Sökning: "Small fields"

Visar resultat 1 - 5 av 438 uppsatser innehållade orden Small fields.

  1. 1. Measuring copper abundances in the Galactic Bulge

    Kandidat-uppsats, Lunds universitet/Astrofysik; Lunds universitet/Fysiska institutionen

    Författare :Nikolei Höglinger; [2024]
    Nyckelord :Copper; Galaxy: abundances; Galaxy: bulge; Chemical Evolution; Physics and Astronomy;

    Sammanfattning : Context: The chemical evolution of Cu in the Galactic bulge have been studied in a few studies using red giant branch stars, but the ages of individual red giant stars are difficult to determine. In addition, the bulge has been a challenging region of the Milky Way galaxy to obtain high-resolution spectra of stars, except when observing through certain few small fields into the bulge that are known to have low extinction. LÄS MER

  3. 2. Exploring the Depth-Performance Trade-Off : Applying Torch Pruning to YOLOv8 Models for Semantic Segmentation Tasks

    Master-uppsats, KTH/Skolan för elektroteknik och datavetenskap (EECS)

    Författare :Xinchen Wang; [2024]
    Nyckelord :Deep Learning; Semantic segmentation; Network optimization; Network pruning; Torch Pruning; YOLOv8; Network Depth; Djup lärning; Semantisk segmentering; Nätverksoptimering; Nätverksbeskärning; Fackelbeskärning; YOLOv8; Nätverksdjup;

    Sammanfattning : In order to comprehend the environments from different aspects, a large variety of computer vision methods are developed to detect objects, classify objects or even segment them semantically. Semantic segmentation is growing in significance due to its broad applications in fields such as robotics, environmental understanding for virtual or augmented reality, and autonomous driving. LÄS MER

  4. 3. Miljöpåverkan av hönsfoder ur ett livscykelperspektiv

    Kandidat-uppsats, Lunds universitet/Miljövetenskaplig utbildning; Lunds universitet/Centrum för miljö- och klimatvetenskap (CEC)

    Författare :Louise Engsmyre; [2023]
    Nyckelord :Höns; LCA; Livscykel; Miljöpåverkan; Earth and Environmental Sciences;

    Sammanfattning : The environmental impact of poultry mainly arises from their feed. Therefore, this study aimed to investigate the environmental impact of three Swedish poultry feeds and identify how their environmental performance could be improved. LÄS MER

  5. 4. Carbon Capture from Biomass Boiler Flue Gas Emissions using Microalgae : A Case Study

    Master-uppsats, KTH/Skolan för industriell teknik och management (ITM)

    Författare :Graham Kirn; [2023]
    Nyckelord :;

    Sammanfattning : Capture and storage of carbon dioxide (CO2) is expected to play an important role in climate change mitigation efforts intended to limit global warming to 1.5 °C. Bioenergy with carbon capture and storage (BECCS), in which carbon is captured during energy generation from sustainably sourced biomass fuels, is of particular interest in Sweden. LÄS MER

  7. 5. Computational investigation of the feasibility touse solid neon moderation for GBAR

    Master-uppsats, Stockholms universitet/Fysikum

    Författare :Lars Gehrmann; [2023]
    Nyckelord :;

    Sammanfattning : The main goal of the GBAR (Graviational Behaviour of Antihydrogen at Rest) experiment is to investigatethe gravitational effect on antimatter by measuring the classical free fall of an antihydrogen atom. The requiredpositrons are created by pair production inside a tungsten target and are moderated using a tungsten mesh. LÄS MER