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Dawidowicz E.,CERDEC
SAE International Journal of Alternative Powertrains | Year: 2012

The effectiveness of elements comprising a hybrid electric power generating system was studied. The wind and photovoltaic renewable resources served as integral components of the hybrid systems configuration. A HMMWV towable trailer system provided an intermediary basis for formulation of methodology needed for optimization of power generation and energy storage capacity constrained by cost, size and weight of the system. The methodology employed in this paper is scalable from kilowatts to megawatts or from man portable systems to significantly larger systems which can be housed in 40 foot ISO containers. Copyright © 2012 SAE International.


Rittenbach T.,Linquest | Satake H.,SAIC | Schoonmaker D.,Rockwell Collins | Cunningham J.,Nexagen Networks | Duffe T.,CERDEC
Proceedings - IEEE Military Communications Conference MILCOM | Year: 2013

The Government Reference Architecture (GRA) is a reference architecture for modularized communications terminals. To date, the definitions in this reference architecture have centered upon the control plane and the data plane for software defined radios. This paper details the ongoing effort to mature the reference architecture components needed for basic operation and development of a methodology for rapidly validating the interfaces with remotely distributed technology partners and consortia members. Three GRA modules will be validated - the common Terminal Control Module, COTS Modem Adapter Module, and the Terrestrial Interface Module. Contractors will develop a set of command sequences and functions required for all the radios so that the single terminal controller can control all radios via the OMR GR VPN (Virtual Private Network). The goal of the OMR (Open Modular Radio) GRA VPN is to enable layer 2 connectivity among various geographical locations to support a distributed GRA virtual terminal test bed. Two simple but fundamental use cases are demonstrated and performance and lessons learned from the distributed test bed environment are described. Future, more complex use cases are planned by extending the Control Plane VLAN switching to Data Plane VLAN switching © 2013 IEEE.


