845 resultados para historical comparative research


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This dissertation develops and tests a comparative effectiveness methodology utilizing a novel approach to the application of Data Envelopment Analysis (DEA) in health studies. The concept of performance tiers (PerT) is introduced as terminology to express a relative risk class for individuals within a peer group and the PerT calculation is implemented with operations research (DEA) and spatial algorithms. The analysis results in the discrimination of the individual data observations into a relative risk classification by the DEA-PerT methodology. The performance of two distance measures, kNN (k-nearest neighbor) and Mahalanobis, was subsequently tested to classify new entrants into the appropriate tier. The methods were applied to subject data for the 14 year old cohort in the Project HeartBeat! study.^ The concepts presented herein represent a paradigm shift in the potential for public health applications to identify and respond to individual health status. The resultant classification scheme provides descriptive, and potentially prescriptive, guidance to assess and implement treatments and strategies to improve the delivery and performance of health systems. ^

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Since the middle of the twentieth century criticism towards quantitative research tools in social sciences has gradually led to attempts to find a new methodology, called 'qualitative research'. At the same time, qualitative research has called for a reconsideration of the usefulness of many of the beneficial tools and methodologies that were discarded during the move to research based on the employment of quantitative research tools. The purpose of this paper is to discuss the essential elements of the qualitative research approach, and then argue for the possibility of introducing the old-established methodology of historical science into qualitative research, in order to raise the accuracy of the qualitative data.

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At the present time almost all map libraries on the Internet are image collections generated by the digitization of early maps. This type of graphics files provides researchers with the possibility of accessing and visualizing historical cartographic information keeping in mind that this information has a degree of quality that depends upon elements such as the accuracy of the digitization process and proprietary constraints (e.g. visualization, resolution downloading options, copyright, use constraints). In most cases, access to these map libraries is useful only as a first approach and it is not possible to use those maps for scientific work due to the sparse tools available to measure, match, analyze and/or combine those resources with different kinds of cartography. This paper presents a method to enrich virtual map rooms and provide historians and other professional with a tool that let them to make the most of libraries in the digital era.

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According to the importance of rehabilitation and recovery of Architectural Heritage in the live of people, this paper is aimed to strengthen the traditional methods of stone vaults calculation taking advantage of the technological characteristics of the powerful program ANSYS Workbench. As an example of this, it could find out the possible pathologies that could arise during the construction history of the building. To limit this research, the upper vault of the main chapel of the Santiago parish church in Orihuela -Alicante- is selected as a reference which is a Jeronimo Quijano´s important building work in the XVI century in the Renaissance. Moreover, it is an innovative stone masonry vault that consists of 8 double intercrossed arches with each other and braced by severies. During the seventeenth century there was a lantern in the central cap and it is unknown why it was removed. Its construction could justify the original constructive solution with intercrossed arches that freed the center to create a more enlightened and comfortable presbytery. By similarity with other Quijano’s works, it is considered a small lantern drilling the central spherical cap. It is proposed to carry out a comparative study of it with different architectural solutions from the same period and based on several common parameters such as: a vault of square plant with spherical surround, intercrossed arches, a possible lantern, the dimension of the permitted space, similar states of loads and compact limestone masonry. The three solutions are mainly differentiated by their size and the type of lantern and its comparison lets us know which one is the most resistant and stable. The other two building works maintain some connection with the Quijano's professional scope. It has selected the particular case of the Communion chapel of the Basilica in Elche (a large prismatic lantern with a large cylindrical drum that starts from the own arches and an upper hemispherical dome), for its conservation, its proximity to Orihuela and its implementation during the century XVIII. Finally, a significant Dome Spanish Renaissance complete the selection: a cross vault of the Benavides Chapel of the Saint Francisco Convent in Baeza - Jaén-, designed by Andres of Vandelvira in the sixteenth century (a large hemispherical dome that starts from the own arcs). To simplify the calculation and standardize the work that have to be contrasted, all of them were considered with some similar characteristics: 30 cm constant thickness, the intercrossed arches were specifically analyzed and had identical loads, Young's modulus and Poisson's ratio. Regarding the calculation solutions, in general terms, the compressive stresses predominate, influencing on it the joint collaboration of the filling material on the vault, the vault itself, the thick side walls, the buttresses and the top cover weight . In addition, the three solutions are suitable, being the Orihuela one the safest and the Baeza one the riskiest for its large dimensions. Thus, the idea of intercrossed arches with suitable thickness would allow carry out the heaviest lantern and this would confirm it as a Renaissance architectural typology built in stone.

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Introduction. “Convention” is an ambiguous term, not only for lawyers, containing a wide variety of different meanings. Even when restricted to denote an assembly it may be used for all sorts of gatherings. In the context of constitutional law a convention is a very specific instrument, and the question is to what extent it is actually known in European constitutional law and whether the “Convention on the Future of Europe” as called forth by the Declaration of Laeken conforms to what is understood in constitutional law by “convention”.1 Or did the Laeken Council pick up a term without any foundation in European constitutional law, rarely practiced and even less understood, the only precedents of which are supposed to be the American Federal Convention in Philadelphia in 1787 and the convention that drafted the European Charter on Fundamental Rights, as can be read time and again? 2 As it is the privilege of the constitutional historian to make aware the evolution of legal institutions and to analyze their conferred meaning so that they will be available in political discourse, I shall examine the meaning of “convention” in constitutional history and comparative constitutional law in a first part, while a second part will place the Convention on the Future of the European Union according to its composition and commission into the context of constitutional conventions as understood in law.

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The EU democratization policies have not achieved the expected results in Eastern Partnership (EaP) countries. On the contrary, they have led to the outbreak of the most important crisis in Europe after the end of the cold war. A new vision of cooperation in the field of democracy is necessary in the East, as long as even Georgia and Moldova, countries considered to be the most advanced among the EaP states, have not registered essential progress in the democratization of their societies. Assuming that democratization, as part of EU’s neighbourhood policies, can be considered a threat to Russia and hence a ‘destabilizing factor’ for the EU partners, this thesis tried to understand what changes can be made to EU policies and to what extent cooperation between EU and Russia is possible in the process developing democratization policies in Georgia and Moldova. While arguing for the revitalization of the instruments used for the implementation of the democratization policies, this thesis finds that cooperation between the EU and Russia in the field of democracy is excluded as long as the two geo-political actors have different values and different views on the notion of democracy. The most likely cooperation that might occur between EU and Russia is the establishment of a Common Economic Space ‘from Lisbon to Vladivostok’. Even though such a scenario would have the potential to reduce confrontation between the two actors in the common neighbourhood, this cooperation would, however, have a negative impact on the on-going democratic reforms in Georgia and Moldova.

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Part of the illustrative material is folded, part colored.

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"Prepared under a grant from the National Historical Publications and Records Commission, Grant 87-47"--t.p. verso.