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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.
151

Matériaux locaux et innovation dans les métiers d'art-isanat en Tunisie / Local materials and innovation in craft trades of "art-isanat" in Tunisia

Layeb, Mohamed Salah 29 September 2018 (has links)
La présente thèse, relative aux matériaux locaux et innovation dans les métiers d’"art-isanat" en Tunisie, vise, dans un premier temps, l'étude des ambiguïtés définitionnelles liées au métiers d’art avec toutes leurs déclinaisons dans le contexte socio-économique et culturel tunisien. Ces métiers seront comparés avec ceux de la France, pays partenaire de la Tunisie,pour en tirer les points de similitudes et de différences pour faire ressortir les principaux moteurs d'expansion. Dans un second temps, notre recherche se tourne vers l’établissement d’un bilan des connaissances des matériaux locaux répartis par régions tunisiennes. La poterie/céramique artisanale et la bijouterie ont constitué les deux créneaux majeurs de notre ensemble d’études. Des argiles locales et des pigments de la Tunisie utilisés ou pas par les artisans (es) dans les métiers liés à la poterie artisanale ont fait l’objet d'une caractérisation scientifique (minéralogique, chimique et géotechnique), réalisée dans des laboratoires spécialisés. Cela a permis d’améliorer les compositions des pâtes d'argiles et de découvrir des couleurs naturelles authentiques pouvant constituer un vecteur d'innovation. D’autres matériaux locaux, comme le quartz fumé bi-pyramidé pour la bijouterie, peuvent constituer un créneau valide et important pour la promotion des métiers d’artisanat en Tunisie. Cette recherche est basée essentiellement sur des analyses scientifiques et des réflexions épistémologiques et s’intègre principalement dans le cadre de la recherche en Design. / The present thesis, relating to local materials and innovation in the craft trades of “art-isanat”in Tunisia, aims, initially, at studying the definitional ambiguities related to craft trades with all their variations in the Tunisian socio-economic and cultural context. These trades will becompared with those of France, Tunisia's partner country, to draw points of similarities and differences to highlight the main drivers of expansion. In a second stage, our research isaimed at drawing up an assessment of the knowledge of local materials distributed byTunisian regions. Artisanal pottery/ceramics and jewellery were the two major niches of ourset of studies. Local clays and pigments from Tunisia used or not by craftsmen in tradesrelated to artisanal pottery have been scientific characterization (mineralogical, chemical and geotechnical), carried out in specialized laboratories. This has allowed us to improve the composition of the clay pastes and discover authentic natural colors that could be a vector ofinnovation. Other local materials, such as bi-pyramid smoked quartz for jewelers, can constitute a valid and important niche for the promotion of crafts in Tunisia. This research isessentially based on scientific analyses and epistemological reflections and is mainly part of the design research.
152

Développement de méthodologies pour l'α,β-fonctionnalisation d 'amines : Synthèse et application d'organocatalyseurs rigides à squelette spirobiindane / Development of methodologies toward amine’s α,β-functionalization : Synthesis and application of rigid spirobiindane organocatalysts

Bekkaye, Mathieu 11 July 2014 (has links)
Cette thèse se divise en trois parties. La première partie concerne nos approches vers la fonctionnalisation régiosélective d’imines, générées in situ dans le milieu réactionnel. En particulier, nous avons développé une méthode de synthèse d’α-amidosulfures qui furent ensuite utilisés comme plateforme pour accéder à des α-aryles amines aliphatiques par réaction de Friedel-Crafts déclenchée par du NIS. La seconde partie de ce travail rapporte la synthèse de spirobiindane rigides optiquement actifs, que nous avons ensuite utilisés comme plateforme pour former des organocatalyseurs de type acides phosphoriques. Ces derniers furent ensuite exploités dans le développement d’une réaction de cycloaddition [3+2] -optionnellement amorcée par du PIDA- donnant accès à des 2,3-dihydrobenzofuranes optiquement actifs. Enfin, dans une dernière partie, deux séquences réactionnelles furent développées, donnant accès à des iodoarènes iodés : les BINIs et SPINIs ortho-diarylés. Ces structures furent engagées en organocatalyse, et ont permis d’apporter une approche rationnelle aux mécanismes d’induction asymétrique impliquant des espèces iodés hypervalentes. / This thesis is divided in three parts. The first part deals with our approaches toward regioselective functionalization of in situ generated imines. In particular, we had developed a synthesis of α-amidosulfides, which were used as substrates to access aliphatics α-aryles amines through a NIS-triggered Friedel-Crafts reaction. Second part of this work describe the synthesis of spirobiindane-based organocatalysts, which were used in a [3+2] cycloaddition - optionally triggered with PIDA - leading to optically actives 2,3-dihydrobenzofurans. Finally, two synthetic pathways were developed to form new class of aryliodides: diaryls BINIs & SPINIs. Those scaffolds were exploited to bring a rational explanation of chirality transfer in reactions using hypervalent iodine species.
153

