cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Seismic analysis of the RC integral bridges using performance-based design approach including soil structure interaction
Creators: name: Ashkani Zadeh, Kianosh
Publisher: name: University of British Columbia
Year: 2013

description: Bridges in high seismic risk zones are designed and built to withstand damage when subjected to earthquakes. However, there have been cases of bridge collapse due to design flaws around the world in the last few decades. To avoid failure and minimize seismic risk, collapse issue should be appropriately addressed in the next generation bridge design codes. One of the important subjects that needs to be addressed in bridge design codes is Soil-Structure Interaction (SSI), especially when the supporting soil is soft. In this research, SSI is incorporated within a performance-based engineering framework to assess the behaviour of RC integral bridges. 3-D nonlinear models of three types of integral bridges with different skew angles are built. For each bridge type, two archetype models are constructed with and without considering the effect of SSI. CALTRANS spring and multi-purpose dynamic Winkler models are employed to simulate the effect of soil in the SSI simulation. In this study, relative displacement and drift of the abutment backwall and pier columns are considered as engineering demand parameters (EDPs). Spectral acceleration of ground motions is chosen as the intensity measure (IM). Incremental dynamic analysis (IDA) is employed to determine the engineering demand parameters and probability of collapse using a set of 20 well-selected ground motions. Current study shows that for the integral abutment bridges considering soil structure interaction mostly demonstrate smaller relative displacement capacity/demand ratio. Therefore, neglecting SSI can result in overestimating relative displacement capacity of the structural components in this type of bridges. In addition, it is shown that SSI can cause an increase in ductility of the pier columns while it can cause a decrease in the ductility of the abutments. Collapse Margin Ratio (CMR) is considered here as a primary parameter to characterize the collapse safety of the structures. It is found that the probability of collapse of the SSI archetype models is higher than probability of collapse of their corresponding non-SSI models. Consequently, CMR value of the SSI archetype model is smaller than CMR value of its corresponding non-SSI models.
Characterization of microemulsions using small angle scattering techniques
Creators: name: Shukla, Anuj
Publisher: name: Universitäts- und Landesbibliothek Sachsen-Anhalt
Year: 2003
Subjects: Elektronische Publikation
Hochschulschrift
Zsfassung in dt. Sprache

description: Ein umfassendes Wissen über die physikalischen und chemischen Eigenschaften von Mikroemulsionen ist sowohl für zukünftige wissenschaftliche und technologische Anwendungen neuer Mikroemulsionen als auch für die Weiterentwicklung von Wirkstofftransportsystemen auf Basis bekannter Mikroemulsionen von höchster Bedeutung. Der Schwepunkt dieser Arbeit lag im Wesentlichen auf zwei Dingen: (1) die Untersuchung des Einflusses aller in der Mikroemulsion gelösten Bestandteile auf die Tropfengröße und die Stabilität, und (2), die Untersuchung der physikalischen Grundlagen für die Wechselwirkung der Mikroemulsionstropfen. Von experimenteller Seiten fanden drei Methoden Anwendung: SLS, DLS und SANS. Gerade die Kombination dieser drei Techniken hat sich als höchstgeeignet zur Beantwortung der gestellten Fragen erwiesen. Zum ersten Mal wurde mit Hilfe der Kontrastvariation die Diffusionsdynamik und die Tropfenwechselwirkung von Wasser/AOT/Alkan-Mikroemulsionen im Bereich hoher Konzentrationen untersucht, zusammen mit der Form- und Größenfluktuation der Tropfen. Die Ergebnisse hinsichtlich Tropfengröße, Polydispersität und Tropfenwechselwirkung waren selbskonsisten für alle drei verwendeten Techniken. Die an den Wasser/AOT/Alkan-Systemen gewonnen Informationen konnten direkt auf kompliziertere, pharmazeutisch relevantere Mikroemulsionen übertragen werden.
description: A greater knowledge of the physical and chemical properties of microemulsions is important to future scientific and industrial applications of new microemulsions, as well as for improvements as drug delivery system with currently available microemulsions. This thesis are attempt to study the microemulsions with two basic objectives: (I) to determine the effect of each constituent solubilized in ME on droplet size and stability, (II) to examine the physical basis of the interactions between the microemulsion droplets. The experimental approach has been based upon the use of three different scattering techniques, SLS, DLS and SANS. The combination of these scattering techniques is found an excellent one for the characterization of microemulsions unambigously. Diffusion dynamics and interdroplet interaction of Water/AOT/n-alkanes microemulsions in the large concentration range are studied for the first time, along with the droplet size growth, shape and size fluctuation of microemulsion droplets using contrast variation experiments. Self-consistent results are obtained for size, size polydispersity and interdroplet interaction of microemulsions droplets from three different scattering techniques. The results obtained from Water/AOT/n-alkanes systems are directly applied to examine the physical basis of the interdroplet interaction and behavior of each constituent solubilized in complicated microemulsions of pharmaceutical interests.
Large deviation approach to nonequilibrium systems
Creators: name: Touchette, Hugo
name: Harris, Rosemary J.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: The theory of large deviations has been applied successfully in the last 30 years or so to study the properties of equilibrium systems and to put the foundations of equilibrium statistical mechanics on a clearer and more rigorous footing. A similar approach has been followed more recently for nonequilibrium systems, especially in the context of interacting particle systems. We review here the basis of this approach, emphasizing the similarities and differences that exist between the application of large deviation theory for studying equilibrium systems on the one hand and nonequilibrium systems on the other. Of particular importance are the notions of macroscopic, hydrodynamic, and long-time limits, which are analogues of the equilibrium thermodynamic limit, and the notion of statistical ensembles which can be generalized to nonequilibrium systems. For the purpose of illustrating our discussion, we focus on applications to Markov processes, in particular to simple random walks.
description: 26 pages, draft book chapter [Klages, Rainer / Just, Wolfram / Jarzynski, Christopher (eds.), Nonequilibrium Statistical Physics of Small Systems: Fluctuation Relations and Beyond, 2013. Approx 350 pages with approx 100 figures. Hardcover. ISBN: 978-3-527-41094-1 (WILEY-VCH, Weinheim) http://www.wiley.com]. v2: Minor corrections
DEP Bulletin:Volume 39 Issue 1
Creators: name: No Name Supplied
Publisher: name: No Publisher Supplied
Year: 2015

