cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Developing ecological identities and environmental consciousness : study of children's understandings and attitudes about nature during a 10-month environmental education program
Creators: name: Estrada Alvarez, Laura Marcela
Publisher: name: University of British Columbia
Year: 2011

description: This thesis investigates children's perceptions of the natural world, and how their experience with one environmental education program has shaped their ecological identity and environmental consciousness. In order to examine children's understandings and attitudes about nature and the environment, I became a participant researcher in the Intergenerational Landed Learning Project (ILLP) at the UBC Farm during the 2005-2006 school year. The age of the children in this study was 9-10 years old. I employed a qualitative approach based on naturalistic inquiry and interpretation that aims to understand the context of lived experience. After the program finished, I chose to do an in-depth analysis of six children's experiences with ILLP at the UBC Farm based on semi-structured interviews collected. These interviews were complemented by recorded observations of particular activities at the farm, alongside my informal researcher journal. The value and significance of this study lies in the insights that the children's stories provide, and the many possibilities they reveal for educators interested in Education for Environmental Sustainability. My findings suggest that the students' experiences with the ILLP deepened their understandings about nature, and informed their attitudes about environmental sustainability. The study provides evidence that engaging the child in a local, place-based educational setting enables him/her to develop a stronger sense of place and nourish a strong connection to nature. The children developed more complex understandings of the environment and an empathic and compassionate relationship to the land and the people with whom they worked. They came to understand the importance of farms and local, organic food production through their experiences working with soil and cultivation. Their concern for the environment and their sense of responsibility toward taking care of it also grew stronger. The stories of these six children showed the importance of integrating emotions, understandings and practical skill development through experience with hands-on learning in the outdoors. The thesis offers an argument for the re-conceptualization of the ways we teach and learn about the Earth, and highlights programs like the ILLP, and places like the UBC Farm, as educational environments in which we are able promote education for environmental sustainability. It also provides examples of effective educational tools (such as Earth Literacy) that can help educators, parents and community members to enhance the development of children's ecological identity and environmental consciousness.
Effect of heterogeneous risk perception on information diffusion, behavior change, and disease transmission
Creators: name: Ye, Yang
name: Zhang, Qingpeng
name: Ruan, Zhongyuan
name: Cao, Zhidong
name: Xuan, Qi
name: Zeng, Daniel Dajun
Publisher: name: arXiv
Year: 2020
Subjects: subject: Physics and Society (physics.soc-ph)
subject: Social and Information Networks (cs.SI)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: Motivated by the importance of individual differences in risk perception and behavior change in people's responses to infectious disease outbreaks (particularly the ongoing COVID-19 pandemic), we propose a heterogeneous Disease-Behavior-Information (hDBI) transmission model, in which people's risk of getting infected is influenced by information diffusion, behavior change, and disease transmission. We use both a mean-field approximation and Monte Carlo simulations to analyze the dynamics of the model. Information diffusion influences behavior change by allowing people to be aware of the disease and adopt self-protection, and subsequently affects disease transmission by changing the actual infection rate. Results show that (a) awareness plays a central role in epidemic prevention; (b) a reasonable fraction of "over-reacting" nodes are needed in epidemic prevention; (c) R0 has different effects on epidemic outbreak for cases with and without asymptomatic infection; (d) social influence on behavior change can remarkably decrease the epidemic outbreak size. This research indicates that the media and opinion leaders should not understate the transmissibility and severity of diseases to ensure that people could become aware of the disease and adopt self-protection to protect themselves and the whole population.
The orientation parameters and rotation curves of 15 spiral galaxies
Creators: name: Fridman, A. M.
name: Afanasiev, V. L.
name: Dodonov, S. N.
name: Khoruzhii, O. V.
name: Moiseev, A. V.
name: Sil'chenko, O. K.
name: Zasov, A. V.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We analyzed ionized gas motion and disk orientation parameters for 15 spiral galaxies. Their velocity fields were measured with the H-alpha emission line by using the Fabry-Perot interferometer at the 6m telescope of SAO RAS. Special attention is paid to the problem of estimating the position angle of the major axis (PA_0) and the inclination (i) of a disk, which strongly affect the derived circular rotation velocity. We discuss and compare different methods of obtaining these parameters from kinematic and photometric observations, taking into account the presence of regular velocity (brightness) perturbations caused by spiral density waves. It is shown that the commonly used method of tilted rings may lead to systematic errors in the estimation of orientation parameters (and hence of circular velocity) being applied to galaxies with an ordered spiral structure. Instead we recommend using an assumption of constancy of i and PA_0 along a radius, to estimate these parameters. For each galaxy of our sample we present monochromatic H-alpha- and continuum maps, velocity fields of ionized gas, and the mean rotation curves in the frame of a model of pure circular gas motion. Significant deviations from circular motion with amplitudes of several tens of km/s (or higher) are found in almost all galaxies. The character and possible nature of the non-circular motion are briefly discussed.
description: Accepted in A&A, fig. 2-19 are low-resolution JPGs, for high-resolution PS see http://www.sao.ru/hq/moisav/moisav/fintext.ps.gz
Il Piano ex post.
Creators: name: CAMPOLONGO, A.
Publisher: name: Moneta e Credito
Year: 2014
Subjects: subject: Italy, statistical assessment, forecasts, growth, policy, employment, analysis, performance, Italian economy
subject: E60, E24, O47, O52

