Abstract: A method for manufacturing a semiconductor device includes forming a first dielectric layer over a semiconductor fin. The method includes forming a second dielectric layer over the first dielectric layer. The method includes exposing a portion of the first dielectric layer. The method includes oxidizing a surface of the second dielectric layer while limiting oxidation on the exposed portion of the first dielectric layer.

Abstract: A method for selecting a plurality of base stations to position a mobile device is provided. The method includes selecting a plurality of base station sets from the plurality of base stations, wherein each of the plurality of base station sets corresponds to a distance matrix, utilizing a first artificial neural network (ANN) unit to select a predefined number of the plurality of base station sets from the plurality of base station sets according to a plurality of distance matrixes corresponding to the plurality of base station sets; and utilizing a second ANN unit to position the mobile device according to the predefined number of the plurality of base station sets.

Abstract: A method utilized in a wireless communication system having a mobile device and a plurality of base stations includes obtaining a geometric matrix according to a plurality of relative distances between the mobile device and the plurality of base stations, obtaining a weighted matrix according to the mobile device and the plurality of base stations, obtaining a weighted geometric dilution of precision according to the weighted matrix and the geometric matrix, so as to obtain a weighted geometric dilution of precision closed form, and choosing a plurality of selected base stations from the plurality of base stations according to the weighted geometric dilution of precision closed form to position the mobile device.

Abstract: A method for positioning a mobile device in a wireless wide area network (WWAN) is provided. The method includes determining three measurement circles according to coordinates of three base stations and respectively calculating radiuses of the three measurement circles and distances between the three base stations. The method uses genetic algorithm to derive the best solution of a plurality of variables of an object function and estimates the position of the mobile device according to the best solution. Accordingly, non-line-of-sight (NLOS) errors are reduced, and more accurate positioning can be provided.

Abstract: A method utilized in a wireless communication system having a mobile device and a plurality of base stations includes obtaining a geometric matrix according to a plurality of relative distances between the mobile device and the plurality of base stations, obtaining a weighted matrix according to the mobile device and the plurality of base stations, obtaining a weighted geometric dilution of precision according to the weighted matrix and the geometric matrix, so as to obtain a weighted geometric dilution of precision closed form, and choosing a plurality of selected base stations from the plurality of base stations according to the weighted geometric dilution of precision closed form to position the mobile device.

Abstract: A method for selecting a plurality of base stations to position a mobile device is provided. The method includes selecting a plurality of base station sets from the plurality of base stations, wherein each of the plurality of base station sets corresponds to a distance matrix, utilizing a first artificial neural network (ANN) unit to select a predefined number of the plurality of base station sets from the plurality of base station sets according to a plurality of distance matrixes corresponding to the plurality of base station sets; and utilizing a second ANN unit to position the mobile device according to the predefined number of the plurality of base station sets.

Abstract: A method for positioning a mobile device in a wireless wide area network (WWAN) is provided. The method includes determining three measurement circles according to coordinates of three base stations and respectively calculating radiuses of the three measurement circles and distances between the three base stations. The method uses genetic algorithm to derive the best solution of a plurality of variables of an object function and estimates the position of the mobile device according to the best solution. Accordingly, non-line-of-sight (NLOS) errors are reduced, and more accurate positioning can be provided.

Abstract: A wireless communication positioning method is disclosed for obtaining an estimated position of a mobile device. The wireless communication positioning method includes obtaining an angle of arrival for the mobile device relative to one of a plurality of base stations and obtaining a line of arrival angle extended along the angle of arrival from the one of the plurality of base stations, obtaining a plurality of measured distances of the plurality of base stations relative to the mobile device and obtaining a plurality of measured circles corresponding to the plurality of measured distances, generating a plurality of position lines according to the plurality of measured circles, and calculating the estimated position of the mobile device according to the plurality of position lines and the line of arrival angle.

Abstract: A transmitting terminal includes a signal processing unit, MS RF units, MT transmit antennas and a switch unit. The signal processing unit has K precoders for precoding K data streams corresponding to K receiving terminals. The MS RF units output MS up-converted transmit signals based on the precoded K data streams. The switch unit is coupled between the RF units and the transmit antennas and controlled by the signal processing unit for selection of the transmit antennas. The signal processing unit sets the MT transmit antennas as a universal set, calculates a plurality of sum rates corresponding to a plurality of subsets, each subset excluding an ith transmit antenna, according to channel state information, selects the subset with a maximum sum rate as the universal set of a next iteration, and then repeats the calculating and selecting steps until the subset with the maximum sum rate remaining MS transmit antennas.

