cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
A Method to Extract Charged Hadron Properties from Lattice QCD in Magnetic Fields
Creators: name: Tiburzi, B. C.
name: Vayl, S. O.
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: By analyzing the external field dependence of correlation functions, the magnetic properties of hadrons can be determined using lattice QCD in magnetic fields. To compute the magnetic moments and polarizabilities of charged hadrons, for example, one requires sufficiently weak magnetic fields. Such field strengths, however, lead to closely spaced Landau levels that are not straightforwardly resolved using standard lattice spectroscopy. Focusing on charged spinless hadrons, we introduce a simple projection technique that can be used to isolate the lowest Landau level. As the technique requires the explicit coordinate-space wave-function, we investigate the extent to which the continuum, infinite volume wave-function can be employed. We find that, in practice, the effects of discretization can be handled using a perturbative expansion about the continuum. Finite volume corrections are taken into account by using the discrete magnetic translational invariance of the torus. We show that quantized magnetic fields can lead to pernicious volume effects which depend on the magnetic flux quantum, rather than on the lattice volume.
description: 15 pages, 3 figures, v.2 clarifications made, numerical section added
A Design Guideline to Overcome Web Accessibility Issues Challenged by Visually Impaired Community in Sri Lanka
Creators: name: Wedasinghe, N
name: Sirisoma, NT
name: Wickramarachchi, APR
Publisher: name: arXiv
Year: 2023
Subjects: subject: Computers and Society (cs.CY)
subject: FOS: Computer and information sciences

description: Visual-impaired communities are one of the hindrances groups to accessing web content access in the world. The obstacles encountered by this community in their current practices and to develop best practice guidelines to overcome the digital divide in Sri Lanka become gap filling of this domain. A preliminary survey indicated five main problems including access limited by the impairment, usability issues due to lack of design, unavailability of visually impaired-friendly applications, lack of communication, and web navigation issues are the most dominant pertaining issues. To overcome those issues, solutions are tested and validated using the Design Science approach. Result Indicate that significant factors need to be incorporated, ensuring keyboard-friendly websites, easy accessibility and support with semantic annotation by adding alternative text for images. Furthermore, use headers to structure the content correctly, design all forms to support accessibility in mind including Content developing and designing, navigation, the best colour combination, Pre-recorded video with the audio facilities, braille support on the web, the designing option has no significant impact on visually impaired web users. Introducing a rating widget option to a website identifies the level of accessibility features availability facilitates, thereby overcoming the disability digital divide. The results further conclude that a significant difference exists in websites, with and without the involvement of the visually impaired community. Semantic web and semantic annotations of the context of page elements, content serialization, and navigation by special keyboard commands are also highly influencing the effective use of the web and increasing the satisfaction level in the website accessing process.
Ein Hügel mit jungsteinzeitlichen Funden in der Gemeinde Essen, Kr. Cloppenburg
Creators: name: Steffens, Heino-Gerd
Publisher: name: Nachrichten aus Niedersachsens Urgeschichte
Year: 2019

description: Nachrichten aus Niedersachsens Urgeschichte, Bd. 32 (1963): Nachrichten aus Niedersachsens Urgeschichte
Sheaves that fail to represent matrix rings
Creators: name: Reyes, Manuel L.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Rings and Algebras (math.RA)
subject: Algebraic Geometry (math.AG)
subject: Category Theory (math.CT)
subject: FOS: Mathematics
subject: 14A22, 16B50, 18B25, 18F20

description: There are two fundamental obstructions to representing noncommutative rings via sheaves. First, there is no subcanonical coverage on the opposite of the category of rings that includes all covering families in the big Zariski site. Second, there is no contravariant functor F from the category of rings to the category of ringed categories whose composite with the global sections functor is naturally isomorphic to the identity, such that F restricts to the Zariski spectrum functor Spec on the category of commutative rings (in a compatible way with the natural isomorphism). Both of these no-go results are proved by restricting attention to matrix rings.
description: 13 pages; final version
Clinician consensus on “Inappropriate” presentations to the emergency department in the better data, better planning (BDBP) census: a cross-sectional multi-centre study of emergency department utilisation in Ireland
Creators: name: Cummins, Niamh
name: Barry, Louise
name: Garavan, Carrie
name: Devlin, Collette
name: Corey, Gillian
name: Cummins, Fergal
name: RYAN, DAMIEN
name: Wallace, Emma
name: Deasy, Conor
name: Flynn, Mary
name: McCarthy, Gerard
name: Galvin, Rose
Publisher: name: University of Limerick
Year: 2023
Subjects: classificationCode: 42
subject: Health sciences
subject: FOS: Health sciences

