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Detection of LSB Steganography via Sample Pair Analysis [chapter]

Sorina Dumitrescu, Xiaolin Wu, Zhe Wang
2002 Lecture Notes in Computer Science  
The new steganalytic approach is based on some statistical measures of sample pairs that are highly sensitive to LSB embedding operations. The resulting detection algorithm is simple and fast.  ...  It is shown that the length of hidden message embedded in the least significant bits of signal samples can be estimated with relatively high precision.  ...  Then in Section 3 we use the structure of the finite-state machine to establish quadratic equations of the length of embedded message in terms of the cardinalities of trace multisets.  ... 
doi:10.1007/3-540-36415-3_23 fatcat:uk53mhf7mvecjpux3wkpe2drny

Traces on simple AF C∗-algebras

Bruce E Blackadar
1980 Journal of Functional Analysis  
The relations between the set of traces on a simple approximately finite dimensional C*-algebra A and the algebraic and geometric properties of the Elliott dimension group K,(A) are studied.  ...  It is shown that every metrizable Choquet simplex occurs as the set of normalized traces of a simple unital ,4F algebra.  ...  Section 3 is a study of the traces on a simple unital AF algebra If -4 is a P-algebra, let T(A) be the set of normalized finite traces on /I, and ET(A) the extreme points of T(A).  ... 
doi:10.1016/0022-1236(80)90062-2 fatcat:3d7c5sjc3zaqtkgy4cyoo3k4xq

Detection of LSB steganography via sample pair analysis

S. Dumitrescu, Xiaolin Wu, Zhe Wang
2003 IEEE Transactions on Signal Processing  
The new steganalytic approach is based on some statistical measures of sample pairs that are highly sensitive to LSB embedding operations. The resulting detection algorithm is simple and fast.  ...  It is shown that the length of hidden message embedded in the least significant bits of signal samples can be estimated with relatively high precision.  ...  Then in Section 3 we use the structure of the finite-state machine to establish quadratic equations of the length of embedded message in terms of the cardinalities of trace multisets.  ... 
doi:10.1109/tsp.2003.812753 fatcat:3e5uwgsozjea7adw7fr5x4ipfa

Fault Propagation by Equation Solving [chapter]

Khaled El-Fakih, Nina Yevtushenko
2004 Lecture Notes in Computer Science  
The composite system is represented as two communicating finite state machines (FSMs), an embedded component FSM, and a context FSM that models the remaining part of the system and which is assumed to  ...  In this paper we use equation solving for translating internal tests derived for a component embedded within a composite system into external tests defined over the external alphabets of the system.  ...  As usual, to represent the set of traces of an FSM we use the notion of a finite automaton.  ... 
doi:10.1007/978-3-540-30232-2_12 fatcat:7c25sjjia5gabinyu62aw7mlcy

Factorizable maps and traces on the universal free product of matrix algebras [article]

Magdalena Musat, Mikael Rørdam
2019 arXiv   pre-print
The latter set is shown to be equal to the set of hyperlinear traces on M_n * M_n. We finally show that each metrizable Choquet simplex is a face of the simplex of tracial states on M_n * M_n.  ...  are parametrized by traces in the closure of the finite dimensional ones.  ...  Acknowledgements: We thank James Gabe for fruitful discussions about traces on residually finite dimensional C * -algebras, Erik Alfsen for sharing with us his insight on the Poulsen  ... 
arXiv:1903.10182v4 fatcat:3blia7lg3rc5tl7fnroo6lde5e

Hilbertian versus Hilbert W*-modules, and applications to L^2- and other invariants [article]

Michael Frank
2000 arXiv   pre-print
The results are of interest to specialists in operator algebras and global analysis.  ...  Hilbert(ian) A-modules over finite von Neumann algebras A with a faithful normal trace state (from global analysis) and Hilbert W*-modules over A (from operator algebra theory) are compared, and a categorical  ...  Troitsky for the fruitful discussions, the exchange of ideas and the continuous support during the recent years of collaboration.  ... 
arXiv:math/0003185v2 fatcat:3euwd47bdjburmpfxcxhi4huve

FRAÏSSÉ LIMITS OF C*-ALGEBRAS

CHRISTOPHER J. EAGLE, ILIJAS FARAH, BRADD HART, BORIS KADETS, VLADYSLAV KALASHNYK, MARTINO LUPINI
2016 Journal of Symbolic Logic (JSL)  
AbstractWe realize the Jiang-Su algebra, all UHF algebras, and the hyperfinite II1factor as Fraïssé limits of suitable classes of structures.  ...  As a consequence of our analysis we deduce Ramsey-theoretic results about the class of full-matrix algebras.  ...  A language L consists of a set of predicate symbols and a set of function symbols.  ... 
doi:10.1017/jsl.2016.14 fatcat:v3uegqkonzepvivwwepeagznwi

