Abstract: This application describes techniques for testing fiber optic telecommunication systems, such as undersea fiber optic cable systems. Testing terminals may be deployed at a location of terminating equipment for a fiber optic cable. The testing terminals may be operated remotely. The testing terminals may be configured to programmatically test the cable by loading one or more tests and automatically configure the cable's transmitters and receivers based on predetermined loading schemes selected based on the tests to be performed. The testing terminals may iterate over channels and fiber pairs of the cable and may use back-to-back tests to remove artifacts from test results. Using the described techniques, a cable's channels and fiber pairs can be fully characterized in the amount of time afforded for a typical testing schedule, which was not generally possible using conventional testing.

Abstract: Methods, systems, and apparatus, including computer programs encoded on computer storage media, for machine learning. One of the methods includes receiving a message; parsing the message to identify individual sentences within the message; encoding each sentence into a vector that represents a semantic meaning of the sentence; applying one or more classification models to the message including: providing each vector to a machine learning model, wherein the machine learning model is trained to generate a prediction of one or more classifications for each sentence of the message; generating a predicted classification for the message as a whole; and determining a message routing based on the predicted classification.

Abstract: A fully automatic inductive sample-collecting bucket capable of storing sample information includes a bucket, and a bucket cover snap-fitted to an upper end of the bucket. A bucket cover cavity is formed in the bucket cover. A locking mechanism, and a control mechanism for driving the locking mechanism to act are integrated in the bucket cover cavity. An integrated circuit (IC) card inductive control assembly is integrated in the bucket cover. The bucket is provided with a radio frequency identification (RFID) chip. The IC card inductive control assembly is configured to identify IC card unlocking information of an external grip for cover opening work and to drive the control mechanism to work to control an action of the locking mechanism. The sample-collecting bucket integrates an RFID card capable of carrying sample coding information, and can realize the automatic cover-sealing and cover-opening function under the identification and control of the controller.

Abstract: There is provided a method of controlling a plurality of converter cells in a phase arm of a modular multilevel converter (MMC) in accordance with a main reference. The method includes dividing the main reference into a plurality of reference parts, and, by using a grouping of the plurality of converter cells into a plurality of groups, operating a plurality of modulators in parallel, each modulator controlling a respective one of the groups of converter cells in accordance with one of the reference parts. A phase arm controlled in accordance with such a method is also provided, as well as an MMC including at least one such phase arm, and a converter station including at least one such MMC.

Abstract: The present application relates to a method for controlling operation of a cell arranged in an arm of a voltage source converter, said arm being associated with a current phase in said voltage source converter. The cell may be a half-bridge or full-bridge cell. The method may comprise: upon detection of a predetermined fault type in the cell, depending on an average current in said arm during one period of fundamental frequency and on an operation mode of the voltage source converter, injecting a pre-defined circulating current into said arm; detecting a time period during which the arm current is in a negative arm current direction corresponding to a direction when arm current flows via a diode of a switch connected in parallel to a bypass switch, and controlling the bypass switch such that it closes within said time period. A control unit and voltage source converter are also provided.

Abstract: A method for saving power is provided. The method is used in a slave device. The method includes receiving a first switch request indicating to switch a clock source from a first clock to a second clock when the slave device enters sleep mode. The method includes transmitting a first clock source signal indicating to switch the clock source from the first clock to the second clock to registers. The method includes switching the clock source from the first clock to the second clock to the registers according to the first clock source signal.

Abstract: A method for saving power is provided. The method is used in a slave device. The method includes receiving a first system power management interface (SPMI) write command from an external device via a SPMI bus when the slave device is in sleep mode. The method includes turning on a system clock in response to the first SPMI write command indicating to turn on the system clock. The method includes allowing the external device to access the slave device.

Abstract: An energy supporting device for a high voltage direct current, HVDC, transmission system includes an energy supporting device for providing grid forming and/or virtual synchronous machine, VSM, capabilities to the HVDC transmission system. The energy supporting device comprises a plurality of cells configured to be connected to the HVDC transmission system, and a cell includes a full-bridge arrangement of power switches, an energy storage device electrically connected to the full-bridge arrangement, a resistor electrically connected between the plurality of cells and an electrical reference potential, and a bypass switch configured to allow the resistor to be bypassed. The energy supporting device is configured to be operated in a dissipation mode, in which the bypass switch is in an open state for allowing the resistor to dissipate electrical energy from the HVDC transmission system, and in which the energy storage devices of the plurality of cells are bypassed.

Abstract: The disclosure discloses a method and an apparatus for determining code generation quality and efficiency evaluation values based on multiple indicators. The method includes that: an object code is acquired; an interactive data set is acquired; a multidimensional evaluation indicators is determined and characteristic values corresponding to each piece of data in the interactive data set are extracted; characteristic values corresponding to each piece of data in the interactive data set are determined as a characteristic data set; a multidimensional syntax tree is constructed; feature learning is performed on the multidimensional syntax tree to obtain feature parameters; the evaluation parameter model is controlled to output an evaluation value. According to the disclosure, the evaluation method in a related art is to evaluate a static automatic code generation result, ignoring the influence of code changes on the evaluation result, resulting in low reliability of the evaluation result is solved.

