Showing 1 - 10 of 125
We propose an optimal control problem to model the dynamics of the communication activity of a firm with the aim of maximizing its efficiency. We assume that the advertising effort undertaken by the firm contributes to increase the firm's goodwill and that the goodwill affects the firm's sales....
Persistent link: https://www.econbiz.de/10005756578
This paper tackles the problem of the presence of negative average rates of returns in the evaluation of the performance of mutual funds using a DEA approach. We present some extensions of DEA models for the evaluation of the performance of mutual funds that enable to compute the performance...
Persistent link: https://www.econbiz.de/10005756579
The main aims of this contribution are first to analyse the ethical level of European socially responsible investment (SRI) funds, secondly to measure the overall performance of the European SRI mutual funds with an appropriate data envelopment analysis (DEA) model and, finally, to investigate...
Persistent link: https://www.econbiz.de/10008678244
In this paper we analyze the problem of measuring the advertising efficiency of the Leading US Advertisers during the period 2001-2006. We use the DEA (Data Envelopment Analysis) approach that enables to evaluate the relative efficiency in case of multiple inputs and outputs. In particular, the...
Persistent link: https://www.econbiz.de/10005566308
In this paper we conjugate the operative usability of the net present value with the capability of the fuzzy and the interval approaches to manage uncertainty. Our fuzzy interval net present value can be interpreted, besides the usual present value of an investment project, as the present value...
Persistent link: https://www.econbiz.de/10005756573
Comovements among asset prices have received a lot of attention for several reasons. For example, comovements are important in cross-hedging and cross-speculation; they determine capital allocation both domestically and in international meanÐvariance portfolios and also, they are useful in...
Persistent link: https://www.econbiz.de/10005076136
We propose a new necessary and sufficient condition to test whether a sequence is Benford (base-b) or not and apply this characterization to some kinds of sequences (re)obtaining some well known results, as the fact that the sequence of powers of 2 is Benford (base-10).
Persistent link: https://www.econbiz.de/10005076142
In this paper we propose a financial trading system whose trading strategy is developed by means of an artificial neural network approach based on a learning algorithm of recurrent reinforcement type. In general terms, this kind of approach consists: first, in directly specifying a trading...
Persistent link: https://www.econbiz.de/10005076145
The measurement of the quality of research has reached nowadays an increasing interest not only for scientific reasons but also for the critical problem of researchers' ranking, due to the lack of grant assignments. The most commonly used approach is based on the so-called $h$-index, even if the...
Persistent link: https://www.econbiz.de/10013113992
In this paper we use an evolutionary approach in order to infer the values of the parameters (weights of criteria, preference, indifference and veto thresholds) for developing the multicriteria method MURAME. According to the logic of preference disaggregation, the problem consists in finding...
Persistent link: https://www.econbiz.de/10013106973