cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Technical efficiency in the agricultural sectors of selected CARICOM countries
Creators: name: Ligeon, C. M.
name: Jolly, C. M.
name: Ligeon, C. M.
name: Jolly, C. M.
Publisher: name: Unknown
Year: 2010
Subjects: subject: International Development
subject: Production Economics
subject: Technical efficiency
subject: agricultural sectors
subject: CARICOM

description: The Caribbean Common Market (CARICOM) countries are investing in agricultural development with limited knowledge of the technical efficiencies emanating from recent changes within the sector. Hence, it is important to investigate whether agricultural efficiencies in Caribbean agriculture are enhanced through resource allocation, and whether growth in related sectors fosters linkage development with agriculture. We employ a stochastic production frontier, log-linear, and Tobit models, using cross-sectional time series data from 1960 to 2006 for eleven CARICOM countries to examine factors influencing Caribbean countries’ efficiency of agricultural contribution to Gross Domestic Product (GDP) per labor. The probability of the χ2 is 0.0001 indicating that the model is appropriate to measure the production frontier. The gamma (γ= 0.963) indicates that the efficiency, or inefficiency, is related to the explanatory variables, while only 3.7 percent is due to random errors. Cropland per arable land per agricultural labor force, pastureland per arable land per agricultural labor force, fertilizer per crop land, and pasture land per agricultural labor force positively influence agriculture per labor force contribution to GDP, while tractors per crop land per agricultural labor force negatively influence agricultural contribution to GDP per labor. The technical efficiencies of these countries’ agriculture vary from 30 percent for St. Vincent to 95 percent for the Dominican Republic. Dominica and St. Lucia have efficiencies of 32 and 33 percent, respectively, whereas Haiti and Barbados have 93 and 94 percent, respectively. Jamaica has 80 percent while Guyana has 57 percent. All other CARICOM countries (Trinidad and Tobago, Suriname, and Belize) have less than 50 percent efficiency. Industrial growth and sugar production reduce levels of technical inefficiencies, while urban population growth rate positively influences inefficiency in the sector. The CARICOM countries must examine the factors that influence agricultural efficiency both at the micro and macro levels, and use a holistic approach that encompasses the involvement of other sectors that provide linkages to the agricultural sector. The governments can develop programs to limit the urban population and industrial growth rates, which enhance agricultural inefficiency.
$H^1$-Stability of the $L^2$-Projection onto Finite Element Spaces on Adaptively Refined Quadrilateral Meshes
Creators: name: Ali, Mazen
name: Funken, Stefan A.
name: Schmidt, Anja
Publisher: name: arXiv
Year: 2020
Subjects: subject: Numerical Analysis (math.NA)
subject: FOS: Mathematics
subject: 65M50

description: The $L^2$-orthogonal projection $Π_h:L^2(Ω)\rightarrow\mathbb{V}_h$ onto a finite element (FE) space $\mathbb{V}_h$ is called $H^1$-stable iff $\|\nablaΠ_h u\|_{L^2(Ω)}\leq C\|u\|_{H^1(Ω)}$, for any $u\in H^1(Ω)$ with a positive constant $C\neq C(h)$ independent of the mesh size $h>0$. In this work, we discuss local criteria for the $H^1$-stability of adaptively refined meshes. We show that adaptive refinement strategies for quadrilateral meshes in 2D (Q-RG and Q-RB), introduced originally in Bank et al. 1982 and Kobbelt 1996, are $H^1$-stable for FE spaces of polynomial degree $p=2,\ldots,9$.
description: 19 pages, 4 figures, 6 tables
Factors affecting the relative competitiveness of cassava production in southwestern Trinidad
Creators: name: Patterson-Andrews, Hazel
name: Pemberton, Carlisle
name: Patterson-Andrews, Hazel
name: Pemberton, Carlisle
Publisher: name: Unknown
Year: 2010
Subjects: subject: Agribusiness
subject: Marketing
subject: FOS: Economics and business
subject: Production Economics
subject: Productivity Analysis
subject: Competitiveness
subject: cassava production
subject: Trinidad

description: This study sought to determine the factors affecting the relative competitiveness (RC) measured as the normalized profit per acre, of cassava farmers in South Western Trinidad through a determination of the factors affecting the mean and variance of the RC inefficiency term of the farmers. A sample of 112 small farmers growing cassava as their main crop provided the data for the study. A normalized translog stochastic RC frontier model was estimated. The model also determined the factors affecting the variance of the symmetric random error. The results showed that the variance of the symmetric error was affected by age as well as the number of parcels of land owned by the farmer. Wage rate, crop acreage, wage rate squared and the cross product term of wage rate and family labour were significant variables affecting the RC. The study found that the larger the number of parcels of land owned by the farmer, the greater was the RC efficiency and the smaller the variance associated with that RC efficiency. In addition men had a higher RC efficiency, but women tended to have a lower variance in their RC efficiency. Increasing age significantly increased the variance of the RC efficiency, but reduced the variance of the symmetric random error term.
Assessment of a Novel Combinational Cosmeceutical Formulation for Mitigation of UV Radiation Induced Psoriasis in Rats
Creators: name: Bora, Nilutpal Sharma
name: Pronobesh Chattopadhyay
name: Mazumder, Bhaskar
name: Mandal, Santa
name: Karmakar, Sanjeev
name: Danswrang Goyary
Publisher: name: figshare
Year: 2020
Subjects: subject: 111599 Pharmacology and Pharmaceutical Sciences not elsewhere classified
subject: FOS: Clinical medicine
subject: 111504 Pharmaceutical Sciences

