Submitted by João Arlindo Santos Neto (neto.john.1@gmail.com) on 2014-10-08T16:11:16Z No. of bitstreams: 1 João dissertação.pdf: 1341430 bytes, checksum: 8637a43655be1f079d01dbcd3e8260f4 (MD5) / Approved for entry into archive by Fabrício Assumpção (fabricio@reitoria.unesp.br) on 2014-10-08T17:02:31Z (GMT) No. of bitstreams: 1 João dissertação.pdf: 1341430 bytes, checksum: 8637a43655be1f079d01dbcd3e8260f4 (MD5) / Made available in DSpace on 2014-10-08T17:02:32Z (GMT). No. of bitstreams: 1 João dissertação.pdf: 1341430 bytes, checksum: 8637a43655be1f079d01dbcd3e8260f4 (MD5) Previous issue date: 2014-04-23 / Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) / Mediação da Informação e biblioteca universitária são o norte desta pesquisa, que discute o processo da mediação e o bibliotecário em serviço. Apresenta uma discussão em relação à Mediação Implícita da Informação no âmbito de trabalho dos bibliotecários da Biblioteca Central (BC) da Universidade Estadual de Londrina (UEL). Tem como objetivo geral conhecer e analisar o discurso dos bibliotecários da BC/UEL quanto à mediação implícita da informação, e como objetivos específicos localizar a literatura científica dentro da CI documentos que abordam os seguintes termos: biblioteca universitária, mediação, mediação da informação, mediação implícita e explícita da informação, interferência e apropriação, e discuti-los; discutir o conceito de mediação da informação na literatura da área de CI; identificar qual é a relação entre mediação implícita da informação e o fazer do bibliotecário; investigar se o discurso dos bibliotecários a respeito da mediação implícita é referido a processos do ambiente de trabalho em que atuam e se faz referência ao usuário final; realizar um contraponto entre o que a literatura diz a respeito da mediação implícita e o discurso de mediação implícita no discurso dos bibliotecários; verificar se existe um consenso entre o saber dos bibliotecários pesquisados em relação ao tema e as condições de produção de discurso. Realizou-se uma pesquisa de caráter exploratório e descritivo. A pesquisa é de natureza aplicada com uma abordagem qualitativa, sendo bibliográfica de início e posteriormente valendo-se de uma coleta de dados. Utiliza a entrevista semiestruturada como instrumento de coleta de dados e como método de análise dos dados a Análise do Discurso. Como resultado apresenta: o discurso dos bibliotecário entrevistados quando ao processo e o conceito de mediação implícita em forma de quadros e citações, a posição que cada bibliotecário ocupa dentro da BC/UEL, as condições de produção em que o seu discurso é produzido e o interdiscurso desses sujeitos. Conclui-se que os bibliotecários conhecem o termo mediação da informação, mas ainda se referem a ele como “ponte”. Já o conceito de mediação implícita ainda é desconhecido por alguns, mas desperta a curiosidade entre os participantes. Os bibliotecários reconhecem que são mediadores e afirmam desempenhar suas tarefas para disponibilizar a informação e promover o acesso ao usuário. Contribui para a busca da informação por parte dos pesquisadores e profissionais interessados na área de Mediação da Informação, mas também e principalmente, quanto à Mediação Implícita da informação relacionada ao fazer do bibliotecário. / Mediation of Information and university library are the aims of this research, which discusses the process of mediation and the librarian on duty. It presents a discussion regarding Implicit Mediation of Information within the work environment of librarians at the Central Library (CL) from the State University of Londrina (UEL). Its general purpose is to understand and analyze the discourse of librarians from the CL/UEL as for the implicit mediation of information, and as specific purposes: to locate in the Information Science (IS) scientific literature, documents that discuss the following terms: university library, mediation, mediation of information, implicit and explicit mediation of information, interference and appropriation, and discuss them; discuss the concept of mediating information in the IS literature; identify what is the relationship between implicit mediation of information and the librarian performance; investigate whether the librarians’ discourse about the implicit mediation is related to processes of the work environment in which they operate and if it refers to the end user; make a counterpoint between what the literature says about the implicit mediation and the implicit mediation discourse in the librarians’ discourse; verify if there is a consensus between the knowledge of librarians surveyed on the topic and the conditions of discourse production. This is an exploratory, descriptive applied-natured research with a qualitative approach, firstly bibliographical and then making use of a data collection. It uses a semi-structured interview as a tool for data collection and the Discourse Analysis as a data analysis method. The results show: the discourse of respondent librarians concerning the process and the concept of implicit mediation in tabular form and quotations; the position that each librarian occupies within the CL/UEL; the discourse production conditions and the inter-discourse of these subjects. It concludes that librarians know the term mediation of information, but still refer to it as a "bridge"; however, the concept of implicit mediation is still unknown to some of them, but arouses curiosity among participants. Librarians recognize they are mediators and state that they perform their duties to provide information and promote access to the user. Contribute to the search for information by researchers and professionals interested in the field of Information Mediation, but especially to what the Implicit Mediation of information concerns in terms of the librarians’ work.

