Abstract: In implementations of object boundary generation, a computing device implements a boundary system to receive a mask defining a contour of an object depicted in a digital image, the mask having a lower resolution than the digital image. The boundary system maps a curve to the contour of the object and extracts strips of pixels from the digital image which are normal to points of the curve. A sample of the digital image is generated using the extracted strips of pixels which is input to a machine learning model. The machine learning model outputs a representation of a boundary of the object by processing the sample of the digital image.

Abstract: A blower includes a housing, a fan, a motor, and a speed regulator assembly including a switch for controlling the motor operation, a control member, and an actuating member both enabled to control the switch. The actuating member can move between an off state and an on state. The actuating member can move to a predefined limit position. The rotational speed of the motor corresponding to the predefined limit position is a predefined rotational speed. When the actuating member is in the off state, the motor stops running. When the actuating member is in the on state, the motor rotates. The control member has at least a first control state and a second control state. In the second control state, the motor runs at a maximum rotational speed. In the first control state, the motor runs at an intermediate speed lower than the maximum rotational speed.

Abstract: The present disclosure proposes a keybed device, including: a keybed support; a keybed arranged on the keybed support; a key height limiting column arranged in one-to-one correspondence with each key in the keybed, and an end of the key height limiting column is fixed on a bottom surface of the corresponding key; a pressure detecting device arranged in one-to-one correspondence under each key height limiting column to detect a pressing strength of each key height limiting column; and a flexible support structure arranged below each key height limiting column and located on at least one side of each pressure detection device. The keybed device includes a flexible support structure, which can avoid false triggering of the Aftertouch effect. A same depth is pressed down from the flexible support structure to obtain a consistent Aftertouch effect, and the performance effect is controllable.

Abstract: A multi-station concurrent testing method, comprising: a step A in which the control station controls the handler to send SOT signal(s) of corresponding testing station(s) based on previous testing results at adjacent testing stations of the testing stations; a step B in which the control station constructs an SOT signal sequence based on the received SOT signal(s) and in correspondence to orders of the testing stations; and a step C in which the control station compares the SOT signal sequence and an SOT signal prediction value sequence generated by the control station, wherein if the SOT signal sequence and the SOT signal prediction value sequence match, the corresponding testing station(s) executes the test of device(s) under test, and otherwise, the handler is controlled to purge the devices under test at the testing stations, the SOT signal prediction value sequence is generated based on previous testing results at the testing stations.

Abstract: A multi-station concurrent testing method, comprising: a step A in which the control station controls the handler to send SOT signal(s) of corresponding testing station(s) based on previous testing results at adjacent testing stations of the testing stations; a step B in which the control station constructs an SOT signal sequence based on the received SOT signal(s) and in correspondence to orders of the testing stations; and a step C in which the control station compares the SOT signal sequence and an SOT signal prediction value sequence generated by the control station, wherein if the SOT signal sequence and the SOT signal prediction value sequence match, the corresponding testing station(s) executes the test of device(s) under test, and otherwise, the handler is controlled to purge the devices under test at the testing stations, the SOT signal prediction value sequence is generated based on previous testing results at the testing stations.

Abstract: Provided is a light-emitting diode and a method for preparing the same. The light-emitting diode includes an anode, a hole transport layer, a perovskite light-emitting layer, an electron transport layer and a cathode stacked in sequence, in which the perovskite light-emitting layer includes a first sublayer and a second sublayer stacked in sequence, with a material for forming the first sublayer including an inorganic perovskite material, and with a material for forming the second sublayer being an organic perovskite material.

Abstract: An apparatus and an associated method relates to a directionally polarized deceleration module (PDM) include a shuttle (125) fixedly coupled to a spring-biased spool (120) rotatable coupled to a module housing (115), a dynamic braking member (DBM) (130) and the shuttle (125) configured to travel inside a channel anchored to the module housing (115). A tether may be anchored on a proximal end to the spool (120). As the tether is retracted, the DBM (130) may be pushed by an angled distal-end of the shuttle (125). The DBM (130) may be forced between the angled distal-end of the shuttle (125) and an inner channel wall, providing motional resistance to the tether. As the tether is extracted, the DBM (130) may be pushed substantially normal to a proximal-end of the shuttle (125), providing minimal motional resistance to the tether. Various PDMs may decelerate safety lanyards in one direction to substantially avoid tangling and/or damage.

