cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Handling a highly structured and spatially variable Point Spread Function in AO images
Creators: name: Schreiber, Laura
name: Diolaiti, Emiliano
name: Bellazzini, Michele
name: Ciliegi, Paolo
name: Foppiani, Italo
name: Greggio, Laura
name: Lanzoni, Barbara
name: Lombini, Matteo
Publisher: name: Proceedings of the AO4ELT2 conference (Publisher: ONERA; Editors: J.-P. Véran, Y. Clénet, T. Fusco)
Year: 2011
Subjects: ADAPTIVE OPTICS
EXTREMELY LARGE TELESCOPES
PATHFINDERS
INSTRUMENTS
WAVEFRONT CORRECTORS
WAVEFRONT SENSING
LASER GUIDE STAR SYSTEMS
ATMOSPHERIC TURBULENCE
REAL-TIME CONTROL
MODELING
POST-PROCESSING

description: Adaptive Optics (AO) has become a key technology for all the main existing 8-meter class
telescopes and it is considered a kind of enabling technology for future Extremely Large Telescopes. AO
systems increase the energy concentration of the Point Spread Function (PSF), but the PSF itself is also
characterized by complex shape and spatial variation. Efforts in the AO PSF modelling and in the
integration of suitable models in a code for image analysis are needed to improve the extraction of highprecision
quantitative science from AO observations. The StarFinder code was one of the first full
attempts to solve the problem of obtaining accurate photometry and astrometry from narrow field AO
images with spatially constant and highly structured PSF. However it still lacks of suitable methods for
handling spatially variable AO PSFs. We are developing a set of models representative of the PSF shapes
and variation across the imaged field that might be obtained from different AO systems. These models are
based on observed data from present telescopes. This effort is part of a project aimed at upgrading the
StarFinder code and provide it with a set of tools to handle spatially variable PSFs.
Barkhausen instabilities from labyrinthine magnetic domains
Creators: name: Benassi, Andrea
name: Zapperi, Stefano
Publisher: name: arXiv
Year: 2011
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: Experimental investigations of the scaling behavior of Barkhausen avalanches in out-of-plane ferromagnetic films yield widely different results for the values of the critical exponents despite similar labyrinthine domain structures, suggesting that universality may not hold for this class of materials. Analyzing a phase field model for magnetic reversal, we show that avalanche scaling is bounded by characteristic lengthscales arising from the competition between dipolar forces and exchange interactions. We compare our results with the experiments and find a good qualitative and quantitative agreement, reconciling apparent contradictions. Finally, we make some prediction, amenable to experimental verification, on the dependence of the avalanches behavior from the film thickness and disorder.
Theory of single-electron heat engines coupled to electromagnetic environments
Creators: name: Ruokola, Tomi
name: Ojanen, Teemu
Publisher: name: arXiv
Year: 2012
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We introduce a new class of mesoscopic heat engines consisting of a tunnel junction coupled to a linear thermal bath. Work is produced by transporting electrons up against a voltage bias like in ordinary thermoelectrics but heat is transferred by microwave photons, allowing the heat bath to be widely separated from the electron system. A simple and generic formalism capable of treating a variety of different types of junctions and environments is presented. We identify the systems and conditions required for maximal efficiency and maximal power. High efficiencies are possible with quantum dot arrays but high power can also be achieved with metallic systems.
description: 8 pages, 2 figures
Cosmology of Horava-Lifshitz f(R) Gravity
Creators: name: Chakrabarti, Sayan K.
name: Dutta, Koushik
name: Sen, Anjan A.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We discuss the cosmology of recently proposed Horava-Lifshitz f(R) gravity. In particular, we derive the modified Hubble equation that reduces to the standard HL gravity case in appropriate limit. We show how the bounce solutions in this theory are modified due to nonlinear effect of f(R) gravity. We also show that in principle, the Universe in this set-up can show cyclic behavior.
description: 8 pages, revised version with added figures showing bounce; abstract slightly changed, more discussions on different issues are added with conclusions unchanged; new references added. Accepted for publication in Physics Letters B
title: Коллективная деятельность как тенденция: начинаем с дошкольников
Creators: name: Филиппова, Е. В.
Publisher: name: Новгородский государственный университет имени Ярослава Мудрого (НовГУ)
Year: 2021

description: Статья посвящена актуальной проблеме формирования умений коллективной деятельности детей дошкольного возраста посредством игры. Приведены результаты применения четырех методик диагностики умений коллективного взаимодействия детей; обосновывается программа, направленная на их формирование.
FAIRification efforts of clinical researchers: the current state of affairs - Included respondents
Creators: name: Kersloot, Martijn G.
name: van Damme, Philip
name: Abu-Hanna, Ameen
name: Arts, Derk L.
name: Cornet, Ronald
Publisher: name: figshare
Year: 2021
Subjects: Uncategorized

