cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Fannie Mae's National Housing Survey Monthly Home Purchase Sentiment Index (HPSI) and Key Indicators-December, 2022 (a subset of the complete monthly Fannie Mae National Housing Survey)
Creators: name: Foundation, Fannie Mae
Publisher: name: Roper Center for Public Opinion Research
Year: 2024

description: Economy on right/wrong track (1); personal financial situation (1); good/bad time to buy a house (1); good/bad time to sell a house (1); home price changes (3); rental price changes (3); mortgage interest rate changes (1); ability to obtain a home mortgage today (1); current homeownership status (1); renting vs. buying a home in the future (1); concern about unemployment (1); change in income (1).
Continuous time random walk for open systems: Fluctuation theorems and counting statistics
Creators: name: Esposito, Massimiliano
name: Lindenberg, Katja
Publisher: name: arXiv
Year: 2008
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We consider continuous time random walks (CTRW) for open systems that exchange energy and matter with multiple reservoirs. Each waiting time distribution (WTD) for times between steps is characterized by a positive parameter a, which is set to a=1 if it decays at least as fast as t^{-2} at long times and therefore has a finite first moment. A WTD with a<1 decays as t^{-a-1}. A fluctuation theorem for the trajectory quantity R, defined as the logarithm of the ratio of the probability of a trajectory and the probability of the time reversed trajectory, holds for any CTRW. However, R can be identified as a trajectory entropy change only if the WTDs have a=1 and satisfy separability (also called "direction time independence"). For nonseparable WTDs with a=1, R can only be identified as a trajectory entropy change at long times, and a fluctuation theorem for the entropy change then only holds at long times. For WTDs with 0
description: 1 figure ; v2: version accepted in Phys.Rev.E
title: Emergentne kształtowanie relacji między malarstwem ściennym a wewnętrzem architektonicznym na przykładzie projektu wnętrza Kościoła Pw. Wniebowstąpienia Pańskiego w Przyłękach
Creators: name: Drozdowicz, Piotr Paweł
Publisher: name: Publishing House of Poznan University of Technology
Year: 2021

description: Zeszyty Naukowe Politechniki Poznańskiej. Architektura, Urbanistyka, Architektura wnętrz, 5, 93-109
The $U$ boson, interpolating between a generalized dark photon or dark $Z$, an axial boson and an axionlike particle
Creators: name: Fayet, Pierre
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: A light boson $U$ from an extra $U(1)$ interpolates between a generalized dark photon coupled to $Q,\ B$ and $L_i$ (or $B-L$), plus possibly dark matter, a dark $Z$ coupled to the $Z$ current, and one axially coupled to quarks and leptons. We identify the corresponding $U(1)_F$ symmetries, with $F= γ_Y Y+γ_B B+γ_{L_i}L_i+γ_A F_A+γ_{F'}F'\!+γ_d F_d$, $F_d$ acting in a dark sector and $F'$ on possible semi-inert BEH doublets uncoupled to quarks and leptons. The $U$ current is obtained from the $U(1)_F $ and $Z$ currents, with a mixing determined by the spin-0 BEH fields. The charge $Q_U$ of chiral quarks and leptons is a combination of $Q,\ B,\ L_i$ and $T_{3L}$ with the axial $F_A$. It involves in general isovector and isoscalar axial terms, in the presence of two BEH doublets. A longitudinal $U$ with axial couplings has enhanced interactions, and behaves much as an axionlike particle. Its axial couplings $g_A$, usually restricted to $< 2\times 10^{-7} m_U$(MeV), lead to effective pseudoscalar ones $g_P= g_A\times 2m_{q,l}\,/m_U=2^{1/4}\, G_F^{1/2}\, m_{q,l} \ A_\pm $. $\,A_\pm$ is proportional to an invisibility parameter $r=\cosθ_A$ induced by a singlet v.e.v., possibly large and allowing the $U$ to be very weakly interacting. This allows for a very small gauge coupling, expressed with two doublets and a singlet as $g"\!/4\simeq 2\times 10^{-6} m_U$(MeV) $ r/\sin 2β$. We discuss phenomenological implications for meson decays, neutrino interactions, atomic-physics parity violation, naturally suppressed $π^0\toγU$ decays, etc.. The $U$ boson fits within the grand-unification framework, in symbiosis with a $SU(4)_{\rm es }$ electrostrong symmetry broken at the GUT scale, with $Q_U$ depending on $Q,\ B-L,\ F_A$ and $T_{3A}$ through three parameters $γ_Y,\ γ_A$ and $η$.
description: 25 pages
Training for art-related employment: Community support for Halifax’s Art School, 1887-1943
Creators: name: Soucy, Donald
Publisher: name: University of British Columbia
Year: 2009

