cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
title: Essays on FinTech and financial markets
Creators: name: Tang, Bo
Publisher: name: London School of Economics and Political Science (LSE)
Year: 2022

description: This thesis contains three essays on FinTech and financial markets. 
In the first chapter, I study the business models of cryptocurrency exchanges and their implications for token performance and the cryptocurrency exchange industry dynamics. As the most powerful financial intermediaries in cryptocurrency markets, cryptocurrency exchanges play the dual roles of traditional exchanges and underwriters. Based on two novel measures that capture the hidden heterogeneity of cryptocurrency exchanges, I show that 1) tokens listed in exchanges with large trading revenues perform better, and 2) exchange characteristics predict token returns, with stronger effects for exchanges with large trading revenues. A stylized reputation model shows how the interaction between trading and listing explains differences in token performance. I also argue that first-mover advantages lead to a natural concentration in the cryptocurrency exchange industry. 
In the second chapter (co-authored with Yang You), we find that Bitcoin trading is more active in countries where people express more distrust in others. The paper argues that distrust serves as a fundamental for cryptocurrency valuation by exploring price differences in panel data. We proxy for Bitcoin demand with transitory price deviations— Bitcoin prices in a local currency, converted into dollars, relative to the average worldwide dollar Bitcoin prices. A simple portfolio choice model generates several predictions that we test empirically. Price deviations rise when 1) perceptions of institutional failures grow, 2) crypto-trading frictions increase, and 3) cryptocurrency prices rally. Consistent with the model’s predictions, distrust explains price response heterogeneity: investors in low-trust countries demand more Bitcoins and drive up its price relative to the world dollar price when local institutional quality deteriorates, arbitrage frictions intensify, and risk appetite rises. 
In the third chapter, I construct a measure which captures the evolution of market beliefs based on option data. By tracking market belief updates over time, I find evidence of excess volatility in expected returns in one-month investment horizons. The evidence is inconsistent with expected returns being a martingale. I find no evidence of excess volatility in six-month investment horizons. Based on the dynamics of market beliefs, I measure uncertainty as the time-series volatility of expected returns. I show evidence of an uncertainty premium.
Properties of the ionized gas of circumnuclear star-forming regions in early type spirals
Creators: name: Diaz, Angeles I.
name: Hagele, Guillermo F.
name: Terlevich, Elena
name: Terlevich, Roberto
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: (Abbr.) A study of cicumnuclear star-forming regions (CNSFRs) in several early type spirals has been made in order to investigate their main properties: stellar and gas kinematics, dynamical masses, ionising stellar masses, chemical abundances and other properties of the ionised gas. Both high resolution (R$ \sim $20000) and moderate resolution (R ~ 5000) have been used. In some cases these regions, about 100 to 150 pc in size, are seen to be composed of several individual star clusters with sizes between 1.5 and 4.9 pc estimated from Hubble Space Telescope (HST) images. Stellar and gas velocity dispersions are found to differ by about 20 to 30 km/s with the H$β$ emission lines being narrower than both the stellar lines and the [OIII] $λ$ 5007 Ålines. The twice ionized oxygen, on the other hand, shows velocity dispersions comparable to those shown by stars. We have applied the virial theorem to estimate dynamical masses of the clusters, assuming that systems are gravitationally bounded and spherically symmetric, and using previously measured sizes. The measured values of the stellar velocity dispersions yield dynamical masses of the order of 10$^7$ to 10$^8$ solar masses for the whole CNSFRs. ...
description: 7 pages, 8 figures, proceeding of the meeting "Young massive star clusters - Initial conditions and environments", Granada, Spain, 2007
Magneto-Gyrotropic Photogalvanic Effects in Semiconductor Quantum Wells
Creators: name: Bel'kov, V. V.
name: Ganichev, S. D.
name: Ivchenko, E. L.
name: Tarasenko, S. A.
name: Weber, W.
name: Giglberger, S.
name: Olteanu, M.
name: Tranitz, H. -P.
name: Danilov, S. N.
name: Schneider, Petra
name: Wegscheider, W.
name: Weiss, D.
name: Prettl, W.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We show that free-carrier (Drude) absorption of both polarized and unpolarized terahertz radiation in quantum well (QW) structures causes an electric photocurrent in the presence of an in-plane magnetic field. Experimental and theoretical analysis evidences that the observed photocurrents are spin-dependent and related to the gyrotropy of the QWs. Microscopic models for the photogalvanic effects in QWs based on asymmetry of photoexcitation and relaxation processes are proposed. In most of the investigated structures the observed magneto-induced photocurrents are caused by spin-dependent relaxation of non-equilibrium carriers.
Superconductivity in CuAl2-type Co0.2Ni0.1Cu0.1Rh0.3Ir0.3Zr2 with a high-entropy-alloy transition metal site
Creators: name: Mizuguchi, Yoshikazu
name: Kasem, Md. Riad
name: Matsuda, Tatsuma D.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Research on high-entropy-alloy (HEA) superconductors is a growing field in material science. In this study, we explored new HEA-type superconductors and discovered a CuAl2-type superconductor Co0.2Ni0.1Cu0.1Rh0.3Ir0.3Zr2 with a HEA-type transition metal site. A superconducting transition was observed at 8.0 K after electrical resistivity, magnetization, and specific heat measurements. The bulk characteristics of the superconductivity were confirmed through the specific heat measurements. The discovery of superconductivity in HEA-type Co0.2Ni0.1Cu0.1Rh0.3Ir0.3Zr2 will provide a novel pathway to explore new HEA-type superconductors and investigate the relationship between the mixing entropy and superconductivity of HEA-type compounds.
description: 17 pages, 4 figures, 1 table, supplemental data
title: Skuteczność instrumentów planowania przestrzennego w kreowaniu zrównoważonego rozwoju Kostrzyna nad Odrą
Creators: name: Żurawska, Katarzyna
name: Kasińska-Andruszkiewicz, Agnieszka
Publisher: name: Publishing House of Poznan University of Technology
Year: 2023

