Dissertations / Theses: 'Wine technology'

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Moffat, Tessa. "Sensor technology to assess grape bunch temperature variability in Vitis vinifera L. cv. Shiraz." Thesis, Stellenbosch : Stellenbosch University, 2013. http://hdl.handle.net/10019.1/80102.

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Thesis (MScAgric)--Stellenbosch University, 2013.
ENGLISH ABSTRACT: The microclimate environment around the bunch is complex. The spatial distribution of leaves as well as bunch position and morphology impact on the path of direct radiation received by the berries. Canopy microclimate is largely determined by the meteorological conditions (air temperature, solar radiation, wind speed and direction, relative humidity, and precipitation) as well as management practices (trellis/training system, canopy height, vine spacing, row orientation, canopy management practices, irrigation and soil variability and management). The fact that the grapevine continuously responds to its environment, adds to the complexity and dynamic nature of the microclimate that the bunches experience. Field studies involving the effect of the natural bunch environment (i.e. light and temperature conditions) on berry composition, are therefore a challenge, due to the difficulties in quantifying meteorological elements such as temperature and light, which can be hugely variable. There are different sensors available to assess bunch and berry temperature and it can be deployed in different ways within the grapevine canopy, but the difficulty remains in studying the variability that exists within a bunch. This study investigated the value of available sensor technology to measure bunch/berry temperature as well as the spatial and temporal variability on a bunch. Differences in temperature on an intra-berry level were assessed whereas the impact of canopy configuration and bunch orientation on the different sensor levels was also investigated. The contribution of macro- and mesoclimate on bunch and berry temperature was addressed by measuring at two locations (Robertson and Stellenbosch). The potential long term differences in temperature within a bunch with regard to thermal accumulation are discussed. Issues around sensor placement and some technical difficulties related to the sensors are discussed. The results indicated how the effects of mesoclimate were transferred through to the different sensors. A dominating effect of the sea breeze in Stellenbosch was found. Canopy configuration/architecture affected the light regime in the canopy, consequently impacting on bunch temperature variability, specifically in Stellenbosch where a "Ballerina" trellising system was used. Bunch orientation resulted in differences in the temporal variability of bunch/berry temperature and little variability was observed in temperature within the berry. Temperatures of berries situated at the back of the bunch were judged more optimal compared to exposed berries. Direct radiation caused extreme temperatures in exposed berries, which may be detrimental to berry composition and wine quality. This emphasized the importance of the canopy (trellis/training system and management practices) in protecting the bunch from extreme conditions. The large on-bunch spatial variability, observed from measurements with the thermal imager, demonstrated the importance of sensor placement in quantifying the bunch temperature regime; this is also relevant for the future development of berry temperature modelling. Thermal accumulation through the season also illustrated the variability that existed within a bunch, suggesting a potential long term effect on the berry composition. This study proved, in conditions similar to those that may prevail in the South African wine industry, that sensor type and positioning need to be carefully considered in any viticultural/oenological study where bunch microclimate and grape temperatures are assessed.
AFRIKAANSE OPSOMMING: Die mikroklimaat omgewing rondom die tros is kompleks. Die ruimtelike verspreiding van blare sowel as trosposisie en -morfologie het 'n impak op die pad waarlangs direkte straling ontvang word deur die korrels. Lowermikroklimaat word grootliks bepaal deur die meteorologiese kondisies (lugtemperatuur, sonstraling, windspoed en -rigting, relatiewe humiditeit en reënval) sowel as bestuurspraktyke (prieel/opleistelsel, lowerhoogte, wingerdstokspasiëring, ry-oriëntasie, lowerbestuurspraktyke, besproeiing asook grondvariasie en bestuur). Die feit dat die wingerdstok voortdurend reageer op sy omgewing dra by tot die kompleksiteit en dinamiese aard van die mikroklimaat wat die trosse ervaar. Veldstudies gemoeid met die effek van die natuurlike trosomgewing (d.w.s. lig- en temperatuurkondisies) op korrelsamestelling is daarom 'n uitdaging. Die rede hiervoor is dat dit problematies is om meteorologiese elemente soos temperatuur en lig, wat baie veranderlik kan wees, te kwantifiseer. Verskillende sensors is beskikbaar waarmee tros- en korreltemperatuur bepaal kan word en dit kan op verskillende wyses binne die wingerdstoklower aangewend word. Die bestudering van die variasie wat bestaan binne 'n tros is egter steeds problematies. Hierdie studie het die waarde ondersoek van die beskikbare sensortegnologie vir die meting van tros/korreltemperatuur en die ruimtelike en tydsvariasie op 'n tros. Verskille in temperatuur op 'n intra-korrelvlak is bepaal terwyl die impak van lowerkonfigurasie en trosoriëntasie op die verskillende sensorvlakke ook ondersoek is. Die bydrae van makro- en mesoklimaat tot tros- en korreltemperatuur is ondersoek deur te meet by twee verskillende liggings (Robertson en Stellenbosch). Die potensiële langtermyn verskille in temperatuur binne-in 'n tros met betrekking tot temperatuur akkumulasie word bespreek. Kwessies rakende sensorplasing en sommige tegniese probleme wat verband hou met sensors word bespreek. Die resultate het aangedui hoedat die effekte van mesoklimaat oorgedra is na die verskillende sensors. 'n Dominerende effek van die seebries is waargeneem in Stellenbosch. Lowerkonfigurasie/argitektuur het die ligregime in die lower beïnvloed en gevolglik 'n invloed gehad op die trostemperatuur veranderlikheid. Dit was veral die geval in Stellenbosch waar 'n "Ballerina" opleistelsel gebruik is. Trosoriëntasie het gelei tot verskille in tydsvariasie van tros/ korreltemperatuur en min variasie is waargeneem in temperatuur binne die korrel. Temperature van korrels wat voorkom aan die agterkant van die tros is beoordeel as meer optimaal vergeleke met blootgestelde korrels. Direkte straling het uiterste temperature in blootgestelde korrels veroorsaak wat nadelig kan wees vir korrelsamestelling en wynkwaliteit. Hierdeur is die belang van die lower (prieel/opleistelsel en bestuurspraktyke) om die tros te beskerm teen uiterste kondisies beklemtoon. Die groot ruimtelike variasie op 'n tros, soos waargeneem in metings met die termiese kamera, het die belangrikheid van sensorplasing in die kwantifisering van die trostemperatuur regime beklemtoon. Dit is ook relevant vir die toekomstige ontwikkeling van korreltemperatuur modellering. Termiese akkumulasie gedurende die seisoen is ook geïllustreer deur die veranderlikheid wat voorkom binne 'n tros, wat dui op 'n potensiële langtermyn effek op die korrelsamestelling. Hierdie studie het bewys, in kondisies wat algemeen voorkom in die Suid-Afrikaanse wynbedryf, dat sensortipe en -plasing sorgvuldig in ag geneem moet word in enige wingerd/wynkundige studie waar trosmikroklimaat en druiftemperature bepaal word.
Winetech and the National Research Foundation for their financial support of the project

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Martin, Amanda Marie. "Wine Discrimination and Analysis Using Quartz Microbalance Based Electronic Nose Technology." Thesis, Virginia Tech, 2007. http://hdl.handle.net/10919/31110.

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Wines are composed of numerous compounds that are complex, making them difficult to analyze. Wine evaluation and discrimination is typically done through chemical and human sensory evaluation. Unfortunately, both of these methods are time consuming and expensive. Therefore a new rapid analysis technique for wine discrimination and analysis is desired. The electronic nose has been suggested as an alternative to current wine discrimination techniques.

In this study, a quartz microbalance-based electronic nose system was utilized to analyze the overall volatile components of wine. The electronic nose was optimized for Cabernet Sauvignon and MouvÃ©dre wine to gain maximum sensor response from the sensors. Response surface methodology was used to determine the optimum sensor response by varying three experimental parameters: sensor temperature, sample temperature and equilibrium time. The maximum sensor response occurred at an equilibrium time of 20 min for each varietal and at a sample temperature of 55ÂºC and 56ÂºC for Cabernet Sauvignon and MouvÃ©dre, respectively. The optimum sensor temperature selected for this study was 40ÂºC for both varietals.

Using the optimum sensor settings, the electronic nose was used to analyze Cabernet Sauvignon wines. Grapes were treated with ethanol spray (5%, and 10%) 13 weeks post-bloom, which has been shown to affect the overall quality of the final wine product. Wine samples were evaluated using chemical analyses, human sensory evaluation and electronic nose. Significant differences between the wines were observed based on pH, percent alcohol, and color intensity only. A consumer sensory panel consisting of 81 panelists was unable to differentiate amongst sample treatments. However, the electronic nose was able to differentiate between the control group and the treated samples 100% of the time. Canonical discriminant analysis of the data placed the 5% ethanol treatment as a sub-set of the 10% ethanol treatment. The results indicate that the electronic nose can be used as a discriminatory tool for assessing wines.
Master of Science

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Tembo, Rachael. "Information and communication technology usage trends and factors in commercial agriculture in the wine industry." Thesis, [S.l. : s.n.], 2008. http://dk.cput.ac.za/cgi/viewcontent.cgi?article=1066&context=td_cput.

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Kalathenos, Panayiotis. "Predictive modelling of wine spoilage microorganisms." Thesis, University of Reading, 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.260584.

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Claassen, Hester. "Interactive tools supporting agriculture in the wine industry." Thesis, Cape Peninsula University of Technology, 2012. http://hdl.handle.net/20.500.11838/1310.

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Thesis (MTech(Design))--Cape Peninsula University of Technology, 2012
To design from a human perspective rather than from existing technological opportunities, and involving multiple stakeholders with their different perspectives, is an important aspect of participatory design and user-centered design. This thesis project was an explorative study done on a wine estate, in the Western Cape, South Africa, to find novel ICT solutions, for supporting co-operation and planning between multiple and individual work tasks in the work practice. This research explored potentials to manage multiple stakeholders and use their different perspectives to inform design research. The thesis project shows the ethnographic research gathered through video shadowing, workshop results involving the users to contribute to the development of the design by acting with a projection, leading up to a design opening and further focused on the concept development with the stakeholders.The thesis proposes a simulated concept namely the Visual Calculator (VC). This system is designed to involve several participators within a work practice. It supports calculation activities for spraying and buying chemicals. It saves the user time by incorporating standard calculations to output needed information faster. It supports planning, management and record keeping aspects of the farm manager’s work practice in the vineyard spraying process. Although the concept was more fully developed for the farm manager, the VC involves two other work roles including the owner and foreman. The concept focuses on a human centered perspective, instead of making the system fully automated, giving users control and not controlling the users. For this to be successful work should be divided and have equal responsibilities, each stakeholder can contribute and value their part of the work, knowing where it fits in, why it is important and how it influences other aspects of the work practice. The research outcome involves, envisioning the future potentials of the design (VC), design for participation, a way to identify design openings, problem solving and conceptualizing by utilizing user’s strengths.

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Ekner, Frida, and Linnéa Andersson. "Optimization of scheduling the use of vats during the wine fermentation process." Thesis, KTH, Skolan för teknikvetenskap (SCI), 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-275733.

