cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Flux, Gaugino Condensation and Anti-Branes in Heterotic M-theory
Creators: name: Gray, James
name: Lukas, André
name: Ovrut, Burt
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We present the potential energy due to flux and gaugino condensation in heterotic M-theory compactifications with anti-branes in the vacuum. For reasons which we explain in detail, the contributions to the potential due to flux are not modified from those in supersymmetric contexts. The discussion of gaugino condensation is, however, changed by the presence of anti-branes. We show how a careful microscopic analysis of the system allows us to use standard results in supersymmetric gauge theory in describing such effects - despite the explicit supersymmetry breaking which is present. Not surprisingly, the significant effect of anti-branes on the threshold corrections to the gauge kinetic functions greatly alters the potential energy terms arising from gaugino condensation.
description: 40 pages, 1 figure
title: Design, implementation and control of microwave plasma gasification system for syngas production
Creators: name: Kabalan, B
Publisher: name: Liverpool John Moores University
Year: 2012

description: This thesis provides a solution for sustainable energy production. It applies the newest technologies of microwave plasma on a traditional method known as gasification. The simulation of this system has been achieved through a high frequency structure simulator to decide the best design of the structure. Microwave radiation at the frequency of 2.45 GHz has been applied to ionise argon gas and convert it into plasma. It has been proven that plasma can be self-initiated with an appropriate electric field applied. This microwave-induced plasma is the heart and soul of the Liverpool John Moores University's gasification system. It is coupled to a gasification chamber to gasify the feedstock placed inside and extract its energy as synthesis gas (i.e. hydrogen and carbon monoxide). Feedstock used in this study is carbon based material including pieces of wood and palm date seeds. This work is novel as no other work upto the date of this thesis completion has studied the different variables affecting plasma creation, plus the automation and the fully control of the microwave plama gasification system. Results reveal that after improvement of the microwave-induced plasma by automated control, it was possible to increase the synthesis gas production to 25.7% hydrogen and more than 57.6% carbon monoxide. This study has included the effects of some parameters on the plasma created, thus on its efficiency. These parameters are; the power of the microwave radiation, the reflected power from the system, the flow rate of argon and the pressure inside the gasification chamber. Other effects were taken into consideration throughout the project such as the study of the sample's moisture levels on the gas production and the use of helium gas instead of argon for plasma creation. The system has proved the benefits of applying microwave-induced plasma technology on the gasification technology. These benefits can be summarised as the reduction of the input power needed for the procedure from the range of megawatts to 1 kilowatt, and the flexibility achieved through controlling the plasma jet for an improved process.
Der Transkriptionsfaktor Sox10 kontrolliert in Schwann-Zellen die Ausbildung von Ranvier-Schnürringen
Creators: name: Saur, Anna-Lena
Publisher: name: Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU)
Year: 2023

description: Sowohl im zentralen Nervensystem als auch im peripheren Nervensystem spielt der Transkriptionsfaktor (TF) Sox10 (Sry HMG-Box 10) eine bedeutende Rolle bei der Regulation der Genexpression von Myelin-bildenden Gliazellen. Sox10-gesteuerte Gene kodieren beispielsweise für Proteine der Myelinscheide oder für Stoffwechselenzyme. Die vorliegenden Studien dienten der Identifizierung weiterer Gene, deren Expression in Schwann-Zellen durch Sox10 reguliert wird. Hierbei erfolgte eine genauere Untersuchung der Gene, die bei der Ausbildung des Ranvier-Schnürringes und des benachbarten Paranodiums beteiligt sind. Bei den Genen für Gliomedin (Gldn), Neurofascin (Nfasc) und dem Neuronal cell adhesion molecule (Nrcam) sollte, für den Fall einer Expressionssteuerung durch Sox10, außerdem das Zusammenspiel von Sox10 mit dem TF Krox20 (auch Egr2, early growth response 2), einem weiteren zentralen Regulator der Myelinisierung im PNS, auf molekularer Ebene im Detail analysiert werden.
A Hierarchical and Modular Radio Resource Management Architecture for 5G and Beyond
Creators: name: Dryjański, Marcin
name: Kliks, Adrian
Publisher: name: arXiv
Year: 2021
Subjects: subject: Networking and Internet Architecture (cs.NI)
subject: FOS: Computer and information sciences

description: The evolution of mobile wireless systems into Heterogeneous Networks, along with the introduction of the 5th Generation (5G) systems, significantly increased the complexity of radio resource management. The current mobile networks consist of a multitude of spectrum bands, use cases, system features, licensing schemes, radio technologies, and network layers. Additionally, the traffic demand is uneven in terms of spatial and temporal domains, calling for a dynamic approach to radio resource allocation. To cope with these complexities, a generic and adaptive scheme is required for the efficient operation of Heterogeneous Networks. This article proposes to use a hierarchical and modular framework as an approach to cover the mentioned challenges and to generalize this scheme to different network layers. The proposed management solution is based on three main components: specialized solutions for individual requirements, exposed to the coordination layer, through abstraction middleware. In this approach, new items can be added as plugins.
description: 8 pages, 6 figures
Sensitivity to new physics: a_e vs. a_mu
Creators: name: Chizhov, Mihail V.
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: At present it is generally believed that ``new physics'' effects contribute to leptonic anomalous magnetic moment, a_l, via quantum loops only and they are proportional to the squared lepton mass, (m_l)^2. An alternative mechanism for a contribution by new physics is proposed. It occurs at the tree level and exhibits a linear rather than quadratic dependence on m_l. This leads to a much larger sensitivity of a_e to the new physics than was expected so far.
description: 4 pages, 2 figures
title: Olympia, Griechenland
Creators: name: Senff, Reinhard
Publisher: name: Deutsches Archäologisches Institut
Year: 2014