description: Zeszyty Naukowe Politechniki Poznańskiej. Architektura, Urbanistyka, Architektura Wnętrz, 15, 311-334
Robotic testbed for multi-robot system
Creators: name: Hou, Xiaolei
Publisher: name: The Australian National University
Year: 2010
Subjects: subject: TJ211.H68 2010
subject: Robotics
subject: Swarm intelligence
subject: Electronics Mathematics

description: This thesis presents the design and developments of robotic and virtual SWARM testbeds within SWARM Laboratory at the Australian National University. Some experimental works and theoretical outcomes are also included as parts of thesis research. These two testbeds aim to implement the active researches within System and Control Group in ANU on multi-agent systems, especially on formation control, onto physical robots and improve the algorithms practically by making comparisons of the experimental results from robotic and virtual testbeds. Due to the lack of sensing and communicating capabilities of the physical robots, an alternative approach, which deploys visual aid, networked communication and remote control, is proposed to provide localization capabilities for agents to achieve the distributed control system scheme of robotic testbed. While, the virtual testbed are capable to conduct self-localization and inter-agent communication, hence, a different distributed system approach is proposed. A series of various drive modes are developed to simplify the process of implementing Matlab simulations and to improve algorithms' performance. Then a novel method is presented for future use of these two testbed, which enables quick implementations on testbeds with a few modifications on Matlab simulation codes. At last, theoretical research on the development of a cooperative shadowing system is presented, and a speed only approach within this framework is proposed and investigated on the virtual testbed system.
Futures far and near : the science fiction of Olaf Stapledon
Creators: name: Douglas, William N.
Publisher: name: The Australian National University
Year: 2010
Subjects: subject: R6037.T18 Z9 2010
subject: Stapledon, Olaf, 1886-1950 Criticism and interpretation
subject: Science fiction, English History and criticism
subject: Authors, English Biography20th century
subject: Science fiction Authorship.

description: Olaf Stapledon is lauded by authors and critics of science fiction as the author of seminal works of twentieth century science fiction, including the early novels, Last and First Men (1930), Odd John (1935), and Star Maker (1937). Stapledon, however, did not consider himself to be a science fiction writer, and drafted these three novels largely in ignorance of genre science fiction. An examination of Stapledon's life reveals him to have been, in essence, a lecturer and public speaker, and a teacher in adult education, in the area of philosophy in particular. Stapledon's approach to these early novels was as a pedagogue and public intellectual. The challenge of reconciling Olaf Stapledon's production of these texts in ignorance of the bases of genre science fiction with their reception as defining pillars of that genre, can be met by illustrating the manner in which Stapledon, through his novels, engaged rigorously with contemporary systems of knowledge, and extrapolated from them potential futures. Nowhere is this more evident than in Stapledon's consistent, and consistently ambivalent, engagement with the theories and ideas of Sigmund Freud. In Last and First Men, Stapledon engages with Darwinian and Freudian accounts of human development, through his use of evolutionary projections of humanity's future as a vehicle to explore the implications of such changes on the individual and their society. In Odd John, Stapledon considers more closely potential changes in the individual psyche which might equip individuals to realise a utopian society, and contrasts these with perceived limitations in humanity's current mental apparatus. In Star Maker, Stapledon explores the nature of the human urge to worship and the significance of this urge for the individual and for society in light of the world view of secular modernity. In these novels Stapledon engages optimistically with futurity, consistently considering and drawing on contemporary systems of knowledge to explore the future implications of potential change. In so doing, Stapledon has created texts which adhere to the tenets of science fiction, and which have demonstrably engaged with issues that science fiction texts into the twenty-first century have continued to explore.
High energy scattering in QCD: dipole approach with Pomeron loops
Creators: name: Levin, Eugene
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: This is the talk given at ``Gribov-75 Memorial Workshop on Quarks, Hadrons, and Strong Interactions", May 22-24, 2005, Budapest. Hungary. In this talk we discuss the BFKL Pomeron Calculus and its interrelation with thecolour dipole approach. The two key problems we consider are the probabilistic interpretation of the BFKL Pomeron Calculus and the possiblescenario for the asymptotic behaviour of the scattering amplitude at high energyin QCD.
description: 16pages, 2 figures in eps files
Consistency-based diagnosis using dynamic models
Creators: name: Watkins, Andrew.
Publisher: name: University of British Columbia
Year: 2009

