@phdthesis{Hollberg,
  author    = {Hollberg, Alexander},
  title     = {A parametric method for building design optimization based on Life Cycle Assessment},
  doi       = {10.25643/bauhaus-universitaet.3800},
  url       = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20180928-38000},
  school      = {Bauhaus-Universit{\"a}t Weimar},
  pages     = {262},
  abstract  = {The building sector is responsible for a large share of human environmental impacts. Architects and planners are the key players for reducing the environmental impacts of buildings, as they define them to a large extent. Life Cycle Assessment (LCA) allows for the holistic environmental analysis of a building. However, it is currently not employed to improve the environmental performance of buildings during the design process, although the potential for optimization is greatest there. One main reason is the lack of an adequate means of applying LCA in the architectural design process. As such, the main objective of this thesis is to develop a method for environmental building design optimization that is applicable in the design process. The key concept proposed in this thesis is to combine LCA with parametric design, because it proved to have a high potential for design optimization. The research approach includes the analysis of the characteristics of LCA for buildings and the architectural design stages to identify the research gap, the establishment of a requirement catalogue, the development of a method based on a digital, parametric model, and an evaluation of the method. An analysis of currently available approaches for LCA of buildings indicates that they are either holistic but very complex or simple but not holistic. Furthermore, none of them provide the opportunity for optimization in the architectural design process, which is the main research gap. The requirements derived from the analysis have been summarized in the form of a catalogue. This catalogue can be used to evaluate both existing approaches and potential methods developed in the future. In this thesis, it served as guideline for the development of the parametric method - Parametric Life Cycle Assessment (PLCA). The unique main feature of PLCA is that embodied and operational environmental impact are calculated together. In combination with the self-contained workflow of the method, this provides the basis for holistic, time-efficient environmental design optimization. The application of PLCA to three examples indicated that all established mandatory requirements are met. In all cases, environmental impact could be significantly reduced. In comparison to conventional approaches, PLCA was shown to be much more time-efficient. PLCA allows architects to focus on their main task of designing the building, and finally makes LCA practically useful as one of several criteria for design optimization. With PLCA, the building design can be time-efficiently optimized from the beginning of the most influential early design stages, which has not been possible until now. PLCA provides a good starting point for further research. In the future, it could be extended by integrating the social and economic aspects of sustainability.},
  subject      = {Bauentwurf},
  language  = {en}
}
@phdthesis{Wenzel,
  author    = {Wenzel, Jakob},
  title     = {Design and Analysis of Cryptographic Algorithms for Authentication},
  doi       = {10.25643/bauhaus-universitaet.3714},
  url       = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20171208-37140},
  school      = {Bauhaus-Universit{\"a}t Weimar},
  abstract  = {During the previous decades, the upcoming demand for security in the digital world, e.g., the Internet, lead to numerous groundbreaking research topics in the field of cryptography. This thesis focuses on the design and analysis of cryptographic primitives and schemes to be used for authentication of data and communication endpoints, i.e., users. It is structured into three parts, where we present the first freely scalable multi-block-length block-cipher-based compression function (Counter-bDM) in the first part. The presented design is accompanied by a thorough security analysis regarding its preimage and collision security. The second and major part is devoted to password hashing. It is motivated by the large amount of leaked password during the last years and our discovery of side-channel attacks on scrypt - the first modern password scrambler that allowed to parameterize the amount of memory required to compute a password hash. After summarizing