@phdthesis{Spoerr2011,
  author    = {Spoerr, Kathrin},
  title     = {Recht und Revolution : deutsche {\"O}konomen und ihr Einfluss auf das Recht der Weimarer Republik - eine Zeitschriftenschau 1917 - 1920},
  series = {Rechtshistorische Reihe},
  volume    = {412},
  journal   = {Rechtshistorische Reihe},
  publisher = {Lang},
  address   = {Frankfurt am Main},
  isbn      = {978-3-631-60327-7},
  issn      = {0344-290X},
  pages     = {282 S.},
  year      = {2011},
  language  = {de}
}
@phdthesis{Linne2011,
  author    = {Linne, Carina Sophia},
  title     = {Frei gespielt : Frauenfußball im geteilten Deutschland},
  publisher = {Bebra-Wiss.-Verl.},
  address   = {Berlin},
  isbn      = {978-3-937233-89-5},
  pages     = {314 S.},
  year      = {2011},
  language  = {de}
}
@phdthesis{Hartig2011,
  author    = {Hartig, Juliane},
  title     = {Learning and innovation a distance : an empirical investigation into the benefits and liabilities of different froms of distance on interactive learning and novelty creation in German biotechnology SMEs},
  publisher = {Gabler Verlag / Springer Fachmedien Wiesbaden GmbH Wiesbaden},
  address   = {Wiesbaden},
  isbn      = {978-3-8349-3178-8},
  doi       = {10.1007/978-3-8349-6904-0},
  pages     = {410 S.},
  year      = {2011},
  language  = {en}
}
@phdthesis{Krehl2011,
  author    = {Krehl, Susanne},
  title     = {Das Selenoprotein Glutathionperoxidase-2 : physiologische Funktion und Einfluss auf die entz{\"u}ndungsassoziierte Colonkarzinogenese},
  url       = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus-50220},
  school      = {Universit{\"a}t Potsdam},
  year      = {2011},
  abstract  = {Bei der Entdeckung der Glutathionperoxidase-2 (GPx2) wurde zun{\"a}chst davon ausgegangen, dass die Funktion dieses Enzyms im Kryptengrund des Colons einzig in der Reduktion von H2O2 besteht. Im Laufe der weiteren Erforschung zeigte sich, dass GPx2 auch in verschiedenen Tumorgeweben vermehrt exprimiert wird. Dabei wird diskutiert, ob die Wirkung von GPx2 im Tumor eher als pro- oder als antikarzinogen einzustufen ist. Mehrere Experimente in vitro und in vivo zeigten antiinflammatorische Eigenschaften der GPx2. Aufgrund dieser Befunde wird derzeit {\"u}ber weitere Funktionen der GPx2 spekuliert. In dieser Arbeit wurde die physiologische Funktion von GPx2 n{\"a}her erforscht, dazu wurden Wildtyp- und GPx2-Knockout-M{\"a}use in Hinblick auf Ver{\"a}nderungen der Enzymexpression und der Colonmorphologie untersucht. Es wurden drei verschiedene Selendi{\"a}ten verf{\"u}ttert: selenarmes, selenad{\"a}quates und selensupplementiertes Futter. Unter physiologischen Bedingungen ist am Kryptengrund des Colons, innerhalb der proliferierenden Zone, die Mitoserate am h{\"o}chsten. Der Großteil der apoptotischen Zellen ist hingegen an der Kryptenspitze vorzufinden. Durch den Knockout von GPx2 kam es zu einer signifikanten Erh{\"o}hung der Apoptoserate am Kryptengrund. Dabei war der gr{\"o}ßte Effekt auf selenarmem Futter zu verzeichnen. Hierbei wurde sogar eine Ver{\"a}nderung der Colonmorphologie dokumentiert, da die Verschiebung der Proliferationszone in Richtung Kryptenspitze eine Verl{\"a}ngerung der Krypten nach sich zog. Im Wildtyp wurden keine Apoptosen im Kryptengrund detektiert. GPx1 wird unter physiologischen Bedingungen im Gegensatz zur GPx2 in der Kryptenspitze exprimiert und ist im Selenmangel nicht mehr detektierbar. Der Knockout von GPx2 erh{\"o}hte die GPx1-Expression im Kryptengrund auf allen drei Selendi{\"a}ten. Diese {\"U}berexpression von GPx1 am Kryptengrund soll vermutlich den Verlust von GPx2 an dieser Stelle kompensieren. Da jedoch dort die massive Apoptoserate detektiert wurde, kann die GPx1 nicht die komplette Funktion von GPx2 kompensieren. Diese Ergebnisse deuten darauf hin, dass die Funktion von GPx2 nicht nur in der Reduktion von H2O2 liegt. Vielmehr kann eine Rolle bei der Aufrechterhaltung der Hom{\"o}ostase von Zellen postuliert werden. Ein weiterer Bestandteil dieser Arbeit war die Kl{\"a}rung der Frage, welchen Einfluss GPx2 auf die entz{\"u}ndungsassoziierte Colonkarzinogenese aus{\"u}bt. In dem hierf{\"u}r verwendeten AOM/DSS-Model wird der karzinogene Prozess durch Entz{\"u}ndung vorangetrieben. Es erfolgte sowohl im Wildtyp als auch im GPx2-Knockout zum einen die Bewertung des Entz{\"u}ndungsstatus des Colons und zum anderen wurde die Anzahl von ACF und Tumoren verglichen. Das Colon im GPx2-Knockout war wesentlich st{\"a}rker entz{\"u}ndet als im Wildtyp. Diese Ergebnisse best{\"a}tigen