description: As society grows ever more reliant on increasingly complex technology, so does the importance of being able to quickly detect and diagnose the inevitable failures. Thus, the relatively new field of computer-assisted diagnosis has emerged to help fill this need. To date, expert-systems form the most common paradigm for computer-assisted diagnosis but another approach, that of modelbased diagnosis (MBD), is superior in many respects and offers several advantages over expertsystems. These advantages stem from the fact that MBD uses system models that capture underlying information about both the behaviour and the structure of an artifact. This representation of the artifact allows unanticipated faults to be diagnosed, the system to be simulated, reactions to unusual inputs predicted and makes possible reactive, real-time system control. However, the most important and difficult aspect of M B D is creating useable models; this thesis presents a new approach to modeling for diagnosis that allows simple and declarative models to be written that accurately reflect the behaviour of the artifact of interest. This is done by applying the technique of consistency-based diagnosis (one form of MBD) to the logic-based languages cc and tec. The cc language allows models to be written using concurrent logic agents and constraints. Tec extends this by allowing temporal models and default logic to be expressed. The application of consistency-based diagnosis to cc represents an important contribution to the field of modelbased diagnosis because the concurrent nature of these languages correspond well to the multiple, concurrently operating components found in most artifacts and their use of constraints allow flexible, qualitative models to be written. These benefits are extended by tec, which allows temporal models exhibiting default behaviour to be realized. Together, cc and tec form a new approach to modelbased diagnosis that is declarative, expressive, flexible and able to diagnose temporal models with timeouts.
Compliant Fins for Locomotion in Granular Media
Creators: name: Li, Dongting
name: Huang, Sichuan
name: Tang, Yong
name: Marvi, Hamidreza
name: Tao, Junliang
name: Aukes, Daniel M.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Robotics (cs.RO)
subject: FOS: Computer and information sciences

description: In this paper, we present an approach to study the behavior of compliant plates in granular media and optimize the performance of a robot that utilizes this technique for mobility. From previous work and fundamental tests on thin plate force generation inside granular media, we introduce an origami-inspired mechanism with non-linear compliance in the joints that can be used in granular propulsion. This concept utilizes one-sided joint limits to create an asymmetric gait cycle that avoids more complicated alternatives often found in other swimming/digging robots. To analyze its locomotion as well as its shape and propulsive force, we utilize granular Resistive Force Theory (RFT) as a starting point. Adding compliance to this theory enables us to predict the time-based evolution of compliant plates when they are dragged and rotated. It also permits more rational design of swimming robots where fin design variables may be optimized against the characteristics of the granular medium. This is done using a Python-based dynamic simulation library to model the deformation of the plates and optimize aspects of the robot's gait. Finally, we prototype and test robot with a gait optimized using the modelling techniques mentioned above.
description: \c{opyright} 2021 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works
'A genuine Australian' : foot-stepping a life: a journey in pursuit of William Bradley Esq. of Goulburn
Creators: name: Day, Amanda J.
Publisher: name: The Australian National University
Year: 2010
Subjects: subject: DU172.B73 D39 2010
subject: Bradley, William, 1800-1868
subject: New South Wales History Biography1800-1868

