Essays about: "multiplicative"

Showing result 1 - 5 of 42 essays containing the word multiplicative.

  1. 1. Problematic social media use and self-rated health among Swedish adolescents : Is the association moderated by perceived familial social support?

    University essay from Stockholms universitet/Institutionen för folkhälsovetenskap

    Author : Åsa Ledel; [2023]
    Keywords : Adolescents; perceived familial social support; HBSC survey; SRH; Sweden; problematic social media use; ungdomar; upplevt föräldrastöd; HBSC; självuppskattad hälsa; Sverige; problematisk sociala medier användning;

    Abstract : The purpose of this study was to explore the association between problematic social media use (PSMU) and self-rated health (SRH) among Swedish adolescent boys and girls, and additionally to examine whether perceived familial social support buffers against poor health in the same association. The study was based on the Health Behaviour in School-aged Children (HBSC) survey from 2017/2018. READ MORE

  3. 2. School pressure and psychosomatic complaints among Swedish adolescents: does physical activity play a buffering role?

    University essay from Stockholms universitet/Institutionen för folkhälsovetenskap

    Author : Alicia Birgersson; [2023]
    Keywords : School pressure; psychosomatic health complaints; physical activity; adolescents; moderation;

    Abstract : Aim: The aim of the study was to explore the association between school pressure and psychosomatic health complaints and the potentially moderating effect of physical activity in a Swedish cohort of adolescents.Method: Cross-sectional data from the Swedish Health Behavior in School-aged Children (HBSC) survey of 2017/2018 was used, with participants aged 11-15 (n=3,745). READ MORE

  4. 3. Constraining the Higgs width in Higgs production associated with a top quark pair

    University essay from Lunds universitet/Fysiska institutionen; Lunds universitet/Teoretisk partikelfysik - Geonomgår omorganisation

    Author : Benjamin Dahlén; [2023]
    Keywords : Higgs; width; cross section; on-shell; off-shell; invariant mass; Standard model; upper bound; Physics and Astronomy;

    Abstract : In this thesis we study the width of the Higgs boson in the process pp → t ̄t 4l at LO using MadGraph5_aMC@NLO to generate the events. The contributions including the Higgs signal, continuum background and interference were considered in order to calculate the expected number of events in a broad range of four-lepton invariant masses. READ MORE

  5. 4. Forecasting post COVID-19 : How to improve forecasting models’ performance when training data has been aected by exceptional events like COVID-19 pandemic?

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

    Author : Lina Shrebati; [2023]
    Keywords : Time Series; Forecasting; COVID-19; Data processing; Optimal transport; Tidsserier; Prognoser; COVID-19; Databehandling; Optimal transport;

    Abstract : Almost every company around the world were aected by the COVID-19 crisis and the government measures that were taken to slow the spread of the virus. The impact the crisis had on the economy caused the appearance of anomalies in the data collected by companies : such as abnormal trend, seasonality etc. READ MORE

  6. 5. Forecasting Monthly Swedish Air Traveler Volumes

    University essay from Uppsala universitet/Statistiska institutionen

    Author : Mark Becker; Peter Jarvis; [2023]
    Keywords : Forecasting; SARIMA; Neural network autoregression; Exponential smoothing; the Prophet model; Random Walk; MAE; MAPE; RMSE;

    Abstract : In this paper we conduct an out-of-sample forecasting exercise for monthly Swedish air traveler volumes. The models considered are multiplicative seasonal ARIMA, Neural network autoregression, Exponential smoothing, the Prophet model and a Random Walk as a benchmark model. READ MORE