66,184 research outputs found
Graphical method for analyzing digital computer efficiency
Analysis method utilizes graph-theoretic approach for evaluating computation cost and makes logical distinction between linear graph of a computation and linear graph of a program. It applies equally well to other processes which depend on quatitative edge nomenclature and precedence relationships between edges
A topological approach to computer-aided sensitivity analysis
Sensitivities of any arbitrary system are calculated using general purpose digital computer with available software packages for transfer function analysis. Sensitivity shows how element variation within system affects system performance. Signal flow graph illustrates topological system behavior and relationship among parameters in system
Four functions of mens rea
Everyone agrees that mens rea is relevant to fault. The maxim actus non fit reus nisi mens sit rea has been around for centuries.1 According to foundational principles of the criminal law, it is normally not enough to support a conviction that D perpetrates the actus reus. Neither should it be. Causing harm to another person may be unfortunate, but the moral turpitude associated with a criminal conviction requires some element of fault. And to show that, we need mens rea
Inducing breach of contract: one tort or two?
IT is said to be a tort for D intentionally to induce C to break C’s contract with P. Where this occurs, P has an action in tort against D, quite apart from P’s action for breach of contract against C. But the rationale for this tort is controversial, and its legitimacy has been doubted by a number of commentators
Gravastars and Black Holes of Anisotropic Dark Energy
Dynamical models of prototype gravastars made of anisotropic dark energy are
constructed, in which an infinitely thin spherical shell of a perfect fluid
with the equation of state divides the whole spacetime
into two regions, the internal region filled with a dark energy fluid, and the
external Schwarzschild region. The models represent "bounded excursion" stable
gravastars, where the thin shell is oscillating between two finite radii, while
in other cases they collapse until the formation of black holes. Here we show,
for the first time in the literature, a model of gravastar and formation of
black hole with both interior and thin shell constituted exclusively of dark
energy. Besides, the sign of the parameter of anisotropy () seems to
be relevant to the gravastar formation. The formation is favored when the
tangential pressure is greater than the radial pressure, at least in the
neighborhood of the isotropic case ().Comment: 16 pages, 8 figures. Accepted for publication in Gen. Rel. Gra
Dirty, Skewed, and Backwards: The Smectic - Phase Transition in Aerogel
We study the smectic AC transition in anisotropic and uniaxial disordered
environments, e.g., aerogel with an external field. We find very strange
behavior of translational correlations: the low-temperature, lower-symmetry
Smectic C phase is itless translationally ordered than the it high-temperature,
higher-symmetry Smectic A phase, with short-ranged and algebraic translational
correlations, respectively. Specifically, the A and C phase belong to the
quasi-long-ranged translationally ordered " XY Bragg glass '' and short-ranged
translationally ordered " m=1 Bragg glass '' phase, respectively. The AC phase
transition itself belongs to a new universality class, whose fixed points and
exponents we find in a d=5-epsilon expansion
Computer evaluation of network performance by a topological flowgraph technique
Algorithm for computer evaluation of linear network by topological flow techniqu
Efficiency in the use of a computer for network analysis
Efficiency in use of digital computer for network analysi
Theory of enhanced performance emerging in a sparsely-connected competitive population
We provide an analytic theory to explain Anghel et al.'s recent numerical
finding whereby a maximum in the global performance emerges for a
sparsely-connected competitive population [Phys. Rev. Lett. 92, 058701 (2004)].
We show that the effect originates in the highly-correlated dynamics of
strategy choice, and can be significantly enhanced using a simple modification
to the model.Comment: This revised version will appear in PRE as a Rapid Com
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