cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
A Comparative Study of Profitability of Agricultural Cooperatives in Poland and Around the World
Creators: name: Matyja, Małgorzata
name: Matyja, Małgorzata
Publisher: name: Unknown
Year: 2017
Subjects: subject: Agribusiness
subject: Community/Rural/Urban Development
subject: Industrial Organization
subject: International Development
subject: Productivity Analysis
subject: agricultural cooperatives
subject: profitability
subject: analysis of variance
subject: Kruskal-Wallis test
subject: Poland

description: The differences in perception and functioning of agricultural cooperatives in different parts of the world are visible to the naked eye. Moreover, the literature brings different findings in respect to comparisons between cooperatives and non-cooperatives in terms of profitability. The purpose of this article was to identify the differences in profitability between agricultural cooperatives in selected parts of the world as well as between cooperatives and other enterprises in Polish agriculture. The description of results of the world report on cooperatives and analysis of variance on 300 agricultural enterprises in Poland were used in order to accomplish the above purpose. The main findings prove that American agricultural cooperatives achieved the best profitability results and that cooperatives have lower profitability than other enterprises in agriculture.
description: eISSN 2544-0659
Critical or tricritical point in mixed-action SU(2) lattice gauge theory?
Creators: name: Grady, Michael
Publisher: name: arXiv
Year: 2004
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: FOS: Physical sciences

description: An analysis of scaling along the first-order bulk transition line in fundamental-adjoint SU(2) lattice gauge theory strongly supports the first-order endpoint being a tricritical point, and is inconsistent with it being an ordinary critical point as is usually assumed. If tricritical, the transition must continue from the endpoint further into the phase diagram as a second-order bulk transition and extend to and beyond the Wilson axis. Observations indicate that this is most likely the same transition that has been traditionally considered a finite-temperature transition.
description: 20 pages, LaTex, 9 figures. Several arguments strengthed, new fits added to Fig. 6, typos corrected
Fingerprints of binary black hole formation channels encoded in the mass and spin of merger remnants
Creators: name: Sedda, Manuel Arca
name: Mapelli, Michela
name: Spera, Mario
name: Benacquista, Matthew
name: Giacobbo, Nicola
Publisher: name: arXiv
Year: 2020
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: Binary black holes (BBHs) are thought to form in different environments, including the galactic field and (globular, nuclear, young and open) star clusters. Here, we propose a method to estimate the fingerprints of the main BBH formation channels associated with these different environments. We show that the metallicity distribution of galaxies in the local Universe along with the relative amount of mergers forming in the field or in star clusters determine the main properties of the BBH population. Our fiducial model predicts that the heaviest merger to date, GW170729, originated from a progenitor that underwent 2--3 merger events in a dense star cluster, possibly a galactic nucleus. The model predicts that at least one merger remnant out of 100 BBH mergers in the local Universe has mass $90 < M_{\rm rem}/ {\rm ~M}_\odot \leq{} 110$, and one in a thousand can reach a mass as large as $M_{\rm rem} \gtrsim 250$ M$_\odot$. Such massive black holes would bridge the gap between stellar-mass and intermediate-mass black holes. The relative number of low- and high-mass BBHs can help us unravelling the fingerprints of different formation channels. Based on the assumptions of our model, we expect that isolated binaries are the main channel of BBH merger formation if $\sim 70\%$ of the whole BBH population has remnants masses $<50$ M$_\odot$, whereas $\gtrsim{}6$\% of remnants with masses $>75$ M$_\odot$ point to a significant sub-population of dynamically formed BBH binaries.
description: 25 pages, 13 figures, 2 tables. Accepted for publication in the ApJ
The Crop Insurance Systems in Poland Towards the EU
Creators: name: Parlińska, Agnieszka
name: Parlińska, Maria
name: Parlińska, Agnieszka
name: Parlińska, Maria
Publisher: name: Unknown
Year: 2017
Subjects: subject: Agribusiness
subject: Agricultural and Food Policy
subject: International Relations/Trade
subject: Risk and Uncertainty
subject: crop insurance
subject: subsidies
subject: risk

description: The increasing number of unfavorable conditions of agricultural production causes the farmers to suffer severe losses in their activity. At the same time, the increase in the profitability of agricultural production, the support of numerous European Union funds, led to increased interest in insurance as an instrument supporting agricultural risk management. Hence, both the agricultural industry and the insurance industry see the need to create an effective agricultural and livestock insurance system. The paper examines the changes and scope of crop insurance in Poland towards the European Countries. There were presented issues connecting to policies, regulation and state aid rules, crop insurance level in EU countries and characteristic of the crop insurance market – case study Poland. There was used descriptive and comparative methods, as well as the selected statistical method. The analysis was performed in the years 2005-2016.
description: eISSN 2544-0659
Jet quenching in a multi-stage Monte Carlo approach
Creators: name: Kumar, A.
name: Angerami, A.
name: Bass, S. A.
name: Cao, S.
name: Chen, Y.
name: Coleman, J.
name: Cunqueiro, L.
name: Dai, T.
name: Du, L.
name: Ehlers, R.
name: Elfner, H.
name: Everett, D.
name: Fan, W.
name: Fries, R.
name: Gale, C.
name: He, Y.
name: Heffernan, M.
name: Heinz, U.
name: Jacak, B. V.
name: Jacobs, P. M.
name: Jeon, S.
name: Kauder, K.
name: Ke, W.
name: Khalaj, E.
name: Kordell, M.
name: Luo, T.
name: Luzum, M.
name: Majumder, A.
name: McNelis, M.
name: Mulligan, J.
name: Nattrass, C.
name: Oliinychenko, D.
name: Pablos, D.
name: Pang, L. G.
name: Park, C.
name: Paquet, J. -F.
name: Putschke, J. H.
name: Roland, G.
name: Schenke, B.
name: Schwiebert, L.
name: Shen, C.
name: Silva, A.
name: Sirimanna, C.
name: Soltz, R. A.
name: Tachibana, Y.
name: Vujanovic, G.
name: Wang, X. -N.
name: Wolpert, R. L.
name: Xu, Y.
name: Yang, Z.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Nuclear Theory (nucl-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: We present a jet quenching model within a unified multi-stage framework and demonstrate for the first time a simultaneous description of leading hadrons, inclusive jets, and elliptic flow observables which spans multiple centralities and collision energies. This highlights one of the major successes of the JETSCAPE framework in providing a tool for setting up an effective parton evolution that includes a high-virtuality radiation dominated energy loss phase (MATTER), followed by a low-virtuality scattering dominated (LBT) energy loss phase. Measurements of jet and charged-hadron $R_{AA}$ set strong constraints on the jet quenching model. Jet-medium response is also included through a weakly-coupled transport description.
description: 4 pages, 4 figures, contribution to the Quark Matter 2019 proceedings
Führen als responsives Geschehen: Dem Phänomen ‹Führen› auf der Spur
Creators: name: Anderegg, Niels
Publisher: name: Zenodo
Year: 2020
Subjects: Schulführung
Leadership
Führungsforschung
Phänomenologie
Netzwerktheorie