description: This supplementary information for "FAIRification efforts of clinical researchers: the current state of affairs" includes the demographics of the included respondents.
Beyond the Friedmann-Lemaitre-Robertson-Walker Big Bang singularity
Creators: name: Stoica, Ovidiu-Cristinel
Publisher: name: arXiv
Year: 2012
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: Mathematical Physics (math-ph)
subject: Differential Geometry (math.DG)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: Einstein's equation, in its standard form, breaks down at the Big Bang singularity. A new version, equivalent to Einstein's whenever the latter is defined, but applicable in wider situations, is proposed. The new equation remains smooth at the Big Bang singularity of the Friedmann-Lemaitre-Robertson-Walker model. It is a tensor equation defined in terms of the Ricci part of the Riemann curvature. It is obtained by taking the Kulkarni-Nomizu product between Einstein's equation and the metric tensor.
description: To appear in CTP, 8 pages, 1 figure
title: Proposals for new French DRLs values
Creators: name: Chateil, Jean-Francois
Publisher: name: ESR EuroSafe Imaging
Year: 2019
Subjects: subject: Quality assurance
subject: Education and training
subject: Dosimetric comparison
subject: Radiation safety
subject: CT
subject: Conventional radiography
subject: Radioprotection / Radiation dose
subject: Action 5 - Performance indicators for radiation protection management
subject: Action 2 - Clinical diagnostic reference levels (DRLs)

description: Background/introduction Description of activity and work performed Conclusion and recommendations Personal/organisational information References
description: Background/introduction: Diagnostic reference levels (DRLs) are one of the tools currently used to optimize patient dose in medical imaging. First introduced by the International Commission on Radiological Protection (ICRP) in 1996, this concept has been used by...
Zalarnaca Gorochov 2005
Creators: name: Bian, Xun
name: Shi, Fu-Ming
Publisher: name: Zenodo
Year: 2015
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Orthoptera
Haglidae
Zalarnaca

description: Genus Zalarnaca Gorochov, 2005
 Zalarnaca Gorochov, 2005: 820; Gorochov, 2008: 89.
 Type species: Zalarnaca aculeata Gorochov, 2005, by original designation.
DIAGNOSIS. Body small for the subfamily, fully winged. Fastigium verticis broad, ocelli absent or inconspicuous. Humeral sinus of pronotum indistinct. Tegmina and hind wings considerably surpassing apices of hind femora. Fore coxae with one small spine; fore and middle femora unarmed on ventral surface; fore and middle tibiae with 5 pairs of spurs (including a pair of apical spurs) on ventral surface; hind femora with two rows of spines on ventral surface; dorsal surface of hind tibiae with two rows of spines, and apices with a pair of dorsal and two pairs of ventral spurs. Second and third abdominal tergites with stridulatory teeth on lateral margins. Male: posterior margin of ninth abdominal tergite with 1 pair of hook-shaped processes; tenth abdominal tergite with a pair of small tuberculate processes situated between previous procresses; subgenital plate simple with developed styli. Female: posterior margin of seventh abdominal sternite with one process, which pointed backwards, or only its traces.
description: Published as part of Bian, Xun & Shi, Fu-Ming, 2015, A Newly Recorded Genus Zalarnaca Gorochov (Orthoptera: Stenopelmatoidea: Gryllacridi- Nae) From China, pp. 10-13 in Far Eastern Entomologist 302 on page 11, DOI: 10.5281/zenodo.10084255
Essays on measuring and valuing productivity loss due to poor health
Creators: name: Zhang, Wei
Publisher: name: University of British Columbia
Year: 2014

description: Traditionally, productivity loss has been measured according to illness-related absence from work (absenteeism) only. However, there is increasing evidence that presenteeism (reduced intensity and/or quality of labour input) is an even greater source of productivity losses. In addition to empirical measurement issues, there are theoretical issues with regard to productivity valuation. The traditional human capital method assumes that the value of productivity loss to society should be measured as the present values of lost time according to the wage, which is supposed to be equal to the marginal productivity of labour in a competitive labour market. The alternative, friction cost method, is based on the same assumption except that it adjusts for unemployment. However, these methods ignore the effects of risk aversion and team production which cause the wage to be lower than the marginal productivity. Existing productivity questionnaires did not capture sufficient information to enable the proper measurement and valuation of productivity loss from a societal perspective. A new questionnaire, Valuation of Lost Productivity (VOLP), was developed to capture all the time input loss components(absenteeism, presenteeism, employment status changes, and unpaid work productivity loss) as well as information on job and workplace characteristics, based on which wage multipliers can be calculated to value the productivity loss attributable to the reduced time input of workers. The thesis provides evidence for the validity of the VOLP in measuring time input loss due to poor health and its feasibility in evaluating the treatment effect on productivity in people with rheumatoid arthritis. The equality between wage and marginal productivity was tested using the Workplace and Employ Survey, a linked employer-employee database in Canada. Some evidence suggests that team workers are underpaid compared with their relatively higher iii productivity. In small firms, higher absenteeism results in lower productivity and wage, and the marginal productivity loss with respect to team worker absenteeism is higher than the wage loss. Furthermore, for team workers, health-related frequent reduction at work results in lower productivity and the resulted productivity loss is more than the wage differentials.
title: Implementation of a Clinical Decision Support self developed tool for women in childbearing age
Creators: name: Ulla, Marina
Publisher: name: ESR EuroSafe Imaging
Year: 2019
Subjects: subject: Action 6 - Clinical audit tool for imaging
subject: Radioprotection / Radiation dose
subject: Management
subject: RIS
subject: Radiation safety
subject: Quality assurance