description: The most surprising outcome from the Victoria School of Art and Design's first half century is that it survived into its second. How it survived, and how it almost failed to, is the subject of this thesis. The main argument is that community support for the VSAD, or lack of it, was based more on pragmatic concerns, rather than on whether people liked the art being produced. Among those concerns, the most talked about was art training for employable skills. Led by Anna Leonowens, who later became the subject of the musical The King and I, well-to-do citizens in Halifax, Nova Scotia founded the VSAD in 1887. In 1925 the school changed its name to the Nova Scotia College of Art. Its current name, the Nova Scotia College of Art and Design, came in 1969, the year that the College became what was then the only autonomous degree granting art institution in Canada. As part of an international movement, the VSAD shared its late nineteenth century origins with similar art schools throughout North America, Europe, Britain and its colonies. Many of these schools also shared common purposes: to sharpen the graphic skills of industrial designers, to provide instruction in the fine and decorative arts, and to train drawing teachers for public and private schools. Of the different groups supporting the Halifax school, women and their organizations were the most consistent and consequential, especially Halifax's Local Council of Women. A properly funded art school, they argued, could generate jobs, stimulate economic gains, and foster higher standards of civic culture within the community. This study looks at the VSAD's supporters, teachers, and administrators during its first half century. It describes how the school, with its inadequate enrolment, budget, and space, played a limited role in generating art-related employment before the Great War. It is only with the principalship of Elizabeth Styring Nutt from 1919 to 1943, with her strong community connections and decades-long commitment to training artist-workers, that the school finally gained relative security and success.
By myself but not alone: Agency, creativity, and extended musical historicity
Creators: name: van der Schyff, Dylan
name: Schiavio, Andrea
name: Gallagher, Sean
name: Ryan, Kevin
name: Moran, Nikki
Publisher: name: The University of Melbourne
Year: 2024
Subjects: classificationCode: 360301
subject: Music cognition
classificationCode: 360302
subject: Music composition and improvisation
classificationCode: 360303
subject: Music education
classificationCode: 360304
subject: Music performance

description: In this paper we offer a preliminary framework that highlights the relational nature of solo music-making, and its associated capacity to influence the constellation of habits and experiences one develops through acts of musicking. To do so, we introduce the notion of extended musical historicity and suggest that when novice and expert performers engage in individual musical practices, they often rely on an extended sense of agency which permeates their musical experience and shapes their creative outcomes. To support this view, we report on an exploratory, qualitative study conducted with novice and expert musicians. This was designed to elicit a range of responses, beliefs, experiences and meanings concerning the main categories of agency and creativity. Our data provide rich descriptions of solitary musical practices by both novice and expert performers, and reveal ways in which these experiences involve social contingencies that appear to generate or transform creative musical activity. We argue that recognition of the interactive components of individual musicking may shed new light on the cognition of solo and joint music performance, and should inspire the development of novel conceptual and empirical tools for future research and theory.
Systems of Hess-Appel'rot type
Creators: name: Dragovic, Vladimir
name: Gajic, Borislav
Publisher: name: arXiv
Year: 2006
Subjects: subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences
subject: 70E17; 70H06; 14H40

description: We construct higher-dimensional generalizations of the classical Hess-Appel'rot rigid body system. We give a Lax pair with a spectral parameter leading to an algebro-geometric integration of this new class of systems, which is closely related to the integration of the Lagrange bitop performed by us recently and uses Mumford relation for theta divisors of double unramified coverings. Based on the basic properties satisfied by such a class of systems related to bi-Poisson structure, quasi-homogeneity, and conditions on the Kowalevski exponents, we suggest an axiomatic approach leading to what we call the "class of systems of Hess-Appel'rot type".
description: 40 pages. Comm. Math. Phys. (to appear)
What is the Criterion for a Strong First Order Electroweak Phase Transition in Singlet Models?
Creators: name: Ahriche, Amine
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: It is widely believed that the existence of singlet scalars in some Standard Model extensions can easily make the electroweak phase transition strongly first order, which is needed for the electroweak baryogenesis scenario. In this paper, we will examine the strength of the electroweak phase transition in the simplest extension of the Standard Model with a real singlet using the sphaleron energy at the critical temperature. We find that the phase transition is stronger by adding a singlet; and also that the criterion for a strong phase transition Omega (Tc)/Tc>1, where Omega =(v^2+(x-x0)^2)^(1/2) and x (x0) is the singlet vev in the broken (symmetric) phase, is not valid for models containing singlets, even though often used in the literature. The usual condition vc/Tc>1 is more meaningful, and it is satisfied for a large part of the parameter space for physically allowed Higgs masses.
description: 9 pages, 5 figures
Virial shocks are suppressed in cosmic ray-dominated galaxy halos
Creators: name: Ji, Suoqing
name: Kereš, Dušan
name: Chan, T. K.
name: Stern, Jonathan
name: Hummels, Cameron B.
name: Hopkins, Philip F.
name: Quataert, Eliot
name: Faucher-Giguère, Claude-André
Publisher: name: arXiv
Year: 2020
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We study the impact of cosmic rays (CRs) on the structure of virial shocks, using a large suite of high-resolution cosmological FIRE-2 simulations accounting for CR injection by supernovae. In massive ($M_{\rm halo} \gtrsim 10^{11}\,M_{\odot}$), low-redshift ($z\lesssim 1-2$) halos, which are expected to form "hot halos" with slowly-cooling gas in quasi-hydrostatic equilibrium (with a stable virial shock), our simulations without CRs do exhibit clear virial shocks. The cooler phase condensing out from inflows becomes pressure-confined to over-dense clumps, embedded in low-density, volume-filling hot gas whose cooling time is much longer than inflow time. The gas thus transitions sharply from cool free-falling inflow, to hot and thermal-pressure supported at approximately the virial radius ($\approx R_{\rm vir}$), and the shock is quasi-spherical. With CRs, we previously argued that halos in this particular mass and redshift range build up CR-pressure-dominated gaseous halos. Here, we show that when CR pressure dominates over thermal pressure, there is no significant virial shock. Instead, inflowing gas is gradually decelerated by the CR pressure gradient and the gas is relatively subsonic out to and even beyond $R_\mathrm{vir}$. Rapid cooling also maintains sub-virial temperatures in the inflowing gas within $\sim R_\mathrm{vir}$.
description: 15 pages, 10 figures, submitted to MNRAS
Canadian Studies Institute Newsletter: Volume 1, No. 1: Spring 2009
Creators: Canadian Studies Institute
Publisher: name: University of Alberta Library
Year: 2009

