cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Quantum correlation in quark-gluon medium
Creators: name: Park, Chanyong
name: Lee, Jung Hun
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We study thermodynamics and quantum correlations of the string cloud geometry whose field theory dual is the quark-gluon medium. We found the novel universality of the entanglement entropy first law in the high quark density limit. We also showed that a correlation function generally decreases as the entanglement entropy of the background medium increases due to the screening effect of the background. We study the UV and IR effects of the medium on phase transition behaviour observed in the holographic mutual information using both perturbative and numerical computations. Moreover, by numerical computation, we show that in the IR region the critical length obtained from the mutual information behaves similar to the correlation length of the two-point function.
description: 18 pages, 2 figures, reference added, minor changes
Convex hyperspaces of probability measures and extensors in the asymptotic category
Creators: name: Repovš, Dušan
name: Zarichnyi, Mykhailo
Publisher: name: arXiv
Year: 2011
Subjects: subject: General Topology (math.GN)
subject: Functional Analysis (math.FA)
subject: Probability (math.PR)
subject: FOS: Mathematics
subject: 46E27, 46E30, 54C55, 54E35,

description: The objects of the Dranishnikov asymptotic category are proper metric spaces and the morphisms are asymptotically Lipschitz maps. In this paper we provide an example of an asymptotically zero-dimensional space (in the sense of Gromov) whose space of compact convex subsets of probability measures is not an absolute extensor in the asymptotic category in the sense of Dranishnikov.
Über die Erfassung der Widerstandserhöhung im Seegang durch Energiebetrachtungen
Creators: name: Eggers, Klaus
Publisher: name: TUHH Universitätsbibliothek
Year: 1960
Subjects: classificationCode: 52.00
subject: Maschinenbau, Energietechnik, Fertigungstechnik: Allgemeines

description: Über die Erfassung der Widerstandserhöhung im Seegang durch Energiebetrachtungen
Passive Flow Control for Series Inflatable Actuators: Application on a Wearable Soft-Robot for Posture Assistance
Creators: name: Paez-Granados, Diego
name: Yamamoto, Takehiro
name: Kadone, Hideki
name: Suzuki, Kenji
Publisher: name: arXiv
Year: 2021
Subjects: subject: Robotics (cs.RO)
subject: Applied Physics (physics.app-ph)
subject: FOS: Computer and information sciences
subject: FOS: Physical sciences

description: This paper presents a passive control method for multiple degrees of freedom in a soft pneumatic robot through the combination of flow resistor tubes with series inflatable actuators. We designed and developed these 3D printed resistors based on the pressure drop principle of multiple capillary orifices, which allows a passive control of its sequential activation from a single source of pressure. Our design fits in standard tube connectors, making it easy to adopt it on any other type of actuator with pneumatic inlets. We present its characterization of pressure drop and evaluation of the activation sequence for series and parallel circuits of actuators. Moreover, we present an application for the assistance of postural transition from lying to sitting. We embedded it in a wearable garment robot-suit designed for infants with cerebral palsy. Then, we performed the test with a dummy baby for emulating the upper-body motion control. The results show a sequential motion control of the sitting and lying transitions validating the proposed system for flow control and its application on the robot-suit.
description: Copyright IEEE All rights reserved.Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses. IEEE-RAL-RoboSoft-2021, April 12-16. Virtual Conference hosted by Yale, USA
Sample Complexity of Offline Reinforcement Learning with Deep ReLU Networks
Creators: name: Nguyen-Tang, Thanh
name: Gupta, Sunil
name: Tran-The, Hung
name: Venkatesh, Svetha
Publisher: name: arXiv
Year: 2021
Subjects: subject: Machine Learning (stat.ML)
subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: Offline reinforcement learning (RL) leverages previously collected data for policy optimization without any further active exploration. Despite the recent interest in this problem, its theoretical results in neural network function approximation settings remain elusive. In this paper, we study the statistical theory of offline RL with deep ReLU network function approximation. In particular, we establish the sample complexity of $n = \tilde{\mathcal{O}}( H^{4 + 4 \frac{d}α} κ_μ^{1 + \frac{d}α} ε^{-2 - 2\frac{d}α} )$ for offline RL with deep ReLU networks, where $κ_μ$ is a measure of distributional shift, {$H = (1-γ)^{-1}$ is the effective horizon length}, $d$ is the dimension of the state-action space, $α$ is a (possibly fractional) smoothness parameter of the underlying Markov decision process (MDP), and $ε$ is a user-specified error. Notably, our sample complexity holds under two novel considerations: the Besov dynamic closure and the correlated structure. While the Besov dynamic closure subsumes the dynamic conditions for offline RL in the prior works, the correlated structure renders the prior works of offline RL with general/neural network function approximation improper or inefficient {in long (effective) horizon problems}. To the best of our knowledge, this is the first theoretical characterization of the sample complexity of offline RL with deep neural network function approximation under the general Besov regularity condition that goes beyond {the linearity regime} in the traditional Reproducing Hilbert kernel spaces and Neural Tangent Kernels.
description: https://openreview.net/forum?id=LdEm0umNcv
Comment on "Superradiant Phase Transitions and the Standard Description of Circuit QED"
Creators: name: Ciuti, Cristiano
name: Nataf, Pierre
Publisher: name: arXiv
Year: 2011
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: A Comment on the Letter by O. Viehmann, J. von Delft, and F. Marquardt [Phys. Rev. Lett. {\bf 107}, 113602 (2011)].
Theoretische Ausgangspositionen in der Sequenzanalyse Andrew Abbotts
Creators: name: Fleck, Jan-Philipp Alexander
Publisher: name: TUHH Universitätsbibliothek
Year: 2010
Subjects: subject: Sequenzanalyse
subject: Andrew Abbott
classificationCode: 300
subject: Sozialwissenschaften, Soziologie