description: The five-year period covered by Italy’s first national economic Plan came to an end in December last year, so now it is possible to make a limited statistical assessment ex post of its results. The author confines comments to a few of the quantitative forecasts made, without analysing the cause of the divergence between forecasts and actual performance. Some of the Plan’s forecasts were confirmed or even exceeded by the actual performance: growth rate of GNP, expansion of the industrial and tertiary sectors, private saving, foreign trade and overall surplus of the balance of payments. Others, on the contrary, failed more or less seriously to materialise: employment, price stability, the gap in the Mezzogiorno, propensity to consume, public saving, financing of investments and exports of capital. JEL: E60, E24, O47, O52
description: Moneta e Credito, V. 24, N. 94 (1971)
Riscossioni tributarie, aggi esattoriali e sistema bancario.
Creators: name: PIN, A.
Publisher: name: Moneta e Credito
Year: 2014

description: L’articolo analizza il sistema di riscossione delle imposte dirette in Italia, gli aggi di riscossione, gli aspetti strutturali dell’apparato di riscossione tributaria in relazione al sistema bancario, le funzioni esattoriali nel contesto dell’attività bancaria ed alcune proposte di miglioramento al vigente sistema di riscossione esattoriale.
description: Moneta e Credito, V. 24, N. 94 (1971)
Agent-Based Simulation of Collective Cooperation: From Experiment to Model
Creators: name: Kleinmeier, Benedikt
name: Köster, Gerta
name: Drury, John
Publisher: name: arXiv
Year: 2020
Subjects: subject: Multiagent Systems (cs.MA)
subject: Computers and Society (cs.CY)
subject: FOS: Computer and information sciences

description: Simulation models of pedestrian dynamics have become an invaluable tool for evacuation planning. Typically crowds are assumed to stream unidirectionally towards a safe area. Simulated agents avoid collisions through mechanisms that belong to each individual, such as being repelled from each other by imaginary forces. But classic locomotion models fail when collective cooperation is called for, notably when an agent, say a first-aid attendant, needs to forge a path through a densely packed group. We present a controlled experiment to observe what happens when humans pass through a dense static crowd. We formulate and test hypothesis on salient phenomena. We discuss our observations in a psychological framework. We derive a model that incorporates: agents' perception and cognitive processing of a situation that needs cooperation; selection from a portfolio of behaviours, such as being cooperative; and a suitable action, such as swapping places. Agents' ability to successfully get through a dense crowd emerges as an effect of the psychological model.
description: 16 pages, 19 figures, 5 tables, 4 listings, interdisciplinary work between computer science and psychology
Il tallone d'Achille della contro-rivoluzione del prof. Friedman.
Creators: name: GAMBINO, A.
Publisher: name: Moneta e Credito
Year: 2014

description: The article considers Milton Friedman’s counter revolution in monetary theory. In effect, this counter-revolution starts with a reaffirmation, supported by an up-to-date re-elaboration, of the ultra secular quantity theory as far as this theory gives outstanding prominence to the changes in the quantity of money as being decisive elements in the changes of prices and income levels. The author argues, however, that while the condition concerning the parallelism between the growths of real income and those of the quantity of money certainly represents a necessary condition, it is not the one that is sufficient for price stabilisation. For this purpose, account must also be taken of the “fundamental equations” given by Keynes in his Treatise on Money, in order to establish the necessity of the equilibrium, in the sense of adjustment, between savings and investments. Accordingly, Friedman’s neglect to take these conditions into account constitutes the “Achilles’ heel” of the counter-revolution.
description: Moneta e Credito, V. 24, N. 95 (1971)
Il doppio mercato dei cambi: uno strumento addizionale di politica economica.
Creators: name: BARATTIERI, V.
name: RAGAZZI, G.
Publisher: name: Moneta e Credito
Year: 2014
Subjects: subject: Two-tier foreign exchange market, EEC, capital movements, Mundell, fiscal policy
subject: F31, F36, E62

description: This paper analyses the possible effects of the two-tier foreign exchange market. This system, which has been in operation in Belgium for over 15 years, has recently found new supporters, as is indicated by the fact that during the international monetary crisis of May 1971 the EEC Commission counselled its adoption. The author first analyses the reasons which may justify restrictions on the freedom of capital movements, both in the short run and in the longer term. Some of the technical characteristics of a two-tier foreign exchange market are then examined before the well-known Mundell analysis of the efficiency of monetary and fiscal policy in an open economy is extended to the case of a country with such a system. Finally, the author draws some conclusions and compares a two-tier system with other instruments designed to reduce the undesired repercussions of high capital mobility. JEL: F31, F36, E62
description: Moneta e Credito, V. 24, N. 95 (1971)
Nadwyżka zatrudnienia w polskim rolnictwie – projekcja na tle państw Unii Europejskiej
Creators: name: Kołodziejczak, Włodzimierz
name: Kołodziejczak, Włodzimierz
Publisher: name: Unknown
Year: 2016
Subjects: subject: Agribusiness
subject: Agricultural and Food Policy
subject: International Relations/Trade
subject: Labor and Human Capital
subject: rural areas
subject: labour market
subject: labour resources
subject: hidden unemployment
subject: potential unemployment
subject: structural unemployment
subject: / wieś
subject: rynek pracy
subject: bezrobocie ukryte
subject: bezrobocie potencjalne
subject: bezrobocie strukturalne

