cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Variational principle and phase space measure in non-canonical coordinates
Creators: name: Sergi, Alessandro
Publisher: name: arXiv
Year: 2005
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: Non-canonical equations of motion are derived from a variational principle written in symplectic form. The invariant measure of phase space and the covariant expression for the entropy are derived from non-canonical transformations of coordinates. This shows that the geometry of non-canonical phase space is non trivial even if dynamics has no compressibility.
Between Asclepius and Mammon : disease, health and medicine in Madras under the English East India Company, 1786-1815
Creators: name: Nair, Aparna
Publisher: name: The Australian National University
Year: 2010
Subjects: subject: RA529.N35 2010
subject: East India Company History
subject: Public health HistoryIndia Madras
subject: Medicine HistoryIndia Madras

description: Pathogens and people : an introduction -- Of merchants and surgeons -- Fieldwork and sources -- The pathology of presidency : the disease environment of Madras -- "An Egyptian infection" : war, plague and quarantines of the English East India Company at Madras and Bombay, 1802 -- Warding off smallpox : variolation and vaccination programs in Madras -- The bite of Cerberus : epidemic malaria in the southern provinces of Madras, 1809-12 -- Company medicine : between Asclepius and Mammon
Monitoring and Forecasting COVID-19: Statistical Heuristic Regression, Susceptible-Infected-Removed model and, Spatial Stochastics
Creators: name: de Andres, Pedro L.
name: de Andres-Bragado, Lucia
name: Hoessly, Linard D.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Populations and Evolution (q-bio.PE)
subject: FOS: Biological sciences
subject: G.3

description: The COVID-19 pandemic has had worldwide devastating effects on human lives, highlighting the need for tools to predict its development. Dynamics of such public-health threats can often be efficiently analysed through simple models that help to make quantitative timely policy decisions. We benchmark a minimal version of a Susceptible-Infected-Removed model for infectious diseases (SIR) coupled with a simple least-squares Statistical Heuristic Regression (SHR) based on a lognormal distribution. We derived the three free parameters for both models in several cases and tested them against the amount of data needed to bring accuracy in predictions. The SHR model is approximately +/- 2% accurate about 20 days past the second inflexion point in the daily curve of cases, while the SIR model reaches a similar accuracy a fortnight before. All the analyzed cases assert the utility of SHR and SIR approximants as a useful tool to forecast the evolution of the disease. Finally, we have studied simulated stochastic individual-based SIR dynamics, which yields a detailed spatial and temporal view of the disease that cannot be given by SIR or SHR methods.
description: 33 pages, 14 figures, 3 tables
q-analogue of Euler-Barnes' numbers and polynomials
Creators: name: Kim, Taekyun
name: Jang, Lee-Chae
Publisher: name: arXiv
Year: 2005
Subjects: subject: Number Theory (math.NT)
subject: FOS: Mathematics
subject: 11B68

description: We construct the q-analogue of Euler-Barnes' numbers and polynomials, and investigate their some properties.
description: 9 pages
Place and Education : expanding the conversation within adult ESL and other educational contexts
Creators: name: Walker, Sarah
Publisher: name: University of British Columbia
Year: 2009

