Pipe dreams represent permutations pictorially as a series of crossing pipes. Recent applications of pipe dreams include the calculation of Schubert polynomials, fillings of moon polyominoes, and in the combinatorics of antidiagonal simplicial complexes. These applications associate pipe dreams to words of elementary symmetric transpositions via a canonical mapping. However, this canonical mapp...

Context. Magnetic fields are proposed to play an important role in the formation and support of self-gravitating clouds and the formation and evolution of protostars in such clouds. Aims. We attempt to understand more precisely how the Pipe nebula is affected by the magnetic field. Methods. We use R-band linear polarimetry collected for about 12 000 stars in 46 fields with lines of sight toward...

I consider a class of Grand Unified models, in which E8 is broken to SU(3)× SU(2)× SU(2)× SU(2)×U(1)Y , then to SU(3)× SU(2)diag ×U(1)Y . The breaking of (SU(2)) to SU(2)diag reduces the SU(2) coupling constant, at unification, by a factor of 1/ √ 3, so that the ratio of the SU(3) and SU(2)diag coupling constants, at unification, is equal to the ratio observed at about 1 TeV. By choosing a suit...

An extensive product range is mandatory to be a key player in the pipe insulation market. The polyurethane preinsulated pipe producers are responding to global opportunities by diversifying their activities into industrial, marine, oil and gas applications. Moreover, the requirements for traditional district heating preinsulated pipes including initial thermal conductivity and its ageing perfor...

The adoption of Health IT has been argued to bring about improvements in adopting hospitals. However, examining a panel of hospitals for the adoption of IT, we find that close to 50% of hospitals that adopt a health IT system go on to stop using it during the duration of our panel.1 We find that smaller hospitals and hospitals that are located in areas that have low IT-Intensity are more likely...

The enormity of the problem of deteriorating pipeline infrastructure is widely apparent. Since a complete rebuilding of the piping system is not financially realistic, municipal and utility operators require the ability to monitor the condition of buried pipes. Thus, reliable pipeline assessment and management tools are necessary to develop long term cost effective maintenance, repair, and reha...

Proton exchange membrane fuel cell (PEMFC) has the advantages of high energy efficiency, clean, pollution-free, fast start-up and noise-free, but its thermal management problems still restrict development practical application PEMFC. This paper analyzes important influence heat on working performance proton cell, summarizes structure principle effect evaluation system using pipe under premise s...

Marine flexible pipe/cables, such as umbilicals, pipes and cryogenic hoses, are widely adopted in ocean engineering. The reinforcing armor layer these pipe/cables is the main component for bearing loads, which a typical multi-layer helically wound slender structure with different winding angles devices. There has been no general theoretical methodology to describe tensile performance of pipe/ca...