description: Background/introduction Description of activity and work performed Conclusion and recommendations Personal/organisational information References
description: Background/introduction: Clinical Decision Support System (CDSS) allows health providers to be guided during the medical act to ensure the correct diagnosis and treatment. (1) Imaging CDSS represents the iterative interaction between a physician and a computer software at...
On the evolution equations for ideal magnetohydrodynamics in curved spacetime
Creators: name: Pugliese, Daniela
name: Kroon, Juan A. Valiente
Publisher: name: arXiv
Year: 2011
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: We examine the problem of the construction of a first order symmetric hyperbolic evolution system for the Einstein-Maxwell-Euler system. Our analysis is based on a 1+3 tetrad formalism which makes use of the components of the Weyl tensor as one of the unknowns. In order to ensure the symmetric hyperbolicity of the evolution equations implied by the Bianchi identity, we introduce a tensor of rank 3 corresponding to the covariant derivative of the Faraday tensor. Our analysis includes the case of a perfect fluid with infinite conductivity (ideal magnetohydrodynamics) as a particular subcase.
description: 25 pages, no figures. New references added. Comments added in the Introduction. Accepted for publication in General Relativity and Gravitation
Spin-chain description of fractional quantum Hall states in the Jain series
Creators: name: Wang, Zheng-Yuan
name: Takayoshi, Shintaro
name: Nakamura, Masaaki
Publisher: name: arXiv
Year: 2012
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Mathematical Physics (math-ph)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We discuss the relationship between fractional quantum Hall (FQH) states at filling factor $ν=p/(2p+1)$ and quantum spin chains. This series corresponds to the Jain series $ν=p/(2mp+1)$ with $m=1$ where the composite fermion picture is realized. We show that the FQH states with toroidal boundary conditions beyond the thin-torus limit can be mapped to effective quantum spin S=1 chains with $p$ spins in each unit cell. We calculate energy gaps and the correlation functions for both the FQH systems and the corresponding effective spin chains, using exact diagonalization and the infinite time-evolving block decimation (iTEBD) algorithm. We confirm that the mass gaps of these effective spin chains are decreased as $p$ is increased which is similar to $S=p$ integer Heisenberg chains. These results shed new light on a link between the hierarchy of FQH states and the Haldane conjecture for quantum spin chains.
description: 8 pages and 3figures
Fat Hoffman graphs with smallest eigenvalue at least $-1-τ$
Creators: name: Munemasa, Akihiro
name: Sano, Yoshio
name: Taniguchi, Tetsuji
Publisher: name: arXiv
Year: 2011
Subjects: subject: Combinatorics (math.CO)
subject: Discrete Mathematics (cs.DM)
subject: FOS: Mathematics
subject: FOS: Computer and information sciences
subject: 05C50, 05C75

description: In this paper, we show that all fat Hoffman graphs with smallest eigenvalue at least -1-τ, where τis the golden ratio, can be described by a finite set of fat (-1-τ)-irreducible Hoffman graphs. In the terminology of Woo and Neumaier, we mean that every fat Hoffman graph with smallest eigenvalue at least -1-τis an H-line graph, where H is the set of isomorphism classes of maximal fat (-1-τ)-irreducible Hoffman graphs. It turns out that there are 37 fat (-1-τ)-irreducible Hoffman graphs, up to isomorphism.
description: 19 pages, 10 figures
title: Low –dose and low-contrast CT without ECG-synchronization for congenital heart disease evaluation in children
Creators: name: Yalynska, Tetyana
Publisher: name: ESR EuroSafe Imaging
Year: 2019
Subjects: subject: Cardiovascular system
subject: Action 7 - Radiation protection of children
subject: Paediatric
subject: CT-Angiography
subject: Computer Applications-Detection, diagnosis
subject: Congenital

description: Background/introduction Description of activity and work performed Conclusion and recommendations Personal/organisational information References
description: Background/introduction: Congenital heart disease (CHD) is the most commonly occurring congenital anomaly, affecting 4-10/1000 live births. Neonatal congenital heart disease is the most difficult area of diagnostic radiology because of the small body size, unstable vital...
title: Let´s get real: implementating Spanish Radiology "not-to-do" Safe Imaging Recommendations at the local ER setting
Creators: name: Martínez Schmickrath, Marta
Publisher: name: ESR EuroSafe Imaging
Year: 2019
Subjects: subject: Action 1 - Guidelines, implementation policies, and Clinical Decision Support (ESR iGuide)
subject: Action 6 - Clinical audit tool for imaging
subject: Action 8 - Radiation protection training and learning material
subject: Radioprotection / Radiation dose
subject: Trauma
subject: Emergency
subject: Plain radiographic studies
subject: Health policy and practice
subject: Audit and standards
subject: Cost-effectiveness
subject: Quality assurance
subject: Workforce