which properties we expect from a modern password scrambler, we (1) describe a cache-timing attack on scrypt based on its password-dependent memory-access pattern and (2) outline an additional attack vector - garbage-collector attacks - that exploits optimization which may disregard to overwrite the internally used memory. Based on our observations, we introduce Catena - the first memory-demanding password-scrambling framework that allows a password-independent memory-access pattern for resistance to the aforementioned attacks. Catena was submitted to the Password Hashing Competition (PHC) and, after two years of rigorous analysis, ended up as a finalist gaining special recognition for its agile framework approach and side-channel resistance. We provide six instances of Catena suitable for a variety of applications. We close the second part of this thesis with an overview of modern password scramblers regarding their functional, security, and general properties; supported by a brief analysis of their resistance to garbage-collector attacks. The third part of this thesis is dedicated to the integrity (authenticity of data) of nonce-based authenticated encryption schemes (NAE). We introduce the so-called j-IV-Collision Attack, allowing to obtain an upper bound for an adversary that is provided with a first successful forgery and tries to efficiently compute j additional forgeries for a particular NAE scheme (in short: reforgeability). Additionally, we introduce the corresponding security notion j-INT-CTXT and provide a comparative analysis (regarding j-INT-CTXT security) of the third-round submission to the CAESAR competition and the four classical and widely used NAE schemes CWC, CCM, EAX, and GCM.},
  subject      = {Kryptologie},
  language  = {en}
}
@phdthesis{Hahn,
  author    = {Hahn, S{\"o}nke},
  title     = {Bunker—TV, TV—Bunker: Heterotope Mechanismen am Beispiel von Schutzbauwerken und (Fernseh-)Serien},
  doi       = {10.25643/bauhaus-universitaet.3711},
  url       = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20171205-37116},
  school      = {Bauhaus-Universit{\"a}t Weimar},
  pages     = {376 + 256},
  abstract  = {Die vorliegende Dissertation widmet sich anhand eines kurios anmutenden, aber auf einer Metaebene fruchtbaren Vergleichs von Schutzbauwerken und Fernsehserien historischen und aktuellen Mechanismen menschlichen Denkens und Handelns. Als theoretische Basis dieser Abhandlung fungiert die Heterotopie - ein Konzept des franz{\"o}sischen Philosophen Michel Foucault. Die Heterotopie ist ein inflation{\"a}r gebrauchtes, oft nur oberfl{\"a}chlich betrachtetes Theorem. Das Konzept wird hier nun mit Blick auf das Gesamtwerk Foucaults en d{\´e}tail untersucht sowie um korrelierende Ans{\"a}tze (Aug{\´e}, Lefebvre, Soja ...) erg{\"a}nzt. Aus dieser Betrachtung l{\"a}sst sich ein {\"u}ber Foucault hinausgehender, analytisch nutzbarer Katalog ableiten. Verk{\"u}rzt wird die Heterotopie folgendermaßen bestimmt: Neben der Definition der Heterotopie als Raum des Anderen, als (gesellschaftskritischer) Gegenraum kann sie dem wie auch immer bestimmten Normalraum unterstellt sein. Die Heterotopie ist m{\"o}glicherweise eine bauliche Manifestation schwarz-weißen Denkens, von Ausgrenzung und sichtbarer Unsichtbarkeit, sie wird zur Realisation wie auch immer definierter Ideale oder Stereotypen. Die Heterotopie ist allerdings auch als ein (hybrides) Dazwischen denkbar, welches sich als katalytischer Raum, im dialektischen Sinne als Ort der Synthese {\"a}ußert. Es k{\"o}nnte als Niemandsland oder als Phase (im Leben) charakterisiert werden. Analog zum letzten Beispiel l{\"a}sst sich die Heterotopie als progressiv-seriell beschreiben. Ihre stagnierend bis variierende Serialit{\"a}t kann sich im Betreten identischer R{\"a}ume {\"a}ußern - mal als verl{\"a}sslich oder erm{\"u}dend empfunden. Nicht nur die einem entsprechenden Raum entgegengebrachten Konnotationen sind vielf{\"a}ltig bis ambivalent, die Heterotopie ist neben real-r{\"a}umlicher auch virtueller Fasson: Betonmauer finden bisweilen eine Entsprechung im einfachen Harmoniefernsehen. Einander heterotop gegen{\"u}berstehenden R{\"a}umen wird etwa mit der Figur Walter White in der komplexen Fernsehserie "Breaking Bad" entsprochen - ist er doch hin und her gerissen zwischen seiner biederen, aber geliebten Familie einerseits und der abstoßend gewaltt{\"a}tigen, aber extrovertierende Potentiale bergenden Drogenproduktion andererseits. Die sogenannte Leihk{\"o}rperschaft bzw. die Immersion lassen sich zur Beschreibung