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Araki N.,Nippon Telegraph and Telephone | Imanaka H.,NTT
NTT Technical Review | Year: 2014

The Focus Group on Disaster Relief Systems, Network Resilience and Recovery (FG-DR&NRR) was established within ITU-T (International Telecommunication Union-Telecommunication Standardization Sector) in January 20 2, as a Japanese government initiative, to study international standardization related to disaster response by utilizing information and communication technology (ICT). One of the authors (Noriyuki Araki) served as the chairman of this focus group. By May 20 4, the FG-DR&NRR had held a total of eleven meetings (including two electronic conferences) and developed eight deliverables. This article reports the results of the final FG-DR&NRR meeting, provides an outline of the deliverables, and summarizes a plan for future international standardization activities in relation to the use of ICT to cope with disasters.

Xia T.J.,Verizon Laboratories | Gringeri S.,Verizon Laboratories | Tomizawa M.,NTT
IEEE Communications Magazine | Year: 2012

Network traffic demands are forecast to increase for the foreseeable future, with the challenge being to meet the demand while maintaining or lowering network costs. Simply increasing capacity will not be sufficient; overall bandwidth utilization also needs to improve. A combination of improved transport capacity through increased spectral efficiency and bit rate along with better network utilization by integrating subchannel electrical grooming into the transmission system will be required. Smarter ways to utilize optical capacity are key since transmission costs have been decreasing slower than grooming and switching costs. Integrated transport and switching can improve the efficiency of the client network using techniques such as port virtualization and transit traffic reduction. The baseline for transport networks will be 100 Gb/s PM-QPSK using 50 GHz channel spacing. Moving from a fixed DWDM channel arrangement to support flexible grid and super channels will allow tighter channel (carrier) spacing and should increase capacity by 30 to 50 percent. For shorter distances higher-order modulation such as 16-QAM can double network capacity. To better optimize network efficiency, an architecture that flexibly combines lower rate (sub-100 Gb/s) clients to form channels (carriers) and then superchannels will be required. © 2012 IEEE.

Kapoor J.K.,NTT | Jabin S.,Lingayas University | Bhatia H.S.,Lingayas University
Journal of Industrial Pollution Control | Year: 2013

One of the promising technologies for removal of suspended particles from water is coagulation and flocculation. The present study was aimed to examine the effect of alum as a coagulant, in conjunction with synthetic and natural polyelectrolyte as a coagulant aid for removal of turbidity from water. By using natural and synthetic coagulant aid, considerable saving in chemicals and sludge handling cost can be achieved. These tests were carried out using artificial water and kaolin as model suspension to represent a wide range of natural turbid water. A conventional jar test apparatus was employed for the study. Turbidity removal efficiency of synthetic polyelectrolyte namely accofloc A-110 and natural polyelectrolyte chitosan have been compared in low, medium and high turbid water. In low turbid water (i.e. 50NTU turbidity), accofloc A-110 in conjunction with alum has shown better result as compared to chitosan in conjunction with alum. The polyelectrolyte accofloc A-110 has been able to remove 89.2% turbidity whereas chitosan has been able to remove only 80% turbidity from water. In medium turbid water (i.e. 150NTU) and high turbid water (i.e. 250NTU), chitosan is proved to be more effective as compared to accofloc A-110. Chitosan has been able to remove 95.2% and 99.5% turbidity from medium and high turbid water respectively as compared to 93.5% and 98.1% removal by accofloc A-110. © EM International.

Roese J.,Deutsche Telekom AG | Braun R.-P.,Deutsche Telekom AG | Tomizawa M.,NTT | Ishida O.,NTT
IEEE Communications Magazine | Year: 2010

This article overviews requirements, standardization activities, as well as enabling technologies regarding the evolution of the optical transport network with 100 Gigabit Ethernet. Joint requirements raised by the R&D activities of two international carriers are described. Technical assessment for a realistic roadmap is also described. © 2010 IEEE.

Miyashita T.,NTT
European Conference on Optical Communication, ECOC | Year: 2010

This presentation will describe the significant R&D efforts in Japan to make low loss optical fibers for communications after the work of Dr. Kao. Key fabrication technologies for lowering the loss and for better manufacturability will be presented. ©2010 IEEE.

Information and communication technology (ICT) has become an indispensable part of our lives supporting finance, education, medical care, and public administration. What kind of viewpoint or behavioral pattern must experts and specialists have in order to develop innovative technologies for achieving a safe and secure society? We sat down with Representative Director and Senior Executive Vice President Hiromichi Shinohara to find out how NTT deals with this question as a leading company.

NTT Director and Executive Vice President Yasuyoshi Katayama oversees the entire network as director of NTT's Technology Planning Department. We asked him about specific activities in the NTT Group-a driving force behind information and communications technology-to provide services for the Next Generation Network rollout period from the view-points of direction, international contributions, and social contributions.

Miura S.,NTT
NTT Technical Review | Year: 2010

This article introduces NTT's activities, including those in research and development, for promoting the application of information and communications technology (ICT) in various fields. It is based on the keynote address given in Japanese by Satoshi Miura, President and CEO of NTT, at the NTT R&D Forum 2010 held on February 22-24, 2010.

News Article | December 9, 2016

香港--(BUSINESS WIRE)--(ビジネスワイヤ) -- NTT(NYSE:NTT)グループ傘下で、ICTソリューションと国際通信事業を手掛けるNTTコミュニケーションズ株式会社(NTTコム)は、アジアの小売業者、メーカー、卸売業者が破壊的技術と、これら企業が直面する課題への対応に投資している状況を明らかにする新調査の結果を発表しました。「The Digital Silk Road to Success(成功へのデジタルシルクロード)」と題された本調査から、中国、香港、シンガポールに拠点を置く大企業で業務とITの意思決定に携わる者は、人材不足、人件費の上昇、価格圧力、コスト増加、他社との競争などの課題に直面しているにもかかわらず、約80パーセントが今後12カ月間の事業の見通しについておおむね前向きであることが分かりました。経済情勢は不透明ですが、回答者は成長モデルを変革する鍵になるのは新技術であると考えています。 IoTとビッグデータ分析がすでにサプライチェーンのエコシステムに変化をもたらしている 調査対象となった組織の94%はビジネス上の課題を克服するために、破壊的技術を


News Article | February 17, 2017

香港--(BUSINESS WIRE)--(ビジネスワイヤ) -- NTTグループ(NYSE: NTT)としてICTソリューションや国際通信事業を手掛けるNTTコミュニケーションズ株式会社(NTTコム)は本日、当社の香港金融データセンタータワー2(FDC2)がアップタイム・インスティテュートによる管理・運用(M&O)基準認証を取得したと発表しました。NTTコムは、この認証を取得した香港初のデータセンター・サービスプロバイダーとなります。当社はネクスセンター(Nexcenter)ブランドで世界の当社データセンターすべてを対象に約束していることの一環として、運用の卓越性および効率性に真剣な努力を傾けていますが、今回の認証は当社のこうした取り組みを浮き彫りにするものです。 アップタイム・インスティテュートのM&O認証は一連の厳格なリスク分析や業界特有の評価基準に沿って行われますが、それらによってデータセンターの管理・運用能力をインフラとは独立に評価します。評価される領域には、人員配置や組織体制、訓練、保守、計画、管理などがあります。徹底的な評価により、説明責任、把握能力、コ

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