cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Falta de Garantias e Falhas de Coordenação: evidências do sistema agroindustrial da carne bovina
Creators: name: Caleman, Silvia Morales De Queiroz
name: Zylbersztajn, Decio
name: Caleman, Silvia Morales De Queiroz
name: Zylbersztajn, Decio
Publisher: name: Unknown
Year: 2012
Subjects: subject: Agribusiness
subject: coordination failures
subject: guarantees
subject: complex transactions
subject: beef.
subject: falhas de coordenação
subject: garantias
subject: transações complexas
subject: carne bovina

description: O papel das instituições formais e informais na economia das organizações é tradicionalmente analisado em termos dos mecanismos eficientes de governança que minimizam os custos de transação. Baseada numa perspectiva inversa, a presente pesquisa foca nas falhas de coordenação e no problema da falta de garantias nas transações econômicas. Especificamente, examina-se o conjunto de garantias que suportam a transação entre pecuaristas e a indústria frigorífica em Mato Grosso do Sul com foco nas ineficiências do processo de comercialização de gado para abate. Para a compreensão das falhas de coordenação, propõe‑se um constructo teórico baseado em Barzel (1997), que relaciona direitos de propriedade, garantias e instituições. Esse modelo é testado empiricamente por meio do desenvolvimento de duas regressões logísticas múltiplas: i) modelo logit ordenado baseado na percepção de risco dos pecuaristas e ii) modelo probit bivariado recursivo baseado na percepção de risco dos pecuaristas e no papel das ações coletivas. Os resultados apontam para a importância das instituições formais e das ações coletivas como mecanismos geradores de garantias para a transação e, consequentemente, para a minimização dos custos de transação......The role of formal and informal institutions in the economy of organizations is traditionally analyzed in terms of efficient governance mechanisms which minimize transaction costs. Based on a different perspective, this paper focuses on coordination failures and the problem of lack of guarantees in sequential transactions. In particular, this research examines a bundle of guarantees which supports the transaction between producers and the meatpacking industry in the Mato Grosso do Sul state regarding the inefficiencies in the trading of ready-to-slaughter animals. A theoretical model based on Barzel (1997) involving property rights, guarantees and institutions is proposed for the understanding of coordination failures. This model is empirically tested with two multiple logistic regressions: i) an ordered logit model based on the producer’s risk perception and ii) a recursive bivariate probit model based on producer’s risk perception and on the role of collective action. The findings suggest that formal institutions and collective actions play a relevant role in providing guarantees and, thus, representing a source of transaction costs minimization.
Tuning spin and charge at a metal-organic hybrid interface
Creators: name: Sturmeit, Henning
Publisher: name: TU Dortmund
Year: 2021
Subjects: subject: Spin
subject: Metal-organic
subject: Interface
subject: Spintronics
subject: Porphyrin
subject: Crystal field
subject: Copper
subject: 530
subject: Spin
subject: Spintronik

description: Metal-organic interfaces are key constituents of the various functional building blocks that can be found in molecular electronics and spintronics. Long electron and spin relaxation times of organic molecules make them superior to inorganic materials for many technological devices. When put into contact with a metal electrode, the hybridization of molecular orbitals and metallic states can lead to several intriguing effects, which strongly affect the electronic and magnetic properties of the system. In this regard, the interface obtained by depositing nickel tetraphenyl porphyrin onto the copper (100) surface (NiTPP/Cu(100)) can be seen as an interesting model system. Previous experiments reported an unexpected high charge transfer leading to a partial filling of the molecular orbitals up to the LUMO+3 and a reduction of the central nickel atom. Considering this observation as the point of departure, this thesis aims to develop different approaches to alter the hybridization at this interface. The results of this thesis can be divided into three main topics. First, it is shown that a pre-oxidation of the copper substrate leads to a substantial quenching of the charge transfer from the metal to the molecule and, thereby, weakens the interaction. In a second step, the spin configuration of the chelated nickel ion is changed by an on-top adsorbed NO2 molecule. The third part addresses the temperature-induced changes at the NiTPP/Cu(100) interface upon annealing. Up to the limit of thermal decomposition, the NiTPP molecules do not undergo chemical changes but only conformational modifications.
Álcool Combustível no Brasil e Path Dependence
Creators: name: Shikida, Pery Francisco Assis
name: Perosa, Bruno Benzaquen
name: Shikida, Pery Francisco Assis
name: Perosa, Bruno Benzaquen
Publisher: name: Unknown
Year: 2012
Subjects: subject: Agribusiness
subject: ethanol
subject: path dependence
subject: Brazilian production.
subject: álcool combustível
subject: produção brasileira

