Computer-assisted language learning (CALL) programs developed earlier for vocabulary acquisition employed mainly word-list pedagogy and could not present information in a real world context. Advancement in computer technology has triggered the development of multimedia CALL programs which can present information in different formats using graphics, sound, text, and video with links to other chunks of information. The purpose of this study was to examine the effects of two multimedia CALL programs on vocabulary acquisition. Participants were 86 intermediate level English as a second language (ESL) students. They were randomly assigned to one of two treatment groups. Students in group one viewed a program with Motion Graphics and text. Students in group two viewed a program that had Still Graphics and text. Their task was to study ten names of hand and power tools. Both groups took the pretest, viewed the video of the tools, had an immediate posttest and a two-week delayed posttest.The results yielded no treatment effects. Further analysis revealed time effects but no interaction between treatment and time. Students who learned through Motion Graphics performed significantly better on the recall tests than those who learned through Still Graphics. Further research in this area involving the use of various graphic formats in a CALL environment is needed. / Ph. D.

This thesis deals with the development and evaluation of blind discrete cosine transform-based watermarking algorithms for copyright protection of digital still images using handwritten signatures and mobile phone numbers. The new algorithms take into account the perceptual capacity of each low frequency coefficients inside the Discrete Cosine Transform (DCT) blocks before embedding the watermark information. They are suitable for grey-scale and colour images. Handwritten signatures are used instead of pseudo random numbers. The watermark is inserted in the green channel of the RGB colour images and the luminance channel of the YCrCb images. Mobile phone numbers are used as watermarks for images captured by mobile phone cameras. The information is embedded multiple-times and a shuffling scheme is applied to ensure that no spatial correlation exists between the original host image and the multiple watermark copies. Multiple embedding will increase the robustness of the watermark against attacks since each watermark will be individually reconstructed and verified before applying an averaging process. The averaging process has managed to reduce the amount of errors of the extracted information. The developed watermarking methods are shown to be robust against JPEG compression, removal attack, additive noise, cropping, scaling, small degrees of rotation, affine, contrast enhancements, low-pass, median filtering and Stirmark attacks. The algorithms have been examined using a library of approximately 40 colour images of size 512 512 with 24 bits per pixel and their grey-scale versions. Several evaluation techniques were used in the experiment with different watermarking strengths and different signature sizes. These include the peak signal to noise ratio, normalized correlation and structural similarity index measurements. The performance of the proposed algorithms has been compared to other algorithms and better invisibility qualities with stronger robustness have been achieved.

This thesis deals with the development and evaluation of blind discrete cosine transform-based watermarking algorithms for copyright protection of digital still images using handwritten signatures and mobile phone numbers. The new algorithms take into account the perceptual capacity of each low frequency coefficients inside the Discrete Cosine Transform (DCT) blocks before embedding the watermark information. They are suitable for grey-scale and colour images. Handwritten signatures are used instead of pseudo random numbers. The watermark is inserted in the green channel of the RGB colour images and the luminance channel of the YCrCb images. Mobile phone numbers are used as watermarks for images captured by mobile phone cameras. The information is embedded multiple-times and a shuffling scheme is applied to ensure that no spatial correlation exists between the original host image and the multiple watermark copies. Multiple embedding will increase the robustness of the watermark against attacks since each watermark will be individually reconstructed and verified before applying an averaging process. The averaging process has managed to reduce the amount of errors of the extracted information. The developed watermarking methods are shown to be robust against JPEG compression, removal attack, additive noise, cropping, scaling, small degrees of rotation, affine, contrast enhancements, low-pass, median filtering and Stirmark attacks. The algorithms have been examined using a library of approximately 40 colour images of size 512 512 with 24 bits per pixel and their grey-scale versions. Several evaluation techniques were used in the experiment with different watermarking strengths and different signature sizes. These include the peak signal to noise ratio, normalized correlation and structural similarity index measurements. The performance of the proposed algorithms has been compared to other algorithms and better invisibility qualities with stronger robustness have been achieved.