verschiedener Heterotopie-Erfahrungen nutzen. Dieses Eintauchen/Betreten wird hier als Rezeptionsph{\"a}nomen zwischen sensomotorischer Illusion und inhaltlich-narrativem Sog, zw. Fixierung des K{\"o}rpers und Einbezug desselbigen definiert. Die beiden Untersuchungsfelder werden jeweils f{\"u}r sich historisch und theoretisch umrissen. Zum noch jungen Feld serieller Theorie/der Definition narrativer Typen (im TV bzw. dem Qualit{\"a}tsfernsehen) wird ein einf{\"u}hrender {\"U}berblick geboten. Die praktischen Arbeiten setzen sich {\"a}sthetisch, narrativ und inhaltlich mit der Heterotopie auseinander: In "Habitat" und "Habitat 2" werden serielle Konzepte audiovisuell (u. a. als Fulldome-Version) erprobt. Dabei wird insbesondere das Heterotope im Konzept "Autor" untersucht - der Autor als distinkte und gleichsam konfliktbehaftete, in zahlreiche Subjekte zerlegte Figur. "Habitat 3" ist ein Publikationskonzept, welches mit etablierten (heterotopen) Strukturen des Sammelbands bricht und zugleich die heterotopen Facetten des fiktionalen Fernsehens simuliert. Band I beinhaltet sowohl den theoretischen Teil der Promotion als auch die Erl{\"a}uterung der praktischen Arbeiten. Band II erm{\"o}glicht einen Einblick in die konzeptionellen Prozesse hinter den drei k{\"u}nstlerischen Projekten.},
  subject      = {Heterotopie},
  language  = {de}
}
@phdthesis{Podlaszewska,
  author    = {Podlaszewska, Rizky Suci Ammalia},
  title     = {The Placemaking of Destination. Localization and Commoditization process of Urban Tourism. Study case Palembang Indonesia},
  doi       = {10.25643/bauhaus-universitaet.3699},
  url       = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20171201-36995},
  school      = {Bauhaus-Universit{\"a}t Weimar},
  abstract  = {This research addresses the discourse of tourism as a tool for place-making of urban destination. Relevant to the study of place-making is the analysis of the commoditization and localization process dependent upon the appropriation of urban landscape and local cultures. In the research, localization is interpreted as the act of determining the attributes of locality, while commoditization is defined as the process by which local attributes that have commercial potential end up in becoming tourism commodity. Following this, the commoditization of intrinsic cultural value is disseminated within a branding strategy and intervention reflecting social and political relations. Therefore, the research suggests that tourism place-making has not only been constructed through the top-down regulatory body, but has been also generated through the attributes of its locality. By utilizing the critical and constructivist paradigm, the research depicts the conditions of the localization and commoditization process in establishing the base line of its realization within the symbolic economy. Thus, a qualitative case study approach was adopted. The study area of this dissertation is Palembang, as one of the capital cities in Indonesia advancing in its overall urban development. To investigate urban tourism as a tool for development strategy, it is useful to investigate the role of tourism which embodies (1) spatial transformation; how tourism gives significant impacts on urban form, and (2) the socio-cultural aspect; how neighbourhood is related to tourism industry. The findings suggest that tourism place-making involves the reciprocity of urban dynamics: cities take on tourism as a reference model of development, and tourist areas adopt the proliferation of cultural lifestyle to meet the industry's demands.},
  subject      = {Urbanistik},
  language  = {en}
}
@phdthesis{Nariman,
  author    = {Nariman, Nazim},
  title     = {Numerical Methods for the Multi-Physical Analysis of Long Span Cable-Stayed Bridges},
  doi       = {10.25643/bauhaus-universitaet.3710},
  url       = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20171122-37105},
  school      = {Bauhaus-Universit{\"a}t Weimar},
  pages     = {236},
