Results 61 to 70 of about 34,455 (233)

Distributed SE(d)$$ \mathrm{SE}(d) $$ Formation Control of Multi‐Agent Systems Using Relative Measurements

open access: yesInternational Journal of Robust and Nonlinear Control, EarlyView.
ABSTRACT This study develops a solution to the distributed SE(d)$$ \mathrm{SE}(d) $$ formation control problem of multi‐agent systems using only relative measurements between agents. In this problem, poses, that is, orientations and positions, of the agents are expected to achieve desired ones.
Chunlai Peng   +4 more
wiley   +1 more source

Countable connected-homogeneous digraphs [PDF]

open access: yes, 2013
A digraph is connected-homogeneous if every isomorphism between two finite connected induced subdigraphs extends to an automorphism of the whole digraph.
Hamann, Matthias
core  

Optimal segmentation of directed graph and the minimum number of feedback arcs

open access: yes, 2017
The minimum feedback arc set problem asks to delete a minimum number of arcs (directed edges) from a digraph (directed graph) to make it free of any directed cycles.
Xu, Yi-Zhi, Zhou, Hai-Jun
core   +1 more source

Developing a Sustainability Index for Implementing Big Data Analytics in the Logistics Sector

open access: yesSustainable Development, EarlyView.
ABSTRACT This study identifies Critical Success Factors (CSFs) for implementing Big Data Analytics (BDA) for sustainable logistics practices in the context of an emerging economy. Through a combination of literature review and experts' opinions, the study identifies 18 CSFs essential for the effective application of BDA in the logistics sector.
Anchal Gupta   +2 more
wiley   +1 more source

Some Remarks On The Structure Of Strong K-Transitive Digraphs

open access: yesDiscussiones Mathematicae Graph Theory, 2014
A digraph D is k-transitive if the existence of a directed path (v0, v1, . . . , vk), of length k implies that (v0, vk) ∈ A(D). Clearly, a 2-transitive digraph is a transitive digraph in the usual sense.
Hernández-Cruz César   +1 more
doaj   +1 more source

Girth in digraphs [PDF]

open access: yesJournal of Graph Theory, 1980
AbstractFor an integer k > 2, the best function m(n, k) is determined such that every strong digraph of order n with at least m(n, k) arcs contains a circuit of length k or less.
Jean-Claude Bermond   +3 more
openaire   +3 more sources

Unpacking Entrepreneurial Ecosystem Elements: Insights Into Drivers of Entrepreneurial Activity

open access: yesThunderbird International Business Review, EarlyView.
ABSTRACT Thriving entrepreneurial ecosystems (EEs) are instrumental in new enterprise creation and growth, as they provide vital support for entrepreneurial activity. However, as this support may be context‐specific, the existing literature has yet to capture the contextual factors that shape the contributions of EEs.
Mohamed Yacine Haddoud   +4 more
wiley   +1 more source

On the causal interpretation of acyclic mixed graphs under multivariate normality [PDF]

open access: yes, 2013
In multivariate statistics, acyclic mixed graphs with directed and bidirected edges are widely used for compact representation of dependence structures that can arise in the presence of hidden (i.e., latent or unobserved) variables.
Drton, Mathias   +2 more
core  

Every countable model of set theory embeds into its own constructible universe

open access: yes, 2014
The main theorem of this article is that every countable model of set theory M, including every well-founded model, is isomorphic to a submodel of its own constructible universe.
Aczel P.   +3 more
core   +2 more sources

Foundational Reading Knowledge of Teachers of Students With IDD: Examining Experience, Degree and Time Use

open access: yesJournal of Intellectual Disability Research, EarlyView.
ABSTRACT Background Special education teachers require foundational reading content knowledge (e.g., phonemic awareness, phonics) to teach early reading skills. Though many measures have been developed to measure such knowledge, none have examined item‐level differences related to teacher characteristics (i.e., experience, degree and instructional time
Esther R. Lindström   +3 more
wiley   +1 more source

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