cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
High-Field Conduction in Barium Titanate
Creators: name: Scott, J. F.
name: Morrison, F. D.
name: Zubko, P.
name: Jung, D. J.
name: Baxter, P.
name: Saad, M. M.
name: Gregg, J. M.
name: Bowman, R. M.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We present current-voltage studies of very thin (ca. 77 nm) barium titanate single crystals up to 1.3 GV/m applied field. These show that the mechanism of leakage current at high fields is that of space charge limited conduction (SCLC) in a regime with a continuous distribution of traps, according to the original model of Rose [Phys. Rev. 97, 1537 (1955)]. This study represents a factor of x5 in field compared with the early studies of BaTiO3 conduction [A. Branwood et al., Proc. Phys. Soc. London 79, 1161 (1962)]. Comparison is also given with ceramic multilayer barium titanate capacitors, which show similar SCLC behaviour. The data are shown to be completely incompatible with variable range hopping [B. I. Shklovskii, Sov. Phys. Semicond. 6, 1964 (1973)], despite the recent report of such mechanism in SrTiO3 films [D. Fuchs, M. Adam, and R. Schneider, J. Phys. IV France 11, 71 (2001)].
EFFECTS OF GIBBERELLIC ACID (GA,) ON GROWTH AND YIELD OF LEEK (ALLIUM PORRUM L.)
Creators: name: Morales-Payán, José Pablo
name: Morales-Payán, José Pablo
Publisher: name: Unknown
Year: 1994
Subjects: Crop Production/Industries
Research and Development/Tech Change/Emerging Technologies

description: An experiment was conducted to determine the effects of gibberellic acid (GA3) on growth and yield of "American Flag" leek (Allium porrum L.) grown in containers. It was found that GA3 foliar application in dosages ranging from 0 (control) to 50 ppm did not cause significant effects on growth or yield when applied seven days after transplant (four-leaf stage). However, GA3 application 21 days after transplanting (seven-leaf stage) significantly increased leaf area as well as pseudo-stem weight and diameter at rates 30, 40 and 50 ppm, although no significant effects were detected on plant height and pseudo-stem length. These results suggest that yield and quality of "American Flag" leek can be enhanced by GA3 application in the seven-leaf stage.
The one-dimensional t-J model coupled to adiabatic phonons: A numerical investigation
Creators: name: Bissola, Samuele
name: Parola, Alberto
Publisher: name: arXiv
Year: 2004
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: The ground state of the one-dimensional t-J model coupled with phonons in the adiabatic limit is numerically investigated by use of the Lanczos technique at quarter filling. Due to the interplay between the electron-electron Coulomb repulsion and electron-phonon interaction, this model shows a sequence of lattice distortions leading to the formation of charge-density-waves and bond-order-waves. Moderate electron-electron and electron-lattice coupling may lead to coexistence of dimerization and tetramerization in the distortion pattern. Dimerization leads to the formation of an "antiferromagnetic" Mott insulator, while tetramerization gives rise to a spin-Peierls phase. By increasing the super-exchange coupling, antiferromagnetism is inhibited due to the change of the distortion periodicity.
La moneta e il credito negli studi e nelle attività di Giannino Parravicini (Money and Credit in the studies and activities of Giannino Parravicini)
Creators: name: Sarcinelli, Mario
Publisher: name: Moneta e Credito
Year: 2013
Subjects: subject: Parravicini, money, credit
subject: B31, E51, G18

description: The work summarises the views on money and credit held by Giannino Parravicini, notable Italian banker and civil servant. Through a review of Parravicini's main works, the author draws a comparison between the problems of regulating the supply of credit in post-war Italy and in the contemporary European environment. JEL Codes: B31, E51, G18
description: Moneta e Credito, V. 66, N. 264 (2013)
Characterizing networks of propaganda on Twitter: a case study
Creators: name: Guarino, Stefano
name: Trino, Noemi
name: Celestini, Alessandro
name: Chessa, Alessandro
name: Riotta, Gianni
Publisher: name: arXiv
Year: 2020
Subjects: subject: Social and Information Networks (cs.SI)
subject: FOS: Computer and information sciences