description: Este trabalho tem como objetivo analisar a relação de path dependence no sistema econômico e institucional do álcool combustível no Brasil. O etanol, após fases de crescimento e desafios, tornou-se parte da matriz energética brasileira. Esta trajetória reflete a persistência de uma rota (caminho) traçada sob influência de organizações (usinas e destilarias, setor de máquinas e equipamentos, indústria automobilística, Estado, organizações corporativistas, P&D) e de agentes econômicos (consumidores) voltados, direta ou indiretamente, para a manutenção dessa rota escolhida. Este arranjo de “interesses” deu sustentação ao etanol brasileiro, mesmo em momentos em que a competitividade deste combustível era questionada como opção energética mais adequada para a substituição de gasolina/ diesel. Mesmo após a retomada do setor nos anos 2000, em que a tecnologia flex e as crescentes preocupações acerca das mudanças climáticas impulsionaram o setor no Brasil e no mundo, a escolha do etanol como substituto dos derivados do petróleo ainda se mostra ameaçada por novas tecnologias renováveis e mesmo pela descoberta de novas reservas de petróleo. Fica claro que, caso se deseje manter a liderança no mercado nacional de combustíveis e expandir o mercado internacional para estes produtos, a coalizão em torno do álcool combustível ainda precisará enfrentar diversas questões técnicas e institucionais......This study aims to analyze the relationship of path dependence in the economic and institutional system of ethanol in Brazil. Ethanol, after stages of growth and challenges, has become part of the Brazilian energy matrix. This trajectory reflects the persistence of a path shaped under the influence of organizations (mills and distilleries, machinery and equipment sectors, automotive industry, the government, corporatist organizations, R&D) and economic agents (consumers) interested, directly or indirectly, in the maintenance of the chosen route. This “interest arrangements” supported the Brazilian ethanol, even when this fuel competitiveness was questioned as the most appropriate energy option to substitute gasoline/diesel. Even after the recovery of this sector in the 2000s, when the flex-fuel technology and the GHG (Greenhouse Gases) emissions increased the ethanol demand in Brazil and abroad, the choice of ethanol as the main substitute of fossil fuels is still jeopardized by other renewable fuels and even by the discovery of new oil reserves in Brazil. In order to succeed, the collision supporting the expansion of ethanol in the international market will have to handle a myriad of technological and institutional barriers in Brazil and worldwide.
Four basic symmetry types in the universal 7-cluster structure of 143 complete bacterial genomic sequences
Creators: name: Gorban, A. N.
name: Popova, T. G.
name: Zinovyev, A. Yu.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Genomics (q-bio.GN)
subject: Statistics Theory (math.ST)
subject: FOS: Biological sciences
subject: FOS: Mathematics

description: Coding information is the main source of heterogeneity (non-randomness) in the sequences of bacterial genomes. This information can be naturally modeled by analysing cluster structures in the "in-phase" triplet distributions of relatively short genomic fragments (200-400bp). We found a universal 7-cluster structure in bacterial genomic sequences and explained its properties. We show that codon usage of bacterial genomes is a multi-linear function of their genomic G+C-content with high accuracy. Based on the analysis of 143 completely sequenced bacterial genomes available in Genbank in August 2004, we show that there are four "pure" types of the 7-cluster structure observed. All 143 cluster animated 3D-scatters are collected in a database and is made available on our web-site: http://www.ihes.fr/~zinovyev/7clusters The finding can be readily introduced into any software for gene prediction, sequence alignment or bacterial genomes classification.
description: 13 pages, 4 figures
International terrorism, political instability and the escalation effect
Creators: name: Campos, Nauro F.
name: Gassebner, Martin
Publisher: name: ETH Zurich
Year: 2009
Subjects: subject: ECONOMETRICS AND ECONOMETRIC MODELS (OPERATIONS RESEARCH)
subject: Terrorism
subject: Political instability
subject: ESKALATION VON INTERNATIONALEN KONFLIKTEN (INTERNATIONALE POLITIK)
subject: ÖKONOMETRIE UND ÖKONOMETRISCHE MODELLE (OPERATIONS RESEARCH)
subject: ESCALATION OF INTERNATIONAL CONFLICTS (INTERNATIONAL POLITICS)
subject: INTERNATIONAL CONFLICTS + RESOLUTION OF INTERNATIONAL CONFLICTS (INTERNATIONAL POLITICS)
subject: International terrorism
subject: Escalation
subject: INTERNATIONALE KONFLIKTE + KONFLIKTLÖSUNG (INTERNATIONALE POLITIK)
subject: info:eu-repo/classification/ddc/320
subject: Political science
subject: FOS: Political science

description: KOF Working Papers, 220
Primordial magnetic fields during the cosmic dawn in light of EDGES 21-cm signal
Creators: name: Bera, Ankita
name: Datta, Kanan K.
name: Samui, Saumyadip
Publisher: name: arXiv
Year: 2020
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We study prospects of constraining the primordial magnetic field (PMF) and its evolution during the dark ages and cosmic dawn in light of EDGES 21-cm signal. Our analysis has been carried out on a `colder IGM' background which is one of the promising avenues to interpret the EDGES signal. We consider the dark matter-baryon interactions for the excess cooling. We find that the colder IGM suppresses both the residual free electron fraction and the coupling coefficient between the ionised and neutral components. The Compton heating also gets affected in colder IGM background. Consequently, the IGM heating rate due to the PMF enhances compared to the standard scenario. Thus, a significant fraction of the magnetic energy, for $B_0 \lesssim 0.5 \, {\rm nG}$, gets transferred to the IGM and the magnetic field decays at a much faster rate compared to the simple $(1+z)^2$ scaling during the dark ages and cosmic dawn. This low PMF is an unlikely candidate for explaining the rise of the EDGES absorption signal at lower redshift. We also see that the PMF and DM-baryon interaction together introduces a plateau-like feature in the redshift evolution of the IGM temperature. We find that the upper limit on the PMF depends on the underlying DM-baryon interaction. Higher PMF can be allowed when the interaction cross-section is higher and/or the DM particle mass is lower. Our study shows that the PMF with $B_0$ up to $\sim 0.4 \, {\rm nG}$, which is ruled out in the standard model, can be allowed if DM-baryon interaction with suitable cross-section and DM mass is considered.
description: 9 pages, 4 figures, accepted for publication in MNRAS
The binary progenitor of Tycho Brahe's 1572 supernova
Creators: name: Ruiz-Lapuente, Pilar
name: Comeron, Fernando
name: Mendez, Javier
name: Canal, Ramon
name: Smartt, Stephen J.
name: Filippenko, Alexei V.
name: Kurucz, Robert L.
name: Chornock, Ryan
name: Foley, Ryan J.
name: Stanishev, Vallery
name: Ibata, Rodrigo
Publisher: name: arXiv
Year: 2004
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The brightness of type Ia supernovae, and their homogeneity as a class, makes them powerful tools in cosmology, yet little is known about the progenitor systems of these explosions. They are thought to arise when a white dwarf accretes matter from a companion star, is compressed and undergoes a thermonuclear explosion Unless the companion star is another white dwarf (in which case it should be destroyed by the mass-transfer process itself), it should survive and show distinguishing properties. Tycho's supernova is one of the only two type Ia supernovae observed in our Galaxy, and so provides an opportunity to address observationally the identification of the surviving companion. Here we report a survey of the central region of its remnant, around the position of the explosion, which excludes red giants as the mass donor of the exploding white dwarf. We found a type G0--G2 star, similar to our Sun in surface temperature and luminosity (but lower surface gravity), moving at more than three times the mean velocity of the stars at that distance, which appears to be the surviving companion of the supernova.
description: accepted by Natute (subject to embargo policy), 31 pages, 4 figures
On the accuracy of the probability method for quantifying beliefs about inflation
Creators: name: Maag, Thomas
Publisher: name: ETH Zurich
Year: 2009
Subjects: subject: ECONOMETRICS AND ECONOMETRIC MODELS (OPERATIONS RESEARCH)
subject: REGION OF THE EUROPEAN UNION
subject: Belief formation
subject: ÖKONOMETRIE UND ÖKONOMETRISCHE MODELLE (OPERATIONS RESEARCH)
subject: Inflation expectations
subject: REGION DER EUROPÄISCHEN UNION
subject: Qualitative response data
subject: INFLATION
subject: Inflation perceptions
subject: Quantification
subject: MARKTFORSCHUNG
subject: MARKET RESEARCH
subject: info:eu-repo/classification/ddc/330
subject: info:eu-repo/classification/ddc/510
subject: Economics
subject: Mathematics
subject: FOS: Mathematics