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In this paper the goal was to optimize the scheduling of vats for the wine fermentation process considering demand, time and quality constraints in order to minimise the production cost. The method that was used during the project was to start of with a simple model that only took the basic parameters in to account, verify that it worked, and then add up parameters until the model was completed. An integer program was formed to obtain the optimal solution to the problem och to test the programs accuracy a small example that could be tested by hand was made. It showed that the program worked as expected and a conclusion that was drawn was therefore that the program would work for larger problems, that are more based in reality, as well. After testing the program for larger problems another conclusion that was drawn was that for instance a larger vintage period and an increased frequency of supply led to an increase in the solving time.
Syftet med den här rapporten var att optimera schemaläggningen av kärl för vinfermenteringsprocessen med avseende på efterfrågan, tid och kvalitet för att minimera produktionskostnaden. Tillvägagångssättet under projektet var att utgå ifrån en enkel model som endast tog de grundläggande parametrarna i åtanke, verifiera att den fungerade, och sedan lägga till parametrar tills att modellen var fulländad. Ett dynamiskt program togs fram för att finna den optimala lösningen och för att testa dess tillförlitlighet användes ett mindre exempel. Det visade sig att programmet fungerade som det skulle och därmed drogs slutsatsen att programmet även ska fungera för större, mer verklighetstrogna, problem. Efter att ha testat programmet för större problem drogs även slutsatsen att faktorer som bland annat längre perioder och högre frekvens på tillförsel av druvor leder till större lösningstider.

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Khan, Nuraan. "The development of the emerging technologies sustainability assessment (ETSA) and its application in the design of a bioprocess for the treatment of wine distillery effluent." Thesis, Rhodes University, 2005. http://hdl.handle.net/10962/d1004012.

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Emerging Technologies Sustainability Assessment (ETSA) is a new technology assessment tool that was developed in order to compare emerging processes or technologies to existing alternatives. It utilizes infoIDlation modules, with the minimum use of resources such as time and money, in order to deteIDline if the process under development is comparatively favourable and should be developed beyond the early conceptual phase. The preliminary ETSA is vital in order to identify the gaps in the existing information and the specific methodologies to be used for data capture and analysis. The use of experimental design tools, such as Design-Expert, can facilitate rapid and efficient collection of necessary data and fits in well with the rationale for the ETSA. Wine distillery effluent (vinasse) is the residue left after alcohol has been distilled from fennented grape juice. It is an acidic, darkly coloured effluent, with a high COD and polyphenol content. The most popular method of disposal of this effluent, land application, is no longer viable due to stricter legislation and pressure on the industry to better manage its wastes. Although the ability of whiterot fungi to degrade a number of pollutants is well-known, fungal treatment of wine distillery effluent is still in the conceptual phase. The perfoIDlance of the fungal remediation system was assessed experimentally in terms of COD removal and laccase production using Design-Expert. Although Pycnoporus sanguine us was found to be most efficient at COD removal (85%) from 30% vinasse, laccase production was low (0.021 U/I). The optimum design for economically viable fungal treatment used Trametespubescens. This fungus was able to remove over 50% of the COD from undiluted vinasse while producing almost 800U/l of the valuable laccase enzyme within three days. Since the effluent from the fungal system did not meet the legal limits for wastewater disposal, a two-stage aerobicanaerobic system is suggested to improve the quality of the effluent prior to disposal. The ETSA was used to assess the fungal technology in relation to the two current methods of vinasse treatment and disposal, namely land application and anaerobic digestion. Based on the ETSA, which considered environmental, social and economic impacts, the fungal system proved to be potentially competitive and further development of the technology is suggested.

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Nocera, Anna. "Impact of an alternative ageing technology using micro-oxigenation on the wine spirit's antioxidant activity." Master's thesis, ISA, 2019. http://hdl.handle.net/10400.5/19566.

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Mestrado em Engenharia de Viticultura e Enologia - Instituto Superior de Agronomia / Faculdade de Ciências - Universidade do Porto
The study of antioxidant activity, a quality parameter, was performed during the first year of a Lourinhã wine spirit’s ageing, through two different ageing technologies: traditional technology using 250 L barrels, and alternative technology using 1000 L stainless steel tanks with wooden staves and micro-oxygenation. In both technologies, the same types of wood were used: Limousin oak and chestnut, and mixture of them, with medium plus toasting level. The quantity of the wooden staves added to the stainless steel tanks was calculated to reproduce the surface area to volume ratio of 250 L wooden barrel, therefore, to be comparable. The tanks were provided with micro-oxygenation during the ageing period, simulating the amount of oxygen entering through the barrels. The alternative technology induced higher antioxidant activity along with faster enrichment in wood derived phenolic compounds. In addition, the antioxidant activity, the total phenolic content and the low molecular weight phenolic compounds concentrations determined by HPLC exhibited significant positive correlations. The results also showed that alternative technology can be used as a valid method of ageing wine spirits since it allowed obtaining a high quality aged beverage through a more economically and environmentally sustainable process. A synergistic effect with the chestnut wood was also observed
N/A

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Macieira, Francisco Miguel Arrenegado Rocha. "Estudo prospectivo das necessidades tecnológicas da fileira vitivinicola." Master's thesis, ISA/UTL, 2012. http://hdl.handle.net/10400.5/5356.

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Mestrado em Viticultura e Enologia - Instituto Superior de Agronomia / Faculdade de Ciências. Universidade do Porto
The foresight study of the technology needs for the Wine Industry allowed the identification of technological needs that require development. The DELPHI method, a technology foresight method that has been successfully used before in the agrifood sector, formed the basis of the analysis. This method required the participation of experts from the wine industry. The application of the method was undertaken in two rounds of surveys: the first round had the participation of 42 experts and the second round 30 experts. The surveys were the same in both rounds, with only one difference: in the second round, the results of the first survey were revealed as a feed-back to the participants. In conclusion, it is possible to demonstrate three trends: natural resources sustainability, information technologies and promotion of information access capabilities (including the development of expeditious methods), and promotion of the intrinsic diversity of the Portuguese wine industry products. The work has shown that there is a great detachment between the wine industry and the scientific institutions, highlighting the need of an increment in the efforts of technology transfer. There is therefore a need to undertake new editions of this foresight study with a greater participation of the wine cluster experts.

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Fredericks, Ilse Nadia. "Efficacy of ultraviolet radiation as an alternative to inactive technology to inactivate micro organisms in grape juice and wines." Thesis, Cape Peninsula University of Technology, 2010. http://hdl.handle.net/20.500.11838/2022.

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Thesis (MTech (Food Technology))--Cape Peninsula University of Technology, 2010.
Sulphiting is considered as the most reliable and understood preservation technique in the wine industry. Since sulphur dioxide (S02) has been associated with possible health risks, legislation as well as consumers, are becoming more reluctant about the general use of S02 in wine production. In order to avoid economic losses due to spoilage, the wine industry is seeking feasible techniques to possibly reduce the levels of S02 in wine. The purpose of this study was, therefore to determine the efficacy of ultraviolet radiation (UV)-C (254 nm) as an alternative technology to inactivate microorganisms in white and red grape juices and wines.

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Deva, Faton. "A Future Wine Cluster in Kosova?" Thesis, Blekinge Tekniska Högskola, Sektionen för teknokultur, humaniora och samhällsbyggnad, 2007. http://urn.kb.se/resolve?urn=urn:nbn:se:bth-5724.

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This thesis deals with the Kosovar agricultural economy and the introduction of new approaches. Kosova is an economy in transition with high unemployment, young population and structural problems. The privatization process promises a better future and economic growth. However, hard work and new approaches are needed. Privatization does not mean immediate growth. Hereby, clusters are considered as an appropriate approach to develop rural areas. Especially the wine sector in Kosova could be an example for cluster development as it is a promising sector. Wine has a long history in Kosova although wine consumption is not widespread. This sector is a rare example where exports are higher than imports. Climate conditions cheep working force and as stated the background make this sector attractive. Foreign agencies and investors are very interested in this sector. This thesis will show the main problems and main opportunities of this sector. It will describe the structural changes and current developments. Cluster creation is not a government function. Further, it is not a tailor-made solution. In fact, clustering involves many roles. Each participant has certain duties but the whole process needs coordination. The monitoring and supervision of the whole process, the identification of needs and permanent exchange of the participants are organized in a cluster. At the end, a win-win situation is created even if competition is raised to a high level. Competition and the functioning of free markets guarantee the success of the sector and as a results regional development. One cluster helps to create another. Starting one process means that many others could follow. By reading this thesis, the reader should recognize potentials and understand the local circumstances. This is the aim of the study.
Faton Deva "Shkodra" 14, Prishtina 10000 Kosova mob: +377(0)44122883 e-mail:faton99d@gmail.com

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Adamo, Cristian 1971. "A global perspective of the wine supply chain : the case of Argentinean wineries and the U.S. market." Thesis, Massachusetts Institute of Technology, 2004. http://hdl.handle.net/1721.1/17863.

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Thesis (S.M.M.O.T.)--Massachusetts Institute of Technology, Sloan School of Management, Management of Technology Program, 2004.
Includes bibliographical references (leaves 74-76).
Consumers are constantly demanding better products, at lower prices, along with better overall services and customer support. Organizations, on the other hand, are struggling with shorter product life cycles, increased product variety and lower profit margins due to fierce global competition and faster commoditization of products and services. In a new, global world, targeting local markets does not seem to be enough for long-term company survival. Good supply chain management and design is becoming a key factor for resource optimization, overall user experience enhancement and to achieve a competitive strategic advantage in order to gain sustainable growth ratios. This thesis analyses how current trends in Supply Chain Management are affecting the global wine supply chain, and builds on the specific case of Argentinean wineries that sell their products in the U.S. market. I start by analyzing each tier of the supply chain using Porter's Five Forces model in order to understand the characteristics of each tier, how these forces impact the supply chain as a whole, and how companies interact between tiers. While doing so, I also analyze how current trends in Supply Chain Management are affecting the current state of the supply chain. Finally, I describe possible changes in the supply chain configuration due to the adoption of these new trends by organizations along the chain, and describe some of the major aspects that Argentinean wineries should take into account in order to gain a better competitive advantage along the chain.
by Cristian Adamo.
S.M.M.O.T.

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Cisilotto, Bruno. "Utilização de resina de troca iônica pré-fermentativa para elaborar vinhos base de espumantes." reponame:Repositório Institucional da UCS, 2017. https://repositorio.ucs.br/handle/11338/3023.

