cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Probing the chirality of 1D Majorana edge states around a 2D nanoflake in a superconductor
Creators: name: Ptok, Andrzej
name: Alspaugh, David J.
name: Głodzik, Szczepan
name: Kobiałka, Aksel
name: Oleś, Andrzej M.
name: Simon, Pascal
name: Piekarz, Przemysław
Publisher: name: arXiv
Year: 2020
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: The interplay between superconductivity, magnetic field and spin-orbit coupling can lead to the realization of non--trivial topological phases. Recent experiments have found signatures of such phases in magnetic nanoflakes formed by nanostructures coupled to a superconducting substrate. These heterostructures comprise a topologically non-trivial region surrounded by a trivial one due to the finite magnetic exchange field induced by the magnetic nanoflake. The analysis of the topological phase diagram of such a system shows that a similar phase separation occurs by tuning the chemical potential of the nanoflake. In this paper, we study such a possibility in detail, analyzing the spatial extent of the edge modes circulating around the nanoflake and discussing some practical implementations. We also show how the chirality of Majorana edge states can be probed using scanning tunneling spectroscopy with a double tip setup.
description: 12 pages, 13 figures
Physical effects on the Lyman-alpha forest flux power spectrum: damping wings, ionizing radiation fluctuations, and galactic winds
Creators: name: McDonald, P.
name: Seljak, U.
name: Cen, R.
name: Bode, P.
name: Ostriker, J. P.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We explore several physical effects on the power spectrum of the Lyman-alpha forest transmitted flux. The effects we investigate here are usually not part of hydrodynamic simulations and so need to be estimated separately. The most important effect is that of high column density absorbers with damping wings, which add power on large scales. We compute their effect using the observational constraints on their abundance as a function of column density. Ignoring their effect leads to an underestimation of the slope of the linear theory power spectrum. The second effect we investigate is that of fluctuations in the ionizing radiation field. For this purpose we use a very large high resolution N-body simulation, which allows us to simulate both the fluctuations in the ionizing radiation and the small scale LyaF within the same simulation. We find an enhancement of power on large scales for quasars and a suppression for galaxies. The strength of the effect rapidly increases with increasing redshift, allowing it to be uniquely identified in cases where it is significant. We develop templates which can be used to search for this effect as a function of quasar lifetime, quasar luminosity function, and attenuation length. Finally, we explore the effects of galactic winds using hydrodynamic simulations. We find the wind effects on the LyaF power spectrum to be be degenerate with parameters related to the temperature of the gas that are already marginalized over in cosmological fits. While more work is needed to conclusively exclude all possible systematic errors, our results suggest that, in the context of data analysis procedures where parameters of the LyaF model are properly marginalized over, the flux power spectrum is a reliable tracer of cosmological information.
description: 13 pages, 8 figures, to be submitted to MNRAS
BOSHLANG`ICH SINF O`QUVCHILARNING  KREATIV  QOBILIYATINI   TAKOMILLASHTIRISH
Creators: name: Termiz  iqtisodiyot  va servis  universiteti Boshlang'ich ta'lim  yo'nalishi 1-boqich talabasi Norxamidova  Ruxshona  Shavqidin qizi
Publisher: name: Zenodo
Year: 2025

description: Mazkur maqolada boshlang‘ich sinf o’quvchilarida  kreativlikni takomillashtirish to‘g‘risida fikr mulohazalar bayon etilgan. Boshlang‘ich sinf o‘quvchilarida zarur bilim, ko‘nikma va malakalarga ega bo‘lishlari va hayotga tatbiq eta olishlarida ulardagi kreativ fikrlash motivatsiyalarining o‘rni va ahamiyati haqida yoritib berilgan. Shuningdek, boshlang‘ich sinf o‘quvchilarining kreativ fikrlash qobilyatlarini aniqlash va kreativ fikrlash motivatsiyalarini rivojlantirishning o‘ziga xos usullari haqida fikr yuritilgan.

         Kalit so’zlar: ta ‘lim, metodika, tafakkur, kreativlik, belgi, mashq, fikrlash, ijodkorlik, fikrlash,erkinlik.
Les propositions législatives de réforme de la PAC (octobre 2011) : premiers éléments d’analyse
Creators: name: Chatellier, Vincent
name: Guyomard, Herve
name: Chatellier, Vincent
name: Guyomard, Herve
Publisher: name: Unknown
Year: 2012
Subjects: Agricultural and Food Policy

