Kiosks in retailing: the quiet revolution

Kiosks have the potential to be a significant application of IT in retailing, information provision and service delivery. This article discusses and analyses the application of kiosks as a channel for in-store service delivery. For these kiosks a taxonomy that characterises kiosks by their function: inform, interact, transact and relate is proposed. Eight case study examples of in store kiosks are analysed in using a framework that includes environment, task, audience, and technology. Included are: kiosks used by Halifax, Daewoo, Argos, Ikea, Debenhams, GNER, Sainsbury’s. and Boots. Both the taxonomy and the framework provide a basis for further analysis of the role of kiosks in service delivery, by allowing analysis and discussion of individual kiosks to be contextualised within a wider framework. </p

Online kiosks: the alternative to mobile technologies for mobile users

Online kiosks have the potential to be a significant alternative to mobile technologies in retailing, information provision and service delivery. This article describes the development and use of different types of online kiosk in contexts where users are on the move and away from fixed technologies. A case study of a major UK airport terminal is used to illustrate different types of kiosk applications. Comparisons are made with mobile phone technologies. Online kiosks have a niche in allowing access to information, services and e-commerce technologies for all potential consumers. However, they also have a much wider role in self-managed, self-service delivery of information, services, goods and relationships to consumers on the move.</p

What is the future for undergraduate dissertations?

This article argues that the changing nature of the dissertation experience, and its associated supervision calls for more detailed attention to the development of dissertation supervisors. Dissertations have always played a major role in student learning. The following themes constitute the kernel of the article: the role of the dissertation in the student’s learning experience, managing the link between theory and practice, digitization of information resources, research methodologies and design, and finally, the implications for the role of the supervisor. It is suggested that without an awareness of the changing nature of the dissertation experience, and a more proactive approach to supervisor development, there may be serious degradation of the dissertation experience and outcomes.</p

Rock melting technology and geothermal drilling

National awareness of the potential future shortages in energy resources has heightened interest in exploration and utilization of a variety of geothermal energy (GTE) reservoirs. The status of conventional drilling of GTE wells is reviewed briefly and problem areas which lead to higher drilling costs are identified and R and D directions toward solution are suggested. In the immediate future, an expanded program of drilling in GTE formations can benefit from improvements in drilling equipment and technology normally associated with oil or gas wells. Over a longer time period, the new rock-melting drill bits being developed as a part of the Los Alamos Scientific Laboratory's Subterrene Program offer new solutions to a number of problems which frequently hamper GTE drilling, including the most basic problem - high temperature. Two of the most favorable characteristics of rock-melting penetrators are their ability to operate effectively in hot rock and produce glass linings around the hole as an integral part of the drilling process. The technical advantages to be gained by use of rock-melting penetrators are discussed in relation to the basic needs for GTE wells

Simple, reproducible methods for thermal shock testing of brittle materials

Technique requires radio frequency induction power source, induction furnace and good vacuum system to induce brittle material thermal shock testing

On self-sustained oscillations in two-dimensional compressible flow over rectangular cavities

Numerical simulations are used to investigate the resonant instabilities in two-dimensional flow past an open cavity. The compressible Navier–Stokes equations are solved directly (no turbulence model) for cavities with laminar boundary layers upstream. The computational domain is large enough to directly resolve a portion of the radiated acoustic field, which is shown to be in good visual agreement with schlieren photographs from experiments at several different Mach numbers. The results show a transition from a shear-layer mode, primarily for shorter cavities and lower Mach numbers, to a wake mode for longer cavities and higher Mach numbers. The shear-layer mode is characterized well by the acoustic feedback process described by Rossiter (1964), and disturbances in the shear layer compare well with predictions based on linear stability analysis of the Kelvin–Helmholtz mode. The wake mode is characterized instead by a large-scale vortex shedding with Strouhal number independent of Mach number. The wake mode oscillation is similar in many ways to that reported by Gharib & Roshko (1987) for incompressible flow with a laminar upstream boundary layer. Transition to wake mode occurs as the length and/or depth of the cavity becomes large compared to the upstream boundary-layer thickness, or as the Mach and/or Reynolds numbers are raised. Under these conditions, it is shown that the Kelvin–Helmholtz instability grows to sufficient strength that a strong recirculating flow is induced in the cavity. The resulting mean flow is similar to wake profiles that are absolutely unstable, and absolute instability may provide an explanation of the hydrodynamic feedback mechanism that leads to wake mode. Predictive criteria for the onset of shear-layer oscillations (from steady flow) and for the transition to wake mode are developed based on linear theory for amplification rates in the shear layer, and a simple model for the acoustic efficiency of edge scattering