Essays about: "Divergences"

Showing result 1 - 5 of 74 essays containing the word Divergences.

1. 1. Drought resistance of Ectomycorrhizal fungi in the Suillus genus

   University essay from SLU/Dept. of Forest Mycology and Plant Pathology

   Author : Patricia Salén; [2024]
   Keywords : Ectomycorrhiza; drought; Suillus;

   Abstract : Rising instances of drought are causing more tree seedling fatalities post-nursery outplanting. In the face of climate change, fostering resilient forestry practices is imperative for preserving the health and functionality of our forests. READ MORE

3. 2. Fragile Market: The impact of mutual funds on the corporate bond market

   University essay from Handelshögskolan i Stockholm/Institutionen för finansiell ekonomi

   Author : Noah Tvelin; [2023]
   Keywords : Corporate Bonds; Mutual Funds; Fire Sale; Liquidity; Covid-19;

   Abstract : This master's thesis investigates whether mutual funds can induce fire sales on the Swedish corporate bond market between August 2019 and August 2020 to determine whether mutual funds aggravated the COVID-19 crash, and if their solution to temporarily freeze withdrawals were a viable remedy. Moreover, the thesis addresses this question using a panel-data framework that includes mutual fund-specific variables, control variables suggested by previous literature, entity, and time-fixed effects, allowing the thesis to capture divergences between corporate bonds and months. READ MORE

4. 3. Asymptotic Symmetries and Dressed States in QED and QCD

   University essay from Stockholms universitet/Fysikum

   Author : Saimeng Zhou; [2023]
   Keywords : Dressed states; Large gauge transformation; Faddeev-Kulish formalism; Generalized coherent state operator; Wilson line; Infrared divergence; Asymptotic Hamiltonian; QED; QCD;

   Abstract : Infrared divergences arising in theories with massless gauge bosons have been shown to cancel in scattering amplitudes when using dressed states constructed from the Faddeev- Kulish approach to the asymptotic states. It has been established that these states are closely related to asymptotic symmetries of the theory, that is, non-vanishing gauge trans- formations at the asymptotic boundary. READ MORE

5. 4. Analysing Regime-Switching and Cointegration with Hamiltonian Monte Carlo

   University essay from Uppsala universitet/Statistiska institutionen

   Author : Jakob Brandt; [2023]
   Keywords : Time Series Econometrics; Regime-Switching; Cointegration; Markov Chain Monte Carlo; Hamiltonian Monte Carlo;

   Abstract : The statistical analysis of cointegration is crucial for inferring shared stochastic trends between variables and is an important area of Econometrics for analyzing long-term equilibriums in the economy. Bayesian inference of cointegration involves the identification of cointegrating vectors that are determined up to arbitrary linear combinations, for which the Gibbs sampler is often used to simulate draws from the posterior distribution. READ MORE

6. 5. Quantity and quality of oaks (Quercus) as suitable habitats for the longhorn beetle species Plagionotus detritus : An inventory study in Stockholm and Uppsala County, Sweden

   University essay from Uppsala universitet/Institutionen för biologisk grundutbildning

   Author : Ida Widegren; [2023]
   Keywords : Plagionotus detritus; P. detritus; Cerambycidae; Cerambycinae; longhorn beetle; insects; habitat; oak; Quercus; conservation; ecology; endangered; threatened;

   Abstract : The longhorn beetle Plagionotus detritus is associated with newly dead oak wood and is declining throughout its distribution range. In Sweden, P.detritus has displayed one of the most dramatic reductions in distribution recorded for insect species and is near regional extinction. READ MORE