DoD Future Warfighter Performance, Capabilities and Survivability to be the Focus of Upcoming Senior Level Symposium for DoD, Industry and Academia On April 25-26, 2017, senior leaders within the U.S. Military Services, DoD, Industry and Academia will convene in Alexandria, VA, for two days of off the record briefings and senior level discussions at Defense Strategies Institute’s "Town Hall" Future Warfighter Symposium. The Symposium will take an integrated approach, spanning multiple capabilities and research areas that ultimately combine on the dismounted Warfighter. Washington, DC, March 01, 2017 --( 1. Advanced materials and fabrics to aide in clothing efficiencies 2. Wearable robotics and advancements in human-machine integration 3. Next-gen research in personal protective equipment / exoskeletons: malleable fabric exosuits, and "liquid armour" and buoyant body armor 4. Energy and Power for the dismounted Soldier: energy harvesting capabilities, improved battery power (supplying, harnessing and generating power) 5. Research and technologies in human factors to improve Warfighter performance 6. Integrating biometric sensors and monitoring physiological data 7. Augmented reality technology and tactical operations “We have created a Symposium that will bring together a variety of stakeholders in order to build out two days of discussion and dialogue that spans a variety of disciplines involved in enhancing the capabilities and performance of our future Warfighters,” stated Monica Mckenzie, Senior Partner, Defense Strategies Institute. Several speakers include: *BG Brian Mennes, USA, Director, Joint and Integration, G-8, HQDA *COL Ed Barker, USA, PM Soldier Warrior, PEO Soldier *Dr. John Pazik, SES, Department Head, Expeditionary Maneuver Warfare and Combating Terrorism Department, ONR *COL James Miller, USA, Director Joint Acquisition Task Force (JATF) TALOS, USSOCOM *Col Brian L. Magnuson, USMC, Director, Expeditionary Energy Office, HQMC *Dr. Rajesh Naik, SES, Chief Scientist, 711th Human Performance Wing, Air Force Research Laboratory *Dr. Mike LaFiandra, Chief Scientist (A), Human Research and Engineering Directorate, ARL *COL Richard Malish, USA, Commander, U.S. Army Aeromedical Research Laboratory *Dr. Conor Walsh, BioDesign Lab, Harvard University *Mr. Cory Goetz, Power and Energy Directorate, CP&ID, CERDEC Seating is limited – In order to allow for actionable discussion and dialogue amongst speaker and attendees, seating will be limited. Register now to reserve your seat. Active military, government and State personnel attend complimentary. Anyone interested in participating in the Summit can go to Defense Strategies Institute's website at http://futurewarfighter.dsigroup.org for more information or contact Lisa Madison at lmadison@dsigroup.org 1-917-435-1266 Recognizing the great sacrifice that our men and women of the Armed Services have endured, DSI supports our Veteran’s and severely injured Service men and women and their families through our direct charitable donations. To learn more, please visit http://dsigroup.org/giving-back About DSI: Operating guidelines: In order to maintain our non-partisan stance, DSI receives no financial investment for operating costs from any outside organization, individual or group. Washington, DC, March 01, 2017 --( PR.com )-- Viewing the Warfighter as a “system of systems” the Symposium will cover topics such as:1. Advanced materials and fabrics to aide in clothing efficiencies2. Wearable robotics and advancements in human-machine integration3. Next-gen research in personal protective equipment / exoskeletons: malleable fabric exosuits, and "liquid armour" and buoyant body armor4. Energy and Power for the dismounted Soldier: energy harvesting capabilities, improved battery power (supplying, harnessing and generating power)5. Research and technologies in human factors to improve Warfighter performance6. Integrating biometric sensors and monitoring physiological data7. Augmented reality technology and tactical operations“We have created a Symposium that will bring together a variety of stakeholders in order to build out two days of discussion and dialogue that spans a variety of disciplines involved in enhancing the capabilities and performance of our future Warfighters,” stated Monica Mckenzie, Senior Partner, Defense Strategies Institute.Several speakers include:*BG Brian Mennes, USA, Director, Joint and Integration, G-8, HQDA*COL Ed Barker, USA, PM Soldier Warrior, PEO Soldier*Dr. John Pazik, SES, Department Head, Expeditionary Maneuver Warfare and Combating Terrorism Department, ONR*COL James Miller, USA, Director Joint Acquisition Task Force (JATF) TALOS, USSOCOM*Col Brian L. Magnuson, USMC, Director, Expeditionary Energy Office, HQMC*Dr. Rajesh Naik, SES, Chief Scientist, 711th Human Performance Wing, Air Force Research Laboratory*Dr. Mike LaFiandra, Chief Scientist (A), Human Research and Engineering Directorate, ARL*COL Richard Malish, USA, Commander, U.S. Army Aeromedical Research Laboratory*Dr. Conor Walsh, BioDesign Lab, Harvard University*Mr. Cory Goetz, Power and Energy Directorate, CP&ID, CERDECSeating is limited –In order to allow for actionable discussion and dialogue amongst speaker and attendees, seating will be limited. Register now to reserve your seat. Active military, government and State personnel attend complimentary.Anyone interested in participating in the Summit can go to Defense Strategies Institute's website at http://futurewarfighter.dsigroup.org for more information or contact Lisa Madison at lmadison@dsigroup.org 1-917-435-1266Recognizing the great sacrifice that our men and women of the Armed Services have endured, DSI supports our Veteran’s and severely injured Service men and women and their families through our direct charitable donations. To learn more, please visit http://dsigroup.org/giving-backAbout DSI:Operating guidelines: In order to maintain our non-partisan stance, DSI receives no financial investment for operating costs from any outside organization, individual or group.


