Chang, VA
Alice Yali Chang, Alexandria, VA US
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20130160125 | METHOD AND SYSTEM FOR RAPID SIGNATURE SEARCH OVER ENCRYPTED CONTENT - A method for detecting malware includes dividing data to be scanned for malware into at least a first data segment and a second data segment, dividing a signature corresponding to an indication of malware into at least a first signature segment and a second signature segment, performing a relationship function on the first signature segment and the second signature segment yielding a first result, performing the relationship function on the first data segment and the second data segment yielding a second result, comparing the first result and the second result, and, based on the comparison, determining that the data includes information corresponding to the signature. The relationship function characterizes the relationship between at least two information sets. | 06-20-2013 |
Jae Young Chang, Mclean, VA US
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20140379352 | PORTABLE ASSISTIVE DEVICE FOR COMBATING AUTISM SPECTRUM DISORDERS - Exemplary embodiments include an assistive device to facilitate social interactions in autistic individuals by identifying emotions using a voice-detecting machine learning algorithm that extracts emotion content from an audio sample input and outputs the emotional content to a user through a device. This device may be a portable, concealable, real-time and automatic device that may receive and process an audio input. The audio input may be analyzed using a machine learning algorithm. The device may output the closest emotional match to the autistic user. The output may be tactile in nature such as a vibration pattern that is different for different identified emotions. | 12-25-2014 |
Jing C. Chang, Springfield, VA US
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20080314400 | Filter including electrostatically charged fiber material - Provided is a cigarette filter and method for potentially reducing particle breakthrough. The filter includes an adsorbent including adsorbent particles dispersed within the filter and a plug of electrostatically charged fibers. Preferably, the adsorbent is activated carbon. In a preferred embodiment, the electrostatically charged fiber material is located downstream of the activated carbon. Preferably, the electrostatically charged fiber material has permanent electrostatic charges that electrostatically capture the carbon particles to reduce carbon particle breakthrough. In an embodiment, the electrostatically charged fiber material is randomly-oriented so as to mechanically capture particles entrained in mainstream smoke. | 12-25-2008 |
20100006112 | FILTER INCLUDING RANDOMLY-ORIENTED FIBERS FOR REDUCTION OF PARTICLE BREAKTHROUGH - Provided is a cigarette filter and method of making the filter. The filter includes an adsorbent dispersed within the filter and a downstream plug of randomly-oriented fibers. The randomly-oriented fibers mechanically capture adsorbent particles entrained in tobacco smoke. One or more plugs of axially-oriented fibers may also be located upstream and/or downstream of the adsorbent, and are included in an amount sufficient to adjust the length of the filter. | 01-14-2010 |
20110083686 | METHOD AND APPARATUS FOR MANUFACTURE OF SMOKING ARTICLE FILTER ASSEMBLY INCLUDING ELECTROSTATICALLY CHARGED FIBERS - Provided are a method and apparatus for making a cigarette filter assembly for potentially reducing particle breakthrough. The method includes forming a lofty porous network of charge retaining polymer fibers by mechanical, chemical or thermal bonding of the fibers, wrapping the lofty porous network in a cylindrical or tubular shape with optional mediating filter fibers in a filter paper to form a filter plug while maintaining the lofty structure. The charge retaining fibers can be charged to attract and hold particles from such sources as particulate matter from sorbents (preventing break-through), and smoke constituents while having a suitable pressure drop. The apparatus handles the lofty media with minimal crushing, for example, by spacing apart delivery rolls equipped with protrusions to punch, push, and/or pull the lofty media ahead for high speed operation. | 04-14-2011 |
20130331247 | METHOD AND APPARATUS FOR MANUFACTURE OF SMOKING ARTICLE FILTER ASSEMBLY INCLUDING ELECTROSTATICALLY CHARGED FIBERS - Provided are a method and apparatus for making a cigarette filter assembly for potentially reducing particle breakthrough. The method includes forming a lofty porous network of charge retaining polymer fibers by mechanical, chemical or thermal bonding of the fibers, wrapping the lofty porous network in a cylindrical or tubular shape with optional mediating filter fibers in a filter paper to form a filter plug while maintaining the lofty structure. The charge retaining fibers can be charged to attract and hold particles from such sources as particulate matter from sorbents (preventing break-through), and smoke constituents while having a suitable pressure drop. The apparatus handles'the lofty media with minimal crushing, for example, by spacing apart delivery rolls equipped with protrusions to punch, push, and/or pull the lofty media ahead for high speed operation. | 12-12-2013 |
Karl K. Chang, Midlothian, VA US
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20140154444 | COMPOSITE SHEET AND CARGO CONTAINER COMPRISING SAME - This invention is directed to a non-rigid composite sheet comprising in order (i) a first component having an areal density of from 88 to 678 gsm comprising a first fabric of filamentary yarns having a tenacity of at least 11 g/dtex and a UV and weather impervious first polymeric layer. (ii) a second component having an areal density of from 30 to 237 gsm comprising a flame resistant substrate and an inorganic refractory layer and (iii) a third component having an areal density of from 88 to 678 gsm comprising a second fabric of filamentary yarns having a tenacity of at least 11 g/dtex and an impact and scratch resistant second polymeric layer, the second fabric of the third component being adjacent to the refractory layer of the second component. | 06-05-2014 |
