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Dissertations / Theses on the topic 'Flour industry'
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Meissner, Daniel J. "Shanghai success a study of the development of the Chinese mechanized flour milling industry, 1900-1910 /." access full-text online access from Digital Dissertation Consortium, 1996. http://libweb.cityu.edu.hk/cgi-bin/er/db/ddcdiss.pl?9622531.
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Wilson, Shellyanne Nicole. "Achieving mix flexibility in the Caribbean flour milling industry." Thesis, University of Cambridge, 2008. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.611991.
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Kvach, John F. "Wheat, wealth and western Maryland the growth and evolution of flour milling in Frederick County, Maryland 1748-1789." Morgantown, W. Va. : [West Virginia University Libraries], 2002. http://etd.wvu.edu/templates/showETD.cfm?recnum=2562.
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Thesis (M.A.)--West Virginia University, 2002.Title from document title page. Document formatted into pages; contains iv, 132 p. : ill., maps. Vita. Includes abstract. Includes bibliographical references (p. 120-127).
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Oberholtzer, Daniel Vincent. "Margin-at-Risk for Agricultural Processors: Flour Milling Scenarios." Thesis, North Dakota State University, 2011. https://hdl.handle.net/10365/29554.
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Historic market volatility has made risk management decisions by firms in the agricultural supply chain more challenging. Market risk measurement methods, such as Value-at-Risk, were developed in the financial industry to objectively measure, and thus better comprehend, market risk's effect on positions. This thesis gives a thorough background of the issues involved with risk measurement. Different scenarios were then used to demonstrate how the risk measurement method can be applied to the agricultural processing margin. In this thesis, the flour milling margin was used to demonstrate how a firm can incorporate sophisticated risk analytics into its risk management decision making process. Multiple scenarios were developed to account for different situations faced by flour millers. Ocean freight, exchange rate risk, futures price risk, basis risk and flour price risk are all included to provide examples of how market risk measurement can be beneficial to industry participants.
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Long, Kristine A. "Acceptance of bread with partial replacement of wheat bread flour by potato products in selected regions of the USSR and USA." Diss., Virginia Tech, 1991. http://hdl.handle.net/10919/39774.
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The purpose of this research was to incorporate a potato product into bread as a partial replacement for wheat flour and to describe a collaborative process for the development of bread products in three Soviet communities. Six potato flake breads and six cooked-mashed potato breads, with and without added gluten, were evaluated in a pilot study. Consumer acceptance scores indicated no significant differences among the twelve bread products. Four bread products, 29% and 45% cooked-mashed potato breads without added gluten, 15% potato flake bread with added gluten, and a 100% wheat flour bread, were selected for objective measurements, descriptive sensory evaluation, and central location acceptance testing.
The four breads were not significantly different in the objective measurements of standing height, percent protein and amino acid content The three potato breads had the highest moisture percent loss on day 1. Texture analysis indicated the 45% bread had the highest texture measurements from the day of baking through day 4. The control "rapid" bread had the lowest analysis of freshness measurements. Staling, as measured by differential scanning calorimetry, indicated the potato breads had significantly reduced staling rates when compared to 100% wheat flour bread.
Eleven trained panelists judged ten characteristics of the control and potato breads. The panelists perceived the potato breads to be more moist than the control. The other sensory characteristics of the control and potato breads were judged as similar.
Central location acceptance testing in Alaska and the Soviet Far East indicated that the potato breads were acceptable and consumers indicated they would buy the breads if they were available. Across all locations the locally purchased control bread was liked significantly less than the potato breads.
A collaborative process was designed for development of food products in Soviet and Alaskan communities.Ph. D.
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Chlapowski, Yolantha Sophie. "Effect of dough conditioners on the bread-making qualities of soft wheat flour." Thesis, Virginia Tech, 1988. http://hdl.handle.net/10919/43964.
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Gillion, Lauren. "Developing a generic hazard analysis critical control point (HACCP) system for the wheat milling industry." Thesis, University of the Western Cape, 2005. http://etd.uwc.ac.za/index.php?module=etd&.
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In South Africa there is a need within the milling industry for controlling food safety especially due to customer's demands and government's regulations. The best way to ensure food safety is with the implementation of a HACCP based food safety system. Therefore, the principal aim of this study was to develop a generic HACCP model for the flour milling industry. Afterwards this generic model can then be adapted for each specific mill and its needs.
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Corte, Vitor Francisco Dalla. "As estratégias e a organização das indústrias de farinha de trigo e de massas alimentícias do Rio Grande do Sul." Universidade Federal de Santa Maria, 2008. http://repositorio.ufsm.br/handle/1/4531.
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The study aims to identify the strategies and the organization of the wheat flour industries and nutritious pastes of Rio Grande do Sul. It is used as theoretical base in the analysis, the production chain, the model structure-conduct-performance (SCP) and Porter s (1980) and Mintzberg s (1988) competitive strategies. In order to
accomplish the research the descriptive method was used, with primary (structured questionnaire applied to the companies) and secondary data. The option of restricting the study to Rio Grande do Sul, was due to the fact that the state to be one of the pioneers and now one of the largest producers of wheat flour and nutritious pastes in the country. The results show that the wheat flour industries and of nutritious pastes are located close to one another in the state most them are of medium and small-size companies. It was also observed that both Brazil and Rio Grande do Sul are not self-sufficient in the wheat production thus, making the importation necessary. The main destination to products is the state itself, but the
vertical integration in the productive chain is still low. It was also verified that the concentration of the industries falls from 2001 to 2006 and that there are barriers to the important entrance for the incoming in the wheat flour sector, as the minimum scale of production, and the capacity already installed of the companies producing nutritious pastes. Concerning Porter s competitive strategies, the production with lower costs is the most outstanding among the companies producing wheat flour, however, among the nutritious pastes it is the differentiation. Among the Mintzberg s typologies, the quality of the product is considered, by both industries, as being the big competitive differential. The performance of the industries in the analyzed period worsened, because there was profitability decrease and market share loss.O estudo em questão visa identificar as estratégias e a organização das indústrias de farinha de trigo e de massas alimentícias do Rio Grande do Sul. Utiliza-se como base teórica na análise, a cadeia de produção agroindustrial, o modelo estruturaconduta-desempenho (ECD) e as estratégias competitivas de Porter (1980) e de Mintzberg (1988). Para realização da pesquisa, utilizou-se do método descritivo, com dados primários (questionário estruturado aplicado às empresas) e secundários. A opção de restringir o estudo ao Rio Grande do Sul justifica-se por ser o estado um dos pioneiros e atualmente o terceiro maior produtor de farinha de trigo e um dos maiores produtores de massas alimentícias em âmbito nacional. Os resultados mostram que as indústrias de farinha de trigo e de massas alimentícias localizam-se próximas no estado, e na maioria são de médio e pequeno porte. Além disso, verificou-se que tanto o Brasil como o Rio Grande do Sul não são auto-suficientes na produção de trigo, necessitando de importação. O principal destino dos produtos das indústrias é o próprio Estado, mas a integração vertical na cadeia produtiva ainda é baixa. Constatou-se também que a concentração das indústrias cai de 2002 para 2006 e que existem barreiras à entrada importantes para os ingressantes no setor de farinha de trigo, como a escala mínima de produção, e para os produtores de massas alimentícias, a capacidade já instalada das empresas. Em relação às estratégias competitivas de Porter, a produção com custos mais baixos é a que mais se destaca nas empresas produtoras de farinha de trigo, já nas de massas alimentícias é a diferenciação. Entre as tipologias de Mintzberg, a qualidade do produto é considerada, por ambas as indústrias, como sendo o grande diferencial competitivo. O desempenho das indústrias no período analisado piorou, pois houve queda de lucratividade e perda de participação de mercado.
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Perseguelo, Franciele Maria. "Sistema APPCC aplicado à farinha de trigo integral." Universidade Tecnológica Federal do Paraná, 2016. http://repositorio.utfpr.edu.br/jspui/handle/1/2157.
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Nos últimos anos a busca por hábitos alimentares mais saudáveis vem crescendo gradativamente e a opção por alimentos integrais participa efetivamente desta tendência. O trigo como fonte de fibras alimentares vem sendo utilizado na forma do farelo de consumo humano, farinha integral ou na composição de pães e massas integrais. Porém, até o momento, poucos alertas são levantados quanto aos contaminantes existentes nas porções externas do grão e se o processamento é capaz de reduzir estes contaminantes a níveis aceitáveis. Neste projeto de pesquisa foram investigadas características de perigos existentes na matéria-prima e/ou processamento, utilizando a sistemática mundialmente aplicada e conhecida como Análises de Perigos e Pontos Críticos de Controle (APPCC). O projeto foi desenvolvido em moinho de trigo onde as Boas Práticas de Fabricação (BPF) e o Manejo Integrado de Pragas (MIP) já estavam implementados. A metodologia APPCC foi desenvolvida após revisão dos Programas de Pré-Requisitos, descrição detalhada do processo produtivo e análises exploratórias/confirmatórias em pontos estratégicos, seguindo para a aplicação dos sete Princípios teóricos do Sistema. Com os resultados das análises exploratórias constatou-se que as etapas do processamento retiraram grande parte dos contaminantes presentes no trigo in natura, originando uma farinha integral com parâmetros físicos, químicos e microbiológicos, de acordo com a legislação vigente. Com a Análise de Perigos e Pontos Crítico de Controle aplicado à produção de farinha de trigo integral, foi constatado que o processamento reduz os contaminantes presentes no trigo a níveis aceitáveis, desde que os três PCCs identificados nas etapas de peneiramento (Turbo-Peneira) e transporte (Filtro e Detector de Metais) sejam corretamente monitorados. Na aplicação da árvore decisória não foram constatados pontos críticos de controle (PCC) para o insumo Trigo.In recent years the search for healthier eating habits is growing gradually and the choice of whole grain foods is included in this trend. Wheat as a source of dietary fiber has been used in the form of wheat bran, whole wheat flour or as part of the composition of whole wheat bread and pasta. However, so far, few alerts are raised regarding the contaminants in the external portions of the grain, and the possibility of the processing reduces these contaminants to acceptable levels. In this research project, hazard characteristics were investigated in the grain and/or processing, through the systematic applied worldwide and known as Hazard Analysis and Critical Control Points (HACCP). The project was developed in a wheat mill where the Good Manufacturing Practices (GMP) and Integrated Pest Management (IPM) were already implemented.The HACCP methodology was developed after review of Prerequisite Programs, detailed description of the production process and exploratory/confirmatory analysis at strategic points, then moving to the application of the seven theoretical System Principles. The results of exploratory analyzes found that processing steps removed most of the contaminants in wheat, yielding a whole wheat flour with safe physical, chemical and microbiological parameters, in accordance with current legislation. The Hazard Analysis and Control Point Critical system were applied to the production of whole wheat flour, it was found that the processing reduces contaminants in wheat at acceptable levels, provided that the three points of control present in sieving (Turbo Sieve) and transport (filter and Metal Detectors) are monitored properly. In the decision-tree approach was not found critical control points (CCP) for wheat storage.
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Dionizio, Amanda Salgado. "Efeito do camu-camu microencapsulado e liofilizado na reologia da massa e na qualidade do pão de forma." Universidade Tecnológica Federal do Paraná, 2017. http://repositorio.utfpr.edu.br/jspui/handle/1/2195.
