Bibliografías temáticas / Vale of (Wales)

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Literatura académica sobre el tema "Vale of (Wales)"

Autor: Grafiati

Publicado: 4 de junio de 2021

Última modificación: 14 de febrero de 2022

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Artículos de revistas sobre el tema "Vale of (Wales)"

Williams, D. E. "St Paul's Footbridge, Ebbw Vale, Wales—landmark structure". Proceedings of the Institution of Civil Engineers - Bridge Engineering 159, n.º 2 (junio de 2006): 77–81. http://dx.doi.org/10.1680/bren.2006.159.2.77.

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BROOKS, M., M. MILIORIZOS y B. V. HILLIER. "Deep structure of the Vale of Glamorgan, South Wales, UK". Journal of the Geological Society 151, n.º 6 (noviembre de 1994): 909–17. http://dx.doi.org/10.1144/gsjgs.151.6.0909.

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HINCH, LW y PG FOOKES. "TAFF VALE TRUNK ROAD STAGE 4, SOUTH WALES 2: GEOTECHNICAL DESIGN." Proceedings of the Institution of Civil Engineers 86, n.º 1 (febrero de 1989): 161–88. http://dx.doi.org/10.1680/iicep.1989.1146.

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HINCH, LW y PG FOOKES. "TAFF VALE TRUNK ROAD STAGE 4, SOUTH WALES 1: LOCATION AND GEOLOGY." Proceedings of the Institution of Civil Engineers 86, n.º 1 (febrero de 1989): 139–60. http://dx.doi.org/10.1680/iicep.1989.1145.

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HINCH, L., CD WARREN, P. FOOKES y MP OREILLY. "DISCUSSION: TAFF VALE TRUNK ROAD STAGE 4, SOUTH WALES 2: GEOTECHNICAL DESIGN." Proceedings of the Institution of Civil Engineers 86, n.º 5 (octubre de 1989): 1021–23. http://dx.doi.org/10.1680/iicep.1989.3173.

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Morgan, MA, M. Goodson, X. Escofet, GWB Clark y WG Lewis. "Workload and Resource Implications of Upper Gastrointestinal Cancer Surgical Centralisation in South East Wales". Annals of The Royal College of Surgeons of England 90, n.º 6 (septiembre de 2008): 467–71. http://dx.doi.org/10.1308/003588408x301127.

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INTRODUCTION The aim of this study was to determine whether one specialist unit could manage all patients diagnosed with oesophagogastric cancer in Gwent and Cardiff and Vale NHS Trusts over a 6-month period with regard to workload, resource and training opportunities. PATIENTS AND METHODS All patients diagnosed with oesophagogastric (OG) cancer in Gwent and Cardiff and Vale NHS Trusts and referred to the regional South East Wales Upper GI multidisciplinary team over the 6-month period from 1 July to 31 December 2005 were studied prospectively and compared with the previous 6-month caseload at Cardiff and Vale. RESULTS Out-patient workload increased from 160 new (33 OG cancers) and 533 follow-up patients (161 OG cancers) between 1 January and 30 June 2005, to 290 new (68 OG cancers, 106% increase) and 865 follow-up patients (230 OG cancers, 43% increase) between 1 July, and 31 December 2005. The number of patients undergoing radical surgery increased from 14 to 23 (D2 gastrectomy 8 versus 13; oesophagectomy 6 versus 10). Cancer-related workload in the latter period generated 118 intermediate equivalents (IEs) of operative work for two specialist surgeons and one SpR occupying 38% of the total time available on 104 scheduled operating lists, compared with 64 IEs in the previous 6 months, representing an 84% increase in cancer-related operative training opportunities. CONCLUSIONS Centralisation of oesophagogastric cancer surgery is feasible and desirable if national guidelines are to be satisfied, and this strategy has significant positive implications for surgical training and audit.

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Collar, F. A. "A geophysical interpretation of the structure of the Vale of Clwyd, North Wales". Geological Journal 9, n.º 1 (30 de abril de 2007): 65–76. http://dx.doi.org/10.1002/gj.3350090106.

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Whittred, Greg. "Vale to Ronald Ma: Emeritus Professor of Accounting, The University of New South Wales". Accounting and Finance 44, n.º 2 (julio de 2004): 121–22. http://dx.doi.org/10.1111/j.1467-629x.2004.00110.x.

