Keep me from sinking down: a thematic catalog of the violin works by Samuel Coleridge-Taylor

This study aims to analyze and catalog all the violin works of Samuel Coleridge-Taylor, a composer from the late 1800s who was prominent during his time, but has been scarcely remembered. This catalog provides important information about his works for the violin, and attempts to increase the dissemination of Coleridge-Taylor's music and allow it to be increasingly performed, as violinists incorporate his pieces into their repertoire. An overview of Coleridge-Taylor's historical importance, including discussions about the African influences in his compositions as well as his contributions to Pan-Africanism, is provided in Chapter II. The American virtuoso violinist Maud Powell is also discussed in Chapter III, given her significant impact on the composer’s career. Previous research indicates that Coleridge-Taylor's primary instrument was the violin and that he wrote a considerable amount of pieces for the instrument. The most complete catalog of Coleridge-Taylor's works up to this point was written by Dr. Dominique-René de Lerma, described in Chapter IV; however, not all of his violin works are present. The methodology for the groundwork of this study, which reviews and updates the Lerma's catalog, is given in Chapter V. The Thematic Catalog of Violin Works is presented in Chapter VI, with important information to help violinists incorporate these pieces into their repertoire, followed by the complete list of violin works by difficulty level, in Chapter VII. More pertinent materials are given in the four Appendices, such as relevant correspondences and compositions' prefaces. The findings of this study show that while the majority of Coleridge-Taylor's works for the violin are at an intermediate level, a small number are for beginners, and some are truly difficult level masterpieces. As shown in the Conclusion, after careful analysis, it can be inferred that Coleridge-Taylor’s violin works deserve to be known, incorporated into the repertoire of modern violinists, and performed more frequently

Application of the x-ray measurement model to image processing of x-ray radiographs

A computational model has been developed at which simulates the film response to the interaction of x-rays with a sample[1,2]. By using a CAD model as a virtual part, film densities of the radiograph are predicted. The number of photons which reach the film is based on the thickness of the part, part geometry, and the material absorption coefficient. Also taken into consideration are the x-ray beam characteristics, film properties, and the experimental configuration. The model generated images can vary in size and resolution, depending on the user chosen parameters. Noise is calculated using a Gaussian noise distribution and adjusted for the film type. The result of this simulation is a two-dimensional numerically generated digital image, which represents a radiograph of the part. This result can be used to analyze the flaws in an actual radiograph with the same set-up and exposure parameters

DOMINATION AND EXPLOITATION IN THE WORLD ECONOMY IN THE 1990s

Summary This speculative article explores the economic and ethical aspects of inequality in the new post?cold war world and the relations of domination required to reproduce them in the context of a more general theory of exploitation. Some of the factors affecting international inequality and economic power in the post?war period are described and analysed. These are examined from the perspective of income distribution; poverty; growth and convergence; natural resources; human resources and productive knowledge; institutions; accumulation, distribution and exploitation; markets; status exploitation and gender. The conclusion is that the new world order lacks both moral legitimacy and democratic institutions to govern the world economy. In this context, the evolving relations of domination and exploitation which reproduce the levels of inequality described may end up producing a new world disorder. Resumé Le dominance et l'exploitation dans l'économie mondiale au cours des années 1990 L'auteur explore spéculativement, dans le cadre d'une théorie plus générale de l'exploitation, les aspects économiques et moraux de l'inégalité dans le nouveau monde d'après la Guerre froide, ainsi que les rapports dominateurs impliqués dans la replication de cette inégalité. Certains des facteurs qui affectent l'inégalité internationale et le pouvoir économique dans la période d'après?guerre sont décrits et analysés dans l'article. Ces facteurs sont examinés due point de vue de la distribution des revenus; de la pauvreté; de la croissance et de la convergence; des ressources naturelles; des ressources humaines et des connaissances productives; des institutions; de l'accumulation, de la distribution et de l'exploitation; des marchés; de l'exploitation du statut et du genre. La conclusion est que sans légitimité morale, le libéralisme économique dépourvu de diversité institutionnelle ou d'institutions démocratiques capables de gouverner l'économie mondiale, l'évolution des relations de domination et d'exploitation qui reproduisent les niveaux d'inégalité décrits dans l'article pourraient, à la longue, produire un nouveau désordre d'envergure mondiale. Resumen Dominación y explotación en la economía mundial en la década del 90 Este artículo especulativo explora los aspectos económicos y éticos de la desigualdad mundial en la nueva etapa pos?guerra fría, y las relaciones de dominación requeridas para reproducirlos en el contexto de una teoría de explotación más general. Se describen y analizan algunos de los factores que afectan a la desigualdad internacional, y al poder económico en esta nueva era. Estos factores son examinados desde la perspectivas de distribución de ingresos; pobreza; crecimiento y convergencia; recursos nacionales; recursos humanos y conocimiento productivo; instituciones; acumulación, distribución y explotación; mercados; explotación de categoría y género. La conclusión es que, sin una legitimidad moral, un liberalismo económico sin diversidad institucional o instituciones democráticas a cargo de la economía mundial, las relaciones de dominación y explotación que reproducen los niveles de desigualdad descriptos podrían producir eventualmente un nuevo desorden mundial