description: e-Forschungsberichte, Faszikel 1 (2014)
description: The excavations in Olympia currently focus on the area south of the stadium, where traces of temporary use during the athletic games have come to light as well as remains of a potters’ workshop of the Classical Period. A large number of metal finds, especially parts of weapons could be retrieved from refilled temporary wells. Smaller sondages around the stadium helped to solve problems of date and function of other structures. Architectural reconstructions were carried out in the opisthodomus of the temple of Zeus and the northern column of the ‚Ptolemaic Monument‘ in front of the Stoa of Echos.
Longitudinal SDW order in a quasi-1D Ising-like quantum antiferromagnet
Creators: name: Kimura, S.
name: Matsuda, M.
name: Masuda, T.
name: Hondo, S.
name: Kaneko, K.
name: Metoki, N.
name: Hagiwara, M.
name: Takeuchi, T.
name: Okunishi, K.
name: He, Z.
name: Kindo, K.
name: Taniyama, T.
name: Itoh, M.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: From neutron diffraction measurements on a quasi-1D Ising-like Co$^{\rm 2+}$ spin compound BaCo$_{\rm 2}$V$_{\rm 2}$O$_{\rm 8}$, we observed an appearance of a novel type of incommensurate ordering in magnetic fields. This ordering is essentially different from the N{\' e}el-type ordering, which is expected for the classical system, and is caused by quantum fluctuation inherent in the quantum spin chain. A Tomonaga-Luttinger liquid (TLL) nature characteristic of the gapless quantum 1D system is responsible for the realization of the incommensurate ordering.
description: 4pages, 4figure
The design and implementation of the Cambridge ring protocols
Creators: name: Wong, Julian Hong Pak
Publisher: name: University of British Columbia
Year: 2010

description: Protocol implementation is characterized by various issues such as concurrency, time-critical responses, and asynchronous events. Such issues would be easier to resolve if the underlying operating system provides a hospitable environment that include an efficient interprocess communication facility. Most operating systems, however, do not provide such an environment. This thesis presents an implementation and discusses what has been learned -in implementing the Byte Stream and the Basic Block protocols of the Cambridge Ring on a LSI 11/23 computer running the Unix.V7 operating system.
An analytical model for the Maxwell radiation field in an axially symmetric galaxy
Creators: name: Arminjon, Mayeul
Publisher: name: arXiv
Year: 2021
Subjects: subject: General Physics (physics.gen-ph)
subject: FOS: Physical sciences

description: The Maxwell radiation field is an essential physical characteristic of a galaxy. Here, an analytical model is built to simulate that field in an axisymmetric galaxy. This analytical model is based on an explicit representation for axisymmetric source-free Maxwell fields. In a previous work, the general applicability of this representation has been proved. The model is adjusted by fitting to it the sum of spherical radiations emitted by the composing "stars". The huge ratio distance/wavelength needs to implement a numerical precision better than the quadruple precision. The model passes a validation test based on a spherically symmetric solution. The results for a set of "stars" representative of a disk galaxy indicate that the field is highest near to the disk axis, and there the axial component of ${\bf E}$ dominates over the radial one. This work will allow us in the future to check if the interaction energy predicted by an alternative theory of gravitation might be a component of dark matter. {\bf Keywords:} Disk galaxy; Maxwell equations; axial symmetry; exact solutions; numerical model; dark matter.
description: 33 pages, 9 figures
La salvaguardia del paesaggio rurale in Campania. L’attività della Regione
Creators: name: Ranauro, Domenico Antonio
Publisher: name: Territorio della Ricerca su Insediamenti e Ambiente. Rivista internazionale di cultura urbanistica
Year: 2008

description: Territorio della Ricerca su Insediamenti e Ambiente. Rivista internazionale di cultura urbanistica, No 2 (2008): The landscape in history, art, culture and urban planning; theoretical premises and experience
Solitons near avoided mode crossing in $χ^{(2)}$ nanowaveguides
Creators: name: Rowe, William R.
name: Gorbach, Andrey V.
name: Skryabin, Dmitry V.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Optics (physics.optics)
subject: Pattern Formation and Solitons (nlin.PS)
subject: FOS: Physical sciences

