We have extended and improved the statistical test recently developed by Rauzy for assessing the completeness in apparent magnitude of magnitude-redshift surveys. Our improved test statistic retains the robust properties – specifically independence of the spatial distribution of galaxies within a survey – of the Tc statistic introduced in Rauzy’s seminal paper, but now accounts for the presence...

This paper considers deep visual recognition on long-tailed data. To make our method general, we tackle two applied scenarios, i.e. , classification and metric learning. Under the data distribution, most classes (i.e., tail classes) only occupy relatively few samples are prone to lack of within-class diversity. A radical solution is augment with higher this end, introduce a simple reliable name...

We have determined the composite luminosity function (LF) for galaxies in 60 clusters from the 2dF Galaxy Redshift Survey. The LF spans the range −22.5 < MbJ < −15, and is well fitted by a Schechter function with MbJ = −20.07 ± 0.07 and α = −1.28 ± 0.03 (H 0 = 100 km s−1 Mpc−1, M = 0.3, = 0.7). It differs significantly from the field LF, having a characteristic magnitude that is approximately 0...

Abstract Metal binder jetting (MBJ) is an additive manufacturing (AM) technology split into two process steps: printing and sintering. Firstly, product built up layer-by-layer by the selective deposition of a agent on powder bed. Secondly, thermal treatment (sintering) consolidates metal structure. MBJ currently becoming more attractive reason high potential scalability, cost-effective producti...