description: The aim of the paper was to assess the change in employment and unemployment in Poland, if we assume that the level of employment in Polish agriculture in relation to the rest of sectors of the economy would be similar to the average value in the European Union countries. The simulation of potential hidden unemployment in the agriculture was made. The Author assessed the scale of changes in the labour market, which would take place after adopting the assumptions of the simulation with respect to the base state. An attempt to decompose the potential hidden unemployment to its cyclical and structural component was also made. The phenomenon of hidden unemployment is geographically diversified, but it is possible to reduce its level in all voivodships if new jobs outside the agriculture will be created. In a long-time perspective demographic changes would be decisive to this process, and current surplus of employment in the agriculture would become the chance to top up the deficit in this field in non-agricultural sectors. / Synopsis. Celem artykułu było oszacowanie zmian zatrudnienia i bezrobocia w Polsce przy założeniu, że poziom zatrudnienia w rolnictwie polskim w relacji do pozostałych sektorów gospodarki byłby zbliżony do średniej obliczonej dla państw Unii Europejskiej. Przeprowadzono projekcję bezrobocia ukrytego potencjalnego w rolnictwie, dokonano oceny skali zmian na rynku pracy, jakie musiałyby nastąpić po spełnieniu przyjętych założeń projekcji w odniesieniu do stanu wyjściowego oraz podjęto próbę dekompozycji bezrobocia ukrytego potencjalnego na składnik cykliczny i strukturalny. Zjawisko bezrobocia ukrytego jest zróżnicowane terytorialnie, jednak we wszystkich województwach możliwe jest zmniejszenie jego poziomu, jeżeli powstaną nowe miejsca pracy poza rolnictwem. Długookresowo decydujące mogą okazać się zmiany demograficzne, a obecne nadwyżki zatrudnienia w rolnictwie mogą stać się szansą na uzupełnienie niedoborów występujących w tym zakresie w sektorach pozarolniczych.
title: A critical investigation and re-assessment of the composition history of J.S. Bach's 5th suite for unaccompanied violoncello, BWV 1011
Creators: name: Hill, Andrew John
Publisher: name: The Open University
Year: 2012

description: The research which led to the writing of this thesis started from the authors dissatisfaction with the available editions of Bach's Cello Suites. Questions could not be answered concerning the quality and accuracy of the text, compounded by uncertainty about performance practice in Bach S circle. Nothing but a fundamental and comprehensive return to the roots of the problem, i.e. to the sources themselves, could help to achieve an understanding of the text which would be sufficient to perform and teach these works.

 In order to achieve the level of analytical detail needed to satisfy the objectives of this research, it was decided to select the 5th Cello Suite BWV 1011 from the set of six Cello Suites as the main subject of this study. BWV 1011 is especially interesting for this study for two reasons. Firstly BWV 1011 is written in scordatura in three of the surviving sources, providing much information about the copyists themselves and contemporary performance practice. Secondly, there exists an autograph additional source by Bach of this work transcribed for lute (BWV 995), bringing extra information about Bach's intentions.

 After an introduction to the sources of the Cello Suites and of related works for violin and lute, this thesis describes in detail all of the differences between the sources in the notes, articulation and ornaments, drawing conclusions about the habits and relative reliability of the copyists and of Bach himself, and accumulates information about performance practice.

 Finally, conclusions are drawn about the relative reliability and importance at each source, leading to the conclusion that the copy by Anna Magdalena Bach may be the least reliable, which is significant for cellists and editors because all of the most frequently used modern editions are mainly based on Anna Magdalena's copy.
Cause-and-effect of linear mechanisms sustaining wall turbulence
Creators: name: Lozano-Durán, Adrián
name: Constantinou, Navid C.
name: Nikolaidis, Marios-Andreas
name: Karp, Michael
Publisher: name: arXiv
Year: 2020
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: Despite the nonlinear nature of turbulence, there is evidence that part of the energy-transfer mechanisms sustaining wall turbulence can be ascribed to linear processes. The different scenarios stem from linear stability theory and comprise exponential instabilities, neutral modes, transient growth from non-normal operators, and parametric instabilities from temporal mean-flow variations, among others. These mechanisms, each potentially capable of leading to the observed turbulence structure, are rooted in theoretical and conceptual arguments. Whether the flow follows any or a combination of them remains elusive. Here, we evaluate the linear mechanisms responsible for the energy transfer from the streamwise-averaged mean-flow ($\bf U$) to the fluctuating velocities ($\bf u'$). We use cause-and-effect analysis based on interventions. This is achieved by direct numerical simulation of turbulent channel flows at low Reynolds number, in which the energy transfer from $\bf U$ to $\bf u'$ is constrained to preclude a targeted linear mechanism. We show that transient growth is sufficient for sustaining realistic wall turbulence. Self-sustaining turbulence persists when exponential instabilities, neutral modes, and parametric instabilities of the mean flow are suppressed. We further show that a key component of transient growth is the Orr/push-over mechanism induced by spanwise variations of the base flow. Finally, we demonstrate that an ensemble of simulations with various frozen-in-time $\bf U$ arranged so that only transient growth is active, can faithfully represent the energy transfer from $\bf U$ to $\bf u'$ as in realistic turbulence. Our approach provides direct cause-and-effect evaluation of the linear energy-injection mechanisms from $\bf U$ to $\bf u'$ in the fully nonlinear system and simplifies the conceptual model of self-sustaining wall turbulence.
title: Crime, policing and control in Leeds, c1830-1890
Creators: name: Churchill, David Christopher
Publisher: name: The Open University
Year: 2013