description: William Bradley's death in 1868 at his home, Lindesay in Darling Point, signalled the end of a remarkable colonial career. A first generation, native-born Australian, born out of wedlock to an Irish convict mother and a former Sergeant in the NSW Corps in Windsor, Bradley was driven by the quest to become a respectable and respected colonial gentleman. While his life achievements are rarely noted in the historiography of early colonial Australia, his story is an important one that shaped a community on the Goulburn Plains and the Monaro and drove important political, scientific, agricultural and pastoral reforms. His story is worth telling. As the first elected member for the County of Argyle in 1843, Bradley aligned himself politically with W C. Wentworth and the 'squattocracy' without limiting his self-serving independence. Bradley overcame the 'birth stain' of convictism through the deliberate fostering of a business, political and social network. Eventually, the success of his quest took him to the very heart of the British establishment when he hosted HRH the Duke of Edinburgh in his harbour side mansion and as his colonial born daughters married into the British aristocracy. His descendents still occupy a seat in the House of Lords. This thesis rescues Bradley's career from the footnotes of colonial history. It charts his application of scientific, economic, social, financial, political, management, humanitarian, and moral principles. It records his quest for the respectability with which his parents did not provide him, both in the country of his birth and in the mother country. It is offered as a case study of the development of the Colony of New South Wales. The absence of private papers represents a challenge for the biographer that I have sought to overcome in three ways. First, by extensive (and conventional) research of archival and published sources, I have reconstructed Bradley's business empire and assessed his motivation by analysing his actions. Second, I have employed a method known as 'foot-stepping' to understand the context in which his life unfolded. Each chapter begins by recording my footsteps. And, finally, I have accepted and embraced the role of fiction in biography and 'bookended' each chapter with an imaginative meditation. The combination of approaches is offered as an example.
Estimation of Carbon Abundances in Metal-Poor Stars. I. Application to the "Strong G-band" stars of Beers, Preston, & Shectman
Creators: name: Rossi, Silvia
name: Beers, Timothy C.
name: Sneden, Chris
name: Sevastyanenko, Tatiana
name: Rhee, Jaehyon
name: Marsteller, Brian
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We develop and test a method for the estimation of metallicities ([Fe/H]) and carbon abundance ratios ([C/Fe]) for carbon-enhanced metal-poor (CEMP) stars, based on application of artificial neural networks, regressions, and synthesis models to medium-resolution (1-2 A) spectra and J-K colors. We calibrate this method by comparison with metallicities and carbon abundance determinations for 118 stars with available high-resolution analyses reported in the recent literature. The neural network and regression approaches make use of a previously defined set of line-strength indices quantifying the strength of the CaII K line and the CH G-band, in conjuction with J-K colors from the 2MASS Point Source Catalog. The use of near-IR colors, as opposed to broadband B-V colors, is required because of the potentially large affect of strong molecular carbon bands on bluer color indices. Using these methods we are able to reproduce the previously-measured [Fe/H] and [C/Fe] determinations with an accuracy of ~ 0.25 dex for stars in the metallicity interval -5.5 <= [Fe/H]} <= -1.0, and with 0.2 <= (J-K)o <= 0.8. At higher metallicity the CaII K line begins to saturate, especially for the cool stars in our program, hence this approach is not useful in some cases. As a first application, we estimate the abundances of [Fe/H] and [C/Fe] for the 56 stars identified as possibly carbon-rich, relative to stars of similar metal abundance, in the sample of "strong G-band" stars discussed by Beers, Preston, & Shectman. (abridged)
description: 51 pages, including 12 figures and 7 tables, accepted for publication in the Astronomical Journal
How macroeconomic policy has helped or hurt the economy of the Eurozone since the world financial crisis and recession 2008-09.
Creators: name: Ochola, Allan
Publisher: name: Zenodo
Year: 2022
Subjects: Macroeconomic policy,
Eurozone
Financial Crisis

description: The world economy in 2008-09 confronted its most downright financial shock that is likely to have considerable implications for the design and operation of economic institutions. Although national financial crises occur relatively periodically, global financial crises are exceptionally rare, this being only the third such global crisis since the Long Depression of 1873-791. Over the past periods, most of the crises have had their roots in developing and emerging countries, often ensuing from abrupt reversals in capital flows, and from loose domestic monetary and fiscal policies. In contrast, the 2008-09 global financial crisis has had its roots in the US following the bankruptcy of Lehman Brothers in September 2008 as a result of the sustained rise in asset prices, particularly house prices, on the back of excessively accommodative monetary policy and lax lending standards during 2002-2006 coupled with financial innovations that resulted in a large rise in mortgage credit to households, particularly low credit quality households2. This made the economic and financial environment very difficult for the world economy, the global financial system and for central banks3. While within the Eurozone the crisis does not make it to the headlines of the media anymore, except for Greece, it is still in full force.
Detection of Tidal Disruption Events around Direct Collapse Black Holes at High Redshifts with the James Webb Space Telescope
Creators: name: Regos, E.
name: Vinko, J.
name: Stermeczky, Z.
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: This is the third sequel in a series discussing the discovery of various types of extragalactic transients with the {\it James Webb Space Telescope} in a narrow-field ($\sim 0.1$ deg$^2$), moderately deep ($m_{AB} \sim 27$ mag) survey. In this part we focus on the detectability and observational characteristics of Direct Collapse Black Holes (DCBH) and Tidal Disruption Events (TDE) around them. We use existing models for DCBH accretion luminosities and spectra as well as for TDE light curves, and find that accreting DCBH seeds may be bright enough for detection up to $z \sim 7$ with JWST NIRCam imaging, TDEs of massive ($M \gtrsim 50$ Msol) stars around them can enhance the chance for discovering them as transient objects, although the rates of such events is low, a few per survey time. TDEs around non-accreting black holes of $M \sim 10^6$ Msol may also be detected at $z < 7$ redshifts in the redder NIRCam bands between 3 and 5 microns. It is also shown that accreting DCBHs appear separate from supernovae (SNe) on the NIRCam color-color plot, but TDEs from quiescent black holes fall in nearly the same color range as Superluminous Supernovae (SLSNe), which makes them more difficult to identify.
description: 17 pages, 11 figures, ApJ in press
Determining Liouvillian First Integrals for Dynamical Systems in the Plane
Creators: name: Avellar, J.
name: Duarte, L. G. S.
name: Duarte, S. E. S.
name: da Mota, L. A. C. P.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Mathematical Physics (math-ph)
subject: Classical Analysis and ODEs (math.CA)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: Here we present/implement an algorithm to find Liouvillian first integrals of dynamical systems in the plane. In \cite{JCAM}, we have introduced the basis for the present implementation. The particular form of such systems allows reducing it to a single rational first order ordinary differential equation (rational first order ODE). We present a set of software routines in Maple 10 for solving rational first order ODEs. The package present commands permitting research incursions of some algebraic properties of the system that is being studied.
To Study The Variation of Scale Factor In The Homogeneous Universe With k-Essence Scalar Field
Creators: name: Chakraborty, Banadipa
Publisher: name: Zenodo
Year: 2023
Subjects: Cosmology
Dark Energy
Accelerating Universe
k-essence scalar field
Scale Factor
General Relativity
Modified Matter Models
Early Universe