description: Le 12 octobre 2011, la Commission européenne a présenté un ensemble de propositions législatives destinées à réformer, une nouvelle fois, la Politique agricole commune (PAC), théoriquement au 1er janvier 2014. Outre le fait de veiller à ce que la PAC soit plus efficace, l’objectif affiché est, d’une part, de favoriser une agriculture compétitive et durable et, d’autre part, de dynamiser les zones rurales. Aussi innovantes qu’elles puissent être, ces propositions s’inscrivent dans la continuité d’un long processus de réforme de la PAC engagé en 1992 (réforme dite « McSharry »), et poursuivi en 1999 (« Agenda 2000 »), 2003 et 2008 (« bilan de santé de la PAC »). Ces propositions de réforme de la PAC, qui laissent une place importante au principe de subsidiarité, sont susceptibles d’entraîner une réorientation significative des aides directes entre catégories d’exploitations agricoles et entre régions, notamment dans les pays comme la France où le modèle de la référence historique pour le calcul des droits à paiement unique (DPU) prévaut.
First-principles study on field evaporation of surface atoms from W(011) and Mo(011) surfaces
Creators: name: Ono, Tomoya
name: Sasaki, Takashi
name: Otsuka, Jun
name: Hirose, Kikuji
Publisher: name: arXiv
Year: 2004
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The simulations of field-evaporation processes for surface atoms on W(011) and Mo(011) surfaces are implemented using first-principles calculations based on the real-space finite-difference method. The threshold values of the external electric field for evaporation of the surface atoms, which are $\sim$ 6 V/Å2mm for tungsten and $\sim$ 5 V/Å2mm for molybdenum, are in agreement with the experimental results. Whereas field evaporation has been believed to occur as a result of significant local-field enhancement around the evaporating atoms, in this study, the enhancement is not observed around the atoms but above them and the strength of the local field is much smaller than that expected on the basis of the classical model.
description: 9 pages and 4 figures
Perspectives 2010-2020 des marchés et des revenus agricoles de l’Union européenne
Creators: name: Levert, Fabrice
name: Le Mouel, Chantal
name: Jean, Sebastien
name: Levert, Fabrice
name: Le Mouel, Chantal
name: Jean, Sebastien
Publisher: name: Unknown
Year: 2012
Subjects: Demand and Price Analysis

description: Les enjeux de l’évolution de la Politique agricole commune (PAC) après 2013 sont étroitement liés à la situation qui prévaudra sur les marchés agricoles communautaires et internationaux dans la prochaine décennie. Nous proposons ici une synthèse et une discussion de l’information existante quant à l’évolution des marchés des produits agricoles après 2010, en nous appuyant sur trois projections à horizon 2020 ou 2025 proposées par des organismes internationaux : (i) les « Perspectives pour les marchés et les revenus agricoles de l’Union européenne » centrées sur les projections (ici, 2010-2020) des marchés communautaires des grands produits agricoles et accompagnées d’une analyse de l’évolution induite des revenus agricoles, produites par la Commission européenne (CE) ; (ii) les projections 2011-2020 des marchés mondiaux agricoles réalisées par l’OCDE et la FAO, à l’aide du modèle AGLINK/COSIMO ; et, (iii) les projections 2011-2025 fournies par l’institut américain FAPRI, avec le modèle éponyme. Les principaux résultats indiquent une hausse modérée des prix agricoles avec un risque accru de variabilité, une croissance des productions végétales soutenue par la demande en biocarburants, une forte exposition à la concurrence des productions animales communautaires. Ces résultats sont fragilisés par le contexte économique incertain et sont surtout sensibles aux hypothèses concernant les réserves de productivité et les comportements de demande.
Identificação em Malha Fechada e Análise de Incertezas Paramétricas para Controle de pH em Máquina de Produção de Papelcartão
Creators: name: ALMEIDA, ALEXANDRE MARQUES DE
name: Lenzi, Marcelo Kaminski
name: Silva, Geraldo Sales Da
name: Neitzel, Ivo
Publisher: name: figshare
Year: 2020
Subjects: subject: 90499 Chemical Engineering not elsewhere classified
subject: FOS: Chemical engineering
subject: 90602 Control Systems, Robotics and Automation
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: 91006 Manufacturing Processes and Technologies (excl. Textiles)

description: Neste trabalho é abordada a identificação em malha fechada para controle do pH da caixa de entrada em uma máquina de produção de papel cartão multicamada, frente a incertezas paramétricas. Para tanto, a estratégia de controle estudada foi um controlador feedback PI para o problema servo (transição de set-point). O sistema foi identificado em malha fechada por meio de estimação de parâmetros (considerando um modelo de 1ª. ordem para o processo). O modelo matemático foi obtido analiticamente pelo equacionamento das raízes complexas das funções de transferência. Os resultados permitiram comparar cinco métodos de sintonia com intervalo de confiança das respostas dinâmicas determinadas através da propagação de erros dos parâmetros kP e τP, do modelo. Além disso, foi determinado o valor do índice de desempenho ISE com suas incertezas paramétricas. Para uma melhor avaliação da robustez das sintonias estudadas, foi também proposto o índice de desempenho IPE (integral da propagação de erros) para as respostas da variável controlada e manipulada. Assim, é possível concluir que muitas técnicas de sintonia são estatisticamente iguais, onde o método proposto por Brambilla et al. (1990) foi o que apresentou um resultado com maior desempenho caracterizando a metodologia que melhor agregou as incertezas paramétricas propagadas na sua resposta.
Minocycline as a neuroprotective agent following spinal cord injury
Creators: name: Stirling, David Paul
Publisher: name: University of British Columbia
Year: 2009

