cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Effects of the core radius of an isothermal ellipsoidal gravitational lens on the caustics and the critical curves
Creators: name: Asada, Hideki
Publisher: name: arXiv
Year: 2004
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We study the effect of the core radius of an isothermal ellipsoidal gravitational lens on the caustics and the critical curves. We derive an analytic expression of the caustics for an isothermal ellipsoidal gravitational lens via a sixth-order algebraic equation. Since the expression is too long, by using another method we obtain a parametric representation of the critical curves in order to show analytically that there exist three cases: There are two curves for a small core radius, one for a quite large one, and no curves appear for an extremely large one, though the latter two cases are not realistic. The caustics are represented also by the same parameter.
description: 4 pages; accepted for publication in A&A
Beware of commonly used approximations I: errors in forecasts
Creators: name: Bellomo, Nicola
name: Bernal, José Luis
name: Scelfo, Giulio
name: Raccanelli, Alvise
name: Verde, Licia
Publisher: name: arXiv
Year: 2020
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: In the era of precision cosmology, establishing the correct magnitude of statistical errors in cosmological parameters is of crucial importance. However, widely used approximations in galaxy surveys analyses can lead to parameter uncertainties that are grossly mis-estimated, even in a regime where the theory is well understood (e.g., linear scales). These approximations can be introduced at three different levels: in the form of the likelihood, in the theoretical modelling of the observable and in the numerical computation of the observable. Their consequences are important both in data analysis through e.g., Markov Chain Monte Carlo parameter inference, and when survey instrument and strategy are designed and their constraining power on cosmological parameters is forecasted, for instance using Fisher matrix analyses. In this work, considering the galaxy angular power spectrum as the target observable, we report one example of approximation for each of such three categories: neglecting off-diagonal terms in the covariance matrix, neglecting cosmic magnification and using the Limber approximation on large scales. We show that these commonly used approximations affect the robustness of the analysis and lead, perhaps counter-intuitively, to unacceptably large mis-estimates of parameters errors (from few~$10\%$ up to few~$100\%$) and correlations. Furthermore, these approximations might even spoil the benefits of the nascent multi-tracer and multi-messenger cosmology. Hence we recommend that the type of analysis presented here should be repeated for every approximation adopted in survey design or data analysis, to quantify how it may affect the results. To this aim, we have developed \texttt{Multi\_CLASS}, a new extension of \texttt{CLASS} that includes the angular power spectrum for multiple (galaxy and other tracers such as gravitational waves) populations.
description: 43 pages, 9 figures. Matches the published version. \texttt{Multi\_CLASS} is now available at https://github.com/nbellomo/Multi_CLASS
Les transactions internationales des Estats-Units (1946-1968).
Creators: name: MOSSE', R.
Publisher: name: Moneta e Credito
Year: 2014
Subjects: subject: US balance of payments, deficit, international transactions, accounts
subject: F31, F32, F34

description: In spite of the extensive literature on the deficit in the US balance of payments, there is a great deal of confusion on the subject. In the present article, the authors propose to concentrate on the presentation of the facts from 1946 to 1968 in a form which will permit of a searching economic analysis. This approach brings out a better understanding of the transactions between the United States and the rest of the world. This method involves the use of several accounts and sub-accounts as well as the calculation of different types of balances. Three main types of accounts are examined separately: the current transactions account; the capital transactions account; and the account for settlements or offsetting transactions. JEL: F31, F32, F34
description: Moneta e Credito, V. 22, N. 86 (1969)
Inversion formula for determining parameters of an astrometric binary
Creators: name: Asada, Hideki
name: Akasaka, Toshio
name: Kasai, Masumi
Publisher: name: arXiv
Year: 2004
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: It is believed that some numerical technique must be employed for the determination of the system parameters of a visual binary or a star with a planet because the relevant equations are not only highly nonlinear but also transcendental owing to the Kepler's equation. Such a common sense, however, is not true; we discover an analytic inversion formula, in which the original orbital parameters are expressed as elementary functions of the observable quantities such as the location of four observed points and the time interval between these points. The key thing is that we use the time interval but not the time of each observation in order to avoid treating the Kepler's equation. The present formula can be applied even in cases where the observations cover a short arc of the orbit during less than one period. Thus the formula will be useful in the future astrometric missions such as SIM, GAIA and JASMINE.
description: 8 pages; accepted for publication in PASJ
Quantum memory enhanced dissipative entanglement creation in non-equilibrium steady states
Creators: name: Heineken, Daniel
name: Beyer, Konstantin
name: Luoma, Kimmo
name: Strunz, Walter T.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: This Article investigates dissipative preparation of entangled non-equilibrium steady states (NESS). We construct a collision model where the open system consists of two qubits which are coupled to heat reservoirs with different temperatures. The baths are modeled by sequences of qubits interacting with the open system. The model can be studied in different dynamical regimes: with and without environmental memory effects. We report that only a certain bath temperature range allows for entangled NESS. Furthermore, we obtain minimal and maximal critical values for the heat current through the system. Surprisingly, quantum memory effects play a crucial role in the long time limit. First, memory effects broaden the parameter region where quantum correlated NESS may be dissipatively prepared and, secondly, they increase the attainable concurrence. Most remarkably, we find a heat current range that does not only allow but guarantees that the NESS is entangled. Thus, the heat current can witness entanglement of non-equilibrium steady states.
Impact of Community-led Action Research on Production Decisions and Food Adjustment Strategies in a Grain-Producing Village in Northwest Bangladesh
Creators: name: Pasa, Md. Kamal
name: Rahman, Md. Matiur
name: Diaz, Catalina P.
name: Maksurat, Shejuti Nure
name: Palis, Florencia G.
name: Custodio, Pam
name: Pasa, Md. Kamal
name: Rahman, Md. Matiur
name: Diaz, Catalina P.
name: Maksurat, Shejuti Nure
name: Palis, Florencia G.
name: Custodio, Pam
Publisher: name: Unknown
Year: 2015
Subjects: subject: Farm Management
subject: Food Security and Poverty
subject: Research Methods/ Statistical Methods
subject: gono-gobeshona
subject: gendered decision
subject: food adjustment
subject: participatory action research