description: The objective of the aforementioned study was to evaluate the anti-psoriatic effect of a newly formulated combinational topical sunscreen containing US FDA approved UV filters along with pumpkin seed oil and melatonin using UV radiation induced psoriasis in rats. Melatonin and pumpkin seed oil were incorporated into the formulation for enhancement of UV protection by exerting an antioxidant effect. The animals were divided into four groups (6/group) and all received their respective formulations dermally prior to chronic UV irradiation for 28 days. The vehicle-control group animals received a placebo formulation, standard group received a marketed sunscreen formulation and the test group received test formulation. The positive control-group received only UV radiation and a normal-control group was also maintained. Macroscopic and histological evaluation of the exposed dorsal skin of rats revealed that the test formulation was able to significantly reduce the UV-induced increase in skin fold, epidermal thickness and skin edema. The formulation was also able to inhibit the reduction of hydroxyproline content and incidence of lipid perioxidation (LPO) within the skin tissues of exposed animals. The formulation was also able to inhibit the release of proinflammatory cytokines (IL-1β, IL-6 and TNF-α) and induced a downregulation of NF-κB and COX-2 caused by chronic UV exposure. In conclusion, it can be stated that the newly formulated sunscreen formulation is able to elicit an anti-psoriatic effect via reduction of proinflammatory cytokine release and regulation of NF-κB and COX-2 genes.
Implications of non-uniform wind stress on lake circulation : with application to Quesnel Lake, B.C.
Creators: name: North, Ryan P.
Publisher: name: University of British Columbia
Year: 2010

description: In hydrodynamic modeling of lakes, wind stress is often assumed uniform over an entire water body. This is not always an accurate representation of the wind stress since it does not consider wind distribution inhomogeneities or the effect of windwaves. These factors modify wind stress at the air-water interface and mixing induced in the surface waters. This thesis focuses on the influence of wind-waves on wind stress distribution and discusses the implications for wind-driven circulation in stratified water bodies. Significant wave height throughout the basin is estimated using fetch and duration limited equations. Wind stress is then calculated from wind speed and a modified coefficient of drag. The latter is related to the significant wave height via a surface roughness formulation. This accounts for variations in wind stress due to wave fetch and duration. Wind stress estimated with and without the influence of wind-waves is applied to an analytical solution for wind-driven circulation in a simplified lake. The comparison demonstrates the significance of wind-waves on lake circulation. Results indicate an increase in internal seiching and surface layer currents with the inclusion of the surface roughness height. Further testing of the influence of wind-waves is conducted on Quesnel Lake, B.C. Comparisons using an idealized wind (uniform and steady) once again indicates an increase in the internal circulation when accounting for surface roughness. The importance of properly quantifying the wind speed and direction is also discussed.
Ricci flows and their integrability in two dimensions
Creators: name: Bakas, Ioannis
Publisher: name: arXiv
Year: 2004
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We review the main aspects of Ricci flows as they arise in physics and mathematics. In field theory they describe the renormalization group equations of the target space metric of two dimensional sigma models to lowest order in the perturbative expansion. As such they provide an off-shell approach to the problem of tachyon condensation and vacuum selection in closed string theory in the weak gravitational regime. In differential geometry they introduce a systematic framework to find canonical metrics on Riemannian manifolds and make advances towards their classification by proving the geometrization conjecture. We focus attention to geometric deformations in low dimensions and find that they also exhibit a rich algebraic structure. The Ricci flow in two dimensions is shown to be integrable using an infinite dimensional algebra with antisymmetric Cartan kernel that incorporates the deformation variable into its root system. The deformations of two dimensional surfaces also control the Ricci flow on 3-manifolds and their decomposition into prime factors by applying surgery prior to the formation of singularities along shrinking cycles. A few simple examples are briefly discussed including the notion of Ricci solitons. Other applications to physical systems are also listed at the end.
description: 15 pages, contribution to Strings 2004; two minor typos corrected
Composition and antimicrobial activity of essential oil from Cinnamomum bejolghota (Lauraceae)
Creators: name: Bora, Nilutpal Sharma
name: Gogoi, Barnali
name: Bibhuti Bhusan Kakoti
Publisher: name: figshare
Year: 2020
Subjects: subject: 111599 Pharmacology and Pharmaceutical Sciences not elsewhere classified
subject: FOS: Clinical medicine
subject: 111504 Pharmaceutical Sciences

description: The study is aimed at evaluating the antimicrobial properties of the essential oil of Cinnamomum bejolghota bark, indicating the possibility of its potential use in the formulation of natural remedies for the topical treatment of infections & in food industry.
REZYGNACJA Z PŁATNOŚCI OBSZAROWYCH JAKO PRZEJAW LIKWIDACJI GOSPODARSTW ROLNYCH
Creators: name: Wojewodzic, Tomasz
name: Wojewodzic, Tomasz
Publisher: name: Unknown
Year: 2014
Subjects: subject: Agribusiness
subject: farms
subject: liquidation of farms
subject: area payments
subject: farm liquidation
subject: Małopolska and Pogórze

