Luciano Flores - Academia.edu (original) (raw)

Papers by Luciano Flores

Memorias Do Instituto Oswaldo Cruz, 2004

The objective of this study was to characterize hepatitis C virus (HCV) genotypes in blood donors... more The objective of this study was to characterize hepatitis C virus (HCV) genotypes in blood donors from the Federal District, Central Brazil, and to compare HCV screening by serological assays and reverse transcriptase polymerase chain reaction (RT-PCR). Plasma samples from 57 individuals with reactive or indeterminate results in serological anti-HCV screening assays (ELISA or EIA) were tested for HCV RNA by RT-PCR. The results from a confirmatory LIA serological assay were also evaluated. The 5' non-coding region of the HCV genome was amplified from 41 PCR positive samples (71.9%), which were further characterized by nucleotide sequencing analysis. Of these, 60.9% were of HCV genotype 1 and 39.1% of genotype 3.

Ciência Rural, 2004

O objetivo deste trabalho foi avaliar três métodos de inseminação artificial (IA) no suíno em rel... more O objetivo deste trabalho foi avaliar três métodos de inseminação artificial (IA) no suíno em relação ao tempo de infusão e perdas por refluxo da DI durante a IA e aos 120 minutos após a IA, bem como dados de operacionalidade medido pelo grau de dificuldade verificado para execução da IA e dados de desempenho reprodutivo. Foram utilizadas 604 matrizes até a parição 7 e IDE ≤ 7 dias. As fêmeas foram inseminadas em 3 tratamentos: T1= método auto IA com pipetas longas lameladas (Supertip ® ), sêmen acondicionado em flexitubos ® e aparato de IA constituído por uma cinta abdominal e uma mala dorsal; T2= método intermediário, pipetas Supertip ® , flexitubos ® e sem aparato de IA; T3= método tradicional, pipetas tipo Melrose, sêmen acondicionado em bisnagas e sem aparato de IA, onde o tempo de IA ficou atrelado ao desempenho do funcionário. O tempo médio de IA foi diferente (P<0,02) entre os três tratamentos (1,7±1,6; 2,2±1,8 e 3,6±1,1 minutos para T1, T2 e T3 respectivamente). Em uma parte dos animais (108 fêmeas distribuídas nos 3 tratamentos) foram coletados os refluxos até 120 minutos transcorridos das IAs por meio de uma bolsa de colostomia fixada na vulva . O volume de refluxo durante a IA foi maior (P<0,02) em T1 (7,7±13,5mL) quando comparado a T3 (5,8±10,8mL). Não foram verificadas diferenças entre os tratamentos no número de espermatozóides eliminados por refluxo até 120 minutos após a IA. Independentemente do tratamento, em torno de 70% do volume e 30% do total de espermatozóides contidos na DI foram eliminados por refluxo em até duas horas após a IA. Na avaliação do grau de dificuldade, foi verificado que, no T1= 85,6%, no T2= 92,9 e no T3= 97,7% das fêmeas tiveram suas inseminações concluídas com até uma intervenção (P<0,05 entre todos os tratamentos). Com relação as taxas de retornos ao estro, taxa de parto ajustada e número de leitões nascidos não foram observadas diferenças entre os tratamentos (P>0,05). As taxas de retorno ao estro foram 10,3, 7,4 e 8,5 %, a taxa de parto ajustada foi de 90,8, 94,0 e 91,7% com 10,9, 11,1 e 11,1 leitões nascidos totais em T1, T2 e T3, respectivamente. O método auto IA e o método intermediário proporcionam IAs mais rápidas e podem substituir o método tradicional sem prejuízos ao desempenho reprodutivo. . Palavras-chave: suínos, inseminação artificial, auto IA, refluxo, tempo de inseminação. ABSTRACT This study was performed to compare the Handsfree insemination method, i.e., the high degree automation procedure, with an intermediate method, which allows less participation of the inseminator during the application of the inseminating dose (ID), and the conventional method, which is widely used in Brazil. The comparison was based on infusion time and losses due to semen backflow during AI and 120 minutes after AI, degree of difficulty experienced during AI procedure, and reproductive performance data. A number of 604 sows on the parity up to 7 and a weaning to estrus interval ≤ 7 days were used. Females were distributed into 3 treatments: T1= handsfree AI method, with long coilable shaft pipettes (Supertip ® ), semen stored in flexitubes ® and AI device consisting of an abdominal belt and a saddlebag; T2= intermediate method, Supertip ® pipettes, flexitubes ® , without AI device; T3= traditional method, Melrose-type pipettes, semen stored in tubs, without AI device. AI time was associated with the inseminator's performance. The average AI time was different (P<0.02) among treatments (1.7±1.6; 2.2±1.8 e 3.6±1.1 minutes for T1, T2 and T3 respectively). One hundred eight sows distributed into the three treatments, had the semen backflow collected up to 120 minutes after AI in a colostomy bag fixed by the vulva. Semen backflow volume during AI was higher (P<0.02) in T1 (7.7±13.5 mL) as compared to T3 (5.8±10.8 mL). There were no differences among treatments in the number of spermatozoa eliminated by semen backflow up to 120 minutes after AI. Regardless of the treatment, nearly 70% of the volume and 30% of the total spermatozoa contained in the ID were eliminated by semen