Thesis (MScAgric (Viticulture and Oenology))--University of Stellenbosch, 2009. / ENGLISH ABSTRACT: The total sale of brandy for 2007 in South Africa was R 7 300 000 000 and local statistics indicate that brandy is by far the most purchased spirit beverage. Sales of brandy even outweigh the total sales for whisky and the forecast for the estimated sales of brandy in the next five years is said to increase by 25%. It is therefore crucial to investigate those factors that influence the production of brandy as better understanding and control of these processes leads to the production of a brandy that is consistent and of premium quality. Many factors influence the final outcome of distillates. Of these factors, the distillation technique, the apparatus used for the purpose of distillation together with the low wine is of utmost importance as they influence the sensory profile and the chemical composition of the distillate. The effect of different variations of pot still designs on the chemical composition and the sensory profile of the resultant distillate was investigated. Five different Pot still variations were used and varied with regards to the design of their pot still head and swans neck apparatus. Two low wines were used for the purpose of distillations and were both from 2007 vintage. GCFID was used to identify the volatile compounds found in the distillates and together with Quantitative Descriptive Analysis (QDA) a profile of the distillates was produced which was used to differentiate between the different pot still variations and their effect on the final product. The data generated from the QDA sessions was subjected to Principal Component Analysis (PCA) and together with the chemical analysis a correlation between certain compounds and sensory attributes were found in the distillates. Distillate samples were also subjected to a sensory style classification system and were classified accordingly. The chemical composition of the two low wines prior to distillations differed significantly from each other with low wine one containing a larger amount of total esters and carbonyl compounds whilst low wine two contained a larger amount of total higher alcohols and acids. The distillates of low wine one also contained over all larger amounts of total esters and in the case of the distillates of low wine two, they contained larger amounts of higher alcohols and acids than low wine one. Variation one was based on the Alambic Charentais method of pot still design and it was found that only variation one influenced the chemical composition and the sensory profile of the distillates. This variation produced a distillate with a lower amount of total esters and more specifically ethyl acetate as well containing a lower intensity of the fruit and sweet associated caramel aromas and flavours. The esters, ethyl acetate and the ethyl esters of the long chained fatty acids were found to correlate with the sensory attributes known as fruit associated aroma, soapy aroma, and spicy aroma and therefore indicated that these compounds are responsible for these attributes. There were no correlations found between the chemical compounds, sensory attributes and sensory style classifications in the distillates of both low wine one and two. It was shown that the addition of certain esters, carbonyl compounds, higher alcohols and acids in specific ratios could alter the sensory classification of the distillates. Therefore the chemical composition and the sensory characteristics of distillates are largely dependent on the chemical composition of the low wine prior to distillation rather than the pot still design. Therefore, with further research it could be possible to predict the outcome of the chemical composition of the distillates by analyzing the chemical compounds found in the low wine prior to distillation. / AFRIKAANSE OPSOMMING: Die totale verkope aan brandewyn vir 2007 in Suid Afrika beloop R7 300 000 000 en statistiek wys dat brandewyn by verre die mees gesogte spiritus drank is. Verkope van brandewyn is selfs meer as die verkope van whisky en die voorspelling is dat die verkope van brandewyn met 25% gaan vermeerder in die volgende vyf jaar. Dit is dus belangrik om die faktore te ondersoek wat die produksie van brandewyn beïnvloed om sodoende die verstokingsproses te verstaan en te kontroleer om ‘n konsekwente kwaliteitsproduk op die mark te plaas. Baie faktore beïnvloed die finale produk. Faktore soos die distillasie tegnieke, die apperate wat gebruik word vir distillasie tesame met die rabatspiritus is van die uiterste belang aangesien dit die sensoriese profiel en die chemiese samestelling van die distillaat