description: The purpose of the paper is to describe the impact of community-led action research on food security and poverty alleviation on the production decisions and food adjustment strategies of farmers in a grain-producing village in northwest Bangladesh. The study used a mixed method approach with 80 respondents for the quantitative part (survey), which are distributed equally between gono-gobeshona participants and non-participant groups, and 30 for the qualitative part (10 in-depth interviews, 4 key informant interviews, 4 focus groups, and 10 case studies). Survey responses were analyzed using SPSS software and content analysis framework was used for qualitative data. The findings show that far more households who participated in the from the gono-gobeshona make joint decisions (by both husband and wife) in various aspects of production than non-participants. Women as authority figures were higher in number among the participants than the non-participants and more households in the non-participant group considered the husband as the authority figure. Finally, the community-led action research process met sustainability features and was inclusive across social positions.
Perchè differenti tassi di sviluppo?
Creators: name: THIRLWALL, A.P.
Publisher: name: Moneta e Credito
Year: 2014

description: L’articolo contiene la critica dell’autore al lavoro di Denison. Dal lavoro di Denison in sostanza emerge che la “produttività residuale” è la maggiore “fonte” delle differenze dei livelli di reddito per occupato tra Europa ed America, mentre i progressi tecnici ( in senso lato) sono stati per importanza la prima “fonte” di sviluppo del reddito per occupato nel Regno Unito e la secondo, dopo le economie di scala, nell’europa nord-occidentale.
description: Moneta e Credito, V. 22, N. 86 (1969)
Aspetti monetari dell'entrata della Gran Bretagna nella Comunità Economica Europea.
Creators: name: TRIFFIN, R.
Publisher: name: Moneta e Credito
Year: 2014

description: Nell’earticolo l’autore sostiene che contrariamente ad un’opinione diffusa, gli interventi del Fondo Monetario di riserva dovrebbero ridurre ed eliminare rapidamente la necessità delle ripetute operazioni di sostegno finanziario di cui l’Europa, senza rendersene conto , si è assunto di fatto l’intero onere con i suoi crediti indiretti per il tramite degli Stati Uniti e del Fondo Monetario Internazionale e con il suo aiuto indiretto l’Inghilterra.
description: Moneta e Credito, V. 22, N. 87 (1969)
On the asymptotics of quantum SU(2) representations of mapping class groups
Creators: name: Freedman, Michael
name: Krushkal, Vyacheslav
Publisher: name: arXiv
Year: 2004
Subjects: subject: Quantum Algebra (math.QA)
subject: Geometric Topology (math.GT)
subject: FOS: Mathematics

description: We investigate the rigidity and asymptotic properties of quantum SU(2) representations of mapping class groups. In the spherical braid group case the trivial representation is not isolated in the family of quantum SU(2) representations. In particular, they may be used to give an explicit check that spherical braid groups and hyperelliptic mapping class groups do not have Kazhdan's property (T). On the other hand, the representations of the mapping class group of the torus do not have almost invariant vectors, in fact they converge to the metaplectic representation of SL(2,Z) on L^2(R). As a consequence we obtain a curious analytic fact about the Fourier transform on the real line which may not have been previously observed.
Les problémes de l'adhésion de la Grande-Bretagne au Marchè Commun en ce qui concerne l'agriculture.
Creators: name: PISANI, E.
Publisher: name: Moneta e Credito
Year: 2014

description: Nell’articolo, l’autore cerca di chiarire due problemi fondamentali. Se il divario nello sviluppo dei paesi industrializzati nel dopoguerra fosse temporaneo o se vi fossero anche fattori casuali che potrebbero riprodurlo o perpetuarlo ed in secondo luogo comprendere se la sua recente riduzione sia avvenuta per fattori “ naturali” o per deliberati interventi di politica economica.
description: Moneta e Credito, V. 22, N. 87 (1969)
Teoria dello sviluppo economico e il caso italiano.
Creators: name: VACIAGO, G.
Publisher: name: Moneta e Credito
Year: 2014
Subjects: subject: Italy, growth rate differentials, labour supply, economies of scale, Italian experience, elasticity, convergence
subject: J22, J20, O11, O40