description: Background Utilisation of the Emergency Department (ED) for non-urgent care increases demand for services, therefore reducing inappropriate or avoidable attendances is an important area for intervention in prevention of ED crowding. This study aims to develop a consensus between clinicians across care settings about the “appropriateness” of attendances to the ED in Ireland. Methods The Better Data, Better Planning study was a multi-centre, cross-sectional study investigating factors influencing ED utilisation in Ireland. Data was compiled in patient summary files which were assessed for measures of appropriateness by an academic General Practitioner (GP) and academic Emergency Medicine Consultant (EMC) National Panel. In cases where consensus was not reached charts were assessed by an Independent Review Panel (IRP). At each site all files were autonomously assessed by local GP-EMC panels. Results The National Panel determined that 11% (GP) to 38% (EMC) of n=306 lower acuity presentations could be treated by a GP within 24-48 h (k=0.259; p<0.001) and that 18% (GP) to 35% (EMC) of attendances could be considered “inappropriate” (k=0.341; p<0.001). For attendances deemed “appropriate” the admission rate was 47% compared to 0% for “inappropriate” attendees. There was no consensus on 45% of charts (n=136). Subset analysis by the IRP determined that consensus for appropriate attendances ranged from 0 to 59% and for inappropriate attendances ranged from 0 to 29%. For the Local Panel review (n=306) consensus on appropriateness ranged from 40 to 76% across ED sites Conclusions Multidisciplinary clinicians agree that “inappropriate” use of the ED in Ireland is an issue. However, obtaining consensus on appropriateness of attendance is challenging and there was a significant cohort of complex heterogenous presentations where agreement could not be reached by clinicians in this study. This research again demonstrates the complexity of ED crowding, the introduction of evidence-based care pathways targeting avoidable presentations may serve to alleviate the problem in our EDs.
Becker, C. J.: Forromersk Jernalder i Syd- og Midtjylland
Creators: name: Hingst, Hans
Publisher: name: Nachrichten aus Niedersachsens Urgeschichte
Year: 2019

description: Rezension zu: Becker, C. J.: Forromersk Jernalder i Syd- og Midtjylland. 40, 292 S., 127 Taf. Kopenhagen 1961
description: Nachrichten aus Niedersachsens Urgeschichte, Bd. 32 (1963): Nachrichten aus Niedersachsens Urgeschichte
Behn, Friedrich: Vorgeschichtliche Welt
Creators: name: Narr, Karl J.
Publisher: name: Nachrichten aus Niedersachsens Urgeschichte
Year: 2019

description: Rezension zu: Behn, Friedrich: Vorgeschichtliche Welt, Stuttgart 1962. 223 Seit, in 40 einschl. 88 ganzseit. Taf.
description: Nachrichten aus Niedersachsens Urgeschichte, Bd. 32 (1963): Nachrichten aus Niedersachsens Urgeschichte
Direct Statistical Simulation of Out-of-Equilibrium Jets
Creators: name: Tobias, Steven
name: Marston, Brad
Publisher: name: arXiv
Year: 2012
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Atmospheric and Oceanic Physics (physics.ao-ph)
subject: FOS: Physical sciences

description: We present a Direct Statistical Simulation (DSS) of jet formation on a β-plane, solving for the statistics of a fluid flow via an expansion in cumulants. Here we compare an expansion truncated at second order (CE2) to statistics accumulated by direct numerical simulations (DNS). We show that, for jets near equilibrium, CE2 is capable of reproducing the jet structure (although some differences remain in the second cumulant). However as the degree of departure from equilibrium is increased (as measured by the zonostrophy parameter) the jets meander more and CE2 becomes less accurate. We discuss a possible remedy by inclusion of higher cumulants.
de Rham and Dolbeault Cohomology of solvmanifolds with local systems
Creators: name: Kasuya, Hisashi
Publisher: name: arXiv
Year: 2012
Subjects: subject: Differential Geometry (math.DG)
subject: Complex Variables (math.CV)
subject: FOS: Mathematics

description: Let $G$ be a simply connected solvable Lie group with a lattice $Γ$ and the Lie algebra $\g$ and a representation $ρ:G\to GL(V_ρ)$ whose restriction on the nilradical is unipotent. Consider the flat bundle $E_ρ$ given by $ρ$. By using "many" characters $\{α\}$ of $G$ and "many" flat line bundles $\{E_α\}$ over $G/Γ$, we show that an isomorphism \[\bigoplus_{\{α\}} H^{\ast}(\g, V_α\otimes V_ρ)\cong \bigoplus_{\{E_α\}} H^{\ast}(G/Γ, E_α\otimes E_ρ)\] holds. This isomorphism is a generalization of the well-known fact:"If $G$ is nilpotent and $ρ$ is unipotent then, the isomorphism $H^{\ast}(\g, V_ρ)\cong H^{\ast}(G/Γ, E_ρ)$ holds". By this result, we construct an explicit finite dimensional cochain complex which compute the cohomology $H^{\ast}(G/Γ, E_ρ)$ of solvmanifolds even if the isomorphism $H^{\ast}(\g, V_ρ)\cong H^{\ast}(G/Γ, E_ρ)$ does not hold. For Dolbeault cohomology of complex parallelizable solvmanifolds, we also prove an analogue of the above isomorphism result which is a generalization of computations of Dolbeault cohomology of complex parallelizable nilmanifolds. By this isomorphism, we construct an explicit finite dimensional cochain complex which compute the Dolbeault cohomology of complex parallelizable solvmanifolds.
description: 17 pages, I combined arXiv:1207.3988v2 and arXiv:1208.4045v1
Optimal detection of a jump in the intensity of a Poisson process or in a density with likelihood ratio statistics
Creators: name: Rivera, Camilo
name: Walther, Guenther
Publisher: name: arXiv
Year: 2012
Subjects: subject: Methodology (stat.ME)
subject: FOS: Computer and information sciences

