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31.
Can states as well as non-state political ‘actors’ learn from the history of cognate entities elsewhere in time and space, and if so how and when does this policy knowledge get ‘transferred’ across international borders? This article deals with this question, addressing a short-lived Hungarian ‘tutorial’ that, during the early twentieth century, certain policy elites in Ireland imagined might have great applicability to the political transformation of the Emerald Isle, in effect ushering in an era of political autonomy from the United Kingdom, and doing so via a ‘third way’ that skirted both the Scylla of parliamentary formulations aimed at securing ‘home rule’ for Ireland and the Charybdis of revolutionary violence. In the political agenda of Sinn Féin during its first decade of existence, Hungary loomed as a desirable political model for Ireland, with the party’s leading intellectual, Arthur Griffith, insisting that the means by which Hungary had achieved autonomy within the Hapsburg Empire in 1867 could also serve as the means for securing Ireland’s own autonomy in the first decades of the twentieth century. This article explores what policy initiatives Arthur Griffith thought he saw in the Hungarian experience that were worthy of being ‘transferred’ to the Irish situation.  相似文献   
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While most discussions of the international efforts at post-war exploitation of German science and technology by the Allied occupation powers assume similar methods and aims across the nations involved, the French case diverges in important ways because of a fundamentally different understanding of technology transfer. The Americans and British hoped to enlist the French in exploitation programmes similar to their own, and to an extent succeeded, but persistent distrust of French motives largely prevented this co-operation from forging similarities beyond the surface level. French policy-makers’ alternate conception of science and technology as socially embedded led to very different strategies for exploiting German advances, and despite post-war antagonism, led to Franco-German research collaboration that would prove valuable building relationships between these nations.  相似文献   
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Stable isotope analysis of charred archaeobotanical cereal grains has the potential to provide direct evidence of crop growing conditions in the past and to refine palaeodietary predictions. If isotope values of archaeobotanical material are to be considered robust, it is necessary to characterise the compositional changes associated with their charring and burial. This study used a suite of analytical techniques, including FT-IR and solid state 13C NMR, to characterise changes in the biochemical composition of modern einkorn grains with heating at 230 °C for 2 h, 4 h, 8 h and 24 h, encompassing conditions that replicate their undistorted ancient counterparts. The biochemical composition of archaeobotanical charred einkorn grains was also investigated by FT-IR and solid state 13C NMR in order to assess the changes in composition which occur during burial. Results of FT-IR and solid-state 13C NMR show that heating of modern einkorn grains resulted in Maillard reactions between cereal proteins and starch, forming high molecular weight melanoidins, which contain both alkyl and aromatic carbon. Loss of low molecular weight carbon and nitrogen-containing volatiles resulted in a slight but non-systematic increase in the δ13C values and a systematic increase of 0.8‰ in the δ15N values of the charred einkorn grains. Solid-state 13C NMR shows that the ancient charred einkorn grains consisted entirely of aromatic carbon and retained a similar proportion of nitrogen to their modern 24 h charred counterparts, despite a significantly lower concentration of amino acids. This indicates that the amino acid nitrogen in the ancient charred grains was retained in the stable melanoidins whose polymeric structure makes them resistant to subsequent degradation.  相似文献   
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In December 1893 the Conservative candidate for Flintshire addressed an audience at Mold Constitutional Club. After he had finished attacking Gladstone and the local Liberal incumbent, he ended his speech with a joke. He advised the Conservative party to adopt, with regard to the government, the sign of an American undertaker: ‘You kick the bucket; we do the rest’. How did a sign belonging to a Nevadan undertaker become the subject of a joke told at a political meeting in North Wales? This unlikely question forms the basis of this article. Using new digital archives, it tracks the journey of the gag from its origins in New York, its travels around America, its trip across the Atlantic, its circulation throughout Britain and its eventual leap into political discourse. The article uses the joke to illuminate the workings of a broader culture of transatlantic reprinting. During the final quarter of the nineteenth century miscellaneous ‘snippets’ cut from the pages of the American press became a staple feature of Britain's bestselling newspapers and magazines. This article explores how these texts were imported, circulated and continually rewritten in dynamic partnership between authors, editors and their readers.  相似文献   
35.
This paper presents the results of a comprehensive comparison study between the analytically predicted and experimentally identified dynamics of the shaking table system built recently in the Structural Engineering Laboratory at Rice University in Houston, Texas. The primary objectives of the research presented here are two-fold: (1) to shed light into the dynamic performance of asmall-tc-medium size, uni-axial, servo-hydraulic, displacement-controlled shaking table system, and (2) to validate a linearised dynamic model of the system (in the form of the total shaking table transfer function) developed earlier by the authors from basic principles. The analytical model incorporates the inherent dynamic characteristics of the various components of the shaking table system (i.e. controller, servovalve, actuator, test specimen, and reaction mass) and their dynamic interaction.

