Patents by Inventor David Worthington Hahn
David Worthington Hahn has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 11816622Abstract: Personnel evaluation based on crowdsourcing concepts. An approach to personnel evaluation is described that uses crowd-sourced data and an iterative approach. Individual personnel evaluators are themselves evaluated and assigned weighting factors based on their acumen and accuracy with regard to personnel evaluation. Personnel evaluations are provided by each personnel evaluator, who collectively form a crowdsourcing crowd, and weighted according to each evaluator's assigned weighting factor. The crowd-sourced weighted-averages from all evaluators are combined and used periodically and iteratively to evaluate the individual crowdsourcing participants and to re-calculate their individual weighting factors. The approach provides more accurate and more directed personnel evaluations as compared to simple arithmetic averaging of crowd-sourced data, and is improved with each iteration over time.Type: GrantFiled: August 14, 2017Date of Patent: November 14, 2023Assignee: ScoutZinc, LLCInventors: David Worthington Hahn, Alexander Jerome Willis
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Patent number: 11117810Abstract: Disclosed herein is a method comprising heating a strontium-containing compound using radiation in a first reactor; decomposing the strontium-containing compound into an oxide and carbon dioxide as a result of heat generated by the exposure to the radiation; reacting the oxide and the carbon dioxide in a second reactor; where the oxide and carbon dioxide react to produce heat; heating a working fluid using the heat produced in the second reactor; and driving a turbine with the heated working fluid to generate energy. Disclosed herein too is a composition comprising strontium carbonate; and strontium zirconate; where the mass ratio of strontium carbonate to strontium zirconate 2:8 to 8:2.Type: GrantFiled: March 6, 2019Date of Patent: September 14, 2021Assignee: University of Florida Research Foundation, Inc.Inventors: James Klausner, Kelvin Fnu Randhir, Nicholas AuYueng, Like Li, Nathan Rhodes, Amey Anand Barde, Renwei Mei, David Worthington Hahn
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Publication number: 20210106963Abstract: Disclosed herein is a solar reactor comprising a reactor member; an aperture for receiving solar radiation, the aperture being disposed in a plane on a wall of the reactor member, where the plane is oriented at any angle other than parallel relative to the centerline of the reactor member; a plurality of absorber tubes, wherein the absorber tubes are oriented such that their respective centerlines are at an angle other than 90° relative to the centerline of the reactor member; and wherein the aperture has a hydraulic diameter that is from 0.2 to 4 times a hydraulic diameter of at least one absorber tube in the plurality of absorber tubes; and a reactive material, the reactive material being disposed in the plurality of absorber tubes.Type: ApplicationFiled: December 8, 2020Publication date: April 15, 2021Inventors: James F. Klausner, Joerg Petrasch, Nicholas AuYeung, Ayyoub Mehdizadeh Momen, Rishi Mishra, Jinchao Lu, David Worthington Hahn, Nikhil Sehgal, Renwei Mei, Benjamin Greek, Fotouh A. Al-Raqom, Kyle Allen
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Patent number: 10906017Abstract: Disclosed herein is a solar reactor comprising a reactor member; an aperture for receiving solar radiation, the aperture being disposed in a plane on a wall of the reactor member, where the plane is oriented at any angle other than parallel relative to the centerline of the reactor member; a plurality of absorber tubes, wherein the absorber tubes are oriented such that their respective centerlines are at an angle other than 90° relative to the centerline of the reactor member; and wherein the aperture has a hydraulic diameter that is from 0.2 to 4 times a hydraulic diameter of at least one absorber tube in the plurality of absorber tubes; and a reactive material, the reactive material being disposed in the plurality of absorber tubes.Type: GrantFiled: July 10, 2017Date of Patent: February 2, 2021Assignee: University of Florida Research Foundation, Inc.Inventors: James F. Klausner, Joerg Petrasch, Nicholas AuYeung, Ayyoub Mehdizadeh Momen, Rishi Mishra, Jinchao Lu, David Worthington Hahn, Nikhil Sehgal, Renwei Mei, Benjamin Greek, Fotouh A. Al-Raqom, Kyle Allen
