bluuebunny/crossref_metadata_2025_split huggingface dataset:
Magnetoelastic coupling in strained La0.7Ca0.3MnO3//BaTiO3 Thin Films
Authors: Alberca A. , Azpeitia-Urkia J. , Tornos J. , Munuera C. , Mompean F. J. , Nemes N. M. , Leon C. , Hernando A. , Fehér Titusz , Simon Ferenc , Kirby B. J. , Fitzsimons M. R. , Santamaria J. , Garcia-Hernandez M. 
Published: December 2013

ABSTRACTIn this paper, we explore the interfacial effects appearing in highly strained La0.7Ca0.3MnO3 (LCMO) ultra-thin films (10-12nm) grown on BaTiO3 (BTO) ferroelectric substrates. The strong tendency to phase separation of this optimally doped manganite contributes to the exotic phenomena observed in magnetism and transport experiments: the so-called Matteucci magnetic loops, magnetic granularity and a second metal insulator transition are observed between 50K and the LCMO Curie temperature, 180K. All these properties define the multiferroic character of these heterostructures, which in LCMO//BTO system is strongly linked to magnetoelastic coupling.
Croconic Acid Thin Film Formation for Ferroelectric Gate OFETs
Authors: Ohmi Shun-ichiro , Takayama Kazuaki , Ishiwara Hiroshi 
Published: December 2013

ABSTRACTPentacene-based ferroelectric gate transistors with croconic acid (CrA) thin film was fabricated for the first time. The memory window (MW) of 1.9 V was obtained from the capacitance-voltage (C-V) characteristics of Al/CrA(50 nm)/SiO2/Si(100) metal-ferroelectric-insulator-semiconductor (MFIS) diode, where the deposition temperature of CrA was room temperature (RT). Butterfly type C-V characteristics was observed for Al/CrA(50 nm)/Al/SiO2/ Si(100) metal-ferroelectric-metal (MFM) diode. Furthermore, a pentacene-based p-type organic field-effect transistor (OFET) with CrA gate insulator was fabricated, and clockwise hysteresis loop was observed in ID-VG characteristic, which is attributed to the ferroelectric properties of CrA gate insulator.
Field-induced superconductivity in MoS2
Authors: Zhang Y. J. , Ye J. T. , Iwasa Y. 
Published: December 2013

ABSTRACTWe fabricated MoS2 transistor adopting electric double layer (EDL) as gate dielectric. So far, EDL has realized p-type conducting MoS2 in addition to well-known n-type conduction showing ambipolar operation. In our study, field-effect superconducting transition of MoS2 was realized with maximum TC around 10 K. This TC is the highest not only within MoS2 compounds but also among whole TMDs. The highest TC discovered in this study lies in the carrier density region much smaller than chemically investigated region. Such compounds with small doping level have never been successfully synthesized by chemical method. Furthermore, by combining HfO2 (typical high-k material for FETs) gating with EDL gating, continuous control of carrier density, and thus quantum phase, was demonstrated. As a result, we successfully obtained the phase diagram of MoS2. Interestingly, the TC exhibits strong carrier density dependence, showing dome-shaped superconducting phase. Superconducting dome in other materials than cuprates has been reported only a few times in doped 2D semiconductors. Since FET charge accumulation is basically two dimensional, our result implies the existence of common mechanism for superconducting dome in 2D band insulators.
Atomic and Electronic Structure of Multilayer Graphene on a Monolayer Hexagonal Boron Nitride
Authors: Yelgel Celal , Srivastava Gyaneshwar P. 
Published: December 2013

ABSTRACTThe atomic and electronic structures of multilayer graphene on a monolayer boron nitride (MLBN) have been investigated by using the pseudopotential method and the local density approximation (LDA) of the density functional theory (DFT). We show that the LDA energy band gap can be tuned in the range 41-278 meV for a multilayer graphene by using MLBN as a substrate. The dispersion of the π/π* bands slightly away from the K point is linear with the electron speed of 0.9×106 and 0.93×106 for graphene (MLG)/MLBN and ABA trilayer graphene (TLG)/MLBN systems, respectively. This behaviour becomes quadratic with a relative effective mass of 0.0021 for the bilayer graphene (BLG)/MLBN system. The calculated binding energies are in the range of 10-43 meV per C atom.
Graphene and The Advent of Other Layered-2D Materials for Nanoelectronics, Photonics and Related Applications
Authors: Kaul Anupama B. 
Published: December 2013