The test-analysis correlation study performed over a wide range of operating and payload conditions provides useful information on the sensitivity of the shaking table transfer function to control gain parameters and how it can be used to tune the shaking table controller for optimum performance under various payload conditions. The good test-analysis correlation results obtained validate the analytical shaking table model, show its robustness, and provide keen insight into the underlying coupled dynamics of a shaking table system. In order to achieve this good test-analysis correlation, it was crucial to include a time delay in the analytical model of the shaking table system (innovative feature of the model to account for the time lag in the response of the servovalve-actuator system). The expected significant dynamic interaction between payload and shaking table is also confirmed by this study.  相似文献   
36.
基于GIS的西安市城市扩展与模拟研究   总被引:4,自引:0,他引:4  
本文以西安市为研究区域,以2002年ETM影像和2007年TM影像遥感数据为城市扩展动态变化的主要信息来源,采用逻辑回归模型并结合GIS技术对西安市的城市空间扩展进行模拟。研究选取了道路、河流、地裂缝、地面沉降、人口和GDP等6个因子,建立了西安市城市扩展的逻辑回归模型,并根据所建立的模型对西安市的城市扩展进行了模拟,结果表明,所建立的逻辑回归模型能够较好地模拟西安市的城市扩展,对西安市城市扩展的驱动力具有较强的解释作用,其中对城市扩展影响最重要的因素为距道路距离。  相似文献   
37.
易溶盐富集是陕西西安大雁塔砖体表面风化、结构破坏、强度衰减的主要原因。为分析盐害对大雁塔砖体结构、强度的影响机理,采用以饱和硫酸钠溶液为介质,对大雁塔砖体进行易溶盐结晶循环模拟劣化试验。在Na2SO4反复结晶、溶解过程中,测定试样的质量、波速及单轴抗压强度等指标,分析其变化规律。结果表明,在盐害作用下,试验砖体表现出与塔体表面类似的风化破坏现象;Na2SO4晶体在试样孔隙内不断发育,晶体挤压效应导致孔隙率增大,内部结构破损;质量、波速、单轴抗压强度随循环的次数呈先增加后减小的变化规律。砖体对盐害耐受力约为砖体质量的0.5%。  相似文献   
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When it comes to existing buildings, the estimation of the structural residual bearing capacity is required to evaluate the potential for reuse/conversion. The level of detail and accuracy of surveys dramatically affect structural diagnostics. In order to optimise the experimental survey process, a simulation of the structural life-cycle may be useful.

Based on a previously developed approach of Monte Carlo simulation implemented with a damage law for the life-cycle analysis of newly designed constructions, this paper presents the method application to a historic roof steel structure. It aims to identify critical situations, assess the residual life of the system, and plan possible retrofit strategies for the building conversion.

The case study is a steel frame roof structure of the ex pig abattoir within the complex of the municipal slaughterhouse in Monza (close to Milan, Northern Italy) and protected from the Cultural Heritage Authority. The life-cycle of the structure is here investigated over different stages of the building lifespan along with the damages caused by aging and negligence. The construction was built in 1902, and abandoned in 1984. Therefore, the periods analysed are: from construction to disuse and from disuse to today. The second phase of life, still on going, has significantly sped up the degradation.

The probabilistic evaluation of failure times is discussed and the possible interventions scenarios in terms of costs, and after-maintenance reliability and safety are investigated.  相似文献   

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