cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
A Multi-Wavelength Analysis of Dust and Gas in the SR 24S Transition Disk
Creators: name: Pinilla, P.
name: Pérez, L. M.
name: Andrews, S.
name: van der Marel, N.
name: van Dishoeck, E. F.
name: Ataiee, S.
name: Benisty, M.
name: Birnstiel, T.
name: Juhász, A.
name: Natta, A.
name: Ricci, L.
name: Testi, L.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We present new Atacama Large Millimeter/sub-millimeter Array (ALMA) 1.3 mm continuum observations of the SR 24S transition disk with an angular resolution $\lesssim0.18"$ (12 au radius). We perform a multi-wavelength investigation by combining new data with previous ALMA data at 0.45 mm. The visibilities and images of the continuum emission at the two wavelengths are well characterized by a ring-like emission. Visibility modeling finds that the ring-like emission is narrower at longer wavelengths, in good agreement with models of dust trapping in pressure bumps, although there are complex residuals that suggest potentially asymmetric structures. The 0.45 mm emission has a shallower profile inside the central cavity than the 1.3 mm emission. In addition, we find that the $^{13}$CO and C$^{18}$O (J=2-1) emission peaks at the center of the continuum cavity. We do not detect either continuum or gas emission from the northern companion to this system (SR 24N), which is itself a binary system. The upper limit for the dust disk mass of SR 24N is $\lesssim 0.12\,M_{\bigoplus}$, which gives a disk mass ratio in dust between the two components of $M_{\mathrm{dust, SR\,24S}}/M_{\mathrm{dust, SR\,24N}}\gtrsim840$. The current ALMA observations may imply that either planets have already formed in the SR 24N disk or that dust growth to mm-sizes is inhibited there and that only warm gas, as seen by ro-vibrational CO emission inside the truncation radii of the binary, is present.
description: Accepted for publication in ApJ
Research Metrics: Does it matter in the African scholarship and collaboration?
Creators: name: Kavulya, Joseph
Publisher: name: My University
Year: 2017

description: Review of literature reveals that Africa’s contribution to global knowledge and innovations is still rated at low. Scholarly communication in the region is bedeviled by among others, poor discovery and access to local scientific information, low publishing levels, and low funding and collaboration in research enterprise. Scientists in the region are at pains on to remedy situation. One development that is steadily gaining popularity globally is use research metrics to evaluate research productivity, visibility, collaboration and impact at individual, institutional, national and regional levels. The overall objective of this paper is to examine the role of metrics in promoting collaboration and quality in research, publications and innovation in the African region. More Specifically the paper will evaluate first, the concept of metrics in research and publication and the rationale behind the existing research metric key tools and services. Secondly, it will examine the potential application of metrics in both higher education and research institutions as a strategy of promoting and evaluating productivity and promoting intra-Africa collaboration among scholars and institutions in the region. Thirdly, it will review areas of collaboration in the improvement of research in the African region. Fourthly it will examine the key obstacles to the use of metrics and measures required to create conducive organizational ecosystem for fruitful use of research metrics. Finally the paper will propose a unique tool that be used to identify research publications across Africa and apply conventional metrics to them
Dynamical quantum phase transitions
Creators: name: Zvyagin, A. A.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: During recent years the interest to dynamics of quantum systems has grown considerably. Quantum many body systems out of equilibrium often manifest behavior, different from the one predicted by standard statistical mechanics and thermodynamics in equilibrium. Since the dynamics of a many body quantum system typically involve many excited eigenstates, with a non-thermal distribution, the time evolution of such a system provides an unique way for investigation of non-equilibrium quantum statistical mechanics. Last decade such new subjects like quantum quenches, thermalization, pre-thermalization, equilibration, generalized Gibbs ensemble, etc. are among the most attractive topics of investigation in modern quantum physics. One of the most interesting themes in the study of dynamics of quantum many-body systems out of equilibrium is connected with the recently proposed important concept of dynamical quantum phase transitions. During the last few years a great progress has been achieved in studying of those singularities in the time dependence of characteristics of quantum mechanical systems, in particular, in understanding how the quantum critical points of equilibrium thermodynamics affect their dynamical properties. Dynamical quantum phase transitions reveal universality, scaling, connection to the topology, and many other interesting features. Here we review the recent achievements of this quickly developing part of low temperature quantum physics. The study of dynamical quantum phase transitions is especially important in context of their connection to the problem of the modern theory of quantum information, where namely non-equilibrium dynamics of many-body quantum system plays the major role.
description: It is the review article
First determination of s-process element abundances in pre-main sequence clusters: Y, Zr, La, and Ce in IC 2391, the Argus association and IC 2602
Creators: name: D'Orazi, Valentina
name: De Silva, Gayandhi
name: Melo, Claudio
Publisher: name: arXiv
Year: 2016
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Several high-resolution spectroscopic studies have provided compelling observational evidence that open clusters display a decreasing trend of their barium abundances as a function of the cluster's age. Young clusters (ages~200 Myr) exhibit significant enhancement in the [Ba/Fe] ratios, at variance with solar-age clusters where the Ba content has been found to be [Ba/Fe]~0 dex. Different viable solutions have been suggested in the literature, nevertheless, a conclusive interpretation of such a peculiar trend has not been found. Interestingly, it is debated whether the other species produced with Ba via s-process reactions do follow the same trend with age. Pre-main sequence clusters (~10-50 Myr) show the most extreme behaviour in this respect: their [Ba/Fe] ratios can reach 0.65 dex, which higher than the solar value by a factor of four. Crucially, there are no investigations of the other s-process species for these young stellar populations. In this paper we present, the first determination of Y, Zr, La, and Ce in clusters IC 2391, IC 2602 and the Argus association. The main objective of our work is to ascertain whether these elements reveal the same enhancement as Ba. Our results indicate that, at variance with Ba, all the other s-process species exhibit a solar scaled pattern: these clusters confirm a similar trend discovered in the slightly older local associations (e.g., AB Doradus, Carina Near), where only Ba exhibit enhanced value with all other s process species being solar. We have discussed several possible explanations such as e.g., chromospheric effects, departures from the LTE approximation, or the activation of a different nucleosynthesis chain. We cannot currently provide the definite answer to this question and future investigations from theoretical and observational perspectives are sorely needed.
description: 7 pages, 3 figures, abstract shortened. Accepted for publication in Astronomy and Astrophysics
Developing applications for biochar in a circular economy : a review of addition to biodegradable polymers
Creators: name: Krähenbühl, Nikita
Publisher: name: ZHAW Zürcher Hochschule für Angewandte Wissenschaften
Year: 2022
Subjects: Systematic review
Biochar
630: Landwirtschaft

