Patents by Inventor Xuan Liu
Xuan Liu 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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Publication number: 20140192717Abstract: A method implemented by a network device residing in a service domain, wherein the network device comprises an information centric networking (ICN) transport layer and a service access layer (SAL) for handling context-aware service logistics and service mobility overlaid on the ICN transport layer, the method comprising receiving, in the ICN transport layer, a message comprising a service request that originates from a user equipment (UE), in the SAL, retrieving, from the service request, contextual information relevant to the UE or an access network connected to the UE, determining, based on the contextual information, one or more services needed to execute the service request, and determining one or more service identities (SIDs) each of which identifies one of the one or more services.Type: ApplicationFiled: January 6, 2014Publication date: July 10, 2014Applicant: Futurewei Technologies, Inc.Inventors: Xuan Liu, Ravishankar Ravindran, Guo-Qiang Wang
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Publication number: 20140160462Abstract: A system for assessing the flow of a fluid. The system can include a light source, a fiber-optic system optically coupled to the light source, which is arranged to provide a reference beam and an observation beam, an optical detection system arranged to receive combined light from the reference beam and the observation beam and to provide detection signals, and a data processing system arranged to communicate with the optical detection system to receive the detection signals. The data processing system can be configured to use the detection signals to determine a speckle pattern corresponding to the fluid flow, wherein the speckle pattern includes a plurality of lines, and to calculate a correlation between adjacent lines perpendicular to the flow to determine at least one of a rate of the flow and a displacement of the flow.Type: ApplicationFiled: December 10, 2012Publication date: June 12, 2014Applicant: The Johns Hopkins UniversityInventors: Jin U. KANG, Xuan Liu
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Publication number: 20140164390Abstract: Embodiments relate to generating a trajectory heat map at an aggregated level using computed transit points is provided. An aspect includes generating, by a processing device, a trajectory database from time-stamped global positioning system (GPS) sample points. According to exemplary embodiments, transit points are computed for each trajectory in the trajectory database. A temporal transit graph is constructed from the transit points. The transit graph of embodiments captures the shortest paths among these transit points. The transit graph is then indexed and stored in a spatial-temporal database for online analytic processing.Type: ApplicationFiled: August 9, 2013Publication date: June 12, 2014Applicant: International Business Machines CorporationInventors: Arun Hampapur, Qing He, Xuan Liu, Songhua Xing
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Publication number: 20140160485Abstract: A probe for a common path optical coherence tomography system includes a sheath having a proximal end and a distal end and defining a lumen therein, a single mode optical fiber disposed within the lumen of the sheath such that a portion of the single mode optical fiber extends beyond the distal end of the sheath. The single mode optical fiber has an end face for transmitting and receiving light. The probe also includes a layer of hardened epoxy encasing the portion of the single mode optical fiber that extends beyond the distal end of the sheath except for the end face. The single mode optical fiber has an optical axis extending along a longitudinal direction of the single mode optical fiber. The hardened epoxy is polished at a non-orthogonal angle relative to the optical axis at the end face.Type: ApplicationFiled: December 10, 2012Publication date: June 12, 2014Applicant: The Johns Hopkins UniversityInventors: Jin U. Kang, Xuan Liu
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Publication number: 20140160484Abstract: An axial motion distortion-corrected optical coherence tomography system. The system can include an optical coherence tomography sensor, a light source, a fiber-optic system arranged to provide a reference beam and an observation beam, an optical detection system arranged to receive combined light from the reference beam and the observation beam and to provide detection signals, and a data processing system arranged to receive said detection signals, construct a plurality of A-scans from said detection signals, and construct one or more images from said plurality of A-scans. The data processing system can be configured to correct distortion in the images caused by net axial motion of at least one of said optical coherence tomography sensor or a target of said optical coherence tomography sensor by calculating an estimate of the net axial motion using Doppler shift, and then shifting the A-scans according to the estimate.Type: ApplicationFiled: December 10, 2012Publication date: June 12, 2014Applicant: The Johns Hopkins UniversityInventors: Jin U. KANG, Xuan Liu
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Patent number: 8635249Abstract: Federating multiple-level master data management systems may include a first set of master data management nodes having one or more common characteristics. A first group master data management node may be assigned to centrally manage the first set of master data management nodes, the first group master data management node maintaining master data management functionalities at a group level and providing a single logical view of master data to the first set of master data management nodes. Each master data management node in the first set has data access link with the first group master data management node based on implementation style of said each master data management node.Type: GrantFiled: May 27, 2011Date of Patent: January 21, 2014Assignee: International Business Machines CorporationInventors: Rangachari Anand, Stacy F. Hobson, Juhnyoung Lee, Xuan Liu, Yuan Wang, Jeaha Yang
