Abstract: The invention relates to a resource distribution method for throughput maximization in a cooperative cognitive SIMO network. The primary user sends data after receiving a cooperation confirmation message, and the cognitive network keeps silence, receives the information data of the primary user and simultaneously decodes the data. The cognitive users which successfully decode the data utilize part of their transmission power to send the data of themselves to the cognitive base station, the remaining transmission power is used for helping in forwarding the data of the primary user; the cognitive users which cannot successfully decode the data only send the data of themselves and do not forward the data of the primary user. The cognitive base station eliminates the interference of the data of primary user in the received mixed signals and performs beamforming on the signals after eliminating the interference.

Abstract: A welding system and method includes a main torch including a main electrode configured to form a first arc with a base metal; a first bypass torch including a first bypass electrode configured to form a second arc with the main electrode; and a second bypass torch including a second bypass electrode configured to form a third arc with the main electrode.

Abstract: A control system for a welding process controls the current applied to the welding torch in either a manual or automatic welding system. The arc voltage is monitored to determine when full penetration of the weld pool has occurred so that the current to the welding torch can be stopped. The arc voltage or the slope of the increase of the arc voltage can be used to operate the control algorithm. Additional variables such as torch speed, torch angle, and weld position can be used to influence the control algorithm. The contemplated systems include both GTAW and PAW welding process as well as others.

Abstract: A welding system and method includes a main torch including a main electrode configured to form a first arc with a base metal; a first bypass torch including a first bypass electrode configured to form a second arc with the main electrode; and a second bypass torch including a second bypass electrode configured to form a third arc with the main electrode.

Abstract: An oil in water lubricant fluid for use in steel cold rolling, comprising an oil in water emulsion having a particle size of 1 ?m or less, consisting of an oil phase and water, where the oil phase includes about 5 wt % to about 40 wt % of at least one polymeric surfactant, about 25 wt % to about 95 wt % base oil, about 0.2 wt % to about 10 wt % extreme pressure lubrication additives, and about 0.5 wt % to about 6 wt % other functional additives.

Abstract: An infrared touch screen device and a multi-touch locating method thereof are provided. On the touch screen, large angle infrared emitting elements and infrared receiving element are used to realize the axis scanning of multi-angle by an optimized sampling and processing circuit. After the data processing of removing ambient light, normalization and so on for original data of the axis scanning, the logic axis touch information is generated, and a luminance map of the current frame is generated according to the information. Multiple valid touch regions are recognized by contrast with a theoretical touch luminance map. Then a tracing algorithm of image is used, and a multi-touch event is outputted finally. The touch device is simple, reliable and accurate and has wide range application.

Abstract: A welding system and method includes a main torch including a main electrode configured to form a first arc with a base metal; a first bypass torch including a first bypass electrode configured to form a second arc with the main electrode; and a second bypass torch including a second bypass electrode configured to form a third arc with the main electrode.

Abstract: A welder for welding a base metal. The welder may include a first electrode for forming a first arc with the base metal and a second electrode for forming a second arc between the first and second electrodes. A compact welder, welding system, and method are also provided.

Abstract: The present invention provides a catalytic activity accelerant. The accelerant is added to stock oil for increasing the catalyst activity, the depth of catalytic hydrogenation and the yield of catalytic hydrogenation product, degrading the reaction conditions of catalytic hydrogenation, and improving the quality of product. The catalytic activity accelerant is consisted of an alkyl succinimide derivative, an alkyl phenol and a surfactant. The amount of the alkyl succinimide derivative in the accelerant is 5-70 wt. %. The amount of the alkyl phenol in the accelerant is 2-70 wt. %. The amount of the surfactant in the accelerant is 2-70 wt. %.

Abstract: The present invention provides a catalytic activity accelerant. The accelerant is added to stock oil for increasing the catalyst activity, the depth of catalytic hydrogenation and the yield of catalytic hydrogenation product, degrading the reaction conditions of catalytic hydrogenation, and improving the quality of product. The catalytic activity accelerant is consisted of an alkyl succinimide derivative, an alkyl phenol and a surfactant. The amount of the alkyl succinimide derivative in the accelerant is 5-70 wt. %. The amount of the alkyl phenol in the accelerant is 2-70 wt. %. The amount of the surfactant in the accelerant is 2-70 wt.

Abstract: An apparatus, system and related method are disclosed for sensing a characteristic of a workpiece, such as the location of a welding seam, using a sensor that is independent of another device for performing an operation on the workpiece, such as a welding torch for welding a seam. The sensor preferably takes the form of a plasma arc torch. This plasma arc torch travels along the workpiece, preferably just ahead of the welder for welding the workpiece or other implement and simultaneously moves to and fro in a direction transverse to the direction of travel of the welder. A non-transferred electrical arc serves to ionize a plasma gas issuing from the plasma arc torch to create a concentrated plasma jet directed towards the workpiece.

Abstract: An improved method of gas metal arc welding (GMAW) utilizing relatively low current levels. The method includes providing a variable current to form and detach a droplet from a consumable wire electrode. During the welding process, the current is sufficient to produce a droplet at the end of a consumable electrode wire, but not to independently detach the droplet. After the droplet reaches a desired diameter, the current is lowered to induce an oscillation in the droplet. At a selected oscillation of the droplet, the current is increased. The combination of the momentum created by the oscillation of the droplet and the electromagnetic force caused by the increased current serves to detach the droplet from the electrode wire.

Abstract: An improved method of gas metal arc welding (GMAW) is disclosed. The method includes utilizing a pulsed current having a variable waveform to ensure the detachment of one-droplet-per-pulse of current. During the welding process, the current is sufficient to produce a droplet at the end of a consumable electrode wire. After the droplet reaches a desired size, the current is lowered to induce an oscillation in the droplet. The current is then increased which, in combination with the momentum created by the oscillation, effects droplet detachment. The oscillation may be monitored by observing the arc voltage to determine a preferred detachment instant. A computer implemented method allows for the adaptive control of the current waveform to accommodate for anticipatable variations in the welding conditions, while maintaining ODPP transfer and a constant pulse period. An accompanying system is disclosed for implementing the method of adaptive welding.

Abstract: An improved method of arc welding uses a single power supply connected to opposed welding torches placed on both sides of a workpiece. Each torch is connected to a different polarity lead of the power supply and forms a separate arc with the workpiece. When a current is supplied to the first torch, it is guided from the first electrode, through the first arc, the workpiece, the second arc, and to the electrode of the second torch. This guiding function improves the penetration, concentration, as well as the directional stability of the arc. This permits the effective and efficient welding of relatively thick workpieces using existing equipment at low current levels.

Abstract: An antioxidant additive for an engine or propulsion system lubricant subjected to high temperatures which includes a high molecular weight substituted phenolic carboxylic acid tetraester of pentaerythritol. A lubricant blend which is capable of solubilizing the antioxidant additive and includes a polyolester, a phosphate ester and at least one of a polyalphaolefin and an alkylated naphthalene.