Abstract: An active voltage drop control-type pulse power generator includes power stages, a power inverter, a power loop, a control inverter, a control loop, and a compensation unit. The power stages include power cells connected in series. Each power cell includes a switch and a capacitor connected in series, a driver for driving the switch, a bypass diode connected to both ends of the switch, and a rectifying diode connected to both ends of the capacitor. The power inverter charges the capacitor via the power loop and the rectifying diode inside each power cell. The control inverter provides a control signal for the switch via the control loop and the driver inside each power cell. The compensation unit is connected to one of the power cells and generates a compensation voltage for compensating for a voltage drop at a load according to a voltage detected in real-time from the power cell.

Abstract: A set of antenna geometries for use in integrated arrays at terahertz frequencies are described. Two fabrication techniques to construct such antennas are presented. The first technique uses an advanced laser micro-fabrication, allowing fabricating advanced 3D geometries. The second technique uses photolithographic processes, allowing the fabrication of arrays on a single wafer in parallel.

Abstract: A method for preparing pimaric acid type resin acids includes: step (1) adding refined resin acid, turpentine, or rosin along with maleic anhydride at a mass ratio of 1:0.3-1.5 into a reaction bottle, dissolving the ingredients into a C1-C10 lower fatty acid solvent, the mass ratio of the C1-C10 low fatty acid to refined resin acid is 0.05-30:1, then carrying out additional reaction by heating directly or with assistance of a microwave, subsequently cooling, crystallizing, filtering, and washing; and step (2) combining the filtrates collected in step (1), stripping the solvent by vacuum distillation to obtain pimaric acid type resin acid coarse product, dissolving the resulting coarse product in NaOH aqueous solution to prepare aqueous solution of pimaric acid type resin acid salt, adjusting the pH to 6-14 with a mineral acid or an organic acid, and either directly purifying or acidifying followed by purifying to obtain the final product.

Abstract: Disclosed is an efficient carrier for gene delivery to cells based on PCR. The PCR-based gene delivery carrier includes: a shell composed of neutral liposomes; and template DNA and PCR components including polymerase, dNTPs and primers for amplification of the template DNA by PCR, within an inner space defined by the shell. The gene delivery carrier enhances the gene loading efficiency of neutral liposomes without cytotoxicity. Further disclosed is a method for preparing the gene delivery carrier.

Abstract: Disclosed is a method of producing low oxygen-content molybdenum powders by reducing molybdenum trioxide, which includes charging a first reducing agent and the molybdenum trioxide, which are in the direct contact with each other on a micro-sieve on an upper portion of a bracket in a body, charging a second reducing agent in the bracket under the micro-sieve, coupling the body with a cover to close the body, and performing a reduction reaction by raising an internal temperature of the body by performing the first reduction reaction due to direct contact between the first reducing agent and the molybdenum trioxide, and performing the second reduction reaction due to evaporation of the second reducing agent. The first and second reduction reactions are performed at a temperature in a range of 550° C. to 650° C., and a temperature in a range of 1000° C. to 1200° C., respectively.

Abstract: An apparatus and a method for constructing a multilingual acoustic model, and a computer readable recording medium are provided. The method for constructing a multilingual acoustic model includes dividing an input feature into a common language portion and a distinctive language portion, acquiring a tandem feature by training the divided common language portion and distinctive language portion using a neural network to estimate and remove correlation between phonemes, dividing parameters of an initial acoustic model constructed using the tandem feature into common language parameters and distinctive language parameters, adapting the common language parameters using data of a training language, adapting the distinctive language parameters using data of a target language, and constructing an acoustic model for the target language using the adapted common language parameters and the adapted distinctive language parameters.

Abstract: A method of estimating a quantization table for an image block compressed in image processing is provided. The method including performing a first quantization using a table dictionary that includes a number of candidate quantization tables for the compressed image block; performing edge-related filtering on the compressed image block and performing a second quantization using the table dictionary for the filtered compressed image block; and estimating a quantization table for the compressed image block based on energy costs of the first-quantized image block and the second-quantized image block.

Abstract: A sensing device having multiple sensing units, a sensing method, and a recording medium thereof are provided. A system includes a plurality of sensing units, an operational module, a selection module, and a sampling module. The selection module is connected to a target sensing unit according to a selection signal provided by the operational module, and obtains a sensing signal provided by the target sensing unit. The sampling module obtains the sensing signal from the selection module.

Abstract: Electromagnetic digital materials are made up of a set of voxels, some of which are made from electromagnetically active materials. Each voxel is adapted to be assembled into a structure according to a regular physical geometry and an electromagnetic geometry, and a majority of the voxels in the set are reversibly connectable to other voxels. Voxels in the set may differ in material composition or property from other voxels in the set. Voxels may be arranged into multi-voxel parts that are assembled into the structure according to a regular physical geometry and the electromagnetic geometry. Electromagnetic structures may be made from the electromagnetic digital material, and may be fabricated by an automated process that includes assembling a set of voxels by reversibly connecting the voxels to each other according to a regular physical geometry and an electromagnetic geometry and assembling the reversibly connected voxels into the electromagnetic structure.

Abstract: An apparatus for grouping a plurality of stations in a multi-transmission environment includes an SNR (Signal to Noise Ratio) measuring unit configured to measure SNR values of the stations existing in the multi-transmission environment. Further, the apparatus includes a grouping unit configured to group the stations into several subgroups depending on the SNR values, wherein a leader is defined in each subgroup. Furthermore, the apparatus includes a control unit configured to determine an MCS (Modulation and Coding Scheme) intended for each subgroup and form different A-MPDU (Aggregated MAC Protocol Data Unit) for each subgroup separately to send to each subgroup in a multicast transmission.

