Nec Corporation

Ns Solutions Corporation

Yoshimasa Sugimoto

Toshitaka Torikai

Hiroki Takeshita

Kenko Tagushi

Aspects of the invention relate to creating virtual data of an effective obligor number N based on setting information, determining ratings after transition of the virtual data for a plurality of scenarios according to rating transition data representing transition of each rating, calculating a risk amount for each of the scenarios based on the rating after transition of the virtual data and specifying a risk amount corresponding to a confidence level as a predicted risk amount of the virtual data, setting a minimum effective obligor number N among the effective obligor numbers N when predicted risk amounts smaller than an allowable risk amount are specified, as a diversification object number, and calculating a credit limit based on the set diversification object number and a total credit.

Information processing apparatus, information processing method, and program product

An avalanche photodiode having a semiconducting light absorbing layer and an overlying avalanche gain layer of wide band-gap. The usual heavily doped region is formed in the avalanche gain region to form an abrupt p-n junction. Two semiconducting guard rings are formed around the heavily doped region. The doping of both rings provide graded p-n junctions with the avalanche gain layer. The inner guard ring extends more deeply into the avalanche gain layer than either the outer ring or the heavily doped region.

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Tokyo, Japan

Yoshimasa Sugimoto