Abstract: A system is provided for determining vulnerability metrics for graph-based configuration security. During operation, the system generates a multi-layer graph for a system with a plurality of interconnected components. The system determines, based on the multi-layer subgraph, a model for a multi-step attack on the system by: calculating, based on a first set of variables and a first set of tunable parameters, a likelihood of exploiting a vulnerability in the system; and calculating, based on a second set of variables and a second set of tunable parameters, an exposure factor indicating an impact of exploiting a vulnerability on the utility of an associated component. The system determines, based on the model, a set of attack paths that can be used in the multi-step attack and recommends a configuration change in the system, thereby facilitating optimization of system security to mitigate attacks on the system while preserving system functionality.

Abstract: A three-dimensional object model is divided into slices that are targeted for an additive manufacturing process operable to deposit material at a variable deposition size ranging between minimum and maximum printable feature sizes. For each of the slices, a thinning algorithm is applied to contours of the slice to form a meso-skeleton. Topological features of the thinned slice are reduced over a number of passes such that a portion of the meso-skeleton is reduced to a single pixel wide line. Based on the number of passes, a slice-specific printable feature size within the range of the minimum and maximum printable feature sizes is determined. An adjusted slice is formed by sweeping the meso-skeleton with the slice-specific printable feature size. The adjusted slices are assembled into an object model which is used to create a manufactured object.

Abstract: One embodiment provides a method and a system for diagnosing a digital circuit. During operation, the system can obtain a design of the digital circuit, generate a design of a diagnostic circuit by augmenting the design of the digital circuit based on a number of fault-emulating subcircuits, and convert the design of the diagnostic circuit to a design of a quantum oracle circuit. The system can further construct a quantum diagnostic circuit based on the design of the quantum oracle circuit and observe states of the quantum diagnostic circuit to determine probability distributions of one or more faults in the digital circuit.

Abstract: A valve configured to control flow of a material therethrough includes a body having a bore formed axially therethrough. The valve also includes a cooler positioned at least partially around or within the body. The cooler is configured to cool the material to below a melting point of the material to form a solid plug within the body to prevent the material from flowing therethrough. The valve also includes a heater positioned at least partially around or within the body. The heater is configured to re-heat the material to above the melting point of the material to allow the material to flow therethrough.

Abstract: A color changing expiration indicator includes a reactive layer and a first barrier layer that covers at least a portion of the reactive layer. The color changing expiration indicator also includes a transmission layer that covers at least a portion of the first barrier layer, and a second barrier layer that covers at least a portion of the transmission layer. The color changing expiration indicator further includes a reactant layer that covers at least a portion of the second barrier layer. The reactant layer changes color responsive to a reaction that occurs between the reactant layer and the reactive layer.

Abstract: A method is disclosed for designing a nozzle for jetting printing material in a printing system including selecting a surface tension and viscosity of a printing material at a jetting temperature, selecting a drop volume of the printing material, and constructing a constricted axisymmetric dissipative section of the nozzle, which may include defining a length of the constricted axisymmetric dissipative section and defining a cross-sectional area of the constricted axisymmetric dissipative section.

Abstract: System and method that to shape micro-object density distribution (how densely the micro-objects are assembled in particular spatial regions) are provided. A high speed camera tracks existing object density distribution. An array of photo-transistor-controlled electrodes is used to generate a dynamic potential energy landscape for manipulating objects with both DEP and EP forces, and a video projector is used actuate the array. One or more computing devices are used to: process images captured by the camera to estimate existing density distribution of objects; receive a desired density distribution of micro-objects; define a model describing a variation of micro-object density over time due to capacitance-based interactions; generate a sequence of electrode potential that when generated would minimize error between the existing density distribution and a desired density distribution; and use the sequences of electrode potentials to actuate the electrodes.

Abstract: A method of printing a three-dimensional object. The method includes: supplying a print material to a plurality of ejector conduits arranged in an array, the ejector conduits comprising first ends configured to accept the print material and second ends comprising ejector nozzles; advancing the print material in one or more of the ejector conduits of the array until the print material is disposed in the ejector nozzle of the one or more ejector conduits; heating the print material positioned in at least one of the ejector nozzles using radiant energy, the heating causing at least a portion of the print material to be ejected from the at least one of the ejector nozzles and onto a print substrate; and repeating both the advancing the print material and the heating the print material to form a three-dimensional object on the print substrate.

Abstract: A method for producing metal or metal alloy particles may include: mixing a mixture comprising: (a) a metal or a metal alloy, (b) a carrier fluid, and optionally (c) an emulsion stabilizer at a temperature at or greater than a melting point of the metal or the metal alloy to create a dispersion of molten droplets of the metal or the metal alloy dispersed in the carrier fluid; cooling the mixture to below the melting point of the metal or the metal alloy to form metal or metal alloy particles; and separating the metal or metal alloy particles from the carrier fluid, wherein the metal or metal alloy particles comprise the metal or the metal alloy and the emulsion stabilizer, if included.