description: The DEP bulletin is a semi-monthly publication of the New Jersey Department of Environmental Protection. It contains a list of construction permit applications recently filed or acted upon by the Department along with a calendar of events of interest, a schedule of public hearings, and Environmental Impact Statements acted upon during the period.
Von der Migration zur Intergration - literarische Konstruktionen von Kultur und Kulturkonflikt in der deutsch-türkischen Literatur nach '89
Creators: name: Elste, Nico
Publisher: name: Universitäts- und Landesbibliothek Sachsen-Anhalt
Year: 2012
Subjects: subject: Online-Publikation
subject: Hochschulschrift
subject: 800

description: Die vorliegende Dissertation befasst sich mit dem Verhältnis von interkultureller Literatur und gesellschaftspolitischem Diskurs. Wie, so lautet die zentrale Fragestellung, setzt sich speziell die deutsch-türkische Literatur mit dem Integrationsdiskurs und seiner sich seit der deutschen Wiedervereinigung radikalisierenden Sichtweise auf Migration auseinander? Gerade auf der Grundlage diskurstheoretischer Überlegungen erscheint diese Frage überaus spannend. Während der Diskurs verbindliche Positionen und Deutungen setzt – im politischen Diskurs wird Migration in ein politisch zu bewältigendes kulturelles Problem verwandelt –, besitzt die Literatur systematisch die Eigenschaft, sich dazu in ein freies Verhältnis zu begeben. Ohne selbst geistige Verbindlichkeiten zu schaffen, ist die ästhetische Reflexion in der Lage, die Grenzen des Diskurses wahrnehmbar zu machen, seine Hinsichten zu relativieren und damit die Gültigkeit seiner verbindlichen Ansichten zu hinterfragen. Ziel der Arbeit ist es daher, mit Hilfe eines textnahen Interpretationsverfahrens zu erfassen, ob und inwiefern die deutsch-türkische Literatur mit ihren ästhetischen Verfahren kritische oder gar diskursfremde Standpunkte beziehen. Untersucht wurden dafür sieben Romane deutschtürkischer Autoren, die zwischen 1991 und 2006 erschienen sind.
description: The dissertation at hand addresses the relationship between intercultural literature and sociopolitical discourse. The main question is how the German-Turkish literature in particular deals with the discourse on integration and the radicalizing view on migration after the German reunification. Especially against the background of discourse-theoretical considerations, this question is exceedingly fascinating. Whereas the discourse sets binding positions and interpretations – in the political discourse, migration is translated into a cultural problem that needs to be solved politically –, literature has the systematic characteristic to take up an open relationship towards the topic. Without creating mental obligations, esthetical reflection makes it possible to show constraints of the discourse, to put its aspects into perspective and, thereby, questioning the validity of its binding views. Hence, the goal of the paper is to determine if and to what extent German-Turkish literature with its esthetic methods takes stands that are critical or different to the discourse. This is to accomplish by means of textually close methods of interpretation. Seven novels of German-Turkish authors which were published between 1991 and 2006 were analyzed.
Canonical formulation of curvature squared action in the presence of lapse function
Creators: name: Sanyal, Abhik Kumar
name: Debnath, Subhra
name: Ruz, Soumendranath
Publisher: name: arXiv
Year: 2011
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Lapse function appears as Lagrange multiplier in Einstein-Hilbert action and its variation leads to the (0 0) equation of Einstein, which corresponds to the Hamiltonian constraint equation. In higher order theory of gravity the situation is not that simple. Here, we take up the curvature squared (R^2) action being supplemented by an appropriate boundary term in the background of Robertson-Walker minisuperspace metric, and show how to identify the constraint equation and formulate the Hamiltonian without detailed constraint analysis. The action is finally expressed in the canonical form $A = \int(\dot h_{ij} π^{ij} + \dot K_{ij}Π^{ij} - N{\mathcal H})dt \sim d^3 x$, where, the lapse function appears as Lagrange multiplier, once again. Canonical quantization yields Schrödinger like equation, with nice features. To show that our result is not an artifact of having reduced the theory to a measure zero subset of its configuration space, the role of the lapse function as Lagrangian multiplier has also been investigated in Bianchi-I, Kantowski-Sachs and Bianchi-III minisuperspace metrics. Classical and semiclassical solutions have finally been presented.
description: 24 pages, no figure
3D Solar Null Point Reconnection MHD Simulations
Creators: name: Baumann, G.
name: Galsgaard, K.
name: Nordlund, Å.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Plasma Physics (physics.plasm-ph)
subject: FOS: Physical sciences

