cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Możliwości rozwoju rolnictwa unijnego w wyniku zmian Wspólnej Polityki Rolnej po 2013 roku
Creators: name: Grochowska, Renata
name: Grochowska, Renata
Publisher: name: Unknown
Year: 2012
Subjects: subject: Agribusiness
subject: Agricultural and Food Policy
subject: Agricultural Finance
subject: Political Economy
subject: agricultural policy
subject: EU agriculture
subject: / polityka rolna
subject: rolnictwo w UE

description: Effects of changes in the Common Agricultural Policy (CAP) beyond 2013 and their impact on the position of EU agriculture in global markets ares discussed. The key questionarises as to whether the next CAP reform can support development of the EU agriculture in the long-term perspective. It was concluded that a pressure of current challenges, such as the economic crisis and the deficit of public finances, has shaped last proposals of the European Commission regarding the future of CAP. Thus, it is of interest to explore the possible new solutions in the CAP towards targeting the policy to specific programmes and beneficiaries. Instruments of crisis management as well as those of research & development seem to be the most preferable for the EU agriculture in the long-term perspective. / Synopsis. Przeprowadzono analizę kierunków zmian Wspólnej Polityki Rolnej (WPR), ze szczególnym uwzględnieniem propozycji Komisji Europejskiej z 2011 roku, oraz ich wpływu na pozycję rolnictwa unijnego na rynkach globalnych w nadchodzących latach. Stwierdzono, że planowane reformy WPR po 2013 roku nie sprzyjają wzmocnieniu rolnictwa unijnego w perspektywie długookresowej. Koncentrują się bowiem na osiągnięciu celów krótkoterminowych, wynikających z kryzysowej sytuacji gospodarczej i finansowej wielu państw członkowskich Unii Europejskiej. Zdaniem autorki zmiany WPR powinny iść w kierunku redukcji płatności bezpośrednich na korzyść instrumentów skierowanych na określone programy i zdefiniowanych beneficjentów. Wśród nich wiodącą rolę należy przypisać instrumentom wspomagającym rolników w sytuacjach kryzysowych oraz zapewniającym wprowadzanie innowacyjnych rozwiązań do rolnictwa.
Canonical equivalence between massive spin 1 theories
Creators: name: Arias, Pio J.
name: Perez-Mosquera, Jean C.
Publisher: name: arXiv
Year: 2004
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: The model of Cremmer-Scherck and Proca are considered in dimensions greater than 3+1. It is obtained that the Proca model correspond to a gauged fixed version of the Cremmer-Scherck one, and we show their canonical equivalence.
description: Presented by J.C.Perez-Mosquera in the 2nd Venezuelan Congress of Physics, Cumana, Venezuela, 2000. Original LaTeX version 8 pp
Phantom Cosmology with Non-minimally Coupled Real Scalar Field
Creators: name: Sun, Zu-Yao
name: Shen, You-Gen
Publisher: name: arXiv
Year: 2004
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We find that the expansion of the universe is accelerating by analyzing the recent observation data of type $\textsc{I}a$ supernova(SN-Ia) .It indicates that the equation of state of the dark energy might be smaller than -1,which leads to the introduction of phantom models featured by its negative kinetic energy to account for the regime of equation of state parameter $w
description: 12 pages, 2 figures. Accepted for publication in Gen.Rel.Grav
Potencjał biomasy województwa zachodniopomorskiego w aspekcie wykorzystania do celów energetycznych
Creators: name: Jasiulewicz, Michał
name: Janiszewska, Dorota Agnieszka
name: Jasiulewicz, Michał
name: Janiszewska, Dorota Agnieszka
Publisher: name: Unknown
Year: 2012
Subjects: subject: Agribusiness
subject: Agricultural and Food Policy
subject: Resource /Energy Economics and Policy
subject: Zachodniopomorskie voivodeship
subject: biomass
subject: energy potential
subject: solid biofuels
subject: bioliquids
subject: biogas
subject: / województwo zachodniopomorskie
subject: biomasa
subject: potencjał energetyczny
subject: biopaliwa stałe
subject: biopaliwa gazowe