description: KOF Working Papers, 230
title: Analysis of the alpha-hypergeometric stochastic volatility model
Creators: name: Bernkopf, Maximilian
Publisher: name: TU Wien
Year: 2016
Subjects: subject: Optionsbewertung
subject: stochastische Volatilität
subject: große Abweichungen
subject: hypergeometrische Funktion
subject: Option Pricing
subject: stochastic volatility
subject: large deviations
subject: hypergeometric function

description: We investigate the alpha-hypergeometric stochastic volatility model. We present results including the martingale property of the forward and calculate certain transforms of the forward as well as the volatility itself, which enable us to perform plain vanilla pricing and pricing of volatility derivatives. Furthermore we derive certain large deviation problems associated with the alpha-hypergeometric stochastic volatility model as well as other asymptotics.
The Ionized Component of Intermediate-Velocity Cloud Complex L
Creators: name: Haffner, L. M.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present the first full map of the H-alpha emission from the intermediate-velocity cloud Complex L. Kinematically resolved emission components from the ionized gas reveal a close spatial and velocity correspondence to that of the neutral gas as mapped by 21 cm line observations. Using a simple Gaussian component fitting technique, we compare the details of the emission from the two phases of Complex L. The mean velocity of the H-alpha and 21 cm emission are strongly correlated, but we find that the some of the ionized gas is systematically offset ~ -4 km/s relative to the neutral gas. Line widths are qualitatively comparable, but both emission components are too low signal-to-noise to study any differences between the phases. Finally, as with our previous study toward Complex K, we find I(H-alpha) is not strongly correlated to N(H I) along the same lines of sight through Complex L.
description: 8 pages, 9 figures, to appear in ASP Conf. Proc.: "Extra-planar Gas", ed. R. Braun. Original quality paper & figures available at http://www.astro.wisc.edu/wham/papers-dir/haffner_dwingeloo.ps.gz
Scaling of the superfluid density in high-temperature superconductors
Creators: name: Homes, C. C.
name: Dordevic, S. V.
name: Valla, T.
name: Strongin, M.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: A scaling relation ρ_s \simeq 35σ_{dc}T_c has been observed in the copper-oxide superconductors, where ρ_s is the strength of the superconducting condensate, T_c is the critical temperature, and σ_{dc} is the normal-state dc conductivity close to T_c. This scaling relation is examined within the context of a clean and dirty-limit BCS superconductor. These limits are well established for an isotropic BCS gap 2Δand a normal-state scattering rate 1/τ; in the clean limit 1/τ\ll 2Δ, and in the dirty limit 1/τ> 2Δ. The dirty limit may also be defined operationally as the regime where ρ_s varies with 1/τ. It is shown that the scaling relation ρ_s \propto σ_{dc}T_c is the hallmark of a BCS system in the dirty-limit. While the gap in the copper-oxide superconductors is considered to be d-wave with nodes and a gap maximum Δ_0, if 1/τ> 2Δ_0 then the dirty-limit case is preserved. The scaling relation implies that the copper-oxide superconductors are likely to be in the dirty limit, and that as a result the energy scale associated with the formation of the condensate is scaling linearly with T_c. The a-b planes and the c axis also follow the same scaling relation. It is observed that the scaling behavior for the dirty limit and the Josephson effect (assuming a BCS formalism) are essentially identical, suggesting that in some regime these two effects may be viewed as equivalent. This raises the possibility that electronic inhomogeneities in the copper-oxygen planes may play an important role in the nature of the superconductivity in the copper-oxide materials.
description: 8 pages with 5 figures and 1 table
Nodal Lines in the Cranked HFB Overlap kernels
Creators: name: Oi, Makito
name: Tajima, Naoki
Publisher: name: arXiv
Year: 2004
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: Norm overlap kernels of the cranked Hartree-Fock-Bogoliubov states are studied in the context of angular momentum projection. In particular, the geometrical distribution of nodal lines, i.e., one dimensional structures where the overlap kernels possess null value, is investigated in the three dimensional space defined by the Euler angles. It is important to know the distribution of these nodal lines when one attempts to determine the phase of norm overlap kernels.
description: 7 pages; 5 figures; 1 table; accepted for publication in Phys. Lett. B
Effective Interaction Techniques for the Gamow Shell Model
Creators: name: Hagen, G.
name: Hjorth-Jensen, M.
name: Vaagen, J. S.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Nuclear Theory (nucl-th)
subject: Mathematical Physics (math-ph)
subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: We apply a contour deformation technique in momentum space to the newly developed Gamow shell model, and study the drip-line nuclei 5He, 6He and 7He. A major problem in Gamow shell-model studies of nuclear many-body systems is the increasing dimensionality of many-body configurations due to the large number of resonant and complex continuum states necessary to reproduce bound and resonant state energies. We address this problem using two different effective operator approaches generalized to the complex momentum plane. These are the Lee-Suzuki similarity transformation method for complex interactions and the multi-reference perturbation theory method. The combination of these two approaches results in a large truncation of the relevant configurations compared with direct diagonalization. This offers interesting perspectives for studies of weakly bound systems.
description: 18 pages, 17 figs, Revtex4
title: Flash Crashes : Ursachen, Hintergründe und der Zusammenhang zum High Frequency Trading
Creators: name: Madl, Jacqueline
Publisher: name: TU Wien
Year: 2016
Subjects: subject: Flash Crash
subject: Hochfrequenzhandel
subject: Flash Crash
subject: High Frequency Trading

