cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Zmienność cen tusz jagnięcych w wybranych krajach UE
Creators: name: Rokicki, Tomasz
name: Rokicki, Tomasz
Publisher: name: Unknown
Year: 2015
Subjects: subject: Agribusiness
subject: Demand and Price Analysis
subject: International Relations/Trade
subject: Livestock Production/Industries
subject: Production Economics
subject: lamb meat
subject: European Union
subject: price changes
subject: / tusze jagnięce
subject: Unia Europejska
subject: zmiany cen

description: The aim of the study was to present the variability of lamb meat prices in selected EU countries. The article presented the prices for meat of heavy lambs (in live weight 23-40 kg). The paper included research for ten EU member countries. The highest prices were recorded in France, and the lowest in Romania. The price level in most countries was at the median level of the EU. In 2007-2013, the highest increase in prices occurred in the United Kingdom and Sweden, and the lowest in Spain. The biggest price changes were in Sweden, Spain and the United Kingdom, and the smallest in Austria, France and Germany. As a rule, there were seasonal fluctuations. The highest prices occurred in the winter months and the lowest in summer. The reason was the seasonality of production. Changes in the price of lamb and mutton had the same direction as price changes in the economy. The increase in prices of lamb meat was generally positively correlated with the increase in GDP per capita. In the case of sheep populations, relationships were negative. Only in German was there a very strong relationship between the level of lamb prices and the parameters of the economy. / Synopsis. Celem głównym badań było przedstawienie zmienności cen tusz jagnięcych w krajach UE i próba wskazania występujących prawidłowości. W artykule przedstawiono ceny tusz jagnięcych otrzymywane za jagnięta ciężkie (w wadze żywej 23-40 kg). Do badań przyjęto metodą doboru celowego dziesięć państw członkowskich UE. Najwyższe ceny tusz jagnięcych odnotowano we Francji, najniższe w Rumuni, a w większości państw były one zbliżone do średniej unijnej. W latach 2007-2013 największy wzrost cen wystąpił w Wielkiej Brytanii i Szwecji, zaś najmniejszy w Hiszpanii. Największe zmiany cen występowały w Szwecji, Hiszpanii i Wielkiej Brytanii, zaś najmniejsze w Austrii, Francji i Niemczech. Z reguły występują sezonowe wahania cen. Najwyższe ceny były w miesiącach zimowych, a najniższe w letnich. Przyczyną była sezonowość produkcji. Zmiany w cenach tusz jagnięcych podążały z reguły w tym samym kierunku, jak zmiany cen w gospodarce. Wzrost cen tusz jagnięcych był z reguły dodatnio skorelowany ze wzrostem poziomu PKB na osobę. W przypadku pogłowia zależności były ujemne. Jedynym krajem, w którym występowały bardzo silne związki poziomu cen tusz jagnięcych z parametrami gospodarki były Niemcy.
Solutions of the Dispersionless Toda Hierarchy Constrained by String Equations
Creators: name: Alonso, Luis Martinez
name: Medina, Elena
Publisher: name: arXiv
Year: 2004
Subjects: subject: Exactly Solvable and Integrable Systems (nlin.SI)
subject: FOS: Physical sciences

description: Solutions of the Riemann-Hilbert problem implementing the twistorial structure of the dispersionless Toda (dToda) hierarchy are obtained. Two types of string equations are considered which characterize solutions arising in hodograph sectors and integrable structures of two-dimensional quantum gravity and Laplacian growth problems.
description: 23 pages
Savings and Investment Correlations in Response to Monetary Policy Shocks: New Insights into the Feldstein-Horioka Puzzle?: new insights into the Feldstein-Horioka puzzle?
Creators: name: Schmidt, Caroline
Publisher: name: ETH Zurich
Year: 2006
Subjects: Feldstein-Horioka Puzzle
Monetary Policy Shocks
MONETARY POLICY
SPARKASSEN + ERSPARNISSE (BANKWESEN)
Savings Investment Correlations
INVESTMENTS
SAVINGS BANKS + SAVING
Local-currency pricing
INVESTITIONEN
GELDPOLITIK
info:eu-repo/classification/ddc/330
Economics

description: KOF Working Papers, 144
Przemiany gospodarstw specjalizujących się w produkcji mleka w wybranych krajach Unii Europejskiej
Creators: name: Sadowski, Arkadiusz
name: Michalczak, Dagmara
name: Sadowski, Arkadiusz
name: Michalczak, Dagmara
Publisher: name: Unknown
Year: 2015
Subjects: subject: Agribusiness
subject: Agricultural and Food Policy
subject: International Relations/Trade
subject: Livestock Production/Industries
subject: Production Economics
subject: dairy farms
subject: structural changes
subject: economic results of farms
subject: the abolition of milk quotas
subject: /gospodarstwa mleczne
subject: przemiany strukturalne
subject: wyniki ekonomiczne gospodarstw rolnych
subject: zniesienie kwot mlecznych

