Abstract: A perpendicularly magnetized magnetic tunnel junction (p-MTJ) is disclosed wherein a boron containing free layer (FL) is subjected to a plasma treatment with inert gas, and a natural oxidation (NOX) process to form B2O3 before overlying layers are deposited. A metal layer such as Mg is deposited on the FL as a first step in forming a Hk enhancing layer that increases FL perpendicular magnetic anisotropy, or as a first step in forming a tunnel barrier layer on the FL. One or more anneal steps are essential in assisting B2O3 segregation from the free layer and thereby increasing the FL magnetic moment. A post-oxidation plasma treatment may also be used to partially remove B2O3 proximate to the FL top surface before the metal layer is deposited. Both plasma treatments use low power (<50 Watts) to remove a maximum of 2 Angstroms FL thickness.

Abstract: A method for charging a service robot and a service robot are disclosed. The method comprises: collecting an audio signal generated by a sound source of a charging pile; determining a direction of the sound source according to the collected audio signal; controlling a robot main body to move toward the direction of the sound source, to shorten a distance between the robot main body and the charging pile; judging whether the infrared receiver array has received an infrared pulse signal emitted by the infrared emitter array of the charging pile; and when the infrared receiver array has received the infrared pulse signal, controlling the robot main body to move toward a direction of the charging pile according to the infrared pulse signal, to engage a charging component of the robot main body with a charging contact element of the charging pile.

Abstract: The present disclosure relates to a method, apparatus and computer program product for managing datasets. According to example implementations of the present disclosure, there is provided a method for managing datasets. In the method, a first dataset comprising a first number of data elements and a second dataset comprising a second number of data elements may be obtained. The first number may be compared with the second number. One of the first dataset and the second dataset may be selected as a search dataset and the other may be selected as a traverse dataset based on a comparison result. The search dataset may be searched for a candidate data element, here the candidate data element has an association relation with a data element comprised in the traverse dataset. Further, there is provided an apparatus and computer program product for managing datasets.

Abstract: A location engine that estimates the barometric pressure measurement bias of a wireless terminal, resulting in an improved estimate of elevation of the wireless terminal. The location engine generates an estimate of measurement bias by comparing the barometric pressure measured by the wireless terminal while at that elevation and the barometric pressure that corresponds to an estimated elevation of the wireless terminal when it made the pressure measurement (i.e., the expected pressure). The estimated elevation is based on an inferred above-ground height and the local terrain elevation, and the expected pressure is based on the measurement of barometric pressure at the pressure reference and the estimated elevation. The location engine infers the height based on various techniques disclosed herein. The location engine can use the measurement bias to adjust subsequent pressure measurements reported by the wireless terminal, in order to generate an improved estimate of elevation of the wireless terminal.

Abstract: A fabrication process for an STT MTJ MRAM device includes steps of cooling the device at individual or at multiple stages in its fabrication. The cooling process, which may be equally well applied during the fabrication of other multi-layered devices, is demonstrated to produce an operational device that is more resistant to adverse thermal effects during operation that would normally cause a similar device not so fabricated to lose stored data and otherwise fail to operate properly.

Abstract: The present disclosure provides a lens combination and an illumination device adopting the lens combination, where, the lens combination configured for accommodation at least a first light source and a second light source, includes: a first lens, including a first light incident surface, a first light emergent surface and a first accommodation space located on a side of the first light incident surface and configured for accommodating the first light source, where the first light incident surface and the first light emergent surface are of a curved surface shape; and a second lens, including a second light incident surface, a second light emergent surface, and a second accommodation space located on a side of the second light incident surface and configured for accommodating the second light source, where the second light incident surface and the second light emergent surface are of a curved surface shape.