description: Background/introduction Description of activity and work performed Conclusion and recommendations Personal/organisational information References
description: Background/introduction: in 2013: Spanish Health Ministry organized a National "Not-to-do" campaing , wit all the National Scientific Comitees involved, asking them to select at least 5 Recommendations in order to implent tem in our Health System. Our SERAM (Spanish Society...
Top Quark Forward-Backward Asymmetry and Anomalous Right-Handed Charge Currents
Creators: name: Ng, John N.
name: Winslow, Peter T.
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Recent measurements of the top quark forward-backward asymmetry at the Tevatron could hint at new physics with an unexpected flavor structure. The significance of such an abnormal flavor structure in alleviating the tension between the various determinations of $|V_{ub}|$ via right-handed charge currents is studied. In particular, we elaborate on how the associated new flavor changing couplings naturally allow for the generation of anomalous loop-induced right-handed charge currents which can simultaneously remove the tension in the determinations of $|V_{ub}|$ and escape the tight indirect bounds from $B \ra X_s γ$.
description: 20 pages, 8 figures, references added, minor changes to text, new collider signatures added, matches version accepted for publication in JHEP
Isometry groups among topological groups
Creators: name: Niemiec, Piotr
Publisher: name: arXiv
Year: 2012
Subjects: subject: Group Theory (math.GR)
subject: General Topology (math.GN)
subject: FOS: Mathematics
subject: 22A05, 54H11 (Primary) 57N20 (Secondary)

description: It is shown that a topological group G is topologically isomorphic to the isometry group of a (complete) metric space iff G coincides with its G-delta-closure in the Rajkov completion of G (resp. if G is Rajkov-complete). It is also shown that for every Polish (resp. compact Polish; locally compact Polish) group G there is a complete (resp. proper) metric d on X inducing the topology of X such that G is isomorphic to Iso(X,d) where X = l_2 (resp. X = Q; X = Q\{point} where Q is the Hilbert cube). It is demonstrated that there are a separable Banach space E and a nonzero vector e in E such that G is isomorphic to the group of all (linear) isometries of E which leave the point e fixed. Similar results are proved for an arbitrary complete topological group.
description: 30 pages
title: REDOX IMBALANCE INDICATORS IN HEALTH CARE WORKERS OCCUPATIONALLY EXPOSED TO IONIZING RADIATION
Creators: name: Marti-Bonmati, Luis
Publisher: name: ESR EuroSafe Imaging
Year: 2019
Subjects: subject: Action 7 - Radiation protection of children
subject: Oncology
subject: SPECT-CT
subject: Dosimetry
subject: Biological effects

description: Background/introduction Description of activity and work performed Conclusion and recommendations Personal/organisational information References
description: Background/introduction: AIM To determine the blood antioxidant-oxidant status of different hospital staff groups exposed to low-doses of ionizing radiation and control subjects and to evaluate the association between dietary total antioxidant capacity and...
title: Эволюция микротранзакций в игровой индустрии
Creators: name: Васильев, Д. А.
Publisher: name: Новгородский государственный университет имени Ярослава Мудрого (НовГУ)
Year: 2021

description: В данной статье рассказывается об эволюции микротранзакций в игровой индустрии, различных моделях монетизации, успехах и неудачах в игровой индустрии на поприще микротранзакций. Обращается внимание на проблему выбора модели монетизации для успеха проекта.
Microglial Activation in Rat Experimental Spinal Cord Injury Model
Creators: name: Alireza Abdanipour
name: Taki Tiraihi
name: Taheri, Taher
name: Kazemi, Hadi
Publisher: name: the Pasteur Institute of Iran
Year: 1996
Subjects: subject: Basic Sciences

description: Iranian Biomedical Journal (IBJ); ISSN 1028-852X
title: Referring physician indication review and evaluation process to asses justification: both radiologists and primary physicians at work!
Creators: name: Sanabria, Jesús
Publisher: name: ESR EuroSafe Imaging
Year: 2019
Subjects: subject: Action 6 - Clinical audit tool for imaging
subject: Action 7 - Radiation protection of children
subject: Radioprotection / Radiation dose
subject: Management
subject: CT
subject: Digital radiography
subject: Fluoroscopy
subject: Decision analysis
subject: Radiation safety
subject: Quality assurance

description: Background/introduction Description of activity and work performed Conclusion and recommendations Personal/organisational information References
description: Background/introduction: The increase in requests for diagnostic imaging studies has grown exponentially in the last decade, especially those of computed tomography (CT) and interventional and hemodynamic processes that deliver doses considered threshold for deterministic...
title: National and Provincial DRLs for Common Adult CT Scans in Canada
Creators: name: Ferderbar, Michelle
Publisher: name: ESR EuroSafe Imaging
Year: 2019
Subjects: subject: Action 2 - Clinical diagnostic reference levels (DRLs)
subject: Radioprotection / Radiation dose
subject: Radiographers
subject: CT
subject: Dosimetry
subject: Safety
subject: Radiation safety
subject: Dosimetric comparison

description: Background/introduction Description of activity and work performed Conclusion and recommendations Personal/organisational information References
description: Background/introduction: The International Committee on Radiological Protection (ICRP) promotes the As Low As Reasonably Achievable (ALARA) principle as a guideline for diagnostic imaging [1]. If one follows this principle, the effects associated with imaging can be...
In whom do we trust? The level and radius of social trust among sport club members
Creators: name: Burrmann, Ulrike
name: Braun, Sebastian
name: Mutz, Michael
Publisher: name: Humboldt-Universität zu Berlin
Year: 2020
Subjects: subject: Civic culture
subject: civil society
subject: social capital
subject: social trust
subject: sport club
subject: 796 Sportarten und Sportspiele