description: Seit den 1980er Jahren beschäftigt sich die Führungsforschung mit der Frage nach der Einflussnahme von Schulführung auf das Lernen der Schüler*innen. Im englischsprachigen Raum gehört das Thema Leadership for Learning seit Jahren zu den wichtigsten Forschungsschwerpunkten, während für den deutschsprachigen Raum noch wenig dazu geforscht wurde. Aus theoretischer Sicht zeigen sich unterschiedliche Schwierigkeiten, welche mit bisherigen Ansätzen nicht befriedigend beantwortet werden konnten. Im folgenden Beitrag sollen diese kurz angesprochen werden, um dann mittels phänomenologischer Zugangsweise dem Phänomen ‹Führen› nachzuspüren. Mittels einer Vignette soll gezeigt werden, dass Führen als responsives Geschehen verstanden werden kann. Netzwerktheoretisch kann dies als ein Wechselspiel von Control und Identity mittels Story hin zu einer Discipline erklärt werden.
description: +repphzhbib2020W
Importance and Comparative Advantages of the EU and US Agri-food Sector in World Trade in 1995-2015
Creators: name: Pawlak, Karolina
name: Pawlak, Karolina
Publisher: name: Unknown
Year: 2017
Subjects: subject: International Development
subject: International Relations/Trade
subject: international competitiveness
subject: comparative advantages
subject: export specialisation
subject: agri-food products
subject: world trade
subject: EU
subject: USA

description: The aim of the paper was to examine the evolution of the importance and comparative advantages of the EU and US agri-food sector in world trade in 1995-2015. The research is based on data from UNCTAD (United Nations Conference on Trade and Development) resources. The following indicators were used in the comparative advantage analysis: Balassa’s Revealed Comparative Advantage (RCA), Vollrath’s Revealed Competitiveness (RC), the Revealed Symmetric Comparative Advantage (RSCA), and the Lafay’s Trade Balance Index (TBI). In 1995-2015, the EU countries and the US were the largest players of world trade in agri-food products. The EU countries held comparative advantages in the global market as regards exports of products of animal origin whereas the exports of cereals, preparations of cereals, oilseeds and oleaginous fruits and meat products were the source of revealed comparative advantages for the US. Both the EU countries and the US reached high comparative advantages in trade in those assortment groups which corresponded to their highest shares in global exports and generated a high, consistently increasing positive trade balance. Therefore, their comparative advantages were the source of their favourable export specialisation profile, which is consistent with the classical comparative costs principle.
description: eISSN 2544-0659
title: 01_2044
Creators: name: Wesley Baldwin, John
name: Baldwin, John W.
Publisher: name: NAKALA - https://nakala.fr (Huma-Num - CNRS)
publisherIdentifier: https://ror.org/04ces3204
publisherIdentifierScheme: ROR
Year: 2018
Subjects: subject: LaMOP
subject: Laboratoire de Médiévistique Occidentale de Paris

description: L'ensemble de ces notes ont été crée par John Baldwin lors d'une de ses premières périodes de résidence à Paris. Ces documents comprennent tous les magistri qu’il avait pu rencontrer dans ses sources. Aux XIIème et XIIIème siècles, les universités n'existant pas encore, le titre de magister s'il évoque certainement une compétence n'est pas rattaché de façon systématique au passage par les écoles. De surcroît, les magistris sont le plus souvent désignés par leur seul prénom. La lecture de ces données est donc difficile et suppose un long travail pour tenter d'identifier un individu auquel on pourrait rattacher plusieurs mentions. John Baldwin avait donc renoncé à utiliser ces données pour donner un prolongement à sa magnifique étude sur les gradués d'université et leur emploi par les Capétiens et les Plantagenêts. Néanmoins, il a conservé ces données et elles sont potentiellement très utile dans le cadre de Studium, comme le sont toutes les mentions dans les volumes des Fasti Ecclesiae Gallicanae de chanoines portant ce titre de magister sans autres précisions. L'ampleur des dépouillements rend ces données très utiles et nous devons une grande reconnaissance à John Baldwin pour avoir pris la peine de faire photocopier ses fiches et de nous les avoir transmises amicalement.
Les données ainsi que les images des fiches sont accessibles sur le site Internet à l'adresse suivante : http://studium-baldwin.lamop.fr/.
Les transcriptions des fiches ont été effectuées par des étudiants de Paris 1 Panthéon - Sorbonne mais elles n'ont pas été corrigées par la suite.
description: Relation: https://lamop.hypotheses.org/
Numerical characterisation of stably stratified flows past spheres
Creators: name: Cocetta, Francesco
name: Gillard, Mike
name: Szmelter, Joanna
Publisher: name: Loughborough University
Year: 2020
Subjects: subject: 19999 Mathematical Sciences not elsewhere classified
subject: FOS: Mathematics

