959 resultados para Illumination of books and manuscripts, Medieval.


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First published in 1911.

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Mode of access: Internet.

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People readily perceive smooth luminance variations as being due to the shading produced by undulations of a 3-D surface (shape-from-shading). In doing so, the visual system must simultaneously estimate the shape of the surface and the nature of the illumination. Remarkably, shape-from-shading operates even when both these properties are unknown and neither can be estimated directly from the image. In such circumstances humans are thought to adopt a default illumination model. A widely held view is that the default illuminant is a point source located above the observer's head. However, some have argued instead that the default illuminant is a diffuse source. We now present evidence that humans may adopt a flexible illumination model that includes both diffuse and point source elements. Our model estimates a direction for the point source and then weights the contribution of this source according to a bias function. For most people the preferred illuminant direction is overhead with a strong diffuse component.

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Digitization offers excellent opportunities for the preservation and safe-keeping of valuable library collections. The article recounts the first coordinated attempts of “Ivan Vazov” Public Library – Plovdiv at digitizing some of its treasured collections such as manuscripts, early printed books and archives through partner projects and revealing them to the world community.

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This thesis explores the character of Hamlet in Shakespeare's same-titled work in the light of certain aspects of stoicism and medieval Christian philosophy. Throughout the course of the play we see Hamlet struggling with his thoughts. At first he deliberates without taking action as a consequence of his reasoning, but in the later stages of the play he gives in to passion, which ultimately leads to his own demise. The thesis gives an account of certain aspects of both philosophies that are displayed in the play and shows how those ideas influence the character of Hamlet and contextualize his personal tragedy. Hamlet fails to follow the philosophies that he praises and to grow as a character by overcoming his passions over the course of the play.