description: This paper refers to the widespread notion that voluntary (sport) organizations produce social capital, popularized through the works of Robert D. Putnam, and compares social trust levels of sport club members with members in other voluntary associations and non-members. We differentiate between in-group trust and out-group trust, highlighting that not only the level of trust but also the “trust radius” counts for social cohesion in modern societies. Refining Putnam’s claims, we argue that social trust among members varies with the quality and intensity of participation captured (for instance, through volunteering), diverse social contacts and the level of membership trust experienced in an association. Based on a nation-wide survey, carried out in Germany during 2017/2018, it is demonstrated that members of civic associations indicate higher levels of trust towards in-groups and out-groups compared to non-members and they regard present society as more solidary and trusting. A fine-grained analysis among members of associations further shows that increased trust is typical for volunteers and individuals in socially diverse associations which, at the same time, are characterized by high levels of membership trust. We conclude that sports clubs need to provide beneficial context conditions for producing high levels and a wider radius of trust.
Temporal correlations of elongated Bose gases at finite temperature
Creators: name: Bezett, Alice
name: Lundh, Emil
Publisher: name: arXiv
Year: 2011
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: FOS: Physical sciences

description: Temporal correlations in the harmonically trapped finite temperature Bose gas are studied through the calculation of appropriate phase correlation functions. A wide parameter regime is covered to ascertain the role that temperature fluctuations and trap geometry play in the temporal coherence of the 1D to 3D crossover region. Bogoliubov analysis is used to establish results in the 1D and spherical limits. Formalism is then developed using the projected Gross-Pitaevskii equation to calculate correlation functions in 3D simulations of varying trap elongation and temperature.
description: 8 pages, 5 figures
title: CT DRL value for adult patients in a University Hospital from Brazil
Creators: name: de Oliveira, Christian
Publisher: name: ESR EuroSafe Imaging
Year: 2019
Subjects: subject: Action 2 - Clinical diagnostic reference levels (DRLs)
subject: Radioprotection / Radiation dose
subject: Radiation physics
subject: CT
subject: Radiation safety
subject: Quality assurance

description: Background/introduction Description of activity and work performed Conclusion and recommendations Personal/organisational information References
description: Background/introduction: Computed Tomography (CT) is a very important tool for diagnostics in many fields of medical expertise. Organisation for Economic Co-operation and Development data shows that in most countries CT exams have doubled in the last decade [1]. This recent...
title: Size-specific institutional diagnostic reference levels for computed tomography of the neck
Creators: name: Boos, Johannes
Publisher: name: ESR EuroSafe Imaging
Year: 2019
Subjects: subject: Action 2 - Clinical diagnostic reference levels (DRLs)
subject: Action 4 - Dose management systems
subject: Action 9 - Facilitation of research in advanced topics of radiation protection
subject: Head and neck
subject: CT
subject: CT-Angiography
subject: Radiation safety
subject: Quality assurance

description: Background/introduction Description of activity and work performed Conclusion and recommendations Personal/organisational information References
description: Background/introduction: Diagnostic reference levels (DRLs) are an important quality assurance tool in radiology departments (1-2). Today, most DRLs provide a volumetric computed tomography dose index (CTDIvol) and a dose length product (DLP) for each anatomical region and...
Multi-orbital physics in Fermi liquids prone to magnetic order
Creators: name: Behrmann, Malte
name: Piefke, Christoph
name: Lechermann, Frank
Publisher: name: arXiv
Year: 2012
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The interplay of spin-orbit-coupling and strong electronic correlations is studied for the single-layer and the bilayer compound of the strontium ruthenate Ruddlesden-Popper series by a combination of first-principles band-structure theory with mean-field rotationally invariant slave bosons. At equilibrium strongly renormalized (spin-orbit-split) quasiparticle bands are traced and a thorough description of the low-energy regime for the nearly ferromagnetic bilayer system in accordance with experimental data is presented. The metamagnetic response of Sr$_3$Ru$_2$O$_7$ in finite magnetic field $H$ is verified and a detailed analysis of the underlying correlated electronic structure provided. Intriguing multi-orbital physics on both local and itinerant level, such as e.g. competing paramagnetic and diamagnetic contributions, is observed with important differences depending on the magnetic-field angle $θ$ with the crystallographic c axis.
description: 15 pages, 19 figures
Quasi-real-time end-to-end adaptive optics simulations at the E-ELT scale
Creators: name: Gratadour, Damien
name: Sevin, Arnaud
Publisher: name: Proceedings of the AO4ELT2 conference (Publisher: ONERA; Editors: J.-P. Véran, Y. Clénet, T. Fusco)
Year: 2011
Subjects: ADAPTIVE OPTICS
EXTREMELY LARGE TELESCOPES
PATHFINDERS
INSTRUMENTS
WAVEFRONT CORRECTORS
WAVEFRONT SENSING
LASER GUIDE STAR SYSTEMS
ATMOSPHERIC TURBULENCE
REAL-TIME CONTROL
MODELING
POST-PROCESSING

