Springtails (Collembola) are wingless arthropods that are impressively adapted to cutaneous respiration in temporarily rain-flooded habitats by non-wetting skin morphology. Recapitulating the robust and effectively liquid-repellent surface characteristics of springtail skin in engineered materials may offer exciting opportunities for demanding applications. Herein, we present a strategy for mimicking morphological surface features of springtail skin in polymer membranes produced by reverse imprint lithography. We report the fabrication of multi-level silicon masters that, in turn, serve as templates for the replication of flexible polymer membranes. We examined the robust wetting characteristics of polymer membranes by in situ plastron collapse tests and condensation tests. The mechanical stability of the polymer membranes was tested using a tribometer set-up and compared with needle-shaped pillar structures made from similar material. The fabricated membranes are flexible, free-standing, and adaptable to various substrate materials and shapes that allow for emerging applications.

This paper presents an investigation in stages of transformation between body and ornament to show upon their fluid relationship and their role for the creation of human identity. I see the act of adorning the body as an act of desire, in which we take part to become something more elevated than our original state of being. I use my background as a jeweller and the body as the territory for investigating these acts of transformation. Through material explorations I examine how we mirror ourselves in the things we make and how we reinvent our bodies through making. I compare the role of the maker with the scientist and discuss the increased interest in the body and its relation to a more and more virtual reality. I make links between ancient body modifications and human enhancement within new technology and throughout the paper I discuss my work in relation to other artists work and theorists relating to visual practices.

La lithographie de nano-impression par déstabilisation spontanée de polymère est unevariante de la technique de nano-impression thermique, et permet de limiter le contact directentre moule et polymère. Le but de cette thèse est d’étudier cette déstabilisation spontanée etde déterminer si elle peut conduire à la formation de nanostructures en dupliquant de façonpositive un moule nano-structuré. Ce procédé est influencé, en particulier, par la température,le champ électrique externe ou interne au niveau des interfaces moule – air – polymère, ainsique par la distance d séparant les structures du moule et la surface du polymère.Les études réalisées au cours de cette thèse se sont concentrées sur l’influence de cesdifférents paramètres. Nous avons montré que la formation de motifs dépend plus de l’effetde charges que de la température, dans la mesure où le polymère peut néanmoins fluer. Nousavons surtout mis en évidence le scénario de structuration suivant : une duplication positiveapparaît dans un premier temps, et est suivie, dans certains cas, d’un remplissage des cavitésdu moule conduisant à une duplication négative. Un modèle théorique a été utilisé pourcalculer la longueur d’onde de déstabilisation la plus favorable, et une comparaison avec nosrésultats expérimentaux a permis d’expliquer pourquoi et dans quels cas la structurationfinale est positive ou négative. Une investigation a été accomplie sur la déstabilisationspontanée de substrats souples, mais la grande épaisseur des films conduit à unedéstabilisation de grande longueur d’onde, et donc à un remplissage complet du moule. / NanoImprint lithography by spontaneous polymer destabilization is an alternative toThermal NanoImprint, which limits physical contact between polymer and mold surfaces.The purpose of this thesis is to investigate this spontaneous destabilization and to work out ifit can lead to the formation of nanostructures by duplicating positively a structured mold.This process is in particular affected by temperature or electric field present at mold - air -polymer interfaces and by the distance d between the structures of the mold and the polymersurface.The studies of this thesis were focused on the influence of these process parameters. Itwas shown that the structuration depends more of charges’ effect than temperature, since thepolymer can creep. We highlighted the following scenario of structuration: a positiveduplication appears first and is followed, in some cases, by the filling of the mold cavitiesleading to a negative duplication. A theoretical model was used to calculate the mostfavorable destabilization wavelength, and a comparison with experimental results helped toexplain why and under which circumstances the final structuration is positive or negative. Aninvestigation was performed on the spontaneous destabilization of flexible substrate but thebigger thickness of flexible films led to a destabilisation with a wide wavelength and so tothe filling of molds’ cavities.

Marknaden för biotech-relaterade produkter är komplex och har ökat explosionsartat de senaste åren. Bolag som verkar inom denna bransch är ofta kapitalintensiva och tungt beroende avforskning för att lyckas i det långa perspektivet. Utbudet av biotech-relaterade produkter möteren ständigt överväldigande efterfrågan. Utmaningen ligger således ofta inte i att hitta sin marknadsnisch, utan snarare ligger den oftast djupt rotad i produktutvecklingen och R&D. För finansiering och underlättande av ägarbyte söker sig dessa bolag ofta till kapitalmarknaden (börsen). Vidare spelar grundaren en viktig roll vid stora händelser inom bolag, såsom en IPO. Grundarna sänder då ut unika signaler utefter sitt agerande och även enbart genom sitt närvarande. Denna studie syftar till att undersöka eventuella samband mellan grundarens position och rösträtt (genom aktieinnehav) inom ett biotech-bolag och aktiekursens utvecklingefter en genomförd IPO. Studiens urval består av 119 SME biotech-bolag som är noterade 2010-2017 på den svenska aktiemarknaden. Denna studie förser mottagaren med en analys av hur grundare inom den svenska biotech-marknaden påverkar aktiekursen efter en genomförd IPO. Studien uppvisar ett signifikant och positivt samband mellan grundarens position som “övrig ledande befattningshavare” (e.g. CRO, CSO, COO) och aktiekursens utveckling efter en IPO. Detta samband är starkast första handelsdagen samt en vecka efter IPOn. Vi fann även ett negativt samband mellan storleken på grundares aktieinnehav och kursutveckling den första handelsdagen. Resultatet har strategiska implikationer för hur företag sänder ut signaler vid en annalkande IPO samt hur marknaden tolkar dessa. / The market of biotech related products is complex and have experienced a substantial development in the recent years. Companies operating in this industry are often capital intensiveand heavily dependent on research in order to succeed, in a long-term perspective. The amount of biotech-related products is constantly facing an overwhelming level of demand. Therefore, finding a market niche is not usually the primary challenge, but instead the challenge lies deeply rooted within product development and R&D. To facilitate company financing and shifts in ownership, these companies are often drawn towards the capital market (the stock exchange). Furthermore, the founder plays a considerable role at major events within a company, such as IPOs. On such occasions, founders emit unique signals through their actions and mere presence. This study aims to explain the connection between founder position and voting rights (through shareholding) within a biotech-company, and the stock performance after an IPO. The sample consists of 119 SME biotech-companies, listed on the Swedish stock exchange between 2010-2017. The study provides the receiver with an analysis of how founders within the Swedish biotech-industry affects the stock performance after an IPO. The study shows a significant andpositive connection between founders with an “other governing position” (e.g. CRO, CSO,COO) and stock performance after an IPO. The connection is strongest by the first day of trading and after one week. We also found a negative connection between founder shareholding and the stock performance on the first day of trading. The result has strategic implications onhow companies send out signals during an IPO and how these signals are interpreted by the market.