description: The article presents the changes that have occurred in farms specializing in milk production in the EU countries selected because of the similarity of climate and a different economic history, including different periods of participation in the European Union. It has been demonstrated that in spite of the process of bridging the gap, the results of production and the economic situations of farms from the EU-12 still differ significantly from those which occur in the holdings of the older member states. This also applies to Poland, where an additional problem is the considerable fragmentation of holdings. / Synopsis. W artykule przedstawiono przemiany, jakie dokonały się w gospodarstwach specjalizujących się w produkcji mleka w krajach Unii Europejskiej, wybranych ze względu na względne podobieństwo klimatyczne i rolnicze oraz odmienną historię gospodarczą, w tym różny okres uczestnictwa w Unii Europejskiej. Wykazano, iż mimo procesu zmniejszania dystansu, wyniki produkcyjne oraz sytuacja ekonomiczna podmiotów z krajów UE-12 nadal znacząco odbiega od tej, jaka występuje w gospodarstwach ze starych krajów członkowskich. Dotyczy to także Polski, gdzie dodatkowym problemem jest duże rozdrobnienie gospodarstw.
Proton Decay: Flipped vs Unflipped SU(5)
Creators: name: Ellis, John
name: Garcia, Marcos A. G.
name: Nagata, Natsumi
name: Nanopoulos, Dimitri V.
name: Olive, Keith A.
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We analyze nucleon decay modes in a no-scale supersymmetric flipped SU(5) GUT model, and contrast them with the predictions for proton decays via dimension-6 operators in a standard unflipped supersymmetric SU(5) GUT model. We find that these GUT models make very different predictions for the ratios $Γ(p \to π^0 μ^+)/Γ(p \to π^0 e^+)$, $Γ(p \to π^+ \barν)/Γ(p \to π^0 e^+)$, $Γ(p \to K^0 e^+)/Γ(p \to π^0 e^+)$ and $Γ(p \to K^0 μ^+)/Γ(p \to π^0 μ^+)$, and that predictions for the ratios $Γ(p \to π^0 μ^+)/Γ(p \to π^0 e^+)$ and $Γ(p \to π^+ \barν)/Γ(p \to π^0 e^+)$ also differ in variants of the flipped SU(5) model with normal- or inverse-ordered light neutrino masses. Upcoming large neutrino experiments may have interesting opportunities to explore both GUT and flavour physics in proton and neutron decays.
description: 25 pages, 4 figures
title: Feasibility analysis of 'biogas for cooking' generation based on human waste aimed to low-income population in Colombia
Creators: name: Castro Torres, Diego Alexander
Publisher: name: TU Wien
Year: 2016
Subjects: subject: Renewable energy
subject: Human waste
subject: Biogas generation
subject: Social Innovation
subject: Developing countries

description: Bioenergy is generated through biofuels. These new ways to generate energy are essential for low carbon alternatives in the future on a global scale. Biogas has enough potential to supply electricity and other forms of energy to the world and are supporting pro-poor populations in developing countries like Latin America. Bioenergy has considerably greenhouse mitigation in long term. Nowadays there are several companies and organizations focused to generate Biogas based on cropping systems and besides animal waste and conversion systems together more than 80% emission reductions compared to conventional energy baseline. In this context, biofuels has a complexity into social aspects and environmental interactions, also has strong correlation with climate change and land use. In Latin countries the impact could be even bigger due to polarization in politics and lack of basic services as electricity and gas for cooking. Hence, tackling this issue would trigger in health, poverty and biodiversity aspects. As a consequence, many conflicts might be solved, reduced or at least mitigated, fostering collaboration among governmental institutions, private sector and communities. Learning factors how to use resources and being proactive with less do more, additional agricultural aspects would be point it out here. Good governance of land use could lead rural development and contribute as major fact to poverty reduction and creating smart communities, fostering employment generation and making them sustainable. Within bioenergy definition, there is room for generation of biogas based on human waste a low-use methodology in Latin countries and for delimitation of this document specifically in Colombia. Several applications of fecal waste could bring new ideas on the table in a developing country such as Colombia. The social, economic, environmental and sustainable aspects are key to following suit from develop countries like Germany for generation and commercialization of biogas from human waste.
Size dependence of the Tc and the superconducting energy gap in nanocrystalline thin films of Nb
Creators: name: Bose, Sangita
name: Raychaudhuri, Pratap
name: Banerjee, Rajarshi
name: Vasa, Parinda
name: Ayyub, Pushan
Publisher: name: arXiv
Year: 2004
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: In nanocrystalline Nb films, the superconducting Tc decreases with a reduction in the average particle size below 20nm. We correlate the decrease in Tc with a reduction in the superconducting energy gap measured by point contact spectroscopy. Consistent with the Anderson criterion, no superconducting transition was observed for sizes below 8 nm. We show that the size-dependence of the superconducting properties in this intermediate coupling Type II superconductor is governed by changes in the electronic density of states rather than by phonon softening.
description: pdf format 14 pages 4 figures (included)
Do Differences in Institutional and Legal Environments Explain Cross-Country Variations in IPO Underpricing?
Creators: name: Hopp, Christian
name: Axel Dreher
Publisher: name: ETH Zurich
Year: 2007
Subjects: GOING PUBLIC + INITIAL PUBLIC OFFERING (STOCK EXCHANGES)
IPO underpricing
Legal infrastructure
Institutions
Panel data
GOING PUBLIC + BÖRSENEINFÜHRUNG (BÖRSENWESEN)
info:eu-repo/classification/ddc/330
Economics