ARLINGTON, Va.--(BUSINESS WIRE)--CACI International Inc (NYSE: CACI) announced today that it was awarded a $31 million contract to support modeling and simulation technology for the U.S. Army Research, Development, and Engineering Command’s (RDECOM) Communications-Electronics Research, Development, and Engineering Center (CERDEC) Night Vision and Electronic Sensors Directorate (NVESD). This three-year task order, awarded under the R2-3G contract vehicle, represents new business in CACI’s Surveillance and Reconnaissance market area. CERDEC NVESD conducts research and development of advanced night vision and other sensor technologies, such as infrared weapon sights, and long-range surveillance and target acquisition systems, which enhance our Armed Forces’ operational advantage in daytime, nighttime, and limited visibility conditions. Under this contract, CACI will support the development of realistic electro-optic/infrared and SIGINT payload modeling and simulation capabilities and training systems. These training systems will enhance the readiness of the Army’s Airborne Intelligence, Surveillance, and Reconnaissance (A-ISR) tactical units, resulting in improved situational awareness to Army brigade combat teams. The company will also provide pilots and trainers to develop and execute A-ISR programs of instruction. John Mengucci, CACI’s Chief Operating Officer and President of U.S. Operations, said, “As a pioneer in modeling and simulation technology, CACI will leverage our extensive subject matter expertise and knowledge of this customer’s mission applications to develop highly realistic simulations in support of Army airborne intelligence, surveillance, and reconnaissance operations.” According to CACI President and Chief Executive Officer Ken Asbury, “With this award for new work, CACI is proud to expand our ongoing partnership with the U.S. Army’s Night Vision and Electronic Sensors Directorate. It continues CACI’s commitment to providing our government customers with the tools and resources to gather actionable intelligence for military decision-makers.” CACI provides information solutions and services in support of national security missions and government transformation for Intelligence, Defense, and Federal Civilian customers. A Fortune magazine World’s Most Admired Company in the IT Services industry, CACI is a member of the Fortune 1000 Largest Companies, the Russell 2000 Index, and the S&P SmallCap600 Index. CACI’s sustained commitment to ethics and integrity defines its corporate culture and drives its success. With approximately 20,000 employees worldwide, CACI provides dynamic career opportunities for military veterans and industry professionals to support the nation’s most critical missions. Join us! www.caci.com. There are statements made herein which do not address historical facts, and therefore could be interpreted to be forward-looking statements as that term is defined in the Private Securities Litigation Reform Act of 1995. Such statements are subject to factors that could cause actual results to differ materially from anticipated results. The factors that could cause actual results to differ materially from those anticipated include, but are not limited to, the risk factors set forth in CACI’s Annual Report on Form 10-K for the fiscal year ended June 30, 2016, and other such filings that CACI makes with the Securities and Exchange Commission from time to time. Any forward-looking statements should not be unduly relied upon and only speak as of the date hereof.


Perera R.D.W.,CERDEC | Anand S.,Stevens Institute of Technology | Subbalakshmi K.P.,Stevens Institute of Technology | Chandramouli R.,Stevens Institute of Technology
Proceedings - IEEE Military Communications Conference MILCOM | Year: 2010

We study the temporal behavior of messages arriving in a social network. We specifically study the tweets and re-tweets sent to president Barack Obama on Twitter. We characterize the inter-arrival times between the tweets, the number of re-tweets and the spatial coordinates (latitude, longitude) of the users who sent the tweets. The modeling of the arrival process of tweets in Twitter can be applied to predict co-ordinated user behavior in social networks. While there is sufficient literature on social networks that present large volumes of collected data, the modeling and characterization of the data have been rarely discussed. The available data are usually very expensive and not comprehensive. Here, we develop a software architecture that uses a Twitter application program interface (API) to collect the tweets sent to specific users. We then extract the user ids and the exact time-stamps of the tweets. We use the collected data to characterize the inter-arrival times between tweets and the number of re-tweets. Our studies indicate that the arrival process of new tweets to a user can be modeled as a Poisson Process while the number of re-tweets follow a geometric distribution. Our data collection architecture is operating system (OS) independent. The results obtained in this research can be applied to study correlations between patterns of user behavior and their locations. ©2010 IEEE.


Xiao Z.,University of Maryland University College | Goldsman N.,University of Maryland University College | Dhar N.K.,CERDEC
International Conference on Simulation of Semiconductor Processes and Devices, SISPAD | Year: 2015

Germanium can be transformed from an indirect bandgap material to a direct bandgap material by applying strain. Unstrained Ge has an indirect bandgap of 0.66eV (at L point) and a direct bandgap of 0.8eV [1]. When strain is applied, the band structure of germanium will be altered. When the strain is tensile, both the indirect and the direct bandgaps tend to decrease. Under certain strains, the direct bandgap will be pushed even below the indirect bandgap, at which point, germanium becomes a direct bandgap material. The value of the bandgap when Ge transforms from an indirect to direct semiconductor upon the application of strain is named the Bandgap Transition Point (BTP), and the required strain is named STP (Strain at Transition Point). Previous research has been done on uniaxial and biaxial strained germanium on the conventional orientations. In this work, calculations are made on the effect of applying tensile stress in arbitrary orientations based on nonlocal empirical pseudopotential method (EPM) [2] [3]. We also use cubic spline interpolation of the atomic form factors [4] [5], as well as the rules for strain translation [6], to determine how the Indirect-Direct transformation phenomenon of germanium changes with respect to virtually any orientation of the crystal planes. In addition, we calculated the optimal orientation and the effect that departure from this optimal orientation has on the bandgap. © 2015 IEEE.