beïnvloed. Die effek van die verskillende variasies van potketelhelms op die chemiese samestelling van die distillate word ondersoek. Vyf verskillende helms met variasies in die swaannek ontwerp was gebruik. Twee verskillende rabatspiritus, van die 2007 oesjaar, was gebruik vir distillasie. GC-FID was gebruik om die vlugtige komponente van die distillate mee vas te stel. Kwantitatiewe Beskrywende Analise (QDA) is gebruik om ‘n profiel van die distillate op te stel wat weer gebruik is om te differensieer tussen die verskillende potketelhelm variasies en hulle effek op die finale produk. Die data wat deur die QDA sessies gegenereer was, is in die Vernaamste Komponent Analise (PCA) ingevoer en tesame met die chemiese analise is ‘n korrelasie tussen sekere komponente en die sensoriese analise van die distillate gevind. Distillaat monsters was ook aan sensoriese styl van klassifikasie onderwerp en is as volg daarvan geklassifiseer. Die chemiese samestelling van die twee rabatspiritus voor finale distillasie het betekenisvol van mekaar verskil ten opsigte daarvan dat die eerste rabatspiritus het hoë konsentrasies esters en karboniel verbindings gehad terwyl die tweede rabatspiritus meer hoë konsentrasies van sure en hoër alkohole gehad het. Die distillaat van die eerste rabatspiritus het ook hoë konsentrasies esters en karboniel verbindings gehad terwyl die distillaat van die tweede rabatspiritus weer hoë konsentrasies van sure en hoër alkohole gehad het. Variasie een is gebaseer op die Alambic Charentais van potketel ontwerp en daar is ook gevind dat hierdie variasie die enigste een was wat die chemiese samestelling en die sensoriese profiel van die distillate beïnvloed het. Hierdie variasie het ‘n distillaat geproduseer wat lae konsentrasies van totale esters, veral etielasetaat, sowel as laer intensiteit van vrugtige en soet geassosieerde karamel aromas en geure. Die esters, etielasetaat en etiel esters van die lang ketting vetsure, is gevind dat dit goed korreleer met die sensoriese eienskappe wat geassosieer word met vrugtige aromas, spesery-agtige aromas en seperige aromas. Daar is geen korrelasie gevind tussen die chemiese verbindings, sensoriese eienskappe en sensoriese styl van klassifikasie van distillate een en twee nie. Dit was ook bewys dat byvoeging van esters, karboniel verbindings, sure en hoër alkohole, in spesifieke verhoudings, die sensoriese eienskappe kan verander. Dus is die chemiese samestelling en sensoriese eienskappe van die distillate grootliks afhanklik van die chemiese samestelling van die rabatspiritus, voor die tweede distillasie, as wat dit afhanklik is van die potketelhelm ontwerp. Gevolglik, met verdere v navorsing, is dit moontlik om die uitkoms van die chemiese samestelling van die distillaat te voorspel deur die analise van die chemiese verbindings van die rabatspiritus te ontleed.

A idade gestacional é uma medida importante, pois quando o bebê nasce antes da 37ª semana há riscos para alterações do desenvolvimento. A relação dos bebês com pais fornece base para o desenvolvimento dos padrões de autorregulação, para o aumento da sensibilidade materna, e para o desenvolvimento do apego. Permeando a hipótese de que, a idade gestacional pode influenciar no desenvolvimento infantil, o objetivo do estudo foi verificar a influência da idade gestacional nas habilidades do desenvolvimento infantil (motora grossa, motora fina-adaptativa, pessoal-social e de linguagem) e a qualidade da interação na díade mãe-bebê, ao longo do primeiro ano de vida (três, nove e 12 meses). Cumpriram-se os princípios éticos. Participaram do estudo 28 díades mãe-bebê, com crianças nascidas entre a 32ª a 40ª semana de gestação, recrutadas ao nascimento. Aos três meses os familiares foram contatados para a primeira avaliação, que constou da aplicação do protocolo de anamnese, aplicação do procedimento Face to Face Still-Face (FFSF) e do Teste de Screnning de Desenvolvimento Denver II (TSDD-II). Aos nove meses repetiu-se a aplicação do FFSF, TSDD-II e foi verificada a qualidade da interação por meio do Child-Adult Relationship Experimental Index (CARE-Index). Aos 12 meses repetiu-se a medida do desenvolvimento TSDD-II e foi aplicada o paradigma laboratorial da Situação Estranha (SE). O tratamento estatístico constou de análise descritiva e aplicação do Teste de Correlação de Spearman, Teste exato de Fischer, Teste de Mann-Whitney e Teste Anova de Medições Repetidas. Os resultados indicaram influência da idade gestacional nas habilidades do desenvolvimento infantil (motora grossa, motora finaadaptativa, pessoal-social e de linguagem), aos três, nove e doze meses, com valor maior nível de significância aos