description: We present a model for $χ^{(2)}$ waveguides accounting for three modes, two of which make an avoided crossing at the second harmonic wavelength. We introduce two linearly coupled pure modes and adjust the coupling to replicate the waveguide dispersion near the avoided crossing. Analysis of the nonlinear system reveals continuous wave (CW) solutions across much of the parameter-space and prevalence of its modulational instability. We also predict the existence of the avoided-crossing solitons, and study peculiarities of their dynamics and spectral properties, which include formation of a pedestal in the pulse tails and associated pronounced spectral peaks. Mapping these solitons onto the linear dispersion diagrams, we make connections between their existence and CW existence and stability. We also simulate the two-color soliton generation from a single frequency pump pulse to back up its formation and stability properties.
description: 10 pages, 6 figures
A Connection between Star Formation in Nuclear Rings and their Host Galaxies
Creators: name: Mazzuca, Lisa M.
name: Knapen, Johan H.
name: Veilleux, Sylvain
name: Regan, Michael W.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present results from a photometric H-alpha survey of 22 nuclear rings, aiming to provide insight into their star formation properties, including age distribution, dynamical timescales, star formation rates, and galactic bar influence. We find a clear relationship between the position angles and ellipticities of the rings and those of their host galaxies, which indicates the rings are in the same plane as the disk and circular. We use population synthesis models to estimate ages of each H-alpha emitting HII region, which range from 1 Myr to 10 Myrs throughout the rings. We find that approximately half of the rings contain azimuthal age gradients that encompass at least 25% of the ring, although there is no apparent relationship between the presence or absence of age gradients and the morphology of the rings or their host galaxies. NGC1343, NGC1530, and NGC4321 show clear bipolar age gradients, where the youngest HII regions are located near the two contact points of the bar and ring. We speculate in these cases that the gradients are related to an increased mass inflow rate and/or an overall higher gas density in the ring, which would allow for massive star formation to occur on short timescales, after which the galactic rotation would transport the HII regions around the ring as they age. Two-thirds of the barred galaxies show correlation between the locations of the youngest HII region(s) in the ring and the location of the contact points, which is consistent with predictions from numerical modeling.
description: 23 pages, 10 figures (7 color), 23 tables, accepted for publication in ApJS (Feb 08); NASA-GSFC, IAC, University of Maryland, STScI
Iniziative accademiche
Creators: name: Vari, Autori
Publisher: name: Territorio della Ricerca su Insediamenti e Ambiente. Rivista internazionale di cultura urbanistica
Year: 2008

description: Territorio della Ricerca su Insediamenti e Ambiente. Rivista internazionale di cultura urbanistica, No 2 (2008): The landscape in history, art, culture and urban planning; theoretical premises and experience
title: Röm. Provinz Baetica, Spanien. Arbeiten zum Corpus Inscriptionum Latinarum II
Creators: name: Rothenhöfer, Peter
Publisher: name: Deutsches Archäologisches Institut
Year: 2014

description: e-Forschungsberichte, Faszikel 1 (2014)
description: The current work focuses on the ancient Latin inscriptions from the province of Baetica. Actually, the manuscript of the volume Hispalensis North, i.e. the northern part of the judicial district of Hispalis (Seville), is prepared for printing. It includes about 900 inscriptions, about four and a half times more entries for this area than in the first volumes edited by Emil Hübner. These 900 inscriptions spread over 27 ancient administrative units, which usually are cities with their territories, with the exception of an imperial mining district which existed around the rich deposits of the Iberian Pyrite Belt in the north of the province of Huelva. The increase in inscriptions makes it possible to draw a noticeably sharper picture of the historical geography of the Western part of the Roman province of Baetica. This mainly concerns the localization of cities and the territorial structure associated with it, but also our knowledge of the judicial status of cities. Moreover, in 2013 work intensified on inscriptions from the south of the judicial district of Hispalis. Furthermore, first complexes from the western part of the conventus Gaditanus are in preparation.
Data-driven Full-waveform Inversion Surrogate using Conditional Generative Adversarial Networks
Creators: name: Marcus, Saraiva
name: Avelino, Forechi
name: Jorcy, de Oliveira Neto
name: Antonio, DelRey
name: Thomas, Rauber
Publisher: name: arXiv
Year: 2021
Subjects: subject: Machine Learning (cs.LG)
subject: Signal Processing (eess.SP)
subject: Geophysics (physics.geo-ph)
subject: FOS: Computer and information sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Physical sciences