description: We consider the problem of detecting a `bump' in the intensity of a Poisson process or in a density. We analyze two types of likelihood ratio based statistics which allow for exact finite sample inference and asymptotically optimal detection: The maximum of the penalized square root of log likelihood ratios (`penalized scan') evaluated over a certain sparse set of intervals, and a certain average of log likelihood ratios (`condensed average likelihood ratio'). We show that penalizing the {\sl square root} of the log likelihood ratio - rather than the log likelihood ratio itself - leads to a simple penalty term that yields optimal power. The thus derived penalty may prove useful for other problems that involve a Brownian bridge in the limit. The second key tool is an approximating set of intervals that is rich enough to allow for optimal detection but which is also sparse enough to allow justifying the validity of the penalization scheme simply via the union bound. This results in a considerable simplification in the theoretical treatment compared to the usual approach for this type of penalization technique, which requires establishing an exponential inequality for the variation of the test statistic. Another advantage of using the sparse approximating set is that it allows fast computation in nearly linear time. We present a simulation study that illustrates the superior performance of the penalized scan and of the condensed average likelihood ratio compared to the standard scan statistic.
Bloch Model Wavefunctions and Pseudopotentials for All Fractional Chern Insulators
Creators: name: Wu, Yang-Le
name: Regnault, N.
name: Bernevig, B. Andrei
Publisher: name: arXiv
Year: 2012
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We introduce a Bloch-like basis in a C-component lowest Landau level fractional quantum Hall (FQH) effect, which entangles the real and internal degrees of freedom and preserves an Nx x Ny full lattice translational symmetry. We implement the Haldane pseudopotential Hamiltonians in this new basis. Their ground states are the model FQH wave functions, and our Bloch basis allows for a mutatis mutandis transcription of these model wave functions to the fractional Chern insulator of arbitrary Chern number C, obtaining wave functions different from all previous proposals. For C > 1, our wave functions are related to color-dependent magnetic-flux inserted versions of Halperin and non-Abelian color-singlet states. We then provide large-size numerical results for both the C = 1 and C = 3 cases. This new approach leads to improved overlaps compared to previous proposals. We also discuss the adiabatic continuation from the fractional Chern insulator to the FQH in our Bloch basis, both from the energy and the entanglement spectrum perspectives.
description: 6+epsilon pages, 2 figures. Published version. Added a discussion of the emergent particle-hole symmetry in a Chern band
Shear viscosity and spin sum rules in strongly interacting Fermi gases
Creators: name: Enss, Tilman
Publisher: name: arXiv
Year: 2012
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Fermi gases with short-range interactions are ubiquitous in ultracold atomic systems. In the absence of spin-flipping processes the number of atoms in each spin species is conserved separately, and we discuss the associated Ward identities. For contact interactions the spin conductivity spectral function sigma_s(omega) has universal power-law tails at high frequency. We derive the spin f-sum rule and show that it is not affected by these tails in d<4 dimensions. Likewise the shear viscosity spectral function eta(omega) has universal tails; in contrast they modify the viscosity sum rule in a characteristic way.
description: 7 pages, published version
Nuclear Quasi-Elastic Electron Scattering Limits Nucleon Off-Mass Shell Properties
Creators: name: Miller, Gerald A.
name: Thomas, Anthony W.
name: Carroll, Jonathan D.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Nuclear Theory (nucl-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Experiment (nucl-ex)
subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: The use of quasi-elastic electron nucleus scattering is shown to provide significant constraints on models of the proton electromagnetic form factor of off-shell nucleons. Such models can be constructed to be consistent with constraints from current conservation and low-energy theorems, while also providing a contribution to the Lamb shift that might potentially resolve the proton radius puzzle in muonic hydrogen. However, observations of quasi-elastic scattering limit the overall strength of the off-shell form factors to values that correspond to small contributions to the Lamb shift.
description: 11 pages, 2 figures. Resubmission to improve the clarity, and correct possible misconceptions
Müller-Karpe, Hermann: Funde von bayerischen Höhensiedlungen
Creators: name: Pescheck, Christian
Publisher: name: Nachrichten aus Niedersachsens Urgeschichte
Year: 2019

description: Rezension zu: Müller-Karpe, Hermann: Funde von bayerischen Höhensiedlungen. Ein Katalog. Prähistorische Staatssammlung München. Verlag Michael Lassleben, Kallmünz (Opf.) 1959, 8«, 26 Seiten, 1 Abbildung und 22 Tafeln
description: Nachrichten aus Niedersachsens Urgeschichte, Bd. 32 (1963): Nachrichten aus Niedersachsens Urgeschichte
Key Actors’ Perspectives on Agroforestry’s Potential in North Eastern Germany
Creators: name: Litschel, Johannes
name: Berendt, Ferréol
name: Wagner, Hanna
name: Heidenreich, Simon
name: Bauer, David
name: Welp, Martin
name: Cremer, Tobias
Publisher: name: Technische Universität Berlin
Year: 2023
Subjects: subject: 700 Künste und Unterhaltung::720 Architektur::720 Architektur
subject: agroforestry
subject: timber products
subject: semi-structured interviews
subject: barrier
subject: opportunity