description: KOF Working Papers, 172
Quantum Geometry and Stabilization of Fractional Chern Insulators Far from the Ideal Limit
Creators: name: Shavit, Gal
name: Oreg, Yuval
Publisher: name: arXiv
Year: 2024
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: In the presence of strong electronic interactions, a partially filled Chern band may stabilize a fractional Chern insulator (FCI) state, the zero-field analog of the fractional quantum Hall phase. While FCIs have long been hypothesized, feasible solid-state realizations only recently emerged, largely due to the rise of moiré materials. In these systems, the quantum geometry of the electronic bands plays a critical role in stabilizing the FCI in the presence of competing correlated phases. In the limit of ``ideal'' quantum geometry, where the quantum geometry is identical to that of Landau levels, this role is well understood. However, in more realistic scenarios only empiric numerical evidence exists, accentuating the need for a clear understanding of the mechanism by which the FCI deteriorates moving further away from these ideal conditions. We introduce and analyze an anisotropic model of a $\left|C \right|=1$ Chern insulator, whereupon partial filling of its bands, an FCI phase is stabilized over a certain parameter regime. We incorporate strong electronic interaction analytically by employing a coupled-wires approach, studying the FCI stability and its relation to the the quantum metric. We identify an unusual anti-FCI phase benefiting from non-ideal geometry, generically subdominant to the FCI. However, its presence hinders the formation of FCI in favor of other competitive phases at fractional fillings, such as the charge density wave. Though quite peculiar, this anti-FCI phase may have already been observed in experiments at high magnetic fields. This establish a direct link between quantum geometry and FCI stability in a tractable model far from any ideal band conditions, and illuminates a unique mechanism of FCI deterioration.
description: Published version
Trying to Assess the Quality of Macroeconomic Data – the Case of Swiss Labour Productivity Growth as an Example
Creators: name: Hartwig, Jochen
Publisher: name: ETH Zurich
Year: 2007
Subjects: Labour productivity
Statistical artefacts
SWITZERLAND (CENTRAL EUROPE). SWISS CONFEDERATION
SCHWEIZ (MITTELEUROPA). SCHWEIZERISCHE EIDGENOSSENSCHAFT
MAKROÖKONOMIE
Accuracy of macroeconomic observations
ARBEITSPRODUKTIVITÄT
LABOUR PRODUCTIVITY
MACROECONOMICS
info:eu-repo/classification/ddc/330
Economics

description: KOF Working Papers, 173
Ceny detaliczne owoców w Polsce i w wybranych krajach europejskich
Creators: name: Sobczak, Wioleta
name: Jabłońska, Lilianna
name: Sobczak, Wioleta
name: Jabłońska, Lilianna
Publisher: name: Unknown
Year: 2015
Subjects: subject: Agribusiness
subject: Consumer/Household Economics
subject: Demand and Price Analysis
subject: Food Consumption/Nutrition/Food Safety
subject: International Relations/Trade
subject: retail prices
subject: fruit
subject: Poland
subject: European Union
subject: / ceny detaliczne
subject: owoce
subject: Polska
subject: Unia Europejska

description: In the paper a horizontal and vertical comparative analysis of retail prices of fruit in Poland and selected European countries was conducted. The differences in prices between countries against level of affluence differentiation, the dynamics of their changes in the selected countries and the price relationships of some fruits were also analyzed. The time series for the relative prices of horticultural products in the form of price indexes and the GDP per capita come from Eurostat, the Central Statistical Office and the publication of the Institute of Agricultural and Food Economics - National Research Institute. The study covered the years 2004-2012, ie after the Polish accession to the EU. Research has shown that on the European markets there is a decrease trend in fruit retail prices. Despite an overall decreasing trend prices of the two most common fruit species apples and pears in most European countries gradually increased each year. / Synopsis. W pracy dokonano poziomej oraz pionowej analizy porównawczej cen detalicznych owoców w Polsce oraz w wybranych krajach Unii Europejskie. Analizie poddano zmiany kierunku i dynamikę cen owoców ogółem, cen dwóch podstawowych gatunków, tzn. jabłek i gruszek, a także zmiany dochodu rozporządzalnego gospodarstw domowych przypadającego na 1 mieszkańca. Szeregi czasowe dotyczące relatywnych i absolutnych cen produktów ogrodniczych w postaci indeksów cen i wartości dochodu rozporządzalnego gospodarstw domowych przypadającego na jednego mieszkańca pochodzą z Eurostatu, Głównego Urzędu Statystycznego oraz publikacji Instytutu Ekonomiki Rolnictwa i Gospodarki Żywnościowej-Państwowy Instytut Badawczy. Okres badawczy obejmuje lata 2005-2014. Badania wykazały, że na większości europejskich rynkach występuje tendencja spadkowa cen detalicznych owoców i zmniejsza się stopniowo ich zróżnicowanie między krajami. Pomimo ogólnej tendencji spadkowej ceny dwóch najpowszechniejszych gatunków owoców mianowicie jabłek oraz gruszek w większości krajów europejskich corocznie sukcesywnie wzrastały. Sytuacja polskiego konsumenta tych gatunków nie uległa widocznej zmianie w stosunku do konsumenta w Niemczech, pomimo wzrosty poziomu zamożności.
Gene family amplification facilitates adaptation in freshwater Unionid bivalve Megalonaias nervosa
Creators: name: Rogers, Rebekah L.
name: Grizzard, Stephanie L.
name: Titus-McQuillan, James E.
name: Bockrath, Katherine
name: Patel, Sagar
name: Wares, John P.
name: Garner, Jeffrey T.
name: Moore, Cathy C.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Genomics (q-bio.GN)
subject: Populations and Evolution (q-bio.PE)
subject: FOS: Biological sciences

