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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‣ Conditional resource management for mobile devices

Pérez, Martín
Fonte: Curitiba Publicador: Curitiba
Tipo: Dissertação de Mestrado
Português
Mobile devices, such as smartphones and tablets, are becoming more popular everyday. This new devices class is constantly evolving on what concerns computing capabilities, allowing users to switch from larger computers to smaller mobile devices in several cases. Everyday new apps for these devices are developed and published in software repositories, enabling users to quickly install and benefit from new software. In order to deal with the multiple resource requests from different applications running in parallel, the operating system’s resource management design plays a key role. Most resource managers available to mobile phones are designed to maximize the performance of the system as a whole, not always taking into account the characteristics of the processes requiring resources in the application layer. This type of strategy can lead to cases where some applications experience longer latencies than desired while accessing resources, compromising the Quality of Service or system security. This work aims to offer a new resource management model for mobile devices, allowing the creation of rules that can prioritize the resource allocation for specific applications according to their needs. Also it implemented a proof of concept prototype version of this model...

‣ Fatiamento de malhas triangulares: teoria e experimentos

Gregori, Rodrigo Mello Mattos Habib
Fonte: Curitiba Publicador: Curitiba
Tipo: Dissertação de Mestrado
Português
Additive Manufacturing, also known as 3D printing, is a process based on the addition of sucessive layers in order to build a physical object. The data for building this object come from geometric 3D model, usually represented by a triangle mesh. One of the main procedures in this process is to slice the triangle mesh and output a sequence of contours, representing each one of the layers of the object. There are many strategies for slicing meshes, however, most of the current literature is concerned with ad hoc issues such as the quality of the model, specific improvements in the slicing process and memory usage, whereas few of them address the problem from an algorithmic complecity perspective. While current algorithms for this problem ruin in O(n² + k²) or O(n² + nlognk), the proposed algorithm runs in O(nk), for a given input with n triangles, k planes and where k is the average number of slices cutting each triangle in this specific input. This is asymptotically the best that can be achieved under certain fairly common assumptions. The proposed algorithm, called here Slicing by Stabbing (SS), was compared both theoretically and experimentally against known methods in the literature and the results show considerable improvement in execution time.; Manufatura Aditiva...

‣ G-NET: um protocolo de roteamento baseado em algoritmos genéticos para redes AD HOC veiculares

Coutinho, Bruno Viana
Fonte: Curitiba Publicador: Curitiba
Tipo: Dissertação de Mestrado
Português
Ad hoc networks are those the nodes themselves work like routers, clients and servers simultaneously. Mobile ad hoc networks are known as MANETs and VANETs are a specific MANET to vehicle networks that the nodes are vehicles with wireless radios to exchange information. On communication between vehicles happen problems that MANETs are not qualified to solve. Thus, on simple mobile networks the people move in small spaces with their computers and usually have fixed points that facilitate the constant communication. But in VANETs, the high mobility of vehicles causes many problems as rapid and frequent changes in network topology, heterogeneous vehicles, disjoints nodes and links, obstacles and requiring fast delivery that MANETs were not prepared to solve. The DSR is a reactive routing protocol for MANET that only discovers routes when it needs to send data. The DSR is source route, for this it stores and uses route vectors (complete routes) from source to destination, unlike hop-by-hop protocols that know only the next hop. This document proposes a new routing protocol based on DSR, using genetic algorithm to meet the requirements of VANET networks. The DSR was adopted because it is a source route protocol that enables using genetic algorithm techniques...

