Essays about: "Penrose"

Showing result 1 - 5 of 15 essays containing the word Penrose.

  1. 1. Design of a grating lobe mitigated antenna array architecture integrated with low loss PCB filtering structures

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

    Author : Eduardo Salvador Lopez; [2023]
    Keywords : Band-pass filters; Beam forming networks; Irregular subarrays; Particle Swarm Optimization; PCB; Penrose tessellation; Planar phased arrays; Quantization lobes; Scanning; Suspended stripline; Bandpassfilter; lobformning; matningsnätverk; Irreguljära gruppantenner; Particle Swarm Optimization; PCB; Penrose tessellation; Plana fasade gruppantenner; sidlober; Utstyrningsvinkel; Suspended stripline;

    Abstract : Massive multiple input multiple output - MIMO systems are a reality and modern communication systems rely upon this technology to cope with the increasing need for capacity and network usage. Antenna arrays are at the heart of the of the massive-MIMO system and are the enabling technology. READ MORE

  3. 2. Electrodynamic field at spatial infinity

    University essay from KTH/Fysik

    Author : Jakob Myhrman; [2022]
    Keywords : Spatial infinity; Conformal rescaling; Minkowski space; Penrose Diagram; Einstein universe; Newman-Penrose formalism; Sigma-process; Resolution of singularities; Maxwell s equations; Cylinder at spatial infinity; Rumslig oändlighet; Konform omskalning; Minkowski rummet; Penrose Diagram; Einsteins universum; Newman-Penrose formalismen; Sigma-processen; Singularitetupplösning; Maxwells ekvationer; Cylindern vid rumslig oändlighet;

    Abstract : The treatment of spatial infinity is one of the remaining major open problems in the theory of isolated self-gravitating systems. Especially when one wants to model scattering of gravitational radiation in spacetime. In this thesis the conformal theory is used to study simple electromagnetic fields, close to spatial infinity. READ MORE

  4. 3. A Case Study of the Swedish Steel Company SSAB AB and the Contributing Factors to its Commitment to Green Transition

    University essay from Stockholms universitet/Institutionen för ekonomisk historia och internationella relationer

    Author : Kerija Danovska; [2022]
    Keywords : fossil-free steel; commitment to green transition; SSAB AB; policy window; policy entrepreneurs; development pair and networks; resource theory;

    Abstract : This paper analyzes Swedish steel company’s SSAB commitment to the green transition focusing on how and why aspects. The how part of this problem relates to topical conjunctures, which emerge independently of a company. READ MORE

  5. 4. Lucas and Penrose vs. Computationalism: A Refutation of the Gödel-arguments

    University essay from Lunds universitet/Teoretisk filosofi

    Author : Leonard Nygren Löhndorf; [2021]
    Keywords : Computationalism; Mechanism; Kurt Gödel; logic; incompleteness; metamathematics; Philosophy and Religion;

    Abstract : John Lucas and Roger Penrose attempted to refute Computationalism, the theory that the human mind is a computational system. They did so by utilizing meta-mathematical proofs by Kurt Gödel. READ MORE

  6. 5. 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