Publications

Results 43401–43500 of 99,299

Search results

Jump to search filters

Long-Range Development Framework

Cipriani, Ralph J.

The Long-Range Development Framework (LRDF) guides effective, efficient, and sustainable land and infrastructure development for Sandia National Laboratories’ (SNL) New Mexico and California campuses. The LRDF is SNL’s seminal site planning document. Similar to a municipal planning document, it articulates a long-range development vision, framework goals, and a set of integrated development principles for land use, security, transportation, and environmental sustainability. The LRDF is neither a project planning document, nor does it recommend or eliminate specific projects; rather, it introduces planning concepts and provides guidance regarding effective, efficient, and sustainable site development.

More Details
TYPE Other Report YEAR 2016
DOIOSTI

TA-II Sub-Area Plan: Overview & Summary

Cipriani, Ralph J.

Technical Area II is a brownfield site with a central, but “backyard” location that makes it a perfect area for site-support activities, particularly those that can be relocated from the TA-I “front-yard.” TA-II has a large amount of undeveloped land that should be held in reserve for future R&D mission work. Specifically, the Sub-Area Plan recommends: (1) Accommodating primarily site-support land uses, including site-support functions that can be relocated from TA-I; (2) Preserving land for future mission development opportunities which also protects sensitive environmental areas; (3) Locating future development along the Hardin and 9th Avenue corridors where existing infrastructure exists; and (4) Constructing critical infrastructure links (e.g., roads and utilities).

More Details
TYPE Other Report YEAR 2016
DOIOSTI

TTR Sub-Area Plan: Overview & Summary

Cipriani, Ralph J.

The TTR Sub-Area Plan is currently under development and is significantly influenced by National Nuclear Security Administration (NNSA) decisions about permitting and environmental regulatory compliance issues. The sub-area plan will build upon previous draft master plans, F&I revitalization plans, and building studies. Planning concepts under consideration are: Continue to use and preserve large tracts of land for large-scale mission-related testing; Identify investments to protect, sustain, and recapitalize infrastructure, facilities, and equipment assets; Identify opportunities to dispose of obsolete facilities and consolidate common functions in order to reduce operating costs.

More Details
TYPE Other Report YEAR 2016
DOIOSTI

CA Sub-Area Plan: Overview & Summary

Cipriani, Ralph J.

The Plan seeks to: (1) Maintain current Research and Development (R&D), manufacturing, and administration land use; (2) Create a new corporate entrance and “front door” on the east side of the campus in an expanded General Access Area; (3) Make security changes to expand the Limited Areas to accommodate growth in classified programs, and expand the General Access Area to promote collaboration with the private sector in concert with general Livermore Valley Open Campus (LVOC) development; (4) Organize and consolidate mission capability groups on campus; and (5) Enhance the quality of the working environment through pedestrian and bicycle circulation, landscape, recreational and sustainable site design improvements.

More Details
TYPE Other Report YEAR 2016
DOIOSTI

SNL perspective on the nTOF workshop

Jones, Brent M.; Hahn, Kelly; Ruiz, Carlos L.; Chandler, Gordon A.; Fehl, David L.; Lash, Joel S.; Knapp, P.F.; Gomez, Matthew R.; Hansen, Stephanie B.; Harding, Eric H.; Mcpherson, Leroy A.; Nelson, Alan J.; Rochau, G.A.; Schmit, Paul; Sefkow, Adam B.; Sinars, Daniel; Torres, Jose; Bur, James A.; Cooper, Gary; Bonura, Michael; Long, Joel; Styron, Jedediah D.; Buckles, Rob; Garza, Irene; Moy, Kenneth J.; Davis, Brent; Tinsley, Jim; Tiangco, Rod; Miller, Kirk; Mckenna, Ian

Abstract not provided.

More Details
TYPE Presentation YEAR 2016
OSTI

On the Path to SunShot: Emerging Issues and Challenges in Integrating Solar with the Distribution System

Broderick, Robert J.; Palmintier, Bryan; Mather, Bary; Coddington, Michael; Baker, Kyri; Ding, Fei; Reno, Matthew J.; Lave, Matt; Bharatkumar, Ashwini

From 2010 through the first half of 2015, the installed capacity of solar photovoltaics (PV) connected to the U.S. distribution system increased sixfold, from approximately 1.8 GW to more than 11 GW. This accounts for over half of the approximate total U.S. solar installations of 20 GW. Distributed generation from PV (DGPV) is expected to comprise 50%–60% of total U.S. PV capacity through at least 2020. The rapid deployment of high penetrations of DGPV into the distribution system has both highlighted challenges and demonstrated many successful examples of integrating higher penetration levels than previously thought possible. In this report, we analyze challenges, solutions, and research needs in the context of DGPV deployment to date and the much higher levels of integration that are expected with the achievement of the U.S. Department of Energy’s SunShot targets.