Ciencia Rural, 1997

Este trabalho foi realizado com o intuito de obter informações epidemiológicas sobre o Rhodococcu... more Este trabalho foi realizado com o intuito de obter informações epidemiológicas sobre o Rhodococcus equi (R. equi) em seis haras do município de Bagé, estado do Rio Grande do Sul. Foram coletadas 36 amostras de solo superficial e 143 de fezes de eqüinos, sendo semeadas em meio seletivo para o R. equi (NANAT) e incubadas em aerobiose a 37°C por até 72 horas. Também foi coletada amostra de solo para determinação de pH e matéria orgânica (MO) de cada haras. A identificação do R. equi baseou-se na pesquisa do "fator equi" e características morfológicas, tintoriais e bioquímicas. Isolou-se o microrganismo de 75% (27/36) das amostras de solo superficial e 66,43% (95/143) das amostras de fezes de eqüinos. O isolamento do R. equi em 100% dos haras analisados comprova a disseminação desta bactéria na região estudada. Os dados obtidos na análise de pH e MO do solo não demonstraram correlação com a taxa de isolamento do R. equi do solo superficial dos haras.

Proceedings of the 28th ACM International Conference on Design of Communication - SIGDOC '10, 2010

The growing popularity of mobile devices gave birth to a still emergent research field, called Mo... more The growing popularity of mobile devices gave birth to a still emergent research field, called Mobile Music , and concerning the development of musical applications for use in these devices. Our particular research investigates interaction design within this field, taking into account relationships with ubiquitous computing contexts, and applying knowledge from several disciplines, mainly Computer Music and Human-Computer Interaction. In this paper we propose using the concept of patterns in such multidisciplinary design context. Design p atterns are, essentially, common solutions for specific design problems, which have been systematically collected and documented. Since they help designers, allowing them to reuse proven solutions within a certain domain, we argue that they can aid multidisciplinary design, facilitating communication and allowing knowledge transfer among team members of diverse fields. We illustrate our point by describing a set of musical interaction patterns that came out of our investigation so far, showing how they encapsulate Computer Music knowledge and how this was helpful in our own design process.

Brazilian Symposium on Human Factors in Computing Systems, 2008

1 UFRGS Instituto de Informática Caixa Postal 15064 91501-970 Porto Alegre RS Brasil {lvf... more 1 UFRGS Instituto de Informática Caixa Postal 15064 91501-970 Porto Alegre RS Brasil {lvflores, mpimenta}@inf.ufrgs.br Tel.: +55 51 3308 6814 ... 2 UFSC EGC Caixa Postal 476 88040-900 Florianópolis SC Brasil richard.faust@egc.ufsc.br Tel.: +55 48 3334 4328

Page 1. Bibliotecas Java Aplicadas a Computação Musical Leandro L. Costalonga, Evandro M. Miletto... more Page 1. Bibliotecas Java Aplicadas a Computação Musical Leandro L. Costalonga, Evandro M. Miletto, Luciano V. Flores, Rosa M. Vicari Instituto de Informática Universidade Federal do Rio Grande do Sul (UFRGS) Caixa ...

This short paper presents GRANU, an application written in Max/MSP to ease the quick production o... more This short paper presents GRANU, an application written in Max/MSP to ease the quick production of musical material for composers who want to make use of the granular synthesis and manipulation of audio samples. GRANU reaches this by offering several options for the control of the various parameters of granular synthesis, in a clear and simple user interface. The paper also includes a report and some impressions of a compositional study conducted as a means to validate this work.