description: A numerical study of stably stratified flows past spheres at moderate Reynolds numbers is presented. The resolved flows can adequately describe a wide class of geophysical, environmental, and engineering flows characterised by the density stratification of the terrestrial atmosphere and oceanic thermocline. The range of physical phenomena developing when stratified flows impact single and multiple spheres constitute a convenient benchmark for complex geometry applications, e.g. mountains, islands, wind turbines, and buildings. Solutions of Navier-Stokes equations, in the incompressible Boussinesq limit, are obtained by applying a semi-implicit finite volume (FV) non-oscillatory forward-in-time (NFT) integration scheme enhanced by MPI parallelization. The developed model is applied for a systematic investigation of stratified flow patterns arising for a range of Froude numbers Fr ∈ [0.1,∞] at Reynolds numbers Re = 200 and Re = 300, for which the neutrally stratified flows induces distinctly different near-wake features.
Evaporation/Condensation of Ising Droplets
Creators: name: Nussbaumer, Andreas
name: Bittner, Elmar
name: Janke, Wolfhard
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: FOS: Physical sciences

description: Recently Biskup et al. [Europhys. Lett. 60 (2002) 21] studied the behaviour of d-dimensional finite-volume liquid-vapour systems at a fixed excess $δN$ of particles above the ambient gas density. They identify a dimensionless parameter $Δ(δN)$ and a universal constant $Δ_\mathrm{c}(d)$ and show that for $Δ< Δ_c$ a droplet of the dense phase occurs while for $Δ> Δ_c$ the excess is absorbed in the background. The fraction $λ_Δ$ of excess particles forming the droplet is given explicitly. Furthermore, they state, that the same is true for solid-gas systems. To verify these results, we have simulated the spin-1/2 Ising model on a square lattice at constant magnetisation equivalent to a fixed particle excess in the lattice-gas picture. We measured the largest minority droplet, corresponding to the solid phase, at various system sizes ($L=40, ..., 640$). Using analytic values for the spontaneous magnetisation $m_0$, the susceptibility $χ$ and interfacial free energy $τ_\mathrm{W}$ for the infinite system, we were able to determine $λ_Δ$ in very good agreement with the theoretical prediction.
description: 6 pages, 5 figures, talk given at Lattice 2005 (Spin and Higgs models) Dublin
title: An Exploration of How Childminders Engage in Reflection With Others and Become Reflective Practitioners
Creators: name: McKeogh, Susan Ann
Publisher: name: The Open University
Year: 2013

description: There is recent research (Cable and Goodliff, 2010; Paige-Smith and Craft, 2008a; Cooper, 2010) within the same general contexts as this thesis, but limited research bringing these contexts together and none focusing specifically on childminders and their particular issues of both working in isolation for much of their day-to-day practice and low status (real or perceived); and then the impact of these factors on whom they reflect with, and how they reflect on, their practice. This research adopts a qualitative case study approach to explore the reflective practices of nineteen childminders studying a distance-learning Foundation Degree in Early Years. Data collection methods include questionnaires, semistructured telephone interviews and e-mail correspondence. The research questions aim to explore: childminders’ understanding of reflective practice and how this changes during their studies, the range of factors involved in engaging in effective reflection on practice and the decisions childminders make in deciding whom to reflect with, and the impact of professional identity on reflective practice. The main findings from this research reveal a shift in reflective practices as the childminders gain in knowledge and skills as a result of their studies. It is unsurprising that the childminders reflect with others, given that the FDEY promotes the importance of reflection with others. However, the data shows the childminders not only gain an understanding of the value and benefits of reflecting on practice but this awareness prompts significant changes in whom the childminders seek to reflect with, bringing with it a need to align themselves with a different community of practice as their professional identity develops. For those facilitating reflective opportunities, and those engaging in reflection, this research draws attention to the importance, of understanding the factors impacting on reflective practices, and the potentially transforming nature of reflective practice on professional identity.
Towards Simple, Efficient, and Centralized Log Monitoring, and Analysis of 5G Core Cloud-Native Network Functions
Creators: name: Otieno, Humphrey Owuor
name: Mwangama, Joyce
name: Malila, Bessie
Publisher: name: University of Cape Town
Year: 2024
Subjects: classificationCode: 400899
subject: Electrical engineering not elsewhere classified