In this issue:

Message from the Director

Pierre Savard Award

Canadian Studies Institute Activities

Edmund Aunger: French, Official Language of Alberta

International Council for Canadian Studies

Academic Council of the Canadian Studies Institute

Chantal Hébert: The Rise of the Right in Canada and in Québec

Claudette Tardif: The Francophone Political Arena

Hugh Segal: Linguistic duality, pluralism and freedom

André Pratte: Reconquérir le Canada

Pierre Nepveu: Québec and North American Francophonies

Janine Krieber: The State, Ideologies and Terrorism

Dyane Adam: Today’s Canadian Linguistic Duality

Peter Lougheed—Inauguration of the Canadian Studies Institute

Stéphane Dion Meets the Community at CSJ

Stephen Lewis: Canada’s Status in the World

Vision and Mandate
Yang-Mills detour complexes and conformal geometry
Creators: name: Gover, A. Rod
name: Somberg, Petr
name: Soucek, Vladimir
Publisher: name: arXiv
Year: 2006
Subjects: subject: Differential Geometry (math.DG)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: Mathematical Physics (math-ph)
subject: FOS: Mathematics
subject: FOS: Physical sciences
subject: 53A30 (Primary); 53A55 (Secondary)

description: Working over a pseudo-Riemannian manifold, for each vector bundle with connection we construct a sequence of three differential operators which is a complex (termed a Yang-Mills detour complex) if and only if the connection satisfies the full Yang-Mills equations. A special case is a complex controlling the deformation theory of Yang-Mills connections. In the case of Riemannian signature the complex is elliptic. If the bundle connection respects a metric on the vector bundle then the complex is formally self-adjoint. In dimension 4 the complex is conformally invariant and generalises, to the full Yang-Mills setting, the composition of (two operator) Yang-Mills complexes for (anti-)self-dual Yang-Mills connections. Via a prolonged system and tractor connection a diagram of differential operators is constructed which, when commutative, generates differential complexes of natural operators from the Yang-Mills detour complex. In dimension 4 this construction is conformally invariant and is used to yield two new sequences of conformal operators which are complexes if and only if the Bach tensor vanishes everywhere. In Riemannian signature these complexes are elliptic. In one case the first operator is the twistor operator and in the other sequence it is the operator for Einstein scales. The sequences are detour sequences associated to certain Bernstein-Gelfand-Gelfand sequences.
description: Final version. To appear: Communications of Mathematical Physics. 23 pages
Heat treatment of binder jet printed 17–4 PH stainless steel for subsequent deposition of tribo-functional diamond-like carbon coatings
Creators: name: Tillmann, Wolfgang
name: Lopes Dias, Nelson Filipe
name: Stangier, Dominic
name: Schaak, Christopher
name: Höges, Simon
Publisher: name: TU Dortmund
Year: 2021
Subjects: subject: Additive manufacturing
subject: Binder jetting
subject: 17-4 PH
subject: Diamond-like carbon
subject: Sputtering
subject: Tribology
subject: 620
subject: 670
subject: Rapid Prototyping
subject: 3D-Druck
subject: Martensitischer Stahl
subject: Diamantähnlicher Kohlenstoff
subject: Sputtern
subject: Tribologie

description: Diamond-like carbon (DLC) coatings deposited on additively manufactured steel greatly improve the tribological properties. However, a high substrate hardness is crucial to sustaining high mechanical loads in the tribological contact. Herein, the heat treatment of binder jet printed 17–4 PH enhances the hardness from 24 to 39 HRC. Binder jet printed 17–4 PH substrates are coated by DLC of the types hydrogen-free amorphous carbon (a-C) of ∼23 GPa and hydrogenated amorphous carbon (a-C:H) of ∼20 GPa. The influence of the heat treatment on the tribo-mechanical properties of the DLC coatings is investigated. 17–4 PH demonstrates high friction and wear against steel counterparts, but the wear rate is reduced from 693 ± 43 × 10–6 mm3/Nm to 492 ± 41 × 10-6 mm3/Nm by heat treating the steel. Both a–C and a–C:H are effective in reducing the friction and wear with wear rates below 0.3 × 10–6 mm3/Nm. The a–C and a–C:H coatings demonstrate lower plastic wear on heat treated 17–4 PH due to the higher substrate hardness. Consequently, the heat treatment is an essential process step to ensure maximum tribological functionality of the DLC coating on additively manufactured 17–4 PH steel.
description: Materials and design;213
Safety assessment of food and feed derived from GM crops: problem formulation
Creators: name: Rios, Danilo Fernandez
name: Salomón, María José Ibarra
name: Candia, Nidia Benítez
name: Cristaldo, Rosa Oviedo De
name: Soerensen, Cristina
name: Irazusta, Juana Zaracho De
name: Bertoni, Santiago
name: Ulke, Gabriela
name: Vicien, Carmen
name: Levitus, Gabriela
name: Rubinstein, Clara
name: Alonso, Monica Garcia
Publisher: name: F1000Research
Year: 2015

