Abstract: A method of managing an interaction of a student with a class about a subject, the subject having at least one lesson having at least one topic, the topic having at least one of exposition content, demonstration content and test content, the test content having a query and a scheme for mapping a response to a result, comprising: presenting content to the student and storing the interaction of the student with the content presented.

Abstract: Systems and methods of identifying infinite call loops using custom tracking headers are provided. In one exemplary embodiment, a method is performed by a first instance of a microservice operated by a first network node in a distributed microservice system having instances of one or more microservices operated by network nodes with each instance having a data cache operable to share data between instances of that microservice. The method includes receiving an indication that includes a message to access data that may be available in a data cache of an instance of the microservice, the indication also including one or more tracking identifiers with each tracking identifier corresponding to an instance of the microservice that successively sends or receives the message so as to determine that the message corresponds to a same message previously sent or received by the same instance of the microservice.

Abstract: Provided is a nonaqueous electrolyte secondary battery, including a positive electrode with a positive electrode active material capable of absorbing and releasing a metal ion; a negative electrode with a negative electrode active material capable of absorbing and releasing a metal ion; and a nonaqueous electrolyte solution; wherein the positive electrode active material includes a lithium transition metal compound, and the positive electrode active material includes at least Ni, Mn and Co, wherein the molar ratio of Mn/(Ni+Mn+Co) is larger than 0 and not larger than 0.28, the molar ratio of Ni/(Ni+Mn+Co) is 0.45 or more, the plate density of the positive electrode is 3.3 g/cm3 or more; and the nonaqueous electrolyte solution includes a monofluorophosphate and/or a difluorophosphate. A total content of the monofluorophosphate and/or difluorophosphate is 0.01% by mass or more in terms of the concentration in the nonaqueous electrolyte solution.

Abstract: In some examples, high speed bidirectional test of dual-fiber link may include providing at least one optical time-domain reflectometer (OTDR) and at least one optical data transceiver. At least one m×n optical switch may be optically connected to the at least one OTDR, the at least one optical data transceiver, and at least two fibers of a cable under test. For the m×n optical switch, m and n are at least two.

Abstract: Disclosed herein are systems and methods for a replaceable heart-valve system comprising a tubular braided frame, wherein the tubular braided frame comprises an inflow end, an outflow end, and comprising one or more commissure posts extending vertically away from the inflow end. The valve system further comprises a leaflet assembly, wherein the leaflet assembly comprises at least one valve leaflet, wherein the at least one leaflet comprises an inflow end, an outflow end, and one or more commissure tabs extending horizontally away from the inflow end; and wherein the one or more commissure tabs of the at least one leaflet is connected to the one or more commissure posts of the tubular braided frame.

Abstract: Device and method for protecting a submersible pump. The device can include a housing for connecting to a downhole pump, and a plurality of shelves disposed throughout the housing, wherein at least two shelves are axially spaced from one another, and each shelf provides a surface for supporting and collecting sand or other solids within the housing. A restrictor assembly can be disposed at one end of the housing and configured to allow fluid flow through the housing in one direction and at least partially restrict flow through the housing in an opposite, second direction.

Abstract: The invention provides an apparatus, system, and method for detecting a layer of contaminants, such as oil and/or hydrocarbons, on the surface of accumulated water within a confined area that is periodically evacuated by a pump. The detection of contaminant layers may be accomplished through the use of an optical detection system comprising a light source, and a conductive sensor comprising a horizontally-disposed plate and a stilling tube. Dissipation of turbulence and agitation of the accumulated water may be achieved by a stilling tube proximate one or more of the sensors disposed within the stilling tube. Additional sensors may detect high, intermediate, and low levels, and an integrated controller may determine the state of media within the confined area, the system being generally configured to keep the oil or other contaminant within the confined area while continuously and/or periodically pumping water away from the confined area.

Abstract: A biodegradable resin composition and a method for making the biodegradable resin composition are disclosed. The biodegradable resin composition has improved biodegradability by including polyethylene, a biodegradable resin, and polybutylene adipate terephthalate (PBAT).

Abstract: In some examples, high-speed hardware-based traffic analyzer integration with speed test control application may include receiving, from a speed test control application, speed test control instructions and data connection instructions to perform an upload and download high-speed test associated with network traffic for a network. The speed test control instructions and the data connection instructions may be forwarded to a speed test control server. A hardware-based traffic analyzer may perform, based on the speed test control instructions and the data connection instructions, the high-speed test associated with the network traffic for the network.

