Unit-load warehouses are used to store items—typically pallets—that can be stowed or retrieved in a single trip. In the traditional, ubiquitous design, storage racks are arranged to create parallel picking aisles, which force workers to travel rectilinear distances to picking locations. We consider the problem of arranging aisles in new ways to reduce the cost of travel within these warehouses....

The article presents a theoretical calculation of the load-bearing capacity out-of-center compressed box-section racks depending on eccentricity and amount bending in extreme fibers located middle third their length

Undesirable effects of chaos suggest the need for a comprehensive understanding nonlinear and chaotic behavior nanodevices powered by Casimir force. Here, dynamics nanoscale mechanical device composed corrugated cylinder (pinion) placed between two plates (racks) coupled via lateral force is theoretically numerically explored when both racks undergo harmonic motion. Three dimensionless paramete...

We prove that the lower bounds for Betti numbers of the rack, quandle and degeneracy cohomol-ogy given in [CJKS] are in fact equalities. We compute as well the Betti numbers of the twisted cohomology introduced in [CES]. We also give a group-theoretical interpretation of the second cohomology group for racks.

Automated Rack Supported Warehouses, consisting of huge steel buildings offering optimized storage solutions, have been facing a diffusion in the last decade, mainly due to necessity having bigger and more efficient places stock handle goods through automated systems. However, there is not specific regulatory framework for them, they are currently being designed adopt approach used traditional ...

We prove that the lower bounds for Betti numbers of the rack, quandle and degeneracy cohomol-ogy given in [CJKS] are in fact equalities. We compute as well the Betti numbers of the twisted cohomology introduced in [CES]. We also give a group-theoretical interpretation of the second cohomology group for racks.