description: All GE organisms meant for use as food and feed must be evaluated regarding their safety for humans and other animals. International organizations such as the Food and Agriculture Organization (FAO), the World Health Organization (WHO) and the Organization for Economic Cooperation and Development (OECD) have been facilitating the harmonization of the assessment methods for food and feed safety. The Codex Alimentarius Commision has developed harmonized international food standards, guidelines and codes of practice, and has promoted the coordination of all food standards undertaken by international governmental and non-governmental organizations. The assessments carried out today to determine the safety of genetically engineered crops used as food and feed follow those standards. Thus, the safety assessments must comply with every requirement outlined in the country’s regulatory framework and provide robust, clearly stated scientific information in order to facilitate the decision-making process. Using the problem-formulation methodology in safety assessments provides a tool to ensure that the assessments provide the necessary information for decision-making. Problem formulation takes into account the national protection goals and the key regulatory requirements, and drives the compilation of relevant information for the assessment. Given the wealth of information on assessment methods and the existence of internationally agreed consensus documents, the aim of this review article is not to provide a complete guide on how to conduct safety assessments of food and feed. The aim is to demonstrate how problem formulation can be used in these assessments to facilitate decision-making.
GLASS: A Citizen-Centric Distributed Data-Sharing Model within an e-Governance Architecture
Creators: name: Lo, Owen
name: Buchanan, William J.
name: Sayeed, Sarwar
name: Papadopoulos, Pavlos
name: Pitropakis, Nikolaos
name: Chrysoulas, Christos
Publisher: name: arXiv
Year: 2022
Subjects: subject: Cryptography and Security (cs.CR)
subject: Computers and Society (cs.CY)
subject: FOS: Computer and information sciences

description: E-governance is a process that aims to enhance a government's ability to simplify all the processes that may involve government, citizens, businesses, and so on. The rapid evolution of digital technologies has often created the necessity for the establishment of an e-Governance model. There is often a need for an inclusive e-governance model with integrated multiactor governance services and where a single market approach can be adopted. e-Governance often aims to minimise bureaucratic processes, while at the same time including a digital-by-default approach to public services. This aims at administrative efficiency and the reduction of bureaucratic processes. It can also improve government capabilities, and enhances trust and security, which brings confidence in governmental transactions. However, solid implementations of a distributed data sharing model within an e-governance architecture is far from a reality; hence, citizens of European countries often go through the tedious process of having their confidential information verified. This paper focuses on the sinGLe sign-on e-GovernAnce Paradigm based on a distributed file-exchange network for security, transparency, cost-effectiveness and trust (GLASS) model, which aims to ensure that a citizen can control their relationship with governmental agencies. The paper thus proposes an approach that integrates a permissioned blockchain with the InterPlanetary File System (IPFS). This method demonstrates how we may encrypt and store verifiable credentials of the GLASS ecosystem, such as academic awards, ID documents and so on, within IPFS in a secure manner and thus only allow trusted users to read a blockchain record, and obtain the encryption key. This allows for the decryption of a given verifiable credential that stored on IPFS. This paper outlines the creation of a demonstrator that proves the principles of the GLASS approach.
description: Sensors 2022, 22(6), 2291; https://doi.org/10.3390/s22062291
First multi-redshift limits on post-Epoch of Reionization (post-EoR) 21 cm signal from z = 1.96 - 3.58 using uGMRT
Creators: name: Chakraborty, Arnab
name: Datta, Abhirup
name: Roy, Nirupam
name: Bharadwaj, Somnath
name: Choudhury, Tirthankar Roy
name: Datta, Kanan K.
name: Pal, Srijita
name: Choudhury, Madhurima
name: Choudhuri, Samir
name: Dutta, Prasun
name: Sarkar, Debanjan
Publisher: name: arXiv
Year: 2020
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Measurement of fluctuations in diffuse HI 21 cm background radiation from the post-reionization epoch (z < 6) is a promising avenue to probe the large-scale structure of the Universe and understand the evolution of galaxies. We observe the European Large-Area ISO Survey-North 1 (ELAIS-N1) field at 300-500 MHz using the upgraded Giant Meterwave Radio Telescope (uGMRT) and employ the 'foreground avoidance' technique to estimate the HI 21 cm power spectrum in the redshift range z = 1.96-3.58. Given the possible systematics that may remain in the data, we find the most stringent upper limits on the spherically averaged 21 cm power spectra at k~1.0 Mpc$^{-1}$ are (58.87 mK)$^2$, (61.49 mK)$^2$, (60.89 mK)$^2$, (105.85 mK)$^2$ at z = 1.96,2.19,2.62 and 3.58, respectively. We use this to constrain the product of neutral HI mass density (Omega_HI) and HI bias (b_HI) to the underlying dark matter density field, [Omega_HI*b_HI], as 0.09,0.11,0.12,0.24 at z=1.96,2.19,2.62,3.58, respectively. To the best of our knowledge these are the first limits on the HI 21 cm power spectra at the redshift range z = 1.96 - 3.58 and would play a significant role to constrain the models of galaxy formation and evolution.
description: Accepted for publication in the Astrophysical Journal Letters (APJL)
M‐A2.COHESIVE.4.7 - Databases containing the country data (COHESIVE)
Creators: name: Di Pasquale, Adriano
name: Caldarelli, Valentina
Publisher: name: Zenodo
Year: 2020
Subjects: OHEJP
COHESIVE
M‐A2.COHESIVE.4.7
Databases containing the country data
M‐A2.COHESIVE.4
WORKPACKAGE 4
IZSAM