três meses. A qualidade da interação avaliada por meio do CARE-index, indicou predomínio de mães com alto nível de sensibilidade (81,82%). Os padrões de autorregulação avaliados por meio do procedimento FFSF indicaram que 57,14% da casuística apresentaram orientação social não positiva e 42,86% orientação social positiva aos três e aos nove meses 78,57% orientação social não positiva e 21,43% orientação social positiva. O padrão de Apego, avaliado pela SE, verificou apego inseguro para 60,71% e apego seguro em 39,29% da casuística. / Gestational age is an important baseline because when the infant is born before the 37th week there are risks for developmental changes. The relationship between infants and parents provides a basis for the development of self-regulation standards, for the increase of maternal sensitivity, and for the development of attachment. Permeating the hypothesis that gestational age may influence infant development, this study aimed to verify the influence of gestational age on infants developmental skills (gross motor, fine-adaptive motor, personal-social and language), and the quality of gestational age of the mother-infant dyad interaction during the first year of life (three, nine and 12 months). Ethical principles were fulfilled. The study included 28 mother-infant dyads, with children born between the 32nd and 40th weeks of gestation, recruited at birth. At three months old the family members were contacted for the first evaluation, which included the application of the protocol of anamnesis, application of the Face to Face Still-Face (FFSF) procedure and the Denver Development Screening Test II (DDST-II). At nine months the FFSF, DDST-II was repeated and the quality of the interaction was verified through the Child-Adult Relationship Experimental Index (CARE-Index). At 12 months the DDST-II development measurement was repeated and the laboratory paradigm of the Strange Situation (SE) was applied. The statistical treatment consisted of descriptive analysis and application of Spearman\'s Correlation Test, Fischer\'s Exact Test, Mann-Whitney Test and Repeated Measures Anova Tests. The results indicated the influence of gestational age on infant\'s developmental abilities (gross motor, fine-adaptive motor, personal-social and language) at three, nine and twelve months, with a higher level of significance at three months old. The quality of the interaction evaluated through CARE-index, indicated predominance of mothers with a high level of sensitivity (81.82%). Self-regulation standards assessed through the FFSF procedure indicated that 57.14% of the case analysis had non-positive social guidance and 42.86% had positive social guidance at three, and at nine months 78.57% non-positive social guidance and 21.43% positive social orientation. The Attachment pattern, evaluated by the SE, found unsafe attachment to 60.71% and Secure attachment in 39,29% of the cases analysis.

A idade gestacional é uma medida importante, pois quando o bebê nasce antes da 37ª semana há riscos para alterações do desenvolvimento. A relação dos bebês com pais fornece base para o desenvolvimento dos padrões de autorregulação, para o aumento da sensibilidade materna, e para o desenvolvimento do apego. Permeando a hipótese de que, a idade gestacional pode influenciar no desenvolvimento infantil, o objetivo do estudo foi verificar a influência da idade gestacional nas habilidades do desenvolvimento infantil (motora grossa, motora fina-adaptativa, pessoal-social e de linguagem) e a qualidade da interação na díade mãe-bebê, ao longo do primeiro ano de vida (três, nove e 12 meses). Cumpriram-se os princípios éticos. Participaram do estudo 28 díades mãe-bebê, com crianças nascidas entre a 32ª a 40ª semana de gestação, recrutadas ao nascimento. Aos três meses os familiares foram contatados para a primeira avaliação, que constou da aplicação do protocolo de anamnese, aplicação do procedimento Face to Face Still-Face (FFSF) e do Teste de Screnning de Desenvolvimento Denver II (TSDD-II). Aos nove meses repetiu-se a aplicação do FFSF, TSDD-II e foi verificada a qualidade da interação por meio do Child-Adult Relationship Experimental Index (CARE-Index). Aos 12 meses repetiu-se a medida do desenvolvimento TSDD-II e foi aplicada o paradigma laboratorial da Situação Estranha (SE). O tratamento estatístico constou de análise descritiva e aplicação do Teste de Correlação de Spearman, Teste exato de Fischer, Teste de Mann-Whitney e Teste Anova de Medições Repetidas. Os resultados indicaram influência da idade gestacional nas habilidades do desenvolvimento infantil (motora grossa, motora finaadaptativa, pessoal-social e de