description: The mechanical impact of a spinal cord injury (SCI) triggers a cascade of secondary damage that progressively destroys an increasing amount of tissue adjacent to the primary lesion over a period of hours to weeks. The pathophysiological changes lead to necrotic, as well as apoptotic death, inflammation, demyelination, and axonal damage. In their wake, a fluid-filled cavity often forms leaving a small rim of spared white matter. While the initial mechanically destructive events cannot be reversed, the cellular inflammatory reactions occur over several hours to weeks, a timeframe during which therapeutic intervention may be achieved. This thesis examines the efficacy of minocycline, a 2nd generation tetracycline-derivative, in attenuating secondary degeneration after SCI. The results of the first series of experiments indicate that the peak of apoptosis within the ascending sensory tracts (AST) following dorsal column transection in rats occurs at one to two weeks after injury. Numerous apoptotic profiles are located within both the proximal and distal segments of the AST after injury. Although oligodendrocytes undergo apoptosis as well as microglia, the latter are the main cell type to undergo apoptosis in this model. Importantly, minocycline administration delayed up to 30 minutes after injury, significantly reduces apoptosis, prevents corticospinal tract axonal dieback, diminishes lesion size and promotes functional recovery following a dorsal column transection. The results from the second series of experiments show that minocycline treatment reduces levels of mRNA and activation of p38 mitogen-activated protein kinase (MAPK) after SCI. In addition, p38 MAPK increases early after SCI and colocalizes with neutrophils, and microglia/macrophages. The final series of experiments assessed the efficacy of minocycline or the p38 MAPK inhibitor SB203580 in promoting neurological recovery utilizing a contusion model of SCI in rats to more closely mimic the injury seen in humans. The results from these experiments indicate that delayed minocycline treatment (1 hour after injury) administered intravenously promotes tissue preservation and functional recovery after SCI. Collectively, these findings suggest that several aspects of the secondary degeneration that occurs after SCI can be prevented by minocycline application, and supports its use as a potential neuroprotective treatment following human SCI.
Quelle(s) intervention(s) publique(s) pour la gestion des risques de marché en agriculture ?
Creators: name: Cordier, Jean
name: Gohin, Alexandre
name: Cordier, Jean
name: Gohin, Alexandre
Publisher: name: Unknown
Year: 2012
Subjects: Public Economics

description: Après avoir synthétisé les résultats des analyses économiques conduites sur la gestion des risques de marché en agriculture, sujet complexe et récurrent dans les débats de politique agricole, nous suggérons quelques pistes de réflexion pour guider l’action politique. Ainsi, cette action doit d’abord être portée sur la régulation (contrôle) des marchés de gestion des risques plutôt que sur les marchés physiques. La mise en oeuvre de cette recommandation générale nécessite la poursuite de travaux économiques spécifiques.
Le bilan mitigé des politiques européennes de développement rural
Creators: name: Schmitt, Bertrand
name: Aubert, Francis
name: Schmitt, Bertrand
name: Aubert, Francis
Publisher: name: Unknown
Year: 2012
Subjects: Agricultural and Food Policy
Community/Rural/Urban Development
Public Economics

description: La politique européenne de développement rural est largement contenue dans ce qui est communément appelé le second pilier de la Politique agricole commune (PAC), géré par un Règlement de développement rural (RDR) et à l’appui duquel a été constitué un Fonds européen agricole pour le développement rural (FEADER). Son mode d’intervention est moins basé sur l’aide directe que sur l’appui aux projets en associant collectivités territoriales et Etats-membres pour promouvoir les activités et le cadre de vie en milieu rural. Toutefois, un autre plan de l’intervention communautaire, la politique de cohésion, concerne également les espaces ruraux. L’impact de ces deux volets de l’intervention communautaire sur le développement des territoires ruraux apparaît limité et ne répond qu’imparfaitement aux enjeux contemporains de leurs évolutions. Une double articulation doit être opérée pour appréhender les réalisations des programmes en cours et pour envisager leur évolution : d’un côté, avec le premier pilier de la PAC et la dynamique spatiale de l’agriculture ; de l’autre côté, avec les actions sociales et de développement régional qui touchent aussi bien la ville que la campagne.
Inverse scattering for vowel articulation with frequency-domain data
Creators: name: Aktosun, Tuncay
Publisher: name: arXiv
Year: 2004
Subjects: subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences
subject: 34A55; 35R30; 76Q05

description: An inverse scattering problem is analyzed for vowel articulation in the human vocal tract. When a unit amplitude, monochromatic, sinusoidal volume velocity is sent from the glottis towards the lips, various types of scattering data are used to examine whether the cross sectional area of the vocal tract can uniquely be determined by each data set. Among the data sets considered are the absolute value of the pressure measured at a microphone placed at some distance from the lips, the pressure at the lips, and the transfer function from the glottis to the lips. In case of nonuniqueness, it is indicated what additional information may be used for the unique determination.
description: 29 pages, 9 figures
PAC et environnement : les biens publics en agriculture
Creators: name: Desjeux, Yann
name: Dupraz, Pierre
name: Thomas, Alban
name: Desjeux, Yann
name: Dupraz, Pierre
name: Thomas, Alban
Publisher: name: Unknown
Year: 2012
Subjects: Agricultural and Food Policy
Environmental Economics and Policy

description: Les réformes successives de la politique agricole commune (PAC) depuis les années 1990 ont progressivement introduit les questions environnementales dans ses objectifs. Cependant, la PAC reste une politique sectorielle d’adaptation de l’outil de production et de soutien au revenu agricole. Les mesures agri-environnementales (MAE) de la PAC constituent l’instrument le plus ciblé sur les contributions de l’agriculture à l’environnement, mais elles sont dotées d’un budget relativement modeste, sont basées sur l’adoption volontaire (avec un faible taux constaté) et leur durée limitée rend difficile des changements structurels significatifs. La conditionnalité des aides au respect de règles sanitaires et environnementales est un dispositif peu efficace par construction car les paiements ne sont pas proportionnels aux services environnementaux rendus. Si l’essentiel du soutien au revenu agricole est financé par le budget européen, le soutien aux biens publics par les MAE est, lui, financé à la fois par le budget européen et par les Etats ou les régions, avec une augmentation continue de la partie européenne. Or, le soutien au revenu agricole assurant un certain degré de cohésion sociale est davantage une question régionale ou nationale qu’une question européenne, alors que certains biens publics fournis par l’agriculture bénéficient à l’ensemble des citoyens européens. La fourniture de biens publics par l’agriculture est donc une opportunité pour refonder la PAC autour d’objectifs communs aux Etats membres, et consacrer le soutien public à l’agriculture à la production de biens publics devient une question centrale.
A Magnetic Velocity Verlet Method
Creators: name: Chambliss, A.
name: Franklin, J.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Classical Physics (physics.class-ph)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences

description: We discuss an extension of the velocity Verlet method that accurately approximates the kinetic-energy-conserving charged particle motion that comes from magnetic forcing. For a uniform magnetic field, the method is shown to conserve both particle kinetic energy and magnetic dipole moment better than midpoint Runge-Kutta. We then use the magnetic velocity Verlet method to generate trapped particle trajectories, both in a cylindrical magnetic mirror machine setup, and for dipolar fields like the earth's magnetic field. Finally, the method is used to compute an example of (single) mirror motion in the presence of a magnetic monopole field, where the trajectory can be described in closed form.
description: To appear, American Journal of Physics
La réorientation des soutiens directs à l’agriculture
Creators: name: Chatellier, Vincent
name: Guyomard, Herve
name: Chatellier, Vincent
name: Guyomard, Herve
Publisher: name: Unknown
Year: 2012
Subjects: Agricultural and Food Policy
Public Economics

description: Dans le cadre des réflexions portant sur l’avenir de la Politique agricole commune (PAC), la question du mode d’octroi des aides directes aux exploitations agricoles européennes occupe une place de choix. Elle suscite aujourd’hui des débats très vifs pour trois raisons principales. i) Les Etats membres doivent s’accorder, dans un contexte économique délicat, sur le futur budget de l’Union européenne (UE) pour la période 2014-2020. ii) La volatilité accrue des cours des produits agricoles tend à fragiliser la légitimité d’un dispositif de soutien basé essentiellement sur des paiements découplés et donc indépendants des prix perçus. iii) Les autorités communautaires souhaitent réorienter, au travers de nouveaux textes réglementaires (octobre 2011), une partie des aides directes dans le sens d’une meilleure rétribution des fonctions environnementales de l’agriculture. Nous revenons ici sur les trois sujets principaux qui ont alimenté notre réflexion depuis 2008 : l’analyse des effets redistributifs des mesures prises dans le cadre du bilan de santé de la PAC ; l’évaluation de la sensibilité économique des exploitations agricoles à plusieurs hypothèses de redistribution des aides directes ; et le développement d’un argumentaire sur les atouts et les limites des soutiens découplés dans un nouveau contexte et face aux nouveaux défis auxquels les agricultures française et européenne sont confrontées.
title: Statistical analysis of breast cancer: The effects of missing values on survival data
Creators: name: Thomson, Catherine S.
Publisher: name: University of Glasgow
Year: 1999
Subjects: subject: Biostatistics.

description: Worldwide, breast cancer is the most common cancer in women. In Scotland, there are currently over 3,000 women diagnosed with the disease each year and the incidence continues to rise. Despite some major advances in the treatment of breast cancer, with the discovery of tamoxifen and the on-going development of cytotoxic drugs, only 60% of women are still alive after five years, many of whom have a relapse at some later stage. Against that background, the main aims of this thesis are to interpret the findings of a survival analysis of cases of breast cancer in Scotland; to investigate whether the method of including extra categories for unknown values in factors in that analysis is appropriate; and to check whether the assumption of proportional hazards is valid. Chapter 1 provides a general introduction, whilst Chapter 2 examines the burden that breast cancer places on the National Health Service in Scotland and throughout the world. The risk factors for getting the disease and the different strategies available for treatment of the cancer are also presented. To identify how women with breast cancer in Scotland were managed. Chapter 3 outlines some background to a national retrospective audit of all cases of invasive breast cancer in the years 1987 and 1993. Analyses of a subgroup of the 1987 cohort constitute the majority of this thesis. Chapter 4 examines the associations among the variables included in the survival analysis. The patterns among the missing values in four of the prognostic factors are also investigated, using log-linear- modelling. The method employed in analysing this cohort of women was to create extra categories to represent unknown values in each of the factors. Other techniques available for handling missing values in models are discussed, along with a summary of the methods used in other relevant studies of breast cancer survival. Chapter 5 presents a survival analysis of the cohort, including a discussion of the findings in relation to other relevant studies. Model checking is performed on the best fit model to assess the adequacy of the fit of it and to validate the assumption of proportional hazards. The remainder of the chapter focuses on a comparison of the results from fitting Cox models using the additional categories and the complete cases methods. This investigates whether different interpretations would be concluded from these models. In Chapter 6, simulated datasets are generated using exponential distributions to investigate whether the proportional hazards assumption is valid when additional categories are used to extend two factors at two levels to three levels in an exponential regression model. The extent of any biases for the parameter estimates is examined. Chapter 7 provides a summary of the key conclusions and highlights areas of future research.
1714: Pte Robert Crossland (photographs; letters; postcards)
Creators: name: Project Team, Lest We Forget
Publisher: name: University of Oxford
Year: 2024
Subjects: classificationCode: 430304
subject: British history
classificationCode: 430308
subject: European history (excl. British, classical Greek and Roman)
classificationCode: 430316
subject: International history

description: Robert was the great uncle of Menston resident Robert Crossland (he was named after his great uncle).