description: The article presents the potential of Zachodniopomorskie voivodeship in the field of acquiring biomass from various sources like energetic plants, municipal wastes, wood wastes and by-products of agricultural plant and animal production. Among all biomass types, the solid biomass has the largest share both in Poland and in the voivodeship itself. When comparing the current yield of biomass in Poland and the theoretical energy potential in the region, it has been shown that Western Pomerania possesses the best chances for producing vast amounts of biogas out of agriculturally originating biomass. Unfortunately, current effects are unsatisfactory due to the fact that there are only three biogas facilities working in the voivodeship. However, through investments into appropriate infrastructure and technology Zachodniopomorskie voivodeship could become the leader in production of energy originating from biomass. / Synopsis. W artykule przedstawiono potencjał Województwa zachodniopomorskiego w zakresie pozyskania biomasy z różnych źródeł, takich jak uprawy roślin energetycznych, odpady i ścieki komunalne, odpady drzewne oraz produkty uboczne upraw roślin oraz hodowli zwierząt w rolnictwie. Spośród wszystkich rodzajów biomasy największy udział zarówno w Polsce jaki i województwie stanowi biomasa stała. Dokonując porównania aktualnego pozyskania biomasy w Polsce z ogólnym potencjałem energetycznym regionu wykazano, iż Pomorze Zachodnie ma największe szanse na wytwarzanie znacznych ilości biogazu z biomasy pochodzenia rolniczego. Obecne efekty trudno uznać za zadawalające, ponieważ dotychczas w województwie działają 3 biogazownie rolnicze, jednak inwestując w odpowiednią infrastrukturę oraz technologię województwo zachodniopomorskie może stać się liderem w produkcji energii pochodzącej z biogazu.
Irreversible thermodynamical description of warm inflationary cosmological models
Creators: name: Harko, Tiberiu
name: Sheikhahmadi, Haidar
Publisher: name: arXiv
Year: 2020
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We investigate the interaction between scalar fields and radiation in the framework of warm inflationary models by using the irreversible thermodynamics of open systems with matter creation/annihilation. We consider the scalar fields and radiation as an interacting two component cosmological fluid in a homogeneous, spatially flat and isotropic Friedmann-Robertson-Walker (FRW) Universe. The thermodynamics of open systems as applied together with the gravitational field equations to the two component cosmological fluid leads to a generalization of the elementary scalar field-radiation interaction model, which is the theoretical basis of warm inflationary models, with the decay (creation) pressures explicitly considered as parts of the cosmological fluid energy-momentum tensor. Specific models describing coherently oscillating scalar waves, scalar fields with a constant potential, and scalar fields with a Higgs type potential are considered in detail. For each case exact and numerical solutions of the gravitational field equations with scalar field-radiation interaction are obtained, and they show the transition from an accelerating inflationary phase to a decelerating one. The theoretical predictions of the warm inflationary scenario with irreversible matter creation are also compared in detail with the Planck 2018 observational data, and constraints on the free parameters of the model are obtained.
description: 33 pages, 22 figures, accepted for publication in Physics of the Dark Universe
Systemy klasyfikacji mięsa wołowego w Polsce i w innych krajach a jego realna jakość
Creators: name: Konarska, Małgorzata
name: Guzek, Dominika
name: Głąbska, Dominika
name: Wierzbicka, Agnieszka
name: Konarska, Małgorzata
name: Guzek, Dominika
name: Głąbska, Dominika
name: Wierzbicka, Agnieszka
Publisher: name: Unknown
Year: 2012
Subjects: subject: Agribusiness
subject: Agricultural and Food Policy
subject: Food Consumption/Nutrition/Food Safety
subject: Food Security and Poverty
subject: International Relations/Trade
subject: beef
subject: classification
subject: quality
subject: marbling
subject: / mięso wołowe
subject: klasyfikacja
subject: jakość
subject: marmurkowatość

description: The aim of the article was to present systems of beef classification in the context of revenue from production of beef of high and repeatable quality, on the basis of literature data on beef carcass classification systems in the world and on the possibility of beef quality prediction within the system. The (S)EUROP system of the European Union that is applied in Poland was presented. It regards only the conformation class and fatness, so it does not give possibility to predict precisely the beef quality. In Australia, it is observed that in the sensory evaluation of beef quality the tenderness is responsible for 40% of the general quality. The content of intramuscular fat (marbling) is the factor influencing not only the tenderness, but also the meat taste and juiciness. Other presented systems of classification from USA, Japan and Australia are taking into account also the marbling level that results in better possibilities of beef sensory quality prediction. Consumers may pay more to buy beef characterized by specified quality class if it is guaranteed. / Synopsis. Celem pracy było przedstawienie systemów klasyfikacji mięsa wołowego w kontekście przychodu z produkcji mięsa o wysokiej i powtarzalnej jakości. Zakres obejmował analizę danych dotyczących systemów klasyfikacji tusz i możliwości prognozowania jakości mięsa w oparciu o tę klasyfikację. Przedstawiony został obowiązujący w Polsce wspólnotowy system klasyfikacji tusz wołowych (S)EUROP, który odnosi się do klas uformowania i otłuszczenia. Nie pozwala on na precyzyjne przewidywanie jakości mięsa. W Australii stwierdzono, że kruchość w sensorycznej ocenie mięsa wołowego odpowiada za 40% ogólnej oceny jakości. Zawartość tłuszczu śródmięśniowego (marmurkowatość), ma wpływ zarówno na kruchość mięsa, jak i smakowitość oraz soczystość. Dlatego zaprezentowano systemy klasyfikacji stosowane w USA, Japonii i Australii, w których do oceny jakości mięsa wołowego jest brany pod uwagę poziom marmurkowatości, co pozwala na lepsze przewidywanie jakości sensorycznej mięsa wołowego. Konsumenci na świecie są w stanie płacić więcej za mięso o określonej klasie jakości pod warunkiem jej gwarancji.
Spin Degree of Freedom in the nu =1 Bilayer Electron System Investigated via Nuclear Spin Relaxation
Creators: name: Kumada, N.
name: Muraki, K.
name: Hashimoto, K.
name: Hirayama, Y.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: The nuclear-spin-relaxation rate 1/T_1 has been measured in a bilayer electron system at and around total Landau level filling factor nu =1. The measured 1/T_1, which probes electron spin fluctuations, is found to increase gradually from the quantum Hall (QH) state at low fields through a phase transition to the compressible state at high fields. Furthermore, 1/T_1 in the QH state shows a small but noticeable increase away from nu =1. These results demonstrate that, as opposed to common assumption, the electron spin degree of freedom is completely frozen neither in the QH nor compressible states.
description: 5pages, 4 figures
title: Lighting off-grid communities using E-waste and glass
Creators: name: Laverde, Angela
Publisher: name: TU Wien
Year: 2017
Subjects: subject: Lighting
subject: E-waste
subject: LEDs
subject: DRE
subject: PAYG

