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Bedford, MA, United States

Kishizawa N.,Hitachi Ltd. | Tsuzuki K.,170 Systems | Hayatsu M.,Hitachi Ltd.

A new RO system for large-scaled SWRO plant has been developed in the project named "Mega-ton Water System" with private-public cooperation in Japan. The characteristic of the newly developed RO system to increase the recovery rate is to use the short vessel that contains 2-4 elements for the first stage, and to use relatively long vessel for the second stage after inter-booster pump in order to reduce the pressure and the flux of the lead element The new RO system used by low pressure new SWRO element studied by this project is capable of the high recovery rate (under 65%) and allows the scale of the intake and pretreatment equipment to reduce compared to conventional system. Considering also to new isobaric ERD that has been developed in this project, the energy consumption was estimated and compared the results with that of conventional system. It is suggested that the reduction of energy consumption is to be about 20% compared with a conventional system. © 2015 Elsevier B.V. Source

Zaharris B.,ViaSat Inc | Davis B.,ViaSat Inc | Fiscko K.,170 Systems | Otte E.,Systems Center Pacific | Chan B.,Systems Center Pacific
Proceedings - IEEE Military Communications Conference MILCOM

The MD-1366 Enhanced Bandwidth Efficient Modem (EBEM) with Ethernet Service Expansion Module (ESEM) is the STANAG 4486 ed. 3 compliant FDMA modem used by the Department of Defense (DoD) for Satellite Communications (SATCOM). Recently, features of the EBEM such as embedded Transmission Security (TRANSEC) and Antenna Handover (AH) have been enhanced to meet the US Navy's emerging operational requirements. EBEM's FIPS 140-2 level 2 certified TRANSEC capabilities have been enhanced to support simplex link establishment, allowing the Navy to support split IP operations, combining transponded SATCOM paths (WGS) with partially processed SATCOM paths (AEHF) to effectively produce a duplex path for user terminal sessions. EBEM's Antenna Handover capabilities have been extended to provide low processing delay while maintaining Bit Count Integrity (BCI) through handover events. These upgrades, along with existing features, to be deployed in conjunction with Advanced Digital Network System (ADNS) Increment IV will allow the Navy to smoothly transition to bandwidth efficient IP-based data. Most notably, the Navy will be able to leverage Adaptive Coding and Modulation (ACM) in conjunction with EBEM's flow control capabilities to feed information back to the router as the data rate adapts to the dynamic satellite channel conditions. This paper discusses the new capabilities in detail as well as recent results related to the Navy's effort to integrate the new features into ADNS © 2013 IEEE. Source

Groen F.J.,NASA | Evans J.W.,NASA | Hall A.J.,170 Systems
Proceedings - Annual Reliability and Maintainability Symposium

In defining the direction for a new standard, NASA's Office of Safety and Mission Assurance (OSMA) has started from first principles. This has meant extracting critical objectives that its programs need to undertake a reliable mission and then structuring these objectives to lead mission planning. This back-to-basics approach to examining cross cutting concerns has yielded an objectives hierarchy, which has emerged from NASA reliability expertise, to define critical approaches for achieving high reliability and maintainability (R&M). It embodies the knowledge attained over years of NASA experience; yet, the hierarchy extracts essentials without prescriptive processes that may encumber creativity and effective decision-making. It is meant to lead, not follow, and to enable not encumber. Creating a hierarchy as a basis for assurance implementation is a proven approach that has emerged from the safety case ideals. This approach holds the opportunity to enable new directions in an evolving design framework, in which models will govern optimization to achieve the best de signs and prescribed documents will take a back seat. The hierarchy itself may look simple, but it is the drivetrain for achieving the reliability necessary for successful missions. The expectation is that it will be put to use, as the design environment evolves, to enable the right products in a new design environment and to cost effectively achieve key objectives. © 2015 IEEE. Source

Kofax and 170 Systems | Date: 2004-11-23

computer software for use in document management and imaging.

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