description: In a world replete with many views of education, it is perhaps easier to notice the differences amongst educational perspectives rather than the interconnections. The role of this thesis is to bring together some of these perspectives through a conceptual analysis of place and its links to education, self, and ESL. Place is a term used in environmental philosophy to refer to a particular space or region as experienced by a person, and to the relationships and responsibilities which connect that person to the world in which he or she lives. Environmental philosophers argue that the relationships bound up in place intimately shape who we are as individuals and the life choices that we make. I will differentiate further between four aspects of place, and address what it could mean to allow a sense of place to influence my life more deeply: what it means to be placeful. Investigation of the politics of place and the impact of race, class, power, and global inequalities on place experiences — areas I cannot explore deeply here - are important areas of research to continue to expand this conversation. The role of place in education is dynamic. I come to the classroom as an educator with two main passions: concern for the learners and concern for the environment. Through an understanding and awareness of place, environmental education and cornmunity/experience-based pedagogy can come together to develop an educational system which will address the needs of the learners, help them develop their understanding of self and place, and encourage care for and awareness of the environment. Jane McRae and Winnie Tarn, two educators of the Association for the Advancement and Promotion of Science Education (APASE), shared with me in a set of interviews their perspectives on place in ESL education. The discussion of APASE's Community Mapping Project which concludes the thesis is presented as an example of how one association has done this: a place-centred curriculum which incorporates feminist pedagogy, understanding and awareness of place, and the importance of addressing environmental issues.
Solitonic generation of vacuum solutions in five-dimensional General Relativity
Creators: name: Iguchi, Hideo
name: Mishima, Takashi
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We describe a solitonic solution-generating technique for the five-dimensional General Relativity. Reducing the five-dimensional problem to the four-dimensional one, we can systematically obtain single-rotational axially symmetric vacuum solutions. Applying the technique for a simple seed solution, we have previously obtained the series of stationary solutions which includes $S^2$-rotating black ring. We analyze the qualitative features of these solutions, e.g., conical singularities, closed timelike curves, and spacetime curvatures. We investigate the rod structures of seed and solitonic solutions. We examine the relation between the expressions of the metric in the prolate-spheroidal coordinates and in the C-metric coordinates.
description: 18 pages, 10 figures, published version
Mapping the Cosmological Expansion
Creators: name: Linder, Eric V.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The ability to map the cosmological expansion has developed enormously, spurred by the turning point one decade ago of the discovery of cosmic acceleration. The standard model of cosmology has shifted from a matter dominated, standard gravity, decelerating expansion to the present search for the origin of acceleration in the cosmic expansion. We present a wide ranging review of the tools, challenges, and physical interpretations. The tools include direct measures of cosmic scales through Type Ia supernova luminosity distances, and angular distance scales of baryon acoustic oscillation and cosmic microwave background density perturbations, as well as indirect probes such as the effect of cosmic expansion on the growth of matter density fluctuations. Accurate mapping of the expansion requires understanding of systematic uncertainties in both the measurements and the theoretical framework, but the result will give important clues to the nature of the physics behind accelerating expansion and to the fate of the universe.
description: 49 pages, 29 figures; Review invited for Reports on Progress in Physics; v2 minor changes to match accepted version
The properties of Ly-alpha emitting galaxies in hierarchical galaxy formation models
Creators: name: Delliou, M. Le
name: Lacey, C. G.
name: Baugh, C. M.
name: Morris, S. L.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present detailed predictions for the properties of Ly-alpha-emitting galaxies in the framework of the Lambda-CDM cosmology, calculated using the semi-analytical galaxy formation model GALFORM. We explore a model which assumes a top-heavy IMF in starbursts, and which has previously been shown to explain the sub-mm number counts and the luminosity function of Lyman-break galaxies at high redshift. We show that this model, with the simple assumption that a fixed fraction of Ly-alpha photons escape from each galaxy, is remarkably successful at explaining the observed luminosity function of Ly-alpha emitters over the redshift range 37, a redshift range which is starting to be be probed by near-IR surveys and using new instruments such as DAzLE.
description: 16 pages, 8 figures. Accepted for publication in MNRAS. Revised in response to comments by referee. Main changes: new Fig.2 showing effects of different IMFs; new Fig.4 showing effects of different equivalent width limits on luminosity function; new panel in Fig.7 showing clustering bias; new Fig.8 with more detailed predictions for z>7 number counts; more extensive discussion of ongoing searches for z>7 LAEs
Detection of volatiles undergoing sublimation from 67P/Churyumov-Gerasimenko coma particles using ROSINA/COPS. I. The ram gauge
Creators: name: Pestoni, Boris
name: Altwegg, Kathrin
name: Balsiger, Hans
name: Hänni, Nora
name: Rubin, Martin
name: Schroeder, Isaac
name: Schuhmann, Markus
name: Wampfler, Susanne
Publisher: name: arXiv
Year: 2020
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: The ESA Rosetta mission has allowed an extensive in-situ study of comet 67P/Churyumov-Gerasimenko. In measurements performed by the ram gauge of the on-board COmet Pressure Sensor (COPS), features have been observed that deviate from the nominal ram gauge signal. These are attributable to the sublimation of the volatile fraction of cometary icy particles containing volatiles and refractories. The objective of this work is the investigation of the volatile content of icy particles that entered the COPS ram gauge. The ram gauge measurements are inspected for features that we associate to the sublimation of the volatile component of cometary particles impacting the instrument. All sublimation features with high enough signal to noise ratio are modelled by fitting one or more exponential decay functions. The parameters of these fits are used to categorise different compositions of the sublimating component. From features attributable to ice sublimation, we infer the detection of 73 icy particles containing volatiles. 25 detections have enough volatile content for an in-depth study. From the values of the exponential decay constants, we classified the 25 inferred icy particles into three types, interpreted as different volatile compositions, possibly further complicated by different morphologies. Available data do not give indication as to which molecules compose the different types. Nevertheless, we can estimate the total volume of volatiles, expressed as the diameter of an equivalent sphere of water (density of 1 g cm$^{-3}$). This was found to be on the order of hundreds of nanometres.
description: 9 pages, 8 figures, 2 tables, published in A&A, figures with better resolution
Novel Non-Conventional Adsorbent for the Remediation of Dye Bearing Wastewater
Creators: name: Srinivasan Pachamuthu
name: Ponnusamy, Sivakumar
Publisher: name: Thai Society of Higher Education Institutes on Environment
Year: 2015
Subjects: adsorption,kinetics,isotherm,textile effluent,methylene blue

