Search results for "Olio"
showing 10 items of 630 documents
Mango siciliano di IV gamma: come aumentarne la shelf life con l’uso di film edibili di origine naturale.
2021
Un nuovo edible coating, a base di olio di neem e gel di aloe, allunga la vita commerciale di frutti di mango in IV gamma senza alterarne il gusto
Dental treatment of Marfan syndrome. With regard to a case.
2010
Marfan syndrome is the most common dominant autosomic genetic disorder of the connective tissue. It has a reported incidence of 1 per each 5000 individuals without any distinction of gender or ethnicity. This pathology?s diagnosis is mainly based on physical characteristics, presenting three main different symptomatic charts: neonatal Marfan, infant Marfan and classical Marfan. The mayor characteristic of these patients consists of an exaggerated length of the upper and lower limbs, hyperlaxity, scoliosis, alterations in the cardiovascular and pulmonary systems and atypical bone overgrowth. The individual implied in the present investigation concerned to a 14 year old male patient presentin…
Learning and the Price Dynamics of a Double-Auction Financial Market with Portfolio Traders
2006
In this paper we study the dynamics of price adjustments in an artificial market where portfolio traders with bounded rationality and limited resources interact through a continuous, electronic open book. The present work extends the model developed in [? ] introducing endogenous target individual portfolio holdings. We model the agents’ order-flow investment decision as an optimal choice given individual characteristics and the available information. We depart from the standard asset pricing framework in two ways. First, we assume that investors have imperfect information about the returns distribution. In particular, we assume that agents hold arbitrary priors about securities’ returns, w…
The Dynamics of Quote Prices in an Artificial Financial Market with Learning Effects
2007
In this paper we study the evolution of bid and ask prices in an electronic financial market populated by portfolio traders who optimally choose their allocation strategy on the basis of their views about market conditions. Recently, a growing literature has investigated the consequences of learning about the returns process1. There has been an increasing interest in analyzing what are the implications of relaxing the assumption that agents hold correct expectations. In particular, it has been asked the fundamental question of understanding if typical asset-pricing anomalies (like returns predictability, and excess volatility) can be generated by a learning process about the underlying econ…
Minimising value-at-risk in a portfolio optimisation problem using a multi-objective genetic algorithm
2011
[EN] In this paper, we develop a general framework for market risk optimisation that focuses on VaR. The reason for this choice is the complexity and problems associated with risk return optimisation (non-convex and non-differential objective function). Our purpose is to obtain VaR efficient frontiers using a multi-objective genetic algorithm (GA) and to show the potential utility of the algorithm to obtain efficient portfolios when the risk measure does not allow calculating an optimal solution. Furthermore, we measure differences between VaR efficient frontiers and variance efficient frontiers in VaR-return space and we evaluate out-sample capacity of portfolios on both bullish and bearis…
Controlling risk through diversification in portfolio selection with non-historical information
2017
We deal with the portfolio selection problem for investors having information on the expected returns of the assets based not only on historical data. In the absence of a way of measuring the risk of non-historical information, the investor may try to adjust it through the consideration of a suitable set of diversification constraints. With this aim, we relate the concept of value of information (recently introduced by Kao and Steuer) to a qualitative subjective measure of the investor’s level of confidence in his/her non-historical information. As an illustration, we analyze the behavior of the proposed indicator in the Spanish IBEX35 index for risk, upper bound, semicontinuous variable an…
Toward an understanding of price wars: Their nature and how they erupt
2001
Abstract This paper aims to improve our understanding of the unique phenomenon of market competition, called price wars, as little is known about their nature and how they erupt. More precisely, we offer selected illustrations of the reality of price wars, identify key attributes of price wars, propose a definition of price wars, and offer a conceptual framework in which early warning signals (EWSs) of price wars are distilled and linked to the likelihood and the intensity of such wars. Also, initial empirical findings on some of the effects of price wars are offered, showing that price wars inflict substantial damage on the companies involved. Implications for researchers entail that numer…
Innovating across boundaries: A portfolio perspective on innovation partnerships of multinational corporations
2016
Abstract This paper examines how and under what conditions alliance portfolio diversity influences a firm's innovative performance, with special attention being given to potential performance differences between multinational corporations (MNCs) and domestic firms. Analyses of data from 1045 German firms, among which 598 MNCs, revealed an inverted U-shaped relationship between alliance portfolio diversity and MNCs’ innovative performance. Findings also indicate MNCs to be better positioned than their domestic counterparts with regards to translating alliance portfolio diversity into superior innovative performance. Importantly though, this only holds for MNCs equipped with strong internal R…
MARKET CORRELATION, MARKET RETURNS AND PORTFOLIO IMPLICATION
2012
In this paper we examine the market correlation and market returns from Romanian perspective. Market returns are higher in emerging markets than developed market returns, but form portfolio perspective it`s also important to evaluate how much correlations are changing in emerging markets. Our results are important in allocation of financial instruments in institutional portfolio management.
A Portfolio Problem with Uncertainty
2000
In this paper we present two models for cash flow matching with an uncertain level of payments at each due date. To solve the problem of minimising the initial investment we use the scenario method proposed by Dembo, and the robust optimisation method proposed by Mulvey et al. We unify these optimisation methods in a general co-ordinated model that guarantees a match under every scenario. This general model is also a multi-objective programming problem. We illustrate this methodology in a problem with several scenarios.