Directed Acyclic Graph (DAG) is a popular approach to achieve scalability of blockchain networks. Due its high efficiency in data communication and great scalability, DAG has been widely adopted many applications such as Internet Things (IoT) Decentralized Finance (DeFi). DAG-based blockchain, nevertheless, faces the key challenge transaction inclusion collision due concurrency network delay. P...

Diacylglycerol (DAG) is an important lipid second messenger. DAG signalling is terminated by conversion of DAG to phosphatidic acid (PA) by diacylglycerol kinases (DGKs). The neuronal synapse is a major site of DAG production and action; however, how DGKs are targeted to subcellular sites of DAG generation is largely unknown. We report here that postsynaptic density (PSD)-95 family proteins int...

3 Yangjun Chen, Yibin Chen 4 5 6 University of Winnipeg 7 8 9 10 11 . 12 ABSTRACT 13 14 In this paper, we propose an efficient algorithm to decompose a directed acyclic graph G into a minimized set of node-disjoint chains, which cover all the nodes of G. For any two nodes u and v on a chain, if u is above v then there is a path from u to v in G. The best algorithm for this problem up to now nee...

It is shown that for a given ordered node-labelled tree of size $n$ and with $s$ many different node labels, one can construct in linear time a top dag of height $O(\log n)$ and size $O(n / \log_\sigma n) \cap O(d \cdot \log n)$, where $\sigma = \max\{ 2, s\}$ and $d$ is the size of the minimal dag. The size bound $O(n / \log_\sigma n)$ is optimal and improves on previous bounds.

Inthispaper,ahierarchicalensembleclassificationapproachthatutilizesaDirectedAcyclicGraph (DAG)structureisproposedasasolutiontothemulti-classclassificationproblem.TwomainDAG structuresareconsidered:(i)rootedDAG,and(ii)non-rootedDAG.Themainchallengesthatare consideredinthispaperare:(i)thesuccessivemisclassificationissueassociatedwithhierarch...

Four covariate selection approaches were compared: a directed acyclic graph (DAG) full model and 3 DAG and change-in-estimate combined procedures. Twenty-five scenarios with case-control samples were generated from 10 simulated populations in order to address the performance of these covariate selection procedures in the presence of confounders of various strengths and under DAG misspecificatio...

Type I NKT cells, or invariant NKT (iNKT) cells, express a semi-invariant TCR characterized by its unique Vα14-Jα18 usage (iVα14TCR). Upon interaction with glycolipid/CD1d complexes, the iVα14TCRs transduce signals that are essential for iNKT selection and maturation. However, it remains unclear how these signals are regulated and how important such regulations are during iNKT development. Diac...