Nowadays, most of the documents are stored in electronic form and there is a high demand to organize and categorize them efficiently. Therefore, the field of automated text classification has gained a significant attention both from science and industry. This technology has been applied to information retrieval, information filtering, news classification, etc. The goal of this project is the automated text classification of photos as invoices or receipts in Visma Mobile Scanner, based on the previously extracted text. Firstly, several OCR tools available on the market have been evaluated in order to find the most accurate to be used for the text extraction, which turned out to be ABBYY FineReader. The machine learning tool WEKA has been used for the text classification, with the focus on the Naïve Bayes classifier. Since the Naïve Bayes implementation provided by WEKA does not support some advances in the text classification field such as N-gram, Laplace smoothing, etc., an improved version of Naïve Bayes classifier which is more specialized for the text classification and the invoice/receipt classification has been implemented. Improving the Naive Bayes classifier, investigating how it can be improved for the problem domain and evaluating the obtained classification accuracy compared to the generic Naïve Bayes are the main parts of this research. Experimental results show that the specialized Naïve Bayes classifier has the highest accuracy. By applying the Fixed penalty feature, the best result of 95.6522% accuracy on cross-validation mode has been achieved. In case of more accurate text extraction, the accuracy is even higher.

Este trabalho apresenta um estudo da aplicação da Transformada de Fourier Janelada à Qualidade da Energia Elétrica. Esta abordagem procura, pela implementação de um algoritmo computacional, detectar, localizar e classificar eventuais distúrbios que ocorrem em um determinado Sistema Elétrico. Da situação atual, tem-se que variações nas formas de ondas dos sinais de tensão como elevação, afundamento e interrupção de tensão, oscilações transitórias e ruídos, são freqüentes, chamando a atenção para a qualidade da energia elétrica fornecida pelas concessionárias. A análise de tais fenômenos, que normalmente é descrita no domínio do tempo (resolução de equação diferencial) ou no domínio da freqüência (através da Transformada de Fourier), pode agora ser analisada simultaneamente em ambos os domínios do tempo e da freqüência, dispondo-se da Transformada de Fourier Janelada. As janelas utilizadas para esta finalidade foram as de Hanning, retangular e a de Kaiser. Para esta análise em específico, a simulação dos diversos distúrbios ocorridos no sistema de distribuição foi realizada através do software ATP - Alternative Transients Program - cujas características seguem corretamente um sistema real da concessionária CPFL - Companhia Paulista de Força. Os testes efetuados mostraram que a Transformada de Fourier Janelada possui uma grande potencialidade quanto à sua aplicação na avaliação da qualidade da energia elétrica. / This dissertation presents a study of Windowed Fourier Transform applied to Power Quality. By the implementation of a computational algorithm, this approach aims to detect, locate and classify disturbances that may occur in Power Systems. Variations in voltage waveforms, such as sag, swell, interruption, oscillatory transient and noise have became frequent in electric systems, attracting the attention to the power quality supplied. The analysis of such phenomena, which is usually described either in the time domain (differential equation resolution) or in the frequency domain (Fourier Transform), can now be analyzed simultaneously in both domains: time and frequency, by the windowed Fourier Transform. The windows used to provide this information are the Hanning, rectangular and Kaiser. The simulation of the diverse disturbances occurred in the distribution system was accomplished by means of ATP software - Alternative Transients Program - whose characteristics correctly follow a real distribution system of CPFL electric utility. The tests show the windowed Fourier Transform has a great potentiality when applied to evaluate the power quality.

No description available.