description: In the Oil and Gas industry, estimating a subsurface velocity field is an essential step in seismic processing, reservoir characterization, and hydrocarbon volume calculation. Full-waveform inversion (FWI) velocity modeling is an iterative advanced technique that provides an accurate and detailed velocity field model, although at a very high computational cost due to the physics-based numerical simulations required at each FWI iteration. In this study, we propose a method of generating velocity field models, as detailed as those obtained through FWI, using a conditional generative adversarial network (cGAN) with multiple inputs. The primary motivation of this approach is to circumvent the extremely high cost of full-waveform inversion velocity modeling. Real-world data were used to train and test the proposed network architecture, and three evaluation metrics (percent error, structural similarity index measure, and visual analysis) were adopted as quality criteria. Based on these metrics, the results evaluated upon the test set suggest that the GAN was able to accurately match real FWI generated outputs, enabling it to extract from input data the main geological structures and lateral velocity variations. Experimental results indicate that the proposed method, when deployed, has the potential to increase the speed of geophysical reservoir characterization processes, saving on time and computational resources.
General relativistic treatment of LISA optical links
Creators: name: Dhurandhar, S. V.
name: Vinet, J-Y.
name: Nayak, K. Rajesh
Publisher: name: arXiv
Year: 2008
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: LISA is a joint space mission of the NASA and the ESA for detecting low frequency gravitational waves in the band $10^{-5} - 1$ Hz. In order to attain the requisite sensitivity for LISA, the laser frequency noise must be suppressed below the other secondary noises such as the optical path noise, acceleration noise etc. This is achieved by combining time-delayed data for which precise knowledge of time-delays is required. The gravitational field, mainly that of the Sun and the motion of LISA affect the time-delays and the optical links. Further, the effect of the gravitational field of the Earth on the orbits of spacecraft is included. This leads to additional flexing over and above that of the Sun. We have written a numerical code which computes the optical links, that is, the time-delays with great accuracy $\sim 10^{-2}$ metres - more than what is required for time delay interferometry (TDI) - for most of the orbit and with sufficient accuracy within $\sim 10$ metres for an integrated time window of about six days, when one of the arms tends to be tangent to the orbit. Our analysis of the optical links is fully general relativistic and the numerical code takes into account effects such as the Sagnac, Shapiro delay, etc.. We show that with the deemed parameters in the design of LISA, there are symmetries inherent in the configuration of LISA and in the physics, which may be used effectively to suppress the residual laser noise in the modified first generation TDI. We demonstrate our results for some important TDI variables.
title: Cucuteni-Tripolje, Ukraine. Herausbildung hierarchisch gegliederter Siedlungslandschaften im späten 5. und 4. Jt. v. Chr.
Creators: name: Rassmann, Knut
Publisher: name: Deutsches Archäologisches Institut
Year: 2014

description: e-Forschungsberichte, Faszikel 1 (2014)
description: The emergence of a large settlement in the 4th millennium BC in Eastern Europe marks a new level of ancient European sedentary life. Large-scale geomagnetic prospection revealed clear settlement structures of hundreds of houses, regularly arranged in space. This appears to have also mirrored the social structures which existed within the settlements. The dimension of the settlements requires new fieldwork concepts. Based on the details of architectural features like houses, kilns and storage pits revealed by these prospections, small scale excavation in different areas of the settlement were undertaken to detect differences and similarities between house groups. The excavations were multidisciplinarily founded to reconstruct the process of the rise and decline of settlements in the context of human-environment interactions.
Persistence in the zero-temperature dynamics of the $Q$-states Potts model on undirected-directed Barabási-Albert networks and Erdös-Rényi random graphs
Creators: name: Fernandes, F. P.
name: Lima, F. W. S.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: FOS: Physical sciences

description: The zero-temperature Glauber dynamics is used to investigate the persistence probability $P(t)$ in the Potts model with $Q=3,4,5,7,9,12,24,64, 128$, $256, 512, 1024,4096,16384 $,..., $2^{30}$ states on {\it directed} and {\it undirected} Barabási-Albert networks and Erdös-Rényi random graphs. In this model it is found that $P(t)$ decays exponentially to zero in short times for {\it directed} and {\it undirected} Erdös-Rényi random graphs. For {\it directed} and {\it undirected} Barabási-Albert networks, in contrast it decays exponentially to a constant value for long times, i.e, $P(\infty)$ is different from zero for all $Q$ values (here studied) from $Q=3,4,5,..., 2^{30}$; this shows "blocking" for all these $Q$ values. Except that for $Q=2^{30}$ in the {\it undirected} case $P(t)$ tends exponentially to zero; this could be just a finite-size effect since in the other "blocking" cases you may have only a few unchanged spins.
description: 14 pages, 8 figures for IJMC
Come garantire la qualità nelle trasformazioni urbane: il ruolo degli Enti pubblici nei concorsi di progettazione
Creators: name: Votta, Remo
name: Cappiello, Viviana
Publisher: name: Territorio della Ricerca su Insediamenti e Ambiente. Rivista internazionale di cultura urbanistica
Year: 2008

description: Territorio della Ricerca su Insediamenti e Ambiente. Rivista internazionale di cultura urbanistica, No 2 (2008): The landscape in history, art, culture and urban planning; theoretical premises and experience
Probabilistic automata on infinite words: Decidability and undecidability results
Creators: name: Chatterjee, Krishnendu
Publisher: name: IST Austria
Year: 2009
Subjects: 000 Computer science, knowledge & general works

description: We consider probabilistic automata on infinite words with acceptance defined by safety, reachability, Büchi, coBüchi and limit-average conditions. We consider quantitative and qualitative decision problems. We present extensions and adaptations of proofs of [GO09] and present a precise characterization of the decidability and undecidability frontier of the quantitative and qualitative decision problems.
title: Llanos de Mojos, Bolivien. Siedlungsplätze im nördlichen Tiefland Boliviens
Creators: name: Prümers, Heiko
Publisher: name: Deutsches Archäologisches Institut
Year: 2014

description: e-Forschungsberichte, Faszikel 1 (2014)
description: The Bolivian-German project in the Llanos de Mojos is designed to shed new light on prehispanic settlements in the region. During the last years the main focus has been on mapping and excavation of settlements associated with complex ditch-systems in the northeastern part of the Llanos de Mojos. At Jasiaquiri, a small village near the town of Baures, limited excavations revealed the existence of a hitherto unknown archaeological culture.
The Fractal Nature of Clouds in Global Storm-Resolving Models
Creators: name: Christensen, Hannah M.
name: Driver, Oliver G. A.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Atmospheric and Oceanic Physics (physics.ao-ph)
subject: Adaptation and Self-Organizing Systems (nlin.AO)
subject: FOS: Physical sciences