‣ Proposta de um banco de dados biológicos para pesquisa do Mero (Epinephelus itajara)

Suzuki, Danielle Forbeci
Fonte: Curitiba Publicador: Curitiba
Tipo: Dissertação de Mestrado
Português
The increase in data collect of biological and the lack of standardization in scientific research requires improved information management. The objective of this dissertation is to propose a model database for further analysis and centralization of information for brasilian scientists of mero. In the selection of attributes were used knowledge of the areas of biology and of informatics in a multidisciplinary approach. Was researched and was compiled a selection of attributes removed from from the specialized scientific literature national and international, and validated by the application of an interview with experts involved in research with the fish Mero (Grouper Itajara). At the end of the survey were selected attributes that grouped into tables were used in the creation of the database, it biological, ecological, geographical information collected from articles and with experts. With the creation of this database seeks to establish integration between all of the researchers involved in order to create a single query and storage base in real time information. It is noted that, with the standardization in the collection of data and information on this species, we can promote a better status of evaluation and management for the conservation of species.; CAPES; O aumento da coleta de dados biológicos e a ausência de uma padronização em pesquisas científicas requer uma melhor gestão da informação. O objetivo desta dissertação é propor um modelo de banco de dados para os pesquisadores do mero no Brasil...

‣ Desempenho de esquemas ARQ híbrido para transmissão de informação no uplink com transferência de energia no downlink

Witt, Fernando Augusto de
Fonte: Curitiba Publicador: Curitiba
Tipo: Dissertação de Mestrado
Português
We investigate a form of energy harvesting consisting of gathering energy from the radio frequency (RF) electromagnetic waves, also known as wireless power transfer. We employ a time switching (TS) protocol to coordinate the harvesting process, which separates a time slot into two parts, one devoted to wireless energy transfer and the other to wireless information transmission. The fraction of time devoted to each task, the TS parameter, has great impact on the overall performance. This thesis presents an investigation on the usage of the TS protocol, including the numerical optimization of the TS parameter, when hybrid automatic repeat request (HARQ) schemes are used for information transmission. Our results demonstrate that HARQ schemes can improve the system performance for high SNR. This improvement is even better if the destination applies Chase combining among the previously received copies of a frame.; Investiga-se uma forma de energy harvesting que consiste em recuperar a energia do sinal eletromagnético de rádio frequência (RF), processo que também é conhecido como transferência de energia sem fio. Aplica-se o protocolo time switching (TS) para coordenar o processo de energy harvesting, o qual divide o período de envio de um pacote em dois blocos...

‣ Estudo do equilíbrio de fases de hidratos de metano e da mistura metano e dióxido de carbono

Kakitani, Celina
Fonte: Curitiba Publicador: Curitiba
Tipo: Dissertação de Mestrado
Português
Hydrates are crystalline structures composed by molecules of water or liquid and gas, and the crystal structure that requires stabilization conditions of high pressure and/or low temperatures. The formation and agglomeration of hydrates can cause blockage of transmission lines oil and / or gas, reducing process efficiency, damaging the equipment and compromise the safety of the operating part. In this scenario, in this paper the numerical-experimental study of phase equilibria of hydrates is presented to identify the regions of formation and adjust the operating conditions in the oil industry. To predict hydrate formation conditions of a thermodynamic model based on the ideal solid solution theory by van der Waals and Platteeuw is developed. The model is based on the equality of the chemical potentials of all species in all phases (liquid water, vapor and hydrate). The SoaveRedlich-Kwong equation of state was employed for the phase equilibrium properties of the hydrocarbon fluid phase and the secant method was used to solve the model iteratively. Experimental measurements were performed using pure methane and methane mixture (90 mol%) and carbon dioxide, and the tests were performed on two separate stands, and similar procedures performed based on the isochoric method by monitoring the pressure response of the system with changes in the temperature. The experimental and numerical results were compared with literature data in order to validate the proposed thermodynamic model...

