89 research outputs found

    “Alongside the Best”?

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    At the beginning of the twenty-first century, the Canadian Forces face a range of challenges. Reduced defense spending, uncertainty regarding missions and tasks, and the lingering effects of recent scandal have resulted in a signifi- cantly diminished military. In the midst of a rapidly emerging “revolution in military affairs” (RMA), the Canadian Forces (CF) are poorly positioned to in- troduce next-generation weapon systems.1 At the same time, Canada’s allies, in particular the United States, have undertaken dramatic defense modernization programs. It is this divergence—Canada’s reduced military capability at a time of swiftly advancing technology—that will be the focus of this article

    ACUTA Journal of Telecommunications in Higher Education

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    In This Issue Ahead in the Clouds: ls Outsourcing Right for Higher Education Technology Services? Security: Prepare to Lose Some ADVERTORIAL: Which Way ls UP? The Center for Technology Leadership Mobile Security in the Middle Things You Might (or Might Not) Know about Convergence Planning Reviewing the Lessons from Security 101 How Universities Can Persevere in the Security Marathon Security Snapshots of Three Campuses President\u27s Message From the Executive Director Q&A from the CI

    ACUTA Journal of Telecommunications in Higher Education

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    In This Issue Campus Wireless Needs; DAS lssues to Consider Dead Duck: Don\u27t Let the Next Flap Over Social Media Be Yours New Law Requires Fire Reporting ADVERTORIAL: Centurylink Cloud-Based Services The Never-Ending Conundrum of lllegal Student Downloads Technology and Privacy on the 21st-Century Campus Great Expectations: Cloud Computing Fail to Plan?...Plan to Fail President\u27s Message From the lnterim Executive Director Q&A with the CI

    Meta-classification of remote sensing reflectance to estimate trophic status of inland and nearshore waters

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    Common aquatic remote sensing algorithms estimate the trophic state (TS) of inland and nearshore waters through the inversion of remote sensing reflectance (Rrs ()) into chlorophyll-a (chla) concentration. In this study we present a novel method that directly inverts Rrs () into TS without prior chla retrieval. To successfully cope with the optical diversity of inland and nearshore waters the proposed method stacks supervised classification algorithms and combines them through meta-learning. We demonstrate the developed methodology using the waveband configuration of the Sentinel-3 Ocean and Land Colour Instrument on 49 globally distributed inland and nearshore waters (567 observations). To assess the performance of the developed approach, we compare the results with TS derived through optical water type (OWT) switching of chla retrieval algorithms. Meta-classification of TS was on average 6.75% more accurate than TS derived via OWT switching of chla algorithms. The presented method achieved 90% classification accuracies for eutrophic and hypereutrophic waters and was 12% more accurate for oligotrophic waters than derived through OWT chla retrieval. However, mesotrophic waters were estimated with lower accuracy from both our developed method and through OWT chla retrieval (52.17% and 46.34%, respectively), highlighting the need for improved base algorithms for low - moderate biomass waters. Misclassified observations were characterised by highly absorbing and/or scattering optical properties for which we propose adaptations to our classification strategy

    Remaking Apprenticeships: powerful learning for work and life.

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    This report – Remaking Apprenticeships – commissioned by City & Guilds, reviews the research into the pedagogy of apprenticeships. It makes an argument for putting learning back at the heart of apprenticeships in England and elsewhere.\ud \ud Remaking Apprenticeships traces the history of apprenticeships in order to make sure that knowledge of the past informs thinking today. It describes the elements of a pedagogy of apprenticeships. It explains why how an apprentice learns and who they learn with – the culture within which their vocational formation occurs – is at least as important as what they learn.\ud It identifies three core dimensions of apprenticeship learning

    Adaptive object management for distributed systems

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    This thesis describes an architecture supporting the management of pluggable software components and evaluates it against the requirement for an enterprise integration platform for the manufacturing and petrochemical industries. In a distributed environment, we need mechanisms to manage objects and their interactions. At the least, we must be able to create objects in different processes on different nodes; we must be able to link them together so that they can pass messages to each other across the network; and we must deliver their messages in a timely and reliable manner. Object based environments which support these services already exist, for example ANSAware(ANSA, 1989), DEC's Objectbroker(ACA,1992), Iona's Orbix(Orbix,1994)Yet such environments provide limited support for composing applications from pluggable components. Pluggability is the ability to install and configure a component into an environment dynamically when the component is used, without specifying static dependencies between components when they are produced. Pluggability is supported to a degree by dynamic binding. Components may be programmed to import references to other components and to explore their interfaces at runtime, without using static type dependencies. Yet thus overloads the component with the responsibility to explore bindings. What is still generally missing is an efficient general-purpose binding model for managing bindings between independently produced components. In addition, existing environments provide no clear strategy for dealing with fine grained objects. The overhead of runtime binding and remote messaging will severely reduce performance where there are a lot of objects with complex patterns of interaction. We need an adaptive approach to managing configurations of pluggable components according to the needs and constraints of the environment. Management is made difficult by embedding bindings in component implementations and by relying on strong typing as the only means of verifying and validating bindings. To solve these problems we have built a set of configuration tools on top of an existing distributed support environment. Specification tools facilitate the construction of independent pluggable components. Visual composition tools facilitate the configuration of components into applications and the verification of composite behaviours. A configuration model is constructed which maintains the environmental state. Adaptive management is made possible by changing the management policy according to this state. Such policy changes affect the location of objects, their bindings, and the choice of messaging system
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