52 research outputs found

    美学之外的美育视角——汉宝德美育方案述评

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    美育是台湾建筑大师汉宝德关注的重点之一,汉宝德曾撰文谈论台湾美育的现状、问题及解决办法,笔者将其一套内容称为汉宝德的美育方案.本文首先介绍其美育方案的主要内容,将其概括为形式美中心的大众美感教育,并阐述其美育的出发点以及美育实施办法.笔者认为,这是一套基于社会文化批评的美育改革方案,其社会政策意义大于思想深度,但即便如此,还是发挥出批判台湾美育现状的作用,给人以警醒,使美育在反思中前进

    Electrodeposition of Active Platinum on Stainless Steel

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    采用低毒、较缓和条件下预处理不锈钢基底 ,在电沉积过程中引入超声波振荡技术 ,并筛选出最佳电流密度组合进行电沉积 ,制备出与基底粘结牢固、析氢电催化性能高的不锈钢镀铂电极。从电极的双层电容值可推出电极活性的改善主要归因于表面粗糙度的增加。The substrate of stainless steel was pretreated under low toxic and moderate conditions. Ultrasonic agitation technology was employed in the process of electodeposition. In addition, the optimal combination of current densities was selected. As a result, platinum plated stainless steel electrode which not only was adherent to the substrate but also possessed excellent electrocatalyticproperty for HER was prepared. It can be deduced from the measured values of the double layer capacity of the electrode that the improvement of the electrode activity was mainly due to the increase in surface roughness of the electrode.厦门大学固体表面物理化学国家重点实验室资助!课题 ( 950 1

    GeSi/Si多层异质外延载流子浓度的分布

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    通过实验研究了一种与Ge_xSi_(1-x)合金表面具有良好电化学界面的电解液,利用电化学C-V方法研究了多层Ge_xSi_(1-x)/Si异质外延材料的载流子浓度纵向分布。实验结果表

    context-aware data reba-lancing for distributed cache

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    为了改善数据重均衡的效果及减小数据迁移对系统性能的影响,提出一种上下文感知的数据重均衡方法。构建迁移时间预测模型,以刻画虚拟机环境上下文对数据迁移的影响,据此提出基于细粒度资源监测的上下文感知的数据重均衡算法CADR。实验结果表明,该迁移时间预测模型具有较低的错误率;CADR算法与传统数据重均衡算法相比,能够提供更好的均衡效果及更短的迁移时间。国家973重点基础研究发展计划基金项目(2009CB320704)|国家自然科学基金项目(61173003)|国家科技重大专项“核高基”基金项目(2011ZX03002-002-01)In order to improve the effect of data rebalancing and reduce the impact of data migration, a context-aware data reba-lancing approach is proposed. First, a predictive model of migration time is presented to depict the impact of virtualization context on data migration. Then a context-aware data rebalancing algorithm (CADR) is provided based on fine-grained resource monitoring. The experiments show that our prediction model of migration time has a low error rate, and CADR can improve perfor-mance compared with a typical data rebalancing algorithm

    高频无磁脉冲管制冷机尼龙丝网分析

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    要为冷却包括SQUID在内的高灵敏度高温超导器件,开发了液氮温区无磁非金属材料制作的高频脉冲管制冷机冷指,在风冷、60W输入条件下可达到74K制冷温度,80K提供0.1W制冷量。作为无磁非金属化的关键,回热器蓄冷填料无磁化采用了尼龙丝网,以取代常用的不锈钢丝网。本文分析表了由此带来的热容,换热和流动阻力方面的变化

    (Ni-Mo)-WC Composite Electrode and Its Electrocatalytic Properties of Evoluting Hydrogen

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    在两种不同类型镀液中,用复合电沉积技术制备出(nI-MO)-WC复合电极.研究了其镀层形貌、组成和XPS光电子能谱.用这些电极在7MOl/lkOH溶液中作析氢反应电极,结果表明它们对氢的析出反应具有优良电催化活性.文中还对它们的催化性能进行了评价.This paper reports the electrodepositing (Ni-Mo)-WC composite coatings From two diFFerent electro bath.The shape,compose and XPS of the composite coatings was studied.In alkaline solution the electrocatalytic properties of evoluting hydrogen were investigated.The results show that the composite electrodes were provided with superior electrocatalytic activity.The electrocatalytic perFormances were appraised.厦门大学固体表面物理化学国家重点实验室资
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