Abstract: A method for incorporating a non-operating station into an operating system in a multi-terminal flexible DC transmission system. The method includes selecting a STATCOM operation mode for the non-operating station; opening a bypass switch at an AC side and connecting a charging resistor to an AC line; closing the AC incoming-line breaker, and pre-charging a converter valve of the non-operating station through the resistor; closing the bypass switch after the pre-charging; selecting a constant-DC voltage control mode for the non-operating station to perform deblocking; controlling the difference between a non-operating station DC voltage value and an operating system direct voltage value to be within an allowable range; closing the pole-connection device at the DC side of a converter of the non-operating station; and switching the non-operating station from the STATCOM operation mode to a DC operation mode, and incorporating the non-operating station into the operating system.

Abstract: A short-distance optical amplification module and a near-eye display optical module using the same in the present invention relates to an optical amplification module applicable for short distance and an optical module using the same for near-eye display. The purpose of the present invention is to provide an optical amplification module for large-multiple amplification within a short distance (less than 5 cm) and a near-eye display optical module using the same to achieve super large field of view within a short distance (less than 3 cm). The short-distance optical amplification module in the present invention comprises a first 45 degree phase delay sheet (2), a partial-transmission and partial-reflection curved lens (4), a second 45 degree phase delay sheet (5) and a reflective polarizing sheet (6) which are sequentially arranged.

Abstract: A method for displaying an Android application image in a virtual reality system includes, but is not limited to, acquiring screen contents to be displayed. The method further includes calling a SurfaceFlinger module responsible for display synthesis in an Android system, and determining display relations of the screen contents to be displayed. The method further includes sketching textures of the screen contents to be displayed according to the determined display relations by means of an OpenGL. The method further includes establishing a grid for a left-side screen and a right-side screen of the virtual reality system, respectively. The method further includes sketching the textures to respective grids of the left-side screen and the right-side screen for displaying. These solutions solve the problem that an ordinary Android application cannot be correctly displayed in the virtual reality system, and largely increase the number of Android applications usable in the virtual reality system.

Abstract: A DC/DC converter converts an input DC voltage to an output DC voltage and charges a battery. The DC/DC converter includes: a DC/DC controller, operable for generating a driving signal according to a target value for the output voltage and a first detection signal indicative of the output voltage level to control switching circuitry and to adjust the output voltage level; and a battery charging controller, coupled to the DC/DC controller and the battery, that is operable for receiving the first detection signal indicative of the output voltage level and a second detection signal indicative of a battery voltage level, and for generating a loop control signal according to the first detection signal and the second detection signal to adjust the target value for the output voltage, wherein the difference between the first detection signal and the second detection signal indicates the amount of a battery charging current.

Abstract: The present discloses provides a decoding method, decoding apparatus and decoder for correcting burst errors. In particular, the decoding method for correcting burst errors comprises: computing an initial syndrome of a received data frame, wherein the data frame is encoded according to cyclic codes for correcting burst errors; determining error correctability of burst error contained in the data frame based on the computed initial syndrome; and processing the burst error in the data frame and outputting the processed data frame based on the determined error correctability. With the decoding method, decoding apparatus, and decoder of the present invention, error correctability of burst errors contained in a data frame can be determined before the data is send out, while having smaller decoding latency through determining the error correctability and error pattern of the burst errors contained in the data frame using initial syndrome of the data frame.

Abstract: A method for determining a reduction factor of a bearing capacity of an axial load cylindrical shell structure is described. In the method, a depression defect is introduced in a manner of applying a radial disturbance load. Then, an influence rule of a depression defect amplitude of a single point to an axial load bearing capacity is analyzed by using numerical values; then, defect sensitivity analysis is performed on depression defects of multiple points; then, experiment design sampling is performed by using load amplitude values and load position distribution as design variables; and finally, the most disadvantageous disturbance load of the multiple points that limits the defect amplitude is searched for, and a reduction factor of the bearing capacity of the axial load cylindrical shell structure is determined.

