Dissertationen: „EDM Products“

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Roy, Dinesh Chandra. „Computer aided process planning for EDM products“. Thesis, University of North Bengal, 2002. http://ir.nbu.ac.in/handle/123456789/1030.

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Kaya, Rabi, und Anders Ödling. „Development of an EDM-tool for theNuclear Industry“. Thesis, KTH, Maskinkonstruktion (Inst.), 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-156718.

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Electric Discharge Machining (EDM) is a machining method suitable for repair and maintenance operations in nuclear power plants. Crack removal and material sampling are two common operations where EDM is used in the nuclear power industry. Each crack removal or material sampling operation is unique, a new EDM-tool is therefore designed for every operation. This, together with the fact that the electrode used in the EDM-tool usually wears out before the crack is removed or the sample has been collected, is the foundation of this thesis. The objective was to develop one or several concepts of a modular EDM-tool with the ability to change electrode at repair location. This to shorten the development time for EDM-tools and the time for electrode change during an EDM operation. The concepts would be developed to the extent that a prototype could be manufactured and tested. The result is in accordance to the objective with one fully developed concept ready for manufacturing. It has not yet been manufactured, and therefore not been tested. There are still some sections of the tool that needs to be verified, for example the electric supply to the electrode. The concept consists of; a slim EDM-tool with the ability to lock the rotating electrode shaft, compact dielectric fluid- and electric-supply, hydraulic actuator with belt drive and an electrode magazine with place for 3 electrodes. Keywords: Nuclear, EDM, Electric Discharge Machining, Product development, Crack removal
Electric Discharge Machining (EDM) är en avverkningsmetod lämplig för reparations- och underhållsarbete i kärnkraftverk. Sprickbortagning och materialprovtagning är två vanliga operationer som utförs med hjälp av EDM inom kärnkraftsindustrin. Varje sprickbortagningsoch materialprovtagnings operation är unik, därför utvecklas ett nytt EDM-verktyg inför varje operation. Detta tillsammans med det faktum att elektroden som används i EDM-verktyget ofta slits ned innan sprickan har avverkats eller provet har tagits ligger till grund för detta examensarbete. Målet var att utveckla ett eller flera koncept av modulära EDM-verktyg med möjligheten att byta elektrod på plats där aktuell reparation utförs. Detta för att korta ned utvecklingstiden för nya EDM-verktyg och minska tiden för reparations och underhållsarbeten. Koncepten skulle utvecklas så långt att en prototyp kunde tillverkas och testas. Resultatet är i linje med målet, ett välutvecklat koncept som är redo för tillverkning och testning. Det har än så länge inte blivit tillverkat och således inte testats. Konceptet består av ett smalt EDM-verktyg med möjlighet att låsa elektrodrotationen, kompakt dielektrikum- och ström-tillförsel, hydraulisk aktuator med kuggremsdrift och ett elektrodmagasin med plats för 3 elektroder. Nyckelord: Kärnkraft, EDM, Electric Discharge Machining, Produktutveckling, Sprickborttagning

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Jakeš, Jan. „Trendy použití elektroerozivních technologií“. Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2008. http://www.nusl.cz/ntk/nusl-228107.

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In this work, description of a basic principle of electro discharge machining and its technological possibilities was made. Possibilities of individual EDM machine producers and their comparison were described. Furthermore, the use of electro discharge machining in Zdas a.s. was shown. Trends in a development of the electro discharge technology are included, too.

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Safdar, Adnan. „Microstructures and surface roughness of EBM produced Ti-6Al-4V“. Licentiate thesis, Malmö högskola, Teknik och samhälle, 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:mau:diva-7791.

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The work presented in this dissertation is concerned with the microstructures andsurface roughness of test slabs of Ti-6Al-4V produced by one of powder based AdditiveManufacturing (AM) technique namely Electron Beam melting (EBM). The effects of processparameters of a EBM system and geometry factors of a EBM build such as slabs’ thickness andheight etc. on the microstructure and the surface roughness of the EBM produced Ti-6Al-4Vhave being investigated. The processing parameters of the EBM system involved in the presentwork include beam current, scan speed, offset focus and scanning length etc. In this study threedifferent batches of samples were prepared. Microstructures of EBM built Ti-6Al-4V werestudied using Optical Microscopy (OM), Scanning Electron Microscopy (SEM), TransmissionElectron Microscopy (TEM), and X-ray diffraction (XRD). Confocal microscopy and imageanalysis codes ImageJ’s routine SurfCharJ were used to quantify the surface roughness of the testslabs. The microstructures of EBM built Ti-6Al-4V in general consist of columnar grains of priorβ phase. Inside the columnar grains there is a typical (α+β) microstructure of titanium alloyscontaining Widmanstätten α platelets and rod-shaped β phase. Grain boundary α layer has alsobeen observed on the grain boundaries of prior b columnar grains. By using TEM, the β phase inEBM built Ti-6Al-4V has been identified as a rod-like structure located on the grain boundariesof the fine a grains and often grows up along the build direction. The size of the β rods is about200nm and the distance between the β rods is ranged between 0.5 -2μm. Chemical compositionsfor different phases have been measured by TEM/EDX and volume fraction of the β phase in theEBM Ti-6Al-4V has been determined to be 2.7%. The phase transformation sequence in EBMbuilt Ti-6Al-4V has been discussed according to processing history and microstructuresobserved. It has been observed that, the size, number and geometry of prior β columnar graindepend on the sample thickness and other process parameters setting. The diameter of columnargrain varies between 2-70μm. The increase in size, number and regularity of columnar grains hasbeen observed with increase in sample thickness, beam energy density and scanning length.While with increase in height of the build it decreases. The length and smoothness of α plateletsincreases with increase in diameter of prior β columnar grain. The β phase rods are unaffected bysample thickness and process parameter settings. The sample thickness and beam energy densityhas a strong effect on the surface roughness of the test slabs. The value of surface roughnesscoefficient Ra for different test slabs varies between 1-20μm. It is observed that the surfaceroughness increases of the test slab increases with increase in thickness of the slab and beamenergy density. The possible reasons for these variations in microstructures and surfaceroughness have been discussed.

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GUPTA, NITIN. „MACHINE LEARNING PREDICTIVE ANALYTIC MODEL TO REDUCE COST OF QUALITY FOR SOFTWARE PRODUCTS“. Thesis, DELHI TECHNOLOGICAL UNIVERSITY, 2021. http://dspace.dtu.ac.in:8080/jspui/handle/repository/18484.

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In today’s world, high quality product are need of the time. The low-quality product results in the high cost. This can be explained from the quality graph below 1) Prevention cost can be define as the issue/bugs found out before the deployment/delivered to customer. This cost is initially very low but in the longer run goes up 2) Failure cost includes cost of losing customers, Root cause analysis and rectification. This cost is defiantly very huge Figure 11 : Cost of Quality Source: https://www.researchgate.net/ 5 If there can be any mechanism that can help to identify the expected issues in the prevention cost then the overall all cost of quality can be reduce as shown in below graph Figure 12 : Modified Cost of Quality Source: https://www.researchgate.net/ Electronic and Design Automation (EDA) Industry is backbone of Semiconductor Industry as it provide software tool aiding in the development of Semi-Conductors chips. EDA tools are from specification to the foundry input. Below figure shows mapping of Chip design verification and currently available tools technologies Modified prevention cost Modified TCQ 6 Figure 13 : Tools offered by EDA Industry Sourced: https://en.wikipedia.org/wiki/Electronic_design_automation Term tape out means the chip out of foundry and ready for use in electronic circuit. Re- spin means incident post Tape-out chips does not function as required and re-build is required. Cost of the tape out is minimum 5 million of dollars. Major re-spin reason is functionality issues, therefore function verification tools delivered by EDA needs to be always of high quality. A major problem faced by the Functional verification tool R&D team is to predict the numbers of the bugs that might have been introduced during the design phase to sign off the completeness and quality. If these bugs can be predicted, then the COQ can be reduced. Hence saving million of dollar to company and customer. Machine learning, a upcoming new discipline, define scientific study of algorithm and using computing power develop prediction model so that certainty of the task can be managed. In this project, prediction model for expected bugs during the development of the software is designed to help the Product manager to get confidence on quality. For the data, explanatory research and Interview was conducted with-in the Synopsys. This project has been successfully adopted with-in the Verification IP group of EDA leader and is in process to get it implemented in all different Business Units.

