell Application
(Master thesis; Mastergradsoppgave, 2022-05-15)This thesis investigates one of the most favorable converters for integrating fuel cells into a DC microgrid. A current-fed full-bridge isolated DC-DC converter has advantages such as high voltage conversion ratio, low switches’ losses, and low input current ripple which make it one of the best choices for Fuel cells (FC). This converter transfer power to the load through the leakage inductance which ... -
Technology transfer framework review for easy Cobot adoption by SMEs
(Master thesis; Mastergradsoppgave, 2023-05-15)Collaborative industrial Robots (Cobots) were introduced as an advancement to traditional industrial Robots. Some advantages that were incorporated in Cobots included the ease of human interaction, safer working conditions and considerable smaller sizes. However, most Small & Medium Enterprises (SMEs) in Norway are not convinced of the merits of adopting these Cobots into their operations. This ... -
Uncertain Remanufacturing Reverse Logistics Network Design in Industry 5.0: Opportunities and Challenges of Digitalization
(Journal article; Tidsskriftartikkel; Peer reviewed, 2024-05-10)Remanufacturing, a crucial step of reverse logistics, focuses on restoring or enhancing the functionality of waste products. The challenge in planning an effective remanufacturing reverse logistics system lies in the uncertainties from various sources. In addition, the evolving industrial landscape in Industry 5.0 necessitates adaptability to technological advancements. This paper proposes an ...
