Perceptually Motivated Shape Context Which Uses Shape Interiors

In this paper, we identify some of the limitations of current-day shape matching techniques. We provide examples of how contour-based shape matching techniques cannot provide a good match for certain visually similar shapes. To overcome this limitation, we propose a perceptually motivated variant of the well-known shape context descriptor. We identify that the interior properties of the shape play an important role in object recognition and develop a descriptor that captures these interior properties. We show that our method can easily be augmented with any other shape matching algorithm. We also show from our experiments that the use of our descriptor can significantly improve the retrieval rates

Effective and ethical use of strategic data analysis for the purposes of election engineering in India.

There has been a rise in the use of data analytics in the election campaigning process, the potential of which can be seen with the 2012 US presidential election. This dissertation aims to do an examination into the effective and ethical use of data analytical models for the purpose of election engineering in an Indian context. It appraises the current analytical models used in India through the collection of primary data such as semi-structured interviews which were conducted with people working with the different political organizations in India. In total, 6 semi-structured interviews were carried out among representatives from 3 political parties, at both the state level and the national level. The study revealed the usage of data analysis by the national level parties with different strategic approaches towards it, whereas, the state party focused more on traditional strategic methods of data analytics. The recommendation for improving the effectiveness of current data analytical models in India, is through providing a structured method to be followed which could be tailored for specific political party requirements. The ethical recommendation involves monitoring and controlling data analytics from breaching the data privacy of individuals through the use of governmental institutions and regulatory bodies.Houve um aumento no uso de análise de dados no processo de campanha eleitoral, cujo potencial pode ser visto nas eleições presidenciais de 2012 nos EUA. Esta dissertação tem como objetivo fazer um exame sobre o uso efetivo e ético de modelos analíticos de dados para fins de engenharia eleitoral em um contexto indiano. Ele avalia os modelos analíticos atuais usados na Índia através da coleta de dados primários, como entrevistas semi-estruturadas que foram realizadas com pessoas que trabalham com as diferentes organizações políticas na Índia. No total, foram realizadas 6 entrevistas semi-estruturadas entre representantes de 3 partidos políticos, em nível estadual e nacional. O estudo revelou o uso da análise de dados pelas partes de nível nacional com diferentes abordagens estratégicas, enquanto o partido do estado se concentrou mais em métodos estratégicos tradicionais de análise de dados. A recomendação para melhorar a eficácia dos atuais modelos analíticos de dados na Índia é através do fornecimento de um método estruturado a ser seguido, que pode ser adaptado para requisitos específicos de partidos políticos. A recomendação ética envolve monitorar e controlar a análise de dados por violar a privacidade de dados de indivíduos através do uso de instituições governamentais e órgãos reguladores

Numerical Simulation of Two-dimensional Forced Convective Film Boiling Flow over a Horizontal Flat Surface

AbstractIn this numerical study, a Coupled Level Set and Volume of Fluid (CLSVOF) interface capturing method with multi-directional advection algorithm is used to investigate the flow and heat transfer characteristics of a two-dimensional, incompressible, laminar, forced convective saturated film boiling over an isothermal horizontal flat plate. In this study, the effects of wall superheats and liquid free stream velocities are considered for water and refrigerant R-134a. In the numerical simulation of forced convection saturated film boiling flows, the wall shear stress and the heat transfer coefficient results are evaluated with Cess and Sparrow1 correlations developed based on the boundary layer approximations. The numerical results show good agreement with the correlations developed based on the boundary layer theory. Both heat transfer coefficient and wall shear stress are strongly dependent on the wall superheats and inflow free stream velocities

The Chaotic Structure Of The C/C/US Exchange Rate

This paper provides a brief survey of previous applications of chaotic analysis to exchange rate series and of the connection between theoretical models of exchange rates and the chaotic approach. and then considers the key elements required to establish a chaotic structure and apply the analysis to the daily $C/$US exchange rates over the period 1973 to 2003 In particular the overshooting hypothesis as represented by the chaotic structure is investigated