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ethical misconduct is not a new issue in the history of science and literature. however, ethical misconducts in science have grown considerably in the modern era which is due to emphasis on the scientific proliferation in research institutes and gauging scientists according to their publications. in the current case series, several misconducts occurring over the previous years in mashhad univer...

Increased leakage and process variations make distinction between fault-free and faulty chips by IDDQ test difficult. Earlier the concept of Current Ratios (CR) was proposed to screen defective (outlier) chips. However, it is not capable of catching certain defects. Neighboring chips on a wafer have similar fault-free parameters that are correlated through the underlying fabrication process. Ba...

This paper presents several microstrip patch antennas, for reception at X band. From passive and active single patches to active arrays, design, fabrication, integration and test are addressed.

The complexity of semiconductor manufacturing and its wealth of data provide an ideal environment for the application of data mining to discover patterns of behavior leading to knowledge. The demands are, however, such that data-mining technology needs to be extended further to achieve its full potential. Companies successful in developing and harnessing this technology will be rewarded with po...

In a competitive market, semiconductor fabricator must face an environment with multi-product types, multi-priority orders and demand changes in time. Since semiconductor fabrication has a very complicated production process, the above-stated characteristics make the production planning even more difficult. This paper applies data envelopment analysis (DEA) to find a set of product family mix t...

Semiconductor hookup construction (i.e., constructing process tool piping systems) is critical to semiconductor fabrication plant completion. During the conceptual project phase, it is difficult to conduct an accurate cost estimate due to the great amount of uncertain cost items. This study proposes a new model for estimating semiconductor hookup construction project costs. The developed model,...

In this paper, we exploit the speed of an ordinal optimization (OO)-based simulation tool designed by Hsieh et al. to investigate dynamic selection of scheduling rules for semiconductor wafer fabrication (fab). Although a scheduling rule is a combination of loading wafer release and dispatching rules, this paper specifically focuses on dispatching when significant amount of wafers-in-process (W...