Extração e Representação de Conhecimento de Séries Temporais de Demanda de Energia Elétrica Usando TSKR

The opening of the Brazilian market of electricity and competitiveness between companies in the energy sector make the search for useful information and tools that will assist in decision making activities, increase by the concessionaires. An important source of knowledge for these utilities is the time series of energy demand. The identification of behavior patterns and description of events become important for the planning execution, seeking improvements in service quality and financial benefits. This dissertation presents a methodology based on mining and representation tools of time series, in order to extract knowledge that relate series of electricity demand in various substations connected of a electric utility. The method exploits the relationship of duration, coincidence and partial order of events in multi-dimensionals time series. To represent the knowledge is used the language proposed by Mörchen (2005) called Time Series Knowledge Representation (TSKR). We conducted a case study using time series of energy demand of 8 substations interconnected by a ring system, which feeds the metropolitan area of Goiânia-GO, provided by CELG (Companhia Energética de Goiás), responsible for the service of power distribution in the state of Goiás (Brazil). Using the proposed methodology were extracted three levels of knowledge that describe the behavior of the system studied, representing clearly the system dynamics, becoming a tool to assist planning activities

Praxiologia e representação social sobre formação de professores nas licenciaturas da UFPI

At this investigation it was analyzed the content and the organization of the social representation on the object teachers education, built by teachers of degree courses from Universidade Federal do Piauí(Ufpi), understanding such representation articulated to the teaching habitus of these educators of teachers, what takes under consideration the position that they hold in the structure of the national field and in the subfield of teachers education. For that, it is searched: a) to emphasize the properties of the place in which the trainers act Ufpi as the office of those field and subfield; b) to understand who are the trainers, that is, to grasp the teaching habitus of the trainers with a view of its origin, social trajectory and the specifics of their position in the analyzed field and the subfield and c) to know what they think about their work object, that is, identify and articulate the content and the organization of the social representation analyzed with their properties of field and subfield agents. The research includes the specific degree courses of the Campus Ministro Petrônio Portella , from Teresina(PI), and it was applied to 134 professors of degree courses from this Campus. The data collect joined to the participants happened on the second period of 2008 and on the first semester of 2009. The starting point of the study is the corroboration that the reform of Ufpi degree courses, determined by the legislation and stablished at this Institution in 2005, altered a little the previous situation. It is comprehended that Ufpi and its structures of teachers education as a trainer institution, is limited by the national academic field and by the subfield of teachers education. From this last one, it was listed some of its properties, to show that it is about an academic subfield in construction process. It is emphasized division of the subfield, that separates the trainers into two subgroups the ones who dedicate themselves to the specific education on the contents and those ones who are specialized on pedagogical education placed in antagonistic position and competing by the symbolic power of imposing the meaning and the sense of the teachers education in the degree courses. To understand the comprehension of the problem, it is searched for the models that are in the root of the construction of the University and its project of teachers education in the degree courses, to clarify the matrixes in which the social representation searched is stablished. The theoretical referential articulates the contributions of Moscovici, the theory of social representations, and of Bourdieu, with the concepts that compose its praxeology, as habitus, social field, capital, symbolic power and others, as well as their interpreters and continuators, as Domingos Sobrinho. From the literature about the university and teachers education, it was used Dermeval Saviani, Luiz Antônio Cunha, Maria Isabel da Cunha and Mirian Jorge Warde, besides others. Plurimethodological procedures were adopted, combining associative techniques adjusted to the access to the social representations, and a classic technique, a questionnaire about teaching habitus. The condition is that the teachers build different social representation of the object teachers education because of the distinct positions that they occupy in the structure of the academic field and the subfield of the teachers education. The reached positions in the field and subfield are due to the differences in the origin and social trajectory of these agents, who, therefore, have different teaching habitus from which they build their social representation about their work object. It is highlighted that the teaching habitus and the social representation of two subfields, identified by the belongings to different dimensions of the teachers education in the degree courses, they have similarities and, also, differences. These ones permit to support that the subjects are holders of distinct teaching habitus that conceive different practices, struggles, tensions and conflicts around the sense of teachers education