description: This thesis analyses policing and crime control in nineteenth-century England, through a case study of Leeds. It challenges the notion - central to traditional interpretations of criminal justice history - that the new police forces assumed near-monopolistic control over the governance of crime shortly after their foundation. The opening chapters analyse organisational change in the local police establishment, and explore the condition of the men who served in the force. There follows an extensive discussion of police priorities and the impact of policing upon property crime and street order. This section argues that the new police experienced considerable difficulties in suppressing theft, and that their most tangible successes came in regulating traffic problems, street `nuisances', and offences of recreational excess and moral transgression. The remainder of the thesis explores how the response to crime was shared between state and civil society in the Victorian city. Chapter four reconstructs a patchwork of organisations - including associational, voluntary and private bodies - which were responsible for aspects of urban policing and prosecution in this period. It also, however, begins to explore more dispersed tactics of civilian crime control, by recovering evidence of Victorian domestic and commercial security. The subsequent two chapters continue this enquiry, assessing the civilian contribution to the apprehension of offenders, criminal investigation, and the resolution of criminal encounters, both within and outside the courts. Together, these three chapters reveal how the public were intimately involved in dealing with crime in this period, and how their contributions were variously encouraged and censured by the police and press. The thesis concludes with a broad reassessment of the nineteenth-century `police settlement', and a reflection upon the issues of civilian agency and social relations which it raises.
Observational constraints on complex quintessence with attractive self-interaction
Creators: name: Carvente, Belen
name: Jaramillo, Víctor
name: Escamilla-Rivera, Celia
name: Núñez, Darío
Publisher: name: arXiv
Year: 2020
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: In this paper we consider that dark energy could be described solely by a complex scalar field with a Bose-Einstein condensate-like potential (denoted as CSFDE), that is, with a self-interaction and a mass term. In particular, we analyse a solution which in a fast oscillation regime at late-times behaves as a Cosmological Constant. Our proposal adequately describes the standard homogeneous and flat Fridman dynamics, furthermore, in this quintessence--complex scalar field scenario it is possible to mimic the dynamics related to dark energy. However, when the precision cosmological tests are implemented in this landscape, the generic Equation-of-State derived for this model in a restricted regime of a_i (which corresponds to the scale factor at which the scalar field turns on), cannot be constrained by late-time current observations, since the analysis constraints solely the scalar field parameters within values ruled out by the theoretical model. This result is a clear hint to consider future CSFDE models with, for instance, two scalar fields in order to study the early-time dynamics of the Universe.
description: 9 pages; accepted by Monthly Notices of the Royal Astronomical Society
On the edge of the set of no-signaling assemblages
Creators: name: Banacki, Michał
name: Rodríguez, Ricard Ravell
name: Horodecki, Paweł
Publisher: name: arXiv
Year: 2020
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Following recent advancements, we consider a scenario of multipartite postquantum steering and general no-signaling assemblages. We introduce the notion of the edge of the set of no-signaling assemblages and we present its characterization. Next, we use this concept to construct witnesses for no-signaling assemblages without an LHS model. Finally, in the simplest nontrivial case of steering with two untrusted subsystems, we discuss the possibility of quantum realization of assemblages on the edge. In particular, for three-qubit states, we obtain a no-go type result, which states that it is impossible to produce assemblage on the edge using measurements described by POVMs as long as the rank of a given state is greater than or equal to 3.
description: We extended the proof of the main theorem, made some changes in the writing and changed the title
Time-resolved formation of excited atomic and molecular states in XUV-induced nanoplasmas in ammonia clusters
Creators: name: Michiels, Rupert
name: LaForge, Aaron Cristopher
name: Bohlen, Matthias
name: Callegari, Carlo
name: Clark, Andrew
name: von Conta, Aaron
name: Coreno, Marcello
name: Di Fraia, Michele
name: Drabbels, Marcel
name: Finetti, Paola
name: Huppert, Martin
name: de Lara, Veronica Oliver Álvarez
name: Plekan, Oksana
name: Prince, Kevin Charles
name: Stranges, Stefano
name: Svoboda, Vit
name: Wörner, Hans Jakob
name: Stienkemeier, Frank
Publisher: name: arXiv
Year: 2020
Subjects: subject: Atomic and Molecular Clusters (physics.atm-clus)
subject: FOS: Physical sciences

