cold roll-forming is a process in which the roll of sheet is formed by passing continuously through the set of rotary rollers without changing thickness in a cool way until it is formed to the desired profile. in this paper a parametric study on the section twist angle in roll-forming the non-symmetric channel is presented, using finite element simulation. at first finite element simulation res...

In this paper we give an improvement of the degree of the homogeneous linear recurrence with integer coefficients that exponential sums of symmetric Boolean functions satisfy. This improvement is tight. We also compute the asymptotic behavior of symmetric Boolean functions and provide a formula that allows us to determine if a symmetric boolean function is asymptotically not balanced. In partic...

This paper carries on the investigation of orthomodular lattices that are endowed with a symmetric difference. Let us call them ODLs. Note ODLs may have certain bearing “quantum logics” - close to Boolean algebras though they capture phenomenon non-compatibility. The initial question in studying state space is whether can be poor. purely combinatorial nature. In this note, we exhibit finite ODL...