description: As organisms are faced with intense rapidly changing selective pressures, new genetic material is required to facilitate adaptation. Among sources of genetic novelty, gene duplications and transposable elements (TEs) offer new genes or new regulatory patterns that can facilitate evolutionary change. With advances in genome sequencing it is possible to gain a broader view of how gene family proliferation and TE content evolve in non-model species when populations become threatened. Freshwater bivalves (Unionidae) currently face severe anthropogenic challenges. Over 70% of species in the United States are threatened, endangered or extinct due to pollution, damming of waterways, and overfishing. We have created a reference genome for M. nervosa to determine how genome content has evolved in the face of these widespread environmental challenges. We observe a burst of recent transposable element proliferation causing a 382 Mb expansion in genome content. Gene family expansion is common, with a duplication rate of 1.16 x 10^-8 per gene per generation. Cytochrome P450, ABC transporters, Hsp70 genes, von Willebrand proteins, chitin metabolism genes, mitochondria eating proteins, and opsin gene families have experienced significantly greater amplification and show signatures of selection. We use evolutionary theory to assess the relative contribution of SNPs and duplications in evolutionary change. Estimates suggest that gene family evolution may offer an exceptional substrate of genetic variation in M. nervosa, with Psgv=0.185 compared with Psgv=0.067 for single nucleotide changes. Hence, we suggest that gene family evolution is a source of "hopeful monsters" within the genome that facilitate adaptation.
description: Main text 42 pages, 1 table 8 figures; SI 12 pages, 8 tables, 2 figures; Gene tree phylogenies added to directly address incomplete lineage sorting
Ceny pieczarek w eksporcie z Polski i w eksporcie z Holandii
Creators: name: Zaremba, Łukasz
name: Zaremba, Łukasz
Publisher: name: Unknown
Year: 2015
Subjects: subject: Agribusiness
subject: Crop Production/Industries
subject: Demand and Price Analysis
subject: International Relations/Trade
subject: Research Methods/ Statistical Methods
subject: time series decomposition
subject: correlation
subject: seasonal fluctuation of prices
subject: convergence
subject: Law of One Price
subject: / dekompozycja szeregu czasowego
subject: korelacja
subject: wahania cykliczne cen
subject: konwergencja
subject: Prawo Jednej Ceny

description: Poland and The Netherlands are the biggest mushroom exporters on the EU market. In recent years, however, the importance of Polish exports country has been increasing, and that of The Netherlands diminishing. Analysis of export prices received by both countries showed that prices paid to the Dutch are much more stable than in Polish exports. At the same time, especially in Poland, seasonal fluctuations in prices of frozen mushrooms are higher in comparison to fresh mushrooms. According to the theory of price convergence and the Law of One Price, it is to be expected, that the levels of Polish export prices and The Netherlands should head in one direction. The analysis has not confirmed unequivocally that direction of changes. Moreover, in the case of frozen mushrooms there is an increase of price differentiation, which causes the divergence. / Synopsis. Polska i Holandia są największymi eksporterami pieczarek na rynku Unii Europejskiej, jednak w ostatnich latach znaczenie naszego kraju zwiększa się, a Holandii maleje. Analiza cen eksportowych uzyskiwanych przez oba kraje wykazała, że ceny płacone Holendrom są znacznie bardziej stabilne niż w eksporcie polskim. Przy czym, zwłaszcza w Polsce, sezonowe wahania cen mrożonek są wyższe niż grzybów świeżych. Zgodnie z teorią konwergencji cen i Prawem Jednej Ceny można się spodziewać, że poziomy cen eksportowych Polski i Holandii powinny dążyć do wyrównania. Przeprowadzona analiza nie potwierdziła jednoznacznie tego kierunku zmian. Co więcej w przypadku grzybów mrożonych dochodzi do zwiększenia zróżnicowania cen, czyli do dywergencji.
Optimal behavior of viscoelastic flow at resonant frequencies
Creators: name: Lambert, A. A.
name: Ibanez, G.
name: Cuevas, S.
name: del Rio, J. A.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: Classical Physics (physics.class-ph)
subject: FOS: Physical sciences

description: The global entropy generation rate in the zero-mean oscillatory flow of a Maxwell fluid in a pipe is analyzed with the aim at determining its behavior at resonant flow conditions. This quantity is calculated explicitly using the analytic expression for the velocity field and assuming isothermal conditions. The global entropy generation rate shows well-defined peaks at the resonant frequencies where the flow displays maximum velocities. It was found that resonant frequencies can be considered optimal in the sense that they maximize the power transmitted to the pulsating flow at the expense of maximum dissipation.
description: Paper accepted to be published in Phys. Rev. E
России царь самодержавный угас во цвете лет и сил»: образ Александра III в стихотворениях на его кончину (По материалам государственного архива российской Федерации)
Creators: name: Федор Ильич Мелентьев
Publisher: name: Русско-Византийский вестник
Year: 2020
Subjects: Александр III
Николай II
императрица Мария Федоровна
императрица Александра Федоровна
Петр I
А. Н. Майков
смерть императора
стихотворения

description: В статье анализируются посвященные смерти Александра III стихотворения, которые хранятся в фонде Николая II в Государственном архиве Российской Федерации. В этих стихотворениях отразился интерес общественности к известиям из Ливадии, были поэтически изложены воспоминания о правлении Александра III, а он сам сравнивался с другими царями, причем авторы стихотворений прибегали к сакрализации образа монарха. Особое место в этих произведениях занимали образы Николая II, его невесты и матери, а также образ скорбящей России. Стихотворения не отражали всего спектра общественной реакции на смерть Александра III, но являются важными источниками для понимания того, как формировался образ умершего царя.
Changing higher education - one step at a time
Creators: name: Bolander Laksov, Klara
Publisher: name: Stockholm University Open Educational Resources
Year: 2021
Subjects: subject: 130103 Higher Education
subject: FOS: Educational sciences