description: Der Flash Crash vom 06. Mai 2010 war ein einschneidendes Ereignis am Wertpapiermarkt. In kürzester Zeit fielen einige der wichtigsten Indizes am Future- und Aktienmarkt, um sich nur wenige Minuten später wieder zu erholen. Durch dieses Ereignis bekam eine neue Form des Handelns große Aufmerksamkeit, das High Frequency Trading, welches ein sehr hohes Volumen am Markt einnimmt. In dieser Arbeit werden die Berichte des Flash Crash genauer analysiert. Es werden einige Grundlagen zur stochastischen Kontrolltheorie beschrieben und darauf aufbauend einige Handelsstrategien der High Frequency Trader vorgestellt und genauer betrachtet. Außerdem werden Methoden vorgestellt, um zukünftige Flash Crashes vorherzusehen. Diese werden auf Daten der Istanbuler Börse angewandt. In der numerischen Analyse sieht man, dass der Volume-Synchronized Propability of Informed Trading (VPIN) sehr von einer genauen Einteilung in Kauf- und Verkaufsvolumen abhängt und seine Aussagekraft dadurch um einiges erhöht wird. Man steht daher weiterhin vor den Problemen, wie man mit einer größeren Datenmenge umgeht, und welche Methode man zur Einteilung des Volumens verwendet. Außerdem muss der Markt und seine Teilnehmer noch genauer analysiert werden, um erkennen zu können, wer oder was für die Ungleichgewichten am Markt verantwortlich ist.
description: The Flash Crash of the 6th May 2010 was a dramatic event on the securities market. A few of the most important indices on the future and stock market dropped rapidly but recovered within minutes. After this event a new form of trading gained prominence, the high frequency trading, which is responsible for 70 percent of the trading volume on the market. This thesis gives an overview of the different reports dealing the flash crash. Afterwards fundamentals of stochastic optimal control are given and based on this, different trading strategies of high frequency traders are introduced and analyzed. Furthermore methods to predict future flash crashes are described and applied on data of the Istanbul Stock Exchange. The numerical analysis reflects how much the Volume-Synchronized Propability of Informed Trading (VPIN) depends on a clear separation of buy and sell volume and how this improves the informative value. The problem, which will remain in the future, is how to deal with such a big amount of data and which methods will be used for separating the volume. Furthermore an analysis of the whole market is necessary to identify who or what is responsible for the market imbalances.
Geodesics of Hayward black hole surrounded by quintessence
Creators: name: Pedraza, Omar
name: López, L. A.
name: Arceo, R.
name: Cabrera-Munguia, I.
Publisher: name: arXiv
Year: 2020
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: Basing on the ideas used by Kiselev, we study the Hayward black hole surrounded by quintessence. By setting for the quintessence state parameter at the special case of $ω=-\frac{2}{3}$, using the metric of the black hole surrounded by quintessence and the definition of the effective potential, we analyzed in detail the null geodesics for different energies. We also analyzed the horizons of the Hayward black hole surrounded by quintessence as well as the shadow of the black hole.
Are Turkish Migrants Altruistic?: Evidence From the Macro Data
Creators: name: Akkoyunlu, Sule
Publisher: name: ETH Zurich
Year: 2010
Subjects: subject: GROSS NATIONAL PRODUCT
subject: ECONOMETRICS AND ECONOMETRIC MODELS (OPERATIONS RESEARCH)
subject: TURKS (PEOPLES, ETHNIC GROUPS)
subject: INTERNATIONAL MOBILITY OF WORKERS + INTERNATIONAL MIGRATION OF WORKERS
subject: RUECKUEBERWEISUNGEN DER GASTARBEITER (ZAHLUNGSVERKEHR)
subject: Migration
subject: GERMANY (CENTRAL EUROPE). FEDERAL REPUBLIC OF GERMANY
subject: ARBEITSÖKONOMIE
subject: DEUTSCHLAND (MITTELEUROPA). BUNDESREPUBLIK DEUTSCHLAND
subject: BRUTTONATIONALEINKOMMEN
subject: LABOUR ECONOMICS
subject: ÖKONOMETRIE UND ÖKONOMETRISCHE MODELLE (OPERATIONS RESEARCH)
subject: INTERNATIONALE MOBILITÄT DER ARBEITSKRÄFTE + INTERNATIONALE MIGRATION DER ARBEITSKRÄFTE
subject: Alturism
subject: TÜRKEN (VÖLKER, ETHNIEN)
subject: Remittances
subject: Cointegration
subject: REMITTANCES (FINANCIAL TRANSACTIONS)
subject: info:eu-repo/classification/ddc/330
subject: info:eu-repo/classification/ddc/510
subject: Economics
subject: Mathematics
subject: FOS: Mathematics

