Abstract: An electromagnetic wave absorber including a substrate and a plurality of magnetic material bodies is provided. The plurality of magnetic material bodies are disposed on the substrate in an array, so that the electromagnetic wave absorber has a plurality of electromagnetic wave absorption frequencies in addition to an electromagnetic wave characteristic frequency of the plurality of magnetic material bodies. A ratio of one of the plurality of electromagnetic wave absorption frequencies to the electromagnetic wave characteristic frequency is greater than 1 and is less than or equal to 6.

Abstract: Disclosed in embodiments of the present application are a linear resistive element and a preparation method therefor. The linear resistive element includes a substrate unit, a function unit and an electrode unit. The substrate unit includes a substrate layer, which is configured to connect the function unit and the electrode unit. The electrode unit includes a first electrode and a second electrode. The first and second electrodes are deposited on the substrate layer, and the function unit is connected between the first and second electrodes. The function unit includes first dielectric layers and resistive layers. The first dielectric layers and the resistive layers are deposited on the substrate layer in an alternately stacked manner. A number of the resistive layers is at least two, and a conductive filament for conductively connecting the first and second electrodes is formed in each of the resistive layers.

Abstract: An electronic device and a method of intra prediction. The method includes: a first reference area adjacent to a first target image block is obtained from a reference image block, and the first reference area includes multiple first reference samples corresponding to a first direction; an intra mode of the first target image block is determined according to the first reference samples; and the intra mode is outputted.

Abstract: A shaping apparatus for shaping a workpiece includes a controlling module and a pressing module, a moving module, a sensing module and a shaping calculation module that are connected to the controlling module. The pressing module includes two pressing elements respectively applying load to a top/bottom surface of the workpiece. The moving module includes a moving platform moving the workpiece horizontally between a sensing zone and a processing zone. The sensing module performs a capturing process on the workpiece in the sensing zone to obtain a surface information. The shaping calculation module compares the surface information with an ideal shape data to calculate and get a shaping information. The moving platform moves the workpiece to the sensing zone. The sensing module performs a capturing process on the workpiece. The moving platform moves the workpiece to the processing zone. The pressing module performs a shaping treatment on the workpiece.

Abstract: A thermal compensation system for machine tools includes a thermal compensation-monitoring device and a cloud processing device. The thermal compensation-monitoring device receives a plurality of temperature signals of a workpiece and corresponding processing tolerance data to build or update a thermal compensation database. The cloud processing device provides a thermal compensation model, and applies the model with the characterized temperature signals and the tolerance data to generate a compensation value so as to decide whether or not to modify the model or to run a compensation is necessary.

Abstract: A power module package structure includes a first substrate and a power component. The first substrate includes at least one conductive layer on a surface thereof. The power component includes a first chip and a first spacer. The first chip has at least one electrode. The first spacer in a heat dissipation space between the first substrate and the first chip includes an insulating heat dissipation layer in the heat dissipation space and multiple vertical conductive connectors, each of the vertical conductive connectors penetrates the insulating heat dissipation layer. The insulating heat dissipation layer surrounds the vertical conductive connectors and electrically isolates the vertical conductive connectors. The vertical conductive connector includes two opposite ends, one end electrically connected to the conductive layer, and the other end electrically connected to the electrode to form a conductive path and a heat dissipation path between the first chip and the first substrate.

Abstract: A copolyester is formed by copolymerizing a depolymerized polyester and succinic acid. The depolymerized polyester includes depolymerized polyethylene terephthalate (PET), and the depolymerized PET is formed by depolymerizing PET with ethylene glycol. The repeating unit of PET and the succinic acid have a molar ratio of 40:60 to 50:50. The repeating unit of PET and the ethylene glycol have a molar ratio of 100:100 to 100:500. The copolyester has a storage modulus of 1*104 Pa to 1*106 Pa at 80° C. The copolyester can be used in a hot melt adhesive.

Abstract: Doped titanium niobate is provided, which has a chemical structure of Ti(1-x)M1xNb2O(7-z)Sz, wherein M1 is Li, Mg, or a combination thereof; 0?x?0.15; and 0.0025?z?0.075. A battery is provided, which includes a negative electrode; a positive electrode; and an electrolyte disposed between the negative electrode and the positive electrode, wherein the negative electrode includes the doped titanium niobate.

Abstract: A conductive composition, conductive layer and electronic device employing the same are provided. The conductive composition includes 3-7 parts by weight of a component (A) and 93-97 parts by weight of a component (B). The component (A) is an epoxy compound, wherein the epoxy compound is a compound having at least one glycidyloxycarbonyl group. The component (B) includes a first metal particle, wherein the first metal particle has a particle size distribution D90 that is less than or equal to 1 ?m. The total weight of the component (A) and component (B) is 100 parts by weight.

