Aplicación de la uml como herramienta de auxilio en la gestión empresarial

Com a evolução da gestão dos projetos de engenharia de software, dos quais muitas práticas foram retiradas da gestão empresar ial, a documentação destes projetos está cada dia mais completa e refinada, então porque não realizar o caminho inverso, utiliza r à sistemática da diagr amação, esp ecificação e documentação da engenharia de software na gestão empresarial. Este artigo visa aplicar os diagramas d a UML Lingua gem Unificada de Modelagem na gestão empresarial, utilizando os con ceitos da NBR ISO 9001:2000 (sistemas de gestão d a qualidade) e do modelo de excelência de gestão® da Fundação Nacional de Qualidade, e desta forma demonstrar como a UML pode vir a contribuir para a qualidade e competitividade na gestão empresarial

The 2M1 dioctahedral mica polytype: a crystal chemical study

The structure of dioctahedral true micas such as muscovite and celadonitic muscovite (2M1 polytype, Space Group C2/c) is mostly affected by variations of the octahedral Al content ([vi]Al). Crystals with greater Mg, Fe substitutions (i.e., celadonitic muscovite) reduce the dimensional difference between the larger trans-oriented M(1) site and smaller cis-oriented M(2) octahedral site. The octahedral anionic position O(4) is displaced from the center of the hexagon, defined by O(31) and O(32) oxygen atoms (i.e., \u201coctahedral hexagon\u201d), both on and off the (001) plane. The distance between interlayer cation A and O(4) is smaller in more substituted species, thus providing different orientations of the O(4)-H vector, as a function of [vi]Al. Octahedral distances and are expressed as a function of cell parameters and [vi]Al content, thus allowing an approximate estimate of site dimensions. These approximations are useful when a detailed structural refinement is not available. In celadonitic muscovite, the octahedral hexagon mean edge is not significantly affected by [vi]Al content. The [vi]Al increase produces both a decrease in cell lateral dimensions and a distorted \u201coctahedral hexagon\u201d. The decrease in a and b is consistent with a decrease of , whereas the distortion of the \u201coctahedral hexagon\u201d is consistent with an increase of , because an irregular hexagon produces a longer mean edge than a regular hexagon of equal area.The tetrahedral mean basal edge is reduced as celadonitic substitution progresses. The tetrahedral rotation angle \uf02c\uf020was thus found to increase from celadonite to muscovite. However in muscovite with [vi]Al content between 1.8 and 2.0 atoms per formula unit (apfu), \uf020approaches a saturation value, thus showing a proportional increase of tetrahedral and octahedral sheet lateral dimensions. Furthermore, alpha variation allows a coarse approximation of the threshold [vi]Al content, below which celadonitic substitution may not progress

Cristallochimica e caratteristiche termiche di alcune montmorilloniti italiane

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Studio cristallochimico e comportamento termico di solfati naturali eptaidrati: I - Indagine su alcuni termini della serie della melanterite

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The clay minerals in the "Bonarelli level" (Umbrian Apennine, Italy): evidence of their origin

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A mathematical model to distinguisch the members of the dioctahedral smectite series

St atistical (Q-mode) analysis of the chemical compositions of 122 dioctahedral smectites obtained from the literature have enabled the main solid solution ranges (montmorillonite, beidellite and nontronite) to be distinguished on a triangular diagram. In the montmorillonite area, the Wyoming, Tatatilla, Otay, Chambers and Non-Ideal montmorillonite compositional ranges are identified. Certain crystallochemical features of the smectites may be correlated with different genetic environments