description: In this brief survey, the three most recent contributions to the discussion of growth rate differentials are considered. All three, using different arguments, arrive at the conclusion that such a disparity should be considered as exceptional. Some argue, on the one hand, that the highest growth rates have been reached thanks to a very elastic labour supply. On the other hand, it has been maintained that the highest growth rates attained in the postwar period can be explained as being due to exceptional opportunities for the reallocation of resources and economies of scale. Using the recent Italian experience, the author argues that these assumptions of convergence are somewhat dubious. Rather, in the long run, fast growing countries will likely reach a stage at which the sectors with a low productivity level will begin to increase again. It is for this reason, more than for the effects of the elasticity of the labour supply, that the convergence of the growth rate assumption would appear to be confirmed. JEL: J22, J20, O11, O40
description: Moneta e Credito, V. 22, N. 87 (1969)
Transforming task representations to perform novel tasks
Creators: name: Lampinen, Andrew K.
name: McClelland, James L.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Machine Learning (cs.LG)
subject: Artificial Intelligence (cs.AI)
subject: Machine Learning (stat.ML)
subject: FOS: Computer and information sciences
subject: I.2.0; I.2.6

description: An important aspect of intelligence is the ability to adapt to a novel task without any direct experience (zero-shot), based on its relationship to previous tasks. Humans can exhibit this cognitive flexibility. By contrast, models that achieve superhuman performance in specific tasks often fail to adapt to even slight task alterations. To address this, we propose a general computational framework for adapting to novel tasks based on their relationship to prior tasks. We begin by learning vector representations of tasks. To adapt to new tasks, we propose meta-mappings, higher-order tasks that transform basic task representations. We demonstrate the effectiveness of this framework across a wide variety of tasks and computational paradigms, ranging from regression to image classification and reinforcement learning. We compare to both human adaptability and language-based approaches to zero-shot learning. Across these domains, meta-mapping is successful, often achieving 80-90% performance, without any data, on a novel task, even when the new task directly contradicts prior experience. We further show that meta-mapping can not only generalize to new tasks via learned relationships, but can also generalize using novel relationships unseen during training. Finally, using meta-mapping as a starting point can dramatically accelerate later learning on a new task, and reduce learning time and cumulative error substantially. Our results provide insight into a possible computational basis of intelligent adaptability and offer a possible framework for modeling cognitive flexibility and building more flexible artificial intelligence systems.
description: 45 pages
Interval Temporal Logic Decision Tree Learning
Creators: name: Brunello, Andrea
name: Sciavicco, Guido
name: Stan, Ionel Eduard
Publisher: name: arXiv
Year: 2020
Subjects: subject: Logic in Computer Science (cs.LO)
subject: FOS: Computer and information sciences

description: Decision trees are simple, yet powerful, classification models used to classify categorical and numerical data, and, despite their simplicity, they are commonly used in operations research and management, as well as in knowledge mining. From a logical point of view, a decision tree can be seen as a structured set of logical rules written in propositional logic. Since knowledge mining is rapidly evolving towards temporal knowledge mining, and since in many cases temporal information is best described by interval temporal logics, propositional logic decision trees may evolve towards interval temporal logic decision trees. In this paper, we define the problem of interval temporal logic decision tree learning, and propose a solution that generalizes classical decision tree learning.
Lower Bounds for Real Solutions to Sparse Polynomial Systems
Creators: name: Soprunova, Evgenia
name: Sottile, Frank
Publisher: name: arXiv
Year: 2004
Subjects: subject: Algebraic Geometry (math.AG)
subject: Combinatorics (math.CO)
subject: FOS: Mathematics
subject: 14M25, 06A07, 52B20

description: We show how to construct sparse polynomial systems that have non-trivial lower bounds on their numbers of real solutions. These are unmixed systems associated to certain polytopes. For the order polytope of a poset P this lower bound is the sign-imbalance of P and it holds if all maximal chains of P have length of the same parity. This theory also gives lower bounds in the real Schubert calculus through sagbi degeneration of the Grassmannian to a toric variety, and thus recovers a result of Eremenko and Gabrielov.
description: 31 pages. Minor revisions
Household-Level Credit Constraints in Urban Ethiopia
Creators: name: Abbi M. Kedir
name: Ibrahim, Gamal
name: Abbi M. Kedir
name: Ibrahim, Gamal
Publisher: name: Unknown
Year: 2012
Subjects: subject: Community/Rural/Urban Development
subject: Public Economics
subject: Credit Policy
subject: Endogeneity
subject: Ethiopia-urban