Abstract: A power supply system, a fuel cell power generation performance detection device and a control method thereof are provided. The fuel cell has a rated output voltage and an internal resistance having a preset resistance value. The detection device includes a test resistor, a first test switch, a current detection unit and a control unit. The control unit controls the first test switch and the current detection unit to send a first control signal to selectively turn on the first test switch. When the first test switch is turned on, the fuel cell, the test resistor, the first test switch and the current detection unit define a test loop. The current detection unit detects a test current passing through the test loop. The control unit obtains a real-time resistance value of the internal resistance based on the test current to evaluate the power generation performance of the fuel cell.

Abstract: A hardware-in-the-loop (HIL) simulation device is provided, which includes a processing circuit and a pulse-width modulation (PWM) signal observation circuit. The PWM signal observation circuit includes an energy storage unit and the energy storage unit is coupled to the processing circuit. A signal source transmits a PWM signal to the processing circuit and the PWM signal observation circuit, and the energy storage unit is charged when the PWM signal is at high level. The processing circuit detects the voltage of the energy storage unit when detecting the falling edge of the PWM signal so as to calculate the duty cycle of the PWM signal.

Abstract: A graph-based natural language optimization method and an electronic apparatus are provided. The method is adapted for an electronic apparatus with a processor. In the method, an input sentence submitted by a user is received, and multiple domain-related entities are extracted from the input sentence. The domain-related entities are input to a graph database to analyze a connection relationship between the domain-related entities, and filling data is obtained from the graph database based on the connection relationship. The input sentence and the filling data are integrated via a natural language processing technology to generate an optimized natural language sentence.

Abstract: A method of manufacturing copolymer includes mixing and reacting a polyester, an aliphatic polyol or an aliphatic polyol oligomer, and a first catalyst in a first region of a screw to form a polyester polyol, and side-feeding a lactone or a lactam to a second region of the screw to copolymerize the lactone or a lactam and the polyester polyol to form a copolymer, wherein the first region and the second region are continuous connecting regions.

Abstract: An aluminum alloy material includes 1.0 wt % to 13.0 wt % of Si, 0.2 wt % to 1.4 wt % of Fe, 0.2 wt % to 0.8 wt % of Ni, and the remainder being Al and inevitable impurities. The aluminum alloy material can be 3D printed or die-casted to form an aluminum alloy object with a high thermal conductivity.

Abstract: An abnormal detection circuit is provided. The abnormal detection circuit includes a conversion circuit, a voltage detection circuit, and a warning circuit. The conversion circuit receives a three-phase alternating current (AC) power and converts the three-phase AC power into a driving power. The voltage detection circuit detects each phase of the three-phase AC power. When a voltage value of at least one phase AC power of the three-phase AC power is abnormal, the voltage detection circuit uses the driving power to output at least one control signal corresponding to the abnormality. The warning circuit is driven by receiving the driving power and outputs at least one warning signal corresponding to the abnormality in response to the at least one control signal.

Abstract: A composition and a method for preparing the same are provided. The method for preparing the composition includes providing a polyethylene terephthalate waste. The polyethylene terephthalate waste is subjected to a depolymerization in the presence of a catalyst and an alcoholysis agent to obtain a mixture, wherein an oxidizing atmosphere is continuously introduced into the depolymerization. The mixture is subjected to a solid-liquid separation to obtain a solid. The solid is subjected to a purification to obtain the composition.

Abstract: The present disclosure provides a heat transfer fluid for thermal management includes a liquid carrier and a gas generation substance. The gas generation substance is distributed in the liquid carrier. The gas generation substance includes at least one of two-dimensional nanomaterial and three-dimensional nanomaterial. The present disclosure also provides a thermal management device and a battery thermal management system having the heat transfer fluid.

Abstract: A reference element of an infrared sensor includes a substrate, a sacrificial layer, a supporting structure, a fence structure and an infrared sensing structure. The sacrificial layer is disposed on the substrate. The supporting structure is disposed on the substrate wherein the top surface of the supporting structure is coplanar with the top surface of the sacrificial layer. The fence structure is disposed on the substrate and surrounds the sacrificial layer wherein the top surface of the fence structure is coplanar with the top surface of the sacrificial layer, and there is an air gap between the fence structure and the supporting structure. The infrared sensing structure is disposed on the sacrificial layer, the supporting structure and the fence structure, and the infrared sensing structure has an opening corresponding to the air gap.

Abstract: A coupled physiological signal measuring device is provided. The coupled physiological signal measuring device includes at least two measuring electrodes, a signal processing unit and a multiplex feedback circuit unit. The measuring electrodes are used to obtain a real-time physiological signal through measurement. The signal processing unit includes a discharge control element. If an electrostatic surge of the real-time physiological signal meets a condition, a discharge control signal is outputted. The multiplex feedback circuit unit is used to discharge the measuring electrodes according to the discharge control signal.

Abstract: A coating material includes a modified particle and a reactive compound. The modified particle includes a core, and a silane coupling agent having an epoxy group (or a double-bond) grafted onto a surface of the core. When the silane coupling agent having the epoxy group is grafted onto the surface of the core, the reactive compound includes a non-silicon multi-epoxy compound and a silicon-containing multi-epoxy compound. When the silane coupling agent having the double-bond is grafted onto the surface of the core, the reactive compound includes a multi double-bond compound.