Submitted by Claudia Rocha (claudia.rocha@udesc.br) on 2017-12-07T13:28:17Z No. of bitstreams: 1 PGEF15MA052.pdf: 2085548 bytes, checksum: e3351d2236cc09fa2f7cd11ad032a56f (MD5) / Made available in DSpace on 2017-12-07T13:28:17Z (GMT). No. of bitstreams: 1 PGEF15MA052.pdf: 2085548 bytes, checksum: e3351d2236cc09fa2f7cd11ad032a56f (MD5) Previous issue date: 2015-09-01 / FAPESC / The present study aimed to evaluate the hydric quality of the Ponte Grande River hydrographic basin in Lages-SC, through the identification of environmental impacts in the environmental protection areas and the evolution of the ways of land occupation between 1984 and 2013. For the determination of the water quality, samples were collected in 57 points of the basin: river sources, confluences and intermediate points. The evaluated parameters were: temperature, dissolved oxygen, conductivity, pH, total dissolved solids, salinity, turbidity, apparent color, total phenols, total suspended solids, nitrate, nitrite, total ammonia, total phosphorus, Chemical Oxygen Demand (COD) and the following heavy metals: copper, silver, cadmium, zinc, lead and total iron. The methodology utilized in the analyzes followed the orientations of the Standard Methods for the Examination of Water and Wastewater (APHA, 1999). The evaluation of land use was performed using the imagery of the satellites TM-Landsat 5 and 8 from the years of 1984, 1993, 2003 and 2013. Six classes of land use were identified: agriculture, water, urban area, field, native forest and reforested area. For 29 years, an increase of the “urban area” class was noticed, due to the reduction of the “field” class. Until 2003, the predominant class was “field”, with 44.84%. In 2013, the urban occupation reached 36.8% of the total area of the basin. In the PPAs, until 2003, “field” was predominant compared to the other uses, with 46.31% of the area. However, in 2013, “native forest” reached 50.83%, making “field” go to the second place with 23.78%. In 1984, 5.51% of the PPAs were not under the Law number 12651/2012 (Forest Code), without the preservation and maintenance of the forest or native covers. In 1993, this rate increased to 12.96%, and in 2003, it has obtained its highest value: 26.54%. In 2013, for the first time, it has dropped, reaching 25.56%. Regarding the water quality, from the 21 analyzed parameters, 12 showed values which are outside of the limits established by the CONAMA Resolution number 357/2005 for class II fresh waters. They were: DO (0.7 - 6.99 mg/L), pH (5.19 - 8.05), turbidity (1 - 289 turbidity units), color (0.5 - 327 color units), ammonia (0.04 - 8.94 mg/L), P (0 - 0.53 mg/L), phenol (0.005 - 0.037 mg/L), Cu (0.04 - 1.34 mg/L), Ag (0.008 - 0.242), Pb (0.05 - 0.36 mg/L), Cd (0.003 - 0.18 mg/L) and Fe (0.39 - 4.73 mg/L). It occurs due to the amount of domestic and industrial sewer, garbage disposal and the flow of agricultural waste that is being received by the hydrographic net. Total dissolved solids, salinity, total suspended solids, nitrate, nitrite and zinc attended the established standards for the referred class. Then, it can be concluded that the urbanization process is affecting not only the way of land use, but also the quality of the waters of the basin / O presente estudo teve por objetivo avaliar a qualidade hídrica na bacia hidrográfica do rio Ponte Grande em Lages-SC a partir da identificação dos impactos ambientais nas áreas de preservação ambiental, e da evolução nas formas de ocupação do solo entre 1984 a 2013. Para a determinação da qualidade da água, foram coletadas amostras em 57 pontos da bacia: nascentes, confluências e pontos intermediários. Os parâmetros avaliados foram: temperatura, oxigênio dissolvido, condutividade, pH, sólidos totais dissolvidos, salinidade, turbidez, cor aparente, fenóis totais, sólidos em suspensão, nitrato, nitrito, amônia total, fósforo total, demanda química de oxigênio (DQO) e os metais pesados: cobre, prata, cádmio, zinco, chumbo e ferro total. A metodologia utilizada nas análises seguiu as orientações do Standard Methods for the Examination of Water and Wastewater (APHA, 1999). A avaliação do uso do solo foi realizada utilizando-se imagens dos satélites TM-Landsat 5 e 8 dos anos de 1984, 1993, 2003 e 2013. Identificou-se seis classes de uso do solo: agricultura, água, área urbana, campo, mata nativa e reflorestamento. Ao longo dos 29 anos, constatou-se uma ascensão da classe área urbana, em detrimento da queda na classe campo. Até o ano de 2003 a classe predominante era o campo com 44,84%. Em 2013, a ocupação urbana atingiu 36,8% da área total da bacia. Nas APP’s até o ano de 2003 o campo foi predominante sobre os outros usos, com 46,31%; porém, em 2013, a mata nativa detinha 50,83%, deslocando a classe campo para o segundo lugar, com 23,78%. Em 1984, 5,51% das APP’s estavam em desacordo com a Lei nº 12.651/2012 (Código Florestal), sem a preservação e manutenção da cobertura florestal ou mata nativa. Em 1993 essa taxa subiu para 12,96%, e em 2003 obteve seu maior índice com 26,54%. Em 2013, pela primeira vez reduziu para 25,26%. Com relação à qualidade da água, dos 21 parâmetros analisados, 12 apresentaram valores fora dos limites estabelecidos pela Resolução CONAMA nº 357/2005 para águas doces de classe II. Foram eles: OD (0,7 - 6,99 mg/L), pH (5,19 - 8,05), turbidez (1 - 289 NTU), cor (0,5 - 327 uC), amônia (0,04 - 8,94 mg/L), P (0 - 0,53 mg/L), fenol (0,005 - 0,037 mg/L), Cu (0,04 - 1,34 mg/L), Ag (0,008 - 0,242), Pb (0,05 - 0,36 mg/L), Cd (0,003 - 0,18 mg/L) e Fe (0,39 - 4,73 mg/L). Isso ocorre devido ao despejo de esgotos domésticos e industriais, deposição de lixo e escoamento de resíduos agrícolas que a rede hidrográfica vem recebendo. As variáveis: sólidos totais dissolvidos, salinidade, sólidos em suspensão, nitrato, nitrito e zinco atenderam aos padrões estabelecidos para a referida classe. Conclui-se então, que o processo de urbanização está impactando não somente a forma de ocupação do solo, mas também a qualidade das águas da bacia