description: KOF Working Papers, 246
High-Order Schemes of Exponential Time Differencing for Stiff Systems with Nondiagonal Linear Part
Creators: name: Permyakova, Evelina V.
name: Goldobin, Denis S.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Numerical Analysis (math.NA)
subject: Pattern Formation and Solitons (nlin.PS)
subject: FOS: Mathematics
subject: FOS: Physical sciences

description: Exponential time differencing methods is a power tool for high-performance numerical simulation of computationally challenging problems in condensed matter physics, fluid dynamics, chemical and biological physics, where mathematical models often possess fast oscillating or decaying modes -- in other words, are stiff systems. Practical implementation of these methods for the systems with nondiagonal linear part of equations is exacerbated by infeasibility of an analytical calculation of the exponential of a nondiagonal linear operator; in this case, the coefficients of the exponential time differencing scheme cannot be calculated analytically. We suggest an approach, where these coefficients are numerically calculated with auxiliary problems. We rewrite the high-order Runge--Kutta type schemes in terms of the solutions to these auxiliary problems and practically examine the accuracy and computational performance of these methods for a heterogeneous Cahn--Hilliard equation, a sixth-order spatial derivative equation governing pattern formation in the presence of an additional conservation law, and a Fokker--Planck equation governing macroscopic dynamics of a network of neurons.
description: 21 pages, 11 figures
Does the Law of One Price Hold in a High-Inflation Environment?: A Tale of Two Cities in Turkey
Creators: name: Akkoyunlu, Sule
name: Siliverstovs, Boriss
Publisher: name: ETH Zurich
Year: 2010
Subjects: ECONOMETRICS AND ECONOMETRIC MODELS (OPERATIONS RESEARCH)
ANKARA, STADT (TÜRKEI)
Price convergence
Turkey
PRICES + PRICE FORMATION
Bounds testing procedure
ÖKONOMETRIE UND ÖKONOMETRISCHE MODELLE (OPERATIONS RESEARCH)
TURKEY (WEST ASIA). REPUBLIC OF TURKEY
INFLATION
TÜRKEI (WESTASIEN). TÜRKISCHE REPUBLIK
PREISE + PREISBILDUNG
ANKARA, CITY (TURKEY)
ISTANBUL, CITY AND PROVINCE (TURKEY)
ISTANBUL, STADT UND PROVINZ (TÜRKEI)
info:eu-repo/classification/ddc/330
Economics

description: KOF Working Papers, 248
Supplementary Information from Divalent cations bind to phosphoinositides to induce ion and isomer specific propensities for nano-cluster initiation in bilayer membranes
Creators: name: Bradley, Ryan P.
name: Slochower, David R.
name: Janmey, Paul A.
name: Radhakrishnan, Ravi
Publisher: name: The Royal Society
Year: 2020
Subjects: Biophysics

description: Videos, tables, figures
Separação Entre Propriedade e Decisão de Gestão nas Cooperativas Agropecuárias Brasileiras
Creators: name: Costa, Davi Rogério De Moura
name: Chaddad, Fabio Ribas
name: Azevedo, Paulo Furquim De
name: Costa, Davi Rogério De Moura
name: Chaddad, Fabio Ribas
name: Azevedo, Paulo Furquim De
Publisher: name: Unknown
Year: 2012
Subjects: subject: Agribusiness
subject: agricultural cooperatives
subject: control and corporate governance.
subject: cooperativismo
subject: controle e governança corporativa

description: A visão predominante na teoria econômica é que organizações de propriedade difusa e complexas apresentam melhor desempenho se forem separados os direitos ao lucro residual das decisões de gestão. Nos países de economia desenvolvida, os modelos de governança corporativa das cooperativas agropecuárias de propriedade difusa e complexas, tal como já informado pela literatura econômica, promovem a desvinculação dos cooperados da gestão da empresa. Em contraposição, no Brasil, embora não haja estudos sistemáticos sobre o tema, evidências pontuais indicam que essas organizações concentram a propriedade e decisões de gestão. A possível divergência entre os modelos de governança utilizados nos diferentes países revela a necessidade de mensuração do grau de separação entre propriedade e decisão de gestão em cooperativas agropecuárias brasileiras, tarefa a que se dedica este artigo. A partir de dados coletados junto a 77 cooperativas agropecuárias, identificou-se que diferentes modelos de governança coexistem no Brasil. Embora grande parcela de cooperativas tenha governança concentrada, há um grupo que já adota modelos de governança que promovem a separação parcial de jure ou de facto entre propriedade e decisão de gestão. Esses resultados revelam a necessidade de pesquisas futuras voltadas a identificar os determinantes da variabilidade de modelos de governança nas cooperativas brasileiras.....Contract and Organizational theories establish that complex organizations with diffuse ownership, such as agriculture cooperatives, should benefit from the separation of ownership and decision control. In developed economies, such as the USA and Canada, these organizations, aligned with the theoretical proposition, adopt governance models that promote the separation of ownership and decision rights. However, in Brazil, despite the lack ofquantitative studies that measure governance separation, anecdotal evidence suggests that ownership and decisions rights are concentrated in Brazilian cooperatives. By means of a survey with 77 Brazilian agricultural cooperatives, this paper measures the degree of de jure and de facto separation of ownership and decision control, providing new evidences on the governance models observed in different countries. Different models coexist in Brazil, i.e., although the majority of agricultural cooperatives concentrate ownership and decision rights, a significant proportion organize themselves consistently with the theoretical proposition, adopting the American models of agricultural cooperatives. Further research is required in order to address the determinants of the variety of governance models in Brazil.
Multi-density model of the ionised gas in NGC 253 using radio recombination lines
Creators: name: Mohan, Niruj R.
name: Goss, W. M.
name: Anantharamaiah, K. R.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We have imaged the H92alpha (8.3 GHz), H75alpha (15 GHz), and H166alpha (1.4 GHz) Radio Recombination Lines (RRLs) from NGC 253 at resolutions of 4.5 pc (0.4"), 2.5 pc (0.2") and 53 pc (4.5") respectively. The H92alpha line arises from individual compact sources, most of which possess radio continuum counterparts. The line widths range from ~200 km/s for the sources near the radio nucleus to 70-100 km/s for the extranuclear ones. These lines are emitted by gas at a density ~10000 /cc. The remainder of the cm-wave RRLs arise in lower density gas (~500 /cc) with a higher area filling factor and with ten times highermass. A third component of higher density gas (>10000 /cc) is required to explain the mm-wave RRLs.
description: Accepted by A&A; Changed to fit all figures within page
Quantum Phase Diagram of a Moiré-Hubbard Model
Creators: name: Pan, Haining
name: Wu, Fengcheng
name: Sarma, Sankar Das
Publisher: name: arXiv
Year: 2020
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We theoretically study a generalized Hubbard model on moiré superlattices of twisted bilayers, and find very rich filling-factor-dependent quantum phase diagrams tuned by interaction strength and twist angle. Strong long-range Coulomb interaction in the moiré-Hubbard model induces Wigner crystals at a series of fractional filling factors. The effective lattice of the Wigner crystal is controlled by the filling factor, and can be triangle, rectangle, honeycomb, kagome, etc, providing a single platform to realize many different spin models on various lattices by simply tuning carrier density. In addition to Wigner crystals that are topologically trivial, interaction-induced Chern insulators emerge in the phase diagram. This finding paves a way for engineering interaction-induced quantum anomalous Hall effect in moiré-Hubbard systems where the corresponding single-particle moiré band is topologically trivial.
description: 5 + 7 pages, 6 + 12 figures
Supplementary Material from No evidence for neonicotinoid preferences in the bumblebee Bombus impatiens
Creators: name: Muth, Felicity
name: Gaxiola, Rebekah L.
name: Leonard, Anne S.
Publisher: name: The Royal Society
Year: 2020
Subjects: subject: 60801 Animal Behaviour
subject: FOS: Biological sciences