description: Ziel der hier wiedergegebenen, perspektivgebundenen Durchsicht der Literatur Abbotts ist es zunächst, die bei Abbott zugrunde gelegten theoretischen Annahmen entlang ihrer wesentlichen „Fluchtlinien“ darzustellen. Es geht also darum, den theoretischen Rahmen zu skizzieren, innerhalb dessen Abbott seine methodologisch spezifischen Vorstöße zu den sozialen Sequenzen unternimmt. Diese Beschäftigung mit den bei Abbott anzutreffenden theoretischen Grundan-nahmen erfolgt voreingenommen, also: perspektivgebunden. Uns interessiert, inwiefern die bei Abbott aufzufindenden Konzeptionen seines methodologisch-theoretischen Inventars geeignet sind, um als Bezugspunkte einer systemtheoretisch geprägten Kommunikationstheorie zu fungieren. Oder anders: inwiefern Abbotts Positionen in der Lage sind, eine von Luhmann ausgehende bzw. diesen überwindende (Malsch) Kommunikationssoziologie zu „irritieren“. In diesem Sinne stellt sich der angestrebte theoretische Brückenschlag als ein an Grundbegriffen wie „Ereignis“, „Struktur“, „Prozeß“, „Zeit“ usf. orientierter dar.
Temperature dependence of symmetry energy of finite nuclei
Creators: name: De, J. N.
name: Samaddar, S. K.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: The temperature dependence of the symmetry energy and the symmetry free energy coefficients of atomic nuclei is investigated in a finite temperature Thomas-Fermi framework employing the subtraction procedure. A substantial decrement in the symmetry energy coefficient is obtained for finite systems,contrary to those seen for infinite nuclear matter at normal and somewhat subnormal densities. The effect of the coupling of the surface phonons to the nucleonic motion is also considered; this is found to decrease the symmetry energies somewhat at low temperatures.
description: 9 pages including 8 figures; accepted for publication in Phys. Rev. C
An Investigation of Marine Traffic in South-East Asian Waters and in the Caribbean
Creators: name: Kwik, Kîng H.
name: Stecher, Wilfried
Publisher: name: TUHH Universitätsbibliothek
Year: 1978
Subjects: classificationCode: 620
subject: Ingenieurwissenschaften
classificationCode: 620
subject: Engineering and allied operations
classificationCode: 52.00
subject: Maschinenbau, Energietechnik, Fertigungstechnik: Allgemeines

description: An Investigation of Marine Traffic in South-East Asian Waters and in the Caribbean
On some multiple zeta-star values of one-two-three indices
Creators: name: Tasaka, Koji
name: Yamamoto, Shuji
Publisher: name: arXiv
Year: 2012
Subjects: subject: Number Theory (math.NT)
subject: FOS: Mathematics
subject: Primary 11M32, Secondary 05A15, 40B05

description: In this paper, we present some identities for multiple zeta-star values with indices obtained by inserting 3 or 1 into the string 2,...,2. Our identities give analogues of Zagier's evaluation of ζ(2,...,2,3,2,..., 2) and examples of a kind of duality of multiple zeta-star values. Moreover, their generalizations give partial solutions of conjectures proposed by Imatomi, Tanaka, Wakabayashi and the first author.
description: 12 pages
Bei der Redaktion eingegangene Neuerscheinungen
Creators: name: Redaktion, Die
Publisher: name: Kunstchronik. Monatsschrift für Kunstwissenschaft, Museumswesen und Denkmalpflege
Year: 2020

description: Kunstchronik. Monatsschrift für Kunstwissenschaft, Museumswesen und Denkmalpflege, Bd. 23 Nr. 12 (1970): Kunstchronik. Monatsschrift für Kunstwissenschaft, Museumswesen und Denkmalpflege
Smart Libraries – ein Konzept auch für Kunst- und Museumsbibliotheken
Creators: name: Brumen, Patrizia
Publisher: name: AKMB-news: Informationen zu Kunst, Museum und Bibliothek
Year: 2020

description: AKMB-news: Informationen zu Kunst, Museum und Bibliothek, Bd. 25 Nr. 1 (2019): AKMB-news
Devnagari document segmentation using histogram approach
Creators: name: Dongre, Vikas J
name: Mankar, Vijay H
Publisher: name: arXiv
Year: 2011
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: Document segmentation is one of the critical phases in machine recognition of any language. Correct segmentation of individual symbols decides the accuracy of character recognition technique. It is used to decompose image of a sequence of characters into sub images of individual symbols by segmenting lines and words. Devnagari is the most popular script in India. It is used for writing Hindi, Marathi, Sanskrit and Nepali languages. Moreover, Hindi is the third most popular language in the world. Devnagari documents consist of vowels, consonants and various modifiers. Hence proper segmentation of Devnagari word is challenging. A simple histogram based approach to segment Devnagari documents is proposed in this paper. Various challenges in segmentation of Devnagari script are also discussed.
description: 8 pages; 4 figures; 8 tables; journal paper: International Journal of Computer Science, Engineering and Information Technology (IJCSEIT), Vol.1, No.3, August 2011
Theodora Hantos, Das römische Bundesgenossensystem in Italien
Creators: name: Richardson, J. S.
Publisher: name: Bonner Jahrbücher
Year: 2020