linguagem), aos três, nove e doze meses, com valor maior nível de significância aos três meses. A qualidade da interação avaliada por meio do CARE-index, indicou predomínio de mães com alto nível de sensibilidade (81,82%). Os padrões de autorregulação avaliados por meio do procedimento FFSF indicaram que 57,14% da casuística apresentaram orientação social não positiva e 42,86% orientação social positiva aos três e aos nove meses 78,57% orientação social não positiva e 21,43% orientação social positiva. O padrão de Apego, avaliado pela SE, verificou apego inseguro para 60,71% e apego seguro em 39,29% da casuística. / Gestational age is an important baseline because when the infant is born before the 37th week there are risks for developmental changes. The relationship between infants and parents provides a basis for the development of self-regulation standards, for the increase of maternal sensitivity, and for the development of attachment. Permeating the hypothesis that gestational age may influence infant development, this study aimed to verify the influence of gestational age on infants developmental skills (gross motor, fine-adaptive motor, personal-social and language), and the quality of gestational age of the mother-infant dyad interaction during the first year of life (three, nine and 12 months). Ethical principles were fulfilled. The study included 28 mother-infant dyads, with children born between the 32nd and 40th weeks of gestation, recruited at birth. At three months old the family members were contacted for the first evaluation, which included the application of the protocol of anamnesis, application of the Face to Face Still-Face (FFSF) procedure and the Denver Development Screening Test II (DDST-II). At nine months the FFSF, DDST-II was repeated and the quality of the interaction was verified through the Child-Adult Relationship Experimental Index (CARE-Index). At 12 months the DDST-II development measurement was repeated and the laboratory paradigm of the Strange Situation (SE) was applied. The statistical treatment consisted of descriptive analysis and application of Spearman\'s Correlation Test, Fischer\'s Exact Test, Mann-Whitney Test and Repeated Measures Anova Tests. The results indicated the influence of gestational age on infant\'s developmental abilities (gross motor, fine-adaptive motor, personal-social and language) at three, nine and twelve months, with a higher level of significance at three months old. The quality of the interaction evaluated through CARE-index, indicated predominance of mothers with a high level of sensitivity (81.82%). Self-regulation standards assessed through the FFSF procedure indicated that 57.14% of the case analysis had non-positive social guidance and 42.86% had positive social guidance at three, and at nine months 78.57% non-positive social guidance and 21.43% positive social orientation. The Attachment pattern, evaluated by the SE, found unsafe attachment to 60.71% and Secure attachment in 39,29% of the cases analysis.

Using a modified still-face procedure the present study explores 3-6-month-old infants' behavioral and physiological responses to mothers' screen distractions during mother-infant interactions. In the modified phone still-face procedure the neutral face of the traditional still face procedure was replaced with mothers' texting on their mobile phones. Infants' cortisol stress responses to mothers' device use were assessed through the collection of 3 infant saliva samples. Infants' behavioral responses including facial expressions, vocalizations, gaze and self-comforting behaviors were also explored. All mother-infant interactions were videoed recorded and coded for analysis. Thirty-four mother-infant dyads participated, average ages for mothers was 29 years and 4.4 months for infants. As predicted, infants demonstrated the changes in affect associated with the still-face effect, with significant differences in positive and negative affect during the play phases and the phone still face phase. As a whole, infants did not respond with increased cortisol responses, however, when individual differences were explored 47% responded with increased stress during mothers' phone distractions. Mother's frequency and attitudes towards device use were also assessed but were unrelated to infant responses. Implications and directions for future research are discussed.

This study of the single artists museums using the Clyfford Still Museum in Denver, Colorado and the Georgia O'Keeffe Museum in Santa Fe, New Mexico aims to compare these institutions to each other in terms of organizational practice and design as well as to the broader museum industry.

