Results 41 to 50 of about 9,538 (181)

On Properties of Update Sequences Based on Causal Rejection

open access: yes, 2001
We consider an approach to update nonmonotonic knowledge bases represented as extended logic programs under answer set semantics. New information is incorporated into the current knowledge base subject to a causal rejection principle enforcing that, in ...
Eiter, T.   +3 more
core   +2 more sources

Nonmonotonic Reasoning and Causation: Comment [PDF]

open access: yesCognitive Science, 1991
In a recent issue of Cognitive Science, * Yoav Shoham (1990) proposed a theory of causation based on a nonmonotonic logic of temporal knowledge. It is the purpose of this commentary to show that Shoham’s procedure is essentially isomorphic with a theory of causal ordering that requires no special nonmonotonic logic. Although this latter causal ordering
openaire   +1 more source

Effects of joint geometric configurations on cyclic shear behavior of intermittent joints under constant normal stiffness conditions

open access: yesDeep Underground Science and Engineering, EarlyView.
The present manuscript explored the effects of joint configurations on the cyclic shear behavior of intermittent joints for the first time. The cyclic shear response, shear strength degradation, dilation characteristics evolution, frictional property, fractal dimension, and dissipative energy were further analyzed during shear cycles, which is crucial ...
Bin Wang   +3 more
wiley   +1 more source

A Family of Defeasible Reasoning Logics and its Implementation [PDF]

open access: yes, 2000
Defeasible reasoning is a direction in nonmonotonic reasoning that is based on the use of rules that may be defeated by other rules. It is a simple, but often more efficient approach than other nonmonotonic reasoning systems. This paper presents a family
Antoniou, Grigoris   +4 more
core   +3 more sources

Proof Complexity of Propositional Default Logic [PDF]

open access: yes, 2010
Default logic is one of the most popular and successful formalisms for non-monotonic reasoning. In 2002, Bonatti and Olivetti introduced several sequent calculi for credulous and skeptical reasoning in propositional default logic.
Beyersdorff, O   +4 more
core   +3 more sources

Generalized Matsuoka–Nakai criterion considering hydrostatic pressure dependence in the brittle–ductile region

open access: yesDeep Underground Science and Engineering, EarlyView.
Three sets of strength data were selected, including hydrostatic pressure independent within the brittle region (HPI‐B), hydrostatic pressure dependent within the brittle region (HPD‐B), and hydrostatic pressure dependent within the brittle–ductile region (HPD‐BD). For HPI type, the failure envelope within the deviatoric plane remains constant.
Jiacun Liu   +3 more
wiley   +1 more source

Experimental study on burning rate and flame geometry in construction tunnel fires under high geothermal conditions

open access: yesDeep Underground Science and Engineering, EarlyView.
Abstract As tunnel construction advances in lengths and depths, the construction of tunnels in high geothermal environments has become increasingly common, raising significant fire risks. In this study, a 1:20 scale model tunnel test platform was constructed to investigate the effects of a high geothermal environment on fire behavior in tunnels during ...
Xiaoxian Fei   +6 more
wiley   +1 more source

Nonmonotonic Skeptical Consequence Relation in Constrained Default Logic

open access: yesStudia Universitatis Babes-Bolyai: Series Informatica, 2010
This paper presents a study of the nonmonotonic consequence relation which models the skeptical reasoning formalised by constrained default logic. The nonmonotonic skeptical consequence relation is defined using the sequent calculus axiomatic system.
Mihaiela Lupea
doaj  

On cascade products of answer set programs

open access: yes, 2014
Describing complex objects by elementary ones is a common strategy in mathematics and science in general. In their seminal 1965 paper, Kenneth Krohn and John Rhodes showed that every finite deterministic automaton can be represented (or "emulated") by a ...
Antić, Christian
core   +1 more source

From Empire to Aid: Analysing Persistence of Colonial Legacies in Foreign Aid to Africa

open access: yesJournal of International Development, EarlyView.
ABSTRACT For decades now, Western development agencies and donors have been castigated for their colonial biases in providing aid to Africa. It is well established that donors provide considerably more foreign aid to their former colonies relative to other countries.
Swetha Ramachandran
wiley   +1 more source

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