description:  This research derives a Lagrangian for an inhomogeneous dark energy scalar field in a spherical spacetime metric. Solutions demonstrate that under certain assumptions, the inhomogeneous metric reduces to the standard FLRW metric used in cosmology. Relationships revealed between the scalar field, the scale factor, and cosmic expansion suggest dark energy determines the geometry of spacetime. With further observational data and modeling, this approach shows promise for explaining the accelerating expansion of the universe.
description: Here, I have studied the variation between the time rate of homogeneous part ofthe k-essence scalar field ϕ˙2(t) with the scale factor a(t).The late time accelerationof the universe implies the change in scale factor a(t). The spherically symmetrick-essence scalar field ϕ(r, t) = ϕ1(r) + ϕ2(t) is taken here. I have obtained arelation between ϕ˙2(t) and a(t) using the solution obtained from the Lagrangianequation approximated in an FLRW universe. To plot the relation, I have takenthe range of scale factor a(t) to be in between 0 and 1. I have shown that thevariation of ϕ˙2(t) depends on parameters B and D. I have taken different set ofvalues for those parameters and produced several plots between ϕ˙2(t) and a(t).The results have shown that for smaller values of D, ϕ˙2(t) becomes independentof the scale factor a(t). For negative values of B, the ϕ˙2(t) becomes asymptoticwith the increase of scale factor a(t).
THE MECHANISMS OF VIRALITY IN ONLINE PUBLIC DISCOURSE
Creators: name: Harrell, Nicholas B
Publisher: name: Purdue University Graduate School
Year: 2025
Subjects: classificationCode: 460806
subject: Human-computer interaction
classificationCode: 460899
subject: Human-centred computing not elsewhere classified
classificationCode: 461102
subject: Context learning
classificationCode: 461103
subject: Deep learning

description: The rapid proliferation of online discourse, particularly within social networks, has increased the spread of information at unprecedented rates. Although viral content often captures public attention, the underlying mechanisms driving its dissemination on social media remain challenging to characterize. This study highlights how value-laden features can be used to detect the potential of certain discourse on social media to become viral. Using a combination of Natural Language Processing (NLP) techniques and social network analysis, this research identifies patterns of user engagement that predict the likelihood of content achieving viral status. This study shows statistically significant differences in the value profile between the high and low engagement profiles of many topics on different alternative social media platforms. The results are further validated through predictive machine learning models. These results with discussion contribute to ethical concerns and implications related to the implementation of content generating AI technologies in online discourse.
The Australian Defence Force and the executive power : limiting the indefinable?
Creators: name: Moore, Cameron Alastair
Publisher: name: The Australian National University
Year: 2015

description: This thesis seeks to establish the limits to the exercise of executive power by the Australian Defence Force (ADF). It will argue that there are identifiable limits, although they cannot be precise limits because executive power is meant to deal with the unpredictable and the external. Within Australia, these limits turn on two key concepts, the written Constitution and necessity, as informed by legal history and theory. It is not possible to effect an enduring change to the Constitution through executive power, nor can executive power exceed the limits of Commonwealth legislative power. Executive power should also not operate where parliament has enabled the ADF to act through statutory power, which means that a resort to executive power is unnecessary. The history and theory of executive power recognise that it is designed to respond to contingencies, the unpredictable, or Fortuna. It is not possible to have a case authority for every possible eventuality and, given the lack of litigation on some of these questions, there is little authority at all. Instead, the exercise of such powers is limited primarily by necessity. The circumstances of the case dictate the limits of the power, which can temporarily displace the written law, as with martial law, or provide a standing exception to it, as with war. This is a concept of necessity which operates upon those powers which only the Crown can exercise and which in this thesis are the identified prerogative powers with respect to martial law, internal emergencies, war and external affairs as well as nationhood power to some extent in respect of internal security. Beyond the realm, the exercise of executive power by the ADF is much less constrained because it does not interfere with the federal structure or the separation of powers. The limits are only those statutes which apply extra-territorially, although they should be interpreted to allow prerogative power to operate where it has not been expressly curtailed or extinguished. Act of State doctrine should also operate to cover any action by the ADF sufficiently connected to the purpose of its mission.
A local-realistic model for quantum theory
Creators: name: Raymond-Robichaud, Paul
Publisher: name: arXiv
Year: 2020
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We provide a rigorous definition of local realism. We show that the universal wave function cannot be a complete description of a local reality. Finally, we construct a local-realistic model for quantum theory.
description: 52 pages, no figures
Hahn, Ferdinand: Exegetische Beiträge zum ökumenischen Gespräch
Creators: name: Klein, Hans
Publisher: name: Ökumenische Rundschau
Year: 2025