Processo de formulação estratégica sob a perspectiva dos decisores da CAERN

Os estudos sobre estratégia têm se difundido há muitos anos e seu processo de formulação também está inserido no cotidiano dos gestores. O objetivo do presente trabalho é constatar se há relação entre o pensamento, formulação e mudança estratégica e o nível acadêmico, hierárquico e tempo no cargo dos decisores da CAERN. A abordagem teórica é realizada com os seguintes pontos: estratégia, Decisão e liderança organizacional e o processo de formação da estratégia (Pensamento estratégico; Formulação da estratégia; Mudança estratégica). O estudo é de caráter exploratório descritivo. Para a tabulação e análise dos dados, utilizou-se um programa estatístico em que foi adotada a técnica de análise fatorial, e verificou-se a confiabilidade da escala de Likert utilizada no questionário através do teste Alfa de Cronbach e análise de Spearman a fim de constatar a correlação das variáveis e proporcionar uma abordagem quantitativa à pesquisa. Todos os respondentes da pesquisa são tomadores de decisão cujos níveis hierárquicos que obtiveram representatividade na amostra foram coordenadores, gerentes e chefes de seção. A partir das análises dos resultados do estudo, constatou-se que, das hipóteses levantadas, apenas uma se mostrou coerente com a realidade dos profissionais responsáveis pela estratégia organizacional da empresa: Há correlação entre a formulação estratégica e o nível acadêmico dos decisores (no constructo de formulação deliberada). Notouse também que o nível de formação acadêmica (nível superior) é importante e influencia diretamente no processo da formulação estratégica. Conclui-se que na organização em estudo o conhecimento dos gestores interfere na formulação estratégica

Contribuição ao desenvolvimento de ontologias para processos petroquímicos : estudo de caso em uma planta DEA

In the last decades, the oil, gas and petrochemical industries have registered a series of huge accidents. Influenced by this context, companies have felt the necessity of engaging themselves in processes to protect the external environment, which can be understood as an ecological concern. In the particular case of the nuclear industry, sustainable education and training, which depend too much on the quality and applicability of the knowledge base, have been considered key points on the safely application of this energy source. As a consequence, this research was motivated by the use of the ontology concept as a tool to improve the knowledge management in a refinery, through the representation of a fuel gas sweetening plant, mixing many pieces of information associated with its normal operation mode. In terms of methodology, this research can be classified as an applied and descriptive research, where many pieces of information were analysed, classified and interpreted to create the ontology of a real plant. The DEA plant modeling was performed according to its process flow diagram, piping and instrumentation diagrams, descriptive documents of its normal operation mode, and the list of all the alarms associated to the instruments, which were complemented by a non-structured interview with a specialist in that plant operation. The ontology was verified by comparing its descriptive diagrams with the original plant documents and discussing with other members of the researchers group. All the concepts applied in this research can be expanded to represent other plants in the same refinery or even in other kind of industry. An ontology can be considered a knowledge base that, because of its formal representation nature, can be applied as one of the elements to develop tools to navigate through the plant, simulate its behavior, diagnose faults, among other possibilities

Processo de formulação estratégica sob a perspectiva dos decisores da CAERN

Os estudos sobre estratégia têm se difundido há muitos anos e seu processo de formulação também está inserido no cotidiano dos gestores. O objetivo do presente trabalho é constatar se há relação entre o pensamento, formulação e mudança estratégica e o nível acadêmico, hierárquico e tempo no cargo dos decisores da CAERN. A abordagem teórica é realizada com os seguintes pontos: estratégia, Decisão e liderança organizacional e o processo de formação da estratégia (Pensamento estratégico; Formulação da estratégia; Mudança estratégica). O estudo é de caráter exploratório descritivo. Para a tabulação e análise dos dados, utilizou-se um programa estatístico em que foi adotada a técnica de análise fatorial, e verificou-se a confiabilidade da escala de Likert utilizada no questionário através do teste Alfa de Cronbach e análise de Spearman a fim de constatar a correlação das variáveis e proporcionar uma abordagem quantitativa à pesquisa. Todos os respondentes da pesquisa são tomadores de decisão cujos níveis hierárquicos que obtiveram representatividade na amostra foram coordenadores, gerentes e chefes de seção. A partir das análises dos resultados do estudo, constatou-se que, das hipóteses levantadas, apenas uma se mostrou coerente com a realidade dos profissionais responsáveis pela estratégia organizacional da empresa: Há correlação entre a formulação estratégica e o nível acadêmico dos decisores (no constructo de formulação deliberada). Notouse também que o nível de formação acadêmica (nível superior) é importante e influencia diretamente no processo da formulação estratégica. Conclui-se que na organização em estudo o conhecimento dos gestores interfere na formulação estratégica