description: The daily exposure of social media users to propaganda and disinformation campaigns has reinvigorated the need to investigate the local and global patterns of diffusion of different (mis)information content on social media. Echo chambers and influencers are often deemed responsible of both the polarization of users in online social networks and the success of propaganda and disinformation campaigns. This article adopts a data-driven approach to investigate the structuration of communities and propaganda networks on Twitter in order to assess the correctness of these imputations. In particular, the work aims at characterizing networks of propaganda extracted from a Twitter dataset by combining the information gained by three different classification approaches, focused respectively on (i) using Tweets content to infer the "polarization" of users around a specific topic, (ii) identifying users having an active role in the diffusion of different propaganda and disinformation items, and (iii) analyzing social ties to identify topological clusters and users playing a "central" role in the network. The work identifies highly partisan community structures along political alignments; furthermore, centrality metrics proved to be very informative to detect the most active users in the network and to distinguish users playing different roles; finally, polarization and clustering structure of the retweet graphs provided useful insights about relevant properties of users exposure, interactions, and participation to different propaganda items.
Engineering Topological Phases Guided by Statistical and Machine Learning Methods
Creators: name: Mertz, Thomas
name: Valentí, Roser
Publisher: name: arXiv
Year: 2020
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Computational Physics (physics.comp-ph)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The search for materials with topological properties is an ongoing effort. In this article we propose a systematic statistical method supported by machine learning techniques that is capable of constructing topological models for a generic lattice without prior knowledge of the phase diagram. By sampling tight-binding parameter vectors from a random distribution we obtain data sets that we label with the corresponding topological index. This labeled data is then analyzed to extract those parameters most relevant for the topological classification and to find their most likely values. We find that the marginal distributions of the parameters already define a topological model. Additional information is hidden in correlations between parameters. Here we present as a proof of concept the prediction of the Haldane model as the prototypical topological insulator for the honeycomb lattice in Altland-Zirnbauer (AZ) class A. The algorithm is straightforwardly applicable to any other AZ class or lattice and could be generalized to interacting systems.
$\textit{Ab Initio}$ Theory of the Impact from Grain Boundaries and Substitutional Defects on Superconducting Nb$_3$Sn
Creators: name: Kelley, Michelle M.
name: Sitaraman, Nathan S.
name: Arias, Tomás A.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Superconductivity (cond-mat.supr-con)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences

description: Grain boundaries play a critical role in applications of superconducting Nb$_3$Sn: in dc applications, grain boundaries preserve the material's inherently high critical current density by pinning flux, while in ac applications grain boundaries can provide weak points for flux entry and lead to significant dissipation. We present the first $\textit{ab initio}$ study to investigate the physics of different boundary types in Nb$_3$Sn using density functional theory. We identify an energetically favorable selection of tilt and twist grain boundaries of distinct orientations. We find that clean grain boundaries free of point defects reduce the Fermi-level density of states by a factor of two, an effect that decays back to the bulk electronic structure $\sim1-1.5$ nm from the boundary. We further calculate the binding free-energies of tin substitutional defects to multiple boundaries, finding a strong electronic interaction that extends to a distance comparable to that of the reduction of density of states. Associated with this interaction, we discover a universal trend in defect electronic entropies near a boundary. We probe the effects of defect segregation on grain boundary electronic structure and calculate the impact of substitutional impurities on the Fermi-level density of states in the vicinity of a grain boundary, finding that titanium and tantalum have little impact regardless of placement, whereas tin, copper, and niobium defects each have a significant impact but only on sites away from the boundary core. Finally, we consider how all of these effects impact the local superconducting transition temperature $T_\textrm{c}$ as a function of distance from the boundary plane.
description: 8 pages, 6 figures
Universality of the edge tunneling exponent of fractional quantum Hall liquids
Creators: name: Wan, Xin
name: Evers, F.
name: Rezayi, E. H.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Recent calculations of the edge tunneling exponents in quantum Hall states appear to contradict their topological nature. We revisit this issue and find no fundamental discrepancies. In a microscopic model of fractional quantum Hall liquids with electron-electron interaction and confinement, we calculate the edge Green's function via exact diagonalization. Our results for $ν= 1/3$ and 2/3 suggest that in the presence of Coulomb interaction, the sharpness of the edge and the strength of the edge confining potential, which can lead to edge reconstruction, are the parameters that are relevant to the universality of the electron tunneling I-V exponent.
description: 5 pages, 3 figures
title: Tacit Knowledge in Learning to Teach: What are the Possibilities for Student Teachers?
Creators: name: Warren-Lee, Nicola
Publisher: name: The Open University
Year: 2017

description: This study focuses on a particular type of knowledge which is referred to throughout as tacit knowledge and has been identified as a personal form of knowledge, which plays a key role in the practice and professional development of teachers. In the context of initial teacher education tacit knowledge is important to consider as what student teachers are learning and how they are learning it is of current, pressing concern to initial teacher education in England. The role of and access to tacit knowledge in student teacher learning were investigated using a case study approach employing stimulated recall interviews wherein mentors were asked to reflect upon their teaching and explain their teaching actions. Stimulated recall interviews involved student teachers taking on the role of interviewer. Thematic analysis of data revealed that student teachers probed key teaching episodes and encouraged mentors to reveal complex decision making which may otherwise have remained undisclosed. Main findings show that both student teachers and experienced teachers see tacit knowledge as useful in the learning to teach process. Interviews reveal that observable teaching actions had complex underlying reasoning and this was elicited via objective-led dialogue between student teacher and mentor, post-teaching. Student teachers were able to independently select teaching events to examine further, and were able to understand their mentor’s actions and judgements more deeply as a result of stimulated recall interviewing. The implications arising out of this study include a need for change to observation and debriefing practices in school, with student teachers and mentors becoming more aware of the value and purpose of tacit knowledge. The benefits of student teachers being instrumental in initiating and asking questions which can elicit experienced teachers’ tacit knowledge are clear; and findings show the potential for student teachers to become more pivotal in their own learning. Where stimulated recall interviews were used mentors were encouraged to reveal embedded reasoning underpinning their classroom practice.
Τεχνικαί μελέται Β' Αι αρχικαί τάσεις και το θεώρημα των δυνατών έργων
Creators: name: (:Unkn) Unknown
Publisher: name: Εκ του τυπογραφείου Π. Α. Πετράκου
Year: 2024
Subjects: Mechanics, Applied

