492 research outputs found
Introducing Exclusion Logic as a Deontic Logic
This paper introduces Exclusion Logic - a simple modal logic without negation or disjunction. We show that this logic has an efficient decision procedure. We describe how Exclusion Logic can be used as a deontic logic. We compare this deontic logic with Standard Deontic Logic and with more syntactically restricted logics
In Situ Corrosion Studies on the Battleship USS Arizona
U.S. National Park Service Submerged Resources Center archaeologists and University of Nebraska-Lincoln metallurgists are assessing hull corrosion by drilling through accumulated concretions and measuring pH and corrosion potentials. Concretion samples are being analyzed to determine the role of microbes in the corrosion process, identify chemical species, and measure electrical and physical properties. The lowest values of pH and E corr occur at the metal/concretion interface. Analysis suggests a variable corrosion rate supported by hydrogen discharge and/or oxygen reduction inside the concretion
On the algebraic structure of conditional events: 13th European conference, ECSQARU 2015, Compiègne, France, July 15-17, 2015.
This paper initiates an investigation of conditional measures as simple measures on conditional events. As a first step towards this end we investigate the construction of conditional algebras which allow us to distinguish between the logical properties of conditional events and those of the conditional measures which we can be attached to them. This distinction, we argue, helps us clarifying both concepts
Being More Realistic About Reasons: On Rationality and Reasons Perspectivism
This paper looks at whether it is possible to unify the
requirements of rationality with the demands of normative
reasons. It might seem impossible to do because one depends
upon the agent’s perspective and the other upon features of
the situation. Enter Reasons Perspectivism. Reasons
perspectivists think they can show that rationality does consist
in responding correctly to reasons by placing epistemic
constraints on these reasons. They think that if normative
reasons are subject to the right epistemic constraints, rational
requirements will correspond to the demands generated by
normative reasons. While this proposal is prima facie plausible,
it cannot ultimately unify reasons and rationality. There is no
epistemic constraint that can do what reasons perspectivists
would need it to do. Some constraints are too strict. The rest
are too slack. This points to a general problem with the
reasons-first program. Once we recognize that the agent’s
epistemic position helps determine what she should do, we
have to reject the idea that the features of the agent’s situation
can help determine what we should do. Either rationality
crowds out reasons and their demands or the reasons will make
unreasonable demands
Safety, the Preface Paradox and Possible Worlds Semantics
This paper contains an argument to the effect that possible worlds semantics renders
semantic knowledge impossible, no matter what ontological interpretation is given
to possible worlds. The essential contention made is that possible worlds semantic
knowledge is unsafe and this is shown by a parallel with the preface paradox
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