1,721,336 research outputs found
Les premières fouilles à Dampier (Australie occidentale) et leur place dans l'ensemble australien
No full textLorblanchet Michel, Jones Rhys. Les premières fouilles à Dampier (Australie occidentale) et leur place dans l'ensemble australien. In: Bulletin de la Société préhistorique française, tome 76, n°10-12, 1979. Études et Travaux. pp. 463-487
Devolution, state personnel, and the production of new territories of governance in the United Kingdom
No full textAs a result of the creation of a Scottish Parliament, Welsh and Northern Irish Assemblies, and the devolution of power to various regional bodies in England, there has been a substantial territorial refocusing of governance within the United Kingdom. Much has been written in the social and political sciences concerning this change, especially with regard to the formation of new institutions of governance. Less is known concerning the connections between state personnel and this institutional and territorial transformation. In this paper we seek to remedy this deficiency. Drawing on empirical evidence from the English regions, we suggest that devolution is shaped by, and also shapes, the actions and strategies of a variety of state personnel in the different territories. Developing the idea of the state as a 'peopled organisation', we thus emphasise the significance of state personnel in actively producing the United Kingdom's new territories and scales of governance. This allows for an examination of the ways in which state personnel, working within different territorial branches and scales of the state, are able to accommodate, revise, or resist broader political projects
Fractals and the lead crack airframe lifing framework
Full text linkAbstractThe physically short crack regime is primary region of interest in the design and sustainment of highly optimised metallic aircraft. The authors have previously shown that by characterising a fracture surface using fractals concept produces a crack growth model similar to that first proposed by Frost and Dugdale in 1958. This provides a scientific basis to the crack growth model. Further investigations revealed that for short cracks these models predict that crack growth is exponentially related to the applied load history. This observation has led to a practical aircraft lifing approach applicable to the short crack regime known as the lead crack framework. This paper summarises the fractality of metallic fracture surfaces, presents examples of the crack growth behaviour in complex structures, and summarises some useful crack growth tools
Using the lead crack concept and fractal geometry for fatigue lifing of metallic structural components
No full textDesign of several metallic structural components, for instance in aerospace applications, should take into account the physically short crack behaviour. By characterising a fracture surface using fractals concepts, crack growth models similar to that proposed by Frost and Dugdale in 1958 and Hartman and Schjive in 1970 can be obtained. For short cracks, these models predict exponential crack growth with respect to the applied load history, and that has led to a practical aircraft lifing approach known as the lead crack framework. The present paper describes the fractality of metallic fracture surfaces and the crack growth behaviour in some fatigue tests
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
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