Abstract: Provided is a light-emitting diode and a method for preparing the same. The light-emitting diode includes an anode, a hole transport layer, a perovskite light-emitting layer, an electron transport layer and a cathode stacked in sequence, in which the perovskite light-emitting layer includes a first sublayer and a second sublayer stacked in sequence, with a material for forming the first sublayer including an inorganic perovskite material, and with a material for forming the second sublayer being an organic perovskite material.

Abstract: The present disclosure relates to crystalline polymorph forms of 6-[(3S,4S)-4-methyl-1-(pyrimidin-2-ylmethyl)pyrrolidin-3-yl]-3-tetrahydropyran-4-yl-7H-imidazol[1,5-a]pyrazin-8-one.

Abstract: A power system of an electric vehicle, a control method and an electric vehicle are provided. The system includes a high voltage battery, a low voltage storage battery, a main drive motor and an electronic controller therefor powered by the high voltage battery, and an auxiliary drive motor and an electronic controller therefor. The electronic controller of the auxiliary drive motor includes a high voltage electronic controller and a low voltage electronic controller. The low voltage electronic controller is configured to operate in a rotation speed closed loop mode when determining that the high voltage battery fails, and to operate in a torque control mode to charge the low voltage storage battery when the high voltage battery is normal and state of charge of the low voltage storage battery is lower than a first preset value.

Abstract: The disclosure discloses a milk protein concentrate-based microencapsulation wall material and microcapsules, and belongs to the technical field of microcapsule preparation. In the disclosure, liquid or solid microcapsules are prepared by performing cation exchange treatment on milk protein concentrates, and then using the treated milk protein concentrates as a wall material. The prepared microcapsules have good physical and chemical stability during storage, and are suitable for protecting active functional factors and to be applied in the fields of food, medicine, health care products, cosmetics, daily chemicals and the like.

Abstract: A microfluidic apparatus, method, and associated applications utilize and apply to a formalin-fixed paraffin-embedded (FFPE) tissue sample and performing a liquid-liquid extraction to remove the paraffin from the tissue sample prior to a nucleic acid purification step. A microfluidic device includes a dedicated liquid-liquid extraction process vessel, a nucleic acid purification process component, and a nucleic acid amplification reactor. A liquid-liquid extraction and nucleic acid purification kit includes a microfluidic device capable of performing both a liquid-liquid extraction process and a nucleic acid purification process, including a dedicated liquid-liquid extraction process vessel, an immiscible liquid or a precursor phase thereof disposed in the vessel, a nucleic acid purification process component, a nucleic acid amplification reactor fluidically, and a supply of reagents suitable to enable the liquid-liquid extraction process and the nucleic acid purification process.

Abstract: A paper feed mechanism includes: a paper storage to store sheets of paper; an air blowing unit disposed on each of both sides of the paper storage in a second direction orthogonal to a first direction corresponding to a paper conveyance direction, in which the air blowing unit blows air to a side end of each of the sheets of paper in the paper storage to float one or some of the sheets of paper in the paper storage; and a paper conveyance unit disposed above the paper storage, in which the paper conveyance unit holds, by suction, an uppermost sheet of paper among the floated sheets of paper, and conveys the uppermost sheet of paper. An air blowing position of the air blowing unit is changeable in the first direction according to information about the sheets of paper.

Abstract: The present disclosure proposes a keybed device, including: a keybed support; a keybed arranged on the keybed support; a key height limiting column arranged in one-to-one correspondence with each key in the keybed, and an end of the key height limiting column is fixed on a bottom surface of the corresponding key; a pressure detecting device arranged in one-to-one correspondence under each key height limiting column to detect a pressing strength of each key height limiting column; and a flexible support structure arranged below each key height limiting column and located on at least one side of each pressure detection device. The keybed device includes a flexible support structure, which can avoid false triggering of the Aftertouch effect. A same depth is pressed down from the flexible support structure to obtain a consistent Aftertouch effect, and the performance effect is controllable.