description: Cloudification of 5G Network Functions is the desired implementation strategy for 5G systems. However, running core network services as independent Cloud-Native Network Functions present log management and troubleshooting challenges. Accessing logs directly via individual containers running these services is not an elegant approach. Centralizing these logs is an efficient strategy. However, 5G Cloud-Native Network Functions on container orchestration platforms produce multi-tier logs packed with unwanted extra data. This information is difficult to interpret and analyse. This paper proposes a framework that implements a centralized log capturing, monitoring, and analysis tool on a 5G network running a cloud-native 5G core, a virtualized gNodeB, and user equipment. We then parse these log messages to remove irrelevant information. Based on the results, centralizing logs simplifies the management and troubleshooting of 5G core Cloud-Native Network Functions. Furthermore, parsing these logs to extract meaningful information is essential for analytics, troubleshooting, fault management, automation, and intelligence.
Quantum-corrected scattering and absorption of a Schwarzschild black hole with GUP
Creators: name: Anacleto, M. A.
name: Brito, F. A.
name: Campos, J. A. V.
name: Passos, E.
Publisher: name: arXiv
Year: 2020
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: In this paper we have implemented quantum corrections for the Schwarzschild black hole metric using the generalized uncertainty principle (GUP) in order to investigate the scattering process. We mainly compute, at the low energy limit, the differential scattering and absorption cross section by using the partial wave method. We determine the phase shift analytically and verify that these quantities are modified by the GUP. We found that due to the quantum corrections from the GUP the absorption is not zero as the mass parameter goes to zero. A numerical analysis has also been performed for arbitrary frequencies.
description: 10 pages, 4 figures, references added
Linear and Non-linear Relationships Between Shares of the Agrifood Industries of the Warsaw Stock Exchange. Risk Aspect
Creators: name: Pera, Jacek
name: Pera, Jacek
Publisher: name: Unknown
Year: 2017
Subjects: subject: Industrial Organization
subject: Research and Development/Tech Change/Emerging Technologies
subject: Risk and Uncertainty
subject: shares
subject: risk
subject: causal linear relationship
subject: non- causal linear relationship
subject: agri-food industry

description: Despite a wide range of research on the agricultural market conducted so far, relatively little attention has been devoted to a comprehensive analysis of linear and non-linear causality in relation to the entire agri-food sector in Poland, in the context of risk. The objective of this study is therefore to analyze the linear and non-linear relationships between shares of WSE's agri-food industry sectors in terms of risk. The study covered three sectors of agri-food sector currently existing on the WSE (29 listed companies): Foods (21 listed companies), Agricultural Production and Fisheries (5 listed companies) and Food and Foodstuffs and fast-trafficking foodstuffs (3 listed companies). The existence of linear relationships was verified using the test procedure proposed by Hong, Liu, Wang and Łęt, while non-linear relationships were verified using the Diks-Panchenko, Orzeszko and Osińska tests’s. The study was carried out on the basis of data from companies of the agri-food industry listed on the Warsaw Stock Exchange in the period from 1 May 2010 to 1 May 2017. The chosen research methodology was dictated by the correlation with investment risk on the WSE. The strongest and most enduring dependencies have been found in the agricultural and fisheries sectors. In the foodstuff sector and the fast-marketable sector, the risk of investment in the listed companies was temporary.
description: eISSN 2544-0659
Climate action partnership : contribution of food GHG emissions reductions : moving UBC beyond climate neutral
Creators: name: Aghili, Anahita
name: Allain, Venessa
name: Ang, Juniolucano
name: Appeldoorn, Trista
name: Au-Yeung, Tiffany
name: Badesso, Kirsten
name: Barker, Shawna
Publisher: name: The University of British Columbia
Year: 2014

description: Avoiding serious global climate change will require deep cuts in greenhouse gas (GHG) emissions from all sources. As with many universities, UBC is associated with many types of GHG emission such as production and distribution of food on campus. Our task was to study emission reductions and climate action targets outlined by the UBC Climate Action Partnership. As a group, we have chosen to focus on education and awareness about the effects the food system and our food choices have on climate change. To achieve this goal our research methodology included interviews, research, review of previous years' papers, attending guest lectures given by AMS Food and Beverage Department and UBC Food Services, UBC farm, and Sprouts. It was hoped that through this research we could begin to develop educational tools that will help new UBC students understand what sustainability is, why it is important and what it means to UBC. This report provides details of our findings and the educational tools we developed in partnership with different groups around UBC. Our recommendations, which are based on our findings, can be used to further develop and refine existing research. Disclaimer: “UBC SEEDS provides students with the opportunity to share the findings of their studies, as well as their opinions, conclusions and recommendations with the UBC community. The reader should bear in mind that this is a student project/report and is not an official document of UBC. Furthermore readers should bear in mind that these reports may not reflect the current status of activities at UBC. We urge you to contact the research persons mentioned in a report or the SEEDS Coordinator about the current status of the subject matter of a project/report.”
Comparison of Poland's Agrarian Structure with other EU Countries Using Cluster Analysis
Creators: name: Pomichowski, Piotr
name: Pomichowski, Piotr
Publisher: name: Unknown
Year: 2017
Subjects: subject: Agribusiness
subject: Farm Management
subject: agricultural holdings problems
subject: farm fragmentation
subject: agrarian structure
subject: cluster analysis

description: The analysis of agrarian structure of agricultural holdings in Poland was carried out in comparison with other EU countries. The study was conducted on the 2005 and 2013 data derived from Eurostat databases by means of cluster analysis. The results of the analysis confirmed the hypothesis of improvement of the agrarian structure of agricultural holdings in Poland vis-a-vis other EU countries. An increase in the average farm size was observed with a decrease in the number of entities.
description: eISSN 2544-0659
Saissetia coffeae Coccoidea
Creators: name: Kondo, Takumasa
name: Muñoz, Jazmín Adriana
Publisher: name: Zenodo
Year: 2016
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hemiptera
Coccidae
Saissetia
Saissetia coffeae