description: Area payments are one of basic instruments of the European Union’s Common Agricultural Policy. The paper’s purpose was to assess the intensity of phenomenon of land owners withdrawing from obtaining Single Area Payments (SAPs). The conducted research showed large diversification of the Małopolska and Pogórze regions in terms of changes of the number of SAP beneficiaries. Land owners from territorial units characterized by intensive recessive phenomena in agriculture, i.e. a relatively greater land area characterized by a poor condition of agriculture and a higher share of farms without agricultural income were more inclined to resign from area payments.
A Scaling Law for Quark Masses
Creators: name: Fritzsch, Harald
name: Özer, Alp Deniz
Publisher: name: arXiv
Year: 2004
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We show that the observed quark masses seem to be consistent with a simple scaling law. Due to the precise values of the heavy quarks we are able to calculate the quark masses in the light quark sector. We discuss a possible value for the strange quark mass. We show that the u-type quark masses obey the scaling law very well.
description: 4 pages
Brevísima clasificación de quienes recogen basura durante el Covid-19
Creators: name: Pérez Caballero, Jesús
Publisher: name: Zenodo
Year: 2020
Subjects: COVID-19, basura, vagabundos, Jalisco, México

description: El Covid-19 no es solamente una gran crisis que se ramifica en otras de similar magnitud, simultáneas o posteriores, sino que modifica aspectos cotidianos. Por ejemplo, a consecuencia de los encierros masivos aumenta la basura de los hogares. Observé, desde parte de mi confinamiento en la colonia Americana (Guadalajara, Jalisco, México)), cinco tipos de quienes la recogen extraoficialmente: Profesionales, sobrevenidos, merodeadores, carreteros y Muselmänner.
description: Columna "Desde la frontera", publicada en El Mañana de Nuevo Laredo, p. 4 (local).
PODATEK AKCYZOWY Z WYROBÓW ALKOHOLOWYCH JAKO ŹRÓDŁO FINANSOWANIA BUDŻETU PAŃSTWA W LATACH 1999-2012
Creators: name: Zmarzłowski, Krzysztof
name: Orłowski, Arkadiusz
name: Zmarzłowski, Krzysztof
name: Orłowski, Arkadiusz
Publisher: name: Unknown
Year: 2014
Subjects: subject: Agribusiness
subject: excise duty
subject: beer
subject: spirits
subject: wine
subject: Spearman’s rank correlation coefficient

description: In this paper we try to find out of how level of excise duty on alcohols affect on level of national incomes in Poland. For this aim we made tables and figures different analysis. Analysis Spearman’s rank correlation coefficient between excise duty on spirits, beer and wine were additional elements. Table and graphical analysis investigate that there is relationship between excise duty on spirits and national incomes. Unfortunately analysis Spearman’s rank correlation coefficient show, that for statistical point of view, there is now correlation between this two variables. Interesting results we obtained for a beer. Both analysis shows that National Treasury is positively correlated with level of excise duty on beer. In case of wine conducted analysis doesn’t give clearly results about direction of relationship between excise duty on wine and national incomes.
Backscattering off a driven Rashba impurity at the helical edge
Creators: name: Privitera, Lorenzo
name: Ziani, Niccolò Traverso
name: Safi, Inès
name: Trauzettel, Björn
Publisher: name: arXiv
Year: 2020
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: The spin degree of freedom is crucial for both understanding and exploiting the particular properties of the edges of two-dimensional topological insulators. In the absence of superconductivity and magnetism, Rashba coupling is the most relevant single particle perturbation in this system. Since Rashba coupling does not break time reversal symmetry, its influence on transport properties is only visible if processes that do not conserve the single particle energy are included. Paradigmatic examples of such processes are electron-electron interactions and time dependent external drivings. We analyze the effects of a periodically driven Rashba impurity at the helical edge, in the presence of electron-electron interactions. Interactions are treated by means of bosonization and the backscattering current is computed perturbatively up to second order in the impurity strength. We show that the backscattering current is non-monotonic in the driving frequency. This property is a fingerprint of the Rashba impurity, being absent in the case of a magnetic impurity in the helical liquid. Moreover, the non-monotonic behaviour allows us to directly link the backscattering current to the Luttinger parameter $K$, encoding the strength of electron-electron interactions.
description: 5+4 pages, 2 figures
WPŁYW KAPITAŁU WŁASNEGO NA RENTOWNOŚĆ I BEZPIECZEŃSTWO FINANSOWE WYBRANYCH SPÓŁDZIELNI MLECZARSKICH W POLSCE
Creators: name: Zuba, Jan
name: Zuba-Ciszewska, Maria
name: Zuba, Jan
name: Zuba-Ciszewska, Maria
Publisher: name: Unknown
Year: 2014
Subjects: subject: Agribusiness
subject: equity capital
subject: milk cooperative
subject: profitability
subject: financial safety

description: The aim of the work was examined of the influence of the equity capital value on the security level of financial and profitabilities of 41 milk cooperatives within a period of four following years from 14 provinces in Poland. The examined cooperatives were grouped into 4 groups. A base of their grouping were values of quartiles of equity capital of these dairies. Cooperatives about the higher level of the equity capital had the higher profitability, however in case of the financial safety it cannot draw unambiguous conclusions.
Les exploitations agricoles polonaises à la veille de l’élargissement : efficacité des facteurs de production et structure financière
Creators: name: Latruffe, Laure
name: Latruffe, Laure
Publisher: name: Unknown
Year: 2005
Subjects: subject: Agricultural Finance
subject: Labor and Human Capital
subject: Poland
subject: farms
subject: technical efficiency
subject: Data Envelopment Analysis
subject: indebtedness