Abstract: A transmitting terminal includes a signal processing unit, MS RF units, MT transmit antennas and a switch unit. The signal processing unit has K precoders for precoding K data streams corresponding to K receiving terminals. The MS RF units output MS up-converted transmit signals based on the precoded K data streams. The switch unit is coupled between the RF units and the transmit antennas and controlled by the signal processing unit for selection of the transmit antennas. The signal processing unit sets the MT transmit antennas as a universal set, calculates a plurality of sum rates corresponding to a plurality of subsets, each subset excluding an ith transmit antenna, according to channel state information, selects the subset with a maximum sum rate as the universal set of a next iteration, and then repeats the calculating and selecting steps until the subset with the maximum sum rate remaining MS transmit antennas.

Abstract: An emulsifier system includes a mixing pump, a water source, a water intake regulator for regulating the flow rate of water supplied by the water source to the mixing pump, an air intake regulator for regulating the flow rate of air being supplied to the mixing pump for enabling the mixing pump to output a high pressure flow of mixed fluid and gas, and an emulsifier for emulsifying the high pressure flow of mixed fluid and gas outputted by the mixing pump by means of a cavitation effect.

Abstract: An emulsifier system includes a mixing pump, a water source, a water intake regulator for regulating the flow rate of water supplied by the water source to the mixing pump, an air intake regulator for regulating the flow rate of air being supplied to the mixing pump for enabling the mixing pump to output a high pressure flow of mixed fluid and gas, and an emulsifier for emulsifying the high pressure flow of mixed fluid and gas outputted by the mixing pump by means of a cavitation effect.

Abstract: The present invention relates to an energy source device, which includes a potential energy change device, an energy acquiring device and an object transfer device. The potential energy change device is prefilled with material having density greater than air to enable more than one object having a density smaller than the density of the material to gain potential energy from the density difference between the material and the objects. Furthermore, the objects are moved to the energy acquiring device using the object transfer device, and weight of each of the objects themselves and the principle of kinetic and potential energy transformation are used to acquire a predetermined potential energy difference, which is transformed into energy. Accordingly, basic principles of physics are used to acquire needed energy from the predictable energy produced by buoyancy and gravitational acceleration, thereby achieving environmental protection and meeting the objective of providing economic benefit.

Abstract: A fluorescent lamp holder combination device includes a main lamp holder and an auxiliary lamp holder set, which is provided with an auxiliary lamp holder. The main lamp holder is internally configured with a multifunction ballast, which is electrically connected to a conducting portion. Each of the conducting portions is electrically connected to a connecting portion of each of the auxiliary lamp holders by means of a set of conducting cables, thereby enabling parallel connection between each of the auxiliary lamp holders using the single multifunction ballast, and achieving the effectiveness to enable the single multifunction ballast to provide stable rectification and energy saving for the auxiliary lamp holders. Furthermore, a starting capacitor and current-limiting inductor can be disposed within each of the auxiliary lamp holders, thereby reducing use-cost of the set of conducting cables while facilitating maintenance of the starting capacitors and the current-limiting inductors.

Abstract: A fluorescent lamp holder has a socket circuit unit disposed on the lamp socket in the assembly. The distribution wiring related to the holder is disposed in the socket circuit unit previously, where the socket circuit unit working as the distributional junction. The user can set up the electronic starter easily and correctly in installation of the lamp. Furthermore, the electronic starter can be divided into two units previously. These two units are matched with the lamp sockets on the two extremities of the lamp holder, which can improve the function of heat transfer and the convenience of maintenance. It can also reduce the risk of circuit failure and the cost of maintenance.

Abstract: A fluorescent lamp circuit structure includes an isolated type direct current supply independent structure connected to isolated type fluorescent lamp electronic lighting circuits of fluorescent lamps at a far end via a distribution line. The isolated type direct current supply structure is commonly used by a plurality of isolated type fluorescent lamp electronic lighting circuits.