Abstract: The present disclosure provides a LED lighting device including a housing, a light source component, an optical lens that is located above the light source component and is configured to distribute light for the light source component, a reflector in contact with the optical lens, and a surface ring assembled on the reflector; and the housing, the light source component, the optical lens, the reflector, and the surface ring are sequentially arranged; the surface ring is fixed on the housing to delimit a receiving chamber, the light source component, the optical lens, the reflector are all located in the receiving chamber; LED light source particles are located a light source base plate included in the light source component; light of the LED light source particles sequentially passes through the optical lens and the reflector, and then emits through a light exit of the LED lighting device.

Abstract: This utility model discloses a manufacturing device of a dental floss pick, which comprises of an injection molding module, a cutting module, a carrying module and a storage module. The injection molding module is provided with a material chamber, a motor, a rotating shaft and screw, and heating is arranged on the outer periphery of the lower end of the material chamber. A nozzle is arranged at a lower end of the material chamber, an upper mold and a lower mold are arranged under the nozzle, and a shape forming mold is arranged between the upper mold and the lower mold. The cutting module encompasses of cutters directly under the blade cutter; a clamping robot is arranged between the injection molding module and the cutting module, and a suction cup robot is arranged between the cutting module and the storage module. Through the whole process, the automated carrying module is used to carry out the handling and stacking operation of the product.

Abstract: A magnetic tunnel junction is disclosed wherein the reference layer and free layer each comprise one layer having a boron content from 25 to 50 atomic %, and an adjoining second layer with a boron content from 1 to 20 atomic %. One of the first and second layers in each of the free layer and reference layer contacts the tunnel barrier. Each boron containing layer has a thickness of 1 to 10 Angstroms and may include one or more B layers and one or more Co, Fe, CoFe, or CoFeB layers. As a result, migration of non-magnetic metals along crystalline boundaries to the tunnel barrier is prevented, and the MTJ has a low defect count of around 10 ppm while maintaining an acceptable TMR ratio following annealing to temperatures of about 400° C. The boron containing layers are selected from CoB, FeB, CoFeB and alloys thereof including CoFeNiB.

Abstract: An initialization process is disclosed for a perpendicular magnetic tunnel junction (p-MTJ) wherein the switching error rate is reduced from a typical range of 30-100 ppm to less than 10 ppm. In one embodiment, an in-plane magnetic field is applied after a final anneal step is performed during memory device fabrication such that all magnetizations in the free layer, and AP1 and AP2 pinned layers are temporarily aligned “in-plane”. After the applied field is removed, interfacial perpendicular magnetic anisotropy (PMA) at a tunnel barrier/AP1 interface induces a single AP1 magnetic domain with a magnetization in a first vertical direction. Interfacial PMA at a FL/tunnel barrier interface affords a single FL domain with magnetization in the first direction or opposite thereto. AP2 magnetization is opposite to the first direction as a result of antiferromagnetic coupling with the AP1 layer. Alternatively, a perpendicular-to-plane magnetic field may be applied for initialization.

Abstract: A data-processing system that estimates the particular building floors that are present in a particular building based on differences in barometric pressure measurements provided by wireless terminals. A wireless terminal can report one or more barometric pressure measurements at the ground floor of a building and one or more pressure measurements at one or more above- or below-ground floors, or “non-ground” floors. The data-processing system receives the pressure measurements and uses the difference in the pressure measurements to determine a change in height between the ground floor and a non-ground floor. When the system collects enough data from many wireless terminals, it is able to identify the floors that are present in a particular building and their non-ground heights. Then, when an estimate of the vertical location of a wireless terminal is provided to a location application, the system is able to provide the estimate in terms of building floor.

Abstract: Embodiments of the present invention disclose an alarm information processing method, including: acquiring, by an EMS, a first alarm information set reported by a VNFM, where the first alarm information set is generated after the VNFM performs correlation analysis on at least one piece of NFVI alarm information and at least one piece of VIM alarm information; acquiring, by the EMS, a second alarm information set reported by a VNF, where the second alarm information set includes at least one piece of VNF alarm information; and performing, by the EMS, correlation analysis on the first alarm information set and the second alarm information set, and dispatching a configured work order for alarm information that has a correlation relationship. By using the present invention, a cross-layer association between alarm information can be implemented to reduce a quantity of work orders.