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Zikmund, Martin. „Interconnection between BPM and BI products“. Master's thesis, Vysoká škola ekonomická v Praze, 2008. http://www.nusl.cz/ntk/nusl-12367.

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Interconnection between various types of IT systems used in an enterprise is crucial in these days. Most of companies are using many different kinds of applications in their daily running of the enterprise which leads to necessity of sharing data across those applications to enable all employees to make a right decision upon correct information. In my diploma thesis I deal with interconnection of two systems -- Business Process Management (BPM) and Business Intelligence (BI). Both systems belong to group of top IT systems with big influence on ongoing business and right decision making on all levels from operational to strategic. My paper contains theoretical as well as practical part of the solution for interconnection of BI and BPM systems. First part is about presenting and describing basic concepts and technologies which are used in process of integration of BI and BPM. At the beginning there is a short introduction to BPM, BI and SOA. Following part is including analysis of three major ways of interconnection between BI and BPM systems. Last part of the first theoretical section presents two products. IBM FileNet P8 representative of BPM system and IBM Cognos 8 BI as a representative of BI system. Second part deals with the practical example of real integration between BI and BPM systems. In first part of this section is simple description of the scenario -- business case. After that there is a detail depiction of two different kinds of integration of BI and BPM. Analysis of benefits, advantages and further possibilities are at the end of work.

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Bourdon, Pascal. „Restauration d'images et de séquences d'images par EDP : contributions et applications en communications numériques“. Poitiers, 2004. http://www.theses.fr/2004POIT2321.

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Dans cette thèse, nous nous intéressons à l’utilisation d’opérations de restauration d’images en transmission. Un système de transmission permet de véhiculer un signal entre une source et un destinataire. Le support physique utilisé n'étant pas toujours parfait, ce signal peut présenter des erreurs en réception. En outre, d'autres erreurs peuvent être provoquées par le système de communication lui-même, en particulier en transmission d’images, où seules les données pertinentes vis-à-vis de l’œil humain sont émises. Nous proposons ici d'étudier et de concevoir plusieurs modèles de restauration par Equations aux Dérivées Partielles, afin de réduire l'impact de ces différentes erreurs. Nous proposons en particulier un nouveau modèle de lissage de séquences d'images, ainsi qu'une méthode de inpainting multi-résolution. Les applications porteront sur l'atténuation d'artefacts de compression et la correction d’erreurs pour les codeurs JPEG /MPEG/H26x, et pour un schéma de codage conjoint
This PhD research focuses on image processing in digital communications. A transmission system is a system that transmits information from one place to another through a physical path. Because this path is subject to interference and propagation disturbances, errors can occur during the reception. Additional errors may also be generated by the system itself. In order to achieve better performances, most image coding standards exploit perceptual properties of the human visual system to remove data from the source, thus introducing distortion. In this dissertation, we study and conceive several PDE (Partial Differential Equations)-based models for image restoration, so to attenuate visual impact of these errors. In particular we propose a new image sequence denoising model, as well as a multiresolution inpainting method. Current applications include compression artifacts removal and error correction on JPEG/MPEG/H. 26x images/sequences, and on a joint source/channel coding scheme as well

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Schwarz, Oliver, und Christian Kowalewski. „Softwareentwicklung ECM/WCM im Spannungsfeld KMUs–Großunternehmen“. Thelem Universitätsverlag & Buchhandlung GmbH & Co. KG, 2019. https://tud.qucosa.de/id/qucosa%3A36935.

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Der BIM-Standard hat in den letzten Jahren viel Bewegung in die Softwarelandschaft gebracht. Der Wunsch und die Notwendigkeit, Daten aus der EMC Landschaft mit den digitalen Daten der Planung und dem aktuellen Progress auf den Baustellen zu verbinden, stellt hier einen besonderen Motor dar. Die digitale Bauakte – nur ein Traum? Unternehmen unterschiedlichster Größe und Ausrichtung begleiten durch Ihre Tätigkeiten einen Neu- bzw. Umbau von der Idee bis zur Realisierung. Die Lösungsansätze bzw. Lösungen der Digitalisierung in den verschiedensten Ausprägungen, Tiefen und Teilbereichen existieren. Eine Lösung, die von den KMUs bis hin zu den Konzernen genutzt wird, haben wir aus dem Blickwinkel der Planer, Betreiber und Montageunternehmen im industriellen Anlagenbauumfeld (Industrie- und Produktionsanlagen aller Art) nicht gefunden. Die Lösung von inactio und ESZETT schaut aus zwei unterschiedlichen Blickwinkeln auf die Kunden. Die Abbildung 1 reißt das Spannungsfeld ein wenig an. inactio/eebos begleitet Ihre Kunden im Umfeld von onbase, SAP und digitalen Archiven. ESZETT kommt mit ihren Erfahrungen der Planungswelten, VR-Systemen und dem WCM-System bee aus der Planungs- und Montagebegleitung. Der Wunsch, mit einer kleinen Lösung zu beginnen (KMU), die bei den einzelnen Unternehmen für ihre Belange genutzt werden kann, hin zu der Vernetzung und der Möglichkeit des Einbindens dieser ‚Inseln‘ in einem Gesamtprojekt mit allen technischen Möglichkeiten und Verknüpfungen, soll kein Traum bleiben. [...]

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Sanni, Onimisi Calistus. „Microstructural, Mechanical and Tribological Studies of Ti-6Al-4V Thin Plates Produced by EBM Process“. Thesis, Högskolan Dalarna, Materialteknik, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:du-35321.

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The titanium alloy, Ti-6Al-4V, is vastly studied and used in many applications because it has a transformation microstructure, which can be tailored for apt properties that are consistent up to 500°C. Compared to conventional steels, this alloy favours certain applications due to its high specific strength, hardenability, corrosion resistance, biocompatibility and weldability. Its weldability makes the alloy a good candidate for additive manufacturing (AM). Ti-6Al-4V parts are widely built by the AM process of electron beam melting (EBM). However, heat transfer remains crucial in EBM process. The high intensity localized, moving, electron beam heat source and the rapid self-cooling are critical, especially in thin parts/ sections. When thin sections are built by the EBM process, there will be microstructural variation in their build direction, which can lead to the variation of their mechanical properties. It is necessary to understand the microstructure and mechanical properties of thin sections when they are used as functional parts in various applications in aerospace, automotive, medical, etc. industries. The microstructure, tribological behaviour and mechanical properties of Ti-6Al-4V, as-built EBM thin plates were studied by means of various hardness, scratch and tensile testing. The hardness and scratch tests were performed on the thin plates to correlate the microstructural variation. In-situ micro tensile test was performed inside the scanning electron microscope (SEM), to see the sample’s deformation behaviour. Microstructural characterization revealed equiaxed grains in the transverse section and the longitudinal surface exhibited columnar grains elongated along the build direction. The size of the equiaxed grains are found to vary across the thickness of the plate. The indentation and scratch hardness also vary in correlation with the varying grain size across the plate’s thickness. The micro tensile results reveal that the tensile properties of the thin plate are comparable to that of its bulk Ti-6Al-4V counterpart.

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Georgieva, Fany. „The Effect of Stealth Advertising in Newscasts on Viewers' Recall“. Scholar Commons, 2013. http://scholarcommons.usf.edu/etd/4677.

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Product placement, also referred to as stealth advertising, raises important questions when it comes to television because a far larger audience views television than movies. Product placement in newscasts is even more controversial. Television news is expected to be free of persuasive attempts and provide citizens with basic information that is of public importance. Yet, product placement blurs the line between journalism and commercial promotion, thus destroying the integrity of the news. Product placement in newscasts raises ethical questions about the effect it has on viewers, provided that they do not realize that they are presented with commercials, framed as news story. Yet, this paper argues that, since viewers focus on the actual news and do not elaborate consciously on the advertised product or brand, product placement in newscasts has little effect on their brand recall. To support this hypothesis the paper compares brand recall from product placement and commercials. Results revealed that this hypothesis is partially true. Important discovery from this study is the fact that product placement directly affects news credibility.

