Formulating Update Messages

This paper presents a method with which we can generate update messages for use with Smalltalk's dependency mechanism. The basic idea is that any messages which cause an object to change are forwarded to the object's dependants. The method is perfectly general and future proofs objects against changes in their dependants

Is the US no longer the economy of first resort? Changing economic relationships in the Asia-Pacific region

This paper tests the hypothesis that the economic relationships between China and her major trading partners have changed over the past 20 years with the industrialisation of China, and the emergence of Japan as a source of investment and network trade in sophisticated manufactures, and the US as a source of finance and investment assets, supplier of services and an apparently inexhaustible demand for consumer and intermediate goods. Has this changed the size and direction of spillovers in the region, and has it curtailed or eliminated American economic leadership? We use time-varying spectral methods to decompose the links between the two leading Asian economies and the US. We find: (a) the links with the US have been weakening, while those based on China have strengthened; (b) that this is not new � it has been happening since the 1980s, but has now been reversed by the surge in trade; (c) that the links with the US have been rather complex, with the US able to shape the cycles elsewhere through her control of monetary conditions, but the China zone able to control the size of their cycles; (d) that Japan remains linked to (and dependent on) the US; and (e) there is no evidence that pegged exchange rates encourage convergence

De-escalation of aggressive behaviour in healthcare settings:concept analysis

BACKGROUND: De-escalation is the recommended first-line response to potential violence and aggression in healthcare settings. Related scholarly activity has increased exponentially since the 1980s, but there is scant research about its efficacy and no guidance on what constitutes the gold standard for practice.OBJECTIVES: To clarify the concept of de-escalation of violence and aggression as described within the healthcare literature.DESIGN: Concept analysis guided by Rodgers' evolutionary approach.DATA SOURCES: Multiple nursing and healthcare databases were searched using relevant terms.REVIEW METHODS: High quality and/or highly cited, or otherwise relevant published empirical or theoretical English language literature was included. Information about surrogate terms, antecedents, attributes, consequences, and the temporal, environmental, disciplinary, and theoretical contexts of use were extracted and synthesised. Information about the specific attributes of de-escalation were subject to thematic analysis. Proposed theories or models of de-escalation were assessed against quality criteria.RESULTS: N=79 studies were included. Mental health settings were the most commonly reported environment in which de-escalation occurs, and nursing the disciplinary group most commonly discussed. Five theories of de-escalation were proposed; while each was adequate in some respects, all lacked empirical support. Based on our analysis the resulting theoretical definition of de-escalation in healthcare is "a collective term for a range of interwoven staff-delivered components comprising communication, self-regulation, assessment, actions, and safety maintenance which aims to extinguish or reduce patient aggression/agitation irrespective of its cause, and improve staff-patient relationships while eliminating or minimising coercion or restriction".CONCLUSIONS: While a number of theoretical models have been proposed, the lack of advances made in developing a robust evidence-base for the efficacy of de-escalation is striking and must, at least in part, be credited to the lack of a clear conceptualisation of the term. This concept analysis provides a framework for researchers to identify the theoretical model that they purport to use, the antecedents that their de-escalation intervention is targeting, its key attributes, and the key negative and positive consequences that are to be avoided or encouraged.</p

Using \u27The Autobiography of Malcolm X\u27 to Teach Introductory Sociology

In this chapter, we make the case for using The Autobiography of Malcolm X to teach introductory sociology classes. While The Autobiography of Malcolm X is an autobiography and not a novel, we summarize the literature on using novels in sociology and compare this literature to our own experiences using autobiographies in the classroom. We then describe how autobiographies are particularly helpful for introducing students to the concept of the ‘‘sociological imagination’’ before highlighting this with an in-class exercise. Finally, we discuss student feedback and some of the drawbacks to using autobiographies and the extent to which these drawbacks can be mitigated. [excerpt

An experimental study of growth and phase change of polar stratospheric cloud particles

This report describes the progress made on understanding phase changes related to solutions which may comprise Polar Stratospheric Clouds. In particular, it is concerned with techniques for investigating specific classes of metastability and phase change which may be important not only in Polar Stratospheric Clouds but in all atmospheric aerosols in general. While the lower level atmospheric aerosol consists of mixtures of (NH4)(SO4)2, NH4HSO4, NaCl among others, there is evidence that aerosol at PSC levels is composed of acid aerosol, either injected from volcanic events (such as Pinatubo) or having diffused upward from the lower atmosphere. In particular, sulfuric acid and nitric acid are known to occur at PSC levels, and are suspected of catalyzing ozone destruction reactions by adsorption on surfaces of crystallized particles. The present study has centered on two approaches: (1) the extent of supercooling (with respect to ice) and supersaturation (with respect to hydrate) and the nature of crystal growth in acid solutions of specific molality; and (2) the nature of growth from the vapor of HNO3 - H2O crystals both on a substrate and on a pre-existing aerosol

Beyond Finger-Pointing and Test Scores

This report examines high-stakes interventions in low-performing schools in six cities in Cross City Campaign's network

Intuitive querying of e-Health data repositories

At the centre of the Clinical e-Science Framework (CLEF) project is a repository of well organised, detailed clinical histories, encoded as data that will be available for use in clinical care and in-silico medical experiments. An integral part of the CLEF workbench is a tool to allow biomedical researchers and clinicians to query – in an intuitive way – the repository of patient data. This paper describes the CLEF query editing interface, which makes use of natural language generation techniques in order to alleviate some of the problems generally faced by natural language and graphical query interfaces. The query interface also incorporates an answer renderer that dynamically generates responses in both natural language text and graphics