ABSTRACTCarbon-based nanostructures have been the center of intense research and development for more than two decades now. Of these materials, graphene, a two-dimensional (2D) layered material system, has had a significant impact on science and technology in recent years after it was experimentally isolated in single layers in 2004. The recent emergence of other classes of 2D layered systems beyond graphene has added yet more exciting and new dimensions for research and exploration given their diverse and rich spectrum of properties. For example, h-BN a layered material closest in structure to graphene, is an insulator, while NbSe, a transition metal dichalcogenide is metallic and monolayers of other transition metal di-chalcogenides such as MoS2 are direct band-gap semiconductors. The rich variety of properties that 2D layered material systems offer can potentially be engineered on-demand, and creates exciting prospects for their device and technological applications ranging from electronics, sensing, photonics, energy harvesting and flexible electronics in the near future.
Electrical transport of zig-zag and folded graphene nanoribbons
Authors: Elias Watheq , Elliott M. , Matthai C. C. 
Published: December 2013

ABSTRACTIn recent years, there has been much interest in modelling graphene nanoribbons as they have great potential for use in molecular electronics. We have employed the NEGF formalism to determine the conductivity of graphene nanoribbons in various configurations. The electronic structure calculations were performed within the framework of the Extended Huckel Approximation. Both zigzag and armchair nanoribbons have been considered. In addition, we have also computed the transmission and conductance using the non-equilibrium Greens function formalism for these structures. We also investigated the effect of defects by considering a zigzag nanoribbon with six carbon atoms removed. Finally, the effect of embedding boron nitride aromatic molecules in the nanoribbon has been considered. The results of our calculations are compared with that obtained from recent work carried out using tight-binding model Hamiltonians.
Long‐term changes in liana abundance and forest dynamics in undisturbed Amazonian forests
Authors: Laurance William F. , Andrade Ana S. , Magrach Ainhoa , Camargo José L. C. , Valsko Jefferson J. , Campbell Mason , Fearnside Philip M. , Edwards Will , Lovejoy Thomas E. , Laurance Susan G. 
Published: December 2013

Lianas (climbing woody vines) are important structural parasites of tropical trees and may be increasing in abundance in response to global‐change drivers. We assessed long‐term (∼14‐year) changes in liana abundance and forest dynamics within 36 1‐ha permanent plots spanning ∼600 km2 of undisturbed rainforest in central Amazonia. Within each plot, we counted each liana stem (≥2 cm diameter) and measured its diameter at 1.3 m height, and then used these data to estimate liana aboveground biomass. An initial liana survey was completed in 1997–1999 and then repeated in 2012, using identical methods.Liana abundance in the plots increased by an average of 1.00% ± 0.88% per year, leading to a highly significant (t = 6.58, df = 35, P < 0.00001) increase in liana stem numbers. Liana biomass rose more slowly over time (0.32% ± 1.37% per year) and the mean difference between the two sampling intervals was nonsignificant (t = 1.46, df = 35, P = 0.15; paired t tests). Liana size distributions shifted significantly (χ2 = 191, df = 8, P < 0.0001; Chi‐square test for independence) between censuses, mainly as a result of a nearly 40% increase in the number of smaller (2–3 cm diameter) lianas, suggesting that lianas recruited rapidly during the study.We used long‐term data on rainfall and forest dynamics from our study site to test hypotheses about potential drivers of change in liana communities. Lianas generally increase with rainfall seasonality, but we found no significant trends over time (1997–2012) in five rainfall parameters (total annual rainfall, dry‐season rainfall, wet‐season rainfall, number of very dry months, CV of monthly rainfall). However, rates of tree mortality and recruitment have increased significantly over time in our plots, and general linear mixed‐effect models suggested that lianas were more abundant at sites with higher tree mortality and flatter topography. Rising concentrations of atmospheric CO2, which may stimulate liana growth, might also have promoted liana increases.Our findings clearly support the view that lianas are increasing in abundance in old‐growth tropical forests, possibly in response to accelerating forest dynamics and rising CO2 concentrations. The aboveground biomass of trees was lowest in plots with abundant lianas, suggesting that lianas could reduce forest carbon storage and potentially alter forest dynamics if they continue to proliferate.
A New High-Efficiency Procedure for Aggregate Gradation Determination of the Railway Ballast by Means Image Recognition Method
Authors: Guerrieri M. , Parla G. 
Published: December 2013