‣ Desenho urbano climaticamente orientado: a influência da vegetação no ambiente térmico externo

Minella, Flávia Cristina Osaku
Fonte: Curitiba Publicador: Curitiba
Tipo: Tese de Doutorado
Português
Vegetation can produce measurable positive effects on the thermal field of urban spaces. In view of thermal inadequacies in outdoor spaces, there is a need for projects and urban plans which consider the use of vegetation as strategic element for the creation of thermal comfort conditions in open spaces. In this sense, the relevance of this study is the proposition of an index which estimates the amount of vegetation fraction needed to reduce the air temperature in urban environments. The index was developed for the city of Curitiba, specifically for its central arteries such as Avenida Sete de Setembro and Avenida Linha Verde. Additionally, pilot studies for the cities of Geneva, Paris and São Paulo are presented. The experimental research uses field measurements for collecting microclimatic data and computer simulations with the ENVI-met model, which allowed the comparison of current and alternative scenarios. All simulations were carried out for summer conditions. The thermal comfort indices Physiological Equivalent Temperature (PET) and Universal Thermal Climate Index (UTCI) were used to assess levels of thermal stress at the pedestrian level. In general, it was observed that the insertion of green areas (particularly under dense canopy) could reduce the daytime heating in urban areas...

‣ Equações algébricas no ensino médio: história, resolução numérica e tecnologia educacional

Abbeg, Thiago Phelippe
Fonte: Curitiba Publicador: Curitiba
Tipo: Dissertação de Mestrado
Português
The Algebraic Equations subject are studied in the High School. Basically, the students learn that, if the equation has rational solution then this will belong to a set that can be established. However, if the equation has some irrational root, no method is approached. Furthermore, because the examples are all practiced with equation with rational roots, many students complete the basic cycle believing that we can solve any equation using the algorithm of Briot-Ruffini. In order to complete this gap left in the student’s formation, this work proposes a broader approach to the study of Algebraic Equations, which combines three ingredients: historical overview of the issue, implementing a simple and effective numerical method (of the Bisection) and use of Educational Technology provided by GeoGebra.; CAPES; O assunto Equações Algébricas é estudado na 3ª Série do Ensino Médio. Basicamente, os estudantes aprendem que, se a equação possui solução racional então esta pertencerá a um conjunto que pode ser estabelecido. No entanto, caso a equação possua alguma raiz irracional, nenhum método é abordado. Além disso, pelo fato de os exemplos praticados serem todos de equações com raízes racionais, muitos estudantes concluem o ciclo básico acreditando que se pode resolver qualquer equação utilizando o algoritmo de Briot-Ruffini. Com objetivo de completar esta lacuna deixada na formação do estudante...

‣ Novos compósitos para materiais de construção civil contendo sedimentos de dragagem de porto marítimo, cinza de madeira de bracatinga e cal residual

Scremim, Cristofer Bernardi
Fonte: Curitiba Publicador: Curitiba
Tipo: Dissertação de Mestrado
Português
With the growth of industrial and municipal wastes generation and overcrowding of their landfills, it increases the necessity to develop alternatives for their economically and ecologically efficient disposal. This research presents results of three type of industrial wastes utilization - dredged sediment (DS) from the Seaport of Paranaguá, wood ashes (WAB) of bracatinga (Mimosa scabrella) and lime production wastes (LPW) - as raw materials for production of construction materials. DS was used as aggregate (30 -70 wt.%), WA – as filler (5 to 40%) and LPW (15 - 30%) - as a binder. The raw materials and final products were characterized and testes by the following complementary methods: XRF, XRD, SEM with EDS, uniaxial compressive strength, water absorption, water resistance, linear expansion and bulk density. It was determined that the uniaxial compressive strength increases with increasing content of the LPW and of the curing time. The max resistance of the test samples (TSs) reaches at the 3rd day of 2.39 MPa, at the 28th day of 2.44 MPa, at the 60th of 4.51 MPa, at the 90th day of 5.45 MPa, and 180th day of 8.77 MPa. The water absorption on the 28th day of curing ranged from 9.50% to 17.20% and on the 90th day was decreased, ranging from 8.30% to 16.60%. All these changes of TSs’ mechanical properties took place due to chemical interaction of the initial components in the moist alkaline outdoors condition with partial chemical destruction of DS and WA particles and with synthesis of new crystalline and amorphous minerals...

