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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1

Lenkiamų daugiasluoksnių konstrukcinių elementų projektavimoproceso modeliavimas / The Model for Design of Multi-layer Construction Elements Subjected by Bending

Padaigienė, Regina 13 September 2004 (has links)
Multi-layer construction elements improve technical characteristics of the product. There is exhaustive analysis of software in this work. Besides that the model for design of multi-layer construction elements subjected by bending is created in this work. The purpose of this program is calculation of stiffness and stresses for multi-layer constructions subjected by cross forces and bending moments. Modeling the design process of multi-layer construction elements is simple task that can be automatized by creation of modeling system. This program allows to calculate stiffness and strength of multi-layer construction elements subjected by cross forces and bending moments. It is possible to design various constructions of beams changing different parameters. The programme itself is simple for every student, engineer.This model can be used for scientific research, engineering calculations, laboratorial calculations. The program allows to evaluate strength of multi-layer construction element subjected by bending. The construction will not hold out external load if intensity of stresses in one layer exceeds permissible stresses of strength limit of this layer material. The report is given in such case. The distribution of calculated stresses in cross-section of multi-layer construction elements can be shown graphically. It significantly facilitate designer’s work.
2

Estetiskt moderniserad typbyggnad och dess inverkan på prefabricerad elementbyggnation / Aesthetically modernized building and its impact on prefabricated element construction

Forsén, Olivia, Östlund, Angelica January 2016 (has links)
Purpose: Since the perception of what characterizes a modern building changes with time, it’s important for companies in the housing business to be updated on how the market and customer preferences change. For companies, with long-run standardized production systems, to not lose market shares as a result of the inability to change the exterior appearance of the product a new building should be produced to meet the customers’ requirements. The aim of the study is to create an aesthetically modernized building and study how it changes the production process and affect the cost of production. Method: The methods used in the study consist of qualitative data collection in the form of in-depth analyzes of literature studies, semi-structured interviews and collection of documents. Through the use of these methods a theoretical background and empirical data have been compiled into a result. Findings: The elements that are considered as modern according to literature and customer preferences are horizontal panels, well thought out window placement with abundant glass surfaces and details that affect the aesthetic appearance. To introduce these elements to production the standard needs to be reviewed and more alternatives added. The findings show that with exterior changes, in regards to modernity, does not increase the cost of production more than that the company, for which the study was conducted, is able to keep the total price lower than competitors. Implications: Higher flexibility in the production process needs to be introduced to meet the demand of the market. The work that’s considered to be flexible today may mean standards tomorrow. The conclusion is that companies should keep their standardized production patterns with elements of flexible work. A more detailed study in a technological solution may be followed by this study. Limitations: The study has been conducted in cooperation with a company in the catalogue home industry where only exterior changes for a single storey house are taken into consideration of the study. A further limitation is that a detailed cost calculation is excluded. Keywords: standardization, prefabrication, construction elements, production systems, customer segments, modernization.
3

A gestão do desenvolvimento de produtos na indústria de materiais de construção / The management of product development in the industry of construction materials