description: Parmi les pays d’Europe centrale et orientale entrés dans l’Union européenne (UE) en mai 2004, la Pologne est le plus grand pays agricole. L’objectif de cet article est d’examiner la structure économique des exploitations polonaises individuelles et, en particulier, d’évaluer leur niveau d’efficacité technique par la méthode Data Envelopment Analysis, avec les données les plus récentes. Le papier se propose également de détecter les principaux déterminants de cette efficacité. Sa contribution majeure est d’inclure notamment des indicateurs financiers comme déterminants potentiels, en utilisant une régression en deux étapes pour tenir compte de leur endogénéité possible avec le score d’efficacité. Les résultats indiquent que les exploitations à orientation « élevage » sont les plus efficaces. De plus, outre la petite taille et la faible intégration commerciale des exploitations, les principales contraintes à l’efficacité se situent au niveau du capital, qui est obsolète, et du travail, qui est peu diplômé. Une telle analyse est riche d’enseignements car elle peut contribuer à éclairer les autorités de l’UE quant au ciblage et aux effets potentiels des politiques communautaires appliquées à la Pologne, en termes d’amélioration de l’efficacité technique des exploitations.
Quantitative analysis of directional spontaneous emission spectra from light sources in photonic crystals
Creators: name: Nikolaev, Ivan S.
name: Lodahl, Peter
name: Vos, Willem L.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Popular Physics (physics.pop-ph)
subject: FOS: Physical sciences

description: We have performed angle-resolved measurements of spontaneous-emission spectra from laser dyes and quantum dots in opal and inverse opal photonic crystals. Pronounced directional dependencies of the emission spectra are observed: angular ranges of strongly reduced emission adjoin with angular ranges of enhanced emission. It appears that emission from embedded light sources is affected both by the periodicity and by the structural imperfections of the crystals: the photons are Bragg diffracted by lattice planes and scattered by unavoidable structural disorder. Using a model comprising diffuse light transport and photonic band structure, we quantitatively explain the directional emission spectra. This provides detailed understanding of the transport of spontaneously emitted light in real photonic crystals, which is essential in the interpretation of quantum-optics in photonic band-gap crystals and for applications wherein directional emission and total emission power are controlled.
description: 10 pages, 10 figures, corrected pdf, inserted new reference
The Infrared Medium-deep Survey. \Romannum{7}. Faint Quasars at $z \sim 5$ in the ELAIS-N1 Field
Creators: name: Shin, Suhyun
name: Im, Myungshin
name: Kim, Yongjung
name: Hyun, Minhee
name: Pak, Soojong
name: Jeon, Yiseul
name: Ji, Tae-Geun
name: Ahn, Hojae
name: Byeon, Seoyeon
name: Han, Jimin
name: Hwang, Sungyong
name: Kim, Sophia
name: Lim, Gu
name: Paek, Insu
name: Paek, Gregory S. H.
name: Taak, Yoon Chan
name: Choi, Changsu
name: Hong, Jueun
name: Jun, Hyunsung David
name: Kim, Dohyeong
name: Kim, Duho
name: Kim, Minjin
name: Kim, Jae-Woo
name: Kim, Ji Hoon
name: Lee, Hye-In
name: Lee, Seong-Kook
name: Park, Won-Kee
name: Park, Woojin
name: Yoon, Yongmin
Publisher: name: arXiv
Year: 2020
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: The intergalactic medium (IGM) at $z\sim$ 5 to 6 is largely ionized, and yet the main source for the IGM ionization in the early universe is uncertain. Of the possible contributors are faint quasars with $-26 \lesssim M_{\rm 1450} \lesssim -23$, but their number density is poorly constrained at $z\sim5$. In this paper, we present our survey of faint quasars at $z\sim5$ in the European Large-Area {\it ISO} Survey-North 1 (ELAIS-N1) field over a survey area of 6.51 deg$^2$ and examine if such quasars can be the dominant source of the IGM ionization. We use the deep optical/near-infrared data of the ELAIS-N1 field as well as the additional medium-band observations to find $z \sim 5$ quasars through a two-step approach using the broadband color selection, and SED fitting with the medium-band information included. Adopting Bayesian information criterion, we identify ten promising quasar candidates. Spectra of three of the candidates are obtained, confirming all of them to be quasars at $z\sim5$ and supporting the reliability of the quasar selection. Using the promising candidates, we derive the $z\sim5$ quasar luminosity function at $-26 \lesssim M_{\rm 1450} \lesssim -23$. The number density of faint $z\sim5$ quasars in the ELAIS-N1 field is consistent with several previous results that quasars are not the main contributors to the IGM-ionizing photons at $z\sim5$
description: 16 pages, 9 figures, 4 tables. Accepted for publication in ApJ
Quantum Monte Carlo simulation for the spin-drag conductance of the Hubbard model
Creators: name: Louis, K.
name: Gros, C.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: In the situation of two electro-statically coupled conductors a current in one conductor may induce a current in the other one. We will study this phenomenon, called Coulomb drag, in the Hubbard chain where the two ``conductors'' are given by fermions with different spin orientation. With the aid of a Monte Carlo (MC) approach which we presented in a recent paper we calculate the Transconductance in different variants of the Hubbard chain (with/without impurity and additional [long-ranged] interactions) for different fillings.
description: 9 pages, 11 figures
Analyse exploratoire de quelques stratégies de fourniture ‘non publique’ des biens ‘publics’
Creators: name: Déprés, Christophe
name: Grolleau, Gilles
name: Mzoughi, Naoufel
name: Déprés, Christophe
name: Grolleau, Gilles
name: Mzoughi, Naoufel
Publisher: name: Unknown
Year: 2005
Subjects: subject: Environmental Economics and Policy
subject: non public provision
subject: collective goods
subject: new institutional economics