‣ Global Fórum América Latina: edição virtual: um exemplo da chamada Nova Era da Colaboração?

Machado, Juliana de Toledo
Fonte: Curitiba Publicador: Curitiba
Tipo: Dissertação de Mestrado
Português
This dissertation was a case study on a Conference on Business as Na Agent of World Benefit, BAWB - GLOBAL FORUM online edition that took place in 2011 in order to seek and understand if this format can be configured as a social innovation and as a possible example in the era of cooperation and collective generosity. We decided to conduct a qualitative research methodology using a case study with a participative observation, since the study’s author worked directly in the process of designing and implementing the conference. We sought to understand how technology could help in the establishment of social networks, which in this case, were mobilized to disseminate and share all the knowledge that was being exposed. The research also attempts to verity the power of social networks, considering the fact that when the subject makes sense for people, they embrace and engage on it through twitter and facebook. To understand the conference itself, we must understand the globalized world, social networks, the use of social media, the concept of social innovation and the network society and, therefore, the authors used as Franco (2008), Giardelli (2011), Castels (1999), Canclini (2005) and others cited. Since the studies of social networks and the issues are relatively new...

‣ Números primos: os átomos dos números

Rigoti, Marcio Dominicali
Fonte: Curitiba Publicador: Curitiba
Tipo: Dissertação de Mestrado
Português
This work presents a study about Prime Numbers, since basic results, like the prime number’s infinity and the Arithmetic Fundamental Theorem, to more sophisticated results, as Wilson’s Theorem and it’s consequent Prime generating function. Further the theoretical results we present a prime’s geometric interpretation. This interpretation is applied to illustrate some results related to primes, which appears in basic education. Activities about this geometric interpretation are suggested in the final chapter.; CAPES; Este trabalho apresenta um estudo sobre os Números Primos que passa por resultados básicos, como a infinitude dos números primos e o Teorema Fundamental da Aritmética, e resultados mais sofisticados, como o Teorema de Wilson e a consequente função geradora de primos. Além dos resultados teóricos apresenta-se uma interpretação geométrica para os números primos. Essa interpretação e aplicada na ilustração de alguns dos resultados relacionados a primos abordados no ensino básico. Atividades envolvendo a interpretação geométrica apresentada são sugeridas no capítulo final.

‣ O gritante silêncio em uma nota de rodapé: gênero nas dissertações e teses sobre PROEJA no Estado do Paraná

Freitas, Lucas Bueno de
Fonte: Curitiba Publicador: Curitiba
Tipo: Dissertação de Mestrado
Português
This work aims to analyze the not told about the issues of gender in theses and dissertations produced by the the Interinstitutional Group Demands and Possibilities of PROEJA in Paraná. The methodology used to develop the study was analytical research, bibliographical, and dissertations and theses as objects of analysis. At first we present a theoretical overview of gender issues, education and work, bases for the research. Subsequently we conducted a short state of the art about young and adult education and, more specifically, PROEJA, between the years 2006 and 2012 in the thesis database Capes. From the result we seek from these works, dissertations and theses that specifically address the gender issues. Then we perform the same process at the state level, specifically in works produced in the Interinstitutional Group Demands and Possibilities of PROEJA in Paraná, a group created from issuance to financing linked to the MEC/SETEC, focus chosen to undertake our discussion. After reading the 12 dissertations and the thesis, we selected four themes common in the searches to discuss the gender theories: (a) the admission of students in PROEJA, (b) avoidance, (c) teachers and (d) language used by the researcher and his/her interviewees. As a result...

