Nec Corporation

Shinji Kasahara

Katsuhiro Ochiai

Ryota Mase

Sho Asano

A vegetation effect calculation device includes: a memory configured to store instructions; and at least one processor configured to execute the instructions to: acquire a moisture content of a slope, a relational expression between the moisture content and an adhesion of soil in the slope, and a vegetation adhesion that is an adhesion of vegetation abundantly growing in the slope; calculate a correction value, using the acquired moisture content of the slope, and the acquired relational expression between the moisture content and the adhesion of the soil; and calculate a corrected vegetation adhesion, using the acquired vegetation adhesion, and the calculated correction value.

Vegetation effect calculation device, vegetation effect calculation system, and storage medium storing vegetation effect calculation program

A structure abnormality detection device that detects an abnormality of a structure includes means for storing a model that predicts, from a first inspection value acquired at a first inspection position, a second inspection value acquired at a second inspection position that is a position where a vibration intensity in vibration of a predetermined vibration mode at a natural frequency of the structure is substantially the same as at the first inspection position; and means for detecting an abnormality of the structure by evaluating fidelity of the first inspection value and the second inspection value acquired at a particular time to the model.

Structure abnormality detection device, structure abnormality detection method, storage medium, and structure abnormality detection system

A slope monitoring system includes an analysis formula variable measuring meanswhich measures values of respective analysis formula variables that are obtained when a state of a test layer has been changed from a test environment in which there exist at least an arbitrary test layer or a test layer identical to a material layer forming a monitoring target slope, and a value of a predetermined first observable amount, and an analysis formula variable modeling meanswhich constructs, based on various values obtained from the test environment, for each of the analysis formula variables, a model defined a relationship of them with a second observable amount that is a predetermined observable amount being the same as the first observable amount, or having a known relationship with the first observable amount, or a predetermined third variable that can be calculated from the second observable amount.

Slope monitoring system, device for slope stability analysis, method, and program

An information processing system, an information processing method, and a program capable of satisfactory data analysis are provided. The information processing system includes a frequency conversion unitwhich converts a plurality of pieces of time-series data obtained through detection carried out by a plurality of sensing unitsinto pieces of frequency datarespectively, a model construction unitwhich generates a correlation modelusing pieces of the frequency datafor at least two sensing unitsfrom among the plurality of sensing unitsand calculates a correlation strengthof the correlation modeland an error detection unit which determines whether an error has occurred based on the correlation strength

Information processing system, information processing method, and program

A gas laser oscillator according to the present invention comprises an ion laser tube provided with a capillary tube and an anode and a cathode as discharging electrodes disposed at its ends, plasma focusing electromagnets to generate the magnetic field for plasma focusing disposed around the ion laser tube, and a pair of optical resonance mirrors disposed at both ends of the ion laser tube, and is characterized by that the magnetic field strength at the cathode end face is set to 100 gauss or less and that the diameter of the lines of magnetic flux at the cathode end face is made to be smaller than the diameter of the capillary tube at the capillary tube end face.

Growing community of inventors

Tokyo, Japan

Shinji Kasahara