description: There is a dearth of empirical evidence on the determinants of household credit constraints in Sub-Saharan Africa. Most studies have disproportionally focused either on household credit constraints in rural areas or credit constraints facing firms. There are also a number analytical problems linked with identifying credit constrained households. Using the Fourth Round Ethiopian Urban Household Survey conducted in 2000 which provides a unique set of variables in relation to access to credit, we extended the approach of Jappelli (1990) to identify credit constrained households directly. We find a high percentage of credit-constrained households. After controlling for potential endogeneity and selectivity bias, our econometric models showed that current household resources, number of dependants and location are significant correlates of credit constraints. Further, we discuss the policy implications of our findings.
description: Abbi M. Kedir, And Gamal Ibrahim_ Household-Level Credit Constraints in Urban Ethiopia
title: Hepatic eosinophilic infiltration mimicking metastases
Creators: name: Fernandéz González, Celia
Publisher: name: EURORAD
Year: 2024
Subjects: subject: Abdominal imaging
subject: Abdomen
subject: Liver
subject: CT
subject: MR
subject: Clinical Case

description: Clinical History: A 60-year-old patient with a history of locally advanced colorectal neoplasia and asthma. In a follow-up CT, small hypodense lesions distributed throughout the liver parenchyma were found. The patient was asymptomatic, and blood tests showed a normal level of transaminases, hypereosinophilia (7.3x109/L) and elevated IgE (2450 kU/L) levels.

description: 60 years, male
Preparation of AC/KOH and AC/Fe3O4/ZnO nanocomposite from waste rice straw for the removal of cyclophosphamide from aqueous solutions
Creators: name: Haghgoo, Ali Asghar
name: Cheraghi, Mehrdad
name: Sobhanardakani, Soheil
name: Lorestani, Bahareh
name: Izadkhah, Vida
Publisher: name: Taylor & Francis
Year: 2022
Subjects: subject: Biophysics
subject: Biochemistry
subject: Space Science
subject: Medicine
subject: Physiology
subject: FOS: Biological sciences
subject: Environmental Sciences not elsewhere classified
subject: Chemical Sciences not elsewhere classified
subject: Ecology
subject: Biological Sciences not elsewhere classified
subject: Inorganic Chemistry
subject: FOS: Chemical sciences
subject: Plasma Physics

description: In this study, rice straw was used for synthesizing AC/KOH and AC/Fe3O4/ZnO as fresh adsorbents for the elimination of Cyclophosphamide (CP) from water samples. In so doing, the crystalline form, the chemical compound and the morphology of the adsorbents were characterized utilizing scanning electron microscopy (SEM), X-ray diffraction (XRD) spectrometry, Fourier transform infrared spectroscopy (FTIR), vibrating sample magnetometry (VSM), pHpzc, and Brunauer, Emmett, and Teller (BET) methods. Then, the optimum conditions for removal efficiency of CP onto AC/Fe3O4/ZnO nanocomposite were obtained at CP concentration of 20 mg L−1, AC/Fe3O4/ZnO nanocomposite dose of 0.01 g, solution pH of 7, equilibrium time of 45 min, and temperature of 25 °C. The CP adsorption data was modeled by isotherm models (Langmuir, Freundlich, and Temkin) and kinetic models (pseudo-first-order, pseudo-second-order, and intraparticle diffusion) using the origin nonlinear software version 6.1. Based on the results obtained, the maximum adsorption capacities of CP on AC/KOH and AC/Fe3O4/ZnO were 185.6 and 224.3 mg g−1, respectively. In addition, the results of the desorption tests showed that AC/KOH and AC/Fe3O4/ZnO were comfortably regenerated using methanol and sodium hydroxide.
Assessment in a tribal college context : a case study of Northwest Indian College
Creators: name: Karlberg, Anne Marie
Publisher: name: University of British Columbia
Year: 2011

description: Approximately 32 tribal colleges are located on reservations in the United States. Their aim is to provide Native American students with a culturally relevant and meaningful post-secondary education. Assessment uses methods of applied research to improve student learning. The aim of this study is to advance theoretical and applied knowledge in the field of assessment within tribal colleges. This undertaking is noteworthy given that tribal colleges are vital to the development and future of Native American communities. I use a case study methodology to examine a specific assessment program that is being developed at Northwest Indian College (NWIC), a tribal college in Washington state. In this study, I provide responses to three research questions: (1) What criteria are best used to evaluate an assessment program in a tribal college context? (2) Which elements of the NWIC assessment program are most and least successful according to the evaluative criteria established in Research Question 1? and (3) What preconditions and other contextual factors contribute to the relative success or failure of different elements of the NWIC assessment program? I review the history of Native Americans in higher education, provide an overview and critique of the emerging assessment movement, and discuss the state of assessment within the tribal college system. This study demonstrates that assessment can be done in a tribal college context in a culturally respectful and meaningful way and provides insights into how this can be approached. My findings suggest that effective tribal college assessment programs use three types of information to assess student learning--direct indicators, indirect indicators, and institutional and community data--and assess each of these at the tribal community, college, program, and course levels. It is equally important to pay attention to the inputs into the assessment program (i.e., plans and resources) and how the assessment program is carried out. Furthermore, the intention of the assessment program is to impact the college's context. Articulating and revisiting the tribal college's mission--with its focus on the self-determination of Native peoples--is a critical initial step in the development of assessment programs that should be emphasized in this framework.
The Enabling Environment for Inclusive Agribusiness in Southeast Asia
Creators: name: Teng, Paul S.
name: Oliveros, Jurise A.P.
name: Teng, Paul S.
name: Oliveros, Jurise A.P.
Publisher: name: Unknown
Year: 2016
Subjects: subject: Agribusiness
subject: Agricultural and Food Policy
subject: inclusive development
subject: agribusiness linkages
subject: inclusive agribusiness
subject: agribusiness models
subject: agri-food sector policies