description: Increasing the application fields for biochar presents an opportunity to replace fossil-fuel derived products with carbon-neutral biomass. However, to do so successfully the biomass, process requirements, product-use and end-of-life must be appropriately researched and evaluated. In this review biochar applications beyond soil were conceptually mapped and the addition of biochar to produce composites was identified as a niche theme with biodegradable plastics in particular showing promising potential for further development in the context of a circular economy. A meta-analysis of 20 bio-composite characterisation studies found that biochar up to 20 wt % produced from various feed-stocks and under differing pyrolysis conditions can lead to viable, or even biocomposites with improved properties for a number of bio-polymers. A set of recommendations for future biochar-PLA composite characterisations was suggested based on a qualitative evaluation of the publications under review. Due to the foundational nature of the research further biochar characterisation, biodegradation studies and sequential applications for biocomposites were identified as key future topics to evaluate if biochar-biocomposites are a promising application in a low-carbon circular economy.
Low Temperature Surface Formation of NH3 and HNCO: hydrogenation of nitrogen atoms in CO-rich interstellar ice analogues
Creators: name: Fedoseev, Gleb
name: Ioppolo, Sergio
name: Zhao, Dongfeng
name: Lamberts, Thanja
name: Linnartz, Harold
Publisher: name: arXiv
Year: 2017
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Solid state astrochemical reaction pathways have the potential to link the formation of small nitrogen-bearing species, like NH3 and HNCO, and prebiotic molecules, specifically amino acids. To date, the chemical origin of such small nitrogen containing species is still not well understood, despite the fact that ammonia is an abundant constituent of interstellar ices toward young stellar objects and quiescent molecular clouds. This is mainly because of the lack of dedicated laboratory studies. The aim of the present work is to experimentally investigate the formation routes of NH3 and HNCO through non-energetic surface reactions in interstellar ice analogues under fully controlled laboratory conditions and at astrochemically relevant temperatures. This study focuses on the formation of NH3 and HNCO in CO-rich (non-polar) interstellar ices that simulate the CO freeze-out stage in dark interstellar cloud regions, well before thermal and energetic processing start to become relevant. We demonstrate and discuss the surface formation of solid HNCO through the interaction of CO molecules with NH radicals - one of the intermediates in the formation of solid NH3 upon sequential hydrogenation of N atoms. The importance of HNCO for astrobiology is discussed.
Neli talve Brüsselis: Euroopa Nõukogu eesistumisest suure ühisvõlani ja ühest stabiliseerimisest teiseni
Creators: name: Potisepp, Priit
Publisher: name: Estonian Discussions on Economic Policy
Year: 2022