description: Neonicotinoid pesticides can have a multitude of negative sublethal effects on bees. Understanding their impact on wild populations requires accurately estimating the dosages bees encounter under natural conditions. This is complicated by the possibility that bees might influence their own exposure: two recent studies found that bumblebees (Bombus terrestris) preferentially consumed neonicotinoid-contaminated nectar, even though these chemicals are thought to be tasteless and odourless. Here, we used Bombus impatiens to explore two elements of these reported preferences, with the aim of understanding their ecological implication and underlying mechanism. First, we asked whether preferences persisted across a range of realistic nectar sugar concentrations, when measured at a series of time points up until 24 h. Second, we tested whether bees' neonicotinoid preferences were driven by an ability to associate their post-ingestive consequences with floral stimuli such as colour, location or scent. We found no evidence that foragers preferred to consume neonicotinoid-containing solutions, despite finding effects on feeding motivation and locomotor activity in line with previous work. Bees also did not preferentially visit floral stimuli previously paired with a neonicotinoid-containing solution. These results highlight the need for further research into the mechanisms underlying bees’ responses to these pesticides, critical for determining how neonicotinoid-driven foraging preferences might operate in the real world for different bee species.
Supplementary Information from Continuous flow vortex fluidic-mediated exfoliation and fragmentation of two-dimensional MXene
Creators: name: Al-Antaki, Ahmed Hussein Mohammed
name: Kellici, Suela
name: Power, Nicholas P.
name: Lawrance, Warren D.
name: Raston, Colin L.
Publisher: name: The Royal Society
Year: 2020
Subjects: subject: 30399 Macromolecular and Materials Chemistry not elsewhere classified
subject: FOS: Chemical sciences
subject: 100799 Nanotechnology not elsewhere classified
subject: FOS: Nanotechnology

description: MXene (Ti2CTx) is exfoliated in a vortex fluidic device (VFD), as a thin film microfluidic platform, under continuous flow conditions, down to ca 3 nm thin multi-layered two-dimensional (2D) material, as determined using AFM. The optimized process, under an inert atmosphere of nitrogen to avoid oxidation of the material, was established by systematically exploring the operating parameters of the VFD, along with the concentration of the dispersed starting material and the choice of solvent, which was a 1 : 1 mixture of isopropyl alcohol and water. There is also some fragmentation of the 2D material into nanoparticles ca 68 nm in diameter.
‘Baumol’s Diseases’: The Case of Switzerland
Creators: name: Hartwig, Jochen Kurt
Publisher: name: ETH Zurich
Year: 2010
Subjects: SCHWEIZ (MITTELEUROPA). SCHWEIZERISCHE EIDGENOSSENSCHAFT
SWITZERLAND (CENTRAL EUROPE). SWISS CONFEDERATION
Productivity growth
HYPOTHESIS TESTING (MULTIVARIATE STATISTICS)
GROWTH MODELS (ECONOMICS)
ECONOMIC GROWTH
WACHSTUMSMODELLE (WIRTSCHAFTSWISSENSCHAFTEN)
WIRTSCHAFTSWACHSTUM
HYPOTHESENTESTS (MULTIVARIATE STATISTIK)
Baumol's disease
Switzerland
info:eu-repo/classification/ddc/330
Economics

