A case study of MMO2's Madic: A framework for creating mobile internet systems

Mobile Internet applications on ubiquitous mobile networks allows real-time, anywhere, anytime connectivity to services. Due to its scalability and potential cost savings, mobile communication is being increasingly applied in the business and consumer communities to create innovative data and voice application, which run over the Internet infrastructure. This paper reports on a case study at an organisation that created an innovative approach to developing mobile applications developed by third party independent developers. A conceptual wireless reference model is presented that was used to define the various system components required to create effective mobile applications

Significance of foundation-soil separation in dynamic soil-structure interaction

THe dynamic response of flexible surface strip-foundations allowed to uplift is numerically obtained for externally applied forces of a transient time variation. The soil medium is represented by an isotropic, homogeneous and linear half-space. The soil is treated by a time domain boundary element method, while the flexible foundation is treated by the finite element method. It was concluded that intermediate relative stiffness leads to moderate deformations when uplift is permitted. Very flexible footings produce higher deformations in unilateral contact compared to bilateral contact, and thus should be considered in their design. Unilateral contact does not significantly increase deformations for stiff footings subjected to concentrated central loading. However, relatively large deformation differences occur when the loading is eccentric, necessitating consideration of uplift in their design

Fault Testing for Reversible Circuits

Applications of reversible circuits can be found in the fields of low-power computation, cryptography, communications, digital signal processing, and the emerging field of quantum computation. Furthermore, prototype circuits for low-power applications are already being fabricated in CMOS. Regardless of the eventual technology adopted, testing is sure to be an important component in any robust implementation. We consider the test set generation problem. Reversibility affects the testing problem in fundamental ways, making it significantly simpler than for the irreversible case. For example, we show that any test set that detects all single stuck-at faults in a reversible circuit also detects all multiple stuck-at faults. We present efficient test set constructions for the standard stuck-at fault model as well as the usually intractable cell-fault model. We also give a practical test set generation algorithm, based on an integer linear programming formulation, that yields test sets approximately half the size of those produced by conventional ATPG.Comment: 30 pages, 8 figures. to appear in IEEE Trans. on CA

Spectrophotometric Studies on Fe(III) Complexes

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Deferred Action: Information seeking in the National electronic Library of Infection (DA-NeLI)

Recently, we have witnessed an overwhelming amount of information to be available in digital libraries and, in particular, on the Internet, however, the design of search engines and sitespecific navigation interfaces lacks the human knowledge searching perspective. Typically, the technical design does not pay attention to human search strategies. Without better understanding and evaluating how humans search for knowledge, most electronic information on Internet is never retrieved, or is retrieved in a misunderstanding or misinterpreting way. This is of particular concern in the development of live critical applications, such as medical digital libraries. Understanding how healthcare professionals search for knowledge in the National electronic Library of Infection (NeLI) www.neli.org.uk and improving the search and navigation design of this national project applying deferred system design principles is the main aim of this research project

Design research: The deferred actions of the design of the National electronic Library of Infection (NeLI)

Design research is concerned with developing knowledge of the design process. However, do theoretical system design theories meet the needs of system development in the real world setting? Are technical decisions made and justified on according to system theories or do social, political and financial factors prevail? We investigated the evolution of technical design, specification and development milestones of the National electronic Library of Infection (NeLI) in the UK, one of the major government initiatives in the area of infectious diseases. By investigating project documentation, internal and formal specifications, informal email discussions where key technical decisions we made, we found out that the digital library design was rather unsystematic. We applied Purao’s standard descriptive model of design to understand the design of NeLI and compare the design process with the Theory of Deferred Action, which argues that rather than design being systematic it is subject to deferred action. In this paper, we will discuss the preliminary findings of this a work-in-progress project