description: High intensity XUV radiation from a free-electron (FEL) was used to create a nanoplasma inside ammonia clusters with the intent of studying the resulting electron-ion interactions and their interplay with plasma evolution. In a plasma-like state, electrons with kinetic energy lower than the local collective Coulomb potential of the positive ionic core are trapped in the cluster and take part in secondary processes (e.g. electron-impact excitation/ionization and electron-ion recombination) which lead to subsequent excited and neutral molecular fragmentation. Using a time-delayed UV laser, the dynamics of the excited atomic and molecular states are probed from -0.1 ps to 18 ps. We identify three different phases of molecular fragmentation that are clearly distinguished by the effect of the probe laser on the ionic and electronic yield. We propose a simple model to rationalize our data and further identify two separate channels leading to the formation of excited hydrogen.
Lectures on string theory and cosmology
Creators: name: Danielsson, Ulf H.
Publisher: name: arXiv
Year: 2004
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: In these lectures I review recent attempts to apply string theory to cosmology, including string cosmology and various models of brane cosmology. In addition, the review includes an introduction to inflation as well as a discussion of transplanckian signatures. I also provide a critical discussion of the possible role of holography. The material is based on lectures given in January 2004 at the RTN String School in Barcelona, but also contain some additional material.
description: Lectures given in January 2004 at the RTN Barcelona String School, 50 pages, 9 figures
Extragalactic science at very high spectral resolution
Creators: name: Emsellem, Eric
Publisher: name: arXiv
Year: 2004
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: I briefly mention a few possible applications of very high spectral resolution spectroscopy with CRIRES to the study of nearby galaxies. This includes the fields of AGN, dynamically cold systems, super stellar and emission line clusters, and a more speculative program on the measurement of gravitational redshifts.
description: 8 pages, 5 figures, to be published in "High Resolution Infrared Spectroscopy in Astronomy", an ESO Workshop, Eds. Hans Ulrich Kaufl, Ralf Siebenmorgen and Alan Moorwood
The Bologna Complete Sample of Nearby Radio Sources
Creators: name: Giovannini, G.
name: Taylor, G. B.
name: Feretti, L.
name: Cotton, W. D.
name: Lara, L.
name: Venturi, T.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present a new, complete, sample of 95 radio sources selected from the B2 and 3CR catalogues, with z < 0.1. Since no selection effect on the core radio power, jet velocity, or source orientation is present, this sample is well suited for statistical studies. In this first paper we present the observational status of all sources on the parsec (mas) and kiloparsec (arcsec) scale; we give new parsec-scale data for 28 sources and discuss their parsec-scale properties. Combining these data with those in the literature, information on the parsec-scale morphology is available for a total of 53 radio sources with different radio power and kpc-scale morphology. We investigate their properties. We find a dramatically higher fraction of two-sided sources in comparison to previous flux limited VLBI surveys.
description: 29 pages, 21 figures - ApJ in press (10 Jan 2005 issue)
Uwarunkowania i ekonomiczne znaczenie produkcji ziarna kakaowca w krajach Afryki Zachodniej
Creators: name: Kramarz, Paulina
name: Kramarz, Paulina
Publisher: name: Unknown
Year: 2016
Subjects: subject: Agribusiness
subject: Crop Production/Industries
subject: International Development
subject: International Relations/Trade
subject: West Africa
subject: Ghana
subject: Cote d’Ivoire
subject: Nigeria
subject: cocoa production
subject: export monoculture
subject: / Afryka Zachodnia
subject: Wybrzeże Kości Słoniowej
subject: produkcja ziarna kakaowca
subject: monokultura eksportowa

description: The purpose of this paper was to describe economic significance of cocoa production in West Africa region. West African countries are the leading world’s producers of cocoa beans. Share in world merchandise trade of Ghana and Cote d’Ivoire exceeds 50%. Yields variability (susceptible of disease and changing weather conditions) can wield influence on economic situation in mentioned countries. However cocoa trade is ceaselessly the basis of economic development in this region. / Synopsis. Kraje Afryki Zachodniej takie jak Ghana, Wybrzeże Kości Słoniowej należą do największych światowych producentów i eksporterów ziarna kakaowca z łącznym udziałem przekraczającym 50% światowego eksportu. Zmienność wielkości produkcji w zależności od warunków klimatycznych i wewnętrznych problemów politycznych w gospodarkach uzależnionych od eksportu kakao, może stanowić przyczynę wahań koniunktury gospodarczej. Jednocześnie produkcja i obrót ziarnem kakaowca stanowi podstawę budowania strategii rozwoju tych terenów. Celem artykułu była analiza ekonomicznego znaczenia produkcji ziarna kakaowca w krajach Afryki Zachodniej.
Bar-driven fueling of galactic nuclei: a 2D view
Creators: name: Emsellem, Eric
Publisher: name: arXiv
Year: 2004
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: I discuss evidences for bar-driven gas fueling in the central regions of galaxies, focusing on scales down to about 10 pc. I thus mention the building of inner disks, and the link with resonances, as well as the corresponding kinematic signatures such as sigma-drops and counter-rotating nuclear disks as probed via integral-field spectroscopy.
description: 5 pages, 3 figures, to be published in "Penetrating Bars through Masks of Cosmic Dust - The Hubble Tuning Fork strikes a New Note", Ed. D.. Block, I. Puerari, K.C. Freeman, R. Groess, E.K. Block, Kluwer Pub., ApSS Library, 319
Galois theory for Hopf algebroids
Creators: name: Böhm, Gabriella
Publisher: name: arXiv
Year: 2004
Subjects: subject: Rings and Algebras (math.RA)
subject: Quantum Algebra (math.QA)
subject: FOS: Mathematics
subject: 16W30 (Primary); 13B05 (Secondary)