description: Our team has started the development of a code dedicated to GPUs for the simulation of adaptive
optics systems at the E-ELT scale. It uses the CUDA toolkit and an original binding to Yorick (an open source
interpreted language) to provide the user with a comprehensive interface. In this paper we present the first performance
analysis of our simulation code, showing its ability to provide Shack-Hartmann (SH) images and measurements
at the kHz scale for VLT-sized AO system and in quasi-real-time (up to 70 Hz) for ELT-sized systems on a
single top-end GPU. The simulation code includes multiple layers atmospheric turbulence generation, ray tracing
through these layers, image formation at the focal plane of every sub-aperture of a SH sensor using either natural
or laser guide stars and centroiding on these images using various algorithms. Turbulence is generated on-the-fly
giving the ability to simulate hours of observations without the need of loading extremely large phase screens in
the global memory. Because of its performance this code additionally provides the unique ability to test real-time
controllers for future AO systems under nominal conditions.
Efficient measurement-based quantum computing with continuous-variable systems
Creators: name: Ohliger, Matthias
name: Eisert, Jens
Publisher: name: arXiv
Year: 2011
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We present strictly efficient schemes for scalable measurement-based quantum computing using continuous-variable systems: These schemes are based on suitable non-Gaussian resource states, ones that can be prepared using interactions of light with matter systems or even purely optically. Merely Gaussian measurements such as optical homodyning as well as photon counting measurements are required, on individual sites. These schemes overcome limitations posed by Gaussian cluster states, which are known not to be universal for quantum computations of unbounded length, unless one is willing to scale the degree of squeezing with the total system size. We establish a framework derived from tensor networks and matrix product states with infinite physical dimension and finite auxiliary dimension general enough to provide a framework for such schemes. Since in the discussed schemes the logical encoding is finite-dimensional, tools of error correction are applicable. We also identify some further limitations for any continuous-variable computing scheme from which one can argue that no substantially easier ways of continuous-variable measurement-based computing than the presented one can exist.
description: 13 pages, 3 figures, published version
Sigma term and strangeness content of octet baryons
Creators: name: Durr, S.
name: Fodor, Z.
name: Hemmert, T.
name: Hoelbling, C.
name: Frison, J.
name: Katz, S. D.
name: Krieg, S.
name: Kurth, T.
name: Lellouch, L.
name: Lippert, T.
name: Portelli, A.
name: Ramos, A.
name: Schafer, A.
name: Szabo, K. K.
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: By using lattice QCD computations we determine the sigma terms and strangeness content of all octet baryons by means of an application of the Hellmann-Feynman theorem. In addition to polynomial and rational expressions for the quark mass dependence of octet members, we use SU(3) covariant baryon chiral perturbation theory to perform the extrapolation to the physical up and down quark masses. Our N_f=2+1 lattice ensembles include pion masses down to about 190 MeV in large volumes (M_πL > 4), and three values of the lattice spacing. Our main results are the nucleon sigma term σ_{πN} = 39(4)(^{+18}_{-7}) and the strangeness content y_{N} = 0.20(7)(^{+13}_{-17}). Under the assumption of validity of covariant baryon χPT in our range of masses one finds y_{N} = 0.276(77)(^{+90}_{-62}).
description: LaTeX. 15 pages, 5 figures. Text and results corrected according to Erratum [Phys. Rev. D 93, 039905(E) (2016)]
title: Проблемы и перспективы развития аудита в России
Creators: name: Галкина, Н. В.
Publisher: name: Новгородский государственный университет имени Ярослава Мудрого (НовГУ)
Year: 2021

description: В данной статье рассматриваются проблемы и перспективы развития аудита в России. В современной экономике увеличивается значение аудита в финансовохозяйственной деятельности предприятий разных организационно-правовых форм. На данный момент аудиторская деятельность – это инструмент, предоставляющий руководству
предприятий достоверную, качественную, своевременную и объективную информацию об имуществе и обязательствах организации. Цель данной работы – выявить роль аудита в российской экономике.
The PSF reconstruction effort for NICI, the high-contrast coronagraphic imager of GEMINI observatory: a snapshot
Creators: name: Hartung, M.
name: Gratadour, D.
name: Chun, M.
name: Olguin, R.
name: Hayward, T.
Publisher: name: Proceedings of the AO4ELT2 conference (Publisher: ONERA; Editors: J.-P. Véran, Y. Clénet, T. Fusco)
Year: 2011
Subjects: ADAPTIVE OPTICS
EXTREMELY LARGE TELESCOPES
PATHFINDERS
INSTRUMENTS
WAVEFRONT CORRECTORS
WAVEFRONT SENSING
LASER GUIDE STAR SYSTEMS
ATMOSPHERIC TURBULENCE
REAL-TIME CONTROL
MODELING
POST-PROCESSING