description: This is a presentation that was made for the ISSOTL conference in 2013 in Raleigh, USA. The topic was 'Changing higher education', and the presentation includes an account of different approaches to doing that. Examples from my own research was given (Bolander 2006; Bolander Laksov et al 2008), and the point is made that if we are to change higher education, we need to work in collaboration with educational leadership. The work is also presented in my PhD thesis.
Additional file 1 of Interaction between NSMCE4A and GPS1 links the SMC5/6 complex to the COP9 signalosome
Creators: name: Horváth, András
name: Rona, Gergely
name: Pagano, Michele
name: Jordan, Philip W.
Publisher: name: figshare
Year: 2020
Subjects: subject: Genetics
subject: FOS: Biological sciences

description: Additional file 1: Figure S1. Colocalization between CSN and SMC5/6 components. (A) Co-localization of NSMCE4A and CSN5 in HeLa cells. (B) Relationship between the nucleocytoplasmic ratio of CSN5 and that of NSMCE4A. The plot indicates that the lower nucleocytoplasmic ratio of CSN5 corresponds to lower nucleocytoplasmic ratio of NSMCE4A. Pearson correlation coefficient: 0.718. (C-J) Colocalization of NSMCE1 with CSN1 (C), CSN2 (D), CSN3 (E), CSN4 (F), CSN5 (G), CSN6 (H), CSN7 (I), and CSN8 (J). (K-M) siRNA-mediated depletion of GPS1 does not affect the nucleocytoplasmic ratio or localization of NSMCE4A. (K and L) Representative images of siRNA control (siCTR) and siRNA-mediated depletion of GPS1 immunostained for NSMCE4A and GPS1. (M) The plot indicates that GPS1 siRNA treatment did not alter the nucleocytoplasmic distribution of NSMCE4A. (N and O) Treatment with CSN5i-3 does not affect the nucleocytoplasmic ratio of NSMCE4A. (N) representative images of cells untreated (NT) or treated with CSN5i-3 and immunostained for NSMCE4A and GPS1. (O) The plot indicates that CSN5i-3 (CSNi) treatment did not alter the nucleocytoplasmic distribution of NSMCE4A. Size bars = 10 μm
Aggregating partial, local evaluations to achieve global ranking
Creators: name: Laureti, Paolo
name: Moret, Lionel
name: Zhang, Yi-Cheng
Publisher: name: arXiv
Year: 2004
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: FOS: Physical sciences

description: We analyze some voting models mimicking online evaluation systems intended to reduce the information overload. The minimum number of operations needed for a system to be effective is analytically estimated. When herding effects are present, linear preferential attachment marks a transition between trustful and biased reputations.
description: 9 pages, 5 figures, accepted for publication in Physica A
Dark matter annihilation in $ω$ Centauri: Astrophysical implications derived from the MWA radio data
Creators: name: Kar, Arpan
name: Mukhopadhyaya, Biswarup
name: Tingay, Steven
name: McKinley, Ben
name: Haverkorn, Marijke
name: McSweeney, Sam
name: Hurley-Walker, Natasha
name: Mitra, Sourav
name: Choudhury, Tirthankar Roy
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We present an analysis of Murchison Widefield Array radio telescope data from $ω$ Cen, possibly a stripped dwarf spheroidal galaxy core captured by our Galaxy. Recent interpretations of Fermi-LAT $γ$-ray data by Brown {\it et al.} (2019) and Reynoso-Cordova {\it et al.} (2019) suggest that $ω$ Cen may contain significant Dark Matter. We utilise their best-fit Dark Matter annihilation models, and an estimate of the magnetic field strength in $ω$ Cen, to calculate the expected radio synchrotron signal from annihilation, and show that one can usefully rule out significant parts of the magnetic field - diffusion coefficient plane using our current observational limits on the radio emission. Improvement by a factor of 10-100 on these limits could constrain the models even more tightly.
description: Accepted in Physics of the Dark Universe, 7 pages, 4 figures, 1 table
Disentangling the development of collective flow in high energy proton proton collisions with a multiphase transport model
Creators: name: Zheng, Liang
name: Liu, Lian
name: Lin, Zi-Wei
name: Shou, Qi-Ye
name: Yin, Zhong-Bao
Publisher: name: arXiv
Year: 2024
Subjects: subject: Nuclear Theory (nucl-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: In this work, we investigate the collective flow development in high energy proton proton (pp) collisions with a multiphase transport model (AMPT) based on PYTHIA8 initial conditions with a sub-nucleon structure. It is found that the PYTHIA8 based AMPT model can reasonably describe both the charged hadron productions and elliptic flow experimental data measured in pp collisions at $\sqrt{s}=13$ TeV. By turning on the parton and hadron rescatterings in AMPT separately, we find that the observed collective flow in pp collisions is largely developed during the parton evolution, while no significant flow effect can be generated with the pure hadronic rescatterings. It is also shown that the parton escape mechanism is important for describing both the magnitude of the two-particle cumulant and the sign of the four-particle cumulants. We emphasize that the strong mass ordering of the elliptic flow results from the coalescence process in the transport model and can thus be regarded as unique evidence related to the creation of deconfined parton matter in high energy pp collisions.
Additional file 3 of The full spectrum of ethical issues in dementia research: findings of a systematic qualitative review
Creators: name: Götzelmann, Tim G.
name: Strech, Daniel
name: Kahrass, Hannes
Publisher: name: figshare
Year: 2021
Subjects: subject: Medicine
subject: Genetics
subject: FOS: Biological sciences
subject: Neuroscience
subject: Biotechnology
subject: Cancer
subject: Science Policy
subject: 110309 Infectious Diseases
subject: FOS: Health sciences