Abstract: Methods and systems obtain, using a computer, a space layout having areas. The areas maintain display structures, and the display structures are adapted to maintain display items. Such methods and systems obtain, using the computer, item data related to the display items. The item data is formatted to be printed on item signs that are adapted to be attached to the display structures in locations corresponding to the display items. Each of the item signs is different from the other item signs and each of the item signs is specific to the corresponding display items. These methods and systems: determine, using the computer, for each of the areas, an area-specific number of item signs to be printed based on the display items in each of the areas; obtain, using the computer, bundle rules; and organize, using the computer, the item signs into sign bundles according to the bundle rules.

Abstract: A printed structure, and systems and methods for creating the printed structure are disclosed. The printed structure includes a substrate, a first printed image layer, and a second printed image layer printed at least partially over the first printed image layer. The first printed image layer includes a first variable image printed using a first electrophoretic ink and the second printed image layer includes a second variable image printed using a second electrophoretic ink. The first variable image and the second variable image are configured to selectively change their display states upon application of an electric field.

Abstract: A classification-based diagnosis for detecting and predicting faults in physical system (e.g. an electronic circuit or rail switch) is disclosed. Some embodiments make use of partial system model information (e.g., system topology, components behavior) to simplify the classifier complexity (e.g., reduce the number of parameters). Some embodiments of the method use a Bayesian approach to derive a classifier structure.

Abstract: Ink-based digital printing systems useful for ink printing include a rotatable charge-retentive reimageable surface layer configured to receive a layer of fountain solution. The fountain solution is carried to the charge retentive surface by a fog or mist including fountain solution aerosol particles, dispersed gas particles, and charge directors that impart charge to the fountain solution aerosol particles. The charge-retentive reimageable surface may be charged to a uniform potential, and selectively discharged using an ROS according to image data to form an electrostatic latent image. The charged fountain solution adheres to portions of the charge-retentive reimageable surface according to the electrostatic latent image to form a fountain solution image thereon. The fountain solution image can be partially transferred to an imaging blanket, where the fountain solution image is inked. The resulting ink image may be transferred to a print substrate.

Abstract: A method of operating a printer evaluates the effect of printing a print job with two different orientations of the image content data for the print job. The orientation that produces the least increase in the cross-process direction displacement error for the inkjets in the printer is selected for printing the print job. By attenuating the increase in cross-process direction displacement error, the interval between printhead maintenance operations is increased.

Abstract: The present specification relates to image capture. More specifically, it relates to selective image capture for sensor carrying devices or floats deployed, for example, on the open sea. In one form, data is generated on the sensor carrying devices or floats by an on-board Inertial Measurement Unit (IMU) and is used to automatically predict the wave motion of the sea. These predictions are then used to determine an acceptable set of motion parameters that are used to trigger the on-board camera(s). The camera(s) then capture images. One consideration is that images captured at or near the peak of a wave crest with minimal pitch and roll will contain fewer obstructions (such as other waves). Such images provide a view further into the horizon to, for example, monitor maritime sea traffic and other phenomenon. Therefore, the likelihood of capturing interesting objects such as ships, boats, garbage, birds, . . . etc. is increased.

Abstract: A redox-active compound is disclosed that is the reaction product of an electron-withdrawing monomer, a cross-linker, and a redox-active moiety. The cross-linker may be connected to the redox-active moiety through the electron-withdrawing functional group. The redox-active compound has a reduced form and an oxidized form and neither the reduced form nor the oxidized form is decomposed by oxygen. The redox-active compound may be used to create a pH gradient in a fluid stream. A redox-active composition may include the redox-active compound, a binder, and a current collector. The redox-active composition may be part of a membraneless electrochemical cell.

Abstract: A system is provided which obtains images of a physical object captured by an AR recording device in a 3D scene. The system measures a level of diversity of the obtained images, for a respective image, based on at least: a distance and angle; a lighting condition; and a percentage of occlusion. The system generates, based on the level of diversity, a first visualization of additional images to be captured by projecting, on a display of the recording device, first instructions for capturing the additional images using the AR recording device. The system trains a model based on the collected data. The system performs an error analysis on the collected data to estimate an error rate for each image of the collected data. The system generates, based on the error analysis, a second visualization of further images to be captured. The model is further trained based on the collected data.

Abstract: A method includes forming or positioning a layer within a nozzle of a 3D printer. The layer is configured to decrease a settling time of a meniscus of a printing material after a drop of the printing material is ejected from the nozzle.

Abstract: A nozzle for a 3D printer includes a structure and a layer positioned at least partially within the structure. The layer is configured to decrease a settling time of a meniscus of a printing material after a drop of the printing material is ejected from the nozzle.

Abstract: The present disclosure discloses methods and systems for managing multiple priority jobs at a multi-function device. The method includes receiving a first job at the multi-function device, wherein the first job is to be completed within a pre-defined time. Then, a second job is received at the multi-function device. Upon receiving the second job, a pre-defined algorithm is run to determine an execution order for the first job and the second job. Based on the pre-defined algorithm, either continue executing the first job or start executing the second job. This way, multiple jobs are managed at the multi-function device.