Últimos itens adicionados do Acervo: Universidade Tecnológica Federal do Paraná

A Universidade Tecnológica Federal do Paraná (UTFPR) é uma universidade pública mantida pelo governo federal e sua sede esta localizada na cidade de Curitiba, capital do estado brasileiro do Paraná.

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‣ Inserções: contribuições argumentativas em um discurso oral

Mamus, Priscilla Teixeira
Fonte: Campo Mourao Publicador: Campo Mourao
Tipo: Artigo de Revista Científica
Português
Inserts are characterized for promoting a better interaction and they facilitate the acceptance of what a speaker says to his listeners. Inserts reduce the flow of information, because they are inserted in the middle of a discursive topic, causing rupture not only in the topic, but also in the syntax of the statement, in some cases. Therefore, they are a oral linguistics mark. As it was pointed in this work, inserts act in an important way in the argument of the speech, contributing with the reach of the speaker's communicative objectives. We analyzed the inserts from the transcription of the lecture entitled O Negro na Universidade: o Direito à Inclusão, uttered by Edvaldo Mendes Zulu Araújo, at the Universidade Estadual de Maringá.; As inserções são caracterizadas por promoverem melhor interação e facilitarem a aceitação daquilo que um falante diz aos seus interlocutores; causam um ralentamento do fluxo informacional, uma vez que são inseridas no meio de um tópico discursivo em andamento, ocasionando ruptura não só do tópico, mas também, em alguns casos, da sintaxe do enunciado. Elas são, portanto, uma marca lingüística da oralidade e, como apontado neste trabalho, atuam de forma relevante na argumentação do discurso...

‣ Análise dosimétrica em pediatria neonatal

Bunick, Ana Paula
Fonte: Curitiba Publicador: Curitiba
Tipo: Dissertação de Mestrado
Português
Chest radiographic examinations are frequently requested for newborn patients hospitalized in a Intensive Care Unit (ICU) Neonatal. However, children are more radiosensitive the younger they are and due to the higher number of cells in replication process. This feature arises greater concern in the scientific community to know the dose of radiation that these pediatric patients are exposed. This paper describes the methodology used for the implementation of a dosimetric analysis in neonatal pediatrics at the Children's Hospital Pequeno Príncipe, in Curitiba. Initially, the work proposes the construction of a phantom of a newborn to subsequent measurement of the radiation dose received by the neonate patient, through the use of TLDs (Thermoluminescent Dosimeters) for measures ESAK (Entrance Surface Air-Kerma) in the thoracic region and measure kerma-air in the deep lung, in water, with the use of an ionization chamber. The scattered radiation dose received by another patient near the patient under examination was also evaluated. The results showed, in general, dose levels below the reference values for the measures ESAK. For the kerma- air in the deep lung, and the values obtained compared to organ dose calculations through software is shown to be below the values obtained with TLDs. The measurements showed that the scattered radiation near the patient examined receive a small contribution of dose during examinations.; Exames radiográficos do tórax são frequentemente solicitados para pacientes recém-nascidos internados na Unidade de Terapia Intensiva (UTI) Neonatal. Entretanto...

‣ Sistema de navegação e localização para um robô escalador magnético de inspeção baseado em sensores LIDAR

Veiga, Ricardo Sales da
Fonte: Curitiba Publicador: Curitiba
Tipo: Dissertação de Mestrado
Português
This work aims to optimize localization of a climbing inspection robot for spherical LPG -- Liquified Petroleum Gas -- tanks and allow autonomous navigation along the entire surface of these tanks. One solution envolving small structures detection using LIDAR sensors is applied to the weld beads that are present inside the tanks. This solution is developed on the first part of this work. Following, a data fusion technique is used to combine the diferent odometry sources on the robot, resulting in a better, higher precision on the inspection as a whole. Finnaly, simultaneous mapping and navigation on the exterior of the spherical tank was studied in order to add one extra layer to the digital map, pinpointing the places where failures and weld beams were found. Validation tests for each one of this techniques are carried out and a performance analysis is also documented herein.; ANP; FINEP; MCT; CAPES; Este trabalho objetiva otimizar a localização de um robô móvel para a inspeção dos tanques de armazenamento de GLP -- Gás Liquefeito de Petróleo -- e permitir a navegação autônoma deste robô por toda a superfície do tanque. A falta de marcos no interior dos tanques levou ao desenvolvimento de uma solução envolvendo detecção de pequenas estruturas com sensores LIDAR (Light Detection and Ranging - Detecção e Telemetria por Luz) aplicada aos cordões de solda...

