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Elastography: history, principles, and technique comparison
Abdominal Imaging, 2015Elastography is a relatively new imaging technology that creates images of tissue stiffness. It can be thought of an extension of the ancient technique of palpation but it gives better spatial localization information and is less subjective. Two main types of elastography are currently in use, strain elastography where the tissue displacement in ...
Brian S. Garra, Brian S. Garra
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A Comparison of the Paris Principles and the International Cataloguing Principles
Cataloging & Classification Quarterly, 2009After more than forty-five years of cataloging experience with the Paris Principles and their impact on the international sharing of bibliographic data, the process of replacing them with a wider and deeper set of International Cataloguing Principles has been completed. This article compares the scope, technological context, process of decision making,
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The Comparison Principle: Nonlinearity and Nonconvexity
2014This chapter introduces generalizations and applications of the presented approach prescribed earlier to nonlinear systems, nonconvex reachability sets and systems subjected to non-ellipsoidal constraints. The key element for these issues lies in the Comparison Principle for HJB equations which indicates schemes of approximating their complicated ...
Alexander B. Kurzhanski, Pravin Varaiya
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The Comparison and Tangency Principles
2013We introduce the comparison and the tangency principles that will be ones of the main tools employed in this book. They are obtained when writing locally a surface as the graph of a function z=u(x,y). Then the constancy of the mean curvature on the surface implies that u satisfies a second order partial differential equation of elliptic type.
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Comparison principles for Gaussian processes
2000Here we demonstrate how the study of Gaussian stochastic processes is possible by comparing their covariance functions. For this purpose, we need some preordering relations in the class Φ+(T) of real-valued positive functions given on a set T of parameters. As a rule, T will be a separable metric space.
Valeriĭ V. Buldygin +1 more
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Comparison as a Scientific Principle
1986The foregoing considerations have shown that every new notion is in a kind of opposition to those already present, and that those already present are not uninfluenced by the new one. This leads to a comparison of the old with the new, and this comparison makes its appearance quite spontaneously even in isolated observers and thinkers.
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Comparison principles in capillarity
1988Introductory remarks i) Comparison of Volumes 2) The CP Principle 3) Applications I 4) Further Applications 4bis) Isolated Singularities 5 6 7 8 9 i0 ii 12 13 14 15 The Touching Principle Monotone Symmetry (MS) Gradient Bounds from Curvature Bounds I Gradient Bounds from Curvature Bounds II Barriers by Normal Perturbation Principle of n th Order ...
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A Comparison of anonymization protection principles
2012 IEEE 13th International Conference on Information Reuse & Integration (IRI), 2012We do a survey of some of the most important principles of anonymization present in the literature. We identify different kinds of attacks that can be thrown against an anonymized dataset and give formulas for the maximum probability of success for each.
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Comparison between BAW and SAW sensor principles
Proceedings of International Frequency Control Symposium, 1998A comparison is given between piezoelectrically excited bulk acoustic wave (BAW) and surface acoustic wave (SAW) elements with respect to their primary sensitivity functions and principal capabilities for sensor applications. The importance of mode purity for high dynamic range sensors is emphasized. Characteristic sensor examples are reviewed, and the
A. Pohl +3 more
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Downward comparison principles in social psychology.
Psychological Bulletin, 1981The literature of social psychology contains a number of phenomena that appear to be paradoxical. For example, persons who face a threatening experience prefer to affiliate with threatened others rather than with nonthreatened others (Schachter, 1959), and persons in groups in which reward is equally distributed are less satisfied compared with persons
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