Attaining high quality from manufacturing systems requires utilizing appropriate system-level quality performance modeling and analysis tools. This paper describes the application of the stochastic-flow-modeling (SFM) approach to represent the quality output behavior of a manufacturing system. To do this, a basic one-product type SFM is extended to that of a multiple-product manufacturing syste...

A neural network based vision system for micro workpieces manufacturing is developing. The system has to recognize the shapes of the micro workpieces and to give the information for correction of the workpieces manufacturing process. The system prototype was proved off-line on the task of 3 mm screw shape recognition. The shape distortions were made with the incorrect position of the cutter in ...

SMT assembly yield modeling is an important part of Design for Manufacturing (DFM) and of Design for Test (DFT) of electronic products. If the yield can be estimated accurately, the manufacturing cost, the capacity of the manufacturing line, the procurement of material, and the on–time–delivery of the product can be properly managed . On the other hand, if yield predictions are inaccurate, the ...

Based on feature modeling technology, a method of manufacturing process flow reasoning of micro device is presented to support the top-down design flow. The knowledge of micro device is hierarchically organized to construct the ontology-based knowledge database that is combined with the expert system by an interface. With the support of process databases, the manufacturing process flow is deriv...

The adoption of digital technologies in manufacturing enables intelligent dynamic control approaches, at the cost increased design complexity. In this paper, ontologies and delta-lenses are exploited to enable multi-scale models a system map different scales let data flow according level fidelity. A workflow is designed assess capability with lower details approximate behaviour original system,...

in order to present a new and high performance structure of pem fuel cell and study the influence of the flow direction and distribution on the rate of reactants diffusion, three novel models of vertical reactant flow injection into the anode and cathode reaction area field have been introduced. they consist of one inlet and two inlets and also a continuous channel. the governing equations on t...

In this paper, cellular manufacturing scheduling problems are studied. The objective is to minimize makespan (Cmax) considering part family in the manufacturing cell flow line where the setup times are sequence dependent. Minimizing Cmax will result in the increment of output rate and the speed of manufacturing systems which is the main goal of such systems. This problem is solved using Ant Col...

background: nigella sativa has been a nutritional flavoring factor and natural treatment for many ailments for so many years in medical science. earlier studies have been reported that thymoquinone (tq), an active compound of its seed, contains anticancer properties. previous studies have shown that tq induces apoptosis in breast cancer cells but it is unclear the role of p53 in the apoptotic p...

This paper describes the application of discrete event simulation to study continuous material flow. Logistics is an integrated part of most manufacturing companies. The purpose of this study is to determine the required logistics operations to allow continuous operations of a chemical manufacturing plant. The application has been used to provide critical decision support.