description: The work for the execution of this thesis was guided by the motivation to understand the magnitude of the problem and the implications for people living in developing countries, who don't enjoy basic access to energy services. Bringing together the knowledge acquired in Renewable Energy Systems and the core competencies in Electronics Engineering, it was an understandable choice to investigate the possibility to design an electronic device, which would be able to respond to a basic need, lighting a bulb, in a practical, economical and eco-friendly way. The sense of one purpose should not be measured only by the results, as it is not because the results are not as hoped for, that the attempt was not worth the effort, as long as the underlying assumptions were sensible and testable. In the present case, in consideration of the properties of photosensitive semiconductor pn-junction, it was assumed that LEDs – as semiconductor light detectors – could generate enough power for lighting a light bulb. The series of tests performed by exposing various LEDs in different configurations to the sunlight, show that the current output is not sufficient to light a bulb but enough to trigger a circuit and therefore is not fit for the original purpose (providing light to left-aside off grid communities) but could still be developed further to give a second life to electronic waste.
Offsets between H-alpha and CO arms of a spiral galaxy NGC 4254: A New Method for Determining the Pattern Speed of Spiral Galaxies
Creators: name: Egusa, Fumi
name: Sofue, Yoshiaki
name: Nakanishi, Hiroyuki
Publisher: name: arXiv
Year: 2004
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We examined offsets between HII regions and molecular clouds belonging to spiral arms of a late type spiral galaxy NGC 4254 (M99). We used a high resolution CO(1-0) image obtained by Nobeyama Millimeter Array (NMA) and an H-alpha image. We derived angular offsets (theta) in the galactic disk, and found that these offsets show a linear dependence on the angular rotation velocity of gas (Omega_G). This linear relation can be expressed by an equation: theta =(Omega_G - Omega_P) * t_{H-alpha}, where Omega_P and t_{H-alpha} are constant. Here, Omega_P corresponds to the pattern speed of spiral arms and t_{H-alpha} is interpreted as the timescale between the peak compression of the molecular gas in spiral arms and the peak of massive star formation. We may thus determine Omega_P and t_{H-alpha} simultaneously by fitting a line to our theta - Omega_G plot, if we assumed they are constant. From our plot, we obtained t_{H-alpha} =4.8 (+/- 1.2) Myr and Omega_P = 26 (+10/-6) km/s/kpc, which are consistent with previous studies. We suggest that this theta - Omega_G plot can be a new tool to determine the pattern speed and the typical timescale needed for star formations.
description: Accepted by PASJ, 5 pages, 5 figures
title: Potential of using photovoltaic systems in Kurdistan region-Iraq
Creators: name: Aziz Baker, Hoshyar
Publisher: name: TU Wien
Year: 2017
Subjects: subject: Renewable Energy
subject: Kurdistan Region
subject: Photovoltaic Technology
subject: Utility Scale Solar Photovoltaics
subject: Photovoltaic Marketing Situation

description: The sun is consider as the main sources of energy. Using sun energy does not require complicated and costly technology. It can be used as a useful and energy source in most parts of the world. Also for countries which has not have enough non-renewable energy sources, using this energy can consider as the most suitable solution for development and economic growth. Despite of Kurdistan region has abundant non-renewable energy sources such as crude oil and natural gas and because of that mostly electricity generate with natural gas, and the Kurdistan economy is dominated by the oil and natural gas industry, fortunately, as Kurdistan is located in sunny belt and due to the intensity of the sun's radiation in most parts of the Kurdistan region, using Photovoltaic (PV) technology to generate electricity is economically feasible and It could have significant savings in gas and oil consumption. Reducing the environmental pollution and most importantly the storage of fossil fuels for future generations, are consider as the major reasons of using renewable energy sources particularly photovoltaic technology in the region. Using of PV technology is favorable but need to evaluate all technical and economic aspects in order to gain the most accurate results. This paper studies the economic and technical potentials of using PV technology in Kurdistan region especially large scale or utility-scale PV application. Ecological aspect are neglected as there is no proceeding any clear policy by the Kurdistan region government. PV marketing situation in Kurdistan is studied by finding the key barriers in way of PV marketing growth and SWOT (Strength-Weakness-Opportunity- Threats ) analysis has been done by address all strength, weakness, opportunity, and threats points. Some factors highlighted in order to take in consideration to improve the PV market in the region and to have an idea about public awareness, survey is done by distributing the questionnaire and the results are promising. Despite of using PV in Kurdistan is consider as very new technology and there is no any FIT(Feed-In-Tariff), ecological policy, government support, technical knowledge, but Kurdistan can consider as suitable market of PV in future and using this technology with current conditions are economical feasible. Thus, need to think more about using this technology in the region.
Modeling uncertainties in X-ray reflection spectroscopy measurements II: Impact of the radiation from the plunging region
Creators: name: Cardenas-Avendano, Alejandro
name: Zhou, Menglei
name: Bambi, Cosimo
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: X-ray reflection spectroscopy is a powerful tool to probe the strong gravity region around black holes, but the available relativistic reflection models have a number of simplifications that lead to systematic uncertainties (not fully under control) in the measurement of the properties of a source. In Paper I, we considered the case of an optically thin plunging region and we studied the impact of the radiation produced by the other side of the disk or circling the black hole one or more times. In the present paper, we discuss the case of an optically thick plunging region and we study the impact of the reflection spectrum of the plunging gas. We show that the contribution of such radiation is more important for low values of the black hole spin parameter and large values of the viewing angle, and it decreases significantly as the spin parameter increases and the inclination angle decreases. While the estimate of some parameters may be affected by the reflection spectrum of the plunging gas if this is not included in the theoretical model, we find that such radiation does not appreciably limit our capability of testing the Kerr black hole hypothesis.
description: 13 pages, 7 figures. v2: refereed version
title: The Emergence Of Irish Access Policy And Practice In The 1990s
Creators: name: Jordan, Anne T.
Publisher: name: The Open University
Year: 2002