Abstract: In a controller for a DC to DC converter, PWM signal generating circuitry generates a set of PWM signals phase-shifted relative to one another, and controls states of the PWM signals according to a set of control signals. Each PWM signal of the PWM signals has an on-time state and an off-time state. Ramp signal generating circuitry, coupled to the PWM signal generating circuitry, generates a set of ramp signals having substantially the same ramp slope. Each ramp signal of the ramp signals is generated in response to detecting an on-time state of a corresponding PWM signal of the PWM signals. Additionally, a comparing circuit, coupled to the PWM and ramp signal generating circuitry, alternately compares the ramp signals with a preset reference to generate the control signals. A corresponding control signal of the control signals changes the corresponding PWM signal from the on-time state to an off-time state.

Abstract: A power tool is provided. The power tool includes a housing, a working head extended from the housing, a brushless direct current motor configured to drive the working head, a battery, an inverter and a controller. The inverter includes a plurality of semiconductor switches and configured to convert a power from the battery into an alternating current power which is coupled to the brushless direct current motor. The controller is configured to output drive signals to control the semiconductor switches of the inverter based on a magnetic field position of the rotor obtained in a sensorless way.

Abstract: A method for charging a modular multilevel converter includes: firstly, electrifying DC side of a converter; after voltages of submodules are stabilized, deblocking the converter, turning on all the submodules, then reducing the number of turned on submodules in phase unit; when over-current occurs on a bridge arm, temporarily increasing the number of turned on submodules to suppress the over-current; after the voltages of the sub-modules are stabilized, continuously reducing the number of the turned on submodules until the number of the turned on submodules in the phase unit is finally equal to the number of working submodules of the bridge arm, so as to smoothly transit to a normal operation state. The DC side is charged, such that the voltages of the submodules reach a working voltage before the converter normally operates, and an impacting current is avoided in the charging process by using a proper control strategy.

Abstract: The present discloses provides a decoding method, decoding apparatus and decoder for correcting burst errors. In particular, the decoding method for correcting burst errors comprises: computing an initial syndrome of a received data frame, wherein the data frame is encoded according to cyclic codes for correcting burst errors; determining error correctability of burst error contained in the data frame based on the computed initial syndrome; and processing the burst error in the data frame and outputting the processed data frame based on the determined error correctability. With the decoding method, decoding apparatus, and decoder of the present invention, error correctability of burst errors contained in a data frame can be determined before the data is send out, while having smaller decoding latency through determining the error correctability and error pattern of the burst errors contained in the data frame using initial syndrome of the data frame.

Abstract: The present invention provides a compound of formula I: and pharmaceutically acceptable salts thereof, wherein X, R1, R2, R3, R4, R5, L1, L2, m, and n, are as described in the specification. Such compounds are inhibitors of VPS34 and thus useful for treating proliferative, inflammatory, or cardiovascular disorders.

Abstract: A power tool and a motor drive circuit thereof are provided. The motor drive circuit includes an inverter, a controller and a current sensor. The inverter includes a plurality of semiconductor switches and configured to convert a voltage from a power supply into an alternating current for an electric motor. The controller is configured to output detecting signals and drive signals for the inverter. The current sensor is configured to sample a current flowing through the motor, the current comprising a plurality of driving current portions corresponding to the drive signals and a plurality of position detecting current portions corresponding to the detecting signals. The controller determines the drive signals at least based on the position detecting current portions of the current so as to control power modes of the semiconductor switches in the inverter in a starting stage of the motor.

Abstract: Disclosed are methods of treating neuroblastoma in a cancer patient by administration of a Trk inhibitor in combination with one more chemotherapeutic agents. Also disclosed are pharmaceutical compositions comprising a Trk inhibitor and one or more chemotherapeutic agents.