description: Numerical MHD simulations of 3D reconnection events in the solar corona have improved enormously over the last few years, not only in resolution, but also in their complexity, enabling more and more realistic modeling. Various ways to obtain the initial magnetic field, different forms of solar atmospheric models as well as diverse driving speeds and patterns have been employed. This study considers differences between simulations with stratified and non-stratified solar atmospheres, addresses the influence of the driving speed on the plasma flow and energetics, and provides quantitative formulas for mapping electric fields and dissipation levels obtained in numerical simulations to the corresponding solar quantities. The simulations start out from a potential magnetic field containing a null-point, obtained from a Solar and Heliospheric Observatory (SOHO) magnetogram extrapolation approximately 8 hours before a C-class flare was observed. The magnetic field is stressed with a boundary motion pattern similar to - although simpler than - horizontal motions observed by SOHO during the period preceding the flare. The general behavior is nearly independent of the driving speed, and is also very similar in stratified and non-stratified models, provided only that the boundary motions are slow enough. The boundary motions cause a build-up of current sheets, mainly in the fan-plane of the magnetic null-point, but do not result in a flare-like energy release. The additional free energy required for the flare could have been partly present in non-potential form in the initial state, with subsequent additions from magnetic flux emergence or from components of the boundary motion that were not represented by the idealized driving pattern.
description: 24 pages, 14 figures, published in Solar Physics (Springer)
Dynamic R&D with Spillovers: Competition vs Cooperation
Creators: name: Cellini, Roberto
name: Lambertini, Luca
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2003
Subjects: SECS-P/08 Economia e gestione delle imprese

description: We investigate dynamic R&D for process innovation in a duopoly where firms may either undertake independent ventures or form a cartel for cost-reducing R&D investments. By comparing the profit and welfare perfomances of the two settings in steady state, we show that private and social incentives towards R&D cooperation coincide for all admissible levels of the technological spillovers characterising innovative activity. This results stems from smoothing the investment reffort over the time horizon of the game.
Simulation von Hochdruckextraktionsverfahren zur Entfernung organischer Verbindungen aus kontaminierten Böden
Creators: name: Buchwald, Andreas
Publisher: name: Universitäts- und Landesbibliothek Sachsen-Anhalt
Year: 2001
Subjects: Elektronische Publikation
Zsfassung in engl. Sprache

description: Im Rahmen dieser Arbeit wurde das Verfahren der Hochdruckextraktion als Bodensanierungsverfahren untersucht. Dabei wurde festgestellt, daß das Verfahren der Hochdruckextraktion ein leistungsfähiges Sanierungsverfahren ist, welches eine Vielzahl von Vorteilen gegenüber anderen Sanierungsverfahren besitzt. Um eine Überführung dieses innovativen Verfahrens in die Praxis zu unterstützen, muß eine Verfahrensbeurteilung und Kostenschätzung möglich sein. Um eine Verfahrensbeurteilung und Kostenschätzung für das Verfahren vornehmen zu können, bot sich eine Simulation des Verfahrens an. Die Simulation des Verfahrens hat den entscheidenden Vorteil, daß man schnell und kostengünstig zu Ergebnissen kommt. Um eine Simulation zu ermöglichen wurden in der Arbeit verschiedenste Elemente- und Zustandsmodelle für das Verfahren der Hochdruckextraktion zur Bodensanierung entwickelt oder modifiziert. Die in der Arbeit durchgeführten Untersuchungen führten zu dem Ergebnis, dass als Simulationsmethode eine stationäre Simulation ausreichend ist. In der Arbeit wurde die sequentiell modulare Methode (topologisch orientierte Fließschemasimulation) als spezielle stationäre Simulationsmethode verwendet. An Hand der in der Arbeit erzielten Ergebnisse ist zu ersehen, daß eine Simulation des Verfahrens möglich ist.
description: Subject of this work is the process of high pressure extraction as a treatment for soil restoration. The process of high pressure extraction turned out to be a powerful treatment, showing a number of advantages compared to other restoration treatments. In order to support the transfer of this innovative process into practice, a process evaluation and cost assessment are necessary. For this purpose a simulation of the process should be done. The simulation of the process has the striking advantage of leading quickly and inexpensively to results. In order to make a simulation practicable, in this work different element and state models for the process of high pressure extraction for soil restoration were developed or modified. The investigations carried out in this work led to the result that a statical simulation is a sufficient simulation method. In this work the sequential modular method (topologically oriented flow chart simulation) as a special statical simulation method was employed. By the results achieved, it can be seen that a simulation of the process is possible.
Flat bands with higher Chern number in pyrochlore slabs
Creators: name: Trescher, Maximilian
name: Bergholtz, Emil J.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: High Energy Physics - Theory (hep-th)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: A large number of recent works point to the emergence of intriguing analogs of fractional quantum Hall states in lattice models due to effective interactions in nearly flat bands with Chern number C=1. Here, we provide an intuitive and efficient construction of almost dispersionless bands with higher Chern numbers. Inspired by the physics of quantum Hall multilayers and pyrochlore-based transition-metal oxides, we study a tight-binding model describing spin-orbit coupled electrons in N parallel kagome layers connected by apical sites forming N-1 intermediate triangular layers (as in the pyrochlore lattice). For each N, we find finite regions in parameter space giving a virtually flat band with C=N. We analytically express the states within these topological bands in terms of single-layer states and thereby explicitly demonstrate that the C=N wave functions have an appealing structure in which layer index and translations in reciprocal space are intricately coupled. This provides a promising arena for new collective states of matter.
description: 5+3 pages. Title extended, as published
Would you like to enter first with a low-quality good?
Creators: name: Lambertini, Luca
name: Tedeschi, Piero
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2003
Subjects: SECS-P/01 Economia politica