description: 2, 8, EnvironmentAsia
Mixed-Integer Linear Programming Models for Multi-Robot Non-Adversarial Search
Creators: name: Asfora, Beatriz A.
name: Banfi, Jacopo
name: Campbell, Mark
Publisher: name: arXiv
Year: 2020
Subjects: subject: Robotics (cs.RO)
subject: Computational Complexity (cs.CC)
subject: Multiagent Systems (cs.MA)
subject: FOS: Computer and information sciences

description: In this letter, we consider the Multi-Robot Efficient Search Path Planning (MESPP) problem, where a team of robots is deployed in a graph-represented environment to capture a moving target within a given deadline. We prove this problem to be NP-hard, and present the first set of Mixed-Integer Linear Programming (MILP) models to tackle the MESPP problem. Our models are the first to encompass multiple searchers, arbitrary capture ranges, and false negatives simultaneously. While state-of-the-art algorithms for MESPP are based on simple path enumeration, the adoption of MILP as a planning paradigm allows to leverage the powerful techniques of modern solvers, yielding better computational performance and, as a consequence, longer planning horizons. The models are designed for computing optimal solutions offline, but can be easily adapted for a distributed online approach. Our simulations show that it is possible to achieve 98% decrease in computational time relative to the previous state-of-the-art. We also show that the distributed approach performs nearly as well as the centralized, within 6% in the settings studied in this letter, with the advantage of requiring significant less time - an important consideration in practical search missions.
description: Published at IEEE Robotics and Automation Letters, presented at IROS 2020. Presentation available at https://youtu.be/BhUczcDq3Dc Code is open source and available at https://github.com/basfora/milp_mespp.git
The phase-space distribution of infalling dark matter subhalos
Creators: name: Wang, H. Y.
name: Jing, Y. P.
name: Mao, Shude
name: Kang, Xi
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We use high-resolution numerical simulations to study the physical properties of subhalos when they merge into their host halos. An improved algorithm is used to identify the subhalos. We then examine their spatial and velocity distributions in spherical and triaxial halo models. We find that the accretion of satellites preferentially occurs along the major axis and perpendicular to the spin axis of the host halo. Furthermore, the massive subhalos show a stronger preference to be accreted along the major axis of the host halo than the low-mass ones. Approximate fitting formulae are provided for the physical properties of subhalos. Combined with analytical and semi-analytic techniques, these empirical formulae provide a useful basis for studying the subsequent evolution of subhalos and satellite galaxies in their hosts. Future studies should however account for satellites that may not be undergoing the first infall in their evolution.
description: revised version in press in MN with added material and references, 21 pages and 25 figures
Vertical Profiles of Natural Uranium Isotopes in Sediment Cores from Kota Kinabalu and Labuan Ports, Malaysia
Creators: name: Yusoff, Abdul Hafidz
name: Mohamed, Che Abd Rahim
Publisher: name: Thai Society of Higher Education Institutes on Environment
Year: 2015
Subjects: uranium,sediment core,total organic matter (TOM),limestone,detrital

description: 2, 8, EnvironmentAsia
Spatial Distribution and Mobility Factor of Heavy Metals in Agricultural Soil in the Vicinity of Abandoned Lead Ore Dressing Plant, Klity Village, Thailand
Creators: name: Teerawit Poopa
name: Prasert Pavasant
name: Vorapot Kanokkantapong
name: Bunyarit Panyapinyopol
Publisher: name: Thai Society of Higher Education Institutes on Environment
Year: 2015
Subjects: zinc,cadmium, chromium,exchangeable,acid extraction,ore dressing plant,vertical distribution

description: 2, 8, EnvironmentAsia
Deterministically fabricated strain-tunable quantum dot single-photon sources emitting in the telecom O-band
Creators: name: Srocka, Nicole
name: Mrowiński, Pawel
name: Große, Jan
name: Schmidt, Marco
name: Rodt, Sven
name: Reitzenstein, Stephan
Publisher: name: arXiv
Year: 2020
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Most quantum communication schemes aim at the long-distance transmission of quantum information. In the quantum repeater concept, the transmission line is subdivided into shorter links interconnected by entanglement distribution via Bell-state measurements to overcome inherent channel losses. This concept requires on-demand single-photon sources with a high degree of multi-photon suppression and high indistinguishability within each repeater node. For a successful operation of the repeater, a spectral matching of remote quantum light sources is essential. We present a spectrally tunable single-photon source emitting in the telecom O-band with the potential to function as a building block of a quantum communication network based on optical fibers. A thin membrane of GaAs embedding InGaAs quantum dots (QDs) is attached onto a piezoelectric actuator via gold thermocompression bonding. Here the thin gold layer acts simultaneously as an electrical contact, strain transmission medium and broadband backside mirror for the QD-micromesa. The nanofabrication of the QD-micromesa is based on in-situ electron-beam lithography, which makes it possible to integrate pre-selected single QDs deterministically into the center of monolithic micromesa structures. The QD pre-selection is based on distinct single-QD properties, signal intensity and emission energy. In combination with strain-induced fine tuning this offers a robust method to achieve spectral resonance in the emission of remote QDs. We show that the spectral tuning has no detectable influence on the multi-photon suppression with $g^{(2)}(0)$ as low as 2-4% and that the emission can be stabilized to an accuracy of 4 $μ$eV using a closed-loop optical feedback.
Accumulation and Clearance of PAHs and CYP1A Levels in Farmed Green Mussels (Perna viridis L.) from a Coastal Industrial Area in Thailand
Creators: name: Varaporn Cholumpai
name: Celander, Malin C.
name: Praparsiri Kanchanopas-Barnette
Publisher: name: Thai Society of Higher Education Institutes on Environment
Year: 2015
Subjects: green mussel (Perna viridis L.),Maptaphut,PAH,CYP1A, tropical waters