description: 31 σ.
L’agro-écologie peut-elle se passer des normes ? Commentaire à partir du rapport INRA/CGSP
Creators: name: Le Goffe, Philippe
name: Le Goffe, Philippe
Publisher: name: Unknown
Year: 2014
Subjects: subject: Environmental Economics and Policy
subject: Agro-écologie agriculture environnement économie politique environnementale innovation approches volontaires

description: En s’appuyant sur le rapport INRA/CGSP, l’article interroge la complémentarité entre performances économiques et environnementales en agriculture conventionnelle, dans l’objectif de savoir si un développement volontaire de l’agro-écologie est envisageable ou pas. L’analyse du rapport montre que les performances économiques et environnementales sont antagonistes pour un premier groupe de pratiques agricoles à effet environnemental fort. La « double performance » est affirmée dans le rapport pour un deuxième groupe de pratiques, mais sans preuves suffisantes. Par ailleurs, l’analyse de la littérature économique indique que l’innovation environnementale est induite par les signaux de prix et de rareté créés par la politique environnementale. L’article conclut que le développement de l’agro-écologie ne peut reposer sur une démarche volontaire.
A soil-quality index for soil from Mediterranean forests
Creators: name: GARCIA MOROTE, FRANCISCO ANTONIO
Publisher: name: figshare
Year: 2024
Subjects: classificationCode: 300703
subject: Forest ecosystems

description: Treatments involving vegetation thinning have become more frequent in Mediterraneanforest ecosystems. Under extreme climate conditions, this practice can affectthe balance between physicochemical, microbiological and biochemical soil properties,modifying the soil quality and the ability of these forest ecosystems to regenerate.The aim of this study was to use principal component analysis (PCA) todevelop a multivariable soil-quality index (SQI) applicable to the Mediterraneanforest ecosystems of the Cuenca mountain range in central-eastern Spain. Toachieve this, seven physicochemical properties (moisture, pH, electrical conductivity,carbonate, total organic carbon, total nitrogen and available phosphorus) andsix microbiological properties (basal respiration and microbial biomass carbon, aswell as the activity of dehydrogenase, urease, phosphatase and β-glucosidaseenzymes) were measured seasonally between 2011 and 2012. Soil samples wereobtained from seven unmanaged and undisturbed forest areas and these data wereused to create the SQI. Subsequently, we applied this SQI to soil samples fromother forests in the Cuenca mountain range, which had been affected by differentthinning treatments. Our analysis showed that the greater was the canopy presentin these treated forests, the larger were the average values for all 13 variables. Thesmallest SQI values were in areas that had been intensively thinned. Therefore, ourresults suggest that this SQI is an important tool for the development of appropriatemeasures to maintain the quality of forest soil in Spanish Mediterranean forest ecosystems.
Le morcellement des exploitations agricoles françaises en 2007
Creators: name: Piet, Laurent
name: Cariou, Sylvain
name: Piet, Laurent
name: Cariou, Sylvain
Publisher: name: Unknown
Year: 2013
Subjects: subject: Farm Management
subject: Land Economics/Use
subject: ragmentation farms cartographic field-pattern registry

description: [Paper in French] We draw up a picture of farmland fragmentation in 2007 for France thanks to the use of the cartographic field pattern registry database. The reported indicators quantify the degree of fragmentation in its various dimensions (number, shape, size, distance and scattering of plots) as well as in an overall way. Data also enable to explore the links between fragmentation and structural characteristics of the farms, such as legal status, operator’s age, type of farming or geographical location
Fluid AOP : task-specific modularity
Creators: name: Hon, Terry
Publisher: name: University of British Columbia
Year: 2011

description: Most aspect-oriented programming technology used today uses a linguistic approach that enables programmers to write modular crosscutting code. Two limitations of these approaches are that there is only one decomposition present for a code-base and that they require developers to adopt a new (or extended) programming language. We propose fluid AOP to modularize crosscutting concerns without these limitations. Fluid AOP provides mechanisms in the IDE for creating constructs that localize a software developer's interaction for a specific task. These constructs act as fluid aspects of the system. They are editable representations of the subset of the code-base that the developer needs to interact with to perform a task. We present three fluid AOP prototypes and provide comparisons between them; as well as comparisons between the fluid AOP, linguistic AOP, and non AOP approaches.
Incidences économiques des zones humides pour les exploitations : le cas du Limousin
Creators: name: Minviel, Jean Joseph
name: Dupraz, Pierre
name: Latruffe, Laure
name: Minviel, Jean Joseph
name: Dupraz, Pierre
name: Latruffe, Laure
Publisher: name: Unknown
Year: 2013
Subjects: subject: Farm Management
subject: Land Economics/Use
subject: zones humides profit agricole subventions Limousin