  abstract  = {The main categories of wind effects on long span bridge decks are buffeting, flutter, vortex-induced vibrations (VIV) which are often critical for the safety and serviceability of the structure. With the rapid increase of bridge spans, research on controlling wind-induced vibrations of long span bridges has been a problem of great concern.The developments of vibration control theories have led to the wide use of tuned mass dampers (TMDs) which has been proven to be effective for suppressing these vibrations both analytically and experimentally. Fire incidents are also of special interest in the stability and safety of long span bridges due to significant role of the complex phenomenon through triple interaction between the deck with the incoming wind flow and the thermal boundary of the surrounding air. This work begins with analyzing the buffeting response and flutter instability of three dimensional computational structural dynamics (CSD) models of a cable stayed bridge due to strong wind excitations using ABAQUS finite element commercial software. Optimization and global sensitivity analysis are utilized to target the vertical and torsional vibrations of the segmental deck through considering three aerodynamic parameters (wind attack angle, deck streamlined length and viscous damping of the stay cables). The numerical simulations results in conjunction with the frequency analysis results emphasized the existence of these vibrations and further theoretical studies are possible with a high level of accuracy. Model validation is performed by comparing the results of lift and moment coefficients between the created CSD models and two benchmarks from the literature (flat plate theory) and flat plate by (Xavier and co-authors) which resulted in very good agreements between them. Optimum values of the parameters have been identified. Global sensitivity analysis based on Monte Carlo sampling method was utilized to formulate the surrogate models and calculate the sensitivity indices. The rational effect and the role of each parameter on the aerodynamic stability of the structure were calculated and efficient insight has been constructed for the stability of the long span bridge. 2D computational fluid dynamics (CFD) models of the decks are created with the support of MATLAB codes to simulate and analyze the vortex shedding and VIV of the deck. Three aerodynamic parameters (wind speed, deck streamlined length and dynamic viscosity of the air) are dedicated to study their effects on the kinetic energy of the system and the vortices shapes and patterns. Two benchmarks from the literature (Von Karman) and (Dyrbye and Hansen) are used to validate the numerical simulations of the vortex shedding for the CFD models. A good consent between the results was detected. Latin hypercube experimental method is dedicated to generate the surrogate models for the kinetic energy of the system and the generated lift forces. Variance based sensitivity analysis is utilized to calculate the main sensitivity indices and the interaction orders for each parameter. The kinetic energy approach performed very well in revealing the rational effect and the role of each parameter in the generation of vortex shedding and predicting the early VIV and the critical wind speed. Both one-way fluid-structure interaction (one-way FSI) simulations and two-way fluid-structure interaction (two-way FSI) co-simulations for the 2D models of the deck are executed to calculate the shedding frequencies for the associated wind speeds in the lock-in region in addition to the lift and drag coefficients. Validation is executed with the results of (Simiu and Scanlan) and the results of flat plate theory compiled by (Munson and co-authors) respectively. High levels of agreements between all the results were detected. A decrease in the critical wind speed and the shedding frequencies considering (two-way FSI) was identified compared to those obtained in the (one-way FSI). The results from the (two-way FSI) approach predicted appreciable decrease in the lift and drag forces as well as prediction of earlier VIV for lower critical wind speeds and lock-in regions which exist at lower natural frequencies of the system. These conclusions help the designers to efficiently plan and consider for the design and safety of the long span bridge before and after construction. Multiple tuned mass dampers (MTMDs) system has been applied in the three dimensional CSD models of the cable stayed bridge to analyze their control efficiency in suppressing both wind -induced vertical and torsional vibrations of the deck by optimizing three design parameters (mass ratio, frequency ratio and damping ratio) for the (TMDs) supporting on actual field data and minimax optimization technique in addition to MATLAB codes and Fast Fourier Transform technique. The optimum values of each parameter were identified and validated with two benchmarks from the literature, first with (Wang and co-authors) and then with (Lin and co-authors). The validation procedure detected a good agreement between the