description: Le caractère ‘collectif’ de certains biens et services a souvent légitimé, parfois indûment, l’intervention de la ‘main visible’ de l’Etat. L’économie néo-institutionnelle initiée par Coase conteste cette vision en interrogeant la nature même des biens et en resituant le débat sur le terrain de l’efficience économique. Prenant acte, nous définissons le concept de bien en référence à son mode de financement, de production et d’accès, ce qui fait apparaître son caractère construit. L’approche coasienne cherche, dans une perspective comparative, à identifier les arrangements institutionnels réels susceptibles de minimiser l’ensemble des coûts de production et de transaction. Une telle approche n’aboutit pas nécessairement à la négation de l’intervention étatique, mais plutôt à une redéfinition des modalités de son intervention afin de permettre la réalisation des bénéfices propres aux arrangements privés. La mobilisation de la grille d’analyse de l’économie des coûts de transaction nous permet de mettre en évidence la diversité des arrangements possibles sur un continuum allant du ‘tout-Etat’ au ‘tout-marché’. Nous étudions trois arrangements institutionnels susceptibles d’aboutir à la production non publique stricto sensu de biens publics d’environnement : l’association de bénéfices privés, l’organisation collective, la contractualisation. Les modalités d’implication des pouvoirs publics sont mentionnées, en insistant sur le degré de mixité des arrangements institutionnels. Les exemples évoqués concernent essentiellement le secteur agricole, où la nature collective de certaines productions environnementales a considérablement servi à justifier l’intervention de l’Etat.
Rayleigh-Taylor instability by segregation in an evaporating multi-component microdroplet
Creators: name: Li, Yaxing
name: Diddens, Christian
name: Segers, Tim
name: Wijshoff, Herman
name: Versluis, Michel
name: Lohse, Detlef
Publisher: name: arXiv
Year: 2020
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: The evaporation of multi-component droplets is relevant to various applications but challenging to study due to the complex physicochemical dynamics. Recently, Li (2018) reported evaporation-triggered segregation in 1,2-hexanediol-water binary droplets. In this present work, we added 0.5 wt% silicone oil into the 1,2-hexanediol-water binary solution. This minute silicone oil concentration dramatically modifies the evaporation process as it triggers an early extraction of the 1,2-hexanediol from the mixture. Surprisingly, we observe that the segregation of 1,2-hexanediol forms plumes, rising up from the rim of the sessile droplet towards the apex during the droplet evaporation. By orientating the droplet upside down, i.e., by studying a pendant droplet, the absence of the plumes indicates that the flow structure is induced by buoyancy, which drives a Rayleigh-Taylor instability (i.e., driven by density differences & gravitational acceleration). From micro-PIV measurement, we further prove that the segregation of the non-volatile component (1,2-hexanediol) hinders the evaporation near the contact line, which leads to a suppression of the Marangoni flow in this region. Hence, on long time scales, gravitational effects play the dominant role in the flow structure, rather than Marangoni flows. We compare the measurement of the evaporation rate with the diffusion model of Popov (2005), coupled with Raoult's law and the activity coefficient. This comparison indeed confirms that the silicone-oil-triggered segregation of the non-volatile 1,2-hexanediol significantly delays the evaporation. With an extended diffusion model, in which the influence of the segregation has been implemented, the evaporation can be well described.
LOKALNE STRATEGIE INNOWACJI JAKO NARZĘDZIE ROZWOJU POWIATÓW ZAGROŻONYCH STAGNACJĄ W REGIONIE LUBELSKIM
Creators: name: Adamowicz, Mieczysław
name: Adamowicz, Mieczysław
Publisher: name: Unknown
Year: 2014
Subjects: subject: Agribusiness
subject: innovation strategies
subject: local development
subject: frontier regions

description: Paper refers to local innovation strategies of four districts of Lublin Province: Biała Podlaska, Chełm, Krasnystaw and Włodawa. These districts together with towns of Biała Podlaska and Chełm create two (north and south) areas menaced by stagnation within the Lublin region. The aim of the paper is a comparative presentation of local strategies and economic sectors influencing the competitive and innovative potential of districts as well as possibilities and ways of supporting the multi aspects and multi level cooperation for a more dynamics socio-economic development. Critical evaluation of local innovation strategies, their goals and development priorities resulted in conclusions referred to the methodology and contents of strategic planning and implementation of local strategies.
Self-Energy Correction to the Two-Photon Decay Width in Hydrogenlike Atoms
Creators: name: Jentschura, U. D.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: We investigate the gauge invariance of the leading logarithmic radiative correction to the two-photon decay width in hydrogenlike atoms. It is shown that an effective treatment of the correction using a Lamb-shift "potential" leads to equivalent results in both the length as well as the velocity gauges provided all relevant correction terms are taken into account. Specifically, the relevant radiative corrections are related to the energies that enter into the propagator denominators, to the Hamiltonian, to the wave functions, and to the energy conservation condition that holds between the two photons; the form of all of these effects is different in the two gauges, but the final result is shown to be gauge invariant, as it should be. Although the actual calculation only involves integrations over nonrelativistic hydrogenic Green functions, the derivation of the leading logarithmic correction can be regarded as slightly more complex than that of other typical logarithmic terms. The dominant radiative correction to the 2S two-photon decay width is found to be -2.020536 (alpha/pi) (Zalpha)^2 ln[(Zalpha)^-2] in units of the leading nonrelativistic expression. This result is in agreement with a length-gauge calculation [S. G. Karshenboim and V. G. Ivanov, e-print physics/9702027], where the coefficient was given as -2.025(1).
description: 9 pages, RevTeX
Portschinskia himalayana Grunin 1962
Creators: name: Li, Xin-Yu
name: Pape, Thomas
name: Zhang, Dong
Publisher: name: Zenodo
Year: 2020
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Diptera
Oestridae
Portschinskia
Portschinskia himalayana