‣ Integrando música e química: uma proposta de ensino e aprendizagem

Coutinho, Laudicéia Rocha
Fonte: Curitiba Publicador: Curitiba
Tipo: Dissertação de Mestrado
Português
Acompanha: Material didático, p. 117; The music is currently present in the school environment, mainly through the use of mobile devices (Smartphone, mobile phone, MP3, MP4) by students. This master thesis was developed because we believe that music can be used in educational activities for the teaching learning process in chemistry. It is hoped that this study will contribute to building a significant Chemistry teaching process. Therefore, the first step was to seek to know more deeply the contributions of music for teaching through a study of the interrelationship Chemistry and Music. Recent publications of the two areas were the basis of research on music cognition. The research articles in national and international journals on the areas of Chemistry and Music Education also composed the foundations of the study. Lectures relating the themes education learning, music, affection, technologies and musical cognition were assisted and consisted of guidance in seeking to increase their knowledge of music cognition and make the didactic transposition of this knowledge for the teaching and learning in chemistry. So that the voice of teachers and students were part of this study, questionnaires were administered to students and teachers of public schools in the state of Paraná in order to verify how they perceive technologies...

‣ Sistema para sincronização automática de estimulação elétrica no tratamento de insuficiência respiratória em pessoas com lesão medular

Costa, Taisa Daiana da
Fonte: Curitiba Publicador: Curitiba
Tipo: Dissertação de Mestrado
Português
The respiratory failure, caused by spinal cord injury in people with high thoracic paraplegia and tetraplegia, has been the major cause of death for those individuals. The total or partial paralysis of the abdominal muscles and the diaphragm hinders the production of cough and decreases tidal volume. This problem can be alleviated by treatment with transcutaneous functional electrical stimulation (TFES), on diaphragm and abdominal muscles synchronized with the spontaneous respiration. Few studies have been conducted on this matter, and it was found that is of great scientific interest the development of a system capable of automatically triggering the electrical stimulation with inspiration (diaphragmatic stimulation) and expiration events (abdominal stimulation). Therefore, in this work, a respiratory signal acquisition system was developed for the detection of inspiration and expiration events for triggering the electrical stimulation during quiet breathing. The system employs an elastic belt attached to a load cell based on strain gauges for acquiring the respiratory signal. An algorithm based on signal statistical analysis was developed for the detection of inspiration and expiration events. Tests were carried out in eight healthy volunteers. The belt was positioned at the last rib region...

‣ Hidrólise enzimática da polpa celulósica de Eucalyptus dunnii para oportunidades de biorrefinaria

Rocha, Clarissa Fleury
Fonte: Curitiba Publicador: Curitiba
Tipo: Dissertação de Mestrado
Português
The production of ethanol from cellulose pulping industries is an important proposal for the country's economic development and that challenges researchers to seek more efficient technologies that enable the transformation of these industries in biorefineries. There needs to be studied and made possible new sources and new processes to obtain ethanol, and one of the alternatives is the use of lignocellulosic material. This study aims to carry out the enzymatic hydrolysis of Kraft unbleached pulp of the pulp and paper industry with subsequent use of the product of hydrolysis to form paper. The enzymatic hydrolysis was performed with the enzyme cocktail Cellic® CTec2 to 6% in an incubator under the temperature of 50 ° C, pH 5.0-5.5 and 250 rpm. Samples were prepared in triplicate using the ratio of 1.5 grams of pulp into 10 ml of sterile buffer solution beforehand. In the hydrolysis were tested different times of 0.5 h, 1 h, 1.7 h, 3 h, 6 h, 16 h, 24 h, 48 h and 72 h incubation. The solid product of hydrolysis was used for forming the paper and the liquid was separated for the determination of sugars by anion exchange chromatography. For larger hydrolysis times was obtained a higher conversion pulp into glucose (34.6%) and xylose (47.2%)...

