Abstract: A DC circuit breaker device is provided, including: a circuit breaker module including a first circuit breaker and a second circuit breaker connected in series with the first circuit breaker; a commutation module connected in parallel with the first circuit breaker and including a commutation capacitor, a commutation switch module and a commutation inductor connected in series; the commutation switch module including a commutation switch positive branch and a commutation switch negative branch; and a control module coupled to the circuit breaker module and the commutation module, and configured to control the switching on/off of the commutation switch positive branch and the commutation switch negative branch after the first circuit breaker is re-closed. A method of controlling a DC circuit breaker is also provided.

Abstract: A method for table extraction from journal literature based on text state characteristics is disclosed. The method includes: constructing a table model according to characteristics of tables in journal literature, where the table model includes two parts: a table caption and table content, building a text line set, table detection, table data positioning, table reconstruction, building a cell data set, restoring data of merged cells, checking the cell data set, and outputting table data. The method is particularly designed based on characteristics of tables such as three-line tables widespread in PDF journal literature, which can realize accurate and correct extraction of specific tables in the PDF journal literature, and especially can ensure a logic relationship of a three-line table. The whole process neither requires manual intervention or interaction nor requires table selection, so that the whole extraction process is automatic.

Abstract: A method for estimating precipitation distribution for a geographical region comprising the steps of: providing precipitation data (S10) for the geographical region with a first spatial resolution for a predetermined period of time (t1, t2); providing first soil moisture data (S20) for the geographical region for a first point in time (t3) with a second spatial resolution, wherein the second spatial resolution is higher than the first spatial resolution, and wherein the first point in time (t3) is within the predetermined period of time (t1, t2); providing second soil moisture data (S30) for the geographical region for a second point in time (t4) with a third spatial resolution, wherein the third spatial resolution is higher than the first spatial resolution, and wherein the second point in time (t4) is within the predetermined period of time (t1, t2); calculating soil moisture difference data (S40) between the first soil moisture data and the second soil moisture data; calculating precipitation distribution

Abstract: A method for table extraction from journal literature based on text state characteristics is disclosed. The method includes: constructing a table model according to characteristics of tables in journal literature, where the table model includes two parts: a table caption and table content, building a text line set, table detection, table data positioning, table reconstruction, building a cell data set, restoring data of merged cells, checking the cell data set, and outputting table data. The method is particularly designed based on characteristics of tables such as three-line tables widespread in PDF journal literature, which can realize accurate and correct extraction of specific tables in the PDF journal literature, and especially can ensure a logic relationship of a three-line table. The whole process neither requires manual intervention or interaction nor requires table selection, so that the whole extraction process is automatic.