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CAPESO camu-camu (Myrciaria dúbia H. B. K. (McVaugh)) é um fruto nativo da região amazônica, reconhecido por um alto teor de vitamina C, fonte de compostos fenólicos, antocianinas e antioxidantes. Em função do seu potencial de ácido ascórbico, estudos são conduzidos com o objetivo de agregar valor a fruta como aditivo alimentar. Por isso, o presente trabalho tem por finalidade a avaliação do uso da polpa de camu-camu microencapsulada e liofilizada nas características tecnológicas da farinha de trigo e na qualidade do pão de forma, pelos métodos da caracterização físico-química e microencapsulação da polpa, avaliação físico-química do liofilizado e microencapsulados, sua eficiência, rendimento e estabilidade (25 e 45ºC), o efeito do liofilizado e microencapsulados nas propriedades da farinha, no volume especifico e nos atributos sensoriais do pão de forma. A polpa de camu-camu apresentou elevados teores de ácido ascórbico, compostos fenólicos totais e atividade antioxidante. O liofilizado contém maior teor de umidade, higroscopicidade e compostos bioativos em comparação aos microencapsulados. Com a análise da eficiência da encapsulação, verificou-se que a maltodextrina foi o mais eficiente, para o rendimento, a dextrina lactato obteve maior valor de compostos fenólicos e a maltodextrina do ácido ascórbico. A estabilidade se manteve maior à temperatura de 25ºC, entretanto analisando ambas as temperaturas, a dextrina lactato, mostrou-se como o melhor material protetor. A presença do camu – camu provocou mudanças nas características das farinhas de trigo, porém ocorreu o fortalecimento da rede de glúten da massa, tornando as massas mais curtas em relação ao controle. Os pães não diferiram sensorialmente, exceto no atributo aparência e intenção de compra do pão com camu – camu microencapsulado com dextrina lactato que foi o de maior pontuação e o preferido pelos avaliadores. A adição dos derivados de camu – camu nos pães provocou aumento de seus volumes específicos, dos compostos bioativos e da retenção de ácido ascórbico no produto final.
The camu-camu (Myrciaria dubious H. B. K. (McVaugh)) is a native fruit of the Amazon region, recognized by a high content of vitamin C, source of phenolic compounds, anthocyanins and antioxidants. Due to their potential ascorbic acid, studies are conducted with the objective of adding value to fruit as a food additive. Therefore, the present work has the purpose of evaluating the use of microencapsulated and lyophilized camu-camu pulp in the technological characteristics of wheat flour and in the quality of bread form, by the methods of physicalchemical characterization and microencapsulation of pulp, evaluation (25 and 45ºC), the effect of the lyophilized and microencapsulated in the properties of the flour, the specific volume and the sensorial attributes of the bread of form. The camu-camu pulp presented high levels of ascorbic acid, total phenolic compounds and antioxidant activity. The lyophilizate contains higher moisture content, hygroscopicity and bioactive compounds compared to microencapsulated ones. With the analysis of the efficiency of the encapsulation, maltodextrine was found to be the most efficient for yield, lactate dextrin obtained higher value of phenolic compounds and maltodextrin of ascorbic acid. The stability remained higher at 25 °C, however analyzing both temperatures, lactate dextrin, proved to be the best protective material. The presence of camu - camu caused changes in the characteristics of wheat flour, but the gluten network of the mass was strengthened, making the pasta shorter in relation to the control. The breads did not differ sensorially, except in the attribute appearance and intention to buy the bread with camu - camu microencapsulated with dextrin lactate that was the one with the highest score and the one preferred by the evaluators. The addition of the camu - camu derivatives in the breads provoked an increase in their specific volumes, the bioactive compounds and the retention of ascorbic acid in the final product.
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Kamoy, Leyla. "An Investigation On The Lighting Systems Of The Manufacturing Floor In Electronics Industry." Master's thesis, METU, 2010. http://etd.lib.metu.edu.tr/upload/3/12611615/index.pdf.
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Required illumination levels in an electronics manufacturing facility were studied in order to provide feedback for architects and engineers. The study was carried out for the
production floor of an electronics company in Ankara.
The space considered was a Printed Circuit Board Assembly (PCBA) and Surface Mount Device (SMD) production department. The selected area was subdivided into different
areas according to required illumination levels for each year. These levels were determined according to the specific work types over the total area according to each individual department. Data compiled by the field survey was analyzed and evaluated for investigating the relation of the potential effectiveness of the lighting systems regarding time, together with illumination levels needed for specific work areas. Changes in the sizes of areas needing various illuminance levels over past years were analyzed. It was found that there had been a decrease in the total required illumination levels.
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deMatos, Richard Bernard. "Floor limits and credit card fraud in the South African credit card industry." Thesis, University of South Africa, 2007. http://hdl.handle.net/10500/48.
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Credit card fraud losses within the South African credit card market in 2006 exceeded
R257M. A portion of these losses (R179M) are within the borders of South Africa and its
common monetary area partners. This represents a startling 70% of credit card fraud on
magnetic stripe cards used within the borders of South Africa.
The South African credit card industry adopts floor limits at certain merchants and
merchant categories. South Africa is one of a few countries in the world that still adopt
floor limits on credit cards within its payment card industry. Credit card transactions on
magnetic-stripe cards conducted below the merchant’s designated floor limit do not go to
the issuing bank for authorization. The first time the issuing bank acknowledges these
transactions is when they are settled on average two days later. The rationale for not
adopting zero floor limits within the South African credit card market is the supposed
inability of the existing telecommunications infrastructure to handle the volume and
frequency of data submitted by merchants for authorization. The impact of reduced fraud
and bad debt losses through adopting a zero floor limit in relation to merchant
operational costs is the basis of the research. The research also aims to examine the
Proposition that the existing telecommunications infrastructure is unable to support a
zero floor limit proposal.
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Gomez, fernandez Mario Andres. "Synthèse des composés biologiquement actifs en utilisant des réactions photochimiques." Thesis, Reims, 2018. http://www.theses.fr/2018REIMS009.
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En industrie chimique, on cherche continuellement des molécules biologiquement actives essentiellement pour les domaines pharmaceutique et agrochimique. De plus en plus les exigences à ces produits deviennent dures. Elles concernent, par exemple, les activités secondaires ou l'écotoxicité. En conséquence, un grand nombre de structures doit être testé pour trouver des composés actifs remplissant les propriétés imposées. En parallèle, les capacités dans l'industrie pour tester un grand nombre de composés différents en peu de temps ont considérablement augmentées. En conséquence, l'industrie cherche des nouvelles méthodes de synthèse pour accéder rapidement à une plus grande variété des structures moléculaires.Dans ce contexte, l'industrie chimique et pharmaceutique s'intéresse fortement aux réactions photochimiques appliquées en synthèse organique. Ces réactions permettent de synthétiser des composés en grande variété structurale inaccessibles par la synthèse organique conventionnelle. Les produits des réactions photochimiques sont une partie de l’espace chimique qui n’a pas encore été complètement exploré pour la recherche des structures avec de l’activité biologique.Dans les travaux de thèse presentés nous nous sommes interessés d’abord à la photocycloaddition [2+2] entre un groupement carbonyl et un alcène, la réaction de Paternò-Büchi. Nous avons utilisé cette reáction pour obtenir des oxétanes qui possèdent des groupements intéressants en agrochimie et au même temps des sites clés qui permettront d’autres transformations lors des étapes ultérieures. Par la suite nous avons exploré la réaction de Paternò-Büchi avec des alcènes fluorés. Les résultats ont été très encourageants. Nous avons découvert une nouvelle famille d’oxétanes fluorés très stables. Au vu de ses propriétés, ces produits peuvent être utilisés comme des pour l’obtention des composés biologiquement actifs. D’autre côté, une nouvelle reactivité photochimique a été découverte : il s’agit d’une réaction Photo-Wittig analogue. Cette reactivité chimique dépend des substituants sur le carbonyl. Nous pensons que cette réactivité chimique est directement liée à l’état excité du carbonylIn life sciences, there is a continuos research for new biological active molecules, this is true for both pharmaceultical industry and agrochemical industry. In the last years regulations have become more and more severe. In recent years, the technology for the test of new chemical compounds in industry has considerably evolved. Nowdays it is possible to test a vast number of compounds for the screening of biological activity in a short time. This means that industry is searching for new methodologies that allow the obtention of diverse chemical structures that can present biological activity.In this context, chemical industry, in particular, pharmaceutical and agrochemical industry are interested in the use of photochemical reactions in organic synthesis. Photochemical reactions allow the obtention of a variety of complex structures that are not easily obtained by classical methods. This chemical space has not been completly explored in the search of biological active compounds.In the works presented in this PhD research we first explored the [2+2] photocycloadtion of a carbonyl compound to an olefin, the called Paternò-Büchi reaction. We succesfully applied this reaction to obtain oxetanes wich posses agro-like substituents and key sites for further functionalization, a requirement demanded in industry. We also explored the use of fluorinated olefins in this photoreaction. The results are very promising: we discovered a new family of stable fluorinated oxetanes. These compounds can be used cas molecular scaffolds for the obtention of biological active compounds. At the same time, we discovered a new photochemical reactivity: a Photo-Wittig like reaction. This new reactivity depends on the substitution pattern of the carbonyl group. We hypothesize that the new reactivity depends on the excited state of the carbonyl compound
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Coopey, Richard. "Structures of control : the changing role of shop floor supervision in the U.S. automobile industry, 1900-1950." Thesis, University of Warwick, 1988. http://wrap.warwick.ac.uk/3966/.
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The thesis is based on a longitudinal study of the automobile industry in the U.S.A. from its inception around the turn of the century, to the 1950s. Charting the changes in methods of production, organisational structure, demography and skill configurations among the workforce, and institutional and political formations at the workplace, the study focuses upon the meaning of these developments in terms of the control of work and the personnel directly involved in that control - the changing role of foremen in 20th century industry. Using a range of sources including contemporary governmental and industrial surveys, company and trade union records and oral histories, a picture is built up of the way in which methods of production, and the control of that production, are mediated through a series of social, demographic, spatial and ideological factors, in all of which the foreman is a central character. In examining the role of shop floor supervision in shaping workers experience and actual structures of control at the workplace, and showing how the experience of foremen, individually and as a group, in turn are affected by changing patterns of work, the thesis constructs a historical modification to accounts of the labour process which stress a progressive, teleological exodus of control from the shop floor. The study points out for example, that the role of shop-floor supervisor during the inter-war period, largely supposed to have been proscribed and marginalised by technological and bureaucratic developments, remained in fact the focal point of control over hiring, firing, wage levels, production levels and methods of work, in short almost all aspects of the industrial workers' experience of factory life. Having established the boundaries of power and control surrounding the foreman in pre-war mass production, and discussed the meaning of these boundaries in terms of class, ideology and divisions among the workforce, the thesis then examines the origins and effects of unionisation on the role of supervision. Following an account of the restructuring of power and control which comes with the establishment of production workers unions in the industry, the advent of the unionisation of foremen themselves is examined. The Foremen's Association of America (FAA), which saw its genesis and principal area of recruitment in the automobile industry, represented the most serious attempt to organise supervisory workers in the USA this century, and marks a pivotal point in the spread of unionisation, managerial response and state intervention in industrial relations. Building on earlier sections outlining the position of foremen in terms of power and ideology, the thesis proposes a complex, multi-level dynamic behind the formation, growth and decline of the FAA as a corrective to previous accounts which stress the primacy of legislative and institutional explanatory frameworks. Finally the thesis charts the post-war response of management in the industry to the threat of foremen's unionisation, locating ensuing attempts to restructure the role, status and prestige of foremen in terms of the historical impact and progress of competing managerial theory, in particular that of the human relations school.
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Samarakoon, Mudiyanselage Gayani Piyankara Kumari Samarakoon. "Female shop floor worker voice in the corporate social responsibility agenda of the Sri Lankan apparel industry." Thesis, Queensland University of Technology, 2022. https://eprints.qut.edu.au/236612/1/Samarakoon_Mudiyanselage_Thesis.pdf.
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Corporate social responsibility (CSR) initiatives are used to respond to and deflect criticism regarding unfair labour standards in Global South production sites. This study, focusing on Sri Lankan apparel industry, reveals that Global South apparel suppliers deploy CSR initiatives as a political strategy to diffuse female workers’ consciousness of their exploitation, and as a lived shopfloor practice to co-opt workers in managerial agendas. Adopting theories of intersectionality, hegemony, and labour process, and deploying an interpretive, qualitative methodology, this thesis exposes the implicit and explicit exclusion and suppression of female worker voice in the CSR agenda of global production sites.
