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Special Forums Cybersecurity IT Security RSS Cybersecurity in the Fifth Dimension Post 302198641 by Linux Bot on Friday 23rd of May 2008 11:20:02 AM
Old 05-23-2008
Cybersecurity in the Fifth Dimension

In the past, we viewed military operations from just four domains, land, air, sea and space. Today, there is another dimension that is just as real, and just as tangible, as those traditional "natural" domains, cyberspace. This domain of operations is just as critical to understand, protect and secure as our land, air, sea and outer space regions, making our mission as CISSPs more important than ever.
Illustrating this important shift in traditional thinking, the United States Air Force (USAF) is building a new major command responsible for cyberspace operations, scheduled for initial operations capabilities by October 1st, 2008. This new command, the Air Force Cyber Command, is a major milestone in the evolution and acceptance of the concept of modern, virtual military operations in cyberspace.
Cyberspace is unique in that it is a constructed, virtual operational dimension of communications (email, mobile phones, IM) entertainment (digital cable, mp3s, YouTube), transportation (car engine systems, air traffic control, FedEx), shopping (online stores, credit cards), medicine (equipment, medical records), social networks (Web2.0, LinkedIn, FaceBook, Twitter, Digg) and so much more.
According to Secretary of the Air Force Michael W. Wynne, "Cyberspace is a domain for projecting and protecting national power, for both strategic and tactical operations. In addition, "the U.S. Joint Chiefs of Staff defined cyberspace as characterized by the use of electronics and the electromagnetic spectrum to store, modify and exchange data via networked systems and associated physical infrastructures."
Regardless of how one defines cyberspace, IT security professional are involved at every level of computing operations, protecting these activities and securing this brave new world against criminals, pirates, and terrorists. Without a doubt, we can expect the miscreants who have traditionally plagued the land, sea, and air to find new ways to threaten us, operating when and where they can, menacing who they can, in cyberspace.
Hopefully, there is a fellow CISSP on the other end of the wire.


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DLASD0(l)								 )								 DLASD0(l)

NAME
DLASD0 - a divide and conquer approach, DLASD0 computes the singular value decomposition (SVD) of a real upper bidiagonal N-by-M matrix B with diagonal D and offdiagonal E, where M = N + SQRE SYNOPSIS
SUBROUTINE DLASD0( N, SQRE, D, E, U, LDU, VT, LDVT, SMLSIZ, IWORK, WORK, INFO ) INTEGER INFO, LDU, LDVT, N, SMLSIZ, SQRE INTEGER IWORK( * ) DOUBLE PRECISION D( * ), E( * ), U( LDU, * ), VT( LDVT, * ), WORK( * ) PURPOSE
Using a divide and conquer approach, DLASD0 computes the singular value decomposition (SVD) of a real upper bidiagonal N-by-M matrix B with diagonal D and offdiagonal E, where M = N + SQRE. The algorithm computes orthogonal matrices U and VT such that B = U * S * VT. The singu- lar values S are overwritten on D. A related subroutine, DLASDA, computes only the singular values, and optionally, the singular vectors in compact form. ARGUMENTS
N (input) INTEGER On entry, the row dimension of the upper bidiagonal matrix. This is also the dimension of the main diagonal array D. SQRE (input) INTEGER Specifies the column dimension of the bidiagonal matrix. = 0: The bidiagonal matrix has column dimension M = N; = 1: The bidiagonal matrix has column dimension M = N+1; D (input/output) DOUBLE PRECISION array, dimension (N) On entry D contains the main diagonal of the bidiagonal matrix. On exit D, if INFO = 0, contains its singular values. E (input) DOUBLE PRECISION array, dimension (M-1) Contains the subdiagonal entries of the bidiagonal matrix. On exit, E has been destroyed. U (output) DOUBLE PRECISION array, dimension at least (LDQ, N) On exit, U contains the left singular vectors. LDU (input) INTEGER On entry, leading dimension of U. VT (output) DOUBLE PRECISION array, dimension at least (LDVT, M) On exit, VT' contains the right singular vectors. LDVT (input) INTEGER On entry, leading dimension of VT. SMLSIZ (input) INTEGER On entry, maximum size of the subproblems at the bottom of the computation tree. IWORK INTEGER work array. Dimension must be at least (8 * N) WORK DOUBLE PRECISION work array. Dimension must be at least (3 * M**2 + 2 * M) INFO (output) INTEGER = 0: successful exit. < 0: if INFO = -i, the i-th argument had an illegal value. > 0: if INFO = 1, an singular value did not converge FURTHER DETAILS
Based on contributions by Ming Gu and Huan Ren, Computer Science Division, University of California at Berkeley, USA LAPACK version 3.0 15 June 2000 DLASD0(l)
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