1,365,660 research outputs found
Primeros cuidados a los heridos : (modo de transportarlos y de hacerles la cura de urgencia)
No full textElectronic and optical properties of pure and modified diamondoids studied by many-body perturbation theory and time-dependent density functional theory
No full textDiamondoids are small diamond nanoparticles (NPs) that are built up from diamond cages. Unlike usual semiconductor NPs, their atomic structure is exactly known, thus they are ideal test-beds for benchmarking quantum chemical calculations. Their usage in spintronics and bioimaging applications requires a detailed knowledge of their electronic structure and optical properties. In this paper, we apply density functional theory (DFT) based methods to understand the electronic and optical properties of a few selected pure and modified diamondoids for which accurate experimental data exist. In particular, we use many-body perturbation theory methods, in the G0W0 and G0W0+BSE approximations, and time-dependent DFT in the adiabatic local density approximation. We find large quasiparticle gap corrections that can exceed thrice the DFT gap. The electron-hole binding energy can be as large as 4 eV but it is considerably smaller than the GW corrections and thus G0W0+BSE optical gaps are about 50% larger than the Kohn-Sham (KS) DFT gaps. We find significant differences between KS time-dependent DFT and GW+BSE optical spectra on the selected diamondoids. The calculated G0W0 quasiparticle levels agree well with the corresponding experimental vertical ionization energies. We show that nuclei dynamics in the ionization process can be significant and its contribution may reach about 0.5 eV in the adiabatic ionization energies
Endogenous growth and poverty traps in a Cournotian model. (En numéro spécial: Complémentarités stratégiques et défauts de coordination)
No full textWe analyze the implications for the dynamics of capital accumulation of market power and endogenous demand elasticities, in an environment in which the latter are affected by the number of competitors in each industry. In equilibrium the interest rate increases as capital accumulates, even though the marginal product of capital is constant. Under standard assumptions two steady states and a balanced growth path exist, and the possibility of multiple equilibrium paths (for given initial conditions) arises. The latter feature is argued to match several empirical observations.RÉSUMÉ – On analyse les implications pour la dynamique d’accumulation du capital de variations endogènes du pouvoir de marché, dans un environnement ou l’élasticité de la demande dépend du nombre d’entreprises présentes dans secteur. À l’équilibre, le taux l'intérêt croît au fur et à mesure que le capital s’accumule, bien que le produit marginal du capital soit constant. Sous des hypothèses standards, il existe deux états stationnaires ainsi qu’un chemin de croissance équilibrée; à conditions initiales données, une multiplicité de chemins d’équilibre peuvent exister. Cette dernière caractéristique s’accorde avec plusieurs observations empiriques
Optimal Monetary Policy in Closed versus Open Economies: An Integrated Approach
No full textThis paper develops a new open economy macro model of optimal monetary for a small open economy. Our main result is that in this model, the optimal policy problem for the small open economy is isomorphic to the closed economy case studied in Clarida, Gali, Gertler (1999). In particular, the optimal policy can be implemented with a Taylor Rule under which the domestic interest rate adjusts to the equilibrium real interest rate and expected inflation in domestic prices.
Presentació dels materials del GALI
No full textPresentació dels materials creats per el Gabinet d'Assessorament Lingüístic per a la Immigració (GALI) a partir de la seva pàgina web, a càrrec de Mònica Barrieras4255.mp4
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Impact of Operational Constraints on Quality and Productivity of Handloom Products
No full textAbstract: The handloom industry is India’s largest cottage industry representing and preserving the vibrant and beautiful Indian culture and traditions. Indian artists are now known worldwide for their spinning weaving and hand-printing techniques. The handicraft industry is the second-largest source of employment in the country after agriculture. It employs 12.5 million people and is the largest supplier to rural businesses outside of agriculture. The success or failure of the handloom industry largely depend on the quality in this competitive world. The quality and the quantity of the handloom products purely derive from operational constraints which were adopted. The present study aimed to identify the impact of operational constraints like raw material availability, credit facility, functioning, and welfare constraints on the quality and productivity of handlooms in the Kadapa district. The data were collected from a total of 120 weaver entrepreneurs operating in different locations of the Kadapa district. A stratified random sampling technique has been adopted for the sample responses collection. Suitable tools like multivariate multiple regression with structural analysis were carried out to analyze and interpret the data. The study results revealed that all the four operational constraints like raw material availability, credit facility, functioning, and welfare constraints were positively and significantly influencing the quality of the handloom products. These operational constraints also influence the productivity of handlooms positively and significantly. A total of eight hypotheses were formulated with the support of the literature and all are supported. The raw material was found as an important predictor of the quality and productivity of the handloom products as it captured the maximum level of influence than other parameters.Published By:
Blue Eyes Intelligence Engineering
& Sciences Publication (BEIESP)
© Copyright: All rights reserve
Going Beyond Counting First Authors in Author Co-citation Analysis
No full textThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Variations on the Author
No full text“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
Appropriate Similarity Measures for Author Cocitation Analysis
No full textWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
Effect of boundary condition assumptions on hospitals energy performance and certification: comparison between dynamic energy simulation and turkish energy certification method for a case study building
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