51 research outputs found
Hybrid digital-analog computer parallel processor
Describes a hybrid digital-analog computer parallel processing apparatus wherein a template circuit, or multiplicity thereof, is connected to receive parallel digital inputs. Each template circuit has controlled current sources with control gates connected respectively to parallel digital inputs. Current subsources for each pixel normally have programmable current output and “0” or “1” responses. Each template circuit has a current summing device for algebraically adding the current outputs of current sources, while a greatest value is detected at a comparator which may have a ramp signal applied to another input thereby identifying which template produced a maximum indication from the same parallel inputs. A self-calibrating feedback controlled current generator supplies all current sources on a chip making it possible to generate a known comparator input independent of IC resistivity or other parameters. The value of the indication of other templates may also be determined by the time relation of comparator output signals. If templates of the apparatus represent printed character correlation data, the output of the processor would identify the template with maximum indication and character with highest probability from a set of pixel inputs. Similar apparatus can be cascaded to first identify details in a scene and then match such detail charts with second stage templates
The Long-Baseline Neutrino Experiment: Exploring Fundamental Symmetries of the Universe
The preponderance of matter over antimatter in the early Universe, the
dynamics of the supernova bursts that produced the heavy elements necessary for
life and whether protons eventually decay --- these mysteries at the forefront
of particle physics and astrophysics are key to understanding the early
evolution of our Universe, its current state and its eventual fate. The
Long-Baseline Neutrino Experiment (LBNE) represents an extensively developed
plan for a world-class experiment dedicated to addressing these questions. LBNE
is conceived around three central components: (1) a new, high-intensity
neutrino source generated from a megawatt-class proton accelerator at Fermi
National Accelerator Laboratory, (2) a near neutrino detector just downstream
of the source, and (3) a massive liquid argon time-projection chamber deployed
as a far detector deep underground at the Sanford Underground Research
Facility. This facility, located at the site of the former Homestake Mine in
Lead, South Dakota, is approximately 1,300 km from the neutrino source at
Fermilab -- a distance (baseline) that delivers optimal sensitivity to neutrino
charge-parity symmetry violation and mass ordering effects. This ambitious yet
cost-effective design incorporates scalability and flexibility and can
accommodate a variety of upgrades and contributions. With its exceptional
combination of experimental configuration, technical capabilities, and
potential for transformative discoveries, LBNE promises to be a vital facility
for the field of particle physics worldwide, providing physicists from around
the globe with opportunities to collaborate in a twenty to thirty year program
of exciting science. In this document we provide a comprehensive overview of
LBNE's scientific objectives, its place in the landscape of neutrino physics
worldwide, the technologies it will incorporate and the capabilities it will
possess.Comment: Major update of previous version. This is the reference document for
LBNE science program and current status. Chapters 1, 3, and 9 provide a
comprehensive overview of LBNE's scientific objectives, its place in the
landscape of neutrino physics worldwide, the technologies it will incorporate
and the capabilities it will possess. 288 pages, 116 figure
Mapping genomic loci implicates genes and synaptic biology in schizophrenia
Schizophrenia has a heritability of 60-80%1, much of which is attributable to common risk alleles. Here, in a two-stage genome-wide association study of up to 76,755 individuals with schizophrenia and 243,649 control individuals, we report common variant associations at 287 distinct genomic loci. Associations were concentrated in genes that are expressed in excitatory and inhibitory neurons of the central nervous system, but not in other tissues or cell types. Using fine-mapping and functional genomic data, we identify 120 genes (106 protein-coding) that are likely to underpin associations at some of these loci, including 16 genes with credible causal non-synonymous or untranslated region variation. We also implicate fundamental processes related to neuronal function, including synaptic organization, differentiation and transmission. Fine-mapped candidates were enriched for genes associated with rare disruptive coding variants in people with schizophrenia, including the glutamate receptor subunit GRIN2A and transcription factor SP4, and were also enriched for genes implicated by such variants in neurodevelopmental disorders. We identify biological processes relevant to schizophrenia pathophysiology; show convergence of common and rare variant associations in schizophrenia and neurodevelopmental disorders; and provide a resource of prioritized genes and variants to advance mechanistic studies
Mapping genomic loci prioritises genes and implicates synaptic biology in schizophrenia
Schizophrenia has a heritability of 60–80%1, much of which is attributable to common risk alleles. Here, in a two-stage genome-wide association study of up to 76,755 individuals with schizophrenia and 243,649 control individuals, we report common variant associations at 287 distinct genomic loci. Associations were concentrated in genes that are expressed in excitatory and inhibitory neurons of the central nervous system, but not in other tissues or cell types. Using fine-mapping and functional genomic data, we identify 120 genes (106 protein-coding) that are likely to underpin associations at some of these loci, including 16 genes with credible causal non-synonymous or untranslated region variation. We also implicate fundamental processes related to neuronal function, including synaptic organization, differentiation and transmission. Fine-mapped candidates were enriched for genes associated with rare disruptive coding variants in people with schizophrenia, including the glutamate receptor subunit GRIN2A and transcription factor SP4, and were also enriched for genes implicated by such variants in neurodevelopmental disorders. We identify biological processes relevant to schizophrenia pathophysiology; show convergence of common and rare variant associations in schizophrenia and neurodevelopmental disorders; and provide a resource of prioritized genes and variants to advance mechanistic studies
Genomic Dissection of Bipolar Disorder and Schizophrenia, Including 28 Subphenotypes
publisher: Elsevier articletitle: Genomic Dissection of Bipolar Disorder and Schizophrenia, Including 28 Subphenotypes journaltitle: Cell articlelink: https://doi.org/10.1016/j.cell.2018.05.046 content_type: article copyright: © 2018 Elsevier Inc
Recommended from our members
Higher Education in the New Digital Ecosystem
The Year of Open is a joint effort by the University of Texas Libraries and Texas Learning Sciences to raise the profile of open content on the campus of The University of Texas at Austin, in the city of Austin, and in the surrounding area.Randy Bass is Vice Provost for Education and Professor of English at Georgetown University, where he leads the Designing the Future(s) initiative and the Red House incubator for curricular transformation. For 13 years he was the Founding Executive Director of Georgetown’s Center for New Designs in Learning and Scholarship (CNDLS).
He has been working at the intersections of new media technologies and the scholarship of teaching and learning for nearly thirty years, including serving as Director and Principal Investigator of the Visible Knowledge Project, a five-year scholarship of teaching and learning project involving 70 faculty on 21 university and college campuses. In January 2009, he published a collection of essays and synthesis of findings from the Visible Knowledge Project under the title, “The Difference that Inquiry Makes,” (co-edited with Bret Eynon) in the digital journal Academic Commons (January 2009).
From 2003-2009 he was a Consulting Scholar for the Carnegie Foundation for the Advancement of Teaching, where he served, in 1998-99, as a Pew Scholar and Carnegie Fellow. In 1999, he won the EDUCAUSE Medal for Outstanding Achievement in Technology and Undergraduate Education. Bass is the author and editor of numerous books, articles, and electronic projects, including recently, "Disrupting Ourselves: the Problem of Learning in Higher Education" (Educause Review, March/April 2012). He is currently a Senior Scholar with the American Association for Colleges and Universities.UT Librarie
- …