description: Ökumenische Rundschau, Bd. 36 Nr. 1 (1987): Ökumenische Rundschau, Band 36, Heft 1
Symmetry protected topological phases beyond groups: The q-deformed bilinear-biquadratic spin chain
Creators: name: Quella, Thomas
Publisher: name: arXiv
Year: 2020
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: We study the phase diagram of the $SO_q(3)$ quantum group invariant spin-1 bilinear-biquadratic spin chain for real values of $q>1$. Numerical computations suggest that the chain has at least three clearly distinguished phases: A chiral analogue of the Haldane phase, a dimerized phase and a ferromagnetic phase. In contrast, the counterpart of the extended critical region that is known to exist for $q=1$ remains elusive. Our results show that the Haldane phase fails to exhibit a two-fold degeneracy in the entanglement spectrum but that the degeneracy is restored upon a suitable $q$-deformation of the entanglement Hamiltonian which can be interpreted as a Zeeman field. The structure of the phase diagram is confirmed through analytical calculations in the extreme anisotropic limit $q\to\infty$. Our results suggest that symmetries of the form $U_q[su(2)]$ for distinct choices of $q$ should be interpreted as one single family instead of separate symmetries when defining SPT phases, leading naturally to the notion of a qSPT phase.
description: 14 pages, 7 figures, v2: the entanglement scaling is analyzed for more values of the deformation parameter. Version as submitted to and accepted in Phys Rev B
Text: Fiesta de la Chonta
Creators: name: Quenamá, Victor
name: Dabkowski, Maksymilian
name: Aguinda, Shen
Publisher: name: California Language Archive, University of California, Berkeley
Year: 2021
Subjects: subject: con