description: Rezension zu: Theodora Hantos, Das römische Bundesgenossensystem in Italien. Vestigia 34. Verlag C. H. Beck, München 1983. xi and 196 pages.
description: Bonner Jahrbücher, Bd. 185.1985: Bonner Jahrbücher
Life after eruption - I. Spectroscopic observations of ten nova candidates
Creators: name: Tappert, C.
name: Ederoclite, A.
name: Mennickent, R. E.
name: Schmidtobreick, L.
name: Vogt, N.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We have started a project to investigate the connection of post-novae with the population of cataclysmic variables. Our first steps in this concern improving the sample of known post-novae and their properties. Here we present the recovery and/or confirmation of the old novae MT Cen, V812 Cen, V655 CrA, IL Nor, V2109 Oph, V909 Sgr, V2572 Sgr, and V728 Sco. Principal photometric and spectroscopic properties of these systems are discussed. We find that V909 Sgr is a probable magnetic CV, and that V728 Sco is a high-inclination system. We furthermore suggest that the two candidate novae V734 Sco and V1310 Sgr have been misclassified and instead are Mira variables.
description: 11 pages, 7 figures (some of them in lower resolution), to be published in MNRAS
On the evolution of fuel droplet evaporation zone and its interaction with the flame front in ignition of spray flames
Creators: name: Li, Qiang
name: Shu, Chang
name: Zhang, Huangwei
Publisher: name: arXiv
Year: 2021
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: Evolution of fuel droplet evaporation zone and its interaction with the propagating flame front are studied in this work. A general theory is developed to describe the evolutions of flame propagation speed, flame temperature, droplet evaporation onset and completion locations in ignition and propagation of spherical flames. The influences of liquid droplet mass loading, heat exchange coefficient (or evaporation rate) and Lewis number on spherical spray flame ignition are studied. Two flame regimes are considered, i.e., heterogeneous and homogeneous flames, based on the mixture condition near the flame front. The results indicate that the spray flame trajectories are considerably affected by the ignition energy addition. The critical condition for successful ignition for the fuel-rich mixture is coincidence of inner and outer flame balls from igniting kernel and propagating flame. The flame balls always exist in homogeneous mixtures, indicating that ignition failure and critical successful events occur only in purely gaseous mixture. The fuel droplets have limited effects on minimum ignition energy, which however increases monotonically with the Lewis number. Moreover, flame kernel originates from heterogeneous mixtures due to the initially dispersed droplets near the spark. The evaporative heat loss in the burned and unburned zones of homogeneous and heterogeneous spray flames is also evaluated, and the results show that for the failed flame kernels, evaporative heat loss behind and before the flame front first increases and then decreases. The evaporative heat loss before the flame front generally increases, although non-monotonicity exists, when the flame is successfully ignited and propagate outwardly. For heterogeneous flames, the ratio of the heat loss from the burned zone to the total one decreases as the flame expands.
Massive star formation around I05345+3157 -- I. The dense gas
Creators: name: Lee, Katherine I.
name: Looney, Leslie W.
name: Klein, Randolf
name: Wang, Shiya
Publisher: name: arXiv
Year: 2011
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We present observations of the intermediate to massive star-forming region I05345+3157 using the molecular line tracer CS(2-1) with CARMA to reveal the properties of the dense gas cores. Seven gas cores are identified in the integrated intensity map of CS(2-1). Among these, core 1 and core 3 have counterparts in the 2.7 millimeter continuum data. We suggest that core 1 and core 3 are star-forming cores that may already or will very soon harbor young massive protostars. The total masses of core 1 estimated from the LTE method and dust emission by assuming a gas-to-dust ratio are 5 +- 1 solar masses and 18 +- 6 solar masses, and that of core 3 are 15 +- 7 solar masses and 11 +- 3 solar masses. The spectrum of core 3 shows blue-skewed self-absorption, which suggests gas infall -- a collapsing core. The observed broad linewidths of the seven gas cores indicate non-thermal motions. These non-thermal motions can be interactions with nearby outflows or due to the initial turbulence; the former is observed, while the role of initial turbulence is less certain. Finally, the virial masses of the gas cores are larger than the LTE masses, which for a bound core implies a requirement on the external pressure of ~ 10^8 K/cm^3. The cores have the potential to further form massive stars.
description: Accepted for publication in MNRAS
Else Roesdal, Viking Age Denmark
Creators: name: Wamers, Egon
Publisher: name: Bonner Jahrbücher
Year: 2020

description: Rezension zu: Else Roesdal, Viking Age Denmark. British Museum Publications, London 1982. 272 Seiten, 53 Strichzeichnungen, 51 Fototafeln, 2 Fundlisten.
description: Bonner Jahrbücher, Bd. 185.1985: Bonner Jahrbücher
Development of a scalable method for the efficient simulation of flows using dynamic goal-oriented local grid-adaptation
Creators: name: Manzke, Manuel
Publisher: name: TUHH Universitätsbibliothek
Year: 2019
Subjects: subject: CFD, unstructured grids, finite volume method
subject: Adjoint Navier-Stokes method
subject: Automatic Grid Adaptation
subject: Goal Oriented Grid Adaptation
subject: free surface
subject: Volume of Fluid Interface Capturing Method
classificationCode: 620
subject: Ingenieurwissenschaften