Abstract: An apparatus of producing a carbonate mineral includes a first reaction device including a fluid path along which an ion exchange solution moves; a cation exchange medium disposed in the fluid path, the cation exchange medium containing an alkaline earth metal; a second reaction device accommodating a sodium hydroxide aqueous solution and receiving the ion exchange solution containing an alkaline earth metal ion from the first reaction device; and a carbon dioxide supplying device supplying a carbon dioxide to the second aqueous solution.

Abstract: A stretchable photovoltaic apparatus according to the present invention includes: a stretchable substrate including islands protruded from a base such that the islands are separated by a trench, and a notch formed in an edge of each of the islands; a photovoltaic cell mounted on the stretchable substrate; and an interconnector of which at least a portion is positioned inside the notch, the interconnector electrically connecting the neighboring photovoltaic cells in one pair. According to the present invention, a semiconductor device may be configured in the form of a stretchable array. Therefore, the present invention is expected to be applied to various industrial fields such as a solar cell field, a display field, a semiconductor device field, a medical field, a clothing field, a measurement field, and a filming field.

Abstract: This present inversion relates to a detection system and detection method of distributed generation islanding based on power frequency carrier. The system includes a power frequency carrier signal generating device near the terminal power distribution substation, a power frequency carrier signal detection device in distributed power grid; the power frequency carrier signal generating device is connected to the substation bus through a signal coupling transformer; the power frequency carrier signal generating device is connected with signal coupling transformer though phase A, B C live wires and the N middle wire, that results in the signal can be send by anyone signal phase, any two phases parallel way or three phases parallel way. The power frequency carrier signal detection device is connected with the low voltage power network though phase A, B and C live wires and the N middle wire.

Abstract: A rapidly dissolving film is provided for delivery of an active agent to a moist body surface, e.g., mucosal tissue. The film comprises a film-forming binder, a rapidly dissolving polymeric material, and an active agent.

Abstract: A vehicle data processing device and a vehicle data processing method thereof are provided. The vehicle data processing device gets vehicle data items of a vehicle and creates a vehicle data menu according to the vehicle data items. The vehicle data processing device transmits a different inquiry packet to the vehicle according to the vehicle data menu at a query time interval. The vehicle data processing device receives a plurality of reply packets from the vehicle, wherein each of the reply packets corresponds to each of the inquiry packets. The vehicle data processing device analyses the reply packets to generate a plurality of readable vehicle data of the vehicle, and stores the readable vehicle data. The vehicle data processing device supplies the vehicle data menu to user terminals and processes the vehicle data queries from the user terminals to provide the readable vehicle data thereto.

Abstract: An electric meter (EM) network system, an EM node and a broadcasting method thereof are provided. The EM node, which is electrically connected to a power supply loop, stores a layer number and a total layer number. When the power supply loop recovers from a power disconnect condition to a power supplying condition, the EM node obtains a waiting time according to a difference value between the layer number and the total layer number, and broadcasts a route message after the waiting time.

Abstract: A multipath switching system comprising of an adjustable phase shift array includes, an adjustable phase shift array module and a control module. The adjustable phase shift array module receives a radio-frequency (RF) signal, and includes at least one RF switch, at least one coupler and at least one phase shifter. The at least one RF switch, the at least one coupler and the at least one phase shifter form a number of transmission paths. The transmission paths respectively produce the processed transmission RF signals corresponding to different phase shifts to an antenna array. The control module controls the at least one RF switch and the at least one phase shifter of the adjustable phase shift array module, so that the antenna array radiates a wireless signal whose direction is corresponding to a predetermined angle in space polar coordinates.

Abstract: A method for determining a status of at least one machine includes the following steps: a processing unit is utilized to receive and record spindle load values of the spindle in a period of time to generate a spindle load record of the spindle, and to determine if a preset condition is matched according to the spindle load record. When the preset condition is matched, the processing unit is utilized to determine a present category corresponding to the spindle load record of the spindle, and to obtain parameter-to-be-collected information corresponding to the present category. The processing unit is utilized to obtain at least one value of at least one collected parameter of the at least one machine according to the parameter-to-be-collected information corresponding to the present category, and to determine a status of the at least one machine according to the obtained value of the at least one collected parameter.

Abstract: The object of the present invention is to provide a calcium phosphate-collagen fiber composite which has an excellent mechanical property, can induce bone replacement by rapid bone remodeling, and can be used in a high-load region. The object can be solved by a porous composite comprising a calcium phosphate crystal and a collagen fiber at a weight ratio of 80:20 to 20:80, wherein (1) a bioabsorbability of the porous composite is graded, and (2) the density of the porous composite determined by gravimetric method is 300 to 1500 mg/cm3.

Abstract: A method of decreasing the light-off time of a catalytic exhaust aftertreatment device, using exhaust gas recirculation (EGR) in a turbocharged internal combustion engine. The engine has at least one “dedicated EGR cylinder”, whose entire exhaust is recirculated back to all the engine cylinders. The dedicated EGR cylinder(s) may be operated to produce a differently compositioned exhaust gas than the other cylinders. During light-off, EGR gas is optimized for heat, diverted from the EGR loop and routed to a point directly upstream the aftertreatment device.