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Considerando que os vinhos espumantes são produtos importantes para o setor vitivinícola brasileiro, pesquisas relacionadas com melhorias na elaboração deste produto são relevantes para a qualidade, diversificando os produtos. A acidez dos vinhos normalmente sofre correções durante o processo de elaboração com ácidos orgânicos, porém, atualmente, existem outras alternativas que estão sendo testadas e utilizadas com o intuito de melhorar a qualidade do produto. Dentre essas alternativas encontram-se as resinas de troca iônica recomendadas para aplicações enológicas que são formadas por uma matriz de poliestireno reticulado com divinilbenzeno. Essas resinas são encapsuladas em microesferas de 0,3 a 1,2 mm e possuem alta estabilidade físico-química. Depois de serem tratadas com ácido, estas resinas adquirem carga positiva com H+ e intercambiam estes cátions com K+, Ca2+ e outros cátions presentes no mosto, liberando ácido tartárico e outros ácidos, reduzindo o pH. Estas modificações químicas podem afetar a composição química dos mostos, vinhos e também o metabolismo das leveduras. Tendo isso em vista, o objetivo deste trabalho centrou-se em analisar, reunir e interpretar dados e informações avaliando o impacto da técnica na cinética fermentativa, nas características químicas dos mostos e nas características químicas e organolépticas dos vinhos resultantes, provenientes de um mesmo mosto, com diferentes tempos de passagem por uma resina de troca iônica (catiônica) comercial, específica para uso enológico. Para os experimentos, um mosto de Chardonnay (75 L) foi extraído com uma prensa pneumática e clarificado com sol de sílica/gelatina. O mosto passou pela coluna de resina tantas vezes quanto necessário para obter a redução de pH desejada. Os tratamentos do experimento incluíram um mosto controle com índice de pH 3,2, e mostos com pH 3,14, 3,07, 3,01 e 2,93, obtidos pelo tratamento com resina de troca catiônica. Todos os mostos foram inoculados com a mesma levedura selecionada (20g/hL), e as fermentações foram monitoradas através da redução de massa (liberação CO2 g/L). Os resultados da cinética dos processos fermentativos foram ajustados pela equação não linear sigmoidal de Gompertz e expressos como: duração da fase Lag (Lag=horas), liberação total de CO2 (Ymax=g/L), taxa máxima de liberação de CO2 (µmax=g/L/dia). As análises dos mostos incluíram medição do pH, acidez total, cor, polifenóis totais, ácido tartárico, nitrogênio amoniacal e metais (cátions). Nos vinhos foram realizadas análises básicas, de compostos voláteis, análise organoléptica e de oxidação ao longo do tempo (medida através da mudança de cor das amostras). Os parámetros cinéticos mostraram diferenças significativas entre o controle e os tratamentos, exceto para o tratamento com pH 2,93 o qual obteve maior liberação de CO2 total. As reduções dos três paramentros foram lineares (r>95) dentro da faixa de pH de 3,2 a 3,01. Por outro lado nos pHs mais baixos (3,01 e 2,93) as diferenças não foram significativas. As análises dos mostos apresentaram diferenças significativas seguindo a tendência do funcionamento das resinas, com redução dos cátions e aumento da acidez total e concentração de ácido tartárico livre. A quantidade de nitrogênio amoniacal teve uma redução significativa nos tratamentos. Alguns compostos volateis dos vinhos variaram sua concentração levando a um aumento na concentração dos álcoois superiores e uma redução nos acetatos e ésteres etílicos. A oxidação dos vinhos foi acompanhada ao longo do tempo e mostrou maior resistência nos vinhos com o pH alterado. Na análise organoléptica houve uma preferência pelo vinho controle e os vinhos com o pH mais próximo dele. Esse estudo mostrou que o tratamento com resinas catiônicas afeta a fermentação, mostos e vinhos, podendo contribuir de maneira positiva ou negativa, dependendo do tratamento, para a elaboração de vinhos base de espumante.
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Considering that sparkling wines are important products for the Brazilian wine sector, researches related to different elaboration techniques are relevant for the increase of enological options and product diversity. The acidity of wines is usually corrected during the process of elaboration with organic acids, but currently there are other alternatives that are being tested and used in order to improve the quality of the product. Among these alternatives are the cation exchange resins recommended for enological applications are constituted by a matrix of polystyrene reticulated with divinylbenzene. These resins are encapsulated in microspheres from 0.3 to 1.2 mm, and have high physic-chemical stability. After an acid treatment, the resins are positively charged with H+ and exchange these cations with K+, Ca2+ and other cations present in grape must, releasing tartaric and other acids, reducing the pH. These chemical modifications may affect the chemical composition of must, wines and also yeast metabolism. In view of this, the purpose of this work was to analyze, gather and interpret data and information evaluating the impact of the technique on fermentative kinetics, on the chemical characteristics of musts and on the chemical and organoleptic characteristics of the resulting wines, from a same must, with different times of passage through a commercial cation exchange resins, specific for enological use. For the experiments, a Chardonnay must (75 L) was obtained by pneumatic press extraction, and clarified with silica and gelatin. The must passed through a resin column, as many times as necessary to obtain the desired pH reductions. The experiment treatments included the control must with pH index 3.2, and must with pH 3.14, 3.07, 3.01, and 2.92, obtained by cation-exchange resin treatment. All the musts were inoculated with the same commercial yeast strain (20 g/hL), and fermentation was monitored by mass reduction (CO2 release (g/L)). Kinetic data were adjusted by a modified non-linear sigmoidal equation of Gompertz, and expressed as: Lag-phase duration (Lag=hours), total CO2 release (Ymax=g/L) and maximum rate of CO2 release (µmax=g/L/day). Musts analyses included the measured of pH, total acidity, color, total polyphenols, tartaric acid, ammoniacal nitrogen and metals (cations). There were basic analysis made in the wine and also volatile compounds, organoleptic and oxidation within time (measured by the samples’ color change). The kinetic parameters showed significant differences among the control and the other treatments, except for the treatment with pH of 2,93, which had a higher total CO2 release. The reductions of the three parameters was linear (r>95) on the pH range of 3,2 and 3,01. However, at the lowest pHs (3.01 and 2.93) the differences were not significant. Must analyses showed significant differences following the tendency from the resin’s operation for cation’s reduction, increase of total acidity, and concentration of free tartaric acid. The amount of ammoniacal nitrogen had a significant decrease on the treatments. Some wine volatile compounds concentration exhibited significant differences between treatments, leading to an increase in higher alcohols concentration, and a decrease in acetate and ethylic esters. The oxidation of wines was accompanied through time and showed a major resistance on the wines with altered pH. In the organoleptic analysis, there was a preference for the control wine and the wines with similar pH to the control. This study shows that the treatment with cationic resins affects the fermentation, must and wines and it can contribute in a positive or negative way, depending on the treatment, for base-wine production.

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Thompson, Kelly R. "The millennial generation and wine purchasing beliefs in casual dining restaurants." Diss., Kansas State University, 2010. http://hdl.handle.net/2097/4636.

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Doctor of Philosophy
Department of Hospitality Management and Dietetics
Elizabeth B. Barrett
The primary purposes of this research were to 1) use the Theory of Planned Behavior (TPB)to assess Millennial generation wine consumers attitudes, perceived behavioral controls, and subjective norms related to purchasing wine in casual dining restaurants (CDR), and 2) use Conjoint Analysis (CA) to analyze Millennials’ preferences for wine information on the restaurant menu. An instrument was designed based on the TPB and CA and was sent online to 216 consumers using the database of a market research firm (e-rewards). Independent variables (attitude, perceived behavioral control, and subjective norms) were analyzed to predict behavioral intentions to purchase wine. Principal component analysis was combined with multiple linear regression to assess intention. Results identified attitudes and subjective norms as being significant in predicting behavioral intention, perceived behavioral controls was partially significant. Millennial’s believe ordering wine with their friends and family in casual dining restaurants will make them feel smart and sophisticated and will increase the enjoyment of food. However, they do not believe wine consumption is appropriate in CDR’s; they had strong perceptions that wine is purchased for special occasions and consumed in fine dining restaurants. Part II of the study employed conjoint analysis to determine Millennials preferences for wine information on the menu. Results indicated that Millennials prefer menus that provide wine/food pairing information, wine flavor descriptors located near food listings and quality wines at an affordable price. Millennials attitudes, subjective norms, and perceived behavioral controls support previous research that this generation is interested in wine and wine is a social experience that increases their enjoyment of food and time spent with their friends and family. Through the use of CA, the present study suggests wine information on the menu is important to this segment of consumers. Additional research should be conducted to understand the stereotypes this generation has about wine consumption in casual dining restaurants. These operators and owners should consider focusing their marketing efforts showing Millennials enjoying wine while celebrating special occasions with their friends and family. In addition, redeveloping menus in their operations to add wine information may increase interest in wine and generate profit.

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Lee, Dominique. "When Malbec became Argentine: An Analysis of the Quality Wine Revolution in Mendoza." Scholarship @ Claremont, 2018. http://scholarship.claremont.edu/scripps_theses/1224.

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At the beginning of the 1990s, the Argentine wine industry experienced a shift from quantity to quality production which occurred while economic policies in Argentina opened economic opportunities for investment in the country. With these new opportunities, the industry began to focus on producing quality wine because of the desire to export and compete in the international market. As foreign investment entered Mendoza, the heart of Argentine wine country, new ideas and knowledge about wine production began to disseminate into the region and everyday practices. The shift from quantity to quality production was a paradigm shift in that it ushered in a new way of understanding quality in relation to the land, resulted in the younger generation of winemakers excelling in the region, and ultimately led to a new way of viewing production practices and techniques entirely separate from the previous century of production. This project asks: to what extent did this shift impact the implementation and regulation of geographic indications in Mendoza? It seeks to understand the impact that terroir-driven wine production imparted on Argentine winemakers to illuminate the resilience and perseverance of a growing wine center in the Global South.

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Cristofoli, Kélen. "Clarificação de vinho branco por microfiltração utilizando diferentes membranas cerâmicas e compósitas." reponame:Repositório Institucional da UCS, 2016. https://repositorio.ucs.br/handle/11338/1880.