description: Smallholder farmers constitute a sizable subset of the population in the ASEAN region and therefore are important stakeholders to consider in realizing the broader goals of inclusive development and poverty reduction. Linking them to various agriculture-related activities across the value chain paves the pathway of opportunities to expand their access to markets and build capacities. As such, determining policy and institutional conditions that enable inclusive agribusiness development as well as key barriers to their engagement would provide greater leverage for smaller agribusiness players to move up the value chain. By reviewing the extant literature on agribusiness models, we provided a survey of the inclusive agribusiness structure most prevalent in the ASEAN region. The study draws from the “Hierarchy of Enabling Needs” model and socio-organizational structure model to offer an integrated conceptual framework that maps out the environment that facilitates stronger linkages and deeper inclusion of small-scale players in the agribusiness structure. To better situate the conditions of inclusive agribusiness, the sets of enablers are further assessed across varying country contexts. The paper suggests that there is no single model that could encapsulate deeper linkages in the sector. Notwithstanding ASEAN’s fundamental diversity, the region is bound by its outward looking and market-oriented policy frameworks that serve to enable pathways and corridors toward greater inclusiveness in the agribusiness sector.
Il controllo degli istituti finanziari in Gran Bretagna: problemi e proposte. (Regulation and control of the United Kingdom banking and financial structure)
Creators: name: WILSON, J.S.G.
Publisher: name: Moneta e Credito
Year: 2014
Subjects: subject: Financial regulation, bank regulation, UK, financial structure, control
subject: G18, G28

description: Britain has tended to avoid, except as a last resort, formal regulatory arrangements. Indeed, bank regulation so far has largely been by “suasion”, with no formal framework for bank examination and inspection. There seems now, however, to be an awakening interest in the possibility of a more comprehensive regulation of financial institutions, due in part to the splitting off a “secondary” banking system, and the emergence of a complex of parallel money markets. The present work analyses the regulation and control of the banking and financial structure in the United Kingdom. The author first briefly considers the extent of relevant legislation that is currently found on the statute books. The main objectives of any comprehensive legislation to regulate banks and similar financial institutions are then outlined. Finally, the appropriate legislation to achieve such objectives is considered. JEL: G18, G28
description: Moneta e Credito, V. 22, N. 87 (1969)
L'inflazione negli Stati Uniti dopo il 1965: un' interpretazione monetaria. (A monetary interpretation of the post-1965 inflation in the United States)
Creators: name: FAND, D.I.
Publisher: name: Moneta e Credito
Year: 2014
Subjects: subject: Inflation, monetary theory, monetary policy, fiscal policy, growth, policy implementation, US
subject: E31, E52, E62

description: One important assumption of non-monetary inflation theories is that the monetary theory of the “new economics” and the stabilisation theories followed since 1965 are basically sound. Accordingly, the ensuing inflation must be due to errors of implementation, whether committed by politicians or by the technicians. The implication of these theories is that the failure of the June 1968 tax action to stop the inflationary pressures thus far is somehow due to implementation errors, but does not reflect on the monetary actions taken since 1965. The present paper focuses on the monetary aspects of post-1965 inflation in the U.S.: Are the non-monetary inflation theories essentially correct in viewing the inflationary pressures in 1968 and 1969 as consequences of implementation errors committed in 1965 or 1966, at the time of the Vietnam escalation, and compounded by the delay in passing the surtax in 1967; or are they abstracting from the major factor in the current inflation - the extraordinary high rates of growth in the monetary aggregates since 1965, and especially the pronounced rise in the rate of monetary acceleration after the tax action in June 1968. JEL: E31, E52, E62
description: Moneta e Credito, V. 22, N. 88 (1969)
Sul problema di una maggiore flessibilità dei campi: definizioni, teorie, strategie.
Creators: name: MACHLUP, F.
Publisher: name: Moneta e Credito
Year: 2014
Subjects: subject: Exchange rate flexibility, pegs, parities, crawl, gliding parity, valuation
subject: E42, F33

description: The work represents an extensive survey of the issues related to the debate on the exchange rate system. The author make clarifications, proposes distinctions and warns against exaggerated claims in an effort to “clean up” the discussion in order to avoid confusion and provide sharper focus on the issues at hand. The topics dealt with are pegs and parities, alternative exchange rate systems, rate of crawl and width of band, greater flexibility, types of gliding-parity systems, flexible stable invariant, overvaluation undervaluation and the dilemma of advocacy. JEL: E42, F33
description: Moneta e Credito, V. 23, N. 89 (1970)
Sur la création d'un Fonds Européen de réserves.
Creators: name: TRIFFIN, R.
Publisher: name: Moneta e Credito
Year: 2014
Subjects: subject: Monetary integration, Common Market, monetary union, Europe, economic integration
subject: E42, F15, F36

