Mixed systems with minimal and maximal lifetime variances

We consider the mixed systems composed of a fixed number of components whose lifetimes are i.i.d. with a known distribution which has a positive and finite variance. We show that a certain of the k-out-of-n systems has the minimal lifetime variance, and the maximal one is attained by a mixture of series and parallel systems. The number of the k-out-of-n system, and the probability weights of the mixture depend on the first two moments of order statistics of the parent distribution of the component lifetimes. We also show methods of calculating extreme system lifetime variances under various restrictions on the system lifetime expectations, and vice versa.     

An empirical investigation of customer satisfaction and loyalty across two divergent bank segments

Customer satisfaction is an important indicator for customer loyalty, and numerous studies have identified the benefits that customer loyalty delivers to an organisation. Nevertheless, research also suggests that satisfied customers still defect. This study investigated the relationship between customer satisfaction and loyalty intentions within the Australian banking industry for two distinct customer segments, retirees and university students. Results indicate no significant difference in the satisfaction levels of either group; however, there were differences with respect to two of the five behavioural intentions dimensions: loyalty and switch. Satisfaction was found to have a significant impact on three of the five behavioural intentions dimensions: loyalty, pay more and external response, suggesting that management should initiate service policies aimed at securing improvements in customer satisfaction. However, there are also other constructs at work aside from satisfaction in determining future behavioural intentions.     

Whose feedback matters? Empirical evidence from online auctions

The seller rating systems based on feedback are routinely used to minimize risks in online auctions. We explore the effects of the feedback from buyers and sellers separately. The results reveal that feedback from auction issuer’s selling activity increase both sales and new visits of auction. The effects of feedback from buying activity are significant only for visits.     

Evaluating corruption under the application of the SOCIO-economic development desgrowth index (Ð-index): the case of Guatemala

Getting a clear sense of the intensity and dynamics of corruption in a society or country is a critical platform for economic growth and development. This paper sets out to bring clarity to the study of corruption through an alternative approach. It examines and demonstrates how corruption can be evaluated by basically hinging it on the socio-economic development deaccumulation that any country can experience in different historical periods. The paper presents the socio-economic development desgrowth index (Ð-index), a new indicator with a complete set of mathematical tools that capture and calculate all the aspects that encompass corruption within a system or country. The paper successfully applied the (Ð-index) to X-ray the successive administrations of Guatemala from 1986 to year 2016 from where we convincingly observed the highs and lows in the corruption dynamics of Guatemala.     

Does the foreign sector help forecast domestic variables in DSGE models?

This paper evaluates the forecasting performances of several small open-economy DSGE models relative to a closed-economy benchmark using a long span of data for Australia, Canada and the United Kingdom. We find that opening the model economy usually does not improve the quality of point and density forecasts for key domestic variables, and can even cause it to deteriorate. We show that this result can be attributed largely to an increase in the forecast error due to the more sophisticated structure of the extended setup, which is not compensated for by a better model specification. This claim is based on a Monte Carlo experiment in which an open-economy model fails to beat its closed-economy benchmark consistently even if the former is the true data generating process.     

The Investment Development Path: Evidence from Poland and Other Countries of the Visegrád Group

This article discusses Polish foreign direct investment against that of the other Central and Eastern European countries belonging to the so-called Visegrád Group. The article is a continuation of this author’s previous work, now revised and taking into account a longer perspective of the analysis, theoretical recommendations modifying and widening the scope of the Investment Development Path model, the results of analytical studies published by other authors as well as the results of two research projects conducted by a Nicolaus Copernicus University team between 2006–2009 and 2010–2013. This article’s fundamental aim is to define the current stage of Poland’s economic development according to the Investment Development Path trajectory. The author concludes that Poland is in its third stage of development according to the Investment Development Path model, although still in an early phase of that stage.     

Poland’s uninterrupted growth performance: new growth accounting evidence

Since 1992 Poland has experienced an exceptionally long spell of output growth that was not interrupted even by the global economic crisis. Using a growth accounting exercise based on new estimates of flows of capital and labour services in the Polish economy during the period 1996–2013, we study the structure of this growth, highlighting the key role of certain supply-side factors. Most notably, unlike other European countries, the Polish economy recorded both a marked increase in capital deepening, a big improvement in workforce composition (driven mostly by educational attainment), and an uninterrupted process of productivity convergence. We also comment on the supply-side factors which contributed to Poland’s relative resilience to the global economic crisis of 2007–2010.     

Applying destination attribute segmentation to health tourists: A case study of Polish spa resorts

The present research presents an effective segmentation of visitors to Polish spa resorts and thereby provides useful insights contributing to the understanding of the attributes determining the perceived spa resort’s image and nature of the delineated segments. The research is based on the findings from a self-administered questionnaire, an instrument consisting of 11 pull-motivational items, developed and used in a survey of 2050 Polish spa resort visitors. Based on destination attributes and relevant socio-demographic characteristics, a clustering method identified three distinct segments of visitors to Polish spa resorts.

Abbreviations: ANOVA: analysis of variance; NFZ: National Health Fund, ZUS Polish Social Insurance Institution; PCA: principal component analysis; WHO: World Health Organization     

Structural heterogeneity or asymmetric shocks? Poland and the euro area through the lens of a two-country DSGE model

This paper presents a two-country model linking Poland and the euro area and applies it for assessment of heterogeneity across these two regions. Overall, our results can be seen as rather inconclusive about the differences in parameters describing agents' decision-making in Poland and in the euro area. On the contrary, we find strong evidence for heterogeneity in terms of volatility and synchronization of shocks hitting both economies. Our results may be viewed as a step towards estimating the costs of Poland's entry to the European Monetary Union, associated with giving up the monetary autonomy and losing benefits from stabilizing movements of the exchange rate.