cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
The twilight years of pictorialism in Vancouver : the art photography of Percy Bentley during the Second World War
Creators: name: Monks, Christian Patrick
Publisher: name: University of British Columbia
Year: 2011

description: A period of photographic history that has remained relatively unexplored in Vancouver is art photography during the Second World War. This thesis partly redresses this historical gap by examining the pictorial photography of Percy Bentley, a well known commercial photographer who operated a studio, the Dominion Photo Company, in Vancouver for almost half a century. Among the photographs that the thesis concentrates on is Bentley's most successfully exhibited image, An Eastern Gateway, which made its debut in 1941. Why did an image of India, originally taken in 1924 when Bentley worked as the official photographer aboard a cruise ship on its maiden world tour voyage, make its appearance as a pictorial photograph 21 years later during the Second World War? During the Second World War, the government of the Dominion of Canada recognised the role that photography could play in the war; it created the National Film Board of Canada to use the power of film and photography to nurture support for the war. The wartime government also required art and professional photographers to avoid photographing or printing images of prohibited areas that might locate military and industrial sites. The response of pictorialists was to recognise the requests of the government and to adjust their photographic output accordingly. Thus, pictorialists, like Bentley, tended to produce edifying portraits of soldiers. Pictorialists aligned their views with those held by the state. While the documentary photography of the National Film Board of Canada was conscious of its ideological stance and its effort to encode public opinion, Bentley's pictorial photography was just as self-reflexive about reproducing a position which paralleled views held by Britain and its Dominions on the importance of keeping India within the Empire. During the war, India was being swept by a tide of nationalism that sought independence from the British Empire at the same time that its eastern boarder was being encroached upon by a rapidly advancing Japanese army. I argue that Bentley's image, An Eastern Gateway, was imperialistically biased. At a time of national turmoil, the photograph showed a moment from the past in which India is represented as protected by the British Raj and passive.
A versatile numerical approach for calculating the fracture toughness and R-curves of cellular materials
Creators: name: Hsieh, Meng-Ting
name: Deshpande, Vikram S.
name: Valdevit, Lorenzo
Publisher: name: arXiv
Year: 2020
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We develop a numerical methodology for the calculation of mode-I R-curves of brittle and elastoplastic lattice materials, and unveil the impact of lattice topology, relative density and constituent material behavior on the toughening response of 2D isotropic lattices. The approach is based on finite element calculations of the J-integral on a single-edge-notch-bend (SENB) specimen, with individual bars modeled as beams having a linear elastic or a power-law elasto-plastic constitutive behavior and a maximum strain-based damage model. Results for three 2D isotropic lattice topologies (triangular, hexagonal and kagome) and two constituent materials (representative of a brittle ceramic (silicon carbide) and a strain hardening elasto-plastic metal (titanium alloy)) are presented. We extract initial fracture toughness and R-curves for all lattices and show that (i) elastic brittle triangular lattices exhibit toughening (rising R-curve), and (ii) elasto-plastic triangular lattices display significant toughening, while elasto-plastic hexagonal lattices fail in a brittle manner. We show that the difference in such failure behavior can be explained by the size of the plastic zone that grows upon crack propagation, and conclude that the nature of crack propagation in lattices (brittle vs ductile) depends both on the constituent material and the lattice architecture. While results are presented for 2D truss-lattices, the proposed approach can be easily applied to 3D truss and shell-lattices, as long as the crack tip lies within the empty space of a unit cell.
description: 40 pages, 14 figures
Nonlinear Photon Bubbles Driven by Buoyancy
Creators: name: Begelman, Mitchell C.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We derive an analytic model for nonlinear "photon bubble" wave trains driven by buoyancy forces in magnetized, radiation pressure-dominated atmospheres. Continuous, periodic wave solutions exist when radiative diffusion is slow compared to the dynamical timescale of the atmosphere. We identify these waves with the saturation of a linear instability discovered by Arons - therefore, these wave trains should develop spontaneously. The buoyancy-driven waves are physically distinct from photon bubbles in the presence of rapid diffusion, which evolve into trains of gas pressure-dominated shocks as they become nonlinear. Like the gas pressure-driven shock trains, buoyancy-driven photon bubbles can exhibit very large density contrasts, which greatly enhance the flow of radiation through the atmosphere. However, steady-state solutions for buoyancy-driven photon bubbles exist only when an extra source of radiation is added to the energy equation, in the form of a flux divergence. We argue that this term is required to compensate for the radiation flux lost via the bubbles, which increases with height. We speculate that an atmosphere subject to buoyancy-driven photon bubbles, but lacking this compensating energy source, would lose pressure support and collapse on a timescale much shorter than the radiative diffusion time in the equivalent homogeneous atmosphere.
description: 16 pages, 2 figures, 1 table, accepted for publication in The Astrophysical Journal
title: FS Sonne Fahrtbericht/Cruise Report SO 191
title: New Vents, "Puaretanga Hou" ; Wellington - Napier - Auckland, 11.01.-23.03.2007
titleType: AlternativeTitle
Creators: name: Bialas, Jörg
name: Greinert, Jens
name: Linke, Peter
name: Pfannkuche, Olaf
Publisher: name: IFM-GEOMAR, Kiel
Year: 2007