description: PORTSCHINSKIA HIMALAYANA GRUNIN, 1962
Portschinskia himalayana Grunin, 1962: 91. Type locality: India: Sikkim.
Portschinskia himalayana: Grunin (1965: 54); Zumpt (1965: 192); Padmanaban et al. (1990); Pont (1973: 701); Soós & Minář (1986: 246); Colwell et al. (2006: 262).
Diagnosis: Hair-like setae on frons and facial ridge dark brown or black. Abdomen with yellow setae anteriorly, black setae in the middle in male and reddish setae posteriorly, and in female with predominantly black setae in anterior and reddish setae on last two segments.
Redescription: Male: Body length 18.8 mm; wing length and width 15.5 mm × 6.2 mm (N = 1). Female unknown. Large compound eye, height relative to head ≥ 1/2. Antennal pedicel broader than long, with a distinct concavity in the middle of the distal margin (Fig. 5D). Width of frons ~1/7 width of head in dorsal view in male. Hair-like setae on frons and facial ridge dark brown or black (Fig. 5D), on presutural area of scutum, postpronotal lobe, anepisternum, postalar callus and scutellum yellow. Abdomen with yellow setae anteriorly, black setae in the middle and reddish setae posteriorly in male, and in female the abdomen with predominantly black setae anteriorly, followed by reddish setae on last two segments (Figs 1D, 3D). Wing hyaline or light brown; vein M strongly curved at the level of dm-cu; cell r 4 + 5 closed with a short petiole (Fig. 9D).
description: Published as part of Li, Xin-Yu, Pape, Thomas & Zhang, Dong, 2020, Taxonomy, phylogeny and evolution of the bumblebee bot flies (Oestridae: Hypodermatinae: Portschinskia), pp. 942-973 in Zoological Journal of the Linnean Society 190 (3) on pages 952-953, DOI: 10.1093/zoolinnean/zlz176, http://zenodo.org/record/14858401
Les formes d’intervention des pouvoirs publics dans l’approvisionnement en bestiaux de Paris : la Caisse de Poissy de l’Ancien Régime au Second Empire
Creators: name: Leteux, Sylvain
name: Leteux, Sylvain
Publisher: name: Unknown
Year: 2005
Subjects: subject: International Relations/Trade
subject: food supply in Paris
subject: debate on liberalism
subject: free trade
subject: Old Regime economy
subject: cattle ealing

description: Héritière d’une longue tradition d’intervention des autorités publiques pour la régulation des marchés d’approvisionnement en bestiaux de Paris, la Caisse de Poissy connaît de nombreuses vicissitudes sous l’Ancien Régime, au gré des priorités du pouvoir monarchique et/ou municipal et des pressions exercées tantôt par les bouchers, tantôt par les herbagers. Créée avant tout pour garantir le paiement entre les bouchers et les marchands de bestiaux, la Caisse est aussi une source de revenus non négligeable pour la Ville de Paris. Pendant toute son existence, la Caisse est l’objet d’un vif débat entre les partisans de la liberté des échanges et ceux qui réclament le maintien d’un système, censé garantir un approvisionnement régulier de la capitale. C’est l’évolution des termes de ce débat sur le long terme, depuis l’Ancien Régime jusqu’au Second Empire, qui est intéressante à suivre, notamment aux périodes où le système est provisoirement suspendu (1776, 1791, 1825).
Atomic and molecular gas properties during cloud formation
Creators: name: Syed, J.
name: Wang, Y.
name: Beuther, H.
name: Soler, J. D.
name: Rugel, M. R.
name: Ott, J.
name: Brunthaler, A.
name: Kerp, J.
name: Heyer, M.
name: Klessen, R. S.
name: Henning, Th.
name: Glover, S. C. O.
name: Goldsmith, P. F.
name: Linz, H.
name: Urquhart, J. S.
name: Ragan, S. E.
name: Johnston, K. G.
name: Bigiel, F.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Molecular clouds, which harbor the birthplaces of stars, form out of the atomic phase of the interstellar medium (ISM). We aim to characterize the atomic and molecular phases of the ISM and set their physical properties into the context of cloud formation processes. We studied the cold neutral medium (CNM) by means of $\rm HI$ self-absorption (HISA) toward the giant molecular filament GMF20.0-17.9 and compared our results with molecular gas traced by $^{13}\rm CO$ emission. We fitted baselines of HISA features to $\rm HI$ emission spectra using first and second order polynomial functions. The CNM identified by this method spatially correlates with the morphology of the molecular gas toward the western region. However, no spatial correlation between HISA and $^{13}\rm CO$ is evident toward the eastern part of the filament. The distribution of HISA peak velocities and line widths agrees well with $^{13}\rm CO$ within the whole filament. The column density probability density functions (N-PDFs) of HISA (CNM) and $\rm HI$ emission (tracing both the CNM and the warm neutral medium, WNM) have a log-normal shape for all parts of the filament, indicative of turbulent motions as the main driver for these structures. The $\rm H_2$ N-PDFs show a broad log-normal distribution with a power-law tail suggesting the onset of gravitational contraction. The saturation of $\rm HI$ column density is observed at $\sim$25$\rm\,M_{\odot}\,pc^{-2}$. We conjecture that different evolutionary stages are evident within the filament. In the eastern region, we witness the onset of molecular cloud formation out of the atomic gas reservoir while the western part is more evolved, as it reveals pronounced $\rm H_2$ column density peaks and signs of active star formation.
description: 21 pages, 19 PDF figures
Quantum ratchets in dissipative chaotic systems
Creators: name: Carlo, Gabriel G.
name: Benenti, Giuliano
name: Casati, Giulio
name: Shepelyansky, Dima L.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Chaotic Dynamics (nlin.CD)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Using the method of quantum trajectories we study a quantum chaotic dissipative ratchet appearing for particles in a pulsed asymmetric potential in the presence of a dissipative environment. The system is characterized by directed transport emerging from a quantum strange attractor. This model exhibits, in the limit of small effective Planck constant, a transition from quantum to classical behavior, in agreement with the correspondence principle. We also discuss parameter values suitable for implementation of the quantum ratchet effect with cold atoms in optical lattices.
description: Significant changes: Several text improvements and new results. Figure 2 modified. Figure 4 added
In-vitro antioxidant studies of the methanolic extract of the shoot of Calamus leptospadix Griff.
Creators: name: Bora, Nilutpal Sharma
name: Bibhuti Bhusan Kakoti
name: Sudarshana Bora
name: Gogoi, Barnali
Publisher: name: figshare
Year: 2020
Subjects: subject: 111504 Pharmaceutical Sciences
subject: FOS: Clinical medicine
subject: 111599 Pharmacology and Pharmaceutical Sciences not elsewhere classified

