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1. |
Record Nr. |
UNINA9910452873603321 |
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Autore |
Fiedler Miroslav |
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Titolo |
Matrices and Graphs in Geometry / / Miroslav Fiedler [[electronic resource]] |
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Pubbl/distr/stampa |
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Cambridge : , : Cambridge University Press, , 2011 |
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ISBN |
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1-139-88657-6 |
1-107-38379-X |
1-107-29917-9 |
0-511-97361-6 |
1-107-39865-7 |
1-107-39023-0 |
1-107-38735-3 |
1-107-39502-X |
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Descrizione fisica |
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1 online resource (viii, 197 pages) : digital, PDF file(s) |
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Collana |
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Encyclopedia of mathematics and its applications ; ; volume 139 |
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Disciplina |
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Soggetti |
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Geometry |
Matrices |
Graphic methods |
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Lingua di pubblicazione |
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Formato |
Materiale a stampa |
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Livello bibliografico |
Monografia |
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Note generali |
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Title from publisher's bibliographic system (viewed on 05 Oct 2015). |
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Nota di bibliografia |
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Includes bibliographical references (p. [193]-194) and index. |
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Nota di contenuto |
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Matricial approach to Euclidean geometry -- Simplex geometry -- Qualitative properties of the angles in a simplex -- Special simplexes -- Further geometric objects -- Applications. |
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Sommario/riassunto |
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Simplex geometry is a topic generalizing geometry of the triangle and tetrahedron. The appropriate tool for its study is matrix theory, but applications usually involve solving huge systems of linear equations or eigenvalue problems, and geometry can help in visualizing the behaviour of the problem. In many cases, solving such systems may depend more on the distribution of non-zero coefficients than on their values, so graph theory is also useful. The author has discovered a method that in many (symmetric) cases helps to split huge systems into smaller parts. Many readers will welcome this book, from undergraduates to specialists in mathematics, as well as non- |
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specialists who only use mathematics occasionally, and anyone who enjoys geometric theorems. It acquaints the reader with basic matrix theory, graph theory and elementary Euclidean geometry so that they too can appreciate the underlying connections between these various areas of mathematics and computer science. |
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2. |
Record Nr. |
UNINA9910795565003321 |
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Autore |
Fademrecht Laura |
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Titolo |
Action recognition in the visual periphery / / vorgelegt von Laura Fademrecht |
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Pubbl/distr/stampa |
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Berlin : , : Logos Verlag, , [2017] |
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©2017 |
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ISBN |
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Descrizione fisica |
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1 online resource (143 pages) |
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Collana |
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MPI Series in Biological Cybernetics |
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Disciplina |
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Soggetti |
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Neurosciences |
Visual pathways |
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Lingua di pubblicazione |
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Formato |
Materiale a stampa |
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Livello bibliografico |
Monografia |
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Note generali |
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PublicationDate: 20170331 |
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Sommario/riassunto |
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Long description: Humans are social beings that interact with others in their surroundings. In a public space, for example on a train platform, one can observe the wide array of social actions humans express in their daily lives. There are for instance people hugging each other, waving to one another or shaking hands. A large part of our social behavior consists of carrying out such social actions and the recognition of those actions facilitates our interactions with other people. Therefore, action recognition has become more and more popular as a research topic over the years. Actions do not only appear at our point of fixation but also in the peripheral visual field. The current Ph.D. thesis aims at understanding action recognition in the human central and peripheral vision. To this end, action recognition processes have been investigated under more naturalistic conditions |
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than has been done so far. This thesis extends the knowledge about action recognition processes into more realistic scenarios and the far visual periphery. In four studies, life size action stimuli were used (I) to examine the action categorization abilities of central and peripheral vision, (II) to investigate the viewpoint-dependency of peripheral action representations, (III) to behaviorally measure the perceptive field sizes of action sensitive channels and (IV) to investigate the influence of additional actors in the visual scene on action recognition processes. The main results of the different studies can be summarized as follows. In Study I a high categorization performance for social actions throughout the visual field with a nonlinear performance decline towards the visual periphery was shown. Study II revealed a viewpoint-dependence of action recognition only in far visual periphery. In Study III large perceptive fields for action recognition were measured that decrease in size towards the periphery. And in Study IV no influence of a surrounding crowd of people on the recognition of actions in central vision and the visual periphery was shown. In sum, this thesis provides evidence that the abilities of peripheral vision have been underestimated and that peripheral vision might play a more important role in daily life than merely triggering gaze saccades to events in our environment. |
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3. |
Record Nr. |
UNIORUON00232431 |
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Autore |
MADARIAGA, Salvador : de |
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Titolo |
On Hamlet / Salvador de Madariaga |
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Pubbl/distr/stampa |
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London, : Frank Cass, 1964 |
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Edizione |
[2nd ed] |
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Descrizione fisica |
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Disciplina |
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Soggetti |
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Shakespeare William |
SHAKESPEARE WILLIAM "HAMLET" CRITICA |
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Lingua di pubblicazione |
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Formato |
Materiale a stampa |
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Livello bibliografico |
Monografia |
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