Abstract The mechanical characteristics of the railway superstructure are related to the properties of the ballast, and especially to the particle size distribution of its grains. Under the constant stress-strain of carriages, the ballast can deteriorate over time, and consequently it should properly be monitored for safety reasons. The equipment which currently monitors the railway superstructure (like the Italian diagnostic train Archimede) do not make any “quantitative” evaluation of the ballast. The aim of this paper is therefore to propose a new methodology for extracting railway ballast particle size distribution by means of the image processing technique. The procedure has been tested on a regularly operating Italian railway line and the results have been compared with those obtained from laboratory experiments, thus assessing how effective is the methodology which could potentially be implemented also in diagnostic trains in the near future.
Research on a Laboratory Technique for Tire-Pavement Noise Assessment of Asphalt Mixes
Authors: Kowalski K.J. , Dare T. , McDaniel R.S. , Olek J. , Bernhard R. 
Published: December 2013

Abstract Communication noise is classified as one of the pollutions for the current environment. Experimental techniques to measure tire-pavement noise generation from asphalt pavements in the laboratory have been limited. A series of experiments were conducted on six different asphalt mixtures to determine if Purdue University’s Tire-Pavement Test Apparatus (TPTA) could be used to overcome these limitations. The procedure produced samples with low tire-pavement noise; however, the air void contents of the samples were higher than designed. Despite these difficulties, the sample preparation technique and the TPTA testing protocol were shown to offer an effective approach for quick laboratory assessment of tire-pavement noise characteristics of hot mix asphalt pavements at a substantially reduced cost compared to field testing.
Saint-simonisme et colonisation. La politique indigène du gouverneur Guillain en Nouvelle-Calédonie (1862-1870)
Authors: Reuillard Michel 
Published: December 2013

Nommé gouverneur de la Nouvelle-Calédonie en 1860 grâce à ses recommandations, Charles Guillain y conduit pendant huit ans (1862-1870) une expérience passionnée qui lui permet d'appliquer jusqu'à l'outrance ses convictions philosophiques et sociales saint- simoniennes. L'engagement de travailleurs indigènes dans les services administratifs ou chez les particuliers, la constitution d'une « phalange indigène » aux portes de Nouméa, l'enseignement primaire gratuit, laïc et obligatoire sont autant de mesures destinées à précipiter l'assimilation des indigènes dans la « Famille universelle ».
L'arrêté du 22 janvier 1868 crée la « réserve inaliénable et incommutable ». Il s'agit d'un côté de fixer la société traditionnelle et de la préserver de l'avance devenue inexorable de la colonisation ; par là on garantit les surfaces nécessaires à l'existence et au développement des populations, tout en les soustrayant à l'influence jugée rétrograde des missionnaires chrétiens. D. s'agit de l'autre côté de favoriser la fréquentation du monde occidental, l'apprentissage de ses techniques et de ses modes de gestion. A terme (un siècle ?), l'appropriation collective du sol cédera le pas à la propriété privée de type européen.
L'œuvre à accomplir est gigantesque, à hauteur des espoirs (des utopies ?) soulevés par les disciples d'Enfantin. C'est pourquoi — et le caractère autoritaire du gouverneur le souligne — aucune force centrifuge n'est tolérée. Les chefs insoumis, les révoltes locales sont réprimés avec la plus grande rigueur : Koumac, 1863 ; Gatope-Wagap, 1862-1869...
Flares in Rheumatoid Arthritis: Frequency and Management. A Report from the BRASS Registry
Authors: Bykerk Vivian P. , Shadick Nancy , Frits Michelle , Bingham Clifton O. , Jeffery Iain , Iannaccone Christine , Weinblatt Michael , Solomon Daniel H. 
Published: December 2013