description: Using a two-period duopoly model with vertical differentiation, we show that there exists a unique subgame perfect equilibrium where the first entrant supplies a lower quality and gains higher profits than the second entrant. We also prove that this entry sequence is also socially efficient.
Madiniella Chalumeau & Gruner 1976
Creators: name: Allsopp, Peter G.
name: Schoolmeesters, Paul
Publisher: name: Zenodo
Year: 2024
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Scarabaeidae
Madiniella

description: Madiniella Chalumeau & Gruner, 1976
[1 species].
Type species Madiniella christinae Chalumeau & Gruner, 1976, by original designation.
description: Published as part of Allsopp, Peter G. & Schoolmeesters, Paul, 2024, All genera of the world: Subfamilies Prototroginae, Cretoscarabaeinae, Dynamopodinae, Electrorubesopsinae, Phaenomeridinae, Orphninae, Allidiostomatinae, Aclopinae, Lichniinae, Melolonthinae, Oncerinae, Podolasiinae, Sericinae, Sericoidinae (Animalia: Arthropoda: Insecta: Coleoptera: Scarabaeidae), pp. 104-175 in Megataxa 12 (1) on page 130, DOI: 10.11646/megataxa.12.1.2, http://zenodo.org/record/14984437
Experimentation and Disappointment
Creators: name: Luppi, Barbara
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2003
Subjects: SECS-P/07 Economia aziendale

description: We depart from the classic setting of bandit problems by endowing the agent with a disappointment-elation utility function. The disutility of a loss is assumed to be greater than the elation associated with same-size gain, according to Kahneman-Tversky findings on the attitude of agents towards a change in wealth. We characterise the optimal experimentation strategy of an agent in a two-armed bandit problem setting with infinite horizon and we derive an existence theorem, specifying a condition on the disappointment aversion parameter. The model, solved in closed form in a one-armed bandit setting, shows that an agent who feels disappointment experiments more intensively than the agent characterised by the standard expected utility model, despite disappointment, but only if the degree of disappointment is under a certain threshold level. The threshold level depends both on the probability of rewards along the unknown projects relative to the expected number of trials and on the expected reward of the unknown project.
Untersuchungen zum Einfluss ausgewählter Parameter auf die Zugfestigkeit lasergeschweißter Edelstahldrähte
Creators: name: Zimmermann, Uta
Publisher: name: Universitäts- und Landesbibliothek Sachsen-Anhalt
Year: 2005
Subjects: subject: Elektronische Publikation
subject: Hochschulschrift
subject: Online-Publikation
subject: Zsfassung in engl. Sprache
subject: 617.6

description: In dieser Arbeit sollte der Einfluss der Laserparameter Spannung, Impulslänge und Fokus auf die Zugfestigkeit lasergeschweißter Chrom-Nickel-Drähte untersucht werden. Dafür wurden die lasergeschweißten Probekörper bezüglich ihrer Oberflächenqualität klassifiziert. Im Anschluss daran erfolgte die Bestimmung der Zugfestigkeit. Es konnte nachgewiesen werden, dass die Impulslänge sowohl die Oberfläche als auch die Zugfestigkeit der Schweißverbindung signifikant beeinflusst. Der Laserparameter Spannung hat signifikanten Einfluss auf die Lokalisation des Bruches während der Zugfestigkeitsprüfung. In mikroskopischen Gefügeuntersuchungen konnte bei optimaler Laserparameterwahl eine durchgängige Schweißnaht nachgewiesen werden. In allen untersuchten Proben zeigte sich eine Wärmeeinflusszone.
description: The aim of the present study was to evaluate the influence of the laser parameters tension, puls duration and focus on tensile strength of NiCr dental wires (Remanium®, Dentaurum, Ispringen, Germany). The wires were welded parallel. First, the specimens were categorised according to their surface quality and after that tensile tests were performed. Focusing on the pulse duration a significant influence coud be detected. The parameter "tension" had a significant influence on the localisation of the fracture. Microscopic analysis of the microstructure demonstrated a continuous weld seam when using optimal laser parameters. A heat-affected zone coud be observed in all specimens.
Plot evolution and character transformation in Shihou ji (The Lioness’s Roar) on the traditional Kunqu Stage
Creators: name: Qiu, Yanting
Publisher: name: University of British Columbia
Year: 2013