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A microfiltração tangencial aplicada à clarificação de vinho branco tem se tornado uma importante alternativa aos processos convencionais de filtração na indústria vinícola, como a filtração por terras diatomáceas, trasfega e centrifugação. O uso de membranas cerâmicas tem despertado interesse para esta finalidade. Neste trabalho, diferentes membranas cerâmicas e compósitas tubulares, mono e multicanal, de diferentes tamanhos de poro, foram avaliadas quanto à sua morfologia e testes de permeabilidade hidráulica e do vinho branco, a fim de verificar a influência da estrutura destas no fluxo de vinho branco permeado, bem como, avaliar a presença de resíduos sólidos suspensos no vinho permeado decorrente de seu processo de clarificação. As membranas foram caracterizadas por difração de raios X (DRX), microscopia eletrônica de varredura por emissão de campo (FESEM), espectroscopia de dispersão de energia (EDS), porosimetria por intrusão de mercúrio, testes de permeabilidade e retenção de proteínas. O tamanho médio de poro apresentado pelas membranas variou de 0,0056 a 5,0 µm. As membranas compósitas apresentaram ótima retenção proteica, 99%, para solutos com massa molar acima de 45 kDa. Membranas de α-alumina tratadas termicamente a 1450ºC e membranas compósitas de α-alumina/poliamida 66 demonstraram, em média, redução de 99,9% da turbidez inicial do vinho, sendo possível reduzir de 720 NTU para, em média, 0,30 NTU, com possibilidade de estabilização tartárica em sete dias e fluxos de permeado que variaram de 60,8 a 8,8 L.m-2.h-1, respectivamente, a 1,0 bar de pressão. Por outro lado, membranas de mulita e titânia não demonstraram eficiência para a clarificação, sendo que o vinho permeado pela membrana de mulita apresentou turbidez de 20 NTU e aumento do índice de polifenóis totais (IPT). Membranas compósitas permitiram a redução de 37% no valor de IPT do vinho branco. O baixo valor de turbidez obtido nos vinhos permeados pelas membranas de alumina e compósitas demonstra forte perspectiva da utilização destas membranas na clarificação do vinho branco.
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The tangential microfiltration applied to the clarification of white wine has become an important alternative to conventional filtration processes in the wine industry, for example, the filtration diatomaceous earth, land transfer and centrifugation. The use of ceramic membranes has awakened interest for this purpose. In this work, different and tubular composite ceramic membranes, mono and multi-channel, of different sizes of pore, were evaluated for their morphology and hydraulic permeability tests and white wine, in order to verify the influence of the structure of these in white wine flow permeated as well, evaluate the presence of suspended solids in the waste wine due to its process of clarification. The membranes were characterized by x-ray diffraction (XRD), scanning electron microscopy by field emission (FESEM), energy dispersive spectroscopy (EDS), porosimetria by mercury intrusion tests, permeability and protein retention. The average pore size presented by membranes ranged from 0.0056 to 5.0 µm. Composite membranes showed great protein retention, 99%, for solutes with molecular weight up to 45 kDa. α-alumina membranes treated thermally to 1450ºC and composite membranes of α-alumina/polyamide 66 showed, on average, 99.9% reduction of wine’s turbidity, being possible to reduce from 720 NTU to average 0.30 NTU, with possibility of tartaric stabilization in seven days and permeate fluxes that ranged from 60.8 to 8.8 L. m-2h-1, respectively, the 1.0 bar pressure. On the other hand, mullite and titania membranes have not shown effectiveness for clarification, the wine permeated by the membrane of mullite presented turbidity of 20 NTU and increase the rate of total polyphenols (IPT). Composite membranes have enabled the reduction of 37% in the value of IPT of the white wine. The low turbidity value obtained in wine permeated by composite and alumina membranes, strong perspective of use demonstrates of these membranes in the clarification of white wine.

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De, Villiers A. J. (Andre Joubert). "Evaluation of pressure- and electrodriven separation techniques for the determination of phenolic compounds in wine." Thesis, Stellenbosch : Stellenbosch University, 2000. http://hdl.handle.net/10019.1/51753.

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Thesis (MSc)--Stellenbosch University, 2000.
ENGLISH ABSTRACT: The phenolic content of wine is responsible for determining characteristics such as the organoleptic qualities, colour stability, ageing properties and health-beneficial effects associated with wine. The aim ofthis study was to investigate the possibilities offered by capillary electrophoresis (CE) as an alternative separation technique to high performance liquid chromatography (HPLC) for the analysis of polyphenols in wine. The complexity of wine samples was the cause that neither technique was capable of a satisfactory singlestep analysis of wine. Suitable sample preparation techniques such as Sephadex- and Sep- Pak fractionation and ether extraction of wine polyphenols were investigated. These techniques did not, however, prove to be universal. A novel form of sample preparation namely a process analogous to lyophylization used to separate wine volatiles from nonvolatiles was introduced. The versatility of CE was further investigated in an attempt to eliminate the need for sample preparation. The use of polyvinylalcohol (PVA) coated capillaries, micellar electrokinetic chromatography (MEKC) and capillary gel electrophoresis (CGE) were investigated in this regard. Although none of these techniques could offer conclusive results, useful applications were forthcoming and routes for further investigation were outlined. Liquid chromatography coupled to electro spray ionisation mass spectroscopy (LC-ESI-MS) and capillary electrophoresis coupled to electro spray ionisation mass spectroscopy (CE-ESI-MS) were compared for the analysis of polyphenols in wine. While the latter technique could not produce sufficient separation compared to the former, future development ofCE-ESI-MS should make it a powerful technique for these analyses.
AFRIKAANSE OPSOMMING: Die fenoliese komponente in wyn speel 'n bepalende rol by eienskappe soos die organoleptiese karakter, kleur stabiliteit, verouderingspotensiaal en gesondheids-voordele wat met wyn geassosieër word. Die doel van hierdie projek was om ondersoek in te stel na die potensiaal wat kapillêre elektroforese (CE, "capillary electrophoresis") as 'n alternatiewe skeidingstegniek teenoor hoë druk vloeistof chromatografie (HDVC) vir die analise van die polifenole in wyn bied. Die kompleksiteit van wyn monsters is van so 'n aard dat 'n bevredigend enkelstap analise met geeneen van die tegnieke moontlik is nie. Gepaste monster-voorbereidingstappe soos Sephadex- en Sep-Pak fraksionering asook eter ekstraksie van die polifenole in wyn is ondersoek. Geeneen van die tegnieke was egter universeel toepaslik nie. 'n Nuwe metode van monster-voorbereiding, naamlik 'n proses analoog aan liofilisasie wat gebruik word om die wyn te skei in vlugtige en nievlugtige komponente is gedemonstreer. Die veelsydigheid van CE was gevolglik ondersoek in 'n poging om monstervoorbereiding uit te skakel. Die gebruik van polyvinielalkohol-(pVA) bedekte kapillêre, missellêre elektrokinetiese chromatografie (MEKC) en kapillêre gel elektroforese (CGE, "capillary gel electrophoresis) is in hierdie verband ondersoek. Alhoewel geeneen van hierdie tegnieke onweerlegbare resultate gelewer het nie, het bruikbare toepassings hieruit voortgespruit en is die grondslag vir verdere navorsing gelê. Vloeistof chromatografie gekoppel aan eIektrosproei ionisasie massaspektroskopie (LCESI- MS) en kapillêre elektroforese gekoppel aan elektrosproei ionisasie massaspektroskopie (CE-ESI-MS) is vergelyk vir die analise van polifenole in wyn. Alhoewel laasgenoemde tegniek onvoldoende skeiding lewer vergeleke met eersgenoemde, behoort toekomstige ontwikkelinge op die gebied van CE-ESI-MS dit 'n kragtige tegniek vir die analise van hierdie monsters te maak.

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Engström, Roxendal Patrick, and Sara Westlund. "Increasing transparency in the supply chain with blockchain technology : A case study of small and medium sized South African wine producers." Thesis, Karlstads universitet, Fakulteten för hälsa, natur- och teknikvetenskap (from 2013), 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:kau:diva-74506.

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The world is facing new challenges caused by global warming and is puttingpressure on governments, companies and the civil society to act fast. Like all industries, the wine industry is affected by climate change and wine producers are simultaneously struggling to stay viable while competing on a global market. To become sustainable, transparency is needed in the supply chain so that stakeholders and consumers can influence it. In this study, blockchain technology is investigated as a possible technology that can increase sustainability, transparency and over-all efficiency in the supply chain. The study is a case study and takes place in South Africa. The study takes the perspective of small and medium sized enterprises because they are a big part of the market and has not been researched in this area. Empirical data was collected through interviews, observations and secondary data and it was analyzed through thematic analysis. The results show that there is a lot of administrative work in the industry where compliance and certifications take a lot of time and effort. The smaller wineries, that often want to focus on making good wine, have a harder time with the administrative work since the same person might have several roles or functions in the business. The current traceability system is also one of the best in the world but is largely paper based. In the discussion it is shown that the industry has some elements that would be good for a blockchain system but the smaller producers would probably not dare to invest in such a system since they need improvements in quality or efficiency to stay viable and the technology required is expensive. The thesis concludes that the industry has some structures in place that would be a good base for a blockchain system. This could add an extra level of security and trust to the system. The implementation for the small-scale producers seems far away since the technological requirements are expensive.
De rådande klimatförändringarna ställer nya krav på företag att ta ansvar för sina utsläpp och miljöpåverkningar. Därför blir det allt mer vanligt för företag att medvetet öka hållbarheten i sina värdekedjor eftersom det också blir allt viktigare för stakeholders och konsumenter. För att kunna sätta press på företag krävs dock transparens och med komplexa värdekedjor kan detta vara svårt att skapa. Därför krävs nya teknologier som kan hjälpa företag att öka transparens, effektivitet och integritet. Blockchain-teknologi är en relativt ny teknologi som med sina decentraliserade egenskaper har potential att användas i värdekedjan för att öka hållbarhet och transparens. Denna studie undersöker just det genom en fältstudie i den Sydafrikanska vinindustrin. Det är in riktadpå främst små- och medelstora företag och inkluderar också industriorganisationer för att bidra med en holistisk bild av värdekedjan för vin. Genom intervjuer, observationer och sekundärdata samlades empirisk data in och analyserades med tematisk data-analys. Resultaten visade att små-och medelstora vinproducenter fäktas med mycket administrativt arbete och har svårt att vara ekonomiskt hållbara på en global marknad. Spårbarheten i Sydafrika fungerar utmärkt och därför finns det redan viss infrastruktur på plats i landet som skulle kunna vara en grund till att utveckla ett blockchain-baserat system för att öka säkerheten, transparensen och minska administrativa kostnader för de mindre företagen. Ifall ett blockchain-system skulle implementeras skulle det troligtvis inte drivas av de små företagen även fast de hade gynnats mest, utan av större företag med finansiell kapacitet.

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Harraka, Elias. "Contribution a l'etude des possibilites de demetallisation des vins." Université Louis Pasteur (Strasbourg) (1971-2008), 1986. http://www.theses.fr/1986STR13318.

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Ce travail a consiste a etudier et a comparer les principales methodes de demetallisation des vins (fer, cuivre) afin de cerner leurs mecanismes d'action, possibilites techniques, avantages et inconvenients respectifs. Finalement, on peut constater que si le procede de demetallisation a l'aide d'un ligand cyane insoluble (compose de fessler) est seduisant, il comporte d'ineniables inconvenients par rapport au ferrocyanure de potassium qui lorsqu'il est employe dans de bonnes conditions, ne presente guere de danger

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20

Gregersen, Petra. "Etikettdesign som förmedlar smak." Thesis, Linköpings universitet, Medie- och Informationsteknik, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-139009.

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Följande studie syftar till att undersöka hur en rödvinsflaskas etikett kan designas för att attrahera målgruppen millennials och samtidigt förmedla vinets smak. För att göra detta gjordes en undersökning av målgruppens preferenser genom en kvantitativ inledande studie, följt av en förstudie som undersökte tidigare studier och även designteori. I designprocessen användes den insamlade informationen från den inledande studien och förstudien för att ta designbeslut. Tre etikettalternativ togs fram som sedan validerades med målgruppen i form av en fokusgrupp. Fokusgruppen innefattade delar med kvantitativa enkäter samt smaktest. Resultatet av studien visar att ett av de tre alternativen tenderar att attrahera målgruppen mer och samtidigt förmedla vinets smak mer än de andra. Detta alternativ heter Text över hela och har vit text på en svart bakgrund över hela etiketten. Texten är vinets smaknoter, varumärkesnamn, sort, ursprung samt årtal. All text är lika stor med lika marginaler, dock är vissa ord satt i en högre vikt för att öka läsbarheten. Varumärket är även rött för att det ska bli tydligt vad som är namnet på vinet.