description: As a land use management system, agroforestry has environmental, economic and societal benefits over conventional agriculture or forestry. Important benefits of combining tree growth with agricultural crops and/or forage production systems include higher biodiversity through more diverse habitats, the control of runoff and soil erosion, the augmentation of soil water availability, the creation of microclimates, carbon sequestration and provision of a more diverse farm economy. As the climate changes, north eastern Germany is likely to be particularly prone to severe effects from droughts and wind erosion in the future. However, the area of land under agroforestry makes up less than 2% of the total agricultural area in Germany. Through qualitative interviews with key actors, this study analyzed the benefits of, potentials for and barriers to implementing agroforestry systems in the federal state of Brandenburg. Results showed that agroforestry systems have significant potential in relation to several benefits, particularly the mitigation of soil erosion and stabilization of microclimate regimes. Additionally, agroforestry has the potential to provide wood for energy production or material uses. Although a small but highly innovative and interlinked community exists, administrative barriers and high start-up costs currently hamper the transition from conventional agriculture to agroforestry systems.
Chelodina novaeguineae
Creators: name: Georges, Arthur
name: Adams, Mark
name: McCORD, William
Publisher: name: Zenodo
Year: 2002
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Reptilia
Testudines
Chelidae
Chelodina
Chelodina novaeguineae

description: Chelodina novaeguineae X rugosa
hybrids: Gilbert River, Qld [18°17'S 143°33'E, N = 2].
description: Published as part of Georges, Arthur, Adams, Mark & McCORD, William, 2002, Electrophoretic delineation of species boundaries within the genus Chelodina (Testudines: Chelidae) of Australia, New Guinea and Indonesia, pp. 401-421 in Zoological Journal of the Linnean Society 134 (4) on page 406, DOI: 10.1046/j.1096-3642.2002.00007.x, http://zenodo.org/record/5434026
Contracts in Practice
Creators: name: Estler, H. -Christian
name: Furia, Carlo A.
name: Nordio, Martin
name: Piccioni, Marco
name: Meyer, Bertrand
Publisher: name: arXiv
Year: 2012
Subjects: subject: Software Engineering (cs.SE)
subject: FOS: Computer and information sciences

description: Contracts are a form of lightweight formal specification embedded in the program text. Being executable parts of the code, they encourage programmers to devote proper attention to specifications, and help maintain consistency between specification and implementation as the program evolves. The present study investigates how contracts are used in the practice of software development. Based on an extensive empirical analysis of 21 contract-equipped Eiffel, C#, and Java projects totaling more than 260 million lines of code over 7700 revisions, it explores, among other questions: 1) which kinds of contract elements (preconditions, postconditions, class invariants) are used more often; 2) how contracts evolve over time; 3) the relationship between implementation changes and contract changes; and 4) the role of inheritance in the process. It has found, among other results, that: the percentage of program elements that include contracts is above 33% for most projects and tends to be stable over time; there is no strong preference for a certain type of contract element; contracts are quite stable compared to implementations; and inheritance does not significantly affect qualitative trends of contract usage.
Negative differential resistances with back gate-controlled lowest operation windows in graphene double barrier resonant tunneling diodes
Creators: name: Song, Yu
name: Wu, Han-Chun
name: Guo, Yong
Publisher: name: arXiv
Year: 2012
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We theoretically investigate negative differential resistance (NDR) of massless and massive Dirac Fermions in double barrier resonant tunneling diodes based on sufficiently short and wide graphene strips. The current-voltage characteristics calculated in a rotated pseudospin space show that, the NDR feature only presents with appropriate structural parameters for the massless case and the peak-to-valley current ratio can be enhanced exponentially by a tunable band gap. Remarkably, the lowest NDR operation window is nearly structure-free and can be almost solely controlled by a back gate, which may have potential applications in NDR devices with the operation window as a crucial parameter.
description: 5 pages, 5 figures
De Vries, Jan: Keltische Religion
Creators: name: Narr, Karl J.
Publisher: name: Nachrichten aus Niedersachsens Urgeschichte
Year: 2019