description: Project JIP2 COHESIVE COHESIVE: One Health Structure In Europe
  Milestone M‐A2.COHESIVE.4.7 Workpackage 4 M‐A2.COHESIVE.4.7 Databases containing the country data
Characteristic function and quasi-probability distribution of photons and of squeezed coherent photons
Creators: name: Alexanian, Moorad
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We consider the p-ordered characteristic function and its Fourier transform, the quasidistribution function, of squeezed coherent photons in a thermal state of photons and calculate the mean number and number variance of squeezed coherent photons. All the properties calculated from the previous characteristic function can be used to calculate said properties for photons in a thermal state of squeezed coherent photons via a parametric transformation. In particular, one can obtain the mean number and number variance via the parametric transformation.
Perceived duration, task difficulty and performance: a general metric
Creators: name: Gorea, Andrei
name: Rider, Delphine
name: Granjon, Lionel
Publisher: name: F1000Research
Year: 2015

description: The time given to complete an arbitrary task appears too short to those who failed to complete it and the task is judged too difficult. Time perception was indeed shown to depend on both difficulty and (indirectly on) performance but the present study is the first to dissociate the latter two and to assess their metric relationship with perceived duration. Task difficulty was quantified as the ratio between the given and necessary duration to perform a visuo-motor task. Performance was quantified as the proportion of the maximum achievement. The visuo-motor task consisted in clicking-off a given number of discs displayed on the screen. In two distinct experiments the number of discs to be extinguished was set so that they can be extinguished within 520, 960 or 1760 ms (Experiment 1) or 5000 ms (Experiment 2). To perform the task participants were given the necessary durations, a fraction of those durations (Experiments 1 and 2) or durations longer than necessary (Experiment 1). Perceived duration of the given time intervals was assessed with an adaptive-comparison and with a reproduction method when participants performed the visuo-motor task or watched it being performed by the computer. Data show that perceived duration is independent of difficulty as defined but increases with both participant’s and computer’s ‘performance’. The most general account of the data is when they are expressed in z-scores: for each performance z-score increase of 1 standard deviation (SD) the estimated time increases by 0.33SD.
Path-integral over non-linearly realized groups and Hierarchy solutions
Creators: name: Bettinelli, Daniele
name: Ferrari, Ruggero
name: Quadri, Andrea
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: The technical problem of deriving the full Green functions of the elementary pion fields of the nonlinear sigma model in terms of ancestor amplitudes involving only the flat connection and the nonlinear sigma model constraint is a very complex task. In this paper we solve this problem by integrating, order by order in the perturbative loop expansion, the local functional equation derived from the invariance of the SU(2) Haar measure under local left multiplication. This yields the perturbative definition of the path-integral over the non-linearly realized SU(2) group.
description: 26 pages
Flatband generators
Creators: name: Maimaiti, Wulayimu
Publisher: name: arXiv
Year: 2020
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Flatbands (FBs) are dispersionless energy bands in the single-particle spectrum of a translational invariant tight-binding network. The FBs occur due to destructive interference, resulting in macroscopically degenerate eigenstates living in a finite number of unit cells, which are called compact localized states (CLSs). Such macroscopic degeneracy is in general highly sensitive to perturbations, such that even slight perturbation lifts the degeneracy and leads to various interesting physical phenomena. In this thesis, we develop an approach to identify and construct FB Hamiltonians in 1D, 2D Hermitian, and 1D non-Hermitian systems. First, we introduce a systematic classification of FB lattices by their CLS properties, and propose a scheme to generate tight-binding Hamiltonians having FBs with given CLS properties---a FB generator. Applying this FB generator to a 1D system, we identify all possible FB Hamiltonians of 1D lattices with arbitrary numbers of bands and CLS sizes. Extending the 1D approach, we establish a FB generator for 2D FB Hamiltonians that have CLSs occupying a maximum of four unit cells in a $2\times2$ plaquette. Employing this approach in the non-Hermitiaon regime, we realize a FB generator for a 1D non-Hermitian lattice with two bands. Ultimately, we apply our methods to propose a tight-binding model that explains the spectral properties of a microwave photonic crystal. Our results and methods in this thesis further our understanding of the properties of FB lattices and their CLSs, provide more flexibility to design FB lattices in experiments, and open new avenues for future research.
description: UST d-collection site: http://www.dcollection.net/handler/ust/200000281843
La corruption et la délinquance financière au Mali : facettes et impacts socio-économiques
Creators: name: Moussa DIALLO
name: Ousmane DOUCOURE
Publisher: name: Zenodo
Year: 2024