description: The traditional Chinese theatre of Kunqu, also known as Kunju, is a highly stylized and conventionalized theatre genre evolved from the melody of Kunshan, which emerged in 14th century and became the dominant style of private, commercial, and even court stages from the 16th to 18th centuries. Defined by its conventions and regarded as “the ancestor of hundreds of [Chinese] theatrical genres,” Kunqu became an audience-centered theatre, whereby audience’s preferences reshaped not only the characters but also the plots of plays on stage. Playscripts of Kunqu originated as chuanqi (southern drama), plays written by literati dramatists from the 15th to 18th centuries. Their arias follow very strict prosodic rules and follow the tonal patterns and rhyme schemes of classical poetry. Kunqu’s music also follows rules based on the tones of each character; such is the refinement of its lyrics that it was a nearly impossible task for the actors, who were mostly illiterate, to change the lines. However, Kunqu troupes still managed to convert the plots and characters of a play by changing the fundamental stage conventions rather than the texts. An example of such conversion is Shihou ji (The Lioness’s Roar), a play that has undergone an amazing transformation, from a shrew-taming chuanqi in thirty scenes written in the mid-Ming dynasty to a husband-taming play in four scenes popular in the mid-Qing. Regardless of the chuanqi playwright’s intention to inculcate the orthodox Confucian principle of the husband’s supremacy in the domestic sphere, the second half of his play, in which the wife gets tamed, was abandoned by actors. What survived on the Kunqu stage are four acts from the first half, in which the husband suffers punishments and gets convinced that following one’s wife is by all means a right thing to do. This thematic changeover was mainly achieved by the changing of role types, costumes, and make-up of the main characters. In addition, a few lines added as dialogue and some stage movements created by actors on stage also helped to give a new look to the play.
Sequential Entry in a Vertically Differentiated Duopoly
Creators: name: Lambertini, Luca
name: Tedeschi, Piero
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2003
Subjects: SECS-P/01 Economia politica

description: We analyse a model of vertical differentiation focusing on the trade-off between entering early and exploiting monopoly power with a low quality, versus waiting and enjoying a dominant market position with a superior product. We show that there exists a unique equilibrium where the leader enters with a lower quality than the follower, for low discount factors, for high costs of quality and for low consumers’ willingness to pay for quality.
Ground penetrating radar signal processing for landmine detection
Creators: name: Abujarad, Fawzy
Publisher: name: Universitätsbibliothek
Year: 2007
Subjects: Hochschulschrift
Online-Publikation

description: This thesis is concerned with detection logarithms of non-metallic anti-personnel (AP) land mines and the related signal processing using stepped-frequency ground penetrating radar (SF-GPR) technique. Modern land mines are essentially made out of plastic and ceramic materials. This makes their detection using GPR sensor almost impossible without proper signal processing. Many signal processing algorithms have been presented in the literature and successfully applied to GPR data for the detection of AP land mines. Therefore there is a need to compare these methods as regarding efficiency and hard- and software requirements. The thesis presents most common signal processing techniques used for SF-GPR based detection of buried objects. These techniques have been investigated, implemented and compared to each other as regarding their ability to separate the land mine and noise signals. The algorithm that performed best in these comparison is called Independent Component Analysis algorithm, which has demonstrated the ability to eliminate the GPR clutter and extract the target signal. Furthermore, combining the wavelet packet transform with the higher-order-statistics has shown to be very effective in the GPR signal processing. All experimental results presented in the thesis are based on real measured data obtained from an experimental SF-GPR system. The system has been developed and built at the Institute of Electronics, Signal Processing and Communications Engineering (IESK), University of Magdeburg, Magdeburg, Germany.
Price indices for artists - A proposal
Creators: name: Candela, Guido
name: Figini, Paolo
name: Scorcu, Antonello E.
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2003
Subjects: SECS-P/02 Politica economica

description: This paper proposes a price index for artists based on the ratio between the average market price and the average estimated price of the paintings sold by an artist each year, adjusted for market dynamics. We apply this methodology to a group of selected artists and schools drawing from a database including auction prices and estimated prices of paintings presented in auctions world wide between 1990 and 2001. A comparison with quality unadjusted and hedonic indices is also proposed.
Quality and Advertising in a Dynamic Duopoly
Creators: name: Colombo, Luca
name: Lambertini, Luca
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2003
Subjects: SECS-P/01 Economia politica

description: We investigate a differential duopoly game where each firm, through capital accumulation over time, may invest both in persuasive advertising campaigns aimed at increasing the willingness to pay of consumers and in an R&D process aimed at increasing the level of own product quality. In contrast with the acquired wisdom based on static models, the firm providing the market with the inferior variety may earn higher profits than the rival. More than this, we show that there exists a range of parameters wherein the low quality firm commands monopoly power.
The issue of time inconsistency revisited as an extended game
Creators: name: Cellini, Roberto
name: Lambertini, Luca
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2003
Subjects: SECS-P/01 Economia politica

description: We reformulate the monetary policy model of Barro and Gordon (1983a) by using an extended game with observable delay where the hierarchy of play between the central bank and the private sector is endogenous. This allows us to endogenise the institutional setup wherein the monetary policy game takes place. We show that positive inflation may be observed due to mixed strategies rather than time inconsistency.
title: Re-working the magic, 1978-2001 : a parallel study of six Scottish women writers of the late twentieth century : Margaret Elphinstone, Alison Fell, Sian Hayton, Ali Smith, Emma Tennant and Alice Thompson
Creators: name: Germanà, Monica
Publisher: name: University of Glasgow
Year: 2004