Abstract: A busbar disclosed herein includes: a first metallic member including a first plate portion; a second metallic member including a second plate portion; a swaged joint formed by plastically deforming the first plate portion of the first metallic member and the second plate portion of the second metallic member such that the first plate portion and the second plate portion are swaged together; and a metal joint formed by metal-joining the first plate portion of the first metallic member to the second plate portion of the second metallic member.

Abstract: A system and method for construction estimation using aerial images is provided. The system receives at least one aerial image of a building. An estimation engine processes the aerial image at a plurality of angles to automatically identify a plurality (e.g., perimeter and interior) lines in the image corresponding to a plurality of features of a roof the building. The estimation engine allows users to generate two-dimensional and three-dimensional models of the roof by automatically delineating various roof features, and generates a report including information about the roof of the building.

Abstract: There is disclosed an apparatus comprising at least one processing circuitry, and at least one memory for storing instructions to be executed by the processing circuitry. The at least one memory and the instructions are configured to, with the at least one processing circuitry, cause the apparatus at least to configure a set of substitute functions. The apparatus is further caused to request a service user profile associated with a migration request. Still further, the apparatus is caused to create, based on the requested service user profile, a modified service user profile comprising the set of substitute functions, and to provide the modified service user profile.

Abstract: A lead-free solder alloy may comprise tin, silver, copper, bismuth, cobalt, titanium, and antimony. The alloy may further comprise antimony, nickel, or both. The silver may be present in an amount from about 3.1% to 3.8% by weight of the solder. The copper may be present in an amount from about 0.5% to 0.8% by weight of the solder. The bismuth may be present in an amount from about 0.0% (or 1.5%) to about 3.2% by weight of the solder. The cobalt may be present in an amount from about 0.03% to about 1.0% (or 0.05%) by weight of the solder. The titanium may be present in an amount from about 0.005% to about 0.02% by weight of the solder. The antimony may be present in an amount between about 1.0% to about 3.0% by weight of the solder. The balance of the solder is tin.

Abstract: An assembly includes two tubular elements, a primary and a secondary seal arranged between the two tubular elements, a seal cavity formed between the two tubular elements and the primary and the secondary seal, and a seal monitoring apparatus having a housing and a position sensor. The housing has a chamber enclosing a separator which divides the chamber into a first and a second sub-chamber. The first sub-chamber is fluidly connected to the seal cavity and is filled with a hydraulic fluid. The separator is movable in a first direction relative to the housing to increase a volume of the first sub-chamber and decrease a volume of the second sub-chamber, and in a second direction to decrease the volume of the first sub-chamber and increase the volume of the second sub-chamber. The position sensor generates an electrical signal which represents a position of the separator relative to the housing.

Abstract: The present technology relates to a semiconductor device that includes an underfill resin and a light-shielding resin and allows to achieve a decrease in device size, a method of producing the same, and an electronic apparatus. The semiconductor device includes: a substrate having a pixel region in which a plurality of pixels is arranged; and one or more chips flip-chip bonded to the substrate via a connection terminal. A material of a first resin that protects a back surface of the chip and a material of a second resin that protects a side surface of the chip are different from each other. The present technology is applicable to, for example, a semiconductor device in which an image sensor chip and a signal processing chip are flip-chip bonded to each other.

Abstract: The present technology relates to a light receiving device capable of realizing high-speed transfer of charges, a drive control method therefor, and a distance measuring device. The light receiving device includes a pixel that transfers a charge generated in a photoelectric conversion unit to a predetermined FD in a case where a voltage of a predetermined value or more is simultaneously applied to gates of at least two transfer transistors. The present technology can be applied to, for example, a distance measuring module that measures a distance to a subject.

Abstract: An apparatus, method and computer program is described comprising: obtaining channel response data comprising a first channel frequency response of a channel over a first frequency spectrum, where the first channel frequency response is generated in response to a transmission over the channel or a simulation thereof; and generating an estimate of a second channel frequency response of the channel over a second frequency spectrum in response to applying the channel response data to a machine-learning model, where the second frequency spectrum is different to the first frequency spectrum.

Abstract: Method for identifying cylinders of an internal combustion engine which are subjected to misfire during operation, comprising a step of determining whether the engine is subjected to a misfire condition; a step of measuring vibrations generated upon operating the engine; and a step of identifying at least one cylinder subjected to a misfire in dependence on the measured vibrations.