description: An extension B\subset A of algebras over a commutative ring k is an H-extension for an L-bialgebroid H if A is an H-comodule algebra and B is the subalgebra of its coinvariants. It is H-Galois if the canonical map A\otimes_B A\to A\otimes_L H is an isomorphism or, equivalently, if the canonical coring (A\otimes_L H:A) is a Galois coring. In the case of a Hopf algebroid H=(H_L,H_R,S) any H_R-extension is shown to be also an H_L-extension. If the antipode is bijective then also the notions of H_R-Galois extensions and of H_L-Galois extensions are proven to coincide. Results about bijective entwining structures are extended to entwining structures over non-commutative algebras in order to prove a Kreimer-Takeuchi type theorem for a finitely generated projective Hopf algebroid H with bijective antipode. It states that any H-Galois extension B\subset A is projective, and if A is k-flat then already the surjectivity of the canonical map implies the Galois property. The Morita theory, developed for corings by Caenepeel, Vercruysse and Wang, is applied to obtain equivalent criteria for the Galois property of Hopf algebroid extensions. This leads to Hopf algebroid analogues of results for Hopf algebra extensions by Doi and, in the case of Frobenius Hopf algebroids, by Cohen, Fishman and Montgomery.
description: 19 pages, no figure v2: Prop 3.1 added. v3: Prop 3.1 is withdrawn, without affecting any other result in the paper
La creazione di eurodollari.
Creators: name: MACHLUP, F.
Publisher: name: Moneta e Credito
Year: 2014
Subjects: subject: Eurodollars, euro-dollar market, growth
subject: E44

description: The article provides in-depth analysis of Euro-dollars and the “Euro-dollar market”. A lack of conceptual clarity has contributed to serious differences in the experts’ explanations of the fast growth of the Euro-dollar business and their evaluation of it. Hence, the author engages in an extensive conceptual and theoretical preparation on the pressing issues and controversies of the subject. While definitive conclusions are not reached on all the issues, the author attempts to show why some conclusions cannot be obtained on the basis of the empirical evidence available at present and why certain conceptual obscurities have led to dead ends. JEL: E44
description: Moneta e Credito, V. 24, N. 95 (1971)
Cykl koniunkturalny a wahania marż w polskim przemyśle spożywczym – wnioski z analizy spektralnej
Creators: name: Kufel, Justyna
name: Kufel, Justyna
Publisher: name: Unknown
Year: 2016
Subjects: subject: Agribusiness
subject: Agricultural and Food Policy
subject: Crop Production/Industries
subject: Demand and Price Analysis
subject: Food Consumption/Nutrition/Food Safety
subject: business cycles
subject: food sector
subject: markups
subject: spectral analysis
subject: / cykle koniunkturalne
subject: przemysł spożywczy
subject: marże
subject: analiza spektralna

description: In order to answer the question how market structures in the Polish food sector change along the business cycle, a relationship between real GDP in the period 2002-2013 and markups in the food sector was being tested. The methods used were as follows: correlations, cross-correlations and spectral analyses. Markups estimation taking account of marginal wage and overhead labor gave the most conclusive results. Cyclicality analysis allowed to state that the simultaneous variation between markups and business cycle is rather weak and negative, whereas markups peaks proceed peaks in business cycle by circa 2 years. / Synopsis. W celu odpowiedzi na pytanie, jak zmieniają się struktury rynku w polskim przemyśle spożywczym na tle wahań koniunktury, badano zależność między realnym PKB w latach 2002-2013 a marżami na poziomie zagregowanego przemysłu spożywczego. Oprócz analizy korelacyjnej i cross- korelacyjnej sięgnięto po narzędzia analizy spektralnej. Okazało się, że do najbardziej konkluzywnych wyników prowadzi estymacja marż z uwzględnieniem wynagrodzeń krańcowych i pracy nieprodukcyjnej. O ile analiza cykliczności pozwoliła stwierdzić, że równoczesna współzależność pomiędzy marżami a cyklem makroekonomicznym jest raczej słaba i ujemna, analiza wyprzedzeń i opóźnień wskazała, że szczyty marż poprzedzają szczyty koniunktury o ok. 2 lata.
Moltiplicazione e creazione di credito sul mercato dell'eurodollaro.
Creators: name: MAYER, H.
Publisher: name: Moneta e Credito
Year: 2014
Subjects: subject: Eurodollar market, credit supply, international finance, commercial banking
subject: E44, E51, F30, G21

description: The Euro-dollar market and in particular its impact on the world supply of credit is currently one of the most controversial and at the same time one of the most important topics of international finance. In an article published in September 1970, Machlup quite vehemently attacked much of the established thinking on this subject. The present paper argues that the analogy of a largely self-contained commercial banking system, which seems to lie at the basis of Machlup’s conceptual apparatus and analytical procedures, misses some of the most essential features of the Euro-dollar market. The author shows how the model of endogenous credit creation in a relatively closed national banking system must be modified in order to arrive at a more realistic appraisal of the Euro-dollar market’s credit-creating potential. JEL: E44, E51, F30, G21
description: Moneta e Credito, V. 24, N. 95 (1971)
Synthesis, characterization and hydroprocessing activity of modified transition metal phosphides
Creators: name: Abu, Ibrahim Inamah
Publisher: name: University of British Columbia
Year: 2011