description: Zur effizienten Simulation von maritimen Strömungen wurde ein Verfahren zur lokalen dynamischen Gitter Adaption in ein paralleles Berechnungsverfahren, welches auf dem Druckkorrekturalgorithmus basiert und unstrukturierte Gitter nutzt, integriert. Es wurden verschiedene Verfeinerungs-Indikatoren implementiert, angefangen bei Strömungsmerkmal-basierten bis hin zu ziel-orientierten Fehler Abschätzungen, welche aus der adjungierten Lösung des primalen Strömungsproblems gewonnen werden. Die Effizienz der Simulation von freien Oberflächen Strömungen wurde durch ein explizites Verfahren zu Schärfung der Grenzfläche, welches auf existierende VoF Methoden angewendet wird, sowie ein Zwischen-Schritt Verfahren erhöht. Alle entwickelten Methoden wurden verifiziert und validiert, bevor sie auf komplexe drei-dimensionale Probleme angewendet wurden.
description: A dynamic local grid adaptation method has been implemented in an existing framework of a parallel general-purpose pressure-correction based RANS code for unstructured grids, to efficiently simulate flows in marine applications. Various refinement indicators were implemented, ranging from flow feature based criteria to goal oriented error estimators, derived from the adjoint solution of the primal flow problem. The efficiency of free surface flow simulations has been further enhanced by an explicit interface sharpening (EIS) algorithm, which can be used as an add-on algorithm for existing VoF methods, and a dedicated sub-cycling technique. All developed methods were extensively verified and validated before being applied to complex three-dimensional problems.
Neutrino and antineutrino energy loss rates in massive stars due to isotopes of titanium
Creators: name: Nabi, Jameel-Un
Publisher: name: arXiv
Year: 2011
Subjects: subject: Nuclear Theory (nucl-th)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Weak interaction rates on titanium isotopes are important during the late phases of evolution of massive stars. A search was made for key titanium isotopes from available literature and a microscopic calculation of weak rates of these nuclei were performed using the proton-neutron quasiparticle random phase approximation (pn-QRPA) theory. Earlier the author presented the stellar electron capture rates on titanium isotopes. In this paper I present the neutrino and antineutrino energy loss rates due to capture and decay rates on isotopes of titanium in stellar environment. Accurate estimate of neutrino energy loss rates are needed for the study of the late stages of the stellar evolution, in particular for cooling of neutron stars and white dwarfs. The results are also compared against previous calculations. At high stellar temperatures the calculated neutrino and antineutrino energy loss rates are bigger by more than two orders of magnitude as compared to the large scale shell model results and favor stellar cores with lower entropies. This study can prove useful for core-collapse simulators.
description: 16 pages, 7 figures
Simulation modelling in accounting and finance: current practices and advances in input modelling
Creators: name: Chorzelski, Daniel
Publisher: name: TUHH Universitätsbibliothek
Year: 2021
Subjects: subject: simulation methodology
subject: Simulation Modelling
subject: Bayesian updating
subject: Modelling and simulation
subject: Bibliometric analysis
classificationCode: 330
subject: Wirtschaft

description: Simulationen stellen eine relevante Forschungsmethode in Controlling und Finanzwissen-schaft dar, diese Dissertation trägt an verschiedenen Stellen zu dieser Methodik bei. Erstens wird der Einfluss der Methodik auf das Forschungsfeld bibliometrisch quantifiziert und die Art der Nutzung sowie das Ausmaß der Diffusion in Forschungsclustern erfasst. Darüber hinaus trägt diese Dissertation eine auf Bayesscher Statistik beruhende Methodik zur Eingangsmodellierung von Simulationen bei. Zuletzt führt diese Dissertation eine neue Messgröße ein, die das Risiko in Simulationsmodellen von epistemologischer Unsicherheit in einer einzigen Zahl quantifiziert.
description: Simulation modelling in accounting and finance represents an important research method, this dissertation contributes to its understanding along several lines. It quantifies the method’s impact on the discipline, the type of usage among researchers as well as quantifying its diffusion across research clusters. Furthermore, this dissertation contributes to simulation input modelling with a method based on Bayesian updating that aggregates different information sources to be used in simulation models. Finally, this dissertation introduces a new metric that captures simulation modelling risk due to epistemic uncertainty of input parameters in a single number.
Coherent phonon spectroscopy and interlayer modulation of charge density wave order in the kagome metal CsV$_3$Sb$_5$
Creators: name: Ratcliff, Noah
name: Hallett, Lily
name: Ortiz, Brenden R.
name: Wilson, Stephen D.
name: Harter, John W.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: The recent discovery of the $A$V$_3$Sb$_5$ ($A=$ K, Rb, Cs) material family offers an exciting opportunity to investigate the interplay of correlations, topology, and superconductivity in kagome metals. The low energy physics of these materials is dominated by an unusual charge density wave phase, but little is understood about the true nature of the order parameter. In this work, we use a combination of ultrafast coherent phonon spectroscopy and first-principles density functional theory calculations to investigate the charge density wave order in CsV$_3$Sb$_5$. We find that the charge density wave is the result of a simultaneous condensation of three optical phonon modes at one $M$ and two $L$ points. This distortion can be described as tri-hexagonal ordering with an interlayer modulation along the $c$ axis. It breaks the $C_6$ rotational symmetry of the crystal and may offer a natural explanation for reports of uniaxial order at lower temperatures in this material family.
Stability Estimates for the X-Ray Transform on Simple Asymptotically Hyperbolic Manifolds
Creators: name: Eptaminitakis, Nikolas
Publisher: name: arXiv
Year: 2021
Subjects: subject: Analysis of PDEs (math.AP)
subject: Differential Geometry (math.DG)
subject: FOS: Mathematics
subject: 58J40, 35R30