Costa, Daniela Dutra da 14 August 2008 (has links)
A presente pesquisa procurou aperfeiçoar os conhecimentos no que se refere à gestão do desenvolvimento de novos produtos no segmento de componentes da indústria de materiais de construção. Não obstante a vasta literatura sobre a gestão do desenvolvimento de produtos, ainda existe uma lacuna no que diz respeito a este tema no setor. Procurou-se, então, identificar o grau de formalização, as etapas e as características da gestão do desenvolvimento de produtos na indústria de materiais de construção, como também as convergências e divergências entre os casos práticos e a literatura levantada. O desdobramento teórico desta pesquisa teve por base uma compilação dos principais modelos de gestão do processo de criação, como também do mapeamento do setor da indústria de materiais de construção. Por sua vez, o desenvolvimento empírico amparou-se na pesquisa qualitativa, predominantemente exploratória, baseada na técnica de estudo de casos múltiplos, contando com uma amostra de quatro empresas: Perflex, Deca, Cecrisa e Tigre. Verificou-se que existe um razoável nível de aderência entre o que preconiza a literatura e o que de fato acontece nas empresas pesquisadas, todavia, existem algumas contribuições relevantes que podem ser consideradas. Observou-se que nesse setor industrial os projetos derivativos são predominantes, com grande direcionamento para projetos topológicos; que o processo de captação de idéias realizado pela Cecrisa e pela Tigre diferenciase das demais empresas, obtendo as mais diferentes informações; que na etapa de desenvolvimento do conceito do produto a Cecrisa sobressai por inserir depoimentos de especialistas sobre a imagem da linha e a atualidade da idéia, o que poderá ser utilizado nas suas peças promocionais. Destaca-se, ainda, na montagem do produto, pois o faz em etapas iniciais, utilizando a matéria-prima e o processo produtivo finais. E a Deca, Cecrisa e Tigre realizam o lançamento interno do produto, distinguindo-se pela forma como é feito, e por não ter sido encontrado nenhum caso na literatura que inclua essa etapa no processo. É importante ressaltar a falta de aplicação de alguns critérios de Clark e Wheelwright (1993) nas empresas estudadas. Estas se diferenciam bastante das empresas utilizadas na pesquisa dos autores citados, pois são empresas pequenas com distâncias hierárquicas menores, onde acontecem constantemente reuniões formais e encontros informais para discussões e esclarecimentos sobre projetos. Com este estudo foi possível conhecer a realidade das indústrias de materiais de construção, a qual não se encontra em más condições, pelo contrário, está atualizada com os novos conceitos que envolvem o tema deste trabalho, gestão do desenvolvimento de novos produtos, com um processo e uma estrutura formal e organizada. / This study tries to improve the knowledge of the management of new products development in the industry of construction materials. Despite the vast literature on the management of the development of the products, there is still a gap in this subject related to the sector. For this reason, this study also tries to identify the degree of formalization, the phases and the characteristics of the management of the products in the industry of construction material, as well as the convergences and divergences between the practical cases and the literature studied. The empirical development of this research was based upon the compilation of the chief models of management of the process of creation, as well as the mapping of the sector of the industry of construction materials. In its turn, the empirical development had as its base a qualitative, prevailingly exploratory, research, based on the technique of study of multiple cases, counting on a sample of four companies: Perflex, Deca, Cecrisa and Tigre. It was verified that there is a reasonable degree of disparity between what the relevant literature states and what it is done in the target companies; nevertheless, there are some excellent contributions that can be taken into consideration. It was noticed that in this industrial sector derivative projects prevail, many oriented to topological projects; that the process of capture of ideas and information carried out by Cecrisa and by Tigre is different from that of the other companies, getting the most varied information; that in the face of the conceptual development of the product Cecrisa stands out for inserting testimonials of experts on the image of the line and the up-dated character of the idea, which may be used in the advertising pieces. It also stands out in the assembling of the products for doing it in the initial phases using raw material and the final productive process. Deca, Cecrisa and Tigre make the internal launching of the product, differing from others by the form of doing it, and for the effect that no similar case has been found in the relevant literature that includes this phase into the process. It is important to note the lack of application of some of Clark and Wheelwright\'s principles (1993) in the companies studied. This target companies differ largely from the companies used in the research of the authors mentioned, for they are small companies with smaller hierarchical distances, where formal and informal meetings taken place, constantly, for discussions and clarifications about projects. With this study it was possible to learn about the reality of the construction materials industries, which, by the way, is not badly off; on the contrary, it is up to date with the new concepts of the theme of this study, the management of new products development, with a process and a formal and organized structure.
4

A gestão do desenvolvimento de produtos na indústria de materiais de construção / The management of product development in the industry of construction materials