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Patent number: 8601029Abstract: Managing data stewardship in multi-level MDM systems may include a steward data composer that creates data steward repository for a master data management system to define relationships between data stewards and data objects for which data stewards are responsible and steward data consolidator that creates an integrated data steward repository by combining multiple data steward repositories.Type: GrantFiled: May 27, 2011Date of Patent: December 3, 2013Assignee: International Business Machines CorporationInventors: Rangachari Anand, Stacy F. Hobson, Juhnyoung Lee, Xuan Liu, Jeaha Yang
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Publication number: 20130190734Abstract: A surgical tool system according to an embodiment of the current invention includes a surgical tool, and an interferometry system optically coupled to the surgical tool. The surgical tool includes a body section, a sensor section at least one of attached to or integral with the body section, and a surgical section at least one of attached to or integral with the sensor section at an opposing end of the sensor section from the body section. The sensor section comprises an interferometric optical sensor defining a reference distance that changes in response to at least one of a force or a torque when applied to the surgical section of the surgical tool.Type: ApplicationFiled: July 20, 2011Publication date: July 25, 2013Applicant: The Johns Hopkins UniversityInventors: Russell H. Taylor, Iulian Iordachita, Jin U. Kang, Xuan Liu
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Publication number: 20130144843Abstract: An online data fusion system receives a query, probes a first source for an answer to the query, returns the answer from the first source, refreshes the answer while probing an additional source, and applies fusion techniques on data associated with an answer that is retrieved from the additional source. For each retrieved answer, the online data fusion system computes the probability that the answer is correct and stops retrieving data for the answer after gaining enough confidence that data retrieved from the unprocessed sources are unlikely to change the answer. The online data fusion system returns correct answers and terminates probing additional sources in an expeditious manner without sacrificing the quality of the answers.Type: ApplicationFiled: December 5, 2011Publication date: June 6, 2013Applicant: AT&T INTELLECTUAL PROPERTY I, L.P.Inventors: Divesh Srivastava, Xin Dong, Xuan Liu
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Publication number: 20130128267Abstract: A method for calibrating a Fourier domain optical coherence tomography system includes receiving spectral data from an optical detector comprising a linear array of detector elements, each detector element having a position labeled n, wherein detected light was wavelength-dispersed across the linear array of detector elements; determining parameters of a preselected functional relationship between wave number, kn, corresponding to detector element n as a function of optical detector element n based on the spectral data; further receiving subsequent spectral data subsequent to the first-mentioned receiving, wherein detected light was wavelength-dispersed across the linear array of detector elements; converting the subsequent spectral data using the preselected functional relationship between wave number kn and optical detector element n to obtain converted spectral data; and performing an inverse Fourier transform of the converted spectral data to obtain a depth profile.Type: ApplicationFiled: August 2, 2011Publication date: May 23, 2013Applicant: THE JOHNS HOPKINS UNIVERSITYInventors: Jin Kang, Marcin Arkadiusz Balicki, Xuan Liu
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Publication number: 20130124420Abstract: The invention includes various systems, architectures, frameworks and methodologies that can securely enforce a privacy policy. A method is included for securely guaranteeing a privacy policy between two enterprises, comprising: creating a message at a first enterprise, wherein the message includes a request for data concerning a third party and a privacy policy of the first enterprise; signing and certifying the message that the first enterprise has a tamper-proof system with a privacy rules engine and that the privacy policy of the first entity will be enforced by the privacy rules engine of the first enterprise; sending the message to a second enterprise; and running a privacy rules engine at the second enterprise to compare the privacy policy of the first enterprise with a set of privacy rules for the third party.Type: ApplicationFiled: May 10, 2012Publication date: May 16, 2013Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATIONInventors: Sastry S. Duri, Marco O. Gruteser, Xuan Liu, Paul A. Moskowitz, Ronald Perez, Edith G. Schonberg, Moninder Singh, Jung-Mu Tang, Charles P. Tresser
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Patent number: 8380787Abstract: Federating master data management systems may include a network-aware adapter configured with a host master data management node. The network-aware adapter may establish one or more links with other master data management systems to allow the system to work together and leverage each other's data.Type: GrantFiled: May 27, 2011Date of Patent: February 19, 2013Assignee: International Business Machines CorporationInventors: Rangachari Anand, Stacy F. Hobson, Juhnyoung Lee, Xuan Liu, Bin Wang, Yuan Wang, Jing Min Xu, Jeaha Yang
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Patent number: 8364530Abstract: Methods and apparatus are provided for presenting personalized information to consumers in a retail environment. A personalized price is determined for at least one product that is in physical proximity to the customer. The physical proximity may be determined, for example, by evaluating identifiers, such as RFID tags, associated with each customer and product. A personalized message can be also presented to a customer regarding at least one product that is in physical proximity to the customer. The personalized message can provide, for example, dietary or safety information relevant to the customer and at least one product in the proximity of the customer. The personalized information may be determined based on one or more personalized message rules.Type: GrantFiled: May 27, 2008Date of Patent: January 29, 2013Assignee: Toshiba Global Commerce Solutions Holdings CorporationInventors: Sastry S. Duri, Jeffrey G. Elliott, Jennifer C. Lai, Xuan Liu, Paul A. Moskowitz, Jung-Mu Tang, Todd C. Werden, Danny Chan-Yong Wong
