Introduction. This study explores blind users' unique help­seeking situations in interacting with digital libraries. In particular, help­seeking situations were investigated at both the physical and cognitive levels. Method. Fifteen blind participants performed three search tasks, including known­ item search, specific information search, and exploratory search, using the selected digital libra...

In this paper, we consider design aspects of adaptive trellisbased blind sequence estimators, which are derived from the joint ML data/channel estimation problem. The number of states in the trellis is considered as a design parameter, which provides a trade-off between the performance and complexity. It is shown that for uncoded data the data sequence can only be determined up to an unknown sh...

While architecture is experienced with all senses, the visual tends to receive most attention from designers. This paper focuses on the role of haptics, i.e. the sense of touch, in the built environment and reports on the development of haptic design parameters to support architects in paying more attention to the haptic implications of their design decisions. Haptic qualities and constraints i...

In the development of equalization algorithms for unknown channels, the effects of the sampling rate and the analog receive prefilter prior to discretization of the received signal are often overlooked. In this paper, these effects are investigated. The relationship between the fractionally spaced output samples of a noise-limiting prefilter and the symbol spaced output samples of a matched fil...

In its constructive and speculative nature, design has the critical potential to reshape prevalent socio-material realities. At same time, is inevitably normative, if not often violent, as it stabilises past, normalises present, precludes just sustainable futures. The contributions rethink concepts of critique that influence field design, question inherent blind spots discipline, expand underst...

Attributes of real-time intelligence in flexible radios are partially investigated in this article. Two design aspects of flexible transceivers are presented: the first explores concepts related to Dynamic Signal Design in an OFDMbased radio transceiver, and the second concerns blind recognition of different types of analog modulation waveforms.

Various aspects of trial design and planning for clinical testing of antiemetic therapies administered to cancer patients are considered. It is generally felt that a randomized double-blind parallel-arm design is the best. Ways of achieving adequate power of such studies are discussed briefly, as is the need for previous identification of primary and secondary end-points. Finally, summary recom...