Abstract: A system and method for X-ray computed tomography includes a robotic arm that moves an X-ray emitter around a subject in a curvilinear path and an X-ray detector that captures 2-dimensional views while the subject is scanned. Movements of the emitter and detector are coordinated such that the position and angle of the emitter relative to the detector remains substantially constant during scanning. A processor uses computed tomography to reconstruct an image of the subject from the captured 2-dimensional views. The robotic arm varies the pitch of the X-ray emitter during the scan to enhance the spatial resolution of the reconstructed image. The processor generates a projection transformation matrix based on movement of the robotic arm for each captured 2-dimensional view that is applied during reconstruction.

Abstract: The subject matter of this specification can be implemented in, among other things, a method that includes determining, by a first computing device, a set of remote applications hosted by a second computing device including file type associations for each remote application. The first computing device determines a set of local applications and their file type associations. The each file type associated with a remote application, the first computing device determines whether the file type is also associated with a local application. Responsive to determining that the file type is associated with both a remote and local application, the first computing device configures a proxy component with parameters specifying the remote application and the local application. The proxy component is configured to determine whether to open a requested file of the file type with the remote application or the local application based upon the current client/server environment.

Abstract: A system and method of anti-malware analysis including iterative techniques. These techniques are used to create a file attribute tree used by a machine learning analyzer to identify malicious files.

Abstract: A dynamic photodiode may comprise a substrate comprising a first surface opposite a second surface, the substrate being of a first doping type; a substrate region disposed on the first surface, the substrate region comprising a substrate contact configured to be grounded; a first doped region disposed on the first surface, the first doped region being of the first doping type and comprising a first contact configured to receive a first voltage; a second doped region disposed on the first surface, the second doped region being of a second doping type opposite to the first doping type and comprising a second contact configured to receive a second voltage. The substrate region may surround the second doped region, the second doped region may surround the first doped region, and exposed portions of the substrate form light absorbing regions may be configured to generate electron-hole pairs in the substrate.

Abstract: A dynamic photodiode detector or detector array having a light absorbing region of doped semiconductor material for absorbing photons. Electrons or holes generated by photon absorption are detected with a construction of oppositely heavily doped anode and cathode regions and a heavily doped ground region of the same doping type as the anode region. Photon detection involves switching the device from reverse bias to forward bias to create a depletion region enclosing the anode region. When a photon is then absorbed the electron or hole thereby generated drifts under the electric field induced by the biasing to the depletion region where it causes the anode-to-ground current to increase. Furthermore, the detector is configured such that anode-to-cathode current starts to flow once a threshold number of electrons or holes reaches the depletion region, where the threshold may be one to provide single photon detection.

Abstract: Disclosed herein are systems and method for anti-malware scanning, including identifying a plurality of objects in a backup archive that is connected to a first network comprising a plurality of computing devices; scanning the plurality of objects in the backup archive to generate a whitelist indicating a subset of the plurality of objects that do not need to be scanned at a subsequent time; performing, using the whitelist, a first malware scan in a computing device of the plurality of computing devices; detecting that the computing device has left the first network to join a second network; and performing a second malware scan on the computing device, wherein the second malware scan uses a different whitelist of the second network, and wherein the second malware scan comprises scanning a first object that is not in the different whitelist and was not scanned in the first malware scan.

Abstract: Systems and methods for creating virtual machine snapshots. An example method comprises: receiving a request to create a snapshot of a virtual machine running on a host computer system; protecting from modification a plurality of virtual memory pages of the virtual machine; responsive to detecting an attempt to modify a virtual memory page of the plurality of memory pages, copying the virtual memory page to a queue residing in a random access memory (RAM) of the host computer system; making the virtual memory page writable; retrieving the virtual memory page from the queue; writing the virtual memory page to a disk of the host computer system; and responsive to exhausting the queue, completing creation of the snapshot of the virtual machine.

Abstract: A plurality of directional antennas are arranged between an inner barrier (e.g., ring, wall, fence, glass, etc encircling a field, court, rink, stage, etc) and an outer barrier (e.g., guardrail, wall, etc encircling a seating region, etc) of the venue. Each directional antenna produces a beam pattern that is oriented such that the beam pattern is directed at an angle off-normal from the inner or outer barrier. Further, at least some of the directional antennas are placed at the openings of pedestrian tunnels leading into the seating region of the venue, near the inner barrier of the venue seating region, or placed near a midpoint between the inner and outer barriers so as to provide wireless communication services to users in the seating region of the venue.

Abstract: A method of identifying and locating tissue abnormalities in a biological tissue includes irradiating an electromagnetic signal, via a probe defining a transmitting probe, in the vicinity of a biological tissue. The irradiated electromagnetic signal is received at a probe, defining a receiving probe, after the signal is scattered/reflected by the biological tissue. Blood flow information pertaining to the biological tissue is provided. Based on the received irradiated electromagnetic signal and the blood flow information, tissue properties of the biological tissue are reconstructed. A tracking unit determines the position of at least one of the transmitting probe and the receiving probe while the step of receiving is being carried out, the at least one probe defining a tracked probe. The reconstructed tissue properties are correlated with the determined probe position so that tissue abnormalities can be identified and spatially located.