description: 2, 8, EnvironmentAsia
Bioconcentration Factor (BCF) and Depuration of Heavy Metals of Oysters (Saccostrea cucullata) and Mussels (Perna viridis) in the River Basins of Coastal Area of Chanthaburi Province, Gulf of Thailand
Creators: name: Jakkapan Potipat
name: Nongnud Tangkrock-Olan
name: Helander, Herbert F.
Publisher: name: Thai Society of Higher Education Institutes on Environment
Year: 2015
Subjects: bioconcentration factor (BCF),depuration,Saccostrea cucullata,Perna viridis,Chanthaburi Province

description: 2, 8, EnvironmentAsia
Simulations of vibrated granular medium with impact velocity dependent restitution coefficient
Creators: name: Mcnamara, Sean
name: Falcon, Eric
Publisher: name: arXiv
Year: 2005
Subjects: subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: We report numerical simulations of strongly vibrated granular materials designed to mimic recent experiments performed both in presence or absence of gravity. The coefficient of restitution used here depends on the impact velocity by taking into account both the viscoelastic and plastic deformations of particles, occurring at low and high velocities respectively. We show that this model with impact velocity dependent restitution coefficient reproduce results that agree with experiments. We measure the scaling exponents of the granular temperature, collision frequency, impulse, and pressure with the vibrating piston velocity as the particle number increases. As the system changes from a homogeneous gas state at low density to a clustered state at high density, these exponents are all found to decrease continuously with the particle number. All these results differ significantly from classical inelastic hard sphere kinetic theory and previous simulations, both based on a constant restitution coefficient.
description: to be published in Phys. Rev. E
Zur ökumenischen Situation Ende 1987
Creators: name: Schneider, Theodor
name: Sticher, Hermann
name: Ritschl, Dietrich
Publisher: name: Ökumenische Rundschau
Year: 2025

description: Ökumenische Rundschau, Bd. 37 Nr. 2 (1988): Ökumenische Rundschau, Band 37, Heft 2
The press in transition : a comparative study of Nicaragua, South Africa, Jordan, and Russia
Creators: name: Jones, Adam
Publisher: name: University of British Columbia
Year: 2009

description: The Press in Transition adopts a comparative approach to transitional print institutions worldwide. It is based on some 150 interviews and archival research on four continents, over a decade of unprecedented global transformation and upheaval. The dissertation seeks to fill a serious gap in the existing literature on democratization and political transition. Theoretical chapters advance a comparative model of press functioning (Chapter 1) and a more tentative model of transitional media, with a strong focus on the mainstream press (Chapter 6). The bulk of the work consists of four case-studies, each drawn from a different geographical region (indeed, continent) and a markedly different "type" of liberalization or transition process. The case of Nicaragua (Chapter 2) stands out somewhat. It concentrates almost exclusively on a single newspaper, Barricada, the former official organ of the Sandinista Front. The newspaper's transformations in the 1990s are, however, set against the backdrop of Barricades history since 1979, intra-Sandinista politics during and after the revolutionary era, and the more general interplay of media and politics in Nicaragua. The remaining three case-studies (South Africa, Jordan, and Russia: Chaps. 3-5) combine system-level analysis with micro-level portraits of transitional institutions and individuals. The core of the theoretical analysis lies in a delineation of "mobilizing" and "professional" imperatives. The former I attach mainly to sponsors and managers of media institutions; the latter mainly - not exclusively or universally — to the editorial side of the operation. The interplay of these variables I see as integral to an understanding of events at the case-study newspapers. The opening theoretical chapter situates mobilizing and professional imperatives as both dependent and independent variables. I argue that they reflect and respond to variables like underdevelopment, authoritarianism, and pre-existing media culture. But they also serve as founts of important and interesting initiatives, whether professional, political, or commercial. Significantly, too, they regularly conflict. The dissertation struggles to avoid heroicizing, but it also tries to show that tensions and upheavals — both small-scale and radically transformative - tend to derive from the clash of mobilizing and professional priorities.
A Search for sub-km KBOs with the Method of Serendipitous Stellar Occultations
Creators: name: Bickerton, S. J.
name: Kavelaars, J. J.
name: Welch, D. L.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The results of a search for sub-km Kuiper Belt Objects (KBOs) with the method of serendipitous stellar occultations are reported. Photometric time series were obtained on the 1.8m telescope at the Dominion Astrophysical Observatory (DAO) in Victoria, BC, and were analyzed for the presence of occultation events. Observations were performed at 40 Hz and included a total of 5.0 star-hours for target stars in the ecliptic open cluster M35 (beta=0.9deg), and 2.1 star-hours for control stars in the off-ecliptic open cluster M34 (beta=25.7deg). To evaluate the recovery fraction of the analysis method, and thereby determine the limiting detectable size, artificial occultation events were added to simulated time series (1/f scintillation-like power-spectra), and to the real data. No viable candidate occultation events were detected. This limits the cumulative surface density of KBOs to 3.5e10 deg^{-2} (95% confidence) for KBOs brighter than m_R=35.3 (larger than ~860m in diameter, assuming a geometric albedo of 0.04 and a distance of 40 AU). An evaluation of TNO occultations reported in the literature suggests that they are unlikely to be genuine, and an overall 95%-confidence upper limit on the surface density of 2.8e9 deg^{-2} is obtained for KBOs brighter than m_R=35 (larger than ~1 km in diameter, assuming a geometric albedo of 0.04 and a distance of 40 AU) when all existing surveys are combined.
description: Accepted for publication in AJ
Organometallic dendrimers and multi-state switches for nonlinear optics
Creators: name: Green, Katy Ann
Publisher: name: The Australian National University
Year: 2010
Subjects: subject: QD412.R9 G74 2010
subject: Nonlinear optics
subject: Ruthenium compounds
subject: Oganometallic compounds Optical properties