This diploma thesis deals with the ability to determine impact speed of vehicles in traffic accidents. Thesis tries to find out whether jammed needle of speedometer and tachometer, as well as needle's imprint, could provide relevant informations for traffic accident analysis. The outcome is formulation, whether these informations are trustworthy, or under which circumstances are valid.

This dissertation thesis deals with determination of the mechanical properties of weld materials based on instrumented hardness test. This work was caused by the research project between IAM Brno Ltd and CEZ corp., when the task was to develop a methodology for evaluation of mechanical material properties using NDT methods. For these reasons the development of methodology is reflected especially for use in practice focusing to determining the mechanical properties of the heterogeneous weld joint on the assembled equipment. The mechanical material properties are determined by carrying out non-destructive tests of the instrumented Vickers hardness. The developed methodology for determining of basic mechanical properties is based on the principle of inverse FEM modeling of the instrumented hardness tests, when output of the testing is indentation curve and measured surface imprint after unloading. The basic material mechanical properties are achieved by comparing the outputs of the experimental instrumented hardness tests and the outputs of the modeled hardness test using FEM.

Springtails (Collembola) are wingless arthropods that are impressively adapted to cutaneous respiration in temporarily rain-flooded habitats by non-wetting skin morphology. Recapitulating the robust and effectively liquid-repellent surface characteristics of springtail skin in engineered materials may offer exciting opportunities for demanding applications. Herein, we present a strategy for mimicking morphological surface features of springtail skin in polymer membranes produced by reverse imprint lithography. We report the fabrication of multi-level silicon masters that, in turn, serve as templates for the replication of flexible polymer membranes. We examined the robust wetting characteristics of polymer membranes by in situ plastron collapse tests and condensation tests. The mechanical stability of the polymer membranes was tested using a tribometer set-up and compared with needle-shaped pillar structures made from similar material. The fabricated membranes are flexible, free-standing, and adaptable to various substrate materials and shapes that allow for emerging applications.

No description available.

Au croisement de l’anthropologie médicale, de la communication, du design industriel et des nouvelles technologies de l’information, ce mémoire se penche sur les difficultés communicatives rencontrées par le personnel médical et les patients de provenances culturelles variées dans le milieu des urgences hospitalières à Montréal. Dans l’optique d’améliorer l’échange au poste de triage, la réflexion porte principalement sur la pertinence et les caractéristiques d’un support visuel d’appoint. Elle aborde la problématique par l’étude des concepts de perception, de compréhension, d’interprétation et de représentation graphique sous les angles théoriques de la communication visuelle (Benjamin, Berger, Dibi-Huberman), de la sémiologie du discours social (Verón) et du jeu herméneutique (Gadamer). Les systèmes symboliques de cent cinquante images, illustrant sur Internet trois symptômes propres à la gastro-entérite, ont été analysés d’après une méthodologie mixte quantitative et qualitative afin d’identifier leurs sens dénotatifs et connotatifs. Les résultats appuient le recours à des images pour contourner les barrières langagières et révèlent l’existence d’une culture médicale visuelle internationale dont le code iconographique est hybride et pluriculturel. Ces nouvelles informations indiquent des critères de performance et des hypothèses concernant les changements occasionnés par l’ajout d’un support visuel dans la dynamique communicationnelle de l’ETC. La recherche ouvre aussi une piste vers l’étude herméneutique du produit en design industriel. / At the crossroads of anthropology, communicational and technology approach, this dissertation aims to provide a vision of the emergency room where cultural differences between the medical staff and the patients confront themselves creating communicational difficulties. To overcome the linguistic barriers, a visual support is considered as an alternative solution. In this way, the problematic is seen through the concepts of perception, comprehension, interpretation and graphic representation witch are examined by the visual culture, semiotic and hermeneutic theories. The symbolic systems of 150 images illustrating three gastro-enteritis symptoms have been analyzed following a quantitative and qualitative methodology in order to reveal their denotative and connotative significations. The results showed the existence of a new visual culture that presents a hybrid and pluricultural iconographic code. Based on these findings, new hypothesis concerning the impact of a visual support on the communicational dynamic could be proposed.

No description available.