description: In the present study, modified transition metal phosphides (bulk and supported catalysts) were prepared by the temperature programmed reduction (TPR) o f the corresponding phosphate precursors. The catalysts were characterized by X-ray diffraction (XRD), BET surface area, X-ray Photoelectron Spectroscopy (XPS), n-propyl amine chemisorption, CO uptake and Transmission Electron Microscopy (TEM). The activity of the prepared catalysts were then tested using 4,6-dimethyldibenzothiophene (4,6-DMDBT) for hydrodesulftrrisation (HDS) and carbazole for hydrodenitrogenation (HDN). As well, selected catalysts were tested using Light Gas Oil (LGO) derived from Athabasca bitumen. The HDS of 4,6-DMDBT showed that small amounts of Co used to modify Ni₂P and - MoP produced high selectivity for the direct desulfurization (DDS) product dimethylbiphenyl (DMBP). Co[sub 0.4]Ni₂P/Al₂O₃ showed high conversion with little cracked products. Supported Co[sub 0.4]Ni₂P/MCM showed almost complete conversion of 4,6-DMDBT with cracked products. Fluorination marginally increased the conversion of Co[sub 0.4]Ni₂P/Al₂O₃ with insignificant changes in the product distribution and the addition of Pt enhanced hydrogenation. The Ni[sub x]MoP (0 ≤ x ≤ 1.1) bulk series and supported Ni[sub O.33]MoP were tested for the hydrodenitrogenation (HDN) of carbazole at 523-583 K , 3 MPa and a range of space velocity of 8.6-61 x 10⁻² mol/h gcat. Ni[sub 0.07]MoP showed the highest bicyclohexyl (BCHX) selectivity among the Ni[sub x]MoP. The improved selectivity was attributed to the enhanced CO uptake and acidity that resulted in increased hydrogenation of carbazole to tetrehydrocarbazole which readily undergoes C-N bond cleavage on acid sites to produce BCHX. The HDS conversion obtained over the Ni[sub 0.33]MoP/Al₂O₃ using the LGO showed higher conversion than a commercial sulfided NiMo/AI₂O₃. The results from the present study therefore indicate that addition of small amounts of Co to metal phosphides is beneficial as enhanced selectivity to the hydrogenolysis route of 4,6-DMDBT is promoted. Similarly, addition of small amounts of Ni is beneficial for the HDN of carbazole. However in this case, the presence of Ni increased the hydrogenation of carbazole making it easier for the hydrogenolysis to occur.
Risparmi e investimenti nei principali paesi industriali.
Creators: name: LEONETTI, S.
Publisher: name: Moneta e Credito
Year: 2014

description: Nel presente lavoro vengono esaminati tre fenomeni strettamente connessi fra loro: la formazione del risparmio, la dissociazione fra risparmi e investimenti e i movimenti internazionali di capitali. Nella parte relativa alla formazione del risparmio vengono in particolare studiate, ricorrendo a stime economiche, le relazioni che intercorrono fra prelievo netto della Pubblica Amministrazione e il risparmio delle famiglie.
description: Moneta e Credito, V. 24, N. 95 (1971)
Hetrodinae
Creators: name: Hemp, Claudia
Publisher: name: Zenodo
Year: 2013
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Orthoptera
Tettigoniidae

description: Subfamily Hetrodinae
Most species of the Hetrodinae of Mt Kilimanjaro are probably not sufficiently represented in this study. First, species of this group are seasonal and secondly active at night. During the day the specimens hide themselves. Few specimens where obtained by chance by digging in the soil (e.g. Spalacomimus verruciferus), or were found crawling about after heavy rain (e.g. Spalacomimus stettinensis). Males may easily be collected at night when they cling to shrubs and small trees performing their loud monotonous calling song. However, only few savanna areas were screened at night.
description: Published as part of Hemp, Claudia, 2013, Annotated list of Ensifera (Orthoptera) and further records on Caelifera (Orthoptera) of Mt Kilimanjaro, Tanzania, pp. 301-342 in Zootaxa 3613 (4) on page 318, DOI: 10.11646/zootaxa.3613.4.1, http://zenodo.org/record/215952
title: Co- and self-regulation in a computer supported collaborative learning environment among Key Stage Three students
Creators: name: Olakanmi, Eunice Eyitayo
Publisher: name: The Open University
Year: 2011

description: The current understanding of students' co- and self-regulated learning behaviours during group learning is limited. Research on social cognitive models of self-regulated learning (SRL) focused primarily on understanding the processes that students use to self-regulate their learning and the subsequent benefits of SRL on learning and academic performance. Recently, sociocultural models have begun to argue that SRL is fostered, developed, and maintained within social contexts and as a result of interactions with teachers and peers. This research employs both social cognitive and sociocultural theories to investigate students' co- regulatory behaviours in a computer supported collaborative learning (CSCL) environment. The students worked in a computer based science simulation learning environment in which either self-regulatory prompts or co- and self- regulatory prompts were given. A longitudinal design methodology incorporating four studies was adopted.

