1,338 research outputs found
Going Beyond Counting First Authors in Author Co-citation Analysis
No full textThe 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
ONDE ESTÃO OS EGRESSOS DO CURSO DE ADMINISTRAÇÃO DA UFSC?
No full textO Estudo de Caso aborda a atuação profissional de egressos, modalidade presencial, do Curso de Administração (2011-2014), da Universidade Federal de Santa Catarina (CAD-UFSC). Da população de 548 bacharéis da lista de Graduados deste Survey, obteve-se a Amostra de 146 investigados, num Intervalo de Confiança de 95% e Erro Amostral de 7% (RENDER, STAIR JR.; HANNA, 2010). O questionário foi estruturado com perguntas fechadas Estilo Likert (HAIR JR., ANDERSON; TATHAM; BLACK, 2005), fixado no Google Docs e enviado por e-mail a todos egressos do período. A coleta foi feita em maio e junho de 2015, o tratamento dos dados foi quantitativo e usou-se o SPSS® na sua operacionalização. A pesquisa apontou que predominam os egressos na faixa etária de 26 a 30 anos (50,7%), sendo 50,7% do sexo feminino, a maioria natural do Estado de Santa Catarina, cursaram o ensino médio em escola privada e que cerca de 30% fez intercâmbio no exterior durante a graduação. Eles trabalham em empresas de médio porte e a faixa salarial predominante oscila de 3 a 6 salários mínimos, mas a maioria deles fez ou está cursando pós-graduação. Realçam à relevância em terem se graduado na UFSC, pois lhes permitiu reconhecimento pessoal e profissional, reforçando as avaliações do CAD-UFSC como um dos cursos 5 estrelas pelo MEC-Brasil
Book review: the blame game
No full textAuthor reviews: Steve Tatham, "losing Arab hearts and minds: the coalition, al-Jazeera and Muslim public opinion
Towards using seismic anisotropy to interpret ductile deformation in mafic lower crust
No full textThe lower crust forms an important geodynamic control in continental tectonics and the communication and coupling of kinematics between surface and deep-Earth processes. An understanding of the relationship between seismic properties, finite strain and fabric orientation thus provides a useful tool in the remote sensing and
interpretation of deformation in the lower crust.
This thesis outlines a work-flow model by which the seismic properties of a single and representative lower crustal lithology can be calculated and calibrated against
finite strain from petrofabric development across a strain gradient. The work-flow model constitutes a multi-disciplinary approach, incorporating field mapping and
sample collection, experimental petrofabric determination, and seismic modelling.
A review of compositional estimates of the deep crust, including xenoliths, exposed sections and estimates from wide-angle seismic profiles, indicates the importance
of mafic lithologies.
The Laxfordian-age high-grade shear zone at Upper Badcall, NW Scotland, exhibits a strain gradient in a deformed doleritic Scourie dyke (Lewisian complex) that intersects the zone at a high angle. From an analysis of field data from detailed mapping, the shear zone is shown to be characterised by generally simple shear, but where the tectonic movement direction varies transversely across the shear zone. Calculation of the strain profile across the deformation zone gives shear strains, y up to 57, but with y < 15 being perhaps more realistic. Cumulative displacements
total ~1000m left-laterally, and ~600m vertical displacement, north-side up. Nine samples were collected across the shear zone in the mafic dyke, representing a
strain gradient from undeformed protolith to the highest recorded stains.
The sample suite is characterised as a hornblende-plagioclase-quartz aggregate that develops macroscopic planar and linear fabrics with strain, from an essentially
isotropic protolith. Quantification of the aggregate lattice preferred orientation (LPO) using electron backscatter diffraction (EBSD) showed the dominance of
fabric development in the hornblende phase, with (100) poles clustering forming normal to the foliation plane and [001] axes parallel to the tectonic X direction.
Plagioclase and quartz retained random fabrics from the wall-rock protolith with increasing finite strain. The hornblende LPO fabric, described by the texture index, J, shows a positive logarithmic relationship with strain, where LPO intensity saturated by y ~10.
The strain-calibrated quantitative petrofabric description of each sample is used to calculate their aggregate elasticity tensors (Cij) via a Voigt-Reuss-Bill average,
and from which seismic properties are derived using Christoffel's equation. Hence, a framework of petrofabric- and strain-calibrated seismic properties is described
for a strain gradient in a representative high-grade mafic lithology. P-wave anisotropies up to ~10% are-recorded in the most deformed samples with Vsmax typically between 6.42-6.63kms/-1. S-wave anisotropies record up to 7.23% AV,
in the most deformed samples, with Vpmax ranging between 3.62-3.75kms-1 for all samples. The relationship between petrofabric-derived seismic anisotropy and finite strain across the sample suite show a positive relationship, approximated by a logarithmic function, whereby P- and S-wave anisotropy exhibit a steep positive gradient with strain up to y~10.
