Abstract: A means and system is designed to distinguish human users from bots (automated programs to generate posts or interactions) in social media (including microblogging services and social networking services) by assigning a likelihood score to each user for being a human or a bot. The bot score assigned to each user is computed from statistical, temporal and text features that are detected in user's social media interactions (relative indicators specific to a given social media data set) and user's historical profile information.

Abstract: Computationally efficient, highly accurate, and cost-effective approach for detection of damage in a structure is described. Methods include a combined analysis in both global and local regions of a structure to predict the received wave signals at a location due to scattering of Lamb waves at a damage site. Through comparison of an actual received wave signal with the predicted signals, identification of damage location and/or type can be provided. Methods can be particularly beneficial when considering damage assessment in a complex structure that includes plate-like structures that include an extension off of a base plate, e.g., a stiffened structure.

Abstract: System and means generates synthetic forms of social media data such as data from microblogging services (e.g., Twitter) and social networking services (e.g., Facebook). This system and means jointly generate interaction graph structures and text features similar to input social media data. First, an interaction graph is generated by mapping social network interactions in input (real) social media data to graph structures. This interaction graph is fitted to a social network model (or a composite model) by minimizing the distance between the input and the synthetic interaction graphs (of potentially different sizes). The distance is measured statistically or based on the performance of social media analytics. Various patterns (such as anomalies), interaction types and temporal dynamics are generated synthetically. Second, text features are extracted from input social media data with topic modeling and statistical analysis of word tuple distributions.

Abstract: Computationally efficient, highly accurate, and cost-effective approach for detection of damage in a structure is described. Methods include a combined analysis in both global and local regions of a structure to predict the received wave signals at a location due to scattering of Lamb waves at a damage site. Through comparison of an actual received wave signal with the predicted signals, identification of damage location and/or type can be provided. Methods can be particularly beneficial when considering damage assessment in a complex structure that includes plate-like structures that include an extension off of a base plate, e.g., a stiffened structure.

Abstract: A security control system is provided that works as an extra layer of defense as a way to prevent an “attack” that is initiated by modifying either the “jump” or the “return” addresses or both. The principal behind the security control system is to “monitor” the addresses to which the processors would jump, interrupt or return, and identify when these addresses are modified in a manner that does not comply with the normal execution of the processor. In order to do that the security control system uses existing structures in multi-core processors and even anticipates the creation of additional structures to expedite and improve such control.

Abstract: A parachute data recorder system is provided that includes a housing, the housing having a seal for resistance to moisture and environmental impact; a plurality of sensors mounted in the housing, including an accelerometer, an altimeter, a gyrometer, and a GPS; a microprocessor mounted in the housing for recording and processing data from the sensors; a wireless connection unit mounted in the housing for transmitting data in the microprocessor; and an electronic connection port. The parachute data recorder system may further include a second accelerometer, one of the accelerometers being a low-g accelerometer and the other being a high-g accelerometer. The initiation of recording can be started by stress or strain inducement from parachute deployment.

Abstract: A device for detecting wireless signals and locating the place of origin in a building is provided that includes a transmitter system using a cellular protocol; a plurality of antennae that receive wireless Radio Frequency (RF) signals, each antenna having a port; a receiving system connected to the antennae ports with a plurality of cables, converting the RF signal to voltage waveform; a processing system in communication with the receiving system, detecting the strength of the received signals and Time Difference of Arrival of the RF signals with respect to antennae and determining the location where the wireless signals are being emitted by using classification algorithms; and a human machine interface.

Abstract: A hydration and composition measurement device and technique that in one embodiment includes a microcontroller; a phase lock loop frequency synthesizer controlled by the microcontroller to generate radio frequencies; a cavity for use in resonating at a set of frequencies; a radio frequency power detector for measuring perturbed cavity resonance; and an analyzer. The hydration and composition measurement device may further include a circulator, which receives frequencies from the phase lock loop frequency synthesizer, and an antenna connected to the circulator and cavity. The cavity may be defined by a metallic material or members, and the cavity includes a hole configured to provide access of tissue to be tested to the cavity.

Abstract: A method of generating graphical models for providing security analysis in computer networks that in one embodiment includes the steps of generating a type abstract graph independent of particular networks that models abstract dependency relationships among attributes and exploits; generating network-specific attack graphs by combining the type abstract graph with specific network information; monitoring an intruder alert; and generating a real-time attack graph by correlating the intruder alert with the network-specific attack graph. The real-time attack graph can be generated using reachability checking, bridging, and exploit prediction based on consequence alerts and may further include the step of calculating the likelihood of queries using a Bayesian network model. The method may also include the steps of inferring unobserved attacks that may have been missed by intrusion detection sensors, and projecting on which hosts and using what exploits additional intruder attacks may occur.

Abstract: A security system for detecting physical intrusion in a monitored area including a plurality of radio units arranged in a network around the monitored area to determine received signal strength and pass variations thereof through the radio units to a base station.