description: The author of this article worked as a diplomat in Brussels from 2017 to 2020 and was directly involved in the change the economic and financial policies of the European Union, which was largely driven by the global financial crisis of 2008-2009 and the euro area debt crisis that followed in the first half of the second decade. The period of the Estonian Council Presidency also remained in this period of economic and financial diplomacy. In the middle of the decade, common financial instruments were created, which burden on the Community budget was expected to be and has been rather limited (facilitating access to capital through the guarantees of the European Union). Since 2017 (after the French presidential elections), the subject of a common euro area budget appeared more visibly, yet, a decisive breakthrough in policies until the global Covid-19 pandemic broke the taboos. It shall be noted that an idea of redistribution of debt (a so-called transfer union) has been a sensitive topic for several members of the Union. In the summer of 2020, the Member States agreed on a joint loan, majority of which shall be disbursed to the Member States in a form of non-refundable support, the repayment of the Community loan being not linked to the share of the support. With this, the Union is being redistributing mutual debt.
description: Estonian Discussions on Economic Policy, Vol. 30 No. 1-2 (2022)
Research and evaluation of perceptions of inclusive economic growth in Georgia
Creators: name: Kraveishvili, Giorgi
name: Gogorishvili, Irina
Publisher: name: Estonian Discussions on Economic Policy
Year: 2022

description: The purpose of this work is to analyze and evaluate the perception of the inclusiveness of economic growth mainly for the young part of the Georgian population. Significant problems in Georgia today are poverty, inequality and low living standards. These are the factors whose elimination is the goal of inclusive economic growth. As a result, we want to evaluate Georgia's inclusive economic growth in terms of the perception of the population. The work uses the methodology proposed by the Asian Development Bank and the World Economic Forum. The study uses quantitative methods of analysis. The results obtained were processed using the SPSS computer program. The ongoing research revealed how the population perceives important factors of inclusive economic growth. The identification of relationships between factor and outcome variables made it possible to assess which factors determined a higher perception of the inclusiveness of economic growth.
description: Estonian Discussions on Economic Policy, Vol. 30 No. 1-2 (2022)
A Search for Lost Planets in the Kepler Multi-planet Systems and the Discovery of the Long-period, Neptune-sized Exoplanet Kepler-150 f
Creators: name: Schmitt, Joseph R.
name: Jenkins, Jon M.
name: Fischer, Debra A.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: The vast majority of the 4700 confirmed planets and planet candidates discovered by the Kepler mission were first found by the Kepler pipeline. In the pipeline, after a transit signal is found, all data points associated with those transits are removed, creating a "Swiss cheese"-like light curve full of holes, which is then used for subsequent transit searches. These holes could render an additional planet undetectable (or "lost"). We examine a sample of 114 stars with $3+$ confirmed planets to evaluate the effect of this "Swiss cheesing". A simulation determines that the probability that a transiting planet is lost due to the transit masking is low, but non-negligible, reaching a plateau at $\sim3.3\%$ lost in the period range of $P=400-500$ days. We then model all planet transits and subtract out the transit signals for each star, restoring the in-transit data points, and use the Kepler pipeline to search the transit-subtracted (i.e., transit-cleaned) light curves. However, the pipeline did not discover any credible new transit signals. This demonstrates the validity and robustness of the Kepler pipeline's choice to use transit masking over transit subtraction. However, a follow-up visual search through all the transit-subtracted data, which allows for easier visual identification of new transits, revealed the existence of a new, Neptune-sized exoplanet (Kepler-150 f) and a potential single transit of a likely false positive (Kepler-208). Kepler-150 f ($P=637.2$ days, $R_{\rm{P}}=3.64^{+0.52}_{-0.39}$ R$_{\oplus}$) is confirmed with $>99.998\%$ confidence using a combination of the planet multiplicity argument, a false positive probability analysis, and a transit duration analysis.
description: 11 pages, 5 figures, 2 tables. Accepted into AJ
Service exporters in ICT-industries: measuring digital service trade of Estonia
Creators: name: Kerner, Riina
Publisher: name: Estonian Discussions on Economic Policy
Year: 2022

description: In the ecosystem of digital and green transition service exporters play a vital role, particularly in exporting highly valued information and communication technology (ICT) services. In 2020, after the COVID-19 outbreak, Estonia’s service exports declined by 20% while ICT service exports increased by 12% compared to 2019. This shows that Estonian ICT firms adapted quickly to seize the opportunities brought by the pandemic to retain their competitiveness. Therefore, the aim of this paper is to investigate the characteristics (size, ownership and export intensity) of the Estonian firms. The study also contributes to the EU´s objective to promote greater transparency on service traders (European Commission, 2021), as we provide new information for policy-makers and support the Estonian and European digital agendas (Estonia, 2018; European Commission, 2020, 2021). Our findings show that among services exporters the firms that export ICT services are more export-intensive and smaller and have more foreign ownership than non-ICT firms.
description: Estonian Discussions on Economic Policy, Vol. 30 No. 1-2 (2022)
Constructions and classifications of projective Poisson varieties
Creators: name: Pym, Brent
Publisher: name: arXiv
Year: 2017
Subjects: subject: Algebraic Geometry (math.AG)
subject: Mathematical Physics (math-ph)
subject: Symplectic Geometry (math.SG)
subject: FOS: Mathematics
subject: FOS: Physical sciences
subject: 14J45, 14N05, 17B63, 53D17

