7,090 research outputs found
At the computer's edge. The value of virtual constructions to the interpretation of cultural heritage
No full textThe title of this paper is an adaptation of Ian Hodder’s notion that interpretation starts ‘at the trowel’s edge’ (1997), as excavations should be active, reflexive and multivocal practices, during which interpretation takes place as an inextricable part of our research. The process of interpretation is a complicated issue. It has engrossed most practitioners, and is closely related to the conceptualisation of the past as reflecting contemporary social and cultural experiences through the scrutiny of cultural heritage remains. Archaeological remains are under appreciated, as they can be accessed only by specialised audiences, and any finds are presented by means of conventional illustrations and comprehensive list of artefacts. Even the most common recording method in archaeology, i.e. fieldnotes, and the subsequent site reports, have been criticised (Hodder 1989) for their distance and impersonality, as well as their attempt to demonstrate objectivity by establishing rigorous classifications and complex terminologies. For that reason, different forms of media have been used in the interpretive processes, not only in scientific research, but also for providing varied levels of engagement with the archaeological datasets by the public
A. Papadopoulos-Kerameus, Jitija dvoukh vselenskikh patriarkhov XIV v. , svv. Athanasija I i Isidora I
No full textPargoire J. A. Papadopoulos-Kerameus, Jitija dvoukh vselenskikh patriarkhov XIV v. , svv. Athanasija I i Isidora I. In: Échos d'Orient, tome 10, n°62, 1907. p. 64
Cauchy and Puiseux : Two precursors of Riemann
No full textInternational audienceWe review the works of Cauchy and Puiseux on the theory of functions of a complex variable that preceded Riemann's introduction of what soon became known as Riemann surfaces. The work of the two French mathematicians (especially that of Puiseux) inaugurates a group-theoretic point of view which complements the topological one discovered by Riemann. The final version of this paper appears as a chapter in the book From Riemann to differential geometry and relativity (L. Ji, A. Papadopoulos and S. Yamada, ed.) Berlin: Springer, 647 p., 2017
Efficiency of algorithms for shear stress amplitude calculation in critical plane class fatigue criteria
No full textFatigue criteria that belong to the critical plane class necessitate unambiguous definitions of the amplitude and mean value of the shear stress acting on a material plane. This is achieved through the construction of the minimum circle circumscribing the path described by the tip of the shear stress vector on each plane. By definition, the centre and the radius of this circle provide the mean shear stress and the shear stress amplitude, respectively. The search of the minimum enclosing circle is an optimisation problem for which efficient numerical solution schemes are required. Several algorithms exist for similar situations; however these are not necessarily related to the fatigue strength of metals. In this paper some algorithms are studied to assess their computational efficiency within the engineering framework of the application of fatigue criteria of the critical plane type
Comparative study on the efficiency of algorithms for shear stress amplitude calculation
No full textReduction of one and two loop amplitudes at the integrand level
No full textContains fulltext :
98577.pdf (Publisher’s version ) (Open Access)Radboud Universiteit Nijmegen, 02 juli 2012Promotores : Kleiss, R.H.P., Papadopoulos, C.G., Pittau, R.147 p
The role of actor associations in understanding the implementation of lean thinking in healthcare
No full textPurpose: The importance of networks in effecting the outcomes of change processes is well-established in the literature. Whilst extant literature focuses predominantly on the structural properties of networks, our purpose is to explore the dynamics of network emergence that give rise to the outcomes of process interventions. We show how Actor Network Theory (ANT) may be used as a lens for interrogating the way in which management interventions play out in the complex organisational setting of a UK National Health Service Trust, providing insights for management of process change initiatives. Design/methodology/approach: This is a rich qualitative study in the Pathology Unit of a UK National Health Service Trust, using ANT as the theoretical lens for tracking the emergence and transformation of networks of individuals over the course of a management intervention to promote “lean thinking” for performance improvements.Findings: ANT is useful for explicitly tracking how organisational players shift their positions and network allegiances over time, and identifying objects and actions that are effective in engaging individuals in networks enabling transition to a lean process. It is important to attend to the dynamics of the process of change and devise appropriate timely interventions enabling actors to shift their own positions towards a desired outcome.Research limitations/implications: We make the case for using of theoretical frameworks developed outside the operations management to develop insights for designing process interventions.Originality/value: By understanding the role of shifting networks managers can use timely interventions during the process implementation to facilitate the transition to lean processes: e.g. using demonstrable senior leadership commitment and visual communication.<br/
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