Abstract: Systems and techniques by which a navigation system provides directional information for vehicular travel that is customized based upon real-time conditions, a safety profile associated with a vehicle driver, and the safety assessment associated with the characteristics of road segments are disclosed. In one implementation, a method for a personalized vehicular navigation assessed dynamically based on risk tolerance includes retrieving data indicative of accident history associated with at least one of the road segments, retrieving data indicative of real-time condition of the road segments, and retrieving a user profile associated with the user. The method further includes calculating risk scores, based on the accident history and the real-time conditions and weighed based on tolerance level and the driver's history, associated with a plurality of proposed routes, identifying a personalized route based on the risk scores, and transmitting the identified personalized route to a device.

Abstract: Disclosed herein are system, method, and computer program product embodiments for utilizing parallel links to improve sub-network availability and latency performance for ATC traffic. An embodiment operates by receiving a generated message. The type of the generated message is determined, where the type is an air traffic control message or a non-air traffic control message. Based on the type of message, communication links are selected, where the communication links include parallel transmission links or a serial link. The method continues by copying the generated message and transmitting the copied message using the selected communication links. The method waits to receive an acknowledgement indicating receipt of the transmitted message. Upon identifying an acknowledgement, any of the copied messages not yet retransmitted are deleted.

Abstract: Disclosed herein are systems and methods for processing an audio file to perform audio Segmentation and Speaker Role Identification (SRID) by training low level classifier and high level clustering components to separate and identify audio from different sources in an audio file by unifying audio separation and automatic speech recognition (ASR) techniques in a single system. Segmentation and SRID can include separating audio in an audio file into one or more segments, based on a determination of the identity of the speaker, category of the speaker, or source of audio in the segment. In one or more examples, the disclosed systems and methods use machine learning and artificial intelligence technology to determine the source of segments of audio using a combination of acoustic and language information. In some examples, the acoustic and language information is used to classify audio in each frame and cluster the audio into segments.

Abstract: A low profile phased array antenna that is configured to be manufactured using additive manufacturing techniques is provided. In one or more embodiments, the phased array can include a plurality of signal ears, ground ears, and clustered pillars that can be arranged in relation to a base plate such that each component of the antenna can be manufactured from a single piece of material, thereby allowing for the use of additive manufacturing techniques which can substantially reduce the cost and time of the manufacturing process. The phased array can include a signal ear that include one or more posts that interface with an airgap located within a base plate of the array, wherein the size of the airgap in relation to the size of the post is configured to achieve an optimal level of impedance matching.

Abstract: Described are methods, systems, and computer-program product embodiments for selecting a face image based on a name. In some embodiments, a method includes receiving the name. Based on the name, a name vector is selected from a plurality of name vectors in a dataset that maps a plurality of names to a plurality of corresponding name vectors in a vector space, where each name vector includes representations associated with a plurality of words associated with each name. A plurality of face vectors corresponding to a plurality of face images is received. A face vector is selected from the plurality of face vectors based on a plurality of similarity scores calculated for the plurality of corresponding face vectors, where for each name vector, a similarity score is calculated based on the name vector and each face vector. The face image is output based on the selected face vector.

Abstract: The present invention provides a Mitrecin A polypeptide useful in prevention and treatment of one or more bacteria. Also provided is a method to kill or prevent growth of one or more bacteria comprising contacting the one or more bacteria with a Mitrecin A polypeptide. The target bacteria can be selected from the group consisting of a Gram-positive bacterium, a Gram-negative bacterium, or both. In one embodiment, the present invention is drawn to a polynucleotide encoding a Mitrecin A polypeptide, a vector comprising the polynucleotide, a host cell comprising the polynucleotide, or a composition comprising the Mitrecin A polypeptide, the polynucleotide, the vector, or the host cell.

Abstract: A degenerate four-wave mixing (DFWM) squeezed light apparatus includes one or more pump beams, a probe beam, a vapor cell, a repump beam, and a detector. The one or more pump beams includes an input power of no greater than about 150 mW. The vapor cell includes an atomic vapor configured to interact with overlapped pump and probe beams to generate an amplified probe beam and a conjugate beam. The repump beam is configured to optically pump the atomic vapor to a ground state and decrease atomic decoherence of the atomic vapor. The detector is configured to measure squeezing due to quantum correlations between the amplified probe beam and the conjugate beam. The one or more pump beams, the probe beam, and the repump beam are configured to generate two-mode squeezed light by DFWM with squeezing of at least 3 dB below shot noise.

Abstract: Described are systems and methods for evaluating cyber effects in a cyber physical system (CPS). In some embodiments, a simulation model of the CPS is built and includes a plurality of component sets. The plurality of component sets includes at least one component in the simulation model. A control component is inserted into the simulation model. One or more connections between the plurality of component sets is routed through the control component. A cyber-attack on a component set selected from the plurality of component sets can be simulated by configuring the control component to control an output transmitted via a routed connection between the plurality of component sets. The model components may be iteratively replaced by CPS components, including software or physical components, to improve the cyber-attack and evaluation fidelity.

Abstract: Disclosed herein are system, method, and computer program product embodiments for creating cyber situational understanding in an operational environment. An embodiment operates by normalizing streaming cyber information for a plurality of cyberspace entities and generating cyber-graphs based on relationships between two or more of the plurality of cyberspace entities. A cyber-threat inquiry of the cyber-graphs returns potential cyber-threats that are subsequently visualized as an overlay on a corresponding operational environment.

Abstract: An apparatus that performs spoof detection of satellite signals based on clock information derived from the satellite signals. The apparatus may include a position, velocity, time (PVT) component that derives the clock information from the satellite signals and provides the clock information to a spoof detection mechanism. In some embodiments, the clock frequency estimate is modeled as a Wiener process.