Studies on Implementation, Application, and Use, 2013

Concepts, Methodologies, Tools, and Applications, 2014

The ToolBook II™ 1 multimedia authoring environment has been successfully used to develop Music e... more The ToolBook II™ 1 multimedia authoring environment has been successfully used to develop Music educational software under the projects of the Computer Music Lab of the Federal University of Rio Grande do Sul (UFRGS, Brazil). In this paper are reported the extensions made to this environment's musical capabilities during the development of the Rhythmic Training System (or STR, which stands for Sistema de Treinamento Rítmico). These extensions were necessary to allow the random generation of rhythmic sequences, in order to simulate a "rhythmic dictation", an exercise traditionally carried out in Music classes. Such a task demanded the manipulation of MIDI files at the level of musical events, and that is not directly offered by ToolBook's high level of abstraction functions.

Our Computer Music group has been researching and developing software for Music Education since 1... more Our Computer Music group has been researching and developing software for Music Education since 1995. In search for a specific development methodology for Music Education software, we have collected some heuristics that are very likely to constitute its basis. These heuristics are presented and discussed in this paper. Our set of heuristics cannot be exhaustive, but it does cover important issues of Music Education software development, and we hope they may even help other development teams.

2009 13th International Conference on Computer Supported Cooperative Work in Design, 2009

Page 1. 698 Cooperation in Musical Prototypes Design Aurélio F. Hoppe, Evandro M. Miletto, Lucian... more Page 1. 698 Cooperation in Musical Prototypes Design Aurélio F. Hoppe, Evandro M. Miletto, Luciano V. Flores, Marcelo S. Pimenta Universidade Federal do Rio Grande do Sul, Instituto de Informática Caixa Postal 15064, 91501 ...

Abstract. This paper presents CODES - COoperative Music Prototype DESign, a Web-based environment... more Abstract. This paper presents CODES - COoperative Music Prototype DESign, a Web-based environment for cooperative music prototyping. Its purpose is to allow users to create musical examples (prototypes) that can be tested and modified by the creator, as well as by the ...

This paper presents and discusses the results of two evaluation experiments, done with successive... more This paper presents and discusses the results of two evaluation experiments, done with successive versions of a music education software, involving: user test, heuristic evaluation with interface experts and with experts in the application's knowledge domain, as well as pedagogical aspects evaluation following a script specific for music education software evaluation. Such experiments yielded a situation that's uncommon in most projectsthe possibility to compare the results of two evaluations -and allowed the identification of differences and similarities that confirm interesting aspects about the process of evaluating educational software.

Computational Music Science, 2014

Journal of New Music Research, 2011

Current musical practices point to convergent research trends that bring together eco-composition... more Current musical practices point to convergent research trends that bring together eco-composition, cooperative composition, mobile music and networked music. We present results of three compositional studies devised to test three musical interaction metaphors for ubiquitous computing contexts: the cup metaphor, time tagging and spatial tagging. These metaphors were developed through a conceptual and methodological framework that places compositional activities within the context of software development. We discuss the theoretical underpinnings of our approach and propose ubiquitous music as a frame of reference for this type of research.

... se a alunos iniciantes na música que desejam exercitar o conhecimento na área de teoria e per... more ... se a alunos iniciantes na música que desejam exercitar o conhecimento na área de teoria e percepção ... Apoiado nestas mesmas premissas de inclusão social através da inclusão digital, desenvolvemos o Sistema Multiagente para Simulação de Performance Rítmica no ...

Computer Supported Cooperative Work in Design, 2009

This paper presents CODES -COoperative Music Prototype DESign -a Web-based cooperative music comp... more This paper presents CODES -COoperative Music Prototype DESign -a Web-based cooperative music composition environment. This means it allows any person to connect with other users, through the Web, and cooperate with them to draft simple musical pieces, in a prototyping way. Besides describing our main design decisions and overall implementation solutions, we will also briefly discuss our belief that CODES is not just open source music software, but extends the open source notion as it reuses publicly available code (frameworks) and tools, and allows open music production, in a way as collective as open source development.

Evandro Manara Miletto1,Luciano Vargas Flores1, Jérôme Rutily2, Marcelo Soares Pimenta1 1Institut... more Evandro Manara Miletto1,Luciano Vargas Flores1, Jérôme Rutily2, Marcelo Soares Pimenta1 1Instituto de Informática Universidade Federal do Rio Grande do Sul Caixa Postal: 15064 91501-970 - Porto Alegre - RS - Brasil Tel.: +55 51 3316 6814 {miletto, lvflores, ...