results. Box-Behnken experimental method is dedicated to formulate the surrogate models to represent the control efficiency of the vertical and torsional vibrations. Sobol's sensitivity indices are calculated for the design parameters in addition to their interaction orders. The optimization results revealed better performance of the MTMDs in controlling both the vertical and the torsional vibrations for higher mode shapes. Furthermore, the calculated rational effect of each design parameter facilitates to increase the control efficiency of the MTMDs in conjunction with the support of the surrogate models which simplifies the process of analysis for vibration control to a great extent. A novel structural modification approach has been adopted to eliminate the early coupling between the bending and torsional mode shapes of the cable stayed bridge. Two lateral steel beams are added to the middle span of the structure. Frequency analysis is dedicated to obtain the natural frequencies of the first eight mode shapes of vibrations before and after the structural modification. Numerical simulations of wind excitations are conducted for the 3D model of the cable stayed bridge. Both vertical and torsional displacements are calculated at the mid span of the deck to analyze the bending and the torsional stiffness of the system before and after the structural modification. The results of the frequency analysis after applying lateral steel beams declared that the coupling between the vertical and torsional mode shapes of vibrations has been removed to larger natural frequencies magnitudes and higher rare critical wind speeds with a high factor of safety. Finally, thermal fluid-structure interaction (TFSI) and coupled thermal-stress analysis are utilized to identify the effects of transient and steady state heat-transfer on the VIV and fatigue of the deck due to fire incidents. Numerical simulations of TFSI models of the deck are dedicated to calculate the lift and drag forces in addition to determining the lock-in regions once using FSI models and another using TFSI models. Vorticity and thermal fields of three fire scenarios are simulated and analyzed. The benchmark of (Simiu and Scanlan) is used to validate the TFSI models, where a good agreement was manifested between the two results. Extended finite element method (XFEM) is adopted to create 3D models of the cable stayed bridge to simulate the fatigue of the deck considering three fire scenarios. The benchmark of (Choi and Shin) is used to validate the damaged models of the deck in which a good coincide was seen between them. The results revealed that the TFSI models and the coupled thermal-stress models are significant in detecting earlier vortex induced vibration and lock-in regions in addition to predicting damages and fatigue of the deck and identifying the role of wind-induced vibrations in speeding up the damage generation and the collapse of the structure in critical situations.},
  subject      = {Stabilit{\"a}t},
  language  = {en}
}
@phdthesis{Ehrhardt,
  author    = {Ehrhardt, Dirk},
  title     = {ZUM EINFLUSS DER NACHBEHANDLUNG AUF DIE GEF{\"U}GEAUSBILDUNG UND DEN FROST-TAUMITTELWIDERSTAND DER BETONRANDZONE},
  doi       = {10.25643/bauhaus-universitaet.3688},
  url       = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20171120-36889},
  school      = {Bauhaus-Universit{\"a}t Weimar},
  pages     = {235},
  abstract  = {Die Festigkeitsentwicklung des Zementbetons basiert auf der chemischen Reaktion des Zementes mit dem Anmachwasser. Durch Nachbehandlungsmaßnahmen muss daf{\"u}r gesorgt werden, dass dem Zement gen{\"u}gend Wasser f{\"u}r seine Reaktion zur Verf{\"u}gung steht, da sonst ein Beton mit minderer Qualit{\"a}t entsteht. Die vorliegende Arbeit behandelt die grunds{\"a}tzlichen Fragen der Betonnachbehandlung bei Anwendung von Straßenbetonen. Im Speziellen wird die Frage des erforderlichen Nachbehandlungsbedarfs von h{\"u}ttensandhaltigen Kompositzementen betrachtet. Die Wirkung der Nachbehandlung wird anhand des erreichten Frost-Tausalz-Widerstandes und der Gef{\"u}geausbildung in der unmittelbaren Betonrandzone bewertet. Der Fokus der Untersuchungen lag auf abgezogenen Betonoberfl{\"a}chen. Es wurde ein Modell zur Austrocknung des jungen Betons erarbeitet. Es konnte gezeigt werden, dass in einer fr{\"u}hen Austrocknung (Kapillarphase) keine kritische Austrocknung der Betonrandzone einsetzt, sondern der Beton ann{\"a}hrend gleichm{\"a}ßig {\"u}ber die H{\"o}he austrocknet. Es wurde ein Nomogramm entwickelt, mit