Motivations to engage in retail shopping comprise both utilitarian and hedonic dimensions. Business to consumer e-commerce conducted via the mechanism of web-shopping offers an expanded opportunity for companies to create a cognitively and esthetical good shopping environment in ways not readily imitable in the no electronic shopping world. In this report the details key implementation aspects of a typical online purchasing system, hypothetically labeled SYSTEM X, and describe how it worksparticularly regarding security issues. The report concludes with recommendations for users of similar online buying systems.

This paper presents a theoretical study of various types of fiber optic sensing systems used for seismic monitoring integrating a series of fiber optic Bragg gratings (FBGs) into the sensor carrier. The interference network contains groups of interfering subnets, and each subnet contains multiple interference networks. Each interferometer in the subband is implemented with a specific pair of fiber Bragg gratings and the sensing length of the fiber is placed between each pair of fiber Bragg gratings. Each fiber Bragg grating pair has a similar characteristic wavelength modified from the characteristic wavelength of all other fiber Bragg grating pairs in the subband. The subarrays are interconnected to minimize crosstalk of common wavelengths between the sensors throughout the interferometer array. Our work is focused on investigating the selection of the best wavelength for use in the system. This study was performed using stateof-the-art simulation techniques for strain and temperature changes in FBG sensor arrays. The cumulative results obtained will help designers achieve optimized performance of similar fiber optic hydrophones in the future. The wavelength range of 1300 nm has been shown to provide the best performance for this type of fiber optic hydrophone system.