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Simbanegavi, Godwishes. "Decision support systems adoption by emerging farmers in the wine industry : a case study of the Western Cape, South Africa." Thesis, Cape Peninsula University of Technology, 2012. http://hdl.handle.net/20.500.11838/2299.

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Thesis (MTech (Information Technology))--Cape Peninsula University of Technology, 2012.
The wine industry is complex hence the farmers and emerging farmers who operate in it are faced with environmental, social and economic constraints. Even though various issues have been pointed out to be contributing to the slow uptake of ICT by emerging farmers (Cox, 1995), McCartney (2007) however pointed out that DSSs can enhance gains in economic, social and environmental benefits. This study investigates how wine farmers use ICTs to support decision making in order to assist emerging farmers adopt and use the ICTs for decision making. Decision making is crucial; it is one of the most important tasks of management in running a successful business (Dralega, 2007). Emerging farmers have to operate in a complex environment and ICT use can lead to the effective use of information to support decision making in the industry. Experienced farmers use ICT tools to support decision making and use information to make informed decisions in their operations. Emerging farmers are at a distinct disadvantage as they have no previous knowledge of farming and have to find their way on a day to day basis. This has the potential of reducing profitability and sustainability of the emerging farmers who have entered the industry. The main research question is: "how can emerging farmers utilise ICT for decision making in the wine industry in the Breede River Valley region in the Western Cape?" Interviews were done to gather primary data. In this case it is information about the technological and information needs of farmers which might help them in decision making. The literature is reviewed in this study to gather secondary data. The study took an inductive approach and the epistemological stance in this study is interpretivism. The case study was used as strategy for the study. The interviewees emphasised the importance of ICTs in their decision making; they mentioned that without the use of ICTs in decision their businesses will crumble. In order to prosper in their business, emerging farmers need to invest in ICTs as this will also assist in improving livelihoods of the farmers and their workers.

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Witikoski, Alan Ricardo. "Os rótulos de cachaça litográficos do Paraná: entre transições tecnológicas e permanências visuais (1930 – 1950)." Universidade Tecnológica Federal do Paraná, 2016. http://repositorio.utfpr.edu.br/jspui/handle/1/2022.

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Este estudo tem como principal objetivo pensar sobre como a construção das visualidades, materializadas nos rótulos de Cachaça litográficos do Paraná, refletem e refratam os acontecimentos históricos, as práticas culturais, as relações de trabalho, as transições tecnológicas e as constituições de estereótipos de gênero, ocorridos durante as décadas de 1930 a 1950. A estrutura do trabalho abrange três momentos: o primeiro relaciona-se ao mapeamento e ao inventário, e posterior catalogação do acervo da Casa da Memória; o segundo, ligado aos trabalhadores e às oficinas litográficas do Paraná, foi realizado a partir de pesquisas bibliográficas e entrevistas com envolvidos no processo litográfico; e o último, constitui-se da análise dos rótulos, orientadas a partir de uma abordagem teórica inspirada em Raymond Williams, Stuart Hall e Jesús Martín-Barbero. Como ferramenta de análise utiliza-se uma proposta semiótica de base peirceana. Os rótulos foram classificados em quatro temáticas: representações de gênero, natureza (paisagens rurais e animais), tecnologia e os tipográficos. Todos foram fichados e, a partir desse material, foram desenvolvidos os textos das análises. Alguns resultados obtidos foram: a inalteração das visualidades dos rótulos, apontando que as imagens compartilhadas pela sociedade têm um processo de transformação que nem sempre coincide com a transformação tecnológica; o processo de transição tecnológica alterou a divisão dos trabalhos nas oficinas; a influência dos meios de comunicação de massa (cinema, rádio e periódicos) nas representações elaboradas pelos litógrafos; e a capacidade dos rótulos em indicar interações, modificações e circulações das tecnologias na sociedade.
This study aims to think about the construction of the visualities, materialized in lithographic Cachaça labels, reflect and refract the historical events, cultural practices, labor relations, technological transitions, the normative gender stereotypes constitutions occurred during the 1930s to 1950s. The structure of the study is divided in three stages: one related to mapping, inventory and subsequent cataloging the material collected; the second on the workers and lithographic workshops of Paraná conducted from bibliographical research and interviews with involved in the lithographic process, and the latter, consists of the analysis of the labels, oriented from a theoretical approach inspired by Raymond Williams, Stuart Hall and Jesús Martín-Barbero. As an analysis tool is used a semiotic proposal of Peirce ́s background. The labels are divided into four themes: gender representations (female and male), nature (rural landscapes and animals), technology and typographic. All are blacklisted and, from this material, the texts of analysis are developed. Some results were: no changes of the visualities labels, pointing out that the images shared by society have a transformation process that does not always coincide with technological change; the technological transition process does not modify the division of work in the workshops; the influence of the mass media (cinema, radio and periodicals); and the ability of the labels to indicate interactions, modifications and circulations of technology in society.

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Rodrigues, José Luís Pereira. "Contribuição da I&D Nacional para a competitividade do Sector Vitivinícola Português." Master's thesis, Instituto Superior de Economia e Gestão, 2010. http://hdl.handle.net/10400.5/2786.

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Mestrado em Economia e Gestão da Ciência, Tecnologia e Inovação
A Investigação & Desenvolvimento e a Inovação de matriz científica são, nos dias de hoje, factores determinantes no sucesso económico de um país e também dos sectores empresariais que o constituem. Estes factores possibilitam que as empresas renovem a sua oferta ao mercado, reestruturem os seus processos tendo em vista a viabilidade económica no médio e longo prazo, contribuindo para o equilíbrio da economia nacional onde se inserem. Tendo presente o impacto do sector vitivinícola na economia portuguesa e a sua evolução recente onde, por um lado, os consumidores expressam desejos de sofisticação e, por outro, se regista a entrada de novos concorrentes alicerçados em estratégias onde a Tecnologia e a Inovação são factores decisivos, é imperioso considerar as actividades de I&D, no quadro das actividades empresariais, como contributo para o aumento da competitividade dos vinhos portugueses nos mercados externo e doméstico. No entanto, pela diversidade de variáveis envolvidas na definição de uma estratégia competitiva de matriz tecnológica, esta não é uma tarefa fácil. É necessário existir capacidade de coordenação de todos os factores críticos para o seu sucesso. Este trabalho concentra-se na relevância do conhecimento científico como input vital ao processo de inovação no âmbito da produção de vinhos de qualidade. Terá por base informação relativa à produção portuguesa de conhecimento em ciência do vinho e também informação relativa à produção e exportação de vinhos portugueses de qualidade, complementada com informação recolhida junto dos Produtores-Exportadores e validada junto da ViniPortugal. Pretende-se, com base nesta informação, testar o contributo do conhecimento científico para a obtenção dos resultados económicos do sector.
The Research & Development and Innovation of scientific basis is nowadays a determinant factor for economic success of a country as also for the success of the economic sectors. These factors allow companies to renew its offer to the market, restructure their processes for the economic viability in the medium and long term, contributing to the balance of the national economy where they operate. Considering the impact of the sector of wine in the Portuguese economy and its recent developments with consumers expressing wishes of sophistication, and new competitors entering supported on strategies relying on technology, it is imperative to define and implement a competitive strategy based on R&D. This strategy must be aligned with business priorities clearly defined in the medium and long term, and contribute to increase the competitiveness of Portuguese wines in domestic and foreign markets. However, due to the diversity of variables involved in the definition of a competitive strategy based on technology is not an easy task. It is necessary to have resources and skills for coordination of all critical success factors. This study focuses on the importance of scientific knowledge as a vital input to the process of innovation in the production of quality wines. It relies on information of Portuguese knowledge in science of wine and also information on the production and export of Portuguese wines of quality, complemented with information collected from the Producers-Exporters and verified with ViniPortugal. The aim is to test the contribution of cientific knowledge to obtain superior economic return for the sector.

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24

Lubkoll, Matti. "A pre-feasibility study of a concentrating solar power system to offset electricity consumption at the Spier Estate." Thesis, Stellenbosch : University of Stellenbosch, 2011. http://hdl.handle.net/10019.1/17809.