description: Saissetia coffeae (Walker)
 Material studied. Colombia. Valle del Cauca: Alcalá: Finca La Porra, 04°40 ′ 13.1 ″ N, 75°44 ′ 34.3 ″ W, 1395 m, 10.xi.2008, coll. A. Arias, J. Muñoz, 1 (UVCO), 2 (MECP); Finca Los Alpes, 04°17 ′ 56 ″ N, 75°53 ′ 00 ″ W, 1376 m, 28.x.2008, coll. J. Muñoz, ex avocado cv. ‘ Booth 8’, 1 (UVCO); Hacienda La Polonia, 04°40 ′ 09.8 ″ N, 75°45 ′ 14.1 ″ W, 1369 m, 31.x.2008, coll. T. Kondo, ex avocado cv. ‘ Papelillo’ (‘ Lorena’), 1 (MECP); Caicedonia: Finca La Cabaña, 04°17 ′ 43.8 ″ N, 75°50 ′ 39.4 ″ W, 1705 m, 09.ii.2009, coll. J. Muñoz, ex avocado cv. ‘ Booth’, 2 (UVCO), 1 (MECP); Finca Corinto, 04°17 ′ 04.2 ″ N, 75°51 ′ 53.9 ″ W, 1650 m, 20.iv.2009, coll. J. Muñoz, ex avocado cv. ‘ Papelillo’ (‘ Lorena’), 2 (UVCO), 2 (MECP); Finca Las Margaritas, 04°17 ′ 37.1 ″ N, 75°53 ′ 18.0 ″ W, 1352 m, 26.v.2009, coll. J. Muñoz, ex avocado cv. ‘ Papelillo’ (‘ Lorena’), (2 (UVCO), 3 (MECP).
 Distribution. Cosmopolitan (Ben-Dov et al. 2015).
 Remarks. The hemispherical scale, S. coffeae was found on both leaf surfaces of avocados of ‘Booth’ and ‘Lorena’ cultivars.
description: Published as part of Kondo, Takumasa & Muñoz, Jazmín Adriana, 2016, Scale insects (Hemiptera: Coccoidea) associated with avocado crop, Persea americana Mill. (Lauraceae) in Valle del Cauca and neighboring departments of Colombia, pp. 1-24 in Insecta Mundi 2016 (465) on page 11, DOI: 10.5281/zenodo.4645809
The existence of minimizers for an isoperimetric problem with Wasserstein penalty term in unbounded domains
Creators: name: Xia, Qinglan
name: Zhou, Bohan
Publisher: name: arXiv
Year: 2020
Subjects: subject: Classical Analysis and ODEs (math.CA)
subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics
subject: 49J45, 49Q20, 49Q05, 49J20

description: In this article, we consider the (double) minimization problem $$\min\left\{P(E;Ω)+λW_p(E,F):~E\subseteqΩ,~F\subseteq \mathbb{R}^d,~\lvert E\cap F\rvert=0,~ \lvert E\rvert=\lvert F\rvert=1\right\},$$ where $p\geqslant 1$, $Ω$ is a (possibly unbounded) domain in $\mathbb{R}^d$, $P(E;Ω)$ denotes the relative perimeter of $E$ in $Ω$ and $W_p$ denotes the $p$-Wasserstein distance. When $Ω$ is unbounded and $d\geqslant 3$, it is an open problem proposed by Buttazzo, Carlier and Laborde in the paper ON THE WASSERSTEIN DISTANCE BETWEEN MUTUALLY SINGULAR MEASURES. We prove the existence of minimizers to this problem when $\frac{1}{p}+\frac{2}{d}>1$, $Ω=\mathbb{R}^d$ and $λ$ is sufficiently small.
Universality in nontrivial continuum limits: a model calculation
Creators: name: Meurice, Y.
name: Oktay, M. B.
Publisher: name: arXiv
Year: 2004
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We study numerically the continuum limit corresponding to the non-trivial fixed point of Dyson's hierarchical model. We discuss the possibility of using the critical amplitudes as input parameters. We determine numerically the leading and subleading critical amplitudes of the zero-momentum $2l$-point functions in the symmetric phase up to l=10 for randomly chosen local measures. In the infinite cutoff limit, the dimensionless renormalized coupling constants are in very good approximation universal (independent of the choice of the local measure). In addition, ratios of subleading amplitudes also appear to be universal. If we neglect very small log-periodic corrections, the non-universal features of the 2l-point functions appear to depend only the non-universal features of the 2-point function. We infer that when 2l becomes large, the dimensionless renormalized couplings grow as (2l)! despite the non-perturbative nature of our calculation, while the universal ratios of subleading amplitudes grow linearly.
description: 10 pages, 5 figures, uses revtex4, includes a new section on the effective potential
Choice of Time-Series Forecasting Method Using Discriminant Scores
Creators: name: Shah, C.
name: King, M. L.
name: Shah, C.
name: King, M. L.
Publisher: name: Unknown
Year: 1992
Subjects: Research Methods/ Statistical Methods

