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Die Vision dieses Projektes ist es, einen durchgängigen Prozess zu entwickeln, der es erlaubt, den Entwurf, die Berechnung und die Fugenoptimierung von flächigen Strukturen aus Betonfertigteilen sehr einfach und effizient durchzuführen. Damit soll die Herstellung von freien Formen, wie beispielsweise „Blobs“ und Hängeformen aus Beton, unterstützt und gefördert werden. / The vision of this project is to develop a continuous process that allows very easy and efficient design, calculation and joint optimization of surface-like structures made of precast concrete elements. This should support and encourage the production of free forms, such as “blobs” and hanging forms made of concrete.

In recent decades, the necessity to find a completely environmentally friendly substitute for synthetic fibres in composite applications has intensified, driven by the objective of reducing emissions in both the production and disposal of composite components. Natural fibres present a potential solution, yet they have some issues such as the inhomogeneous quality of their cross-section and mechanical properties, depending on different aspects, for example, growing conditions and the amount of intake water. Another potential solution is organic man-made fibres, such as fibre made from Cellulose NanoFibrils, which do not present the previously cited drawbacks.This thesis investigates and compares the potentials of organic fibres, either man-made or natural, in composite reinforcement applications. To accomplish this, organic fibres are integrated into composite plates using two distinct thermoset matrices, epoxy and vinyl ester, respectively via methods of hot pressing and vacuum infusion. Subsequently, the produced composite plates undergo tensile testing, with the results being compared with the theoretical values. Furthermore, microscopy is employed to examine the adhesion at the interface between reinforcement and matrix.The findings indicate that man-made fibres from Cellulose NanoFibrils bind more efficiently with thermoset matrices compared to flax fibres, making them more adept as reinforcement materials for thermoset composites. / Under de senaste decennierna har behovet av att hitta en helt miljövänlig ersättning för syntetiska fibrer i kompositapplikationer intensifierats, drivet av målet att minska utsläppen både vid produktion och avfallshantering av kompositkomponenter. Naturliga fibrer presenterar en potentiell lösning, men de har vissa problem som den ojämna kvaliteten på deras tvärsnitt och mekaniska egenskaper, beroende på olika aspekter, till exempel växtförhållanden och mängden intaget vatten. En annan potentiell lösning är organiska konstgjorda fibrer, som fibrer tillverkade av cellulosa nanofibriller, som inte har de tidigare nämnda nackdelarna.Denna avhandling undersöker och jämför potentialen hos organiska fibrer, antingen konstgjorda eller naturliga, i kompositförstärkningsapplikationer. För att uppnå detta integreras organiska fibrer i kompositplattor med hjälp av två olika termohärdande matriser, epoxi och vinyl-ester, via metoder för varmpressning och vakuuminfusion. Därefter genomgår de producerade kompositplattorna dragprovning, med resultaten jämförda med de teoretiska värdena. Dessutom används mikroskopi för att undersöka vidhäftningen vid gränssnittet mellan förstärkning och matris.Resultaten indikerar att konstgjorda fibrer från cellulosa nanofibriller binder effektivare med termohärdande matriser jämfört med linfibrer, vilket gör dem mer lämpliga som förstärkningsmaterial för termohärdande kompositer.

Phishing is a form of social engineering, in which attackers attempt to trick victims with e-mails designed to look like legitimate requests (Vishwanath et al., 2011), aiming “to exploit human error or human behaviour with the objective of gaining access to information or services” (European Union Agency for Cybersecurity [ENISA], 2023, p. 7). According to the ENISA Threat Landscape 2023 report, phishing is the most prevalent form of social engineering and predicted to continue posing a significant threat to users (ENISA, 2023). In this, attackers have also already succeeded in circumventing second-factor authentication (2FA) (ENISA, 2023). This thesis aimed to contribute to the ongoing research concerning the mitigation of social engineering attacks by investigating phishing susceptibility and a UX-based mitigation approach in the context of 2FA, which to the best of our knowledge had not been previously researched. Based on prior research in other contexts, stress, attention, elaboration, involvement and 2FA frequency were identified as potentially relevant factors. Under consideration of these factors, a 2FA implementation was designed, combining automated URL verification with verification-basedwarnings. An online study (N = 94) was conducted to investigate how the posited susceptibility factors as well as the UX design can influence users’ decisions to abort or proceed with logging in to a suspicious website. In this, a between-subject study design was used to investigate howmuch of an impact specifically the “opinionatedness” of a warning design, i.e. its “use of visual design cues to promote a recommended course of action” (Felt et al., 2015, p. 2893), can have in the 2FA context compared to an otherwise identical design offering a neutral choice. In the collected sample, involvement had a significant negative effect on the likelihood to proceed with the login, in accordance with its posited influence. In addition, confidence in the decision made was discovered as another potential predictor, also showing a significant negativeeffect on the likelihood to proceed in the collected sample. The observed effect of the opinionated design can be seen to contradict the posited assumption that users would be more likely to go with the promoted action. However, overall, the results can be seen to suggest thattaking susceptibility factors into consideration when designing 2FA implementations might be a promising approach towards phishing mitigation. Further research is needed to validate these indications, due to the insufficient sample size and use of convenience sampling in this thesis.