Entrepreneurial intentions and entrepreneurship education to University students in Portugal

[EN] This article analyzes entrepreneurial intentions and motivations that encourage university students of Tourism to create their own company. Methodology is based on an empirical study, using a questionnaire adapted from a model of Veciana and Urbano (Actitudes de los estudiantes universitarios hacia la creación de empresas: un estudio empírico comparativo entre Catalunya y Puerto Rico. El emprendedor innovador y la creación de empresas de I + D + I, University of Valencia, pp 35 58, 2004), including the desirability and viability concepts. One hundred and sixty students answered the questionnaire from a total study population of 243 official Tourism degree students of the Superior Institute of Accounting and Management of Porto. This research finds out that the university students have a very positive perception about the desire to create their own company; a 90 % of students express their desire to do it, and 83.5 % express their intention. Moreover, a 57.5 % think that within actual crisis it is more difficult to do than before it. This research lets us get an in-depth study of a student of Tourism degree, finding out his entrepreneurial attitudes. It can be the first step to wake up and encourage students interest for starting up their own business.Del Rio-Rama, MDLC.; Peris-Ortiz, M.; Álvarez García, J.; Rueda Armengot, C. (2016). Entrepreneurial intentions and entrepreneurship education to University students in Portugal. Technology, Innovation and Education. 2(7):1-11. doi:10.1186/s40660-016-0013-5S11127Ajzen I (1991) The theory of plannes behavior. Organ Behav Hum Decis Process 50:179–211Aponte M (2002) Factores condicionantes de la creación de empresas en Puerto Rico: un enfoque institucional. Doctoral dissertation, Autonomous University of BarcelonaAponte M, Urbano D, Veciana JM (2006) Actitudes hacia la creación de empresas: un estudio comparativo entre Catalunya y Puerto Rico. Centro de Investigaciones Comerciales e Iniciativas Académicas de la Facultad de Administración de Empresas. Forum Empresarial 11(2):52–75Bae TJ, Qian S, Miao C, Fiet JO (2014) The relationship between entrepreneurship education and entrepreneurial intentions: a meta-analytic review. Entrep Theory Pract 38(2):217–254Brice J (2004) The role of personality dimensions on the formation of entrepreneurial intentions. USASBE Small Business Advancement National Center. University of Central Arkansas, USACabana-Villca R, Cortes-Castillo I, Plaza-Pasten D, Castillo-Vergara M, Alvarez-Marin A (2013) Análisis de las capacidades emprendedoras potenciales y efectivas en alumnos de centros de educación superior. J Technol Manag Innov 8(1):65–75Davidsson P (1989) Continued entrepreneurship and small firm business. Stockholm School of Economics, StockholmDavidsson P (1995) Culture, structure and regional levels of entrepreneurship. Entrep Reg Dev 7(1):41–62De Jorge-Moreno J, Castillo LL, Triguero MS (2012) The effect of business and economics education programs on students’ entrepreneurial intention. Eur J Train Dev 36(4):409–425Díaz JC, Hernández RM, Barata ML (2007) Estudiantes universitarios y creación de empresas. Un análisis comparativo entre España y Portugal. In Ayala, J.C. (coord.) Conocimiento, innovación y emprendedores: camino al futuro. Grupo FEDRA, MadridDo Paço AMF, Ferreira JM, Raposo M, Rodrigues RG, Dinis A (2011) Behaviours and entrepreneurial intention: empirical findings about secondary students. J Int Entrep 9(1):20–38Dohse D, Walter SG (2010) The role of entrepreneurship education and regional context in forming entrepreneurial intentions (No. 2010, 18). Document de treball de l’IEBEuropean Commission (2006). 