The first study engaged two hundred and fourteen year 7 and 8 (11-13 year oIds) students to pilot the developed co-regulated strategies for learning questionnaire (CRSLQ) in a high school at Bedfordshire County in the United Kingdom. The remaining three studies engaged forty year 7 students (11-12 year olds) from the same school who were randomly assigned to either the experimental or the control group to work collaboratively on various science topics. Both quantitative and qualitative data analyses were used to examine the strategies that students used to co- regulate their learning processes over time. Results from the quantitative analysis revealed a statistically significant difference between the experimental and the control groups in the students' demonstration of co-regulated learning (CRL) behaviours over time. However, the results from the knowledge tests, although they suggested that learning had taken place, did not reach statistical significance. Findings from the qualitative analysis suggested between group and within group differences in the nature of co-regulatory processes that groups used to co-regulate their learning behaviour over the course of the three studies.

 Theoretically, this research extends individual models of SRL to include social forms of regulation arguing that students acquire, refine, and use different forms of regulatory processes to regulate their learning behaviours during collaborative learning. Finally, given the emphasis on SRL throughout the national curriculum this research supports the use of collaborative tasks in a technology-rich learning environment as an instructional method to increase students' regulatory processes. Some recommendations for future work are then made.
Lesson 1: The “History” of the Mexican Revolution
Creators: name: Ferrante, Lia
name: Fisher, Augustino
name: Fisher, Jackson
Publisher: name: The University of Texas at Austin
Year: 2024
Subjects: Mexican Revolution
Pancho Villa
Emiliano Zapata
Porfirio Diaz
Politics

description: This lesson provides a basic overview of the Mexican Revolution (1910-1920). Students will be able to identify the causes, course, and results of the Mexican Revolution through the exploration of key events and figures.
Rozwój biogospodarki opartej na wiedzy na Ukrainie – w kierunku systemu dyfuzji innowacji opartego o model poczwórnej helisy
Creators: name: Orlykovskyi, Mykola
name: Wicki, Ludwik
name: Maciejczak, Mariusz
name: Galchynska, Yulia
name: Orlykovskyi, Mykola
name: Wicki, Ludwik
name: Maciejczak, Mariusz
name: Galchynska, Yulia
Publisher: name: Unknown
Year: 2016
Subjects: subject: Agribusiness
subject: Agricultural and Food Policy
subject: Community/Rural/Urban Development
subject: Environmental Economics and Policy
subject: knowledge based bioeconomy
subject: innovation diffusion
subject: quadruple helix model
subject: Ukraine
subject: / biogospodarka oparta na wiedzy
subject: dyfuzja innowacji
subject: model poczwórnej helisy
subject: Ukraina

description: The paper is an attempts to assess the state of development of the knowledge based bio- economy in Ukraine. It also aims to evaluate how the current development complies in line with the concept of innovation diffusion model based on quadruple helix, and through, identify the most important factors strengthening and limiting this development. It was found that Ukraine has significant potential of production factors, in particular biomass, which so far is in limited scale used for the needs of a knowledge-based bioeconomy that is in infancy. The main reason is the low level of diffusion of innovation, mainly in the field of biotechnology. The current development in a low degree is based on the concept of quadruple helix, which on other hands also represents a high potential of growth for the coming years. Adequately oriented economic policies would greatly affect the development of a knowledge-based bioeconomy in Ukraine. / Synopsis. W artykule podjęto próbę oceny stanu rozwoju sektora biogospodarki opartej na wiedzy na Ukrainie. Jednocześnie dokonano oceny na ile obecny rozwój wpisuje się w koncepcję systemu dyfu- zji innowacji opartą na modelu poczwórnej helisy, oraz wskazano na najważniejsze czynniki sprzyjające i ograniczające ów rozwój. Stwierdzono, iż Ukraina posiada znaczący potencjał czynników wytwórczych dla produkcji biomasy, który dotychczas wykorzystywany jest na potrzeby biogospodarki opartej na wiedzy w znikomym stopniu, czego główną przyczyną jest niski stopień dyfuzji innowacji, głównie w zakresie biotechnologii. Obecny rozwój w niskim stopniu oparty jest na koncepcji poczwórnej helisy, co jednocześnie stanowi o dużym potencjale wzrostu na najbliższe lata. Właściwie ukierunkowana polityka gospodarcza może w znacznym stopniu wpłynąć na rozwój biogospodarki opartej na wiedzy na Ukrainie.
Il crescente distacco.
Creators: name: BAUER, P.T.
Publisher: name: Moneta e Credito
Year: 2014
Subjects: subject: I32, O19, F35
subject: Less developed, underdeveloped countries, poverty, widening gap, vicious cycle, foreign aid

description: In recent years references to a widening gap in incomes and living standards have replaced references to a vicious circle of poverty in discussions of the position and prospects of underdeveloped or developing countries. Like its predecessor was before it, the widening gap theory is linked to important corollaries for policy, notably insistence on the continuation and expansion of large-scale foreign aid. In the present paper it is argued that, although the shortcomings of the notion of the ever-widening gap cannot be so easily and immediately exposed as those of the thesis of the vicious circle of poverty, the idea of the widening gap is no more illuminating and can not serve as bases of sensible discussion, let alone of ration proposals for policy. The author demonstrates some of the major limitations, both conceptual and statistical, of the theory. JEL: I32, O19, F35
description: Moneta e Credito, V. 24, N. 96 (1971)