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Publication number: 20190263673Abstract: Disclosed herein is a method comprising heating a strontium-containing compound using radiation in a first reactor; decomposing the strontium-containing compound into an oxide and carbon dioxide as a result of heat generated by the exposure to the radiation; reacting the oxide and the carbon dioxide in a second reactor; where the oxide and carbon dioxide react to produce heat; heating a working fluid using the heat produced in the second reactor; and driving a turbine with the heated working fluid to generate energy. Disclosed herein too is a composition comprising strontium carbonate; and strontium zirconate; where the mass ratio of strontium carbonate to strontium zirconate 2:8 to 8:2.Type: ApplicationFiled: March 6, 2019Publication date: August 29, 2019Inventors: James Klausner, Kelvin Fnu Randhir, Nicholas AuYueng, Like Li, Nathan Rhodes, Amey Anand Barde, Renwei Mei, David Worthington Hahn
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Patent number: 10266420Abstract: Disclosed herein is a method comprising heating a strontium-containing compound using radiation in a first reactor; decomposing the strontium-containing compound into an oxide and carbon dioxide as a result of heat generated by the exposure to the radiation; reacting the oxide and the carbon dioxide in a second reactor; where the oxide and carbon dioxide react to produce heat; heating a working fluid using the heat produced in the second reactor; and driving a turbine with the heated working fluid to generate energy. Disclosed herein too is a composition comprising strontium carbonate; and strontium zirconate; where the mass ratio of strontium carbonate to strontium zirconate 2:8 to 8:2.Type: GrantFiled: April 20, 2016Date of Patent: April 23, 2019Assignee: UNIVERSITY OF FLORIDA RESEARCH FOUNDATION, INCInventors: James Klausner, Kelvin Fnu Randhir, Nicholas AuYueng, Like Li, Nathan Rhodes, Amey Anand Barde, Renwei Mei, David Worthington Hahn
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Publication number: 20190050917Abstract: Enterprise evaluation based on crowdsourcing concepts. An approach to enterprise evaluation is described that uses crowd-sourced data and an iterative approach. Individual enterprise evaluators are themselves evaluated and assigned weighting factors based on their acumen and accuracy with regard to enterprise evaluation. Enterprise evaluations are provided by each enterprise evaluator, who collectively form a crowdsourcing crowd, and weighted according to each evaluator's assigned weighting factor. The crowd-sourced weighted-averages from all evaluators are combined and used periodically and iteratively to evaluate the individual crowdsourcing participants and to re-calculate their individual weighting factors. The approach provides more accurate and more directed enterprise evaluations as compared to simple arithmetic averaging of crowd-sourced data, and is improved over time with each iteration.Type: ApplicationFiled: April 11, 2018Publication date: February 14, 2019Inventors: DAVID WORTHINGTON HAHN, ALEXANDER JEROME WILLIS
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Publication number: 20190050782Abstract: Personnel evaluation based on crowdsourcing concepts. An approach to personnel evaluation is described that uses crowd-sourced data and an iterative approach. Individual personnel evaluators are themselves evaluated and assigned weighting factors based on their acumen and accuracy with regard to personnel evaluation. Personnel evaluations are provided by each personnel evaluator, who collectively form a crowdsourcing crowd, and weighted according to each evaluator's assigned weighting factor. The crowd-sourced weighted-averages from all evaluators are combined and used periodically and iteratively to evaluate the individual crowdsourcing participants and to re-calculate their individual weighting factors. The approach provides more accurate and more directed personnel evaluations as compared to simple arithmetic averaging of crowd-sourced data, and is improved with each iteration over time.Type: ApplicationFiled: August 14, 2017Publication date: February 14, 2019Inventors: DAVID WORTHINGTON HAHN, ALEXANDER JEROME WILLIS
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Patent number: 10072224Abstract: Disclosed herein is a solar reactor comprising a reactor member; an aperture for receiving solar radiation, the aperture being disposed in a plane on a wall of the reactor member, where the plane is oriented at any angle other than parallel relative to the centerline of the reactor member; a plurality of absorber tubes, wherein the absorber tubes are oriented such that their respective centerlines are at an angle other than 90° relative to the centerline of the reactor member; and wherein the aperture has a hydraulic diameter that is from 0.2 to 4 times a hydraulic diameter of at least one absorber tube in the plurality of absorber tubes; and a reactive material, the reactive material being disposed in the plurality of absorber tubes.Type: GrantFiled: June 10, 2014Date of Patent: September 11, 2018Assignee: UNIVERSITY OF FLORIDA RESEARCH FOUNDATION, INC.Inventors: James F. Klausner, Joerg Petrasch, Nicholas AuYeung, Ayyoub Mehdizadeh Momen, Rishi Mishra, Jinchao Lu, David Worthington Hahn, Nikhil Sehgal, Renwei Mei, Benjamin Greek