description: Additional file 3. Table S3: All principles, issues and text examples in one table.
Black Hole Evaporation in Hořava-Lifshitz Gravity
Creators: name: Xu, Hao
name: Ong, Yen Chin
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: Hořava-Lifshitz (HL) gravity was formulated in hope of solving the non-renormalization problem in Einstein gravity and the ghost problem in higher derivative gravity theories by violating Lorentz invariance. In this work we consider the spherically symmetric neutral AdS black hole evaporation process in HL gravity in various spacetime dimensions $d$, and with detailed balance violation parameter $0\leqslant ε^2\leqslant 1$. We find that the lifetime of the black holes under Hawking evaporation is dimensional dependent, with $d=4,5$ behave differently from $d\geqslant 6$. For the case of $ε=0$, in $d=4,5$, the black hole admits zero temperature state, and the lifetime of the black hole is always infinite. This phenomenon obeys the third law of black hole thermodynamics, and implies that the black holes become an effective remnant towards the end of the evaporation. As $d\geqslant 6$, however, the lifetime of black hole does not diverge with any initial black hole mass, and it is bounded by a time of the order of $\ell^{d-1}$, similar to the case of Schwarzschild-AdS in Einstein gravity (which corresponds to $ε^2=1$), though for the latter this holds for all $d\geqslant 4$. The case of $0
description: 16 pages,9 figures;v2: discussion and numerical examples added in sec.3.3, references added, minor corrections, accepted by EPJC
From negative to positive : B.A. Haldane, nineteenth century Tsimshian photographer
Creators: name: Askren, Mique̕ L Icesis
Publisher: name: University of British Columbia
Year: 2010

description: Metlakatla, Alaska, was established in 1887 by eight hundred and twenty-three Tsimshian people who, under the guidance of lay missionary, William Duncan, migrated from British Columbia in quest of government-sanctioned land rights and the liberty to follow nondenominational Christianity. Through a strategic dissemination of texts and images by Duncan and his supporters, such as Henry Wellcome, Metlakatla was positioned as the epitome of "successful assimilation" of Indigenous people into the wider colonial project. Today, this depiction continues to be the dominant representation of Metlakatla in the literature on the Northwest Coast. I am a direct descendant of the Tsimshians who founded Metlakatla. Based on my life experiences and our oral history, I believe that this colonial narrative, which depicts our conversion to Christianity as a complete rejection of our cultural traditions, has been socially detrimental to our community, by excising our stories of resistance and cultural continuity from written accounts of our history. The primary objective of my thesis is to challenge and disrupt this colonial narrative by bringing to light a counter-narrative that was captured through the life and photographic lens of one of our people, Benjamin Alfred (B.A.) Haldane (1874-1941). Having opened a portrait studio in Metlakatla in 1899, Haldane became the first professional Native photographer on the Northwest Coast. Few publications, however, discuss his work and none explore his life and career extensively. This thesis not only provides the first in-depth analysis of Haldane’s photography but it also documents a counter-narrative which until now has only existed in our oral history. Through archival and community-based research into Haldane’s life, as well as the lives of some of the people he photographed, such as Sidney Campbell and Joseph Hayward, I complicate assimilationist paradigms that are prevalent in the study of the Northwest Coast First Nations. By framing Haldane’s practice as performing strategic acts of "photographic sovereignty", as defined by Navajo photographer Hulleah Tsinhnahjinne (2003), this thesis demonstrates the complex and subversive ways in which photography was used by Haldane and other Tsimshian people in Metlakatla, who incorporated it into our cultural practices, as a significant means of resisting colonial authority.
NLO QCD corrections to $B_c$-pair production in photon-photon collision
Creators: name: Chen, Zi-Qiang
name: Yang, Hao
name: Qiao, Cong-Feng
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The $B_c$ meson pair, including pairs of both pseudoscalar states and vector states, productions in high energy photon-photon interaction are investigated at the next-to-leading order (NLO) accuracy in the nonrelativistic quantum chromodynamics (NRQCD) factorization formalism. The corresponding cross sections at the future $e^+e^-$ colliders with $\sqrt{s}=250$ GeV and $500$ GeV are evaluated. Numerical result indicates that the inclusion of the NLO corrections shall greatly suppress the scale dependence and enhance the prediction reliability. In addition to the phenomenological meaning, the NLO QCD calculation of this process subjects to certain technical issues, which are elucidated in details and might be applicable to other relevant investigations.
description: Version accepted for publication in Physical Review D
The First Cosmic Structures and their Effects
Creators: name: Ciardi, Benedetta
name: Ferrara, Andrea
Publisher: name: arXiv
Year: 2004
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Despite much recent theoretical and observational progress in our knowledge of the early universe, many fundamental questions remain only partially answered. Here, we review the latest achievements and persisting problems in the understanding of first cosmic structure formation.
description: 130 pages, 40 figures. Updated version of the review appeared in 2005, Space Science Reviews, 116, 625. In this submission, several figures were compressed, resulting in a reduction in quality. A postscript file with the full figures is available at http://www.mpa-garching.mpg.de/~ciardi/download.html
Non-abelian black strings
Creators: name: Hartmann, Betti
Publisher: name: arXiv
Year: 2004
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: Non-abelian black strings in a 5-dimensional Einstein-Yang-Mills model are considered. The solutions are spherically symmetric non-abelian black holes in 4 dimensions extended into an extra dimension and thus possess horizon topology S^2 x R. We find that several branches of solutions exist. In addition, we determine the domain of existence of the non-abelian black strings.
description: 9 pages; 4 eps figures; typos corrected; references added, some details clarified
Essays on Currency Internationalization and Exchange Rate Regime Choice - Empirical Evidence from Asia and Europe
Creators: name: Grimm, Louisa
Publisher: name: Universität Osnabrück
Year: 2024
Subjects: subject: FX turnover
subject: Geographical trading pattern
subject: Renminbi internationalization
subject: Dispute
subject: Trade intensity
subject: Codependent business cycles
subject: Serial correlation common feature
subject: European monetary integration
subject: Seasonality
subject: Optimum currency area
subject: Exchange rate regime choice
subject: 330 - Wirtschaft