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Hawkins, T. R. W. y F. G. Jones. "Fold and cleavage development within cambrian metasediments of the vale of ffestiniog, North Wales". Geological Journal 16, n.º 1 (30 de abril de 2007): 65–84. http://dx.doi.org/10.1002/gj.3350160107.

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Beynon, Claire. "Dementia health needs assessment for Cardiff and Vale University Health Board, Wales: a qualitative study". Lancet 390 (noviembre de 2017): S23. http://dx.doi.org/10.1016/s0140-6736(17)32958-6.

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Tesis sobre el tema "Vale of (Wales)"

Clark, Dudley Charles. "Revolt and revival in the valleys : the influence of religion and revivalism on the politics and labour relations of the Taff Vale Railway, South Wales, 1878-1914". Thesis, University of Leeds, 2012. http://etheses.whiterose.ac.uk/12753/.

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This thesis considers the social, political and religious changes affecting south Wales in the late Victorian and Edwardian periods through a holistic study of the lives of the men employed by the Taft Vale Railway (TVR). Its importance derives from four novel features. At its core are the employees of an entire railway company, not just a single centre or grade, and it has been informed by a wide range of disciplines from anthropology to theology. It has provided a closely observed examination of east Glamorgan society over the period, and it is emphasised that religion and politics were inextricably entwined in much of Welsh society. A contribution is made to the ongoing debate on the nature of community and its usefulness as a concept, and from this a 'Network Community' is proposed as a concept or investigative tool for use by social historians. The management's treatment of its workforce and the control strategies employed by companies through paternalism, welfarism and discipline are analysed. The Taft Vale dispute of 1900 is set in the context of the company's industrial relations history, and Ammon Beasley, General Manager 1891-1917, is shown to have been of greater importance to labour history than has been recognised. The fault lines in the realms of religion and politics, their influence on the company and the communities it served, and the denominational involvement of the TVA workmen are investigated. It draws attention to the fact that religion still played a ubiquitous role in the mores and culture of late-Victorian and Edwardian society. In south Wales this was dramatically enhanced by the phenomenon of religious revival; that of 1904-05 is shown to have been facilitated by the technology of the period, including the Taft Vale Railway, but without much impact on the railwaymen.

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Lloyd, Tim. "Present value models of agricultural land prices in England and Wales". Thesis, University of Nottingham, 1992. http://eprints.nottingham.ac.uk/11753/.

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This study employs recently developed techniques in time series econometrics to estimate linear models of equilibrium price determination in a competitive market for durable assets. Motivating this study is the unstructured approach employed in previous land price research, where the theoretical model of agent behaviour is invariably mis-specified or left undeveloped and the empirical model prone to the problems of spurious regression. The joint issues of theoretical and statistical congruence play important roles here. Specifically, a theoretical model is developed in which market participants are assumed to price land using present value methods. At the market level this yields a reduced form expression of equilibrium price determination which can be estimated empirically using aggregate data for England and Wales. The concepts of error correction and cointegration are then investigated and applied to the land price model. A unique long run relationship is identified between real agricultural land prices, inflation and real agricultural rents. Taking account of inflation-hedging as a motivation for acquiring farmland, land prices are shown to be principally determined by the returns to land, as embodied by market rents. The empirical model is also congruent with theoretical predictions regarding the unit elasticity between asset prices and returns. The error correction representation of the cointegrating set indicates that the short run response of land prices to rent and inflation is larger than the long run response. Consequently, land prices initially overshoot their equilibrium values following changes in rents or inflation. The period of adjustment to long run equilibrium lasts around three or fours years. The long run real rate of discount on agricultural land is estimated at 3.6% confirming the widely held belief that real rates of return on farmland are low. Present value models incorporating naive, adaptive and rational expectations are also estimated and the adaptive model is favoured by the data.

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Harvey, Neil William. "Heat transfer on nozzle guide vane end walls". Thesis, University of Oxford, 1991. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.293454.

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Sampaio, Joao Miguel Ramos Melo. "Domain walls in spin-valve nanotracks : characterisation and applications". Thesis, Imperial College London, 2011. http://hdl.handle.net/10044/1/9053.