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Thesis (MScIng)--University of Stellenbosch, 2011.
ENGLISH ABSTRACT: The Spier Estate - a wine estate in the Western Cape Province of South Africa - is engaged in a transition towards operating according to the principles of sustainable development. Besides changes in social and other environmental aspects, the company has set itself the goal to be carbon neutral by 2017. To this end, Spier is considering the on-site generation of electricity from renewable energy sources. This study was initiated to explore the technical and economic feasibility of a concentrating solar power plant for this purpose on the estate. The investigation was carried out to identify the most appropriate solar thermal energy technology and the dimensions of a system that fulfils the carbon-offset requirements of the estate. In particular, potential to offset the annual electricity consumption of the currently 5 570 MWh needed at Spier, using a concentrating solar power (CSP) system, was investigated. Due to rising utility-provided electricity prices, and the expected initial higher cost of the generated power, it is assumed that implemented efficiency measures would lead to a reduction in demand of 50% by 2017. However, sufficient suitable land was identified to allow electricity production exceeding today’s demand. The outcome of this study is the recommendation of a linear Fresnel collector field without additional heat storage and a saturated steam Rankine cycle power block with evaporative wet cooling. This decision was based on the system’s minimal impact on the sensitive environment in combination with the highest potential for local development. A simulation model was written to evaluate the plant performance, dimension and cost. The analysis was based on a literature review of prototype system behaviour and system simulations. The direct normal irradiation (DNI) data that was used is based on calibrated satellite data. The result of the study is a levelised cost of electricity (LCOE) of R2.741 per kWh, which is cost competitive to the power provided by diesel generators, but more expensive than current and predicted near-future utility rates. The system contains a 1.8 ha aperture area and a 2.0 MWe power block. Operating the plant as a research facility would provide significant potential for LCOE reduction with R2.01 per kWh or less (favourable funding conditions would allow for LCOE of R1.49 per kWh) appearing feasible, which results in cost competitiveness in comparison a photovoltaic (PV) solution. Depending on tariff development, Eskom rates are predicted to reach a similar level between 2017, the time of commissioning, and the year 2025. The downside is that the plant would not solely serve the purpose of electricity offsetting for Spier, which may result in a reduced amount of electricity that may be generated. Further studies are proposed to refine the full potential of cost reduction by local development and manufacturing as well as external funding. This includes identification of suitable technology vendors for plant construction. An EIA is required to be triggered at an early stage to compensate for its long preparation.
AFRIKAANSE OPSOMMING: Die Spier wynlandgoed in die Wes-Kaap Provinsie van Suid-Afrika is tans in ‘n oorgangsfase tot besigheids-praktyke gebaseer op volhoubare ontwikkeling. Afgesien van die sosiale en omgewingsaspekte het die groep hom ook ten doel gestel om koolstof neutraal te wees teen 2017. Ten einde hierdie doel te bereik, moet die maatskappy sy algehele elektrisiteitsverbruik vervang met hernubare bronne. Hierdie studie is dus geloods om die tegniese en ekonomiese uitvoerbaarheid van 'n gekonsentreerde sonkragstasie op die landgoed te ondersoek. Hierdie ondersoek is gedoen om die mees toepaslike sontermiese tegnologie en die grootte van 'n termiese sonkragstelsel te bepaal, wat aan die koolstof vereistes van die landgoed voldoen. Die potensiaal om die jaarlikse elektrisiteitsverbruik van 5 570 MWh met 'n gekonsentreerde elektriese sonkragstelsel te vervang, is ondersoek. Weens die toename in die elektrisiteitsprys en die verwagte hoërkoste van opgewekte elektrisiteit word aanvaar dat die implementering van voorgestelde doeltreffendheidsverbeteringe, sal lei tot 'n afname in die aanvraag na elektrisiteit van tot 50% teen die jaar 2017. Voldoende beskikbare grond is geïdentifiseer om genoeg elektrisiteit te produseer om die huidige vraag na elektrisiteit te oorskry. Die uitkoms van die studie is die aanbeveling van 'n lineêre Fresnel kollektorveld sonder addisionele warmte storing, asook 'n versadigde stoom Rankine sikluskragblok met ‘n nat-verdamping verkoelingstelsel. Die besluit is gebaseer op die stelsel se minimale impak op die omgewing, tesame met die hoogste potensiaal vir plaaslike ontwikkeling. 'n Simulasie is ontwikkel om die aanleg se werkverrigting, grootte en koste te evalueer. Die analise is gebaseer op 'n literatuuroorsig van 'n prototipe stelsel gedrag en stelsel-simulasies. Die direkte normale sonstralings data wat gebruik is, is gebaseer op gekalibreerde satelliet data. Die bevinding van die studie is 'n gebalanseerd koste van elektrisiteit van R2.74 per kWh, wat mededingend is met die koste van elektrisiteit wat deur diesel kragopwekkers verskaf word, maar is aansienlik duurder as die huidige en toekomstige voorspellings van Eskom-tariewe. Die stelsel bevat 'n 1.8 ha son kollektor oppervlakte en 'n 2.0 MWe krag-blok. Daarbenewens, sal die gebruik van die aanleg as 'n navorsingsfasiliteit die potensiaal hê om die gebalanseerd koste van elektrisiteit te verminder na R2.01 per kWh of minder (gunstig befondsing voorwaardes sal gebalanseerd koste van elektrisiteit van R1.49 per kWh tot gevolg hê), wat mededingend is met die koste van 'n fotovoltaïese alternatief. Daar word voorspel dat Eskom-tariewe dieselfde sal bly vanaf 2017, die jaar van inbedryfstelling van die aanleg, tot en met die jaar 2025. Die nadeel is dat die aanleg nie noodwendig uitsluitlik vir die opwek van elektrisiteit vir Spier gebruik sal word nie, en daarom kan dit lei tot 'n vermindering in die hoeveelheid elektrisiteit wat deur die aanleg opgewek word. Daar word voorgestel dat verdere studies onderneem word om die moontlikheid van koste-besparings vir die aanleg te ondersoek deur gebruik te maak van plaaslike ontwikkeling en vervaardiging, asook eksterne befondsing. Dit sluit die identifisering van geskikte tegnologie verskaffers vir die aanleg-kostruksie in. 'n Omgewingsimpakstudie, volgens die EIA regulasies, moet ook so gou as moontlik gedoen word aangesien dit n langsame proses is.

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Heidenreich, Sara. "Blowing in the wind : The socialization of offshore wind technology." Doctoral thesis, Norges teknisk-naturvitenskapelige universitet, Institutt for tverrfaglige kulturstudier, 2014. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-27088.

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The development of renewable energy technologies is a widely acknowledged strategy to address climate change. However, for a successful implementation of technology, socialization, i.e. embedding the technology into society, is crucial. This thesis deals with the socialization of the emerging offshore wind technology in Norway. In particular, it focuses on two potential agents of socialization, news media and scientists. The first paper, Dingpolitik at Sea: Offshore wind energy in the news media discourse, focuses on news media as socialization agents. Siting renewable energy offshore is often considered a solution to implementation problems onshore, as it is “out of sight, out of mind”. By analyzing the Norwegian news media discourse on offshore wind energy, this paper investigates whether moving wind turbines at sea really prevents controversy. It finds that although media coverage is largely positive, still, offshore wind energy is contested mainly within economic, environmental and moral frameworks. Further, values and concerns rather than facts are contested in the media debate, while the technology, in its physical form, is blackboxed. The second paper, Sublime technology and object of fear: Offshore wind scientists assessing publics, and the third paper, Outreaching, outsourcing, and disembedding: How offshore wind scientists consider their engagement with the public, address offshore wind scientists as socialization agents. They study the scientists’ imaginings of the public(s) and their socialization strategies. The findings indicate that the scientists construct ambivalent narratives about the public(s). The continued presence of narratives of a negative public in the context of a technology that is supposed to be “out of sight, out of mind,” could be understood as an act of othering the public. Moreover, most scientists did not embrace their role as agents of socialization. Rather, the strategies of outsourcing the socialization to other actors and of disembedded technology development, i.e. declaring socialization unnecessary, are common. The thesis highlights the important role of the media both as agent of and arena for socialization. Furthermore, considering the hesitance among scientists to act as agents of socialization, it suggests that other actors may be more suitable agents of socialization. It also points to the significance of the “out of sight, out of mind” motive which is used to construct socialization as irrelevant and disembed technology development. Hence, the new trend to produce renewable energy at sea may present new challenges for its socialization.
Utvikling og utbygging av ny fornybar energiteknologi er allmenn anerkjente strategier for å bekjempe klimaendringene. Men for å få til en vellykket implementering, er sosialisering, dvs. forankring av teknologien i samfunnet, avgjørende. Denne avhandlingen tar for seg sosialiseringen av ny offshore vindteknologi i Norge, og fokuserer på to potensielle sosialiseringsagenter, nyhetsmedier og forskere. Den første artikkelen, Dingpolitik at Sea: Offshore wind energy in the news media discourse, fokuserer på nyhetsmedier som sosialiseringsagenter. Plassering av fornybar energi til havs betraktes ofte som en løsning på implementeringsproblemer på land, siden teknologien da er "ute av syne, ute av sinn". Ved å analysere den norske mediediskursen rundt offshore vindkraft, undersøker artikkelen om det virkelig er ukontroversielt å flytte vindturbinene til havs. Den viser at selv om mediedekningen av temaet i stor grad er positivt vinklet, er offshore vindkraft likevel omstridt, særlig innenfor økonomiske, miljømessige og moralske rammer. Videre er det gjerne verdier og bekymringer snarere enn fakta som diskuteres i mediedebatten, mens teknologien, i sin fysiske form, forblir skjult i en «svart boks». Den andre artikkelen, Sublime technology and object of fear: Offshore wind scientists assessing publics, og den tredje artikkelen, Outreaching, outsourcing, and disembedding: How offshore wind scientists consider their engagement with the public, fokuserer på offshore-vind-forskere som sosialiseringsagenter. Artiklene analyserer forskernes sosialiseringsstrategier og deres forestillinger av allmennheten. Funnene tyder på at forskerne konstruerer ambivalente fortellinger om allmennheten. At det stadig knyttes historier om en negativ allmennhet til en teknologi som er ment å være "ute av syne, ute av sinn", kan ses på som en fremmedgjøring av allmennheten. Svært få forskere påtok seg rollen som sosialiseringsagenter, snarere var det vanlig å overlate sosialiseringen til andre aktører, eventuelt å forstå teknologiutvikling som uavhengig av samfunnet og allmennheten. Avhandlingen belyser den viktige rollen mediene har både som arena for sosialisering og som sosialiseringsagenter. Med bakgrunn i at forskerne nøler med å ta på seg oppgaven som sosialiseringsagenter, foreslår avhandlingen at andre aktører kan være bedre egnete til å sosialisere teknologien. Den peker også på viktigheten av "ute av syne, ute av sinn"-motivet, som brukes til å konstruere sosialisering som irrelevant, og til å løsrive teknologiutviklingen fra samfunnet. På den måten kan den nye trenden å produsere fornybar energi til havs skape nye utfordringer for sosialiseringen av teknologiene.

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26

Stahlman, Michael McCann Laura. "Phytase anatomy of an invisible win-win technology /." Diss., Columbia, Mo. : University of Missouri--Columbia, 2009. http://hdl.handle.net/10355/6474.

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Title from PDF of title page (University of Missouri--Columbia, viewed on Feb 18, 2010). The entire thesis text is included in the research.pdf file; the official abstract appears in the short.pdf file; a non-technical public abstract appears in the public.pdf file. Thesis advisor: Dr. Laura McCann. Includes bibliographical references.

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D'Ambrosio, Marco, and Marco Medaglia. "Vertical Axis Wind Turbines: History, Technology and Applications." Thesis, Halmstad University, Halmstad University, School of Business and Engineering (SET), 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:hh:diva-4986.

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In this Master Thesis a review of different type of vertical axis wind turbines (VAWT) and a preliminary investigation of a new kind of VAWT are presented.

After an introduction about the historical background of wind power, the report deals with a more accurate analysis of the main type of VAWT, showing their characteristics and their operations. The aerodynamics of the wind turbines and a review of different type on generators that can be used to connect the wind mill to the electricity grid are reported as well.

Several statistics are also presented, in order to explain how the importance of the wind energy has grown up during the last decades and also to show that this development of the market of wind power creates new opportunity also for VAWT, that are less used than the horizontal axis wind turbine (HAWT).

In the end of 2009 a new kind of vertical axis wind turbine, a giromill 3 blades type, has been built in Falkenberg, by the Swedish company VerticalWind. The tower of this wind turbine is made by wood, in order to get a cheaper and more environment friendly structure, and a direct driven synchronous multipole with permanent magnents generator is located at its bottom. This 200 kW VAWT represents the intermediate step between the 12 kW prototype, built in collaboration with the Uppsala University, and the common Swedish commercial size of 2 MW, which is the goal of the company.

A preliminary investigation of the characteristics of this VAWT has been done, focusing in particular on the value of the frequency of resonance of the tower, an important value that must be never reached during the operative phase in order to avoid serious damage to all the structure, and on the power curve, used to evaluate the coefficient of power (Cp) of the turbine. The results of this investigation and the steps followed to get them are reported. Moreover a energy production analysis of the turbine has been done using WindPro, as well as a comparison with and older type on commercial VAWT.

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Hanegan, Shawn J. (Shawn Joseph). "Advanced flexible wing technology assessment for transport applications." Thesis, Massachusetts Institute of Technology, 1996. http://hdl.handle.net/1721.1/47395.