description: KOF Working Papers, 250
Quantum Monte Carlo Calculations of Light Nuclei
Creators: name: Pieper, Steven C.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: Variational Monte Carlo and Green's function Monte Carlo are powerful tools for calculations of properties of light nuclei using realistic two-nucleon and three-nucleon potentials. Recently the GFMC method has been extended to multiple states with the same quantum numbers. The combination of the Argonne v_18 two-nucleon and Illinois-2 three-nucleon potentials gives a good prediction of many energies of nuclei up to 12C. A number of other recent results are presented: comparison of binding energies with those obtained by the no-core shell model; the incompatibility of modern nuclear Hamiltonians with a bound tetra-neutron; difficulties in computing RMS radii of very weakly bound nuclei, such as 6He; center-of-mass effects on spectroscopic factors; and the possible use of an artificial external well in calculations of neutron-rich isotopes.
description: INPC2004 Proceedings, 17 pages
Assessing the Real-Time Informational Content of Macroeconomic Data Releases for Now-/Forecasting GDP: Evidence for Switzerland
Creators: name: Kholodilin, Konstantin
name: Siliverstovs, Boriss
Publisher: name: ETH Zurich
Year: 2010
Subjects: Real-time data
ECONOMETRICS AND ECONOMETRIC MODELS (OPERATIONS RESEARCH)
GROSS NATIONAL PRODUCT
Dynamic factor model
BUSINESS FORECASTS
Nowcasting
BETRIEBSWIRTSCHAFTLICHE PROGNOSE
BRUTTONATIONALEINKOMMEN
SCHWEIZ (MITTELEUROPA). SCHWEIZERISCHE EIDGENOSSENSCHAFT
SWITZERLAND (CENTRAL EUROPE). SWISS CONFEDERATION
ÖKONOMETRIE UND ÖKONOMETRISCHE MODELLE (OPERATIONS RESEARCH)
Forecasting
Business tendency surveys
info:eu-repo/classification/ddc/330
Economics

description: KOF Working Papers, 251
Do Google Searches Help in Nowcasting Private Consumption?: A Real-Time Evidence for the US
Creators: name: Kholodilin, Konstantin
name: Podstawski, Maximilian
name: Siliverstovs, Boriss
Publisher: name: ETH Zurich
Year: 2010
Subjects: subject: ECONOMETRICS AND ECONOMETRIC MODELS (OPERATIONS RESEARCH)
subject: INTERNET + WORLD WIDE WEB (COMPUTER SYSTEMS)
subject: ÖKONOMETRIE UND ÖKONOMETRISCHE MODELLE (OPERATIONS RESEARCH)
subject: PRIVATE CONSUMPTION
subject: VEREINIGTE STAATEN VON AMERIKA, USA (NORDAMERIKA)
subject: PRIVATER KONSUM
subject: INTERNET + WORLD WIDE WEB (COMPUTERSYSTEME)
subject: UNITED STATES OF AMERICA, USA (NORTH AMERICA)
subject: info:eu-repo/classification/ddc/330
subject: info:eu-repo/classification/ddc/510
subject: Economics
subject: Mathematics
subject: FOS: Mathematics

description: KOF Working Papers, 256
UN ACERCAMIENTO A LAS COMPETENCIAS DE LA EDUCACIÓN VETERINARIA EN MÉXICO Y ESPAÑA
Creators: name: Climént Bonilla, Juan B.
name: Climént Bonilla, Juan B.
Publisher: name: Unknown
Year: 2014
Subjects: subject: Agribusiness
subject: Agricultural and Food Policy
subject: Veterinary competencies
subject: veterinary education
subject: veterinary training
subject: veterinary career
subject: veterinary study plans.

description: This article's main purpose is to contribute to the joint understanding of the qualities and attributes of different veterinary education models and approaches in Mexico and Spain, to serve as a general reference to initiatives that seek to improve educational systems —already established or to be established—, in the veterinary profession field, specially with regard to curriculum design and development. To this end, the study focuses: first, on the content of 26 study plans —11 curricula covering the total of Spanish veterinary schools; and 15, corresponding to homologous Mexican institutions, among a total of more than 40 registered in the country—; and second, on relevant aspects to the employability of graduates coming from these educational institutions. The information and data that serve as a basis for this study were obtained through the 26 institutions' Web sites. The contributions of this article mainly result from the observation of both similarities and differences in the content of the curricula analyzed, considering that, in some way and measure, all the study plans enrich the knowledge of competences associated with veterinary education in university institutions of Mexico and Spain.
Electronic Supplementary Material 2 from Cooperation with closely bonded individuals reduces cortisol levels in long-tailed macaques
Creators: name: Stocker, Martina
name: Matthias-Claudio Loretto
name: Sterck, Elisabeth H. M.
name: Bugnyar, Thomas
name: Massen, Jorg J. M.
Publisher: name: The Royal Society
Year: 2020
Subjects: subject: Physiology
subject: FOS: Biological sciences
subject: 170299 Cognitive Science not elsewhere classified
subject: FOS: Psychology
subject: 60801 Animal Behaviour

description: Salivary cortisol in long-tailed macaques - biological validation
Electronic Supplementary Material 1 from Cooperation with closely bonded individuals reduces cortisol levels in long-tailed macaques
Creators: name: Stocker, Martina
name: Matthias-Claudio Loretto
name: Sterck, Elisabeth H. M.
name: Bugnyar, Thomas
name: Massen, Jorg J. M.
Publisher: name: The Royal Society
Year: 2020
Subjects: subject: Physiology
subject: FOS: Biological sciences
subject: 170299 Cognitive Science not elsewhere classified
subject: FOS: Psychology
subject: 60801 Animal Behaviour

description: Additional information on subjects/dyads, apparatuses, training procedure and counterbalanced testing; Table S1-S3; Figure S1
title: Ascheschmelzverhalten von Biobrennstoffen
Creators: name: Diem, Sebastian
Publisher: name: TU Wien
Year: 2016
Subjects: subject: Biomasse
subject: Asche
subject: Schmelzverhalten
subject: Biomass
subject: ash
subject: ash melting