description: The first stages in monetary integration, which is in any event essential to the survival of the Common Market, have already been outlined in a great deal of earlier work by the Commision of the European Communities, and particularly in its 1962 Action Programme and its Memorandum of 12 February to the Council, approved in broad outline by the Monetary Committee on 9 May of that year. The present article presents proposals which repeat, clarify and integrate into a coherent whole, suggestions which have already been sufficiently debated to allow Governments to proceed from discussion to decision and action. The monetary union of the six member states is first dealt with. The author then goes on to consider the entry of Great Britain into the Community. JEL: E42, F15, F36
description: Moneta e Credito, V. 23, N. 89 (1970)
Dissipative engineering of Gaussian entangled states in harmonic lattices with a single-site squeezed reservoir
Creators: name: Zippilli, Stefano
name: Vitali, David
Publisher: name: arXiv
Year: 2020
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We study the dissipative preparation of many-body entangled Gaussian states in bosonic lattice models which could be relevant for quantum technology applications. We assume minimal resources, represented by systems described by particle-conserving quadratic Hamiltonians, with a single localized squeezed reservoir. We show that in this way it is possible to prepare, in the steady state, the wide class of pure states which can be generated by applying a generic passive Gaussian transformation on a set of equally squeezed modes. This includes non-trivial multipartite entangled states such as cluster states suitable for measurement-based quantum computation.
description: typos corrected
Topological phase transition to Abelian anyon phases due to off-diagonal exchange interaction in the Kitaev spin liquid state
Creators: name: Takikawa, Daichi
name: Fujimoto, Satoshi
Publisher: name: arXiv
Year: 2020
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We investigate how the Kitaev spin liquid state described by Majorana fermions coupled with $Z_2$ gauge fields is affected by non-Kitaev interactions which exist in real candidate materials of the Kitaev magnet. It is found that the off-diagonal exchange interaction referred to as the $Γ'$ term dramatically changes the Majorana band structure in the case of the antiferromagnetic Kitaev interaction, and gives rise to a topological phase transition from a non-Abelian topological phase with the Chern number equal to $\pm 1$ to an Abelian phase with the Chern number equal to $\pm 2$, in which the $Z_{2}$ vortices behave as Abelian anyons. On the other hand, other non-Kitaev interactions such as the Heisenberg interaction and the $Γ$ term, only affect the bandwidth of the Majorana band as long as the spin liquid state is not destabilized.
description: 8 pages, 7 figures
Higher-rank graph C*-algebras: an inverse semigroup and groupoid approach
Creators: name: Farthing, Cynthia
name: Muhly, Paul S.
name: Yeend, Trent
Publisher: name: arXiv
Year: 2004
Subjects: subject: Operator Algebras (math.OA)
subject: FOS: Mathematics
subject: 46L05 (Primary) 20M18, 22A22 (Secondary)

description: We provide inverse semigroup and groupoid models for the Toeplitz and Cuntz-Krieger algebras of finitely aligned higher-rank graphs. Using these models, we prove a uniqueness theorem for the Cuntz-Krieger algebra.
description: 23 pages, uses XY-pic. Version published in Semigroup Forum
A new measurement of the Hubble constant using Type Ia supernovae calibrated with surface brightness fluctuations
Creators: name: Khetan, N.
name: Izzo, L.
name: Branchesi, M.
name: Wojtak, R.
name: Cantiello, M.
name: Murugeshan, C.
name: Agnello, A.
name: Cappellaro, E.
name: Della Valle, M.
name: Gall, C.
name: Hjorth, J.
name: Benetti, S.
name: Brocato, E.
name: Burke, J.
name: Hiramatsu, D.
name: Howell, D. Andrew
name: Tomasella, L.
name: Valenti, S.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We present a new calibration of the peak absolute magnitude of SNe Type Ia based on the Surface Brightness Fluctuations (SBF) method, aimed at measuring the value of the Hubble constant. We build a sample of calibrating anchors consisting of 24 SNe hosted in galaxies having SBF distance measurements. Applying a hierarchical Bayesian approach, we calibrate the SNe luminosity and extend it into the Hubble flow by using a sample of 96 SNe Ia in the redshift range $0.02 < z < 0.075$, extracted from the Combined Pantheon Sample. We estimate a value of $H_0 = 70.50 \pm 2.37(stat) \pm 3.38(sys)$ $\text{km}\ \text{s}^{-1}\ \text{Mpc}^{-1}$ (i.e. $3.4\% stat, 4.8\% sys$), which is in agreement with the value obtained using the tip of the red giant branch calibration, and consistent within the errors with the value obtained from SNe Type Ia calibrated with Cepheids and the one inferred from the analysis of the cosmic microwave background. We find that the SNe Ia distance moduli calibrated with SBF are on average larger by 0.07 mag than the ones calibrated with Cepheids. Our results point to possible differences among SNe in different types of galaxies, which could originate from different local environments and/or SNe Ia progenitor properties. Sampling different host galaxy type, SBF offers a complementary approach to Cepheids which is important in addressing possible systematics. As the SBF method has the ability to reach larger distances than Cepheids, the impending entry of LSST and JWST into operation will increase the number of SNe Ia hosted in galaxies where SBF distances can be measured, making SBF measurements attractive for improving the calibration of SNe Ia, and in the estimation of $H_0$.
description: 22 pages, 14 figures, 9 tables. Comments are very welcome
title: Heterogeneous beliefs, relative wealth concerns, and Sharpe ratios
Creators: name: Dubey, Ashim
Publisher: name: TU Wien
Year: 2014
Subjects: subject: heterogeneous beliefs
subject: relative wealth index
subject: Sharpe ratio
subject: state price densities

