Results 51 to 60 of about 167,953,432 (331)
IET Control Theory & Applications, 2021 In this paper, the state‐dependent impulsive consensus problem of nonlinear multi‐agent systems in directed topology with fully relative state constraint impulses is investigated.
Qiangqiang Zhang +3 more
doaj +1 more source
Constraint-Based Modeling: From Cognitive Theory to Computer Tutoring – and Back Again
International Journal of Artificial Intelligence in Education, 2016 The ideas behind the constraint-based modeling (CBM) approach to the design of intelligent tutoring systems (ITSs) grew out of attempts in the 1980’s to clarify how declarative and procedural knowledge interact during skill acquisition.
S. Ohlsson
semanticscholar +1 more source
Gut microbiome and aging—A dynamic interplay of microbes, metabolites, and the immune system
FEBS Letters, EarlyView.Age‐dependent shifts in microbial communities engender shifts in microbial metabolite profiles. These in turn drive shifts in barrier surface permeability of the gut and brain and induce immune activation. When paired with preexisting age‐related chronic inflammation this increases the risk of neuroinflammation and neurodegenerative diseases.
Aaron Mehl, Eran Blacher
wiley +1 more source
FEBS Letters, EarlyView.Ascidian Ciona larvae initially show strong clockwise tail twisting, which is largely corrected during development. However, a small residual twist remains. This study shows that organized helical myofibrils in tail muscles mechanically stabilize this residual asymmetry, preventing complete restoration of bilateral symmetry and revealing how embryos ...
Yuki S. Kogure +3 more
wiley +1 more source
Constraints based scheduling in the multi-project environment
Computer Assisted Methods in Engineering and Science, 2022 The paper deals with the problem of new projects acceptance into the multi project environment, where constraints are limiting the number of projects that a company is able to carry out concurrently. The objective of this paper is to answer the question:
Bożena Skołud, Aleksandra Zientek
doaj
A unified theory of structural tractability for constraint satisfaction problems
Journal of computer and system sciences (Print), 2008 In this paper we derive a generic form of structural decomposition for the constraint satisfaction problem, which we call a guarded decomposition.
David A. Cohen, P. Jeavons, M. Gyssens
semanticscholar +1 more source
Constraint Answer Set Programming without Grounding [PDF]
Theory and Practice of Logic Programming, 2018 Extending ASP with constraints (CASP) enhances its expressiveness and performance. This extension is not straightforward as the grounding phase, present in most ASP systems, removes variables and the links among them, and also causes a combinatorial ...
Joaquín Arias +4 more
semanticscholar +1 more source
From mice to humans—divergent strategies for intestinal homeostasis and regeneration
FEBS Letters, EarlyView.Recent advances such as organoid genome editing, xenotransplantation, imaging, and whole‐genome sequencing have enabled direct studies of human intestinal stem cells (ISCs). These studies reveal species‐specific features, including slower ISC proliferation, distinct injury responses, slower somatic mutation accumulation in humans, and an inverse ...
Keiko Ishikawa +2 more
wiley +1 more source
A New Multi-Resource cumulatives Constraint with Negative Heights [PDF]
, 2001 This paper presents a new cumulatives constraint which generalizes the original cumulative constraint in different ways. The two most important aspects consist in permitting multiple cumulative resources as well as negative heights for the resource ...
Nicolas Beldiceanu +4 more
core +1 more source
Modelling stem cell differentiation related processes—A practical overview for biologists
FEBS Letters, EarlyView.Stem cell differentiation is complex and difficult to control experimentally. This review introduces suitable computational modelling approaches that can support stem cell research, from mechanistic ODE and abstract models to multiscale and deep learning methods.
Ricco Zeegelaar +4 more
wiley +1 more source