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Rosales, Vizuete Jonathan P. "IIoT based Augmented Reality for Factory Data Collection and Visualization." University of Cincinnati / OhioLINK, 2020. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1592136317716895.
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Arias-Mesía, Luz-Natalia, and Felícita-Noelia Zapata-Yarlequé. "Estudio de prefactibilidad para la instalación de una planta para la elaboración de galletas enriquecidas con harina de algarroba (Prosopis pallida)." Bachelor's thesis, Universidad de Lima, 2017. http://repositorio.ulima.edu.pe/handle/ulima/4266.
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El presente estudio de prefactibilidad tiene como objetivo
principal establecer y demostrar la viabilidad de mercado, tecnológica, económica y financiera para la instalación de una planta de elaboración de galletas enriquecidas con harina de algarroba (Prosopis Pallida) para consumo masivo; ofreciendo un producto cuya ventaja competitiva se basa en la diferenciación del producto, resaltando las
principales características nutricionales de la harina de algarrobaThe present prefeasibility study has as its main objective to establish and demonstrate the commercial, technological, economic and financial viability for the installation of a production plant of cookies enriched with carob flour (Prosopis Pallida) for mass consumption; offering a product with a competitive advantage based on product differentiation, highlighting the main nutritional characteristics of the carob flour.
Trabajo de investigación
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Hansson, Henrik. "TREATMENT OF WASTEWATER GENERATED BY WOOD-BASED DRY INDUSTRIES: ADVANCED OXIDATION PROCESSES & ELECTROCOAGULATION." Doctoral thesis, Linnéuniversitetet, Institutionen för biologi och miljö (BOM), 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:lnu:diva-36437.
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Wood is a material with an enormous number of applications. For decades, the development of wastewater treatment technologies tailored for the wood sector has focused on those industries that have water as an integral part of the industrial production, such as paper and pulp. However, there is a large and potentially growing sector that has been neglected, which is formed by industries in which water is not part of their production line, as for example, the wood floor and furniture industries (named wood-based dry industries). These industries still produces relatively low volumes of highly polluted wastewaters, with COD up to 30,000 mg/L, due to cleaning/washing procedure (named cleaning wastewaters). These cleaning wastewaters are often sent to the municipal wastewater treatment plant after dilution with potable water. Once there, recalcitrant pollutants are diluted and discharged into recipient water bodies or trapped in the municipal wastewater sludge. Another type of contaminated water these “dry industries” often generate in high volumes, and which is usually discharged with no previous treatment, is storm-water containing contaminants that have leached from large wood storage areas. The overall aim of this thesis was to increase the level of knowledge and competence and to present on-site wastewater treatment options for wood-based dry industries using the wood floor industry as a case-study, with a focus on combined treatment methods and solutions applicable to both the cleaning wastewater and storm-water. Among the treatment technologies investigated, electrocoagulation was studied both as a standalone treatment and combined with sorption using activated carbon. The combined treatment achieved a COD reduction of approximately 70%. Some advanced oxidation processes (AOP) were also studied: a COD reduction of approximately 70% was achieved by photo-Fenton, but the most successful AOP was ozone combined with UV light, were a COD reduction around 90% was achieved, with additional improvement in the biodegradability of the treated effluent. Ozone also proved to be effective in degrading organic compounds (approximately 70% COD reduction) and enhanced the biodegradability of the storm-water runoff from wood storage areas. The results have shown that the application of ozone can be considered an option for treatment of cleaning wastewaters and possibly for storm-water biodegradation enhancement.Trä är ett material med ett stort antal möjliga användningsområden. Inom träindustrin har utvecklingen av vattenbehandlingsmetoder varit inriktat på de branscher som har vatten som en del av produktionen, såsom papper- och massaindustrin. Men det finns en stor och potentiellt växande sektor inom träindustrin som har försummats, den utgörs av industrier som inte har vatten som en del av produktionen, t.ex. trägolv och trämöbel industrier. Trots detta så producerar dessa industrier fortfarande relativt kraftigt förorenade avloppsvatten med t.ex. COD-värden upp till 30000 mg/l men i relativt låga volymer. Dessa avloppsvatten uppkommer vid rengöring av maskiner och städning av lokaler, varefter de oftast efter utspädning med dricksvatten skickas till det kommunala reningsverket. Väl där späds det förorenade vattnet vidare ut med annat inkommande vatten men passerar dock till stor del obehandlat och släpps ut i mottagande vattendrag eller så fastnar föroreningarna i avloppsslamet. Dagvatten är en annan typ av förorenat vatten från dessa "torra industrier" som ofta genereras i stora volymer och innehåller föroreningar som lakats från de trämaterial som förvaras i de stora upplag som ofta förekommer vid denna typ av industrier. Det övergripande syftet med avhandlingen var att öka kunskapen och kompetensen för att kunna miljömässigt riktigt och ekonomiskt billigt behandla industriavloppsvatten lokalt på plats inom trävaruindustrin, genom att använda en trä-golvsindustri som fallstudie. Fokus lades på kombinerade behandlingsmetoder och lösningar som skulle kunna vara lämpliga både för industriavloppsvatten och dagvatten. Ett antal behandlingstekniker har undersökts; elektrokoagulering studerades både som en fristående behandling och i kombination med aktivt kol. Den kombinerade behandlingen gav en COD-reduktion på ungefär 70 %. Flera avancerade oxidationsprocesser (AOP) studerades också, och en COD-reduktion på cirka 70% uppnåddes med en kombination av UV-ljus och Fenton behandling. Den mest framgångsrika behandlingen var ozon i kombination med UV-ljus där en COD-reduktion runt 90 % uppnåddes varvid en avsevärd förbättring av den biologisk nedbrytbarhet på det behandlade avloppsvattenet erhölls. Ozon visade sig också vara effektivt för nedbrytning av organiska föreningar (ca 70% COD reduktion) och förbättrade den biologiska nedbrytbarheten av föroreningarna i dagvattnet från den studerade industrin. Resultaten har visat att ozon kan anses vara ett lämpligt alternativ för att behandla industriavloppsvatten inom trävarusektorn och möjligen för att öka den biologiska nedbrytbarheten av dagvattnet från dessa industrier
Integrated Approach for Handling of Industrial Wastewater and Stormwater
Triple Helix Collaboration on Industrial Water Conservation in Småland and the Islands
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Bestjak, Linnea, and Cassandra Lindqvist. "Assessment of How Digital Twin Can Be Utilized in Manufacturing Companies to Create Business Value." Thesis, Mälardalens högskola, Akademin för innovation, design och teknik, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:mdh:diva-48161.
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Introduction The paradigm shift in manufacturing that Industry 4.0 brings forth with new advanced technologies and the rapid growth of sensing and controlling technologies enable further visualization and optimization that can contribute to achievingimproved decision-making in manufacturing. A significant new capability is the ability to construct a Digital Twinthat connects the physical and virtual space. However, there are still confusion and obscurity regarding what Digital Twinis and how it can becreated and then used to create value for the company. Therefor the purpose of the thesis is to examine how manufacturing companies can utilize the implementation of Digital Twinand assess Digital Twinin a shop-floor. ➢RQ1: How can DT be beneficial to increase business value in a manufacturing company? ➢RQ2: What changes need to be done in the shop-floor to implement Digital Twin? Methodology A literature review was conducted to provide previous researchand contextwithin the area of Digital Twin. A multiple-case studywas performed at three case companies to gain meaningful insight from a real-world perspective, semi-structured interviews, dialogs, and observations were conductedat the case companies. The analysis was then performed by examining similarities, and dissimilarities between theoretical and empirical data, as well as opportunities in theoretical findings that correspond with challenges in empirical findings. Frame of Reference The literature review increased the authors’ understanding of the research topic and gave context to the concept of Digital Twin. The review is mainly focused on the Digital Twintechnologyand how it is constructed, as well as the applicationsareas. Empirical Findings The empirical findings provide an overview of boththe current and future state of the case companies in relation to organizational, operational, and technological factors. Additionally, it provides a deeper understanding of how shop-floor management is designed at one of the case companies. Analysis The combination of the Frame of Reference and Empirical Findings contributewith important insight on the potential benefits that can be created through the utilizationof Digital Twin, as well as what is requiredin the shop-floor to enable implementation ofDigital Twin. Conclusions The value that can be created utilizing Digital Twinis outlinedand a clearer definition is proposed to avoid misunderstandings and confusion. Requirements that need to be achieved for a successful implementation arecovered as well. A future recommendation is measuring resources and effort in relation to the created value of a Digital Twin.
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Tavares-Furtado, Artur. "Contribution à l'analyse territoriale des flux de matières en présence d'incertitudes : modélisation à base de logique floue." Troyes, 2008. http://www.theses.fr/2008TROY0006.
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L’objectif de cette thèse est de proposer une modélisation à base de logique floue en vue d’améliorer l’analyse territoriale des flux de matières en présence d’incertitudes sur les données. La méthodologie proposée, se décompose en trois étapes de modélisation. La première, est relative aux études préparatoires de définition du système et de traitement des données d’entrées. La seconde, correspond à la simula-tion et aux analyses des résultats du modèle, notamment l'estimation d'incertitude, la déter-mination des variables les plus influentes et l'analyse de sensibilité. Enfin, la dernière est consacrée à la finalisation du modèle en vue de son exploitation pour la prise de décision. Les deux premières étapes s’enchaînent selon un processus en boucle jusqu'à ce que l'analyste décide de le terminer selon des critères qu’il aura au préalable définis. Cette méthodologie a été testée sur deux modèles, l’un en statique et l’autre en dynamique. Pour réaliser la simulation, un programme a été conçu au cours de la thèse à l’aide du logiciel MATLAB. Le programme permet de simuler des modèles statiques et dynamiques et d’effectuer des études des comportements d'un système donné selon différentes typologies de varia-bles : exactes, floues et mixtes (avec des lois d’appartenances variées pour les variables floues). Deux études de cas issus de la littéra-ture ont été modélisées puis simulées en vue d’effectuer une analyse de sensibilité, d’incertitude et d’influence des variables exo-gènesThe objective of this thesis is to propose a fuzzy logic based modelling in order to improve re-gional material flow analysis taking in account data uncertainties. The proposed methodology is executed in three modelling stages. The first one concerns pre-liminary studies of system definition and input data treatment. The second corresponds to simulation as well as analysis of the model re-sults, namely, estimation of uncertainty, deter-mination of most influent variables, and sensi-tivity analysis. Finally the third stage is con-cerned with finalizing the model for its exploi-tation as a tool for the decision-making. The first two stages are executed in loop until the analyst decides to end the modelling process according to the criteria initially fixed. The methodology was tested on two models, one static and the other dynamic. To carry out the simulation, a program was developed during the realisation of this thesis using MATLAB software. The programme is able to simulate static and dynamic models and to carry out studies of system behaviours with various variables typologies: crisp, fuzzy, and mixed (with varying membership functions for fuzzy variables). Two study cases from litera-ture were modelled and then simulated in or-der to study the analysis of sensitivity, uncer-tainty, and influence of exogenous variables
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Mashonganyika, Oswald. "The relationship between job satisfaction and absenteeism : a study of the shop floor workers in a motor manufacturing plant." Thesis, Rhodes University, 2004. http://hdl.handle.net/10962/d1007518.
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This research hypothesises a statistical positive significant correlation between job satisfaction and absenteeism among the shop floor workers of a motor manufacturing plant in the impoverished province of the Eastern Cape in South Africa. According to the literature review, two schools of thought exist that argue on the nature of the relationship. One believes that absence from work is in some way a natural consequence of job dissatisfaction, i.e. arguing for a job satisfaction-absenteeism relationship. The second one argues for a no relationship, arguing that absence is a result of habitual behaviour and or behaviours influenced by socioeconomic factors such as poverty that affect the employees' ability and pressure to attend work. A sample of 150 workers was randomly selected from the 2500 shop floor workers. The Job Descriptive Index (lDI) questionnaires were used to measure the satisfaction index of the workers. The absence statistics for the sample workers were gathered from the organisation's Human Resources department and statistical tests for correlation and regression were conducted on the two variables - lDI and absence data. Contrary to the expectations of the study, the results showed that overall job satisfaction and absenteeism were not correlated. It concluded that the job dissatisfaction theory of absenteeism is empirically unsupportable and alternative conceptualisations of absence contributors and potentially fruitful research strategies are discussed.