Objective.To describe the frequency, duration, and management of flares as reported by patients with rheumatoid arthritis (RA).Methods.Data were collected in a prospective observational study of patients with RA recruited from a single academic center and treated according to the rheumatologists’ discretion. Every 6 months, patients reported the number and duration of RA flares and described how these were managed in terms of adding or changing medication and use of nonpharmacologic strategies.Results.Of patients who reported flares at least once during the study, 74% reported having flares 6 months prior to study entry and 59% reported flares prior to the first 6-month visit. At subsequent visits, 54–57% reported having > 1 flare. Thirty percent of patients in remission reported flares. Flare duration lasted ≥ 2 weeks in 30%, 1–2 weeks in 13%, and < 1 week in 57%. Forty percent reported medication changes at the time of their flare; 16% changed medication and used nonpharmacologic strategies and 26% of patients reported no changes in treatment as a result of flares. Longer duration of flare was associated with changes in disease-modifying therapy.Conclusion.Patients with RA experienced flares more often when noted to be in higher disease activity states than when in remission and reported changes in disease-modifying antirheumatic drugs or biologics more frequently when flares were of longer duration. There is a need to prospectively study symptom intensity and duration of flare in relation to disease activity and consider self-management strategies in the development of a measure of flare.
The Relationship Between Physical Activity Levels and Pain in Children with Juvenile Idiopathic Arthritis
Authors: Limenis Elizaveta , Grosbein Haddas A. , Feldman Brian M. 
Published: December 2013

Objective.Pain and reduced physical activity levels are common in children with juvenile idiopathic arthritis (JIA). Currently, there is no consensus about the role of physical activity in managing pain in JIA. The purpose of our study was to assess the relationship between physical activity level and pain in children ages 11 to 18 years with JIA.Methods.A random sample of 50 patients with JIA were approached by mailed questionnaires. Physical activity was determined using the Physical Activity Questionnaire (PAQ). Pain measures included the Numerical Rating Scale (pain severity), SUPER-KIDZ body diagram (number of painful areas), and the Child Activities Limitations Inventory-21 (pain interference). Generalized linear models were used to assess the relationship between physical activity and pain, as well as the roles of sex and age.Results.The response rate was 84%. Thirty-four respondents completed the questionnaire package. The median age was 15 years. The mean PAQ score was 2.16/5. Physical activity declines with increasing age in youth with JIA (r = 0.53, p = 0.0014). Lower physical activity is associated with greater pain interference (r = 0.39, p = 0.0217) and more severe pain (r = 0.35, p = 0.0422).Conclusion.Children with JIA report significantly less activity than healthy children based on PAQ scores, with physical activity declining throughout adolescence. Physical activity is inversely related to pain interference and severity in children with JIA. Our findings suggest that physical activity interventions may play an important role in the management of pain in JIA.
Probability, Objectivity, and Induction
Authors: Baise Arnold 
Published: December 2013

AbstractThe main purpose of this article is to use Ayn Rand's analysis of the meaning of objectivity to clarify the much-discussed question of whether probability is “objective” or “subjective.” This results in a classification of probability theories as frequentist, subjective Bayesian, or objective Bayesian. The work of objective Bayesian E. T. Jaynes is emphasized, and is used to provide a formal definition of probability. The relation between probability and induction is covered briefly, with probability theory presented as the basis of inductive inference.
Examining The Fountainhead
Authors: Seddon Fred 
Published: December 2013

Abstract
Robert Mayhew has edited a series of books featuring essays examining the novels of Ayn Rand. This book is the third in the series, and it is a highly recommended collection. Among the best essays are those written by Shoshana Milgram, Jeff Britting, Tore Boeckmann, and Mayhew. The book does, however, suffer from a few scholarly lapses.
Dynamiques de mobilité étudiante Sud-Nord : une approche par les pôles internationaux de formation de l’« élite » scientifique mexicaine
Authors: Gérard Étienne , Cornu Jean-François 
Published: December 2013

