Showing papers by "Messias Borges Silva published in 2017"

Strengths, limitations and challenges in the implementation of active learning in an undergraduate course of logistics technology

Abstract: Teaching strategies have been used by several Higher Education Institutions to improve learning rates. In this context,international surveys have identified Active Learning as a methodology that provides students with the ability to be co-authors of their own learning process in which they occupy the central role. Professors also play an important role ofprocess mediators through this methodology. Thus, strategies such as problem-based learning, collaborative learning, peerassessment, flipped classroom, among others, have been identified by experts as Active Learning approaches that increaselearning rates. It so happens because it improves autonomy in reading, self-learning, discussions in pairs, informationsharing, researches and discoveries. Despite the foregoing, Active Learning implementation in a higher education course isnot an easy task, thence this research seeks answers to the following question: ‘‘What are the main strengths, limitationsand challenges to implement Active Learning in a higher education institution?’’. In order to answer such a question, thispaper aims to present a case study on the implementation of Active Learning in a higher education program. The object ofthis research is an undergraduate course in Logistics Technology of a Brazilian institution, with emphasis on itsimplementation actions, feedback from students and professors and experiences obtained from the discipline of StatisticalMethods, which is considered as pilot project. In order to better understand its theory, a literature review of ActiveMethodology is going to be presented in the first and second sections, the third section is going to highlight someinternational experiences, its methods are going to be presented in the fourth section, and discussions of the case study andresearch conclusions are going to be shown in the fifth and sixth sections, respectively.Keywords:active learning; strengths; limitations; challenges; implementation; higher education; logistics

Application of a process model for the management of intellectual property in a technology licensing office from a brazilian research center

Abstract: In Brazil, the Technology Licensing Office (TLO) are responsible for managing the innovation policy of Scientific and Technological Institutions (STI). However, when analyzing the functioning of the TLO is possible to observe that these are organizations that still require capacitation to perform with efficiency and efficacy of its functions. Thus, the aim of this paper is to report the application of a model for the management of Intellectual Property (IP) in the TLO of the Instituto Nacional de Pesquisas Espaciais (INPE-TLO), in Brazil, which was conducted through an action research. The application of such a model is intended to empower INPE-TLO to perform its functions relating to the protection and commercialization of technologies in order to promote the transfer of technologies created by research and development units of the INPE to the productive sector. As preliminary results, it is possible to highlight the development of an action plan to realignment the flow of activities as well as to customize the model proposed to culture and INPE-TLO structure.

Proposal for a technology vigilance system for a Technology License Office

Abstract: To search for new technologies and to map new scientific and technological developments capable of significantly influencing a scientific and technological institution, is the main role of technological prospecting. Technological prospecting can be a useful tool for the provision of subsidies to finance R&D activities. In this context, using technological prospecting techniques in a Technology License Office is relevant to leverage R&D&I activities in an institution. Thus, the purpose of this task is to present a proposal for the application of technological prospection tools to a Technology License Office, to support R&D&I activities. This task was conducted through bibliographic research and observation of activities. After the studies, it was verified that for technological prospection, different methods should be used, since prospecting technology requires systemic vision, through monitoring, forecasting and future vision, guiding the decision making relevant to the positioning of R&D teams in conducting their research.

Estudo comparativo entre os métodos gradiente reduzido generalizado e algoritmo genético em otimização com múltiplas respostas

Abstract: In this paper we present a comparative study between the Generalized Reduced Gradient (GRG) and Genetic Algorithm (GA) methods to optimize multiple-response processes. Results from experiment design were used to compose the objective function to be minimized. The case studies in this work were selected from literature. A Microsoft Excel spreadsheet was used for parameters optimization using GRG, and the Scilab software was used to GA. Ten replicates were performed and the mean of the results was obtained. To assess the methods was used performance measures based on the mean percentage error. From the performance measures used, the AG showed better results compared to the GRG, indicating that the AG can generate better responses than GRG.

Avaliação dos fatores envolvidos na extração de lipídios da biomassa da microalga chlorella minutíssima via solventes

Abstract: As microalgas tem se tornado uma fonte promissora de energia renovavel; alem de fornecerem lipidios, carboidratos, proteinas, vitaminas e pigmentos, dentre outras diversas substâncias de alto valor agregado, contribuem enormemente para a reducao do efeito estufa na atmosfera, ao consumirem o dioxido de carbono pela realizacao de fotossintese. Os lipidios representam uma importante fonte de materia prima para a obtencao de biocombustiveis, tal como o biodiesel. Um dos processos de obtencao de lipidios de excelente custo beneficio e a extracao via solventes, utilizando cloroformio e metanol. Visando a obtencao do maior rendimento em lipidios por grama de biomassa, foram extraidos lipidios da biomassa da microalga marinha Chlorella minutissima , empregando um arranjo ortogonal de Taguchi com o estudo simultâneo de quatro fatores que influenciam neste processo: umidade da biomassa, proporcao entre os solventes, quantidade total de solventes utilizada e tempo de ultrassom para potencializar a quebra da parede celular, facilitando a liberacao destes lipidios. Obteve-se um teor de 20% em lipidios, pelo emprego de uma biomassa com 64% de umidade, uma proporcao de cloroformio: metanol: agua de 5,7: 3: 1, com um total de 33 mL de solventes e em apenas 70 minutos de ultrassom. Os lipidios extraidos foram transesterificados em biodiesel etilico via catalise acida, obtendo-se uma conversao de 94,45%.