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Publication number: 20180037466Abstract: Disclosed herein is a method comprising heating a strontium-containing compound using radiation in a first reactor; decomposing the strontium-containing compound into an oxide and carbon dioxide as a result of heat generated by the exposure to the radiation; reacting the oxide and the carbon dioxide in a second reactor; where the oxide and carbon dioxide react to produce heat; heating a working fluid using the heat produced in the second reactor; and driving a turbine with the heated working fluid to generate energy. Disclosed herein too is a composition comprising strontium carbonate; and strontium zirconate; where the mass ratio of strontium carbonate to strontium zirconate 2:8 to 8:2.Type: ApplicationFiled: April 20, 2016Publication date: February 8, 2018Inventors: James Klausner, Kelvin Fnu Randhir, Nicholas AuYueng, Like Li, Nathan Rhodes, Amey Anand Barde, Renwei Mei, David Worthington Hahn
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Publication number: 20170304794Abstract: Disclosed herein is a solar reactor comprising a reactor member; an aperture for receiving solar radiation, the aperture being disposed in a plane on a wall of the reactor member, where the plane is oriented at any angle other than parallel relative to the centerline of the reactor member; a plurality of absorber tubes, wherein the absorber tubes are oriented such that their respective centerlines are at an angle other than 90° relative to the centerline of the reactor member; and wherein the aperture has a hydraulic diameter that is from 0.2 to 4 times a hydraulic diameter of at least one absorber tube in the plurality of absorber tubes; and a reactive material, the reactive material being disposed in the plurality of absorber tubes.Type: ApplicationFiled: July 10, 2017Publication date: October 26, 2017Inventors: James F. Klausner, Joerg Petrasch, Nicholas AuYeung, Ayyoub Mehdizadeh Momen, Rishi Mishra, Jinchao Lu, David Worthington Hahn, Nikhil Sehgal, Renwei Mei, Benjamin Greek, Fotouh A. Al-Raqom, Kyle Allen
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Publication number: 20160122670Abstract: Disclosed herein is a solar reactor comprising a reactor member; an aperture for receiving solar radiation, the aperture being disposed in a plane on a wall of the reactor member, where the plane is oriented at any angle other than parallel relative to the centerline of the reactor member; a plurality of absorber tubes, wherein the absorber tubes are oriented such that their respective centerlines are at an angle other than 90° relative to the centerline of the reactor member; and wherein the aperture has a hydraulic diameter that is from 0.2 to 4 times a hydraulic diameter of at least one absorber tube in the plurality of absorber tubes; and a reactive material, the reactive material being disposed in the plurality of absorber tubes.Type: ApplicationFiled: June 10, 2014Publication date: May 5, 2016Inventors: James F. Klausner, Joerg Petrasch, Nicholas AuYeung, Ayyoub Mehdizadeh Momen, Rishi Mishra, Jinchao Lu, David Worthington Hahn, Nikhil Sehgal, Renwei Mei, Benjamin Greek
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Patent number: 8939966Abstract: Methods for imaging or optical sensing of a material are provided. A first fluorescent image or optical signal of a material can be recorded, the material can be perturbed, and then a second fluorescent image or optical signal of the material can be recorded. The two fluorescent images or signals can be subtracted to give a differential image or optical signal.Type: GrantFiled: August 21, 2009Date of Patent: January 27, 2015Assignee: University of Florida Research Foundation, Inc.Inventor: David Worthington Hahn
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Patent number: 8319964Abstract: A method and apparatus for analyzing a target material is provided. A first laser beam pulse can be incident on a target material to create an ablation event so as to produce an ablation plume of target material. Such ablation events can include plasma ablation, sub-plasma ablation, and thermal desorption. At least a portion of the ablation plume of target material can then be transported a sufficient distance away from the ablation event that a second laser beam pulse can interact with the at least a portion of the ablation plume of target material to create an analytical plasma such that the analytical plasma is uncoupled from the ablation event. The creation of the analytical plasma results in one or more elements of the at least a portion of the ablation plume of target material undergoing atomic emission, which can be collected and analyzed.Type: GrantFiled: July 12, 2010Date of Patent: November 27, 2012Assignee: University of Florida Research Foundation, Inc.Inventor: David Worthington Hahn