description: The focus of this study is the provision of Access courses for Irish adults. This interest arose from the researcher's involvement with Access initiatives in one Irish higher education institution. The principal research questions investigate the development of the policies and practices associated with the Access movement in Ireland. The research begins from the theoretical, and narrows down to an examination of policies and perceptions, then to initiatives, and fmally to the experiences and voices of a small number of Access students. Action research methodology, selected as an appropriate approach for a practitioner working in the field, is used to investigate these questions. In attempting to answer the principal research questions, the study examines the defmitions and rationales for Access. This leads to a categorisation of such rationales in terms of equity, economic and social factors, and those connected with personal development. A comparative analysis of world-wide trends and EU educational policy and provision in a number of selected countries is next undertaken, prior to an examination of recent Irish Access policy. The comparative research report commissioned by the Irish government from Professor Skilbeck was not foreseen when this study began, but it is such an important recent influence on Irish policy that it is given serious consideration. The study moves from an examination of policy to that of practice. A national survey of Access course providers is carried out to show the extent and nature of Access provision. At a more local level, the outcomes for a selected group of Access students are examined, including the experiences of a small number of students from this group. From these a number of key issues arise and are considered. The answer to the research questions posed is that a conflation of economic investment in education; social cohesion strategies; membership of the EU; equity awareness, the 'Celtic Tiger' and an increased demand by adults for education are the forces driving Access in Ireland. Analysis of representations by one group, and reinforced by the survey of Access students show that students represent the least source of influence on Access policy and practice. The study demonstrates that education is now conceived as an 'absolute good', capable of tackling many ills in society. The research concludes with a SWOT analysis showing the strengths, weakness, opportunities and threats that arise in relation to the expansion of Access opportunities in Ireland. This is followed by a number of key points for practice and suggestions for further research.
Determining the Actual Local Density of Dark Matter Particles
Creators: name: Bourjaily, Jacob L.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Even if dark matter particles are unambiguously discovered in experiments, there is no clear reason to expect that the dark matter problem has been solved. It is very easy to provide examples of dark matter scenarios (e.g. in supersymmetric models) where nearly identical detector signals correspond to extremely different relic densities. Therefore, the density of the particles discovered must be determined before their cosmological relevance is established. In this talk, I will present a general method to estimate the local density of dark matter particles using both dark matter and hadron collider experimental data when it becomes available. These results were obtained in collaboration with Gordon Kane at the University of Michigan.
description: 9 pages, 4 figures. Talk given at the 42nd International School of Subnuclear Physics at Erice, Sicily, 30 August 2004
A panoply of quantum algorithms
Creators: name: Furrow, Bartholomew
Publisher: name: University of British Columbia
Year: 2010