description: We study the normal operator to the geodesic X-ray transform on functions in the setting of simple asymptotically hyperbolic manifolds. We construct a parametrix for the normal operator in the 0-pseudodifferential calculus and use it show a stability estimate.
One-step implementation of the Fredkin gate via quantum Zeno dynamics
Creators: name: Shi, Zhi-Cheng
name: Xia, Yan
name: Song, Jie
Publisher: name: arXiv
Year: 2012
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We study one-step implementation of the Fredkin gate in a bi-modal cavity under both resonant and large detuning conditions based on quantum Zeno dynamics, which reduces the complexity of experiment operations. The influence of cavity decay and atomic spontaneous emission is discussed by numerical calculation. The results demonstrate that the fidelity and the success probability are robust against cavity decay in both models and they are also insensitive to atomic spontaneous emission in the large detuning model. In addition, the interaction time is rather short in the resonant model compared to the large detuning model.
description: 22 pages, 7 figures
An Evaluation of Mapping Procedures for the Stationary Ship Wave Problem
Creators: name: Eggers, Klaus
name: Gamst, Andreas
Publisher: name: TUHH Universitätsbibliothek
Year: 1978
Subjects: classificationCode: 52.00
subject: Maschinenbau, Energietechnik, Fertigungstechnik: Allgemeines

description: An Evaluation of Mapping Procedures for the Stationary Ship Wave Problem
title: Essays on corporate finance under asymmetric information
Creators: name: Yuan, Yue
Publisher: name: London School of Economics and Political Science (LSE)
Year: 2021

description: This thesis contains three essays on corporate financial transactions when there is asymmetric information between firms and investors. In the first essay, \Security Design under Common-Value Competition", I show common-value competition drives informed investors to propose debt financing, because debt protects them against the winner's curse. The information sensitiveness of investors' securities is positively related to their market power. Among different aspects of market power, monopolistic power is the primary determinant. In the second essay, "Security Design with Two-Sided Asymmetric Information", I study a model in which a firm organizes a security-bid auction when both the firm and investors have private information. In equilibrium, the firm cannot credibly reveal its private valuation by security design, and requires payments in the most information-sensitive security family regardless of its valuation. In the third essay, "Share Issues versus Share Repurchases", Philip Bond, Hongda Zhong and I study firms' share issues and repurchases in a unified framework with the informational friction that firms have superior information to investors. We find asymmetric outcomes of issue and repurchase methods: firms separate on different issue methods, but pool on the most efficient repurchase method. Moreover, firms use more efficient issue methods when raising larger amounts of capital. Both results are consistent with empirical evidences in the literature.
An Efficient Approach to Obtaining Large Numbers of Distant Supernova Host Galaxy Redshifts
Creators: name: Lidman, C.
name: Ruhlmann-Kleider, V.
name: Sullivan, M.
name: Myzska, J.
name: Dobbie, P.
name: Glazebrook, K.
name: Mould, J.
name: Astier, P.
name: Balland, C.
name: Betoule, M.
name: Carlberg, R.
name: Conley, A.
name: Fouchez, D.
name: Guy, J.
name: Hardin, D.
name: Hook, I.
name: Howell, D. A.
name: Pain, R.
name: Palanque-Delabrouille, N.
name: Perrett, K.
name: Pritchet, C.
name: Regnault, N.
name: Rich, J.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We use the wide-field capabilities of the 2dF fibre positioner and the AAOmega spectrograph on the Anglo-Australian Telescope (AAT) to obtain redshifts of galaxies that hosted supernovae during the first three years of the Supernova Legacy Survey (SNLS). With exposure times ranging from 10 to 60 ksec per galaxy, we were able to obtain redshifts for 400 host galaxies in two SNLS fields, thereby substantially increasing the total number of SNLS supernovae with host galaxy redshifts. The median redshift of the galaxies in our sample that hosted photometrically classified Type Ia supernovae (SNe Ia) is 0.77, which is 25% higher than the median redshift of spectroscopically confirmed SNe Ia in the three-year sample of the SNLS. Our results demonstrate that one can use wide-field fibre-fed multi-object spectrographs on 4m telescopes to efficiently obtain redshifts for large numbers of supernova host galaxies over the large areas of sky that will be covered by future high-redshift supernova surveys, such as the Dark Energy Survey.
description: 22 pages, 4 figures, accepted for publication in PASA
Bulk superconductivity in FeTe$_{1-x}$Se$_{x}$ via physicochemical pumping of excess iron
Creators: name: Dong, Lianyang
name: Zhao, He
name: Zeljkovic, Ilija
name: Wilson, Stephen D.
name: Harter, John W.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: The iron-based superconductor FeTe$_{1-x}$Se$_{x}$ has attracted considerable attention as a candidate topological superconductor owing to a unique combination of topological surface states and bulk high-temperature superconductivity. The superconducting properties of as-grown single crystals, however, are highly variable and synthesis dependent due to excess interstitial iron impurities incorporated during growth. Here we report a novel physicochemical process for pumping this interstitial iron out of the FeTe$_{1-x}$Se$_{x}$ matrix and achieving bulk superconductivity. Our method should have significant value for the synthesis of high-quality single crystals of FeTe$_{1-x}$Se$_{x}$ with large superconducting volume fractions.
Solving the Maximum Clique Problem via DNA Hairpin Formation
Creators: name: Zimmermann, Karl-Heinz
name: Martínez Pérez, Israel Marck
name: Ignatova, Zoya
name: Gong, Zhang
Publisher: name: TUHH Universitätsbibliothek
Year: 2006
Subjects: subject: Maximum Clique Problem
subject: DNA Computing
subject: Secondary Structure Formation
classificationCode: 004
subject: Informatik
classificationCode: 570
subject: Biowissenschaften, Biologie
subject: Molekulare Bioinformatik
subject: Maximum-Clique-Problem
classificationCode: 68Qxx
subject: Theory of computing
classificationCode: 92Dxx
subject: Genetics and population dynamics

