Advanced search

Showing result 1 - 5 of 12 essays matching the above criteria.

  1. 1. Unsupervised Machine Learning Based Anomaly Detection in Stockholm Road Traffic

    University essay from KTH/Skolan för elektroteknik och datavetenskap (EECS)

    Author : Vilma Hellström; [2023]
    Keywords : Anomaly detection; DBSCAN; LSTM; Machine learning; Synthetic anomalies; Unsupervised learning; Anomalidetektering; DBSCAN; LSTM; maskininlärning; syntetiska anomalier; oövervakad inlärning;

    Abstract : This thesis is a study of anomaly detection in vehicle traffic data in central Stockholm. Anomaly detection is an important tool in the analysis of traffic data for improved urban planing. Two unsupervised machine learning models are used, the DBSCAN clustering model and the LSTM deep learning neural network. READ MORE

  3. 2. Data analysis and wake modelling ofthe Lillgrund wind farm

    University essay from KTH/Strömningsmekanik och Teknisk Akustik

    Author : Alessandro Sebastiani; [2019]
    Keywords : ;

    Abstract : This work consists of two parts: the analysis of the operating data collected at Lillgrund between December 2007 and March 2018, and the implementation and evaluation of three wake models. Operational and meteorological data from the Lillgrund wind farm have been analyzed to assess the aerodynamic efficiency and general performance of the farm. READ MORE

  4. 3. Assessment of forcing mechanisms on net community production and dissolved inorganic carbon dynamics in the Southern Ocean using glider data

    University essay from Lunds universitet/Institutionen för naturgeografi och ekosystemvetenskap

    Author : Julia Schütt; [2017]
    Keywords : net community production; geography; physical geography; dissolved inorganic carbon; Southern Ocean; Earth and Environmental Sciences;

    Abstract : In the Subantarctic Zone of the Southern Ocean, a combination of physical forcings, chemical solubility and biological fixation is controlling the carbon uptake and thus the role the Southern Ocean is playing in the remediation of global climate change. Therefore, it is necessary to understand the mechanisms controlling oceanic carbon budgets and to quantify biological uptake rates to make reliable future climate predictions. READ MORE

  5. 4. Gravity and Magnetic Survey, Modelling and Interpretation in the Blötberget Iron-Oxide Mining Area, Bergslagen, Sweden

    University essay from Uppsala universitet/Geofysik

    Author : Ezra Yehuwalashet; [2016]
    Keywords : Blötberget; gravity; Bouguer; magnetic; 3D inversion modelling; surface geology; ore deposit; Blötberget; gravimetri; Bouguer; magnetometri; 3D-modell; ytgeologi; malmfyndighet;

    Abstract : The Blötberget mining area, the focus of this MSc project, is located about 230 km northwest ofStockholm and 12 km southwest of the city of Ludvika (central Sweden). The mining area has beenknown since 1600 for its various types of mineralization particularly iron-oxide deposits (magnetite andhematite) with the mining commenced in 1944. READ MORE

  6. 5. Spatially varying parameters in observed new particle formation events

    University essay from Lunds universitet/Institutionen för naturgeografi och ekosystemvetenskap

    Author : Jimmie Carpman; [2015]
    Keywords : Aerosol; aerosols; particle; modeling; new particle formation; NPF; climate; coagulation; dry deposition; CCN; banana; distribution; number size distribution; spatial variation; spatial; Earth and Environmental Sciences;

    Abstract : Aerosol particles affect the global climate due to its influence on the scattering and absorption of short-wave and long-wave radiation. The extent of the influence of aerosol particles on the climate varies a lot by time and space, and needs to be quantified. READ MORE