This graph may contain directed cycles, and finding an exact topological ordering of its vertices with the minimal set of violating edges is a known NP-hard problem (Charbit et al., 2007; Eades et al., 1993).
Emails may also contain direct links to websites that are infected with malware.
The findings contain direct quotes from participants.
Secondly, all possible pairs of miRNA-mRNA with an anti-correlationship were identified by Pearson's correlation analysis, implying that these pairs of miRNA-mRNA may contain both the direct target-relationship and indirect anti-correlationship pairs.
Because of the fact that, life logging applications produce log entries, which belong to every awake hour of the individual's daily life, they may contain private visual information, so direct observation of the application by the others may cause ethical problems.
Because these represent a time series experiment, the data may contain genes that are under direct or indirect NF-κB control.
These features are non-specific, and cystic or necrotic tumors (glioblastomas and solitary metastases) may contain pus, thus complicating their direct differentiation from cerebral abscesses [ 67, 101, 115].
In practice, a given weakly connected subset of Twitter users may contain groups of nodes that form directed cycles as well as nodes that do not belong in any directed cycle.
These poles may be encircled by field coils carrying direct current, or they may contain permanent magnets.
One explanation is that islets may contain passenger leukocytes that could activate the direct pathway of allorecognition [25], [26], [27].