description: This thesis’ aim is to explore improvements to, and applications of, a fundamental quantum algorithm invented by Grover. Grover’s algorithm is a basic tool that can be applied to a large number of problems in computer science, creating quantum algorithms that are polynomially faster than fastest known and fastest possible classical algorithms that solve the same problems. Our goal in this thesis is to make these techniques readily accessible to those without a strong background in quantum physics: we achieve this by providing a set of tools, each of which makes use of Grover’s algorithm or similar techniques, that can be used as subroutines in many quantum algorithms. The tools we provide are carefully constructed: they are easy to use, and they are asymptotically faster than the best tools previously available. The tools that we supersede include algorithms by Boyer, Brassard, Hoyer and Tapp, Buhrman, Cleve, de Witt and Zalka and Durr and Hoyer. After creating our tools, we create several new quantum algorithms, each of which is faster than the fastest known classical algorithm that accomplishes the same aim, and some of which are faster than the fastest possible classical algorithm. These algorithms come from graph theory, computational geometry and dynamic programming. We discuss a breadth-first search that is faster than (edges) (the classical limit) in a dense graph, maximum-points-on-a-line in (N3/2 lgN) (faster than the fastest classical algorithm known), as well as several other algorithms that are similarly illustrative of solutions in some class of problem. Through these new algorithms we illustrate the use of our tools, working to encourage their use and the study of quantum algorithms in general.
Scattering of compact kinks
Creators: name: Hahne, F. M.
name: Klimas, P.
Publisher: name: arXiv
Year: 2023
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We study the scattering processes of kink-antikink and kink-kink pairs in a field theory model with non-differentiable potential at its minima. The kink-antikink scattering includes cases of capture and escape of the soliton pair separated by a critical velocity, without windows of multi bounce followed by escape. Around the critical velocity, the behavior is fractal. The emission of radiation strongly influences the small velocity cases, with the most radiative cases being also the most chaotic. The radiation appears through the emission of compact oscillons and the formation of compact shockwaves. The kink-kink scattering happens elastically, with no emission of radiation. Some features of both the kink-antikink and the kink-kink scattering are explained using a collective coordinate model, even though the kink-kink case exhibits a null-vector problem.
description: 22 pages, 14 figures
A priori procedure to establish spinodal decomposition in alloys
Creators: name: Divilov, Simon
name: Eckert, Hagen
name: Toher, Cormac
name: Friedrich, Rico
name: Zettel, Adam C.
name: Brenner, Donald W.
name: Fahrenholtz, William G.
name: Wolfe, Douglas E.
name: Zurek, Eva
name: Maria, Jon-Paul
name: Hotz, Nico
name: Campilongo, Xiomara
name: Curtarolo, Stefano
Publisher: name: arXiv
Year: 2023
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Spinodal decomposition can improve a number of essential properties in materials, especially hardness. Yet, the theoretical prediction of the onset of this phenomenon (e.g., temperature) and its microstructure (e.g., wavelength) often requires input parameters coming from costly and time-consuming experimental efforts, hindering rational materials optimization. Here, we present a procedure where such parameters are not derived from experiments. First, we calculate the spinodal temperature by modeling nucleation in the solid solution while approaching the spinode boundary. Then, we compute the spinodal wavelength self-consistently using a few reasonable approximations. Our results show remarkable agreement with experiments and, for NiRh, the calculated yield strength due to spinodal microstructures surpasses even those of Ni-based superalloys. We believe that this procedure will accelerate the exploration of the complex materials experiencing spinodal decomposition, critical for their macroscopic properties.
description: 10 pages, 4 figures
The Projected Gross-Pitaevskii Equation for harmonically confined Bose gases
Creators: name: Blakie, P. Blair
name: Davis, Matthew J.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: We extend the Projected Gross Pitaevskii equation formalism of Davis et al. [Phys. Rev. Lett. \bf{87}, 160402 (2001)] to the experimentally relevant case of harmonic potentials. We outline a robust and accurate numerical scheme that can efficiently simulate this system. We apply this method to investigate the equilibrium properties of a harmonically trapped three-dimensional Bose gas at finite temperature, and consider the dependence of condensate fraction, position and momentum distributions, and density fluctuations on temperature. We apply the scheme to simulate an evaporative cooling process in which the preferential removal of high energy particles leads to the growth of a Bose-Einstein condensate. We show that a condensate fraction can be inferred during the dynamics even in this non-equilibrium situation.
description: 11 pages, 7 figures
Shaking photons from the vacuum: acceleration radiation from vibrating atoms
Creators: name: Dolan, Brian P.
name: Hunter-McCabe, Aonghus
name: Twamley, Jason
Publisher: name: arXiv
Year: 2020
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Acceleration radiation - or Unruh radiation - the thermal radiation observed by an ever accelerating observer or detector, although having similarities to Hawking radiation, so far has proved extremely challenging to observe experimentally. One recent suggestion is that, in the presence of a mirror, constant acceleration of an atom in its ground state can excite the atom while at the same time cause it to emit a photon in an Unruh-type process. In this work we show that merely by shaking the atom, in simple harmonic motion for example, can have the same effect. We calculate the transition rate for this in first order perturbation theory and consider harmonic motion of the atom in the presence of a stationary mirror, or within a cavity or just in empty vacuum. For the latter we propose a circuit-QED potential implementation that yields transition rates of $\sim 10^{-4}\,{\rm Hz}$, which may be detectable experimentally.
description: 10 pages, 3 figures. This is an author-created, un-copyedited version of an article published in New Journal of Physics. IOP Publishing Ltd is not responsible for any errors or omissions in this version of the manuscript or any version derived from it. This article is published under a CC BY licence. The Version of Record is available online at https://doi.org/10.1088/1367-2630/ab7bd5
Additional file 1 of Polish adaptation and validation of the hip disability and osteoarthritis outcome score (HOOS) in osteoarthritis patients undergoing total hip replacement
Creators: name: Gojło, Marek K.
name: Paradowski, Przemysław T.
Publisher: name: figshare
Year: 2020
Subjects: subject: Space Science
subject: Medicine
subject: Biotechnology
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: Science Policy