description: Clouds in observations are fractals: they show self-similarity across scales ranging from one to 1000 km. This includes individual storms and large-scale cloud structures typical of organised convection. It is not known whether global storm-resolving models reproduce the observed fractal scaling laws for clouds and organised convection. We compute the fractal dimension of clouds using Himawari satellite data and compare this to global storm-resolving model simulations completed as part of the DYAMOND intercomparison project. We find cloud fields in these simulations are indeed fractal, and reproduce the observed fractal dimension to within 10\%. We find the fractal dimension is sensitive to the choice of boundary layer parametrisation scheme used in each model simulation, and not to the convection parametrisation as might have been expected. The fractal dimension is independent of cloud area distributions, providing a complementary metric to assess the multi-scale structure of convection and convective organisation in model simulations.
description: Submitted to Geophysical Research Letters
Fuga dalla città, verso paesaggi ludici immaginati
Creators: name: Dall'Ara, Enrica
Publisher: name: Territorio della Ricerca su Insediamenti e Ambiente. Rivista internazionale di cultura urbanistica
Year: 2008

description: Territorio della Ricerca su Insediamenti e Ambiente. Rivista internazionale di cultura urbanistica, No 2 (2008): The landscape in history, art, culture and urban planning; theoretical premises and experience
title: Malaita, Salomonen Inseln. Besiedlungsgeschichte Melanesiens – Vorgeschichte der Salomonen Inseln
Creators: name: Moser, Johannes
Publisher: name: Deutsches Archäologisches Institut
Year: 2014

description: e-Forschungsberichte, Faszikel 1 (2014)
description: The current research project is designed to focus on archaeological investigations on the pre- and protohistory of the Solomon Islands. In 2012 field-work has been carried out at the flint-knapping open-air site “Apunirereha” in south-eastern Malaita. The excavation yielded a huge amount of lithic artefacts in all stages of their production process. The most prominent component of the implements consists of varying stone adzes, side- and end scrapers. They are classifying “Apunirereha” as a centre for manufacturing of lithic end-products which were subsequently distributed as trading goods.
title: Sahel, Senegal / Niger. Siedlungs- und Wirtschaftsgeschichte in der Eisenzeit und dem Frühmittelalter im Sahel Westafrikas
Creators: name: Magnavita, Sonja
Publisher: name: Deutsches Archäologisches Institut
Year: 2014

description: e-Forschungsberichte, Faszikel 1 (2014)
description: Recent field research in Central Senegal shows that, analogue to South-West Niger, the visible wealth of some Sahelian groups during the Iron Age and early Middle Ages cannot be solely attributed to agricultural surpluses. Those investigations show that both regions imported copper alloys from northern Africa and used them for demonstrating socio-economic status. In contrast to the Niger bend, gold likewise rose to a visible status symbol in Senegal. Since the Central Senegal has no own gold deposits, a connection to distant south-eastern regions must have existed.
Keldysh Ginzburg-Landau action of fluctuating superconductors
Creators: name: Levchenko, Alex
name: Kamenev, Alex
Publisher: name: arXiv
Year: 2007
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We derive Ginzburg-Landau action by systematically integrating out electronic degrees of freedom in the framework of the Keldysh nonlinear sigma-model of disordered superconductors. The resulting Ginzburg-Landau functional contains a nonlocal $Δ$-dependent contribution to the diffusion constant, which leads, for example, to Maki-Thompson corrections. It also exhibits an anomalous Gor'kov-Eliashberg coupling between $Δ$ and the scalar potential, as well as a peculiar nonlocal nonlinear term. The action is gauge invariant and satisfies the fluctuation dissipation theorem. It may be employed e.g. for calculation of higher moments of the current fluctuations.
description: 16 pages, 2 figures
Performance of the Cherenkov Telescope Array in the presence of clouds
Creators: name: Pecimotika, Mario
name: Adamczyk, Katarzyna
name: Prester, Dijana Dominis
name: Gueta, Orel
name: Hrupec, Dario
name: Maier, Gernot
name: Mićanović, Saša
name: Pavletić, Lovro
name: Sitarek, Julian
name: Sobczyńska, Dorota
name: Szanecki, Michał
Publisher: name: arXiv
Year: 2021
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: The Cherenkov Telescope Array (CTA) is the future ground-based observatory for gamma-ray astronomy at very high energies. The atmosphere is an integral part of every Cherenkov telescope. Different atmospheric conditions, such as clouds, can reduce the fraction of Cherenkov photons produced in air showers that reach ground-based telescopes, which may affect the performance. Decreased sensitivity of the telescopes may lead to misconstructed energies and spectra. This study presents the impact of various atmospheric conditions on CTA performance. The atmospheric transmission in a cloudy atmosphere in the wavelength range from 203 nm to 1000 nm was simulated for different cloud bases and different optical depths using the MODerate resolution atmospheric TRANsmission (MODTRAN) code. MODTRAN output files were used as inputs for generic Monte Carlo simulations. The analysis was performed using the MAGIC Analysis and Reconstruction Software (MARS) adapted for CTA. As expected, the effects of clouds are most evident at low energies, near the energy threshold. Even in the presence of dense clouds, high-energy gamma rays may still trigger the telescopes if the first interaction occurs lower in the atmosphere, below the cloud base. A method to analyze very high-energy data obtained in the presence of clouds is presented. The systematic uncertainties of the method are evaluated. These studies help to gain more precise knowledge about the CTA response to cloudy conditions and give insights on how to proceed with data obtained in such conditions. This may prove crucial for alert-based observations and time-critical studies of transient phenomena.
title: Torbulok, Tadschikistan. Ein neuentdecktes Heiligtum im hellenistischen Osten
Creators: name: Lindström, Gunvor
Publisher: name: Deutsches Archäologisches Institut
Year: 2014

