Essays about: "Metastability"

Showing result 1 - 5 of 6 essays containing the word Metastability.

  1. 1. A Study of the Loss Landscape and Metastability in Graph Convolutional Neural Networks

    University essay from KTH/Matematisk statistik

    Author : Sofia Larsson; [2020]
    Keywords : Graph neural networks; Graph convolutional neural networks; Loss landscape; Gradient descent; Stochastic gradient descent; Stochastic gradient Langevin dynamics; Grafneurala nätverk; grafiska faltningsnätverk; lösningslandskap; gradientmetoder; stokastiska gradientmetoder; stokastisk gradient Langevin dynamik;

    Abstract : Many novel graph neural network models have reported an impressive performance on benchmark dataset, but the theory behind these networks is still being developed. In this thesis, we study the trajectory of Gradient descent (GD) and Stochastic gradient descent (SGD) in the loss landscape of Graph neural networks by replicating Xing et al. READ MORE

  3. 2. Interfaces in complex InAs-GaSb heterostructured nanowires - A transmission electron microscopy study

    University essay from Lunds universitet/Fasta tillståndets fysik; Lunds universitet/Fysiska institutionen

    Author : Louise Uhrgård Gren; [2017]
    Keywords : transmission electron microscope; TEM; aberration corrected S TEM; nanowires; core-shell nanowires; InAs-GaSb; advanced characterization; Technology and Engineering;

    Abstract : In this project epitaxially grown InAs-GaSb complex heterostructured nanowires have been characterized by means of aberration corrected TEM techniques and energy dispersive X-ray spectroscopy (EDX). The InAs-GaSb material is of interest due to its high charge carrier mobility, which has possible applications in electronic devices such as FETs. READ MORE

  4. 3. On the metastability of the Standard Model

    University essay from Uppsala universitet/Teoretisk fysik

    Author : Sebastian Baum; [2015]
    Keywords : Higgs; Standard Model; stability; metastability;

    Abstract : With the discovery of a particle consistent with the Standard Model (SM) Higgs at the Large Hadron Collider (LHC) at CERN in 2012, the final ingredient of the SM has been found. The SM provides us with a powerful description of the physics of fundamental particles, holding up at all energy scales we can probe with accelerator based experiments. READ MORE

  5. 4. Time to Digital Converter used in ALL digital PLL

    University essay from KTH/Skolan för informations- och kommunikationsteknik (ICT)

    Author : Chen Yao; [2011]
    Keywords : All Digital PLL; Time to Digital Converter TDC ; Sensed Amplifier Flip Flop SAFF ; Current Starved; Vernier delay line;

    Abstract : This thesis proposes and demonstrates Time to Digital Converters (TDC) with high resolution realized in 65-nm digital CMOS. It is used as a phase detector in all digital PLL working with 5GHz DCO and 20MHz reference input for radio transmitters. Two kinds of high resolution TDC are designed on schematic level including Vernier TDC and parallel TDC. READ MORE

  6. 5. Design and implementation of comparator for sigma delta modulator

    University essay from Institutionen för systemteknik

    Author : Noor Aizad; [2006]
    Keywords : comparator; sigma; delta; offset; metastability; latched;

    Abstract : Comparator is the main building block in an ADC architecture. Main purpose of the comparator is to compare a signal with a reference signal and produce an output depending on whether the input signal is greater or smaller than reference. Many architectures for comparators exist for various purposes. READ MORE