description: report
Precision determination of band offsets in strained InGaAs/GaAs quantum wells by C-V-profiling and Schroedinger-Poisson self-consistent simulation
Creators: name: Zubkov, V. I.
name: Melnik, M. A.
name: Solomonov, A. V.
name: Tsvelev, E. O.
name: Bugge, F.
name: Weyers, M.
name: Traenkle, G.
Publisher: name: arXiv
Year: 2003
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The results of measurements and numerical simulation of charge carrier distribution and energy states in strained quantum wells In_xGa_{1-x}As/GaAs (0.06 < x < 0.29) by C-V-profiling are presented. Precise values of conduction band offsets for these pseudomorphic QWs have been obtained by means of self-consistent solution of Schroedinger and Poisson equations and following fitting to experimental data. For the conduction band offsets in strained In_xGa_{1-x}As/GaAs - QWs the expression DE_C(x) = 0.814x - 0.21x^2 has been obtained.
description: 9 pages, 12 figures, RevTeX4
Automatic Detection of Influential Actors in Disinformation Networks
Creators: name: Smith, Steven T.
name: Kao, Edward K.
name: Mackin, Erika D.
name: Shah, Danelle C.
name: Simek, Olga
name: Rubin, Donald B.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Social and Information Networks (cs.SI)
subject: Machine Learning (cs.LG)
subject: Applications (stat.AP)
subject: Machine Learning (stat.ML)
subject: FOS: Computer and information sciences

description: The weaponization of digital communications and social media to conduct disinformation campaigns at immense scale, speed, and reach presents new challenges to identify and counter hostile influence operations (IOs). This paper presents an end-to-end framework to automate detection of disinformation narratives, networks, and influential actors. The framework integrates natural language processing, machine learning, graph analytics, and a novel network causal inference approach to quantify the impact of individual actors in spreading IO narratives. We demonstrate its capability on real-world hostile IO campaigns with Twitter datasets collected during the 2017 French presidential elections, and known IO accounts disclosed by Twitter over a broad range of IO campaigns (May 2007 to February 2020), over 50,000 accounts, 17 countries, and different account types including both trolls and bots. Our system detects IO accounts with 96% precision, 79% recall, and 96% area-under-the-PR-curve, maps out salient network communities, and discovers high-impact accounts that escape the lens of traditional impact statistics based on activity counts and network centrality. Results are corroborated with independent sources of known IO accounts from U.S. Congressional reports, investigative journalism, and IO datasets provided by Twitter.
description: Proc. Natl. Acad. Sciences U.S.A. Vol. 118, No. 4, e2011216118
Cavellina Coryell 1928
Creators: name: Chitnarin, Anisong
name: Crasquin, Sylvie
name: Forel, Marie-Béatrice
name: Tepnarong, Prachya
Publisher: name: Zenodo
Year: 2017
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Ostracoda
Podocopida
Cavellinidae
Cavellina

description: Genus Cavellina Coryell, 1928
 TYPE SPECIES. — Cavellina pulchella Coryell,1928 by original designation.
description: Published as part of Chitnarin, Anisong, Crasquin, Sylvie, Forel, Marie-Béatrice & Tepnarong, Prachya, 2017, Ostracods (Crustacea) of the Early-Middle Permian (Cisarulian-Guadalupian) from Central Thailand (Indochina Block): Part II, Orders Podocopida, Platycopida and Myodocopida, pp. 651-690 in Geodiversitas 39 (4) on page 682, DOI: 10.5252/g2017n4a1, http://zenodo.org/record/4536112
Handel zagraniczny ziołami i przyprawami w krajach Unii Europejskiej
Creators: name: Rokicki, Tomasz
name: Wiluk, Magdalena
name: Rokicki, Tomasz
name: Wiluk, Magdalena
Publisher: name: Unknown
Year: 2016
Subjects: subject: Agribusiness
subject: Community/Rural/Urban Development
subject: Crop Production/Industries
subject: International Relations/Trade
subject: herbs and spices
subject: European Union
subject: export
subject: import
subject: / zioła i przyprawy
subject: Unia Europejska
subject: eksport