description: e-Forschungsberichte, Faszikel 1 (2014)
description: In 2008 two large vessels from Torbulok entered the collection of the National Museum of Antiquities in Dushanbe. They could be identified as a perirrhanterion (vessel for ritual purification) and a second cult vessel. Given this the findspot was identified as an ancient sanctuary. Excavations and a survey started in 2013. The archaeological investigation will put another sanctuary on the map of religious sites of the Hellenistic Far East.
Unparticle signals with a few particles
Creators: name: Perez-Victoria, Manuel
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We use Pade approximants to systematically approximate scalar unparticle propagators and their associated phase factors by a finite number of ordinary particles. This is possible for conformal dimensions 12 if we add local terms. A small number of particles can, in some cases, mimic unparticle signals. We also discuss how the approximants capture basic unparticle properties.
description: 10 pages, 8 figures. References added. Modified title and minor changes to match published version
title: Erbil, Irak. Die osmanischen Qaisariya-Gebäude im Basar
Creators: name: Kurapkat, Dietmar
Publisher: name: Deutsches Archäologisches Institut
Year: 2014

description: e-Forschungsberichte, Faszikel 1 (2014)
description: The city of Erbil is the political and economic centre of the autonomous region of Kurdistan in northern Iraq with a cultural heritage stretching back thousands of years. With support from the Cultural Preservation Programme of Germany‘s Federal Foreign Office an interdisciplinary team of art historians, architects, engineers, archaeologists, restorers and preservation experts is working on a scientifically sound restoration plan for two late Ottoman buildings, so-called Qaisariyas, in the Bazaar of Erbil.
Strade: un’occasione per progettare luoghi e paesaggi
Creators: name: Morelli, Emanuela
Publisher: name: Territorio della Ricerca su Insediamenti e Ambiente. Rivista internazionale di cultura urbanistica
Year: 2008

description: Territorio della Ricerca su Insediamenti e Ambiente. Rivista internazionale di cultura urbanistica, No 2 (2008): The landscape in history, art, culture and urban planning; theoretical premises and experience
Strategie e strumenti per la valorizzazione del paesaggio costiero
Creators: name: Foresta, Sante
Publisher: name: Territorio della Ricerca su Insediamenti e Ambiente. Rivista internazionale di cultura urbanistica
Year: 2008

description: Territorio della Ricerca su Insediamenti e Ambiente. Rivista internazionale di cultura urbanistica, No 2 (2008): The landscape in history, art, culture and urban planning; theoretical premises and experience
Mechanical Behaviour of Glasses and Amorphous Materials
Creators: name: Parmar, Anshul D. S.
name: Sastry, Srikanth
Publisher: name: arXiv
Year: 2021
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: A wide range of materials can exist in microscopically disordered solid forms, referred to as amorphous solids or glasses. Such materials -- oxide glasses and metallic glasses, to polymer glasses, and soft solids such as colloidal glasses, emulsions and granular packings -- are useful as structural materials in a variety of contexts. Their deformation and flow behaviour is relevant for many others. Apart from fundamental questions associated with the formation of these solids, comprehending their mechanical behaviour is thus of interest, and of significance for their use as materials. In particular, the nature of plasticity and yielding behaviour in amorphous solids has been actively investigated. Different amorphous solids exhibit behaviour that is apparently diverse and qualitatively different from those of crystalline materials. A goal of recent investigations has been to comprehend the unifying characteristics of amorphous plasticity and to understand the apparent differences among them. We summarise some of the recent progress in this direction. We focus on insights obtained from computer simulation studies, and in particular those employing oscillatory shear deformation of model glasses.
Implementation of a logic programming language : R-Maple and its extension to include functions
Creators: name: Yu, Benjamin
Publisher: name: University of British Columbia
Year: 2010

description: The use of logic as a language for communication with computers has been exploited in various research areas. R-Maple is a logic programming language, designed by Paul Voda, which improves on some of the short-comings of Prolog. The implementation details of R-Maple will be discussed. R-Maple is a relational programming language which has relations as its basic objects. It can be extended to include functions to form a functional and relational programming language. The advantage is to increase readability and efficiency during computation. RF-Maple is such a language which results from combining the features of R-Maple with a functional language F-Maple. The semantics of RF-Maple needs to be defined formally. The currently available methods of formalizing the semantics of a programming language are either too complex or insufficient for the task. The theory of pairs [Voda2 84] can be used in formalizing the semantics of RF-Maple. However, introduction of types to the theory is not straight forward. Hence RF-Maple is modified to become a typeless language and its semantics is defined using the theory of pairs.
Kerguelen Islands: a living laboratory to understand the benthic biodiversity of the Antarctic
Creators: name: Féral, Jean-Pierre
name: Poulin, Elie
Publisher: name: Zenodo
Year: 2011