description: The maximum clique problem is one of the famous hard combinatorial problems. This report provides the first molecular-scale autonomous solution of the decision clique problem. It is based on the formation of secondary structures in DNA molecules.
The diameter of the CoRoT target HD 49933. Combining the 3D limb darkening, asteroseismology, and interferometry
Creators: name: Bigot, L.
name: Mourard, D.
name: Berio, P.
name: Thévenin, F.
name: Ligi, R.
name: Tallon-Bosc, I.
name: Chesneau, O.
name: Delaa, O.
name: Nardetto, N.
name: Perraut, K.
name: Stee, Ph.
name: Boyajian, T.
name: Morel, P.
name: Pichon, B.
name: Kervella, P.
name: Schmider, F. X.
name: McAlister, H.
name: Brummelaar, T. Ten
name: Ridgway, S. T.
name: Sturmann, J.
name: Sturmann, L.
name: Turner, N.
name: Farrington, C.
name: Goldfinger, P. J.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Context. The interpretation of stellar pulsations in terms of internal structure depends on the knowledge of the fundamental stellar parameters. Long-base interferometers permit us to determine very accurate stellar radii, which are independent constraints for stellar models that help us to locate the star in the HR diagram. Aims: Using a direct interferometric determination of the angular diameter and advanced three-dimensional (3D) modeling, we derive the radius of the CoRoT target HD 49933 and reduce the global stellar parameter space compatible with seismic data. Methods: The VEGA/CHARA spectro-interferometer is used to measure the angular diameter of the star. A 3D radiative hydrodynamical simulation of the surface is performed to compute the limb darkening and derive a reliable diameter from visibility curves. The other fundamental stellar parameters (mass, age, and Teff) are found by fitting the large and small p-mode frequency separations using a stellar evolution model that includes microscopic diffusion. Results: We obtain a limb-darkened angular diameter of θLD = 0.445 \pm 0.012 mas. With the Hipparcos parallax, we obtain a radius of R = 1.42 \pm 0.04 Rsun. The corresponding stellar evolution model that fits both large and small frequency separations has a mass of 1.20 \pm 0.08 Msun and an age of 2.7 Gy. The atmospheric parameters are Teff = 6640 \pm 100 K, log g = 4.21 \pm 0.14, and [Fe/H] = -0.38.
description: 4 pages, 4 figures
More Powerful Conditional Selective Inference for Generalized Lasso by Parametric Programming
Creators: name: Duy, Vo Nguyen Le
name: Takeuchi, Ichiro
Publisher: name: arXiv
Year: 2021
Subjects: subject: Machine Learning (stat.ML)
subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: Conditional selective inference (SI) has been studied intensively as a new statistical inference framework for data-driven hypotheses. The basic concept of conditional SI is to make the inference conditional on the selection event, which enables an exact and valid statistical inference to be conducted even when the hypothesis is selected based on the data. Conditional SI has mainly been studied in the context of model selection, such as vanilla lasso or generalized lasso. The main limitation of existing approaches is the low statistical power owing to over-conditioning, which is required for computational tractability. In this study, we propose a more powerful and general conditional SI method for a class of problems that can be converted into quadratic parametric programming, which includes generalized lasso. The key concept is to compute the continuum path of the optimal solution in the direction of the selected test statistic and to identify the subset of the data space that corresponds to the model selection event by following the solution path. The proposed parametric programming-based method not only avoids the aforementioned major drawback of over-conditioning, but also improves the performance and practicality of SI in various respects. We conducted several experiments to demonstrate the effectiveness and efficiency of our proposed method.
title: Ξενοδοχεία μηδενικού ενεργειακού ισοζυγίου: ανάλυση και προοπτικές
title: Zero energy balance hotels: analysis and perspectives
Creators: name: Μιχελακης Ανδρεας
Publisher: name: Technical University of Crete
Year: 2023