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Campos, Mario Cesar Mello Massa de. "La simulation dynamique et l'intelligence artificielle pour l'élaboration de stratégies de contrôle-commande multivariable flou : application à une unité de craquage catalytique en phase fluide." Châtenay-Malabry, Ecole centrale de Paris, 1997. http://www.theses.fr/1997ECAP0544.
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Une méthodologie pour l'élaboration de stratégies de contrôle-commande multivariable flou a été développée, et mise en œuvre dans une application pour la supervision d'une unité de craquage catalytique à lit fluidisé. La méthodologie retenue pour ce faire s'appuie tout d'abord sur la mise au point d'un simulateur dynamique de la zone de réaction du procédé. Ce simulateur permet d'aider à la construction de la base de connaissance du contrôle-commande multivariable flou, et d'assister à la définition du préréglage du système. Ensuite, une approche de conception de la commande floue, basée sur un réseau de neurones, a été mise au point. Ce système permet d'affiner un ensemble de règles initialement fourni de façon que la commande puisse atteindre un niveau de performance comparable, voire supérieur, à ceux obtenus par des opérateurs humains. La méthodologie, qui a été présentée ici, intégrant la logique floue et les réseaux de neurones, semble avoir de bonnes perspectives pour développer l'implantation des systèmes flous dans l'industrie pétrochimique.
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Schwarzenbach, Walter. "Interactions des atomes de fluor et des radicaux d'un plasma de CF4 avec une surface de polymère." Université Joseph Fourier (Grenoble), 1999. http://www.theses.fr/1999GRE10050.
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Nous avons applique la technique de spectrometrie de masse par ionisation pres du seuil a la detection des radicaux issus d'un plasma micro-onde de cf 4. Nous presentons une methode de mesure de leurs concentrations absolues. Notre interet s'est focalise sur les atomes de fluor f, detectes pour la premiere fois grace a ce type de diagnostic. Les radicaux cf x (x = 1 3) sont egalement detectes. Dans nos dispositifs et conditions experimentales, nous avons pu etudier les interactions des radicaux avec une surface d'hexatriacontane (htc), modelisant le polyethylene. Le coefficient de collage des atomes de fluor sur ces surfaces a ete estime par des mesures de cinetique dans la post-decharge du plasma module. La concentration absolue de fluor moleculaire f 2 a ainsi pu etre determinee. Nous avons par ailleurs etudie la vitesse de gravure du polymere sous l'action des atomes de fluor ainsi que l'influence d'echantillons d'htc ou de silicium places dans le plasma sur la densite des radicaux. Les resultats obtenus ont apporte deux grandes conclusions. D'une part le fluor atomique est le principal responsable des processus de gravure de l'htc : les atomes de fluor fixes sur cette surface induisent la desorption de molecules cf x et hf. D'autre part, les rayonnements vuv du plasma accroissent la reactivite de la surface de polymere vis-a-vis des atomes de fluor. Ceci a pu etre demontre grace a l'utilisation d'une lampe vuv emettant des photons jusqu'a une longueur d'onde de 115 nm.
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Dabhilkar, Mandar. "Mot balanserad styrning i teamorganiserad produktion." Licentiate thesis, KTH, Industrial Economics and Management, 2003. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-1670.
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During the 1990s two contrasting paths to the organization of work have emerged in the Swedish engineering industry: the structure-conservative and structure-innovative. This thesis deals with the latter, and focuses primarily on necessary changes in management control systems that support structureinnovative forms of team-organized work. Three types of management control systems are studied in this thesis: performance management and measurement systems, systems for continuous improvements and wage systems.
The empirical base of this thesis consists of data from an exploratory survey study as well as a multiple case study.
On a general level, the survey study indicates a lack of congruence between structure and systems. Many companies seem to have started to move along the structure-innovative path but have not changed the management control systems accordingly. However, there are good reasons for doing so. The companies that have chosen the structure-innovative path perform better in terms of productivity, quality and cost reduction. These are also the companies that have changed their management control systems to the greatest extent.
The case study provides examples of how management control systems may be changed to fit structure-innovative forms of team-organized work. The main focus has been on the use of Balanced Scorecard. How a strategic continuous improvement capability was developed and sustained in the studied companies is illustrated. The findings extend previous research on new production concepts, which, this thesis argues, are not to be regarded as an issue of technology and vertical division of labour only, but also of supportive management control systems.
QC 20100525
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Udén, Emelie, and Sara Westerberg. "Utveckling av hygienisk golvränna." Thesis, Högskolan i Skövde, Institutionen för ingenjörsvetenskap, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:his:diva-13741.
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AB Furhoffs Rostfria grundades i Skövde 1899 för att tillverka kannor och kittlar i koppar. Idag tillverkar de produkter i rostfritt stål för bland annat VVS-system, storkök och diskbänkar för hemmamiljö. Tillverkningen sker i Skövde med en maskinpark som är anpassad för produktion i rostfritt stål. Då kraven från marknaden går åt mer hygieniska golvrännor och konkurrenterna fokuserar på att marknadsföra denna typ av produkt, vill Furhoffs leda denna utveckling. Examensarbetets mål är att utveckla en golvränna som är anpassad för områden som har extra höga krav på hygien för att undvika spridning av smittor. Detta kan vara livsmedelsindustri, storkök, sjukhus eller laboratorier. Golvrännan ska även vara säker att använda i en industri där tyngre trafik förekommer och då är det ett krav att locket ska klara en belastning på 12 500 kg. För att anpassa produkten till användaren utfördes intervjuer på ett större mejeri, en livsmedelsindustri och en restaurang. Även en observation utfördes på restaurangen för att observera hur rengöringsprocessen av produkten gick till. Informationen från dessa besök resulterade i användarbehov som tillsammans med krav från Furhoffs låg till grund för hur golvrännan senare utvecklades. Golvrännans olika komponenter: brunn med vattenlås, ränna, lock och silkorg, utvecklades var för sig för att sedan anpassas till varandra. Utförda tester och en kostnadsanalys låg till grund för de konceptval som togs. Flödet av vatten och bortforslande av avfall testades för att välja ut den mest optimala profilen på rännan. För att veta om golvrännan är säker att använda i de tänkta miljöerna utfördes belastnings-, halk- och flödestester på locket. Den slutliga produkten är anpassad för Furhoffs tillverkningsmetoder. Golvrännan uppfyller de krav som ställts och är anpassad för miljöer med höga krav på hygien. Resultatet från examensarbetet kommer att ligga till grund för den hygienränna som kommer att tillverkas av Furhoffs.AB Furhoffs Rostfria was founded in Skövde in 1899 to produce pots and cauldrons in copper. Today´s production is focused on products for HVAC (heating, ventilation and air conditioning) as well as for restaurant kitchens and customized products. The production is located in Skövde with machines suited for processing stainless steel. Demands from the market as well as Furhoff´s competitors are focusing on hygienic floor drain gutters. Because of this, Furhoffs wants to be the leading company of this kind of development. This project aims to develop a floor drain gutter that is suitable for environments with high requirements of hygiene to prevent spreading of diseases. These environments can be food factories, laboratories, hospitals and restaurant kitchens. The product needs to be safe to use in industries where traffic from heavy vehicles occur. This means that the product must withstand a load of 12 500 kg. To adjust the product to fit the user, interviews were performed in a large dairy, a food factory and in a restaurant. An observation was also performed in the restaurant to observe the cleaning process of a floor drain gutter. The information from the user study resulted in a list of needs. These, combined with demands from the company, formed the product specification. This specification was the basis for how the product later was developed. The components of the floor drain gutter, gully with a stench trap, gutter, cover and strainer basket, was developed separately and adapted to each other. Tests and cost analysis were performed to make well-founded concept choices. Water flow and removal of waste was tested to choose the most optimal gutter profile. To make sure the floor drain gutter is safe to use in the intended environment, load tests, slip tests and tests of flow rates were made. The final product is adjusted for Furhoff´s production methods. The floor drain gutter fulfils the requirements and is suitable for environments with high hygiene demands. The result from this thesis will be used for further development of Furhoff´s future floor drain gutter.
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Roustan, Hervé. "Modélisation des transferts couples de charge et de chaleur dans un électrolyseur industriel de production de fluor." Grenoble INPG, 1998. http://www.theses.fr/1998INPG0079.
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Ce travail décrit la conception du modèle numérique du comportement électrique et thermique des cellules industrielles d'électrolyse du fluor de la société comurhex. Le but de cette étude est de déterminer les vecteurs densité de courant, le potentiel électrique et les isothermes dans l'électrolyseur. La modélisation a été conduite pas à pas dans le but de séparer les difficultés. En premier lieu, un modèle électrique de l'électrolyseur a été élaboré. Pour sa mise au point, il a été nécessaire de surmonter de nombreuses difficultés. En particulier, le traitement de la discontinuité du potentiel à travers les interfaces anode/bain, à cause des surtensions a été une grosse difficulté. Ensuite, un nouveau modèle couplant les équations d'électricité et de thermique (en conduction uniquement) a été construit. Cependant, ce modèle n'était pas satisfaisant car il négligeait les phénomènes de convection qui sont prépondérants dans le transfert thermique au sein de la cellule. C'est pourquoi, un dernier modèle incluant les précédentes équations et celles de Navier-stokes a été créé. Ce modèle prend en compte le dégagement gazeux aux électrodes. Ce dernier modèle donne de très bons résultats et tout particulièrement en ce qui concerne le transfert thermique. Ce modèle est un outil très utile pour la compréhension du comportement de la cellule. C'est un outil performant pour l'optimisation de l'électrolyseur ou pour la conception d'une nouvelle cellule
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Aboubakar, Inconnu. "Optimisation des paramètres de production et de conservation de la farine de Taro (Colocasia esculenta)." Thesis, Vandoeuvre-les-Nancy, INPL, 2009. http://www.theses.fr/2009INPL005N/document.
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L’étude de l’optimisation des paramètres de production et de conservation de la farine de taro (Colocasia esculenta) a permis de mieux comprendre le processus cuisson des tubercules et de conservation des farines. Les études de cuisson des tubercules de six variétés ont montré que la variété Ibo coco est celle qui cuit vite eu égard à ses bonnes propriétés thermiques. La cuisson des tubercules dans l’eau du robinet est la meilleure technique de cuisson comparativement aux cuissons, à la vapeur, dans les solutions acides de citron et de tamarin. Les études de détermination des conditions optimales de séchage et conservation de la farine de taro, en utilisant un vieillissement accéléré à 10 et 20 jours de stockage à 45°C à des activité en eau de 0,07 ; 0,11 ; 0,23 ; 0,33 ; 0,53 ont permis de montrer que le vieillissement après 10 jours de stockage était suffisant pour les analyses. De plus l’application du modèle BET lors des mesures des isothermes de sorption, a permis de déterminer les teneurs en eau mono moléculaires théorique et expérimentale. Les farines produites à la teneur en eau mono moléculaire, donnent une pâte ayant des caractéristiques texturales proches de celles de la pâte traditionnelle. Toutefois, la conservation de ces farines à différentes fractions particulaires (75, 150 et 250 µm) montre que les petites fractions particulaires (75 µm) absorbent plus vite de l’eau que les autres fractions particulaires et sont de ce fait plus susceptibles à la détériorationStudy on optimization of production and storage parameters of the taro (Colocasia esculenta) flour permitted to better understanding the cooking process of taro tubers and storage of taro flours. Studies of cooking of six varieties of tubers showed that the variety Ibo coco had high rate of cooking, due to his good thermal properties. The cooking of tubers in the faucet water is the best technique of cooking compared to, steam cooking, lemon and tammarin cooking. Studies of determination of the optimal conditions of drying and storage of the taro flour, using an accelerated ageing to 10 and 20 days of storage at 45°C to the activity in water of 0,07; 0,11; 0,23; 0,33; 0,53, showed that the ageing after 10 day of storage was sufficient for analyses. Besides the use of the BET model on sorption isotherms, permitted to obtain values of theorical and experimental monolayer water. Flours produced at this monolayer water, give dough with the textural characteristics near of those of traditional dough. However, the storage of these flours with different particle sizes (75, 150 and 250 µm) shown that the small particle size (75 µm) absorb water quickly than other flours, and they are more susceptible to the deterioration
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Hassaini, Leila. "Étude de la Morphologie et des Propriétés de Biocomposites Poly(3-Hydroxybutyrateco- 3-Hydroxyvalerate) (PHBV)/Farine de Grignons d’Olive." Thesis, Lorient, 2016. http://www.theses.fr/2016LORIS427/document.
