Abstract: A method of forming a compound having the formula: includes the reaction: n the presence of a base comprising teat-butyl lithium, lithium diisopropylamide, sodium hydroxide, potassium hydroxide, lithium hydroxide, a potassium alkoxide or a sodium alkoxide to achieve a yield of at least 90%, wherein X is a halo atom selected from the group consisting of Cl, Br and I.

Abstract: Gradient power amplifier (GPA) systems and methods are provided. A GPA system may include a plurality of paralleled GPAs; and at least one controller operably coupled to the plurality of paralleled GPAs. The at least one controller may be configured to perform operations including: obtaining a total current parameter of the plurality of paralleled GPAs; determining, based on the total current parameter and a target current parameter, a first difference value; and determining, based on the first difference value, a first control parameter of a first GPA of the plurality of paralleled GPAs, wherein the first control parameter is configured to control an output current of the first GPA.

Abstract: A method of forming a compound having the formula (I?): (I?) includes the reaction: (II?) in the presence of a base, wherein X is a halo atom selected from the group consisting of Cl, Br and I.

Abstract: An information search method and apparatus, an electronic device, a computer-readable storage medium, and a computer program product are provided. The information search method includes receiving a request message including query information from a client; determining a suggested word result and a prefetched search result corresponding to the query information based on the request message; returning the suggested word result as a first response message for the request message to the client; and returning the prefetched search result as a second response message for the request message to the client.

Abstract: The present disclosure relates to a radio frequency power amplifier (RFPA) control device. The RFPA control device may include an input signal processing module configured to process an input signal into two signals. A first signal may be used for signal detection, and a second signal may be used for signal amplification. The RFPA control device may also include a delay module. The delay module may be disposed between the input signal processing module and an adjustment module. The delay module may be configured to determine a delay of the second signal such that the second signal and the control signal roughly simultaneously reach the adjustment module.

Abstract: The present disclosure discloses a water outlet device comprises a body portion and a waterway switch device. The body portion comprises an inlet waterway, a middle waterway, and three dividing waterways. The waterway switch device is disposed on the body portion and comprises two switch valves and a button, one switch valve of two switch valves cooperates with the inlet waterway, the middle waterway, and one waterway of the three dividing waterways, and the other second switch valve of two switch valves cooperates with the middle waterway and another two waterways of the three dividing waterways. The button is configured to swing relative to the body portion, the button swings to be in one of three gear positions, and the button is operatively connected to the two switch valves to control the two switch valves.

Abstract: The present disclosure discloses a water outlet assembly and a water outlet assembly. The water outlet assembly comprises an ejector and a water outlet portion. The ejector and the water outlet portion are disposed along a water flow direction. The ejector comprises a jet hole. The water outlet portion comprises a shielding portion and a water outlet hole penetrating the shielding portion. An opening of the water outlet hole is enlarged along the water flow direction. Water ejected from the jet hole is divided into an impact portion and a straight portion, the impact portion impacts the shielding portion and flows out along an edge of the water outlet hole to define a water curtain, and the straight portion directly flows through the water outlet hole to be ejected to define straight water.

Abstract: A bubble water generating device, including: a flow divider, a mixer, an air intake runner, and a water outlet cover the flow divider includes at least one first water inlet hole; a first chamber is formed between the mixer and the flow divider; the mixer includes at least one second water inlet hole corresponding to the at least one first water inlet hole one by one, and at least one return hole; the flow area of each second water inlet hole is greater than that of the corresponding first water inlet hole, the return hole, the first water inlet hole and the second water inlet hole are all communicated with the first chamber; the air intake runner is communicated with the first chamber; a second chamber communicating with the second water inlet hole and the return hole is formed between the water outlet cover and the mixer.

Abstract: The present disclosure relates to systems and methods for energy imaging. The method may include obtaining a reference waveform of a tube voltage of a radiation source of a scanner. The reference waveform may be formed based on a superposition of a sine wave and one or more harmonics corresponding to the sine wave. The method may include causing a high voltage generator to generate the tube voltage changing between a first voltage and a second voltage lower than the first voltage according to the reference waveform. The tube voltage may be provided to the radiation source for generating radiation rays. The method may further include causing the scanner to perform energy imaging.

Abstract: The present disclosure discloses a water outlet device and a kitchen faucet. The water outlet device comprises three water outlet passages, a first water outlet portion comprising one or more first water outlet nozzles, a second water outlet portion comprising one or more second water outlet nozzles, and a third water outlet portion. Each of the first water outlet portion and the second water outlet portion respectively has an annular structure. The second water outlet portion is separated from the first water outlet portion in an upper and lower direction. The one or more second water outlet nozzles correspond to the one or more first water outlet nozzles to enable fluid ejected from the one or more second water outlet nozzles to pass through the one or more first water outlet nozzles.