die f{\"u}r die GPx2 postulierte antiinflammatorische Funktion. Normalerweise f{\"u}hrt eine Erh{\"o}hung der Mitoseanzahl zur Regeneration des entz{\"u}ndeten Gewebes. Jedoch beeinflusst der Verlust von GPx2 vermutlich den Ablauf der Entz{\"u}ndung, indem beispielsweise die Regeneration des Gewebes durch die enorm hohe Apoptoserate am Kryptengrund verlangsamt wird. Des Weiteren hatten sich im GPx2-Knockout tendenziell mehr Tumore entwickelt. Somit korrelierte die Entz{\"u}ndung des Colons mit der Entwicklung von Tumoren. Der Verlust von GPx2 beg{\"u}nstigte vermutlich sowohl die Tumorinitiation als auch die Tumorprogression. Allerdings stimulierte die Expression von GPx2 ebenfalls das Tumorwachstum. Es kann geschlussfolgert werden, dass eine ad{\"a}quate GPx2-Expression vor Entz{\"u}ndung sch{\"u}tzt und somit das Risiko f{\"u}r Colonkrebs senkt. Ob GPx2 aber insgesamt pro- oder antikarzinogen wirkt, h{\"a}ngt vermutlich vom Stadium des Colonkarzinogenese ab.},
  language  = {de}
}
@phdthesis{Wichura2011,
  author    = {Wichura, Henry},
  title     = {Topographic evolution of the East African Plateau : a combined study on lava-flow modeling and paleo-topography},
  url       = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus-52363},
  school      = {Universit{\"a}t Potsdam},
  year      = {2011},
  abstract  = {The East African Plateau provides a spectacular example of geodynamic plateau uplift, active continental rifting, and associated climatic forcing. It is an integral part of the East African Rift System and has an average elevation of approximately 1,000 m. Its location coincides with a negative Bouguer gravity anomaly with a semi-circular shape, closely related to a mantle plume, which influences the Cenozoic crustal development since its impingement in Eocene-Oligocene time. The uplift of the East African Plateau, preceding volcanism, and rifting formed an important orographic barrier and tectonically controlled environment, which is profoundly influenced by climate driven processes. Its location within the equatorial realm supports recently proposed hypotheses, that topographic changes in this region must be considered as the dominant forcing factor influencing atmospheric circulation patterns and rainfall distribution. The uplift of this region has therefore often been associated with fundamental climatic and environmental changes in East Africa and adjacent regions. While the far-reaching influence of the plateau uplift is widely accepted, the timing and the magnitude of the uplift are ambiguous and are still subject to ongoing discussion. This dilemma stems from the lack of datable, geomorphically meaningful reference horizons that could record surface uplift. In order to quantify the amount of plateau uplift and to find evidence for the existence of significant relief along the East African Plateau prior to rifting, I analyzed and modeled one of the longest terrestrial lava flows; the 300-km-long Yatta phonolite flow in Kenya. This lava flow is 13.5 Ma old and originated in the region that now corresponds to the eastern rift shoulders. The phonolitic flow utilized an old riverbed that once drained the eastern flank of the plateau. Due to differential erosion this lava flow now forms a positive relief above the parallel-flowing Athi River, which is mimicking the course of the paleo-river. My approach is a lava-flow modeling, based on an improved composition and temperature dependent method to parameterize the flow of an arbitrary lava in a rectangular-shaped channel. The essential growth pattern is described by a one-dimensional model, in which Newtonian rheological flow advance is governed by the development of viscosity and/or velocity in the internal parts of the lava-flow front. Comparing assessments of different magma compositions reveal that length-dominated, channelized lava flows are characterized by high effusion rates, rapid emplacement under approximately isothermal conditions, and laminar flow. By integrating the Yatta lava flow dimensions and the covered paleo-topography (slope angle) into the model, I was able to determine the pre-rift topography of the East African Plateau. The modeling results yield a pre-rift slope of at least 0.2°, suggesting that the lava flow must have originated at a minimum elevation of 1,400 m. Hence, high topography in the region of the present-day Kenya Rift must have existed by at least 13.5 Ma. This inferred mid-Miocene uplift coincides with the two-step expansion of grasslands, as well as important radiation and speciation events in tropical Africa. Accordingly, the combination of my results regarding the Yatta lava flow emplacement history, its location, and its morphologic character, validates it as a suitable "paleo-tiltmeter" and has thus to be considered as an important topographic and volcanic feature for the topographic evolution in East Africa.},
