Naval Surface Warfare Center Dahlgren Division

Mountain Road, VA, United States

Naval Surface Warfare Center Dahlgren Division

Mountain Road, VA, United States
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Pazos P.,Old Dominion University | Magpili N.,Old Dominion University | Zhou Z.,Naval Surface Warfare Center Dahlgren Division | Rodriguez L.J.,Naval Surface Warfare Center Dahlgren Division
ASEE Annual Conference and Exposition, Conference Proceedings | Year: 2016

In highly technical organizations, work is becoming increasingly distributed; requiring practicing engineers to master virtual collaboration skills while acquiring expertise in a range of collaboration technologies. Although there has been great emphasis on developing collaboration competencies in the engineering curriculum, empirical evidence of successful strategies for distributed team settings is scarce. As an attempt to fill this gap this study investigates the impact of a scalable intervention in developing virtual collaboration skills. The intervention, based on instructional scaffolds embedded with collaboration technologies, is aimed at supporting specific processes including planning, goal setting, clarifying goals and expectations, communication, coordination and progress monitoring. A quasi-experimental design was used to evaluate the impact of the intervention on student teamwork skills. Data from 278 graduate and undergraduate engineering students participating in virtual team projects was used in the analysis. Results from the analysis are presented suggesting a statistically significant impact of the intervention on self-management skills when comparing randomly assigned teams with and without the intervention. The intervention is designed to be scalable so that it can be embedded into existing project-based courses. Our findings have important implications for the development of teamwork skills in engineering courses and provide evidence of a successful strategy that can be integrated into the existing engineering curriculum. © American Society for Engineering Education, 2016.

News Article | October 28, 2016

SAN ANTONIO, TX--(Marketwired - October 25, 2016) - Southwest Research Institute® (SwRI®) was awarded a contract valued at up to $39 million over the next five years to support the Naval Surface Warfare Center Dahlgren Division (NSWCDD). "NSWCDD is an extremely important customer for SwRI," said Errol Brigance, a director in SwRI's Applied Physics Division. "We have served this client over the past eight years and remain committed to providing effective technical solutions that meet contractual, schedule, and customer satisfaction requirements." An example of previous NSWCDD developments includes a device that projects an eye-safe laser beam up to several kilometers. SwRI has also developed biometric technology to collect various physiological characteristics and rapidly identify or screen individuals for comparisons to watch lists. Staff members will perform research, development, technical, and test activities under this contract. SwRI will address emerging needs in tactical and non-tactical systems associated with homeland security, anti-terrorism, mission assurance, force protection, unmanned systems, and related programs. This indefinite delivery, indefinite quantity contract allows SwRI to provide flexible and innovative solutions for complex problems. SwRI will apply the breadth and depth of resources and expertise to solve technical challenges put forth by NSWCDD. SwRI is an independent, nonprofit, applied research and development organization based in San Antonio, Texas, with nearly 2,800 employees and an annual research volume of $592 million. Southwest Research Institute and SwRI are registered marks in the U.S. Patent and Trademark Office. For more information about Southwest Research Institute, please visit or

Bowers D.,Naval Surface Warfare Center Dahlgren Division | Cardiel A.,Naval Surface Warfare Center Dahlgren Division | Curtis B.,Naval Surface Warfare Center Dahlgren Division | Montrief S.,Naval Surface Warfare Center Dahlgren Division
Naval Engineers Journal | Year: 2010

The Department of Defense has established guidelines and processes that have evolved over several decades for its acquisition community to ensure affordability of Navy ship and combat systems. A common challenge within the Navy combat systems cost-estimating community is the ability to utilize many of the guidelines and processes put in place by experienced entities such as the Government Accountability Office and the Naval Center for Cost Analysis because of the evolving environment associated with past, present, and future Navy combat systems. The purpose of this paper is to give a detailed insight on the challenges Naval Surface Warfare Center, Dahlgren Division (NSWCDD) cost estimators encounter when building cost models and estimates for the Navy. Many challenges include limited program definition because of emerging threats, new technologies, and collection and utilization of data to produce valid and credible estimates. Through combined knowledge, expertise, and evolving practice of incorporating lessons learned, the NSWCDD Cost Group has overcome many cost-estimating challenges. This paper will share the NSWCDD Cost Group's insights with the larger Navy community. Owing to the sensitive nature of cost, no specific estimates or project names are referenced. This paper is philosophical in nature and does not discuss mechanics of cost estimation in detail. © 2011, American Society of Naval Engineers.

Gutting B.,Naval Surface Warfare Center Dahlgren Division
Biosecurity and Bioterrorism | Year: 2014

Computational models describing bacterial kinetics were developed for inhalational anthrax in New Zealand white (NZW) rabbits following inhalation of Ames strain B. anthracis. The data used to parameterize the models included bacterial numbers in the airways, lung tissue, draining lymph nodes, and blood. Initial bacterial numbers were deposited spore dose. The first model was a single exponential ordinary differential equation (ODE) with 3 rate parameters that described mucociliated (physical) clearance, immune clearance (bacterial killing), and bacterial growth. At 36 hours postexposure, the ODE model predicted 1.7×107 bacteria in the rabbit, which agreed well with data from actual experiments (4.0×107 bacteria at 36 hours). Next, building on the single ODE model, a physiological-based biokinetic (PBBK) compartmentalized model was developed in which 1 physiological compartment was the lumen of the airways and the other was the rabbit body (lung tissue, lymph nodes, blood). The 2 compartments were connected with a parameter describing transport of bacteria from the airways into the body. The PBBK model predicted 4.9×107 bacteria in the body at 36 hours, and by 45 hours the model showed all clearance mechanisms were saturated, suggesting the rabbit would quickly succumb to the infection. As with the ODE model, the PBBK model results agreed well with laboratory observations. These data are discussed along with the need for and potential application of the models in risk assessment, drug development, and as a general aid to the experimentalist studying inhalational anthrax. © 2014, Mary Ann Liebert, Inc. 2014.

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