Abstract: A device for transmitting and receiving acoustic waves is provided herein. In one or more examples, the device comprises: a polymer infill; a first set of piezoelectric components, wherein the first set of piezoelectric components comprises one or more piezoelectric components, disposed in a first annular area interstitially in the polymer infill, the first annular area defined by a first inner ring and a first outer ring; a second set of piezoelectric components, wherein the second set of piezoelectric components comprises one or more piezoelectric components, disposed in a second annular area interstitially in the polymer infill, the second annular area defined by a second inner ring and second outer ring; and wherein the rings are spaced apart from each other radially based on one or more Gaussian distributions.

Abstract: Provided are systems and methods directed to identifying relationships between colloquial place names in a relational database. In some embodiments, a method of identifying relationships between colloquial place names in a relational database comprises receiving geographic location information; generating a vector corresponding to the geographic location; comparing the geographic location information vector to a plurality of colloquial place name vectors in a relational database that maps a plurality of colloquial place names to a plurality of corresponding colloquial place name vectors in a vector space, to generate a plurality of similarity scores that is calculated based on the geographic location information vector and each colloquial place name vector of the plurality of colloquial place name vectors; and identifying that one or more colloquial place names in the relational database are related to the geographic location information based on the plurality of similarity scores.

Abstract: Described herein is a system and method for improving cyber resilience for determining an optimal security policy for a network. The system uses an objective function to balance cyberattack risks, accessibility to network resources, resource limitations, minimum mission availability requirements within a network environment, or a combination thereof. The objective function comprises objectives (one or more variables that enhance accessibility to network resources and reduce cyberattack risks) and constraints (one or more variables that characterize resource limitations or minimum mission availability requirements within a network environment). The optimal security policy is selected by solving one or more optimization problems. The optimization problem may be solved by determining candidate security policies that meet the constraints and selecting among candidate security policies having the highest score for a given objective function.

Abstract: Disclosed herein are system, method, and computer program product embodiments for detecting potentially unsafe wear levels in vehicle suspension systems. An embodiment operates by receiving acoustic signals of a vehicle suspension system, processing, the acoustic signals to generate training data, training a predictive learning algorithm to generate a predictive wear model and classifying the processed acoustic signals to indicate wear levels of one or more components of the vehicle suspension system. The trained predictive wear model subsequently predicts wear levels of the vehicle suspension system for notification to a cloud-based repository. Fleets of driverless vehicles may continuously monitor wear levels for timely maintenance before failure occurs.

Abstract: Systems and methods for estimating magnetic susceptibility of a patient through continuous motion in an MRI scanner are provided herein. In one or more examples, during the collection of data, the patient can be instructed to move their head or other part of the body in a continuous manner and for a fixed duration of time. During the fixed duration of time, magnitude a data from the RF signal can be received by one or more RF coils can be collected. The received and undersampled magnitude data can be converted to phase data which can then be converted to magnetic susceptibility. Thus magnetic susceptibility can be determined while allowing for continuous motion during the MRI scan, which can be more comfortable and feasible for the patient in contrast to techniques that require the patient to hold their body at a particular orientation in the scanner for a fixed duration of time.

Abstract: Methods and systems are described for assessing a computer network using a graph model. In some instances, the methods comprise: receiving data from at least one data stream of a plurality of data streams, wherein the plurality of data streams comprise computer network data provided by one or more data brokers, and wherein the data received from different data streams of the plurality comprise different data formats; converting the data received from the at least one data stream to a common data format comprising a node or an edge; updating a graph model comprising a plurality of nodes and edges stored within a graph database according to the node or edge of the converted data; and providing a user of the computer network with a visualization of a status of the computer network.

Abstract: Examples in accordance with this disclosure provide a system for detecting a spoofed signal, the spoofed signal comprising position-navigation-timing (PNT) data. The system can include a first antenna and a second antenna, both configured to receive one or more first signals from one or more navigation satellites. The first antenna and second antenna can be configured to be separated by a first distance. The system can include a first receiver coupled to the first antenna and a second receiver coupled to the second antenna, where each antenna is configured to receive one or more signals from the respective antenna. Each of the first receiver and the second receiver are configured to extract a respective carrier phase data.

Abstract: A communications system and methods for covert communications are provided. A first transmitter that transmits an information carrying signal to a target receiver, a second transmitter and a third transmitter transmit jamming signals to the target receiver, such that the information carrying signals and the jamming signals are interleaved when received by the target receiver The information carrying signals and the jamming signals can be at least partially overlapping by an eavesdropper.

Abstract: A system and method for generating communications waveforms that can operate in congested frequency spaces and in applications in which the receiver is moving with respect to the transmitter is provided. In one or more examples, each symbol to be encoded and transmitted is converted into a sequence of frequency chirps. The sequence of frequencies used by the sequence of chirps is based on the symbol that is to be encoded. Each chirp can have a center frequency, and the frequency can be swept over the duration of the chirp. In this way each chirp can have a varying frequency over the duration of the chirp, but the phase of the chirp can be continuous throughout the duration of the chirp. The bandwidth and sweep rate of the chirp can be based on the expected maximum velocity of the receiver and the transmitter relative to one another.

Abstract: Method, systems, and techniques for determining the age of an underground space are provided. In some embodiments, determining the age of an underground space comprises taking soil samples from a plurality of surface locations within a second underground space, analyzing the soil samples from the plurality of surface locations to determine an amount of a chemical compound for each soil sample, and determining an age of the second underground space using one or more relationships based on amounts of the chemical compound measured in a plurality of soil samples taken over a period of time in a first underground space and a baseline amount of the chemical compound at one or more locations remote from both the first underground space and the second underground space.