description: Calamus leptospadix Griff. belonging to family Arecaceae, isan important ethnomedicinal plant of Assam. Locally known as Lejaibet by the local Assamese community and is being wildly used by various communities in Assam. No detailed study or reports along with scientific evidence are availablewith this important plant. It is distributed in Bangladesh, Bhutan, north-eastern India, Myanmar (Kachin) and Nepal; mostly found on lowlands or mountain rainforests along river margins to 1300 m elevation. It is used in fever, piles, dyspepsia, biliousness; and as antiseptic, anti-bacterial and also used externally for cuts, burns, bruises, scalds. It is necessary to authenticate the information available on this plant since it is used as a therapeutic agent. Therefore the objective of this study is to evaluate the in-vitro antioxidant activity of the young shoots of Calamus leptospadix Griff. The evaluation of the antioxidant activity was established for the methanolic extract of the plant. The methanolic extract of the drug was evaluated for in vitro antioxidant activities using DPPH, Hydroxyl radical, Nitric oxide radical, reducing power ability and estimation of total phenolic and total flavonoid content. The methanolic extract of Calamus leptospadix showed a strong hydrogen donating capacity and can powerfully scavenge DPPH radical with an IC50 value of 29.21μg/ ml, whereas IC50 value of the standard drug was found to be 17.37 μg/ml.
La construction institutionnelle de la concurrence. Le cas du marché de la viande à Paris au XIXe siècle
Creators: name: Stanziani, Alessandro
name: Stanziani, Alessandro
Publisher: name: Unknown
Year: 2005
Subjects: subject: International Relations/Trade
subject: competition
subject: regulation
subject: quality
subject: contracts

description: In Paris, the market of the meat, as under the Old Regime, is regulated up through 1858. Throughout this length of time, regulatory norms coexist with an extremely liberal contract law. On the contrary, between 1858 and 1914, liberalization of prices and free entry on the market go along with the introduction of serious constraints on contractual will. This is to say that state policies and governance include micro (contracts rules) as well as macroeconomic rules. The legal qualification of public action is fundamental as it fixes the procedures of rules enforcement and, thus, economic actors’ legal-economic opportunities and behaviors. This interaction between rules and;the market is particularly clear in the process of products qualification; if commercial customs integrate legal provisions, at the same time they cannot be evoked and enforced out of an explicit reference in official rules. The question consists in understanding the relative place of formal rules and conventions. These considerations lead the author to raise doubts on the traditional chronological as well as logical opposition between free market and regulation. The paper will argue that economic standards and rules are neither in opposition (neo-classical argument), nor complementary (neo-institutionnalist approach) to the market, but they are constitutive of it. A Paris, le marché de la viande, strictement réglementé sous l’Ancien Régime, demeure tel jusqu’en 1858. Tout au long de cette période, les règlements coexistent avec un droit des contrats extrêmement libéral ; au contraire, entre 1858 et 1914, la libéralisation des prix et la libre entrée sur le marché s’accompagnent de contraintes importantes à la libre volonté contractuelle. C’est dire que l’action publique se compose d’instruments micro (la discipline de contrats) et de règlements macroéconomiques qui, eux, relèvent plutôt du droit administratif. Cette qualification juridique de l’action publique en économie est importante, car elle conditionne les modalités d’application des normes et, par ce biais, les opportunités et les comportements des acteurs. Cette interaction entre normes et marchés s’exprime en particulier dans le processus de qualification des produits ; si les usages du commerce complètent les règles de droit, en même temps, ils ne sauraient être mobilisés en dehors de ces dernières. La question consiste à comprendre de quelle manière règles formelles et conventions interviennent dans ce processus. Ces éléments réunis conduisent à remettre en discussion l’opposition traditionnelle, aussi bien chronologique que fonctionnelle, entre libre marché et réglementation. Les normes économiques ne sont ni en opposition (thèse néoclassique) ni complémentaires (argument néo-institutionnaliste) au marché ; elles sont constitutives de ce dernier.
Weinqualität in unterschiedlichen Organisationsformen: Warum schneiden Genossenschaften oft schlechter ab?
Creators: name: Höhler, Julia
name: Hildenbrand, Andreas
name: Höhler, Julia
name: Hildenbrand, Andreas
Publisher: name: Unknown
Year: 2015
Subjects: subject: Agribusiness
subject: Industrial Organization
subject: Institutional and Behavioral Economics
subject: Organisation
subject: Weinqualität
subject: Winzergenossenschaften