Abstract: This application proposes multi-beam antenna systems using spherical lens with high isolation between antenna ports and compatible to 2×2, 4×4, 8×8 MIMO transceivers. Several compact multi-band multi-beam solutions (with wideband operation, 40%+, in each band) are achieved by creating dual-band radiators movable on the track around spherical lens and by placing of lower band radiators between spherical lenses. By using of secondary lens for high band radiators, coupling between low band and high band radiators is reduced. Beam tilt range and side lobe suppression are improved by special selection of phase shift and rotational angle of radiators. Resultantly, a wide beam tilt range (0-40 degree) is realized in proposed multi-beam antenna systems. Each beam can be individually tilted. Based on proposed single- and multi-lens antenna solutions, cell coverage improvements and stadium tribune coverage optimization are also achieved, together with interference reduction.

Abstract: A method for tomographic imaging a dielectric object includes irradiating an object with electromagnetic radiation during a first time interval, receiving electromagnetic radiation passed through dielectric object to generate a first dataset at a plurality of spatial locations, irradiating the object with electromagnetic radiation during a second time interval, receiving electromagnetic radiation passed through dielectric object to generate a second dataset at a plurality of spatial locations, generating a third dataset, wherein the third dataset is determined as a function of the first dataset, the second dataset, and a normalized difference between the first dataset and the second dataset, and reconstructing a dielectric image of the object based on the third dataset.

Abstract: A system and method is provided for managing virtualized computing resources. An exemplary method includes executing a computing service comprised of virtualized computing resources including a first virtual machine and a network address mapping module. The method further includes, responsive to receiving an indication that additional virtualized computing resources are needed to handle one or more requests from a client and directed to the computing service, generating a second virtual machine that can handle requests for the computing service by performing a linked cloning operation of the first virtual machine. The method includes, configuring the network address mapping module to modify requests for the second virtual machine, such that the second virtual machine has the same network address as the first virtual machine.

Abstract: A lensed antenna system is provided. The lensed antenna system include a first column of radiating elements having a first longitudinal axis and a first azimuth single, and, optionally, a second column of radiating elements having a second longitudinal axis and a second azimuth angle, and a radio frequency lens. The radio frequency lens has a third longitudinal axis. The radio frequency lens is disposed such that the longitudinal axes of the first and second columns of radiating elements are aligned with the longitudinal axis of the radio frequency lens, and such that the azimuth angels of the beams produced by the columns of radiating elements are directed at the radio frequency lens. The multiple beam antenna system further includes a radome housing the columns of radiating elements and the radio frequency lens. There may be more or fewer than two columns of radiating elements.

Abstract: The IOC Infrastructure management system (100) and method is disclosed for building an IOC infrastructure and its management thereof. The system mainly includes a IOC processing unit and an endpoint engine. The IOC processing unit is configured to i) source raw IOCs from a plurality of external sources, ii) convert format of the raw IOCs into a predetermined format of an IOC database using a parser unit, where each parser of the parser unit corresponds to at least one IOC format, iii) build and apply syntax tree to the parsed IOCs, where the syntax tree supports complex expression-based toolsets, such as YARA, and sort the IOCs lexicographically to avoid duplication of IOC entry and render the malware detection scanning process faster and efficient.

Abstract: A data storage system uses erasure coding in combination with hashgraph to organize stored data and recover that data in a computing environment.

Abstract: Disclosed herein are systems and method for selectively restoring a computer system to an operational state. In an exemplary aspect, the method may include creating a backup image of the computer system comprising a set of data blocks, detecting that the computer system has begun an initial startup, identifying a subset of the data blocks read from a disk of the computer system during the initial startup. In response to determining that the computer system should be restored, the method may include restoring the subset of the data blocks such that the computer system is operational during startup, and restoring a remaining set of the data blocks from the backup image after the startup of the computer system.

Abstract: Datacenters or other large-scale distributed computing systems can provide computing resources such as processing power and data storage as computing services accessible to tenants via a computer network. A tenant, such as a corporation, school, or organization, can have multiple users or groups of users with corresponding websites. To facilitate ready access, data relevant to a user, group, or website of a tenant can be stored in a dedicated network location sometimes referred to as a shard. A shard can be a physical and/or logical storage location that contains emails, chats, instant messages, documents, photos, videos, or other types of content items with which the user, group, or website can interact.

Abstract: Techniques for enabling system redundancy for group-based communication platforms are discussed herein. In some examples, a user may post a message to a virtual space of a communication platform. The communication platform may transmit the message to virtual space servers which manage the virtual space within which the message originated. In such examples, a virtual space may be associated with a plurality of geographically distributed virtual space servers. Based on the virtual space servers receiving the message, the virtual space servers may send the message to one or more gateway servers that are subscribed to the virtual space servers. Gateway servers may be connected to client devices associated with user profiles. Upon receiving the message from the virtual space servers, the gateways servers may send the message to the recipient client devices. The recipient client devices may display the message via a user interface of the communication platform.

Abstract: The present disclosure relates to a system and method for creating a backup and restoring the exact clean system state prior to malware detection. The system includes a security system, in communication with one or more applications of a computing system, and a backup unit. The security system detects malware during execution of the applications or events based on a memory dump analysis. The backup unit creates a backup copy of the system state corresponding to each event, labels each copy and creates an index. When the security system detects presence of the malware at a particular event, the backup system parses the index, and with use of the labels, retrieves the exact backup copy that belongs to the event preceding the other event that caused the malware attack.

Abstract: The invention relates to data recovery technology. Each created backup is checked for the integrity of the placed files, while calculating the checksums of each block of data that can be restored from the backup. The computer system is restored from a backup copy by connecting it using the archive copy connection driver, which creates a virtual disk that is readable by standard means of the operating system of the computer system being restored. The booting of the operating system is performed from the virtual disk and, after restoring the functioning of the computer system, the system volume that has been damaged is restored from the backup copy to the local storage medium.