Recently, Sloane suggested the following problem: We are given n boxes, labeled 1, 2, . . . , n. For i = 1, . . . , n, box i weighs (m − 1)i grams (where m ≥ 2 is a fixed integer) and box i can support a total weight of i grams. What is the number of different ways to build a single stack of boxes in which no box will be squashed by the weight of the boxes above it? Prior to this generalized pr...

Graphene can be turned into a semimetal with broken time-reversal symmetry by adding valley-dependent pseudo-scalar potential that shifts the Dirac point energies in opposite directions, as modified Haldane model. We consider bilayer obtained stacking two time-reversed copies of model, where conduction and valence bands cross to give rise nodal line each valleys. In AB stacking, interlayer hopp...

In this paper, a combination method has been developed by coupling Multi-Objective Genetic Algorithms (MOGA) and Finite Element Method (FEM). This method has been applied for determination of the optimal stacking sequence of laminated composite plate against buckling. The most important parameters in optimization of a laminated composite plate such as, angle, thickness, number, and material of ...

Stability of the π-π stacking interactions in the Ben||substituted-coronene and HFBen||substituted-coronene complexes was studied using the computational quantum chemistry methods (where Ben and HFBen are benzene and hexaflourobenzene, || denotes π-π stacking interaction, substituted-coronene is coronene molecule which substituted with four X groups, and X= NH2, CH3, OH, H, F, CF3, CN and NO). ...

There have been several reproductive technologies developed over the past several years. Although these technologies have great potential to improve productivity of beef and dairy operations, they have only been minimally used. The reproductive technologies that may offer great value include estrus synchronization, embryo transfer, in vitro fertilization (IVF), sex-sorted semen, and embryo spli...