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Ce travail a pour objectif de développer des biocomposites à base de poly(3-hydroxybutyrate-co-3-hydroxyvalérate) (PHBV) et de farine grignons d'olive (FGO) préparés par mélange fondu. Il s'articule autour de quatre parties. La première partie comprend une étude de la morphologie et des propriétés physiques des échantillons biocomposites PHBV/FGO aux taux de charge de 10, 20 et 30% en masse. Les résultats indiquent que le système PHBV/FGO se caractérise par une séparation de phase dont le nombre et la taille des particules de FGO augmentent avec le taux de charge. De plus, la stabilité thermique et les propriétés barrières vis à vis de la vapeur d'eau et de l'oxygène ont diminué. Par contre, l'incorporation de la FGO dans le PHBV induit une augmentation du module d'Young qui s'accentue avec le taux de charge. La même tendance est également observée avec le module de conservation déterminé par DMA. Dans la seconde partie, l'impact du PHBV-g-MA comme agent compatibilisant dans les biocomposites PHBV/FGO a été évalué en fonction du taux de charge. La caractérisation morphologique du système ternaire a révélé que la présence du PHBV-g-MA dans les biocomposites PHBV/FGO induit une meilleure adhésion interfaciale entre les particules de la FGO et la matrice PHBV en raison des interactions charge-matrice. En conséquence, une nette amélioration des propriétés mécaniques, viscoélastiques et barrières aux gaz (vapeur d'eau et oxygène) est observée. Dans la troisième partie, une modification chimique de la FGO avec le trimethoxy (octadecyl)-silane (TMOS) et son influence sur la morphologie et les propriétés physiques de biocomposites PHBV/FGO: 80/20 ont été étudiées. Les résultats révèlent une dispersion fine et homogène de la FGO traitée au TMOS dans la matrice PHBV avec en apparence moins de microvides en comparaison avec le biocomposite non modifié. Les propriétés physico-mécaniques du biocomposite PHBV/FGO modifiée sont sensiblement améliorées. La dernière partie consacrée à une étude du vieillissement hygrothermique dans l'eau de mer à 25 et 40°C de films de biocomposites PHBV/FGO: 80/20 avant et après modification, révèle que la FGO favorise la cinétique de dégradation du système PHBV/FGO indépendamment du traitement. Toutefois, le biocomposite PHBV/FGO traité avec des organo-silanes se caractérise relativement par une résistance à la dégradation hygrothermique à 25 et 40°C par rapport au reste des échantillons biocompositesThis work aims to develop a biocomposites based on poly(3-hydroxybutyrate-co-3-hydroxyvalérate) (PHBV) and olive husk flour (OHF) prepared by melt compounding. It's articulated around four parts. The first part includes a study of the morphology and physical properties of the PHBV/OHF biocomposite samples at the loading rates of 10, 20 and 30 wt%. The results indicate that the PHBV/OHF system is characterized by a phase separation whose number and size of OHF particles increases with the loading rate. Moreover, the thermal stability and the barrier properties against water vapor and oxygen have decreased. On the other hand, the incorporation of the OHF in the PHBV matrix induces an increase in the Young's modulus which is accentuated with filler content. The same trend is also observed with the storage modulus determined by DMA. In the second part, the effects of PHBV-g-MA used as the compatibilizer for PHBV/OHF biocomposites were evaluated as a function of the loading rate. The morphological characterization of the ternary system revealed that the presence of PHBV-g-MA in the PHBV/OHF biocomposites induces better interfacial adhesion between the OHF particles and the PHBV matrix due to filler-matrix interactions. Consequently, a significant improvement in the mechanical, viscoelastic and gas barrier properties (water vapor and oxygen) is observed. In the third part, a chemical modification of OHF with trimethoxy(octadecyl)-silane (TMOS) and its influence on the morphology and physical properties of PHBV/OHF: 80/20 biocomposites was studied. The results reveal a fine and homogeneous dispersion of the TMOS-treated OHF in the PHBV matrix with apparently fewer microvides compared to the unmodified biocomposite. The physical and mechanical properties of the modified PHBV/OHF biocomposite are significantly improved. The last part devoted to a study of the hygrothermal aging in sea water at 25 and 40°C of films of biocomposites PHBV/OHF: 80/20 before and after modification reveals that the OHF promotes the degradation kinetics of the PHBV/OHF system regardless of treatment. However, the organo-silane-treated PHBV/OHF biocomposite is relatively characterized by a resistance to hygrothermal degradation at 25 and 40°C compared to the rest of the biocomposite samples
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Nabli, Lotfi. "Surveillance préventive conditionnelle prévisionnelle indirecte d'une unité de filature textile : approche par la qualité." Lille 1, 2000. https://pepite-depot.univ-lille.fr/RESTREINT/Th_Num/2000/50376-2000-158.pdf.
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Les unites de production sont actuellement soumises a de fortes contraintes de disponibilite, de productivite, de qualite et de flexibilite. Les problemes a resoudre sont relatifs a la surveillance, au controle qualite et a la maintenabilite. Il s'agit de surveiller et garder operationnels les entites du procede de fabrication, de les synchroniser, de les coordonner et d'integrer les ressources humaines et materielles, dans une approche de gestion de la qualite. Dans ce travail de these, nous nous interessons a la description fonctionnelle des principales activites d'une unite de filature textile dans le but de mettre en place une forme de surveillance preventive conditionnelle previsionnelle indirecte (spcpi), permettant d'ameliorer son niveau de surete de fonctionnement (fiabilite, disponibilite, maintenabilite, etc. ). Cette etude necessite des outils de modelisation et d'evaluation. Nous avons opte pour une modelisation modulaire, a base de la methode sadt qui decompose le systeme en activites elementaires permettant de definir les liens existant entre les parametres de qualite du produit et l'etat des entites du procede. Nous avons ainsi montre que la cause d'une derive de la qualite du produit est liee a l'etat defaillant d'une entite ayant entraine une baisse de ses performances. Les quatre processus de spcpi developpes dans ce memoire sont le suivi d'evolution, la detection, le pronostic et le diagnostic. L'originalite de l'approche du suivi d'evolution de la qualite du produit reside dans la mise en place d'une technique d'inference floue appelee la moyenne dynamique des metriques mdm de logique floueLa mdm est comparee a une methode standard comme la methode somme-produit. La fonction detection, basee sur le principe de seuillage permet l'estimation de l'amplitude d'une derive pour le declenchement du processus de pronostic. Une illustration de ce processus est mise en uvre sur la base d'une fonction de prevision basee sur la methode du gradient. Le diagnostic est realise en exploitant les gammes de longueurs d'ondes definis par l'analyse des defauts periodiques. L'ensemble de ce travail a ete concretise par le developpement d'un outil permettant la mise en uvre de cette approche de spcpt. Cet outil est baptise misufit (maquette informatisee de surveillance d'une unite de filature des industries textiles)
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Dabhilkar, Mandar. "Acting creatively for enhanced performance : Challenges for Swedish manufacturers in an age of outsourcing." Doctoral thesis, Stockholm : Department of Industrial Economics and Management, Royal Institute of Technology, 2006. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-4238.
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Fahl, Irene Aparecida Fávaro [UNESP]. "Caracterização geográfica da dispersão do flúor, através de teores foliares, em espécies vegetais de interesse econômico, a partir do pólo cerâmico de Santa Gertrudes-SP." Universidade Estadual Paulista (UNESP), 2004. http://hdl.handle.net/11449/95702.
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fahl_iaf_me_rcla.pdf: 3740864 bytes, checksum: 21c62c3e14c1419ec43bbae84baf3e62 (MD5)Este trabalho teve como objetivo avaliar a emissão de flúor do pólo cerâmico de Santa Gertrudes-SP, e sua dispersão geográfica nas direções de Analândia, Araras, Holambra e São Pedro, através da determinação dos teores de flúor acumulados em folhas de plantas de quatro espécies vegetais de valor econômico café (Coffea arabica), citrus (Citrus sinensis), cana de açúcar (Saccharum oficinarum) e capim colonião (Panicum maximum), crescidas nas proximidades das indústrias e ao longo dos trajetos entre o pólo cerâmico e os locais descritos,assim como avaliar seus efeitos nas características anatômica das folhas de café e de capim colonião. Observou-se, que os maiores teores foliares de flúor (80 mg de flúor/kg de matéria seca (m.s.) de folha), foram acumulados pelas plantas de citrus e os menores (49 mg de flúor/kg de m.s. de folha) pelas plantas de cana de açúcar. Plantas de café e de capim colonião acumularam valores intermediários (69 e 54 mg de flúor/kg de m.s. folha), respectivamente. Em média, as dicotiledôneas (café e citrus) acumulam maiores teores foliares de flúor que as monocotiledôneas (cana de açúcar e capim colonião). A redução nos teores foliares de flúor, para 50% do teor máximo observado nas proximidades centro emissor, ocorreu a uma distância de 2,45 a 2,49 km, nos eixos Santa Gertrudes/São Pedro e Santa Gertrudes/Analândia, respectivamente, enquanto que no eixo Santa Gertrudes/Araras, a redução para 50% do teor máximo somente ocorreu a uma distância de aproximadamente 6,0 km do ponto de origem. Enquanto que, nos eixos em direção a Analândia, Araras e Holambra, teores foliares de 10 mg de flúor/kg de m. s. de folha, foram observados a cerca de 15 km da origem, na direção de São Pedro, esse valor somente foi observado a cerca de 20 km. Num raio de aproximadamente 10 km do Pólo emissor...
This work had the objective to evaluate the emission of fluorine of Santa Gertrudes, -São Paulo State ceramic region, and its geographical dispersion to the directions of Analândia, Araras, Holambra and São Pedro, through the determination of the tenors of accumulated fluorine in leaves of plants of four vegetable species such as coffee (Coffea arabica), citrus (Citrus sinensis), sugar cane (Saccharum oficinarum) and colonião grass (Panicum maximum), grown in the proximities of the industries and along the itineraries between the Ceramic Region and the nucleous of the fluorine scattering area. Also, to evaluate their effects in the anatomical characteristics of the leaves of coffee and colonião grass. It was observed that the largest foliate fluorine tenors (80 mg of F/kg of dry matter (d.m.), were accumulated for the citrus plants, and the smallests (49 mg of F/kg of d.m.) for the plants of sugar cane. Coffee and colonião grass plants accumulated intermediate values (69 and 54 mg of F/kg of d.m.), respectively. On average, the dicotyledonous plants (coffee and citrus) accumulate larger foliate tenors of fluorine than the monocotyledonous plants (sugar cane and colonião grass). The reduction in the foliate tenors of fluorine, for 50% of the maximum tenor observed in the proximities of the issuing center, happened at a distance from 2.45 to 2.49 km, in the axes Santa Gertrudes/São Pedro and Santa Gertrudes/Analândia, respectively. While in the axis Santa Gertrudes/Araras, the reduction for 50% of the maximum tenor only happened for a distance of approximately 6.0 km of the origin point. In the axes towards Analândia, Araras and Holambra, foliate tenors of 10 mg of F/kg of d. m. of leaf, were observed close to 15 km from the origin, while in São Pedro's direction, that value only was observed about 20 km. In a ray of approximately 10 km of the issuing center...(Complete abstract click electronic access below)
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Gunnervald, Sebastian, and Viktor Gustafsson. "Development of a layout for effective use of space in a block stacking warehouse." Thesis, Linköpings universitet, Kommunikations- och transportsystem, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-139031.