description: This paper is intended both an introduction to the algebraic geometry of holomorphic Poisson brackets, and as a survey of results on the classification of projective Poisson manifolds that have been obtained in the past twenty years. It is based on the lecture series delivered by the author at the Poisson 2016 Summer School in Geneva. The paper begins with a detailed treatment of Poisson surfaces, including adjunction, ruled surfaces and blowups, and leading to a statement of the full birational classification. We then describe several constructions of Poisson threefolds, outlining the classification in the regular case, and the case of rank-one Fano threefolds (such as projective space). Following a brief introduction to the notion of Poisson subspaces, we discuss Bondal's conjecture on the dimensions of degeneracy loci on Poisson Fano manifolds. We close with a discussion of log symplectic manifolds with simple normal crossings degeneracy divisor, including a new proof of the classification in the case of rank-one Fano manifolds.
description: 57 pages, 7 figures
The readiness of micro-entrepreneurs for changes in accountancy, in the example of Estonia
Creators: name: Güldenkoh, Maret
name: Silberg, Uno
Publisher: name: Estonian Discussions on Economic Policy
Year: 2022

description: In the last five years, accounting entities in Estonia have had to adopt a number of changes resulting from various EU directives, and soon they will have to start taking into account the changes arising from the vision of the real-time economy. Quite a few accounting entities have not yet adopted even the current requirements (for example, machine-processed invoices), and many accounting entities do not comply with the reporting obligation properly (fail to submit the annual report or fail to submit the report on time). The article reflects on the future directions of the accounting field and the fulfillment of the accounting obligations of Estonian micro-entrepreneurs, and the readiness for changes resulting from the vision of the real-time economy. A micro-entrepreneur in Estonia is a private limited company whose annual turnover does not exceed 50,000 euros, and the balance sheet volume does not exceed 175,000 euros; in addition, its liabilities may not exceed the equity capital, and such a limited company must be founded by one natural person who is also a member of the board of this private limited company. Micro-entrepreneurs have a simplified reporting obligation to the state: their annual report only consists of a balance sheet and a profit and loss account. Starting in 2018, micro-entrepreneurs are allowed to submit their annual report in a simplified form. The conducted research revealed that it is mainly private limited companies, including micro-entrepreneurs, who fail to submit annual reports. Among the micro-entrepreneurs who have not submitted annual reports, the majority have been operating for less than five years and are not registered as VAT payers. Half of the micro-entrepreneurs do not consider proper monthly accounting to be important, and only half are ready for the changes resulting from the vision of the real-time economy, and the submission of a simplified annual report has not led to a cognitive reduction of the administrative burden.
description: Estonian Discussions on Economic Policy, Vol. 30 No. 1-2 (2022)
Synthesis of Novel β-amino Ketones with Computational and Antimicrobial Studies
Creators: name: Rahman, Md. Kabidur
name: Badal, Md. Mizanur Rahman
name: Maniruzzaman, Md
name: Abu Yousuf, Mohammad
Publisher: name: figshare
Year: 2024
Subjects: classificationCode: 340503
subject: Organic chemical synthesis

description:
This file contains 13C NMR and 1H NMR analysis data, FID files for unique organic compounds. Manuscript title "Synthesis of Novel β-amino Ketones with Computational and Antimicrobial Studies"
1-(2-hydroxyphenyl)-3-(4-methoxyphenyl)-3-(phenylamino)propan-1-one, 5a and3-(4-chlorophenyl)-1-(2-hydroxyphenyl)-3-(phenylamino)propan-1-one, 5b
Impact of Lattice QCD on CKM Phenomenology
Creators: name: Blanke, Monika
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Precise lattice QCD results for hadronic matrix elements, decay constants and form factors play a crucial role in the determination of CKM matrix elements and in the identification of possible new physics contributions to flavour violating observables. This article reviews the implications of recent lattice QCD results on the phenomenology of flavour and CP violating meson decays, and highlights some future directions for lattice QCD calculations which would have a major impact on flavour phenomenology.
description: 17 pages, 7 figures. Plenary talk given at The 34th International Symposium on Lattice Field Theory (Lattice 2016), Southampton, July 2016
Quantum correlations at infinite temperature: the dynamical Nagaoka effect
Creators: name: Kanasz-Nagy, Marton
name: Lovas, Izabella
name: Grusdt, Fabian
name: Greif, Daniel
name: Greiner, Markus
name: Demler, Eugene A.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: Computational Physics (physics.comp-ph)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Do quantum correlations play a role in high temperature dynamics of many-body systems? A common expectation is that thermal fluctuations lead to fast decoherence and make dynamics classical. In this paper, we provide a striking example of a single particle created in a featureless, infinite temperature spin bath which not only exhibits non-classical dynamics but also induces strong long-lived correlations between the surrounding spins. We study the non-equilibrium dynamics of a hole created in a fermionic or bosonic Mott insulator in the atomic limit, which corresponds to a degenerate spin system. In the absence of interactions, the spin correlations arise purely from quantum interference, and the correlations are both antiferromagnetic and ferromagnetic, in striking contrast to the equilibrium Nagaoka effect. These results are relevant for several condensed matter spin systems, and should be observable using state of the art bosonic or fermionic quantum gas microscopes.
description: 10 pages, 5 figures; Supplementary Material (4 pages, 5 figures)
Elementary equivalence vs commensurability for hyperbolic groups
Creators: name: Guirardel, Vincent
name: Levitt, Gilbert
name: Sklinos, Rizos
Publisher: name: arXiv
Year: 2017
Subjects: subject: Group Theory (math.GR)
subject: Logic (math.LO)
subject: FOS: Mathematics
subject: 20F65, 20F70, 20F67,

