Polysiloxanes represent a unique class of synthetic polymers, employing a completely inorganic backbone structure comprised of repeating –(Si–O)n– 'siloxane' main chain linkages. This results in an assortment of diverse properties exclusive to the siloxane bond that clearly distinguish them from the –(C–C)n– backbone of purely organic polymers. Previous work has elucidated a methodology for fabricating flexible and elastic crosslinked poly(dimethyl siloxane) (PDMS) constructs with high Mc through a simultaneous crosslinking and chain-extension methodology. However, these constructs suffer the poor mechanical properties typical of lower molecular weight crosslinked siloxanes (e.g. modulus, tear strength, and strain at break). Filled PDMS networks represent another important class of elastomers in which fillers, namely silica and siloxane-based fillers, impart improved mechanical properties to otherwise weak PDMS networks. This work demonstrates that proper silicon-based reinforcing agent selection (e.g. siloxane-based MQ copolymer nanoparticles) and incorporation provides a synergistic enhancement to mechanical properties, whilst maintaining a low viscosity liquid composition, at high loading content, without the use of co-solvents or heating. Rheological analysis evaluates the viscosity while photorheology and photocalorimetry measurements evaluate rate and extent of curing of the various MQ-loaded formulations, demonstrating theoretical printability up to 40 wt% MQ copolymer nanoparticle incorporation. Dynamic mechanical analysis (DMA) and tensile testing evaluated thermomechanical and mechanical properties of the cured nanocomposites as a function of MQ loading content, demonstrating a 3-fold increase in ultimate stress at 50 wt% MQ copolymer nanoparticle incorporation. VP AM of the 40 wt% MQ-loaded, photo-active PDMS formulation demonstrates facile amenability of photo-active PDMS formulations with high MQ-loading content to 3D printing processes with promising results. PDMS polyureas represent an important class of elastomers with unique properties derived from the synergy between the nonpolar nature, unusual flexibility, and low glass transition temperature (Tg) afforded by the backbone siloxane linkages (-Si-O)n- of PDMS and the exceptional hydrogen bond ordering and strength evoked by the bidentate hydrogen bonding of urea. The work herein presents an improved melt polycondensation synthetic methodology, which strategically harnesses the spontaneous pyrolytic degradation of urea to afford a series of PDMS polyureas via reactions at high temperatures in the presence of telechelic amine-terminated oligomeric poly(dimethyl siloxane) (PDMS1.6k-NH2) and optional 1,3-bis(3-aminopropyl)tetramethyldisiloxane (BATS) chain extender. This melt polycondensation approach uniquely circumvents the accustomed prerequisite of isocyanate monomer, solvent, and metal catalysts to afford isocyanate-free PDMS polyureas using bio-derived urea with the only reaction byproduct being ammonia, a fundamental raw ingredient for agricultural and industrial products. As professed above, reinforcement of polysiloxane materials is ascertained via the incorporation of reinforcing fillers or nanoparticles (typically fumed silica) or blocky or segmented development of polymer chains eliciting microphase separation, in order to cajole the elongation potential of polysiloxanes. Herein, a facile approach is detailed towards the synergistic fortification of PDMS-based materials through a collaborative effort between both primary methods of polysiloxane reinforcement. A novel one-pot methodology towards the facile, in situ incorporation of siloxane-based MQ copolymer nanoparticles into segmented PDMS polyureas to afford MQ-loaded thermoplastic and thermoplastic elastomer PDMS polyureas is detailed. The isocyanate-free melt polycondensation achieves visible melt dispersibility of MQ copolymer nanoparticles (good optical clarity) and affords segmented PDMS polyureas while in the presence of MQ nanoparticles, up to 40 wt% MQ, avoiding post-polymerization solvent based mixing, the only other reported alternative. Incorporation of MQ copolymer nanoparticles into segmented PDMS polyureas provides significant enhancements to modulus and ultimate stress properties: results resemble traditional filler effects and are contrary to previous studies and works discussed in Chapter 2 implementing MQ copolymer nanoparticles into chemically-crosslinked PDMS networks. In situ MQ-loaded, isocyanate-free, segmented PDMS polyureas remain compression moldable, affording transparent, free-standing films. / Master of Science / Polysiloxanes, also referred to as 'silicones' encompass a unique and important class of polymers harboring an inorganic backbone. Polysiloxanes, especially poly(dimethyl siloxane) (PDMS) the flagship polymer of the family, observe widespread utilization throughout industry and academia thanks to a plethora of desirable properties such as their incredible elongation potential, stability to irradiation, and facile chemical tunability. A major complication with the utilization of polysiloxanes for mechanical purposes is their poor resistance to defect propagation and material failure. As a result polysiloxane materials ubiquitously observe reinforcement in some fashion: reinforcement is achieved either through the physical or chemical incorporation of a reinforcing agent, such as fumed silica, or through the implementation of a chemical functionality that facilitates reinforcement via phase separation and strong associative properties, such as hydrogen bonding. This research tackles polysiloxane reinforcement via both of these strategies. Facile chemical modification permits the construction PDMS polymer chains that incorporate hydrogen bonding motifs, which phase separate to afford hydrogen bond-reinforced phases that instill vast improvements to elastic behavior, mechanical and elongation properties, and upper-use temperature. Novel nanocomposite formulation through the incorporation of MQ nanoparticles (which observe widespread usage in cosmetics) facilitate further routes toward improved mechanical and elongation properties. Furthermore, with growing interest in additive manufacturing strategies, which permit the construction of complex geometries via an additive approach (as opposed to conventional manufacturing processes, which require subtractive approaches and are limited in geometric complexity), great interest lies in the capability to additively manufacture polysiloxane-based materials. This work also illustrates the development of an MQ-reinforced polysiloxane system that is amenable to conventional vat photopolymerization additive manufacturing: chemical modification of PDMS polymer chains permits the installation of UV-activatable crosslinking motifs, allowing solid geometries to be constructed from a liquid precursor formulation.

