Sökning: "Vessel Use"

Visar resultat 11 - 15 av 123 uppsatser innehållade orden Vessel Use.

1. 11. Data-Driven Adaptive Control of Unmanned Surface Vehicles Using Learning-Based Model Predictive Control

   Uppsats för yrkesexamina på avancerad nivå, Lunds universitet/Institutionen för reglerteknik

   Författare :Markus Svedberg; [2023]
   Nyckelord :Technology and Engineering;

   Sammanfattning : In this thesis, the subject of data-driven control of Unmanned Surface Vehicles (USVs) is explored. The control task is formulated through Nonlinear Model Predictive Path Following Control (NMPFC). System identification (SYSID) and Reinforcement Learning (RL) are employed to improve performance in a data-driven manner. LÄS MER

3. 12. Multi-Scale Topology Optimization of Lattice Structures Using Machine Learning

   Uppsats för yrkesexamina på avancerad nivå, Uppsala universitet/Tillämpad mekanik

   Författare :Julia Ibstedt; [2023]
   Nyckelord :Topology optimization; Multi-scale topology optimization; Machine learning; Gaussian process; Homogenization; Inverse homogenization; Anisotropic materials; Symmetry groups; Material property space; Topologioptimering; Flerskalig topologioptimering; Maskininlärning; Gaussian process; Homogenisering; Anisotropa material; Symmetrigrupper; Materialegenskapsrymd;

   Sammanfattning : This thesis explores using multi-scale topology optimization (TO) by utilizing inverse homogenization to automate the adjustment of each unit-cell's geometry and placement in a lattice structure within a pressure vessel (the design domain) to achieve desired structural properties. The aim is to find the optimal material distribution within the design domain as well as desired material properties at each discretized element and use machine learning (ML) to map microstructures with corresponding prescribed effective properties. LÄS MER

4. 13. Pressfrihetens frihet – i en värld av hat och hot : En kvalitativ intervjustudie om hur hat, hot och trakasserier påverkar journalistikens roll i ett demokratiskt samhälle

   Kandidat-uppsats, Umeå universitet/Institutionen för kultur- och medievetenskaper

   Författare :Johanna Nilsson; Emily Hellichius Georgsson; [2023]
   Nyckelord :Journalism; Threat; Hatred; Harassment; Sweden; Discourse theory; Interview;

   Sammanfattning : This study examines how local journalists in Sweden view, understand and manage threats, hatred and harassment in their professional role. The study is based on qualitative interviews with eight journalists, four men and four women, from different local newspapers in Sweden. LÄS MER

5. 14. Study of stability improvement measures meeting the effects of new use of a secondhand cement carrier vessel

   Master-uppsats, KTH/Lättkonstruktioner, marina system, flyg- och rymdteknik, rörelsemekanik

   Författare :Jansen Novri; [2022]
   Nyckelord :ship modification; cargo type; stability code; center of gravity; center of buoyancy; fartygsmodifiering; lasttyp; stabilitetskod; tyngdpunkt; flytkraftscentrum;

   Sammanfattning : Secondhand ship is an option to improve marine business competitiveness. It provides a way for ship owners to integrate customer market rapidly without spending many resources on producing new ships. However, secondhand ships that perfectly suit owner's requirements becomes unavoidable challenge. LÄS MER

7. 15. Does resting vasomotor tone impact +Gz tolerance?

   Master-uppsats, KTH/Skolan för kemi, bioteknologi och hälsa (CBH)

   Författare :Samuel Courboin; [2022]
   Nyckelord :Gravitoinertial tolerance; Gravitoinertial force; Resting vasomotor tone; Mean arterial pressure; Postexercise hypotension;

   Sammanfattning : The ability of an individual to withstand elevated head-to-toe gravitoinertial (+Gz) forces is determined by the capacity of their body to maintain sufficient head-level arterial pressure. Recent studies have shown a relationship between resting blood-vessel stiffness and an individual’s +Gz-tolerance, although the mechanisms behind this relationship are unclear. LÄS MER