1,804,126 research outputs found

    Capital Budgeting

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    This book presents a coverage of the major topical areas in financial decision-making, with particular reference to the firm's choice of which investments to make, both for basic-level MBA students and as an in-depth reference textbook for more advanced courses. It merges the suitable features of the Berk-De Marzo textbook on Corporate Finance (from which several chapters are derived, together with the pedagogical approach adopted in writing the added chapters) with some more in-depth analyses on topics totally omitted or only briefly explained in a standard capital budgeting textbook, such as the following: a) tools for analyzing the uncertainty of the investment's cash flows (e.g. sensitivity analysis and simulation models), by adopting a more appropriate probabilistic approach b) tools for incorporating in the investment project's value the value of the decision's flexibility after its implementation, such as, for example, the decision-tree analysis and the real-options approach c) tools for considering the rationing of capital or other inputs: for example, linear programming and the post-optimum analysis by means of the dual problem solution d) the effects of the financial policies on the measurement of the cost of capital, and the appropriate formulations for different debt policies. The book carefully balances the latest advancements in research and practice with a thorough coverage of core capital budgeting topics

    ABC votaciones del 13 de marzo de 2022

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    ¿Sabe por quién votar este 13 de marzo? En este episodio le explicamos cómo funcionan las elecciones al Congreso de la República, qué son las consultas interpartidista para elegir candidatos presidenciales, quiénes puedes ser elegidos como jurados de votación y otros tips para ejercer su derecho al voto en las próximas elecciones

    Effect of spatial correlations on Hopfield Neural Network and Dense Associative Memories

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    Hopfield model is one of the few neural networks for which analytical results can be obtained. However, most of them are derived under the assumption of random uncorrelated patterns, while in real life applications data to be stored show non-trivial correlations. In the present paper we study how the retrieval capability of the Hopfield network at null temperature is affected by spatial correlations in the data we feed to it. In particular, we use as patterns to be stored the configurations of a linear Ising model at inverse temperature β\beta. Exploiting the signal to noise technique we obtain a phase diagram in the load of the Hopfield network and the Ising temperature where a fuzzy phase and a retrieval region can be observed. Remarkably, as the spatial correlation inside patterns is increased, the critical load of the Hopfield network diminishes, a result also confirmed by numerical simulations. The analysis is then generalized to Dense Associative Memories with arbitrary odd-body interactions, for which we obtain analogous results

    Going Beyond Counting First Authors in Author Co-citation Analysis

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    The 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

    Struttura delle «aree sensoriali» antennali di alcuni Bostrichidi (Coleoptera)

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    Most species of Bostrychidae exhibit specialized sensory organs which consist in dense groups of basiconic sensilla on each segment of their antennal club. These sensory organs cover either flat or concave surfaces. Observations have been carried out, in order to assess structural details on the antennal clubs of the following species: Bostrychus capucinus L., Lichenophanes varius Illig., Amphicerus bimaculatus (Ol.), Xylonites retusus (Ol.), Xylonites praeustus Germ., Scobicia chevrieri Villa, Sinoxylon sexdentatum (Ol.), Sinoxylon perforans Schr. Three different arrangements of sensilla have been observed: l) flat fields; 2) longitudinal grooves; 3) subspherical pits. The borders of the flat fields are either entirely or partially contoured. Both flat fields of certain species and the subspherical pits are concealed beneath a group of layered marginal setae. No sex dimorphism was found. The sensory areas occupy both faces of each antennal segment.They are usually two on each face, although their number may be higher in some species. With regard to the phylogenesis of these structures, it is suspected that both the longitudinal grooves and the subspherical pits originate from the flat fields by way of two separate evolutionary trends. Subsequently, they were masked by the marginal setae. Possibly, Bostrychidae use these organs to search for their host-plants

    Legislatore e licenza d'illecito

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    Il Consiglio di Stato ribadisce l'immunità del legislatore da ogni forma di responsabilità che non consegua al mancato rispetto delle indicazione contenute in una direttiva eurounitaria. Nel presupposto, sottiolineano i giudici amministrativi, che la scelta legislativa debba essere libera per definizione. Ma così non è quando la discrezionalità del legislatore sia condizionata: e, allora, che il solco obbligato sia quello di una direttiva o di una legge delega non sembra fare differenza

    Dettagli strutturali dei chemiorecettori antennali in Carpophilus hemipterus (L.) e C.humeralis (F.) (Coleoptera, Nitidulidae)

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    As other species of Nitidulidae, adults of both sexes of Carpophilus humeralis (F.) and C. hemipterus (L.) exhibit two particular receptors in each antenna, respectively in the 10th and 11th segments. Study by light-microscope, TEM and SEM gives data as follows: i) Presence and shape of both receptors do not exhibit sex dimorphism. ii) The receptor of the 11th segment is flask-like and opens through a very small pore (nearly 10 μm in diameter) on that segment face which is oriented downwards when the insect walks; it bears a number of transversal crests along its internai walls. iii) The receptor of the 10th segment is a largely opened pit of the intersegmental face; it is deeper, partly vesicle-like, in C. humeralis. iv) Both receptors include a few basiconic sensilla of the type MPG-conoid, sensu Zacharuk (1980). v) No inlet of glandular cells was found in them. Observations show a trend to both confining of the elementary sensilla and redundance of receptors, which are difficult to rel:lte to any function, due to the lack of behavioral knowledge
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