description: Cet article examine les incidences économiques des milieux humides pour des exploitations agricoles situées dans la région du Limousin. Nous utilisons des données d’enquête de 2009 et des données comptables de 2007 à 2009, fournies par la Chambre d’Agriculture de la Haute-Vienne. Nous élaborons un modèle microéconomique du comportement des agriculteurs qui est ensuite spécifié économétriquement puis estimé par les doubles moindres carrés. Les résultats montrent que le profit des exploitations diminue avec le pourcentage de terres en zones humides. Une gestion durable de ces milieux par les agriculteurs est ainsi possible moyennant une compensation (par des subventions) de la perte de profit due à leur préservation.
Causal Modeling of Twitter Activity During COVID-19
Creators: name: Gencoglu, Oguzhan
name: Gruber, Mathias
Publisher: name: arXiv
Year: 2020
Subjects: subject: Social and Information Networks (cs.SI)
subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: Understanding the characteristics of public attention and sentiment is an essential prerequisite for appropriate crisis management during adverse health events. This is even more crucial during a pandemic such as COVID-19, as primary responsibility of risk management is not centralized to a single institution, but distributed across society. While numerous studies utilize Twitter data in descriptive or predictive context during COVID-19 pandemic, causal modeling of public attention has not been investigated. In this study, we propose a causal inference approach to discover and quantify causal relationships between pandemic characteristics (e.g. number of infections and deaths) and Twitter activity as well as public sentiment. Our results show that the proposed method can successfully capture the epidemiological domain knowledge and identify variables that affect public attention and sentiment. We believe our work contributes to the field of infodemiology by distinguishing events that correlate with public attention from events that cause public attention.
description: 13 pages, 3 figures
Impact du taux de change sur la sécurité alimentaire des pays en développement
Creators: name: Huchet Bourdon, Marilyne
name: Laroche Dupraz, Catherine
name: Sénadin, Anned-Linz
name: Huchet Bourdon, Marilyne
name: Laroche Dupraz, Catherine
name: Sénadin, Anned-Linz
Publisher: name: Unknown
Year: 2013
Subjects: subject: International Relations/Trade
subject: taux de change sécurité alimentaire indice de Bonilla Pays en développement

description: L’épisode de hausse de prix des produits agricoles sur la période 2006-2008 a remis au coeur des préoccupations internationales la question de la sécurité alimentaire mondiale. Dans ce contexte, les Pays les Moins Avancés sont passés, depuis le début des années 1990, d’une situation d’exportateurs nets à celle d’importateurs nets de produits agricoles. Par ailleurs, ces dernières années ont aussi été marquées par de vifs débats sur les taux de change, comme en témoigne la querelle des monnaies Yuan/dollar. Dans la lignée de la littérature sur la relation entre le taux de change et le commerce, l’objectif de cet article est d’évaluer la relation entre le taux de change et la sécurité alimentaire sur la période 1995-2010 sur un échantillon de 24 à 72 pays en développement. En outre, l’article propose un cadre théorique visant à mettre en évidence les liens économiques entre la sécurité alimentaire, mesurée par l’indicateur de Bonilla, la valeur des monnaies des pays et les termes de l’échange international. Cette analyse théorique suggère qu’une dépréciation de la monnaie nationale se traduit à court terme par une détérioration de la sécurité alimentaire au sens de Bonilla en raison du renchérissement des importations alimentaires et de la diminution des recettes d’exportations et une relation à long terme dépendant des élasticités-prix de la demande d’importations alimentaires, de l’offre d’exportations totales et du rapport entre les prix alimentaires importés et les prix des autres produits importés. Enfin, les deux études de cas proposées (l’une portant sur la Gambie, l’autre sur la Côté d’Ivoire) suggèrent que le taux de change n’est pas le seul déterminant de l’insécurité alimentaire. D’autres variables telles que les investissements, le niveau des droits de douane, les termes de l’échange, l’offre de monnaie et la stabilité politique influencent le niveau de sécurité alimentaire.
Positivity bounds on reconstructed Horndeski models
Creators: name: Kennedy, Joe
name: Lombriser, Lucas
Publisher: name: arXiv
Year: 2020
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Positivity bounds provide conditions that a consistent UV-completion exists for a quantum field theory. We examine their application to Horndeski gravity models reconstructed from the effective field theory (EFT) of dark energy. This enables us to assess whether particular phenomenological parameterizations of the EFT functions reconstruct theories that respect or violate the positivity bounds. We find that commonly adopted EFT parametrizations, cast in terms of the dark energy density or power laws of the scale factor, only satisfy the positivity bounds in non-trivial regions of the parameter space. We then examine parameterizations of the inherently stable EFT basis, constructed to avoid gradient and ghost instabilities by default. In stark contrast, in this basis the positivity bounds either only provide constraints in a-priori unrealistic regions of the parameter space or do not provide any constraints on parameter values at all. The application of positivity bounds to common parametrizations of the standard EFT functions can therefore lead to artificial conclusions that the region of viable Horndeski modifications of gravity is highly constrained. Our results provide a strong motivation, in addition to the default avoidance of theoretical instabilities, for instead adopting parametrizations of the inherently stable EFT basis when testing dark energy and modified gravity models with forthcoming cosmological survey data.
description: 11 pages, 3 figures
Introduzione: l’Unione Europea è “mammona” (Introduction: A Pansy European Union)
Creators: name: D'Ippoliti, Carlo
Publisher: name: Moneta e Credito
Year: 2013
Subjects: subject: crisis, Euro, international reserve currency
subject: F34, H12, E12