Cet article aborde la question des dynamiques de mobilité étudiante Sud-Nord en s’appuyant sur les trajectoires de formation de l’élite scientifique mexicaine du Système national des chercheurs (SNI), des années 1970 à 2000. Il explore les pôles étrangers de formation vers lesquels se sont dirigés les actuels chercheurs de ce système, les variations disciplinaires et temporelles de ces pôles, ainsi que les transformations caractéristiques de leur hiérarchie dans l’espace international de la formation. Il montre ainsi que la circulation des étudiants est très largement conditionnée par le degré d’attraction et de spécialisation des différents pôles internationaux de formation. L’analyse se concentre enfin sur l’hypothèse que les dynamiques de mobilité étudiantes sont le produit conjoint de la division internationale du marché de la formation, de réseaux scientifiques et de « chaînes de savoirs » entre communautés scientifiques et institutions de formation mexicaines et étrangères et enfin d’un processus de légitimation, au Mexique et à l’étranger, des savoirs et pôles de formation.
Comportement du dirigeant et décision de divulgation volontaire d’informations : cas du marché tunisien
Authors: Diouani Boutheina , Khlif Wafa 
Published: December 2013

En mettant en avant la centralité du dirigeant, surtout dans les pays émergents, cet article propose de mobiliser la théorie du comportement planifié pour comprendre la décision de divulgation volontaire. L’enquête a croisé les facteurs psychosociaux et l’intention de communication de 70,9 % des dirigeants des entreprises cotées sur la bourse de Tunis. Les résultats montrent que l’offre volontaire d’informations dépend des libres choix du dirigeant et de son attitude; que la variable sociale n’a pas d’influence sur son intention de communiquer et enfin que sa perception du contrôle peut, selon la nature de l’information à communiquer, influencer sa décision.
Valeurs confucéennes en Chine mesurées par les valeurs personnelles et domaines motivationnels de Schwartz
Authors: Schaaper Johannes , Jiao Zhen 
Published: December 2013

Cette recherche identifie les valeurs culturelles confucéennes chinoises par le biais des 45 valeurs personnelles du Schwartz Value Survey. L'enquête empirique se fonde sur six entretiens qualitatifs et une administration de 1674 questionnaires en Chine. Les 45 valeurs personnelles chinoises se positionnent correctement selon la structure théorique de Schwartz. Les valeurs dominantes en Chine sont de nature confucéenne et collectiviste. Puis, les femmes sont davantage confucéennes que les hommes. Enfin, la jeune génération adhère de plus en plus aux valeurs occidentales et individualistes. Au niveau des implications managériales, nous donnons des recommandations en marketing et GRH en Chine.
Apprendre malgré l’échec : le cas d’une inéligibilité à la labellisation « pôle de compétitivité »
Authors: Charreire Petit Sandra , Cusin Julien , Loubaresse Elodie 
Published: December 2013

Cet article étudie, dans le contexte français de la politique des pôles de compétitivité (logique de cluster), la tentative avortée de création d’un pôle sur le vin à Bordeaux. L’échec est ici analysé comme un inhibiteur versus un déclencheur de l’apprentissage. Peu de travaux abordent ce point dans le champ des clusters industriels, où l’accent est davantage mis sur les succès, tant en théorie qu’en pratique. En dépassant la vision binaire de l’échec, nous proposons une troisième voie, celle d’une dynamique qui se crée malgré l’échec, sans remise en cause des contours du projet. Ceci nous permet de mettre en évidence les conditions d’occurrence d’un tel apprentissage.
Le « management au féminin » : Entre stéréotypes et ambigüités
Authors: Pigeyre Frédérique , Vernazobres Philippe 
Published: December 2013

Cet article questionne de manière critique les discours sur le management au féminin. Pour saisir les représentations des professionnels, une analyse de trois ouvrages sur le sujet et d’entretiens semi-directifs de managers d’un grand cabinet de conseil en management sont confrontés à la littérature académique. Leurs discours sont struturés en deux axes : la naturalisation des différences hommes/femmes et l’affirmation de l’avènement d’un nouveau type de management plus féminin. Ces discours constituent une opportunité de promotion de la diversité et de pratiques managériales renouvelées, mais risquent également de renforcer les clivages hommes/femmes, au détriment de celles-ci.
“Estrangeirismo” and flexibility: intercultural learning in Brazilian MNCs
Authors: Bartel-Radic Anne 
Published: December 2013

How do Multinational Companies (MNC) learn to adapt to foreign markets and cultural differences ? We examine seven qualitative case studies of Brazilian MNCs which show that international experience and intercultural interaction, supported by geocentric international human resource strategies, are key factors in the organizational development of intercultural competence. Brazil appears to be a particularly interesting case, as certain characteristics of Brazilian culture, such as “estrangeirismo” and flexibility, seem to foster the development of intercultural competence.