We present the generalized hybrid averaging (GHA) operator. It is a new aggregation operator that generalizes the hybrid averaging (HA) operator by using the generalized mean. Thus, we are able to generalize a wide range of mean operators such as the HA, the hybrid geometric averaging (HGA), the...

Hierarchical aggregation/disaggregation of time series in order to make forecasts is a frequent challenge in business and econometric scenarios. This work presents a novel approach for selecting an adequate time series disaggregation level as a starting point for making forecasts. The...

We report the result of experiments designed to assess the effect of initial endowments on willingness to pay values elicited from multi-unit Vickrey auctions. Comparing bids from an “endow and upgrade” approach with the “full bidding” approach, we find that the direction of the...

Within the area of Behavioral game theory, we focus on a specific context, namely, on a game we called the Alternative traveler’s dilemma. In this context, we observe that participants tend to choose strictly dominated strategies. In order to explain similar tendencies in other games,...

Article refers to the issue of credit risk management in commercial banks. Particular attention is paid to the problem of stress testing. In addition, methods are presented that allow prediction of the losses of the portfolio in the context of extreme events relating to the crises of financial...

The present economic and financial crisis has underlined the importance to financial institutions and investors of having access to efficient methods of quantifying credit risk, or the probability of default. The logit models are among the techniques commonly used by large organizations and...

We model an urban labour market in a developing economy, incorporating workers’ risk attitudes. Trade-offs between risk aversion and ability determine worker allocation across formal and informal wage employment, and voluntary and involuntary self employment. Greater risk of informal wage...

In present study, we contribute to the discussion on international stock market correlations, by analyzing interdependencies between stock returns in US and Israeli stock exchanges. In particular, we concentrate on the original feature of Tel Aviv Stock Exchange (TASE) where the trading week...

This study examined the relationship between share prices and dividends, earnings and book values for companies listed on the Nairobi Securities Exchange (NSE) in Kenya for the six years period between 2005 and 2010. Using panel data analysis the study found evidence that there is a positive and...

Die von wirtschaftlichen Umbrüchen geprägten Jahre nach der Wiedervereinigung waren für viele Ostdeutsche mit zunehmender Unsicherheit verbunden, während die Veränderungen in Westdeutschland weitaus weniger gravierend waren. In der Folge kam es in den 90er Jahren zu einem massiven Rückgang...