A Concurrent Language with a Uniform Treatment of Regions and Locks

A challenge for programming language research is to design and implement multi-threaded low-level languages providing static guarantees for memory safety and freedom from data races. Towards this goal, we present a concurrent language employing safe region-based memory management and hierarchical locking of regions. Both regions and locks are treated uniformly, and the language supports ownership transfer, early deallocation of regions and early release of locks in a safe manner

The Noetic Prism

Definitions of ‘knowledge’ and its relationships with ‘data’ and ‘information’ are varied, inconsistent and often contradictory. In particular the traditional hierarchy of data-information-knowledge and its various revisions do not stand up to close scrutiny. We suggest that the problem lies in a flawed analysis that sees data, information and knowledge as separable concepts that are transformed into one another through processing. We propose instead that we can describe collectively all of the materials of computation as ‘noetica’, and that the terms data, information and knowledge can be reconceptualised as late-binding, purpose-determined aspects of the same body of material. Changes in complexity of noetica occur due to value-adding through the imposition of three different principles: increase in aggregation (granularity), increase in set relatedness (shape), and increase in contextualisation through the formation of networks (scope). We present a new model in which granularity, shape and scope are seen as the three vertices of a triangular prism, and show that all value-adding through computation can be seen as movement within the prism space. We show how the conceptual framework of the noetic prism provides a new and comprehensive analysis of the foundations of computing and information systems, and how it can provide a fresh analysis of many of the common problems in the management of intellectual resources

Stafford Beer in memoriam – ‘an argument of change’ three decades on.

Purpose This paper is written in memory of the late Stafford Beer. The paper engages with only one dimension of the whole man: Stafford Beer as the diagnostician and prognostician of the social conditions that he so keenly observed. Design/methodology/approach The paper revisits a talk that Stafford Beer gave, over three decades ago, to administrators of the UK National Health Service (NHS). It uses the content of the talk, entitled “Health and Quiet Breathing”, to diagnose the problems that have been encountered in the development of NHS information management strategies. The paper concludes with some brief personal recollections of Stafford Beer as a friend and as a teacher. Findings The paper finds Stafford Beer’s managerial cybernetics to be a useful tool in understanding many of the problems that have beset NHS information management strategies: lack of operational research, problems in the commodification of information, financial scandal, and bureaucracy. In its examination of these issues, the paper recognises Stafford Beer’s status as a legatee of not only Norbert Wiener, but also of the great philosophers. Value The paper demonstrates how the problem-orientation of Stafford Beer’s managerial cybernetics continues to be fresh and relevant to today’s society and provides a brief portrait of him both as a friend and as a teacher

Design of a 1-chip IBM-3270 protocol handler

The single-chip design of a 20MHz IBM-3270 coax protocol handler in a conventional 3 μ CMOS process-technology is discussed. The harmonious combination of CMOS circuit tricks and high-level design disciplines allows the 50k transistor design to be compiled and optimized into a 35 mm**2 chip in 4 manweeks. The design methodology stresses the application of high-level silicon constructs and built-in testability

Making Adaptive Resilience Real

This publication focuses on developing understanding and debate about adaptive resilience, and increasing sectoral understanding of its importance through experimentation and sharing of best practice

Anatomy of a Native XML Base Management System

Several alternatives to manage large XML document collections exist, ranging from file systems over relational or other database systems to specifically tailored XML repositories. In this paper we give a tour of Natix, a database management system designed from scratch for storing and processing XML data. Contrary to the common belief that management of XML data is just another application for traditional databases like relational systems, we illustrate how almost every component in a database system is affected in terms of adequacy and performance. We show how to design and optimize areas such as storage, transaction management comprising recovery and multi-user synchronisation as well as query processing for XML

NP2020: Issues and Answers from the Next Generation

A report of a three-day conference on nonprofit leadership, held in Grand Rapids, MI in July 2007, identified that there is a leadership deficit, mentoring is needed for emerging leaders, structural challenges create barriers to nonprofit careers, and Generation X and Y believe the nonprofit sector needs more diversity. Funder support for infrastructure and operating costs, and communication to facilitate the generational leadership transition were identified as key to mitigating the leadership deficit