This thesis deals with messaging and integration of third-party JMS providers into JBoss application server. The aim of the thesis was to design and implement a general-purpose testsuite to verify the proposed integration. First requirement was to get familiar with key technologies for integration including Java Message Service, Java EE Connector Architecture, selected JMS providers and JBoss AS. Specific procedures of integration were designed and described for JMS providers Apache ActiveMQ, IBM WebSphere MQ and Red Hat MRG Messaging. The testsuite implemented to verify the functionlity of the integration focuses on four areas - transactions, clustering, high availibility and performance. The process of testing was automated using continuous integration tool Jenkins. Finally the test application was used to evaluate functionality of the integration and compare different JMS providers and various versions of JBoss AS.

Émile Durkheims "Formes élémentaires de la vie religieuse" (1912) zählen zu den "Klassikern" der Religionssoziologie und Durkheim selbst unbestritten zu den "Gründungsvätern" der Disziplin. In der umfangreichen Sekundärliteratur zu Durkheim und seinem "Meisterwerk" hat die kritische Rezeption des Werks bislang jedoch nur wenig Betrachtung gefunden. Die vorliegende Arbeit präsentiert einen systematischen Überblick der theologischen Rezeption des Werks zwischen 1912 bis 1930 im französischsprachigen Kontext. Insofern Durkheims Studie bewusst als wissenschaftlicher Schlag gegen traditionelle Religionsverständnisse gedacht war und einen gezielten Beitrag zu den aufgeheizten Diskussionen über neue Ansätze der Religionsforschung darstellte, bilden die kritischen Auseinandersetzungen der Theologen die Dispute über die Deutungshoheiten innerhalb der Religionsforschung zum Entstehungskontext des Werks verdichtet ab. Mit der Aufarbeitung der kritischen Rezeption vor dem Hintergrund zeitgenössischer Debatten innerhalb des französischen Wissenschaftskontextes und der (katholischen) Theologie wird der "soziologische Klassiker" in seine intellektuellen Entstehungskontexte zurückgeführt. Dieser Blick auf das Werk als historischer Debattenbeitrag erlaubt, gegenwärtige "Gründungsnarrative" sowie soziologiegeschichtliche Kanonbildung kritisch zu hinterfragen. Dabei wird erkennbar, dass der komplexe Gründungsprozess der Soziologie in Frankreich nicht allein auf die herausragenden Arbeiten eines Einzelnen zurückgeführt werden kann, sondern der kollaborative Charakter des Gründens stärker herausgestellt werden muss. Daneben sind auch die notwendigen institutionellen und intellektuellen Bedingungen für die erfolgreiche "Gründung" der Religionssoziologie zu Beginn des 20. Jahrhunderts anzuerkennen. / Émile Durkheim’s 'Formes élémentaires de la vie religieuse' (1912) counts as one of the 'classics' of sociology of religion, while Durkheim himself is undisputedly considered one of the 'founding fathers' of the discipline. Despite extensive secondary literature on Durkheim and his 'masterpiece', the critical reception of his work has received comparatively little attention. This dissertation presents a systematic overview of the theological reception of the work between 1912 and 1930 in the Frenchspeaking context. Durkheim’s study was intended as an attack against traditional understandings of religion and also contributed to heated discussions about new approaches to the study of religion. Therefore, the critical reception from theologians during the publishing context provides important insight into disputes about sovereignties within the study of religion. By reappraising the reception against the backdrop of historical debates within the French scientific community and (Catholic) theology, the 'sociological classic' is returned to its original intellectual context. Considering the book as a historical contribution to debates allows us to critically question contemporary 'founding narratives', as well as canon formation within the sociology of religion. In doing so, it becomes apparent that the complex founding process of sociology in France cannot be attributed solely to the outstanding work of one individual, instead one must emphasise the collaborative nature of founding. In addition, the necessary institutional and intellectual conditions for the successful 'founding' of the sociology of religion at the beginning of the 20th century must also be acknowledged.

