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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

Direcionadores e inibidores para o consumo colaborativo no cen?rio brasileiro

Freitas, Cl?udio Kury 07 March 2017 (has links)
Submitted by Caroline Xavier (caroline.xavier@pucrs.br) on 2017-06-23T15:03:24Z No. of bitstreams: 1 DIS_CLAUDIO_KURY_FREITAS_COMPLETO.pdf: 3731237 bytes, checksum: 6c9142038f4fb9168dfb9821bae2be1f (MD5) / Made available in DSpace on 2017-06-23T15:03:24Z (GMT). No. of bitstreams: 1 DIS_CLAUDIO_KURY_FREITAS_COMPLETO.pdf: 3731237 bytes, checksum: 6c9142038f4fb9168dfb9821bae2be1f (MD5) Previous issue date: 2017-03-07 / The act of sharing is as old as the history of humankind. For many years sharing is being studied as a fundamental conduct in the consumption behavior. Nowadays society is experimenting changes provoked by the sharing economy and collaborative consumption. The social media that showed up in the later decade changed the routine of the society and new consuming ways using these virtual platforms invaded the market so that people can buy everything via Internet. Despite the shock caused by this new reality for the worldwide economies, the sharing economy and the collaborative consumption are just in its embryionic state. The studies related to these themes are still scarce not only in the market but in the academy too, exception for specific works through case studies or trying to better understand such a business platform born in this digital era. Thus for the experts perceptions searching about what can make easy or difficult this growing trend becomes relevant also in the Brazilian scenario. Given the above considerations this research has as its objective to analyze the experts perceptions about key drivers and inhibitors in the collaborative consumption in the Brazilian scenario. It was applied the Delphi method and its rankings approach to reach a common understanding among entrepreneurs of collaborative social projects, entrepreneurs of digital platforms and researchers/ academics. As a result of this study it was checked the main key drivers and inhibitors for the collaborative consumption in the Brazilian scenario, regarding sociocultural, technological, economic and political-legal perspectives. It was possible to relate perspectives of drives and inhibitors for the Brazilian collaborative consumption. Also, the research provided a consistent framework to support analyses and future studies about the construct, not well explored yet. Beyond the results, the study contributed for the academy giving a broad vision and knowledge about the literature, recent globally, specially in the Brazilian scenario; contributed with different sectors from the academy, beyond Business Administration; and expanded the knowledge about collaborative consumption from empiric evidences brought by specialists. As contribution for the business, the work increased the comprehension about the collaborative consumption phenomena, and the management vision about future perspectives. / O ato de compartilhar ? t?o antigo quanto a hist?ria da humanidade. H? alguns anos o compartilhamento vem sendo estudado como uma conduta fundamental no comportamento de consumo. Nos dias atuais a sociedade vem experimentando as mudan?as provocadas pela economia compartilhada e o consumo colaborativo. As m?dias sociais que emergiram na d?cada anterior transformaram a rotina da sociedade e novas maneiras de consumir utilizando essas plataformas digitais tomaram o mercado, de tal forma que hoje se adquire de tudo via Internet. Apesar do choque causado por essa nova realidade nas economias pelo mundo, a economia do compartilhamento e o consumo colaborativo ainda est?o em fase embrion?ria. Os estudos relativos a esses temas ainda s?o escassos, tanto de mercado quanto na academia, excetuando-se por trabalhos pontuais, atrav?s de estudos de caso ou tentando entender melhor determinada plataforma de neg?cios, nascida nesta era digital. Portanto, buscar a percep??o de especialistas sobre o que pode direcionar ou inibir este crescimento se torna relevante, inclusive no cen?rio brasileiro. Diante do exposto, esta pesquisa tem como objetivo analisar a percep??o de especialistas sobre fatores direcionadores e inibidores para o consumo colaborativo no cen?rio brasileiro. Em busca deste objetivo, foi utilizado o m?todo de pesquisa Delphi e sua abordagem de rankings em busca de consenso de opini?es extra?das de empreendedores de projetos sociais colaborativos, empreendedores de plataformas digitais e pesquisadores/acad?micos. Como resultado deste estudo, foram verificados os principais direcionadores e inibidores para o consumo colaborativo no cen?rio brasileiro, impactando diversas perspectivas como tecnologia, economia, pol?tico-legal e sociocultural. Foi poss?vel ainda relacionar perspectivas direcionadoras e inibidoras para o consumo colaborativo brasileiro. Obteve-se um framework de pesquisa consistente como suporte para an?lises e pesquisas futuras, sobre este constructo ainda pouco explorado. Al?m dos resultados, o estudo contribuiu para a academia ao ampliar o conhecimento em uma literatura recente globalmente, e especialmente no cen?rio brasileiro; contribuir com diferentes setores da academia, al?m da Administra??o; e expandir o conhecimento sobre o consumo colaborativo a partir do conhecimento e de evid?ncias emp?ricas trazidas por especialistas. Como contribui??es gerenciais, o trabalho ampliou a compreens?o sobre o fen?meno do consumo colaborativo, bem como a vis?o empresarial sobre perspectivas futuras.
2