description: Betrachtet man die letzten Jahre mit dem Fokus auf die Nutzung von Biomasse im Energiesektor zur Bereitstellung von W¨arme und der Gewinnung von Folgeprodukten aus der Umwandlung durch biologische, chemische und thermische Prozesse, so muss man feststellen, dass der Bedarf an Biomasse stetig im Wachsen ist. Mit der Zweibett-Wirbelschicht-Dampfvergaser-Technologie ist es nun möglich ein sticksto-freies und heizwertreiches Produktgas aus fester Biomasse zu erzeugen, welches im Anschluss für weitere Treibstoffsynthesen genutzt werden kann. Aschebedingte Probleme, wie der Interaktion zwischen Bettmate-rial und Asche mit folgender Agglomeration und Schlackenbildung bedingt durch niedrige Ascheschmelztemperaturen erfordern hier noch weiteren Forschungs- und Entwicklungsbedarf. Kern der vorliegenden Arbeit war das Untersuchen des Ascheschmelzverhaltens von unterschiedlichen Biobrennstoffen mittels eines Erhitzungsmikroskops, sowie die Beeinflussung dessen durch Additive. Zu Beginn wurde der Stand des Wissens über die Biomasse allgemein, der Vergasungstechnik, dem Aschebildungsprozess und den aschebedingen Problefeldern, sowie die Bestimmung des Ascheschmelzverhaltens dargelegt. Im Versuchsteil wurden die Aschen der Proben aus Holz und günstigeren agrarischen Reststoffen Maisstroh, Maiskolben, Olivenbagasse und Zuckerrohrbagasse nach genormten, sowie eigen gewählten Zeit-Temperaturprofilen erzeugt und deren Ascheschmelzverhalten ermittelt. Weiteres waren für den Vergleich der einzelnen Proben Elementaranalysen der Brennstoffe, die Bestimmung des Asche- und Wassergehaltes, sowie Röntgen Fluoreszenz Analysen der Aschen Bestandteile der Arbeit. Dabei zeigten sich die bekannten Unterschiede im Ascheschmelzverhalten zwischen den holzartigen und alternativen Biobrennstofffen. Erstere wiesen eine relativ höhere Erweichungstemperaturen auf. Der Vergleich innerhalb der Reststoffe offenbarte jedoch auch wesentliche Abweichungen in ihren Eigenschaften untereinander, welche auf die verschiedenen Elementarzusammensetzungen der Aschen zurückzuführen waren. Um nun den Ascheschmelzvorgang zu höheren Temperaturen zu verschieben wurden Calciumcarbonat, sowie Kaolin als Additive den Brennstoffen Maisstroh, Maiskolben, Olivenbagasse und Zuckerrohrbagasse beigemengt. Calciumcarbonat führte lediglich bei Maiskolben zu einer signifikanten Steigerung der Erweichungstemperatur. Kaolin konnte bei allen der untersuchten Brennstoffe außer bei Zuckerrohrbagasse den gleichen positiven Effekt hervorrufen. Daraus war zu schließen, dass die Anwendung von Additiven bei den untersuchten Biomassen ein großes Potential für den Einsatz in Wirbelschichtanlagen besitzt.
title: Hydrophobins from Trichoderma for immobilization of industrially relevant enzymes
Creators: name: Boraca, Małgorzata
Publisher: name: TU Wien
Year: 2016
Subjects: subject: Trichoderma
subject: cellulase
subject: hydrophobin
subject: biotechnology

description: Hydrophobine sind in Pilzen weitverbreitet. Bekannt ist ihre Rolle in der Herstellung hydrophober Oberflächen, Fruchtkörperbildung, und Sporulation. Dank deren Fähigkeit sowohl an hydrophile- als auch hydrophobe Oberflächen zu binden, habe ich angenommen dass Hydrophobine auch den enzymatischen Abbau von Polymeren oder die Immobilisierung von Enzymen positiv beeinflussen könnten, indem sie ein Monolayer bilden der die Bindung der Enzyme an polymere Substrate begünstigt. In dieser Masterarbeit zeige ich den Effekt der Anwesenheit von Trichoderma virens GST-HFB4 Fusions-Proteinen auf die enzymatische Aktivität von gelösten und immobilisierten Enzymen als Proof of Concept. Die ursprüngliche Hypothese war, dass T. virens Hydrophobine die Aktivität von Polymer-abbauenden Enzymen erhöhen könnten. Die Aktivität von freien Cellulasen im Vorhandensein von GST-HFB4 zeigte sich hingegen als nicht beeinträchtigt und aufgrund dieses Ergebnisses fokussierten wir auf der Enzymimmobilisierung mittels Hydrophobinen. Die in dieser Arbeit beschriebenen Ergebnisse zeigen die Steigerung der Aktivität von Glucose Oxidase durch Immobilisierung an Kapton, mittels HFB7-(His)6.
description: Hydrophobins are common for filamentous fungi. Since now, their role in surface hydrophobicity, fruit body formation and sporulation has been reported. Due to their ability to attach both to hydrophilic and to hydrophobic surfaces, we hypothesized that they could enhance the enzymatic degradation of polymers by creating a monolayer, which aids the enzyme to bind the polymeric substrate or they can increase the efficiency of enzyme binding in the non-covalent enzyme immobilization. In this work, we present the effects of GST-HFB4 fusion protein from Trichoderma virens on the enzyme activity both in solution and when immobilized, as a proof of concept. Our initial hypothesis was that hydrophobins from T. virens could enhance activity of enzymes used for polymer degradation. However, due to the fact that GST-HFB4 has not affected cellulases- activity in their free form, we focused on the hydrophobin-mediated immobilization of enzymes to test the hypothesis, if hydrophobins are able to bind more enzyme activity to the surface of porous glass beads. The data obtained in this thesis depicts a positive effect on the immobilizing of glucose oxidase activity on the surface of kapton membrane with HFB7-(His)6 layer. However, in order to fully understand the differences between activities of different enzymes both in solution and when immobilized, further examinations would be needed and this data could be useful for that purpose.