description: Organometallic complexes, and in particular metal alkynyl complexes, are playing an increasingly important role in the field of nonlinear optics (NLO). This thesis aims to extend the contribution of ruthenium alkynyl complexes in this field. Chapter 1 covers the synthesis and characterization of a series of zero-to second-generation ruthenium alkynyl dendrimers with varied peripheral groups. Wavelength-dependence studies of the third-order nonlinear optical properties of these dendrimers are discussed. Chapter 2 covers the syntheses and characterization of some symmetrical and dipolar multi-state ruthenium alkynyl molecular switches. Electrochemical studies of some of these switches are presented. Wavelength dependence studies of the third-order nonlinear optical properties of a symmetrical and a dipolar switch in six states are discussed.
Permutation branes and linear matrix factorisations
Creators: name: Enger, Håkon
name: Recknagel, Andreas
name: Roggenkamp, Daniel
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: All the known rational boundary states for Gepner models can be regarded as permutation branes. On general grounds, one expects that topological branes in Gepner models can be encoded as matrix factorisations of the corresponding Landau-Ginzburg potentials. In this paper we identify the matrix factorisations associated to arbitrary B-type permutation branes.
description: 43 pages. v2: References added
The Temperature Distribution of Dense Molecular Gas in the Center of NGC 253
Creators: name: Ott, Juergen
name: Weiss, Axel
name: Henkel, Christian
name: Walter, Fabian
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: [abridged] We present interferometric maps of ammonia (NH3) of the nearby starburst galaxy NGC 253 [star formation rate: ~2.8 Mo yr^(-1)]. The observations have been taken with the Australia Telescope Compact Array and include the para-NH3 (1,1), (2,2), and the ortho-NH3 (3,3) and (6,6) inversion lines. Six major complexes of dense ammonia are identified, three of them on either side of the starburst center, out to projected galactocentric radii of \~250 pc. [...] The application of radiative transfer large velocity gradient models reveals that the bulk of the ammonia molecules is embedded in a one-temperature gas phase. Kinetic temperatures of this gas are ~200 and 140 K toward the south-west and north-east [of the nucleus of NGC 253], respectively. The temperatures under which ammonia was formed in the past are with >~30 K also warmer toward the south-west than toward the north-east (~15-20 K). This is indicated by the ortho-to-para ammonia ratio which is ~1 and 1.5-2.5 toward the south-west and north-east, respectively. Ammonia column densities in the brightest complexes are in the range of 6-11x10^(14) cm^(-2), which adds up to a total ammonia mass of ~20 Mo, about evenly distributed toward both sides of the nucleus. [...] Toward the center of NGC 253, NH3 (1,1), (2,2), and (6,6) is detected in absorption against an unresolved continuum source. At the same location, however, ammonia (3,3) is found in emission which indicates maser activity. This would be the first detected extragalactic NH3 maser. Evidence for an expanding shell in the south-western complex is provided. [...] The shell and X-ray properties can be reproduced by the energy input of a highly obscured young stellar cluster with a mass of ~10^5 Mo which also heats the dense gas.
description: 42 pages including 13 figures, accepted for publication in ApJ
Effect of Long-Range Interactions on the Multicritical Behavior of Homogeneous Systems
Creators: name: Belim, S. V.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: A field-theoretic approach is applied to describe behavior of homogeneous three-dimensional systems with long-range interactions defined by two order parameters at bicritical and tetracritical points. Renormalization- group equations are analyzed in the two-loop approximation by using the Pade-Borel summation technique. The fixed points corresponding to various types of multicritical behavior are determined. It is shown that effects due to long-range interactions can be responsible for a change from bicritical to tetracritical behavior.
description: 3 pages
Directed evolution - improving enzyme properties
Creators: name: Mohd Hashim, Amalia
Publisher: name: The Australian National University
Year: 2011
Subjects: subject: TP248.E5 M64 2011
subject: Enzymes Biotechnology
subject: Molecular evolution