  language  = {en}
}
@phdthesis{Kellermann2011,
  author    = {Kellermann, Thorsten},
  title     = {Accurate numerical relativity simulations of non-vacuumspace-times in two dimensions and applications to critical collapse},
  url       = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus-59578},
  school      = {Universit{\"a}t Potsdam},
  year      = {2011},
  abstract  = {This Thesis puts its focus on the physics of neutron stars and its description with methods of numerical relativity. In the first step, a new numerical framework the Whisky2D code will be developed, which solves the relativistic equations of hydrodynamics in axisymmetry. Therefore we consider an improved formulation of the conserved form of these equations. The second part will use the new code to investigate the critical behaviour of two colliding neutron stars. Considering the analogy to phase transitions in statistical physics, we will investigate the evolution of the entropy of the neutron stars during the whole process. A better understanding of the evolution of thermodynamical quantities, like the entropy in critical process, should provide deeper understanding of thermodynamics in relativity. More specifically, we have written the Whisky2D code, which solves the general-relativistic hydrodynamics equations in a flux-conservative form and in cylindrical coordinates. This of course brings in 1/r singular terms, where r is the radial cylindrical coordinate, which must be dealt with appropriately. In the above-referenced works, the flux operator is expanded and the 1/r terms, not containing derivatives, are moved to the right-hand-side of the equation (the source term), so that the left hand side assumes a form identical to the one of the three-dimensional (3D) Cartesian formulation. We call this the standard formulation. Another possibility is not to split the flux operator and to redefine the conserved variables, via a multiplication by r. We call this the new formulation. The new equations are solved with the same methods as in the Cartesian case. From a mathematical point of view, one would not expect differences between the two ways of writing the differential operator, but, of course, a difference is present at the numerical level. Our tests show that the new formulation yields results with a global truncation error which is one or more orders of magnitude smaller than those of alternative and commonly used formulations. The second part of the Thesis uses the new code for investigations of critical phenomena in general relativity. In particular, we consider the head-on-collision of two neutron stars in a region of the parameter space where two final states a new stable neutron star or a black hole, lay close to each other. In 1993, Choptuik considered one-parameter families of solutions, S[P], of the Einstein-Klein-Gordon equations for a massless scalar field in spherical symmetry, such that for every P > P⋆, S[P] contains a black hole and for every P < P⋆, S[P] is a solution not containing singularities. He studied numerically the behavior of S[P] as P → P⋆ and found that the critical solution, S[P⋆], is universal, in the sense that it is approached by all nearly-critical solutions regardless of the particular family of initial data considered. All these phenomena have the common property that, as P approaches P⋆, S[P] approaches a universal solution S[P⋆] and that all the physical quantities of S[P] depend only on |P - P⋆|. The first study of critical phenomena concerning the head-on collision of NSs was carried out by Jin and Suen in 2007. In particular, they considered a series of families of equal-mass NSs, modeled with an ideal-gas EOS, boosted towards each other and varied the mass of the stars, their separation, velocity and the polytropic index in the EOS. In this way they could observe a critical phenomenon of type I near the threshold of black-hole formation, with the putative solution being a nonlinearly oscillating star. In a successive work, they performed similar simulations but considering the head-on collision of Gaussian distributions of matter. Also in this case they found the appearance