description: Re-Working the Magic is a parallel study of six Scottish women writers from the late twentieth century: Margaret Elphinstone, Alison Fell, Sian Hayton, Ali Smith, Emma Tennant and Alice Thompson. The thesis analyses the fiction produced by the authors between 1978 and 2001, the publication dates of Emma Tennant's The Bad Sister (1978) and Ali Smith's Hotel World (2001). The time-span selected for the present study focuses on a renewed interest in a traditional theme in Scottish literature: magic. Four tropes are identified as the main thematic vehicles of magic in the works of the six authors: ghosts; witches; doubles and magical journeys. These cultural archetypes all embody the relationship between the seen and the unseen, as in all the analysed texts magic is not a foreign concept, nor is it constricted to a parallel world. Rather than portraying marvellous otherworlds, in the analysed texts magic belongs to a world recognisable by both character and reader. The immanent aspect of magic accentuates its subversive nature: since it happens in a rationally ordered world, the irrational and inexplicable nature of magic creates tension and defies the order of the world it stems from. Facilitated by the employment of the four archetypal tropes, the texts engage with various traditions - literature, ballad, myth - the relationship with the past tradition is facilitated through several intertextual strategies including parody, pastiche and rewriting of traditional texts, myths and folk- and fairytales. While links to Scottish fantasy literature and folk tradition are stressed throughout the analysis of the six authors' works, the nature of this thesis questions boundaries of nationality and gender, in view of relevant postcolonialist and feminist literary theories. The Appendix, which includes interviews with five of the authors, endorses the investigation of questions about the meaning of Scottishness and female writing. The challenge to the patriarchal models offered by 'mainstream' tradition is a constant reminder of the need for flexibility when considering boundaries. While analysing the use of recurring magic tropes and non-realistic genres, this thesis will also approach specific issues about gender and nationality raised by the authors' texts and interviews.
Phase Space Geometry and Chaotic Attractors in Dissipative Nambu Mechanics
Creators: name: Roupas, Zacharias
Publisher: name: arXiv
Year: 2011
Subjects: subject: Chaotic Dynamics (nlin.CD)
subject: High Energy Physics - Theory (hep-th)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: Following the Nambu mechanics framework we demonstrate that the non-dissipative part of the Lorenz system can be generated by the intersection of two quadratic surfaces that form a doublet under the group SL(2,R). All manifolds are classified into four dinstict classes; parabolic, elliptical, cylindrical and hyperbolic. The Lorenz attractor is localized by a specific infinite set of one parameter family of these surfaces. The different classes correspond to different physical systems. The Lorenz system is identified as a charged rigid body in a uniform magnetic field with external torque and this system is generalized to give new strange attractors.
description: 22 pages, 13 figures
DEP Bulletin:Volume 39 Issue 2
Creators: name: No Name Supplied
Publisher: name: No Publisher Supplied
Year: 2015

description: The DEP bulletin is a semi-monthly publication of the New Jersey Department of Environmental Protection. It contains a list of construction permit applications recently filed or acted upon by the Department along with a calendar of events of interest, a schedule of public hearings, and Environmental Impact Statements acted upon during the period.
Comparative phylogeographic and population genetic analyses of three tropical pioneer tress, Macaranga winkleri, M. winkleriella and M. tanarius (Euphorbiaceae)
Creators: name: Baier, Christina
Publisher: name: Universitäts- und Landesbibliothek Sachsen-Anhalt
Year: 2011
Subjects: subject: Online-Publikation
subject: Hochschulschrift
subject: 576

description: Die Gattung Macaranga Thou. (Euphorbiaceae) umfasst ~260 paläotropisch verbreitete Arten, ca. 30 davon sind Myrmecophyten. In obligaten Myrmecopyhten können Pflanzen und Ameisen nicht ohne einander überleben. Deswegen wird für die Pflanzen eine begrenzte effektive Ausbreitung über Samen erwartet. Um die Ausbreitungsfähigkeit zu vergleichen wurden zwei Myrmecophyten, M. winkleri und M. winkleriella (Sektion Winklerianae) und die nicht-myrmecophytische M. tanarius (Tanarius group) untersucht. Dazu wurden drei nichtkodierende Chloroplastenregionen sequenziert. Für populationsgenetische Analysen wurden bis zu 11 nukleare Mikrosatellitenmarker pro Art entwickelt und genotypisiert. Die eingeschränkte Samenausbreitung von M. winkleri zeigt sich in der starken geographischen Struktur der Chloroplasten Haplotypen. Die biparental vererbten nuklearen Mikrosatelliten spiegeln Populationsstruktur auf einer größeren geographischen Skala wider, was zeigt, dass der Genfluss über Pollen weiter reicht als der über Samen. Für M. winkleriella, wurde für beide Markersysteme nur wenig genetische Diversität detektiert. Die phylogeographische Analyse von M. tanarius lässt entweder auf ein geringes Alter und eine schnelle Ausbreitung schließen, oder einen durchlaufenen „genetischen Flaschenhals“, ebenfalls gefolgt von schneller Ausbreitung. Im Gegensatz zu den anderen myrmecophytischen Macaranga Sektionen, besteht Winklerianae nur aus zwei Arten. Die geringe Zahl lässt sich durch einen besseren genetischen Austausch der M. winkleri Populationen erklären, wodurch allopatrische Artbildung bisher verhindert wurde.
Representations of some lattices into the group of analytic diffeomorphisms of the sphere $\mathbb{S}^2$
Creators: name: Déserti, Julie
Publisher: name: arXiv
Year: 2011
Subjects: subject: Group Theory (math.GR)
subject: Dynamical Systems (math.DS)
subject: FOS: Mathematics
subject: 58D05, 58B25