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Lee, Cheuk-chi, und 李卓智. „To live and forget: the limits of comprehension and remembrance in the feature films of Hirokazu Kore-eda“. Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2012. http://hub.hku.hk/bib/B47753018.

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Often regarded as one of the eminent humanist directors working today, Japanese filmmaker Kore-eda Hirokazu has demonstrated consistent authorial intentions and thematic orientations throughout his filmography despite the variety of styles – from social documentary to period comedy – involved. Through in-depth textual analysis of his narrative strategies and exhaustive research on the English-language literature about the director, this study seeks to shed light on the first seven feature films in his career. Commentaries by Kore-eda on his creative impulse and filmmaking method, collected from both diverse sources of media interviews and insightful analyses published in academic journals, are meticulously examined. By taking a formalistic perspective, this thesis sets out to consolidate existing research in the field, while providing a systematic study that builds upon authoritative investigation. The study begins with an analysis of the filmmaking techniques utilised in Maborosi and Distance, both contemplative narratives that seek to capture the fragmented consciousness of the characters in mourning. With its seemingly naturalistic composition, Maborosi nonetheless presents a partially abstract narrative that is directly reflective of the grieving protagonist’s inner state. Distance, on the contrary, offers hints to the possible cause of the family members’ plans to join a religious cult and commit mass suicides – such as the emotional isolation in an urban society – while providing a final plot twist that confirms the slippery quality of any assumption. Both films imply that full comprehension of one’s family members is impossible. In the following chapter, the coherent authorial concerns in Kore-eda’s fourth to sixth feature – Nobody Knows, Hana and Still Walking – are illustrated along with his fascination with the process of forgetting. Kore-eda, who started out as a socio-documentarist, borrowed a real-life tragedy as the framework for Nobody Knows to construct a subversive take on the traditional perception of the Japanese family, extending a decidedly non-judgemental view on the irresponsible parents and celebrating the autonomy of the new generation. The solace of memory is highlighted in the anti-bushido comedy Hana, which is interpreted as Kore-eda’s protest against tradition and, by extension, the older generation. The director’s recurrent themes of broken promises, failed expectations and forgotten family legacies are highlighted with the slice-of-life domestic drama, Still Walking. The thesis then concludes with an analysis of the fantastic representations of the human condition in After Life and Air Doll, Kore-eda’s only two fantasy films to date. His use of quasi-realist documentary style in After Life facilitates a largely non-religious meditation on the importance of human co-dependence and recollection. The film’s metaphysical setting is compared to the absurd existence pondered in Albert Camus’s “The Myth of Sisyphus”, and its central premise – that the affirmation of one single memory can validate a person’s entire existence – is compared to Friedrich Nietzsche’s thesis of the eternal return. Also adopting the perspective of a non-human protagonist, Air Doll extends Kore-eda’s perception of the depressing prospects of modern life – substantiating the city dwellers’ pervasive sense of emptiness, while constantly looking for the beauty of living.
published_or_final_version
Comparative Literature
Master
Master of Philosophy

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Millot, Nicolas. „Couverture des produits dérivés par minimisation locale de critères de risque convexes“. Phd thesis, Ecole Centrale Paris, 2012. http://tel.archives-ouvertes.fr/tel-00722225.

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On s'intéresse dans cette thèse à la couverture des produits dérivés dans des marchés incomplets. L'approche choisie peut se voir comme une extension des travaux de M. Schweizer sur la minimisation locale du risque quadratique. En effet, tout en restant dans le cadre de la modélisation des actifs par des semimartingales, notre méthode consiste à remplacer le critère de risque quadratique par un critère de risque plus général, sous la forme d'une fonctionnelle convexe du coût local. Nous obtenons d'abord des résultats d'existence, d'unicité et de caractérisation des stratégies optimales dans un marché sans friction, en temps discret et en temps continu. Puis nous explicitons ces stratégies dans le cadre de modèles de diffusion avec et sans sauts. Nous étendons également notre méthode au cas où la liquidité n'est plus infinie. Enfin nous montrons par le biais de simulations numériques les effets du choix de la fonctionnelle de risque sur la constitution du portefeuille optimal.

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GALATI, MANUELA. „Design of product and process for Metal Additive Manufacturing - From design to manufacturing“. Doctoral thesis, Politecnico di Torino, 2017. http://hdl.handle.net/11583/2688272.

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Additive Manufacturing (AM) is a recent new manufacturing approach that is based on the fabrication of each object using a layer-by-layer strategy. From a manufacturability perspective of components, this approach involves the possibility to manufacture parts of any geometric complexity without using additional tools and machines. Particular attention is dedicated to the powder bed fusion (PBF) AM processes in which a laser beam or an electron beam is used to sinter or melt metallic powders which are named Selective Laser Melting (SLM) and Electron Beam Melting (EBM). In fact, in these last years, growing interesting of the industry has been outlined for metal AM, because they offer exclusive benefits such as the direct production of complex functional and/or end-usable parts made with excellent materials. Today it is thus recognised the need for guidelines and tools for effective introduction of the AM processes in the metal industry. To address this issue the aim of the presented thesis was to propose concurrent engineering (CE) tools based on a comprehensive approach from design to manufacturing. The metal PBF-AM processes have been dealt by two subsequent steps. The first one addressed the development of a process selection (PS) tool that combines materials, processes and designs for the choice of the best alternative to produce a metal component. The second one concerned with the development of a model for the process simulation that can contribute to the understanding of the process. The proposed PS tool aimed to introduce the metal AM processes as alternative to producing components. In particular, the tool was implemented in order to consider the comparison between different metal AM manufacturing processes as well as AM, machining and casting. In this approach, each alternative is represented by a combination of the design, material and process features. A well-structured open architecture for PS has been suggested. The tool works by considering the requirements of the component regarding geometry constraints and specifications. A methodology based on mathematical modeling design decisions involving multiple attributes was suggested to assess the technical and economic aspects in order to analyse and rank the alternatives. For this purpose, an index, called DePri, was introduced to resume technical aspects and offers a quantitative comparison between the alternatives. On the other, the economic aspect for AM has been addressed by providing a detail model cost. The results of the process selection in which the technical aspect of each alternative has been considered and the alternatives can be compared with the corresponding manufacturing cost. An application of the proposed tool was demonstrated by an industrial case study in which the objective was to assess the best technology resource between 3-axis CNC machining, SLM and EBM for future investments of the company in the AM technologies. The second issue addresses the optimisation of the metal PBF-AM process by virtual simulation for a suitable selection of the process parameters. In this context, the resulting review showed the SLM as a consolidated process respect to process simulation while EBM has received less attention despite the numerous applications in the medical and aerospace fields. In order to improve the effectiveness and reliability of EBM FE simulation, a new type of modelling has been introduced for the energy source and the powder material properties which have been included in a thermal numerical model. The potential of the proposed modelling was demonstrated using comparison with existing experimental literature data for a single straight line, existing model in published literature and experimental measurements for multibeam and continuous line melting. The model was then used to investigate the effects of the process parameters on the microstructures of a TiAl alloy.

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Tabassum, Sinin, und Md Soud Al Fahad. „Impact of product involvement and consumer expertise on online consumer review for consumer purchase intention“. Thesis, Högskolan i Halmstad, Akademin för ekonomi, teknik och naturvetenskap, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:hh:diva-42327.

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Purpose: To investigate the effects of online reviews on consumer purchase intention considering the moderating role of product involvement and consumer expertise. Methodology: To reach our goal in this paper, we conduct a descriptive study in a deductive way. This is quantitative research in which the relationship between online reviews and consumer buying behavior will be tested. The research strategy of the study is an online survey. The sample size is 200 respondents considering confidence level 95% and confidence interval 7. Data editor IBM SPSS is used to performing the data analysis. Findings: High-low product involvement and high-low consumer expertise have an impact on the factor of online review (quality, quantity, and credibility) significantly and it affects the purchase intention of the consumer. The study created a conceptual model, which is adapted from the ELM model that considers expertise, involvement, perceived quality, quantity credibility of online consumer review and intent to purchase. This study found that the effect of review type (quality) on the intention of purchase was stronger for both experts and novice and both high-low involvement products. Depending on the level of involvement, the quantity of review on purchase intention increases but the quantity of review on the intention to purchase did not differ under both low involvement & high expertise. Again, individuals rely on source credibility when product involvement is low. But the credibility of the review did not differ on the purchase of intention under low involvement and low expertise situation. Research implications: This study applies the ELM model to measure the cognitive factor (review factor) and motivation factor (involvement and expertise) together. This study shows consumers with different levels of involvement and expertise prefer different levels of online review factors. The marketer could classify online review information into different category lines like the attribute-based review, benefit-based review, etc. and based on the analysis, the marketer can make a different plan for a different level of consumer (expert and involved consumer). Keywords: Quality, quantity, and credibility of review, Product involvement, consumer expertise, elaboration likelihood model (ELM Model).