Procédés catalytiques et outils millifluidiques : applications aux réactions de Friedel-Crafts et d'oxydation. / Catalytic processes and millifluidic tools : application to Friedel-Crafts and oxidation reactions

Olivon, Kevin 29 September 2014 (has links)
La recherche de nouvelles méthodes pour l’acquisition de données physiques et chimiques de réactions en limitant les effet néfastes sur l’Homme est d’une grande importance pour la chimie moderne. L’utilisation de nouveaux outils miniaturisés permet de limiter les quantités de produits chimiques utilisées tout en augmentant la productivité de la recherche. En effet, l’étude de différents paramètres contrôlés simultanément permet d’augmenter le nombre d’expériences pour un temps donné. Malgré tout, cette étape doit être réalisée après détermination au préalable des paramètres clés de la réaction par l’utilisation d’outils haut débit tels que la robotique. Cesdifférents outils sont utilisés pour l’optimisation et la recherche d’une nouvelle voie de synthèse d’une réaction d’intérêt industriel.De plus, pour répondre à l’intérêt de la catalyse hétérogène dans l’industrie pour la séparation facilitée et le recyclage de ces catalyseurs, nous avons développé deux outils miniaturisés. Cesderniers permettent l’étude et l’acquisition de données de réactions chimiques catalysées par des solides. Le développement s’est inscrit en deux étapes : une caractérisation physique des outils puis l’étude d’une réaction modèle industrielle, l’acylation de l’anisole par des catalyseurs de type zéolite. / The search for new methods for the acquisition of physical and chemical reactions by limiting the effect on humans is of great importance for modern chemistry. The use of new miniaturized tools can limit the quantities of chemicals used while increasing research productivity. Indeed, the study of the various parameters monitored simultaneously increases the number of experimentsfor a given time. Nevertheless, this step must be performed after prior determination ofthe key parameters of the reaction by the use of high flow tools such as robotics. These tools are used for optimization and the search for new synthetic pathway of a reaction of industrial interest. In addition, to meet the interests of heterogeneous catalysis in industry for easier separation and recycling of these catalysts, we have developed two miniaturized tools. These allow the study and data acquisition of chemical reactions catalyzed by solid. Development was registeredin two stages : a physical characterization tools and the study of an industrial model reaction, the acylation of anisole with zeolite catalysts.
154

The furniture tourist : escaping the habitue : an exegesis presented in partial fulfillment of the requirements for a degree of Masters of Design at Massey University, Wellington, New Zealand

Apthorp, Jane Frances January 2008 (has links)
Kenneth Bayes describes two ways in which we move through space. The first as a ‘tourist’ and the second as the ‘habitué’. The tourist is an “exploratory through an unknown environment” (Porter, 1997, p. 44) - which is juxtaposed against the habitué, who is “the habitual through a known environment” (Porter, 1997, p. 44). Each concept is the other’s polar opposite. The habitué is bound by routine, while the tourist is active and engaging in their environment, discovering new possibilities and exciting alternatives. The tourist looks upon their environments with fresh eyes. They are open, receptive and able to imagine possibilities where forms in rooms bend, waver and swell. Imagining tells stories which provoke and expand our thoughts. It allows one to escape preconceptions about the nominal nature of objects and our relationship with them. This research explores these characters, the habitué and the tourist, in relation to furniture and its arrangement within the interior. It investigates how the habitué may over time become the tourist in their own familiar environment. I am the tourist within this research who activates drawing, making, writing and photography as productive processes of imagining exciting alternatives for furniture. Through my work I seek to trigger, for the habitué, their imagination by allowing them to enter into mine through photography, expanding what they originally perceived of furniture.
155

Being storied; a lived experience in time : an exegesis presented in partial fulfilment of the requirements for the degree of Master of Fine Arts at Massey University, Wellington, New Zealand

Day, Catherine January 2009 (has links)
Being storied; a lived experience of time discusses selected aspects of the research and studio practice undertaken in the course of the year 2008. Central to the process has been attending to the mundane acts of everyday life in the rural environment in which I live. It discusses actions such as walking, listening, collecting and documenting as well as experiments with a waste material, used baling plastic that is installed in various ways into the landscape. Parallel to this are investigations with sound and text, which have drawn on my varied musical background. There is an exploration of time - the idea of durée, human experience of time, quality of attention through intense focus, and memory as it accumulates over time. Art of the everyday has also been a key area of research. Life changing events have occurred during the course of the year. The death of parents has substantially influenced the work. The practice described is multi-faceted, involving the use of text, sound, photography and film.
156

