Abstract: The invention proposed the thermal imaging radar includes of main components: Assembly pedestal, Assembly rotary shaft, and Assembly housing. Electronic circuits, encoders, mechanisms, motor are optimized arranged and scientifically designed the layout space and the weight of the structure. This device is compact for camouflage purposes, easy to assemble or disassemble, and waterproof. The invention's products can be applied in automatic security station, produces 360-degree panoramic imaging of the continuously day and night for surveillance area, detects and tracks moving objects captured by the thermal sensor. Furthermore, The product is also applicable for monitoring the ambient temperature in large areas, localizing high-temperature areas to recognize and warn the possible explosions.

Abstract: An Automated Analysis and Warning of Optical Transmission (AWOT) between BBU unit and RRU of radio transmitting station accurately and quickly identifies errors on an optical transmission line, thereby reducing costs in terms of labor and equipment, and at the same time reducing service downtime of mobile communication systems.

Abstract: A broadband dual-polarized antenna integrated high-performance balun. The antenna structure consists of three main parts: radiator, feeding structure and reflector. The radiation element consists of four radiation parts with petal shape, forming two pairs of orthogonal dipole antennas. The feeding structure consists of four circuit boards with separated lines, forming resonant structures corresponding to a balance transformer. The reflector enables to direct the beam, increasing the antenna's orientation.

Abstract: The method of fragmentation of large files applied to the problem of updating phone numbers according to the proposed invention helps to solve the problem of increasing the speed of reading/writing/updating/deleting large files, solving solving issues of getting a high load of interactive examination with a data file sized in the millions of records, including the steps: step 1: read the configuration data from the table in the database, save the data structure for processing; step 2 receive the request; step 3: read the file and split the work; step 4: handle concurrent interaction with sub-files.

Abstract: The invention proposes a four-port coupler using micro-strip line in combination with ultra-wide-band compensation circuits. It can be applied for communication systems or information machine systems. The main feature of the invention is the structure and the distribution of the components in the compensation circuit to reduce the size of the coupler. The proposed coupler includes: microstrip directional coupler and compensation circuits, in which the microstrip directional coupler consists of one main line and two secondary transmission lines; the main transmission line has two ports: input and output ports; each secondary is connected to a load and a compensation circuit. The compensation circuit is composed of a low-pass filter and two parallel attenuation regulator circuits.

Abstract: The target density prediction method by area comprises of 4 main steps: Step 1: preparing training dataset; Step 2: analyzing time series characteristics of training dataset; Step 3: training the autoregressive integrated moving average model; Step 4: predicting the target density over a defined time period in the future. The chosen method technically analyzes the time series characteristics of historical dataset by monitoring areas, and determines the cycle property, parameters and the autoregressive integrated moving average model to predict the number of targets that have high probability appearing in monitoring area at some point in the future.

Abstract: The invention proposes the two-axis direct drive mechanical mechanism of a multi-sensor observation device for unmanned aerial vehicles. This is a mechanical mechanism to perform rotate pan-tilt axis by direct drive motor. This mechanism include main components: assembly pedestal, assembly pan-axis and assembly tilt-axis. Electronic circuits, encoders, mechanism, motor are optimized arranged and scientifically designed to the layout space and the weight of the structure. This mechanism can integrate optical sensors such as infrared cooling cameras, high resolution camera, laser rangefinder.

Abstract: This invention proposes the aerodynamic designing method for the central section of small size gas turbine engine type and it includes the following 8 steps: 1st step: checking to confirm if compressor outlet air meets demand specified by the central section; 2nd step: estimating the inner casing diameter based on practical experience; 3rd step: estimating the outer casing diameter; 4th step: estimating the combustor dome height and combustor length; 4th step: estimating the combustor dome height and combustor length; 5th step: estimating the combustor inner and outer liner diameters; 6th step: estimating the exit inner and exit outer diameters of the pre-diffuser; 7th step: estimating the dump gap; 8th step: verifying rotordynamic properties to determine if the shaft diameter assumption starting in the 2nd step is good enough.

Abstract: This invention refers to the method of modeling and calculating aerodynamic characteristics of a multi-stage axial compressor using commercial software, method to identify the stable working range of module. The method includes step 1: object modeling; step 2: constructing the calculation model; step 3: problem solving. Step 4: results analysis.

Abstract: A method of designing fuel mist atomizing device in gas turbine engines with spiral vortex chamber. The design method includes the following steps: step 1: determining the required information; step 2: designing, calculating and selecting geometrical dimension parameters of the mist atomizing device; Step 3: Generating 3D model of the mist atomizing device; Step 4: Performing design iteration and optimization.