description: The aim of the study was to evaluate the variability of the foreign trade herbs and spices in the EU countries and attempt to identify common patterns. The article presents the export and import of herbs and spices in tonnes and in value in the EU countries. The source materials constituted data of FAOSTAT. The study period covered the 2007-2013. The study included all EU Member States. In 2007-2013, foreign trade herbs and spices in EU countries has increased. Exports outweighed imports, because of its value in 2013 amounted to 459.3 thousand. tons and value of imports only 71.4 thousand tons. The largest exporters and importers of herbs and spices are the largest and the most developed EU countries, where there was a large concentration of trade in these products. Most falls in the export of herbs and spices was in 2009, and in imports in 2012. In the case of countries with the largest trade, changes in particular years were not big, as in smaller exporters and importers. In the present study showed a significant strong positive correlation of international trade herbs and spices with the economy's parameters set by the value of GDP, the value of exports and imports. / Synopsis. Celem głównym badań była ocena zmienności handlu zagranicznego ziołami i przyprawami w krajach UE i próba wskazania występujących prawidłowości. W artykule przedstawiono eksport i import ziół oraz przypraw w tonach i w USD w krajach Unii Europejskiej. Źródłem materiałów były dane z FAOSTAT. Okres badań dotyczył lat 2007-2013. Do badań przyjęto wszystkie państwa członkowskie UE. W latach 2007-2013 handel zagraniczny ziołami i przyprawami w krajach UE zwiększył się. Eksport przeważał nad importem, gdyż jego wartość w 2013 roku wyniosła 459,3 tys. ton wobec 71,4 tys. ton importu. Największymi eksporterami i importerami ziół oraz przypraw były największe i najbardziej rozwinięte państwa UE, w których występowała duża koncentracja handlu tymi produktami. Najwięcej spadków w eksporcie ziół i przypraw stwierdzono w 2009 roku, a w imporcie w 2012 roku. W przypadku państw o największym handlu zmiany w poszczególnych latach nie były gwałtowne, tak jak u mniejszych eksporterów i importerów. Stwierdzono istotny silny dodatni związek handlu międzynarodowego ziołami i przyprawami z parametrami gospodarki określonymi przez wartość PKB, wartość eksportu oraz importu.
Concentration for random product formulas
Creators: name: Chen, Chi-Fang
name: Huang, Hsin-Yuan
name: Kueng, Richard
name: Tropp, Joel A.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Quantum Physics (quant-ph)
subject: Probability (math.PR)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: Quantum simulation has wide applications in quantum chemistry and physics. Recently, scientists have begun exploring the use of randomized methods for accelerating quantum simulation. Among them, a simple and powerful technique, called qDRIFT, is known to generate random product formulas for which the average quantum channel approximates the ideal evolution. qDRIFT achieves a gate count that does not explicitly depend on the number of terms in the Hamiltonian, which contrasts with Suzuki formulas. This work aims to understand the origin of this speed-up by comprehensively analyzing a single realization of the random product formula produced by qDRIFT. The main results prove that a typical realization of the randomized product formula approximates the ideal unitary evolution up to a small diamond-norm error. The gate complexity is already independent of the number of terms in the Hamiltonian, but it depends on the system size and the sum of the interaction strengths in the Hamiltonian. Remarkably, the same random evolution starting from an arbitrary, but fixed, input state yields a much shorter circuit suitable for that input state. In contrast, in deterministic settings, such an improvement usually requires initial state knowledge. The proofs depend on concentration inequalities for vector and matrix martingales, and the framework is applicable to other randomized product formulas. Our bounds are saturated by certain commuting Hamiltonians.
description: 27 pages, 6 figures
title: An expert system approach to retrograde-analysis
Creators: name: Alden, Brian Edwin Peter
Publisher: name: The Open University
Year: 1986

description: This thesis presents a system called RETRO, which has the capability of solving a number of retrograde-analysis chess problems of varying degrees of difficulty. Retrograde-analysis problems are exercises in deductive reasoning, entirely different from conventional 'mate-in-n-moves' chess problems, their nature being such that any type of question, together with perhaps an assortment of associated initial conditions, may be presented to the solver, whilst their solution lies in asking pertinent questions at each step of the deduction process. The aim has been to investigate the extent to which the deduction of past events may direct attention to these questions, a key concept being that of a 'Significant Event' (SE), which is an event of significance that must have occurred at some time in the history of the game. An SE is akin to a frame, the usual slots being replaced by the questions that the SE prompts, to which the answers may either provide a solution to the original problem or point to another SE, together with its association questions. It is shown that a small number of SEs possess widespread application. RETRO maintains an explicit knowledge base of rules, grouped according to function, which are used both by the SEs and the system. This knowledge base is designed for easy amendment. RETRO also maintains an explanation facility, which provides an account of its deductions, including a listing of rules utilised. A number of examples are presented which demonstrate the effectiveness of the SE approach. There is also a discussion as to how the concept may be expanded, and its possible limitations.
Spin-liquid versus dimerized ground states in a frustrated Heisenberg antiferromagnet
Creators: name: Capriotti, Luca
name: Scalapino, Douglas J.
name: White, Steven R.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We present a Density Matrix Renormalization Group (DMRG) study of the ground-state properties of spin-1/2 frustrated $J_1-J_3$ Heisenberg $n_l$-leg ladders (with $n_l$ up to 8). For strong frustration ($J_3/J_1\simeq 0.5$), both even- and odd-leg ladders display a finite gap to spin excitations, which we argue remains finite in the two-dimensional limit. In this regime, on odd-leg ladders the ground state is spontaneously dimerized, in agreement with the Lieb-Schultz-Mattis prediction, while on even-leg ladders the dimer correlations decay exponentially. The magnitude of the dimer order parameter decreases as the number of legs increases, consistent with a two-dimensional spin-liquid ground state.
description: 4 pages, 5 figures
Sulcella Coryell & Sample 1932
Creators: name: Chitnarin, Anisong
name: Crasquin, Sylvie
name: Forel, Marie-Béatrice
name: Tepnarong, Prachya
Publisher: name: Zenodo
Year: 2017
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Ostracoda
Podocopida
Cavellinidae
Sulcella

description: Genus Sulcella Coryell & Sample, 1932
 TYPE SPECIES. — Sulcella sulcata Coryell & Sample, 1932 by original designation.
description: Published as part of Chitnarin, Anisong, Crasquin, Sylvie, Forel, Marie-Béatrice & Tepnarong, Prachya, 2017, Ostracods (Crustacea) of the Early-Middle Permian (Cisarulian-Guadalupian) from Central Thailand (Indochina Block): Part II, Orders Podocopida, Platycopida and Myodocopida, pp. 651-690 in Geodiversitas 39 (4) on page 683, DOI: 10.5252/g2017n4a1, http://zenodo.org/record/4536112
Phonon Stability and Sound Velocity of Quantum Droplets in a Boson Mixture
Creators: name: Gu, Qi
name: Yin, Lan
Publisher: name: arXiv
Year: 2020
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: FOS: Physical sciences

