1,699 research outputs found

    Relativistic model of hidden bottom tetraquarks

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    The relativistic model of the ground state and excited heavy tetraquarks with hidden bottom is formulated within the diquark-antidiquark picture. The diquark structure is taken into account by calculating the diquark-gluon vertex in terms of the diquark wave functions. Predictions for the masses of bottom counterparts to the charm tetraquark candidates are given.Comment: 6 page

    Prediction of windage power loss in alternators

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    Simplified equations and constants, based on laminar and turbulent flow theory between parallel plates, estimate windage loss in rotating electrical machinery. Comparison of calculated results and experimental data for smooth cylindrical rotor and slotted alternator yields 7 percent maximum variation between calculated and experimental data

    Investigation of the kinetics of crystallization of several high temperature glass systems Quarterly status report, 1 May - 31 Jun. 1970

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    Crystallization kinetics and impact tests of glass fiber-epoxy composite

    Clusters in the distribution of pulsars in period, pulse-width, and age

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    The question of whether pulsars form a single group or whether pulsars come in two or more different groups is discussed. It is proposed that such groups might be related to several factors such as the initial creation of the neutron star, or the orientation of the magnetic field axis with the spin axis. Various statistical models are examined

    Assembly via disassembly: A case in machine perceptual development

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    First results in the effort of learning about representations of objects is presented. The questions attempted to be answered are: What is innate and what must be derived from the environment. The problem is casted in the framework of disassembly of an object into two parts

    Media Content Analysis of Governmental Impact on Terrorist Reporting

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    When terrorism occurs, the government has to respond to it. The media also has the need to respond to terrorism if it is to report the news. Therefore, if both have a connection to terrorism, how do they work together, how do they impact each other, and is the Agenda Setting Theory useful to them? Using three recent attacks, the Boston Marathon Bombing, the Manchester Arena Attack, and the Orlando Nightclub Shooting, this paper analyzes the kind of wording used by the media reporting on terrorism and how the government influences that wording through press releases. The study hypothesizes that charged language in media reports increases after a government press release when the government provides an update or new information on a terrorist attack, while neutral language remains relatively the same or decrease slightly in occurrence. Using four neutral words: bombing or shooting, incident/event, investigation, and attack, as well as four charged words: ‘terror’, Islamist, extremist, and criminal, a content analysis will be done on articles from CNN, Fox News, New York Times, The Times, Le Monde, and Irish Independent published before and after a government press release about each event. When comparing how often each word occurs, the hypothesis was not supported by the data

    How do robots take two parts apart

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    This research is a natural progression of efforts which begun with the introduction of a new research paradigm in machine perception, called Active Perception. There it was stated that Active Perception is a problem of intelligent control strategies applied to data acquisition processes which will depend on the current state of the data interpretation, including recognition. The disassembly/assembly problem is treated as an Active Perception problem, and a method for autonomous disassembly based on this framework is presented
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