Kaimo amatų plėtros tendencijos ir poveikis kaimo turizmo verslo konkurencingumui Klaipėdos apskrityje / Rural craft development trends and impacts on the rural tourism business competitiveness of Klaipeda county

Vagonis, Zigmantas 08 June 2009 (has links)
Tyrimo objektas – Klaipėdos apskrities kaimo turizmo ir amatų būklė Darbo tikslas – Nustatyti kaimo amatų ir kaimo turizmo sąveiką Klaipėdos apskrityje, bei pateikti pasiūlymus jų panaudojimui kaimo turizmo konkurencingumui didinti Uždaviniai: 1. Išanalizuoti kaimo turizmo ir amatų raidos tendencijas bei jų specifiką. 2. Išnagrinėti gamtinių, kultūrinių ir žmogiškųjų išteklių poveikį kaimo turizmo ir amatų plėtrai. 3. Parengti kaimo turizmo ir amatų būklės bei jų sąveikos galimybių Klaipėdos apskrityje tyrimo metodiką. 4. Įvertinti kaimo turizmo ir tradicinių amatų situaciją Klaipėdos apskrityje ir jų plėtros galimybes. 5. Pateikti kaimo turizmo ir amatų tarpusavyje efektyvesnio plėtojimo kryptis. Tyrimo metodai – mokslinės literatūros, teisinių aktų ir dokumentų ir statistinių dokumentų analizė ir sintezė, anketinė apklausa, duomenų palyginimas ir grafinis vaizdavimas. Tyrimo rezultatai: • Pirmoje darbo dalyje išnagrinėtos kaimo turizmo ir amatų raidos tendencijos, taip pat nagrinėta įvairių autorių nuomonė. Buvo analizuojami keliavimo motyvai, būtent kas lemia poilsiautojų pasirinkimą rinktis vienokią ar kitokią poilsio rūšį. Taip pat buvo išnagrinėti teisiniai aktai ir dokumentai reglamentuojantys kaimo amatus ir turizmą ir nustatyta, jog norint užtikrinti stabilų kaimo turizmo sodybų skaičiaus augimą reikia supaprastinti teisinę įstatyminę bazę. Taipogi buvo atlikta Europos Sąjungos teikiamos paramos ir jos naudos kaimo amatams ir turizmui studija • Antroje dalyje buvo... [toliau žr. visą tekstą] / The object of investigation - Condition of Klaipeda County Rural Tourism and Crafts. The goal - Set in rural crafts and rural tourism interaction Klaipeda county, and to submit proposals for use to increase the competitiveness of rural tourism. Objectives: 1. To analyze the rural tourism and craft development trends and their specifics. 2. To examine the natural, cultural and human resources impact to rural tourism and craft development. 3. Develop a survey methodology of rural tourism and crafts condition and their interaction in Klaipėda county. 4. Rate of situation and development potential of rural tourism and traditional crafts of Klaipeda county. 5. Provide more effective development policies between rural tourism and crafts. Methods of research - the scientific literature, legal acts and instruments, statistical analysis and synthesis of documents, questionnaire survey, data comparison and graphical representation. The results of the study: • In first part the work of rural tourism and crafts trend, and also the various authors opinion was examined. Travel motives, namely, what determines the choice for holidaymakers to choose some other type of recreation were analyzed. Also the legal acts and documents of rural crafts and tourism were consider, and was found that in order to ensure a stable rural tourism growth the regulatory legislation should simplified. Study of the support of the European Union and its benefits for rural tourism and crafts has been done. •... [to full text]
157

Étude mécanistique de réarrangement de Stevens à partir de substrats de type azocine ou isopavine

Talbot, Clément January 2004 (has links)
Mémoire numérisé par la Division de la gestion de documents et des archives de l'Université de Montréal
158

Desirable impact : an exploration of how design for desirability can enhance a forecast snowboarding safety product

Hansen, Lans January 2010 (has links)
With origins in skateboard and surfing culture, snowboarding has grown to become a mainstream recreational and professional sport, officially recognized in the Olympic Games. This popularity can be attributed to several factors, including the sub-culture of rebellion and self-expression it embodies and the daring, dynamic aerial maneuvers and stunts often portrayed in the media. However, the sport also exposes participants to a well-documented injury pattern, with injuries rates typically twice as frequent as those seen in skiing. While a number of studies have shown existing snowboarding safety products reduce the risk of injury, these readily available products are not widely used among participants who view them as “uncool” and “unnecessary”. Exploring how affective features and attributes can improve the desirability of a forecast snowboarding personal protective equipment (PPE) product, this thesis proposes that a primary requirement for these products must be desirability - to make attractive, to create a positive impression, to strengthen ones identity and engender appreciation. Responding to these emotional needs, this thesis presents a proposal for a product designed to enhance user-experience, challenging the current philosophy of safety products and their ‘uncool’ perceptions.
159