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Magnetic systems based on the manipulation of domain walls (DWs) in nanometre-scaled tracks have been shown to store data at high density, perform complex logic operations, and even mechanically manipulate magnetic beads. The magnetic nano-track has also been an indispensable model system to study fundamental magnetic and magneto-electronic phenomena, such as field induced DW propagation, spin-transfer torque, and other micromagnetic properties. Its value to fundamental research and the breath of potentially useful applications have made this class of systems the focus of wide research in the area of nanomagnetism and spintronics. This thesis focuses on DW manipulation and DW-based devices in spin-valve nanotracks. The spin-valve is a metallic multi-layered spintronic structure, wherein the electrical resistance varies greatly with the magnetisation of its layers. In comparison to monolayer tracks, the spin-valve track enables more sensitive and versatile measurements, as well as demonstrating electronic output of DW-based devices, an achievement of crucial interest to technological applications. However, these multi-layered tracks introduce new, potentially disruptive magnetic interactions, as well as fabrication challenges. In this thesis, the DW propagation in spin-valve nanotracks of different compositions was studied, and a system with DW propagation properties comparable to the state-of-the-art in monolayer tracks was demonstrated, down to an unprecedented lateral size of 33nm. Several DW logic devices of variable complexity were demonstrated and studied, namely a turn-counting DW spiral, a DW gate, multiple DW logic NOT gates, and a DW-DW interactor. It was found that, where the comparison was possible, the overall magnetic behaviour of these devices was analogous to that of monolayer structures, and the device performance, as defined by the range of field wherein they function desirably, was found to be comparable, albeit inferior, to that of their monolayer counterparts. The interaction between DWs in adjacent tracks was studied and new phenomena were observed and characterised, such as DW depinning induced by a static or travelling adjacent DW. The contribution of different physical mechanisms to electrical current induced depinning were quantified, and it was found that the Oersted field, typically negligible in monolayer tracks, was responsible for large variations in depinning field in SV tracks, and that the strength of spin-transfer effect was similar in magnitude to that reported in monolayer tracks. Finally, current induced ferromagnetic resonance was measured, and the domain uniform resonant mode was observed, in very good agreement to Kittel theory and simulations.

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Pike, Kathrine Louise. "Social value associated with marine and coastal protected area designations in England and Wales". Thesis, Southampton Solent University, 2010. http://ssudl.solent.ac.uk/1428/.

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There is a current environment of change and progress within marine protection, reflected internationally by examples such as the Convention of Biological Diversity and nationally by the Marine and Coastal Access Act, 2009. Despite the UK's government agenda in this area, and the draw of people to coastal areas generally, the larger UK public lacks understanding and awareness regarding the marine environment. Combined with these circumstances, the social value of Marine and Coastal Protected Areas (MCPAs) has been largely ignored relative to conservation and economics drivers, with the latter invariably taking precedence in environmental policy making. There is also a need for an appropriate framework or methodology with which to address the above in light of communicating, particularly the nontangible, social values of MCPAs to decision makers. This research investigates the social value of MCPAs in England and Wales through three data collection phases. These include a series of interviews to gain a perspective of social value from MCPA practitioners and the public. The emerging results are then examined in light of their operational value through in-depth case studies. The results led to the development of two assessment tools of social value which can accommodate both tangible and intangible values. The tools included a normative statement of examples demonstrating optimum social value, and a social value zoning tool that allows practitioners to 'map' the social value of their MCPA for evaluative purposes. The final research findings are represented by a conceptual model of social value within MCPAs. The assessment tools and model assist with the clarification of social value within MCPAs and can be used by decision makers to assess and communicate the social value of their site and influence management practice. This work demonstrates social value of MCPAs from several view pointsand develops tools which can be used by MCPA decision makers to evaluate, and further develop social value within these areas.

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Acosta, Antonio Ramon. "Existence of traveling waves and applications". Diss., Georgia Institute of Technology, 1998. http://hdl.handle.net/1853/28677.

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Tee, Key Yong. "Twistor methods to the initial value problem of gravitational plane waves interaction". Thesis, University of Oxford, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.268161.

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Canga, P. "Detention of minors in the United Kingdom and Turkey as an immigration policy : assessing the predictive value of human rights compliance theory". Thesis, City, University of London, 2017. http://openaccess.city.ac.uk/19259/.