description: PSF reconstruction is a "holy grail" of (astronomical) adaptive optics (AO) instrumentation. Since
the (one?) successful implementation for a curvature system of Veran et al. (from now on JPV) many tried
to implement PSF retrieval on AO supported instrumentation. From the astronomical community these efforts
likely are perceived as an unsatisfying success so far particularly since no observatory to our knowledge has
reached a comparable level of AO telemetry data handling as is standard for the direct scientific data. Since
AO is key for ELTs this should change in a not too far future. Even though more than one and a half decades
ago, the PSF retrieval implementation of JPV for PUEO/CFHT is still the encouraging example and light tower.
Technical reasons for the "viscosity" encountered by many others might be that curvature systems are indeed much
more favorable for PSF retrieval, but it might be as well simply the lack of having dedicated and knowledgeable
manpower on PSF retrieval and AO telemetry data handling working full time at observatories with AO facility
instrumentation. Gemini has two PSF reconstruction efforts ongoing: one for Altair and one on the dual
channel coronagraphic imager NICI presented in this poster. Since recently Gemini is collaborating with Pontificia
Universidad Catolica (PUC) in Chile to assist the observatory exploiting its AO telemetry data. Topics addressed
by this collaboration are the Gemini internal vibration mitigation effort, turbulence profile reconstruction
and PSF retrieval and system monitoring.
Revisiting the Annihilation Corrections in Non-leptonic $\bar{B}_s^0$ Decays within QCD Factorization
Creators: name: Chang, Qin
name: Cui, Xiao-Wei
name: Han, Lin
name: Yang, Ya-Dong
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: Motivated by the recent measurements of non-leptonic $\bar{B}_s^0$ decays by CDF and LHCb collaborations, especially the large ${\cal B}(\bar{B}_s^0\toπ^+π^-)$, we revisit the hard spectator and annihilation corrections in $\bar{B}_s^0$ decays within QCD factorization approach with two schemes for the possible parameters for the known end-point divergence appeared in the estimation of the hard spectator and annihilation diagrams. The first one is to conservatively estimate the possible contributions by parameterization (scheme I); another one uses an infrared finite gluon propagator (scheme II) to regulate the end-point singularity. In scheme I, with the constraints from the measured $\bar{B}_s^0\to PP (VV)$ decays, two (four) restricted solutions of the parameters spaces are found. In scheme II, we find that most of the theoretical predictions agree well with the experimental data with single parameter $m_{g}\sim 0.5{\rm GeV}$. However, within both schemes, ${\cal B}(\bar{B}_s^0\toϕϕ)$ are always much larger than ${\cal B}(\bar{B}_s^0\to K^{\ast 0}\bar{K}^{\ast 0})$ in contrast to the experimental results ${\cal B}(\bar{B}_s^0\toϕϕ)\simeq{\cal B}(\bar{B}_s^0\to K^{\ast 0}\bar{K}^{\ast 0})$. It is noted that the pattern ${\cal B}(\bar{B}_s^0\toϕϕ)>{\cal B}(\bar{B}_s^0\to K^{\ast 0}\bar{K}^{\ast 0})$ also persists in other theoretical framework, thus the present experimental result ${\cal B}(\bar{B}_s^0\toϕϕ) \simeq {\cal B}(\bar{B}_s^0\to K^{\ast 0}\bar{K}^{\ast 0})$ rises a challenge to theoretical approaches for B non-leptonic decays. Further refined measurements and theoretical studies are called for to resolve such a possible anomaly.
description: 25pages, 6 figures; minor typos corrected; version to appear in Phys. Rev. D
Microbial community structure and ecology of Marine Group A bacteria in the oxygen minimum zone of the Northeast subarctic Pacific Ocean
Creators: name: Wright, Jody Jennifer
Publisher: name: University of British Columbia
Year: 2013

description: Oxygen minimum zones (OMZs) are intrinsic water column features that arise when the respiratory oxygen (O2) demand during microbial remineralization of organic matter exceeds O2 supply rates in poorly ventilated regions of the ocean. Microbial processes play a key role in mediating biogeochemical cycling of nutrients and radiatively active trace gases in OMZs. Specific roles of individual microbial groups and the ecological interactions among groups that drive OMZ biogeochemistry on a global scale, however, remain poorly constrained. This dissertation focuses on describing microbial community structure in the world’s largest and least studied OMZ, located in the Northeast subarctic Pacific Ocean (NESAP), with a specific emphasis on characterizing the ecology of Marine Group A, an uncultivated candidate phylum of bacteria found to be prevalent in this region. To begin, I performed a survey of microbial community structure in the NESAP at two time points and over a range of depths based on traditional ecological analyses. I applied techniques derived from network theory to identify co-occurrence patterns among microbial groups within the NESAP and determined that MGA bacteria most frequently co-occurred with other MGA bacteria, suggesting that intra-phylum interactions may play a role in governing microbial processes in this region. Through analysis of small subunit ribosomal rRNA (SSU rRNA) gene sequences affiliated with MGA, I identified 8 novel subgroups and established the phylogeny and population structure of both novel and previously detected MGA subgroups. Finally, I provided first insights into the metabolic capacity of this little-known candidate phylum through investigations of metagenomic data obtained from NESAP waters. Analysis of large-insert genomic DNA fragments derived from MGA revealed protein-coding genes associated with adaptation to oxygen deficiency and sulfur-based energy metabolism. These observations may implicate MGA bacteria in the cryptic sulfur cycle, recently discovered to play a central role in biogeochemical cycling within OMZs. This work describes the first survey of microbial community structure in the NESAP OMZ and the first application of co-occurrence networks to study the ecology of deep ocean microbial communities, in addition to the first analysis of the diversity, population structure, and metabolic capacity of the enigmatic bacterial lineage MGA.
Dusty star-forming galaxies and their environments
Creators: name: Cairns, Joseph
Publisher: name: Imperial College London
Year: 2022

