Sökning: "Performance Persistence"

Visar resultat 1 - 5 av 70 uppsatser innehållade orden Performance Persistence.

  1. 1. A Multi-Variate Regression Analysis on Telecommunication Sites in a Sub-Saharan Country

    Kandidat-uppsats, KTH/Matematisk statistik

    Författare :Elza Berisha; Hampus Holma; [2023]
    Nyckelord :telecommunication; linear regression; segmentation; cluster analysis; telekommunikation; linjär regression; segmentering; klusteranalys;

    Sammanfattning : The purpose of this bachelor thesis is to investigate how different variables impact voice and data traffic for a telecom operator that operates in an undisclosed Sub-Saharan African country. The data has been provided by said company. LÄS MER

  3. 2. Method development and screening of extractable organofluorine (EOF) and targeted PFAS analysis in food packaging materials

    Kandidat-uppsats, Örebro universitet/Institutionen för naturvetenskap och teknik

    Författare :Nora Larsson; [2022]
    Nyckelord :Per- and polyfluoroalkyl substances PFAS ; Food packaging materials; Extractable organofluorine; Method development; Combustion ion chromatography; Targeted analysis;

    Sammanfattning : Per- and polyfluoroalkyl substances (PFAS) have been manufactured and used in differentapplications for several decades, including food packaging materials. During the last 20 yearsthese compounds have been acknowledged as hazardous for humans and the environment, anddifferent regulations on PFAS have been established on both national and international levels. LÄS MER

  4. 3. Hydrodynamic Modelling of Spread of Perfluoroalkyl Octanoic Sulphonate and Perfluoroalkyl Hexanoic Sulphonate in Lake Ekoln

    Master-uppsats, Uppsala universitet/Luft-, vatten- och landskapslära

    Författare :Prajwol Prajapati; [2022]
    Nyckelord :Hydrodynamic modelling; water quality; PFAS; PFOS; PFHxS; MIKE 3 FM; Ekoln; Fyrisån;

    Sammanfattning : Per and polyfluoroalkyl substances (PFAS) are found ubiquitously in the environment across the globe.These substances have high persistence due to the strong carbon and fluorine bond. In the aquaticenvironment, due to high persistence, these substances don’t decay easily and are detected on the surfaceas well as in groundwater sources. LÄS MER

  5. 4. Parameter Update Schemes for Hidden Markov Models applied to Financial Returns

    Master-uppsats, Lunds universitet/Matematisk statistik

    Författare :Sigfrid Forsberg; [2022]
    Nyckelord :Markov Chain; Finance; Hidden Markov Model; Generalized Autoregressive Score Model; S P-500; Nikkei; Adaptive Model; Volatility; Regime-switching Model; Line-Search Algorithm; Predictor-Corrector; Quasi-Newton; Mathematics and Statistics;

    Sammanfattning : This thesis was dedicated to investigating the use of different parameter update schemes for Hidden Markov models with time-varying parameters, with an emphasis on developing alternatives to the quasi-Newton step. The focus was on applications to financial returns, using data from the S\&P-500 and the Nikkei index, and for comparison, a trial using synthetic data was also performed. LÄS MER

  7. 5. Security and performance impact of client-side token storage methods

    Kandidat-uppsats, Blekinge Tekniska Högskola/Institutionen för programvaruteknik

    Författare :Gustav Fors; Abbas Radhi; [2022]
    Nyckelord :storage; security; performance; tokens;

    Sammanfattning : Applications store more data than ever before, including sensitive information such as user data, credit card information, and company secrets. Due to the value of this data, malicious actors have a financial incentive to employ a variety of attacks against applications in order to gain access to it. LÄS MER