abstract: Origami is an art transforming a flat sheet of paper into a sculpture. Among various types of origami, the focus is on a particular class called the `Rigid Origami' ("RO"). A Rigid Origami, unlike other forms, is not intended to be folded into fancy shapes. On the contrary, an RO has a simple and a geometrically well-defined crease pattern and does not have curved/smudged faces. The folds can be carried out by a continuous motion in which, at each step, each face of the origami is completely flat. As a result, these planar faces experience very minimal strain due to loading. This property allows it to be used to fold surfaces made of rigid materials. Tapping into the geometrical properties of RO will open a new field of research with great practical utility. Analyzing each new RO pattern will require generating numerous prototypes; this is practically impossible to do, as it consumes a lot of time and material. The advantages of Finite Element Analysis/numerical modeling become very clear in this scenario. A new design concept may be modeled to determine its real world behavior under various load environments and may, therefore, be refined prior to the creation of drawings, when changes are inexpensive. Since an RO undergoes a non-local deformation when subjected to a disturbance, the usage of conventional FEA will not produce accurate results. A non-local element model was developed which can be used in conjunction with the finite element package ABAQUS, via its user-defined element (UEL). This model was tested on two RO patterns, namely Miura-Ori and Ron Resch, by carrying out basic simulations. There are many other interesting origami patterns, exhibiting different meta-material properties, yet to be explored. This Finite Element Approach equips researchers with necessary tools to study those options in great detail. / Dissertation/Thesis / M.S. Mechanical Engineering 2014

Wave propagation analysis in 1-D and 2-D composite structures is performed efficiently and accurately through the formulation of a User-Defined Element (UEL) based on the wavelet spectral finite element (WSFE) method. The WSFE method is based on the first order shear deformation theory which yields accurate results for wave motion at high frequencies. The wave equations are reduced to ordinary differential equations using Daubechies compactly supported, orthonormal, wavelet scaling functions for approximations in time and one spatial dimension. The 1-D and 2-D WSFE models are highly efficient computationally and provide a direct relationship between system input and output in the frequency domain. The UEL is formulated and implemented in Abaqus for wave propagation analysis in composite structures with complexities. Frequency domain formulation of WSFE leads to complex valued parameters, which are decoupled into real and imaginary parts and presented to Abaqus as real values. The final solution is obtained by forming a complex value using the real number solutions given by Abaqus. Several numerical examples are presented here for 1-D and 2-D composite waveguides. Wave motions predicted by the developed UEL correlate very well with Abaqus simulations using shear flexible elements. The results also show that the UEL largely retains computational efficiency of the WSFE method and extends its ability to model complex features. An enhanced cross-correlation method (ECCM) is developed in order to accurately predict damage location in plates. Three major modifications are proposed to the widely used cross-correlation method (CCM) to improve damage localization capabilities, namely actuator-sensor configuration, signal pre-processing method, and signal post-processing method. The ECCM is investigated numerically (FEM simulation) and experimentally. Experimental investigations for damage detection employ a PZT transducer as actuator and laser Doppler vibrometer as sensor. Both numerical and experimental results show that the developed method is capable of damage localization with high precision. Further, ECCM is used to detect and localize debonding in a composite material skin-stiffener joint. The UEL is used to represent the healthy case whereas the damaged case is simulated using Abaqus. It is shown that the ECCM successfully detects the location of the debond in the skin-stiffener joint.

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