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PAPA, GIULIA. „Study of airborne particulate matter (PM) contaminating the honey bee Apis mellifera Linnaeus, 1758 and bee products“. Doctoral thesis, Università Cattolica del Sacro Cuore, 2021. http://hdl.handle.net/10280/94210.

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Apis mellifera Linnaeus (1758) è un insetto eusociale conosciuto in tutto il mondo sia per la produzione di miele sia per il suo ruolo di impollinatore, uno dei servizi ecosistemici fondamentali per la biodiversità del pianeta. Durante la sua attività di foraggiamento, l’ape è esposta agli inquinanti ambientali tra cui il particolato atmosferico aerodisperso (PM). Il particolato atmosferico può depositarsi sul corpo dell’insetto e infine contaminare anche i prodotti apistici come polline e miele. Il PM può avere diverse dimensioni (es. PM10, PM2.5, PM0.1), composizione chimica, morfologia e fonti di emissione (naturale o antropica). Nel presente elaborato di tesi, tecniche di microscopia elettronica a scansione (SEM-EDX) sono state utilizzate per caratterizzare la contaminazione da PM di origine antropica del corpo dell’ape e dei suoi prodotti (Capitolo 2 e Capitolo 3) e analisi molecolari per studiare gli eventuali effetti sub-letali sul microbiota intestinale di api esposte ai PM per via orale (Capitolo 4).
Apis mellifera Linnaeus (1758) order Hymenoptera family Apidae, is a eusocial insect widely known for its role in pollination, a fundamental ecosystem service for plant biodiversity and ultimately for the planet. During flight and foraging activity, the honey bee can collect airborne particulate matter (PM) on their own body, especially on the forewings, and can also contaminate bee products as pollen and honey. Particulate matter can originate from natural or anthropic sources, and is characterised by size (e.g., PM10, PM2.5, PM0.1), chemical composition, and morphology. In this thesis, honey bee, pollen and honey were used as bioindicator of PM – from coarse to ultrafine – in industrial areas of the Po Valley, Italy (Chapter 2 and Chapter 3). The (sub-lethal) effects of Titanium dioxide – a widespread airborne PM1 pollutant – on the honey bee through oral exposure was then investigated (Chapter 4). The technique used to analyse the PM contaminating bees and bee products is the scanning electron microscopy (SEM) coupled with X-ray spectrometer (EDX). EDX spectra allowed us to obtain chemical information from specimens, while backscattered-electron (BSE) imaging and elemental mapping provided both compositional and topographic information of PM.

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PAPA, GIULIA. „Study of airborne particulate matter (PM) contaminating the honey bee Apis mellifera Linnaeus, 1758 and bee products“. Doctoral thesis, Università Cattolica del Sacro Cuore, 2021. http://hdl.handle.net/10280/94210.

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Apis mellifera Linnaeus (1758) è un insetto eusociale conosciuto in tutto il mondo sia per la produzione di miele sia per il suo ruolo di impollinatore, uno dei servizi ecosistemici fondamentali per la biodiversità del pianeta. Durante la sua attività di foraggiamento, l’ape è esposta agli inquinanti ambientali tra cui il particolato atmosferico aerodisperso (PM). Il particolato atmosferico può depositarsi sul corpo dell’insetto e infine contaminare anche i prodotti apistici come polline e miele. Il PM può avere diverse dimensioni (es. PM10, PM2.5, PM0.1), composizione chimica, morfologia e fonti di emissione (naturale o antropica). Nel presente elaborato di tesi, tecniche di microscopia elettronica a scansione (SEM-EDX) sono state utilizzate per caratterizzare la contaminazione da PM di origine antropica del corpo dell’ape e dei suoi prodotti (Capitolo 2 e Capitolo 3) e analisi molecolari per studiare gli eventuali effetti sub-letali sul microbiota intestinale di api esposte ai PM per via orale (Capitolo 4).
Apis mellifera Linnaeus (1758) order Hymenoptera family Apidae, is a eusocial insect widely known for its role in pollination, a fundamental ecosystem service for plant biodiversity and ultimately for the planet. During flight and foraging activity, the honey bee can collect airborne particulate matter (PM) on their own body, especially on the forewings, and can also contaminate bee products as pollen and honey. Particulate matter can originate from natural or anthropic sources, and is characterised by size (e.g., PM10, PM2.5, PM0.1), chemical composition, and morphology. In this thesis, honey bee, pollen and honey were used as bioindicator of PM – from coarse to ultrafine – in industrial areas of the Po Valley, Italy (Chapter 2 and Chapter 3). The (sub-lethal) effects of Titanium dioxide – a widespread airborne PM1 pollutant – on the honey bee through oral exposure was then investigated (Chapter 4). The technique used to analyse the PM contaminating bees and bee products is the scanning electron microscopy (SEM) coupled with X-ray spectrometer (EDX). EDX spectra allowed us to obtain chemical information from specimens, while backscattered-electron (BSE) imaging and elemental mapping provided both compositional and topographic information of PM.

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Ferreira, Karine Araújo. „Impactos do EDI e da Internet na logística de empresas da indústria de alimentos“. Universidade Federal de São Carlos, 2005. https://repositorio.ufscar.br/handle/ufscar/3806.

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Made available in DSpace on 2016-06-02T19:52:14Z (GMT). No. of bitstreams: 1 834.pdf: 1092370 bytes, checksum: 1b48851ae031e13ba0c702375ef3e2e1 (MD5) Previous issue date: 2005-08-02
Financiadora de Estudos e Projetos
Operations management in the global economy has induced food industry s companies to promote a productive reorganization which can be verified by the technological, organizational and commercial changes in their activities. The adoption of integrated logistics contributes to cost reduction and flexibility gains in means of outputs production and circulation. Information sharing amongst companies and their business partners makes possible the coordination of new forms of relationships and their efficient logistical management. Several information and communication technologies have presented wide use in logistics, such as the Electronic Data Interchange (EDI) and the Internet, both being analyzed in this work. These technologies support the decisionmaking process of technical and organizational relationships between the productive actors, through fast and form-requested information exchange. The objective of this dissertation is to investigate the impacts carried through EDI and Internet s usage as a follow-up framework related to the performance and organization of sweet-foodprocessing companies logistical activities, aiming the electronic information exchange with their partners of the immediate chain. Nevertheless, three logistical activities are evaluated in this work: transport, inventory management and order processing; being the first two responsible for logistics cost and the last one representing the most timeconsuming activity in order cycles. The theoretical basis of this analysis was encrusted with bibliographical revisions of related subjects, such as: Logistics, Information System, Communication and Information Technology, EDI, Internet and Food Industry. The empirical research was carried through three case-studies within the candy food s companies. The results shed light on how the logistical activities are organized into companies supplying and physical distribution areas, as well as the reasons and willingness for EDI and Internet s adoption on certain activities and their overall benefits. Several results from using electronic information exchange to coordinate and improve logistics activities were verified, such as: better knowledge of transport planning and vehicles programming; better inventory visibility; greater agility in the reception and order processing; errors, cycle time and additional freights reduction.
A gestão de operações na economia globalizada tem induzido as empresas da indústria de alimentos a promoverem uma reestruturação produtiva que pode ser verificada pelas mudanças tecnológicas, organizacionais e comerciais em suas atividades. A adoção da logística integrada contribui para redução de gastos e flexibilidade dos meios de produção e de circulação de produtos. A eficiente gestão da logística e coordenação das novas formas de relacionamento da empresa com seus parceiros de negócios são viabilizadas pelo compartilhamento de informações. Dentre as tecnologias de informação e comunicação que têm apresentado vasta utilização na logística estão a Troca/Intercâmbio Eletrônico de Dados (EDI - Electronic Data Interchange) e a Internet, que serão analisados neste trabalho. Estas tecnologias apóiam a tomada de decisão nas relações técnicas e organizacionais entre os atores produtivos, possibilitando a troca de informações de forma rápida e precisa. Essa dissertação tem como objetivo investigar os impactos provocados pelo uso do EDI e da Internet na organização e desempenho de atividades logísticas de empresa processadora de alimentos doces na troca eletrônica de informação com seus parceiros da cadeia imediata. As atividades logísticas a serem avaliadas neste trabalho são: transporte, gestão de estoques e processamento de pedidos; as primeiras por serem as principais responsáveis pelo custo logístico e a última por representar a maior parte do tempo de ciclo dos pedidos. O aporte teórico para basear esta análise foi construído por revisão bibliográfica de: Logística, Sistema da Informação, Tecnologia da Informação e Comunicação, EDI, Internet e Indústria de Alimentos. A pesquisa empírica foi realizada com estudos de casos em três empresas de alimentos doces. Os resultados relatam como é a organização das atividades logísticas nas áreas de suprimento e distribuição física das empresas, assim como o uso do EDI e Internet, motivos para sua adoção, atividades que são aplicados e benefícios obtidos. Dentre os impactos verificados pelo uso da troca eletrônica de informações no desempenho e organização das atividades logísticas das empresas, destacam-se melhor conhecimento para planejamento de transporte e programação de veículos, visibilidade dos estoques, maior agilidade na recepção e processamento de pedidos e informações, redução de erros, do tempo de ciclo e de fretes adicionais.