description: Le Mali est confronté au phénomène de la corruption et de la délinquance financière avec une acuité remarquable et l’Indice de Perception de la Corruption (IPC) qui lui est attribué dans les différents rapports de Transparency International en donne une illustration. Plusieurs institutions ont défini la corruption et la délinquance financière. Même s’il n’existe pas une grande différence entre leurs définitions respectives, les formes ainsi que les qualifications qu’elles en donne sont autant nombreuses que variées. Au Mali, la persistance et le progrès de la corruption et de la délinquance financière sont dus à la pauvreté, aux facteurs sociaux, à la faiblesse des institutions, etc. Les facettes de la corruption et de la délinquance financière les plus significatives se déroulent au niveau du processus des marchés publics. Cela ne doit occulter le fait qu’il s’agit d’un phénomène répandu dans tous les secteurs de la vie nationale ; et ses effets sur la société et l’économie sont désastreux. En effet, la corruption et la délinquance financière entrainent l’exacerbation des inégalités sociales, l’effritement des valeurs morales et sociétales, et la perte de confiance dans les institutions. Fort de ce constat, la lutte contre la corruption et la délinquance financière a été érigée en priorité dans les politiques publiques à travers l’adoption d’un arsenal juridique robuste et la création d’une multitude d’institutions. Malgré tout, cette lutte peine à produire les effets escomptés et pour preuve, la corruption et la délinquance financière prospère. Sans une volonté politique réelle, sans une prise de conscience nationale sur les méfaits du fléau par la formation et l’éducation des citoyens, aucune politique de lutte contre la corruption n’aboutira à des résultats concrets. Les initiatives nationales doivent être renforcées par les initiatives internationales. En définitive, la lutte contre le fléau de la corruption et de la délinquance financière doit être une préoccupation pour tous.
Detecting Extra Dimension by Helium-like Ions
Creators: name: Liu, Yu-Xiao
name: Zhang, Xin-Hui
name: Duan, Yi-Shi
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Considering that gravitational force might deviate from Newton's inverse-square law and become much stronger in small scale, we present a method to detect the possible existence of extra dimensions in the ADD model. By making use of an effective variational wave function, we obtain the nonrelativistic ground energy of a helium atom and its isoelectronic sequence. Based on these results, we calculate gravity correction of the ADD model. Our calculation may provide a rough estimation about the magnitude of the corresponding frequencies which could be measured in later experiments.
description: 8 pages, no figures, accepted by Mod. Phys. Lett. A
A search for dust and molecular gas in enormous Ly$α$ nebulae at $z\approx 2$
Creators: name: Decarli, Roberto
name: Arrigoni-Battaia, Fabrizio
name: Hennawi, Joseph F.
name: Walter, Fabian
name: Prochaska, Jason X.
name: Cantalupo, Sebastiano
Publisher: name: arXiv
Year: 2020
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Enormous Ly$α$ nebulae, extending over 300-500\,kpc around quasars, represent the pinnacle of galaxy and cluster formation. Here we present IRAM Plateau de Bure Interferometer observations of the enormous Ly$α$ nebulae `Slug' ($z$=$2.282$) and `Jackpot' ($z$=$2.041$). Our data reveal bright, synchrotron emission associated with the two radio-loud AGN embedded in the targeted nebulae, as well as molecular gas, as traced via the CO(3-2) line, in three galaxies (two sources in the Slug, and one in the Jackpot). All of the CO emission is associated with galaxies detected in their rest-frame UV stellar emission. The total mass in molecular gas of these three galaxies [$\sim (3-5)\times10^{10}$ M$_\odot$] is comparable with the total ionized gas mass responsible for the diffuse nebular emission. Our observations place limits on the molecular gas emission in the nebulae: The molecular gas surface density is $Σ_{\rm H2}<12-25$ M$_\odot$ pc$^{-2}$ for the Slug nebula and $Σ_{\rm H2}<34-68$ M$_\odot$ pc$^{-2}$ for the Jackpot nebula. These are consistent with the expected molecular gas surface densities, as predicted via photoionization models of the rest-frame UV line emission in the nebulae, and via Ly$α$ absorption in the Jackpot nebula. Compared to other radio--loud quasars at $z>1$, and high-redshift radio--loud galaxies, we do not find any strong trends relating the molecular gas reservoirs, the radio power, and the Ly$α$ luminosities of these systems. The significant step in sensitivity required to achieve a detection of the molecular gas from the nebulae, if present, will require a substantial time investment with JVLA, NOEMA, or ALMA.
description: 6 pages, 3 figures. Accepted for publication in A&A
Optimal Control of Quantum Rings by Terahertz Laser Pulses
Creators: name: Rasanen, E.
name: Castro, A.
name: Werschnik, J.
name: Rubio, A.
name: Gross, E. K. U.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: Complete control of single-electron states in a two-dimensional semiconductor quantum-ring model is established, opening a path into coherent laser-driven single-gate qubits. The control scheme is developed in the framework of optimal control theory for laser pulses of two-component polarization. In terms of pulse lengths and target-state occupations, the scheme is shown to be superior to conventional control methods that exploit Rabi oscillations generated by uniform circularly polarized pulses. Current-carrying states in a quantum ring can be used to manipulate a two-level subsystem at the ring center. Combining our results, we propose a realistic approach to construct a laser-driven single-gate qubit that has switching times in the terahertz regime.
description: Phys. Rev. Lett. (in print) (2007)
The deep roots of cannabis legalization : environmental and equity impacts of the legacy of prohibition in Mexico
Creators: name: Johnson, Margaret (Margaret Mary)
name: 0000-0003-1292-4203
Publisher: name: The University of Texas at Austin
Year: 2022
Subjects: Cannabis
Mexico
Legalization
Prohibition
Environmental
Equity