description: Rezension zu: De Vries, Jan: Keltische Religion (Die Religionen der Menschheit, Hersg. von Chr. M. Schröder. Bd. 18), Stuttgart 1962. XI + 270 Seiten in 80
description: Nachrichten aus Niedersachsens Urgeschichte, Bd. 32 (1963): Nachrichten aus Niedersachsens Urgeschichte
The SEGUE K giant survey II: A Catalog of Distance Determinations for the SEGUE K giants in the Galactic Halo
Creators: name: Xue, Xiang-Xiang
name: Ma, Zhibo
name: Rix, Hans-Walter
name: Morrison, Heather L.
name: Harding, Paul
name: Beers, Timothy C.
name: Ivans, Inese I.
name: Jacobson, Heather R.
name: Johnson, Jennifer
name: Lee, Young Sun
name: Lucatello, Sara
name: Rockosi, Constance M.
name: Sobeck, Jennifer S.
name: Yanny, Brian
name: Zhao, Gang
name: Prieto, Carlos Allende
Publisher: name: arXiv
Year: 2012
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We present an online catalog of distance determinations for $\rm 6036$ K giants, most of which are members of the Milky Way's stellar halo. Their medium-resolution spectra from SDSS/SEGUE are used to derive metallicities and rough gravity estimates, along with radial velocities. Distance moduli are derived from a comparison of each star's apparent magnitude with the absolute magnitude of empirically calibrated color-luminosity fiducials, at the observed $(g-r)_0$ color and spectroscopic [Fe/H]. We employ a probabilistic approach that makes it straightforward to properly propagate the errors in metallicities, magnitudes, and colors into distance uncertainties. We also fold in ${\it prior}$ information about the giant-branch luminosity function and the different metallicity distributions of the SEGUE K-giant targeting sub-categories. We show that the metallicity prior plays a small role in the distance estimates, but that neglecting the luminosity prior could lead to a systematic distance modulus bias of up to 0.25 mag, compared to the case of using the luminosity prior. We find a median distance precision of $16\%$, with distance estimates most precise for the least metal-poor stars near the tip of the red-giant branch. The precision and accuracy of our distance estimates are validated with observations of globular and open clusters. The stars in our catalog are up to 125 kpc distant from the Galactic center, with 283 stars beyond 50 kpc, forming the largest available spectroscopic sample of distant tracers in the Galactic halo.
description: accepted by APJ
title: Возможности и перспективы использования MRP-систем для совершенствования логистической деятельности производственных предприятий
Creators: name: Кудряшова, Татьяна
name: Павель, Елена
name: Петров, Вячеслав
Publisher: name: Новгородский государственный университет имени Ярослава Мудрого (НовГУ)
Year: 2021

description: В статье рассматриваются сущность и основные особенности МRP-систем и MRP II (ERP)-систем; представлена их сравнительная характеристика в разрезе ряда критериев. Наряду с преимуществами, которые дает использование данных систем, приводятся проблемы и сложности их внедрения в реальную практику функционирования предприятий. Авторы дают комментарии по наиболее часто используемым в российской практике МRPсистемам: «DEXMA», «ГОЛЬФСТРИМ», «SAP R3». В качестве примеров успешной практики внедрения MRP-систем в статье рассмотрен опыт реализации проектов в ФГУП «ГКНПЦ имени М.В. Хруничева» и в холдинге «Брис-Босфор». В рамках проведенного исследования изучена возможность и доказана целесообразность внедрения МRP-системы на одном из производственных предприятий г. Великого Новгорода. Для этих целей проанализирована логистическая система предприятия, выявлены ее особенности и основные проблемы, для устранения которых и целесообразно внедрить MRP-систему (блок ERP-системы) на основе метода «Частичного внедрения» на участке, осуществляющем производство одного из ключевых видов продукции предприятия. В статье приведены рекомендации по организации проектных работ, связанных с внедрением данной системы на исследуемом предприятии.
Quantum-correlation breaking channels, quantum conditional probability and Perron-Frobenius theory
Creators: name: Chruściński, Dariusz
Publisher: name: arXiv
Year: 2012
Subjects: subject: Quantum Physics (quant-ph)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: Using the quantum analog of conditional probability and classical Bayes theorem we discuss some aspects of quantum-classical and classical-classical channels in connection to the recent paper J. Korbicz, P. Horodecki, and R. Horodecki, "Quantum-correlation breaking channels, broadcasting scenarios, and finite Markov chains". Applying the quantum analog of Perron-Frobenius theorem we generalize the result of Korbicz et. al. on full and spectrum broadcasting from quantum-classical channels to arbitrary channels.
description: 6 pages
The Influence of Ventilation Measures on the Airborne Risk of Infection in Schools: A Scoping Review
Creators: name: Jendrossek, Sandra N.
name: Jurk, Lukas A.
name: Remmers, Kirsten
name: Cetin, Yunus E.
name: Sunder, Wolfgang
name: Kriegel, Martin
name: Gastmeier, Petra
Publisher: name: Technische Universität Berlin
Year: 2023
Subjects: subject: 600 Technik, Medizin, angewandte Wissenschaften::620 Ingenieurwissenschaften::620 Ingenieurwissenschaften und zugeordnete Tätigkeiten
subject: school
subject: ventilation
subject: CO2 concentration
subject: airborne transmission
subject: SARS-CoV-2