description: This dissertation is a collection of three essays on the internationalization of currencies and the choice of exchange rate regimes, focusing on the Chinese renminbi (RMB) and the euro. It adds to the literature with empirical results, institutional analyses, and methodological elaborations. The first part of the study, we investigate the evolution of offshore RMB trading between 2016 and 2019. We find some convergence with the geographical distribution pattern of major currencies in international financial markets, but it is strongly influenced by (geopolitical) disputes and trading intensity. In addition, during the period under consideration, policy measures and the characteristics of financial centers played a role in shaping the offshore RMB trading pattern. The analysis is also conducted for the euro and reveals evidence for convergence in the first years after its introduction. The determinants of euro trading are not stable over time but include links between the eurozone and offshore trading centers and the economic and institutional characteristics of these centers. The second part incorporates two essays on exchange rate regime choice. A key policy criterion identified in the literature to evaluate optimal currency areas is the co-movement of business cycle shocks. However, we show that a currency area is optimal and a common monetary policy is suitable for all members only if, in addition, there is also a common impulse response pattern over time. The serial correlation common features test is the appropriate testing procedure for this, and we provide a theoretical underpinning for empirical studies that have used this test to evaluate common currency areas. In our empirical analysis, we account for seasonality in GDP data and jointly model common cycles and common seasonal factors. First, we consider countries potentially acceding to the European Monetary Union and find no evidence for a common cyclical reaction pattern with the euro area aggregate, except for Sweden. Second, we contribute to the literature discussing various types of new currency arrangements around the RMB, up to and including fixed exchange rates in an RMB currency bloc. The background is that the RMB increasingly challenges the dominant role of the U.S. dollar in the East Asian region, and relations with China are becoming closer. Despite these conditions, the results do not reveal common synchronous cycles, but show few common cyclical elements for Korea, Hong Kong, and Taiwan, which is in contrast to previous studies.
Quantum transport through a deformable molecular transistor
Creators: name: Cornaglia, P. S.
name: Grempel, D. R.
name: Ness, H.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: The linear transport properties of a model molecular transistor with electron-electron and electron-phonon interactions were investigated analytically and numerically. The model takes into account phonon modulation of the electronic energy levels and of the tunnelling barrier between the molecule and the electrodes. When both effects are present they lead to asymmetries in the dependence of the conductance on gate voltage. The Kondo effect is observed in the presence of electron-phonon interactions. There are important qualitative differences between the cases of weak and strong coupling. In the first case the standard Kondo effect driven by spin fluctuations occurs. In the second case, it is driven by charge fluctuations. The Fermi-liquid relation between the spectral density of the molecule and its charge is altered by electron-phonon interactions. Remarkably, the relation between the zero-temperature conductance and the charge remains unchanged. Therefore, there is perfect transmission in all regimes whenever the average number of electrons in the molecule is an odd integer.
description: 9 pages, 6 figures
Streaming Instability with Multiple Dust Species: I. Favourable Conditions for the Linear Growth
Creators: name: Zhu, Zhaohuan
name: Yang, Chao-Chin
Publisher: name: arXiv
Year: 2020
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: Recent study suggests that the streaming instability, one of the leading mechanisms for driving the formation of planetesimals, may not be as efficient as previously thought. Under some disc conditions, the growth timescale of the instability can be longer than the disc lifetime when multiple dust species are considered. To further explore this finding, we use both linear analysis and direct numerical simulations with gas fluid and dust particles to mutually validate and study the unstable modes of the instability in more detail. We extend the previously studied parameter space by one order of magnitude in both the range of the dust-size distribution $[T_{s,min}, T_{s,max}]$ and the total solid-to-gas mass ratio $\varepsilon$ and introduce a third dimension with the slope $q$ of the size distribution. We find that the fast-growth regime and the slow-growth regime are distinctly separated in the $\varepsilon$-$T_{s,max}$ space, while this boundary is not appreciably sensitive to $q$ or $T_{s,min}$. With a wide range of dust sizes present in the disc (e.g. $T_{s,min}\lesssim10^{-3}$), the growth rate in the slow-growth regime decreases as more dust species are considered. With a narrow range of dust sizes (e.g. $T_{s,max}/T_{s,min}=5$), on the other hand, the growth rate in most of the $\varepsilon$-$T_{s,max}$ space is converged with increasing dust species, but the fast and the slow growth regimes remain clearly separated. Moreover, it is not necessary that the largest dust species dominate the growth of the unstable modes, and the smaller dust species can affect the growth rate in a complicated way. In any case, we find that the fast-growth regime is bounded by $\varepsilon\gtrsim 1$ or $T_{s,max}\gtrsim 1$, which may represent the favourable conditions for planetesimal formation.
description: Version after the first referee report, 18 pages, 14 figures, submitted to MNRAS
Does Using Bazel Help Speed Up Continuous Integration Builds?
Creators: name: Zheng, Shenyu
name: Adams, Bram
name: Hassan, Ahmed E.
Publisher: name: arXiv
Year: 2024
Subjects: subject: Software Engineering (cs.SE)
subject: FOS: Computer and information sciences

