Results 91 to 100 of about 3,999,163 (365)
Fast approximation of search trees on trees with centroid trees
, 2022 Search trees on trees (STTs) generalize the fundamental binary search tree (BST) data structure: in STTs the underlying search space is an arbitrary tree, whereas in BSTs it is a path. An optimal BST of size $n$ can be computed for a given distribution of queries in $O(n^2)$ time [Knuth 1971] and centroid BSTs provide a nearly-optimal alternative ...
Berendsohn, Benjamin Aram +3 more
openaire +4 more sources
Game Tree Algorithms and Solution Trees [PDF]
Theoretical Computer Science, 1999 AbstractIn this paper a theory of game tree algorithms is presented, entirely based upon the concept of a solution tree. Two types of solution trees are distinguished: max and min trees. Every game tree algorithm tries to prune as many nodes as possible from the game tree.
Arie de Bruin, Wim Pijls
openaire +5 more sources
Protein O‐glycosylation in the Bacteroidota phylum
FEBS Open Bio, EarlyView.Species of the Bacteroidota phylum exhibit a unique O‐glycosylation system. It modifies noncytoplasmic proteins on a specific amino acid motif with a shared glycan core but a species‐specific outer glycan. A locus of multiple glycosyltransferases responsible for the synthesis of the outer glycan has been identified.
Lonneke Hoffmanns +2 more
wiley +1 more source
BMC Plant BiologyBackground Somatic embryogenesis (SE) is recognized as a promising technology for plant vegetative propagation. Although previous studies have identified some key regulators involved in the SE process in plant, our knowledge about the molecular changes ...
Shengkan Chen +7 more
doaj +1 more source
Managing visitors’ dining and retail experiences in South African national parks
South African Journal of Business Management, 2015 In the light of the issue of declining government funding of South African National Parks (SANParks), as well as the negative influence of the poor service levels in shops, restaurants and eating facilities in these parks on visitor spending, SANParks ...
M. Kruger, M. Saayman, E. Slabbert
doaj +1 more source
Approximating discrete probability distributions with dependence trees
IEEE Transactions on Information Theory, 1968 A method is presented to approximate optimally an n -dimensional discrete probability distribution by a product of second-order distributions, or the distribution of the first-order tree dependence.
C. Chow, Chao-Ming Liu
semanticscholar +1 more source
Width and mode of the profile for some random trees of logarithmic height
, 2006 We propose a new, direct, correlation-free approach based on central moments of profiles to the asymptotics of width (size of the most abundant level) in some random trees of logarithmic height.
Devroye, Luc, Hwang, Hsien-Kuei
core +1 more source
AAPM medical physics practice guideline 13.a: HDR brachytherapy, part B
Journal of Applied Clinical Medical Physics, EarlyView.Abstract The goal of this report is to assist the clinical medical physicist in assuring that key quality standards and practice considerations are met to ensure safe, reliable, and reproducible high dose rate (HDR) brachytherapy (BT) treatment. This guideline has been developed to provide appropriate minimum standards for such services.
Susan L. Richardson +8 more
wiley +1 more source
Evolview v3: a webserver for visualization, annotation, and management of phylogenetic trees
Nucleic Acids Res., 2019 Evolview is an interactive tree visualization tool designed to help researchers in visualizing phylogenetic trees and in annotating these with additional information. It offers the user with a platform to upload trees in most common tree formats, such as
Balakrishnan Subramanian +4 more
semanticscholar +1 more source
Zootaxa, 2014 Are birds dinosaurs? Answers to this question yield various responses, depending on a particular viewpoint. From the perspective of a common understanding of recent theories of the origin of birds and their potential precursor (ancestral) animals, then, yes, birds are a kind of dinosaur, having evolved from one or another non-avian dinosaur (Bostwick ...
Ebach, Malte C., Williams, DM
openaire +3 more sources