description: Τα ξενοδοχεία σχεδόν μηδενικής κατανάλωσης ενέργειας (net-Zero Hotel) είναι ξενοδοχεία που έχουν σχεδιαστεί και κατασκευαστεί για να καταναλώνουν όσο το δυνατόν λιγότερη ενέργεια, συνδυάζοντας την παραγωγή ενέργειας από ανανεώσιμες πηγές. Θεωρούνται μια πιο βιώσιμη και φιλική προς το περιβάλλον επιλογή σε σύγκριση με τα παραδοσιακά ξενοδοχεία. Τα κύρια οφέλη των nZEH περιλαμβάνουν τη μειωμένη κατανάλωση ενέργειας και το σχετικό κόστος, τη βελτιωμένη ποιότητα του εσωτερικού περιβάλλοντος και τις μειωμένες περιβαλλοντικές επιπτώσεις. Ωστόσο, υπάρχουν επίσης ορισμένα μειονεκτήματα που πρέπει να ληφθούν υπόψη, όπως το υψηλότερο αρχικό κόστος κατασκευής και συντήρησης των nZEH. Συνολικά, τα nZEH έχουν τη δυνατότητα να μειώσουν σημαντικά τις περιβαλλοντικές επιπτώσεις της βιομηχανίας φιλοξενίας και να παρέχουν μια πιο βιώσιμη επιλογή για τους ταξιδιώτες.Αρχικά, για την μελέτη και κατασκευή των μοντέλων χρησιμοποιήθηκαν τα προγράμματα Sketchup και Openstudio, στα οποία σχεδιάστηκαν το αρχικό κτηριακό μοντέλο οπού αφορά το ξενοδοχείο στην τωρινή του μορφή, αλλά και στη συνέχεια το σχεδιασμό του δευτέρου κτηριακού μοντέλου που αφορά την εξέλιξη της συγκεκριμένης ξενοδοχειακής μονάδας σε μια πιο ενεργειακά αποδοτική-σχεδόν μηδενικής κατανάλωσης ενέργειας- μονάδα. Κατόπιν του σχεδιασμού και των δύο μοντέλων, έγινε σύγκριση των αποτελεσμάτων τους, συγκρίνοντας ουσιαστικά τις χρηματοοικονομικές και ενεργειακές διαφορές μεταξύ των ενεργειακών συστημάτων και καταναλώσεων. Τα αποτελέσματα δείχνουν ότι οι ενεργειακές ανάγκες, ως μέσο όρο, μειώθηκαν κατά 85%, ο μέσος όρος εκπεμπόμενης ποσότητας ισοδύναμου άνθρακα που εκλύεται στην ατμόσφαιρα ανά έτος ισοδυναμεί με 13416,70 kgCO2e/kWh, το κόστος της συγκεκριμένης επένδυσης να ανέρχεται στα 1.430.252,00 (€) και το χρόνο απόσβεσης να αντιστοιχεί στα 9 χρόνια.
description: Near-zero energy hotels (nZEH) are environmentally friendly hotels designed to minimize energy consumption and utilize renewable energy sources. They offer benefits such as reduced energy costs, improved indoor environment, and lower environmental impact. However, initial construction and maintenance costs are higher. This thesis employed Sketchup and Openstudio to design and compare two hotel models, demonstrating an average 85% energy reduction with a €1,430,252.00 investment and a 9-year payback period. nZEHs have the potential to significantly decrease the hospitality industry's environmental footprint and provide sustainable options for travelers.
Non-equilibrium boundary driven quantum systems: models, methods and properties
Creators: name: Landi, Gabriel T.
name: Poletti, Dario
name: Schaller, Gernot
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: Recent years have seen tremendous progress in the theoretical understanding of quantum systems driven dissipatively by coupling them to different baths at their edges. This was possible because of the concurrent advances in the models used to represent these systems, the methods employed, and the analysis of the emerging phenomenology. Here we aim to give a comprehensive review of these three integrated research directions. We first provide an overarching view of the models of boundary-driven open quantum systems, both in the weak and strong coupling regimes. This is followed by a review of state-of-the-art analytical and numerical methods, both exact, perturbative and approximate. Finally, we discuss the transport properties of some paradigmatic one-dimensional chains, with an emphasis on disordered and quasiperiodic systems, the emergence of rectification and negative differential conductance, and the role of phase transitions, and we give an outlook on further research options.
Optimal Placement of Valves in a Water Distribution Network with CLP(FD)
Creators: name: Cattafi, Massimiliano
name: Gavanelli, Marco
name: Nonato, Maddalena
name: Alvisi, Stefano
name: Franchini, Marco
Publisher: name: arXiv
Year: 2011
Subjects: subject: Logic in Computer Science (cs.LO)
subject: FOS: Computer and information sciences
subject: D.1.6; G.1.6

description: This paper presents a new application of logic programming to a real-life problem in hydraulic engineering. The work is developed as a collaboration of computer scientists and hydraulic engineers, and applies Constraint Logic Programming to solve a hard combinatorial problem. This application deals with one aspect of the design of a water distribution network, i.e., the valve isolation system design. We take the formulation of the problem by Giustolisi and Savic (2008) and show how, thanks to constraint propagation, we can get better solutions than the best solution known in the literature for the Apulian distribution network. We believe that the area of the so-called hydroinformatics can benefit from the techniques developed in Constraint Logic Programming and possibly from other areas of logic programming, such as Answer Set Programming.
description: Best paper award at the 27th International Conference on Logic Programming - ICLP 2011; Theory and Practice of Logic Programming, (ICLP'11) Special Issue, volume 11, issue 4-5, 2011
title: Theoretische und experimentelle Untersuchungen an einer trockenen Entschwefelungsanlage für Schiffsabgase
title: Theoretical and experimental studies on a dry desulphurisation system for marine exhaust gas
titleType: AlternativeTitle
Creators: name: Schladör, Christoph
Publisher: name: TUHH Universitätsbibliothek
Year: 2015
Subjects: subject: Schwefeloxid, SOx, DeSOx, Abgasreinigung, Abgasentschwefelung, Abgaswäscher, Schiff, Emissionen, Emissionsminderung, Umweltschutz, Grenzwerte, Absorpt
subject: Scrubber, DryEGCS, Exhaust, Cleaning, desulphurisation, desulfurization, ECA, dry, IMO, emission reduction, green shipping, calciumhydroxide, pellets,
classificationCode: 620
subject: Ingenieurwissenschaften
classificationCode: 620
subject: Engineering and allied operations
subject: Abgas
subject: Entschwefelung
subject: Emissionsverringerung
subject: Schiff
subject: Absorber
subject: Skrubber
subject: Calciumhydroxid
subject: Granulat