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Afr J Econ Manag Stud 3(2):258–277Gorman G, Hanlon D, King W (1997) Some research perspectives on entrepreneurship education and education for small business management: a ten-year literature review. Int Small Bus J 15(3):56–77Guerrero M, Rialp J, Urbano D (2008) The impact of desirability and feasibility on entrepreneurial intentions: a structural equation model. Int Entrep Manag J 4(1):35–50Haynie JM, Shepherd DA, McMullen JS (2009) An opportunity for me? The role of resources in opportunity evaluation decisions. J Manage Stud 46(3):337–361Hernangomez J, Martín N, Rodriguez AI, Saboia F (2005) El emprendedor nace o se hace? Un análisis de los determinantes del espíritu emprendedor. XVI Spanish-Portuguese Meeting of Scientic Management. Sevilla:33–44Hmieleski KM, Corbett AC (2006) Proclivity for improvisation as a predictor of entrepreneurial intentions. J Small Bus Manage 44(1):45–63Honjo Y (2004) Growth of new start-up firms: evidence from the Japanese manufacturing industry. Appl Econ Lett 11(1):21–32Hyde GC (1989) The relationship between policy and research. In Rosa, P.; Birley, S. Cannon, T. and O´Neill, K. The Role and Contribution of Small Business Research, Chap. 3:55–77, Institute ReportKolvereid L (1996) Prediction of employment status choice intentions. Entrep Theory Pract 21(1):47–57Kourilsky ML, Walstad WB (1998) Entrepreneurship and female youth: knowledge, attitude, gender differences, and educational practices. J Bus Ventur 13(1):77–88Krueger N, Brazeal D (1994) Entrepreneurial Potencial and Potencial Entrepreneurs. Entrep Theory Pract 18(3):91–104Krueger NF, Carsrud AL (1993) Entrepreneurial intentions: applying the theory of planned behaviour. Entrep Reg Dev 5(4):315–330Lanero A, Vázquez JL, Gutiérrez P, García MP (2011) The impact of entrepreneurship education in European universities: an intention-based approach analyzed in the Spanish area. Int Rev Public Nonprofit Marketin 8(2):111–130Miller BK, Bell JD, Palmer M, González A (2009) Predictors of entrepreneurial intentions: a quasi-experiment comparing students enrolled in introductory management and entrepreneurship classes. J Bus Entrep 21(2):39–62Neck HM, Zacharakis AL, Bygrave WD, Reynolds PD (2003) Global entrepreneurship monitor: 2002 executive report. Babson College, Babson, MANorth DC (1990) Institutions, Institutional Change and Economic Performance. Cambridge University Press, Cambridge (UK)North D (1993) Instituciones, cambio institucional y desempeño económico. Fondo de Cultura Económica, MéxicoNorth DC (2005) Understanding the Process of Economic Change. Academic Foundation. University Press, PrincentonGEM Portugal (2012) Estudo sobre o Empreendedorismo. Global Entrepreneruship Monitor (GEM). Instituto Universitário de Lisboa (ISCTEIUL) http://web.spi.pt/GEMportugal2012/files/GEM_PORTUGAL_2012.pdfRaposo M, do Paço A, Ferreira J (2008a) Entrepreneur’s profile: a taxonomy of attribu tes and motivations of university students. J Small Bus Enterp Dev 15(2):405–420Raposo MLB, Ferreira JJM, do Paço AMF, Rodrigues RJG (2008b) Propensity to firm creation: empirical research using structural equations. Int Entrep Manag J 4(4):485–504Robinson PB, Stimpson DV, Huefner JC, Hunt HK (1991) An attitude approach to the prediction of entrepreneurship. Entrep Theory Pract 15(4):13–31Samad Aghayi J (2008) Entrepreneurship organization. Public Administration Training Center Publications, TehranScherer RF, Adams JS, Carley S, Wiebe FA (1989) Role model performance effects on development of entrepreneurial career preference. Entrep Theory and Pract, spring:53–71Scherer RF, Brodzinski JD, Wiebe F (1991) Examining the relationship between personality and entrepreneurial career preference. 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The radius and mass of the close solar twin 18 Sco derived from asteroseismology and interferometry

