Pipe Dreams: Tapping into the Health Information in Our Sewers.

Numerical Analysis of Sediment Transport in Sewer Pipe

The efficiency and economical performance of sewer systems is an essential issue in urban drainage. The need for sewers to carry sediment has been recognized for many years. One of the main problems in designing sewerage systems is the sediment deposition. Sedimentation in sewers occurs regularly according to the alternating natural flow. The present study investigates the hydraulic characteris...

On the Relationship between Pipe Dreams and Permutation Words

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...

Effect of Educational Intervention based on the Theory of Planned Behavior on Preventing Water Pipe Smoking in Secondary School Students

Aims: Water pipe smoking, especially among young people, has been on the rise and the increasing prevalence of tobacco use among students is worrying. The aim of this study was to investigate the effect of educational intervention based on the theory of planned behavior on preventing water pipe smoking in secondary school students. Materials & Methods: This semi-experimental study was performe...

Duality of Antidiagonals and Pipe Dreams

The cohomology ring H(F ln) of the manifold of complete flags in a complex vector space C has a basis consisting of the Schubert classes [Xw], the cohomology classes of the Schubert varieties Xw indexed by permutations w ∈ Sn. The ring H (F ln) is naturally a quotient of a polynomial ring in n variables; nonetheless, there are natural n-variate polynomials, the Schubert polynomials, representin...

Pipe Dreams: Eternal Recurrence and Simulacrum and Foucault's Ekphrasis of Magritte