This paper presents two novel solution approaches for addressing large-scale multi-floor process plant layout problems. Based on the mixed integer linear programming (MILP) model, first approach employs a multi-directional search strategy while second improves efficiency by reducing model size through an iterative framework. Both determine spatial arrangement of equipment considering equipment-...

We present e cient parallel algorithms for solving two graph layout problems: Find a F ary Embedding on a grid and construct a rectangular dual for planar graphs. The algorithm for the rst problem takes O(logn log n) time with O(n) processors on a PRAM. The algorithm for the second problem takes O(log 2 n) time with O(n) processors.

natural frequency is one of the parameters that represent useful information about the dynamic behavior of structures. controlling this parameter can decrease the probability of damage under dynamic loading. weight optimization on layout and sizing with frequency constraints is a well known problem because of its highly non-linear behavior. improved ray optimization (iro) algorithm is utilized ...

Facility layout design is a strategic issue and has a significant and lasting impact on the efficiency of a manufacturing system. An ideal facility layout provides the optimum relationship among output, floor area and manufacturing process. Traditionally, the facility layout problem is solved using many methods like heuristics, Mathematical programming, Knowledge based approaches etc. This pape...

In manufacturing-cell-formation research, a major concern is to make groups of machines into machine cells and parts part families. Extensive work has been carried out in this area using various models techniques. Regarding these ideas, paper, experiments with varying parameters the popular metaheuristic algorithm known as genetic have bi-criteria objective function: minimization intercell move...

Using examples of implemented layout decisions, and from performance-based research on the effects that layout has on readers this paper proposes seven reasons why the layout of documents is important. These reasons range from economic to psychological. The importance of specific layout features will often differ for those generating documents from an information resource and for those seeking ...