The growing interest in solar twins is motivated by the possibility of comparing them directly to the Sun. To carry on this kind of analysis, we need to know their physical characteristics with precision. Our first objective is to use asteroseismology and interferometry on the brightest of them: 18 Sco. We observed the star during 12 nights with HARPS for seismology and used the PAVO beam-combiner at CHARA for interferometry. An average large frequency separation $134.4\pm0.3$ $\mu$Hz and angular and linear radiuses of $0.6759 \pm 0.0062$ mas and $1.010\pm0.009$ R$_{\odot}$ were estimated. We used these values to derive the mass of the star, $1.02\pm0.03$ M$_{\odot}$.Comment: 5 pages, 5 figure

Asteroseismology and Interferometry

Asteroseismology provides us with a unique opportunity to improve our understanding of stellar structure and evolution. Recent developments, including the first systematic studies of solar-like pulsators, have boosted the impact of this field of research within Astrophysics and have led to a significant increase in the size of the research community. In the present paper we start by reviewing the basic observational and theoretical properties of classical and solar-like pulsators and present results from some of the most recent and outstanding studies of these stars. We centre our review on those classes of pulsators for which interferometric studies are expected to provide a significant input. We discuss current limitations to asteroseismic studies, including difficulties in mode identification and in the accurate determination of global parameters of pulsating stars, and, after a brief review of those aspects of interferometry that are most relevant in this context, anticipate how interferometric observations may contribute to overcome these limitations. Moreover, we present results of recent pilot studies of pulsating stars involving both asteroseismic and interferometric constraints and look into the future, summarizing ongoing efforts concerning the development of future instruments and satellite missions which are expected to have an impact in this field of research.Comment: Version as published in The Astronomy and Astrophysics Review, Volume 14, Issue 3-4, pp. 217-36

Fifteen new risk loci for coronary artery disease highlight arterial-wall-specific mechanisms

Coronary artery disease (CAD) is a leading cause of morbidity and mortality worldwide. Although 58 genomic regions have been associated with CAD thus far, most of the heritability is unexplained, indicating that additional susceptibility loci await identification. An efficient discovery strategy may be larger-scale evaluation of promising associations suggested by genome-wide association studies (GWAS). Hence, we genotyped 56,309 participants using a targeted gene array derived from earlier GWAS results and performed meta-analysis of results with 194,427 participants previously genotyped, totaling 88,192 CAD cases and 162,544 controls. We identified 25 new SNP-CAD associations (P < 5 × 10(-8), in fixed-effects meta-analysis) from 15 genomic regions, including SNPs in or near genes involved in cellular adhesion, leukocyte migration and atherosclerosis (PECAM1, rs1867624), coagulation and inflammation (PROCR, rs867186 (p.Ser219Gly)) and vascular smooth muscle cell differentiation (LMOD1, rs2820315). Correlation of these regions with cell-type-specific gene expression and plasma protein levels sheds light on potential disease mechanisms

Bayesian Approach to Model CD137 Signaling in Human M.tuberculosis in vitro Responses

