Abstract: A method, system, and apparatus for troubleshooting one or more multimedia devices of an audio system have been disclosed herein. An audio loopback device transmits a test signal to a first multimedia device. The first multimedia device, after receiving the test signal, generates a response signal. The audio loopback device triggers a priority controller based on an unsuccessful detection of the response signal. The priority controller troubleshoots a communicative coupling by at least changing a mode of operation of at least one of a first multimedia device or a second multimedia device from a first mode of operation to a second mode of operation. The first mode of operation or the second mode of operation may be utilized by the first multimedia device to establish the communicative coupling with the second multimedia device for delivering an audio signal of the second multimedia device on an audio device.

Abstract: The performance of a computer system having a virtual machine executing an idling instruction therein is improved by: determining a state for controlling the execution of the idling instruction for a first virtual CPU; when the controlling state is a first state, executing the idling instruction natively in a physical CPU assigned to the first virtual CPU and resuming execution of instructions by the first virtual CPU when the physical CPU wakes up; and when the controlling state is a second state, emulating execution of the idling instruction, the emulated execution including the steps of configuring a wakeup event, descheduling the first virtual CPU, and selecting a second virtual CPU to resume execution of instructions, and in response to the wakeup event, rescheduling the second virtual CPU, performing a task switch from the first to the second virtual CPU, and resuming execution of instructions by the second virtual CPU.

Abstract: A cathode is provided for electrolysis of water wherein the cathode material comprises a multi-principal element, transition metal dichalcogenide material that has four or more chemical elements and that is a single phase, solid solution. The pristine cathode material does not contain platinum as a principal (major) component. However, a cathode comprising a transition metal dichalcogenide having platinum (Pt) nanosized islands or precipitates disposed thereon is also provided.

Abstract: Disclosed herein are methods for detecting virulent Shiga toxin-producing E. coli (STEC) strains O26, O103, O121, and O111 in a biological sample comprising the steps of: (i) enriching the bacterial concentration of the biological sample to result in an enriched sample; (ii) isolating DNA from said enriched biological sample; and (iii) detecting virulent strain in said isolated DNA sample via real-time PCR and a melt curve assay. Also disclosed are primers for said assay, as well as kits comprising said primers.

Abstract: Techniques for executing operations associated with sub-sets of queries in a set of nested queries are disclosed. A graphical user interface displays individual sub-queries as separate visual representations. Based on detecting a selection, a system executes a selected query in the set of nested queries, without executing parent queries in the set of nested queries. Based on detecting another selection, the system exports a selected query without exporting parent queries of the selected query. The system copies the metadata describing the selected query and transfers the metadata to another set of nested queries. Based on detecting another selection, the system displays a results count for a selected query. The system displays a number representing the number of results returned by the selected query, without displaying the query results.

Abstract: Techniques for executing operations associated with sub-sets of queries in a set of nested queries are disclosed. A graphical user interface displays individual sub-queries as separate visual representations. Based on detecting a selection, a system executes a selected query in the set of nested queries, without executing parent queries in the set of nested queries. Based on detecting another selection, the system exports a selected query without exporting parent queries of the selected query. The system copies the metadata describing the selected query and transfers the metadata to another set of nested queries. Based on detecting another selection, the system displays a results count for a selected query. The system displays a number representing the number of results returned by the selected query, without displaying the query results.

Abstract: Silicon test structures are described that enable separate measurement of n-channel metal-oxide semiconductor (NMOS) and p-channel metal-oxide semiconductor (PMOS) transistor delays. NMOS and PMOS specific non-inverting stages may be used to construct a multi-stage ring oscillator. Each of the non-inverting stages generates either a rising or falling primary transition that is determined by either NMOS or PMOS transistors, respectively. The opposing transition for a particular non-inverting stage is triggered by propagation of the primary transition to a subsequent non-inverting stage (producing a “reset” pulse). A frequency of the ring oscillator is determined by the primary transition and one transistor type (NMOS or PMOS). Specifically, the frequency is determined by the propagation delay of the primary transition through the entire ring oscillator.

Abstract: A cathode is provided for electrolysis of water wherein the cathode material comprises a multi-principal element, transition metal dichalcogenide material that has four or more chemical elements and that is a single phase, solid solution. The pristine cathode material does not contain platinum as a principal (major) component. However, a cathode comprising a transition metal dichalcogenide having platinum (Pt) nanosized islands or precipitates disposed thereon is also provided.

Abstract: Techniques for modifying queries in a set of nested queries are disclosed. A graphical user interface displays a query detail region alongside a nested query display region. The graphical user interface includes functionality to provide for modification of queries in the nested set of queries. Based on a selection by a user, a query modification tool promotes a query attribute from a child query to one or more parent queries. Based on another selection by a user associated with one query in the set of nested queries, the system deletes an attribute from each query in the set of nested queries. Responsive to a selection to create multiple conditions for a query rule, the system modifies the functionality of the user interface to enable entry of multiple condition characteristics. Based on a further selection, the system creates the multiple conditions for the query rule.

Abstract: Technologies related to predicting whether a requested change (deployment) in a cloud computing environment will fail are described herein. An exposomic feature value is computed based upon a time series of risk values, where the risk values represent risk of failure over several historic time intervals. A probabilistic model computes a likelihood that the requested deployment will fail during implementation of the requested deployment based upon the exposomic feature value and a contextual feature value, and a notification is transmitted to a computing device of a change manager to allow the change manager to take remedial action.