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Levis, Errikos. "Design synthesis of advanced technology, flying wing seaplanes." Thesis, Imperial College London, 2012. http://hdl.handle.net/10044/1/9943.

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Over the past decades there has been increasing pressure for ever more efficient and environmentally friendly aircraft to be designed. The use of waterborne aircraft could be a means of satisfying those requirements in the future. The aim of the PhD research program presented in this thesis was to develop the methodologies necessary for the preliminary design of large passenger seaplanes and evaluate the performance of such an aircraft compared to the current state of the art. The major technological and operational constraints in designing large waterborne aircraft were identified through an extensive feasibility study. A number of subject areas necessitating further investigation were also identified. To ensure that waterborne takeoff distance requirements are met, a novel initial sizing methodology was generated, relating the aircraft's thrust and lifting characteristics to the takeoff Balanced Field Length. To allow the design of a broad family of aircraft based on a predefined baseline configuration, the seaplane geometry was fully parameterized. The aerodynamic properties of the entire aircraft were determined using a vortex-lattice potential flow solver, written specifically for the configuration being investigated, combined with other commonly used empirical methods. Novel methodologies for estimating the hydrodynamic characteristics of a broad range of parametric hulls were developed using the wealth of experimental hydrodynamic test data available. These methods can be used not only to predict the resistance and trim characteristics of a seaplane throughout the entire takeoff and landing manoeuvre but also give an initial estimate of the attitudes where hydrodynamic instabilities may be encountered. The airborne and waterborne performance characteristics of each resulting aircraft design were estimated using the aforementioned methods. The resulting design synthesis has been integrated into a single algorithm, written in FORTRAN, intended to allow the easy and prompt analysis of any parametric variant of the baseline configuration.

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Hiett, Elmer D. (Elmer Donald). "A State-Wide Survey on the Utilization of Instructional Technology by Public School Districts in Texas." Thesis, University of North Texas, 1990. https://digital.library.unt.edu/ark:/67531/metadc331657/.

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Effective utilization of instructional technology can provide a valuable method for the delivery of a school program, and enable a teacher to individualize according to student needs. Implementation of such a program is costly and requires careful planning and adequate staff development for school personnel. This study examined the degree of commitment by Texas school districts to the use of the latest technologies in their efforts to revolutionize education. Quantitative data were collected by using a survey that included five informational areas: (1) school district background, (2) funding for budget, (3) staff, (4) technology hardware, and (5) staff development. The study included 137 school districts representing the 5 University Interscholastic League (UIL) classifications (A through AAAAA). The survey was mailed to the school superintendents requesting that the persons most familiar with instructional technology be responsible for completing the questionnaires. Analysis of data examined the relationship between UIL classification and the amount of money expended on instructional technology. Correlation coefficients were determined between teachers receiving training in the use of technology and total personnel assigned to technology positions. Coefficients were calculated between a district providing a plan fortechnology and employment of a coordinator for instructional technology. Significance was established at the .05 level. A significant relationship was determined between the total district budget and the amount of money allocated to instructional technology. There was a significant relationship between the number of teachers receiving training in technology and the number of personnel assigned to technology positions. A significant negative relationship was determined between the district having a long-range plan for technology and the employment of a full-time coordinator for one of the subgroups. An attempt was made to provide information concerning the effort by local school districts to provide technology for instructional purposes. Progress has been made, although additional funds will be required in order to realize the full potential of all technologies.

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Geary, Ryan D. "A review of offshore wind technology and the development of the Virginia coastline and outer continental shelf /." Full-text of dissertation on the Internet (1.84 MB), 2009. http://www.lib.jmu.edu/general/etd/2009/Masters/Geary_RyanD/gearyrd_masters_12-10-2009_01.pdf.

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Kidane, Berhane. "Low Power Wide Area Networks based on LoRA Technology." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2017.

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The demand for connected devices, according to the Internet of Things (IoT) paradigm, is expected to grow considerably in the immediate future. Various standards are currently contending to gain an edge over the competition and provide the massive connectivity that will be required by a world in which everyday objects are expected to communicate with each other. Among these standards, Low-Power Wide Area Networks (LPWANs) are continuously gaining momentum, mainly thanks to their ability to provide long-range coverage to devices, exploiting license-free frequency bands. The focus of this thesis is on one of the most prominent LPWAN technologies: LoRa™. First, this thesis establishes a series of models that cover various aspects of a LoRa network. Then, a new Network LoRaWAN Simulator is introduced to simulate a LoRa-based IoT network of four use cases. Finally, the performance of the LoRa system is evaluated and analyzed.

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Welborne, Nathaniel Bryan, Faisal Al-Mahmoud, Khalid Mustafawi, and Cory Pearman. "SCALED MODEL WIND TURBINE WITH ACTIVE FLOW CONTROL TECHNOLOGY." Thesis, The University of Arizona, 2009. http://hdl.handle.net/10150/193022.

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Fridell, Kent. "The wind of change : individuals change when technology change /." Stockholm : Karolinska institutet, 2007.

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Andrews, Samuel Ross. "Chronicling process model construction using World Wide Web technology." Thesis, University of Edinburgh, 2001. http://hdl.handle.net/1842/13507.

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In developing and constructing process models, a large amount of data is generated. This needs to be stored as information by providing context (e.g. description and units), such that it may be accessed and Understood by both human users and computer tools. To be useful, information sets must be chronicled by recording information such as by whom it was generated, when, and using what tool. Links should also be maintained between related sets of information to document the relationship. The World Wide Web (WWW) facilitates the provision of links between documents. It may, amongst other things, be thought of as a globally addressable file system. Accessed by a graphical tool, the browser, it can provide a common user interface to access and interact with documents across disparate operating systems. Documents on the WWW include hypertext links, which enable one document to link to another. This thesis describes an object-oriented system which makes use of the www to chronicle process model construction. The object-oriented paradigm has been used to provide a convenient mechanism for encapsulating data in a structured framework. As well as containing the object data, objects also contain information on who created the object, at what time, etc. This information may be used to generate a browsable history of object creation. Objects are stored as www documents, and may be created, viewed and manipulated using standard browsers. An application programmer's interface has been written which enables the information to be manipulated via Fortran programs. Objects have been developed for standard process engineering entities such as streams, mixtures, components, process topologys, etc. Once created, these may be used to generate simulation models in a variety of formats, e.g. ASPEN, spreadsheet model, etc. Conversely, process objects may be generated from ASPEN models. Four case studies have been included, showing various applications of the system. In conclusion, the www provides a suitable environment for implementing such a system, due to its ease of use, and the fact that it provides both a user interface and enables remote access to the system.

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Connor, Peter Michael. "Strategic development of renewable energy technology in Europe." Thesis, n.p, 2001. http://ethos.bl.uk/.

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Chau, Michael, Hsinchun Chen, Jailun Qin, Yilu Zhou, Wai-Ki Sung, Mark Chen, Yi Qin, Daniel M. McDonald, and Ann M. Lally. "NanoPort: A Web Portal for Nanoscale Science and Technology." ACM/IEEE-CS, 2002. http://hdl.handle.net/10150/105926.

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Artificial Intelligence Lab, Department of MIS, University of Arizona
Areas related to nanotechnology, or nanoscale science and engineering (NSSE), have experienced tremendous growth over the past few years. While there are a large variety of useful resources available on the Web, such information are usually distributed and difficult to locate, resulting in the problem of information overload. To address the problem, we developed the NanoPort system, an integrated Web portal aiming to provide a one-stop shopping service to satisfy the information needs of researchers and practitioners in the field of NSSE [1]. We believe that the approaches taken also can be applied to other domains.

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Ruhela, Vijay 1966. "Effective use of wire-less technology (WT) to enhance productivity in information technology (IT) activity management." Thesis, Massachusetts Institute of Technology, 1999. http://hdl.handle.net/1721.1/29152.

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Thesis (S.M.)--Massachusetts Institute of Technology, System Design & Management Program, 1999.
Vita.
Includes bibliographical references (leaves 79-81).
Several wire-less technologies and devices are in use through out the IT industry currently. An analysis of features of such devices and services is done here. Most of them are used for handling unexpected situations (crisis management) and are not well integrated with the IT project or operations management A temporal analysis of Information Technology (11) processes (projects and operations) in a sector of financial industry in the United States reveals that at least some time delays in IT projects can be eliminated or reduced by effective use of latest digital wire-less technologies in an integrated manner. Further, the author proposes framework for deploying digital wire-less communication devices as an integral part of fast paced IT. A survey of several IT project managers and other decision makers also reveals that use of such technologies when planned, communicated and executed well can bring about considerable competitive advantages.
by Vijay Ruhela.
S.M.

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Ostlind, Jacob Kenneth. "The morphology of space a wind technology center for Montana /." Thesis, Montana State University, 2008. http://etd.lib.montana.edu/etd/2008/ostlind/OstlindJ1208.pdf.

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There is often a logical relationship between what something does and how it is shaped. In biology this is known as morphology-the study of structure or form. The morphology of an organism is a product of environmental conditions and its interaction with that environment. The morphology of space, then, is the study of the relationship between the measurable forces acting on a space and its shape. It is an exploration of the poetic and pragmatic link between environment and design-a search for how a building can be cast by its shadow. The research, observations and images contained in these pages form the foundation for the design of a Wind Technology Center for Montana. Inspired in part by the National Renewable Energy Laboratory's Wind Technology Center near Boulder, Colorado, this facility will provide research services to private companies involved in Montana's current wind energy boom. Additionally, it will conduct grant-funded research into alternative uses of energy generated by wind-an especially relevant topic in Montana, considering our significant wind resources and our limited transmission infrastructure. The site for this project is in the Yellowstone River Valley northeast of Livingston, Montana, one of the windiest places in the state and possibly the nation. The project's program and design will express the forces present on the site (considered to include both the immediate site and Montana as a whole) through the development of system of analysis inspired by studies of morphology and facilitated by digital design techniques. Importantly, the building will also be an icon for wind energy in Montana and a flagship building for sustainability as our culture transitions to a more carbon neutral fuel economy. Located on a highly visible site along Interstate 90, it is positioned to become an architectural icon as well, a facility for exporting both technology and awareness.

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Wohletz, Jerry M. (Jerry Matthew) 1971. "Advanced flexible wing technology assessment for the new strategic airlifter." Thesis, Massachusetts Institute of Technology, 1997. http://hdl.handle.net/1721.1/50307.

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Rashid, Suhail Jeremy. "High voltage packaging technology for wide bandgap power semiconductor devices." Thesis, University of Cambridge, 2008. https://www.repository.cam.ac.uk/handle/1810/252098.

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42

Persson, Björn. "Aeroelastic tailoring of a sailplane wing." Thesis, KTH, Flygdynamik, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-29575.