Diophantine approximation on Veech surfaces

Pascal Hubert, Thomas A. Schmidt
2012 Bulletin de la Société Mathématique de France  
That is, we show the finiteness of his Minkowski constant for any compact translation surface.  ...  The saddle connection continued fractions then allow one to recognize certain transcendental directions by their developments.  ...  Suppose that Γ ⊂ PSL 2 (K) contains a parabolic element 1 and set c 1 = min{(| σ(λ)/λ) | )} , where σ varies through the set of field embeddings of K into R.  ... 
doi:10.24033/bsmf.2636 fatcat:4cbyi6faina5tmbbxfct4lf4tm

Warpage behavior analysis in package processes of embedded copper substrates

Yeong-Maw Hwang, Tsang-Hung Ou, Wei-Hung Su, Gow-Yi Tzou
2017 MATEC Web of Conferences  
In this paper, a finite element software ANSYS is used to model the embedded copper trace substrate and simulate the thermal and deformation behaviors of the substrate during the heating package process  ...  Thermal bonding process of copper pillar flip chip packages is a new bonding process in packaging technology, especially for substrates with embedded copper trace.  ...  Conclusions In this paper, a finite element modelling was proposed to simulate the thermal warpage behavior of a substrate with embedded copper traces.  ... 
doi:10.1051/matecconf/201712300014 fatcat:ojkdsfwi4babfnvtkgh6nq7j44

An elementary approach to sofic groupoids [article]

Luiz Cordeiro
2017 arXiv   pre-print
We show that sofcity can be determined in terms of the full group alone, answering a question by Conley, Kechris and Tucker-Drob.  ...  We describe sofic groupoids in elementary terms and prove several permanence properties for sofcity.  ...  Take finite sets X, Y and isometric embeddings π H : [[H]] → [[X 2 ]] and π K : [[K]] → [[Y 2 ]].  ... 
arXiv:1708.08023v1 fatcat:x4y4b6ieonawhohbsv2ccthv7a

FSM Test Translation Through Context [chapter]

Khaled El-Fakih, Alexandre Petrenko, Nina Yevtushenko
2006 Lecture Notes in Computer Science  
The system is represented as two communicating complete deterministic finite state machines, an embedded component machine to be tested and a context machine that represents the remaining part of the system  ...  In this paper, we define a formal approach for translating internal tests derived for a component embedded within a modular system into external tests defined over the external observable alphabets of  ...  Definition 3.A test suite is a finite set of tests.  ... 
doi:10.1007/11754008_16 fatcat:r7qni2clpnemblxp3ztwtnkiry

Diophantine approximation on Veech surfaces [article]

Pascal Hubert, Thomas A. Schmidt
2010 arXiv   pre-print
That is, we show the finiteness of his Minkowski constant for any compact translation surface.  ...  The saddle connection continued fractions then allow one to recognize certain transcendental directions by their developments.  ...  Suppose that Γ ⊂ PSL 2 (K) contains a parabolic element 1 λ 0 1 , and set c 1 = min{(| σ(λ)/λ) | )} , where σ varies through the set of field embeddings of K into R.  ... 
arXiv:1010.3475v1 fatcat:tlnbyyqywjhftepavm2q7aoeqa

An outline of polar spaces: basics and advances [article]

Ilaria Cardinali
2013 arXiv   pre-print
Then we introduce and report on the state of the art on the following research topics: polar spaces of infinite rank, embedding polar spaces in groups and projective embeddings of dual polar spaces.  ...  This paper is an extended version of a series of lectures on polar spaces given during the workshop and conference 'Groups and Geometries', held at the Indian Statistical Institute in Bangalore in December  ...  Then the sets of totally isotropic points and lines of PG(V) with respect to φ is a non-degenerate ordinary polar space (of finite rank).  ... 
arXiv:1303.5764v1 fatcat:djip4o623ndy7ajcgwzkjljlcy

Local Traces: An Over-Approximation of the Behaviour of the Proteins in Rule-Based Models [chapter]

Jérôme Feret, Kim Quyên Lý
2016 Lecture Notes in Computer Science  
This work has been motivated by models written by Héctor Medina, and by Nathalie Théret and Jean Cocquet.  ...  We deeply thank them, as well as Pierre Boutillier, Ioana Cristescu, Vincent Danos, Walter Fontana, Russ Harmer, Jean Krivine, Jonathan Laurent, and Jean Yang, for fruitful discussions.  ...  We denote as T Q,L the set of all the traces over the sets Q and L.  ... 
doi:10.1007/978-3-319-45177-0_8 fatcat:wl7rmtmkwvf7jmagg5qyewiivq

On arithmetic Fuchsian groups and their characterizations

Slavyana Geninska
2014 Annales de la Faculté des Sciences de Toulouse  
The trace set of Γ is defined to be Tr(Γ) := {tr(g) | g ∈ Γ} and encodes in a natural way the set of lengths of closed geodesics on M .  ...  Luo and Sarnak pointed out large scale properties of the behaviour of the trace set of arithmetic Fuchsian groups.  ... 
doi:10.5802/afst.1437 fatcat:g7wewgpzgrbjvlbm3rvhsgugb4
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