description: Quantum droplets have been realized in experiments on binary boson mixtures and dipolar Bose gases. In these systems, the mean-field energy of the Bose-Einstein condensation is attractive, and the repulsive Lee-Huang-Yang energy is crucial for stability. The Bogoliubov theory incorrectly predicts that the phonon mode is dynamically unstable in the long-wavelength limit. In this work, we go beyond the Bogoliubov theory to study how the phonon mode is stabilized in the quantum droplet of a binary boson mixture. Similar to Beliaev's approach to a single-component Bose gas, we compute higher-order contributions to the self-energy of the boson propagator. We find that the interaction between spin and phonon excitations is the key for the phonon stability. We obtain the sound velocity which can be tested by measuring the superfluid critical velocity of the droplet in experiments. Beliaev damping of this quantum droplet is also discussed.
description: 5 pages, 2 figures
Natural star products on symplectic manifolds and quantum moment maps
Creators: name: Gutt, Simone
name: Rawnsley, John
Publisher: name: arXiv
Year: 2003
Subjects: subject: Symplectic Geometry (math.SG)
subject: Quantum Algebra (math.QA)
subject: FOS: Mathematics
subject: 53D55

description: We define a natural class of star products: those which are given by a series of bidifferential operators which at order $k$ in the deformation parameter have at most $k$ derivatives in each argument. We show that any such star product on a symplectic manifold defines a unique symplectic connection. We parametrise such star products, study their invariance and give necessary and sufficient conditions for them to yield a quantum moment map. We show that Kravchenko's sufficient condition for a moment map for a Fedosov star product is also necessary.
description: Expanded bibliography
Polycope Sars 1866
Creators: name: Chitnarin, Anisong
name: Crasquin, Sylvie
name: Forel, Marie-Béatrice
name: Tepnarong, Prachya
Publisher: name: Zenodo
Year: 2017
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Ostracoda
Halocyprida
Polycopidae
Polycope

description: Genus Polycope Sars, 1866
 TYPE SPECIES. — Polycope orbicularis Sars, 1866 by original designation.
description: Published as part of Chitnarin, Anisong, Crasquin, Sylvie, Forel, Marie-Béatrice & Tepnarong, Prachya, 2017, Ostracods (Crustacea) of the Early-Middle Permian (Cisarulian-Guadalupian) from Central Thailand (Indochina Block): Part II, Orders Podocopida, Platycopida and Myodocopida, pp. 651-690 in Geodiversitas 39 (4) on page 685, DOI: 10.5252/g2017n4a1, http://zenodo.org/record/4536112
From Reference Frames to Relativistic Experiments: Absolute and Relative Radio Astrometry
Creators: name: Fomalont, E. B.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Reference systems and frames are crucial for high precision absolute astrometric work, and their foundations must be well-defined. The current frame, the International Celestial Reference Frame, will be discussed: its history, the use of the group delay as the measured quantity, the positional accuracy of 0.3 milliarcsec, and possible future improvements. On the other hand, for the determination of the motion of celestial objects, accuracies approaching 0.01 milliarcsec can be obtained by measuring the differential position between the target object and nearby stationary sources. This astrometric technique uses phase referencing, and the current techniques and limitations are discussed, using the results from four experiments. Brief comments are included on the interpretation of the Jupiter gravity deflection experiment of September 2002.
description: 25 pages, 7 figures--Presented at JENAM meeting in Budapest, 27-30 August 2003
Spożycie tłuszczów w Polsce i Unii Europejskiej
Creators: name: Rosiak, Ewa
name: Rosiak, Ewa
Publisher: name: Unknown
Year: 2016
Subjects: subject: Agribusiness
subject: Consumer/Household Economics
subject: Food Consumption/Nutrition/Food Safety
subject: Health Economics and Policy
subject: International Relations/Trade
subject: consumption
subject: fats
subject: Poland
subject: European Union
subject: / spożycie
subject: tłuszcze
subject: Polska
subject: Unia Europejska

description: The article presents trends in fat consumption patterns in Poland between 1990-2015. The analysis is based on macro-economic data and data from household budget analysis conducted by CSO. The comparison between models of fat consumption in Poland and other European Union countries was based on FAO data. It was shown that after Polish accession to the European Union, previous trends in fat consumption were continued and a fat consumption model similar to that of developed EU countries become more widespread. Vegetable oils continued to grow as a proportion of all consumed fats. In comparison to other EU countries, Poland is characterized by a relatively high proportion of animal fats in consumption, especially butter. Despite high growth of vegetable oil consumption, it is still lower than in most EU countries. / Synopsis. W artykule przedstawiono zmiany jakie nastąpiły w modelu spożycia tłuszczów w Polsce w latach 1990-2015. Analizę zmian przeprowadzono na podstawie danych bilansowych oraz danych z badań budżetów rodzinnych prowadzonych przez GUS. W oparciu o dostępne dane FAO dokonano porównania modelu spożycia tłuszczów w Polsce i innych krajach Unii Europejskiej. Wykazano, że po akcesji Polski do Unii Europejskiej w spożyciu tłuszczów kontynuowane były procesy z lat poprzednich, upowszechniania się wzorców spożycia tłuszczów charakterystycznych dla rozwiniętych krajów Unii. W grupie tłuszczów kontynuowany był wzrost udziału tłuszczów roślinnych w spożyciu tłuszczów ogółem. Polska w porównaniu z pozostałymi krajami Unii Europejskiej charakteryzuje się relatywnie wysokim spożyciem tłuszczów zwierzęcych, w tym szczególnie masła, natomiast konsumpcja tłuszczów roślinnych, mimo dużego wzrostu w dalszym ciągu jest na niższym poziomie niż w wielu krajach Unii.
Die jungpleistozänen und holozänen Gletschervorstöße am Malinche— Vulkan, Mexiko
Creators: name: Heine, Klaus
Publisher: name: Geozon Science Media
Year: 1973