description: Objectives: To review the risk of airborne infections in schools and evaluate the effect of intervention measures reported in field studies. Background: Schools are part of a country’s critical infrastructure. Good infection prevention measures are essential for reducing the risk of infection in schools as much as possible, since these are places where many individuals spend a great deal of time together every weekday in a small area where airborne pathogens can spread quickly. Appropriate ventilation can reduce the indoor concentration of airborne pathogens and reduce the risk of infection. Methods: A systematic search of the literature was conducted in the databases Embase, MEDLINE, and ScienceDirect using keywords such as school, classroom, ventilation, carbon dioxide (CO2) concentration, SARS-CoV-2, and airborne transmission. The primary endpoint of the studies selected was the risk of airborne infection or CO2 concentration as a surrogate parameter. Studies were grouped according to the study type. Results: We identified 30 studies that met the inclusion criteria, six of them intervention studies. When specific ventilation strategies were lacking in schools being investigated, CO2 concentrations were often above the recommended maximum values. Improving ventilation lowered the CO2 concentration, resulting in a lower risk of airborne infections. Conclusions: The ventilation in many schools is not adequate to guarantee good indoor air quality. Ventilation is an important measure for reducing the risk of airborne infections in schools. The most important effect is to reduce the time of residence of pathogens in the classrooms.
Joint Analysis of Gravitational Lensing, Clustering and Abundance: Toward the Unification of Large-Scale Structure Analysis
Creators: name: Yoo, Jaiyul
name: Seljak, Uros
Publisher: name: arXiv
Year: 2012
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We explore three different methods based on weak lensing to extract cosmological constraints from the large-scale structure. In the first approach (method I), small-scale galaxy lensing measurements of their halo mass provide a constraint on the halo bias, which can be combined with the large-scale galaxy clustering to measure the dark matter clustering. In the second approach (method II), large-scale galaxy clustering and large-scale galaxy-galaxy lensing can be combined into a direct measurement of the dark matter clustering. These two methods can be combined into one method I+II to make use of lensing measurements on all scales. In the third approach (method III), we add abundance information to the method I. We explore the statistical power of these three approaches as a function of galaxy luminosity to investigate the optimal mass range for each method and their cosmological constraining power. In the case of the SDSS, we find that the three methods give comparable constraints, but not in the same mass range: the method II works best for halos of M~10^13 Msun, and the methods I and III work best for halos of M~10^14 Msun. We discuss the robustness of each method against various systematics. Furthermore, we extend the analysis to the future large-scale galaxy surveys and find that the cluster abundance method is not superior to the combined method I+II, both in terms of statistical power and robustness against systematic errors. The cosmic shear-shear correlation analysis in the future surveys yields constraints as strong as the combined method, but suffer from additional systematic effects. We thus advocate the combined analysis of clustering and lensing (method I+II) as a powerful alternative to other large-scale probes. Our analysis provides a guidance to observers planning large-scale galaxy surveys such as the DES, Euclid, and the LSST.
description: published in PRD, 19 pages, 9 figures
Long-term Monitoring of Arterial Blood Pressure and Pulse: General Estimates of Readings and Their Relationships
Creators: name: Kuksa, Yuriy
name: Shibaev, Igor
Publisher: name: Zenodo
Year: 2021
Subjects: Heart rate
arterial blood pressure
histogram
spectrum

description: The research is based on long, regular observations of blood pressure and pulse - the heart rate (more than 18 years). The values of these readings are taken from the diary of self-control, which is kept by a patient, one of the authors of this publication, a man born in 1940. Such effective control over the patient's condition, implemented in our case, ensuring its normal vital activity, makes it possible to investigate the influence of external factors on the hemodynamics of the body and the manifestation of the marked temporal characteristics. A difference between the morning and evening series was noted. The characteristics of evening monitoring readings are more balanced. Spectral analysis allows for a more detailed analysis and comparison of the data. Seven-day component is clearly seen in evening series being modulated with three-year period for the pulse. The morning series are characterized by a “lunar” component with the ~27.35-day period. The absence of a weekly period in the morning readings indicates a rapid (moment of sleep) relaxation of the body from the rhythmic stress of the past day. The manifestation of the "lunar" response can be associated with an increased sensitivity of the body during and after the sleep. This work describes the patient's condition through the correlation of blood pressure and heart rate.
Expansion History with Decaying Vacuum: A Complete Cosmological Scenario
Creators: name: Lima, J. A. S.
name: Basilakos, S.
name: Sola, Joan
Publisher: name: arXiv
Year: 2012
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We propose a novel cosmological scenario with the space-time emerging from a pure initial de Sitter stage and subsequently evolving into the radiation, matter and dark energy dominated epochs, thereby avoiding the initial singularity and providing a complete description of the expansion history and a natural solution to the horizon problem. The model is based on a dynamical vacuum energy density which evolves as a power series of the Hubble rate. The transit from the inflation into the standard radiation epoch is universal, giving a clue for a successful description of the graceful exit. Since the resulting late time cosmic history is very close to the concordance LCDM model, the new unified framework embodies a more complete past cosmic evolution than the standard cosmology.
description: Accepted in MNRAS. Extended discussion, references added
Orthogonal multiplet bases in SU(Nc) color space
Creators: name: Keppeler, Stefan
name: Sjodahl, Malin
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: We develop a general recipe for constructing orthogonal bases for the calculation of color structures appearing in QCD for any number of partons and arbitrary Nc. The bases are constructed using hermitian gluon projectors onto irreducible subspaces invariant under SU(Nc). Thus, each basis vector is associated with an irreducible representation of SU(Nc). The resulting multiplet bases are not only orthogonal, but also minimal for finite Nc. As a consequence, for calculations involving many colored particles, the number of basis vectors is reduced significantly compared to standard approaches employing overcomplete bases. We exemplify the method by constructing multiplet bases for all processes involving a total of 6 external colored partons.
description: 50 pages, 2 figures
Großmaßstäbliche, digitale archäologische Kartographie auf der Basis von Luftbildern, geophysikalischen Messungen und einer Datenbank
Creators: name: Scollar, Irwin
name: Aniol, Roland W.
name: Herzog, Irmela
Publisher: name: Bonner Jahrbücher
Year: 2019