Private Robert Crossland was born on the 2nd May 1889 to James William band Ann Crossland and lived with his Brother William Issac and two sisters, Agnes and Jenny at 11 Fourth Avenue, New Wortley, Leeds 12. His occupation, at the time of the 1911 census, was recorded as cloth drawer. He married Clarice Amelia Swales (Cissie) on the 26th December 1914 in the Wesleyan Chapel, Holbeck, Leeds.

Before the war, Robert was a keen cricketer, having been part of the Holbeck A Team who were Leeds League Winners in 1913.

Robert enlisted into the 248 ‘D’ Coy. 15th Bn. West Yorkshire Regiment (Prince of Wales Own), Service Number 248 which suggests he volunteered within the first few days of the conflict. Following training, he was put into ‘D’ Coy N. 16 Platoon and commenced training in September 1914 at Colsterdale. In a letter home to his Brother Will dated 10th March 1915 he wrote saying “we are training very hard now and last Thursday we walked to Leyburn in Wensleydale. Wensleydale is fine country and the snow capped hills towering above the green fields looked well. On Monday we walked to Bedale and were a trifle footsore”. He goes on to say “I think it is time we were taught to shoot with service rifles and have received a few articles of clothing and kit at last."

The ‘Pals’ left Colsterdale on 7th December 1915 and set sail to Egypt to defend the Suez Canal from the threat of the Ottoman Empire, arriving on the 22nd December 1915. The company left Port Said for Marseilles en route to the Western Front on the 1st March 1916 on the Cunard RMS Ascania and arrived on 8th March 1916. In a postcard sent to his brother Will dated 10th March having arrived in Marseille, Robert described the journey as a ‘pleasant voyage’.

On the 1st July 1916, the first day of the Battle of the Somme, the Battalion sustained heavy losses in the first few minutes of the attack.

Robert was taken prisoner on the 27th March 1918 at Ervillers and arrived from the Western Front at Parchim as a POW. At the end of August, he was moved to Meschede POW camp where he died on the 18th November 1918, just seven days after the Armistice. Red Cross documentation details the cause of death as pneumonia.

Robert was awarded campaign medals – the 15 Star, Victory Medal and the British War Medal.

Memorial: Niederzwehren Cemetery, Germany. Ref. E.12
Análise de Incertezas Paramétricas em Malhas de Controle de Processos
Creators: name: ALMEIDA, ALEXANDRE MARQUES DE
Publisher: name: figshare
Year: 2020
Subjects: subject: 90403 Chemical Engineering Design
subject: FOS: Chemical engineering
subject: 90499 Chemical Engineering not elsewhere classified
subject: Computer Engineering
subject: 90602 Control Systems, Robotics and Automation
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: Em processos industriais complexos com dinâmica não-linear, existe um grande número de malhas de controle que necessitam de manutenção e adequada sintonia. Diversos índices de desempenho podem ser aplicados para avaliação da qualidade de uma sintonia, como a integral do erro ao quadrado (ISE) e a integral da variável manipulada (IU). No entanto, pouca atenção é dada às incertezas paramétricas referentes ao modelo matemático do processo e ao método de sintonia escolhido. Técnicas clássicas de controle de processos em malha fechada, como por exemplo, o PI (Proporcional e Integral), possuem erros ou incertezas em seus parâmetros inerentes ao projeto desses sistemas. Suas incertezas podem ser estimadas através da teoria estatística de propagação de erros. Neste trabalho, foram abordados dois estudos de caso de controle de processos frente à incertezas paramétricas: controle da concentração de amônia da corrente de topo em uma coluna de absorção de gás e controle do pH da caixa de alimentação da máquina de papelcartão multicamada em uma indústria de celulose e papel. Para tanto, a estratégia de controle estudada foi o controlador feedback PI para o problema servo (transição de set-point). Os sistemas foram identificados em malha aberta (coluna de absorção) e em malha fechada (máquina de papel) por meio da estimação dos parâmetros (considerando modelos de 1ª. ordem para o processo). O modelo matemático foi obtido analiticamente pelo equacionamento das raízes complexas das funções de transferência. Os resultados permitiram comparar dezoito métodos de sintonia com intervalo de confiança das respostas dinâmicas determinadas através da propagação de erros dos parâmetros e dos modelos. Além disso, foram determinados os valores dos índices de desempenho ISE e IU com suas incertezas paramétricas. Para uma melhor avaliação da robustez das sintonias estudadas, foi também proposto o índice de desempenho IPE (integral da propagação de erros) para as respostas da variável controlada e manipulada. Assim, pode-se concluir que muitas técnicas de sintonia são estatisticamente iguais, onde a melhor sintonia para a coluna de absorção foi o método proposto por SREE et al. (2004) & CHIDAMBARAM et al. (2005) e para a máquina de papel foi o método proposto por BRAMBILLA et al. (1990).
Crescent Singularities in Crumpled Sheets
Creators: name: Liang, Tao
name: Witten, Thomas A.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: We examine the crescent singularity of a developable cone in a setting similar to that studied by Cerda et al [Nature 401, 46 (1999)]. Stretching is localized in a core region near the pushing tip and bending dominates the outer region. Two types of stresses in the outer region are identified and shown to scale differently with the distance to the tip. Energies of the d-cone are estimated and the conditions for the scaling of core region size R_c are discussed. Tests of the pushing force equation and direct geometrical measurements provide numerical evidence that core size scales as R_c ~ h^{1/3} R^{2/3}, where h is the thickness of sheet and R is the supporting container radius, in agreement with the proposition of Cerda et al. We give arguments that this observed scaling law should not represent the asymptotic behavior. Other properties are also studied and tested numerically, consistent with our analysis.
description: 13 pages with 8 figures, revtex. To appear in PRE
Modelagem, Simulação e Controle de Um Sistema de Evaporação Múltiplo Efeito de Licor Negro
Creators: name: ALMEIDA, ALEXANDRE MARQUES DE
name: Neitzel, Ivo
Publisher: name: figshare
Year: 2020
Subjects: subject: 90499 Chemical Engineering not elsewhere classified
subject: FOS: Chemical engineering
subject: 90403 Chemical Engineering Design
subject: Computer Engineering
subject: 90602 Control Systems, Robotics and Automation
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: Nas indústrias de celulose e papel, a função do processo de evaporação é a de concentrar o licor negro diluído, proveniente do sistema de lavagem da polpa celulósica, a uma concentração acima de 60% de sólidos para ser injetado na caldeira de recuperação, onde serão recuperados os produtos inorgânicos do processo Kraft.Para tanto, se faz necessário um controle eficiente neste processo para garantir a otimização das suas condições operacionais. Neste trabalho foi modelado, simulado eimplementado estratégias de controle do nível de licor nos efeitos e da concentração de sólidos do licor negro de um sistema de evaporação múltiplo efeito, composto por seisestágios e de alimentação direta. A modelagem matemática da evaporação foi realizada por meio de modelos fenomenológicos a partir de balanços materiais e energéticos, utilizando correlações para as propriedades físicas do licor negro (GULLICHSEN e FOGELHOLM (2000) e do vapor saturado (PERRY e GREEN (1999)). O programa simulador foi desenvolvido em linguagem computacional FORTRAN no compilador Microsoft Visual Studio. Para o sistema de controle convencional foram utilizadas algoritmos de controle proporcional (P) e proporcional integral (PI). Além disso, foi implementado um sistema de controle avançado preditivo para a concentração de sólidos do licor negro na saída da evaporação, através de um controlador por matriz dinâmica (DMC) do tipo SISO (uma entrada e uma saída) pertencente à família de controladores baseado em modelo (MPC). Comparando essas estratégias de controle através de índices de desempenho quadráticos para a variável controlada (ISE) e para a variável manipulada (ISU). Com os controladores sintonizados, foi então, comparado o desempenho destes, comprovando a superioridade e robustez do controlador DMC frente aos controles convencionais, proporcional (P) e proporcional integral (PI).
L’agriculture et l’agroalimentaire français à la recherche d’une compétitivité perdue
Creators: name: Butault, Jean-Pierre
name: Requillart, Vincent
name: Butault, Jean-Pierre
name: Requillart, Vincent
Publisher: name: Unknown
Year: 2012
Subjects: Production Economics
Productivity Analysis