‣ Análise e proposta de temas ambientais para o ensino de química no nível médio

Faria, Daniel Da Silva
Fonte: Curitiba Publicador: Curitiba
Tipo: Dissertação de Mestrado
Português
Acompanha: Temas ambientais no ensino da química: tratamento de água de abastecimento, estudo dos solos e fontes de energia: material do professor; This research aimed at developing an educational resource for Chemistry teaching, including proposals for the teaching of environmental issues for the first year of high school. The choice of the specific environmental issues occurred after analysis of the three textbooks most used among 30 public schools in Curitiba and its metropolitan region. The environmental issues were analyzed and classified under the following categories: themes connected to the curriculum; topics not connected to the program content and themes that have connection with other disciplines. From this analysis, data was organized in four tables which summarize the environmental themes presented in the first volume of each author’s book, and relate them to the first year of high school curriculum, to the main issues (water, energy, air, waste and toxic materials, and lithosphere) associated with the presented topics and; in addition, we propose interdisciplinary didactic suggestions based on the topics presented. The choice of environmental themes used in this educational didactic resource was based on two aspects: environmental issues of great importance for humanity and/or themes that appeared less frequently in the textbooks which were analyzed. The selected topics addressed in the educational didactic resource are: drinking water treatment...

‣ Objetos de pesquisa em artes plásticas: documentos poéticos e relatórios imaginais

Thomaz, Vera Lucia Didonet
Fonte: Curitiba Publicador: Curitiba
Tipo: Tese de Doutorado
Português
If what existed and was photographed in the urban landscape has allowed the incorporation of what has become visible in the artifacts named Poetic documents, in the art collection and in the curatorial of exhibitions of Art Museum Ado Malagoli at Rio Grande do Sul (2011-2014), as The poor canon: the precariousness of archeology in fine arts; in contrast, this has led to the organization of Imaginal reports corresponding to the Collection Objects for research in Fine Arts, which exist, were photographed during the experiment, and for their historical bias, were incorporated in the collection of the Paranaense Museum as well as socialized in the Pergamum (2012-2014). This methodological principle of structuring research on the photographic gesture as a creative act in transitional spaces, of the museum actions taken by human beings in relation to surrounding objects, has assured intelligent degrees of interaction beyond the era of our city Curitiba, in the south of Brazil. In this long lasting work in progress, fragmentary, because it is open and communicable as its destination should be, the sharp goal is to show and tell something where entropy and ruin may be seen in the form of art in the observed process from the start. The notions of ‘transience’...

‣ Sistema de tratamento híbrido utilizado na remoção do corante reativo 5g de um efluente têxtil sintético

Santos, Bruna Souza dos
Fonte: Medianeira Publicador: Medianeira
Tipo: Dissertação de Mestrado
Português
In recent years there has been a growth of industrial activities that caused significant impacts to natural resources, and concerns about the environment in general are of particular importance. In this context, the textile industry considered an important activity responsible for part of that development is characterized as liquid effluent generating widely polluter due to the large volume of water needed in this production process. Taking into account the conventional methods and also the difficulties in treating textile effluents, the electrolytic process known as eletrofloculation constitutes an important possibility. This process involves the destabilization of the emulsified pollutants, or suspension in aqueous medium. Thus the aim of this study was to implement a hybrid treatment system used in removing the blue reactive dye 5G of a synthetic textile effluent by eletrofloculation associated with adding natural coagulant the basis of Moringa Oleifera Lam, in order to enhance the level treatment would be achieved with the techniques used alone initially worked up exclusively with eletrofloculation to remove the dye. The variables analyzed were: ddp (potential difference applied), time and pH. Whereas the 95% confidence interval only the quadratic term of the linear term DDP and pH were significant. The removal of color values for the tests ranged from 64.38 to 90.87% and validating an average removal of 89.01%...