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Milton, Samuel. „Study on the machinability and surface integrity of Ti6Al4V produced by Selective Laser Melting (SLM) and Electron Beam Melting (EBM) processes“. Thesis, Tours, 2018. http://www.theses.fr/2018TOUR4011/document.

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Les technologies de fabrication additive(FA) basées sur la technique de fusion laser sur lit de poudres, telles que les procédés de fusion sélective laser (Selective Laser Melting ‘SLM’) et de fusion par faisceau d'électrons (Electron Beam Melting ‘EBM’), ne cessent de se développer afin de produire des pièces fonctionnelles principalement dans les domaines aérospatial et médical. Le procédé de fabrication additive offre de nombreux avantages, tels que la liberté de conception, la réduction des étapes de fabrication, la réduction de la matière utilisée, et la réduction de l'empreinte carbone lors de la fabrication d'un composant. Néanmoins, les pièces obtenues nécessitent une opération d’usinage de finition afin de satisfaire les tolérances dimensionnelles et l’état de surface
Additive Manufacturing (AM) techniques based on powder bed fusion like Selective Laser Melting(SLM) and Electron Beam Melting processes(EBM) are being developed to make fully functional parts mainly in aerospace and medical sectors. There are several advantages of using AM processes like design freedom, reduced process steps, minimal material usage and reduced carbon footprint while producing a component. Nevertheless, the parts are built with near net shape and then finish machined to meet the demands of surface quality and dimensional tolerance

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Řádková, Lucie. „Redukce korozních vrstev mosazi pomocí nízkotlakého nízkoteplotního plazmatu“. Doctoral thesis, Vysoké učení technické v Brně. Fakulta chemická, 2015. http://www.nusl.cz/ntk/nusl-234528.

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This thesis presents results of the corrosion layers removal which could be found on the archaeological artefact surfaces. The low pressure low temperature plasma reduction was used for this purpose. Brass samples were chosen for this study. Two different ways have been used to form model corrosion layers. Several sets of corrosion layers were prepared in laboratory in two different corrosion atmospheres, namely ammonia atmosphere and atmosphere of hydrochloric acid. These samples were placed into desiccator. Small quantities of sand were added to some sets of samples so samples with sandy incrustation were prepared. The corrosion layers had been usually formed during four weeks. The second way, which was used to prepare model corrosion layer, was the natural corrosion in soil or compost. In this case, the corrosion layers had been formed approximately 2 years. The samples were treated in the low pressure (150 Pa) cylindrical Quartz reactor (90 cm long and 9.5 cm in diameter) with a pair of external copper electrodes connected via the matching network to a radiofrequency generator (13.56 MHz). The flows of working gases were set by independent mass flow controllers. Whole system was continuously pumped by the rotary oil pump which was separated from the discharge reactor by liquid nitrogen trap with aluminium chips eliminating dust and reactive species from the gas flow. Each sample was placed on a glass holder at the reactor center. Plasma was generated in pure hydrogen or in mixture of hydrogen and argon. Total flow of working gas was 50 sccm. Different ratios of gas mixture were tested, the ratio 30 sccm hydrogen and 20 sccm argon flows was the best. RF discharge was used in a continuous and pulsed regime. Pulsed mode was carried out with various duty cycle at the frequency of 1000 Hz. There were two ways of temperature monitoring. The sample temperature during the treatment was monitored by a K-type thermocouple installed inside the sample in the first case. Thermometer optical probe was connected to the sample surface by a small stainless plate and allowed continuous sample temperature monitoring in the second way. Safe object temperature for copper and copper alloys is 100–120 °C. To avoid exceeding this temperature, power control or the duty cycle in pulse mode were automatically controlled if thermometer optical probe was used. Plasma chemical treatment is based on generation of reactive atomic hydrogen in plasma discharge. The main reactions during reduction were reactions between oxygen and chloride contained in the corrosion layer and the hydrogen ions and neutral atoms generated in the plasma. These reactions create an unstable OH radical, which emits light in the region of 306–312 nm. This radiation was detected by the optical emission spectroscopy using Ocean Optics HR4000 spectrometer with 2400 gr/mm grating. Data obtained from this method were used to calculate rotational temperatures and integral intensity of OH radicals that were used for the process monitoring. Corrosion layer was not completely removed during the reduction, but due to the reactions which occur in the plasma corrosion layer became brittle and after plasma chemical treatment can be removed easily. The SEM-EDS material analyses were carried out before and after treatment of some samples. Some samples were analysed by XRD analysis. EDS analysis showed that amount of oxygen and chloride was decreased, mainly at 400 W pulse mode.

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Javeid, Umer. „Okun's Law : Empirical Evidence from Pakistan (1981-2005)“. Thesis, Södertörns högskola, Institutionen för samhällsvetenskaper, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:sh:diva-16168.

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The main objective of this research paper is to find the association between unemployment rate and GDP growth which is presented empirically by Arthur Okun’s in early 1960s. For this purpose I have used annual time series data during the period 1981-2005 of Pakistan. I applied difference version of Okun’s law which is more appropriate to access results directly from empirical data. In order to find long run relation between the variables I used Engle-Granger cointegration technique and Error Correction Mechanism (ECM) to find the short term behavior of GDP growth to its long run value. This paper verifies negative relationship between unemployment rate and GDP growth and both variables have long run relation with each other. Moreover GDP growth will adjust more quickly towards equilibrium in the long run.

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Fuster, Laura. „Mise en oeuvre d’une démarche intégrée pour identifier des contaminants pertinents dans l’environnement“. Thesis, Bordeaux, 2017. http://www.theses.fr/2017BORD0880/document.

