411 research outputs found

    Troubling children's families: who's troubled and why? Approaches to inter-cultural dialogue

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    This article draws on multi-disciplinary perspectives to consider the need and the possibilities for inter-cultural dialogue concerning families that may be seen by some to be ‘troubling’. Starting from the premise that ‘troubles’ are a ‘normal’ part of children’s family lives, we consider the boundary between ‘normal’ troubles and troubles that are troubling (whether to family members or others). Such troubling families potentially indicate an intervention to prevent harm to less powerful family members (notably children). On what basis can such decisions be made in children’s family lives, how can this question be answered across diverse cultural contexts, and are all answers inevitably subject to uncertainty? Such questions arguably re-frame and broaden existing debates about ‘child maltreatment’ across diverse cultural contexts. Beyond recognizing power dynamics, material inequalities, and historical and contemporary colonialism, we argue that attempts to answer the question on an empirical basis risk a form of neo-colonialism, since values inevitably permeate research and knowledge claims. We briefly exemplify such difficulties, examining psychological studies of childrearing in China, and the application of neuroscience to early childhood interventions in the UK. Turning to issues of values and moral relativism, we also question the possibility of an objective moral standard that avoids cultural imperialism, but ask whether cultural relativism is the only alternative position available. Here we briefly explore other possibilities in the space between ‘facile’ universalism and ‘lazy’ relativism (Jullien, 2008/2014). Such approaches bring into focus core philosophical and cultural questions about the possibilities for ‘happiness’, and for what it means to be a ‘person’, living in the social world. Throughout, we centralize theoretical and conceptual issues, drawing on the work of Jullien (2008/2014) to recognize the immense complexities inter-cultural dialogue entails in terms of language and communication

    ReSHAPE: A Framework for Dynamic Resizing and Scheduling of Homogeneous Applications in a Parallel Environment

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    Applications in science and engineering often require huge computational resources for solving problems within a reasonable time frame. Parallel supercomputers provide the computational infrastructure for solving such problems. A traditional application scheduler running on a parallel cluster only supports static scheduling where the number of processors allocated to an application remains fixed throughout the lifetime of execution of the job. Due to the unpredictability in job arrival times and varying resource requirements, static scheduling can result in idle system resources thereby decreasing the overall system throughput. In this paper we present a prototype framework called ReSHAPE, which supports dynamic resizing of parallel MPI applications executed on distributed memory platforms. The framework includes a scheduler that supports resizing of applications, an API to enable applications to interact with the scheduler, and a library that makes resizing viable. Applications executed using the ReSHAPE scheduler framework can expand to take advantage of additional free processors or can shrink to accommodate a high priority application, without getting suspended. In our research, we have mainly focused on structured applications that have two-dimensional data arrays distributed across a two-dimensional processor grid. The resize library includes algorithms for processor selection and processor mapping. Experimental results show that the ReSHAPE framework can improve individual job turn-around time and overall system throughput.Comment: 15 pages, 10 figures, 5 tables Submitted to International Conference on Parallel Processing (ICPP'07

    The Digital Archiving of Historical Political Cartoons: An Introduction

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    Political (editorial) cartoons often capture the Zeitgeist of society and convey a message. Increasingly, historians study them to understand commentaries of past events or personalities. Visual culture as an academic subject could be greatly enhanced if this information can be digitally archived. We employ crowdsourcing to obtain valuable metadata by guiding volunteers' feedback using an online survey with 31 targeted questions. We provide intellectual access to a set of about 300 cartoons of a single creator spanning over multiple years in a highly interactive search engine.

    ScALPEL: A Scalable Adaptive Lightweight Performance Evaluation Library for application performance monitoring

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    As supercomputers continue to grow in scale and capabilities, it is becoming increasingly difficult to isolate processor and system level causes of performance degradation. Over the last several years, a significant number of performance analysis and monitoring tools have been built/proposed. However, these tools suffer from several important shortcomings, particularly in distributed environments. In this paper we present ScALPEL, a Scalable Adaptive Lightweight Performance Evaluation Library for application performance monitoring at the functional level. Our approach provides several distinct advantages. First, ScALPEL is portable across a wide variety of architectures, and its ability to selectively monitor functions presents low run-time overhead, enabling its use for large-scale production applications. Second, it is run-time configurable, enabling both dynamic selection of functions to profile as well as events of interest on a per function basis. Third, our approach is transparent in that it requires no source code modifications. Finally, ScALPEL is implemented as a pluggable unit by reusing existing performance monitoring frameworks such as Perfmon and PAPI and extending them to support both sequential and MPI applications.Comment: 10 pages, 4 figures, 2 table

    Explicit Parallel Programming: System Description

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    The implementation of the Explicit Parallel Programming (EPP) system is described. EPP is a prototype implementation of a language for writing parallel programs for shared memory multiprocessors. EPP may be viewed as a coordination language, since it is used to define the sequencing or ordering of various tasks, while the tasks themselves are defined in some other compilable language. The two main components of the EPP system---a compiler and an executive---are described in this report. An appendix is included which contains the grammar defining the EPP language as well as templates used by the compiler in code generation

    Optimization by nonhierarchical asynchronous decomposition

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    Large scale optimization problems are tractable only if they are somehow decomposed. Hierarchical decompositions are inappropriate for some types of problems and do not parallelize well. Sobieszczanski-Sobieski has proposed a nonhierarchical decomposition strategy for nonlinear constrained optimization that is naturally parallel. Despite some successes on engineering problems, the algorithm as originally proposed fails on simple two dimensional quadratic programs. The algorithm is carefully analyzed for quadratic programs, and a number of modifications are suggested to improve its robustness

    Data and Activity Representation for Grid Computing

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    Computational grids are becoming increasingly popular as an infrastructure for computa- tional science research. The demand for high-level tools and problem solving environments has prompted active research in Grid Computing Environments (GCEs). Many GCEs have been one-o development eorts. More recently, there have been many eorts to dene component ar- chitectures for constructing important pieces of a GCE. This paper examines another approach, based on a `data-centric' framework for building powerful, context-aware GCEs spanning mul- tiple layers of abstraction. We describe a scheme for representing data and activities in a GCE and outline various tools under development which use this representation
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