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The end of World War II was the beginning of an era of promises being made for the protection of human rights. Since then, the international community has established a variety of legal instruments that aim to achieve this protection. These legal instruments at the international level provide certain standards for states to fulfil, such as the right to a fair trial and prohibition of arbitrary detention. Despite the growing international human rights network including several official and non-official actors, non-compliance with international protection standards by states is still a serious challenge within the system. The ever-enlarging literature on international law compliance theories persistently seeks to find ways to overcome this problem. Immigration detention of children, one of the human rights issues on which the international network has provided guidance to states, has been practiced by Turkish and British immigration authorities for a considerable period of time. This practice has been justified on the grounds of efficient immigration control. Nevertheless, these two countries recently took legislative steps towards compliance with international human rights standards regarding immigration detention of minors. This research investigated these processes in Turkey and the UK to find out whether there were any actors that influenced the decision to change legislation by applying a selected compliance theory that focuses on socialisation between various actors such as courts and international monitoring bodies and the state. It was clear that these two very different countries reached the same conclusions via distinct routes, in reference to different reasons and motivations. While the theory’s predictive value showed only limited success in the UK’s case due to its reliance on socialisation and international law, it had high explanatory power for Turkey’s case. Nonetheless, it still demonstrated the importance of identifying actors capable of influencing decisionmaking of states to further strengthen the system of protection of human rights.

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Lacroix-A-Chez-Toine, Bertrand. "Extreme value statistics of strongly correlated systems : fermions, random matrices and random walks". Thesis, Université Paris-Saclay (ComUE), 2019. http://www.theses.fr/2019SACLS122/document.

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La prévision d'événements extrêmes est une question cruciale dans des domaines divers allant de la météorologie à la finance. Trois classes d'universalité (Gumbel, Fréchet et Weibull) ont été identifiées pour des variables aléatoires indépendantes et de distribution identique (i.i.d.).La modélisation par des variables aléatoires i.i.d., notamment avec le modèle d'énergie aléatoire de Derrida, a permis d'améliorer la compréhension des systèmes désordonnés. Cette hypothèse n'est toutefois pas valide pour de nombreux systèmes physiques qui présentent de fortes corrélations. Dans cette thèse, nous étudions trois modèles physiques de variables aléatoires fortement corrélées : des fermions piégés,des matrices aléatoires et des marches aléatoires. Dans la première partie, nous montrons plusieurs correspondances exactes entre l'état fondamental d'un gaz de Fermi piégé et des ensembles de matrices aléatoires. Le gaz Fermi est inhomogène dans le potentiel de piégeage et sa densité présente un bord fini au-delà duquel elle devient essentiellement nulle. Nous développons une description précise des statistiques spatiales à proximité de ce bord, qui va au-delà des approximations semi-classiques standards (telle que l'approximation de la densité locale). Nous appliquons ces résultats afin de calculer les statistiques de la position du fermion le plus éloigné du centre du piège, le nombre de fermions dans un domaine donné (statistiques de comptage) et l'entropie d'intrication correspondante. Notre analyse fournit également des solutions à des problèmes ouverts de valeurs extrêmes dans la théorie des matrices aléatoires. Nous obtenons par exemple une description complète des fluctuations de la plus grande valeur propre de l'ensemble complexe de Ginibre.Dans la deuxième partie de la thèse, nous étudions les questions de valeurs extrêmes pour des marches aléatoires. Nous considérons les statistiques d'écarts entre positions maximales consécutives (gaps), ce qui nécessite de prendre en compte explicitement le caractère discret du processus. Cette question ne peut être résolue en utilisant la convergence du processus avec son pendant continu, le mouvement Brownien. Nous obtenons des résultats analytiques explicites pour ces statistiques de gaps lorsque la distribution de sauts est donnée par la loi de Laplace et réalisons des simulations numériques suggérant l'universalité de ces résultats
Predicting the occurrence of extreme events is a crucial issue in many contexts, ranging from meteorology to finance. For independent and identically distributed (i.i.d.) random variables, three universality classes were identified (Gumbel, Fréchet and Weibull) for the distribution of the maximum. While modelling disordered systems by i.i.d. random variables has been successful with Derrida's random energy model, this hypothesis fail for many physical systems which display strong correlations. In this thesis, we study three physically relevant models of strongly correlated random variables: trapped fermions, random matrices and random walks.In the first part, we show several exact mappings between the ground state of a trapped Fermi gas and ensembles of random matrix theory. The Fermi gas is inhomogeneous in the trapping potential and in particular there is a finite edge beyond which its density vanishes. Going beyond standard semi-classical techniques (such as local density approximation), we develop a precise description of the spatial statistics close to the edge. This description holds for a large universality class of hard edge potentials. We apply these results to compute the statistics of the position of the fermion the farthest away from the centre of the trap, the number of fermions in a given domain (full counting statistics) and the related bipartite entanglement entropy. Our analysis also provides solutions to open problems of extreme value statistics in random matrix theory. We obtain for instance a complete description of the fluctuations of the largest eigenvalue in the complex Ginibre ensemble.In the second part of the thesis, we study extreme value questions for random walks. We consider the gap statistics, which requires to take explicitly into account the discreteness of the process. This question cannot be solved using the convergence of the process to its continuous counterpart, the Brownian motion. We obtain explicit analytical results for the gap statistics of the walk with a Laplace distribution of jumps and provide numerical evidence suggesting the universality of these results