description: The Feast of the Palm Shoot (Fiesta de la Chonta), how they celebrated it in the past, and how it changed--a comparison.
Open Fermi-Hubbard model: Landauer's vs. master equation approaches
Creators: name: Kolovsky, A. R.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We introduce a simple model for the quantum transport of Fermi particles between two contacts connected by a lead. It generalizes the Landauer formalizm by explicitly taken into account the relaxation processes in the contacts. We calculate the contact resistance and non-equilibrium quasi-momentum distribution of the carriers in the lead and show that they strongly depend on the rate of relaxation processes.
description: journal version plus Appendix
Instability of brane cosmological solutions with flux compactifications
Creators: name: Minamitsuji, Masato
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Astrophysics (astro-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We discuss the stability of the higher-dimensional de Sitter (dS) brane solutions with two-dimensional internal space in the Einstein-Maxwel theory. We show that an instability appears in the scalar-type perturbations with respect to the dS spacetime. We derive a differential relation which has the very similar structure to the ordinary laws of thermodynamics as an extension of the work for the six-dimensional model [20]. In this relation, the area of dS horizon (integrated over the two internal dimensions) exactly behaves as the thermodynamical entropy. The dynamically unstable solutions are in the thermodynamically unstable branch. An unstable dS compactification either evolves toward a stable configuration or two-dimensional internal space is decompactified. These dS brane solutions are equivalent to the accelerating cosmological solutions in the six-dimensional Einstein-Maxwell-dilaton theory via dimensional reduction. Thus, if the seed higher-dimensional solution is unstable, the corresponding six-dimensional solution is also unstable. From the effective four-dimensional point of view, a cosmological evolution from an unstable cosmological solution in higher dimensions may be seen as a process of the transition from the initial cosmological inflation to the current dark energy dominated Universe.
description: 11 pages, 3 figures, references added, to appear in CQG
Exact solution to perturbative conformal cosmology in the recombination era
Creators: name: Mannheim, Philip D.
Publisher: name: arXiv
Year: 2020
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We study cosmological perturbation theory in the cosmology associated with conformal gravity, establish the validity of the decomposition theorem for it, and then use the theorem to provide an exact solution to the theory in the recombination era. Central to our approach is the use of a fully gauge invariant formulation of the cosmological fluctuations equations. In the recombination era not only is perturbation theory applicable, because of its specific structure in the conformal case the fluctuation equations are found to greatly simplify. Using a master equation for scalar, vector and tensor fluctuation modes we show that the radial equations for the three-dimensional vector and tensor modes are respectively the same as those of scalar modes in five and seven spatial dimensions. This enables us to construct normalization conditions for the three-dimensional modes.
description: Expanded version. 41 pages. Final version, to appear in Phys. Rev. D
Energetics of a strongly correlated Fermi gas
Creators: name: Tan, Shina
Publisher: name: arXiv
Year: 2005
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: The energy of the two-component Fermi gas with the s-wave contact interaction is a simple linear functional of its momentum distribution: $$E_\text{internal}=\hbar^2ΩC/4πam+\sum_{\vect kσ}(\hbar^2 k^2/2m)(n_{\vect kσ}-C/k^4)$$ where the external potential energy is not included, $a$ is the scattering length, $Ω$ is the volume, $n_{\vect kσ}$ is the average number of fermions with wave vector $\vect k$ and spin $σ$, and $C\equiv\lim_{\vect k\to\infty} k^4 n_{\vect k\up} =\lim_{\vect k\to\infty} k^4 n_{\vect k\down}$. This result is a \textit{universal identity}. Its proof is facilitated by a novel mathematical idea, which might be of utility in dealing with ultraviolet divergences in quantum field theories. Other properties of this Fermi system, including the short-range structure of the one-body reduced density matrix and the pair correlation function, and the dimer-fermion scattering length, are also studied.
description: 28 pages, 1 figure
H1jet, a fast program to compute transverse momentum distributions
Creators: name: Lind, Alexander
name: Banfi, Andrea
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We present H1jet, a fast code that computes the total cross section and differential distribution in the transverse momentum of a colour singlet. In its current version, the program implements only leading-order $2\to 1$ and $2\to 2$ processes, but could be extended to higher orders. We discuss the processes implemented in H1jet, give detailed instructions on how to implement new processes, and perform comparisons to existing codes. This tool, mainly designed for theorists, can be fruitfully used to assess deviations of selected new physics models from the Standard Model behaviour, as well as to quickly obtain distributions of relevance for Standard Model phenomenology.
description: 25 pages, 8 figures, published version
Stability and topology of scale-free networks under attack and defense strategies
Creators: name: Gallos, Lazaros K.
name: Cohen, Reuven
name: Argyrakis, Panos
name: Bunde, Armin
name: Havlin, Shlomo
Publisher: name: arXiv
Year: 2005
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Physics and Society (physics.soc-ph)
subject: FOS: Physical sciences

description: We study tolerance and topology of random scale-free networks under attack and defense strategies that depend on the degree k of the nodes. This situation occurs, for example, when the robustness of a node depends on its degree or in an intentional attack with insufficient knowledge on the network. We determine, for all strategies, the critical fraction p_c of nodes that must be removed for disintegrating the network. We find that for an intentional attack, little knowledge of the well-connected sites is sufficient to strongly reduce p_c. At criticality, the topology of the network depends on the removal strategy, implying that different strategies may lead to different kinds of percolation transitions.
description: Accepted in PRL
Development of a model of invivo angiogenesis : murine subutaneous matrigel sac model
Creators: name: Liyanage, Chandika
Publisher: name: The Australian National University
Year: 2010
Subjects: subject: QP106.6 .L59 2010
subject: Blood-vessels Growth
subject: Neovascularization
subject: Muridae
subject: Biological Assay Methodology