Made available in DSpace on 2016-04-27T16:58:08Z (GMT). No. of bitstreams: 1 dissertacao_gustavo_miranda.pdf: 594697 bytes, checksum: 12a44cd827b057543633c4cda536191f (MD5) Previous issue date: 2004-12-03 / With the purpose of studying the calculus teaching history and, particularly, the consequences of Calculus Made Easy (1910) in the mathematics education context, this work intends to make an historical analysis to clarify the connections between Silvanus Phillips Thompson (its author) and the education in the early twentieth century, mainly mathematics education. Thompson was concerned about Physics and Radiology, however, at the dawn of the new century, his interests in technical education had also burgeoned. One of his goals was to demystify Calculus, tackling the subject intuitively Calculus Made Easy. The book did not draw much respect from mathematicians and was acridly criticized / Com o intuito de estudar a história do ensino de Cálculo e, mais especificamente, os desdobramentos do livro Calculus Made Easy (1910) no contexto da educação matemática, este trabalho procura fazer uma análise histórica que elucide as relações entre Silvanus Phillips Thompson (autor do livro) e a educação do início do século XX, particularmente a educação matemática. Thompson legou muito às áreas da física e da radiologia, porém, com a chegada do novo século, passou a se dedicar intensamente à educação técnica de seus compatriotas ingleses. Tal dedicação, aliada a preocupações políticas e sociais da época, foi crucial para a publicação do seu texto didático mais polêmico: o Calculus Made Easy (1910). A polêmica estava atrelada às discussões sobre o rigor e a intuição no ensino de matemática, visto que o didático tratava dos conceitos fundamentais do Cálculo de maneira intuitiva e com aplicações. Apesar das críticas e do repúdio dos matemáticos da época, Thompson granjeou a admiração e o respeito de muitos alunos de Cálculo durante o século XX. Tornou-se, assim, parte da história do ensino de Cálculo

<p>. This thesis consists of an introduction and four previously published articles. The joint empirical focus is papermaking based on textile rags as fibre raw material. Furthermore the physical environment is central in the studies. The relationship between continuity and change is a prevailing theme. The thesis also pays attention to the use of different sorts of rags and to the connection between this kind of papermaking and the textile industry.</p><p>The overall purpose is to throw new light upon the paper industry based on rags – a part of early industry seldom mentioned in historical surveys of the industrialization process in Sweden. The aim is also to question the prevalent Swedish historical writing commissioned by the branch, characterized by set divisions between different phases of technical and industrial development, from simple craft to modern industry. One of these borderlines has been drawn between papermaking by hand and papermaking by machine, with the 1830s as the selected transition period. By studying and analysing changes in the traditional and seemingly static papermaking as well as the opposite: the traditional that has lingered in the new, this thesis shows that the course of events was much more complicated than that. An outcome of the studies is that the industrialization of the rag based paper industry has been a complex, uneven and prolonged process.</p><p>The first main part of the thesis consists of two Swedish regional studies centred on the province of Östergötland in a long-time perspective. The focus is mainly on the long continuity of papermaking by hand, which was carried out between 1628 and 1968. The study shows that a variety of types and sizes of mills regarding ownership, forms of production, location, paper qualities and techniques can be identified. Continuity was the dominating feature but within this framework technological and industrial change also took place.</p><p>The second main part of the thesis has a Nordic perspective and deals with a shorter period, mainly 1830-1870. One study examines the introduction of the paper-machine and the establishment of the first machine-made paper mills in Denmark, Sweden, Norway and Finland with special attention given to the Swedish mill Holmen in Norrköping and the Finnish Tammerfors mill, both situated in textile mill towns. A second Nordic study surveys hand-made paper mills founded during and after the time when the paper-machine technology had been established. As the studies show, two parallel development tracks were prevalent in the paper industry in the Nordic countries during the period 1830-1870 – papermaking by machine and papermaking by hand.</p><p>The first paper machines were imported from Britain to some of the oldest and largest paper mills. The introduction of the new technology led to changes in for instance the paper mill buildings and the organization of work regarding the papermaking process. In the preparatory and finishing work manual methods remained, and as before it employed mostly women.</p><p>At the same time, papermaking by hand continued to change and new hand-made paper mills were founded until as late as the 1890s. The study discusses possible explanations, among them growing markets for special qualities and combinations with other branches of industry.</p><p>All the studies show a connection between hand-made paper mills and wool mills on one hand, and machine-made paper mills and cotton and linen mills on the other hand. The paper industry based on rags could in fact be characterized as a kind of textile industry</p>