description: Das „Dry Exhaust Gas Cleaning System", ein Verfahren zur Entschwefelung von Schiffsabgasen wird untersucht. In dem Verfahren wird ein Granulat aus Calciumhydroxid (Ca(OH)2) genutzt, um die Schwefeloxide im Abgas zu absorbieren. Experimentelle Untersuchungen an einer Versuchsanlage an Bord und einer Prüfstandanlage werden genutzt, um ein kinetisches Modell zu entwickeln. Mit dem Modell, das die chemischen Reaktionen, den Stofftransport und die Gasströmung abbildet, wird die Entschwefelung unter verschiedenen Betriebsbedingungen berechnet. Die Ergebnisse werden verwendet, um die Auslegung von Entschwefelungsanlagen auf Schiffen zu verbessern.
description: The "Dry Exhaust Gas Cleaning System", a process for the removal of sulphur oxides from ships exhaust gases is examined. The process uses calcium hydroxide pellets (Ca(OH)2) in a fixed bed to absorb SO2 and SO3 molecules. Practical testing was done on an onboard pilot plant and a small test bed. Using the results, a kinetic model describing the chemical reactions, material transport and flow is developed. The model is used to calculate the desulphuring capacities in different conditions. It helps to improve the design of onboard installations of the system.
Stable two-dimensional solitons supported by radially inhomogeneous self-focusing nonlinearity
Creators: name: Sakaguchi, Hidetsugu
name: Malomed, Boris A.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Pattern Formation and Solitons (nlin.PS)
subject: FOS: Physical sciences

description: We demonstrate that modulation of the local strength of the cubic self-focusing (SF) nonlinearity in the two-dimensional (2D) geometry, in the form of a circle with contrast $Δg$ of the SF coefficient relative to the ambient medium with a weaker nonlinearity, stabilizes a family of fundamental solitons against the critical collapse. The result is obtained in an analytical form, using the variational approximation (VA) and Vakhitov-Kolokolov (VK) stability criterion, and corroborated by numerical computations. For the small contrast, the stability interval of the soliton's norm scales as $ΔN\sim Δg$ (the replacement of the circle by an annulus leads to a reduction of the stability region by perturbations breaking the axial symmetry). To further illustrate this mechanism, we demonstrate, in an exact form, the stabilization of 1D solitons against the critical collapse under the action of a locally enhanced quintic SF nonlinearity.
description: 3 pages, 2 figure, to appear in Optics Letters
Single production of vector-like quarks: the effects of large width, interference and NLO corrections
Creators: name: Deandrea, Aldo
name: Flacke, Thomas
name: Fuks, Benjamin
name: Panizzi, Luca
name: Shao, Hua-Sheng
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: We provide a comprehensive discussion, together with a complete setup for simulations, relevant for the production of a single vector-like quark at hadron colliders. Our predictions include finite width effects, signal-background interference effects and next-to-leading order QCD corrections. We explicitly apply the framework to study the single production of a vector-like quark $T$ with charge 2/3, but the same procedure can be used to analyse the single production of vector-like quarks with charge $-4/3$, $-1/3$, $2/3$ and $5/3$, when the vector-like quark interacts with the Standard Model quarks and electroweak bosons. Moreover, this procedure can be straightforwardly extended to include additional interactions with exotic particles. We provide quantitative results for representative benchmark scenarios characterised by the $T$ mass and width, and we determine the role of the interference terms for a range of masses and widths of phenomenological significance. We additionally describe in detail, both analytically and numerically, a striking feature in the invariant mass distribution appearing only in the $T \to th$ channel.
description: 55 pages, 27 figures, v3:typo in normalization factors Eq.(3.13) fixed, Fig. 4 replaced
Direct visualization of edge state in even-layer MnBi2Te4 at zero magnetic field
Creators: name: Lin, Weiyan
name: Feng, Yang
name: Wang, Yongchao
name: Zhu, Jinjiang
name: Lian, Zichen
name: Zhang, Huanyu
name: Li, Hao
name: Wu, Yang
name: Liu, Chang
name: Wang, Yihua
name: Zhang, Jinsong
name: Wang, Yayu
name: Chen, Chui-Zhen
name: Zhou, Xiaodong
name: Shen, Jian
Publisher: name: arXiv
Year: 2021
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Being the first intrinsic antiferromagnetic(AFM) topological insulator(TI), MnBi2Te4 is argued to be a topological axion state in its even-layer form due to the antiparallel magnetization between the top and bottom layers. Here we combine both transport and scanning microwave impedance microscopy(sMIM) to investigate such axion state in atomically thin MnBi2Te4 with even-layer thickness at zero magnetic field. While transport measurements show a zero Hall plateau signaturing the axion state, sMIM uncovers an unexpected edge state raising questions regarding the nature of the 'axion state'. Based on our model calculation, we propose that the edge state of even-layer MnBi2Te4 at zero field is derived from gapped helical edge states of the quantum spin Hall effect with time-reversal-symmetry breaking, when a crossover from a three-dimensional TI MnBi2Te4 to a two-dimensional TI occurs. Our finding thus signifies the richness of topological phases in MnB2Te4 that has yet to be fully explored.
description: 17 pages, 4 figures
Complementary Resource Relation of Concurrence and Roughness for atwo Qubits State
Creators: name: Reis, Mauricio
name: Oliveira, Adélcio C.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Quantum resources lie at the core of quantum computation as they are responsible for the computational advantage in many tasks. The complementary relations are a pathway to understanding how the physical quantities are related. Here it was shown that there is a complementary relationship that evolves quantumness of a two qubits state and the degree of entanglement, respectively measured by Roughness and Concurrence. It was shown that there is a $\mathbb{R}^2$ surface that characterizes these quantities and can be understood as a projection of the Bloch Sphere. The distribution of states on the surface shows a concentration in the region of lower roughness and Concurrence, i.e., in the subset of states of greater entropy.
description: 12 pages 2 figures