description: A long continuous integration (CI) build forces developers to wait for CI feedback before starting subsequent development activities, leading to time wasted. In addition to a variety of build scheduling and test selection heuristics studied in the past, new artifact-based build technologies like Bazel have built-in support for advanced performance optimizations such as parallel build and incremental build (caching of build results). However, little is known about the extent to which new build technologies like Bazel deliver on their promised benefits, especially for long-build duration projects.
 In this study, we collected 383 Bazel projects from GitHub, then studied their parallel and incremental build usage of Bazel in 4 popular CI services, and compared the results with Maven projects. We conducted 3,500 experiments on 383 Bazel projects and analyzed the build logs of a subset of 70 buildable projects to evaluate the performance impact of Bazel's parallel builds. Additionally, we performed 102,232 experiments on the 70 buildable projects' last 100 commits to evaluate Bazel's incremental build performance. Our results show that 31.23% of Bazel projects adopt a CI service but do not use Bazel in the CI service, while for those who do use Bazel in CI, 27.76% of them use other tools to facilitate Bazel's execution. Compared to sequential builds, the median speedups for long-build duration projects are 2.00x, 3.84x, 7.36x, and 12.80x, at parallelism degrees 2, 4, 8, and 16, respectively, even though, compared to a clean build, applying incremental build achieves a median speedup of 4.22x (with a build system tool-independent CI cache) and 4.71x (with a build system tool-specific cache) for long-build duration projects. Our results provide guidance for developers to improve the usage of Bazel in their projects.
Additional file 1 of Association of Myopia with cognitive function among one million adolescents
Creators: name: Megreli, Jacob
name: Adiel Barak
name: Bez, Maxim
name: Bez, Dana
name: Levine, Hagai
Publisher: name: figshare
Year: 2020
Subjects: subject: Neuroscience
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: Science Policy
subject: 111714 Mental Health
subject: FOS: Health sciences

description: Additional file 1: eTable 1. Myopia prevalence by year of examination, univariable logistic regression analysis. eTable 2. Cognitive function assessment subtests and association with myopia in univariable and multivariable models. eTable 3. Association of cognitive function score (CFS) with myopia among males and females in multivariable models. eTable 4. Association of cognitive function score (CFS) with myopia with stratification for years of education in multivariable models. eFigure 1. Sensitivity analysis of the association of cognitive function score (CFS) with stricter definition of myopia (
The D0 Silicon Track Trigger
Creators: name: Sonnenschein, Lars
Publisher: name: arXiv
Year: 2004
Subjects: subject: Instrumentation and Detectors (physics.ins-det)
subject: FOS: Physical sciences

description: The Level-2 Silicon Track Trigger preprocessor (L2 STT) of the D0 detector in Run II is described. It performs a precise reconstruction of charged particle tracks in the Central Fiber Tracker (CFT) and the Silicon Microstrip Tracker (SMT). Events with displaced tracks originating from the decay of long living particles such as B hadrons are triggered on. The presence of b quarks contained in such hadrons is relevant for B physics and crucial as signature of top quark and Higgs boson decays.
description: Invited talk at the XXIV Physics in Collisions Conference (PIC04), Boston, USA, June 2004, 4 pages, LaTeX, 5 eps figures. PSN MONP10
Additional file 1 of Psychometric properties of the social interaction anxiety scale and the social phobia scale in Hungarian adults and adolescents
Creators: name: Andras N. Zsido
name: Varadi-Borbas, Brigitta
name: Arato, Nikolett
Publisher: name: figshare
Year: 2021
Subjects: subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: Science Policy

description: Additional file 1: Supplementary Material 1. The Hungarian version of the SIAS-6 and SPS-6 scales.
BEZPIECZEŃSTWO ŻYWNOŚCIOWE Z PERSPEKTYWY KRAJÓW SŁABO I WYSOKO ROZWINIĘTYCH
Creators: name: Kraciuk, Jakub
name: Kraciuk, Jakub
Publisher: name: Unknown
Year: 2015
Subjects: subject: Agribusiness
subject: Food Consumption/Nutrition/Food Safety
subject: global food security
subject: globalisation
subject: less and highly developed countries

description: The purpose of the article was to show the state of food security of countries with different levels of income and representation of factors affecting this security. It was found that the greatest factor limiting the level of food security is insufficient level of price affordability while less important is access to food. The disproportion in terms of food security between the richest and poorest countries is large, but in recent years is reduced.