description: Although enzymes are the product of millions of years of natural evolution, their properties are frequently far from what is desired by biochemists. Directed evolution has long been used to improve protein properties: stability, expression, solubility, enantioselectivity, activity, and specificity as well as to dissect the relationship between protein structure and function. It mimics natural evolution as proposed by Darwin, in which large number of mutations are introduced randomly over the course of centuries and followed by selection of the fittest. Directed evolution is a useful and indispensable tool to identify mutations and can be accomplished within months in laboratories. During the course of this study, three proteins were subjected to directed evolution to enhance their solubility and catalytic activity. Selection for soluble protein was based on the ability of bacteria expressing DHFR-fused mutants to grow on high concentration of the antibiotic, trimethoprim. E. coli glucose-6-phosphate dehydrogenase, a critical enzyme in biochemical pathways was evolved to enhance its solubility for use in in vitro ethanol production. This experiment interestingly led to the selection of variants with altered oligomerisation state that retained activity. Klebsiella pneumonia metallo-{u03B2}-lactamase, KpMBL was subjected to molecular evolution to predict antibiotic and inhibitor resistance that may arise in the future. However, these experiments were hindered by inefficiency of the selection technique and toxic metabolic load on the bacteria. This led to experiments as to how bacteria growing on agar plates could cope with high levels of protein expression. As a result, mutations that may lead to increased enzyme activity were identified. Serratia protemaculans metallo-{u03B2}-lactamase, SpMBL was evolved for increased solubility via trimethoprim resistance selection when in a fused form or through enhanced ampicillin resistance of the protein. These two strategies led to identification of mutants possessing several mutations that consequently provided insights into the enzymes structure and function and how future resistance could arise. The ability of directed evolution to produce new enzymes as well as elucidate how enzymes function illustrates the versatility and power of directed evolution.
Deformed Special Relativity as an effective theory of measurements on quantum gravitational backgrounds
Creators: name: Aloisio, R.
name: Galante, A.
name: Grillo, A.
name: Liberati, S.
name: Luzio, E.
name: Mendez, F.
Publisher: name: arXiv
Year: 2005
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: In this article we elaborate on a recently proposed interpretation of DSR as an effective measurement theory in the presence of non-negligible (albeit small) quantum gravitational fluctuations. We provide several heuristic arguments to explain how such a new theory can emerge and discuss the possible observational consequences of this framework.
description: 11 pages, no figures
A comparative study of satellite galaxies in Milky Way-like galaxies from HSC, DECaLS and SDSS
Creators: name: Wang, Wenting
name: Takada, Masahiro
name: Li, Xiangchong
name: Carlsten, Scott G.
name: Lan, Ting-Wen
name: Shi, Jingjing
name: Miyatake, Hironao
name: More, Surhud
name: Beaton, Rachael L.
name: Lupton, Robert
name: Lin, Yen-Ting
name: Qiu, Tian
name: Luo, Wentao
Publisher: name: arXiv
Year: 2020
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We conduct a comprehensive and statistical study of the luminosity functions (LFs) for satellite galaxies, by counting photometric galaxies from HSC, DECaLS and SDSS around isolated central galaxies (ICGs) and paired galaxies from the SDSS/DR7 spectroscopic sample. Results of different surveys show very good agreement. The satellite LFs can be measured down to $M_V\sim-10$, and for central primary galaxies as small as $8.5-12$. Hence the MW and its satellite system are statistically atypical of our sample of MW-mass systems. In consequence, our MW is not a good representative of other MW-mass galaxies. Strong cosmological implications based on only MW satellites await additional discoveries of fainter satellites in extra-galactic systems. Interestingly, the MW satellite LF is typical among other MW-mass systems within 40~Mpc in the local Universe, perhaps implying the Local Volume is an under-dense region.
description: accepted by MNRAS, with more detailed discussions about the scatter
Collective cyclotron motion of the relativistic plasma in graphene
Creators: name: Mueller, Markus
name: Sachdev, Subir
Publisher: name: arXiv
Year: 2008
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We present a theory of the finite temperature thermo-electric response functions of graphene, in the hydrodynamic regime induced by electron-electron collisions. In moderate magnetic fields, the Dirac particles undergo a collective cyclotron motion with a temperature-dependent relativistic cyclotron frequency proportional to the net charge density of the Dirac plasma. In contrast to the undamped cyclotron pole in Galilean-invariant systems (Kohn's theorem), here there is a finite damping induced by collisions between the counter-propagating particles and holes. This cyclotron motion shows up as a damped pole in the frequency dependent conductivities, and should be readily detectable in microwave measurements at room temperature. We also discuss the large Nernst effect to be expected in graphene.
description: 16 pages, 2 figures; calculation of giant Nernst effect in graphene added
Atomic size oscillations in conductance histograms for gold nanowires and the influence of work hardening
Creators: name: Yanson, I. K.
name: Shklyarevskii, O. I.
name: Csonka, Sz.
name: van Kempen, H.
name: Speller, S.
name: Yanson, A. I.
name: van Ruitenbeek, J. M.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Nanowires of different nature have been shown to self-assemble as a function of stress at the contact between two macroscopic metallic leads. Here we demonstrate for gold wires that the balance between various metastable nanowire configurations is influenced by the microstructure of the starting materials and we discover a new set of periodic structures, which we interpret as due to the atomic discreteness of the contact size for the three principal crystal orientations.
description: This version corrects an error in attributing the three observed periods, and includes a comparison with recent model calculations
DIFFERENCES IN NUTRITION OF CHILDREN WITH DENTAL CARIES AND HEALTHY CHILDREN
Creators: name: Ahmedova, Malika
Publisher: name: Zenodo
Year: 2024