Abstract: An automatic target tracking system and method employ an image capturing system for acquiring a series of images in real time of a distant area containing a remote target, and a processing system for processing the acquired images to identify the target and follow its position across the series of images. An automatic beam steering and method operate in conjunction with a laser source for emitting a laser beam to be transmitted in the form of a transmitted laser beam extending along a steerable beam transmission axis to the remote target. The beam steering system is controlled by the processing system to steer the beam transmission axis to be aimed at the target being tracked by the target tracking system, so that the transmitted laser beam will be transmitted at the appropriate angle and in the appropriate direction to be aimed at the tracked target.

Abstract: A security system for detecting physical intrusion in a monitored area including a plurality of radio units arranged in a network around the monitored area to determine received signal strength and pass variations thereof through the radio units to a base station.

Abstract: A security system for detecting physical intrusion in a monitored area including a plurality of radio units arranged in a network around the monitored area to determine received signal strength and pass variations thereof through the radio units to a base station.

Abstract: A hydration and composition measurement device and technique that in one embodiment includes a microcontroller; a phase lock loop frequency synthesizer controlled by the microcontroller to generate radio frequencies; a cavity for use in resonating at a set of frequencies; a radio frequency power detector for measuring perturbed cavity resonance; and an analyzer. The hydration and composition measurement device may further include a circulator, which receives frequencies from the phase lock loop frequency synthesizer, and an antenna connected to the circulator and cavity. The cavity may be defined by a metallic material or members, and the cavity includes a hole configured to provide access of tissue to be tested to the cavity.

Abstract: Method and system for non-destructive evaluation for a conducting structure by measuring the electrical impulse response thereof including applying a PRBS test input signal to the conducting structure, detecting an output signal from the conducting structure and processing the data to assess the condition of the conducting structure via changes in the electrical impulse response and to locate any defects along the conducting structure.

Abstract: A system and method of using a standard ADS-B transmitter and encoder to identify targets to provide a collision avoidance system, wherein the method includes the steps of providing a standard ADS-B transmitter and encoder, a phase modulator including a digital synthesizer, radio-frequency electronics, antennas, and a radar transceiver; synthesizing digital-based band signals from the ADS-B transmitter with additional random phase modulation using the digital synthesizer; using the antennas to both transmit and receive signals; and estimating angles-of-arrival for every target in a field-of-view. The method may include the steps of demodulating the signals received by the antennas, providing a digital signal processor, and performing matched filtering on received signals. The method may also include the step of estimating a target range of identified targets using the digital signal processor.

Abstract: A system and method of using a standard ADS-B transmitter and encoder to identify targets to provide a collision avoidance system, wherein the method includes the steps of providing a standard ADS-B transmitter and encoder, a phase modulator including a digital synthesizer, radio-frequency electronics, antennas, and a radar transceiver; synthesizing digital-based band signals from the ADS-B transmitter with additional random phase modulation using the digital synthesizer; using the antennas to both transmit and receive signals; and estimating angles-of-arrival for every target in a field-of-view. The method may include the steps of demodulating the signals received by the antennas, providing a digital signal processor, and performing matched filtering on received signals. The method may also include the step of estimating a target range of identified targets using the digital signal processor.

Abstract: An automated system for tool mark analysis includes an acquisition mechanism for acquiring 3D data of tool marks left on the surfaces of specimens by tools, a signature generation module for generating tool mark signatures from the acquired data, an analysis unit for comparing pairs of the tool mark signatures to obtain a numerical similarity value reflective of their similarity, and a database in which the similarity values are stored. An automated method for tool mark analysis involves the steps of acquiring the 3D data of tool marks, generating the tool mark signature, statistically evaluating pairs of the tool mark signatures, and providing a numerical similarity value for each pair of tool mark signatures reflecting the degree of similarity between the tool mark signatures of each pair. The method is carried out with automated assistance of a computer.

Abstract: An automated, computer-based reading tutoring system is accessed via a computer system and includes a plurality of instructional passages of different, predetermined levels of reading difficulty. A semantic space module of the reading tutoring system operates on a semantic space, which is produced by a machine-learning method, to automatically evaluate a student-submitted summary of a selected instructional passage for congruence with the selected instructional passage and to automatically determine which instructional passage the student should optimally read next. The reading tutoring system includes immediate feedback data provided to the student and including an indicator reflective of the student's reading comprehension and the identity of the instructional passage that the student should read next.

Abstract: A computerized system and methods of ballistic analysis involves comparing land impressions on a plurality of control bullets and computing correlation coefficients corresponding to the land-to-land comparisons in all possible relative orientations. A set of matching coefficients is identified for each bullet pair, and the set of matching coefficients is statistically compared to a set of non-matching coefficients. The gun is concluded to be identifiable where the sets of matching coefficients and non-matching coefficients are not statistically undistinguishable. To evaluate whether an evidence bullet was fired by a suspect gun, land impressions on an evidence bullet are compared with land impressions on a plurality of control bullets in all possible relative orientations, and correlation coefficients are computed for each land-to-land comparison to identify a set of questioned coefficients.