description: In \cite{Ghys} it is proved that any morphism from a subgroup of finite index of $\mathrm{SL}(n,\mathbb{Z})$ to the group of analytic diffeomorphisms of $\mathbb{S}^2$ has a finite image as soon as $n\geq 5$. The case $n=4$ is also claimed to follow along the same arguments; in fact this is not straightforward and this case indeed needs a modification of the argument. In this paper we recall the strategy for $n\geq 5$ and then focus on the case $n=4$.
MMIC non-linear transmission line frequency doubler
Creators: name: Hyvönen, L.
name: Närhi, T.
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 1998
Subjects: ING-INF/01 Elettronica

description: This paper describes the design and the predicted and measured results of a Q-band MMIC non­linear transmission line frequency doubler using a 0.7 micron GaAs MESFET MMIC process. The implemented non-linear transmission line is based on microstrip line sections loaded with Schottky diodes.
Maghrebotrogus Montreuil & Keith 2022
Creators: name: Allsopp, Peter G.
name: Schoolmeesters, Paul
Publisher: name: Zenodo
Year: 2024
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Scarabaeidae
Maghrebotrogus

description: Maghrebotrogus Montreuil & Keith, 2022
[12 species].
Type species Rhizotrogus scutellaris Lucas, 1847, by original designation.
description: Published as part of Allsopp, Peter G. & Schoolmeesters, Paul, 2024, All genera of the world: Subfamilies Prototroginae, Cretoscarabaeinae, Dynamopodinae, Electrorubesopsinae, Phaenomeridinae, Orphninae, Allidiostomatinae, Aclopinae, Lichniinae, Melolonthinae, Oncerinae, Podolasiinae, Sericinae, Sericoidinae (Animalia: Arthropoda: Insecta: Coleoptera: Scarabaeidae), pp. 104-175 in Megataxa 12 (1) on page 131, DOI: 10.11646/megataxa.12.1.2, http://zenodo.org/record/14984437
title: Additional value of dual layer spectral CT imaging in emergency conditions of head and neck, musculoskeletal system, chest and abdomen: A pictorial essay
Creators: name: Demirler Simsir, Begum
Publisher: name: European Congress of Radiology
Year: 2019
Subjects: subject: Ischaemia / Infarction
subject: Diagnostic procedure
subject: CT-Quantitative
subject: CT
subject: Emergency
subject: Abdomen

description: Learning objectives Background Findings and procedure details Conclusion Personal information References
description: Learning objectives: To demonstrate the use of dual layer spectral CT (computer tomography) technique and its applications in emergency settings and to discuss its added value in different organ...
A characterization of entanglement-assisted quantum low-density parity-check codes
Creators: name: Fujiwara, Yuichiro
name: Tonchev, Vladimir D.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Information Theory (cs.IT)
subject: Combinatorics (math.CO)
subject: Quantum Physics (quant-ph)
subject: FOS: Computer and information sciences
subject: FOS: Mathematics
subject: FOS: Physical sciences
subject: 094B

description: As in classical coding theory, quantum analogues of low-density parity-check (LDPC) codes have offered good error correction performance and low decoding complexity by employing the Calderbank-Shor-Steane (CSS) construction. However, special requirements in the quantum setting severely limit the structures such quantum codes can have. While the entanglement-assisted stabilizer formalism overcomes this limitation by exploiting maximally entangled states (ebits), excessive reliance on ebits is a substantial obstacle to implementation. This paper gives necessary and sufficient conditions for the existence of quantum LDPC codes which are obtainable from pairs of identical LDPC codes and consume only one ebit, and studies the spectrum of attainable code parameters.
description: 7 pages, no figures, final accepted version for publication in the IEEE Transactions on Information Theory
On the cubic interactions of massive and partially-massless higher spins in (A)dS
Creators: name: Joung, Euihun
name: Lopez, Luca
name: Taronna, Massimo
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Cubic interactions of massive and partially-massless totally-symmetric higher-spin fields in any constant-curvature background of dimension greater than three are investigated. Making use of the ambient-space formalism, the consistency condition for the traceless and transverse parts of the parity-invariant interactions is recast into a system of partial differential equations. The latter can be explicitly solved for given s_1-s_2-s_3 couplings and the 2-2-2 and 3-3-2 examples are provided in detail for general choices of the masses. On the other hand, the general solutions for the interactions involving massive and massless fields are expressed in a compact form as generating functions of all the consistent couplings. The Stückelberg formulation of the cubic interactions as well as their massless limits are also analyzed.
description: 42 pages, 2 tables, LaTex. Comments on two-derivative couplings involving partially-massless spin-2 fields added, typos corrected, references added. v2: final version to appear in JHEP. v3: formulae (3.4) and (3.9) corrected
An open science approach to standardizing T1 mapping
Creators: name: Stikov, Nikola
Publisher: name: Zenodo
Year: 2019
Subjects: MRI
T1 mapping
standardization
open science
reproducibility

description: This talk, given at the 22nd annual meeting of the Society for Cardiovascular Magnetic Resonance (SCMR), discusses the challenges of standardizing the field of T1 mapping, and proposes a way forward that focuses on open software and transparency in the post-processing of cardiac MRI data.
Uniform rectifiability and harmonic measure II: Poisson kernels in $L^p$ imply uniform rectifiability
Creators: name: Hofmann, Steve
name: Martell, José María
name: Uriarte-Tuero, Ignacio
Publisher: name: arXiv
Year: 2012
Subjects: subject: Classical Analysis and ODEs (math.CA)
subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics
subject: 31B05, 35J08, 35J25, 42B99, 42B25, 42B37