description: We study to what extent torsion-free (Gromov)-hyperbolic groups are elementarily equivalent to their finite index subgroups. In particular, we prove that a hyperbolic limit group either is a free product of cyclic groups and surface groups, or admits infinitely many subgroups of finite index which are pairwise non elementarily equivalent.
description: 19 pages
Reorganizing for Efficiency: Framework for National Education and Research Stakeholders Collaboration
Creators: name: Mushi, Margreth
Publisher: name: My University
Year: 2017

description: National Research and Education Networks (NRENs) are involved with diverse activities ranging from core connectivity to simply brokerage. Some of the services are so indispensable to research and education institutions that they must be available in the institutions before NRENs are capable of providing them. While TERNET is restructuring itself for relevance and for efficient service delivery to its members, we have been observing various organizations with overlapping services offers to members, the situation which has resulted in inefficiency and wastage of precious resources in the country as well as confusion and sometimes frustration to consumers. In order to ensure systematic and resource efficient service provision to our consumers, we believe that a framework for collaboration among all stakeholders and service providers is necessary. In this paper, we propose the framework by first reviewing services offered by the stakeholders and other service providers to identify the underlying overlapping areas. The framework will allow these stakeholders to harmonize their efforts towards a common goal of providing well-thought-of services to research and education institutions in Tanzania.
Simplified entrepreneurial activity in Estonia
Creators: name: Güldenkoh, Maret
Publisher: name: Estonian Discussions on Economic Policy
Year: 2022

description: The article focuses on the entrepreneurial activities of a natural person. The development of the entrepreneurial activities of individuals in East-European countries and Estonia since the re-establishment of independence will be explained. Similarly, the tax compliance of natural persons as taxpayers and the development of their tax behaviour as well as the possibilities of declaring an individual’s business income in Estonia will be discussed. An analysis is provided of the implementation of the Simplified Business Income Taxation Act in 2019-2020 and the profitability of the entrepreneurial activities of sole proprietors in the same period. The discussion will also explore the attitudes of individuals opting for micro-entrepreneurship. The entrepreneurial activities of individuals in 2019-2020 in terms of their number, gender and profitability will also be analysed. The results of the analysis confirmed the theoretical basis and revealed that the number of people active in micro-entrepreneurship has increased and will definitely increase also in the future. The reason lies in reduced bureaucracy allowing natural persons to be tax compliant without additional responsibilities
description: Estonian Discussions on Economic Policy, Vol. 30 No. 1-2 (2022)
Synthesis of Novel β-Amino Ketones with Computational and Microbiological Properties
Creators: name: Rahman, Md. Kabidur
name: Badal, Md. Mizanur Rahman
name: Maniruzzaman, Md
name: Abu Yousuf, Mohammad
Publisher: name: figshare
Year: 2024
Subjects: classificationCode: 340503
subject: Organic chemical synthesis

description:
This file contains 13C NMR and 1H NMR analysis data, FID files for unique organic compounds. Manuscript title "Synthesis of Novel β-Amino Ketones with Computational and Microbiological Properties"
1-(2-hydroxyphenyl)-3-(4-methoxyphenyl)-3-(phenylamino)propan-1-one, 5a and 3-(4-chlorophenyl)-1-(2-hydroxyphenyl)-3-(phenylamino)propan-1-one, 5b
Willingness to pay for urban ecosystem services as input for statistics: a case of Estonia
Creators: name: Ehrlich, Üllas
Publisher: name: Estonian Discussions on Economic Policy
Year: 2022

