Abstract: An electrically assisted forming process and device for a high-strength metal alloy thin-walled pipe includes a die sleeve, wiring terminals, a pulse power supply, a die seat, sealing baffle plates, a drawing die, and a cooling water circulation chamber. A process for forming a high-strength metal alloy thin-walled pipe includes first, graphite or fusible metal, i.e., an aluminum rod, is introduced into a high-strength metal alloy pipe to be drawn to fill the whole pipe; and then, pulse current is introduced into a plastic deformation area of the thin-walled pipe. A cooling device can be provided to achieve a good cooling effect. The thin-walled pipe with corresponding length is cut according to a production requirement after processing is completed, and annealing treatment is performed in a vacuum heat treatment furnace.

Abstract: A cleaning attachment and rotary tool for cleaning are provided. A cleaning attachment includes a housing, a plurality of bristles, and a drive shaft extending from the housing in an axial direction, the drive shaft being coupled to the housing such that rotation of the drive shaft causes rotation of the housing. The housing includes a reservoir, a valve for dispensing the fluid from the reservoir, and at least one resilient element surrounding an axis defined by the drive shaft. Translation of the drive shaft along the axial direction causes compression of the resilient element, and compression of the resilient element causes the valve to open to dispense fluid from the reservoir. A rotary tool for cleaning includes the cleaning attachment and a rotary tool having a motor, power source, and a chuck configured to receive the drive shaft of the cleaning attachment.

Abstract: There is provided a phase shifter having a phase shift region and a peripheral region, and including a first substrate, a second substrate and a dielectric layer between such two substrates; the first substrate includes a first dielectric substrate, a first electrode and a first auxiliary structure; the second substrate includes a second dielectric substrate, a second electrode and a second auxiliary structure; the phase shift region includes overlapping regions; the first electrode and the second electrode are located in the phase shift region, and have orthographic projections, on the first dielectric substrate, overlapped at least partially in the overlapping regions; the first auxiliary structure is in the peripheral region and on a side, close to the dielectric layer, of the first dielectric substrate; the second auxiliary structure is in the peripheral region and on a side, close to the dielectric layer, of the second dielectric substrate.

Abstract: A case for an electronic device includes: a side wall; a back wall; and a support member, which is ring shaped and is connected with the side wall or the back wall and capable of moving relative to the side wall or the back wall, so as to support the case. The support member is moveable between a folded position and an unfolded position. The support member includes a connecting section. The case further includes a connecting element configured to pivotably connect the support member to the side wall or the back wall, the connecting element includes a connecting portion stacked on the connecting section in a depth direction of the support member. One of the connecting section and the connecting portion defines at least two fixing holes, and the other one is provided with at least two positioning protrusions engaged in the fixing boles respectively in the depth direction.

Abstract: The embodiments of the present disclosure provide a method and a system for parameter adjustment of street lamps in a smart city based on an Internet of Things, the method is realized by the system, which includes a user platform, a service platform, a management platform, a sensor network platform and an object platform, the method is executed by the management platform, comprising: issuing a data acquisition instruction to receive road images acquired by the object platform; issuing a parameter determination instruction to determine irradiation intensities of the street lamps on a road based on the road images; acquiring navigation routes of vehicles by communicating with navigation systems of the vehicles; determining road segments where the vehicles are coming and estimated times when the vehicles arrive at the road segments; and adjusting the irradiation intensities of the street lamps at the road segments in a preset time in advance.

Abstract: A semiconductor device structure and methods of forming the same are described. The structure includes a gate dielectric layer disposed over a substrate, a gate electrode layer disposed over the gate dielectric layer, and a first gate spacer disposed adjacent the gate dielectric layer. The first gate spacer includes an inner surface facing the gate dielectric layer and an outer surface opposite the inner surface, and the first gate spacer includes a fluorine concentration that decreases from the inner surface and the outer surface towards a center of the first gate spacer. The structure further includes a second gate spacer disposed on the outer surface of the first gate spacer, and the second gate spacer includes a fluorine concentration that decreases from an outer surface towards an inner surface.

Abstract: The present disclosure provides method, Internet of Things (IoT) system, and medium for correcting reading of a gas meter in smart gas. The method may be implemented by a smart gas device management platform of an IoT system for correcting reading of the gas meter in smart gas. The method may include: obtaining reading data of the gas meter, wherein the reading data includes a first reading data and a second reading data; determining a historical flow distribution condition; determining a current flow distribution condition; determining a first confidence level of the reading data; in response to a determination that the first confidence level is smaller than a confidence level threshold, obtaining a working condition parameter; and determining a correction value of the second reading data through a reading data correction model.

Abstract: The present disclosure provides a case for an electronic device and a magnetic assembly. The case includes a side wall, a back wall connected with the side wall to define a receiving cavity for receiving the electronic device, and a magnetic assembly, the magnetic assembly includes a support member connected with the side wall or the back wall, and a magnetic alignment member, the support member is capable of moving relative to the side wall or the back wall, so as to support the case, the magnetic alignment member is detachably or fixedly connected with the support member connected with the back wall or the side wall. The case of the present disclosure is convenient to use.

Abstract: The present disclosure provides a method for power consumption analysis and troubleshooting of a production line based on an Industrial Internet of Things, system, and storage medium thereof.

Abstract: The embodiments of the present disclosure provide a method for post-disaster contact in a smart city based on Internet of Things, which is applied to a management platform. The method comprises: in response to the occurrence of a disaster event, obtaining event-related information from an object platform through a sensor network platform; determining information and status of one or more related objects based on the event-related information; determining one or more contact persons who need to be notified based on the information of the one or more related objects; and sending notification information to the one or more contact persons by sending the notification information to a user platform through a service platform.