description: This work considers a continuous time pure exchange economy where the agents have heterogeneous beliefs about the aggregate dividend pro- cess and also care about relative wealth concerns. It is shown, analytically, that in the special case where the agents have logarithmic utility, the rel- ative wealth concerns do not in uence the equilibrium. Another special case is considered where the agents' risk aversion parameter is 2 and it is shown that the Sharpe ratios are time-dependent and the final wealth state dependent.
pp Elastic Scattering at LHC in Near Forward Direction
Creators: name: Islam, M. M.
name: Luddy, R. J.
name: Prokudin, A. V.
Publisher: name: arXiv
Year: 2004
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We predict pp elastic differential cross section at LHC at the c.m. energy sqrt(s) = 14 TeV and momentum transfer range |t| = 0 - 10 GeV^2, which is planned to be measured by the TOTEM group. The field theory model underlying our phenomenological investigation describes the nucleon as a composite object with an outer cloud of quark-antiquark condensate, an inner core of topological baryonic charge, and a still smaller quark-bag of valence quarks. The model satisfactorily describes the asymptotic behavior of total cross section as a function of s and the real to imaginary ratio of the forward scattering amplitude as a function of s. It also describes well the the measured antiproton-proton elastic differential cross sections at sqrt(s)= 546 GeV, 630 GeV, and 1.8 TeV. The large |t| elastic amplitude of the model incorporates the BFKL Pomeron in next to leading order approximation, the perturbative dimensional counting behavior, and the confinement of valence quarks in a small region within the nucleon.
description: 8 pages including 5 figures
Consumer Preference of Table Banana Quality by Income Groups in the Philippines: Hedonic Price Analysis
Creators: name: Basan, Romiel John P.
name: Basan, Romiel John P.
Publisher: name: Unknown
Year: 2017
Subjects: subject: Demand and Price Analysis
subject: banana quality
subject: consumer preference
subject: income groups
subject: hedonic price analysis

description: Income has been found to be a strong determinant of consumers’ demand for agricultural commodity such as banana, and has been strongly correlated with consumer preference. However, literature on consumer preferences vis-à-vis fruit quality as segmented by income group is lacking. This study aims to determine the table banana preferred by consumers in low-, middle-, and high-income groups and its effect on price. Descriptive statistics and hedonic regression were used to analyze the data. Results revealed that high-income consumers were more discriminating than low- and middle-income consumers in terms of cluster size and fruit length. This means that high-income consumers are willing to pay premium price for banana quality. Consumer under different income class in the society have their own preferences when making purchase decisions with respect to the embodied attributes of banana. A well-informed clientele can be chosen and proper market segmentation and marketing plan can be prepared. Taking into account quality considerations will enable both farmers and traders to further increase their profit.
La nuova era dei diritti speciali di prelievo.
Creators: name: EMMINGER, O.
Publisher: name: Moneta e Credito
Year: 2014

description: All’interno dei singoli paesi, l’assoluta libertà nelle emissioni di banconote e nella creazione di moneta scritturale da parte di banche private si è trasformata gradualmente nel corso degli ultimi cento anni in un sistema in cui la creazione di moneta è controllata dalla banca centrale nell’intento di favorire una maggiore stabilità economica. Questa azione di deliberato controllo comincia ora ad estendersi nell’ambito internazionale.
description: Moneta e Credito, V. 23, N. 89 (1970)
Riserve di liquidità, movimenti di capitali e parità mobili.
Creators: name: MASERA, F.
Publisher: name: Moneta e Credito
Year: 2014

description: L’articolo analizza le recenti vicende monetarie, le conseguenze economiche della creazione dei DSP nel quadro del sistema a due settori dell’oro, i movimenti speculativi di capitali e il meccanismo dei cambi con l’estero
description: Moneta e Credito, V. 23, N. 89 (1970)
La misura della svalutazione.
Creators: name: CAMPOLONGO, A.
Publisher: name: Moneta e Credito
Year: 2014

description: I governi francese e tedesco, nei comunicati ufficiali dell’agosto e dell’ottobre 1969, relativi alle modificazioni di parità delle loro monete, sono incorsi in un errore di aritmetica: se una grandezza passa da cento a centodieci, oppure da cento a novanta, essa è variata del dieci per cento, non del nove o dell’undici per cento.
description: Moneta e Credito, V. 23, N. 89 (1970)
Comparative Roles of Charge, $π$ and Hydrophobic Interactions in Sequence-Dependent Phase Separation of Intrinsically Disordered Proteins
Creators: name: Das, Suman
name: Lin, Yi-Hsuan
name: Vernon, Robert M.
name: Forman-Kay, Julie D.
name: Chan, Hue Sun
Publisher: name: arXiv
Year: 2020
Subjects: subject: Biomolecules (q-bio.BM)
subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Biological sciences
subject: FOS: Physical sciences