‣ Desenvolvimento de modelo de calibração multivariada multiproduto para quantificação de acidez e vitamina C em néctar de frutas e bebidas industrializadas a base de soja

Santos, Dayane Aparecida dos
Fonte: Campo Mourao; Medianeira Publicador: Campo Mourao; Medianeira
Tipo: Dissertação de Mestrado
Português
The determination of the total acid and vitamin C using ultraviolet spectroscopy, visible near infrared spectroscopy and multiproduct multivariate calibration are presented as an alternative to the conventional method through potentiometric titration and oxidation-reduction titration, respectively. The model was developed including different products (fruit nectar of different flavors and light fruit nectar, soybean beverages and light soybean beverages). The calibration and validation data sets were optimized through outliers identification. Partial least squares (PLS) regression was used in order to build the models. Accuracy, represented by the Root Mean Squared Errors of Calibration (RMSEC) and Prediction (RMSEP) were determined. The confidence ellipse and adjust confirms that accuracy was achieved, while residues showed random behavior, confirming linearity for the model developed. Figures of merit, such as, sensitivity, analytical sensitivity, residual prediction deviation, limits of detection and quantification were evaluated. The proposed methodology shows advantages as fastness, does not requires sample preparation and does not generate toxic waste, being an alternative to the conventional method based on potentiometry and oxidation-reduction titration.; CAPES; A determinação da acidez total e vitamina C empregando espectroscopia ultravioleta...

‣ Análise paramétrica de escoamento particulado aplicado ao preenchimento de fraturas

Barbosa, Marcos Vinicius
Fonte: Curitiba Publicador: Curitiba
Tipo: Dissertação de Mestrado
Português
Among the most diverse types of multiphase flow, the particulate flow raises interest due to its presence in several systems such as farmaceutical, chemical and oil and gas indus- try. Specifically in the oil and gas industry the particulate flow may be applied upon the appearence of the invasion phenomenon, characterized by the fluid loss to the reservoir, associated to the presence of fractures. Particles with selected granulometry are added to the mud in order to fill the fratures and reestablish circulation. In this line, the aim of this work is to investigate the particulate flow applied to the filling of a perfectly retangular and impermeable fracture. The flow is mathematicaly modeled by an eulerian approach applied to the continuous phase (fluid) and by a lagrangian approach applied to the discrete phase (particles). The numerical models used to attain the solution of the problem are the Dense Discrete Phase Model (DDPM) which accounts for the coupling between the phases and the Discrete Element Method (DEM) which calculates particle collision. The analysis shows the influence of the fracture length (hF R ), flow paramenters (Reynolds number - Re and dynamic viscosity - μβ ), particle parameters (diameter - Dp and specific mass ratio between particles and fluid - ρp/β ) and parameters of the injection process (number of injected particles - Np...