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Historically, the paper market has consisted of few customers with high demands. However, the market has changed and nowadays it consists of many customer with lower demands, which causes problems in the warehouse process of Braviken Papermill. The main problem is that the utilization rates in the storage bays are low due to the relatively large bays compared to the order quantities. The purpose of this project is to develop a new set of bays that fits the current market and increases the utilization rates. The goal of the new set is to decrease the amount of manual operations and instead use the full potential of the allocation system. The new set of bays consist of four bay types, dimensioned for 2, 4, 8 and 16 reel stacks respectively. Several experiments are done, and the new set of bays performs better than the current one, in terms of the utilization rates for storage events in the bays. The average utilization rate is significantly higher for the new set compared to the current. A decrease in effective storage space can be compensated by an increased degree of utilization. Also, it is beneficial with more and smaller bays in a market situation like the one of Holmen Paper.
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Kulinska, Maria. "Digital tools for developing customized co-design platform with integration of comfort and fashion." Thesis, Lille 1, 2018. http://www.theses.fr/2018LIL1I046/document.
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Malgré les progrès technologiques modernes, l'industrie du vêtement est toujours ancrée dans une approche traditionnelle en 2D et en 3D lors d’essayage virtuel. La question fondamentale de l’accessibilité aux données morphologiques du consommateur en ligne n'a toujours pas été résolue de manière appropriée. De plus, l’interactivité et le relationnel entre le corps humain et le vêtement ne sont pas suffisamment explorés pour atteindre une performance satisfaisante lors de l'essayage du vêtement en ligne. Mes travaux de recherche ont donc pour objectif de combler ces lacunes en proposant une plate-forme numérique intégrant à la fois la connaissance des experts du secteur de l’habillement (ajustement et confort), et les retours sensoriels des clients (au porté du produit) en misant en place une nouvelle stratégie de conception de vêtement en 3D afin de calculer et d’ajuster les valeurs de l’aisance 3D de celui-ci, comme les points clefs lors de la perception et la satisfaction du produit par le client. C’est à partir d’une méthode de classification supervisée associée à un descripteur de forme 2D que nous avons retrouvé le morphotype du client en 3D avec son avatar. Cette relation complexe entre la reconnaissance du corps porteurs et la conception de vêtements 3D approprié dans essayage virtuel a été testée et analysée dans le cadre de ce projet pour bâtir une solution de conception adaptée à un environnement à distance. À cette fin, nous avons présenté les principes de la modélisation du vêtement directement adaptés à la morphologie du porteur afin de couvrir toute la gamme de formes et de mesures corporellesDespite modern technological progresses, the apparel industry is still anchored in the traditional 2D-to-3D design approach. Additionally, the aspects of the relation between human body and garment are not sufficiently explored in order to provide satisfactory performance of virtual try-on in the aspects of providing not only right fit and comfort to the customer but also avoiding returns to the retailer. However the main aspect is a lack of appropriately resolved issue of consumers’ body recognition in an online environment and proper 3D design methodology for individual client. In my PhD research, we challenge those gaps by proposing a foundation of a digital and knowledge-based platform for garment design and fit and comfort evaluation by integrating customers' and experts’ knowledge with the design parameters. By building a new 3D design strategy, we proposed an original method to calculate and adjust the 3D ease allowance values, which constitutes the key issues of satisfaction perception. Our 3D design method is linked to the consumer’s virtual representation, which come from a new pattern recognition method permitting to identify individual morphology from a single web-camera. It was experimentally shown that using the supervised method to create 2D shape descriptors enables to detect wearers’ morphotypes for a target population. The complex relationship between wearers’ body recognition, 3D garment design and garment fitting in virtual try-on has been tested and analyzed in the scope of this research project to build a suitable design solution applied to the remote environment
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Vo, Van Dien. "Gestion de la biodiversité et traçabilité dans la chaîne d’approvisionnement." Thesis, Paris 10, 2017. http://www.theses.fr/2017PA100101/document.
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Cette thèse porte sur la gestion intégrée de la biodiversité, la mise en place de systèmes de traçabilité et la gestion de la chaîne d'approvisionnement verte (GSCM). En particulier, cette recherche tente de développer un modèle de mesure de la performance de la gestion de la biodiversité par des variables linguistiques sous la théorie de la logique floue (O1), d'étudier les relations entre la gestion de la biodiversité, GSCM et la mise en œuvre des systèmes de traçabilité (O2), et déterminer les changements dans les attributs de transaction et les coûts des entreprises dans le cadre de l'économie des coûts de transaction (O3). À cette fin, cette étude fait l'objet d'examens empiriques dans la chaîne d'approvisionnement des produits de la mer Vietnamiens en utilisant des données primaires provenant d'enquêtes par questionnaire et de visites sur le terrain. À partir de l'enquête spécialisée, un ensemble de cinq indicateurs clés de performance (KPIs) a été validé pour mesurer les performances de la gestion de la biodiversité des entreprises. Les résultats empiriques montrent que les entreprises de fruits de mer Vietnamiennes obtiennent de meilleurs résultats sur les indicateurs clés Biodiversity Stewardship Practice, Biodiversity Business Assessment, mais des scores inférieurs sur Biodiversity Conservation Commitment, Biodiversity Management Policy et Biodiversity Performance Reporting. Compte tenu de ce fait, les pratiques de gestion de la chaîne d'approvisionnement écologique sont proposées pour avoir des effets positifs sur les performances de la gestion et de la traçabilité de la biodiversité. Par conséquent, la mise en œuvre des systèmes de traçabilité entraîne une augmentation de la spécificité des actifs (71%), une baisse de l'incertitude des transactions (60%) et une faible variation (7%) de la fréquence des transactionsThis study observes corporate biodiversity management, the implementation of traceability systems and green supply chain management. In specific, this research attempts to develop a model for measuring the performance of corporate biodiversity management with linguistic variables under fuzzy logic theory (O1), to investigate the relationships between biodiversity management, GSCM and the implementation of traceability systems (O2), and to determine changes in the transaction attributes and costs of firms under the transaction cost economics framework (O3). For these purposes, this study takes empirical examinations in the Vietnamese seafood supply chain using primary data from questionnaire surveys and field trips. From the specialist survey, a set of five key performance indicators (KPIs) has been validated for measuring the performance of corporate biodiversity management. The empirical results show that the Vietnamese seafood companies perform better on the key indicators Biodiversity Stewardship Practice, Biodiversity Business Assessment, but lower scores on Biodiversity Conservation Commitment, Biodiversity Management Policy and Biodiversity Performance Reporting. Considering this fact, the green supply chain management practices are proposed to have positive effects on the performance of biodiversity management and traceability. As a result, the implementation of traceability systems leads to an increase in asset specificity (71%), a decrease in transaction uncertainty (60%) and low variation (7%) in the frequency of transactions
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Cheneaux-Berthelot, Christiane. "L’économie du blé dans le département de la Seine au XIXème siècle : permanences et mutations." Electronic Thesis or Diss., Paris 4, 2015. http://www.theses.fr/2015PA040125.
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Cette étude est à replacer dans le débat sur le retard de l’agriculture française à la veille de la première guerre mondiale, et dans la façon d’aborder cette analyse, entre la macro et la micro-histoire. L’économie du blé au XIXe siècle est une des portes d’entrée de l’analyse. Le blé, culture alimentaire de première nécessité, couvrait la plus grande partie des terres labourables, alimentait des très nombreux moulins, donnait naissance à un trafic de grande envergure tant national qu’international, et se retrouvait, sous forme de pain, dans l’alimentation de tous les foyers. L’impact de cette céréale était si important, que la priorité de tous les gouvernements, était de nourrir en priorité le peuple de cette denrée pour assurer la paix sociale. Ainsi donc, d’un aspect agricole, on passait d’emblée à un aspect politique et social de l’étude. La façon dont le blé était collecté, emmagasiné, distribué, déterminait un marché, plus ou moins ouvert selon que les récoltes s’avéraient suffisantes, ou insuffisantes. L’étude ouvrait donc sur la politique commerciale de la France. Les revenus des producteurs de blé étaient fonction de leur place dans le marché, leurs gains dépendaient de l’élasticité du marché, de la loi de l’offre et de la demande, et des exigences des donneurs d’ordre. L’aspect économique de la question prenait tout son sens. Enfin, la quantité de blé récolté et livré était fonction de la taille de l’exploitation, de l’agencement des terres, de leur qualité et de l’habilité du paysan à optimiser les rendements. L’aspect purement agraire et technique de la production s’avéraient être un préalable à la réflexion. Autant de sujets de réflexion encore d’actualitéThis study is part of the debate about The French agriculture backwardness before the First World War, and in the way to situate this analysis between macro and micro history. Wheat economy in the XIXth century is one of the introductions to this analysis. Wheat, being the essential food producing farming, was grown on most of the cultivated lands. It supplied a lot of granaries, gave birth to a tremendous national and international trade and was essentially dedicated to the making of bread for families. The impact of that cereal was so important that the governments’ priority was to feed the population to maintain social peace. Consequently the agricultural subject of our analysis implied to consider the political and social aspect of it. The way wheat was collected, stored, distributed and finally delivered, implied a market, more or less opened, depending on plentiful or insufficient harvests. The study opened on the French external commercial policy. The incomes of wheat producers depended on their situation on the market, their incomes depended on the fluctuations of the market, offer and supply and the demands of the principals. The economical aspect was quite meaningful. Finally, the quantity of wheat sales depended on the sizes of farms, their situation, their quality and the ability of peasants to increase the yields. The mere agricultural and technical aspect of production could not be avoided and turned out to be prior to our reflection. That sort of questioning is quite valid in the present day world
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Berthelot, Christiane. "L’économie du blé dans le département de la Seine au XIXème siècle : permanences et mutations." Thesis, Paris 4, 2015. http://www.theses.fr/2015PA040125.
Full textAbstract:
Cette étude est à replacer dans le débat sur le retard de l’agriculture française à la veille de la première guerre mondiale, et dans la façon d’aborder cette analyse, entre la macro et la micro-histoire. L’économie du blé au XIXe siècle est une des portes d’entrée de l’analyse. Le blé, culture alimentaire de première nécessité, couvrait la plus grande partie des terres labourables, alimentait des très nombreux moulins, donnait naissance à un trafic de grande envergure tant national qu’international, et se retrouvait, sous forme de pain, dans l’alimentation de tous les foyers. L’impact de cette céréale était si important, que la priorité de tous les gouvernements, était de nourrir en priorité le peuple de cette denrée pour assurer la paix sociale. Ainsi donc, d’un aspect agricole, on passait d’emblée à un aspect politique et social de l’étude. La façon dont le blé était collecté, emmagasiné, distribué, déterminait un marché, plus ou moins ouvert selon que les récoltes s’avéraient suffisantes, ou insuffisantes. L’étude ouvrait donc sur la politique commerciale de la France. Les revenus des producteurs de blé étaient fonction de leur place dans le marché, leurs gains dépendaient de l’élasticité du marché, de la loi de l’offre et de la demande, et des exigences des donneurs d’ordre. L’aspect économique de la question prenait tout son sens. Enfin, la quantité de blé récolté et livré était fonction de la taille de l’exploitation, de l’agencement des terres, de leur qualité et de l’habilité du paysan à optimiser les rendements. L’aspect purement agraire et technique de la production s’avéraient être un préalable à la réflexion. Autant de sujets de réflexion encore d’actualitéThis study is part of the debate about The French agriculture backwardness before the First World War, and in the way to situate this analysis between macro and micro history. Wheat economy in the XIXth century is one of the introductions to this analysis. Wheat, being the essential food producing farming, was grown on most of the cultivated lands. It supplied a lot of granaries, gave birth to a tremendous national and international trade and was essentially dedicated to the making of bread for families. The impact of that cereal was so important that the governments’ priority was to feed the population to maintain social peace. Consequently the agricultural subject of our analysis implied to consider the political and social aspect of it. The way wheat was collected, stored, distributed and finally delivered, implied a market, more or less opened, depending on plentiful or insufficient harvests. The study opened on the French external commercial policy. The incomes of wheat producers depended on their situation on the market, their incomes depended on the fluctuations of the market, offer and supply and the demands of the principals. The economical aspect was quite meaningful. Finally, the quantity of wheat sales depended on the sizes of farms, their situation, their quality and the ability of peasants to increase the yields. The mere agricultural and technical aspect of production could not be avoided and turned out to be prior to our reflection. That sort of questioning is quite valid in the present day world
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Sedláková, Anežka. "Bydlení v uvolněných objektech bývalých brněnských textilních továren." Doctoral thesis, Vysoké učení technické v Brně. Fakulta architektury, 2010. http://www.nusl.cz/ntk/nusl-233219.
