M.V. Cerrillo, E.F. Bolinder. / "August 15, 1952." / Bibliography: p. 168. / Army Signal Corps Contract DA36-039 sc-100 Project 8-102B-0 Dept. of the Army Project 3-99-10-022

Manuel V. Cerrillo, Ernest A. Guillemin. / "June 4, 1952." / Bibliography: p. 46. / Army Signal Corps Contract DA36-039 sc-100 Project 8-102B-0 Dept. of the Army Project 3-99-10-022

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For many years, accounting discourse has been concerned with the measurement of attributes of accounting events. The concept of measurement forms one of the central pillars on which the preparation of financial statements is based. For example, financial statements can only be prepared if economic events meet the definition of an element of the financial statements and have a cost or value that can be measured with reliability. This has created the belief that accounting practices are practices of measurement. The principles of measurement require that every process of measurement be based on an appropriate theory of measurement. Given the belief in the accounting discipline that accounting practices are synonymous with practices of measurement, it is to be assumed that acceptable theories of measurement exist in the discipline. However, over the decades, researchers in this field have been unsuccessful in creating an acceptable theory of accounting measurement. This suggests that there is a gap between the accounting concept of measurement and the scientific principles of measurement. The main goals of this thesis are to determine whether the concept of measurement in accounting is in harmony with the principles of the representational theory of measurement and to develop a conceptual model of the accounting measurement problem. Representational theory establishes measurement in the social sciences. Accounting is regarded as a social science. This study applies the principles of the representational theory of measurement to determine the nature of the gap between the accounting concept of measurement and the principles of this theory. The very fact of referring to accounting as a measurement discipline implies the presence of an established and well-known theory of measurement in that discipline: a discipline cannot be referred to as a measurement discipline without the existence of such a theory. Therefore, the lack of success of researchers in creating a theory of accounting measurement suggests that accounting is not a measurement discipline and that accountants are currently unaware of this. To test this hypothesis: 1. A critical literature analysis was conducted, investigating whether the accounting concept of measurement is in harmony with the principles of the representational theory of measurement. The results of this analysis indicated that the accounting concept of measurement is not in harmony with the principles of the representational theory of measurement. 2. A questionnaire was sent to accountants, testing whether they were familiar with the principles of the representational theory of measurement and their application to the accounting discipline. The results of the survey indicated that accountants are not familiar with the principles of the representational theory of measurement or their application to the accounting discipline. The main contributions of this study lie in the fact that it reveals that current accounting practices are not in harmony with the principles of representational measurement. Accountants should be educated in the purpose of the principles of measurement in the social sciences in order to ensure their proper application during accounting measurement. / Thesis (DCom)--University of Pretoria, 2009. / Financial Management / unrestricted

Call number: LD2668 .T4 1985 B78 / Master of Science

Thesis (Ph. D. in Mathematics)--Vanderbilt University, Aug. 2006. / Title from title screen. Includes bibliographical references.

Thesis (Ph.D. (Mathematics)) -- University of Limpopo, 2021 / A finite group G is called (l, m, n)-generated, if it is a quotient group of the triangle group T(l, m, n) = x, y, z|xl = ym = zn = xyz = 1-. In [43], Moori posed the question of finding all the (p, q, r) triples, where p, q and r are prime numbers, such that a non-abelian finite simple group G is a (p, q, r)-generated. In this thesis, we will establish all the (p, q, r)-generations of the following groups, the Mathieu sporadic simple group M23, the alternating group A11 and the symplectic group Sp(6, 2). Let X be a conjugacy class of a finite group G. The rank of X in G, denoted by rank(G : X), is defined to be the minimum number of elements of X generating G. We investigate the ranks of the non-identity conjugacy classes of the above three mentioned finite simple groups. The Groups, Algorithms and Programming (GAP) [26] and the Atlas of finite group representatives [55] are used in our computation / University of Limpopo