description: Vom Malinche-Vulkan/Mexiko werden vier Moränenstaffeln beschrieben, die aufgrund einer stratigraphischen Bearbeitung der Sedimente der Vulkanhänge zeitlich bestimmt werden können. Die Moränen M I wurden im Mittel-Wisconsin gebildet, die Moränen M II und M III im Jung-Wisconsin, die Moränen M IV während der Neoglaciation im Holozän. Ein Vergleich der Malinche-Moränen mit denen des Vulkans Iztaccíhuatl sowie denen der Sierra Nevada de Santa Marta in Kolumbien wird gegeben.
description: research
Holistic Herbal Practice: Bone maintenance and repair
Creators: name: King, Michael
Publisher: name: figshare
Year: 2020
Subjects: subject: 110499 Complementary and Alternative Medicine not elsewhere classified
subject: FOS: Clinical medicine

description: looking to enhance rate of bone repair, deriving treatment plan from current literature provides cutting-edge clinical inference drawn from animal or human studies
Chiński rynek rolno-spożywczy – możliwości rozwoju eksportu polskiej żywności
Creators: name: Rosińska-Bukowska, Magdalena
name: Rosińska-Bukowska, Magdalena
Publisher: name: Unknown
Year: 2016
Subjects: subject: Agribusiness
subject: Agricultural and Food Policy
subject: Consumer/Household Economics
subject: International Development
subject: International Relations/Trade
subject: agri-food trade
subject: food
subject: trade Poland-China
subject: agriculture
subject: / handel rolno-spożywczy
subject: żywność
subject: handel Polska-Chiny
subject: rolnictwo

description: The aim of the study is to assess the development potential of Polish agri-food exports to China due to the changes that have occurred in recent years in the Chinese model of consumption. It characterized the potential of the Polish agri-food sector (production and exports, compared to EU partners). The study assumed that the starting point is the necessity to characterize the economy and society of China. Trends in the Chinese model of consumption are shown first. The next section focuses on the size and structure of demand for agri-food products that Poland is interested in exporting (dairy products and meat), and the present method of satisfying that demand. The last part of the article presents data concerning Polish agri-food exports to China and attempts to assess the potential of its development. / Synopsis. Celem artykułu jest próba oceny możliwości rozwoju polskiego eksportu rolnospożywczego do Chin w efekcie zmian, jakie dokonały się w ostatnich latach w chińskim modelu konsumpcyjnym. Scharakteryzowano potencjał polskiego sektora rolno-spożywczego (produkcję oraz eksport na tle partnerów z UE). Punktem wyjścia badania jest charakterystyka gospodarki i społeczeństwa Chin. Zarysowanie kierunków zmian w chińskim modelu konsumpcyjnym uznano bowiem za konieczność przy ocenie realnych szans dla rozwoju polskiego eksportu. W drugiej części artykułu skoncentrowano się na wielkości i strukturze popytu na artykuły rolno-spożywcze, których eksportem jest zainteresowana Polska (produkty mleczarskie i mięsne) oraz obecnym sposobie zaspokajania go. W ostatniej części zaprezentowano dane dotyczące polskiego eksportu rolnospożywczego do Chin oraz podjęto próbę oceny potencjalnych możliwości jego rozwoju.
The Formation of Isolated Ultra-Diffuse Galaxies in Romulus25
Creators: name: Wright, Anna C.
name: Tremmel, Michael
name: Brooks, Alyson M.
name: Munshi, Ferah
name: Nagai, Daisuke
name: Sharma, Ray S.
name: Quinn, Thomas R.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We use the \textsc{Romulus25} cosmological simulation volume to identify the largest-ever simulated sample of {\it field} ultra-diffuse galaxies (UDGs). At $z=0$, we find that isolated UDGs have average star formation rates, colors, and virial masses for their stellar masses and environment. UDGs have moderately elevated HI masses, being 70\% (300\%) more HI-rich than typical isolated dwarf galaxies at luminosities brighter (fainter) than M$_\mathrm{B}$=-14. However, UDGs are consistent with the general isolated dwarf galaxy population and make up $\sim$20\% of all field galaxies with 10$^7$
description: 20 pages, 16 figures, 2 movies, accepted to MNRAS
Mass Measurements of AGN from Multi-Lorentzian Models of X-ray Variability. I. Sampling Effects in Theoretical Models of the rms^2-M_BH Correlation
Creators: name: Pessah, Martin E.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Recent X-ray variability studies suggest that the log of the square of the fractional rms variability amplitude, rms^2, seems to correlate with the log of the AGN black-hole mass, M_BH, with larger black holes being less variable for a fixed time interval. This has motivated the theoretical modeling of the rms^2-M_BH correlation with the aim of constraining AGN masses based on X-ray variability. A viable approach to addressing this problem is to assume an underlying power spectral density with a suitable mass dependence, derive the functional form of the rms^2-M_BH correlation for a given sampling pattern, and investigate whether the result is consistent with the observations. For simplicity, previous studies, inspired by the similarities shared by the timing properties of AGN and X-ray binaries, have explored model power spectral densities characterized by broken power laws. and ignored, in general, the distorting effects that the particular sampling pattern imprints in the observed power spectral density. Motivated by the latest timing results from X-ray binaries, obtained with RXTE, we propose that AGN broad-band noise spectra consist of a small number of Lorentzian components. This assumption allows, for the first time, to fully account for sampling effects in theoretical models of X-ray variability in an analytic manner. We show that, neglecting sampling effects when deriving the fractional rms from the model power spectral density can lead to underestimating it by a factor of up to 80% with respect to its true value for the typical sampling patterns used to monitor AGN. We discuss the implications of our results for the derivation of AGN masses using theoretical models of the rms^2-M_BH correlation. (Abridged)
description: The Astrophysical Journal, in press, 11 pages, 6 figures
Low scale gravity as the source of neutrino masses?
Creators: name: Berezinsky, Veniamin
name: Narayan, Mohan
name: Vissani, Francesco
Publisher: name: arXiv
Year: 2004
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We address the question whether low-scale gravity alone can generate the neutrino mass matrix needed to accommodate the observed phenomenology. In low-scale gravity the neutrino mass matrix in the flavor basis is characterized by one parameter (the gravity scale M_X) and by an exact or approximate flavor blindness (namely, all elements of the mass matrix are of comparable size). Neutrino masses and mixings are consistent with the observational data for certain values of the matrix elements, but only when the spectrum of mass is inverted or degenerate. For the latter type of spectra the parameter M_{ee} probed in double beta experiments and the mass parameter probed by cosmology are close to existing upper limits.
description: 10 pages, 1 figure
Polycope Sars 1866
Creators: name: Chitnarin, Anisong
name: Crasquin, Sylvie
name: Forel, Marie-Béatrice
name: Tepnarong, Prachya
Publisher: name: Zenodo
Year: 2017
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Ostracoda
Halocyprida
Polycopidae
Polycope