description: La compétitivité de l’agriculture et de l’agroalimentaire européens est l’un des objectifs de la Politique agricole commune (PAC) depuis sa création en 1958. Cet objectif est réaffirmé dans les propositions de la commission pour la PAC après 2013. Pourtant, cette compétitivité s’est fragilisée au cours de la dernière décennie comme en témoigne l’évolution du déficit de la balance commerciale de l’Union à 27 qui est passé de 7 à 11 milliards d’euros entre 2000 et 2009. En France, la production agricole stagne depuis quinze ans, les gains de productivité s’essoufflent et les importations de produits agricoles et alimentaires progressent plus vite que les exportations.
Neutral Pions with Large Transverse Momentum in d+Au and Au+Au Collisions
Creators: name: Buesching, Henner
Publisher: name: arXiv
Year: 2004
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: Measurements of transverse-momentum p_T spectra of neutral pions in Au+Au and d+Au collisions at sqrt{s_NN}=200 GeV and 62.4 GeV by the PHENIX experiment at RHIC in comparison to p+p reference spectra at the same sqrt{s_NN} are presented. In central Au+Au collisions at sqrt{s_NN}=200 GeV a factor 4-5 suppression for neutral pions and charged hadrons with p_T > 5 GeV/c is found relative to the p+p reference scaled by the nuclear overlap function < T_AB >. In contrast, such a suppression of high-p_T particles is absent in d+Au collisions independent of the centrality of the collision. To study the sqrt{s_NN} dependence of the suppression Au+Au collisions at sqrt{s_NN}=200 GeV and 62.4 GeV are compared.
description: 7 pages, 5 figures, presented at Hot Quarks 2004, Taos, NM
title: 02_1109
Creators: name: Wesley Baldwin, John
name: Baldwin, John W.
Publisher: name: NAKALA - https://nakala.fr (Huma-Num - CNRS)
publisherIdentifier: https://ror.org/04ces3204
publisherIdentifierScheme: ROR
Year: 2018
Subjects: subject: LaMOP
subject: Laboratoire de Médiévistique Occidentale de Paris