description: The high proportion of brooding (50 to 70% depending on phyla) compared with broadcaster species among invertebrates living along the coast of the Southern ocean has been traditionally interpreted as an adaptation to local environmental conditions. Currently, however, species with a planktotrophic developmental mode are ecologically dominant along coastal areas, in terms of abundance of individuals. The fact that Kerguelen island is inhabited by such species and that the French base Port-aux-Français, with its equipped marine laboratory, made it possible to address questions as to why are there so many brooders in the coastal waters of the Southern ocean and if the apparent ecological success of broadcasters related to their developmental mode. We argue that the present shallow antarctic benthic invertebrate fauna is the result of two processes acting at different temporal scales. First, the high proportion of brooding species compared with coastal communities elsewhere corresponds to species-level selection occurring over geological and evolutionary times which explains the very high biodiversity observed in coastal waters. Second, the ecological dominance of broadcasters is the result of processes operating at ecological timescales that are associated with the advantage of having pelagic larvae under highly disturbed conditions (e.g., ice scouring).
Time-Distance Imaging of Solar Far-Side Active Regions
Creators: name: Zhao, Junwei
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: It is of great importance to monitor large solar active regions in the far-side of the Sun for space weather forecast, in particular, to predict their appearance before they rotate into our view from the solar east limb. Local helioseismology techniques, including helioseismic holography and time-distance, have successfully imaged solar far-side active regions. In this Letter, we further explore the possibility of imaging and improving the image quality of solar far-side active regions by use of time-distance helioseismology. In addition to the previously used scheme with four acoustic signal skips, a five-skip scheme is also included in this newly developed technique. The combination of both four- and five-skip far-side images significantly enhances the signal-to-noise ratio in the far-side images, and reduces spurious signals. The accuracy of the far-side active region imaging is also assessed using one whole year solar observation.
description: 13 pages, 5 figures, accepted by ApJ Letters
Chlerogas boliviensis Brooks & Engel
Creators: name: Engel, Michael
Publisher: name: Zenodo
Year: 2010
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hymenoptera
Halictidae
Chlerogas
Chlerogas boliviensis

description: Chlerogas boliviensis Brooks & Engel Chlerogas boliviensis Brooks and Engel, 1999: 468 [♀]. “ Chlerogas boliviensis Brooks and Engel ”; Engel, 2009a: 450 [♁, misidentifi cation, actually C. aterrimus, sp. n., vide supra]. New record. ♀, BOLIVIA: Sta. Cruz Dept. [Santa Cruz Department], Caballero Prov. [Manuel Maria Caballero Province], PN Amboró [Parque Nacional Amboró], 17º50'3"S, 64º23'26"W, 2030 m, X.17–20.2001 [17–20 October 2001], S. Spector & J. Ledezma, flight intercept trap (AMNH). Older records. Bolivia: 1♀, La Paz [Department], Chulumani [Sud Yungas Province], cloud forest [17º10'S, 65º19'W], c. 2000 m, 27–29 June 1979, M. Cooper (NHML: holotype); 1♀, La Paz [Department], Chulumani [Sud Yungas Province], cloud forest [17º10'S, 65º19'W], c. 2000 m, 5 April 1979, M. Cooper (NHML: paratype).
description: Published as part of Engel, Michael, 2010, The bee genus Chlerogas in Bolivia (Hymenoptera, Halictidae), pp. 61-70 in ZooKeys 46 (46) on pages 67-68, DOI: 10.3897/zookeys.46.460, http://zenodo.org/record/576665
description: {"references": ["Brooks RW, Engel MS (1999) A revision of the augochlorine bee genus Chlerogas Vachal (Hymenoptera: Halictidae). Zoological Journal of the Linnean Society 125 (4): 463 - 486.", "Engel MS (2009 a) Notes on the augochlorine bee genus Chlerogas (Hymenoptera: Halictidae). Caldasia 31 (2): 449 - 457."]}
Percorsi di ricerca e di formazione sulla città interetnica: spazi e funzioni, mediazione e interazione, aggregazione e integrazione
Creators: name: Clemente, Massimo
name: Esposito, Gabriella
Publisher: name: Territorio della Ricerca su Insediamenti e Ambiente. Rivista internazionale di cultura urbanistica
Year: 2008

description: Territorio della Ricerca su Insediamenti e Ambiente. Rivista internazionale di cultura urbanistica, No 2 (2008): The landscape in history, art, culture and urban planning; theoretical premises and experience
title: Apollonia, Albanien. Grabung im Theater von Apollonia
Creators: name: von Hesberg, Henner
Publisher: name: Deutsches Archäologisches Institut
Year: 2014