Abstract: An unmanned aerial vehicle (UAV) communication method and device and a UAV are disclosed.

Abstract: A location engine that generates an estimate of the measurement bias of the pressure sensor in a wireless terminal. The estimate is determined from a probability distribution characterized as having a flat top with exponentially decaying sides. The probability distribution is generated by inferring i) a range of elevations within which the wireless terminal is most likely present, wherein the elevations have associated barometric pressures, and ii) a corresponding range of measurement biases based on an inferred range of the barometric pressures. The location engine updates the probability distribution over time. The location engine makes a single estimate of measurement bias available by determining a mean of the updated probability distribution, such as an average of the low and high endpoints that define the flat top. Subsequently, the location engine generates an estimate of the elevation of the wireless terminal by accounting for the estimate of measurement bias.

Abstract: A method and device for sound source positioning using a microphone array. The method comprises: determining a horizontal axis that a microphone array rotates around as a reference axis; calculating, according to a sound emitted by a sound source that is collected by the microphone array, to obtain a first sound source estimated value indicating a sound source position in a three-dimensional space; acquiring an inclination angle between a plane in which the microphone array is located when it is rotating and a horizontal plane in which the reference axis is located; and according to the first sound source estimated value and the inclination angle, calculating out a second sound source estimated value on a horizontal plane corresponding to the first sound source estimated value, and using the second sound source estimated value as the determined sound source position.

Abstract: Method of making soft interdental brushes, which relates to the field of daily necessities and solves the problems of unsightly fracture points and causing skin scratches at the fracture points with the current producing process. The method includes forming a receptacle frame with technical points as follows: a receptacle plate for organizing the brushes and receiving columns for fixing the brushes, the receptacle plate and the receptacle columns are fixedly attached; The method also adopts an interference fit approach to collect the brushes through the receptacle frame, meanwhile, the material after the injection will be cut off once the brushes are received by the receptacle frame. Compared with the traditional technology, the utility model makes the soft interdental brush more convenient to pick off, furthermore, there will be no residual connecting strips on the brush, so that the brush will not cut the skin while be more artistic.

Abstract: The present disclosure provides a centralized charging cabinet, including: a charging cabinet, provided with an isolation area and a charging area therein; an isolation transformer, provided in the isolation area; and at least one charging unit, provided in the charging area, where each of the charging unit is electrically connected to a secondary winding of the isolation transformer through a plurality of first connection structures, and the plurality of first connection structures are located at a back region of the charging area. In the centralized charging cabinet, the isolation transformer is provided in the isolation area inside the charging cabinet, the charging unit is provided in the charging area inside the charging cabinet, which realizes a centralized layout of the isolation transformer and the charging unit and improves the space utilization.

Abstract: The invention provides a water-cooling power supply module, comprising: a water-cooling plate; a power supply module disposed on the water-cooling plate, comprising: a capacitor module, a power module, a plurality of inductor modules and input/output filter module arranged in sequence on the surface of the water-cooling plate, and a control module disposed above the capacitor module or the power module at least used for controlling the power module; wherein water channels in the water-cooling plate are designed such that the cooling water flows through the power module, the inductor modules and the input/output filter module in sequence.

Abstract: Circuits and methods for programming a MTJ stack of an MRAM cell minimizes a ferromagnetic free layer or pinned layer polarization reversal due to back-hopping. The programming begins by applying a first segment of the segment of the write pulse at a first write voltage level for a first time period to program the MTJ stack. A second segment of the segment of the write pulse at a second write voltage level that is less than the first write voltage level is applied to the magnetic tunnel junction stack for a second time period to correct the polarization of the MTJ when the MTJ stack has reversed polarization during the first time period. The second segment of the segment of the write pulse may be a ramp, or multiple ramps, or have a quiescent period between it and the first segment of the write pulse.