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Nicolet, Pascale. "The classification and conservation value of wetland plant and macroinvertebrate assemblages in temporary ponds in England and Wales". Thesis, Oxford Brookes University, 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.271278.

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Libros sobre el tema "Vale of (Wales)"

Tudgay, Alan. Ebbw Vale through time. Stroud: Amberley, 2011.

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Maddern, Ralph. Walk in the romantic vale of Ffestiniog, Porthmadog, Cricieth. Windsor, Berkshire: Focus Publications, 1994.

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Keith, Thomas. James Street, Ebbw Vale: A history of Methodism : written to mark the opening of St. James Methodist Church, Eureka Place, Ebbw Vale on 30th March 1986. Ebbw Vale: Kerin, 1987.

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Briwnant-Jones, Gwyn. The Vale of Neath Line: From Neath to Pontypool Road. Llandysul, Wales, United Kingdom: Gomer, 1996.

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Smith, Eric. Bethel Methodist Church, Beaufort, Ebbw Vale: A history celebrating 150 years 1851-2001. Cwmbran: Kerin Publishers, 2001.

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Emery, Anthony. Greater medieval houses of England and Wales, 1300-1500: Southern England. Cambridge: Cambridge University Press, 2006.

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Cuckoo marans in the taproom: An innkeeper in the Vale of Glamorgan. London: J. Murray, 1985.

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Brock, Derek. Cuckoo Marans in the taproom: An innkeeper in the Vale of Glamorgan. Bath: Chivers, 1986.

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Yerburgh, David S. An attempt to depict the Vale of Neath in South Wales: A pictorial journey around the Vale of Neath as undertaken by William Weston Young in 1835. Salisbury: D. Yerburgh, 2001.

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Circular walks in the Vale of Glamorgan. Llanrwst, Wales: Gwasg Carreg Gwalch, 2000.

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Capítulos de libros sobre el tema "Vale of (Wales)"

Britnell, Mark. "Value Walks". En In Search of the Perfect Health System, 178–85. London: Macmillan Education UK, 2015. http://dx.doi.org/10.1007/978-1-137-49662-1_30.

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Guenther, Ronald B. y John A. Crow. "Damping of Shallow Water Waves". En Free Boundary Value Problems, 59–65. Basel: Birkhäuser Basel, 1990. http://dx.doi.org/10.1007/978-3-0348-7301-7_5.

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Greenough, Patrick. "Deflationism and Truth Value Gaps". En New Waves in Truth, 115–25. London: Palgrave Macmillan UK, 2010. http://dx.doi.org/10.1057/9780230296992_8.

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Wolf, T., M. Estorf y R. Radespiel. "Numerical rebuilding of the flow in a valve-controlled Ludwieg tube". En Shock Waves, 665–70. Berlin, Heidelberg: Springer Berlin Heidelberg, 2009. http://dx.doi.org/10.1007/978-3-540-85168-4_107.

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Pedlosky, Joseph. "The Initial Value Problem". En Waves in the Ocean and Atmosphere, 41–52. Berlin, Heidelberg: Springer Berlin Heidelberg, 2003. http://dx.doi.org/10.1007/978-3-662-05131-3_5.

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Andreou, Chrisoula. "Choosing Well: Value Pluralism and Patterns of Choice". En New Waves in Ethics, 48–63. London: Palgrave Macmillan UK, 2011. http://dx.doi.org/10.1057/9780230305885_4.