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Publication number: 20120099103Abstract: Embodiments of the invention relate to a method and apparatus for analyzing a target material. Specific embodiments can be referred to as laser ablation laser-induced breakdown spectroscopy (LA-LIBS). Embodiments of the invention relate to the use of a first laser beam pulse incident on a target material to create an ablation event so as to produce an ablation plume of target material. Such ablation events can include, for example, plasma ablation, sub-plasma ablation, and thermal desorption. At least a portion of the ablation plume of target material can then be transported a sufficient distance away from the ablation event that a second laser beam pulse can interact with the at least a portion of the ablation plume of target material to create an analytical plasma such that the analytical plasma is uncoupled from the ablation event.Type: ApplicationFiled: July 12, 2010Publication date: April 26, 2012Applicant: University of Florida Research Foundation, Inc.Inventor: David Worthington Hahn
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Publication number: 20110137179Abstract: Methods for imaging or optical sensing of a material are provided. A first fluorescent image or optical signal of a material can be recorded, the material can be perturbed, and then a second fluorescent image or optical signal of the material can be recorded. The two fluorescent images or signals can be subtracted to give a differential image or optical signal.Type: ApplicationFiled: August 21, 2009Publication date: June 9, 2011Applicant: UNIVERSITY OF FLORIDA RESEARCH FOUNDATION, INC.Inventor: David Worthington Hahn
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Patent number: 7207983Abstract: A laser-based refractive surgery system includes a laser source including a laser controller, wherein at least a portion of the incident beam is directed to target eye tissue of a patient. The incident beam portion produces a reflected beam after striking the eye tissue. The system includes at least one detector for detecting the reflected beam. A computer or data processor is communicably coupled to the detector and the laser controller. The computer or data processor generates a cross-correlation function using a plurality of discrete points which digitally represent a waveform representation of the reflected beam and a plurality of reference points. The reference points are preferably associated with a digital representation of the incident beam. The laser controller receives and utilizes the cross-correlation function or parameter derived therefrom, or the ablation rate, and adjusts at least one operating parameter of the laser beam in real-time during a refractive procedure.Type: GrantFiled: April 29, 2005Date of Patent: April 24, 2007Assignee: University of Florida Research Foundation, Inc.Inventors: David Worthington Hahn, Brian T. Fisher
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Patent number: 6998980Abstract: An automatic animal cage monitoring system includes at least one sensor disposed proximate to a cage for detecting conditions within the cage. The sensor data is transmitted by a wireless transmitter system to at least one remotely located device. The system can simultaneously monitor a plurality of cages. A method for remotely monitoring the conditions associated with an animal within a cage includes the step of obtaining sensor data based on at least one condition within the cage and wirelessly transmitting the sensor data to at least one remote location.Type: GrantFiled: May 1, 2003Date of Patent: February 14, 2006Assignee: University of Florida Research Foundation, Inc.Inventors: Herbert Arthur Ingley, III, David Worthington Hahn, August Henry Battles
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Publication number: 20040217858Abstract: An automatic animal cage monitoring system includes at least one sensor disposed proximate to a cage for detecting conditions within the cage. The sensor data is transmitted by a wireless transmitter system to at least one remotely located device. The system can simultaneously monitor a plurality of cages. A method for remotely monitoring the conditions associated with an animal within a cage includes the step of obtaining sensor data based on at least one condition within the cage and wirelessly transmitting the sensor data to at least one remote location.Type: ApplicationFiled: May 1, 2003Publication date: November 4, 2004Inventors: Herbert Arthur Ingley, David Worthington Hahn, August Henry Battles