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In this paper a process for how to perform aeroelastic tailoring of a sailplane wing is described. The analysis was carried out with the aid of a Finite Element solver and the aerodynamic loads were calculated with a potential flow solver. The design parameters of the process were mainly the number of carbon fiber plies and their orientation, but it was also possible to change the geometry of some wing features. A new carbon fiber wing, which was to be fitted onto the sailplane Ventus-2c, was modeled. The performance of the new wing was evaluated in a semi viscous wing analysis program, from which a drag polar was obtained for a number of stacking sequences. Static analyses were run for critical flight cases and stacking sequences to make sure that the wing could withstand the aerodynamic loads. In addition, the natural frequencies and mode shapes of the wing were obtained from a modal analysis. In the paper it is further shown that the fiber angles of the laminates have significant impact on the twist and the aerodynamic performance of the deformed wing. In addition, the static margin was calculated for both the configuration with the new wing and the original Ventus-2c wing.

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Kenny, Hedlund. "Wing-, cube- and aeroelastic simulations inUnicorn." Thesis, KTH, Aerodynamik, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-30237.

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Dillon, Andrew, and Michael G. Morris. "User acceptance of new information technology: theories and models." Medford, N.J.: Information Today, 1996. http://hdl.handle.net/10150/105584.

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This item is not the definitive copy. Please use the following citation when referencing this material: Dillon, A. and Morris, M. (1996) User acceptance of new information technology - theories and models. In: M. Williams (ed.) Annual Review of Information Science and Technology, Vol. 31, Medford NJ: Information Today, 3-32. ABSTRACT: Understanding the factors that influence user acceptance of information technology is of interest both to researchers in a variety of fields as well as procurers of technology for large organizations. The present chapter reviews literature which demonstrates the nature of technological acceptance is mediated by distinct factor groups related to the psychology of the users, the design process of information technology, and the quality of the technology in user terms. It is concluded that current research offers insights that can support the derivation of reliable predictions of user acceptance. However, potentially overlapping theories seem to exist independently of each other and there exists scope for a unifying framework to extend innovation diffusion concepts and systems design models (particularly user-centered design) into a formal theory of user acceptance of information technology.

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Wennergren, Karl Fredrik. "Metal Filling of Through Silicon Vias (TSVs) using Wire Bonding Technology." Thesis, KTH, Mikro- och nanosystemteknik, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-145552.

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Through Silicon Vias (TSVs) are vertical interconnections providing the shortest possible signal paths between vertically stacked chips in 3D packaging. In this thesis, TSVs are fabricated and two novel approaches for the metal filling of TSVs are investigated. A wire bonder is utilized to apply TSV core material in the form of gold stud bumps. The metal filling approaches are carried out by 1) squeezing stud bumps down the TSV holes by utilizing a wafer bonder and 2) stacking stud bumps on the outer periphery of the TSV holes and thereby forcing the material further down. Both approaches have successfully filled TSV holes of varying depths and no voids have been observed. The squeezing approach reaches measured depths of up to 52.9 μm and the stacking approach reaches depths of up to 100 μm.

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Nieradzinska, Kamila. "Multi-technology offshore wind power systems : control and dynamic performance assessment." Thesis, University of Strathclyde, 2017. http://digitool.lib.strath.ac.uk:80/R/?func=dbin-jump-full&object_id=28869.

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This thesis presents a comprehensive study on the operation, principles and theory of wind farms consisting of doubly-fed induction (DFIG) and fully-rated converter (FRC) wind generators working together in a hybrid arrangement. The main objective of this study is to develop control strategies for the hybrid arrangement of wind turbines in order to improve the grid code compliance of the overall wind farm by exploiting the unique characteristics of both technologies to support each other in case of a fault happening. As a result, this thesis presents a novel control strategy for fully rated converter wind generators to improve the fault ride through capabilities of DFIG wind turbines during an AC voltage sag. The developed controller enables the creation of an environment where the FRC and DFIG technologies coexist for the purpose of compliance of grid code requirements. This type of environment can be created in both new wind farm developments and in already deployed DFIG-based wind farms where the addition of FRCs results in the overall improvement of the grid code compliance of the wind farm. The novel controller developed in this thesis uses the FRC to supply reactive power to the hybrid wind farm network during faults with the objective of reducing the magnitude of the voltage dip. This has positive effects in DFIG rotor speed and DC voltage variables during and after the fault period. These variables, as explained in the thesis, play a crucial role in stabilising the dynamic fault ride through capabilities of the turbine. Additionally, the novel controller developed in this thesis does not compromise the integrity of the FRC system. This thesis also contributes to the investigation of hybrid wind farms connected to the main grid using voltage source converter high-voltage direct current (VSC-HVDC) as a mean to increase renewable energy penetration and transmission capacity without affecting voltage stability or power quality of the specific case of the Great Britain’s (GB) network. One main control approach was investigated on the sending-end converter to integrate offshore wind power from hybrid network where all generated power is injected to the point-to-point DC link with a stiff AC bus at the wind farm network. Additionally, two possible connection topologies of future VSC-HVDC were investigated for steady state and transient conditions. The operation of a multi terminal DC network (MTDC) for hybrid offshore wind farms is analysed with power flow studies of a 5-terminal MTDC model regulated by droop control. Finally, this thesis investigates three VSC-HVDC connections schemes designed to transfer 2.4GW of power from two separate Dogger Bank wind farms to the GB grid, in terms of the investment costs, controllability and reliability against expected scenarios. The benefits and drawbacks of all three scenarios are highlighted. These include the benefits of auxiliary cables on AC and DC site of the multi-terminal connections.

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Dykes, Katherine L. 1980. "Dynamics of technology innovation and diffusion with emphasis on wind energy." Thesis, Massachusetts Institute of Technology, 2016. http://hdl.handle.net/1721.1/112625.

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Thesis: Ph. D. in Engineering Systems, Massachusetts Institute of Technology, School of Engineering, Institute for Data, Systems, and Society, 2016.
Cataloged from PDF version of thesis.
Includes bibliographical references.
This thesis takes an interdisciplinary look at wind energy innovation and diffusion through a historical case study and system dynamic quantitative model. The former uses a framework known as actor-network- theory (that allows technical as well social forces to shape historical outcomes) and applies it to an in-depth case study of the history of the technology throughout several époques. Rather than simplifying the story of the technology into a case of winners and losers, as past studies have done, this work demonstrates the complexity of the history of wind technology where many individuals in different countries, companies and national governments, all play a key role in both direct and indirect development of the technology. Without the confluence of activity from these different groups across time and space, the story of wind energy would be very different. In particular, the history shows how the technology develops and diffuses in different regions at different times in different eras, but that traces of each époque survive into the next so that the overall history of wind energy technology has some continuous threads and an accumulation of global learning. This perspective serves as a basis for the development of a system dynamics model of wind energy development and deployment. The model examines the interplay of technology innovation and diffusion dynamics where markets for the technology are local but innovation and learning is global. Wind energy for electricity generation has overcome significant volatility in local markets over the last several decades thanks to the global aggregation of demand from different countries at different times. At the same time, the persistent presence of a market somewhere in the world at any given time has allowed continuous innovation and technology learning to take place. Looking forward, these local and global feedbacks for innovation and diffusion have important implications for the further development of technology and its ability to become a prominent global source of electricity generation.
by Katherine Dykes.
Ph. D. in Engineering Systems

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Pierre, Mikaël. "La « France de l’hémisphère sud » : transférer un modèle viti-vinicole européen en Australie au XIXe siècle." Thesis, Bordeaux 3, 2020. http://www.theses.fr/2020BOR30007.

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Le développement de la viticulture en Australie au XIXe siècle découlait du transfert de modèles européens pour diffuser la production et la consommation de vin dans les sociétés coloniales. Parmi ces modèles, la France se révéla progressivement comme un choix à part, du fait de la réputation de ses vins et de l’influence de ses pratiques culturelles dans le monde britannique. Cette thèse cherche à analyser les transferts de cépages, compétences, technologies et experts de différentes régions françaises vers les colonies australiennes de Nouvelle-Galles du Sud, Victoria et Australie-Méridionale. Ces trois colonies regroupaient alors les principales régions viticoles des antipodes et les traces les plus évidentes d’une présence française. Cette circulation de savoir reposait essentiellement sur les initiatives de colons britanniques aisés dont le but était de développer économiquement et culturellement les colonies. Ce processus illustre l’importance des phénomènes interculturels et transnationaux qui participèrent au façonnement d’une industrie vinicole mondiale au XIXe siècle. Il permet également de révéler la manière dont l’Australie s’appropria ces transferts viti-vinicoles français pour les adapter à son environnement naturel, économique, politique et socio-culturel. Cette thèse, située à l’intersection de l’histoire du vin et de l’histoire transnationale, tente d’apporter une nouvelle perspective sur les effets de la première mondialisation qui facilita la circulation de connaissances, technologies et modèles de production de l’Europe vers les Nouveaux Mondes. Il s’agit de souligner l’importance des échanges interpersonnels et interinstitutionnels à travers les frontières impériales et nationales pour développer agriculture, commerce et savoir scientifique. Ce sujet se propose aussi de questionner la réflexivité des transferts franco-australiens à la façon d’une histoire croisée. C’est dans ce but que ce projet de recherche a été réalisé en France et en Australie, dans une perspective transnationale de croisement des regards entre les mondes francophone et anglophone
The development of viticulture in Australia in the nineteenth century mostly drew on European models to spread both wine production and consumption in the colonial societies during the nineteenth century. Among these models, France gradually appeared as a specific choice due to the reputation of its wines and its cultural practices in the British world. This thesis intends to analyse the transfers of skills, technologies, vine grapes and experts from various French regions to the Australian colonies of New South Wales, Victoria and South Australia. These three colonies collectively represented the most productive wine district during the nineteenth century and the most evident marks of a French influence. This circulation of knowledge mostly relied on wealthy British colonists’ initiatives in order to develop economically and culturally the colonies. This thesis presents new evidence of the importance of the cross-cultural and transnational aspects which shaped the world wine industry in the nineteenth century. It also shows how Australia instigated these transfers of French practices and ideas and reshaped them to fit its natural, economic, political and socio-cultural environment. Overall, this thesis, situated at the intersection of wine history and transnational history, gives a new insight on the effects of the first wave of globalization which facilitated the circulation of knowledge, technologies and production models from Europe to the New World. It highlights the importance of interpersonal and interinstitutional exchanges occurring across national boundaries in the development of agricultural production, commodity trade and scientific knowledge. It also questions Franco-Australian transfers as a reflexivity process peculiar to histoire croisée. As such, this research project has been conducted both in Australia and in France as a transnational investigation mixing perspectives from the English-speaking world and the French-speaking world

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Chan, Yu Hin. "Optimization of metallization and process variables in low temperature wire bonding technology /." View Abstract or Full-Text, 2003. http://library.ust.hk/cgi/db/thesis.pl?MECH%202003%20CHAN.

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Thesis (M. Phil.)--Hong Kong University of Science and Technology, 2003.
Includes bibliographical references (leaves 129-132). Also available in electronic version. Access restricted to campus users.

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Mitchell, Catherine. "The renewable non-fossil fuel obligation : a case study of the barriers to energy technology development." Thesis, University of Sussex, 1994. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.240632.

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Dissertations / Theses on the topic 'Wine technology'

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