Daniela Dutra da Costa 14 August 2008 (has links)
A presente pesquisa procurou aperfeiçoar os conhecimentos no que se refere à gestão do desenvolvimento de novos produtos no segmento de componentes da indústria de materiais de construção. Não obstante a vasta literatura sobre a gestão do desenvolvimento de produtos, ainda existe uma lacuna no que diz respeito a este tema no setor. Procurou-se, então, identificar o grau de formalização, as etapas e as características da gestão do desenvolvimento de produtos na indústria de materiais de construção, como também as convergências e divergências entre os casos práticos e a literatura levantada. O desdobramento teórico desta pesquisa teve por base uma compilação dos principais modelos de gestão do processo de criação, como também do mapeamento do setor da indústria de materiais de construção. Por sua vez, o desenvolvimento empírico amparou-se na pesquisa qualitativa, predominantemente exploratória, baseada na técnica de estudo de casos múltiplos, contando com uma amostra de quatro empresas: Perflex, Deca, Cecrisa e Tigre. Verificou-se que existe um razoável nível de aderência entre o que preconiza a literatura e o que de fato acontece nas empresas pesquisadas, todavia, existem algumas contribuições relevantes que podem ser consideradas. Observou-se que nesse setor industrial os projetos derivativos são predominantes, com grande direcionamento para projetos topológicos; que o processo de captação de idéias realizado pela Cecrisa e pela Tigre diferenciase das demais empresas, obtendo as mais diferentes informações; que na etapa de desenvolvimento do conceito do produto a Cecrisa sobressai por inserir depoimentos de especialistas sobre a imagem da linha e a atualidade da idéia, o que poderá ser utilizado nas suas peças promocionais. Destaca-se, ainda, na montagem do produto, pois o faz em etapas iniciais, utilizando a matéria-prima e o processo produtivo finais. E a Deca, Cecrisa e Tigre realizam o lançamento interno do produto, distinguindo-se pela forma como é feito, e por não ter sido encontrado nenhum caso na literatura que inclua essa etapa no processo. É importante ressaltar a falta de aplicação de alguns critérios de Clark e Wheelwright (1993) nas empresas estudadas. Estas se diferenciam bastante das empresas utilizadas na pesquisa dos autores citados, pois são empresas pequenas com distâncias hierárquicas menores, onde acontecem constantemente reuniões formais e encontros informais para discussões e esclarecimentos sobre projetos. Com este estudo foi possível conhecer a realidade das indústrias de materiais de construção, a qual não se encontra em más condições, pelo contrário, está atualizada com os novos conceitos que envolvem o tema deste trabalho, gestão do desenvolvimento de novos produtos, com um processo e uma estrutura formal e organizada. / This study tries to improve the knowledge of the management of new products development in the industry of construction materials. Despite the vast literature on the management of the development of the products, there is still a gap in this subject related to the sector. For this reason, this study also tries to identify the degree of formalization, the phases and the characteristics of the management of the products in the industry of construction material, as well as the convergences and divergences between the practical cases and the literature studied. The empirical development of this research was based upon the compilation of the chief models of management of the process of creation, as well as the mapping of the sector of the industry of construction materials. In its turn, the empirical development had as its base a qualitative, prevailingly exploratory, research, based on the technique of study of multiple cases, counting on a sample of four companies: Perflex, Deca, Cecrisa and Tigre. It was verified that there is a reasonable degree of disparity between what the relevant literature states and what it is done in the target companies; nevertheless, there are some excellent contributions that can be taken into consideration. It was noticed that in this industrial sector derivative projects prevail, many oriented to topological projects; that the process of capture of ideas and information carried out by Cecrisa and by Tigre is different from that of the other companies, getting the most varied information; that in the face of the conceptual development of the product Cecrisa stands out for inserting testimonials of experts on the image of the line and the up-dated character of the idea, which may be used in the advertising pieces. It also stands out in the assembling of the products for doing it in the initial phases using raw material and the final productive process. Deca, Cecrisa and Tigre make the internal launching of the product, differing from others by the form of doing it, and for the effect that no similar case has been found in the relevant literature that includes this phase into the process. It is important to note the lack of application of some of Clark and Wheelwright\'s principles (1993) in the companies studied. This target companies differ largely from the companies used in the research of the authors mentioned, for they are small companies with smaller hierarchical distances, where formal and informal meetings taken place, constantly, for discussions and clarifications about projects. With this study it was possible to learn about the reality of the construction materials industries, which, by the way, is not badly off; on the contrary, it is up to date with the new concepts of the theme of this study, the management of new products development, with a process and a formal and organized structure.

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