Abstract: Provided are methods and system for recognizing characters such as mathematical expressions or chemical formulas. An example method comprises the steps of receiving and processing an image by a pre-processing module to obtain one or more candidate regions, extracting features of each of the candidate regions by a feature extracting module such as a convolutional neural network (CNN), encoding the features into a distributive representation for each of the candidate regions separately using an encoding module such as a first long short-term memory (LSTM) based neural network, decoding the distributive representation into output representations using a decoding module such as a second LSTM-based recurrent neural network, and combining the output representations into an output expression, which is outputted in a computer-readable format or a markup language.

Abstract: Provided are methods and system for recognizing characters such as mathematical expressions or chemical formulas. An example method comprises the steps of receiving and processing an image by a pre-processing module to obtain one or more candidate regions, extracting features of each of the candidate regions by a feature extracting module such as a convolutional neural network (CNN), encoding the features into a distributive representation for each of the candidate regions separately using an encoding module such as a first long short-term memory (LSTM) based neural network, decoding the distributive representation into output representations using a decoding module such as a second LSTM-based recurrent neural network, and combining the output representations into an output expression, which is outputted in a computer-readable format or a markup language.

Abstract: The gear drive is suitable for use in forging machines having a number of dies arranged around the workpiece.The gear drive consists of drive shafts (23), lay shafts (13) and driven shafts (10) which are located in a circle concentric with the axis of the forging machine and are interlinked by means of gears (6), (11) attached to shafts. The driven shafts (10) impart motion to the tools, i.e. to the dies of the machine.The driven shafts (10) with the gears (6) attached thereto are located in a circle of a relatively bigger diameter (D). The lay shafts (13) with the gears (11) attached thereto are located in a circle of a relatively smaller diameter (d). The circles of the bigger and smaller diameters (D, d) are concentric with the axis of the forging machine. The gears (6) of the driven shafts (10) are movably interlinked with the gears (11) of the lay shafts (13).The gears (6) and (11) of the driven shafts (10) and the lay shafts (13) are arranged in the same plane.

Abstract: In a forging machine where the frictional work is reduced in the driving system at the main crankshaft and its support bearings, especially at the moment a forging force is applied. A rotary driven crankshaft is connected to a crank mechanism, which has a connecting rod connected to the driven crankshaft. The opposite end of the connecting rod is pivotally connected to an arm for driving the main crankshaft in an oscillatory rocking motion, which reciprocates the hammer means.