description: Bonner Jahrbücher, Bd. 186.1986: Bonner Jahrbücher
TimelyFL: Heterogeneity-aware Asynchronous Federated Learning with Adaptive Partial Training
Creators: name: Zhang, Tuo
name: Gao, Lei
name: Lee, Sunwoo
name: Zhang, Mi
name: Avestimehr, Salman
Publisher: name: arXiv
Year: 2023
Subjects: subject: Machine Learning (cs.LG)
subject: Distributed, Parallel, and Cluster Computing (cs.DC)
subject: FOS: Computer and information sciences

description: In cross-device Federated Learning (FL) environments, scaling synchronous FL methods is challenging as stragglers hinder the training process. Moreover, the availability of each client to join the training is highly variable over time due to system heterogeneities and intermittent connectivity. Recent asynchronous FL methods (e.g., FedBuff) have been proposed to overcome these issues by allowing slower users to continue their work on local training based on stale models and to contribute to aggregation when ready. However, we show empirically that this method can lead to a substantial drop in training accuracy as well as a slower convergence rate. The primary reason is that fast-speed devices contribute to many more rounds of aggregation while others join more intermittently or not at all, and with stale model updates. To overcome this barrier, we propose TimelyFL, a heterogeneity-aware asynchronous FL framework with adaptive partial training. During the training, TimelyFL adjusts the local training workload based on the real-time resource capabilities of each client, aiming to allow more available clients to join in the global update without staleness. We demonstrate the performance benefits of TimelyFL by conducting extensive experiments on various datasets (e.g., CIFAR-10, Google Speech, and Reddit) and models (e.g., ResNet20, VGG11, and ALBERT). In comparison with the state-of-the-art (i.e., FedBuff), our evaluations reveal that TimelyFL improves participation rate by 21.13%, harvests 1.28x - 2.89x more efficiency on convergence rate, and provides a 6.25% increment on test accuracy.
title: Оценка эффективности логистической стратегии на основе интегрального показателя логистической системы предприятия
Creators: name: Лазич, Юлия
name: Семёнова, Дарья
Publisher: name: Новгородский государственный университет имени Ярослава Мудрого (НовГУ)
Year: 2021

description: Задача повышения эффективности логистической стратегии на основе интегрального показателя логистической системы предприятия является одной из наиболее актуальных в логистической экономической науке. Исследователи предлагают новые способы расчета данного показателя, дополняя и модернизируя имеющиеся методики. В статье содержится краткий обзор наиболее известных подходов к формированию интегрального показателя эффективности логистической системы, изменение которого позволяет оценить эффективность применяемой в компании логистической стратегии; предложен авторский способ его расчета, позволяющий упростить имеющиеся методики.
Finite difference schemes on quasi-uniform grids for Bvps on infinite intervals
Creators: name: Fazio, Riccardo
name: Jannelli, Alessandra
Publisher: name: arXiv
Year: 2012
Subjects: subject: Numerical Analysis (math.NA)
subject: FOS: Mathematics
subject: G.1.7; G.1.4
subject: 65L10, 65L12, 34B40

description: The classical numerical treatment of boundary value problems defined on infinite intervals is to replace the boundary conditions at infinity by suitable boundary conditions at a finite point, the so-called truncated boundary. A truncated boundary allowing for a satisfactory accuracy of the numerical solution has to be determined by trial and errors and this seems to be the weakest point of the classical approach. On the other hand, the free boundary approach overcomes the need for a priori definition of the truncated boundary. In fact, in a free boundary formulation the unknown free boundary can be identified with a truncated boundary and being unknown it has to be found as part of the solution. In this paper we consider a different way to overcome the introduction of a truncated boundary, namely finite differences schemes defined on quasi-uniform grids. A quasi-uniform grid allows us to describe the infinite domain by a finite number of intervals. The last node of such grid is placed on infinity so right boundary conditions are taken into account exactly. We apply the proposed approach to the Falkner-Skan model and to a problem of interest in foundation engineering. The obtained numerical results are found in good agreement with those available in literature. Moreover, we provide a simple way to improve the accuracy of the numerical results using Richardson's extrapolation. Finally, we indicate a possible way to extend the proposed approach to boundary value problems defined on the whole real line.
description: 22 pages, 3 figures, 7 tables
Marking Process of Molecules for the Health Sector Using a Hot Cell
Creators: name: Morales, José Alanis
name: Flores, Hector
name: Simón De La Cruz
name: Vázquez, José Carlos
Publisher: name: Zenodo
Year: 2021
Subjects: Construction
equipment
molecules marked
sector health