description: L'ensemble de ces notes ont été crée par John Baldwin lors d'une de ses premières périodes de résidence à Paris. Ces documents comprennent tous les magistri qu’il avait pu rencontrer dans ses sources. Aux XIIème et XIIIème siècles, les universités n'existant pas encore, le titre de magister s'il évoque certainement une compétence n'est pas rattaché de façon systématique au passage par les écoles. De surcroît, les magistris sont le plus souvent désignés par leur seul prénom. La lecture de ces données est donc difficile et suppose un long travail pour tenter d'identifier un individu auquel on pourrait rattacher plusieurs mentions. John Baldwin avait donc renoncé à utiliser ces données pour donner un prolongement à sa magnifique étude sur les gradués d'université et leur emploi par les Capétiens et les Plantagenêts. Néanmoins, il a conservé ces données et elles sont potentiellement très utile dans le cadre de Studium, comme le sont toutes les mentions dans les volumes des Fasti Ecclesiae Gallicanae de chanoines portant ce titre de magister sans autres précisions. L'ampleur des dépouillements rend ces données très utiles et nous devons une grande reconnaissance à John Baldwin pour avoir pris la peine de faire photocopier ses fiches et de nous les avoir transmises amicalement.
Les données ainsi que les images des fiches sont accessibles sur le site Internet à l'adresse suivante : http://studium-baldwin.lamop.fr/.
Les transcriptions des fiches ont été effectuées par des étudiants de Paris 1 Panthéon - Sorbonne mais elles n'ont pas été corrigées par la suite.
description: Relation: https://lamop.hypotheses.org/
Beschäftigungseffekte der Gemeinsamen Agrarpolitik in der ostdeutschen Landwirtschaft
Creators: name: Petrick, Martin
name: Zier, Patrick
name: Petrick, Martin
name: Zier, Patrick
Publisher: name: Unknown
Year: 2011
Subjects: Agricultural and Food Policy
Labor and Human Capital

description: In der derzeitigen Diskussion um die Reform der Gemeinsamen Agrarpolitik (GAP) spielt das Argument der positiven Beschäftigungswirkungen eine zentrale Rolle. Wir untersuchen seine Stichhaltigkeit mithilfe einer Ex-Post-Evaluierung der Zahlungen in 69 Landkreisen Brandenburgs, Sachsens und Sachsen-Anhalts zwischen 1999 und 2006. Wir verwenden ein aus der Arbeitsmarktforschung bekanntes statistisches Verfahren, um die Beschäftigungswirkungen des gesamten Maßnahmenbündels der GAP simultan abzubilden. Die Ergebnisse legen nahe, dass Investitionsbeihilfen und Agrarumweltmaßnahmen arbeitsintensive Technologien in der Produktion halten oder sie induzieren. Die Ausgleichszulage für benachteiligte Gebiete und die Mittel zur Dorferneuerung zeigten keine Beschäftigungseffekte. Weiterhin stützen die Ergebnisse die Vermutung, dass die Entkopplung der Direktzahlungen im Jahre 2005 sowie ihre graduelle Erhöhung im Beobachtungszeitraum zu Arbeitsplatzverlusten führten, da sie die Zahlungen von den Produktionsergebnissen und vom Arbeitseinsatz unabhängig machten. Auch erhöhte Mittel für Verarbeitung und Vermarktung gingen teilweise mit einer Verringerung der Beschäftigung in der Landwirtschaft einher. Die Rechtfertigung der GAP über die Sicherung von Arbeitsplätzen steht dieser Analyse zufolge auf tönernen Füßen. Wenn dieses Ziel mit Hilfe der GAP angestrebt werden soll, kann es am ehesten über Maßnahmen der „zweiten Säule“ erreicht werden.
The complex structure of low luminosity AGN : NGC 4579
Creators: name: Contini, Marcella
Publisher: name: arXiv
Year: 2004
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We have modelled the low luminosity AGN NGC 4579 by explaining both the continuum and the line spectra. It was found that the nuclear emission is dominated by an AGN. However, a young starburst, an older starburst with age of 4.5 Myr, and shock dominated clouds with velocities of 100, 300, and 500 km/s also contribute. HII regions appear in the the extended regions (about 1 kpc), where radiation and shock dominated clouds with Vs=100 km/s prevail. The continuum SED of NGC 4579 is characterized by the strong flux from an old stellar population. Emissions in the radio range show synchrotron radiation from the base of the jet outflowing from the accretion disc within 0.1 pc from the active centre. Radio emission within intermediate distances (10-20 pc) is explained by the bremsstrahlung from gas downstream of low velocity shocks (Vs=100 km/s) reached by a relatively low radiation flux from the AC. In extended regions (>100 pc) the radio emission is synchrotron radiation created by the Fermi mechanism at the shock front. The shocks are created by collision of clouds with the jet. ~
description: 10 pages, 7 figures. in press in the MNRAS
Ein schöner spruch, darinn deren von Costantz seltzame Renckh vnd Abentheür, damitt Sy vmbgon/ begriffen syen, ...; [1529]
Creators: name: Treger, Conrad
Publisher: name: Universitätsbibliothek der Ludwig-Maximilians-Universität München
Year: 2015

description: Bibliogr. Nachweis: VD16 T 1866. - Verf. ermittelt. - Erscheinungsvermerk nach der Zuordnung des VD16
Current-spin coupling for ferromagnetic domain walls in fine wires
Creators: name: Barnes, S. E.
name: Maekawa, S.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The coupling between a current and a domain wall is examined. In the presence of a finite current and the absence of a potential which breaks the translational symmetry, there is a perfect transfer of angular momentum from the conduction electrons to the wall. As a result, the ground state is in uniform motion. This remains the case when relaxation is accounted for. This is described by, appropriately modified, Landau-Lifshitz-Gilbert equations.
description: 4 pqges, no figures
L'Orphée [et Meslanges poétiques]
Creators: name: L’Hermite, Tristan
Publisher: name: NAKALA - https://nakala.fr (Huma-Num - CNRS)
publisherIdentifier: https://ror.org/04ces3204
publisherIdentifierScheme: ROR
Year: 2025
Subjects: Édition en ligne
Édition électronique
intertextualité
réutilisation textuelle
réécriture
Orphée
Eurydice
TEI
traitement automatique des langues
TextPAIR
Tracer