Made available in DSpace on 2016-12-12T20:12:33Z (GMT). No. of bitstreams: 1 PGEF15MA052.pdf: 2085549 bytes, checksum: 4c97b6c831738e8100f62cf74de7b27d (MD5) Previous issue date: 2015-09-01 / The present study aimed to evaluate the hydric quality of the Ponte Grande River hydrographic basin in Lages-SC, through the identification of environmental impacts in the environmental protection areas and the evolution of the ways of land occupation between 1984 and 2013. For the determination of the water quality, samples were collected in 57 points of the basin: river sources, confluences and intermediate points. The evaluated parameters were: temperature, dissolved oxygen, conductivity, pH, total dissolved solids, salinity, turbidity, apparent color, total phenols, total suspended solids, nitrate, nitrite, total ammonia, total phosphorus, Chemical Oxygen Demand (COD) and the following heavy metals: copper, silver, cadmium, zinc, lead and total iron. The methodology utilized in the analyzes followed the orientations of the Standard Methods for the Examination of Water and Wastewater (APHA, 1999). The evaluation of land use was performed using the imagery of the satellites TM-Landsat 5 and 8 from the years of 1984, 1993, 2003 and 2013. Six classes of land use were identified: agriculture, water, urban area, field, native forest and reforested area. For 29 years, an increase of the urban area class was noticed, due to the reduction of the field class. Until 2003, the predominant class was field , with 44.84%. In 2013, the urban occupation reached 36.8% of the total area of the basin. In the PPAs, until 2003, field was predominant compared to the other uses, with 46.31% of the area. However, in 2013, native forest reached 50.83%, making field go to the second place with 23.78%. In 1984, 5.51% of the PPAs were not under the Law number 12651/2012 (Forest Code), without the preservation and maintenance of the forest or native covers. In 1993, this rate increased to 12.96%, and in 2003, it has obtained its highest value: 26.54%. In 2013, for the first time, it has dropped, reaching 25.56%. Regarding the water quality, from the 21 analyzed parameters, 12 showed values which are outside of the limits established by the CONAMA Resolution number 357/2005 for class II fresh waters. They were: DO (0.7 - 6.99 mg/L), pH (5.19 - 8.05), turbidity (1 - 289 turbidity units), color (0.5 - 327 color units), ammonia (0.04 - 8.94 mg/L), P (0 - 0.53 mg/L), phenol (0.005 - 0.037 mg/L), Cu (0.04 - 1.34 mg/L), Ag (0.008 - 0.242), Pb (0.05 - 0.36 mg/L), Cd (0.003 - 0.18 mg/L) and Fe (0.39 - 4.73 mg/L). It occurs due to the amount of domestic and industrial sewer, garbage disposal and the flow of agricultural waste that is being received by the hydrographic net. Total dissolved solids, salinity, total suspended solids, nitrate, nitrite and zinc attended the established standards for the referred class. Then, it can be concluded that the urbanization process is affecting not only the way of land use, but also the quality of the waters of the basin / O presente estudo teve por objetivo avaliar a qualidade hídrica na bacia hidrográfica do rio Ponte Grande em Lages-SC a partir da identificação dos impactos ambientais nas áreas de preservação ambiental, e da evolução nas formas de ocupação do solo entre 1984 a 2013. Para a determinação da qualidade da água, foram coletadas amostras em 57 pontos da bacia: nascentes, confluências e pontos intermediários. Os parâmetros avaliados foram: temperatura, oxigênio dissolvido, condutividade, pH, sólidos totais dissolvidos, salinidade, turbidez, cor aparente, fenóis totais, sólidos em suspensão, nitrato, nitrito, amônia total, fósforo total, demanda química de oxigênio (DQO) e os metais pesados: cobre, prata, cádmio, zinco, chumbo e ferro total. A metodologia utilizada nas análises seguiu as orientações do Standard Methods for the Examination of Water and Wastewater (APHA, 1999). A avaliação do uso do solo foi realizada utilizando-se imagens dos satélites TM-Landsat 5 e 8 dos anos de 1984, 1993, 2003 e 2013. Identificou-se seis classes de uso do solo: agricultura, água, área urbana, campo, mata nativa e reflorestamento. Ao longo dos 29 anos, constatou-se uma ascensão da classe área urbana, em detrimento da queda na classe campo. Até o ano de 2003 a classe predominante era o campo com 44,84%. Em 2013, a ocupação urbana atingiu 36,8% da área total da bacia. Nas APP s até o ano de 2003 o campo foi predominante sobre os outros usos, com 46,31%; porém, em 2013, a mata nativa detinha 50,83%, deslocando a classe campo para o segundo lugar, com 23,78%. Em 1984, 5,51% das APP s estavam em desacordo com a Lei nº 12.651/2012 (Código Florestal), sem a preservação e manutenção da cobertura florestal ou mata nativa. Em 1993 essa taxa subiu para 12,96%, e em 2003 obteve seu maior índice com 26,54%. Em 2013, pela primeira vez reduziu para 25,26%. Com relação à qualidade da água, dos 21 parâmetros analisados, 12 apresentaram valores fora dos limites estabelecidos pela Resolução CONAMA nº 357/2005 para águas doces de classe II. Foram eles: OD (0,7 - 6,99 mg/L), pH (5,19 - 8,05), turbidez (1 - 289 NTU), cor (0,5 - 327 uC), amônia (0,04 - 8,94 mg/L), P (0 - 0,53 mg/L), fenol (0,005 - 0,037 mg/L), Cu (0,04 - 1,34 mg/L), Ag (0,008 - 0,242), Pb (0,05 - 0,36 mg/L), Cd (0,003 - 0,18 mg/L) e Fe (0,39 - 4,73 mg/L). Isso ocorre devido ao despejo de esgotos domésticos e industriais, deposição de lixo e escoamento de resíduos agrícolas que a rede hidrográfica vem recebendo. As variáveis: sólidos totais dissolvidos, salinidade, sólidos em suspensão, nitrato, nitrito e zinco atenderam aos padrões estabelecidos para a referida classe. Conclui-se então, que o processo de urbanização está impactando não somente a forma de ocupação do solo, mas também a qualidade das águas da bacia

