Results 71 to 80 of about 859,079 (303)

Epigenetic silencing of the liver‐specific lncRNA LUNAR promotes liver cancer progression via NOTCH activation

open access: yesMolecular Oncology, EarlyView.
LUNAR is a liver‐specific long noncoding RNA (lncRNA) that is highly expressed in normal liver but becomes epigenetically silenced in hepatocellular carcinoma through promoter hypermethylation. Loss of LUNAR is associated with NOTCH activation, epithelial–mesenchymal transition, and metastasis, whereas restoring LUNAR restrains metastatic progression ...
Se Ha Jang   +9 more
wiley   +1 more source

Building an AIML Chatter Bot Knowledge-Base Starting from a FAQ and a Glossary

open access: yesJe-LKS: Journal of E-Learning and Knowledge Society, 2010
Chatter bots are software programs that emulate human conversation and can show human-like conversational behavior in limited knowledge domain if properly crafted.
Giovanni De Gasperis
doaj   +1 more source

Coalgebraic Characterizations of Context-Free Languages [PDF]

open access: yesLogical Methods in Computer Science, 2013
In this article, we provide three coalgebraic characterizations of the class of context-free languages, each based on the idea of adding coalgebraic structure to an existing algebraic structure by specifying output-derivative pairs. Final coalgebra semantics then gives an interpretation function into the final coalgebra of all languages with the usual ...
Winter, J.   +2 more
openaire   +8 more sources

Parameter Estimation for Constrained Context-Free Language Models

open access: yesHuman Language Technology - The Baltic Perspectiv, 1992
A new language model incorporating both N-gram and context-free ideas is proposed. This constrained context-free model is specified by a stochastic context-free prior distribution with N-gram frequency constraints.
K. Mark   +3 more
semanticscholar   +1 more source

Spatial biology in cancer epigenetics

open access: yesMolecular Oncology, EarlyView.
Spatial epigenomics combines molecular profiling with tissue architecture to reveal how gene regulation is organized within intact tissues. In cancer, these technologies uncover the mechanisms driving tumor heterogeneity and microenvironmental interactions, opening new opportunities for biomarker discovery and precision medicine.
Eva Crespo‐García, Manel Esteller
wiley   +1 more source

Deterministic context free languages

open access: yes6th Annual Symposium on Switching Circuit Theory and Logical Design (SWCT 1965), 1965
A number of results about deterministic languages (languages accepted by pushdown automata with no choice of moves) are established. In particular,o(1)each deterministic language is unambiguous.(2)the complement of each deterministic language is a deterministic language.(3)numerous operations which preserve deterministic languages (for example ...
Seymour Ginsburg, Sheila A. Greibach
openaire   +3 more sources

ADP‐ribosylation: An emerging regulator of the epigenome

open access: yesMolecular Oncology, EarlyView.
ADP‐ribosylation has emerged as a dynamic epigenetic signaling mechanism that modifies histones and chromatin‐associated proteins. Through coordinated PARylation and MARylation, it integrates with other histone modifications to regulate chromatin structure, transcription factor activity, and gene expression, influencing genome function and disease ...
Cristel V. Camacho   +2 more
wiley   +1 more source

Using Earley Parser for Verification of Totally Ordered Hierarchical Plans

open access: yesProceedings of the International Florida Artificial Intelligence Research Society Conference
Hierarchical planning extends classical planning by capturing the hierarchical structure of tasks via decomposition of tasks to subtasks. Hierarchical plan verification is the problem of determining whether a given plan is valid according to that ...
Kristýna Pantůčková   +2 more
doaj   +1 more source

Cache efficient simple dynamic programming [PDF]

open access: yesDiscrete Mathematics & Theoretical Computer Science, 2005
New cache-oblivious and cache-aware algorithms for simple dynamic programming based on Valiant's context-free language recognition algorithm are designed, implemented, analyzed, and empirically evaluated with timing studies and cache simulations.
Cary Cherng, Richard E. Ladner
doaj   +1 more source

UiO‐66 metal–organic frameworks in biomedicine: From structural tunability to bioimaging, photodiagnostics, and photodynamic cancer therapy

open access: yesFEBS Open Bio, EarlyView.
UiO‐66(Zr) metal–organic frameworks are chemically stable, biocompatible, and highly tunable nanomaterials. Their modular structure enables controlled drug delivery, multimodal bioimaging, and light‐activated photodynamic therapy, supporting integrated diagnostic and therapeutic (theranostic) applications in cancer and biomedical research.
Veronika Huntošová   +2 more
wiley   +1 more source

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