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Publication number: 20130013640Abstract: A system, method and computer program product for mining a rule including spatial information and non-spatial information by using a SAR (Spatial Association Rule) mining tool. The computing system is configured to construct an expanded spatial predicate transaction table for reference spatial objects and a generalized taxonomy for task-relevant spatial objects. The computing system is configured to run the SAR mining tool with the constructed expanded spatial predicate transaction and the generalized taxonomy. The computing system outputs, from the SAR mining tool, a set of generalized spatial association rules for the reference spatial objects. The generalized spatial association rule includes the spatial information and non-spatial information, associated with both the reference spatial objects and the task-relevant spatial objects.Type: ApplicationFiled: July 8, 2011Publication date: January 10, 2013Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATIONInventors: Wei Shan Dong, Arun Hampapur, Zhong Bo Jiang, Hongfei Li, Xuan Liu, Wei Sun
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Publication number: 20130005696Abstract: The present invention provides a class of bufadienolide derivatives representing by the following formula I or pharmaceutically acceptable salts thereof, the preparing process thereof, pharmaceutical composition comprising the same and the use thereof. The bufadienolide derivatives have inhibitory activities against human-derived tumor cell lines, and thus can be used as a drug for treating malignancies.Type: ApplicationFiled: February 20, 2012Publication date: January 3, 2013Applicant: SHANGHAI INSTITUTE OF MATERIA MEDICA, CHINESE ACADEMY OF SCIENCESInventors: Lihong Hu, Dean Guo, Zhiyong Xiao, Xuan Liu, Biao Ma, Min Lei
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Patent number: 8327451Abstract: The invention includes various systems, architectures, frameworks and methodologies that can securely enforce a privacy policy. A method is included for securely guaranteeing a privacy policy between two enterprises, comprising: creating a message at a first enterprise, wherein the message includes a request for data concerning a third party and a privacy policy of the first enterprise; signing and certifying the message that the first enterprise has a tamper-proof system with a privacy rules engine and that the privacy policy of the first entity will be enforced by the privacy rules engine of the first enterprise; sending the message to a second enterprise; and running a privacy rules engine at the second enterprise to compare the privacy policy of the first enterprise with a set of privacy rules for the third party.Type: GrantFiled: June 10, 2008Date of Patent: December 4, 2012Assignee: International Business Machines CorporationInventors: Sastry S. Duri, Marco O. Gruteser, Xuan Liu, Paul A. Moskowitz, Ronald Perez, Edith G. Schonberg, Moninder Singh, Jung-Mu Tang, Charles P. Tresser
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Publication number: 20120303672Abstract: Federating multiple-level master data management systems may include a first set of master data management nodes having one or more common characteristics. A first group master data management node may be assigned to centrally manage the first set of master data management nodes, the first group master data management node maintaining master data management functionalities at a group level and providing a single logical view of master data to the first set of master data management nodes. Each master data management node in the first set has data access link with the first group master data management node based on implementation style of said each master data management node.Type: ApplicationFiled: May 27, 2011Publication date: November 29, 2012Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATIONInventors: Rangachari Anand, Stacy F. Hobson, Juhnyoung Lee, Xuan Liu, Yuan Wang, Jeaha Yang
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Publication number: 20120303673Abstract: Managing data stewardship in multi-level MDM systems may include a steward data composer that creates data steward repository for a master data management system to define relationships between data stewards and data objects for which data stewards are responsible and steward data consolidator that creates an integrated data steward repository by combining multiple data steward repositories.Type: ApplicationFiled: May 27, 2011Publication date: November 29, 2012Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATIONInventors: Rangachari Anand, Stacy F. Hobson, Juhnyoung Lee, Xuan Liu, Jeaha Yang
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Publication number: 20120303692Abstract: Federating master data management systems may include a network-aware adapter configured with a host master data management node. The network-aware adapter may establish one or more links with other master data management systems to allow the system to work together and leverage each other's data.Type: ApplicationFiled: May 27, 2011Publication date: November 29, 2012Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATIONInventors: Rangachari Anand, Stacy F. Hobson, Juhnyoung Lee, Xuan Liu, Bin Wang, Yuan Wang, Jing Min Xu, Jeaha Yang
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Publication number: 20120283516Abstract: A dark field endoscopic microscope includes an illumination system, an objective lens unit arranged in an optical path of the illumination system, an optical fiber bundle optically coupled to the objective lens unit, and an observation system arranged in an optical return path from the optical fiber bundle. The illumination system provides oblique off-axial illumination while axial rays are at least attenuated.Type: ApplicationFiled: May 4, 2012Publication date: November 8, 2012Applicant: The Johns Hopkins UniversityInventors: Jin U. Kang, Xuan Liu