The variational problem of the movement mode selection for load outreach change mechanism during a steady-state tower crane slewing was formulated and solved in paper, that ensures minimization drive motor power. We used dynamic model research work, which presented mechanical system with three degrees freedom. is nonlinear, so we modified PSO-Rot-Ring particle swarm metaheuristic method its sol...

Recently construction projects are becoming more high-rise, and for this reason, efficient operation of tower crane is very important. Therefore, we conducted a study on the development automatic arrangement algorithm crane. In study, new concept, 'lifting limit axis' concept was applied to develop (optimal arrangement) Through process, 'three-dimensional figure' created research carried out co...

I argue that James Sterba’s argument from evil involves a category mistake. He applies moral principles pertain to ethical requirements apply within creation what may be called the ethics or axiology of creating and sustaining creation. The paper includes reflection on relationship between justification redemption, justice mercy.

The quay crane scheduling problem studied in this paper is to determine a handling sequence of holds for quay cranes assigned to a container vessel considering interference between quay cranes. This paper provides a mixed integer programming model for the considered quay crane scheduling problem that is NP-complete in nature. A genetic algorithm is proposed to obtain near optimal solutions. Com...