dem die Dauer der Kapillarphase in Abh{\"a}ngigkeit der Witterung f{\"u}r Straßenbetone abgesch{\"a}tzt werden kann. Eine kritische Austrocknung der wichtigen Randzone setzt nach Ende der Kapillarphase ein. F{\"u}r Betone unter Verwendung von Zementen mit langsamer Festigkeitsentwicklung ist die Austrocknung der Randzone nach Ende der Kapillarphase besonders ausgepr{\"a}gt. Im Ergebnis zeigen diese Betone dann einen geringen Frost-Tausalz-Widerstand. Mit Zementen, die eine 2d-Zementdruckfestigkeit ≥ 23,0 N/mm² aufweisen, wurde unabh{\"a}ngig von der Zementart (CEM I oder CEM II/B-S) auch dann ein hoher Frost-Tausalz-Widerstand erreicht, wenn keine oder eine schlechtere Nachbehandlung angewendet wurde. F{\"u}r die Praxis ergibt sich damit eine einfache M{\"o}glichkeit der Vorauswahl von geeigneten Zementen f{\"u}r den Verkehrsfl{\"a}chenbau. Betone, die unter Verwendung von Zementen mit langsamere Festigkeitsentwicklung hergestellt werden, erreichen einen hohen Frost-Tausalz-Widerstand nur mit einer geeigneten Nachbehandlung. Die Anwendung von fl{\"u}ssigen Nachbehandlungsmitteln (NBM gem{\"a}ß TL NBM-StB) erreicht eine {\"a}hnliche Wirksamkeit wie eine 5 t{\"a}gige Feuchtnachbehandlung. Voraussetzung f{\"u}r die Wirksamkeit der NBM ist, dass sie auf eine Betonoberfl{\"a}che ohne sichtbaren Feuchtigkeitsfilm (feuchter Glanz) aufgespr{\"u}ht werden. Besonders wichtig ist die Beachtung des richtigen Auftragszeitpunktes bei k{\"u}hler Witterung, da hier aufgrund der verlangsamten Zementreaktion der Beton l{\"a}nger Anmachwasser abst{\"o}ßt. Ein zu fr{\"u}her Auftrag des Nachbehandlungsmittels f{\"u}hrt zu einer Verschlechterung der Qualit{\"a}t der Betonrandzone. Durch Bereitstellung hydratationsabh{\"a}ngiger Transportkenngr{\"o}ßen (Feuchtetransport im Beton) konnten numerische Berechnungen zum Zusammenspiel zwischen der Austrocknung, der Nachbehandlung und der Gef{\"u}geentwicklung durchgef{\"u}hrt werden. Mit dem erstellten Berechnungsmodell wurden Parameterstudien durchgef{\"u}hrt. Die Berechnungen best{\"a}tigen die wesentlichen Erkenntnisse der Laboruntersuchungen. Dar{\"u}ber hinaus l{\"a}sst sich mit dem Berechnungsmodell zeigen, dass gerade bei langsam reagierenden Zementen und k{\"u}hler Witterung ohne eine Nachbehandlung eine sehr d{\"u}nne Randzone (ca. 500 µm - 1000 µm) mit stark erh{\"o}hter Kapillarporosit{\"a}t entsteht.},
  subject      = {Beton},
  language  = {de}
}
@phdthesis{MeyerKohlstock,
  author    = {Meyer-Kohlstock, Daniel},
  title     = {Prospects for Biochar in a Bio-Waste Cascade},
  doi       = {10.25643/bauhaus-universitaet.3631},
  url       = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20171108-36310},
  school      = {Bauhaus-Universit{\"a}t Weimar},
  pages     = {118},
  abstract  = {In the early 2000s the pre-Columbian, anthropologically produced black soil in the Amazon basin, „Terra Preta de {\´I}ndio", received greater scientific attention. Compared to the surrounding poor soils, this very fertile anthrosol contains significantly higher levels of microorganisms and nutrients. The reason for this was determined to be the likewise high levels of charred biomass. This stable carbon, now called biochar, has since been intensively examined as an option to improve soil and to store carbon. Although the creation of Terra Preta was most likely based on a purposeful utilization of organic residues from households and gardens, biochar plays no role in the current recycling of bio-waste. However, the implementation of biochar could lead to many improvements. Results from agricultural research suggest that not only the yield capacity of soils can be increased but also the process performance of composting and biogas plants. The latter is especially relevant since currently about 40\% of all collected bio-waste in Germany is recycled in an energy-material cascade consisting of anaerobic digestion and composting. The use of biochar in this cascade could then sequentially increase biogas yields, reduce greenhouse gas emissions, and improve compost quality. To realize the aforementioned advantages, the concept of biochar has to be integrated into the existing bio-waste cascade as practically as possible. This was done by the development of a theoretical scenario that allowed the analysis of energy and material flows to evaluate biochar's recycling performance. Furthermore, the legal and economic framework were examined to assess the feasibility of the extended cascade and to suggest possible adjustments to the frameworks.},
  subject      = {Kompost},