Este trabalho apresenta um estudo da aplicação da Transformada de Fourier Janelada à Qualidade da Energia Elétrica. Esta abordagem procura, pela implementação de um algoritmo computacional, detectar, localizar e classificar eventuais distúrbios que ocorrem em um determinado Sistema Elétrico. Da situação atual, tem-se que variações nas formas de ondas dos sinais de tensão como elevação, afundamento e interrupção de tensão, oscilações transitórias e ruídos, são freqüentes, chamando a atenção para a qualidade da energia elétrica fornecida pelas concessionárias. A análise de tais fenômenos, que normalmente é descrita no domínio do tempo (resolução de equação diferencial) ou no domínio da freqüência (através da Transformada de Fourier), pode agora ser analisada simultaneamente em ambos os domínios do tempo e da freqüência, dispondo-se da Transformada de Fourier Janelada. As janelas utilizadas para esta finalidade foram as de Hanning, retangular e a de Kaiser. Para esta análise em específico, a simulação dos diversos distúrbios ocorridos no sistema de distribuição foi realizada através do software ATP - Alternative Transients Program - cujas características seguem corretamente um sistema real da concessionária CPFL - Companhia Paulista de Força. Os testes efetuados mostraram que a Transformada de Fourier Janelada possui uma grande potencialidade quanto à sua aplicação na avaliação da qualidade da energia elétrica. / This dissertation presents a study of Windowed Fourier Transform applied to Power Quality. By the implementation of a computational algorithm, this approach aims to detect, locate and classify disturbances that may occur in Power Systems. Variations in voltage waveforms, such as sag, swell, interruption, oscillatory transient and noise have became frequent in electric systems, attracting the attention to the power quality supplied. The analysis of such phenomena, which is usually described either in the time domain (differential equation resolution) or in the frequency domain (Fourier Transform), can now be analyzed simultaneously in both domains: time and frequency, by the windowed Fourier Transform. The windows used to provide this information are the Hanning, rectangular and Kaiser. The simulation of the diverse disturbances occurred in the distribution system was accomplished by means of ATP software - Alternative Transients Program - whose characteristics correctly follow a real distribution system of CPFL electric utility. The tests show the windowed Fourier Transform has a great potentiality when applied to evaluate the power quality.

