Essays about: "Lu liu"

Showing result 21 - 25 of 91 essays containing the words Lu liu.

  1. 21. The retention of black holes in globular clusters

    University essay from Lunds universitet/Astronomi - Genomgår omorganisation; Lunds universitet/Institutionen för astronomi och teoretisk fysik - Genomgår omorganisation

    Author : Wuxueman Liu; [2021]
    Keywords : Physics and Astronomy;

    Abstract : We simulate the velocities of formed Black Holes to determine the fraction of retained Black Holes in 152 Globular Clusters. The model we used for the escape velocity is from Plummer. The scenarios of the natal kick are Neutronstar like kicks and momentum conserving kicks. READ MORE

  3. 22. Evaluating the suitability of Gaussian process regression and XGBoost on electricity price forcasting

    University essay from Lunds universitet/Matematisk statistik

    Author : Owen Liu; [2021]
    Keywords : Power Markets; Seasonality; Electricity Spot Price; Gaussian Process Regression; XGBoost; Mathematics and Statistics;

    Abstract : Electricity finds itself different from other fresh-ware commodities, it cannot easily be stored. This characteristic trait of electricity results in traditional pricing methods not working for electricity pricing. Thus different pricing schemes are needed, such as Price Forward Curves (PFC) or pricing against a price level. READ MORE

  4. 23. WOMEN WATCHING WOMEN : an Audience Research on Reality TV Show's Engagement and Chinese Women's Identity in "Sisters Who Make Waves"

    University essay from Lunds universitet/Medie- och kommunikationsvetenskap; Lunds universitet/Institutionen för kommunikation och medier

    Author : Shunan Liu; [2021]
    Keywords : Social Sciences;

    Abstract : .... READ MORE

  5. 24. Estimating active layer thickness at the high Arctic study site Zackenberg from remotely sensed ground subsidence

    University essay from Lunds universitet/Institutionen för naturgeografi och ekosystemvetenskap

    Author : Lotte Wendt; [2021]
    Keywords : active layer thickness; DInSAR; subsidence; permafrost; Zackenberg; CALM; Earth and Environmental Sciences;

    Abstract : The active layer thickness (ALT) is an indicator of permafrost thaw, which potentially leads to the release of large amounts of greenhouse gases under global warming, and thus could further amplify climate change. The thaw depth of the active layer also governs seasonal surface deformation, caused by the volume change between ice to water, which poses risks for slope stability and infrastructure foundations. READ MORE

  6. 25. Spherically Symmetric Gravitational Collapse

    University essay from Lunds universitet/Teoretisk partikelfysik - Geonomgår omorganisation

    Author : Lucas Bring; [2021]
    Keywords : gravitational collapse; gravitation; general relativity; black hole; Schwarzschild coordinates; Gullstrand-Painleve coordinates; Friedmann-Robertson-Walker metric; finite-time collapse; Physics and Astronomy;

    Abstract : This thesis presents a derivation of the equation of motion of particles in a dust star, as it undergoes collapse. This is done by finding exact solutions to the Einstein field equations. We follow the original work by Oppenheimer and Snyder, starting from the general spherically symmetric metric in comoving coordinates. READ MORE