‣ Ensino de química para deficientes visuais: a importância da experimentação e dos programas computacionais para um ensino mais inclusivo

Fernandes, Tatyane Caruso
Fonte: Curitiba Publicador: Curitiba
Tipo: Dissertação de Mestrado
Português
Acompanha: Química inclusiva: sequência de atividades: estudo das reações químicas numa perspectiva multissensorial; In Brazil, it has now been a few years since students with special needs have been transferred from there specialized institutions to be absorbed in the regular educational system. However, the building infrastructure of schools and the teachers are generally not prepared for this encounter, and barriers are prevailing for proper inclusion of these students. In this research, we believe that one of the ways to solve the problem of inclusion of blind students is trough experiments and digital teaching resources. Regarding Vygotsky’s theory, students with disabilities must learn the same content with the same level of requirement as other students using a multisensory approach. We have developed teaching materials that counts with a sequence of activities and adapted materials to facilitate the teaching and learning of chemical reactions, for students with or without vision problems. The analysis of the research was qualitative, with students from the second grade of high school. The experiments associated to the computer program developed, the activities and materials showed the effective improved learning and also showed the effective inclusion of the visually impaired students.; Há alguns anos está acontecendo no Brasil a transferência dos alunos com necessidades especiais da Educação Especial para o Ensino Regular. No entanto...

‣ Ciência e arte na sala de aula: mediações possíveis entre arte urbana, Joseph Wright e o ensino de óptica geométrica

Silva, Milene Dutra da
Fonte: Curitiba Publicador: Curitiba
Tipo: Tese de Doutorado
Português
Acompanha: Ciência e arte na sala de aula e atividades; A summary of the stages of a qualitative research on Education, developed at UTFPR, Brazil, is presented. The purpose of this work is to rethink Education on some topics of Optics, on the basis of the relationship between Science and Art, which are understood here as inseparable human expressions and representations of the world. Based on this relationship, an alternative didactic unit was developed, aiming the transposition of concepts on Geometrical Optics in high school. The intervention was based on the dialogical and problem-posing approach due to Paulo Freire, and it was applied to six classes at three State high schools in Curitiba. The generative theme was Street Art, ubiquitous in the universe of students. The generated discussion involved the concept of Science and questioning was made using the painting “An Experiment on a Bird in the Air Pump”, by Joseph Wright of Derby (1766). The research strategy was participant observation, and data were processed by constant comparative method. The data were obtained from the cooperative style and the general category set for analysis was that of “Perspectives taken by subject”, since this is consonant with the Freirian conception for education centered on the involved subjects and their experiences. The research made it possible to conclude that the possibilities are promising to increase the teaching of Physics in an approach that aims to reflect on the role of science in building collective and historic knowledge...

‣ Avaliação dos níveis de concentração de radônio em ambientes e águas de poços no estado do Paraná

Corrêa, Janine Nicolosi
Fonte: Curitiba Publicador: Curitiba
Tipo: Tese de Doutorado
Português
Considering the growing interest of International Agencies and national Governmental organs in studies and measurements of radon activity in air, soil gas and ground water (mainly from artesian wells) as well as scarceness of such measurements at Brazilian territory, present studies were initiated by the Laboratory of Applied Nuclear Physics of Federal University of Technology – Paraná (UTFPR) in collaboration with the Institute of Radiation Protection and Dosimetry (IRD) and the Center of Nuclear Technology Development (CDTN) of Brazilian Commission on Nuclear Energy (CNEN). This Collaboration started in 2003. Radon monitoring program is based mainly on use of Solid State Nuclear Track Detectors for radon activity measurements in air. Continuous electronic radon detectors are used for radon measurements in soil gas and water. Current work presents the results of indoor 222Rn activity of dwellings and working places of Curitiba-PR and radon concentration in ground water samples from artesian wells from aquifers of the same area. The indoor measurements of radon activity were performed using Solid State Nuclear Track Detectors CR-39. After the exposition, CR-39 detectors were submitted to chemical development which permitted to make alpha particle tracks counting. The results of calibration of CR-39 together with efficiency of used exhalation chambers as well as alpha particle tracks chemical development procedure were erformed in cooperation with CDTN and collaboration with the National Institute of Radiological Sciences (NIRS). The major part of indoor 222Rn concentration in residences was found below 100 Bq/m3. In the case of working places...