description: Polycope sp. A
(Fig. 27 M-P)
MATERIAL EXAMINED. — Seven complete carapaces.
OCCURRENCES. — Samples 08LO02-1, 08LO02-2, Tham Nam Maholan section, Nam Maholan Formation, Loei province, northeastern Thailand, Early Permian; sample 07PB04-2, Nong Phai section, Pha Nok Khao Formation, Phetchabun Province, central Thailand, Early Permian; sample 07LB05-B2, Ta Kli section, Tak Fa Formation, Nakhon Sawan province, central Thailand, Early Permian; sample 08LB01-1, Khao Som Phot section, Tak Fa Formation, Lopburi Province, central Thailand, Middle Permian.
DIMENSIONS. — H = 0.28-0.45 mm, L = 0.26-0.40 mm, H/L = 1.07-1.6.
REMARKS
 Polycope sp. A is characterized by high and suboval carapace with straight DB.
description: Published as part of Chitnarin, Anisong, Crasquin, Sylvie, Forel, Marie-Béatrice & Tepnarong, Prachya, 2017, Ostracods (Crustacea) of the Early-Middle Permian (Cisarulian-Guadalupian) from Central Thailand (Indochina Block): Part II, Orders Podocopida, Platycopida and Myodocopida, pp. 651-690 in Geodiversitas 39 (4) on page 685, DOI: 10.5252/g2017n4a1, http://zenodo.org/record/4536112
Die Entstehung der dänischen und norddeutschen Rinnentäler (Tunneltäler) -Glaziologische Gesichtspunkte
Creators: name: Smed, Per
Publisher: name: Geozon Science Media
Year: 1998

description: Die alte Tunneltal-Theorie (Ussing 1907) ist immer umstritten gewesen, besonders weil die so benannten Täler mehr als 1 km breit sein können. Es wurde behauptet, daß so breite Tunnel oder Hohlräume unter Gletschereis unmöglich seien. Seit 1950 haben Fortschritte in der Glaziologie (besonders Nye 1952 und Shreve 1972) bewirkt, daß die Tunneltal-Idee neu belebt worden ist. Lange und schmale Eiszungen, wie sie noch heute auf vielen Karten von Norddeutschland gezeigt werden, sind nach Nye nur in Gebirgslandschaften möglich. Dagegen entspricht Shreves Bild vom Verlauf subglazialer Wasserströme genau dem aus Dänemark, Holstein und Mecklenburg bekannten Muster von Osern und Rinnentälern. Küster & Meykr (1979) und Ehlers & Linke (1989) interpretieren die begrabenen norddeutschen Täler („incisions") als subglaziale Schmelzwasserrinnen. Bis heute fehlt jedoch eine befriedigende Erklärung der zuweilen großen Talbreite. Eine Gruppe dänischer Forscher (vor allem Humlum) hat versucht, diesem Mangel abzuhelfen. Es ergibt sich, daß ein sukzessives Entstehen die wahrscheinlichste Lösung ist. Im Winter, wenn wenig Schmelzwasser anfällt, preßt das Gletschereis den Tunnel zusammen, so daß der Tunnelquerschnitt die verstärkte Wasserführung des Frühjahrs nicht fassen kann. Ein neuer Tunnel muß in den Untergrund eingeschnitten werden. Wenn sich dieser Prozeß jedes Jahr wiederholt, ist das Resultat eine breite Talsohle. Es wird gezeigt, daß die Morphologie dänischer Tunneltäler bis in alle Einzelheiten durch diesen Vorgang erklärt werden kann, und daß eine entsprechend detaillierte Erklärung durch keine der bis heute angebotenen alternativen Theorien geboten werden kann.
description: research
Optimal eddy viscosity for resolvent-based models of coherent structures in turbulent jets
Creators: name: Pickering, Ethan
name: Rigas, Georgios
name: Schmidt, Oliver T.
name: Sipp, Denis
name: Colonius, Tim
Publisher: name: arXiv
Year: 2020
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: Response modes computed via linear resolvent analysis of a turbulent mean-flow field have been shown to qualitatively capture characteristics of the observed turbulent coherent structures in both wall-bounded and free shear flows. To make such resolvent models predictive, the nonlinear forcing term must be closed. Strategies to do so include imposing self-consistent sets of triadic interactions, proposing various source models, or through turbulence modelling. For the latter, several investigators have proposed using the mean-field eddy viscosity acting linearly on the fluctuation field. In this study, a data-driven approach is taken to quantitatively improve linear resolvent models by deducing an optimal eddy-viscosity field that maximizes the projection of the dominant resolvent mode to the energy-optimal coherent structure educed using spectral proper orthogonal decomposition (SPOD) of data from high-fidelity simulations. We use large-eddy simulation databases for round isothermal jets at subsonic, transonic, and supersonic conditions and show that the optimal eddy viscosity substantially improves the alignment between resolvent and SPOD modes, reaching over 90% alignment at those frequencies where the jet exhibits a low-rank response. We then consider a fixed model for the eddy viscosity and show that with the calibration of a single constant, the results are generally close to the optimal one. In particular, the use of a standard Reynolds-Averaged-Navier-Stokes (RANS) eddy-viscosity resolvent model, with a single coefficient, provides substantial agreement between SPOD and resolvent modes for three turbulent jets and across the most energetic wavenumbers and frequencies.
description: 34 pages, 18 figures, under consideration for publication in the Journal of Fluid Mechanics
Lösse und Paläoböden der letzten Kaltzeit im mediterranen Raum
Creators: name: Brunnacker, Karl
Publisher: name: Geozon Science Media
Year: 1974