description: Additional file 1. Polish-adapted Hip disability and Osteoarthritis Outcome Score (HOOS).
Spożycie mięsa drobiowego w Polsce po integracji z Unią Europejską
Creators: name: Kosicka-Gębska, Małgorzata
name: Kosicka-Gębska, Małgorzata
Publisher: name: Unknown
Year: 2012
Subjects: subject: Agribusiness
subject: Food Consumption/Nutrition/Food Safety
subject: International Relations/Trade
subject: Livestock Production/Industries
subject: meat
subject: poultry meat
subject: production
subject: consumption
subject: export
subject: / mięso
subject: mięso drobiowe
subject: produkcja
subject: spożycie
subject: eksport

description: After the Polish accession to the EU, the Polish poultry market was incorporated into the common organization of poultry market in the Community and became a part of it. This integration has contributed to higher prices of poultry meat, but it also contributed to an increase in its consumption. Poultry meat is often chosen by consumers because of its lower price in comparison to beef or pork prices and its nutritional value. / Synopsis. Po akcesji do UE polski rynek drobiu został włączony do wspólnej organizacji rynku drobiarskiego Wspólnoty i stał się jego częścią. Integracja przyczyniła się z jednej strony do wzrostu cen drobiu, ale z drugiej strony wpłynęła na wzrost jego spożycia. Mięso drobiowe jest często wybierane przez konsumentów ze względu na niższą cenę, w porównaniu z wołowiną czy wieprzowiną, oraz posiadane walory odżywcze.
Ridge instability in dense suspensions caused by the second normal stress difference
Creators: name: Xiong, Zhongqiang
name: Angerman, Peter
name: Ellero, Marco
name: Sandnes, Bjornar
name: Seto, Ryohei
Publisher: name: arXiv
Year: 2023
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: A dense suspension of the cornstarch flowing on a very inclined wall finally forms some ridge-like patterns of the free surface. The onset of pattern formation is the primary target to elucidate the mechanism. In this work, based on the continuity of fluids and the force balance, we show that the flat free surface is unstable when the second normal stress difference $N_2$ is negatively proportional to shear stress and the gravity component perpendicular to the wall is weak enough. Such instability is inevitable to grow into a ridge-like surface profile oriented parallel to the flow direction. We use the instability criterion to predict the critical slope angle for the formation of ridge patterns. The estimated critical angle was found to be in agreement with experimental observations for a cornstarch suspension.
Enhancing Radiology Diagnosis through Convolutional Neural Networks for Computer Vision in Healthcare
Creators: name: K., Keshav Kumar
name: Narasimham, Dr N V S L
Publisher: name: arXiv
Year: 2023
Subjects: subject: Image and Video Processing (eess.IV)
subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Computer and information sciences

description: The transformative power of Convolutional Neural Networks (CNNs) in radiology diagnostics is examined in this study, with a focus on interpretability, effectiveness, and ethical issues. With an altered DenseNet architecture, the CNN performs admirably in terms of particularity, sensitivity, as well as accuracy. Its superiority over conventional methods is validated by comparative analyses, which highlight efficiency gains. Nonetheless, interpretability issues highlight the necessity of sophisticated methods in addition to continuous model improvement. Integration issues like interoperability and radiologists' training lead to suggestions for teamwork. Systematic consideration of the ethical implications is carried out, necessitating extensive frameworks. Refinement of architectures, interpretability, alongside ethical considerations need to be prioritized in future work for responsible CNN deployment in radiology diagnostics.
Variational Monte Carlo simulation with tensor networks of a pure $\mathbb{Z}_3$ gauge theory in (2+1)d
Creators: name: Emonts, Patrick
name: Bañuls, Mari Carmen
name: Cirac, J. Ignacio
name: Zohar, Erez
Publisher: name: arXiv
Year: 2020
Subjects: subject: Quantum Physics (quant-ph)
subject: High Energy Physics - Lattice (hep-lat)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Variational minimization of tensor network states enables the exploration of low energy states of lattice gauge theories. However, the exact numerical evaluation of high-dimensional tensor network states remains challenging in general. In [E. Zohar, J. I. Cirac, Phys. Rev. D 97, 034510 (2018)] it was shown how, by combining gauged Gaussian projected entangled pair states with a variational Monte Carlo procedure, it is possible to efficiently compute physical observables. In this paper we demonstrate how this approach can be used to investigate numerically the ground state of a lattice gauge theory. More concretely, we explicitly carry out the variational Monte Carlo procedure based on such contraction methods for a pure gauge Kogut-Susskind Hamiltonian with a $\mathbb{Z}_3$ gauge field in two spatial dimensions. This is a first proof of principle to the method, which provides an inherent way to increase the number of variational parameters and can be readily extended to systems with physical fermions.
description: 13 pages, 7 figures; v2: as published
Magnetic Excitations in U(Ru_{1-x}Rh_x)_2Si_2 (x<=0.03)
Creators: name: Yokoyama, M.
name: Amitsuka, H.
name: Itoh, S.
name: Kawasaki, I.
name: Tenya, K.
name: Yoshizawa, H.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We have investigated magnetic excitations for a mixed phase of hidden order (HO) and the antiferromagnetic (AF) order in U(Ru_{1-x}Rh_x)_2Si_2 (x <= 0.03) by means of inelastic neutron scattering. The inelastic peaks observed at Q=(1,0,0) and (1,0.4,0) in the HO phase for x=0 and 0.015 at 1.4 K are found to be strongly reduced in the AF dominant compositions of x=0.02 and 0.03. Similar behavior is observed as the HO is replaced by the AF order upon cooling for x=0.02. The x-T region in which the strong reduction of inelastic peaks is observed corresponds to the AF-rich region, indicating that the magnetic excitations typical for the HO-phase vanish in the AF phase.
description: 2 pages, 2 figures, to appear in the proceedings of SCES2004
Konsekwencje globalizacji dla rolnictwa europejskiego
Creators: name: Kowalczyk, Stanisław
name: Kowalczyk, Stanisław
Publisher: name: Unknown
Year: 2012
Subjects: subject: Agribusiness
subject: Agricultural and Food Policy
subject: International Relations/Trade
subject: globalization
subject: globalization of agribusiness
subject: specificity of globalization of agribusiness
subject: EU agriculture
subject: implications of globalization of agribusiness
subject: / globalizacja
subject: globalizacja agrobiznesu
subject: specyfika globalizacji agrobiznesu
subject: rolnictwo unijne
subject: konsekwencje globalizacji agrobiznesu