description: The article introduces the new issue of the journal, reviewing the contributions included therein, and placing them in context. The author discusses the recent trends in European economic policy, with specific focus on its neglected international and global spillovers. JEL Codes: F34, H12, E12
description: Moneta e Credito, V. 66, N. 264 (2013)
Nodal solitons and the nonlinear breaking of discrete symmetry
Creators: name: Ferrando, A.
name: Zacares, M.
name: Andres, P.
name: de Cordoba, P. Fernandez
name: Monsoriu, J. A.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Pattern Formation and Solitons (nlin.PS)
subject: FOS: Physical sciences

description: We present a new type of soliton solutions in nonlinear photonic systems with discrete point-symmetry. These solitons have their origin in a novel mechanism of breaking of discrete symmetry by the presence of nonlinearities. These so-called nodal solitons are characterized by nodal lines determined by the discrete symmetry of the system. Our physical realization of such a system is a 2D nonlinear photonic crystal fiber owning C6v symmetry.
description: 4 pages, 4 figures;minor changes in the text
Generic Detectability and Isolability of Topology Failures in Networked Linear Systems
Creators: name: Zhang, Yuan
name: Xia, Yuanqing
name: Zhang, Jinhui
name: Shang, Jun
Publisher: name: arXiv
Year: 2020
Subjects: subject: Systems and Control (eess.SY)
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: This paper studies the possibility of detecting and isolating topology failures (including link failures and node failures) of a networked system from subsystem measurements, in which subsystems are of fixed high-order linear dynamics, and the exact interaction weights among them are unknown. We prove that in such class of networked systems with the same network topologies, the detectability and isolability of a given topology failure (set) are generic properties, indicating that it is the network topology that dominates the property of being detectable or isolable for a failure (set). We first give algebraic conditions for detectability and isolability of arbitrary parameter perturbations for a lumped plant, and then derive graph-theoretical necessary and sufficient conditions for generic detectability and isolability of topology failures for the networked systems. On the basis of these results, we consider the problems of deploying the smallest set of sensors for generic detectability and isolability. We reduce the associated sensor placement problems to the hitting set problems, which can be effectively solved by greedy algorithms with guaranteed approximation performances.
description: 12 pages, 8 figures, to appear in IEEE Transactions on Control of Network Systems
K.Israfilzade.pdf
Creators: name: Israfilzade, Khalil
Publisher: name: figshare
Year: 2020
Subjects: subject: 159999 Commerce, Management, Tourism and Services not elsewhere classified
subject: FOS: Economics and business
subject: 150501 Consumer-Oriented Product or Service Development
subject: 150304 Entrepreneurship
subject: 150503 Marketing Management (incl. Strategy and Customer Relations)

description: According todays tendency, we can assume that numerous e-commerce retailers prefer to use drop-shipping to satisfy demand. Retailers simply forward clients’ orders to provider who sends the order straight to the clients, which all expenses was paid in advance. Aim of the paper is to outline pros and cons of drop-shipping in the new century. Consequently, in descriptive literature analyse, pros and cons of drop-shipping were studied, main aspects were likened in order to come up with conclusion of drop-shipping.
Depression, Anxiety and Stress among the Undergraduate Students of Pokhara Metropolitan, Nepal
Creators: name: Shishir Paudel
name: Himlal Gautam
name: Chiranjivi Adhikari
name: Dipendra Kumar Yadav
Publisher: name: figshare
Year: 2020
Subjects: subject: 111799 Public Health and Health Services not elsewhere classified
subject: FOS: Health sciences
subject: 111706 Epidemiology

description: The university period is taken as a risk period for the onset of several mental disorders as this period is stressful and most of the lifetime mental disorders start typically during this young age. The present study aimed to assess the prevalence and risk factors associated with depression, anxiety, and stress among undergraduates residing at Pokhara Metropolitan, Nepal. Methods: A cross-sectional study was conducted among 681 undergraduates from different academic institutions of Pokhara Metropolitan using DASS-21 to assess the level of depression, anxiety, and stress. Results: The overall prevalence of depression, anxiety, and stress among the participants was found to be 38.2%, 46.9%, and 24.1% respectively. The level of depression and stress was not associated with the academic discipline but the higher prevalence was noted among the students from the non-technical group. The major risk factors associated with depression, anxiety and stress were parental education, family history of psychiatric disorders, self-esteem, and academic performance. Conclusions: The prevalence of mental disorders is high among the undergraduates. Further assessment of these disorders targeting students from different academic disciplines is recommended.
Le changement d’affectation des sols induit par la consommation européenne de biodiesel : une analyse de sensibilité aux évolutions des rendements agricoles
Creators: name: Gohin, Alexandre
name: Gohin, Alexandre
Publisher: name: Unknown
Year: 2013
Subjects: subject: Crop Production/Industries
subject: Land Economics/Use
subject: Biofuel Europe Land use changes