description: Vorkommen und Aufbau von Lößprofilen des mediterranen Raumes werden besprochen und als Klimaindikatoren der letzten Kaltzeit interpretiert. Mangels sicherer stratigraphischer Marken wird dabei vom mitteleuropäischen Periglazialbereich schrittweise gegen Süden vorgegangen. Die durch Winterregen gekennzeichnete Zone hat während der letzten Kaltzeit ihre Lage nicht verändert. Refugien für die gemäßigt-warme mitteleuropäische Flora und Fauna sind nächst ihrer Nordgrenze in Südosteuropa erfaßt (Neretva-Tal). Der für den mediterranen Raum charakteristische Deluviallöß und die im einzelnen noch nicht eindeutig definierten Paläoböden fügen sich trotz vieler Unsicherheiten in einen großregionalen Rahmen. Derselbe ist durch Übergangsstellung zu wärmeren und arideren Bereichen gekennzeichnet. Dabei muß im gesamten Raum mit erheblicher Temperaturabsenkung während der Kaltzeit gegenüber heutigen Bedingungen gerechnet werden. Im einzelnen wirken sich jedoch klimatische Schwellenwerte auf die Ausbildung der Profile aus. Stufenweise vereinfacht sich dabei gegen trockenere Bereiche hin der Profilaufbau, indem die zwischengeschalteten kaltzeitlichen Paläoböden Merkmale schwächerer Ausprägung zeigen, an Zahl abnehmen (von maximal drei Böden) und schließlich ausfallen. Zugleich mehren sich die Hinweise auf Verspülungen im Löß (Deluviallöß). Die regionalen Differenzierungen in der Profilausbildung stehen mit rezenten Klimadaten in Beziehung. Dies entspricht den Feststellungen in Mitteleuropa. Im mediterranen Raum ist allerdings an die Stelle der Niederschlagswerte die Zahl der heutigen Dürremonate als Maßstab zu setzen. So ist auch die Südgrenze des mediterranen Lösses eine Trockenheitsgrenze, die etwa dem Verlauf der heutigen 150-mm-Niederschlagslinie folgt. Im zeitlichen Ablauf lassen überdies Löß wie eingeschaltete Böden eine Grundentwicklung von feuchter zu trockener innerhalb der letzten Kaltzeit erkennen. Ferner deuten sich lokal gegen Ende der Kaltzeit wieder etwas humidere Verhältnisse an. Diese Zeiten waren mit intensiverer pedogener Wirkung verbunden. Eine zeitlich-räumliche Verschiebung der über die Paläoböden ausgewiesenen humideren Abschnitte aus den Warmzeiten Mitteleuropas vor allem gegen den südlicheren mediterranen Bereich in den Beginn sowie in den Ausgang der Kaltzeit hinein kompliziert den Überblick, zumal auch diese Böden gegen aridere Räume hin schwächere Ausprägung zeigen. Allerhöchstens diese „Übergangszeiten" können als Pluvialzeiten früherer Vorstellungen interpretiert werden.
description: research
Soft Magnetorotons and Broken-Symmetry States in Bilayer Quantum Hall Ferromagnets
Creators: name: Luin, Stefano
name: Pellegrini, Vittorio
name: Pinczuk, Aron
name: Dennis, Brian S.
name: Pfeiffer, Loren N.
name: West, Ken W.
Publisher: name: arXiv
Year: 2003
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: The recent report on the observation of soft magnetorotons in the dispersion of charge-density excitations across the tunneling gap in coupled bilayers at total Landau level filling factor $ν_T=1$ is reviewed. The inelastic light scattering experiments take advantage of the breakdown of wave-vector conservation that occurs under resonant excitation. The results offer evidence that in the quantum Hall state there is a roton that softens and sharpens markedly when the phase boundary for transitions to highly-correlated compressible states is approached. These findings are interpreted with Hartree-Fock evaluations of the dynamic structure factor. The model includes the effect of disorder in the breakdown of wave-vector conservation and resonance enhancement profiles within a phenomenological approach. These results link the softening of magnetorotons to enhanced excitonic Coulomb interactions in the ferromagnetic bilayers.
description: 6 pages, 5 figures; conference: EP2DS-15
Dochody rodzinnych gospodarstw rolnych w warunkach integracji europejskiej i globalizacji
Creators: name: Ryś-Jurek, Roma
name: Ryś-Jurek, Roma
Publisher: name: Unknown
Year: 2016
Subjects: subject: Agribusiness
subject: Agricultural Finance
subject: Farm Management
subject: International Development
subject: Production Economics
subject: income
subject: family farm
subject: integration
subject: globalization
subject: / dochód
subject: rodzinne gospodarstwo rolne
subject: integracja
subject: globalizacja