description: Since their discovery over three decades ago, there has been astounding progress in our understanding of DSFGs. Roughly half all optical and UV emission from star formation is absorbed and re-radiated as infrared light by dust. This dust enshrouded star formation is contained within DSFGs, with some harbouring SFRs of thousands of solar masses per year, yielding infrared luminosities greater than $10^{13}$\,L$_{\odot}$. DSFGs are thought to be the progenitors of elliptical galaxies that are predominantly found within massive, galaxy clusters in the local Universe. This thesis aims to build on this progress by investigating the nature of DSFGs and their environments. We first investigate the molecular gas properties of galaxies in the Antlia cluster, a potentially useful low redshift analogue to developing protoclusters at higher redshifts. We find that the disturbed cluster environment is not strong enough to strip the molecular gas reservoirs of its member galaxies, yielding the observed high SFRs in this population. We also study the properties of candidate members of the massive SpARCS-0330 galaxy cluster at $z \sim 1.6$, where we find significant ongoing star formation. Quenching in SpARCS-0330 is likely driven by secular processes that scale with stellar mass rather than environment, suggesting that either the cluster environment cannot truncate star formation or the galaxy members have not yet inhabited the cluster for long enough to be significantly affected. We also investigate the multiplicities and properties of four candidate z > 4 DSFGs. We find that three resolve into multiple components, suggesting that this population is more diverse than predicted by simulations. We additionally investigate SDSS1607, a fascinating quasar-SMG system at z = 3.65, using observations from the VLA, SMA and HST. Finally, we discuss the implications of these results and the exciting avenues for future research produced by this work.
Replication and Reproducibility in Social Sciences and Statistics: Context, Concerns, and Concrete Measures
Creators: name: Vilhuber, Lars
Publisher: name: Zenodo
Year: 2019

description: Abstract

Replicability is at the core of the scientific enterprise. In the past 30 years, recurring concerns about the extent of replicability (or lack thereof) of the research in various disciplines have surfaced, including in economics.

In this talk, I describe the context in which the current discussion in the social science is occurring: what are the definitions of replicability and reproducibility, what is failing, and to what extent. In particular, I discuss the concerns in economics: to what extent is this a problem in economics, what are the approaches that are being considered, and what are the possible broader implications of those approaches. Finally, I discuss the concrete measures that are being implemented under my guidance at the American Economic Association, and that are being discussed in the broader economics community.

The solutions to these problems will change the way research will be taught and conducted, in economics in particular, and in the social sciences more broadly. The implications affect undergraduate and graduate teaching, research infrastructure, and habits.

Presentation at UCLA on 2019-01-28.
description: The opinions expressed in this talk are solely the authors, and do not represent the views of the U.S. Census
Bureau, the American Economic Association, or any of the funding agencies.
On a completed generating function of locally harmonic Maass forms
Creators: name: Bringmann, Kathrin
name: Kane, Ben
name: Zwegers, Sander
Publisher: name: arXiv
Year: 2012
Subjects: subject: Number Theory (math.NT)
subject: FOS: Mathematics
subject: 11F27, 11F25, 11F37, 11E16, 11F11

description: While investigating the Doi-Naganuma lift, Zagier defined integral weight cusp forms $f_D$ which are naturally defined in terms of binary quadratic forms of discriminant $D$. It was later determined by Kohnen and Zagier that the generating function for the $f_D$ is a half-integral weight cusp form. A natural preimage of $f_D$ under a differential operator at the heart of the theory of harmonic weak Maass forms was determined by the first two authors and Kohnen. In this paper, we consider the modularity properties of the generating function of these preimages. We prove that although the generating function is not itelf modular, it can be naturally completed to obtain a half-integral weight modular object.
First results on a Cn2 profiler for GeMS
Creators: name: Cortes, Angela
name: Neichel, Benoit
name: Guesalaga, Andres
name: Rigaut, Francois
name: Guzman, Dani
Publisher: name: Proceedings of the AO4ELT2 conference (Publisher: ONERA; Editors: J.-P. Véran, Y. Clénet, T. Fusco)
Year: 2011
Subjects: ADAPTIVE OPTICS
EXTREMELY LARGE TELESCOPES
PATHFINDERS
INSTRUMENTS
WAVEFRONT CORRECTORS
WAVEFRONT SENSING
LASER GUIDE STAR SYSTEMS
ATMOSPHERIC TURBULENCE
REAL-TIME CONTROL
MODELING
POST-PROCESSING

description: GeMS (the Gemini MCAO System) is a facility instrument for the Gemini-South telescope.
The system includes five laser guide stars, three natural guide stars, three deformable mirrors optically
conjugated at 0, 4.5 and 9km and one tip-tilt mirror. Some of its unique features include an embedded Cn2
SLODAR profiler which is described in this paper. The Cn2 profile is reconstructed from the slopes seen
by the 5 high order WFS, each one pointing in a laser guide star direction. Residuals from the 16x16
subapertures WFSs and DM commands are used to obtain pseudo-open loop data for SLODAR, allowing
us to reconstruct up to 16 layers. The paper describes the results obtained from different validation steps
followed during the development of the technique, namely: numerical simulations, artificially generated
turbulence via DMs excitation and the use of on-sky data obtained from different commissioning nights.
We also present results from a wind profiler that runs in parallel to SLODAR and finally compare the
results to those from a nearby MASS/DIMM instrument.