Book Reviews

Ted Goodhew, T.R.I.S.T. Advisory Teacher, Berkshire County Council, ‘New Directions in Pastoral Care’, Edited by Peter Lang & Michael Marland, 1985 Blackwell —

Professor R. F. Dearden, University of Birmingham, Profiles and Records of Achievement, Patricia Broadfoot (ed) 1986 Holt, Rinehart and Winston £6.50 paperback

Pat Salder, Education for Capability, Ed Tyrrell Burgess N. F. E. K./Nelson 1986 £10.95

John Alcock, University of Warwick, Solo Monologues for Drama,John Goodwin and Bill Taylor 1985 Edward Arnold Ltd £2.15

Caroline Lodge, White Hart Lane School, London, Sharing,Beryl Heather FPA Education Unit 1984 52pp £3.50     

“Forget birth pains,we haven't got past the conception stage yet”. A reply to Frank Coffield's ‘Britain's continuing failure to train: the birth pangs of a new policy’

This article is a response to Frank Coffield's recent reflections in this journal on the Performance and Innovation Unit's project on workforce development in Britain. It questions the extent to which the PIU's findings represent a ‘new understanding’ of the UK's skills problem and asks why academics have been so reluctant to spell out what a demand‐side strategy for tackling the problem would involve.     

Integrierte Entwicklung von Automotive-Software mit AutoFocus

Zur Beherrschung der komplexen vernetzten und verteilten Funktionen von Automotive-Software ist eine Beschreibung des zu erstellenden Systems auf verschiedenen Abstraktionsebenen und schrittweise überg?nge zwischen diesen Ebenen notwendig. Neben der Definition geeigneter Ebenen werden zur Unterstützung echtzeitkritischer Systemanteile ein einheitliches Berechnungsmodell, ebenenspezifische Beschreibungstechniken, sowie methodische Regeln für diese Abstraktionsebenen eingeführt und in den Werkzeugprototypen AutoFocus integriert.     

Dimensions of variability in embedded operating systems

Design, implementation, and re-engineering of operating systems are still an ambitious undertaking. Despite, or even because, of the long history of theory and practice in this field, adapting existing systems to environments of different conditions and requirements as originally specified or assumed, in terms of functional and/or non-functional respects, is anything but simple. Especially this is true for the embedded systems domain which, on the one hand, calls for highly specialized and application-aware system abstractions and, on the other hand, cares a great deal for easily reusable implementations of these abstractions. The latter aspect becomes more and more important as embedded systems technology is faced with an innovation cycle decreasing in length. Software for embedded systems needs to be designed for variability, and this is in particular true for the operating systems of this domain. The paper discusses dimensions of variability that need to be considered in the development of embedded operating systems and presents approaches that aid construction and maintenance of evolutionary operating systems. CR subject classification  C.3; D.2.11; D.2.13; D.4.7     

Efficient reverse k-nearest neighbor estimation

The reverse k-nearest neighbor (RkNN) problem, i.e. finding all objects in a data set the k-nearest neighbors of which include a specified query object, has received increasing attention recently. Many industrial and scientific applications call for solutions of the RkNN problem in arbitrary metric spaces where the data objects are not Euclidean and only a metric distance function is given for specifying object similarity. Usually, these applications need a solution for the generalized problem where the value of k is not known in advance and may change from query to query. In addition, many applications require a fast approximate answer of RkNN-queries. For these scenarios, it is important to generate a fast answer with high recall. In this paper, we propose the first approach for efficient approximative RkNN search in arbitrary metric spaces where the value of k is specified at query time. Our approach uses the advantages of existing metric index structures but proposes to use an approximation of the nearest-neighbor-distances in order to prune the search space. We show that our method scales significantly better than existing non-approximative approaches while producing an approximation of the true query result with a high recall.     

The Effects of User-fee Policy on Attendance Rates among Kenyan Elementary Schoolchildren

What happens when a government cannot meet its obligation to provide universal primary education and enhance the quality of education for all of its citizens? The present study examines the interactions among stakeholders in the user-fee policy in primary education in Kenya. It seeks to show how this policy has affected attendance rates and drop-out rates among elementary schoolchildren. It reveals that, in addition to limiting access and contributing to attrition, user-fees significantly contribute to absenteeism. The study also exposes the dire situation of economically vulnerable citizens who do not have the resources which they need to ensure private education for their children. It concludes that together the government and household-level economic weaknesses have made it virtually impossible to attain the goal of education for all in Kenya.