description: In der Literatur wird geäußert, dass die Organisationsform einen maßgeblichen Einfluss auf die Produktqualität ausübt. Zahlreiche empirische Befunde geben Hinweise darauf, dass dies auch in der Weinwirtschaft zutreffen kann. Sie deuten darauf hin, dass die Qualität von Genossenschaftsweinen oft nach oben beschränkt ist. In Anbetracht der einheitlichen empirischen Befunde und der fehlenden theoretischen Ergebnisse untersuchen wir, wie ein theoretisches Modell zur Erklärung des negativen Organisationseffekts auf die Qualität von Genossenschaftsweinen aussehen kann. Wir arbeiten die Organisationsstrukturen der unterschiedlichen Organisations-formen heraus und zeigen die jeweiligen Entscheidungsprobleme auf. Ergebnis ist, dass Winzergenossenschaften bei der Weinqualität nicht unbedingt schlechter abschneiden als andere Organisationsformen.
Valoración de los servicios ecosistémicos asociados a la pesca provistos por las Áreas Marinas Protegidas en Colombia
Creators: name: Cuervo, Rafael
name: Maldonado, Jorge Higinio
name: Rueda, Mario E.
name: Cuervo, Rafael
name: Maldonado, Jorge Higinio
name: Rueda, Mario E.
Publisher: name: Unknown
Year: 2014
Subjects: subject: Environmental Economics and Policy
subject: Land Economics/Use
subject: parques naturales marinos
subject: pesquerías
subject: modelación dinámica
subject: modelos bio-económicos
subject: biodiversidad
subject: efecto de rebosamiento.

description: Las áreas marinas protegidas son reconocidas en la actualidad como una alternativa de conservación de los ecosistemas marinos. Aunque la figura de protección reduce el área disponible para la actividad pesquera, se ha documentado que la misma puede convertirse en una fuente de recursos para la actividad en las zonas aledañas, a través del efecto de rebosamiento. El objetivo de este estudio es valorar los cambios sobre la provisión de recursos pesqueros, resultado del aumento en las áreas marinas protegidas en las costas colombianas, a través de un modelo dinámico bioeconómico para las pesquerías del camarón blanco (Litopenaeus occidentalis), pelada (Cynoscion phoxocephalus), pargo rojo, (Lutjanus purpureus) y jurel (Caranx hippos), cuatro especies importantes en términos sociales y económicos, en las costas del Pacífico y del Caribe. El modelo incluye un área protegida –con disponibilidad de hábitats esenciales- y un área no protegida, así como la posibilidad de migración entre ellas. Se analizan los cambios en los niveles de biomasa, captura, esfuerzo y los beneficios económicos de la actividad pesquera a través del tiempo, ante diferentes escenarios de protección. Se concluye que a pesar de la reducción del área disponible para la pesca, las áreas protegidas generan –en el mediano plazo- un aumento en los niveles de biomasa y en los beneficios de la actividad pesquera a través del efecto de rebosamiento, lo que permite afirmar que las áreas marinas protegidas constituyen una alternativa de conservación válida, con el potencial de generar beneficios económicos.
The Lorenz attractor is mixing
Creators: name: Luzzatto, Stefano
name: Melbourne, Ian
name: Paccaut, Frederic
Publisher: name: arXiv
Year: 2004
Subjects: subject: Dynamical Systems (math.DS)
subject: Mathematical Physics (math-ph)
subject: FOS: Mathematics
subject: FOS: Physical sciences
subject: 37D50, 37A25

description: We study a class of geometric Lorenz flows, introduced independently by Afraimovic, Bykov & Sil'nikov and by Guckenheimer & Williams, and give a verifiable condition for such flows to be mixing. As a consequence, we show that the classical Lorenz attractor is mixing.
Evaluation of antidiabetic activity of Garcinia lanceifolia Roxb. - A rare and endemic plant of Assam
Creators: name: Bora, Nilutpal Sharma
name: Bibhuti Bhusan Kakoti
name: Gogoi, Barnali
Publisher: name: figshare
Year: 2020
Subjects: subject: 111599 Pharmacology and Pharmaceutical Sciences not elsewhere classified
subject: FOS: Clinical medicine
subject: 111504 Pharmaceutical Sciences

description: Rapid urbanization and westernization along with the lifestyle changes has attributed to the increase in the occurrence and prevalence of diabetes mellitus (DM). Garcinia lanceifolia Roxb. is a truly rare and endemic, important medicinal plant of Assam which is considered to be containing much medicinal value and is eaten raw or made into pickles by the local people. Locally it is known as “Rupahi-thekera” in Assamese. It has been used by various ethnic communities of Northeast India to treat various disorders like dysentery, dyspepsia, and biliousness. Our present study has been focused on the evaluation of the antidiabetic activity of the methanolic extract of the bark of Garcinia lanceifolia in streptozotocin-induced diabetic rats. The dried powder extracts were successively extracted with solvents of varying polarity starting from petroleum ether to methanol. Wistar male albino rats were used for the present study. The antihyperglycemic activity of the crude methanolic extracts of Garcinia lanceifolia bark was studied in streptozotocin-induced diabetic rats. The toxicity study results showed that the plant extract had no adverse effect. On a fifteen day administration of the methanolic extract of the bark of Garcinia lanceifolia there occurs a fall in fasting blood sugar of the diabetes induced rats. The results indicated that the antidiabetic potential of G. lanciefolia is very potent and is comparable to the standard Metformin.