J. N. Nielsen. (1877-1932)

Partisanship and Electoral Reform : Change in Congressional Cohesion , 1877 - 1932 by Rick

Explanations for the decline of partisanship in the early part of the 20th century are at odds. The received wisdom holds that a set of electoral reforms led Congressmen to break their partisan ties, engaging in more familiar modes of personalistic behavior. This view has recently been challenged noting that the bulk of the reforms passed in the Populist and Progressive periods eliminated facti...

NIELSEN NUMBERS OF n-VALUED FIBERMAPS

The Nielsen number for n-valued multimaps, defined by Schirmer, has been calculated only for the circle. A concept of n-valued fiber map on the total space of a fibration is introduced. A formula for the Nielsen numbers of n-valued fiber maps of fibrations over the circle reduces the calculation to the computation of Nielsen numbers of single-valued maps. If the fibration is orientable, the pro...

Allen (Horace N. Allen, 安連, 1858–1932)

Robin Holliday 1932–2014

Robin Holliday When the founder of a field of investigation departs from our midst, there is the palpable feeling among his or her close associates that an era has come to an end. Such is the sense that the elders of the field of genetic recombination feel with the passing of Robin Holliday, whose very name is synonymous with the process. Hediedathis homeon theoutskirtsofSydney, Australia, on t...

Op-brhe130268 1931..1932

We have known about the strong association between AS and the HLA-B*27 (B*27) gene for the past 40 years; however, the mechanism with which only some allomorphs of the HLA-B27 molecule, as well as some other HLA class I molecules, are involved in the occurrence of SpAs is still unclear [1]. In this issue of Rheumatology, Cauli et al. [2] present data that may aid our understanding of this mecha...