Evaluation of Methods for Estimating Fractal Dimension in Motor Imagery-Based Brain Computer Interface

A brain computer interface BCI enables direct communication between a brain and a computer translating brain activity into computer commands using preprocessing, feature extraction, and classification operations. Feature extraction is crucial, as it has a substantial effect on the classification accuracy and speed. While fractal dimension has been successfully used in various domains to characterize data exhibiting fractal properties, its usage in motor imagery-based BCI has been more recent. In this study, commonly used fractal dimension estimation methods to characterize time series Katz's method, Higuchi's method, rescaled range method, and Renyi's entropy were evaluated for feature extraction in motor imagery-based BCI by conducting offline analyses of a two class motor imagery dataset. Different classifiers fuzzy k-nearest neighbours FKNN, support vector machine, and linear discriminant analysis were tested in combination with these methods to determine the methodology with the best performance. This methodology was then modified by implementing the time-dependent fractal dimension TDFD, differential fractal dimension, and differential signals methods to determine if the results could be further improved. Katz's method with FKNN resulted in the highest classification accuracy of 85%, and further improvements by 3% were achieved by implementing the TDFD method

Touch-sensitive : cybernetic images and replicant bodies in the post-industrial age

This thesis uses Deleuzian cybernetics to advance upon post-modern accounts of the contemporary image economy. It begins with the hypothesis that the schizophrenic behaviours of late capitalism have induced an irreparable crisis in the inherited `specular economy' (Irigaray). This is manifested as the breakdown of the laws of generalised equivalence between truth, value and meaning and the end of a stable signifier-signified relationship - theorised as the escape of reality into 'hyperreality', or the world become simulation according to Baudrillard. It will expose the insufficiency of post-modern accounts which theorise this crisis in representation via methods which fail to escape their own always already representational terms and it will then rigorously follow through the implications of an image economy which is constituted by simulations which are `genuinely' sourceless, which do not imitate a prior reality but which rather synthesise forces and relations. To escape the closed loop of representationalism, it will divert attention away from the signifier and will concentrate on the sub-representational power of images to re-engineer reality and to re-invent the limits of the body. Using the theory and practice of Deleuze, Spinoza, Bergson, Benjamin and Virilio, it will treat images as planes of corporeal becoming - as material entities, virtual avatars, possessional states and conductors of pre-personal affect. Post-modem accounts which cite the overwhelming predominance of images sit uncomfortably with the theories of French anti-ocularcentrism - accessed here via Irigaray and Lyotard - which mark the demise of vision and its attached representational order. This paradox requires that a new perceptual relation be mapped - figured here as entirely corporeal, as tactile and synesthetic (Mcluhan) and therefore immersive. Both 'affect' and 'intensity', as modes of pre-personal perception, will be treated as tactile interactions for these responses to images demand that a body be always 'in touch' with its environment, always anorganically altering its perceptual capacities by rules of feedback. It will be argued that in this reality studio, the body no longer perceives via a specular light source, solid form and assumed phallocentric meaning. The proposed synthesis between cybernetic imaging technologies, immanent perceptual criteria and the ever-changing state of the body requires an engagement with the female since she bears a privileged relation to this scenario. In the specular economy, women have been assumed, like faithful images, to secondarily reproduce an underlying, phallocentric truth. However, it will be shown that just as images can work nonrepresentationally, so too can female bodies; on the one hand appearing representational but on the other conducting radically subversive effects. Where bodies and images are such simulatory becomings it will be shown how the female is neither representationally ordered (social constructivism) nor essentially defined (biological reductivism) but is rather cybernetically engineered. Throughout, her privileged access to the virtual realm beyond language will be used to substantiate the major claim of this thesis that cybernetic simulation is more concerned with the material alteration of an environment rather than with the implementation of linguistic obligation

Abstracts on Radio Direction Finding (1899 - 1995)

The files on this record represent the various databases that originally composed the CD-ROM issue of "Abstracts on Radio Direction Finding" database, which is now part of the Dudley Knox Library's Abstracts and Selected Full Text Documents on Radio Direction Finding (1899 - 1995) Collection. (See Calhoun record https://calhoun.nps.edu/handle/10945/57364 for further information on this collection and the bibliography). Due to issues of technological obsolescence preventing current and future audiences from accessing the bibliography, DKL exported and converted into the three files on this record the various databases contained in the CD-ROM. The contents of these files are: 1) RDFA_CompleteBibliography_xls.zip [RDFA_CompleteBibliography.xls: Metadata for the complete bibliography, in Excel 97-2003 Workbook format; RDFA_Glossary.xls: Glossary of terms, in Excel 97-2003 Workbookformat; RDFA_Biographies.xls: Biographies of leading figures, in Excel 97-2003 Workbook format]; 2) RDFA_CompleteBibliography_csv.zip [RDFA_CompleteBibliography.TXT: Metadata for the complete bibliography, in CSV format; RDFA_Glossary.TXT: Glossary of terms, in CSV format; RDFA_Biographies.TXT: Biographies of leading figures, in CSV format]; 3) RDFA_CompleteBibliography.pdf: A human readable display of the bibliographic data, as a means of double-checking any possible deviations due to conversion

Media streams--representing video for retrieval and repurposing

Thesis (Ph. D.)--Massachusetts Institute of Technology, Program in Media Arts & Sciences, 1995.Includes bibliographical references (p. 325-344).by Marc Eliot Davis.Ph.D

Annotated Bibliography Perpustakaan Tun Abdul Razak Issue 1/2019

The Annotated Bibliography Perpustakaan Tun Abdul Razak UNIVERSITI TEKNOLOGI MARA SHAH ALAM is a list of library materials added into the collection of Perpustakaan Tun Abdul Razak in Shah Alam Campus and all others campuses in UiTM. It will be published quaterly (4 issues a year). The listed materials are available in various formats obtained through the procurement process including donation

Seattle Pacific University Catalog 2011-2012

https://digitalcommons.spu.edu/archives_catalogs/1093/thumbnail.jp