description: e-Forschungsberichte, Faszikel 1 (2014)
description: In the last two years we tried to bring the excavations, the documentation and the reconstruction of the theater-building to an end. The architectonic material has been drawn in its main parts, brought into a data-base and used for the reconstruction. The cavea, the stage-building and also a strange arched doorway are completed in major parts. Some smaller trenches on top of the cavea allowed an insight into constructions of the earlier period. There is a very dense construction of houses of the 5th century BC and perhaps also of earlier times, with the same street-grid which has been found during the research-work by the French colleagues in the upper agora. The main activity concentrated on bringing the orchestra and parts of the orchestra similar to the ancient form. The reconstruction started in 2012 and ended with the re-construction of the whole orchestra round and the southern aisle of the cavea. But this collapsed after heavy rainfalls in winter 2012/13. Therefore, in 2013 the work had to be redone with a new substruction of the cavea and a new drain system.
Dibattiti, convegni e conferenze
Creators: name: Vari, Autori
Publisher: name: Territorio della Ricerca su Insediamenti e Ambiente. Rivista internazionale di cultura urbanistica
Year: 2008

description: Territorio della Ricerca su Insediamenti e Ambiente. Rivista internazionale di cultura urbanistica, No 2 (2008): The landscape in history, art, culture and urban planning; theoretical premises and experience
Measurement of the p\bar{p}\to WZ + X cross section at \sqrt{s}=1.96 TeV and limits on WWZ trilinear gauge couplings
Creators: name: D0 Collaboration
name: Abazov, V.
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: We present measurements of the process $p\bar{p} \to WZ+X \to \ell^{\prime} ν_{\ell^{\prime}} \ell \bar{\ell}$ at $\sqrt{s}=1.96$ TeV, where $\ell$ and $\ell^{\prime}$ are electrons or muons. Using 1 fb$^{-1}$ of data from the D0 experiment, we observe 13 candidates with an expected background of $4.5\pm0.6$ events and measure a cross section $σ(WZ)=2.7^{+1.7}_{-1.3}$ pb. From the number of observed events and the $Z$ boson transverse momentum distribution, we limit the trilinear $WWZ$ gauge couplings to $-0.17 \le λ_Z \le 0.21$ $(Δκ_Z = 0)$ at the 95% C.L. for a form factor scale $Λ=2$ TeV. Further, assuming that $Δg^Z_1 = Δκ_Z$, we find $-0.12 \le Δκ_Z \le 0.29$ $(λ_Z=0)$ at the 95% C.L. These are the most restrictive limits on the $WWZ$ couplings available to date.
description: submitted to Phys. Rev. D
Recensioni
Creators: name: Vari, Autori
Publisher: name: Territorio della Ricerca su Insediamenti e Ambiente. Rivista internazionale di cultura urbanistica
Year: 2008

description: Territorio della Ricerca su Insediamenti e Ambiente. Rivista internazionale di cultura urbanistica, No 2 (2008): The landscape in history, art, culture and urban planning; theoretical premises and experience
title: Menaggio, Italien. Das Gerichtswesen der Römischen Kaiserzeit. Drei trinationale Forschungskonferenzen an der Villa Vigoni
title: Menaggio, Italien. Das Gerichtswesen der Römischen Kaiserzeit. Drei trinationale Forschungskonferenzen an der Villa Vigoni
titleType: Subtitle
Creators: name: Haensch, Rudolf
Publisher: name: Deutsches Archäologisches Institut
Year: 2014

description: e-Forschungsberichte, Faszikel 1 (2014)
description: In front of the Justice and on the See, we are in the hands of God: The legal system of the imperial era in the light of the documentary evidences. ‒ Three tri-national conferences in the Villa Vigoni.
Lectures on Gauged Supergravity and Flux Compactifications
Creators: name: Samtleben, Henning
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: The low-energy effective theories describing string compactifications in the presence of fluxes are so-called gauged supergravities: deformations of the standard abelian supergravity theories. The deformation parameters can be identified with the various possible (geometric and non-geometric) flux components. In these lecture notes we review the construction of gauged supergravities in a manifestly duality covariant way and illustrate the construction in several examples.
description: 48 pages, lectures given at the RTN Winter School on Strings, Supergravity and Gauge Theories, CERN, January 2008
title: Yeha, Äthiopien
Creators: name: Gerlach, Iris
Publisher: name: Deutsches Archäologisches Institut
Year: 2014

description: e-Forschungsberichte, Faszikel 1 (2014)
description: The research in Yeha, 35 km to the northeast of Aksum, is devoted to a systematic examination of the cultural relations between South Arabia and East Africa. In 2012/13 the work of the Ethiopian-German project was concentrated on archaeological and conservational work on the monumental buildings of the site (early 1st millennium BC), on excavations in a cemetery and on archaeological examinations in the church forecourt and below a planned site museum.
title: Karabalgasun und Karakorum, Mongolei
Creators: name: Franken, Christina
Publisher: name: Deutsches Archäologisches Institut
Year: 2014

description: e-Forschungsberichte, Faszikel 1 (2014)
description: The KAAK has conducted excavations in the old Mongolian capital Karakorum (founded 1220/35 AD) since 2000, complemented by excavations in the Uyghurian capital Karabalgasun (740‒840 AD) since 2007. Both cities are situated near to each other in the Orkhonvalley about 370 km in the west of the todays Mongolian capital Ulaanbaatar. In 2012/2013, the archaeological research mainly focused on the architectural details of the citadel in the southeast of the so-called palatial or temple complex as well as on the question of continuity of the gate situation in Karakorum.