Contribuição ao desenvolvimento de ontologias para processos petroquímicos : estudo de caso em uma planta DEA

In the last decades, the oil, gas and petrochemical industries have registered a series of huge accidents. Influenced by this context, companies have felt the necessity of engaging themselves in processes to protect the external environment, which can be understood as an ecological concern. In the particular case of the nuclear industry, sustainable education and training, which depend too much on the quality and applicability of the knowledge base, have been considered key points on the safely application of this energy source. As a consequence, this research was motivated by the use of the ontology concept as a tool to improve the knowledge management in a refinery, through the representation of a fuel gas sweetening plant, mixing many pieces of information associated with its normal operation mode. In terms of methodology, this research can be classified as an applied and descriptive research, where many pieces of information were analysed, classified and interpreted to create the ontology of a real plant. The DEA plant modeling was performed according to its process flow diagram, piping and instrumentation diagrams, descriptive documents of its normal operation mode, and the list of all the alarms associated to the instruments, which were complemented by a non-structured interview with a specialist in that plant operation. The ontology was verified by comparing its descriptive diagrams with the original plant documents and discussing with other members of the researchers group. All the concepts applied in this research can be expanded to represent other plants in the same refinery or even in other kind of industry. An ontology can be considered a knowledge base that, because of its formal representation nature, can be applied as one of the elements to develop tools to navigate through the plant, simulate its behavior, diagnose faults, among other possibilities

Ergonomia cognitiva do trabalho: um estudo baseado na gestão do conhecimento e no capital intelectual

REGIS, Josiana Florencio Vieira. et al. Ergonomia cognitiva do trabalho: um estudo baseado na gestão do conhecimento e no capital intelectual. IN: SIMPOSIO DE ENGENHARIA DE PRODUÇAO, 15., 2008, Sao Paulo. Anais eletronicos... Sao Paulo: UNESP, 2008. TRabalho oral. Disponivel em: http://www.simpep.feb.unesp.br/anais_simpep.php?e=2. Acesso em: 4.set.2010.

O sensível no trabalho docente: representação social entre docentes do Instituto Federal de Educação, Ciência e Tecnologia do Rio Grande do Norte

The aim of this study was to analyze the social representation of the sensible among teachers of the Federal Institute of Education, Science and Technology of Rio Grande do Norte, attempting to identify its constituents and understand the dynamics that gives functionality to your organization. The study is significant considering that the professional conduct can not be delineated in its complexity without unraveling the social representations that teachers themselves have of their being and doing professional. The theoretical and methodological framework of the research is the theory of social representation. 107 teachers from various backgrounds participated. To collect the data were used as instruments : a questionnaire listing, which subsidizes the characterization of the subjects , the TALP - technique of free association of words ( ABRIC , 1994) , the PCM - Procedure for Multiple Ratings ( ROAZZI , 1995) ; questionnaire redemption of sensitive memories of the subjects in their school experiences of childhood , adolescence, youth and teaching practice . The PCM data, in which the slogan was directed at rating Give class, were submitted to multidimensional statistical analysis. Already TALP was analyzed by EVOC 2000 software, the profile questionnaire received descriptive statistical analysis and the memories received the questionnaire analysis of thematic content, Bardin (2004). Taken together, the results point to a social representation of sensitive teaching (the game, the fun, the touch, the smile, the relaxation) are not in the classroom. The sensitive pure still fits in school, but only in the courtyard, on the playground, in the intervals, therefore, outside of space-time class, playful perch that lives in each of us is totally strange to this world of the classroom . After doing the Approximation of ideas , we realized three discourses evident in the reports of teachers : the discourse of Numbness in which we perceive the distance of the teacher in relation to sensitive component as a facilitator in the learning process , the discourse of Feeling , in which we can discern small approximation to the sensitive dialogues and proposed in this study , the speech of reflection in which teachers analyze, evaluate and establish a discourse on the importance of education in sensitive , but not actualize in their teaching practice

Tratamento técnico informacional de discos sonoros: uma abordagem voltata para a análise, representação e organização de acervos musicais