Orientador: Olivâine Santana de Queiroz / Dissertação (mestrado) - Universidade Estadual de Campinas, Instituto de Matemática, Estatística e Computação Científica / Made available in DSpace on 2018-08-20T15:36:39Z (GMT). No. of bitstreams: 1 Almeida_FernandaPereiradaSilva_M.pdf: 1905299 bytes, checksum: 26428236d161990046f1d1f982482fe1 (MD5) Previous issue date: 2012 / Resumo: Na dissertação foi estudado um problema elíptico em um domínio limitado com bordo Lipschitz. Parte da fronteira deste domínio está em movimento e oscila rapidamente na variável que representa o espaço, caracterizando-se assim como um problema de fronteira livre com multi escala. Este problema tem aplicações, por exemplo, na construção de filmes semicondutores, levando-se em consideração que a superfície do filme se altera pela deposição de vapor químico. O estudo de tal modelo nos remete a questões de existência e unicidade para um sistema elíptico com condições de bordo do tipo misto acoplado à uma equação hiperbólica através de uma condição de fronteira livre. Além disso, um resultado de aproximação por homogeneização é demonstrado. De fato, provamos uma estimativa na norma H1 para o erro que se comete ao aproximar a fronteira livre real por uma fronteira livre homogeneizada / Abstract: In this dissertation we study an elliptic problem in a bounded Lipschitz domain. Part of the boundary is moving and oscillates rapidly in the variable representing the space. Thus, we have a multi-scale free boundary problem. This problem has applications, for instance, in the construction of semiconductor films taking into account that the surface of the film is changing by chemical vapor deposition. The study of such a model leads us to questions of existence and uniqueness for a system involving an elliptic equation with mixed boundary conditions coupled to a hyperbolic equation by means of a free boundary condition. Furthermore, a result on approximation by homogenization is shown. In fact, an estimate in terms of the H1-norm of the error committed by to approximate the real free boundary problem by the homogenized one is proved / Mestrado / Matematica / Mestre em Matemática

La méthode des régions-solutions a été développée par Frigon [7] en 2018 pour montrer l'existence de solutions à des équations différentielles ordinaires de premier ordre, dont le graphe d'une solution se trouve à l'intérieur d'une région-solution \(R \subset [0, T] \times \mathbb{R}^{N}\). Cette méthode est en particulier une généralisation des sous et sur-solutions et des tubes-solutions. On présente cette méthode et certains résultats d'existence qui en découlent. D'autre part, la dérivée de Stieltjes, communément appelée \(g\)-dérivée, est le fruit du travail de Pouso et Rodríguez [20] en 2014, permettant l'unification des équations différentielles classiques, des équations aux échelles de temps et des équations différentielles avec impulsions. Elle est en particulier liée au théorème fondamental du calcul pour l'intégrale de Lebesgue-Stieltjes. On présente la base de cette théorie dans un premier temps, puis la façon dont cette \(g\)-dérivée généralise d'autres types d'équations différentielles ou aux échelles de temps. On introduit en particulier la notion de \((g \times I_{\mathbb{R}^{N}})\)-différentiabilité et des résultats qui découlent de cette définition. On présente de plus une fonction exponentielle qui permet de résoudre les équations différentielles de Stieltjes linéaires, introduite par Frigon et Pouso [8]. Le but de ce mémoire est de généraliser la méthode des régions-solutions, dont la généralisation s'appellera \(g\)-région-solution, afin de montrer l'existence de solutions aux équations différentielles de Stieltjes. On présente plusieurs exemples de \(g\)-régions admissibles et de \(g\)-régions-solutions, puis des théorèmes d'existence se basant sur cette méthode. On donne de plus des exemples où on applique ces théorèmes. On termine ce mémoire en présentant deux applications des théorèmes d'existence à l'évolution d'une population de cerfs de Virginie ainsi qu'à l'évolution de la tension générée par une diode à effet tunnel résonnant (DTR) dirigée vers une diode laser (DL). / The method of solution-regions has been developed by Frigon [7] in 2018 to show the existence of solutions for first-order ordinary differential equations, where the graph of a solution is inside a solution-region \(R \subset [0, T] \times \mathbb{R}^{N}\). This method is in particular a generalization of the lower and upper solutions and of the solution-tubes. We show this method and some existence results which follow. On the other hand, the Stieltjes derivative, more commonly called \(g\)-derivative, is the fruit of the work of Pouso and Rodríguez [20] in 2014, which unifies classic differential equations, equations on time scales and differential equations with impulses. In particular, it leads to the fundamental theorem of calculus for the Lebesgue-Stieltjes integral. We start by showing the basis of this theory, and then the way this \(g\)-derivative generalizes other types of differential or time scale equations. We introduce in particular the \((g \times I_{\mathbb{R}^{N}})\)-differentiability and results that follow from this definition. Furthermore, we present an exponential function which solves linear Stieltjes differential equations. The goal of this thesis is to generalize the method of solution-regions, where the generalization will be called \(g\)-solution-region, to show the existence of solutions for Stieltjes differential equations. We present multiple examples of \(g\)-admissible regions and \(g\)-solution-regions, then we establish existence theorems based on this method. We also show examples where we apply these theorems. Finally, we end this thesis by showing two applications of the existence theorems to the evolution of a population of white-tailed deer and to the evolution of the voltage generated by a resonant tunneling diode (RTD) to a laser diode (LD).