of type-I critical behaviour, but also performed a perturbative analysis of the initial distributions of matter and of the merged object. Because of the considerable difference found in the eigenfrequencies in the two cases, they concluded that the critical solution does not represent a system near equilibrium and in particular not a perturbed Tolmann-Oppenheimer-Volkoff (TOV) solution. In this Thesis we study the dynamics of the head-on collision of two equal-mass NSs using a setup which is as similar as possible to the one considered above. While we confirm that the merged object exhibits a type-I critical behaviour, we also argue against the conclusion that the critical solution cannot be described in terms of equilibrium solution. Indeed, we show that, in analogy with what is found in, the critical solution is effectively a perturbed unstable solution of the TOV equations. Our analysis also considers fine-structure of the scaling relation of type-I critical phenomena and we show that it exhibits oscillations in a similar way to the one studied in the context of scalar-field critical collapse.},
  language  = {en}
}
@phdthesis{Federico2011,
  author    = {Federico, Stefania},
  title     = {Synthetic peptides derived from decorin as building blocks for biomaterials based on supramolecular interactions},
  url       = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus-59661},
  school      = {Universit{\"a}t Potsdam},
  year      = {2011},
  abstract  = {In this work, the development of a new molecular building block, based on synthetic peptides derived from decorin, is presented. These peptides represent a promising basis for the design of polymer-based biomaterials that mimic the ECM on a molecular level and exploit specific biological recognition for technical applications. Multiple sequence alignments of the internal repeats of decorin that formed the inner and outer surface of the arch-shaped protein were used to develop consensus sequences. These sequences contained conserved sequence motifs that are likely to be related to structural and functional features of the protein. Peptides representative for the consensus sequences were synthesized by microwave-assisted solid phase peptide synthesis and purified by RP-HPLC, with purities higher than 95 mol\%. After confirming the desired masses by MALDI-TOF-MS, the primary structure of each peptide was investigated by 1H and 2D NMR, from which a full assignment of the chemical shifts was obtained. The characterization of the peptides conformation in solution was performed by CD spectroscopy, which demonstrated that using TFE, the peptides from the outer surface of decorin show a high propensity to fold into helical structures as observed in the original protein. To the contrary, the peptides from the inner surface did not show propensity to form stable secondary structure. The investigation of the binding capability of the peptides to Collagen I was performed by surface plasmon resonance analyses, from which all but one of the peptides representing the inner surface of decorin showed binding affinity to collagen with values of dissociation constant between 2•10-7 M and 2.3•10-4 M. On the other hand, the peptides representative for the outer surface of decorin did not show any significant interaction to collagen. This information was then used to develop experimental demonstration for the binding capabilities of the peptides from the inner surface of decorin to collagen even when used in more complicated situations close to possible appications. With this purpose, the peptide (LRELHLNNN) which showed the highest binding affinity to collagen (2•10-7 M) was functionalized with an N-terminal triple bond in order to obtain a peptide dimer via copper(I)-catalyzed cycloaddition reaction with 4,4'-diazidostilbene-2,2'-disulfonic acid. Rheological measurements showed that the presence of the peptide dimer was able to enhance the elastic modulus (G') of a collagen gel from ~ 600 Pa (collagen alone) to ~ 2700 Pa (collagen and peptide dimer). Moreover, it was shown that the mechanical properties of a collagen gel can be tailored by using different molar ratios of peptide dimer respect to collagen. The same peptide, functionalized with the triple bond, was used to obtain a peptide-dye conjugate by coupling it with N-(5'-azidopentanoyl)-5-aminofluorescein. An aqueous solution (5 vol\% methanol) of the peptide dye conjugate was injected into a collagen and a hyaluronic acid (HA) gel and images of fluorescence detection