description: In the article, in order to improve the physical development and health of children and adolescents in our region, by enriching the composition of food products with supplements with biologically active substances, through diet Prevention of dental caries and other diseases caused by sweets is scientifically justifie.
Pseudo Entropy in Free Quantum Field Theories
Creators: name: Mollabashi, Ali
name: Shiba, Noburo
name: Takayanagi, Tadashi
name: Tamaoka, Kotaro
name: Wei, Zixia
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Pseudo entropy is an interesting quantity with a simple gravity dual, which generalizes entanglement entropy such that it depends on both an initial and a final state. Here we reveal the basic properties of pseudo entropy in quantum field theories by numerically calculating this quantity for a set of two-dimensional free scalar field theories and the Ising spin chain. We extend the Gaussian method for pseudo entropy in free scalar theories with two parameters: mass $m$ and dynamical exponent $z$. This computation finds two novel properties of Pseudo entropy which we conjecture to be universal in field theories, in addition to an area law behavior. One is a saturation behavior and the other one is non-positivity of the difference between pseudo entropy and averaged entanglement entropy. Moreover, our numerical results for the Ising chain imply that pseudo entropy can play a role as a new quantum order parameter which detects whether two states are in the same quantum phase or not.
description: 7 pages, revtex, 5 figures + 22 pages supplementary material. v2: minor improvements, matches PRL version
DsixTools 2.0: The Effective Field Theory Toolkit
Creators: name: Fuentes-Martin, Javier
name: Ruiz-Femenia, Pedro
name: Vicente, Avelino
name: Virto, Javier
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: High Energy Physics - Lattice (hep-lat)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: $\tt DsixTools$ is a Mathematica package for the handling of the Standard Model Effective Field Theory (SMEFT) and the Low-energy Effective Field Theory (LEFT) with operators up to dimension six, both at the algebraic and numerical level. $\tt DsixTools$ contains a visually accessible and operationally convenient repository of all operators and parameters of the SMEFT and the LEFT. This repository also provides information concerning symmetry categories and number of degrees of freedom, and routines that allow to implement this information on global expressions (such as decay amplitudes and cross-sections). $\tt DsixTools$ also performs weak basis transformations, and implements the full one-loop Renormalization Group Evolution in both EFTs (with SM beta functions up to five loops in QCD), and the full one-loop SMEFT-LEFT matching at the electroweak scale.
description: 28 pages + appendices. Several figures and tables. This paper supersedes arXiv:1704.04504. Package available from https://dsixtools.github.io
Extremal discs and the holomorphic extension from convex hypersurfaces
Creators: name: Baracco, Luca
name: Tumanov, Alexander
name: Zampieri, Giuseppe
Publisher: name: arXiv
Year: 2005
Subjects: subject: Complex Variables (math.CV)
subject: FOS: Mathematics
subject: 32A40; 32V25