Abstract: Embodiments of the preset disclosure include a method, a system, and a computer program product for rearranging a set of filters within a data streams environment. The method includes setting a first filter ordering of two or more filter processing elements. The method includes determining a filtering efficiency of the first filter ordering. The determining of the filtering efficiency includes monitoring a runtime, one or more tuples, and an amount of tuples retained after filtering of the first filter ordering. The method includes creating a second filter ordering of the two or more filter processing elements. The method includes comparing the filtering efficiency of the second filter ordering to the first filter ordering. The method includes selecting the second filter ordering in response to comparing the filtering efficiency of the second filter ordering to the filtering efficiency of the first filter ordering.

Abstract: A water outlet device for different water sprays from a same nozzle comprises a water outlet portion, and a control mechanism, the water outlet portion comprises a water outlet nozzle, the water outlet nozzle comprises a water outlet, the water outlet nozzle further comprises at least two water inlets, flow directions of the at least two water inlets are not parallel to a flow direction of the water outlet, the control mechanism is connected to the at least two water inlets to control a water inlet condition of each of the at least two water inlets, the water inlet condition comprises at least one of a flow volume or whether the water is flowing or not flowing, and the control mechanism controls the water inlet condition of each of the at least two water inlets to enable the water outlet nozzle to discharge the different water sprays.

Abstract: The present application provides a terahertz spectral imaging data reconstruction method, an apparatus, a device, and a storage medium. The method includes: scanning a target object according to the first spatial interval and the first time domain sampling period to acquire the first terahertz spectral data; scanning the target object according to the second spatial interval and the second time domain sampling period to acquire the second terahertz spectral data, the first spatial interval is larger than the second spatial interval, and the first time domain sampling period is larger than the second time domain sampling period; and reconstructing the second terahertz spectral data on basis of the first terahertz spectral data by using the preset reconstruction method to obtain the third terahertz spectral data.

Abstract: A method for content caching in information centric network virtualization includes receiving, by a first node, a first data packet; in response to a cache distance identifier hop of the first data packet being less than a preset maximum cache distance, setting hop=hop+1 and sending the first data packet to a next node by the first node; in response to the hop being not less than the preset maximum cache distance and there being available cache space in the first node, setting hop=0, storing the first data packet, and sending the first data packet to the next node by the first node. The node determines whether to cache a data packet based on the cache distance identifier of the data packet, which comprehensively considers the cache energy consumption caused by caching the data packet in the node and the transmission energy consumption caused by transmission of the data packet in the link, thereby effectively reducing the total energy consumption of the network.

Abstract: A digital circuit robustness verification method is provided that includes the following steps. An internal storage circuit and an external storage circuit corresponding to a circuit under test are set to store a plurality of random values and a configuration of the circuit under test for performing a predetermined function is set by a processing circuit. A driving signal corresponding to the predetermined function is transmitted to the circuit under test by a previous stage circuit, such that the circuit under test executes the predetermined function to further generate an output signal. The determination as to whether the output signal is correct or not is made by a next stage circuit, and the circuit under test is determined to pass a robustness verification when the output signal is correct.

Abstract: An apparatus, method and computer program product for query optimization in a Relational Database Management System (RDBMS), wherein an optimizer accesses a query expression repository (QER), so that the optimizer learns from previous versions of the queries to improve current and subsequent versions of the queries. The QER stores planning and execution information for QEs from the previous versions of the queries, wherein the QEs comprise table relations, intermediate results and/or final results of operations in the previous versions of the queries. The optimizer searches the QER for QEs from the query execution plans, and uses information from the QEs stored in the QER when optimizing the current and subsequent versions of the queries. The optimizer may also reuses results from the QEs stored in the QER.

Abstract: The present disclosure relates to a radio frequency power amplifier (RFPA) control device. The RFPA control device may include an input signal processing module configured to process an input signal into two signals. A first signal may be used for signal detection, and a second signal may be used for signal amplification. The RFPA control device may also include a delay module. The delay module may be disposed between the input signal processing module and an adjustment module. The delay module may be configured to determine a delay of the second signal such that the second signal and the control signal roughly simultaneously reach the adjustment module.

Abstract: The present invention provides an intelligent dynamic control system of an indoor temperature. The system includes a controller, and a human-computer interaction interface, a temperature adjustment device, an indoor temperature collector and an outdoor temperature collector, which are respectively connected with the controller.

Abstract: A method for thickness measurement of a multi-layer object combines frequency analysis and a theoretical model. The frequency analysis is used to determine the thickness of a thicker layer of the object. The theoretical model is used to determine the thickness of the thinner layer of the object.

Abstract: A computer-implemented method includes receiving, by a computing device via an application programming interface (API) or user interface, compliance definitions identifying compliance checks for endpoints in a cloud network; generating, by the computing device, a compliance check inventory identifying the compliance checks and actions associated with the compliance checks; storing, by the computing device, the compliance check inventory in a computer storage system identifying, by the computing device, redundant actions in the compliance check inventory; identifying, by the computing device, outdated actions in the compliance check inventory; and updating, by the computing device, the compliance check inventory by eliminating the redundant actions and the outdated actions.