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Institution

Naval Surface Warfare Center

FacilityWashington D.C., District of Columbia, United States
About: Naval Surface Warfare Center is a facility organization based out in Washington D.C., District of Columbia, United States. It is known for research contribution in the topics: Sonar & Radar. The organization has 2855 authors who have published 3697 publications receiving 83518 citations. The organization is also known as: NSWC.


Papers
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Journal ArticleDOI
TL;DR: A data visualization technique for class cover catch digraphs which allows for the discovery of latent subclasses representing chemical concentration in the artificial nose data and two subtypes of acute lymphoblastic leukemia in the gene expression data and the associated conjectures pertaining to the geometry of these subclasses in their respective high-dimensional observation spaces are introduced.

35 citations

Journal ArticleDOI
TL;DR: In this paper, an average-value model is developed for the four-level diode-clamped converter which takes into account the active capacitor voltage balancing control, and the model performance prediction is compared to a detailed model and laboratory measurements on an 18 kW rectifier/inverter test system.
Abstract: Multilevel power converters have gained much attention in recent years due to their high power quality, low switching losses, and high-voltage capability. These advantages make the multilevel converter a candidate for the next generation of naval ship prolusion systems. Evaluation of these systems is typically assisted with a dynamic average-value models in order to rapidly predict system performance under several operating scenarios. In this paper, an average-value model is developed for the four-level diode-clamped converter which takes into account the active capacitor voltage balancing control. This model performance prediction is compared to a detailed model and laboratory measurements on an 18 kW rectifier/inverter test system.

35 citations

Journal ArticleDOI
TL;DR: In this paper, the thermal stability of a plastic bonded explosive containing an oxidizer cyclotetramethylene tetranitramine (HMX), binder and plasticizer was determined by dynamic differential scanning calorimetry (DSC) in sealed/unsealed sample pans and by thermogravimetry using the variable heating rate method.

35 citations

Journal ArticleDOI
TL;DR: In this article, a simple model for the analysis of microwave propagation in coupled complex cavities is presented, based on conservation of average energy in the steady state among multiple cavities, and the general model formulation is valid for both strong and weak couplings between the cavities caused by window materials, open apertures, closed and open hatches, and cable/pipe penetrations through bulkheads.
Abstract: A simple model for the analysis of microwave propagation in coupled complex cavities is presented. The cumulative build-up and full exchange of electromagnetic energy between coupled spaces are important issues for wireless systems in reverberant environments, such as below-deck compartments in ships and aircraft cabins and bays. Based on conservation of average energy in the steady state among multiple cavities, the general model formulation is valid for both strong and weak couplings between the cavities caused by window materials, open apertures, closed and open hatches, and cable/pipe penetrations through bulkheads. Application of the model is demonstrated in conjunction with measurements conducted in nested reverberation chambers in the laboratory and in the coupled main weapons bays of a fighter aircraft.

35 citations

Proceedings Article
26 Sep 2012
TL;DR: Through completely opportunistic use of the phone’s camera and other sensors, PlaceRaider constructs rich, three dimensional models of indoor environments that allow remote attackers to engage in remote reconnaissance and what the authors call “virtual theft.”
Abstract: As smartphones become more pervasive, they are increasingly targeted by malware. At the same time, each new generation of smartphone features increasingly powerful onboard sensor suites. A new strain of ‘sensor malware’ has been developing that leverages these sensors to steal information from the physical environment — e.g., researchers have recently demonstrated how malware can ‘listen’ for spoken credit card numbers through the microphone, or ‘feel’ keystroke vibrations using the accelerometer. Yet the possibilities of what malware can ‘see’ through a camera have been understudied. This paper introduces a novel ‘visual malware’ called PlaceRaider, which allows remote attackers to engage in remote reconnaissance and what we call “virtual theft.” Through completely opportunistic use of the phone’s camera and other sensors, PlaceRaider constructs rich, three dimensional models of indoor environments. Remote burglars can thus ‘download’ the physical space, study the environment carefully, and steal virtual objects from the environment (such as financial documents, information on computer monitors, and personally identifiable information). Through two human subject studies we demonstrate the e↵ectiveness of using mobile devices as powerful surveillance and virtual theft platforms, and we suggest several possible defenses against visual malware.

35 citations


Authors

Showing all 2860 results

NameH-indexPapersCitations
James A. Yorke10144544101
Edward Ott10166944649
Sokrates T. Pantelides9480637427
J. M. D. Coey8174836364
Celso Grebogi7648822450
David N. Seidman7459523715
Mingzhou Ding6925617098
C. L. Cocke513128185
Hairong Qi503279909
Kevin J. Hemker4923110236
William L. Ditto431937991
Carey E. Priebe434048499
Clifford George412355110
Judith L. Flippen-Anderson402056110
Mortimer J. Kamlet3910812071
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Performance
Metrics
No. of papers from the Institution in previous years
YearPapers
20233
20227
202172
202071
201982
201884