description: Let D be a convex domain with smooth boundary in complex space and let f be a continuous function on the boundary of D. Suppose that f holomorphically extends to the extremal discs tangent to a convex subdomain of D. We prove that f holomorphically extends to D. The result partially answers a conjecture by Globevnik and Stout of 1991.
Fusion reaction of a weakly-bound nucleus with a deformed target
Creators: name: Choi, Ki-Seok
name: Kim, K. S.
name: Cheoun, Myung-Ki
name: So, W. Y.
name: Hagino, K.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Nuclear Theory (nucl-th)
subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: We discuss the role of deformation of the target nucleus in the fusion reaction of the $^{15}$C + $^{232}$Th system at energies around the Coulomb barrier, for which $^{15}$C is a well-known one-neutron halo nucleus. To this end, we construct the potential between $^{15}$C and $^{232}$Th with the double folding procedure, assuming that the projectile nucleus is composed of the core nucleus, $^{14}$C, and a valance neutron. By taking into account the halo nature of the projectile nucleus as well as the deformation of the target nucleus, we simultaneously reproduce the fusion cross sections for the $^{14}$C + $^{232}$Th and the $^{15}$C + $^{232}$Th systems. Our calculation indicates that the net effect of the breakup and the transfer channels is small for this system.
description: 7 pages, 5 figures
Birmelé, André / Ruster, Thomas, Brauchen wir die Einheit der Kirche?
Creators: name: Schmitt, Michael
Publisher: name: Ökumenische Rundschau
Year: 2025

description: Ökumenische Rundschau, Bd. 37 Nr. 1 (1988): Ökumenische Rundschau, Band 37, Heft 1
Planar Coil Optimization in a Magnetically Shielded Cylinder
Creators: name: Packer, M.
name: Hobson, P. J.
name: Holmes, N.
name: Leggett, J.
name: Glover, P.
name: Brookes, M. J.
name: Bowtell, R.
name: Fromhold, T. M.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Applied Physics (physics.app-ph)
subject: FOS: Physical sciences

description: Hybrid magnetic shields with both active field generating components and high-permeability magnetic shielding are increasingly needed for a variety of technologies and experiments that require precision-controlled magnetic field environments. However, the fields generated by the active components interact with the passive magnetic shield, distorting the desired field profiles. Consequently, optimization of the active components needed to generate user-specified target fields must include coupling to the high-permeability passive components. Here, we consider the optimization of planar active systems, on which an arbitrary static current flows, coupled to a closed high-permeability cylindrical shield. We modify the Green's function for the magnetic vector potential to match boundary conditions on the shield's interior surface, enabling us to construct an inverse optimization problem to design planar coils that generate user-specified magnetic fields inside high-permeability shields. We validate our methodology by designing two bi-planar hybrid active--passive systems, which generate a constant transverse field, $\mathbf{B}=\mathbf{\hat{x}}$, and a linear field gradient, $\mathbf{B}=(-x~\mathbf{\hat{x}}-y~\mathbf{\hat{y}}+2z~\mathbf{\hat{z}})$, respectively. For both systems, the inverse-optimized magnetic field profiles agree well with forward numerical simulations. Our design methodology is accurate and flexible, facilitating the miniaturization of high-performance hybrid magnetic field generating technologies with strict design constraints and spatial limitations.
description: 24 pages, 10 figures
MS4 Open-Earth-Monitor Computing Engine and In-situ Data 1st release and Usability Assessment
Creators: name: Sabbatini, Simone
name: Parente, Leandro
Publisher: name: Zenodo
Year: 2024

description: In-situ datasets are key for the successful realization of the goals of the OEMC project. The back-end components Open-Earth-Monitor computing engine and in-situ O&M data service are the core functional components of the cyberinfrastructure that will ultimately support producing the most accurate and most complete and consistent analysis-ready data. Having all the datasets listed and described in the same tool is a crucial effort in terms of standardization and harmonization, and the starting point to foster accessibility and usability of the datasets provided.
White bodies and colonial history : sexual violence in Kate Grenville’s Lilian’s Story and Mark Behr’s The Smell of Apples
Creators: name: Thomas, Kylie
Publisher: name: University of British Columbia
Year: 2009

description: In this thesis I explore the significance of sexual violence in colonial Australia and apartheid South Africa through analyses of Kate Grenville's Lilian's 5'rory(1985)and Mark Behr's The Smell ofApples(\995). The explicit focus of the thesis is on the sexual violence enacted by white men on white children and the relation between this form of violence and the practices of white racism. I argue that both texts confront instances of sexual violence that have been made unspeakable in colonial history. In the concluding chapter of the thesis I attempt to formulate how it might be possible to represent the violence of the past in an ethical way.
Beate Böckem; Jacopo de‘ Barbari. Künstlerschaft und Hofkultur um 1500
Creators: name: Kraft, Melanie
Publisher: name: Journal für Kunstgeschichte
Year: 2024

description: Rezension zu: Beate Böckem; Jacopo de‘ Barbari. Künstlerschaft und Hofkultur um 1500 (Studien zur Kunst 32); Köln: Böhlau 2016; 516 S , 13 farb u 142 s/w-Abb; ISBN 978-3-412-21886-7
description: Journal für Kunstgeschichte, Bd. 24 Nr. 1 (2020): Journal für Kunstgeschichte