showed that the diffusion of the peptide was slower in the collagen gel compared to the HA gel. The third experimental demonstration was gained using the peptide (LSELRLHNN) which showed the lower binding affinity (2.3•10-4 M) to collagen. This peptide was grafted to hyaluronic acid via EDC-chemistry, with a degree of functionalization of 7 ± 2 mol\% as calculated by 1H-NMR. The grafting was further confirmed by FTIR and TGA measurements, which showed that the onset of decomposition for the HA-g-peptide decreased by 10 °C compared to the native HA. Rheological measurements showed that the elastic modulus of a system based on collagen and HA-g-peptide increased by almost two order of magnitude (G' = 200 Pa) compared to a system based on collagen and HA (G' = 0.9 Pa). Overall, this study showed that the synthetic peptides, which were identified from decorin, can be applied as potential building blocks for biomimetic materials that function via biological recognition.},
  language  = {en}
}
@phdthesis{Seewald2011,
  author    = {Seewald, Gunter},
  title     = {Lineare und nichtlineare optische Untersuchungen am synthetischen Eumelanin und Entwicklung eines Kaskadenmodells},
  url       = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus-59967},
  school      = {Universit{\"a}t Potsdam},
  year      = {2011},
  abstract  = {Eumelanin ist ein Fluorophor mit teilweise recht ungew{\"o}hnlichen spektralen Eigenschaften. Unter anderem konnten in fr{\"u}heren Ver{\"o}ffentlichungen Unterschiede zwischen dem 1- und 2-photonen-angeregtem Fluoreszenzspektrum beobachtet werden, weshalb im nichtlinearen Anregungsfall ein schrittweiser Anregungsprozess vermutet wurde. Um diese und weitere optische Eigenschaften des Eumelanins besser zu verstehen, wurden in der vorliegenden Arbeit vielf{\"a}ltige messmethodische Ans{\"a}tze der linearen und nichtlinearen Optik an synthetischem Eumelanin in 0,1M NaOH verfolgt. Aus den Ergebnissen wurde ein Modell abgeleitet, welches die beobachteten photonischen Eigenschaften konsistent beschreibt. In diesem kaskadierten Zustandsmodell (Kaskaden-Modell) wird die aufgenommene Photonenenergie schrittweise von Anregungszust{\"a}nden hoher {\"U}bergangsenergien zu Anregungszust{\"a}nden niedrigerer {\"U}bergangsenergien transferiert. Messungen der transienten Absorption ergaben dominante Anteile mit kurzen Lebensdauern im ps-Bereich und ließen damit auf eine hohe Relaxationsgeschwindigkeit entlang der Kaskade schließen. Durch Untersuchung der nichtlinear angeregten Fluoreszenz von verschieden großen Eumelanin-Aggregaten konnte gezeigt werden, dass Unterschiede zwischen dem linear und nichtlinear angeregten Fluoreszenzspektrum nicht nur durch einen schrittweisen Anregungsprozess bei nichtlinearer Anregung sondern auch durch Unterschiede in den Verh{\"a}ltnissen der Quantenausbeuten zwischen kleinen und großen Aggregaten beim Wechsel von linearer zu nichtlinearer Anregung begr{\"u}ndet sein k{\"o}nnen. Durch Bestimmung des Anregungswirkungsquerschnitts und der Anregungspulsdauer-Abh{\"a}ngigkeit der nichtlinear angeregten Fluoreszenz von Eumelanin konnte jedoch ein schrittweiser 2-Photonen-Anregungsprozess {\"u}ber einen Zwischenzustand mit Lebendsdauern im ps-Bereich nachgewiesen werden.},
  language  = {de}
}
@phdthesis{Moesta2011,
  author    = {M{\"o}sta, Philipp},
  title     = {Novel aspects of the dynamics of binary black-hole mergers},
  url       = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus-59820},
  school      = {Universit{\"a}t Potsdam},
  year      = {2011},
  abstract  = {The inspiral and merger of two black holes is among the most exciting and extreme events in our universe. Being one of the loudest sources of gravitational waves, they provide a unique dynamical probe of strong-field general relativity and a fertile ground for the observation of fundamental physics. While the detection of gravitational waves alone will allow us to observe our universe through an entirely new window, combining the information obtained from both gravitational wave and electro-magnetic observations will allow us to gain even greater insight in some of the most exciting astrophysical phenomena. In addition, binary black-hole mergers serve as an intriguing tool to study the geometry of space-time itself. In this dissertation we study the merger process of binary black-holes in a variety of conditions. Our results show that asymmetries in the curvature distribution on the common apparent horizon are correlated to the linear momentum