description: Finding a monetary equivalent for non-market ecosystem services is precondition to develop a worldwide standard for statistics on ecosystem services. The objectiv of this study is to find out the monetary equivalent of the value of Estonian urban ecosystem services and to determine the dependence of people's willingness to pay on their sociometric indicators.. Using the contingent valuation method, the willingness to pay (WTP) of the Estonian adult population for the maintenance and management of Estonian urban ecosystems has been identified. The total annual WTP is about 17 million euros. Using regression analysis, it was determined that the amount of WTP is positively related to education level, income and gender (women pay more), but not related to age of respondents. In order to divide the total WTP among all the services of all the ecosystems studied, the respondents were asked to rank the urban ecosystems and the services they provide according to their subjective preference. The highest rank among ecosystems received large parks and among ecosystem services urban air purification. According to the results obtained, a matrix was compiled in which all services of the studied all ecosystems are assigned a monetary equivalent, which can be used as an input in the statistics on ecosystem services.
description: Estonian Discussions on Economic Policy, Vol. 30 No. 1-2 (2022)
Fermions in worldline holography
Creators: name: Dietrich, Dennis D.
name: Koenigstein, Adrian
Publisher: name: arXiv
Year: 2017
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We analyse the worldline holographic framework for fermions. Worldline holography is based on the observation that in the worldline approach to quantum field theory, sources of a quantum field theory over Mink$_4$ naturally form a field theory over AdS$_5$ to all orders in the elementary fields and in the sources. Schwinger's proper time of the worldline formalism automatically appears with the physical four spacetime dimensions in an AdS$_5$ geometry. The worldline holographic effective action in general and the proper-time profiles of the sources in particular solve a renormalisation group equation. By taking into account sources up to spin one, we reconstruct seminal holographic models. Considering spin two confirms AdS$_5$ as consistent background.
description: v2: no changes to manuscript, fixed one typo in the metadata
Governance model for Educational Roaming (eduroam) in African research institutions
Creators: name: Ssentego, Llyod
Publisher: name: My University
Year: 2017

description: Educational Roaming, “eduroam” is a globally accessible, secure wireless service for members of participating universities and research institutions. eduroam is a widely used example of a technology that uses trust and identity federations to share essential tools for collaboration and research by enabling visiting partners to use the Internet at trusting institutions. Identity is a key service provided by eduroam service, and use of the service is limited to active users from collaborating institutions and potentially collaborating institutions. As the popularity of eduroam increases, this freedom is in jeopardy as ransomware worms and network saturation potentially impinge upon providing consistent service levels at African member institutions. In addition, the high cost of an adequate Internet gateway in Africa, creates a supply side constraint, leading to de facto restrictions that other continental partners may not have to consider. The effects of this tension can cause degradation in services for the roaming user and could also spill over into the existing pool of network resources offered by the service provider. Some member institutions may address these problems by implementing overly restrictive policies, creating a very inconsistent experience when using eduroam between member institutions. These challenges may lead member institutions to discontinue support for eduroam or for prospective members to chose not to adopt eduroam. We used quantitative and qualitative methods to establish a baseline of Internet priorities. We performed deep packet inspection to reveal common categories of Internet resources, applications, and specific Internet hosts that are used at research institutions under our administration. We assigned a bandwidth cost of applications and used surveys to gauge relative importance of Internet resources, applications and hosts. After one year of service at NIAID African research institutions, this body of work produces a proposed convention for eduroam member institutions that introduces a behavioral policy for eduroam users and a scalable, platform independent configuration policy for member institutions.
Spring comes to the Dabie Mountains (春到大别山)
Creators: name: Yang Mei 杨梅
Publisher: name: University of Victoria Libraries
Year: 2022
Subjects: Landscape
Modernity
Dabie Mountains

description: Landscape of the Dabie Mountain range in Anhui, Hubei and Henan, with indications of modern housing and hydro-electrical industry. Price: 17 fen
The Higgs Vacuum Uplifted: Revisiting the Electroweak Phase Transition with a Second Higgs Doublet
Creators: name: Dorsch, G. C.
name: Huber, S. J.
name: Mimasu, K.
name: No, J. M.
Publisher: name: arXiv
Year: 2017
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The existence of a second Higgs doublet in Nature could lead to a cosmological first order electroweak phase transition and explain the origin of the matter-antimatter asymmetry in the Universe. We explore the parameter space of such a two-Higgs-doublet-model and show that a first order electroweak phase transition strongly correlates with a significant uplifting of the Higgs vacuum w.r.t. its Standard Model value. We then obtain the spectrum and properties of the new scalars $H_0$, $A_0$ and $H^{\pm}$ that signal such a phase transition, showing that the decay $A_0 \rightarrow H_0 Z$ at the LHC and a sizable deviation in the Higgs self-coupling $λ_{hhh}$ from its SM value are sensitive indicators of a strongly first order electroweak phase transition in the 2HDM.
Utilizing Virtual Learning and a Virtual GIS Computer Laboratory in Spatial Sciences Learning for the Expanded Open Distance Education at Mzuzu University
Creators: name: Chilonga, Donnex
Publisher: name: My University
Year: 2017