description: The study relates to current and controversial issues of globalization of agribusiness, in particular globalization of EU agriculture. Such issues as the scope and depth of globalization in the individual stages in agribusiness especially in agriculture, the specificity of this process in this sector, the impact of globalization on the EU agriculture and the possible consequences of this process are discussed. Processes so important to the future of EU agriculture, as the concentration in agribusiness, the processes of unification of law in the global system, migration of labour, unification of food consumption patterns, foreign investment in agribusiness and transmission of market signals are analyzed in terms of globalization. The paper ends with remarks on the possible consequences of globalization for agribusiness, and especially the EU agriculture. / Synopsis. Opracowanie poświęcone jest aktualnym i kontrowersyjnym zagadnieniom globalizacji agrobiznesu, w tym zwłaszcza jej konsekwencjom dla unijnego rolnictwa. Omówiono takie problemy jak zakres i głębokość procesów globalizacyjnych w poszczególnych ogniwach agrobiznesu, w tym szczególnie w rolnictwie, specyfikę tego procesu w tym sektorze gospodarki, skutki globalizacji dla rolnictwa unijnego oraz możliwe konsekwencje tego procesu. Analizie poddano tak istotne dla przyszłości rolnictwa UE procesy jak koncentracja podmiotowa, procesy unifikacji prawa w układzie globalnym, migracje siły roboczej, unifikacja modeli konsumpcji żywności, inwestycje zagraniczne w agrobiznesie oraz transmisja sygnałów rynkowych w warunkach globalizacji. Pracę kończą uwagi na temat możliwych skutków globalizacji dla agrobiznesu, a zwłaszcza dla rolnictwa unijnego.
Innowacyjność działań gospodarstw sadowniczych w regionie Grójca i Warki w aspekcie konkurencyjności regionu
Creators: name: Mazurkiewicz-Pizło, Anna
name: Mazurkiewicz-Pizło, Anna
Publisher: name: Unknown
Year: 2012
Subjects: subject: Agribusiness
subject: Agricultural and Food Policy
subject: Community/Rural/Urban Development
subject: Crop Production/Industries
subject: competitiveness of the region
subject: innovations
subject: orchard farm
subject: region
subject: / konkurencyjność regionów
subject: innowacyjność
subject: gospodarstwa sadownicze
subject: region Grójca i Warki

description: Author concentrates on the pro-innovative behaviour of orchard farm owners. Research was conducted in the Grójec and Warka region, which represents the highest concentration of orchards in Europe. The aim of article was a presentation of innovation tendencies among fruit growers in Warka and Grójec region and the cooperation between them. / Synopsis. W publikacji skoncentrowano się na proinnowacyjnych zachowaniach właścicieli gospodarstw sadowniczych. Badania dotyczyły regionu Grójca i Warki, gdyż tam właśnie występuje najwyższa w Europie koncentracja sadów. Celem artykułu jest prezentacja innowacyjności gospodarstw sadowniczych w regionie Grójca i Warki oraz działań mających na celu budowanie współpracy i poszukiwań nowych informacji mogących wpływać na usprawnienie i efektywność ich działań. Przeprowadzone badania wykazały, że aktywność, zarówno w zakresie wprowadzania innowacji, jak i w nawiązywaniu współpracy wzajemnie między sadownikami i między organizacjami branżowymi, jest niewielka, co w konsekwencji prowadzić może do osłabienia pozycji i znaczenia regionu Grójca i Warki jako potentata w produkcji owoców na świecie.
Spin readout of a CMOS quantum dot by gate reflectometry and spin-dependent tunnelling
Creators: name: Ciriano-Tejel, V. N.
name: Fogarty, M. A.
name: Schaal, S.
name: Hutin, L.
name: Bertrand, B.
name: Ibberson, Lisa
name: Gonzalez-Zalba, M. F.
name: Li, J.
name: Niquet, Y. -M.
name: Vinet, M.
name: Morton, J. J. L.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Silicon spin qubits are promising candidates for realising large scale quantum processors, benefitting from a magnetically quiet host material and the prospects of leveraging the mature silicon device fabrication industry. We report the measurement of an electron spin in a singly-occupied gate-defined quantum dot, fabricated using CMOS compatible processes at the 300 mm wafer scale. For readout, we employ spin-dependent tunneling combined with a low-footprint single-lead quantum dot charge sensor, measured using radiofrequency gate reflectometry. We demonstrate spin readout in two devices using this technique, obtaining valley splittings in the range 0.5-0.7 meV using excited state spectroscopy, and measure a maximum electron spin relaxation time ($T_1$) of $9 \pm 3$ s at 1 Tesla. These long lifetimes indicate the silicon nanowire geometry and fabrication processes employed here show a great deal of promise for qubit devices, while the spin-readout method demonstrated here is well-suited to a variety of scalable architectures.
description: 8 pages, 4 figures, 57 cites. v3: added acknowledges
INFRASTRUKTURA SPOŁECZNA JAKO CZYNNIK ZRÓWNOWAŻONEGO ROZWOJU OBSZARÓW WIEJSKICH
Creators: name: Dolata, Małgorzata
name: Dolata, Małgorzata
Publisher: name: Unknown
Year: 2014
Subjects: subject: Agribusiness
subject: social infrastructure
subject: sustainable development
subject: rural areas