acquired by the merger remnant. We propose useful tools for the analysis of black holes in the dynamical and isolated horizon frameworks and shed light on how the final merger of apparent horizons proceeds after a common horizon has already formed. We connect mathematical theorems with data obtained from numerical simulations and provide a first glimpse on the behavior of these surfaces in situations not accessible to analytical tools. We study electro-magnetic counterparts of super-massive binary black-hole mergers with fully 3D general relativistic simulations of binary black-holes immersed both in a uniform magnetic field in vacuum and in a tenuous plasma. We find that while a direct detection of merger signatures with current electro-magnetic telescopes is unlikely, secondary emission, either by altering the accretion rate of the circumbinary disk or by synchrotron radiation from accelerated charges, may be detectable. We propose a novel approach to measure the electro-magnetic radiation in these simulations and find a non-collimated emission that dominates over the collimated one appearing in the form of dual jets associated with each of the black holes. Finally, we provide an optimized gravitational wave detection pipeline using phenomenological waveforms for signals from compact binary coalescence and show that by including spin effects in the waveform templates, the detection efficiency is drastically improved as well as the bias on recovered source parameters reduced. On the whole, this disseration provides evidence that a multi-messenger approach to binary black-hole merger observations provides an exciting prospect to understand these sources and, ultimately, our universe.},
  language  = {en}
}
@phdthesis{Gomolka2011,
  author    = {Gomolka, Johannes},
  title     = {Algorithmic Trading},
  publisher = {Universit{\"a}tsverlag Potsdam},
  address   = {Potsdam},
  isbn      = {978-3-86956-125-7},
  url       = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus-51009},
  school      = {Universit{\"a}t Potsdam},
  pages     = {383},
  year      = {2011},
  abstract  = {Die Elektronisierung der Finanzm{\"a}rkte ist in den letzten Jahren weit vorangeschritten. Praktisch jede B{\"o}rse verf{\"u}gt {\"u}ber ein elektronisches Handelssystem. In diesem Kontext beschreibt der Begriff Algorithmic Trading ein Ph{\"a}nomen, bei dem Computerprogramme den Menschen im Wertpapierhandel ersetzen. Sie helfen dabei Investmententscheidungen zu treffen oder Transaktionen durchzuf{\"u}hren. Algorithmic Trading selbst ist dabei nur eine unter vielen Innovationen, welche die Entwicklung des B{\"o}rsenhandels gepr{\"a}gt haben. Hier sind z.B. die Erfindung der Telegraphie, des Telefons, des FAX oder der elektronische Wertpapierabwicklung zu nennen. Die Frage ist heute nicht mehr, ob Computerprogramme im B{\"o}rsenhandel eingesetzt werden. Sondern die Frage ist, wo die Grenze zwischen vollautomatischem B{\"o}rsenhandel (durch Computer) und manuellem B{\"o}rsenhandel (von Menschen) verl{\"a}uft. Bei der Erforschung von Algorithmic Trading wird die Wissenschaft mit dem Problem konfrontiert, dass keinerlei Informationen {\"u}ber diese Computerprogramme zug{\"a}nglich sind. Die Idee dieser Dissertation bestand darin, dieses Problem zu umgehen und Informationen {\"u}ber Algorithmic Trading indirekt aus der Analyse von (Fonds-)Renditen zu extrahieren. Johannes Gomolka untersucht daher die Forschungsfrage, ob sich Aussagen {\"u}ber computergesteuerten Wertpapierhandel (kurz: Algorithmic Trading) aus der Analyse von (Fonds-)Renditen ziehen lassen. Zur Beantwortung dieser Forschungsfrage formuliert der Autor eine neue Definition von Algorithmic Trading und unterscheidet mit Buy-Side und Sell-Side Algorithmic Trading zwei grundlegende Funktionen der Computerprogramme (die Entscheidungs- und die Transaktionsunterst{\"u}tzung). F{\"u}r seine empirische Untersuchung greift Gomolka auf das Multifaktorenmodell zur Style-Analyse von Fung und Hsieh (1997) zur{\"u}ck. Mit Hilfe dieses Modells ist es m{\"o}glich, die Zeitreihen von Fondsrenditen in interpretierbare Grundbestandteile zu zerlegen und den einzelnen Regressionsfaktoren eine inhaltliche Bedeutung zuzuordnen. Die Ergebnisse dieser Dissertation zeigen, dass man mit Hilfe der Style-Analyse Aussagen {\"u}ber Algorithmic Trading aus der Analyse von (Fonds-)Renditen machen kann. Die Aussagen sind jedoch keiner technischen Natur, sondern auf die Analyse von Handelsstrategien (Investment-Styles) begrenzt.},
  language  = {de}
}