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Haddad, Yehia M. "Viscoelastic Waves and Boundary Value Problem". En Mechanical Behaviour of Engineering Materials, 217–94. Dordrecht: Springer Netherlands, 2000. http://dx.doi.org/10.1007/978-94-010-0436-7_7.

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Heuer, Ulrike. "Beyond Wrong Reasons: The Buck-Passing Account of Value". En New Waves in Metaethics, 166–84. London: Palgrave Macmillan UK, 2011. http://dx.doi.org/10.1057/9780230294899_9.

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Pedlosky, Joseph. "Discussion of Initial Value Problem (Continued)". En Waves in the Ocean and Atmosphere, 53–58. Berlin, Heidelberg: Springer Berlin Heidelberg, 2003. http://dx.doi.org/10.1007/978-3-662-05131-3_6.

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Actas de conferencias sobre el tema "Vale of (Wales)"

Lewis, Heledd, Joanne Hayes y Hannah Osborn. "111 Out of hours support: a review of the 24 hour advice line for south east wales from marie curie hospice cardiff and the vale". En The APM’s Supportive & Palliative Care Conference, Accepted Oral and Poster Abstract Submissions, The Harrogate Convention Centre, Harrogate, England, 21–22 March 2019. British Medical Journal Publishing Group, 2019. http://dx.doi.org/10.1136/bmjspcare-2019-asp.134.

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Johnston, Robert T. y Sanford Fleeter. "Inlet Guide Vane Wakes, Including Rotor Effects". En ASME 1995 International Gas Turbine and Aeroengine Congress and Exposition. American Society of Mechanical Engineers, 1995. http://dx.doi.org/10.1115/95-gt-436.

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A series of fundamental experiments are directed at the acquisition and analysis of data defining forcing functions generated by an inlet guide vane (IGV) row, including interactions with the downstream rotor, for application to turbomachine forced response design systems. The research fan facility is comprised of an IGV row upstream of a rotor. IGV-rotor axial spacing is variable, with the IGV row able to be indexed circumferentially, thereby allowing measurements to be made across several IGV wakes. With an IGV relative Mach number of 0.29, measurements include the IGV wake pressure and velocity fields for three IGV-rotor axial spacings. The decay characteristics of the IGV wakes are compared to the Majjigi and Gliebe empirical correlations. After Fourier decomposition, a vortical-potential gust splitting analysis is implemented to determine the vortical and potential harmonic wake gust forcing functions both upstream and downstream of the rotor. Higher harmonics of the vortical gust component of the IGV wakes are found to decay at a uniform rate due to viscous diffusion.

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Roetman, E. L. "Boundary Value Problems for Anisotropic Elastic Waves". En REVIEW OF PROGRESS IN QUANTITATIVE NONDESTRUCTIVE EVALUATION. AIP, 2007. http://dx.doi.org/10.1063/1.2718084.

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Rigby, M. J., A. B. Johnson y M. L. G. Oldfield. "Gas Turbine Rotor Blade Film Cooling With and Without Simulated NGV Shock Waves and Wakes". En ASME 1990 International Gas Turbine and Aeroengine Congress and Exposition. American Society of Mechanical Engineers, 1990. http://dx.doi.org/10.1115/90-gt-078.

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Detailed heat transfer measurements have been made around a film-cooled transonic gas turbine rotor blade in the Oxford Isentropic Light Piston Tunnel. Film cooling behaviour for four film cooling configurations has been analysed for a range of blowing rates both without and with simulated nozzle guide vane (NGV) shock wave and wake passing. The superposition model of film cooling has been employed in analysis of time-mean heat transfer data, while time resolved unsteady heat transfer measurements have been analysed to determine interaction between film-cooling and unsteady shock wave and wake passing. It is found that there is a significant change of film-cooling behaviour on the suction surface when simulated NGV unsteady effects are introduced.

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Chen, Daogen, Jianhui Zhang, Bingxin Cao y Jun Huang. "Valve designing and experiment of the single conical shell valve piezoelectric pump". En 2013 Symposium on Piezoelectricity, Acoustic Waves, and Device Applications (SPAWDA). IEEE, 2013. http://dx.doi.org/10.1109/spawda.2013.6841076.