Då tillverkningsindustrin går mot en högre grad av kundanpassning och implementering av Lean, samtidigt som föråldrade traditionella kalkyleringsmetoder fortfarande används i moderna industriföretag, är det intressant att utreda relationerna mellan produktionsflöden av kundanpassad karaktär, Lean samt olika kalkyleringsmetoder. Syftet är att öka kostnadsprecisionen i förkalkylen för ett produktionsflöde av kundanpassad och Lean karaktär och beskriva en generaliserbar arbetsprocess för detta. Syftet är även att ta fram generella rekommendationer för val av kalkyleringsmetod genom att utifrån denna produktions karaktär genomföra en jämförande analys av kalkyleringsmetoder (traditionella kalkylmetoder, ABC och kalkylering enligt Lean). Genom en litteraturstudie samt en fallstudie av ett produktionsflöde med många varianter och inslag av Lean har båda syftena uppfyllts. Fallstudien har utförts genom intervjuer och observationer. Problem och positiva faktorer som enligt litteratur karaktäriserar produktion av kundanpassade produkter har även återfunnits på fallföretaget. Det sambandet har kunnat användas för att stödja analysen av relationerna. Relationerna mellan kalkyleringsmetoder, Lean samt produktionsflöden av kundanpassad karaktär har analyserats genom att jämföra litteratur och resultat från fallstudien. Det framkom att Value Stream Costing (VSC) är den mest lämpliga kalkyleringsmetoden för produktionsflöden med kundanpassade produkter som uppnått en hög mognadsgrad av Lean. Förkalkyleringen på fallföretaget är beroende av tillförlitliga operationstider, vilket tagits fram på fallföretaget samtidigt som en generell arbetsprocess utarbetats. Operationstiderna togs i detta fall fram genom videoupptagning av produktionsmomenten samt efterföljande analys i mjukvaran AviX. Genom att följa den generella arbetsprocessen som utarbetats erhålls både ett bra underlag till förkalkylering samt ständiga förbättringar i produktionsflödet. Eftersom forskning visar att Lean bör implementeras i hela organisationen om full fördel med Lean ska uppnås, kan VSC vara en utmärkt kalkyleringsmetod för att komma ifrån föråldrade, traditionella kalkyleringsmetoder samtidigt som denna kalkyleringsmetod förenklar kalkylering i produktion av kundanpassad karaktär. / Since the manufacturing industry is heading for a higher level of customization and implementation of Lean, at the same time as outmoded traditional costing methods is still used in modern industrial organizations, it is interesting to explore the relations between production flows of customized character, Lean and different costing methods. The purpose of this thesis is to increase the cost precision in the preliminary calculation for a product flow of customer adapted and Lean character, and to describe a generalizable work process for this. The purpose is also to develop general recommendations regarding the choice of costing methods by, on a basis of the character of this production, a comparative analysis of costing methods (traditional costing methods, ABC and Lean accounting/VSC). Through a literature study and a case study of a production flow with a high level of variety and influence from Lean, both of the purposes has been fulfilled. The case study has been accomplished through interviews and observations. Problems and positive elements that according to literature characterize the production of customized products have also been found in the case company. That connection has been used to support the analysis of the relations. The relations between costing methods, Lean and production flows of customized character has been analyzed through a comparison between findings in literature and results from the case study. It has been found that Value Stream Costing (VSC) is the most appropriate costing method for production flows of customized products that has reached a high maturity level of Lean. The preliminary costing is dependent on reliable operation times which have been produced on the case study company, while a general work process has been developed. The operation times were in this case identified through video recordings of the production moments and a following analysis in the software AviX. By following the general work process that has been developed, useful material for preliminary costing and continuous improvements in the production flow will be obtained. Since research is showing that Lean should be implemented in the whole organization if full advantages of Lean shall be obtained, VSC is found to be an ideal costing method to replace outmoded, traditional costing methods at the same time as this costing method simplifies costing in production flows of customized character.

This essay is more or less a very boring analog game in paper, which is trying to find the similitude between ART and CONSCIOUSNESS, as well as the boundaries of legality of taking over or stealing someone else's work. The dynamic of this game of mine starts by choosing a lecture of any research and change some keywords to create a new research. The format of this essay suggests an interaction and will need an interaction of the reader with the essay itself in order to add more concepts and could make it more personal and transform the main subject of this essay. It does not necessarily have to be an art topic, so it is very open to any personal interest. There are no rules of this game, you can change the subject, the actors, the author or try to change it back to the original lecture. Everything is possible; at the end the reader could acquire by signing this essay or theory. / [I examensarbetet ingår utställningen "YSO":] YSO explore metaphysical information in order to expand the idea of Art and consciousness, which experience and perception are both essential as a part of the information processing. Condensing this information to be able to exchange it on different states the Meta, Virtual and physical state. The formal aesthetic display of YSO is an interpretation of the different inputs objects or data that will or could construct an assumption with deliberate inputs through the senses to be able to interpret the correlation between Art and Consciousness. Material: Freezer, pick-up car, silicon form, water, wood, plastic sheet, tv, ice machine, media player and paint. Teknik: Installation/video/variable. Längd på video: 01:54:00. / <p>The video, essay and installation is a unit and represent different states of consciousness and non-physical matter's reality (nonphysical-matter Reality) and all of these contribute to the information.</p><p>Examensarbetet består av en skriftlig del och en gestaltande del. Alternativ titel anger namnet förden gestaltande delen. </p><p>The master work includes a written essay and a forming part. The alternative title is the name of the forming part.</p>