Prospec??o tecnol?gica de c?lulas fotovoltaicas para energia solar

Sampaio, Priscila Gon?alves Vasconcelos 31 July 2015 (has links)
Submitted by Automa??o e Estat?stica (sst@bczm.ufrn.br) on 2016-04-25T21:18:31Z No. of bitstreams: 1 PriscilaGoncalvesVasconcelosSampaio_DISSERT.pdf: 3304012 bytes, checksum: 80d7aafefa3834916ac5c98b674556d8 (MD5) / Approved for entry into archive by Arlan Eloi Leite Silva (eloihistoriador@yahoo.com.br) on 2016-04-27T20:10:10Z (GMT) No. of bitstreams: 1 PriscilaGoncalvesVasconcelosSampaio_DISSERT.pdf: 3304012 bytes, checksum: 80d7aafefa3834916ac5c98b674556d8 (MD5) / Made available in DSpace on 2016-04-27T20:10:10Z (GMT). No. of bitstreams: 1 PriscilaGoncalvesVasconcelosSampaio_DISSERT.pdf: 3304012 bytes, checksum: 80d7aafefa3834916ac5c98b674556d8 (MD5) Previous issue date: 2015-07-31 / A energia solar apresenta-se como uma excelente alternativa para a gera??o de energia limpa e renov?vel. Esta disserta??o tem como objetivo identificar as tend?ncias tecnol?gicas das c?lulas fotovoltaicas para energia solar. A pesquisa caracteriza-se, em rela??o ? natureza, como sendo aplicada; em rela??o ? abordagem, ? quali-quantitativa; no que tange aos objetivos, ? explorat?ria e descritiva; concernente ao procedimento metodol?gico ? considerada uma pesquisa bibliogr?fica com um estudo de caso caso no setor de energia solar fotovoltaica. O desenvolvimento desta pesquisa iniciou-se com uma revis?o bibliogr?fica sobre energia solar fotovoltaica e prospec??o tecnol?gica. Em seguida, conduziu-se o mapeamento tecnol?gico das c?lulas fotovoltaicas para energia solar por meio da an?lise de artigos e de patentes. Posteriormente foi realizada a prospec??o tecnol?gica das c?lulas fotovoltaicas para energia solar atrav?s do M?todo Delphi, bem como a constru??o do mapa atual e futuro das tecnologias das c?lulas fotovoltaicas, para os cen?rios atual, ano 2020 e ano 2025. Os resultados desta pesquisa apontam que as tecnologias consideradas maduras (sil?cio mono e multicristalino) continuar?o sendo vi?vel t?cnica-comercialmente dentro do per?odo prospectado (2020 - 2025). Outras tecnologias que atualmente s?o vi?veis (sil?cio amorfo, telureto de c?dmio e seleneto de cobre ?ndio/Cobre, ?ndio e g?lio-disseleneto), poder?o n?o apresentar esta mesma condi??o em 2025. J? as c?lulas de nanofios de sil?cio, sensibilizadas por corante e as baseadas em nanoestrutura de carbono, que nos dias atuais n?o s?o vi?vel t?cnica-comercialmente, poder?o fazer parte do mapa futuro das tecnologias fotovoltaicas para energia solar. / Solar energy presents itself as an excellent alternative for the generation of clean, renewable energy. This work aims to identify technological trends of photovoltaic cells for solar energy. The research is characterized, in relation to nature, to be applied; regarding the approach is qualitative and quantitative; with respect to the objectives, it is exploratory and descriptive; concerning the methodological procedure is considered a bibliographic research with a case study in the case of solar photovoltaic sector. The development of this research began with a literature review on photovoltaic solar energy and technology foresight. Then it led to the technology mapping of photovoltaic solar cells through the analysis of articles and patents. It was later performed the technological prospecting of photovoltaic cells for solar energy through the Delphi method, as well as the construction of the current plan and future technology of photovoltaic cells for the current scenario, 2020 and 2025. The results of this research show that the considered mature technologies (silicon mono and multicrystalline) will continue to be commercially viable within the prospected period (2020-2025). Other technologies that are currently viable (amorphous silicon, cadmium telluride and copper indium selenide / Copper indium gallium diselenide-), may not submit the same condition in 2025. Since the cells of silicon nanowires, dye-sensitized and based on carbon nanostructure, which nowadays are not commercially viable, may be part of the future map of photovoltaic technologies for solar energy.

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