In this paper we present a Computer Vision system for printed circuit board (PCB) automated inspection. In the last years PCB industry has been invested in manufacturing automation improvement. This is known, especially in measurement and inspection field. We can note that the tolerances on PCB assembly become more accurate. With computer hardware and cameras advances, new Computer Vision algor...

We apply formal concept analysis to the understanding, analysis, and code inspection of individual JAVA classes. A concept is a maximal set of methods and fields such that each field is used by every method and each method uses every field. A real life case study shows that the mathematical lattice of concepts is a valuable means in studying the interface of a large class, understanding and dis...

The sources of errors associated with the measurement of nuclear radiations includethe noise associated with the radiation pulse, the dead time required for the processing of the incident radiation pulse and the pileup of pulses. In analogue processing, these errors are often downplayed leading to appreciable errors in the observed results. Some digital processors have been designed and built a...

This paper presents the results of an experiment that compared error detection capability of voting, instrumentation, and Fagan inspection methods. Several experiments have measured effectiveness of various error detection methods. However, most experiments have used different programs; consequently, the results are generally incompatible and do not allow one to make objective comparison on the...

In this research, we study a single-component system that is characterized by three distinct states, cf. the Delay Time Model: normal, defective, and failed. The system is maintained by an inspection policy with fixed time intervals, and preventive system replacement after a number of inspections. The inspections are imperfect, and the probability of an inspection error changes over the system’...

This paper proposes another realistic application of the economic order quantity EOQ model. Researchers have studied EOQ models that assume the received lot contains items that are perfect and imperfect. All models in the literature assume that the received lot goes through a 100% inspection to separate acceptable items from the non-acceptable items. This paper argues that 100% inspection is no...

The finite element method plays an extremely important role in forging process design as it provides a valid means to quantify forging errors and thereby govern die shape modification to improve the dimensional accuracy of the component. However, this dependency on process simulation could raise significant problems and present a major drawback if the finite element simulation results were inac...