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Information Technology

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Displaying 1276 - 1300 of 4392

An efficient curve evolution algorithm for multiphase image segmentation

January 7, 2015
Author(s)
Gunay Dogan
We propose a novel iterative algorithm for segmentation of multiphase images by curve evolution. Specifically, we address a multiphase version of the Chan-Vese piecewise constant segmentation energy. Our algorithm is efficient: it is based on an explicit

Deployment-driven Security Configuration for Virtual Networks

December 28, 2014
Author(s)
Ramaswamy Chandramouli
Virtualized Infrastructures are increasingly deployed in many data centers. One of the key components of this virtualized infrastructure is the virtual network - a software-defined communication fabric that links together the various Virtual Machines (VMs)

Guidelines for Derived Personal Identity Verification (PIV) Credentials

December 19, 2014
Author(s)
Hildegard Ferraiolo, David A. Cooper, Salvatore Francomacaro, Andrew R. Regenscheid, Jason Mohler, Sarbari Gupta, William E. Burr
This recommendation provides technical guidelines for the implementation of standards-based, secure, reliable, interoperable PKI-based identity credentials that are issued by Federal departments and agencies to individuals who possess and prove control

Metrics of Security

December 15, 2014
Author(s)
Yi Cheng, Julia Deng, Jason Li, Scott DeLoach, Anoop Singhal, Xinming Ou
Discussion of challenges and ways of improving Cyber Situational Awareness dominated our previous chapters. However, we have not yet touched on how to quantify any improvement we might achieve. Indeed, to get an accurate assessment of network security and

Natural Scene Statistics in Infrared Images

December 12, 2014
Author(s)
Nicholas G. Paulter Jr., Todd R. Goodall, Alan C. Bovik
Natural Scene Statistics (NSS) produces powerful perceptually relevant tools that have been highly successful in image quality analysis of visible light images. These NSS capture statistical regularities in the physical world and thus can be applicable to

Formalizing Software Bugs

December 8, 2014
Author(s)
Irena Bojanova
Knowing what makes a software systems vulnerable to attacks is critical, as software vulnerabilities hurt security, reliability, and availability of the system as a whole. In addition, understanding how an adversary operates is essential to effective cyber

Effective and Scalable Uncertainty Evaluation for Large-Scale Complex System Applications

December 7, 2014
Author(s)
Kevin L. Mills, James J. Filliben, Junfei Xie, Yan Wan, Yi Zhou, Yu Lei
Effective uncertainty evaluation is a critical step toward real-time and robust decision-making for complex systems in uncertain environments. A Multivariate Probabilistic Collocation Method (M-PCM) was developed to effectively evaluate system uncertainty

Cryptographic Module Validation Program (CMVP)

December 1, 2014
Author(s)
Apostol T. Vassilev, Larry Feldman, Gregory A. Witte
The Cryptographic Module Validation Program (CMVP) validates cryptographic modules for compliance with Federal Information Processing Standard (FIPS) Publication 140-2, Security Requirements for Cryptographic Modules, and other cryptography based standards

Flat lens criterion by small-angle phase

December 1, 2014
Author(s)
Peter Ott, Mohammed H. Al Shakhs, Henri Lezec, Kenneth J. Chau
It is sometimes possible to image using a flat lens consisting of planar, uniform media. There is conceptual division between theoretical flat lens proposals, which require exotic properties such as negative index or counter-intuitive behavior such as
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