We prove Andrews-Beck type congruences for overpartitions concerning the $D$-rank and $M_2$-rank. To congruences, we establish generating function weighted (respectively, $M_2$-rank) moment of find a connection with second overpartitions.

We prove three variations of recent results due to Andrews on congruences for $NT(m,k,n)$, the total number parts in partitions $n$ with rank congruent $m$ modulo $k$. also conjecture new and relations $NT(m,k,n)$ a related crank-type function.

Joining the debate on the structure of depression, S. R. H. Bearh and N. Amir (2003) analyzed college students' responses to 6 Beck Depression Inventory (BDI) items with predominantly somatic content and concluded that they identified a small latent taxon corresponding to involuntary defeat syndrome. An exact replication of these analyses yielded virtually identical taxometric results, but para...

This paper builds upon the work of Kent Beck on Extreme Programming. Here we advance some ideas on how requirements engineering research can improve Extreme Programming and how the managerial common sense exposed by Beck can improve requirements management. The ideas expressed in the paper are anchored on Beck ́s book and on our long experience in Software Engineering. Our main argument is that ...