More Details
TYPE Other Report YEAR 2016
DOIOSTI

Analysis of SHDAS Platform Evaluation at PSRF

Merchant, Bion J.

The Seismo-Hydroacoustic Data Acquisition System (SHDAS) is undergoing evaluation in preparation for its engineering, development, and deployment by the U.S Navy as an ocean bottom seismic monitoring system. A prototype of the Underwater Platform has been deployed at the Pinedale Seismic Research Facility (PSRF) in Wyoming to determine how well it couples to the ground for the purpose of measuring ground motion. The evaluation was conducted during the summer of 2014 by the U.S. Navy, U.S. Air Force, RP Kromer Consulting, and other contractors. Sandia National Laboratories (SNL) was asked to analyze and interpret the collected data so as to comment on coupling of the Underwater Platform to the ground.

More Details
TYPE SAND Report YEAR 2016
DOIOSTI

Engineering Bioelectronic Signal Transduction Using the Bacterial Type III Secretion Apparatus

Azam, Anum; Tullman-Ercek, Danielle

Engineering efficient methods for living systems to transfer electrical energy to non-living systems, at relevant size scales, continues to challenge our knowledge of materials and biology. Our goal was to enable signal transduction between cells and inorganic materials, using controlled electron transport as the energy transfer mechanism. We envision using the cell as a living battery, providing a set of environmental signals to trigger synthetic biological networks that divert intracellular electron transport pathways to inorganic extracellular structures. Conversely, changing electron influxes could guide cellular responses. It is challenging, however, to precisely engineer nanostructured materials to achieve controllable catalytic or electronic properties and connect them with biological energy sources. Our approach to this problem is to engineer protein scaffolds, taking advantage of the native recognition, selectivity and self-assembly properties of these nano-scale building blocks as well as their native intracellular localization patterns. We are using a type III secretion system (T3SS) needle protein from Salmonella enterica, PrgI, as a template for metal nanowire synthesis for biosensing and bioenergy applications. We demonstrate that purified PrgI monomers spontaneously self assemble into long filaments, and that high-affinity peptide tags specific for attachment to functionalized particles can be integrated into the N-terminal region of PrgI. The resulting filaments selectively bind to gold, whether the filaments are assembled in vitro, sheared from cells, or remain attached to live S. enterica cell membranes. Chemical reduction of the gold modified PrgI variants results in structures that are several microns in length and which incorporate a contiguous gold surface.

More Details
TYPE SAND Report YEAR 2016
DOIOSTI

Systematic Literature Review: How is Model-Based Systems Engineering Justified?

Carroll, Edward R.; Malins, Robert J.

The genesis for this systematic literature review was to search for industry case studies that could inform a decision of whether or not to support the change process, investment, training, and tools needed to implement an MBSE approach across the engineering enterprise. The question asked was, how the change from a document - based systems engineering approach (DBSE) to a model-based systems engineering approach (MBSE) is justified? The methodology employed for this systematic literature review was to conduct a document search of electronically published case studies by authors from the defense, space, and complex systems product engineering industries. The 67 case studies without metrics mainly attributed success to completeness, consistency, and communication of requirements. The 21 case studies with metrics on cost and schedule primarily attributed success to the ability of an MBSE approach to improve defect prevention strategies. The primary conclusion is that there is a significant advantage to project performance by applying an MBSE approach. An MBSE approach made the engineering processes on a complex system development effort more efficient by improving requirements completeness, consistency, and communication. These were seen in engineering processes involved in requirements management, concept exploration, design reuse, test and qualification, Verification and Validation, and margins analyses. An MBSE approach was most effective at improving defect prevention strategies. The approach was found to enhance the capability to find defects early in the system development life cycle (SDLC), when they could be fixed with less impact and prevented rework in later phases, thus mitigating risks to cost, schedule, and mission. However, if a program only employed an MBSE approach for requirements management, advantages from finding defects early could not be leveraged in later phases, where the savings in cost and schedule from rework prevention is realized. Significant performance success was achieved when the systems engineer (SE) held a leadership role over engineering process es. A number of the case studies addressed a general lack of skilled MBSE engineers as a major hindrance to implementing an MBSE approach successfully.

More Details
TYPE SAND Report YEAR 2016
DOIOSTI
Results 43401–43500 of 99,299
Results 43401–43500 of 99,299