Aborda o tratamento técnico informacional de discos sonoros na Biblioteca Especializada em Música Pe. Jaime Diniz, da Universidade Federal do Rio Grande do Norte. Caracteriza os discos sonoros enquanto suporte informacional. Relata as dificuldades encontradas no processo de tratamento da informação musical em materiais especiais. Objetiva estabelecer diretrizes para a análise, representação e organização do acervo de discos sonoros. Utiliza a pesquisa bibliográfica em fontes impressas e eletrônicas para o suporte teórico, tendo como metodologia o estudo de caso. Conclui que as regras e padrões para o tratamento técnico da informação no campo da Biblioteconomia podem sofrer adaptações para melhor representar o conteúdo musical dos discos sonoros, considerando a necessidade do profissional da informação em aperfeiçoar seus conhecimentos em música.

Ergonomia cognitiva do trabalho: um estudo baseado na gestão do conhecimento e no capital intelectual

REGIS, Josiana Florencio Vieira. et al. Ergonomia cognitiva do trabalho: um estudo baseado na gestão do conhecimento e no capital intelectual. IN: SIMPOSIO DE ENGENHARIA DE PRODUÇAO, 15., 2008, Sao Paulo. Anais eletronicos... Sao Paulo: UNESP, 2008. TRabalho oral. Disponivel em: http://www.simpep.feb.unesp.br/anais_simpep.php?e=2. Acesso em: 4.set.2010.

Estratégias para a organização da pesquisa em cana-de-açúcar: uma análise de governança em sistemas de inovação

PEDRO, Edilson da Silva. Estratégias para a organização da pesquisa em cana-de-açúcar: uma análise de governança em sistemas de inovação. 2008. 226f. Tese (Doutorado em Política Científica e Tecnológica) - Universidade Estadual de Campinas, Campinas, 2008.

A representação social do cuidado no programa saúde da família na cidade de Natal

RODRIGUES, M. P.; LIMA, K. C.; RONCALLI, A. G. A representação social do cuidado no programa saúde da família na cidade de Natal. Ciênc. Saúde Coletiva, v. 13, n. 1, p. 71-82. 2008. ISSN 1413-8123.

Organização e tratamento do acervo de instrumentos musicais: o caso da Instrumentoteca da Escola de Música da Universidade Federal do Rio Grande do Norte

Analisa os processos para organização e tratamento do acervo de instrumentos musicais no âmbito da Instrumentoteca da Escola de Música da Universidade Federal do Rio Grande do Norte. Discorre o conceito de biblioteca especializada, suas características e finalidades. Procura verificar os procedimentos utilizados pela Instrumentoteca quanto à organização do acervo, identifica regras para representação descritiva de instrumentos musicais, tendo como parâmetro o Código Anglo-americano de Catalogação. Exemplifica a representação descritiva e de conteúdo de instrumentos musicais; sugere medidas que venham facilitar o processo de organização e acondicionamento dos instrumentos musicais. Utiliza como metodologia o estudo de caso , tendo como suporte teórico a pesquisa bibliográfica em fontes impressas e eletrônicas . Conclui mostrando a melhor maneira de organizar coleções de instrumentos musicais por meio do Código Anglo-americano de Catalogação, e enfatiza que essas regras podem ser aplicadas para organizar diferentes tipos de suporte de informação.

A representação social do cuidado no programa saúde da família na cidade de Natal

RODRIGUES, Maisa Paulino; LIMA, Kenio Costa de; RONCALLI, Angelo Giuseppe. A representaçao social do cuidado no programa saúde da familia na cidade de Natal. Ciência & Saúde Coletiva, v. 13, n. 1, p. 71-82, 2008.Disponivel em: . Acesso em: 04 out. 2010.

As bibliotecas escolares digitais constituídas através de uma rede de conhecimento digital

BEZERRA, Gesiane Ferreira; CÂMARA, Rafael Silva da; SANTOS, Valdete Honorato dos et al. As bibliotecas escolares digitais contituídas através de uma rede de conhecimento digital. In: SEMINÁRIO DE PESQUISA DO CENTRO DE CIENCIAS SOCIAIS APLICADAS, 16, 2010. Natal. Anais eletrônicos... Natal: SEMINÁRIO CCSA, 2010. Trabalho oral. Disponível em:. Acesso em: 25 nov. 2011.