Abstract We established and simulated finite element solidification models of ingots with 180, 380, 800, 1,300, 1,880 mm diameters, the process temperature distributions for five ingot sizes were assessed by Fluent. On this basis, we a mathematical model interfacial heat transfer coefficient between mold, as well diameter time, using regression analysis method. The results showed that change la...

Let Nn denote the quotient poset of the Boolean lattice, Bn, under the relation equivalence under rotation. Griggs, Killian, and Savage proved that Np is a symmetric chain order for prime p. In this paper, we settle the question of whether this poset is a symmetric chain order for all n by providing an algorithm that produces a symmetric chain decompostion (or SCD). We accomplish this by modify...

UIs as a long-term solution for non-visual access to GUIs Kris Van Hees, Jan Engelen Katholieke Universiteit Leuven Department of Electrical Engineering – ESAT – SCD – DocArch Kasteelpark Arenberg 10 B-3001 Heverlee-Leuven Belgium [email protected], [email protected]

Aiming at solving the problems of huge cost, long cycle and high risky during manual cutter changing process for shield machine, a robot was designed to adapt its narrow complex space, workspace motion path arm were studied. Firstly, by analyzing internal space layout characteristic, configuration proposed, dimension each rod using multi-objective optimization method. The kinematic model establ...

Differential 2.2μm (K-band) luminosity functions are presented for a complete sample of 1570 nearby (Vgsr ≤ 3000 km/s, where Vgsr is the velocity measured with respect to the Galactic standard of rest), bright (K ≤ 10 mag), galaxies segregated by visible morphology. The K-band luminosity function for late-type spirals follows a power law that rises towards low luminosities whereas the K-band lu...