Abstract: Herein disclosed include a flexible electronic device comprising a first component comprising a first biphasic portion, a second component, wherein the first component and the second component are in contact with an electrically conductive stretchable interface configured between the first component and the second component, wherein the electrically conductive stretchable interface comprises the first biphasic portion which is adhered to a portion of the second component, and wherein the first biphasic portion comprises a first polymer having (i) a surface partially covered with metal nanoparticles which are partially exposed at the surface, and (ii) metal nanoparticles which are completely embedded in the first polymer. The disclosure also includes a method of forming the flexible electronic device.

Abstract: A transport mechanism of a server rack including a carrier plate, a server rack disposed and fixed onto a top surface of the carrier plate, and multiple supporting assemblies respectively stacked onto a bottom surface of the carrier plate is provided. Each of the supporting assemblies has at least one cushion member. The cushion member has at least one hollow portion, and an opening of the hollow portion is exposed to an environment. The stiffness of the cushion member is smaller than the stiffness of the carrier plate. A pallet structure is also provided.

Abstract: An energy supporting device for a high voltage direct current, HVDC, transmission system is provided. The HVDC transmission system includes a first HVDC converter and a second HVDC converter connected to each other via an HVDC link. The energy supporting device comprises a plurality of cells configured to be connected in series to the HVDC link, a resistor electrically connected between the plurality of cells and an electrical reference potential, and a bypass switch configured to allow the resistor to be bypassed. A cell includes a full-bridge arrangement of power switches and an energy storage device electrically connected to the full-bridge arrangement.

Abstract: The processor comprises multiple sub-systems. Each sub-system is configured to generate a voltage switching signal. The processor also comprises a packetizing module coupled to the sub-systems. The packetizing module packetizes multiple voltage switching signals generated by the sub-systems to a packet. The processor also comprises a PMIF (power management interface) configured to receive the packet and output the packet.

Abstract: A method for forming a semiconductor structure in provided. The method includes providing a substrate, forming a gate electrode layer on the substrate, and performing a defluorination treatment on the gate electrode layer. The method also includes, after performing the defluorination treatment, forming a barrier layer on a portion of a surface of the gate electrode layer. The barrier layer is made of a material including titanium element.

Abstract: An energy supporting device for a high voltage direct current, HVDC, transmission system is provided. The HVDC transmission system includes a first HVDC converter and a second HVDC converter connected to each other via an HVDC link. The energy supporting device comprises a plurality of cells configured to be connected in series to the HVDC link, a resistor electrically connected between the plurality of cells and an electrical reference potential, and a bypass switch configured to allow the resistor to be bypassed. A cell includes a full-bridge arrangement of power switches and an energy storage device electrically connected to the full-bridge arrangement.

Abstract: A method for predicting performance of LED structure is provided. The prediction method mainly includes: collecting and extracting input feature parameters and output feature parameters of LED structures, and constructing corresponding datasets; preprocessing data in the datasets; constructing a model using a machine learning algorithm, setting structural parameters of the model, and performing initialization training on the model to obtain an initial model; using preprocessed datasets to train and optimize the initial model, thereby obtaining a prediction model; inputting input feature parameters of an LED structure to be predicted into the prediction model, thereby obtaining prediction values of output feature parameters of the LED structure to be predicted. The prediction method can predict the performance of LED structure, has short prediction time, and has high prediction accuracy.

Abstract: A method for predicting performance of solar cell structure includes: collecting and extracting input feature parameters of solar cell structures and corresponding output feature parameters; establishing corresponding data sets, and preprocessing the data sets according to a known criterion; constructing a model by utilizing a machine learning algorithm, and setting structural parameters and performing initialization training on the model; performing training optimization on the model subjected to setting the structural parameters and performing the initialization training by using a preprocessed training data set to obtain a prediction model; and inputting a preprocessed test data set of a to-be-predicted solar cell structure into the prediction model to obtain predicted values of output feature parameters of the to-be-predicted solar cell structure. The performance of solar cell structure can be rapidly predicted, which is convenient to operate and has a high accuracy.

Abstract: A non-belt automatic mechanized sampling system for a truck configured to collect materials from a carriage of the truck. The system includes an integrated sample preparation component having, in descending arrangement, a discharging mechanism and a feeder, a crusher, a constant mass dividing machine and a sample retention barrel. The system also includes a constant mass dividing machine configured to divide the crushed material into samples and discards. The samples are conveyed to a sample retention barrel and discards to a discharging mechanism, which is configured to convey the discards to the carriage.

Abstract: A transport mechanism of a server rack including a carrier plate, a server rack disposed and fixed onto a top surface of the carrier plate, and multiple supporting assemblies respectively stacked onto a bottom surface of the carrier plate is provided. Each of the supporting assemblies has at least one cushion member. The cushion member has at least one hollow portion, and an opening of the hollow portion is exposed to an environment. The stiffness of the cushion member is smaller than the stiffness of the carrier plate. A pallet structure is also provided.