description: Angiogenesis, the formation of new blood vessels, has become a broad subject and is a very active area for current research. It has a pivotal role in many disease processes. The disturbance of the fine balance of vascularity in the body, is the pathological basis for these diseases. Angiogenesis assays are an important tool for studying both the mechanisms of angiogenesis and the potential development of therapeutic strategies to modulate neovascularisation. In-vivo angiogenesis assays are considered to be the most informative of these but are often expensive, time consuming and require specialist training to perform. The main technical challenge in any study of angiogenesis is the selection of the most appropriate assay. The ideal angiogenesis assay would be robust, rapid, and reproducible with reliable readouts, automated computational analysis, and multi-parameter assessment, including positive and negative controls and should relate directly to results seen in the clinic. Despite the increasing numbers of both in vitro and in vivo assays, a 'gold-standard' angiogenesis assay has yet to be developed. Objectives of this research project was to develop an in-vivo angiogenesis assay which is both inexpensive and technically less demanding for quantification of compounds that affect angiogenesis. This thesis includes the process of developing the model, which started off from an air sac in a rodent model and evolved into a subcutaneous matrigel sac model. The subcutaneous fibrous sac which was injected with matrigel treated with bFGF at 100ng/{u03BC}l generated angiogenesis which could be measured and modulated. After establishment ofthe model it was tested with both pro and anti angiogenic compounds with known in vitro and in vivo activity. The results of these tests are encouraging as the model has reproduced anticipated results. Thus we have developed an in-expensive assay which is not technically demanding and enables the researcher to access angiogenesis over differing time points, trial pro- and antiangiogenic compounds and cell lines, in a matrix which is of a consistent shape and initially devoid of vessels. The next set of experiments includes more experiments with angiogenic modulators and also to test substances of unknown in vivo angiogenic potential.
Kinematics of gas and stars in circumnuclear star-forming regions of early type spirals
Creators: name: Hagele, Guillermo F.
name: Diaz, Angeles I.
name: Cardaci, Monica V.
name: Terlevich, Elena
name: Terlevich, Roberto
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: (Abbr.) We present high resolution (R~20000) spectra in the blue and the far red of cicumnuclear star-forming regions (CNSFRs) in three early type spirals (NGC3351, NGC2903 and NGC3310) which have allowed the study of the kinematics of stars and ionized gas in these structures and, for the first time, the derivation of their dynamical masses for the first two. In some cases these regions, about 100 to 150 pc in size, are seen to be composed of several individual star clusters with sizes between 1.5 and 4.9 pc estimated from Hubble Space Telescope (HST) images. The stellar dispersions have been obtained from the Calcium triplet (CaT) lines at $λλ$ 8494,8542,8662 Å, while the gas velocity dispersions have been measured by Gaussian fits to the H$β$ and [OIII] $λλ$ 5007 Ålines on the high dispersion spectra. Values of the stellar velocity dispersions are between 30 and 68 km/s. We apply the virial theorem to estimate dynamical masses of the clusters, assuming that systems are gravitationally bounded and spherically symmetric, and using previously measured sizes. The measured values of the stellar velocity dispersions yield dynamical masses of the order of 10$^7$ to 10$^8$ solar masses for the whole CNSFRs. Stellar and gas velocity dispersions are found to differ by about 20 to 30 km/s with the H$β$ emission lines being narrower than both the stellar lines and the [OIII] $λλ$ 5007 Ålines. The twice ionized oxygen, on the other hand, shows velocity dispersions comparable to those shown by stars, in some cases, even larger. We have found indications of the presence of two different kinematical components in the ionized gas of the regions...
description: 4 pages, proceeding of the meeting "Young massive star clusters - Initial conditions and environments", Granada, Spain, 2007
Single-parameter aging in a binary Lennard-Jones system
Creators: name: Mehri, Saeed
name: Ingebrigtsen, Trond S.
name: Dyre, Jeppe C.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Materials Science (cond-mat.mtrl-sci)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: This paper studies physical aging by computer simulations of a 2:1 Kob-Andersen binary Lennard-Jones mixture, a system that is less prone to crystallization than the standard 4:1 composition. Starting from thermal-equilibrium states, the time evolution of the following four quantities is monitored following up and down jumps in temperature: the potential energy, the virial, the average squared force, and the Laplacian of the potential energy. Despite the fact that significantly larger temperature jumps are studied here than in previous experiments, to a good approximation all four quantities conform to the single-parameter-aging scenario derived and validated for small jumps in experiments [Hecksher et al., J. Chem. Phys. 142, 241103 (2015)]. As a further confirmation of single-parameter aging with a common material time for the different quantities monitored, their relaxing parts are found to be almost identical for all temperature jumps.
Renormalons beyond the Borel plane
Creators: name: Cavalcanti, Erich
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: The renormalon singularities are a known source of the divergent behavior of asymptotic perturbative series from field theoretical models. These singularities live in the Borel plane and are responsible for ambiguities in the physical plane. We propose that field theories can have renormalons beyond the usual first Borel plane. We show an example with a scalar field theory where, considering a chain of cat's eyes diagrams, the model develops a Gevrey-3 asymptotic series.
description: 2 figures, 9 pages
Detecting gravitational waves from test-mass bodies orbiting a Kerr black hole with P-approximant templates
Creators: name: Porter, Edward K.
Publisher: name: arXiv
Year: 2005
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: In this study we apply post-Newtonian (T-approximants) and resummed post-Newtonian (P-approximants) to the case of a test-particle in equatorial orbit around a Kerr black hole. We compare the two approximants by measuring their effectualness (i.e. larger overlaps with the exact signal), and faithfulness (i.e. smaller biases while measuring the parameters of the signal) with the exact (numerical) waveforms. We find that in the case of prograde orbits, T-approximant templates obtain an effectualness of ~0.99 for spins q < 0.75. For 0.75 < q < 0.95, the effectualness drops to about 0.82. The P-approximants achieve effectualness of > 0.99 for all spins up to q = 0.95. The bias in the estimation of parameters is much lower in the case of P-approximants than T-approximants. We find that P-approximants are both effectual and faithful and should be more effective than T-approximants as a detection template family when q > 0. For q < 0 both T- and P-approximants perform equally well so that either of them could be used as a detection template family. However, for parameter estimation, the P-approximant templates still outperforms the T-approximants.
description: 11 Pages - 9 figures. Accepted for publication. Proceedings of GWDAW 9. Special edition of Classical and Quantum Gravity