Abstract: In a method for connection between a first electronic device and a second electronic device using a Universal Serial Bus (USB) system of the first electronic device, the first electronic device enables a first connection mode. The first electronic device allocates Internet Protocol (IP) addresses to the first electronic device and the second electronic device and the first electronic device disables transmitting data received using the USB system to a mobile communications system of the first electronic device.

Abstract: The embodiments of the present disclosure provide a method for optimizing performance indicators of smart gas, a smart gas Internet of Things (IoT) system, and a medium. The method may comprise obtaining at least one user need through the smart gas user platform based on the smart gas service platform; determining at least one optimization objective based on the at least one user need; determining a constraint that a target proportioning feature satisfies according to the at least one optimization objective; generating at least one candidate proportioning feature according to the constraint; performing at least one round of iterative processing on the at least one candidate proportioning feature, and determining the candidate proportioning feature and an evaluation value after each round of iteration until the evaluation value satisfies the constraint; and determining the candidate proportioning feature with the evaluation value satisfying the constraint as the target proportioning feature.

Abstract: Industrial internet of things (IoT) with a sensing network platform in a post-sub-platform type where an issuing cache is set and controlling method thereof are provided, which has adopted a form of a five-platform structure to construct an intelligent manufacturing industrial IoT. Each platform has a corresponding hardware device. As a service platform and a management platform adopt a centralized layout, while the sensing network platform adopts a post-sub-platform layout, the sensing network platform may receive large quantities of instructions issued by the management platform, and balance the coordination of various instructions at the same time, which makes the present disclosure very suitable for large-scale production lines with the requirement of high overall coordination and makes the present disclosure have strong applicability.

Abstract: A device includes a substrate and a dielectric layer on the substrate. The device also includes a light sensitive component in the dielectric layer and a trench having a first portion disposed in the substrate and a second portion disposed in the dielectric layer. The trench is adjacent the light sensitive component and includes an adhesion layer in the first portion and the second portion, an optical isolation layer on the adhesion layer, and a first fill material in the first portion and a second fill material in the second portion. The first fill material is characterized by a first coefficient of thermal expansion (CTE) that matches a CTE of the substrate and the second fill material is characterized by a second CTE that matches a CTE of the dielectric layer.

Abstract: Method for monitoring low-temperature pipeline based on smart gas, including: obtaining gas data and pipeline data of each segment of a gas pipeline and weather data of a position of each segment of the gas pipeline; determining at least one target pipeline; determining icing data of the at least one target pipeline by processing the gas data, the pipeline data, and the weather data of the at least one target pipeline based on an icing prediction model, wherein the icing prediction model is a machine learning model; and generating a thawing instruction based on the icing data, and controlling a natural gas heating device to perform a thawing operation on the at least one target pipeline based on the thawing instruction.

Abstract: An electro-optical device is fabricated on a semiconductor-on-insulator (SOI) substrate. The electro-optical device comprises a silicon dioxide layer, and an active layer having ferroelectric properties on the silicon dioxide layer. The silicon dioxide layer includes a first silicon dioxide layer of the SOI substrate and a second silicon dioxide layer converted from a silicon layer of the SOI substrate. The active layer includes a buffer layer epitaxially grown on the silicon layer of the SOI substrate and a ferroelectric layer epitaxially grown on the buffer layer. The electro-optical device further comprises one or more additional layers over the active layer, and first and second contacts to the active layer through at least one of the one or more additional layers. Methods of fabricating the electro-optical device are also described herein.

Abstract: Embodiments of a photovoltaic device are provided herein. The photovoltaic device can include a layer stack and an absorber layer disposed on the layer stack. The absorber layer can include a first region and a second region. Each of the first region of the absorber layer and the second region of the absorber layer can include a compound comprising cadmium, selenium, and tellurium. An atomic concentration of selenium can vary across the absorber layer. The first region of the absorber layer can have a thickness between 100 nanometers to 3000 nanometers. The second region of the absorber layer can have a thickness between 100 nanometers to 3000 nanometers. A ratio of an average atomic concentration of selenium in the first region of the absorber layer to an average atomic concentration of selenium in the second region of the absorber layer can be greater than 10.

Abstract: A system for purifying helium gas, a method, and an application. The system includes a first gas-liquid separation device, a primary helium extraction tower, a second gas-liquid separation device, a secondary helium extraction tower, and a nitrogen removal tower, which are in sequential communication. The first gas-liquid separation device performs first treatment to convert helium-containing natural gas into a first gas and first liquid phases; the primary helium extraction tower performs first distillation on the first gas and first liquid phases to obtain a second gas and second liquid phases; the second gas-liquid separation device performs second treatment to convert the second gas phase to a third gas and third liquid phase; the secondary helium extraction tower performs second distillation on the third gas and third liquid phases to obtain crude helium and a fourth liquid phase form which nitrogen is removed by the nitrogen removal tower.

Abstract: The embodiments of the present disclosure provide methods and systems for power-supply management in a smart urban based on Internet of things (IoT), performed by an urban power-supply management platform. The method includes obtaining a first power-generation data by a sensor network platform; wherein the first power-generation data is determined by summarizing second power-generation data, and the second power-generation data is residential self-power-generation data; determining a power-supply prediction based on first power-generation data and environmental data; and sending the power-supply prediction to the power-supply company.