description: Cette édition électronique fait partie du projet de thèse intitulé « Analyse et édition d’un corpus littéraire dans l’esprit des humanités numériques. Vers une édition comparative intermédiale innovante accompagnée d’une ressource pour le repérage intertextuel » réalisé par Karolina Suchecka au sein du laboratoire ALITHILA à l’Université de Lille.
description: Source: http://gallica.bnf.fr/ark:/12148/bpt6k1511068j
description: Bibliographic citation: Tristan L'Hermite / L'Orphée [et Meslanges poétiques] / [1641] 1662.
Nahrungsmittelkrise: Protektionismus und Marktreaktionen in osteuropäischen "Getreidenationen"
Creators: name: Glauben, Thomas
name: Götz, Linde
name: Glauben, Thomas
name: Götz, Linde
Publisher: name: Unknown
Year: 2011
Subjects: Agricultural and Food Policy
Crop Production/Industries

description: Die großen östlichen „Getreidenationen“ Russland, Ukraine und Kasachstan verfügen über erhebliche Ausbaupotenziale im Getreideanbau, deren Nutzung zur weltweiten Ernährungssicherung beitragen könnte. Um diese umsetzen zu können, sind neben dem Abbau von Defiziten in der Infrastruktur vor allem verlässliche langfristige Agrarpolitiken notwendig. Am Beispiel des staatlichen „Krisenmanagements“ Russlands, der Ukraine und Kasachstans in der Nahrungsmittelkrise 2007/2008 lässt sich zeigen, dass unüberlegte politische Eingriffe wie Exportrestriktionen und Preiskontrollen die Funktionsfähigkeit von Märkten erheblich beeinträchtigen können.
Low-Dimensional Fluctuations and Pseudogap in Gaudin-Yang Fermi Gases
Creators: name: Tajima, Hiroyuki
name: Tsutsui, Shoichiro
name: Doi, Takahiro M.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Superconductivity (cond-mat.supr-con)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: Pseudogap is a ubiquitous phenomenon in strongly correlated systems such as high-$T_{\rm c}$ superconductors, ultracold atoms and nuclear physics. While pairing fluctuations inducing the pseudogap are known to be enhanced in low-dimensional systems, such effects have not been explored well in one of the most fundamental 1D models, that is, Gaudin-Yang model. In this work, we show that the pseudogap effect can be visible in the single-particle excitation in this system using a diagrammatic approach. Fermionic single-particle spectra exhibit a unique crossover from the double-particle dispersion to pseudogap state with increasing the attractive interaction and the number density at finite temperature. Surprisingly, our results of thermodynamic quantities in unpolarized and polarized gases show an excellent agreement with the recent quantum Monte Carlo and complex Langevin results, even in the region where the pseudogap appears.
description: 6 pages, 5 figures
Major lessons for the CAP reform from the New Member States' perspective
Creators: name: Möllers, Judith
name: Csaki, Csaba
name: Buchenrieder, Gertrud
name: Möllers, Judith
name: Csaki, Csaba
name: Buchenrieder, Gertrud
Publisher: name: Unknown
Year: 2011
Subjects: Agricultural and Food Policy
Community/Rural/Urban Development

description: The current discussion regarding the reform of the Common Agricultural Policy (CAP) is challenging due to the varying needs and interests of the old and new member states (NMS) of the European Union (EU). The NMS still display tremendous disparities in most structural and socio-economic indicators compared to the EU15 average, implying that further sectoral restructuring is needed. The Structural Change in Agriculture and Rural Livelihoods (SCARLED) project, which ran from 2007 until 2010, offers rich empirical insights with a specific focus on these processes in the NMS. This policy brief summarises the projectʼs main policyrelevant results. SCARLED offers three key lessons for CAP reform. First, it claims that the current, uniform CAP only partially addresses the needs of NMS. Second, the regionʼs agriculture still requires support to enhance competitiveness, albeit for a limited time. Third, the issue of small, subsistence-based farms in the region needs to be recognised. However, approaches aiming at poverty alleviation in such subsistence-based households, but also in landless rural households, need to look beyond the agricultural sector. The wider rural economy and improving education, as well as rural-urban linkages, need to be included in any povertyrelated policy approach, be it at the national or the EU level.
The Nuclear Reactions in Standard BBN
Creators: name: Serpico, Pasquale D.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Nuclear Theory (nucl-th)
subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Nowadays, the Cosmic Microwave Background (CMB) anisotropies studies accurately determine the baryon fraction omega_b, showing an overall and striking agreement with previous determinations of omega_b obtained from Big Bang Nucleosynthesis (BBN). However, a deeper comparison of BBN predictions with the determinations of the primordial light nuclides abundances shows slight tensions, motivating an effort to further improve the accuracy of theoretical predictions, as well as to better evaluate systematics in both observations and nuclear reactions measurements. We present some results of an important step towards an increasing precision of BBN predictions, namely an updated and critical review of the nuclear network, and a new protocol to perform the nuclear data regression.
description: 4 pp.,4figs. Few typos corrected and updated refs. to match the version appearing in the proceedings of Conference ``Nuclei in the Cosmos VIII'', Vancouver, BC, Canada, 19-23 Jul 2004, published in Nucl. Phys. A