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De nos jours, l’évaluation de la qualité d’un milieu naturel repose traditionnellement sur des analyses ciblant des molécules déjà connues pour être biologiquement actives. Cependant ces molécules ne reflètent que partiellement les effets biologiques observés et la complexité des matrices environnementales. Par ailleurs, les contaminants dans l’environnement subissent des phénomènes de dégradation (hydrolyse, biodégradation, photodégradation). Ces processus peuvent conduire à la génération de produits de transformation qui sont encore trop peu pris en compte dans l’évaluation du risque, alors qu’ils sont susceptibles d’occasionner des effets toxiques plus importants que les molécules mères. L’impact écotoxicologique de ces mélanges nécessite préalablement l’obtention d’une vision globale quant à la présence et au devenir de ces molécules.Dans ce contexte, ces travaux appliquent une méthodologie pluridisciplinaire afin d’identifier des molécules préoccupantes et pertinentes à surveiller. Pour cela, ce travail s’appuie sur des analyses ciblées ultra-traces, des outils bioanalytiques, et des analyses non ciblées, qui ont été appliqués sur des échantillons environnementaux ou issus d’études en laboratoire mimant l’évolution des matrices environnementales. Au final, cette étude a permis : (1) d’identifier des molécules préoccupantes en estuaire de Seine sur la base de leur occurrence et de leur persistance, (2) d’identifier de nouveaux produits de transformation et (3) d’identifier les molécules responsables d’activités biologiques dans des matrices très complexes
To date, environmental risk assessment is based on a restricted number of molecules assessed by targeted chemical analyses. However, this approach give a partial picture of co-occurrence of known and unknown compounds. Moreover, in the aquatic environment, chemicals are not completely mineralized and are subject to abiotic and biotic processes. Transformation products (TPs) can be more toxic and more persistent than the parent compound. However, TPs are not typically included in classical monitoring and risk assessment. Because of complexity and variability of these matrices and the restricted number of molecules focused in targeted chemical analyses, selection of relevant molecules for environmental monitoring is often laborious.In this context, an integrative approach was used in order to identify chemicals of concern for a classical monitoring. This work has been realized on environmental complex samples and on laboratory-generated samples. A combination of targeted, non-targeted analyses and in vitro bioassays was performed and allowed to: (1) identify polar chemical of concern in the Seine estuary on the basis of occurrence and persistence, (2) identify new transformation products and (3) identify compounds responsible of biological activity observed in complexes matrices

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García-Romeu, Martínez Manuel Alfredo. „Contribución a la determinación y simulación de las vibraciones e impactos en operaciones de transporte y distribución de productos de consumo embalados“. Doctoral thesis, Universitat Politècnica de València, 2008. http://hdl.handle.net/10251/2927.

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El trabajo se acoge a la modalidad de tesis por compendio de publicaciones del Departamento de Proyectos de Ingeniería de la Universidad Politécnica de Valencia. Consta de seis artículos, de los cuales, dos de ellos han sido publicados en la revista "Packaging Technology and Science", otros dos artículos publicados en "Advances in Experimental Mechanics Vols 7-8", un quinto artículo publicado en "World Congress on Engineering 2007, Vols 1 and 2" y un sexto artículo enviado y pendiente de ser aceptado en la revista "Packaging Technology and Science". El nexo común que los une es el de profundizar en la generación de nuevo conocimiento dentro del campo de la ingeniería del embalaje, siendo su objetivo final, el de mejorar las técnicas actuales de simulación de los riesgos transmitidos al producto y su embalaje en los procesos de transporte y distribución. Las investigaciones planteadas y detalladas en cada uno de los artículos pretenden aportar una contribución parcial a un objetivo tan ambicioso como el planteado. Uno de los abusos mecánicos importantes, aplicado al producto embalado durante el proceso de transporte y distribución, son los impactos o caídas a los que son sometidos los productos embalados. El primer artículo de investigación se ha centrado en la medida y análisis de estos impactos recibidos por productos embalados que son enviados por avión mediante empresas transportistas de paquetería (DHL y FedEx) entre Europa y USA, obteniendo datos necesarios para simular en laboratorio las condiciones intercontinentales del transporte de paquetería para el correcto diseño de los embalajes de protección. La severidad de los impactos a menudo se describe en función de su altura de caída-libre equivalente (EDH) y de la orientación del impacto, para así facilitar los ensayos de caída en laboratorio. El enfoque generalmente utilizado es utilizar un paquete que contiene un registrador de aceleraciones y procesar los datos obtenidos para obtener una distribución estad
García-Romeu Martínez, MA. (2008). Contribución a la determinación y simulación de las vibraciones e impactos en operaciones de transporte y distribución de productos de consumo embalados [Tesis doctoral no publicada]. Universitat Politècnica de València. https://doi.org/10.4995/Thesis/10251/2927
Palancia

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Duncan, Scott Joseph. „Including severe uncertainty into environmentally benign life cycle design using information gap-decision theory“. Diss., Atlanta, Ga. : Georgia Institute of Technology, 2008. http://hdl.handle.net/1853/22540.

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Thesis (Ph. D.)--Mechanical Engineering, Georgia Institute of Technology, 2008.
Committee Chair: Bras, Bert; Committee Member: Allen, Janet; Committee Member: Chameau, Jean-Lou; Committee Member: McGinnis, Leon; Committee Member: Paredis, Chris.

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Kuriger, Raymond J. „Phase Analysis and Modeling of Scale Deposition in Steel Tubes“. Ohio University / OhioLINK, 2016. http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1450375676.

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Saulich, Sven. „Generic design and investigation of solar cooling systems“. Thesis, Loughborough University, 2013. https://dspace.lboro.ac.uk/2134/13627.

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This thesis presents work on a holistic approach for improving the overall design of solar cooling systems driven by solar thermal collectors. Newly developed methods for thermodynamic optimization of hydraulics and control were used to redesign an existing pilot plant. Measurements taken from the newly developed system show an 81% increase of the Solar Cooling Efficiency (SCEth) factor compared to the original pilot system. In addition to the improvements in system design, new efficiency factors for benchmarking solar cooling systems are presented. The Solar Supply Efficiency (SSEth) factor provides a means of quantifying the quality of solar thermal charging systems relative to the usable heat to drive the sorption process. The product of the SSEth with the already established COPth of the chiller, leads to the SCEth factor which, for the first time, provides a clear and concise benchmarking method for the overall design of solar cooling systems. Furthermore, the definition of a coefficient of performance, including irreversibilities from energy conversion (COPcon), enables a direct comparison of compression and sorption chiller technology. This new performance metric is applicable to all low-temperature heat-supply machines for direct comparison of different types or technologies. The achieved findings of this work led to an optimized generic design for solar cooling systems, which was successfully transferred to the market.

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Tröger, Ralph. „Supply Chain Event Management – Bedarf, Systemarchitektur und Nutzen aus Perspektive fokaler Unternehmen der Modeindustrie“. Doctoral thesis, Universitätsbibliothek Leipzig, 2014. http://nbn-resolving.de/urn:nbn:de:bsz:15-qucosa-155014.

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Supply Chain Event Management (SCEM) bezeichnet eine Teildisziplin des Supply Chain Management und ist für Unternehmen ein Ansatzpunkt, durch frühzeitige Reaktion auf kritische Ausnahmeereignisse in der Wertschöpfungskette Logistikleistung und -kosten zu optimieren. Durch Rahmenbedingungen wie bspw. globale Logistikstrukturen, eine hohe Artikelvielfalt und volatile Geschäftsbeziehungen zählt die Modeindustrie zu den Branchen, die für kritische Störereignisse besonders anfällig ist. In diesem Sinne untersucht die vorliegende Dissertation nach einer Beleuchtung der wesentlichen Grundlagen zunächst, inwiefern es in der Modeindustrie tatsächlich einen Bedarf an SCEM-Systemen gibt. Anknüpfend daran zeigt sie nach einer Darstellung bisheriger SCEM-Architekturkonzepte Gestaltungsmöglichkeiten für eine Systemarchitektur auf, die auf den Designprinzipien der Serviceorientierung beruht. In diesem Rahmen erfolgt u. a. auch die Identifikation SCEM-relevanter Business Services. Die Vorzüge einer serviceorientierten Gestaltung werden detailliert anhand der EPCIS (EPC Information Services)-Spezifikation illustriert. Abgerundet wird die Arbeit durch eine Betrachtung der Nutzenpotenziale von SCEM-Systemen. Nach einer Darstellung von Ansätzen, welche zur Nutzenbestimmung infrage kommen, wird der Nutzen anhand eines Praxisbeispiels aufgezeigt und fließt zusammen mit den Ergebnissen einer Literaturrecherche in eine Konsolidierung von SCEM-Nutzeffekten. Hierbei wird auch beleuchtet, welche zusätzlichen Vorteile sich für Unternehmen durch eine serviceorientierte Architekturgestaltung bieten. In der Schlussbetrachtung werden die wesentlichen Erkenntnisse der Arbeit zusammengefasst und in einem Ausblick sowohl beleuchtet, welche Relevanz die Ergebnisse der Arbeit für die Bewältigung künftiger Herausforderungen innehaben als auch welche Anknüpfungspunkte sich für anschließende Forschungsarbeiten ergeben.