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The doctoral thesis is concentrated on housing as selected manner to convert the released textile factories. In the first part was attention given to history which confirmed the high recovery factor of Brno´s industrial past to reuse. Next part was focused on analysis of the XXth century forms of collective housing, especially the loft housing, to characterize the perspective habitation in selected factories. Finally was the contemporary housing observed through three specific aspects to aim the conversion of Brno´s textile factories.
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Aprianita, Aprianita. "Assessment of underutilized starchy roots and tubers for their applications in the food industry." Thesis, 2010. https://vuir.vu.edu.au/15496/.
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Physicochemical properties of flours and starches isolated from tubers and roots commercially available in Australia and traditionally produced in Indonesia were investigated in this study. The results showed that these flours and starches may be utilized in certain food applications. Raw starchy materials from Australia included taro, yam, and sweet potato. Due to its narrow particle size distribution (1-64 μm), taro flour would be better suited in applications which require improved binding and reduced breakability. The paste of sweet potato flour and starch had higher clarity compared to those of yam and taro. All flours and starches showed variable pasting behavior.
In general, all starch samples had higher viscosity than that of flour samples. Taro flour had the highest viscosity among other flour samples. Yam flour and starch were more
stable against heat and mechanical treatments. An apparent shear thinning behavior was observed from the extracted mucilage. Concentration dependant flow behavior of all
mucilage samples was successfully fitted by the (Ostwald) Power Law, Hershel Buckley, and Casson models.
Meanwhile, flours and starches isolated from tubers and roots grown in Indonesia also had properties suitable for certain food applications. Compared to other flour samples,
cassava and canna flours contained the highest amount of total starch (TS). Taro starch had the lowest amount of TS among other starch samples with 75.44%. The highest amount of amylose was observed from yam and canna flours (25.24 and 23.19%, respectively). Among starch samples, canna starch contained the highest amylose content (30.38%), while taro had the lowest (7.64%). In terms of protein content, arrowroot flour had the highest amount (7.70%), in contrast to cassava flour which had the lowest (1.51%). Compared to other flours, canna and konjac flour were the most slowly digested which indicated by their high amount of
resistant starch (RS). Canna starch had the highest swelling power and viscosity than other starches and flours. The clearest paste was observed from cassava flour and starch as opposed to konjac starch which was the most opaque paste.
Subsequently, physicochemical properties of composite flours made of wheat flours at different protein contents (low and high protein contents) and canna or konjac flours at different level substitution (0, 25, 50, 75, and 100%) were prepared and analyzed.
Compared to that of wheat flour alone, the increasing level of canna flour from 0-100% significantly increased the amount of RS but decreased protein content of wheat-canna
composite flours. This substitution did not alter the TS, amylose, and amylopectin contents of these mixtures. Changes of physicochemical properties were also observed
in wheat-konjac composite flours. The increasing amount of konjac flour decreased the TS, amylose, amylopectin, and protein content of the mixtures. Substitution of wheat
flour with 75% of canna or konjac flours in HPWC (High Protein Wheat-Canna), HPWK (High Protein Wheat-Konjac), and LPWK (Low Protein Wheat-Konjac) increased the swelling power of these mixtures at 80 and 90◦C. In general, substitution of wheat flour with up to 50% of canna or konjac flours significantly decreased viscosity of composite flours. Further increase of canna or konjac flours did not cause any other observable decline. In addition, the substitution of wheat flour with canna or
konjac flours increased the gelatinization temperature of all composite flours.
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wang, Chi-chen, and 王吉辰. "Study of Market Conduct of Flour Industry –An AHP Application." Thesis, 2006. http://ndltd.ncl.edu.tw/handle/dv3yn5.
Full textAbstract:
碩士靜宜大學
管理碩士在職專班
94
Abstract This study researches into flour industry from the point of market conduct, in order to understand Taiwan’s flour industry in both interior and external change of the environment as well as the effect on industry’s resource and capability and to provide the reference for industry. This study is based on AHP（Analytical Hierarchy Process） questionnaire, interviewing the flour factory, flour wholesaler and the firsthand flour purchaser. It starts with the flour industry external environment factor and emphasizes the government’s law, the price variation of international material market and the industry competition. On the other hand, the interior factor is emphasis on the capability of producing, brand image and the relationship with the customer. It finds out that the relationship between the flour factory and the firsthand flour purchaser is similar as seller-customer relationship. Because of the higher price of changing another flour brand, the customer tends to stick to the old one. When the customer is not satisfied with the seller’s service, the seller will lose them. Once the customer is gone, it’s hard for the seller to call them back. The flour wholesaler tends to the brand image. They market various brands and what they sell is based on their brand image. They have established a firm relationship with their customer. Thus the flour factory shall establish its product and quality ascendancy. As to the flour factory, the industry environment has direct effect on the profit, producing capability, brand image and the relationship with the customer. Thus it will be more effective if the flour factory can put emphasis on both industry environment and industry resource. It concludes that the flour factory can improve its benefit through three ways. First of all, establish the capability of industry resource, brand image and the relationship with the customer, as well as reinforce its capability of producing. Second, improve the purchasing material capability and industry competition to establish its advantage of industry competition ability. The third point is the use of tactic, by using Porter value chain and competition tactic, from material purchase, manufacture, output to customer-service, it connects the industry environment, resource capability and tactic so that improve the highly profit and benefit.
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Gibson, Ronald R. "A spatial equilibrium analysis of the North American flour milling industry under free trade." 1990. http://hdl.handle.net/1993/17161.
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Wei, Jing-Yi, and 韋靜怡. "The Moderating Effect of Cooperation upon Price Competitive-Response Actions: An Evidence from Taiwanese Flour Industry." Thesis, 2009. http://ndltd.ncl.edu.tw/handle/vr7cz2.
Full textAbstract:
碩士靜宜大學
企業管理研究所
97
Chen (1996) addressed the Competitive Dynamics Theory which was largely contributed to competitive strategy, but there were more and more evidences showed that firms reside the relationship of cooperation and competition at the same time in empirical observation. However, prior literatures of co-operation were showed in conceptualization because they could not get the suitable sample to em-pirical analysis. This study overcame the difficulty and chose the sample was Tai-wanese flour industry. This industry attached to oligopoly market and competi-tive-response actions were heavily between firms, but they must be cooperated be-cause of centralized procurement. The necessity of cooperation would be moderated competitive actions and response. Then, this study utilized the correlative literatures of Competitive Dynamics Theory, Multi-point Competition Theory, and Strategic Alliance to discuss the influences in competitive actions and response when there were necessity of cooperation, market commonality, and resource similarity be-tween firms. The data came from focal firm which was one of the five biggest flour industries which contained the monthly price and quality of sales from 6 distributors and 4 food processing factories to build the action and response between focal firm and competitor from 2002 to 2005, and corresponded with the centralized procure-ment in this term to analysis how the competitive and cooperative relationship in-fluence competitive actions and responses between firms. This study found: (1) there were more market commonality and resource similarity between firms which would be lower probability to act, (2) there were more market commonality and re-source similarity between firms which would be lower probability to response, (3) there were higher necessity of cooperation and market commonality between firms which would be lower probability to act, (4) there were higher necessity of coopera-tion and market commonality between firms which would be higher probability to response.
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Chi, Kuo-Ku, and 紀國庫. "The Study of Strengthening Customer Relationship by Using Product Strategy on the Case of Taiwan，s Wheat Flour Industry." Thesis, 2004. http://ndltd.ncl.edu.tw/handle/43371764303206237791.
Full textAbstract:
碩士國立中興大學
高階經理人碩士在職專班
92
Abstract In the past several years, the lifetime of products has great shrunk due to the enormous change in the global economy, social structure of population, consumer buying behavior, and the advance of technology and information system. Facing the radical competition, the enterprise have focused increased attention on the concept of Customer Relationship Management. These customer oriented products and services can completely satisfy customer’s demands, retain the long —term customer relationship, achieve the company goal of profit earning. Hence, the customer is the key to company’s profitability and the driving force of company growth. This research is engaged on case study of strengthening customer relationship by using product strategy on the case of Taiwan’s wheat flour industry. Based on Cannon & Perreault (1999) empirical research model of Buyer Seller Relationships In Business Markets, this study utilizes personal interviews and telephone discussions with the professional R&D managers, purchasing managers, operation managers, and then through content analysis. As a result, the buyers and the sellers can maintain the long-term stable business relationships on flour industrial marketing, thus the proposal research framework can be testified. The study shall have the following conclusions: 1. The supplier of wheat flour product (first processing) must communicate with the customers of wheat food product (second processing) , develops the most suitable customer special-proposal wheat flour. Such product design strategy can satisfy the individual customer’s needs and wants, and therefore it can get the wheat food product processing customers the trust and commitment. 2. It is essential for the two organizations to construct the food manufacture, quality, sanitation, and safety independent management systems to maintain the wheat food product processing customers long-term stable business relationship， like through the International Organization for Standardization (ISO-9000) quality guarantee authenticates, the Food Good Manufacturing Practices (GMP) authenticates, the Hazard Analysis Critical Control Point (HACCP) authenticates and so on. The buying and selling organizations must involve the other parties in early stages of product design, discuss about future product development plans, share cost information, provide supply and demand forecast, and link with each other to facilitate operation including computerized inventory or order and replenishment system and Just-in-time delivery system. It is necessary to sign a formal contract or agreement that specify the obligations and protections of both organizations in the relationship and the appropriate cooperation, to invest the particular processing customer special-purpose installation to satisfy the individual customer’s special demands and services. Thus, performing effectively the customer relationship management activities to build up long-term stable relationship in business market is not only the key to enhance mutual competitive advantages but also the key to attain the two-win goal of profit earning .
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Quelal, Vásconez Maribel Alexandra. "Application of Infrared Spectroscopy and Chemometrics to the Cocoa Industry for Fast Composition Analysis and Fraud Detection." Doctoral thesis, 2020. http://hdl.handle.net/10251/135258.
Full textAbstract:
[ES] El cacao es un producto de alto valor, no únicamente por sus características sensoriales, sino porque también presenta un alto contenido en antioxidantes y alcaloides estimulantes con efectos saludables. Debido a la alta demanda, la industria del cacao en polvo tiene el desafío de asegurar la calidad de grandes volúmenes de producción de una manera rápida y precisa, evitando la presencia de contaminantes o adulterantes en la materia prima, ofreciendo productos donde se preserven las propiedades saludables. La espectroscopia del infrarrojo cercano (NIR) es una tecnología rápida y no destructiva útil en el análisis de productos alimentarios. La presente tesis doctoral se centra en evaluar el potencial uso del NIR como una herramienta de control de calidad con el fin de poder resolver problemas que se presentan en la industria del cacao en polvo. Los problemas a resolver incluyen la detección de materiales no deseados o adulterantes en el cacao en polvo, y la monitorización rápida y precisa del contenido de flavanoles y metilxantinas del cacao en polvo durante el proceso de alcalinización. El primer capítulo evalúa la viabilidad del NIR, en combinación con análisis quimiométricos, en la detección de la presencia de materiales no deseados o adulterantes como son cascarilla de cacao o harina de algarroba. Para ello, diferentes muestras de cacao en polvo natural y con diferentes niveles de alcalinización (suave, medio y fuerte) fueron mezcladas con distintas proporciones de cascarilla de cacao (con cacao natural) o harina de algarroba (con cacao natural y alcalinizado). Los resultados obtenidos indican que el NIR, combinado con modelos estadísticos tales como el análisis discriminante por mínimos cuadrados parciales (PLS-DA) y la regresión parcial de mínimos cuadrados (PLS), es un método rápido y eficaz para identificar cualitativa y cuantitativamente materiales no deseados o adulterantes como la cascarilla y la algarroba en cacao en polvo, independientemente del grado de alcalinización o el nivel de tostado de la harina de algarroba.