description: There is a growing understanding that cannabis legalization in and of itself may not be the answer to the lasting harms of drug prohibition. Various examinations of the medical cannabis industry have uncovered issues of equity and how legalization can perpetuate the harms of prohibition by subjecting already marginalized small time producers to larger, more developed firms that can set competitive prices. Rather, the nature of legalization policy determines the effectiveness in alleviating the harms of prohibition and avoiding some of the environmental effects of legalization. Using Mexico, this paper will demonstrate how the legacy of prohibition has resulted in a consumer over producer narrative of legalization which in turn results in a pharmaceutical model of production based on the need to tightly control cannabis. The lingering anxiety of the illegal drug market and international market factors push a pharmaceutical model that is more capital intensive and environmentally fraught. Mexico’s newly legalizing market can help us see into the workings of this process and provide a way forward that is more equitable and more sustainable
AIDS, the "other plague": a history of AIDS prevention education in Vancouver, 1983-1994
Creators: name: Marjoribanks, Bruce
Publisher: name: University of British Columbia
Year: 2009

description: This study describes how AIDS prevention education programs were constructed, delivered, and implemented in Vancouver between 1983 and 1994. Biodeterministic models of disease are examined through a historical analysis of documents that include newsletters, minutes of board meetings, policy reviews, annual reports, and personal journals. This study assumes that AIDS is as much a sociocultural phenomenon as it is biological. The findings suggest that present educational guidelines for AIDS prevention are unable to identify what messages should be communicated and fail to identify to whom they should be conveyed. This study does not recommend the use of biodeterministic models of AIDS prevention education which reflect plague metaphors. Instead, culturally relevant strategies need to be developed throughout all aspects of AIDS prevention curricula.
On the accuracy of first-principles lateral interactions: Oxygen at Pd(100)
Creators: name: Zhang, Yongsheng
name: Blum, Volker
name: Reuter, Karsten
Publisher: name: arXiv
Year: 2007
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We employ a first-principles lattice-gas Hamiltonian (LGH) approach to determine the lateral interactions between O atoms adsorbed on the Pd(100) surface. With these interactions we obtain an ordering behavior at low coverage that is in quantitative agreement with experimental data. Uncertainties in the approach arise from the finite LGH expansion and from the approximate exchange-correlation (xc) functional underlying the employed density-functional theory energetics. We carefully scrutinize these uncertainties and conclude that they primarily affect the on-site energy, which rationalizes the agreement with the experimental critical temperatures for the order-disorder transition. We also investigate the validity of the frequently applied assumption that the ordering energies can be represented by a sum of pair terms. Restricting our LGH expansion to just pairwise lateral interactions, we find that this results in effective interactions which contain spurious contributions that are of equal size, if not larger than any of the uncertainties e.g. due to the approximate xc functional.
description: 14 pages including 7 figures; related publications can be found at http://www.fhi-berlin.mpg.de/th/th.html
Feminine Americanism : womanhood and athletes in the 1950s
Creators: name: Nelson, Emalee
name: 0009-0009-0027-6449
Publisher: name: The University of Texas at Austin
Year: 2023
Subjects: Women's sport
Gender
Race
Equality
Cold War

description: The immediate years following World War II are considered by historians to be the “post war” years. However, tension with the Soviet Union heightened soon after the war, igniting what would become a global ideological conflict for nearly a half century. The Cold War marked a drastic turn from the wartime unity and contributions made by both men and women, alike. Instead, the United States required a different type of role and responsibility from men and, especially, from women. In the decade to follow WWII, women were expected to uphold imagery and behavior that promoted domestic appearances and occupations, often which centered around the home and motherhood. Understandably, this left little room for women in sport—a hobby and activity traditionally left for men during this time. Fortunately, this did not dampen the spirits of women eager to play and participate in a variety of sports. Instead, it meant they had to find a balance within the physicality of sport and docile domesticity. As a result, overt expressions of femininity incorporated into competition, but also while promoting these athletes and their leagues. This dissertation will offer new insight into the conversations on mid-century womanhood, femininity, and race. Within this research, I will discuss three case studies as separate articles, which exemplify areas in sport where femininity and athletics were intrinsically convoluted during the early Cold War years, including: Cuban women’s participation in the All-American Girls Professional Baseball League, the Wayland Baptist Flying Queens women’s basketball team’s unprecedented success, and the cultural positionality of Black track and field women during international competition. Together, these three articles illustrate the strict cultural and social standards mandated by patriarchal structures which highly policed an athlete’s participation and experience within women’s sport. This dissertation will fill an under-published gap in the research on women in sport, but also provide a unique thread to the complicated relationship between America’s global diplomatic quest and the role which these women in sport were used to represent the superiority of democratic values.
Spatio-temporal visual processing in school-age children and adults
Creators: name: Contemori, Giulio
Publisher: name: F1000Research
Year: 2015