Cette thèse s’appuie sur une pratique de la vidéographie, du montage et de la photographie et explore le thème de l’intime. Son hypothèse est que l’espace interrogé de la quotidienneté est identique avec celui de l’exploration des intimes. La réflexion se base sur une analyse des textes théoriques ou des réalisations artistiques de Gaston Bachelard, Roland Barthes, Henri Bergson Sophie Calle, Eliane Chiron, Gilles Deleuze, Georges Didi-Huberman, le Groupe Mu, Pierre Huyghe, Maurice Merleau-Ponty ou encore Agnès Varda, et s’appuie sur un matériel plastique qui permet de cristalliser et situer les déplacements et les objets appartenant aux rituels du quotidien. La première partie explore la sphère intime par l’intermédiaire de photos de famille et d’un medium pictural, le cercle bleu. La seconde partie analyse la sphère intime au travers d’images extraites de films vidéographiques réalisés en suivant des personnes ou dans des espaces privés. La troisième partie est dédiée aux espaces parcourus par les personnages que je filme lorsque je les suis, que je parcours lorsque je marche et par les spectateurs au sein de mon installation. Cette thèse interroge le rôle du corps in situ, au contact des lieux et des situations, dans l’élaboration d’un code narratif et poétique afin d’identifier et d’établir les relations de réciprocité et d’interactions qui lient mon matériel plastique à la durée, au temps et à l’espace, au quotidien qui passe et qui s’étale. Par un jeu de miroirs, ce travail cherche à faire résonner notre mémoire et celle des spectateurs et en hyper-multipliant la banalité du quotidien qui devient extraordinaire. / This thesis is based on a practice of videography, editing and photography and explores the theme of intimacy. Its hypothesis is that the interrogated space of everyday life is identical with that of the exploration of intimates. The reflection is based on an analysis of the theoretical texts or artistic achievements by Gaston Bachelard, Roland Barthes, Henri Bergson Sophie Calle, Eliane Chiron, Gilles Deleuze, George Didi-Huberman, Mu Group, Pierre Huyghe, Maurice Merleau-Ponty or Agnès Varda, and relies on a plastic material that can crystallize and locate the movements and objects belonging to the rituals of everyday life. The first part explores the intimate sphere through family photos and a pictorial medium, the blue circle. The second part analyses the intimate sphere through images extracted from video films made following people or in private spaces. The third part is dedicated to the spaces travelled by the characters that I shadowed, that I walk when I walk and by the spectators within my installation. This thesis questions the in situ role of the body, in con-tact with places and situations, in the development of a narrative and poetic code in order to identify and establish the relations of reciprocity and interactions that bind my plastic material to the duration, the time and the space, the daily life that goes on and spreads. Through a game of mirrors, this work seeks to resonate our memory and that of the audience and hyper-multiplying the banality of everyday life that becomes extraordinary.

O presente estudo teve por objetivo determinar a composição química de aguardentes obtidas por redestilação, a partir de diferentes concentrações iniciais do flegma (30, 40 e 50% v/v), visando definir um processo que resulte em uma melhor qualidade química e um melhor rendimento operacional. Determinou-se a composição química das aguardentes produzidas mediante análises de teor alcoólico, componentes voláteis (aldeídos, ésteres, metanol, álcoois superiores, ácido acético e furfural) e contaminantes (álcoois n-butílico e sec-butílico, cobre e carbamato de etila). Com exceção dos álcoois superiores, todos os destilados alcoólicos simples (DAS) apresentaram composição química de compostos voláteis e de contaminantes dentro das especificações legais. Quanto aos álcoois superiores, os DAS provenientes dos flegmas com 30% e 40% de etanol apresentaram-se ligeiramente acima do máximo permitido pela legislação (360 mg/100mL de álcool anidro). O DAS proveniente do flegma com 50% de etanol apresentou concentração de álcoois superiores dentro do limite estabelecido pela legislação. O álcool isoamílico correspondeu a 70% do teor de álcoois superiores dos destilados. Os resultados mostraram que o teor alcoólico do flegma (30, 40 e 50% em etanol) não influenciou a qualidade química dos destilados alcoólicos simples destinados a elaboração da aguardente de cana. Nas condições da presente pesquisa, a redestilação do flegma a 50% de etanol foi a que proporcionou o maior rendimento operacional na aguardente produzida. / This study aimed to determine chemical composition of spirits obtained by redistillation from different initial concentrations of low wines (30, 40 and 50% alcohol by volume), defining a process resulting in a better chemical quality and operational efficiency than the initial product. The chemical composition of the spirits produced were determined by alcoholic analysis, volatiles (aldehydes, esters, methanol, higher alcohols, acetic acid and furfural acid) and contaminants (alcohols n-butyl and secbutyl, copper and ethyl carbamate). With the exception of higher alcohols, all simple alcoholic distillates (SAD) had a chemical composition of volatiles and contaminants within legal specifications. The higher alcohols, those from low wines with 30% and 40% etanol concentration, exhibited slightly above the maximum allowed by brazilian law (360mg / 100mL anhydrous ethanol). The SAD from the low wines with 50% ethanol showed a higher alcohols concentration within the limits established by law. The isoamyl alcohol matched to 70% of distillated higher alcohol content. The results showed that the alcohol content of low wines (30, 40 and 50% ethanol) did not influence the chemical quality of simple alcoholic distillates for the preparation of sugar cane spirit. Under the conditions of this study, redistillation of low wines 50% ethanol was the one that provided the highest operating income in the produced spirit.