description: Endeavoring toward a transferable, predictive coarse-grained explicit-chain model for biomolecular condensates underlain by liquid-liquid phase separation (LLPS), we conducted multiple-chain simulations of the N-terminal intrinsically disordered region (IDR) of DEAD-box helicase Ddx4, as a test case, to assess the roles of electrostatic, hydrophobic, cation-$π$, and aromatic interactions in amino acid sequence-dependent LLPS. We evaluated 3 residue-residue interaction schemes with a shared electrostatic potential. Neither a common hydrophobicity scheme nor one augmented with arginine/lysine-aromatic cation-$π$ interactions consistently accounted for the experimental LLPS data on the wildtype, a charge-scrambled, an FtoA, and an RtoK mutant of Ddx4 IDR. In contrast, interactions based on contact statistics among folded globular protein structures reproduce the overall experimental trend, including that the RtoK mutant has a much diminished LLPS propensity. Consistency between simulation and LLPS experiment was also found for RtoK mutants of P-granule protein LAF-1, underscoring that, to a degree, the important LLPS-driving $π$-related interactions are embodied in classical statistical potentials. Further elucidation will be necessary, however, especially of phenylalanine's role in condensate assembly because experiments on FtoA and YtoF mutants suggest that LLPS-driving phenylalanine interactions are significantly weaker than those posited by common statistical potentials. Protein-protein electrostatic interactions are modulated by relative permittivity, which depends on protein concentration. Analytical theory suggests that this dependence entails enhanced inter-protein interactions in the condensed phase but more favorable protein-solvent interactions in the dilute phase. The opposing trends lead to a modest overall impact on LLPS.
description: 65 pages (main text and supporting information), 7 main-text figures, 7 supporting figures, 1 supporting table, 135 references; accepted for publication in the Proceedings of the National Academy of Sciences, U.S.A
title: Housing and the redistributive effects of monetary policy
Creators: name: Hergovich, Philipp Viktor
Publisher: name: TU Wien
Year: 2014
Subjects: subject: Monetary Policy
subject: Heterogenous Agents
subject: Lifecycle
subject: Redistribution
subject: Housing

description: This thesis lays out a general equilibrium model, of which the main purpose is to measure redistributive effects between generations. To do so it builds up a lifecycle structure to introduce heterogeneity within the workers in the model, such that shocks affect different cohorts in a varied way. It separates housing from other consumption goods, and subjects agents to a downpayment constraint, which implies that they can only borrow, up to a certain fraction of their housing wealth. Redistributive effects of monetary policy shocks, which affect the model economy via the nominal interest rates of bonds, and in ation, are studied using Impulse Response Functions. The lifetime utility is employed as a measure of welfare redistribution. The analysis shows that the beneficiaries of these shocks and the subsequent reactions are elderly, wealthy households.
Orbits of 152 Globular Clusters of the Milky Way Galaxy Constructed from the Gaia DR2 data
Creators: name: Bajkova, A. T.
name: Bobylev, V. V.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences
subject: 85

description: We present orbits and their properties for 152 globular clusters of the Milky Way galaxy obtained using average Gaia DR2 proper motions and other astrometric data from the list of Vasiliev (2019). For orbit integrating we have used the axisymmetric model of the Galactic potential based on the Navarro-Frenk-White dark halo, and modified by Bajkova and Bobylev (2016) using circular velocities of Galactic objects in wide region of Galactocentric distances (up to 200 kpc) from Bhattacharjee et.al. (2014) catalog. Based on the analysis of the obtained orbits, we have modified the composition of the subsystems of globular clusters presented in Massari et. al. (2019).
description: 18 pages, 3 figures, 2 tables, accepted to RAA. arXiv admin note: text overlap with arXiv:2007.02350
Children’s Educational Completion Rates and Dropouts in the Context of Ethiopia’s National Poverty Reduction Strategy
Creators: name: Tassew Woldehanna
name: Tassew Woldehanna
Publisher: name: Unknown
Year: 2012
Subjects: subject: Community/Rural/Urban Development
subject: Food Security and Poverty
subject: Children
subject: Educational
subject: Poverty Reduction (PRSP)
subject: Ethiopia

description: Using a young Lives project data , a combination of quantitative and qualitative method was used to analyse the determinants of school completion/dropout of children from primary education. A Cox box proportional hazard model was used to analyse the survival of children in primary education. The findings have important implications for the formulation and revising Ethiopian Poverty Reduction Strategy Paper. While the policy focus of the 1996-initiated ESDP and the SDPRP (2002-5) on increasing educational access for all has been broadly successful, children from poor and/or highly indebted families still face significant constraints because they have to contribute to household survival through paid and unpaid work. It is, therefore, imperative to increase efforts to improve the livelihood options of the poor, including greater income generation opportunities, particularly in rural areas and for women. However, such strategies need to be child sensitive. For instance, income generating opportunities for women should simultaneously be accompanied by community childcare systems in order to prevent older children from shouldering their mother’s childcare burden.