Abstract: A siphon drainage type rainfall remote measurement device with self-compensation function is provided. The bottom existence of a rain collection barrel (2) is connected via a flexible tube (14) to the bottom of a rainfall measuring tube (13) to which a siphon (5) is attached. The tube (13) and a measurement instrument (6) are installed on a holding frame (9). The instrument (6) is connected to a pressure sensor (12) and an accumulator (11) at the bottom of the tube (13). The whole device is fixed in an outer barrel (1). According to the pressure of the bottom of the tube (13), the sensor (12) measures the height of the water level in the tube (13) which is directly proportional to the rainfall. The sensor (12) signal processed by the instrument (6) is transformed into the rainfall, processed by a compensation algorithm and sent by GSM or GPRS.

Abstract: A vibration speaker is disclosed. The vibration speaker includes: a display screen including a first surface and a second surface opposite to the first surface; a vibrator disposed below the display screen with vibration direction perpendicular to the display screen; a cover including a lower cover and an upper cover assembled with the lower cover for forming a receiving space to receive the display screen and the vibrator; an elastic member comprising an inner end attached to the display screen, an outer end disposed between the lower cover and the upper cover, and a connecting part disposed between the inner end and the outer end and concaved towards the lower cover; wherein the display screen is actuated to vibrate and generate sound by the vibration of the vibrator.

Abstract: A motor assembly includes a single phase motor and a friction clutch. The single phase motor includes a stator and a rotor. The friction clutch includes a pressing member rotating with the rotor, and a connecting member to be connected to a load. wherein when the pressing member rotates, the pressing member generates an axial or radial movement to thereby exert a pressing force to the connecting member to cause the connecting member to rotate due to a frictional force generated between the pressing member and the connecting member. The present invention further provides a fluid driving device incorporating the motor assembly.

Abstract: A liquid crystal display screen detecting device is provided. The liquid crystal display screen detecting device comprises: a supporting unit configured to have two opposed support frames; a conveying unit configured to carry a liquid crystal display screen to be detected and move on the support frames; a driving unit configured to drive the conveying unit; and a detecting unit configured to detect the liquid crystal display screen to be detected.

Abstract: A method for making a cathode active material of a lithium ion battery, the cathode active material being represented by a chemical formula of Li[(Ni0.8Co0.1Mn0.1)1-xMox]O2, wherein 0<x?0.05. Source liquid solutions of Li, Ni2+, Co2+, Mn2+, and Mo6+ are mixed in stoichiometric ratio in a multi-carboxylic acid solution to form a solution. The solution is heated at 50° C. to 80° C. to form a wet gel. The wet gel is spray dried to form a dry gel. The dry gel is heated at a first temperature and then at a second temperature, the first temperature is in a range of 400° C. to 500° C., the second temperature is in a range of 750° C. to 850° C.

Abstract: According to an embodiment of the present invention, a pressure sensor includes: a pressure sensing chip, which includes a substrate, a sensing film, an insulation layer and a first bonding pad; wherein the sensing film is on the substrate, and a sagging step is formed at one side of the substrate; the insulation layer is prepared on the sensing film and the substrate; the first bonding pad is prepared on the insulation layer on a bottom surface of the step, and is connected to the region of the substrate close to the sensing film via a lead wire.

Abstract: A method for charging a modular multilevel converter includes: firstly, electrifying DC side of a converter; after voltages of submodules are stabilized, deblocking the converter, turning on all the submodules, then reducing the number of turned on submodules in phase unit; when over-current occurs on a bridge arm, temporarily increasing the number of turned on submodules to suppress the over-current; after the voltages of the sub-modules are stabilized, continuously reducing the number of the turned on submodules until the number of the turned on submodules in the phase unit is finally equal to the number of working submodules of the bridge arm, so as to smoothly transit to a normal operation state. The DC side is charged, such that the voltages of the submodules reach a working voltage before the converter normally operates, and an impacting current is avoided in the charging process by using a proper control strategy.