description: A lot of research has been done on comparing the forecasting accuracy of different univariate time series forecasting methods. The biggest such study, using empirical data, was undertaken by Makridakis et al. (1982). The evidence from such comparative studies indicate that there is not one "best" method for all kinds of data. Furthermore, there also seems to be evidence to suggest that the simpler methods, such as exponential smoothing, often perform as well as or even better than the more complex methods. This is particularly true for short term forecasting. Unfortunately, there has been limited success in identifying the factors that contribute to the relative advantage of one method over another. Consequently a practitioner is still faced with the problem of objectively choosing one out of several methods available to use in forecasting a given time series. In this paper we address this problem by considering certain characteristics of a time series in order to calculate its discriminant score. This score is then used to calculate the probability of a particular method being "best" in forecasting that series. Three forecasting methods, simple exponential smoothing, Holt-Winters method and basic structural time series model using the STAMP package, are considered. Quarterly time series from Makridakis et al. (1982) "M-Competition" are used as data.
Blocking of martensitic transition at the nano-scale in the Ti2NiCu wedge
Creators: name: Lega, Petr
name: Kartsev, Alexey
name: Nedospasov, Ilya
name: Lv, Shuhui
name: Lv, Xiaoling
name: Tabachkova, Natalia
name: Irzhak, Artemy
name: Orlov, Andrey
name: Koledovy, Victor
Publisher: name: arXiv
Year: 2020
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Shape memory effect associated with martensitic transformations is of the rapidly developing field in nanotechnologies, where industrial use of systems established on that effect provide greater flexibility on the nano-devices fabrication of various kind. And therefore it addresses questions to the phase transition phenomena at low-scale and its limitations and control. In this report, we studied the crystal structure of tapered plates of Ti$_2$NiCu alloy and the temperature $T_c$ at which the martensitic transition occurs. We demonstrated that $T_c$ has a strongly descending character as a function of the plate thickness $h$. The critical thickness value at which the transition completely suppressed is 20 nm. Moreover, the obtained results for $T_c(h)$ curves indicate the hysteretic nature of the transition. These findings open the pathway for size limits indication and regimes modulation where the alloy-based nano-mechanical devices can be tuned to operate more efficiently.
Economic Motivations for Limited Dependent and Qualitative Variable Models
Creators: name: Fry, T. R. L.
name: Brooks, R. D.
name: Comley, B. R.
name: Zhang, J.
name: Fry, T. R. L.
name: Brooks, R. D.
name: Comley, B. R.
name: Zhang, J.
Publisher: name: Unknown
Year: 1992
Subjects: Research Methods/ Statistical Methods

description: The greater availability of survey data, a succession of papers dealing with the statistical issues arising from the analysis of such data and the appearance of software packages, such as LIMDEP (Greene (1991)), have led to a remarkable increase in the application of limited dependent and qualitative variable models in economics. Economic analysis of the behaviour of individual decision makers often leads to models which are of a limited dependent or qualitative variable nature. This paper attempts to show how the use of limited dependent and qualitative variable models naturally arises from the more general framework of modifications to traditional economic optimisation problems.
Exploring ways to lighten AMS Food and Beverage Department's ecological footprint : Blue Chip Cookies
Creators: name: Han, Peishan
name: Higgins, Chris
name: Hill, Jennifer
name: Hobin, Lindsay
name: Holmes, Emma
name: Hong, Christina
name: Hsieh, Annie
name: Hsu, Declan
Publisher: name: The University of British Columbia
Year: 2014

description: Globally, the over consumption of animal products, unsustainable farming practices, and excessive transportation and packaging have resulted in a food system that has an immensely detrimental effect on the environment and that cannot be sustained. The University of British Columbia started the Food System Project, an ongoing collaborative research project involving several key stakeholders, in order to make their own food system more sustainable and to create a food system model that will positively influence the global food system. This paper specifically looks at reducing the ecological footprint of the Alma Matter Society's Food and Beverage Department outlet, Blue Chip Cookies through the creation of a lower footprint menu item. Primary research in the form of a survey and taste test as well as secondary sources in the form of literature review s were utilized for this study. To tackle this issue, our group created a vegan breakfast bar that incorporates local British Columbia produce. Based on a taste test, survey and cost analysis we determined that our breakfast bar would be well received by Blue Chip Cookies customers. In order to increase awareness of the new product and educate people about the importance of reducing their ecological footprint, a marketing strategy and informative pamphlets were created. We also did market research and found that the product was more likely to appeal to the general public if it was advertised as a low ecological footprint product, rather than vegan. Disclaimer: “UBC SEEDS provides students with the opportunity to share the findings of their studies, as well as their opinions, conclusions and recommendations with the UBC community. The reader should bear in mind that this is a student project/report and is not an official document of UBC. Furthermore readers should bear in mind that these reports may not reflect the current status of activities at UBC. We urge you to contact the research persons mentioned in a report or the SEEDS Coordinator about the current status of the subject matter of a project/report.”
Saissetia neglecta De Lotto 1969
Creators: name: Kondo, Takumasa
name: Muñoz, Jazmín Adriana
Publisher: name: Zenodo
Year: 2016
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hemiptera
Coccidae
Saissetia
Saissetia neglecta