  language  = {en}
}
@phdthesis{Heidenreich,
  author    = {Heidenreich, Manuel},
  title     = {Untersuchungen zur Sauerstoffbereitstellung mit Perowskit- Keramik-Sch{\"u}ttungen in einem Festbett-Reaktor},
  doi       = {10.25643/bauhaus-universitaet.3607},
  url       = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20171027-36077},
  school      = {Bauhaus-Universit{\"a}t Weimar},
  pages     = {154},
  abstract  = {Diese Arbeit belegt, dass die Belastungen auf reversibel arbeitende keramische Materialien sehr gering ausfallen. Die regenerative Sauerstoffbereitstellung stellt damit grunds{\"a}tzlich niedrigere Anforderungen an die keramischen Perowskit-Materialien zur Sauerstofferzeugung als die Membrantechnologie. Das Absinken der Diffusionskoeffizienten bei niedrigen Temperaturen ist deutlich weniger nachteilig als bei den Membranen die vergleichbare Materialien nutzen. Dies konnte gezeigt werde, indem mit der die O 2 -Entladetechnik und -Beladetechnik im Vergleich zur O 2 -Abtrennung durch keramische Membranen bei vergleichsweise niedrigen Temperaturen bereits große O 2 -Mengen erzeugt werden k{\"o}nnen. Infolge der niedrigen Temperaturen bestehen keine Probleme mit Reaktionen zwischen dem sauerstoffbereitstellenden Material und den Reaktorwerkstoffen. Dadurch gestaltet sich die Einbindung und Nutzung von Festbett-Sch{\"u}ttungen denkbar einfach. Im Vergleich dazu sind die Anbindung und der Betrieb von d{\"u}nnen keramischen Membranen in einem Reaktor deutlich aufwendiger. Es ist weniger Peripherie und verfahrenstechnischer Aufwand zur Sauerstoffabtrennung durch reversibel arbeitende Materialien n{\"o}tig als bei der kryogenen Luftzerlegung, der Druckwechseladsorption oder den Membrantechnologien. Die regenerative Sauerstoffbereitstellung kann sowohl bei neuen als auch bestehenden Anlagen, die Sauerstoff ben{\"o}tigen implementiert werden. Damit ist es m{\"o}glich den Transport des Sauerstoffs entfallen zu lassen. Eine partielle Phasenumwandlung des BSCF8020 bei erh{\"o}hter Temperatur und hohem Sauerstoffangebot spielt f{\"u}r die regenerative Sauerstoffbereitstellung eine untergeordnete Rolle, da die n{\"o}tigen Zieltemperaturen (450 ggf. bis 650 °C) zur O 2 -Beladung und -Entladung niedriger sind, als der Temperaturbereich in dem die Zersetzung auftreten kann (750 bis 800 °C). Des Weiteren ist die Zeitspanne (O 2 -Beladungsteilzyklus) in der das BSCF8020 ausreichend hohen Sauerstoffgehalten (p O2 > 10 -3 bar) ausgesetzt ist, zu kurz um diese Umwandlungen zu vollziehen. Der O 2 -Entladungsteilzyklus sorgt zus{\"a}tzlich immer daf{\"u}r, dass sich u. U. beginnende Zersetzung zur{\"u}ckbildet, da die kubische Phase in Richtung niedrigerer p O2 stabilisiert wird. Es konnte belegt werden, dass die elektronische Steuerung des zyklischen Sauerstoffausbaus und -einbaus beherrschbar ist. Der hohe Abtrenngrad der keramischen Materialien f{\"u}hrt dazu, dass der Sauerstoff elektrolytisch rein zu Verf{\"u}gung gestellt wird. Grunds{\"a}tzlich sind weitere Forschungen zur Steigerung der Sauerstoffmengen, die pro eingesetzter Masseeinheit an Keramik gewonnen werden k{\"o}nnen, immer anzustreben, da damit u. U. der Materialeinsatz weiter gesenkt oder auch die energetischen Aufwendungen weiter reduziert werden k{\"o}nnen. Bei dem, f{\"u}r die multizyklischen Untersuchungen dieser Arbeit ausgew{\"a}hlten BSCF8020(SVT) hat die Cobalt-Komponente mit ca. 80 \% den {\"u}berwiegenden Kostenanteil am Sauerstoff bereitstellenden Material. BSCF-Keramiken mit h{\"o}herem Eisen-Anteil sollten f{\"u}r multizyklische Anwendungen in Festbett-Reaktoren einer vertiefenden Charakterisierung unterzogen werden, um weitere geeignete Perowskite mit niedrigen Materialkosten zu erschließen.},
  subject      = {Perowskit},
  language  = {de}
}
@phdthesis{Arboleda,
  author    = {Arboleda, Pablo},
  title     = {Reckoning with Incompiuto Siciliano: Unfinished Public Works as Modern Ruins and All which it Entails},
  doi       = {10.25643/bauhaus-universitaet.3265},
  url       = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20170715-32656},
  school      = {Bauhaus-Universit{\"a}t Weimar},
  pages     = {150},