description: [Paper in French] The European public policy in favor of the biodiesel consumption is highly debated. Available estimates of the induced land use changes conclude that this policy is inefficient to reduce emissions of GreenHouse Gas. We show that the crop yield evolutions in these estimates are significantly lower than the observed and expected evolutions. This difference is directly related to biased calibration choice of behavioral parameters. We show using the GTAP-BIO framework that a consistent calibration of these parameters leads to a strong reduction (by around 80% in the long run) of the land use changes and induced emissions.
Mezzogiorno e Mercato unico europeo: complementarità o conflitto di obiettivi?
Creators: name: SARCINELLI, M.
Publisher: name: Moneta e Credito
Year: 2013
Subjects: subject: Mezzogiorno, regional development, European monetary union, labour
subject: F15, O52, J40

description: Il Mezzogiorno è la regione meno prospera d'Italia , situata nel sud del paese . Gli obiettivi di un mercato integrato e potenziale unione monetaria in Europa possono entrare in conflitto con gli obiettivi dello sviluppo regionale perché le aree sottosviluppate richiedono il supporto che il libero mercato possono precludere . Questo articolo esamina la storia del Mezzogiorno , la natura del mercato del lavoro nella regione , e la ricerca di una combinazione di politiche ottimali nel periodo fino al 1992 . The Mezzogiorno is the less prosperous region of Italy, located in the south of the country. The aims of an integrated market and potential monetary union in Europe may conflict with the aims of regional development because underdeveloped areas require support that free markets may preclude. This article examines the history of the Mezzogiorno, the nature of the labour market in the region, and the search for an optimum policy mix in the run up to 1992. JEL: F15, O52, J40
description: Moneta e Credito, V. 42, N. 166 (1989)
Una nota sulla valutazione dei disavanzi pubblici: al netto o al lordo degli interessi?
Creators: name: PASINETTI, L.
Publisher: name: Moneta e Credito
Year: 2013
Subjects: subject: Budget deficits, interest payments, national debt stabilisation
subject: H62, H63

description: Nella presente nota , l' autore sostiene che il riferimento a un deficit di bilancio che esclude i pagamenti di interessi , mentre è giustificato in certi contesti , non è giustificata in altri. In effetti, può indurre all'errore o distorcere le conclusioni quando viene utilizzato per discutere gli obiettivi di politica economica , e in particolare, lo scopo di stabilizzare la dimensione del debito nazionale. La nota si conclude proponendo una regola molto semplice per il calcolo del deficit di bilancio al massimo compatibile con un debito nazionale stabile In the present note, the author argues that reference to a budget deficit that excludes interest payments, while justified in certain contexts, is not justified in others. Indeed, it may induce incorrect or distorting conclusions when used to discuss the objectives of economic policy, and in particular the aim of stabilising the size of the national debt. The note concludes by proposing a very simple rule for the calculation of the maximum budget deficit compatible with a stable national debt. JEL: H62, H63
description: Moneta e Credito, V. 42, N. 166 (1989)
Fisher information, Wehrl entropy, and Landau Diamagnetism
Creators: name: Curilef, S.
name: Pennini, F.
name: Plastino, A.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: Using information theoretic quantities like the Wehrl entropy and Fisher's information measure we study the thermodynamics of the problem leading to Landau's diamagnetism, namely, a free spinless electron in a uniform magnetic field. It is shown that such a problem can be "translated" into that of the thermal harmonic oscillator. We discover a new Fisher-uncertainty relation, derived via the Cramer-Rao inequality, that involves phase space localization and energy fluctuations.
description: no figures. Physical Review B (2005) in press
title: Investigating the Role of the Inhibitor of Apoptosis Proteins (IAPs) in Metastasis Formation
Creators: name: Majorini, Maria Teresa
Publisher: name: The Open University
Year: 2018

description: Inhibitor of apoptosis proteins (IAPs) constitute a conserved family of molecules, which regulate both apoptosis and receptor signalling. They are often deregulated in cancer cells and represent potential targets for therapy. In my work, I investigated the effect of IAP inhibition in vivo to identify novel down-stream genes expressed in an IAP-dependent manner that could contribute to cancer aggressiveness. To this end, immunocompromised mice engrafted subcutaneously with the triple negative breast cancer (TNBC) cell line MDA-MB231 were treated with SM83, a Smac mimetic developed in our laboratory that acts as a pan-IAP inhibitor, and tumour nodules were profiled for gene expression. The analysis revealed that the inhibition of IAPs significantly reduces the expression of SNAI2, a zinc finger transcriptional repressor often associated with cancer aggressiveness, resistance to therapy and metastatic potential, especially in breast cancer. By testing several TNBC cell lines, I found that SNAI2 levels is promoted specifically by cellular IAP1 (cIAP1), and not by other IAPs, and that SM83-dependent down-regulation of SNAI2 reduces cancer cell motility. Accordingly, cIAP1 depletion blocks epidermal growth factor receptor (EGFR)-dependent activation of the mitogen-activated protein kinase (MAPK) pathway causing the reduction of SNAI2 transcription levels. The inhibition of EGFR signalling stems from the block of receptor signalling and from the down-regulation of its levels, but paradoxically the silencing of cIAP1 promotes EGFR stability rather than its degradation. Nonetheless, EGFR levels decrease upon cIAP1 silencing due to reduced NF-kB-dependent gene expression supporting the notion that cIAP1 controls EGFR in an opposite fashion, promoting its gene expression while causing its degradation. In conclusion, my work indicates that IAP-targeted therapy could contribute to EGFR inhibition and to the reduction of its down-stream mediators. This approach could be particularly effective in tumours characterized by high levels of EGFR and SNAI2, such as TNBCs.
Stem CO2 Efflux as an Indicator of Forests’ Productivity in Relict JuniperWoodlands (Juniperus thurifera L.) ofSouthern Spain
Creators: name: GARCIA MOROTE, FRANCISCO ANTONIO
Publisher: name: figshare
Year: 2024
Subjects: classificationCode: 300703
subject: Forest ecosystems

