Essays about: "Transformation matrix"

Showing result 1 - 5 of 16 essays containing the words Transformation matrix.

  1. 1. On the (1/2,1/2) Representation of the Lorentz Group and the Discrete CPT Symmetries

    University essay from Lunds universitet/Teoretisk partikelfysik

    Author : Nikolaj Skog Pirinen; [2021]
    Keywords : The Lorentz Group; Group Theory; Quantum Field Theory; CPT; Symmetry; Spinors; Representation Theory; Physics and Astronomy;

    Abstract : This thesis derives the explicit form of the elements of the (1/2,1/2) representation of the Lorentz group, by actually performing a direct product of the chiral (1/2,0)- and (0,1/2)-representations. The Lorentz transformations of fourvectors are thereafter recovered from this direct-product representation, allowing the derivation of a transformation matrix between the fourvector- and direct product basis. READ MORE

  2. 2. From Blind Chickens to Lions: A process perspective on a planned change approach with a communication strategy focus

    University essay from Lunds universitet/Företagsekonomiska institutionen

    Author : Hanna Gross; Julia Schnittger; [2020]
    Keywords : Change Management; Planned Organizational Change; Process Perspective; Employee Awareness; Communication; Perceived Value; Sensemaking; IT-tool Implementation; In-depth Case Study; Qualitative Research; Abductive Research Approach; Consultancy; Business and Economics;

    Abstract : Today’s era of digital transformation requires modern organizations to continuously invest in new information technology (IT). Managing an organizational change process always implies challenges and often this process fails to meet its objective. READ MORE

  3. 3. Customer segmentation of retail chain customers using cluster analysis

    University essay from KTH/Matematisk statistik

    Author : Sebastian Bergström; [2019]
    Keywords : Cluster analysis; customer segmentation; tEIGEN; MCLUST; K-means; NMF; Silhouette; Davies-Bouldin; big spenders; statistics; applied mathematics; unsupervised learning; Klusteranalys; kundsegmentering; tEIGEN; MCLUST; K-means; NMF; Silhouette; Davies-Bouldin; storkonsumenter; statistik; tillämpad matematik;

    Abstract : In this thesis, cluster analysis was applied to data comprising of customer spending habits at a retail chain in order to perform customer segmentation. The method used was a two-step cluster procedure in which the first step consisted of feature engineering, a square root transformation of the data in order to handle big spenders in the data set and finally principal component analysis in order to reduce the dimensionality of the data set. READ MORE

  4. 4. Land cover changes in Southern Sweden from the mid-Holocene to present day: insights for ecosystem service assessments

    University essay from Lunds universitet/Institutionen för naturgeografi och ekosystemvetenskap

    Author : Robert O'Dwyer; [2019]
    Keywords : Geography; Geographical Information Systems; GIS; Physical Geography; Götaland; Landscape Reconstruction Algorithm; Fossil Pollen; Ecosystem Services; Earth and Environmental Sciences;

    Abstract : Climate change and human impact play a huge role in the sustainability and development of ecosystems and the services they offer to societies over temporal and spatial scales. Fossil pollen-based estimates provide unique information on past land cover change, but to date there are not many methods able to create spatially continuous maps and have a fine scale of land cover changes inferred from pollen information. READ MORE

  5. 5. Asymptotic Symmetries and Faddeev-Kulish states in QED and Gravity

    University essay from Stockholms universitet/Fysikum

    Author : David Gaharia; [2019]
    Keywords : Faddeev-Kulish; BMS; Bondi-Metzner-Sachs; Asymptotic Symmetries; Asymptotic States; Wilson Lines; Infrared Divergence; Bloch-Nordsieck; Large Gauge Transformations; Fock; QED; Quantum Electrodynamics; Perturbative Quantum Gravity; PQG; U 1 ; Transformations; Mandelstam Quantization;

    Abstract : When calculating scattering amplitudes in gauge and gravitational theories one encounters infrared (IR) divergences associated with massless fields. These are known to be artifacts of constructing a quantum field theory starting with free fields, and the assumption that in the asymptotic limit (i.e. READ MORE