description: We present the converse to a higher dimensional, scale-invariant version of a classical theorem of F. and M. Riesz. More precisely, for $n\geq 2$, for an ADR domain $Ω\subset \re^{n+1}$ which satisfies the Harnack Chain condition plus an interior (but not exterior) Corkscrew condition, we show that absolute continuity of harmonic measure with respect to surface measure on $\partialΩ$, with scale invariant higher integrability of the Poisson kernel, is sufficient to imply uniformly rectifiable of $\partialΩ$.
AlGaAs/GaAs HFET power devices for J-band applications: performance dependence on gate recess geometry
Creators: name: Lanzieri, C.
name: Menozzi, R.
name: Dieci, D.
name: Peroni, M.
name: Cetronio, A.
name: Canali, C.
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 1998
Subjects: ING-INF/01 Elettronica

description: We show in this work that Alo.25Gao.75/GaAs power HFETs can offer substantial performance improvement at J-Band over conventional GaAs power MESFET's with the same geometry. Further performance enhancement is offered by a non-lithographic gate etching technique able to downscale the gate length to 0.3 urn. The paper will discuss the advantages and possible limitations of this gate scaling process; in addition, evidence will be given of the good hot-electron reliability of these devices.
The influence of the emitter orientation on the DC and low frequency noise characteristics of GalnP/GaAs HBTs
Creators: name: Borgarino, M.
name: Tartarin, J.G.
name: Plana, R.
name: Delage, S. L.
name: Graffeuil, J.
name: Fantini, F.
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 1998
Subjects: ING-INF/01 Elettronica

description: The present paper focuses on the influence of the emitter orientation on the electrical characteristics of GalnP/GaAs HBTs. The investigation was carried out by means of DC and Low Frequency Noise (LFN) measurements in the 250Hz-100kHz frequency range. Samples featuring a conventional Carbon-doped base and an Indium-codoped/Carbon-doped base were available. We demonstrated that the emitter orientation has an impact both on the DC and LFN characteristics of HBTs. This behaviour has been attributed to piezoelectric effects and surface recombinations in the extrinsic base region around the emitter perimeter .
Current helicity of active regions as a tracer of large-scale solar magnetic helicity
Creators: name: Zhang, H.
name: Moss, D.
name: Kleeorin, N.
name: Kuzanyan, K.
name: Rogachevskii, I.
name: Sokoloff, D.
name: Gao, Y.
name: Xu, H.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We demonstrate that the current helicity observed in solar active regions traces the magnetic helicity of the large-scale dynamo generated field. We use an advanced 2D mean-field dynamo model with dynamo saturation based on the evolution of the magnetic helicity and algebraic quenching. For comparison, we also studied a more basic 2D mean-field dynamo model with simple algebraic alpha quenching only. Using these numerical models we obtained butterfly diagrams both for the small-scale current helicity and also for the large-scale magnetic helicity, and compared them with the butterfly diagram for the current helicity in active regions obtained from observations. This comparison shows that the current helicity of active regions, as estimated by $-{\bf A \cdot B}$ evaluated at the depth from which the active region arises, resembles the observational data much better than the small-scale current helicity calculated directly from the helicity evolution equation. Here ${\bf B}$ and ${\bf A}$ are respectively the dynamo generated mean magnetic field and its vector potential. A theoretical interpretation of these results is given.
description: 11 pages, 5 figures, revised version
Power performance capability of metamorphic HEMT on GaAs substrate
Creators: name: Zaknoune, M.
name: Cordier, Y.
name: Bollaert, S.
name: Theron, D.
name: Crosnier, Y.
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 1998
Subjects: ING-INF/01 Elettronica

description: An In0.3Al0.7As/In0.3Ga0.7As metamorphic power High Electron Mobility Transistor (HEMT) grown on GaAs has been developed. This structure with 30% indium content presents several advantages over PM-HEMT on GaAs and LM-HEMT on InP. A 0.15-um gate length device with a single S doping exhibits a current gain cut off frequency Ft value of 125 GHz at Vds = 1.5 V, an extrinsic transconductance of 650 mS/mm and a current density of 750 mA/mm associated to a high breakdown voltage of-13 V. Power measurements performed at 60 GHz demonstrate a maximum output power of 240 mW/mm with 6.4 dB power gain and a power added efficiency (PAE) of 25%. These are the first power results ever reported on any metamorphic HEMT.
0.1um metamorphic In0.4Al0.6As/In0.4Ga0.6As HEMTs on GaAs substrate
Creators: name: Bollaert, S.
name: Cordier, Y.
name: Happy, H.
name: Zaknoune, M.
name: Lepilliet, S.
name: Cappy, A.
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 1998
Subjects: ING-INF/01 Elettronica

description: We report on the fabrication and characterization of 0.1 urn T-gate metamorphic InAlAs/InGaAs HEMTs on GaAs substrate with InAs mole fraction of 0.4. These devices present a good Schottky diode behavior, a drain current of 610mA/mm with an extrinsic transconductance of 680mS/mm. An intrinsic transconductance gm0 of 1150mS/mm and a current gain cutoff frequency fT of 195GHz are obtained. These good characteristics are similar to those obtained with lattice-matched HEMTs on InP substrate. Metamorphic HEMT is an attractive candidate for large scale and low cost MMIC production in the millimeter wave range.