منابع مشابه
Directed seed dispersal by bellbirds in a tropical cloud forest.
A fundamental goal of plant population ecology is to understand the consequences for plant fitness of seed dispersal by animals. Theories of seed dispersal and tropical forest regeneration suggest that the advantages of seed dispersal for most plants are escape from seed predation near the parent tree and colonization of vacant sites, the locations of which are unpredictable in space and time. ...
متن کاملHorn Complements: Towards Horn-to-Horn Belief Revision
Horn-to-Horn belief revision asks for the revision of a Horn knowledge base such that the revised knowledge base is also Horn. Horn knowledge bases are important whenever one is concerned with efficiency—of computing inferences, of knowledge acquisition, etc. Horn-to-Horn belief revision could be of interest, in particular, as a component of any efficient system requiring large commonsense know...
متن کاملThe Horn Mu-calculus
The Horn -calculus is a logic programming language allowing arbitrary nesting of least and greatest fixed points. The Horn -programs can naturally expresses safety and liveness properties for reactive systems. We extend the setbased analysis of classical logic programs by mapping arbitrary -programs into “uniform” -programs. Our two main results are that uniform -programs express regular sets o...
متن کاملDefinability of Horn Revision from Horn Contraction
In the AGM framework [Alchourrón and Makinson, 1985], a revision function can be defined directly through constructions like systems of spheres, epistemic entrenchment, etc., or indirectly through a contraction operation via the Levi identity. A recent trend is to construct AGM style contraction and revision functions that operate under Horn logic. A direct construction of Horn revision is give...
متن کاملThe curled sebaceous horn
The mysterious sebaceous horn (devil's horn) is a historically perplexing phenomenon of unknown etiology. It classically occurs on the sun-exposed areas of the face and hands and consists of a keratin mound with a benign base in most cases and squamous cell carcinoma occurring in about 20% of patients.
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Frontiers in Ecology and the Environment
سال: 2020
ISSN: 1540-9295,1540-9309
DOI: 10.1002/fee.2240