Abstract: A method for building a single-spool jet engine model consisting of five detailed steps: step 1: determining the structure of a turbojet engine to be modeled; step 2: Determine the thermodynamic information of the engine in detail; step 3: Put the engine information into the corresponding component module blocks, model structure according to the multi-loop algorithm and test the engine at the design point in a steady state; step 4: From the entire engine state at the starting point, save the sample as input to the dynamic model, describe the engine operation between the two stable operating points; step 5: Compare test data to make model errors and change unknown values to complete the model. With open source code for customizing and upgrading engine component modules, an open environment for research and development is provided, intended for research subjects of gas turbine engines used in industrial as well as aviation.

Abstract: The invention provides a solution to amplify the airflow for testing purpose; this solution could be conventionally set up and configured with simple components or popular industrial systems. It is particularly interesting for small facilities/companies with limited resources or demanding only a low investment. This system is consisted of a high pressure air driving duct, an air mixing duct, a pressure reduction valve and a safety valve, ducts' size can be configured or changed to adapt the testing configuration. All components and systems are connected and attached to each other by stainless steel flanges and seals to avoid leakage and corrosion.

Abstract: This invention refers to hybrid coupler with the sum port and difference port located on the same side. The hybrid coupler can be efficiently integrated into the high frequency circuit with its simple structure, using common material. To achieve this purpose, the hybrid coupler in this invention consists of the following parts: sum port, difference port, output port 1, output port 2, connection line 1, connection line 2 and microstrip line.

Abstract: The weighted load balancing method on data access nodes ensures the ability to horizontally scale the data access system, the load handling capacity of the system is increased linearly according to the number of data access nodes. The proposed method includes the following steps: step 1: update the routing table, when adding, removing nodes or changing nodes' weight, move virtual nodes from node having decreased number of virtual nodes to node having increased number of virtual nodes; step 2: store old routing table on array Ai and new routing table on array A2; step 3: block access to records that need to be moved; step 4: copy records from old node to node; step 5: perform read/write access using data partitioning method with new routing table A2; step 6: clean duplicated records.

Abstract: The weighted load balancing method on data access nodes ensures the ability to horizontally scale the data access system, the load handling capacity of the system is increased linearly according to the number of data access nodes. The proposed method includes the following steps: step 1: update the routing table, when adding, removing nodes or changing nodes' weight, move virtual nodes from node having decreased number of virtual nodes to node having increased number of virtual nodes; step 2: store old routing table on array A1 and new routing table on array A2; step 3: block access to records that need to be moved; step 4: copy records from old node to node; step 5: perform read/write access using data partitioning method with new routing table A2; step 6: clean duplicated records.

Abstract: The invention presents a system optimizing control coefficients of flight object under complex environmental effects using hybrid Fuzzy Logic and PID variant controller. The proposed system includes: target module, seeker module, guidance module, control module, dynamics module. The fuzzy logic controller is applied to determine the parameters coefficients of a proportional integral derivative (PID) based on the effect of these coefficients on the system response. The control module is less affected by the accuracy of the mathematical model and can perform well in environments with impact noise.

Abstract: A power control and correction method capable of adapting to each type of transmission environment, addressing interference problems of user devices in the network, and ensuring good signal quality for signal decoding. The method adjusts and controls the receiver power adaptation according to the transmission environment in the eNodeB LTE system.

Abstract: The invention proposes a method of calculating aerodynamic derivatives for flight vehicle including the following steps: step 1: simulation and calculation of static aerodynamic coefficients for flight vehicle; step 2: simulate forced harmonic oscillation, specifically: create the harmonic oscillation profile by channels and determine the combined derivative according to the pitch, roll and yaw channels for at least 3 different frequencies; step 3: calculate the aerodynamic derivatives for each channel, specifically: establish a mathematical model describing the forced harmonic oscillations according to the channels, developing an optimal program to minimize the cost function and estimate parameters.

Abstract: The invention refers to the parallel calculation method for polarization coding (PCPE) for channel coding technique in 5th next generation mobile communication systems which includes to split N-bits input sequence into X parallel streams, each stream has Y bits; to multiply Y bits at each stream by the columns of the Kronecker matrix GY, the results are displayed in rows according to the principle of bit elimination; and to multiply the matrix obtained with the columns of the Kronecker matrix GX according to the sample repeat and scalar multiplication. In addition, the invention also refers to the polarization coding system according to the Parallel Computation for Polarization Encoding (PCPE) for the channel coding technique in the 5th next generation mobile communication system.

Abstract: The air eliminator valve helps to eliminate air in the plastic resin used for composite products manufacturing. During operation, it continuously eliminates the air bubbles in the plastic resin running through the valve, and then transfers the filtered plastic resin into the mold. The design of the air eliminator valve consists of: inlet, inlet lock, air vent, upper cover, main body, ultrasonic generator, outlet lock and outlet. In which, the ultrasonic generator plays a role in generating ultrasonic waves to the plastic resin in the valve body that allows speeding up the air releasing process out the plastic resin. The air content in the valve could go out through the air vent on the upper cover, its status “open/close” is controlled by airlock with automatic response mechanism.