Abstract Immune responses are qualitatively and quantitatively influenced by a complex network of receptor-ligand interactions. Among them, the CD137:CD137L pathway is known to modulate innate and adaptive human responses against Mycobacterium tuberculosis. However, the underlying mechanisms of this regulation remain unclear. In this work, we developed a Bayesian Computational Model (BCM) of in vitro CD137 signaling, devised to fit previously gathered experimental data. The BCM is fed with the data and the prior distribution of the model parameters and it returns theirposterior distribution and the model evidence, which allows comparing alternative signaling mechanisms. The BCM uses a coupled system of non-linear differential equations to describe the dynamics of Antigen Presenting Cells, Natural Killer and T Cells together with the interpheron (IFN)-c and tumor necrosis factor (TNF)-a levels in the media culture. Fast and complete mixing of the media is assumed. The prior distribution of the parameters that describe the dynamics of the immunological response was obtained from the literature and theoretical considerations Our BCM applies successively the Levenberg-Marquardt algorithm to find the maximum a posteriori likelihood (MAP); the Metropolis Markov Chain Monte Carlo method to approximate the posterior distribution of the parameters and Thermodynamic Integration to calculate the evidence of alternative hypothesis. Bayes factors provided decisive evidence favoring direct CD137 signaling on T cells. Moreover, the posterior distribution of the parameters that describe the CD137 signaling showed that the regulation of IFNc levels is based more on T cells survival than on direct induction. Furthermore, the mechanisms that account for the effect of CD137 signaling on TNF-a production were based on a decrease of TNF-a production by APC and, perhaps, on the increase in APC apoptosis. BCM proved to be a useful tool to gain insight on the mechanisms of CD137 signaling during human response against Mycobacterium tuberculosis.Fil: Darío A Fernández Do Porto. UNIV.DE BUENOS AIRES. FAC.DE CS.EXACTAS Y NATURALES. UNIV.DE BUENOS AIRES. FAC.DE CS.EXACTAS Y NATURALES. INST QUIM FISICA D/L/MATERIALES MED AMB Y ENERG.Fil: Jerónimo Auzmendi. UNIV.DE BUENOS AIRES. FAC.DE CS.EXACTAS Y NATURALES. INST QUIM FISICA D/L/MATERIALES MED AMB Y ENERG.Fil: Delfina Peña. UNIV.DE BUENOS AIRES. FAC.DE CS.EXACTAS Y NATURALES. CONSEJO NAC.DE INVEST.CIENTIF.Y TECNICAS. OFICINA DE COORDINACION ADMINISTRATIVA CIUDAD UNIVERSITARIA. INSTITUTO DE QUIMICA BIOLOGICA DE LA FACULTAD DE CS. EXACTAS Y NATURALES. UNIV.DE BUENOS AIRES. FAC.DE CS.EXACTAS Y NATURALES. DTO.DE QUIMICA BIOLOGICA.Fil: Veronica E Garcia. CONSEJO NAC.DE INVEST.CIENTIF.Y TECNICAS. OFICINA DE COORDINACION ADMINISTRATIVA CIUDAD UNIVERSITARIA. INSTITUTO DE QUIMICA BIOLOGICA DE LA FACULTAD DE CS. EXACTAS Y NATURALES.Fil: Luciano Moffatt. UNIV.DE BUENOS AIRES. FAC.DE CS.EXACTAS Y NATURALES. INST QUIM FISICA D/L/MATERIALES MED AMB Y ENERG

Beyond trees: Mapping total aboveground biomass density in the Brazilian savanna using high-density UAV-lidar data

Tropical savanna ecosystems play a major role in the seasonality of the global carbon cycle. However, their ability to store and sequester carbon is uncertain due to combined and intermingling effects of anthropogenic activities and climate change, which impact wildfire regimes and vegetation dynamics. Accurate measurements of tropical savanna vegetation aboveground biomass (AGB) over broad spatial scales are crucial to achieve effective carbon emission mitigation strategies. UAV-lidar is a new remote sensing technology that can enable rapid 3-D mapping of structure and related AGB in tropical savanna ecosystems. This study aimed to assess the capability of high-density UAV-lidar to estimate and map total (tree, shrubs, and surface layers) aboveground biomass density (AGBt) in the Brazilian Savanna (Cerrado). Five ordinary least square regression models esti-mating AGBt were adjusted using 50 field sample plots (30 m × 30 m). The best model was selected under Akaike Information Criterion, adjusted coefficient of determination (adj.R2), absolute and relative root mean square error (RMSE), and used to map AGBt from UAV-lidar data collected over 1,854 ha spanning the three major vegetation formations (forest, savanna, and grassland) in Cerrado. The model using vegetation height and cover was the most effective, with an overall model adj-R2 of 0.79 and a leave-one-out cross-validated RMSE of 19.11 Mg/ha (33.40%). The uncertainty and errors of our estimations were assessed for each vegetation formation separately, resulting in RMSEs of 27.08 Mg/ha (25.99%) for forests, 17.76 Mg/ha (43.96%) for savannas, and 7.72 Mg/ha (44.92%) for grasslands. These results prove the feasibility and potential of the UAV-lidar technology in Cerrado but also emphasize the need for further developing the estimation of biomass in grasslands, of high importance in the characterization of the global carbon balance and for supporting integrated fire management activities in tropical savanna ecosystems. Our results serve as a benchmark for future studies aiming to generate accurate biomass maps and provide baseline data for efficient management of fire and predicted climate change impacts on tropical savanna ecosystems