The high temperature adsorption of oxygen and the room temperature adsorption of CO on the Pt3Sn(111) and Pt3Sn(110) surfaces have been investigated by scanning tunneling microscopy (STM), low-energy electron diffraction (LEED), and Auger electron spectroscopy (AES). Beforehand the structure of the clean surfaces has been reviewed. After exposure to several 1000 L O2 at sample temperatures of about 750 K on both Pt3Sn(111) and (110) an ultra-thin Sn-O surface layer is formed. For the (111) X-ray photoelectron spectroscopy (XPS) indicates that this layer does not yet exhibit oxide properties. STM topographs of the Sn-O phase show on both surfaces meshes of highly corrugated protrusions commensurate with the substrate. In the case of the (111), after additional thermal annealing with STM and LEED a (4 × 4) reconstruction is observed, that is due to a (2 × 2) supermesh of depressions in the p(2 × 2) mesh of protrusions. This structure is similar to findings reported for the oxidation of Sn/Pt(111) surface alloys. X-ray photoelectron diffraction (XPD) measurements in comparison with simulations yield a tentative model for the (111) Sn-O layer. On the Pt3Sn(110) surface after oxygen exposure a c(2 × 2) hexagonal grid of protrusions with regard to the (2 × 1) substrate is observed with STM and LEED. STM reveals the existence of domains due to two equivalent positions of the Sn-O layer relative to the substrate. The domain boundaries zigzag around the [1-10] direction. The Sn-O layer can on both surfaces be removed by thermal annealing to more than 1050 K. After CO adsorption at room temperature on both Pt3Sn(111) and (110) adsorbate structures are observable with the STM. On the (111) two different types of structures are found: ordered patches of protrusions and unordered clusters. These structures are seen only on (√3 × √3)R30° substrate regions, not on p(2 × 2) regions. Surprisingly on the (110) the CO molecules mostly arrange in dimers. For both (111) and (110) saturation coverage is already reached at about 30% of a closed monolayer. The CO can be desorbed by slightly heating the samples to about 400 K. STM topographs show that on both surfaces CO adsorbes in Pt sites, not on Sn. It was possible to observe the CO adsorption on the (110) directly live with the STM. The observed adsorption processes hint to a dimer formation mechanism where a preadsorbed monomer and a CO molecule form the gas phase or a precursor phase stick together. When on partially Sn-O phase covered Pt3Sn(111) and (110) surfaces CO is adsorbed at room temperature, the respective structures coexist. Neither is CO observed on the Sn-O phase nor does a reaction between CO and O occur.

Die historischen Avantgardebewegungen haben mit dem Angriff auf die Autonomie der Kunst ein Erdbeben erzeugt, das sowohl die zeitgenössische Kunstpraxis als auch die ästhetische Theorie nachhaltig bewegt. Das Vermächtnis der historischen Avantgarden bleibt insofern als the Living Dead bestehen, als die Forderung, politisch wirksame Kunst zu schaffen, seit dem Beginn des 20. Jahrhunderts immer wieder begraben und wiederbelebt wird. Auf der Ebene der Theorie pendeln diese Debatten zwischen der Konzeption einer autonomen Kunst einerseits und einer heteronomen Kunst andererseits, wobei Erstere einer philosophischen und Letztere einer soziologischen Kontextualisierung von Kunst entspricht. Die vorliegende Arbeit stellt diese beiden Perspektiven – einmal die ästhetische Theorie von Jacques Rancière und einmal die Gesellschaftstheorie von Niklas Luhmann – nebeneinander und zeigt, wie ein künstlerisches Schaffen – hier Marko Peljhans Projekt Makrolab – zugleich politisch wirksam und politisch unwirksam sein kann. Mit diesem Schritt wird die Diskussion über politische Kunst auf die Diskussion über die Wirksamkeit verschoben. Es wird festgestellt, dass die Frage nach politisch wirksamer Kunst nur im Rahmen einer kulturhistorisch spezifischen Vorstellung von Wirksamkeit möglich ist. Wird diese Vorstellung von Wirksamkeit durch eine andere ersetzt, verliert die Frage nach politischer Kunst ihren Sinn, es erschließt sich jedoch ein neues Verständnis des gesellschaftlichen Wandels, das weit über die Themen der Kunst hinausgeht. / By attacking the autonomy of the arts, the historical avant-gardes caused an upheaval which has resonated in the contemporary artistic practices as well as in art theory to this day. The legacy of the historical avant-gardes remains in the state of the living dead, since the demands to make political art have since the beginning of the 20th century repeatedly been buried and resuscitated. On the level of theory, these debates have been oscillating between the concept of an autonomous sphere of art on the one side and the heteronomous sphere of art on the other, whereas the former corresponds to a philosophical and the latter to a sociological contextualisation of the arts. This text combines both of these perspectives, putting Jacques Rancière’s philosophy of art and Niklas Luhmann’s social theory side by side in order to show how a singular artwork – here Marko Peljhan’s project Makrolab – can be understood as politically efficient and not politically efficient at the same time. With this step the discussion about political art is shifted to a discussion about efficacy and brought to the conclusion that the question of political art is only possible within a frame of a culturally and historically specific conception of efficacy. When this specific conception of efficacy is replaced by another, the question about political art loses its meaning. However, it is exactly at this point that a new understanding of social change opens up, which reaches far beyond the domain of art theory.