The sample-wise framework of petrofabric- and strain-calibrated seismic properties is interpolated to estimate the continuum relationship between seismic properties,
finite strain and petrofabric orientation. In a move to illustrate the application of results in seismic and structural modelling, case study models of crustal deformation are presented for the eastern Basin and Range province, the North Sea rift, and Tibet. Models are promising in their ability to differentiate between regions of lower crust characterised by a uniform mafic composition but different finite strain state and/or petrofabric geometry, although multiple seismic survey methods may
be needed to fully interpret results in terms of strain and fabric orientation.
In summary, a multidisciplinary approach combining field mapping and sampling, petrofabric characterisation with EBSD, and seismic modelling provides an efficient and reproducible work-flow for the determination of petrofabric-derived strain-calibrated seismic properties of lower crustal materials
Economic Consequences of Unfunded Vested Pension Benefits
No full textThis paper examines the relationship between unfunded vested pension liabilities and the market value of a firm's shares. This relationship has important implications for the mechanism by which private pensions influence aggregate savings. Attention is paid to modeling the institutional determinants of this relation implied by ERISA legislation. These considerations require a nonlinear regression model with very special properties which are developed and discussed. Estimation results suggest that ERISA has had an important effect on the relation between unfunded benefits and firm value that previous investigations have neglected.
The National Institute for Health Research Critical Care Research Priority Setting Survey 2018
No full textIntroductionDefining research priorities in intensive care is key todetermining appropriate allocation of funding. Several topics were identified from the recent James Lind Alliance (JLA) priority setting exerciseconducted with the Intensive Care Society(1). The JLA process included significant (and vital) patient/public contribution, but as a result may have failedto identify potential early-stage translational research topics, which are more likely identified by medical/academic members of relevant specialist intensive care groups. Theobjectiveof the present project was to complement the JLA project by generating an updated list of research prioritiesby facilitatingacademic research input.MethodAsurveywas conducted by the National Institute forHealth Research(NIHR)to identify the key research priorities from Intensive Care clinicians, including allied health professionals and academics, along with any evolving themes arising from translational research. Feasibility of all identified topics were then discussedand allocated to themesby ajoint clinical academics/NIHR focus group. ResultsThe survey was completed by 94 intensive care clinicians(including subspecialists),academicsand allied healthprofessions. In total203researchquestionswere identified, with the top fivethemesfocusing on:appropriate case selection (e.g.who and when to treat; 24%), ventilation(7%), sepsis (6%), delirium (5%) and rehabilitation (5%). DiscussionUtilising a methodology distinct from thatemployed by the JLAprocess, from a broad spectrum of intensive care clinicians/scientists,enabled identification of a variety of priority research areas. These topics cannowinform not only the investigator-led researchagenda, but will alsobe considered in due course by the NIHR for potential future funding calls
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Optimal Linear Spline Approximation of Digitized Models
No full textIn this paper we present a new technique for surface reconstruction of digitized models in three dimensions. Concerning this problem, we are given a data set in three-dimensional space, represented as a set of points without connectivity information, and the goal is to find, for a fixed number of vertices, a set of approxiamating triangles whic minimize the error measured by the displacement from the given points. Our method creates near-optimal linear spline approximations, using an iterative optimization scheme based on simulated annealing. The algorithm adapts the mesh to the data set and moves the triangles to enhance feature lines. At the end, we can use the approach to create a hierarchy of different resolutions for the model
Etchings of Ancient Ornamental Architecture (1800) e Designs for Cottages (1805)
No full textCharles Heathcote Tatham and Joseph Gandy played important roles in early Nineteenth century British artistic world: Tatham for his contribution to the development of applied arts, Gandy for being John Soane’s projects graphic executor, as well as a truly eclectic artist, hard to classify in traditional canons. Apparently disconnected and distant from each other, the two architects shared the experience of the trip to Rome, which took place simultaneously in the years 1794-1796, but if they boarded the same ship, they also moved in two diametrically opposite directions once arrived in Rome. The letters sent home by the two young artists confirm this, telling two completely dissimilar experiences of the same Rome and the Ancient. After returning home, between 1800 and 1806, both architects published some illustrated publications strongly linked to the recent trip. In both cases they are architectural model albums: two series of ’didactic’ engravings by Tatham, and two pattern books for rural buildings by Gandy. They are two extremely different editorial cases, but both based on the ’re-use’ of the Italian experiences of the authors and their personal interpretation of their time’s cult of antiquity
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