Abstract: Techniques for modifying queries in a set of nested queries are disclosed. A graphical user interface displays a query detail region alongside a nested query display region. The graphical user interface includes functionality to provide for modification of queries in the nested set of queries. Based on a selection by a user, a query modification tool promotes a query attribute from a child query to one or more parent queries. Based on another selection by a user associated with one query in the set of nested queries, the system deletes an attribute from each query in the set of nested queries. Responsive to a selection to create multiple conditions for a query rule, the system modifies the functionality of the user interface to enable entry of multiple condition characteristics. Based on a further selection, the system creates the multiple conditions for the query rule.

Abstract: A chart is displayed without rendering entirely obscured markers. Successive nested pixel maps of a chart of pixels are traversed. Each of the nested pixel maps has fewer data elements than a corresponding next one of the nested pixel maps. Obscurity states of markers of the chart are determined. The obscurity states include an entirely obscured state, an entirely visible state, and a partially visible state. Each of the markers for a particular nested pixel map is associated with a separate pixel for the particular nested pixel map. One or more of the markers associated with the entirely visible state and one or more of the markers associated with the partially visible state are rendered without rendering markers associated with the entirely obscured state.

Abstract: Techniques for modifying queries in a set of nested queries are disclosed. A graphical user interface displays a query detail region alongside a nested query display region. The graphical user interface includes functionality to provide for modification of queries in the nested set of queries. Based on a selection by a user, a query modification tool promotes a query attribute from a child query to one or more parent queries. Based on another selection by a user associated with one query in the set of nested queries, the system deletes an attribute from each query in the set of nested queries. Responsive to a selection to create multiple conditions for a query rule, the system modifies the functionality of the user interface to enable entry of multiple condition characteristics. Based on a further selection, the system creates the multiple conditions for the query rule.

Abstract: Techniques for generating an interactive visualization tool for building nested queries are disclosed. The interactive nested query visualization tool allows a user to observe, analyze, and modify query characteristics and attributes of a set of nested queries. A system displays an interactive visual depiction of a set of nested queries. Visual representations of the nested queries are positioned relative to each other based on the relationships between the nested queries. The system displays, simultaneously with the set of nested queries, editable fields for a selected query. The system modifies a functionality of a user interface based on which of the nested queries is selected.

Abstract: Techniques for executing operations associated with sub-sets of queries in a set of nested queries are disclosed. A graphical user interface displays individual sub-queries as separate visual representations. Based on detecting a selection, a system executes a selected query in the set of nested queries, without executing parent queries in the set of nested queries. Based on detecting another selection, the system exports a selected query without exporting parent queries of the selected query. The system copies the metadata describing the selected query and transfers the metadata to another set of nested queries. Based on detecting another selection, the system displays a results count for a selected query. The system displays a number representing the number of results returned by the selected query, without displaying the query results.

Abstract: Techniques for tracing attributes through queries in a set of nested queries are disclosed. A graphical user interface displays individual sub-queries as separate visual representations. Based on detecting a selection, a system analyzes data underlying the visual representations to identify queries, among the set of nested queries, that are associated with a particular attribute. One selection results in the system analyzing the underlying data to identify an origin query for an attribute, from among the set of nested queries. Another selection results in the system analyzing the underlying data to identify queries, from among the set of nested queries, that use the attribute received from a selected query. Another selection results in the system generating SQL code for a selected subset of queries, among the set of nested queries.

Abstract: The disclosed apparatus may include (1) flagging, at a packet filter within a network device, a packet to be discarded instead of passed to a processing unit within the network device, (2) determining that the packet is part of a set of related packets that includes at least one additional packet destined at least intermediately for the network device, (3) identifying, by monitoring incoming packets received at the packet filter, the additional packet within the set of related packets, and then (4) discarding, due to the additional packet being included within the set of related packets, the additional packet instead of passing the additional packet to the processing unit. Various other apparatuses, systems, and methods are also disclosed.

Abstract: A disclosed method may include (1) receiving a packet at a tunnel driver in kernel space on a routing engine of a network device, (2) identifying, at the tunnel driver, metadata of the packet that indicates whether at least one firewall filter had already been correctly applied to the packet before the packet arrived at the tunnel driver, (3) determining, based at least in part on the metadata of the packet, that the firewall filter had not been correctly applied to the packet before the packet arrived at the tunnel driver, and then in response to determining that the firewall filter had not been correctly applied to the packet, (4) invoking at least one firewall filter hook that applies at least one firewall rule on the packet before the packet is allowed to exit kernel space on the routing engine. Various other apparatuses, systems, and methods are also disclosed.

Abstract: A disclosed method may include (1) determining that a packet traversing a network device has been selected for conditional tracing by (A) comparing a characteristic of the packet against a firewall rule that calls for all packets exhibiting the characteristic to be conditionally debugged while traversing the network device and (B) determining, based at least in part on the comparison, that the firewall rule applies to the packet due at least in part to the packet exhibiting the characteristic, (2) tracing a journey of the packet within the network device in response to the determination by collecting information about the packet's journey through a network stack of the network device, and then (3) performing at least one action on the network device based at least in part on the information collected about the packet's journey through the network stack. Various other systems, methods, and computer-readable media are also disclosed.

Abstract: A squelch detection device is provided. The squelch detection device receives first and second input signals and first and second threshold voltages. The squelch detection device determines a first common mode of the first and second input signals and a second common mode of the first and second threshold voltages. The squelch detection device averages the first common mode with the second common mode to produce an average common mode and sets the first common mode of the first and second input signals to the average common mode. The squelch detection device sets the second common mode of the first and second threshold voltages to the average common mode and determines a state of a squelch signal, indicative of whether the first and second input signals are attributable to noise, based on the first and second input signals and the first and second threshold voltages.