‣ Mapeamento de competências com base no planejamento estratégico das organizações: proposta de metodologia

Mussi, Ana Paula Toledo Machado
Fonte: Curitiba Publicador: Curitiba
Tipo: Dissertação de Mestrado
Português
In a globalized and highly competitive environment, the definition of strategies becomes an indispensable element to the success of organizations. Strategic management presents more necessary the greater the complexity of decisions that need to be taken. The management and strategic planning are intimately related to the competency management, given that the achievement of the tasks described in these plans is directly related to human resources capacity. Thus, for a company to succeed, it is necessary that human resources and strategic planning to walk in the same direction. The survey, in its conceptual part, presents concepts of competences and their mapping and strategic planning. Field work begins with a survey of competences and strategic knowledge to organizations through reading their maps / strategic planning and aims to present an alternative that allows the construction of a model of mapping of individual competences to meet the strategic objectives of the organizations. This research is characterized as action research and the field served were the entities that make up the Federation of Industries of Paraná - FIEP, namely SESI, SENAI, IEL and FIEP.; Em um ambiente globalizado e altamente competitivo, a definição de estratégias se torna um elemento indispensável ao sucesso das organizações. A gestão estratégica apresenta-se tão mais necessária quanto maior seja a complexidade das decisões que necessitam ser tomadas. A gestão e o planejamento estratégico apresentam íntima relação com a gestão por competências...

‣ O profissional psicólogo na área do trabalho: o trabalho prescrito e o trabalho real

Souza, Regiane Cristina de; Walter, Bruno Eduardo Procopiuk
Fonte: Congresso Internacional de Psicologia; Campo Mourao Publicador: Congresso Internacional de Psicologia; Campo Mourao
Tipo: Conferência ou Objeto de Conferência
Português

‣ Trabalho, sofrimento e reconhecimento: a primazia do outro

Walter, Bruno Eduardo Procopiuk; Souza, Regiane Cristina de
Fonte: Encontro Brasileiro de Psicanálise e Sedução Generalizada; Campo Mourao Publicador: Encontro Brasileiro de Psicanálise e Sedução Generalizada; Campo Mourao
Tipo: Conferência ou Objeto de Conferência
Português
The centrality of work in relation to identity and mental health formation is a thesis made by Dejours. The generation of suffering depends entirely on the kind of work we do, which is responsible for aggravating or changing this situation. According to the author, working necessarily implies having an unpleasant emotional experience, since it goes from reality - the real - and is always resistant to technique, knowledge and symbolization. Suffering at work may or may not be linked to suffering coming out of the private or family sphere. When there is a link and the employment situation allows for sublimation – as a socially valued activity – it is possible to give work and suffering authentic meaning, transforming it into a pleasing and structuring experience. On the other hand, when the work organization is strict, not allowing for free space to change the task, and there is no recognition dynamics, it can lead the subject to suffering from psychic and somatic decompensation. It is important to highlight that the emotional distress, as the result of the encounter with the real, is not only a passive state of mind, but lies at the origin of the intelligence that sets out in search of the world in order to challenge, transform...

‣ Análise da ocorrência dos pronomes demonstrativos variáveis no “Orto do Esposo”

Mamus, Priscilla Teixeira
Fonte: Celli: Colóquio de Estudos Linguísticos e Literários; Campo Mourao Publicador: Celli: Colóquio de Estudos Linguísticos e Literários; Campo Mourao
Tipo: Conferência ou Objeto de Conferência
Português
5000

‣ Um método para escalonar sistemas de equações lineares usando somente determinante de ordem 2

Lobeiro, Adilandri Mercio; Gramani, Liliana Madalena
Fonte: Revista Ciências Exatas e Naturais; Campo Mourao; Curitiba Publicador: Revista Ciências Exatas e Naturais; Campo Mourao; Curitiba
Tipo: Artigo de Revista Científica
Português
This paper proposes a method for simplification of the traditional model of scheduling systems of m equations in n unknowns, using only determinant of order two. The proposed method is applied and developed in a sequence of systems of linear equations emphasizing its simplicity of use.; Este artigo propõe um método para simplificação do modelo tradicional do escalonamento de sistemas de m equações e n incógnitas, usando somente determinante de ordem dois. O método proposto é aplicado e desenvolvido em uma sequência de sistemas de equações lineares destacando a sua simplicidade de utilização.

