Metabolic studies of some sulphanilamidopyrimidines

Imperial Users onl

480Mbit/s UWB bi-directional radio over fiber CWDM PON using ultra-low cost and power VCSELs

Radio-over-fiber (RoF) schemes offer the possibility of permitting direct access to native format services for the domestic user. A low power requirement and cost effectiveness are crucial to both the service provider and the end user. Here, we present an ultra-low cost and power RoF scheme using direct modulation of commercially-available 1344 nm and 1547 nm VCSELs by band-group 1 UWB wireless signals (ECMA-368) at near broadcast power levels. As a result, greatly simplified electrical-optical-electrical conversion is accomplished. A successful demonstration over a transmission distance of 20.1 km is described using a SSMF, CWDM optical network. EVMs of better than-18.3 dB were achieved. © 2011 Optical Society of America

A narrowing of meaning:loss of narrative unity and the nature of design change

This paper seeks to explore where design might best focus its efforts with respect to contemporary concerns about sustainability, particularly in view of the magnitude and nature of change required. The discussion traces the long entrenchment, over several centuries, of assumptions, conventions and outlooks that resulted in a shift in worldview from traditional to modern/late-modern. This shift is not only associated with unprecedented environmental damage, but also with a narrower perspective, a loss of narrative unity, and a loss of meaning. The argument is made that, by focusing on rationalistic, techno-scientific solutions design restricts its contribution to a variety of incremental changes that actually support the continuance of a fundamentally unsustainable system. Instead, design can widen its purview and be a catalyst for more substantive change by restoring a more balanced approach to products and processes in context; thereby contributing to a recovery of narrative unity and meaning

Promoting Component Reuse by Separating Transmission Policy from Implementation

In this paper we present a methodology and set of tools which assist the construction of applications from components, by separating the issues of transmission policy from component definition and implementation. This promotes a greater degree of software reuse than is possible using traditional middleware environments. Whilst component technologies are usually presented as a mechanism for promoting reuse, reuse is often limited due to design choices that permeate component implementation. The programmer has no direct control over inter-address-space parameter passing semantics: it is fixed by the distributed application's structure, based on the remote accessibility of the components. Using traditional middleware tools and environments, the application designer may be forced to use an unnatural encoding of application level semantics since application parameter passing semantics are tightly coupled with the component deployment topology. This paper describes how inter-address-space parameter passing semantics may be decided independently of component implementation. Transmission policy may be dynamically defined on a per-class, per-method or per-parameter basis.Comment: Submitted to ICDCS 200

O Come all ye thinking types : the wider appeal of the cathedral carol service

Psychological type profiles of Anglican clergy and of Anglican congregations routinely direct attention to the over-representation of feeling types, and to the consequent under-representation of thinking types. The present study of 164 men and 239 women who completed the Francis Psychological Types Scales in the context of a cathedral carol service found a higher proportion of thinking types in this congregation than in the regular Sunday congregations of parish churches. The implications of these findings are discussed for the development of cathedral ministry