Drawing from experience : visual modality in historic narrative illustration : a thesis presented in partial fulfilment of the requirements for the degree of Master of Design, Massey University, Institute of Communication Design, College of Creative Arts, Wellington, New Zealand

Hunkin, Mathew January 2010 (has links)
This research investigates critical methods for approaching aesthetic design decisions in illustration. As a method of communication illustration qualifies its subjects through aesthetic choices, or modalities. The qualifying nature of these modalities can affect communication in an image and this research seeks an explicit understanding of how this communication occurs. This practice-based research project employs two aesthetic extremes, line and tone, in the creation of four historic visual narratives designed to fill visual gaps in the history of 1 Commando Fiji Guerillas. Line and tone are tendered as a means of visually negotiating the informing records of the Fiji Commando experience, records characterised by both conflict and absence. Can these disparate, conflicting, yet necessary records of experience be visually acknowledged in an illustrated expansion of the Fiji Commando's visual history? This position serves as the point of departure for research. An understanding of the communicative properties of line and tone is followed by investigation into their relationship to the propositions they represent, with initial research suggesting that modalities reflect the social contexts from which they encode. This relationship implied a means to negotiate the historic records necessary in a contemporary visual articulation of the Fiji Commando experience through the strategic use of aesthetic modalities to acknowledge the nature of informing source material. This practice-based approach to research allowed the consolidation of both the possible and the probable in the creation of a new visual, historic text, while revealing analytical approaches to aesthetic choice.
160

Estudos sobre a utilização do pentacloreto de Nióbio, como ácido de Lewis, em reações de acilação de Friedel-Crafts, visando à síntese de compostos com potencial aplicação como corantes sensibilizadores /

Silva, Bruno Henrique Sacoman Torquato da. January 2018 (has links)
Orientador: Luiz Carlos da Silva Filho / Resumo: A reação de acilação de Friedel-Crafts é uma das mais importantes reações de formação de ligações carbono-carbono em compostos aromáticos. As reações de acilação de Friedel-Crafts ocorrem basicamente por meio da reação entre compostos aromáticos com haletos de acila ou anidridos na presença de um ácido de Lewis. Assim, neste trabalho foi estudado o uso do pentacloreto de nióbio como ácido de Lewis nas reações de acilação de Friedel-Crafts visando à síntese de corantes sensibilizadores. Os derivados de fluoresceína foram sintetizados a partir de derivados fenólicos e derivados de anidrido, na presença de NbCl5 e sob aquecimento. Os produtos de interesse foram obtidos com rendimentos de 54 a 90% e em curtos tempos reacionais que variaram de 50 a 200 minutos. As fluoresceínas apresentaram absorção e emissão de luz dentro do comprimento de onda do visível, com alta intensidade e altos valores de rendimento quântico de fluorescência (0,60 a 0,93) quando dissolvidos em soluções alcalinas. Os derivados de fluoresceínas foram aplicados na confecção de células solares de Gratzel apresentando eficiências de conversão que variaram de 0,11 a 0,23%. Também foi estudado a aplicação dos derivados de fluoresceínas como corantes iniciadores em reações de fotopolimerização de resinas de dimetacrilato. Estas resinas tem sido largamente utilizadas na odontologia, devido as suas propriedades como baixa toxicidade, baixa solubilidade em água e alta resistência mecânica. As fluoresceínas promoveram... (Resumo completo, clicar acesso eletrônico abaixo) / Abstract: The Friedel-Crafts acylation reaction is one of the most important reactions for the formation of carbon-carbon bonds. The Fridel-Crafts acylation reaction occurs basically by a reaction between aromatic compounds with acyl halides or anhydrides in the presence of a Lewis acid. Thus, in this work it was studied the use of niobium pentachloride as Lewis acid in Friedel-Crafts acylation reaction, aiming the synthesis of sensitizing dyes. The fluorescein derivatives were synthesized from phenolic derivatives and anhydride derivatives, in the presence of NbCl5 and under heating. The products of interest where obtained in yields of 54 to 90% and in short reaction times ranging from 50 to 200 minutes. The fluorescein derivatives presented absorption and emission within the range of visible and with high intensity and high fluorescence quantum yield (0,60 to 0,93) when dissolved in alkaline pH. Due to these good results obtained in the photophysical study, the fluorescein derivatives were applied in Gratzel solar cells, presenting convertion efficiencies that ranging from 0.11 to 0.23%. It has also been studied the application of fluorescein derivatives as initiator dyes in photopolymerization reactions of dimethacrylated resins. This resins have been widely used in dentistry, due this properties as, low toxicity, low solubility in water and high mechanical resistance. The fluoresceins promoted the photopolymerization of dimethacrylated resins with conversion values ranging from 1.2... (Complete abstract click electronic access below) / Doutor

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