description: There are considerable uncertainties about the C cycle in semi-arid ecosystems. Hence,studies that have focused on Juniperus in Mediterranean woodlands are non-existent. This studyprovides a survey of the effect of the juniper woodland type (young and mature woodlands; jointeffect of maturity and forest productivity) on stem respiration. We checked the seasonal variationof stem respiration, evaluating the effects of stem temperature on stem CO2 efflux. For this, wemeasured the stem CO2 efflux (?mol CO2 m􀀀2 s􀀀1) over the four seasons on 16 junipers usingLI-6400 equipment. The results showed that in the more productive site (young woodland), the stemCO2 efflux was higher. This variable followed a clear seasonal trend, being higher during the springand progressively decreasing in cold periods. In both juniper woodlands, and especially in the olderforests, the Q10 coefficients were low (<2), typical of cold forests and slow-growing species. Theexponential model also confirmed that the Q10 was significantly higher in young juniper trees. Thus,stem CO2 efflux was an indicator of the growth in this juniper woodland that is well adapted to asemi-arid climate.
Gli effetti della politica monetaria sul settore reale: che cosa ne sappiamo?
Creators: name: CHOURAQUI, J.C.
name: DRISCOLL, M.J.
name: STRAUSS-KHAN, M.
Publisher: name: Moneta e Credito
Year: 2013
Subjects: subject: Monetary policy, neo-Keynesian, monetarist, new classical economists, real sector
subject: E52, E12, E13

description: JEL: E52, E12, E13
description: Moneta e Credito, V. 42, N. 166 (1989)
Muon Anomalous Magnetic Moment in Two Higgs Doublet Models with Vector-Like Leptons
Creators: name: Frank, Mariana
name: Saha, Ipsita
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We show that inclusion of a single generation of vector-like leptons in the Two-Higgs Doublet Models significantly enlarges the allowed parameter space consistent with the muon anomalous magnetic moment, as well as with other theoretical and experimental constraints. While previously $(g -2)_μ$ could only be resolved in Type-X scenario by requiring a light pseudoscalar Higgs boson and large $\tan β$, contributions of vector-like leptons via two-loop Barr Zee diagrams broaden the allowed parameter space, allowing $\tan β$ as low as 10 and pseudoscalar masses as large as $\cal{O}$(1 TeV) while fulfilling the stringent constraints from precision and flavor observable. Similar results are obtained for Type-II scenarios, but there the parameter space is more restricted by flavor observables.
description: 25 pages, 7 captioned figures; v2: version published in PRD
அகநானூற்றில் பொருள்தேடலும் இல்லறக் கடமைகளும்
Creators: name: Parimala T
Publisher: name: figshare
Year: 2020
Subjects: subject: 200315 Indian Languages
subject: FOS: Languages and literature

description: இவ்வுலக உயிர்களின் மேல் அருள் இல்லாதவர்க்கு தேவர்கள் வாழும் வீட்டுலகத்து இன்பம் இல்லை.அதுபோல பொருள் இல்லாதவர்க்கு இவ்வுலகத்து இன்பம் இல்லை. அவ்வுலகத்து இன்பத்திற்கு அருள் காரணமாவதுபோல, இவ்வுலகத்து இன்பத்திற்குப் பொருள் அவசியம் என்பதை இக்கட்டுரை உணர்த்துகிறது.
Local Supermassive Black Holes and Relics of Active Galactic Nuclei
Creators: name: Marconi, A.
name: Risaliti, G.
name: Gilli, R.
name: Hunt, L. K.
name: Maiolino, R.
name: Salvati, M.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We summarize a study where we test the hypothesis that local black holes (BH) are relics of AGN activity. We compare the mass function of BHs in the local universe with that expected from AGN relics, which are BHs grown entirely with mass accretion during AGN phases. The local BH mass function (BHMF) is estimated by applying the well-known correlations between BH mass, bulge luminosity and stellar velocity dispersion to galaxy luminosity and velocity functions. The density of BHs in the local universe is 4.6 (-1.4;+1.9) 10^5 Msun Mpc-3. The relic BHMF is derived from the continuity equation with the only assumption that AGN activity is due to accretion onto massive BHs and that merging is not important. We find that the relic BHMF at z=0 is generated mainly at z<3. Moreover, the BH growth is anti-hierarchical in the sense that smaller BHs (MBH<10^7 Msun) grow at lower redshifts (z<1) with respect to more massive ones (z~1-3). Unlike previous work, we find that the BHMF of AGN relics is perfectly consistent with the local BHMF indicating the local BHs were mainly grown during AGN activity. This agreement is obtained while satisfying, at the same time, the constraints imposed by the X-ray background. The comparison with the local BHMF also suggests that the merging process is not important in shaping the relic BHMF, at least at low redshifts (z<3). Our analysis thus suggests the following scenario: local BHs grew during AGN phases in which accreting matter was converted into radiation with efficiencies eff=0.04-0.16 and emitted at a fraction lambda=0.1-1.7 of the Eddington luminosity. The average total lifetime of these active phases ranges from ~4.5 10^8 yr for MBH<10^7 Msun to ~1.5 10^8 yr for MBH>10^9 Msun.
description: 6 pages, contributed paper to Proceedings of the Conference on "Growing Black Holes" held in Garching, Germany, on June 21-25, 2004, edited by A. Merloni, S. Nayakshin and R. Sunyaev, Springer-Verlag series of "ESO Astrophysics Symposia"
title: Vocabulary Testing and the Influence of Second Language on Third Language Vocabulary Acquisition
Creators: name: Szabo, Csaba Zoltán
Publisher: name: The Open University
Year: 2017