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Norton, Kellie y F. J. Moody. "A Simple Predictive Method of Steam Pipe Forces From Stop Valve Closure". En ASME/JSME 2004 Pressure Vessels and Piping Conference. ASMEDC, 2004. http://dx.doi.org/10.1115/pvp2004-3029.

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Piping systems that are subject to a fast closing valve are susceptible to large steamhammer forces. The steamhammer force is a result of high-speed pressure waves propagating through the pipe that create sizeable pressure gradients in the pipe. This paper introduces a simple predictive method of the pipe forces induced by the pressure gradients in a steam pipe resulting from stop valve closure. The case of instant valve closure is also examined for comparison. The assumptions in this analysis are that the stop valve closure is linear, the pressure losses from any bends in the pipe can be ignored, the downstream pressure is constant, the steam flow is at a constant pressure, and finally the pipe walls are rigid at a constant radius. The method introduces functions that are constant along diagonal lines on the time-space graph. The pressure and velocity along these lines can be computed from the initial conditions and boundary conditions. Finally, the pipe forces are calculated using the pressures in the targeted regions of the pipe.

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Jennions, I. K. y J. J. Adamczyk. "Evaluation of the Interaction Losses in a Transonic Turbine HP Rotor / LP Vane Configuration". En ASME 1995 International Gas Turbine and Aeroengine Congress and Exposition. American Society of Mechanical Engineers, 1995. http://dx.doi.org/10.1115/95-gt-299.

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Transonic turbine rotors produce shock waves, wakes, tip leakage flows and other secondary flows that the downstream stators have to ingest. While the physics of wake ingestion and shock interaction have been studied quite extensively, few ideas for reducing the aerodynamic interaction losses have been forthcoming. This paper aims to extend previously reported work performed by GE Aircraft Engines in this area. It reports on both average-passage (steady) and unsteady 3D numerical simulations of a candidate design to shed light on the interaction loss mechanisms and evaluate the design. The results from these simulations are first shown against test data for a Baseline configuration to engender confidence in the numerical approach. Simulations with the proposed newly designed rotor are then performed to show the trade-offs that are being made in such designs. The new rotor does improve the overall efficiency of the group and physical explanations are presented based on examining entropy production.

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Wang, Weibin, Zhanjun Feng, Choumin Zhao, Keyi Yuan, Zandong Han y Yifang Chen. "Excitation of Guided Waves in Oil Storage Tank Floor and Vertical Wall by Edge- and Wall-Mounted Transducers". En 2010 8th International Pipeline Conference. ASMEDC, 2010. http://dx.doi.org/10.1115/ipc2010-31063.

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Oil storage tanks are crucial components in the petrochemical industry for transportation and storage. Corrosion of the tank floor and vertical walls is one of the most important safety concerns. In-situ inspection of the tank floor and walls with ultrasonic guided wave technique by edge- and wall-mounted transducers is still an active research area nowadays. A great deal of research has been conducted in detecting the defect of plate-like structures using Lamb waves. This application has been motivated by the fact that the Lamb wave velocity is the function of frequency and structural geometry (thickness), also the Lamb waves can propagate with low attenuation for long distance in plate structure. However, the complexity due to the existence of multiple Lamb wave modes weakens its applicability. Lamb waves are typically excited by transducers mounted on the surface of the inspected plates. Higher order modes are generated if the frequency-thickness product exceeds a certain threshold value that is dependent on the material of the plates. Low frequency guided waves can reduce this complication as only a small number of wave modes are generated. So operation with low frequency guided waves is usually recommended, but it encounters a problem that the resolution gets degraded hence small defects (compared to the wavelength) are difficult to detect. Our investigation considers the generation of guided waves in tank floor and vertical wall by edge excitation and wall-mounted excitation, respectively. Only when there is no access to the edge of the vertical wall, the wall-mounted excitation (surface excitation) is used. When the frequency-thickness product is small Lamb waves are generated, otherwise, longitudinal waves are generated. We investigate the intermediate frequency-thickness products where a pulse train of semi-longitudinal waves is excited. The pulse train is comprised of a leading pulse and some railing pulses, which have been predicted by the acoustic theory. The transition from Lamb wave to semi-longitudinal wave is investigated. In addition, energy transport from leading pulse to trailing pulses and the interaction of these trailing pulses with defects are studied. The results revealed that the semi-longitudinal wave is a viable option for tank floor and wall defect inspection.

