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Tokyo, Japan

NTT DATA Corporation is a Japanese system integration company and a subsidiary of NTT Group.Nippon Telegraph and Telephone Public Corporation, a predecessor of NTT, started Data Communications business in 1967. NTT, following its privatization in 1985, spun off the Data Communications division as NTT DATA in 1988, which has now become the largest of the IT Services companies headquartered in Japan.NTT DATA is a publicly traded company, but is about 54 percent owned by NTT. Its business areas are in national and local governments, financial, and telecommunication sectors. According to reports in 2012, Forbes Global 2000 recognizes NTT DATA as the 5th largest IT Services company. Wikipedia.

We estimated the slip-deficit rate distribution on the plate boundary between the subducting Philippine Sea plate and the continental Amurian plate along the Nankai Trough, southwest Japan. Horizontal and vertical displacement rates were calculated from land-based Global Positioning System (GPS) data during the 5-year period from 1 January 2005 to 31 December 2009. We employed an inversion analysis of geodetic data using Akaike's Bayesian information criterion (ABIC), including an indirect prior constraint that slip distribution is smooth to some extent and a direct prior constraint that slip is mainly oriented in the plate-convergent direction. The results show that a large slip deficit exists at depths ranging from 15 to 20. km on the plate boundary in a belt-like form. The maximum slip-deficit rate was identified off Shikoku and reached 6. cm/year. The slip-deficit rate differed by as much as 1. cm/year when using a different geometric model of the subducting plate. On the basis of the spatial distribution of estimation errors and the resolution of the obtained slip-deficit rate on the plate boundary, we also found that the offshore slip-deficit rate cannot be estimated with sufficient accuracy using only land-based GPS data. Therefore, we tested the improvement in results when introducing hypothetical ocean-bottom GPS stations. The stations were arranged in four along-arc and across-arc spacings of 80. km and 40. km. The ocean-bottom data improved the estimation errors and resolutions, and successful results were obtained for a checkerboard with each square 75. km. ×. 76. km. Our results indicate that 40-km along-arc and across-arc two-dimensional spacing of ocean-bottom GPS stations is required to obtain reliable slip-deficit distributions near the trough axis, assuming the current estimation accuracy for ocean-bottom horizontal displacement rates. © 2013 Elsevier B.V.

Kadoya K.,NTT Data
NTT Technical Review | Year: 2015

At NTT DATA, we do not limit ourselves to developing systems in response to RFPs (requests for proposals); we endeavor to create and commercialize innovative new services together with both client and partner companies in short periods of time. However, thinking about this work and proceeding with it involve a very different approach than that used in system development projects, and therefore, several departments within the company have been moving forward with a variety of initiatives to facilitate the process. This article introduces the initiatives related to the creation of new services at NTT DATA.

Azuma T.,NTT Data
NTT Technical Review | Year: 2014

Automation of software development is aimed at reducing the human workload in each process of software development. NTT DATA has been promoting this concept since 20 0. A wide variety of approaches have been taken for automating software development, and as no special technology is required, there is little difference among these approaches. What is important is determining how to expand the use of automation technology and how to make it the de facto standard. This article describes the overview and status of NTT DATA's efforts to expand the use of automation technology.

Yoshida E.,NTT Data
NTT Technical Review | Year: 2014

While the technique of software reuse has been successful to some extent, a lot of failures have also been witnessed due to the inherent difficulty of reusing software. However, recent trends in big software data may lead to a solution to this problem. This article describes NTT DATA's latest research and development activities involving software reuse techniques.

As described in the previous article, NTT DATA is promoting TERASOLUNA Suite as an automation tool product suite for system development and is achieving a significant reduction in workload in inhouse projects. However, testing still requires a lot of work and man-hours. Thus, a lot of challenges remain to improve productivity. One solution being developed to meet these challenges is TERASOLUNA Simulator, which can reduce the time needed for the entire integration testing phase.

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