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Kinuthia, Wanyee. „“Accumulation by Dispossession” by the Global Extractive Industry: The Case of Canada“. Thèse, Université d'Ottawa / University of Ottawa, 2013. http://hdl.handle.net/10393/30170.

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This thesis draws on David Harvey’s concept of “accumulation by dispossession” and an international political economy (IPE) approach centred on the institutional arrangements and power structures that privilege certain actors and values, in order to critique current capitalist practices of primitive accumulation by the global corporate extractive industry. The thesis examines how accumulation by dispossession by the global extractive industry is facilitated by the “free entry” or “free mining” principle. It does so by focusing on Canada as a leader in the global extractive industry and the spread of this country’s mining laws to other countries – in other words, the transnationalisation of norms in the global extractive industry – so as to maintain a consistent and familiar operating environment for Canadian extractive companies. The transnationalisation of norms is further promoted by key international institutions such as the World Bank, which is also the world’s largest development lender and also plays a key role in shaping the regulations that govern natural resource extraction. The thesis briefly investigates some Canadian examples of resource extraction projects, in order to demonstrate the weaknesses of Canadian mining laws, particularly the lack of protection of landowners’ rights under the free entry system and the subsequent need for “free, prior and informed consent” (FPIC). The thesis also considers some of the challenges to the adoption and implementation of the right to FPIC. These challenges include embedded institutional structures like the free entry mining system, international political economy (IPE) as shaped by international institutions and powerful corporations, as well as concerns regarding ‘local’ power structures or the legitimacy of representatives of communities affected by extractive projects. The thesis concludes that in order for Canada to be truly recognized as a leader in the global extractive industry, it must establish legal norms domestically to ensure that Canadian mining companies and residents can be held accountable when there is evidence of environmental and/or human rights violations associated with the activities of Canadian mining companies abroad. The thesis also concludes that Canada needs to address underlying structural issues such as the free entry mining system and implement FPIC, in order to curb “accumulation by dispossession” by the extractive industry, both domestically and abroad.

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Naude, Johannes Jacobus. „A neural-network/expert system based approach for design improvements of products manufactured by the EDM process“. Thesis, 2014. http://hdl.handle.net/10210/12036.

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Chang, Lian-Shun, und 張良舜. „A Study on the Measurement of Mechanical Parts Produced by Wire-EDM Using Machine Vision“. Thesis, 2006. http://ndltd.ncl.edu.tw/handle/80569094794127392659.

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碩士
華梵大學
機電工程研究所
94
Vague edge-areas often appear in CCD images of micro-mechanical parts (MMP’s). Possible causes are MMP thickness, high magnification lens, and un-optimized image taken conditions. Difficulties in focusing high thickness of MMP’s using high magnification lens introduce vague edge-areas, and hence, measurement errors. In this paper, a novel measurement method based on a machine vision system is proposed to measure profiles of micro-mechanical parts (MMP) by wire-EDM. In this method, measurement procedures are suggested which extract vague edge-area first, and then, fit and link break-profiles to achieve a more accurate MMP profile. Sobel filter and image processing techniques are employed to segment vague edge-area of a MMP image. Central moment and polynomial curve fitting are then used to find segment-lines in vague edge-area. Finally, Bezier curve is employed to link break-profiles of edges of the MMP image. Experimental results show good accuracy, and can effectively estimate the profile of a MMP image. Indeed, this method is immediately available for industrial applications in MMP measurements. This paper presents a new method that can define profiles for indistinct edges of MMP images by Sobel filter, image processing techniques, central moment and polynomial curve fitting, and Bezier curve. The purposes of these three techniques are: • Sobel, Prewitt filters, and other image processing techniques – to extract inlier profile, suburb profile, and vague edge-area of MMP image. • Central moment and Polynomial curve fitting – to estimate break-profiles of MMP images. • Bezier curve –to joint break-profiles and to obtain an optimal profile of MMP. The objective of this paper is to propose a new method that can establish an optimal profile of a MMP image in order to improve manufacturing accuracy.

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Ekambavanan, Sasidharan. „Encoding serial data for energy-delay-product and energy minimization“. 2007. http://hdl.handle.net/1969.1/ETD-TAMU-1490.

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Serial or parallel buses are widely used to communicate information in most electronic devices. The energy consumed by bus interconnects may comprise a signiﬁcant portion of the overall energy consumption of the device. Hence, techniques to reduce the energy consumption of bus interconnects have become an important area of research. One common method adopted to reduce energy is Bus Encoding, where redundant bits are added to the original data stream either in time or space to reduce the energy consumption. In this thesis, a novel bus encoding technique, called the Multiple Codebook Approach (MCA), is presented to reduce the Energy-Delay-Product (EDP) and Energy for data transmission over serial buses. For any symbol that is to be transmitted on the bus, the best code is selected (from an EDP or energy minimization standpoint) from among a set of codebooks. In particular, the implementation utilizes 3 codebooks. To minimize EDP, the codeword for each symbol is selected based on the product of the number of transitions resulting from its transmission in a serial manner, and the codeword length. To minimize energy, the codeword for each symbol is selected based on the number of transitions alone. The MCA is compared with other reported techniques in the literature, and the results are quite promising. The MCA achieves a 11% improvement in EDP and 3% improvement iv in Energy over the best approach known for serial data transmission, which was reported by Macii and others.

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Antunes, Ana Luisa Abreu Soares. „Edp: getting re: dy for the future“. Master's thesis, 2017. http://hdl.handle.net/10362/23012.

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This Case Study describes the optimization process completed by the Portuguese utility firm EDP – Energias de Portugal in order to improve the performance of its most recent energy management solution: re:dy. Grounded on a product management perspective, this paper addresses the issues faced by re:dy at its early stage in the market, as well as product, place, promotion and price related solutions implemented to solve them. It also seeks to demonstrate the importance of strategical product development in companies’ ability to adapt to a fast changing and uncertain market environment.

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Fontinha, David Gomes. „Boosting EDP´s business by the means of digital transformation : the case of EDP re:dy“. Master's thesis, 2020. http://hdl.handle.net/10400.14/29697.

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With several new technologies and innovations at play, companies are forced to adapt their business models in order to keep up with competitors. The electric utility market is no different from others and so, companies are starting to create independent units inside the firm whose unique purpose is to assure that the advantages from newest technology are being properly exploited within the firm. This dissertation is based upon a project with EDP’s Digital Global Unit (DGU) and explores how can an electric utility company, boost its assets resorting to new technologies. It will be conferred a benchmark analysis on innovations adopted by businesses, inside and outside the electric utility sector, followed by a study of how an idea could/should be applied by EDP, as well as how it would impact the organisation. The innovation proposed consists on leveraging customers’ data gathered with the product EDP re:dy. Although this product already exists for over 4 years, its potential to the organization has never been fully exploited. Consequently, the idea entails viralizing the product, across customers as it allows the company to gather insight on their electric consumption with specific information by each home appliance. With this, EDP will be able to suggest replacements and offer tailored promotions from their newly launched online domestic appliances store - EDP Store, focused on improving customers electric efficiency. Furthermore, the study explores the stages necessary to implement the idea, as well as its impact on the firm’s current business model.
A evolução tecnológica e o aparecimento de novas inovações levam a que as empresas sejam cada vez mais obrigadas a adaptar os seus modelos de negócio de forma a acompanharem os seus concorrentes. O setor energético não difere dos demais. As companhias começaram a criar unidades independentes, com o propósito de assegurar o melhor aproveitamento das mais recentes tecnologias. Esta tese tem como base um projeto elaborado com o departamento DGU - Digital Global Unit da EDP e procura explorar de que forma uma empresa energética, como a EDP, pode potenciar ao máximo os seus ativos recorrendo ao uso de novas tecnologias. É realizada uma análise de benchmark das inovações adotadas por empresas, dentro e fora do setor energético, seguido de um estudo de como, entre algumas ideias, uma pode/deve ser aplicada pela EDP e como afetará a empresa. A inovação proposta consiste no aproveitamento dos dados de clientes adquiridos com o produto EDP re:dy. Embora esse produto já exista há mais de 4 anos, o seu potencial para a organização nunca foi totalmente explorado. Consequentemente, a proposta consistirá em “viralizar” o produto entre os clientes de modo a gerar conhecimento sobre o seu consumo elétrico por eletrodoméstico. Utilizando estes dados, a EDP poderá sugerir substituições de equipamentos e oferecer promoções personalizadas da sua recém-lançada loja online – EDP Store, melhorando a eficiência energética dos clientes. O estudo explora ainda as etapas necessárias para implementar a ideia, bem como o impacto quantitativo no atual modelo de negócios da empresa.