description: Saissetia neglecta De Lotto (Fig. 1H)
 Material studied. Colombia. Valle del Cauca: Alcalá: Finca La Porra, 04°40 ′ 13.1 ″ N, 75°44 ′ 34.3 ″ W, 1395 m, 10.xi.2008, coll. A. Arias, J. Muñoz, 1 (UVCO), 1 (MECP); Finca Los Alpes, 04°42 ′ 24.8 ″ N, 75°49 ′ 01.0 ″ W, 1194 m, 02.xii.2008, coll. A. Arias, J. Muñoz, 1 (UVCO), 2 (MECP); Finca Villa del Sol, 04°42 ′ 06.1 ″ N, 75°50 ′ 00.5 ″ W, 1215 m, 02.xii.2008, coll. J. Muñoz, ex avocado cv. ‘ Papelillo’ (‘ Lorena’), 2 (UVCO), 3 (MECP); Finca La Pastora, 04°39 ′ 41.6 ″ N, 75°47 ′ 46.6 ″ W, 1240 m, 27.iv.2009, coll. J. Muñoz, 1 (UVCO), 1 (MECP). Caicedonia: Finca La Cabaña, 04°17 ′ 43.8 ″ N, 75°50 ′ 39.4 ″ W, 1705 m, 09.ii.2009, coll. T. Kondo, ex avocado cv. ‘ Papelillo’ (‘ Lorena’), 2 (UVCO), 1 (MECP); Finca Corinto, 04°17 ′ 04.2 ″ N, 75°51 ′ 53.9 ″ W, 1650 m, 20.iv.2009, coll. J. Muñoz, 1 (UVCO), 1 (MECP); Finca El Chaquiro, 04°17 ′ 00.0 ″ N, 75°51 ′ 24.7 ″ W, 1651 m; Finca Las Margaritas, 04°17 ′ 37.1 ″ N, 75°53 ′ 18.0 ″ W, 1352 m, coll. J. Muñoz, ex avocado cv. ‘ Papelillo’ (‘ Lorena’), 1 (UVCO). Palmira: Rozo, Finca Brasil, 03°36 ′ 36.0 ″ N, 76°25 ′ 08.5 ″ W, 967 m, 10.xii.2008, coll. A. Arias, 1 (MECP). Ulloa: Finca La Catalina, 04°41 ′ 38.8 ″ N, 75°45 ′ 10.4 ″ W, 1301 m, 04.v.2009, coll. J. Muñoz, ex avocado cv. ‘ Papelillo’ (‘ Lorena’), 1 (UVCO).
 Distribution. Australasian: Vanuatu. Nearctic: Mexico, USA. Neotropical: Argentina, Belize, Bermuda, Colombia, Costa Rica, Cuba, El Salvador, Galapagos Islands, Guadeloupe, Guatemala, Honduras, Panama, Puerto Rico, Saint Lucia, U.S. Virgin Islands, Venezuela. Oriental: Hong Kong (Ben-Dov et al. 2015).
 Remarks. In the present study, the Caribbean black scale, S. neglecta was commonly found on twigs of ‘Booth 8’, ‘Lorena’, ‘Santana’ and ‘Trinidad’ cultivars.
description: Published as part of Kondo, Takumasa & Muñoz, Jazmín Adriana, 2016, Scale insects (Hemiptera: Coccoidea) associated with avocado crop, Persea americana Mill. (Lauraceae) in Valle del Cauca and neighboring departments of Colombia, pp. 1-24 in Insecta Mundi 2016 (465) on page 11, DOI: 10.5281/zenodo.4645809
Data-driven surrogates for high dimensional models using Gaussian process regression on the Grassmann manifold
Creators: name: Giovanis, Dimitris G.
name: Shields, Michael D.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Numerical Analysis (math.NA)
subject: FOS: Mathematics

description: This paper introduces a surrogate modeling scheme based on Grassmannian manifold learning to be used for cost-efficient predictions of high-dimensional stochastic systems. The method exploits subspace-structured features of each solution by projecting it onto a Grassmann manifold. The method utilizes a solution clustering approach in order to identify regions of the parameter space over which solutions are sufficiently similarly such that they can be interpolated on the Grassmannian. In this clustering, the reduced-order solutions are partitioned into disjoint clusters on the Grassmann manifold using the eigen-structure of properly defined Grassmannian kernels and, the Karcher mean of each cluster is estimated. Then, the points in each cluster are projected onto the tangent space with origin at the corresponding Karcher mean using the exponential mapping. For each cluster, a Gaussian process regression model is trained that maps the input parameters of the system to the reduced solution points of the corresponding cluster projected onto the tangent space. Using this Gaussian process model, the full-field solution can be efficiently predicted at any new point in the parameter space. In certain cases, the solution clusters will span disjoint regions of the parameter space. In such cases, for each of the solution clusters we utilize a second, density-based spatial clustering to group their corresponding input parameter points in the Euclidean space. The proposed method is applied to two numerical examples. The first is a nonlinear stochastic ordinary differential equation with uncertain initial conditions. The second involves modeling of plastic deformation in a model amorphous solid using the Shear Transformation Zone theory of plasticity.
description: 31 pages, 22 Figures
On the Relationship between Software Complexity and Security
Creators: name: Alenezi, Mamdouh
name: Zarour, Mohammad
Publisher: name: arXiv
Year: 2020
Subjects: subject: Software Engineering (cs.SE)
subject: Cryptography and Security (cs.CR)
subject: FOS: Computer and information sciences

description: This work aims at discussing the complexity aspect of software while demonstrating its relationship with security. Complexity is an essential part of software; however, numerous studies indicate that they increase the vulnerability of the software systems and introduce bugs in the program. Many developers face difficulty when trying to understand the complex components of software. Complexity in software increases when objects in the software are used to design a more complex object while creating a hierarchical complexity in the system. However, it is necessary for the developers to strive for minimum complexity, as increased complexity introduces security risks in the software, which can cause severe monetary and reputational damage to a government or a private organization. It even causes bodily harm to human beings with various examples found in previous years where security breaches led to severe consequences. Hence it is vital to maintain low complexity and simple design of structure. Various developers tend to introduce deliberate complexities in the system so that they do not have to write the same program twice; however, it is getting problematic for the software organizations as the demands of security are continually increasing.
BOSHLANG'ICH SINFLARDA INGLIZ TILINI O'QITISH METODIKASI
Creators: name: To'rayeva, Marjona
Publisher: name: Zenodo
Year: 2024

