Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 50 for “"Penrose"”.
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Overcoming the Penrose Stairs of history: the legislated treatment of the 'designated groups' within a hierarchy of discrimination approach
A Penrose Staircase- an impossible object always ending ascending yet constantly descending and ending as an illusion. This is Employment Equity legislation in South Africa with its purported aim of redressing the disadvantages of its designated groups. It is legislation that aims to promote equal …
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Conformal Properties of Spacetime
… by studying a property first introduced by Roger Penrose as a consistency condition for possible constructions of quantum gravity. In an asymptotically flat spacetime, this property, which we call the Penrose property, is satisfied if for any two endless timelike curves λ, ν in the same domain of …
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Rank equalities related to generalized inverses of matrices and their applications
… of matrix expressions that involve the Moore-Penrose inverse, the group inverse, the Drazin inverse, as well as the weighted Moore-Penrose inverse of matrices. Through this method we establish a variety of valuable rank equalities related to generalized inverses of matrices mentioned above. …
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Buracos negros, singularidades e conjectura da censura cósmica
… será abordado como construir diagramas de Penrose para certas métricas e, com o auxílio deles, serão analisadas as estruturas causais dos seus respectivos espaços-tempos. Focaremos nossa análise para a regiões de buraco negro e singularidades - caso a métrica possua essas propriedades - e …
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LAWS OF LARGE NUMBERS AND CENTRAL LIMIT THEOREMS FOR RANDOM GEOMETRIC MEASURES. A COMPUTATIONAL APPROACH
… Theorem (CLT) for random measures proved by Penrose in [4]. In particular we analyze some random measures associated with a segment process, a Voronoi tessellation and a Johnson-Mehl tessellation constructed on an underlying 2-dimensional point process. In the result by Penrose, this point …
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New approaches to higher-dimensional general relativity
… classification of the Weyl tensor and the Newman-Penrose formalism. In four dimensions, these techniques have proved useful for studying many aspects of general relativity, and it is hoped that their higher dimensional generalizations will prove equally useful in the future. Unfortunately, many …
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Explorations in a meaning making system: Kerry as an entrepreneurial platform and the equine sector as a cluster
… thinkers including Kegan, Drucker, Porter and Penrose. The central themes of Kerry or the potential for economic development are built into each Essay. Essay One focuses on reflections of Kerry life - on Kerry people within and without Kerry - and events as they affected understandings of how …
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Phase dynamics and magnetic field response of proximity-coupled superconductor arrays
… periodic ""checkerboard"" and quasiperiodic Penrose arrays distinguish structure arising due to the irrational cell area ratios from that due to iii fluxoid quantization over larger areas. The power-law dependence of the current-voltage characteristics as a function of temperature for the …
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Behind the Banner of Patriotism: The New Orleans Chapter of the American Red Cross and Auxiliary Branches 6 and 11 (1914-1917)
Socialite Laura Penrose and a group of wealthy businessmen founded the New Orleans Chapter of the American Red Cross in 1916. The Chapter expanded in 1917 with the addition of two black Auxiliary Branches chartered by nurses Louise Ross and Sarah Brown. Although Jim Crow dictated the division …
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Visual scientific modelling – a visual hypothesis for the nature of consciousness & the evolution of conscious awareness.
… on understandings derived directly from the Penrose interpretation and other competing models of consciousness and their predictions and models of understanding. (Scholarpedia, n.d). therefore, it is wise to have an understanding of models of consciousness and the topics of discussion before …
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“To Happily Lay the Foundation of Patriotism in One Single Englishman”: Women, History Texts, and the Construction of English National Identity, 1820-1870
… texts authored by women such as Elizabeth Penrose, Maria Graham, and Jane Marcet to identify textural themes based on moralization, Protestant religious identity, patriotism and economics, and the abolition of the slave trade. It also contextualizes such texts by using the correspondence of …
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Conformal symmetries in special and general relativity.The derivation and interpretation of conformal symmetries and asymptotic conformal symmetries in Minkowski space-time and in some space-times of general relativity.
… Chapter 6 the conformal rescaling technique of Penrose [54] is used both to support the findings of the previous chapter and to set out a procedure for solution in the general case. It is pointed out that Penrose's conformal technique is preferable to the use of asymptotic expansion methods, …
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SME growth and entrepreneurial abilities: A Penrosian approach to the New Zealand seafood industry
… of related capabilities, to China. According to Penrose (1959), firms use a combination of external and internal resources to grow, but growth is limited essentially by the capabilities of management, and whether entrepreneurial managers see opportunities for growth arising from other possible …
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Automated wavelet analysis of low resolution gamma-ray spectra and peak area uncertainty
… the basis matrix is obtained either by the Moore-Penrose pseudo inversion or by truncated singular value decomposition (TSVD). The results are compared with those given by OriginLab and Gaussian fitting in MATLAB, which are consistent with each other, while TSVD is shown to be more accurate. The …
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BILEVEL OPTIMIZATION FOR FAST CONTROL MOMENT GYRO MANEUVERS
… to this problem are compared with the Moore-Penrose pseudoinverse in optimization and closed-loop guidance environments. It was observed that bilevel optimization solutions result in maneuver time decreases of up to 74% from closed-loop control. Maneuver optimization using pseudoinverse logic …
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Two-dimensional Hořava-Lifshitz theory of gravity.
… structures are investigated in terms of Penrose diagrams. When quantizing the theory in the canonical approach, the integral Hamiltonian constraint in the projectable case will generate the so-called Wheeler-DeWitt equation which can be exactly solved if the invariant length and its …
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Lee Miller. Beyond the muse. A very modern woman: a woman of her time
… model to war correspondent, influenced by Antony Penrose and the Miller estate, has dominated the reading of Miller‟s life and work, as exemplified by the Imperial War Museum‟s exhibition (15 October 2015 – 24 April 2016). This thesis challenges the dominant view of Lee Miller as defined by the …
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Craniofacial morphology and the consequences of intentional cranial deformation among prehistoric Andean populations
… previously considered unaffected by deformation; Penrose (mD2) and Mahalanobis (D2) generalized distances were then calculated for male, female, and pooled sex data using the seven new and seven commonly used older measurements to assess whether the inclusion of affected measurements skewed …
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Underutilized Productive Resources and National Institutions of Corporate Governance: Effects on Firm Innovation Strategy
… on ideas originally articulated by Edith Penrose in The Theory of the Growth of the Firm (1959), I argue that the intensity with which firms engage in innovation development is influenced by heterogeneity in human and physical resource levels within the firm. Moreover, the strength of …
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