the frequency response analysis (fra) test has been recognized as one of the sensitive tools available for detecting electrical and mechanical faults inside power transformers. however, there is still no universally systematic interpretation technique for these tests. many research efforts have employed different statistical criteria in order to aid the interpretative capability of the fra, but...

frequency response analysis (fra) is popular technique which has been used since the last decade as a diagnostic method for transformers. however, accurate interpretation of fra measurements is still challenging. recent studies reveal that apart from winding deformation, fra data can also be influenced by moisture variation in transformer paper insulation. hence, a specific transformer’s model ...

We study consumer search behavior in a brick-and-mortar store environment, using a unique data set obtained from radio frequency identification tags, which are attached to supermarket shopping carts. This technology allows us to record consumers’ purchases as well as the time they spent in front of the shelf when contemplating which product to buy, giving us a direct measure of search effort. W...

RFID (Radio Frequency Identification) recently has gained enormous attention in various industry sectors, the media, and in academic research. This paper focuses in early RFID applications in the retail supply chain. It takes a quick look at the available literature and then explains the technological issues including the need for standardization and the challenges on the data, network, and app...

Loss functions play a fundamental role in every quality engineering method. A new set of loss functions is proposed based on Taguchi’s societal loss concept. Its applications to robust parameter design are discussed in detail. The loss functions are shown to posses some interesting properties and lead to theoretical results that cannot be handled with other loss functions.

This case study covers the Metro Group's Future Store, an example of emerging information systems applications in brick-and-mortar supermarkets and the retailing supply chain. We illustrate the main functionalities of various content provision devices fed from structured and unstructured data sources as they provide content to the shoppers at their convenience. Further, we outline the two relev...

Numerical techniques to enhance the computational efficiency of envelope methods for determining steady state and transient response in radio-frequency circuits are discussed. A way computing spectral components output signal after completion analysis using Fourier method is suggested. The adaptive algorithm following presented which exploits high order one step integrating circuit differential...

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