When an over-the-cell routing layer is available for standard cell layout, efficient utilization of that routing space over the cells can significantly reduce layout area. In this paper, we present three physical models to utilize the area over the cells for routing in standard cell designs. We also present efficient algorithms to choose and to route a planar subset of nets over the cells so th...

In this paper, a mixed-integer linearized programming (MINLP) model is presented to design a group layout (GL) of a cellular manufacturing system (CMS) in a dynamic environment with considering production planning (PP) decisions. This model incorporates with an extensive coverage of important manufacturing features used in the design of CMSs. There are also some features that make the presented...

This mathematical model forms machine cells, optimises the costs of unassigned machines and components, designs shop floor cell layout to have minimal movement materials. The complete similarity measure algorithm cells part families in a refined form. Later, exceptional elements are eliminated optimisation by using duplication sub-contracting parts. Then is designed optimised material movements...

The inter-cell layout problem is discussed and a mathematical formulation for material flow between the cells is presented. The problem is modeled as a quadratic assignment problem (QAP). An ant algorithm is developed to solve the formulated problem. The performance of the proposed ant algorithm is compared to the facility layout algorithms such as H63, HC63-66, CRAFT and Bubble Search as well ...

Executive Summary Field-Programmable Gate Arrays (FPGAs) are becoming more prevalent in digital systems and are used to implement a wide range of applications – from telecommunications switching systems to wireless interfaces. This project investigates the feasibility of a tool to automate the process of producing the transistor-level layout of an FPGA. This will reduce the design cycle time wh...

In this paper, we describe a comprehensive layout methodology for bonded three-dimensional integrated circuits (3D ICs). In bonded 3D integration technology, parts of a circuit are fabricated on different wafers, and then, the wafers are bonded with a glue layer of Cu or polymer based adhesive. Using our layout methodology, designers can layout such 3D circuits with necessary information on int...

We present a method to visualize large clustered graphs (>10,000 nodes). We first generate a 2D layout with regard to the existing cluster hierarchy and then visualize the layout in 3D with a landscape metaphor. For the 2D layout, we use a force directed approach based on a modified Fruchterman-Reingold algorithm. Our goal is to represent single nodes and edges, as well as the overall structure...

In this paper, we describe a comprehensive layout methodology for bonded three-dimensional integrated circuits (3D ICs). In bonded 3D integration technology, parts of a circuit are fabricated on different wafers, and then, the wafers are bonded with a glue layer of Cu or polymer based adhesive. Using our layout methodology, designers can layout such 3D circuits with necessary information on int...

This study examined the aerodynamic power output change of wind turbines with inter-turbine spacing variation for a 6 MW wind farm composed of three sets of 2 MW wind turbines using computational fluid dynamics (CFD). The wind farm layout design is becoming increasingly important as the use of wind energy is steadily increasing. Among the many wind farm layout design parameters, the inter-turbi...

A fuzzy linear programming approach is taken to solve an extended mathematical linear programming model to handle two important problems in cellular manufacturing systems simultaneously: Cell formation and layout design. We seek to minimize the total cost of inter-cell and intra-cell (forward and backward) movements and the cost of machines. The fuzzy demand and fuzzy machine capacity are also ...