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Lai, Jianqiang, Yanyu Wei, Xiong Xu, Yang Liu, Fei Shen, Minzhi Huang, Tao Tang, Yubin Gong y Changyan Yang. "A 140 GHz staggered double vane backward wave oscillator". En 2012 5th Global Symposium on Millimeter Waves (GSMM 2012). IEEE, 2012. http://dx.doi.org/10.1109/gsmm.2012.6314063.

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Krogstad, Harald E., Jingdong Liu, Herve´ Socquet-Juglard, Kristian B. Dysthe y Karsten Trulsen. "Spatial Extreme Value Analysis of Nonlinear Simulations of Random Surface Waves". En ASME 2004 23rd International Conference on Offshore Mechanics and Arctic Engineering. ASMEDC, 2004. http://dx.doi.org/10.1115/omae2004-51336.

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The paper first recalls the Slepian Model Representation and a theorem of V. I. Piterbarg as generic tools for analyzing the spatial characteristic of ocean waves. We then consider numerical simulations of random surface gravity waves carried out in space and time by means of the modified nonlinear Schro¨dinger equation. It is shown that the extreme waves in the simulations are steeper and more asymmetric than predicted by the Gaussian theory. Moreover, the reconstructed wave fields shows extreme crest heights well in excess of what is expected from the Gaussian theory.

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Informes sobre el tema "Vale of (Wales)"

Jäger, Simon, Benjamin Schoefer, Samuel Young y Josef Zweimüller. Wages and the Value of Nonemployment. Cambridge, MA: National Bureau of Economic Research, noviembre de 2018. http://dx.doi.org/10.3386/w25230.

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Lepage, R., C. Schumacher y A. Lukachko. Moisture Management for High R-Value Walls. Office of Scientific and Technical Information (OSTI), noviembre de 2013. http://dx.doi.org/10.2172/1111207.

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Lepage, R., C. Schumacher y A. Lukachko. Moisture Management for High R-Value Walls. Office of Scientific and Technical Information (OSTI), noviembre de 2013. http://dx.doi.org/10.2172/1220904.

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Arena, Lois B. Construction Guidelines for High R-Value Walls without Exterior Rigid Insulation. Office of Scientific and Technical Information (OSTI), julio de 2016. http://dx.doi.org/10.2172/1324032.

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Maestas, Nicole, Kathleen Mullen, David Powell, Till von Wachter y Jeffrey Wenger. The Value of Working Conditions in the United States and Implications for the Structure of Wages. Cambridge, MA: National Bureau of Economic Research, octubre de 2018. http://dx.doi.org/10.3386/w25204.

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O’Brien, Tom, Deanna Matsumoto, Diana Sanchez, Caitlin Mace, Elizabeth Warren, Eleni Hala y Tyler Reeb. Southern California Regional Workforce Development Needs Assessment for the Transportation and Supply Chain Industry Sectors. Mineta Transportation Institute, octubre de 2020. http://dx.doi.org/10.31979/mti.2020.1921.

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COVID-19 brought the public’s attention to the critical value of transportation and supply chain workers as lifelines to access food and other supplies. This report examines essential job skills required of the middle-skill workforce (workers with more than a high school degree, but less than a four-year college degree). Many of these middle-skill transportation and supply chain jobs are what the Federal Reserve Bank defines as “opportunity occupations” -- jobs that pay above median wages and can be accessible to those without a four-year college degree. This report lays out the complex landscape of selected technological disruptions of the supply chain to understand the new workforce needs of these middle-skill workers, followed by competencies identified by industry. With workplace social distancing policies, logistics organizations now rely heavily on data management and analysis for their operations. All rungs of employees, including warehouse workers and truck drivers, require digital skills to use mobile devices, sensors, and dashboards, among other applications. Workforce training requires a focus on data, problem solving, connectivity, and collaboration. Industry partners identified key workforce competencies required in digital literacy, data management, front/back office jobs, and in operations and maintenance. Education and training providers identified strategies to effectively develop workforce development programs. This report concludes with an exploration of the role of Institutes of Higher Education in delivering effective workforce education and training programs that reimagine how to frame programs to be customizable, easily accessible, and relevant.

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Government Savings Bank of New South Wales - Moss Vale - Signature Register - Payments without Notice - 1918-1932. Reserve Bank of Australia, marzo de 2021. http://dx.doi.org/10.47688/rba_archives_2006/22676.

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