  abstract  = {Since the end of the 1950s, Italy has focused part of its modernization on the erection of public works. Due to corruption, mafia, and further malpractice, this form of development has occasionally failed, producing a high number of constructions that have remained unfinished for decades. In 2007, the group of artists Alterazioni Video constructed an informal survey in the form of an on-line tool open to public contributions, which revealed that there are 395 unfinished public works in Italy from which 156, approximately 39.5\%, are located in Sicily alone. In view of such a statistic, Alterazioni Video opted to coin the term 'Incompiuto Siciliano' - literally 'Sicilian Incompletion' - to refer to unfinished public works as a formal architectural style. This re-interpretation, which aims to convey the recovered dignity of these 'modern ruins', considers unfinished public works a type of heritage with the potential to represent the entirety of Italian society. Furthermore, it goes as far as to say an unfinished public work is 'Incompiuto Siciliano' despite being located in another of the Italian regions. This doctoral dissertation embraces the artists' argument to develop a complete study of Incompiuto Siciliano by embedding this architectural style/artistic project within the main debates on modern ruins at present. This is important because it is expected to contribute to the revalorization and eventual recommissioning of unfinished sites by validating Incompiuto Siciliano in the realm of academia. Furthermore, this work aspires to be a worthwhile source of information for future investigations dealing with cultural interpretations of incompletion in any other context - a not unreasonable goal considering how unfinished works are one of the key urban topics after the 2008 financial crisis. Hence, this doctoral dissertation uses Incompiuto Siciliano to discuss a different perspective in each of the five chapters and, though these can be read as independent contributions, the objective is that all chapters read together, form a clear, concise, continuous unit. And so it must be said this is not a dissertation about unfinished public works in Italy; this is a dissertation about Incompiuto Siciliano as an artistic response to unfinished public works in Italy - which clearly requires an interdisciplinary analysis involving Urban Studies, Cultural Geography, Contemporary Archaeology, Critical Heritage and Visual Arts.},
  subject      = {Kulturerbe},
  language  = {en}
}
@phdthesis{Smirnova,
  author    = {Smirnova, Elena},
  title     = {"Kennst du das Land, wo bl{\"u}ht Oranienbaum?" - A Case Study on Strategic and Territorial Planning in St. Petersburg (Russia)},
  doi       = {10.25643/bauhaus-universitaet.3255},
  url       = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20170711-32556},
  school      = {Bauhaus-Universit{\"a}t Weimar},
  abstract  = {The research examines the system of strategic and territorial planning of St. Petersburg focusing on Lomonosov (Oranienbaum) as its case study. The study provides the analysis of the planning documentation developed for the city in the post-Soviet period. In particular, it elaborates on the currently enforced Strategy of Economic and Social Development of St. Petersburg-2030 (2014) and the City General Plan (2005), discussing the aspects of their development and implementation, as well as complex interrelation. Thereby, peculiarities of the spatial development of the St. Petersburg agglomeration are also investigated, elaborating on the state policy on agglomerations, historic development of St. Petersburg and relations with the Leningrad Region, governance and imbalances of the St. Petersburg spatial development, including proposed development scenarios. Consequently, the study employs a highly indicative case of the Lomonosov town municipal unit aiming to illustrate the practical implementation of administrative, territorial and strategic policies in a given context within a system of the state planning adopted in St. Petersburg, in particular, taking into consideration recently proclaimed necessity for the transition to a polycentric city model following an innovative scenario for the socioeconomic and spatial development. In particular, Lomonosov (Oranienbaum) is explored egarding its current socio-economic situation and development scenarios: industrial site and cultural tourism. The Oranienbaum museum and nature-reserve is also thoroughly assessed with regard to its cultural tourism potential. Finally, the urban environment of Lomonosov (Oranienbaum) is comprehensively scrutinized in terms of its historic development, residential housing typology, UNESCO World Heritage preservation and local urban heritage. In conclusion, the data on Lomonosov present in the St. Petersburg strategic and territorial planning documents is provided.},
  subject      = {Lomonossow},
  language  = {en}
}