En el segundo capítulo, el análisis composicional del cacao en polvo se orientó al control de los cambios producidos en el contenido de flavanoles y metilxantinas debidos al proceso de alcalinización al que se somete el caco en polvo. Se determinó el contenido de catequina, epicatequina, cafeína y teobromina mediante cromatografía líquida de alta resolución (HPLC), correlacionándose los contenidos obtenidos para cada uno de estos compuestos con las determinaciones NIR. Se obtuvieron buenos modelos para la predicción de los compuestos mediante regresión PLS con valores superiores a 3 para la relación entre el rendimiento y la desviación (RDP), lo cual demuestra que los modelos obtenidos pueden ser utilizados para la rápida y fiable predicción del contenido de flavanoles y metilxantinas en cacaos naturales y con diferentes niveles de alcalinización.[CAT] El cacau és un producte d'alt valor, no sols per les seues característiques sensorials, sinó perquè també presenta un elevat contingut en antioxidants i alcaloids estimulants amb efectes saludables. A conseqüència a l'alta demanda, l'industria del cacau en pols té el desafiament d'assegurar la qualitat de grans volums de producció d'una manera ràpida i precisa, evitant la presència de contaminants o adulterants en la matèria cosina, oferint productes a on se preserven les propietats saludables. L'espectroscòpia de l'infrarroig proper (NIR) és una tecnologia ràpida i no destructiva útil en l'anàlisi de productes alimentaris. La present tesis doctoral se centra en avaluar el potencial ús del NIR com una eina de control de qualitat amb l'objectiu de poder resoldre problemes que es presenten en l'industria del cacau en pols. Els problemes a resoldre inclouen la detecció de materials no desitjats o adulterants en el cacau en pols, i la monitorització ràpida i precisa del contingut de flavanols i metilxantines del cacau en pols durant el procés d'alcalinització. El primer capítol avalua la viabilitat del NIR, en combinació amb anàlisis quimiométrics, en la detecció de la presència de materials no desitjats o adulterants com són pellofa de cacau o farina de garrofa. Per a això, diferents mostres de cacau en pols natural i amb diferents nivells d'alcalinització (suau, mig i fort) foren barrejades en distintes proporcions de pellofa de cacau (en cacau natural) o farina de garrofa (en cacau natural i alcalinisat). Els resultats obtinguts per a NIR, combinats amb models estadístics com l'anàlisi discriminant per mínims quadrats parcials (PLS-DA) i la regressió parcial de mínims quadrats (PLS), és un mètode ràpid i eficaç per identificar materials no desitjats o adulterants com la pellofa de cacau o la farina de garrofa, amb independència del grau d'alcalinització del cacau o de torrat de la farina de garrofa. En el segon capítol, l'anàlisi composicional del cacau en pols s'orientà al control dels canvis produïts en el contingut de flavanols i metilxantines a causa del procés d'alcalinització al que se sotmet el cacau en pols. Es va determinar el contingut de catequina, epicatequina, cafeïna i teobromina mitjançant cromatografia líquida d'alta resolució (HPLC), i es van correlacionar els continguts obtinguts per a cadascun d'estos composts amb les determinacions NIR. Es van obtindré bons models per a la predicció dels composts mitjançant regressió PLS amb valors superiors a 3 per a la relació entre el rendiment i la desviació (RDP), la qual cosa demostra que els models obtinguts poden ser emprats per a la ràpida i fiable predicció del contingut de flavanols i metilxantines en cacaus naturals o amb diferents nivells d'alcalinització.
[EN] Cocoa is a product of high value, not only because of its sensory characteristics, but also because it has a high content of antioxidants and stimulating alkaloids with health effects. Due to the high demand, the cocoa powder industry has the challenge of ensuring the quality of large volumes of production in a fast and accurate way, avoiding the presence of contaminants or adulterants in the raw material, offering products where the healthy properties are preserved. The near infrared spectroscopy (NIR) is a rapid and non-destructive technology useful in the analysis of food products. The present doctoral thesis focuses on evaluating the potential use of NIR as a quality control tool in order to solve problems that arise in the cocoa industry powdered. The problems to solve include the detection of unwanted materials or adulterants in the cocoa powder, and the rapid and accurate monitorization of the flavanols and methylxanthines content in the cocoa powder during the alkalization process. The first chapter evaluates the viability of the NIR, in combination with chemometric analysis, in the detection of presence of unwanted materials or adulterants such as cocoa shell or carob flour. For this, different samples of natural cocoa powder and with different levels of alkalization (light, medium and strong) were mixed with different proportions of cocoa shell (with natural cocoa) or carob flour (with natural and alkalized cocoa). The results obtained indicate that the NIR combined with statistical models such as the partial least squares discriminant analysis (PLS-DA) and the partial least squares regression (PLS), is a fast and efficient method to identify qualitative and quantitative unwanted materials or adulterants such as shell and carob in cocoa powder, regardless of the degree of alkalization or level of roasting of carob flour. In the second chapter, the compositional analysis of cocoa powder was oriented to the control of the changes produced in the content of flavanols and methylxanthines due to the process of alkalization to which the cocoa powder is subjected. The content of catechin, epicatechin, caffeine and theobromine were determined by high performance liquid chromatography (HPLC), correlating the contents obtained for each of these compounds with the NIR determinations. Good models were obtained for the prediction of compounds by regression PLS with values above 3 for the ratio of performance to deviation (RDP), which shows that the obtained models can be used for the quick and reliable prediction of flavanol content and methylxanthines in natural cocoas and with different alkalization levels.
This Doctoral Thesis has been carried out thanks to a doctoral studies scholarship granted by the Ministry of Higher Education, Science, Technology and Innovation (SENESCYT) of the Republic of Ecuador
Quelal Vásconez, MA. (2019). Application of Infrared Spectroscopy and Chemometrics to the Cocoa Industry for Fast Composition Analysis and Fraud Detection [Tesis doctoral no publicada]. Universitat Politècnica de València. https://doi.org/10.4995/Thesis/10251/135258
TESIS
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Leite, Eduardo Miguel Bastos. "Industry 4.0 - Shop-Floor Negotiation." Master's thesis, 2019. https://hdl.handle.net/10216/122766.
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Ferreira, Inês Maria de Macedo Pinto. "Predictive Models for Shop Floor Optimization in the Agrofood Industry." Master's thesis, 2021. https://hdl.handle.net/10216/134954.
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Ferreira, Inês Maria de Macedo Pinto. "Predictive Models for Shop Floor Optimization in the Agrofood Industry." Dissertação, 2021. https://hdl.handle.net/10216/134954.
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Wu, Chun-Yung, and 吳春勇. "Auction-based Shop Floor Control System Design for Bearings Industry." Thesis, 1997. http://ndltd.ncl.edu.tw/handle/26795010725161499810.
Full textAbstract:
碩士國立交通大學
工業工程與管理學系
85
Auction-based heterarchical control architecture is proposed to design a shopfloor control system for bearings manufacturing. This essentially involves a real-time task assignment process among parts, machines,and operators through auction mechanism. In this thesis,auction theory is reviewed;a bidding information system has been designed;a real-time expert system is used for monitoringthe status on shop floor. Overall the heterarchical control approach reduces WIPs,increases machine utilization, and improves the system performance on the shop floor.
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Huang, Mei-Ting, and 黃美婷. "A Study on Internal Service Satisfaction of TFT-LCD Industry Shop Floor People." Thesis, 2010. http://ndltd.ncl.edu.tw/handle/81189737728033985218.
Full textAbstract:
碩士靜宜大學
管理碩士在職專班
98
Continuous improvement on the shop floor management and teamwork supporting are the main factors for the growth of a mature organization. Therefore, to collect the voice of shop floor people is very important for the manufacturing company. In this study, three scholars, P.Z.B., proposed the concept of measuring internal service quality. According to A Company''s characteristics, there are five dimensions of the questions made into scaled template. Then, through questionnaire survey to the shop floor people within A company, we try to understand their feedback on the perceived internal service quality as following, 1). Whether to narrow the negative affection between staff and supervisor via the implementation of Job Relations program on the basic management skills; 2). Clarify the influence between supporting functions and shop floor people. Finally, through the empirical analysis we find the results as below, 1). Personal competency (tangibles), reaction abilities (responsiveness), service attitude (reliability), problem solving (assurance), and management team’s daily assistance (empathy) have rather impact on the internal service quality satisfaction. 2). On the result of discriminant analysis, each discriminant ratio is above 80% and also demonstrated that the survey can be the effective measures for the future study.
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Chiu, Hungyuan, and 邱宏遠. "Design and Implementation of a web-based Shop Floor Control System for assembly industry." Thesis, 2002. http://ndltd.ncl.edu.tw/handle/75705869401774159767.
Full textAbstract:
碩士國立交通大學
資訊管理學程碩士班
90
For a manufactory, about 70% of its resources are contained in production lines; therefore, having a shop floor control system (SFCS) is the key to the success of a business. Along with the popularity of global enterprise and internet, the traditional centralized SFCS no longer meets global logistics demanding. To meet customers’ maximum satisfaction is what enterprises have to work for inevitably in the future. No matter the business modality is B2B (business to business) or B2C (business to customers), it is necessary to have a SFCS to satisfy the diverse demanding from customers while dealing with the competitions and challenges in this wed-based era. An e-based (e-SFCS) SFCS provides customers with a web-based SFCS, which satisfies customers’ preference and meets a variety of market demands. In this thesis, we provide a web-based SFCS to integrate production process relation information real time on-line computer, enterprise resource plans (ERP), supply chain management (SCM) and customer relationship management (CRM). It aims at building up a web-based SFCS, using VB, Java Script and ASP, to spontaneously provide the public with the control production line process real time information openly and clearly, namely, a WYSWYG (What You See is What You Get) SFCS. Through system integration and Internet, this SFCS introduced here provides both business managers and customers with control production line process real time information and remote control, so as to reduce production costs and trading time, and to gain customers’ trust; furthermore, to win the global enterprise competition. This SFCS is applicable to all the manufacturers in assembly industry, including computers, electronics and telecommunications.
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Chen, Chin-Heng, and 陳致亨. "Constructing the Capacity Constrained Drum-Buffer-Rope Shop Floor Control Model─An example for Textile Industry." Thesis, 2004. http://ndltd.ncl.edu.tw/handle/94213159574248044572.
Full textAbstract:
碩士中原大學
工業工程研究所
92
The application of Theory of Constraint (TOC) and Drum-Buffer-Rope (DBR) in practice is to manage the bottleneck resources to enhance all dimensions of performance of the system. The purpose of Shop Floor Control (SFC) is to ensure that the pace of shop floor production is smooth. SFC is in charge of the short term detail plans, execution and monitor activities. It has to provide the feedback information of the shop floor production to give assistances for managers to make appropriate managerial decisions and prompt problem-solving actions. The main purpose of this research is to construct a shop floor manage model with an emphasis on Capacity Constrained Resources (CCR) by the three shop floor managerial techniques mentioned above. And then verify the model on the basis of the data collected at the real production floor to make this model fill the bill of shop floor requirement. Through the result of final verification, we can confirm that this model works well on the reduction of shop floor material and stocks of WIP. And it also has good performance on the improvement of order delay and reduction of total production time.