description: Radioisotopes Production Plant of Nuclear Center of Mexico (ININ) prepares weekly radiopharmaceuticals such as sodium iodohippurate and metaiodobenzylguanidine, these compounds are called labeled molecules. The processes for the preparation of these compounds are carried out individually, that is, a different marking process is applied for each compound, and they are carried out in a glove box. Due to the way these processes operate, they present radiological safety risks, difficulty in manipulating each process because they are carried out manually, that is, the operator of the process manually introduces the radioactive material, non-radioactive chemical compounds and the material of laboratory such as lead shielding disposable syringes, vials containing reagents and other devices, that is, there is no device to replace the operator's hands such as manipulators, pistons or vacuum systems that can automate processes to a certain extent. To improve these drawbacks, this work shows a semi-automated equipment, in which the preparation of the preparation processes of the three compounds can be carried out, that is, in the same equipment the sodium iodohippurate and metaiodobenzylguanidine are obtained, also that the equipment is in a hot cell in order to minimize radiation safety risks. The team will work in a semi-automated way, so that there is a minimum exposure to radiation directly, by the personnel in charge of labeling molecules. The routine industrial production with this equipment begins with the fabrication of 9 marked doses of sodium iodohippurate of 2.73 mCi of iodine-131, each vial comprising 4.5 mL of saline solution, and a product containing the indicated molecules of 0.5 mL with a marked percentage of 95.6%. This study is innovative in that it presents a new design of equipment for identifying molecules, which is comprised of electrical, mechanical, vacuum, and air extraction systems.
A Higgslike Dilaton
Creators: name: Bellazzini, Brando
name: Csáki, Csaba
name: Hubisz, Jay
name: Serra, Javi
name: Terning, John
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We examine the possibility that the recently discovered 125 GeV higgs like resonance actually corresponds to a dilaton: the Goldstone boson of scale invariance spontaneously broken at a scale f. Comparing to LHC data we find that a dilaton can reproduce the observed couplings of the new resonance as long as f ~ v, the weak scale. This corresponds to the dynamical assumption that only operators charged under the electroweak gauge group obtain VEVs. The more difficult task is to keep the mass of the dilaton light compared to the dynamical scale, Lambda ~ 4 pi f, of the theory. In generic, non-supersymmetric theories one would expect the dilaton mass to be similar to Lambda. The mass of the dilaton can only be lowered at the price of some percent level (or worse) tuning and/or additional dynamical assumptions: one needs to suppress the contribution of the condensate to the vacuum energy (which would lead to a large dilaton quartic coupling), and to allow only almost marginal deformations of the CFT.
description: 30 pages, 4 figures; v2: references added, typos fixed, discussions clarified, accepted for publication in EPJC
Biotic interactions outweigh abiotic factors as drivers of bark microbial communities in Central European forests
Creators: name: Dreyling, Lukas
name: Schmitt, Imke
name: Dal Grande, Francesco
Publisher: name: Zenodo
Year: 2023

description: This is the release of the code and data used for the paper "Biotic interactions outweigh abiotic factors as drivers of bark microbial communities in Central European forests" which is under revision at the Journal ISME Communications. This version is pre-acceptance but fully functional.
This release contains some bug-fixes related to quality filtering for the bacterial reads and the subsequent re-ran analysis. It also now incorporates library sizes of the different samples as a controlling factor in our modeling approach.
Electrical transport properties driven by unique bonding configuration in gamma-GeSe
Creators: name: Jang, Jeongsu
name: Kim, Joonho
name: Sung, Dongchul
name: Kim, Jong Hyuk
name: Jung, Joong-Eon
name: Lee, Sol
name: Park, Jinsub
name: Lee, Chaewoon
name: Bae, Heesun
name: Im, Seongil
name: Park, Kibog
name: Choi, Young Jai
name: Hong, Suklyun
name: Kim, Kwanpyo
Publisher: name: arXiv
Year: 2023
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Applied Physics (physics.app-ph)
subject: FOS: Physical sciences

description: Group-IV monochalcogenides have recently shown great potential for their thermoelectric, ferroelectric, and other intriguing properties. The electrical properties of group-IV monochalcogenides exhibit a strong dependence on the chalcogen type. For example, GeTe exhibits high doping concentration, whereas S/Se-based chalcogenides are semiconductors with sizable bandgaps. Here, we investigate the electrical and thermoelectric properties of gamma-GeSe, a recently identified polymorph of GeSe. gamma-GeSe exhibits high electrical conductivity (~106 S/m) and a relatively low Seebeck coefficient (9.4 uV/K at room temperature) owing to its high p-doping level (5x1021 cm-3), which is in stark contrast to other known GeSe polymorphs. Elemental analysis and first-principles calculations confirm that the abundant formation of Ge vacancies leads to the high p-doping concentration. The magnetoresistance measurements also reveal weak-antilocalization because of spin-orbit coupling in the crystal. Our results demonstrate that gamma-GeSe is a unique polymorph in which the modified local bonding configuration leads to substantially different physical properties.
Hermann Müller-Karpe, Handbuch der Vorgeschichte IV. Bronzezeit
Creators: name: Jacob-Friesen, Gernot
Publisher: name: Bonner Jahrbücher
Year: 2019

description: Rezension zu: Hermann Müller-Karpe, Handbuch der Vorgeschichte IV. Bronzezeit. Drei Teilbände (Text; Text, Regesten u. Register; Tafeln). Verlag C. H. Beck, München 1980. 966 Seiten, drei synchronistische Tabellen, 10 Fundortkarten, 602 Tafeln
description: Bonner Jahrbücher, Bd. 186.1986: Bonner Jahrbücher