1,720,952 research outputs found
Scholarly communication in networked environment: problems and prospects
Get PDFThis article gives an overview of how popularity of World Wide Web and open access concepts challenge the existence of traditional scholarly communication. New publishing outlets such as blogs, wiki and podcasting facilitate agile communication channels for scholarly communication. Open access concepts in scholarly communication enable free access of knowledge. Research community and information professionals hope that scholarly communication through Internet makes available wider access of knowledge
Prospective trends in design and operations of chemical processes: Heuristics, intensification, and digitization
No full textGreen Open Access added to TU Delft Institutional Repository 'You share, we take care!' - Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.Complex Fluid Processin
Improving the usability and scalability of FINN, a DNN compiler for FPGAs
No full textFINN is a framework developed by Xilinx Research Labs that compiles Deep Neural Network software descriptions into fast and scalable dataflow architectures for inference acceleration on FPGAs. The dataflowarchitectures are network dependent, sized according to the user-defined throughput requirements, and constrained by available resources on the user-specified FPGA board. Synthesising large neural network designswith a high degree of configurability leads to large build times, spanning from hours to days, to build an entire network. Thus, the first objective of this thesis is to explore and propose a modified FINN accelerator construction methodology that can substantially reduce the build times. The main idea behind our proposal is to reduce the granularity of the architecture to reduce the size of synthesis jobs and to enable logic reuse within and across neural network layers. Using this method, up to 12× speedup in High-Level Synthesis times and up to 2× speedup in end-to-end build times of accelerator networks are achieved.The second limitation that this work addresses relates to the performance scalability of FINN generated architectures. There are two modes of parallelism in FINN that currently provide performance scaling in convolution operations. The first factor, which modifies the number of Processing Elements (PEs), parallelises along the input channels of a convolutional layer and the second factor, that modifies the number of Single Instruction Multiple Data (SIMD) lanes present in each PE, parallelises along the number of output channels ofthe convolution. Computations are currently not parallelisable across the non-depth dimensions of images, i.e., the side containing pixels of images that faces the viewer. This limitation can restrict the achievable performance for networks that contain layers with large image dimensions and shallow depth dimension. The second part of this work leverages the fine-grained construction methodology to augment FINN performance scaling. The proposed approach introduces a generic FINN modification that enables pixel-level parallelism,i.e., multiple output pixels of a convolutional layer can be processed simultaneously by performing Multiple Matrix Vector (MMV) multiplications at the same time. Using this generic method, MMV number of pixels can be processed simultaneously, an MMV times throughput increase can be obtained at the cost of less than MMV × additional resources
Neural Network Based PI Controller Parameter Calculation on a Boiler Drum Level System
No full textAbstractThe controller parameters influence the performance of the closed loop system. So we have to develop a tuning method for obtaining the optimum values of the controller parameters with respect to a particular process. Controller tuning is very much process dependent and any improper selection of the controller settings may lead to instability and affect performance of the closed loop system. Closed loop tuning methods like Ziegler-Nichols method depends on estimation of ultimate gain and ultimate time period. When trying different gains on an unknown process the amplitude of undampened oscillations can become unsafe or on the conversely for low initial gain settings the test can take a long time to reach sustained oscillation condition. This paper proposes a neural network based scheme to estimate ultimate gain and optimum proportional and integral value of PI controller within affordable time limit and safe input range when the parameters change
Regrounding in Place, Regrounding in Truth: The Caste Study of Son of a Sweeper
No full textThis creative media research centers on the lingering discrimination faced by India’s scheduled caste Dalits or “sweepers,” who have been left behind during India’s technological growth and global expansion. The author explores the works of Dirlik and Cresswell to situate Dalits within Global Colonialism. Her collaboration with a Dalit education activist results in a documentary film that highlights his efforts to bring community transformation through academic excellence. As the filmmaker interacted with documentary subject Vimal Kumar in his community, this physical “place within a place” became a small, interpretive world in which she and Kumar worked together to make aesthetic filmmaking choices. Her selection of images and sounds in the editing process created a narrative around Kumar’s activism that became a personal expression of the filmmaker’s presence, grounded in both physical place and social concern. The author suggests collaboration between filmmaker and documentary subject is a negotiation of power that may remedy outsider bias. She asserts that the collaborative space existing between her camera and her documentary subject is transformed into a meaningful place resulting in “collaborative truth.” Such a truth can evoke human emotion and activate the viewer because it expresses a more personal understanding of the human experience
Going Beyond Counting First Authors in Author Co-citation Analysis
Get PDFThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Variations on the Author
Get PDF“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
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