description: The present study aims at comparing children and adult performance on detecting low contrast stimuli with spatio-temporal properties suitable for either the dorsal or the ventral stream at early level of processing.  The data suggest that the dorsal stream displays a longer developmental time course than the ventral stream and that this protracted development of the dorsal stream may affect ventral stream processing.
Extended Lattice Boltzmann Model
Creators: name: Saadat, M. H.
name: Dorschner, B.
name: Karlin, I. V.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: Conventional lattice Boltzmann models for the simulation of fluid dynamics are restricted by an error in the stress tensor that is negligible only for vanishing flow velocity and at a singular value of the temperature. To that end, we propose a unified formulation that restores Galilean invariance and isotropy of the stress tensor by introducing an extended equilibrium. This modification extends lattice Boltzmann models to simulations with higher values of the flow velocity and can be used at temperatures that are higher than the lattice reference temperature, which enhances computational efficiency by decreasing the number of required time steps. Furthermore, the extended model remains valid also for stretched lattices, which are useful when flow gradients are predominant in one direction. The model is validated by simulations of two- and three-dimensional benchmark problems, including the double shear layer flow, the decay of homogeneous isotropic turbulence, the laminar boundary layer over a flat plate and the turbulent channel flow.
Milestone M JIP2-4.1: Initial workshop Workpackage 4.1 (COHESIVE)
Creators: name: Di Pasquale, Adriano
name: Cammà, Cesare
name: Caldarelli, Valentina
Publisher: name: Zenodo
Year: 2019
Subjects: OHEJP
COHESIVE
COHESIVE Information System
Workpackage 4
M JIP2-4.1
Initial workshop
IZSAM
Milestone

description: Milestone M JIP2-4.1: Initial workshop  Workpackage 4.1 Project JIP2 COHESIVE COHESIVE: One Health Structure In Europe
Making TOD equitable : a genetic algorithm approach
Creators: name: Hemeon-McMahon, Aodhan
name: 0000-0002-1494-3347
Publisher: name: The University of Texas at Austin
Year: 2022
Subjects: TOD
Transit-oriented development
Affordable housing
Genetic algorithm
Austin

description: In response to swiftly rising rental rates in the City of Austin, Texas, in 2017 the Austin City Council adopted a 10-year plan for creating affordable housing units called the Austin Strategic Housing Blueprint. This professional report takes a quantitative approach to identifying the costs and development constraints associated with meeting part of the Strategic Housing Blueprint goals for building affordable housing units along two future light-rail corridors proposed through Project Connect, a major transit project approved by Austin voters in the November 2020 election. After setting a series of pro forma assumptions for all parcels within the study area, I use the genetic algorithm modeling program Evolver to solve for the lowest subsidy cost which would be required to build the number of affordable housing units necessary to meet the Housing Blueprint goals under three different zoning scenarios. My results suggest that current zoning within the study area is an enormous hurdle to developing the amount of affordable housing needed in the study area according to the Housing Blueprint. However, raising multifamily zoning levels can create extensive reductions in the total cost of meeting the affordable housing unit goals. Further, my results show that creating a TIF program within the study area which is dedicated to producing affordable housing could provide funding for a large amount of subsidy costs in all scenarios, and could theoretically fund all subsidy costs if multifamily zoning levels were considerably increased
High $|t|$ diffractive vector meson production at the EIC
Creators: name: Deak, Michal
name: Stasto, Anna M.
name: Strikman, Mark
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We investigate the prospects of the diffractive production of $J/ψ$ mesons at large momentum transfer $|t|$ at the future Electron Ion Collider in electron-proton collisions. In particular, we focus on the measurements of the rapidity gap size. The model used for the calculations is based on the diffractive exchange of the Balitsky-Fadin-Kuraev-Lipatov perturbative Pomeron. Calculations for the cross section and the estimates for the rates assuming integrated luminosity of $10 \, \rm fb^{-1}$ are provided. Two experimental strategies were considered. First, measuring the rapidity gap size directly, by observing the activity in the forward part of the central detector, and second by putting a lower limit on the rapidity gap size in the case when the detector cannot measure forward activity. We find that, it is possible to measure at the EIC the dependence of the cross section on rapidity gap interval up to four units in rapidity. This should allow to measure the change of the cross section by a factor 1.6 expected due to the BFKL exchange. This is possible with the present setup of the detector which projects the coverage up to 3.5 units of rapidity. We conclude however, that the extension of the detector up to higher rapidity, for example to 4.5 would be desirable and provide even better lever arm for testing rapidity gap physics at the EIC.
description: 27 pages, 14 figures