In today’s competitive environment, the survival of a company greatly depends on its ability to win over customers. Competition is constantly evolving and improving the marketing strategies and tools adopted by firms. In order to succeed in such an environment, it is vital to maintain a competitive advantage and always be a step ahead of the rest. The first part of this dissertation will examine several marketing tools and methods, which will enable a company to maintain and expand its customer base. The second part will apply these methods to a real life company Temex Ltd. and evaluate the success of the adopted changes.

It is well known that the group completion of the classifying space of the free permutative category is Ω∞ S∞, i.e. stable homotopy of the 0-sphere. Quillen´s S-1S construction can be applied to the free permutative category, which has a pictorial description by pseudo-tangles, and this leads to another pictorial descripted category G which has the classifying space Ω∞ S∞. With help of this model G we can give generators for the homotopy groups of Ω∞ S∞ for i=0,1,2. As a further application, we compute the fundamental group of the free permutative category with duality and show that the association of a duality structure on the categorial level does not lead to a group completion on the level of classifying spaces.

The topic of the thesis is interpretation of a yakutian epic (olonkho) Modun Er Soghotox through the concept of J. Lotman's classifying boundaries. In the begining, the thesis is trying to put the olonkho into broader genre context of yakutian folklore. Formal aspect of the text is important for the definition of the genre, therefore the work attempts to describe some of the most common distinctive features, especially alliteration and paralelism. The second part tries to analyze the worlds of olonkho as the Lotman's semantic spaces. Each world keeps significantly different semantic environment. Crossing the boundaries between these spaces initiates the plot of olonkho. The last part is trying to understand the role of the hero in olonkho, mainly as the mediator between the semantic spaces.

Antes da publicação do trabalho An ideal-valued cohomological index theory with applications to Borsuk-Ulam and Bourgin-Yang theorems\"de Fadell e Husseini [20], haviam sido apenas considerados índices numéricos de G-espaços, nos casos G =\'Z IND. 2\' e G um grupo finito. No entanto, tais índices numéricos são obviamente insuficientes no caso de grupos mais complexos, como por exemplo a 1-esfera \'S POT. 1\'. Neste contexto, Fadell e Husseini introduziram o chamado Indice cohomológico de valor ideal: a cada G-espaço X paracompacto, eles associaram um ideal \'Ind POT. G\' (X;K) do anel de cohomología H*(BG;K), onde a cohomologia de Cech H* é considerada com coeficientes em um corpo K e BG é o espaço classificante do grupo G. Além disso, Fadell e Husseini associaram a este ideal o Índice cohomológico de valor numérico, o qual é definido como sendo a dimensão do K-espaço vetorial obtido do quociente entre o anel H*(BG;K) e o ideal \'Ind POT. G\' (X;K). O objetivo principal deste trabalho é apresentar um estudo detalhado deste índice e utilizá-lo no estudo dos resultados sobre grau de aplicações G-equivariantes provados por Hara em \"The degree of equivariant maps\"[24] / Before the appearance of the paper An ideal-valued cohomological index theory with applications to Borsuk-Ulam and Bourgin-Yang theorems\"of Fadell and Husseini [20], had been considered numerical indices of G-spaces, when G = \'Z IND. 2\' and when G is a finite group. However, such numerical indices are obviously insufficient in the case of groups more complexes, for example, G =\'S POT 1\'. In this context Fadell andHusseini, introduced the called valued-ideal cohomological index: to every paracompact G-space X they associated an ideal \'Ind POT. G\' (X,K) of the cohomology ring H*(BG;K), where the Cech cohomology H* is considered with coefficients in a field K and BG is the classifying space of the group G. Moreover, they associated to this ideal the numerical valued cohomological index, that is, the dimension of K-vector space obtained by the quotient between the ring H*(BG;K) and the ideal \'Ind POT. G\' (X,K). The main objective of this work is to present a detailed study of this index and use such index on the study of results on degree of equivariant maps proved by Hara in his paper The degree of equivariant maps\"[24]