‣ Experimentos sobre leis de conservação para o ensino de física no ensino médio baseados em tecnologias livres

Meucci, Ricardo Dalke
Fonte: Curitiba Publicador: Curitiba
Tipo: Dissertação de Mestrado
Português
This research investigates the possible use of Information Technology and Communication, based on open technologies and the study of conservation laws in secondary education, providing meaningful learning, using Ausubel as reference. Four activities were executed using the Video Review technique, and performed by students on second grade of high school at Military Police of Paraná High School during the year of 2013. Throughout the development of the activities, it was clearly demonstrated a major evolution of the quality of student’s responses, which can be determined by the extent of the responses, the improvement on the vocabulary and the construction of arguments to support a certain point of view. As a result, the proposed activities showed evidence of meaningful learning. These activities also showed the possibility of extending the physics lessons beyond technical skills and reaching other areas of learning, such as the skills and abilities required by ESMS, which goes beyond a vision based simply on the subject content.; Esta pesquisa verifica a possibilidade de uso das Tecnologias da Informação e Comunicação, baseados em tecnologias livres, no estudo das leis de conservação no ensino médio, de proporcionar aprendizagem significativa...

‣ A utilização de jogos didáticos em novos segmentos da educação: a prática pedagógica do professor no ensino das ciências no atendimento pedagógico domiciliar

Silva, Margarete Virgínia Gonçalves
Fonte: Curitiba Publicador: Curitiba
Tipo: Dissertação de Mestrado
Português
This research is the result of a study conducted with teachers Pedagogical Household Care in Curitiba - PR and conceptions about the use of educational games in teaching and learning of scientific disciplines of science and biology, physics, mathematics and chemistry concepts. Introduces the concepts of Inclusive Education and Special highlighting the concept of Hospital and Home Teaching Service. Also highlights the strategy of using educational games as a contributing factor for the development of cognitive skills and self-esteem seriously compromised because of the student served by this program the Department of Education of the State of Paraná disease. The games were selected on the internet of which had already been tested and results have already registered. The production was handmade. Semi- structured questions were used by a questionnaire and subsequent interviews with the teachers of the DPA for data collection. The methodology used for the data analysis was a case study with qualitative approach. . According to the interviewed teachers, educational games confirmed to be excellent strategy for teaching and learning enriching classes and giving students the opportunity to acquire the knowledge of light and fun way.; Esta pesquisa resulta do estudo realizado com professores do Atendimento Pedagógico Domiciliar na cidade de Curitiba - PR e suas concepções quanto a utilização de jogos didáticos no ensino e aprendizagem de conceitos científicos das disciplinas de Ciências e Biologia...

‣ Avaliação da dose em pacientes pediátricos submetidos a exame de tomografia computadorizada

Porto, Lorena Elaine
Fonte: Curitiba Publicador: Curitiba
Tipo: Tese de Doutorado
Português
The computed tomography (CT) dosimetry involves measurements of specific quantities of CT, which are part of CT quality control procedures, as well as calculation of absorbed and effective doses to a patient submitted to CT examinations. Since CT uses ionizing radiation, it should be considered that a precise balance between risks and benefits must be achieved in order to justify the adoption of such technique. Radiation protection of patients undergoing radiological exams is established based on the justification and optimization principles. Nowadays, it is important to know the dose radiation levels to which a patient is exposed during a tomographic procedure. Those are given by the estimation of specific dosimetric quantities called the computed tomography kerma index in air, C100,air, the weighted computed tomography kerma index Cw, kerma length product, PKL,CT and then the levels of effective dose and risk to the computerized CT scan study of skull, thorax and abdomen with a multiple scanning. The values obtained were compared with those obtained by computer simulation using Monte Carlo method. The protection quantities organ absorbed dose, effective dose and risk for comparison with the reference dose level established by the European Community. Using computational simulation program of the Dosecal X_CT and the ICRP 103 Protocol...