description: Integration has an impact on the economic, political and institutional shape of Europe and globalization is a phenomenon that affects almost all spheres of human life – from trade, to finance, to lifestyle and culture. These two processes have a significant impact on the shape of the model of agriculture which is implemented in the European Union. The promotion of family farm incomes by subsidies plays a key role in this model. The article examined the income situation of family farms between 2005 and 2013 on the basis of FADN data. The average level of family farm income by country of the European Union was estimated in terms of 1 holding, 1 hectare of agricultural land and 1 work unit AWU. These calculations are made also for income minus the value of the subsidies. So, the most lucrative family farms by country in the European Union, as well as the effect of subsidization on the final shape of family farm incomes, were shown. / Synopsis. Integracja wywiera wpływ na kształt gospodarczy, polityczny i instytucjonalny Europy, a globalizacja to zjawisko, które oddziałuje na niemal wszystkie sfery życia człowieka – od handlu, przez finanse, po styl życia i kulturę. Te dwa procesy mają znaczny wpływ na kształt realizowanego modelu rolnictwa w Unii Europejskiej. Kluczową rolę w nim odgrywa wspieranie rodzinnych gospodarstw rolnych poprzez subsydiowanie ich dochodów. W artykule zbadano sytuację dochodową rodzinnych gospodarstw rolnych w latach 2005-2013 na podstawie danych FADN. Oszacowano przeciętny poziom dochodu z rodzinnego gospodarstwa rolnego według kraju Unii Europejskiej w przeliczeniu na 1 gospodarstwo, 1 hektar użytków rolnych i 1 jednostkę pracy AWU. Obliczenia te wykonano również dla dochodu pomniejszonego o wartość subwencji. W ten sposób określono najbardziej dochodowe gospodarstwa według kraju Unii Europejskiej, a także uchwycono wpływ subwencjonowania na ostateczny kształt dochodów gospodarstw rolnych.
Polycope Sars 1866
Creators: name: Chitnarin, Anisong
name: Crasquin, Sylvie
name: Forel, Marie-Béatrice
name: Tepnarong, Prachya
Publisher: name: Zenodo
Year: 2017
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Ostracoda
Halocyprida
Polycopidae
Polycope

description: Polycope sp. C
(Fig. 27 S-U)
MATERIAL EXAMINED. — Six complete carapaces.
OCCURRENCES. — Samples 08LO02-6, 08LO02-10 Tham Nam Maholan section, Nam Maholan Formation, Loei province, northeastern Thailand, Early Permian; samples 07 PB04-2, 07 PB04-5, Nong Phai section, Pha Nok Khao Formation, Phetchabun Province, central Thailand, Early Permian; sample 07LB09-1, Khao Phu Chongkho locality, Tak Fa Formation, Nakhon Sawan province, central Thailand, late Early Permian.
DIMENSIONS. — H = 0.25-0.48 mm, L = 0.27-0.54 mm, H/L = 0.88-0.96.
REMARKS
 Polycope sp. C has subcircular carapace and straight DB. Polycope sp. C differs from P. sp. A by the less H/L ratio, and from P. sp. B by straight DB and absence of the incised dorsum.
description: Published as part of Chitnarin, Anisong, Crasquin, Sylvie, Forel, Marie-Béatrice & Tepnarong, Prachya, 2017, Ostracods (Crustacea) of the Early-Middle Permian (Cisarulian-Guadalupian) from Central Thailand (Indochina Block): Part II, Orders Podocopida, Platycopida and Myodocopida, pp. 651-690 in Geodiversitas 39 (4) on page 685, DOI: 10.5252/g2017n4a1, http://zenodo.org/record/4536112
Is European integration causing Europe to become more nationalist? Evidence from the 2007–9 financial crisis
Creators: name: Polyakova, Alina
name: Fligstein, Neil
Publisher: name: Taylor & Francis
Year: 2020
Subjects: subject: Medicine
subject: Evolutionary Biology
subject: FOS: Biological sciences
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: Sociology
subject: FOS: Sociology
subject: Cancer
subject: Science Policy
subject: 111714 Mental Health
subject: FOS: Health sciences
subject: 110309 Infectious Diseases
subject: 60506 Virology

description: The European Union's (EU) political and economic integration project has grown dramatically since its inception in 1952. While the ultimate goal of the EU is unclear, one of its aspirations has been to attempt to create European citizens. The idea is that over time, citizens would look towards Europe as their main national identity. While the political and economic integration projects are quite far along, the national identity project has lagged far behind. The number of people who have primarily a European identity is quite small and has not increased much in the past 20 years. There is a far larger number of citizens for whom their national identity is paramount, but a European identity also exists. Since 2005, this group has grown smaller and the number of citizens with only a national identity has grown larger. This article argues that the EU integration project has pushed citizens to value their national identities more and to look to their national governments to protect them. We examine the evidence for this in the context of the 2007–9 financial crisis. We show that in countries most seriously hit by the crisis, national identities have increased dramatically and citizens with some European identity have decreased.