description: Learning and speaking foreign languages are regarded today as the norm. Simultaneously, empirical findings in the area of multilingualism have recently demonstrated that the mental lexicon of a language learner consists of intertwined systems where languages interact with each other, rather than remain separate entities. However, studies that explore how different lexicons are integrated and influence each other in the case of multilinguals are relatively scarce. This thesis seeks to contribute to this gap in research reporting two empirical studies drawing on a vocabulary testing perspective. The studies investigate the impact of prior lexical knowledge on additional language learning of Hungarian native speakers, who speak Romanian as an L2 and English as an L3. From a theoretical standpoint, the studies contest the traditional assumption that foreign language vocabulary acquisition can be explained solely by measures of frequency of word occurrence. Instead is contended that cross-linguistic similarities, namely cognates, provide a special bridge between languages and also need to be taken into account. At a more substantive level, it aims to explore (1) the relationship between learners’ Romanian and English written lexical knowledge; (2) the facilitatory effect of cognates; and (3) the implications of this for vocabulary assessments. To address these aims, Romanian versions of Nation’s Vocabulary Levels Test (VLT) and Vocabulary Size Test (VST) have been developed, assessed for validity, and applied. The findings indicate that there is a strong connection between multilinguals’ Romanian L2 and English L3 lexica. Learners’ lexical proficiency can be described as a function of frequency but is also influenced by cognateness. Therefore, word frequency and cognateness in conjunction can potentially increase test accuracy and validity, and enable a more in-depth understanding of vocabulary size and lexical accessibility. These conclusions are drawn from a vocabulary testing perspective, but further pedagogical implications, future directions for research and limitations are also offered.
The light-front vacuum and dynamics
Creators: name: Polyzou, W. N.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: I give a quantum theoretical description of kinematically invariant vacuua on the algebra of free fields restricted to a light front and discuss the relation between the light-front Hamiltonian, P-, the vacuum, and Poincare invariance. This provides a quantum theoretical description of zero modes.
description: 5 pages, Talk at Light-Cone 2004
Az egyéni gazdaságok technikai erőforrás-ellátottsága az Észak-Alföldi régió kistérségeiben
Creators: name: Vizdák, Károly
name: Vizdák, Károly
Publisher: name: Unknown
Year: 2004
Subjects: Community/Rural/Urban Development
Farm Management

description: A releváns hazai szakirodalom és kutatási eredményeink egyértelműen rávilágítanak arra, hogy Magyarországon a fejlett országokhoz képest alacsony a vonóerő kapacitás, es arra is, hogy a hazai mezőgazdasági géppark nem felel meg a minőségi termék előállítás kívánalmainak. A gépek többsége túlkoros, s a géppark nem igazodik az átalakulást követő birtokstruktúrához. A gépesítettség jelen állapotában már a fejlődés korlátozó tényezője, ami nyugtalanító az uniós csatlakozást követően is. Úgy tűnik, hogy a magyar mezőgazdaság egyik versenyhátránya a nem megfelelő technikai ellátottság. Ezek az általános megállapítások azonban regionálisan és gazdaságonként is igen nagy különbségeket takarnak. A helyi, regionális és központi döntéshozók számára egyaránt fontosak ezért az e különbségeket, s a regionális sajátosságokat verifikálhatóan leíró összefüggések, s az ezekre alapozott szintetizált, új ismeretek. A cikk az egyéni gazdaságok technikai erőforrás-ellátottságában fellelhető területi különbségek kimutatására és azok okainak feltárására irányuló vizsgálatok eredményeit mutatja be az Észak-Alföld kistérségeiben. -------------- Relevant Hungarian publications as well as results of our own research indicate that in comparison with western, more developed countries that in Hungary the hauling capacity of farms is low, and the machines used are unable to produce the quality required. Most machines are over-age and do not fit the recently transformed structure of properties. The actual level of mechanisation is a limiting factor of development and does not apply any more to the norms of the EU, which is a matter of concern for the period ahead. Hungarian agriculture suffers competitive drawbacks because its low supplies of technical equipment. Those general statements, however, have to be specified according to the region or even to individual farms because the variation is wide. Local, regional or even central decisions have to be based on exact knowledge of the actual objects. The study aims to clear the possible details necessary to synthesise the data raised in order to gain information concerning the interaction of local resources and technical equipment referring to a micro-region of the northern Hungarian Great Plain.