‣ Automatic extraction of regions of interest from images based on visual attention models

Borba, Gustavo Benvenutti
Fonte: Curitiba Publicador: Curitiba
Tipo: Tese de Doutorado
Português
This thesis presents a method for the extraction of regions of interest (ROIs) from images. By ROIs we mean the most prominent semantic objects in the images, of any size and located at any position in the image. The novel method is based on computational models of visual attention (VA), operates under a completely bottom-up and unsupervised way and does not present con-straints in the category of the input images. At the core of the architecture is de model VA proposed by Itti, Koch and Niebur and the one proposed by Stentiford. The first model takes into account color, intensity, and orientation features and provides coordinates corresponding to the points of attention (POAs) in the image. The second model considers color features and provides rough areas of attention (AOAs) in the image. In the proposed architecture, the POAs and AOAs are combined to establish the contours of the ROIs. Two implementations of this architecture are presented, namely 'first version' and 'improved version'. The first version mainly on traditional morphological operations and was applied in two novel region-based image retrieval systems. In the first one, images are clustered on the basis of the ROIs, instead of the global characteristics of the image. This provides a meaningful organization of the database images...

‣ Técnicas avançadas para análise de escoamento bifásico gás-líquido em golfadas

Ofuchi, César Yutaka
Fonte: Curitiba Publicador: Curitiba
Tipo: Dissertação de Mestrado
Português
Characterization of two-phase flows is important for monitoring and control of many industrial processes. In this regard, the proposed paper uses ultrasonic techniques, wire-mesh sensor and high-speed videometry to extract parameters of interest in horizontal gas-liquid two-phase slug flows. The experimental data were obtained from a test rig, where two- phase flow was generated in a horizontal line of 9 meters in length and 26mm in diameter. The ultrasound and wire-mesh data were processed to obtain parameters for characterizing the two-phase slug flow, such as void fraction and the elongated bubble velocity. To assist the analysis, other techniques such as high speed image acquisitions and theoretical models well know in the literature were used.; IBP, FINEP, ANP; A caracterização de escoamentos bifásicos em golfadas é de grande valia para o monitoramento e controle de processos industriais em que ele ocorre. Neste cenário, o presente trabalho tem como objetivo utilizar técnicas de ultrassom, wire-mesh e filmagem de alta velocidade, para obter parâmetros que permitam a caracterização do fenômeno. Os dados experimentais foram obtidos em uma planta de testes, onde foi gerado um escoamento bifásico horizontal água-ar, no padrão em golfadas...

‣ Avaliação de dose de entrada na pele em pacientes pediátricos através de medidas dosimétricas

Oliveira, Ana Luiza da Rosa de
Fonte: Curitiba Publicador: Curitiba
Tipo: Dissertação de Mestrado
Português
The great use of examinations of diagnosis for image in children brought the concern with the increasing dose of radiation absorbed in the accomplishment of a radiographic examination. The objective of this research is to carry through evaluation of the practical ones of x-rays in pediatric radiology, aiming at to optimize the radiological rocedures and the production of images with quality for the diagnosis with the lesser dose to the patient. The methodology is based on the accompaniment of pediatric examinations and dosimetry measures through the use of dosemeters TLD and specific software (DoseCal) for the evidence of the reality in a radiology service. Measures of pediatric patients in radiographic examinations of thorax had been carried through in a public hospital in the Curitiba. Groups with different age groups had been formed in the evaluation of routine examinations of thorax in projections AP/PA and LAT, where they are divided in groups of 0-1 year, 1-5 years, 5-10 years and 10-15 years. Part of the carried through examinations had been evaluated with thermoluminescence dosemeters TLD-100 for the collection of the entrance surface dose (ESD). The measured doses are compared with the gotten ones with the DoseCal software...