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Chaves, Marta da Costa. „The case of Edp re: dy - preparing for the future“. Master's thesis, 2017. http://hdl.handle.net/10362/22367.

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EDP is one of the biggest companies in Portugal and is recognized nationally and internationally for its energy solutions. The changes the market changes have been pressuring EDP to develop further its portfolio of services in a way that expands its spectrum of businesses and enriches its relationship with clients. In that context, edp re:dy has born. This service provides a “smart home enabler” solution with which clients can control and monetize their home energy and any equipment, at distance. With that, what EDP proposes to offer is a tool with which clients can be more efficient and gain control of their home. However, because this is a complete new product with an unfamiliar concept, it has been very difficult for consumers to understand it and to be interested. Also, the predicted arrival of highly technologic solutions from the Big Tech Companies, Apple and Google, are threatening the long-run evolution of edp re:dy. The product development team had to make a decision regarding the plan of actions for the future, which required a deep analysis of consumers’ needs regarding such service and the trends that are growing in the smart home market.

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Tavares, Bárbara Ruivo. „Development of a marketing plan for a new business model of EDP Comercial or how can EDP be uber and not the taxi driver?: brand identity and product“. Master's thesis, 2017. http://hdl.handle.net/10362/22919.

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Silva, Manuela Corrêa Alves. „Stress-strain response of soft soils stabilised with alkali activated industrial by-products“. Doctoral thesis, 2021. http://hdl.handle.net/1822/75516.

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Tese de doutoramento em Engenharia Civil
Alternative binders based on the alkaline activation technology have been strongly investigated over the last decades as a potential replacement for Portland Cement. However, little research has been devoted to the shear behaviour of soft soils stabilised with those type of binders and their numerical modelling using constitutive models. This PhD thesis aims to deepen the knowledge in this area through the characterisation of the short- and long-term shear behaviour of soft soils stabilised with alkali-activated binders and the numerical modelling of the stress-strain behaviour of these geomaterials using a advanced constitutive model. In this context, triaxial tests were undertaken, after 28 and 90 curing days, in both a sandy lean clay and clay with high water content at reconstituted and stabilised states using alkali-activated blast furnace slags. The impact of the stress-history, represented by the overconsolidation ratio, and stress-state, represented by the initial mean effective stress, were investigated. Oedometer and isotropic consolidation tests were also undertaken. Scanning electron microscopy with energy dispersive spectroscopy, x-ray powder diffraction and leachate analyses were carried out to investigate the nature of the binding phases formed and the risk of contamination of soils. The results were used to calibrate an advanced kinematic hardening constitutive model proposed by Rouainia and Muir Wood, 2000 for natural clays. It was the first attempt of using this constitutive model in artificially cemented soils. Additionally, the opportunity to be integrated within a research project related to the application of alkali-activated industrial wastes in situ allowed me to be deeply involved in constructing a full-scale prototype of a (sub)base layer stabilised with alkali-activated binders and conventional binders. Big challenges arose, including the definition of a construction methodology, equipment selection, on-site handling of distinct materials, quality control techniques, among others. The in situ performance of the stabilised geomaterials was assessed through falling weight deflectometer tests, plate load field tests and unconfined compressive strength tests after 36 and 90 days. For each layer, it was estimated the financial cost of the construction and the equivalent CO2 emissions. The work showed the feasibility of the on-site application of alkali-activated binders in the stabilisation of soil layers in the context of transport infrastructures.
Os ligantes alcalinos têm sido fortemente investigados nas últimas décadas como um potencial substituto do cimento Portland. Contudo, o comportamento ao corte de solos estabilizados com este tipo de ligantes é ainda uma área pouco explorada atualmente, juntamente com o uso de modelos constitutivos. A presente tese de doutoramento visa aprofundar o conhecimento existente nesta área, através da caracterização do comportamento ao corte de solos moles estabilizados com ligantes alcalinos a curto e longo prazo e a modelação numérica do comportamento tensão-extensão desses geomateriais utilizando um modelo constitutivo avançado. Nesse contexto, foram realizados ensaios triaxiais, ensaios edométricos e de consolidação isotrópica, numa argila magra arenosa e numa argila com alto teor em água, ambos no estado reconstituído e estabilizado com escórias de alto-forno ativadas por álcalis, aos 28 e 90 dias de cura. O impacto do grau de sobreconsolidação, representado pela razão de sobreconsolidação, e do estado de tensão in situ, representado pela tensão média efetiva inicial, foram investigados no comportamento ao corte desses geomateriais. Foram realizadas análises de microscopia eletrônica de varrimento com espectroscopia de energia dispersiva e difração de raios-X e testes de lixiviados para investigar a natureza dos géis formados e o risco de contaminação dos solos. Os resultados foram utilizados na calibração de um modelo constitutivo de endurecimento cinemático proposto por Rouainia and Muir Wood, 2000 para argilas naturais que, até ao momento, não tinha sido utilizado em solos artificialmente cimentados. Adicionalmente, a oportunidade de estar integrada num projeto de investigação relacionado com a construção à escala real de uma camada de (sub)base estabilizada com ligantes alcalinos e ligantes convencionais possibilitou-me enveredar por esta temática. Grandes desafios foram encontrados do longo deste projeto, entre os quais, a definição de uma metodologia de construção, a seleção de equipamentos, manuseio dos materiais in situ, definição dos ensaios de controle de qualidade, etc. O desempenho in situ dos geomateriais estabilizados foi avaliado através de ensaios de capacidade de carga com defletómetro de impacto, ensaios de carga em placa e de compressão uniaxial aos 36 e 90 dias. Para cada camada foram também estimados os custos financeiros de construção e as emissões de CO2 equivalentes. Este projeto mostrou a viabilidade de utilização local dos ligantes alcalinos para a estabilização de camadas de solo no contexto das infraestruturas de transporte.
Fundação para a Ciência e a Tecnologia (FCT)
This research work was co-financed by the European Social Fund (FSE) through the Northern Regional Operational Program

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Sobreiro, Rita Vaz Nunes de Jesus. „Swimming in a lake of sharks: EDP’s Electric mobility offer for the B2B segment product, place and physical evidence“. Master's thesis, 2018. http://hdl.handle.net/10362/38041.

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GONDEK, Petr. „Analýza výroby a logistiky ve vybraném podniku potravinářské výroby“. Master's thesis, 2007. http://www.nusl.cz/ntk/nusl-44168.

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The diploma work deals with the analysis of the logistic chain of the company Friall s.r.o., which is a producer of frozen potato specialities. Based on this analysis I wanted to discover weak points in functionality of the logistic chain and find suitable precautionary measures as well as solutions leading to an improvement of the current situation. The diploma work is focused on the raw material entry and self-production of the products.

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Bubová, Kristýna. „Biomarkery zánětlivého postižení subchondrální kosti při axiální spondyloartritidě“. Doctoral thesis, 2020. http://www.nusl.cz/ntk/nusl-437201.

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Background: Axial spondyloarthritis (axSpA) is a chronic inflammatory rheumatic disease affecting primarily the spine and its adjacent structures. The disease is characterized not only by destructive joint changes but also by excessive osteoproduction, which can lead to gradual ankylosis of the spine and thus significantly reduce the mobility and quality of life. The pathogenesis of the disease is not yet fully understood, but a strong genetic background is suggested, along with dysregulation of tissue metabolism resulting from an imbalance of pro- and anti-inflammatory immune mechanisms. We are still lacking biomarker with sufficient sensitivity and specificity which could help to identify early diagnosis, to monitor subchondral damage, and to differentiate rapidly progressing patients. The aim of this work was to determine the levels of potential biomarkers of connective tissue metabolism, fat metabolism and new promising biomarkers for both disease subtypes, their relationship to disease activity and progressive structural changes. Results: We have shown increased serum/plasma levels of connective tissue metabolism biomarkers (especially matrix metalloproteinase mediated metabolites), which were able to differentiate patients with early and late forms of axSpA from healthy individuals (HC), were...

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