Ghosh A.,Ericsson AB | Li S.-W.,Ericsson AB | Chiang C.J.,Ericsson AB | Chadha R.,Ericsson AB | And 4 more authors.
Proceedings - IEEE Military Communications Conference MILCOM | Year: 2010

Developing distributed applications for MANETs is a complex task due to the latter's bandwidth constrained nature. Further, in tactical MANETs, there is a need to prioritize traffic generated by distributed applications so that high priority traffic gets preferential access to the bandwidth constrained communication medium. Finally, applications must be designed to accommodate network bandwidth and traffic loads that vary with time. It is unrealistic to expect individual application developers to be able to accommodate these constraints which essentially cut across multiple applications that share the MANET. In this paper we describe a communication middleware system: QoS-aware Adaptive Middleware (QAM) that shields distributed application developers from the complexities of tactical MANETs1. QAM resolves the problem of bandwidth contention between multi-priority applications by providing an adaptive, priority aware, middleware layer that acts as an intermediary between an application and the network protocols it uses. QAM adapts to current network conditions by providing a reliable data transfer mechanism that is capable of adapting data transfer rates in response to changing network conditions. The adaptations performed by QAM attempt to limit the use of network bandwidth by applications when network bandwidth is diminished. Moreover, QAM limits network use more aggressively for lower priority applications than for higher priority applications, thus giving preferential treatment to the latter. Existing network layer mechanisms such as priority queuing and bandwidth provisioning are either inadequate or inapplicable for addressing traffic prioritization needs in tactical MANETs. QAM provides capabilities that are complementary to existing QoS mechanisms and is better suited for tactical MANETs. Our paper provides a description of the QAM architecture and early evaluations of a QAM prototype. ©2010 IEEE.


Manousakis K.,Ericsson AB | Young K.,Ericsson AB | Graff C.,CERDEC | Patel M.,CERDEC
Proceedings - IEEE Military Communications Conference MILCOM | Year: 2010

Topology control is one of the prime factors affecting overall network performance. The characteristics of the network topology can also greatly impact the performance of other network functionalities, like MAC, routing and security. Traditionally, the objective of topology control approaches has been the formation of power efficient topologies by minimizing the transmission power assignments to radio interfaces, for achieving a connected network. In this paper we present a more versatile approach that is capable of forming robust k-connected networks, while simultaneously minimizing end-to-end delay and transmission power assignments. The approach is based on the combination of general stochastic approximation and min-cut algorithms. The results indicate the effectiveness of the approach, which provably converges to k-connected networks that are also power efficient and end-to-end delay aware. ©2010 IEEE.


Huang G.C.,University of Hawaii at Manoa | Iskander M.F.,University of Hawaii at Manoa | Hoque M.,CERDEC | Goodall S.R.,CERDEC | Bocskor T.,CERDEC
IEEE Antennas and Wireless Propagation Letters | Year: 2015

To help with long range coverage, minimal interference, and reduced energy requirements, recent studies have incorporated directional antenna arrays in wireless communication networks. In this letter, a broadband, dual polarization, and very narrow beam (< 11°) antenna array system based on the Long Slot Antenna (LSA) array technology has been developed, prototyped and tested. The complex feeding structure of the antenna array was simplified with a novel aperture metallic patch design using 50 - 60Ω microstrip lines. HFSS simulation and experimental beamwidth results are in excellent agreement (< 1° difference). © 2015 IEEE.


Satake H.,SAIC | Skutt T.,Wind River | Sherman M.,BAE Systems | Eagleson W.,LGS Innovations | And 2 more authors.
Proceedings - IEEE Military Communications Conference MILCOM | Year: 2013

The Government Reference Architecture (GRA) is a reference architecture for modularized communications terminals. To date, the definitions in this reference architecture have centered upon the control plane and the data plane for software defined radios. This paper details the reference architecture components needed to extend the architecture to support tactical wireless base stations that can support different networks, potentially from different vendors, connected to the communications terminal. The advantages of utilizing commercial LTE (Long Term Evolution) cellular technology are described. Use of GRA to deploy LTE equipment for a military tactical base station is viewed as a near term application. As a long term objective, a plan for leveraging the security and integrity advantages of component based system design is described to make systems employing commercial cellular components more appropriate for military environments. The result is a communications node capable of supporting LOS (Line of Sight), SATCOM and wireless base stations, managing the flow of data going over varying bandwidth backhaul links or tactical radios, and all controlled locally or remotely via a single network manager. This paper provides a conceptual architecture for a fully interoperable and inter-dependent architecture supporting legacy and future communications equipment. © 2013 IEEE.

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