description: This article describes the application of an emerging virtual learning environment for the teaching of GIS and spatial sciences to open and distance learning (ODL) graduate as well as undergraduate students of Mzuzu University. Focusing mainly on the innovative hybrid architecture of the virtual GIS computer laboratory, benefits and constraints of this mixed architecture are discussed. To develop this virtual learning environment, consideration was made to use a combination of synchronous and asynchronous communication tools so as to enable interaction between student and facilitator, student and computer, and student and student; to develop a liberated online learning environment where students will access a group of passive and active multi-media tools; and to allow students access a mixed Web-facilitated and hybrid architecture that arouses their cognitive geographic skills and affords hands-on experience in GIS use. This innovative architecture is simple, affordable, and versatile; and provides a flexible and collaborative virtual learning environment for distance education instruction.
Constraints on Quenching of $z\lesssim2$ Massive Galaxies from the Evolution of the average Sizes of Star-Forming and Quenched Populations in COSMOS
Creators: name: Faisst, A. L.
name: Carollo, C. M.
name: Capak, P. L.
name: Tacchella, S.
name: Renzini, A.
name: Ilbert, O.
name: McCracken, H. J.
name: Scoville, N. Z.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We use $>$9400 $\log(m/M_{\odot})>10$ quiescent and star-forming galaxies at $z\lesssim2$ in COSMOS/UltraVISTA to study the average size evolution of these systems, with focus on the rare, ultra-massive population at $\log(m/M_{\odot})>11.4$. The large 2-square degree survey area delivers a sample of $\sim400$ such ultra-massive systems. Accurate sizes are derived using a calibration based on high-resolution images from the Hubble Space Telescope. We find that, at these very high masses, the size evolution of star-forming and quiescent galaxies is almost indistinguishable in terms of normalization and power-law slope. We use this result to investigate possible pathways of quenching massive $m>M^*$ galaxies at $z<2$. We consistently model the size evolution of quiescent galaxies from the star-forming population by assuming different simple models for the suppression of star-formation. These models include an instantaneous and delayed quenching without altering the structure of galaxies and a central starburst followed by compaction. We find that instantaneous quenching reproduces well the observed mass-size relation of massive galaxies at $z>1$. Our starburst$+$compaction model followed by individual growth of the galaxies by minor mergers is preferred over other models without structural change for $\log(m/M_{\odot})>11.0$ galaxies at $z>0.5$. None of our models is able to meet the observations at $m>M^*$ and $z<1$ with out significant contribution of post-quenching growth of individual galaxies via mergers. We conclude that quenching is a fast process in galaxies with $ m \ge 10^{11} M_\odot$, and that major mergers likely play a major role in the final steps of their evolution.
description: 20 pages, 9 figures, 1 table, accepted for publication in ApJ
THINGS POLITICAL: A STUDY OF THE OBJECT OF POLITICS
Creators: name: POZZONI, GIANLUCA
Publisher: name: Universit� degli Studi di Milano
Year: 2018

description: This work is an inquiry into the nature of politics. I will argue that the idea of a "political sphere" emerged primarily in reference to the subject matter of political science, and therefore its nature is that of a scientific object (chapter 1). Building on recent and less recent debates among social science methodologists and philosophers of science, I will defend a realist approach to the explanation of political phenomena (chapter 2). I will then proceed to work out the implications of this realist approach concerning the nature of its object(s) of study (chapter 3). My conclusion is that political phenomena consist solely of the effects of the causal properties of individual entities, and that, strictly speaking, there is no such thing as a "political sphere" at the ontological level. Such a scientific object must instead be seen as the product of the classification of political phenomena into kinds with increasing degree of generality, at the top of which lies the class of all political phenomena ? i.e. the political domain. In line with the realist approach I defend, I contend that such classifications are based on stipulations about the similarities between individual phenomena rather than on general features that such phenomena actually share (chapter 4). Finally, I will conclude that despite their relative arbitrariness, such classifications constitute representational models whose validity can be tested on the basis of their explanatory power (chapter 5).
Supplementary material for Cattaneo et al. 2023. Effect of supplementing live Saccharomyces cerevisiae yeast on performances, rumen function, and metabolism during the transition period in Holstein dairy cow
Creators: name: Cattaneo, Luca
name: Lopreiato, Vincenzo
name: Piccioli-Cappelli, Fiorenzo
name: Trevisi, Erminio
name: Minuti, Andrea
Publisher: name: figshare
Year: 2022
Subjects: Animal nutrition
Animal production not elsewhere classified

description: Supplementary table reporting methods for blood analyses
MPEC 2023-R94 : DAILY ORBIT UPDATE (2023 September 10)
Creators: name: Minor Planet Center Staff
Publisher: name: The Minor Planet Center
Year: 2023
Subjects: subject: Small Solar System bodies
valueUri: http://astrothesaurus.org/uat/1469