description: Social infrastructure consists of a network of interconnected devices and institutions: education, culture, health care, tourism, physical culture, et al. They are performing specific social needs that usually are variable in time and they are growing qualitatively and quantitatively in the progressive economic development of state and its regions. Between social infrastructure and economic development are closely relationship, because infrastructure equipment determines the rate and level of development, and economic development determines the possibilities of the development of infrastructure. The functioning of the elements making up the social infrastructure also allows for the implementation of social policy in the field of formation of the living conditions and the creation of social and special order.
Generic example of algebraic bosonisation
Creators: name: Rožman, Katarina
name: Sunko, D. K.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Quantum Physics (quant-ph)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Two identical non-interacting fermions in a three-dimensional harmonic oscillator well are bosonised exactly according to a recently developed general algebraic scheme. Rotational invariance is taken into account within the scheme for the first time. The example is generic for the excitation spectra of finite systems, in particular for the appearance of bands in spectra. A connection to the formalism of the fractional quantum Hall effect is pointed out.
description: Author's original as published by EPJ Plus, six pages, one table
Automatic Speech Recognition with BERT and CTC Transformers: A Review
Creators: name: Djeffal, Noussaiba
name: Kheddar, Hamza
name: Addou, Djamel
name: Mazari, Ahmed Cherif
name: Himeur, Yassine
Publisher: name: arXiv
Year: 2024
Subjects: subject: Computation and Language (cs.CL)
subject: Audio and Speech Processing (eess.AS)
subject: FOS: Computer and information sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: This review paper provides a comprehensive analysis of recent advances in automatic speech recognition (ASR) with bidirectional encoder representations from transformers BERT and connectionist temporal classification (CTC) transformers. The paper first introduces the fundamental concepts of ASR and discusses the challenges associated with it. It then explains the architecture of BERT and CTC transformers and their potential applications in ASR. The paper reviews several studies that have used these models for speech recognition tasks and discusses the results obtained. Additionally, the paper highlights the limitations of these models and outlines potential areas for further research. All in all, this review provides valuable insights for researchers and practitioners who are interested in ASR with BERT and CTC transformers.
High degree of chaos synchronization in pairs of transverse modes with parity-symmetric polarizations in a thin-slice solid-state vector laser and application to polarimetric secure self-mixing metrology
Creators: name: Otsuka, Kenju
Publisher: name: arXiv
Year: 2020
Subjects: subject: Optics (physics.optics)
subject: Chaotic Dynamics (nlin.CD)
subject: FOS: Physical sciences

description: A high degree of chaos synchronization among transverse mode pairs with parity-symmetric polarizations was demonstrated in a laser-diode pumped thin-slice c-cut Nd: GdVO4 laser. The amplitude correlation coefficient greater than R > 0.994 resulted from a non-reversing mirror symmetric-polarization-dependent structural change in the modal patterns, where chaotic dynamics of the whole system consisting of qualitatively different dynamics, which depend on the polarization crossing angle, resembled that of a chaotic single mode laser. A self-organized sender-receiver type of chaos synchronization of a single pair of modes among an infinite number of parity-symmetric polarizations and the associated chaotic camouflaging as well as extracting experiment of a self-mixing solid-state laser Doppler velocimetry signal were demonstrated.
description: 5 pages, 6 figures
OCENA WPŁYWU PROCESÓW KONCENTRACJI CHOWU NA POPYT NA PASZE PRZEMYSŁOWE W ŻYWIENIU TRZODY CHLEWNEJ
Creators: name: Dzwonkowski, Wiesław
name: Dzwonkowski, Wiesław
Publisher: name: Unknown
Year: 2014
Subjects: subject: Agribusiness
subject: concentration
subject: pigs
subject: industrial feed mixes
subject: efficiency

description: The concentration of production in the swine sector results in an increase in demand for industrial feed mixes used for hog feeding. Concentration processes in Poland are not very well advanced and the average size of swine stock is several times lower the in other EU countries. Domestic use of industrial feed mixes per unit of livestock increases along rising scale of production but is still considerably below the level observed in the EU. Increasing use of industrial feed mixed results in a decline in their use per 1 kg of livestock produced, i.e. leads to an improvement in efficiency of production.