20140217092 | COMPOSITE SHEET AND CARGO CONTAINER COMPRISING SAME - This invention is directed to a non-rigid composite sheet comprising in order a first component having an areal density of from 102 to 678 gsm comprising a first fabric of filamentary yarns having a tenacity of at least 11 g/dtex and a UV and weather impervious first polymeric layer, a second component having an areal density of from 10 to 170 gsm comprising a flame resistant inorganic refractory layer adjacent to at least one protective polymeric layers, and a third component having an areal density of from 102 to 678 gsm comprising a second fabric of filamentary yarns having a tenacity of at least 11 g/dtex and an impact and scratch resistant second polymeric layer, the second fabric of the third component being adjacent to the refractory layer of the second component. | 08-07-2014 |
Liang J Chang, Reston, VA US
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20140343914 | SYSTEMS AND METHODS FOR CREATING A MODEL OF COMPOSITION FOR A COMPOSITE FORMED BY COMBINING A PLURALITY OF HYDROCARBON STREAMS - Systems and methods for creating a model of composition for a current composite created by combining a plurality of hydrocarbon streams. The method comprises receiving at least one primary data value related to the current composite, associating the at least one primary data value with a profile of the current composite, selecting a modeling scenario for the current composite using a hierarchy of modeling scenarios, and creating a model of composition for the current composite using at least one processor, The modeling scenario is selected based at least in part on a collection of primary data values associated with the profile of the current composite. The model of composition is created based at least in part on the modeling scenario and the collection of primary data values associated with the profile of the current composite. Systems of creating the model of composition are also disclosed. | 11-20-2014 |
Matthew Y. Chang, Yorktown, VA US
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20120071925 | INTEGRATED IPD DEVICES, METHODS, AND SYSTEMS - The present invention relates generally to various integrated Inter-Spinous Process Decompression, IPD, devices and methods for implantation thereof for treating spinal stenosis. Generally, in accordance with an exemplary embodiment of the present invention, the disclosed IPD system comprises an IPD tusk-shaped needle, an IPD tusk-shaped sizer, an IPD tusk-shaped implant tool, and an IPD implant. | 03-22-2012 |
Ray-Yu Chang, Falls Church, VA US
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20150242637 | AUTOMATED VULNERABILITY INTELLIGENCE GENERATION AND APPLICATION - Techniques for providing computer security vulnerability intelligence are disclosed. The techniques include obtaining distributable vulnerability data that includes, for each of a plurality of software packages and associated vulnerabilities, threat mitigation information and a threat priority parameter, where the distributable vulnerability data was derived from an intelligence graph including a plurality of fundamental instance nodes, a plurality of document nodes, and a plurality of edges. The techniques also include identifying installed software packages on a computer system, correlating a plurality of the installed software packages with the distributable vulnerability data to obtain a plurality of installed software packages and associated vulnerabilities, ordering at least some of the plurality of installed software packages and associated vulnerabilities according to threat priority parameters, such that an ordered plurality of installed software packages and associated vulnerabilities is obtained, and providing mitigation information for the ordered plurality of installed software packages and associated vulnerabilities. | 08-27-2015 |
Wen-De T. Chang, Chantilly, VA US
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20140279136 | BANDWIDTH AUCTIONING - A method, performed by a computer device, may include obtaining bandwidth use data associated with a network device and predicting a trough period in bandwidth use for the network device based on the obtained bandwidth use data. The method may further include providing an auction associated with a time period during the predicted trough period, wherein the auction offers use of the network device during the time period at a discounted price; receiving a bid, from a customer, for use of the network device during the time period via the auction; and provisioning one or more services on the network device for the customer based on the received bid, wherein the one or more services are provided for a duration of the auctioned time period. | 09-18-2014 |
Wendi Chang, Annandale, VA US
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20150311664 | METHOD AND APPLICATIONS OF THIN-FILM MEMBRANE TRANSFER - The disclosure relates to method and apparatus for micro-contact printing of micro-electromechanical systems (“MEMS”) in a solvent-free environment. The disclosed embodiments enable forming a composite membrane over a parylene layer and transferring the composite structure to a receiving structure to form one or more microcavities covered by the composite membrane. The parylene film may have a thickness in the range of about 100 nm-2 microns; 100 nm-1 micron, 200-300 nm, 300-500 nm, 500 nm to 1 micron and 1-30 microns. Next, one or more secondary layers are formed over the parylene to create a composite membrane. The composite membrane may have a thickness of about 100 nm to 700 nm to several microns. The composite membrane's deflection in response to external forces can be measured to provide a contact-less detector. Conversely, the composite membrane may be actuated using an external bias to cause deflection commensurate with the applied bias. Applications of the disclosed embodiments include tunable lasers, microphones, microspeakers, remotely-activated contact-less pressure sensors and the like. | 10-29-2015 |
Zhengmian Chang, Blacksburg, VA US
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20150191408 | TRIPTYCENE MONOMER AND TRIPTYCENE CONTAINING POLYESTERS AND POLYURETHANES - The primary diol triptycene derivative triptycene-1,4-hydroquinone-bis(2-hydroxyethyl) ether (TD) is provided, as are methods of using the same to synthesize polyesters and polyurethanes, and polyesters and polyurethanes synthesized therewith. | 07-09-2015 |