description: The Minor Planet Electronic Circulars contain information on unusual minor planets, routine data on comets and natural satellites, and occasional editorial announcements.  They are published on behalf of Division F of the International Astronomical Union by the Minor Planet Center, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
Quantum mechanical path integrals in curved spaces and the type-A trace anomaly
Creators: name: Bastianelli, Fiorenzo
name: Corradini, Olindo
name: Vassura, Edoardo
Publisher: name: arXiv
Year: 2017
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Path integrals for particles in curved spaces can be used to compute trace anomalies in quantum field theories, and more generally to study properties of quantum fields coupled to gravity in first quantization. While their construction in arbitrary coordinates is well understood, and known to require the use of a regularization scheme, in this article we take up an old proposal of constructing the path integral by using Riemann normal coordinates. The method assumes that curvature effects are taken care of by a scalar effective potential, so that the particle lagrangian is reduced to that of a linear sigma model interacting with the effective potential. After fixing the correct effective potential, we test the construction on spaces of maximal symmetry and use it to compute heat kernel coefficients and type-A trace anomalies for a scalar field in arbitrary dimensions up to d=12. The results agree with expected ones, which are reproduced with great efficiency and extended to higher orders. We prove explicitly the validity of the simplified path integral on maximally symmetric spaces. This simplified path integral might be of further use in worldline applications, though its application on spaces of arbitrary geometry remains unclear.
description: 21 pages, added proof of a conjecture in appendix A
ОСНОВНЫЕ ПРИНЦИПЫ ПРЕПОДАВАНИЯ ПИЩЕВОЙ ХИМИИ
Creators: name: Генжемуратова, Г.П.
name: Бекимбетова, Б.Б.
name: Еламанов, Н.Н.
Publisher: name: Zenodo
Year: 2024

description: Цель статьи заключается в изучении основных принципов преподавания пищевой химии, включая связь теории с практикой, использование интерактивных методов обучения, современных технологий, а также изучение актуальных проблем пищевой промышленности. Также в статье планируется обсуждение организации учебного процесса, включая формирование компетентностей у студентов, развитие практических навыков и участие студентов в исследовательских проектах, а также применение полученных знаний в практической деятельности, включая подготовку карьеры в пищевой промышленности и сотрудничество с предприятиями пищевой отрасли.
Open Access, Open Science, Open Data: Who will benefit? A user profile
Creators: name: Gfrerer, Margareth
Publisher: name: My University
Year: 2017

description: The scientific community aspires about unlimited and open access to knowledge and information. Just a click and researchers enter the Nirvana of databases, libraries and communication platforms around the globe. Thanks to governments’ efforts in developing as well as in developed countries National Research and Education Networks (NREN) have been established and provide the technological infrastructure. Government and research sponsors around the world have agreed that research data bases and their deriving results should be – in most cases - open and accessible for everyone. In a digitized research environment, research budgets turned back as side topics. A dream came through - in form of a Tsunami. Many researchers around the globe might be overwhelmed and surprised about the fact and the timing and are not prepared to plunge into the digital world of libraries, laboratories and research collaborations. This research will explore the pre-requisites a researcher has to have in order to participate in and benefit from Open Access, Open Science, Open Data (OASD). The focus is on the digital competences of researchers to tackle the challenges they face in the digital research world. This is exactly the position most researchers from developed and developing countries are taking on. This research poses the question: What kind of digital competences the users of OASD have to have, in order to take advantage of the possibilities offered? The EU puts high priority in bringing digital competences to citizens, consumers, educators, students etc in order to succeed with its efforts to create the Digital Single Market and bringing the European Open Science Cloud alive. Therefore, this research sees the European efforts as benchmark, to give orientation what developing countries could do to become active participants in the OASD. This paper is structured in a brief introduction to the OASD and will explore the definitions of digital literacy, information literacy and media literacy before presenting the European digital competence framework with its competence areas. In a next step, it will analyse the criteria of a potential OASD user to satisfy the curiosity as a “data archaeologist”. Data mining and digging are the key activities to find facts for further investigations. EU digital literacy understanding is built on a hierarchy of competences and sub-competences (digital competence framework), starting from the basic level (foundation) of digital literacy up to an intermediate, advanced or highly professional level. Subsequently, the discussion is led to the Computer Driving License (CDL) and how far it lays the foundation for digital literacy necessary for researchers. The final section will deliver recommendations, how specifically Ethiopian researchers – as representatives of researchers from a developing country could get prepared to take most out of the free access to world class data bases, literature and research communities.
Entanglement entropy at CFT junctions
Creators: name: Gutperle, Michael
name: Miller, John D.
Publisher: name: arXiv
Year: 2017
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We consider entanglement through permeable junctions of $N$ $(1+1)$-dimensional free boson and free fermion conformal field theories. In the folded picture we constrain the form of the general boundary state. We calculate replicated partition functions with interface operators inserted in the partially-folded picture, from which the entanglement entropy is calculated. The functional form of the universal and constant terms are the same as the $N=2$ case, depending only of the total transmission of the junction and the unit volume of the zero mode lattice. For $N>2$ we see a sub-leading divergent term which does not depend on the parameters of the junction. For $N=3$ we consider some specific geometries and discuss various limits.
description: 51 pages, 6 figures