description: Mazkur maqola boshlang'ich sinflarda bolalarga ingliz tili tez oson o'qitishning samarali metodlari haqida atroflicha yoritilgan. Ushbu maqolada bolalarga ingliz tilini mazmunli va qiziqarli o'rgatish usullari bilan tanishishingiz mumkin.
Rationalization of Exponential Smoothing in Terms of a Statistical Framework with Multiplicative Disturbances
Creators: name: Koehler, Anne
name: Ord, Keith
name: Snyder, Ralph D.
name: Koehler, Anne
name: Ord, Keith
name: Snyder, Ralph D.
Publisher: name: Unknown
Year: 1992
Subjects: subject: Research Methods/ Statistical Methods
subject: Exponential smoothing
subject: forecasting
subject: time series analysis

description: It is established in this paper that exponential smoothing, in its most general linear form, is an optimal method of forecasting in large samples for time series with an irregular component, the size of which depends on a local mean. As such it is demonstrated that exponential smoothing has a statistical basis that extends beyond the framework of Box and Jenkins.
title: Motivational and Enabling Factors of Environmental Engagement in the SMEs of Developing Economies: Perceptions From the Leather Industry in Pakistan
Creators: name: Wahga, Aqueel Imtiaz
Publisher: name: The Open University
Year: 2014

description: Globally small and medium-sized enterprises (SMEs) are under constant pressure of different stakeholders to adopt environmentally responsible business practices. It has also inspired researchers, who have identified different internal and external drivers of and barriers to environmental engagement of SMEs. Crucially, the research on factors that might enable the environmental practices of SMEs is limited indeed. At the same time, much of the prior literature represents the context of developed economies. Consequently, little is known about the environmental practices of SMEs in developing economies. This qualitative study research has tried to address this gap in literature by exploring the influence of human capital- as an enabling factor- on environmental engagement of SMEs in the leather industry in Pakistan, which is a developing economy. Also the motivations for adopting environmental practices are explored. The thematic analysis of 8 Skype-based interviews has revealed that SMEs in the leather industry develop links with environmentally responsible suppliers to get environment friendly inputs, get environmental certifications and adopt different resource saving and pollution prevention measures to reduce their environmental impacts. Considerably, contrary to the earlier studies that often regard compliance with regulation as a primary motivation for SMEs to adopt environmental practices in developed economies, this research has identified that for the SMEs in leather industry in Pakistan the pressure from customers (mainly international buyers) is the leading motivation for environmental engagement. This study also asserts that human capital does enable the environmental practices of SMEs but it is hard to explain its exact impact. Significantly, this study highlights that often the investment in environmental initiatives is pre-dominantly informed by the economic rationale and willingness of owner-mangers to invest in such measures and less by the academic qualification and environmental-awareness of owner-managers and the sustainability rationale.
Characterizing Cancer Burden in the American Indian Population in North Carolina.
Creators: name: Spees, Lisa P
name: Akinyemiju, Tomi F
name: Baggett, Christopher D
name: Meernik, Clare
name: Salas, Ana I
name: Morris, Hayley N
name: Jackson, Bradford E
name: Emerson, Marc A
name: Bell, Ronny A
name: Wheeler, Stephanie B
name: Raveendran, Yadurshini
Publisher: name: American Association for Cancer Research (AACR)
Year: 2024

description: BACKGROUND: The American Indian (AI) population in North Carolina has limited access to the Indian Health Service. Consequently, cancer burden and disparities may differ from national estimates. We describe the AI cancer population and examine AI-White disparities in cancer incidence and mortality.
METHODS: We identified cancer cases diagnosed among adult AI and White populations between 2014 and 2018 from the North Carolina Central Cancer Registry. We estimated incidence and mortality rate ratios (IRR and MRR) by race. In addition, between the AI and White populations, we estimated the ratio of relative frequency differences [RRF, with 95% confidence limits (CL)] of clinical and sociodemographic characteristics. Finally, we evaluated the geographic distribution of incident diagnoses among AI populations.
RESULTS: Our analytic sample included 2,161 AI and 204,613 White individuals with cancer. Compared with the White population, the AI population was more likely to live in rural areas (48% vs. 25%; RRF, 1.89; 95% CL, 1.81-1.97) and to have Medicaid (18% vs. 7%; RRF, 2.49; 95% CL, 2.27-2.71). Among the AI population, the highest age-standardized incidence rates were female breast, followed by prostate and lung and bronchus. Liver cancer incidence was significantly higher among the AI population than White population (IRR, 1.27; 95% CL, 1.01-1.59). AI patients had higher mortality rates for prostate (MRR, 1.72; CL, 1.09-2.70), stomach (MRR, 1.82; 95% CL, 1.15-2.86), and liver (MRR, 1.70; 95% CL, 1.25-2.33) cancers compared with White patients.
CONCLUSIONS: To reduce prostate, stomach, and liver cancer disparities among AI populations in North Carolina, multi-modal interventions targeting risk factors and increasing screening and treatment are needed.
IMPACT: This study identifies cancer disparities that can inform targeted interventions to improve outcomes among AI populations in North Carolina.
Large-eddy-simulation of buoyancy-induced mixing for water treatment applications
Creators: name: B. Chen
name: B. Fraga
Publisher: name: Loughborough University
Year: 2020
Subjects: subject: 19999 Mathematical Sciences not elsewhere classified
subject: FOS: Mathematics

description: Large-Eddy Simulation is applied to investigate the turbulent mixing produced by aeration system in wastewater treatment. The solver uses an Eulerian-Lagrangian point-particle model to couple liquid and gas phases. Transport of a passive tracer is simulated to visualize the homogeneity of mixing. The accuracy of the solver predicting the mixing of the tracer time has been validated versus experimental data in a bubble reactor with different diffuser configurations. The mixing induced by bubble screens is simulated and compared - at different flow rates - with that produced by discrete plumes. The results show significant differences in the mixing times and energetic efficiency for different aerator setups.