‣ Caracterização e aplicação de sensores à fibra ótica no setor petroquímico

Terada, Galileu Godoy
Fonte: Curitiba Publicador: Curitiba
Tipo: Dissertação de Mestrado
Português
This work shows the applicability of long period gratings as transducers in the petrochemical industry. Results are presented in order to illustrate the phases involved in the fabrication, characterization, encapsulation and application of the long period gratings. Three long period gratings were produced using the point-by-point technique based on the ultraviolet irradiation. An encapsulation methodology was proposed to improve the long period grating robustness and versatility. The encapsulated long period grating was applied to the fuel blends and solvents analysis. It was shown that the optical fiber device sensitivity for changes in the external refractive index is not affected by the encapsulation. In addition to the extra protection to external damages added by the encapsulation, the device reproducibility was considerably improved. For the employed samples this improvements range from 40 % to 78 %. Finally the transducer performance was assessed in the analysis of ethanol concentration in ethanol-water mixture. It was found that the long period grating response to the ethanol concentration is non-linear and presents an ambiguous behavior to samples with ethanol concentration ranging from 60 % to 100 %. Four different methods based on artificial neural networks and fuzzy inference systems were proposed to determine the ethanol concentration in ethanol-water mixtures. The method with the best performance was based on artificial neural networks...

‣ Avaliação do desempenho de sistemas de zona de raízes (wetlands construídas) em escala piloto aplicados ao tratamento de efluente sintético

Andrade, Helisson Henrique Borsato de
Fonte: Curitiba Publicador: Curitiba
Tipo: Dissertação de Mestrado
Português
Technological arrangements that integrate systems root zone are presented as plausible option for effluents treatment, mainly because of their simplicity in construction, low cost of implementation/operation and efficiency in removing pollutants. These systems act as biological filters planted with macrophytes, applied to the treatment of domestic and industrial sewage. The present study aimed at the construction and monitoring of two pilot systems for sewage treatment of the roots zones of free vertical hydraulic flow and drowned, mounted in plastic containers with a total volume of 220L each. They were cultivated plant species Canna x generalis LH Bailey (cana indica), heliophytic rhizomatous plant with ornamental foliage and colorful flowers, grown on the support medium with layers of gravel and sand. The systems were fed synthetic substrate with glucose as carbon source, under hydraulic application rate of 125,8 L.m-2.day-1 an organic material and in terms of COD of 300,93± mg.L-1. The drowned system flow had removal efficiencies of Total Kjeldahl Nitrogen, COD and PO4 de, 55±17%, 95±6% e 46±11%respectively. In the system of free flow efficiencies for Total Kjeldahl Nitrogen removal, COD and PO4 were 57 ± 11%, 96 ± 6% and 41 ± 11%...

‣ Alocação de recursos em nível operacional com incerteza nos dados; Sistema de alocação de recursos de transporte com a presença de incerteza nos dados

Lima, Matheus Garibalde Soares de
Fonte: Curitiba Publicador: Curitiba
Tipo: Dissertação de Mestrado
Português
The study aims to address the allocation of resources at the operational level under uncertainties. For this reason, it was proposed an optimization approach based on heuristic methods. The resolutions of production and logistics problems, commonly addressed in operational research, explore various parameters among which the present study considers three variables of uncertainty: demand, operation time and resources availability. For this purpose a logistics problem was chosen as study of case. The problem consists in minimizing cost operation, selection of vehicles in a heterogeneous fleet, consolidation of loads for each client and selecting the type of freight payables. Regarding of freight payables types, there are centered in two different tariffs, mainly due to assets and service negotiation, such as: i) fleet controlled by company and service outsource; ii) fleet and service completely outsource. The resolution of the original problem was broke down in two steps: i) Compartmentalizer and ii) Allocator. Both steps are solved through Tabu Search approach; the first step (Compartmentalizer) generates a list of feasible shipments to fulfill orders up to three different customers. The second step, the allocator uses the list of feasible shipments to define how and when each request will be supplied. The results aim the feasibility of assumes this approach in order to solve real problems.; O estudo tem como finalidade tratar a alocação de recursos no nível operacional com a presença de incertezas. Para isso...