Mitsubishi

About: Mitsubishi is a company organization based out in Tokyo, Japan. It is known for research contribution in the topics: Signal & Layer (electronics). The organization has 53115 authors who have published 54821 publications receiving 870150 citations. The organization is also known as: Mitsubishi Group of Companies & Mitsubishi Companies.

Economic phenomenon predicting and analyzing system using neural network

Abstract: An economic phenomenon predicting and/or analyzing system using a neural network. In the disclosed system, time series data indicating economic phenomena are input to preparation modules, and moving-average values and their differences are generated. One of the preparation modules performs a predetermined process over the time series data indicating an economic phenomenon, i.e. the change of TOPIX, to remove trends. A pattern sorter sorts the trend-free data into a certain number of groups. Average values of various time series data, their differences and the result of pattern sorting are input to input layer neurons of the network. The network is provided in advance with learning information of the change of TOPIX in the past. The output of the output layer neurons will be a value of prediction of the change of TOPIX. For the output of hidden layer neurons, principal components are obtained by principal analysis modules. A correlation analysis module obtains a distribution of frequency of principal component rankings and analyzes the correlation between the explanation variants and the output of the neural network based on the obtained distribution of frequency.

Modeling and diagnostics of the structure of rf glow discharges in Ar at 13.56 MHz.

Abstract: The structure of rf glow discharges in Ar at 13.56 MHz is described, making use of a relaxation continuum model. The model includes consideration of the relaxation kinetics for the momentum and energy of charged particles. The discharge structure and plasma property are modeled using molecular quantities (i.e., collision cross sections, radiative lifetimes, etc.) and macroscopic transport quantities for charged particles. Spatiotemporal distributions for the field and the net production rate and density of particles are studied in detail in the bulk plasma as well as the ion sheath under periodic steady-state conditions. In particular, the temporal profiles including phase shift and nonlinear variation with respect to the applied-voltage wave form are discussed. Each type of excited atom shows a different spatiotemporal density distribution due to different loss mechanisms, although the production profiles are similar. That is, Ar${(}^{3}$${\mathit{p}}_{5}$) is controlled by a radiative decay and quenching in collisions with Ar${(}^{1}$${\mathit{S}}_{0}$), while Ar${(}^{3}$${\mathit{P}}_{0,2}$) is controlled by diffusion. The validity of the relaxation continuum model is investigated by the observation of external electric properties and the measurement of spatiotemporally resolved optical emission from the rf glow. Quantitative comparison of the results from theory and experiment supports the validity of the relaxation continuum model. The relaxation continuum model is simple and physically reasonable.

Simultaneous broadcasting system, transmitter and receiver therefor

Abstract: A simultaneous broadcasting system, a transmitter, and a receiver therefor use a first frequency bandwidth for a wide area broadcasting and a second frequency bandwidth for a local area broadcasting obtained by dividing a frequency bandwidth of one broadcasting channel. In the simultaneous broadcasting system, a same program for the wide area broadcasting is transmitted based on an OFDM modulation method by using the first frequency bandwidth and a different program for each local area station is transmitted by using a different spreading code allocated for each local are station based on a SS modulation method.