This outcome suggests that there could be a clear distinction concerning the quality of jobs, with good skill match and proper career development opportunities opposed to low quality positions with poor match and career opportunities.
Of these, 6236435 and 5491692 reads contained one or more low quality positions in the left and right end reads (defined as having the lowest base quality scores).
The lower market, on the other hand, is difficult to fill due to local negative attitude toward low-quality positions.
Low-quality positions were trimmed using fastx (http://hannonlab.cshl.edu/fastx_toolkit/, last accessed April 3, 2013) with a threshold of 0.3.
This could include removing sequences with a low average quality, removing sequences with too many low-quality individual bases, or masking low-quality positions with Ns.
The low-quality positions always induce a match (acting as wildcards); mismatches are only counted at high-quality positions (and reads are prescreened to ensure that they have some reasonable number of high-quality positions).
Reads with no restriction sites or containing ambiguous base calls (N), long homopolymer regions (>10 bp), excessive numbers of low-quality positions (>5 positions with quality of <10) or mitochondrial origins were removed.
Because the consensus may include incorrect base calls due to sequencing errors in low-coverage regions, such islands may be a 'pseudoconsensus': for any low-coverage or low-quality positions, TopHat uses the reference genome to call the base.
Twenty-eight phage genomes were selected for complete genome sequencing by pyrosequencing (Roche Genome Sequencer FLX by Department of Primary Industry, Victoria) supplemented, on an as needed basis, by Sanger sequencing in selected regions to resolve ambiguities and low-quality positions.
Reads were trimmed for low-quality positions and then aligned to respective genome assemblies using STAR v2.4.0 (Dobin et al. 2013) with gene annotations as guidance (supplementary table S9, Supplementary Material online).