Improving performance by improving the relationship with the companies in the supply chain

Abstract: This paper will address issues related to strategy, quality and management of customers and suppliers, and its main objective is to demonstrate the benefits of cooperation between customers and suppliers in the supply chain. A case is presented about a Brazilian company with assets in several sectors of the economy that implemented a program to reward the cooperation of its key suppliers and obtained several benefits with this program. Finally, it is concluded that issues such as identification of the real needs and expectations of stakeholders, the philosophy of quality at source, consolidation of the customer base and suppliers and cooperation between companies are key points for improving business performance, at every link in the supply chain. Keywords—supply chain, customer relationship supplier, performance in supply, quality; cost reduction.

Microalgas para Produção de Biohidrogênio e Biodiesel

Abstract: Medidas inovadoras, como o desenvolvimento de biocombustiveis de terceira geracao (3G), tem sido consideradas chave para a reducao da emissao de gases de efeito estufa e do aquecimento global. Esses combustiveis sao produzidos a partir de cultivo de microalgas, organismos unicelulares capazes de captar e converter dioxido de carbono (CO2) em hidrogenio (H2) e oxigenio (O2) durante a fotossintese. Microalgas capazes de armazenar lipideos podem ser utilizadas para a producao de biodiesel, enquanto o H2 liberado durante a fotossintese pode ser armazenado e utilizado como combustivel. Desta forma, esta revisao tem como objetivo explorar os parâmetros e as condicoes de cultivo de microalgas em diferentes escalas, alem de apresentar as vantagens da sua utilizacao para a producao de biodiesel e biohidrogenio.

Assessment of the Students’ Expectations and Perception Regarding the Development of the Competences in Industrial Engineering Course

Abstract: The challenges of higher education institutions in analyzing the development of egress skills during undergraduate course become more important in preparing for the job market. Applying assessments that characterize the skills of these students is critical to preparing them professionally, after all, it takes much more than the knowledge gained. The purpose of this article is to present the expectations and perceptions of the students of the Industrial Engineering course in the development of their abilities in the accomplishment of an interdisciplinary project. Soon after the presentation of the project to be developed by the teams, the students evaluated their expectations of personal and interpersonal skills development. At the end of the semester, students assessed their perceptions of the development of these skills through the interdisciplinary project. The assessments were carried out by on the scale students who started from exposure and experimentation to the innovation and leadership of the developed project.

Análise Quantitativa para Aumento da Confiabilidade e Disponibilidade de uma Mandrilhadora CNC de uma Empresa Metalúrgica

Abstract: Este trabalho apresenta a aplicação de conceitos da Engenharia de Confiabilidade, para a criação de um modelo orientado e adaptado para a redução e prevenção de falhas a partir dos dados coletados de uma Mandrilhadora CNC. O método de pesquisa utilizado foi a modelagem quantitativa, aplicada a uma planta industrial metalúrgica. O estudo contribuiu para o aprimoramento do modelo estratégico de gestão de manutenção da empresa. Foram coletados registros dos tempos entre falhas e dos tempos para reparo do equipamento no ERP e a partir dos resultados obtidos, pode-se calcular a função Confiabilidade R(t). Com os valores de MTBF e MTTR, foi determinada a disponibilidade e a taxa de falhas, o que possibilitou a identificação da fase de vida do equipamento pela análise do fator de forma da distribuição de Weibull e pela curva da banheira. Foi feita XXXVII ENCONTRO NACIONAL DE ENGENHARIA DE PRODUCAO “A Engenharia de Produção e as novas tecnologias produtivas: indústria 4.0, manufatura aditiva e outras abordagens avançadas de produção”

Chemometric Methods for the Optimization of the Advanced Oxidation Processes for the Treatment of Drinking and Wastewater

Abstract: Advanced Oxidative Processes (AOP) have been successfully employed as efficient water treatment methods. The utilization of AOP on drinking and wastewater represents currently an alternative to costly, hazardous, and slow processes. In order to further establish the ground basis for AOP in water safety and security, reliable and consistent methods of analysis are required. As an alternative to basic statistical methods, which may not successfully describe and forecast the application of a given treatment methodology of water, the use of chemometrics has increased significantly over the past decades. Chemometric analyses are an intersection between analytical chemistry and applied statistical models in order to predict and extract information from a given condition. This chapter introduces the concepts of chemometrics in environmental engineering issues and the utilization of experimental design to efficiently analyze experimental data in environmental samples. Two case studies are presented to demonstrate the importance of chemometrics in water analyses: (1) considering a Taguchi L16 experimental design, and an optimization study using Response Surface Methodology, to evaluate photo-Fenton and ozone AOP-based treatment on an effluent with high concentration of organic matter; (2) using a Taguchi L9 array to evaluate the combination of photocatalytic degradation and AOP of an industrial effluent. The results showed in this chapter demonstrate how a given statistical method can be successfully employed within the intersection of environmental analyses and water issues.