Zero truncated Poisson integer-valued AR(1) model

In this paper, we introduce a new stationary integer-valued autoregressive process of the first order with zero truncated Poisson marginal distribution. We consider some properties of this process, such as autocorrelations, spectral density and multi-step ahead conditional expectation, variance and probability generating function. Stationary solution and its uniqueness are obtained with a discussion to strict stationarity and ergodicity of such process. We estimate the unknown parameters by using conditional least squares estimation, nonparametric estimation and maximum likelihood estimation. The asymptotic properties and asymptotic distributions of the conditional least squares estimators have been investigated. Some numerical results of the estimators are presented and some sample paths of the process are illustrated. Some possible applications of the introduced model are discussed.     

On the determinants of SME capital structure in Central and Eastern Europe: A dynamic panel analysis

The purpose of this paper is to test how firm characteristics affect SMEs’ capital structure using a unique dataset of micro, small, and medium-sized firms (SMEs) in Central and Eastern Europe (CEE). We carry out a panel data analysis of 3175 SMEs from seven CEE countries during the period 2001–2005, modeling the leverage ratio as a function of firm specific characteristics hypothesized by capital structure theory. By using the cash flow as an explanatory variable, we test some of the predictions of the pecking order theory. According to this theory, firms with more available internal funds should use less external funding. We do find strong evidence in favor of the pecking order theory, given that there is a negative and significant correlation between profitability and leverage. When we control for other firm specific characteristics such as future growth opportunities, liquidity, sales growth, size and assets structure, the cash flow is found to be a strong determinant of firm leverage. We also argue that the determinants of firm leverage may be considerably different depending on firms’ size and age. The empirical results show that cash flow coefficient remains negative and statistically significant only for medium-sized firms, thus suggesting that larger firms with sufficient internal funds use less external funding than comparable smaller firms. We obtain similar results when we estimate the model by firm age; older firms demonstrate similar behavior as larger firms.     

On the formal definition of the systems’ interoperability capability: an anthropomorphic approach

The extended view of enterprise information systems in the Internet of Things (IoT) introduces additional complexity to the interoperability problems. In response to this, the problem of systems’ interoperability is revisited by taking into the account the different aspects of philosophy, psychology, linguistics and artificial intelligence, namely by analysing the potential analogies between the processes of human and system communication. Then, the capability to interoperate as a property of the system, is defined as a complex ability to seamlessly sense and perceive a stimulus from its environment (assumingly, a message from any other system), make an informed decision about this perception and consequently, articulate a meaningful and useful action or response, based on this decision. Although this capability is defined on the basis of the existing interoperability theories, the proposed approach to its definition excludes the assumption on the awareness of co-existence of two interoperating systems. Thus, it establishes the links between the research of interoperability of systems and intelligent software agents, as one of the systems’ digital identities.     

Ownership and corporate wage policy: the signal and its strength

We argue that identification and proper specification of ownership links among firms is an important factor and is affecting firm performance on different dimensions. We focus on the corporate wage policy, where we show that firms with same stockholders have similar average labour costs after controlling for standard factors of the wage equation. Moreover, we propose new measures of stockholders’ ability to influence firms’ decision; signal and its strength. The signal measures stockholder’s preferences over a given corporate policy, while the strength function describes stockholder’s ability to influence a firms’ corporate policy.     

The transition from ‘socialist’ agriculture to the common agricultural policy: the case of Slovenia

This article describes the changes in Slovenian agricultural policy in the period 1993–2001 in light of Slovenia's anticipated accession to the European Union. Agriculture in Slovenia is characterised by relatively unfavourable natural and structural conditions, which also explains its status as a net food importer and its relatively protectionist agricultural policy. The period of transition was also a period of thorough restructuring of agricultural policy, which was gradually brought into line with the goals and mechanisms of the Common Agricultural Policy (CAP). Even before accession Slovenia started to implement CAP-like measures, including direct payments and rural development policy measures. Slovenia is thus the only candidate country for EU accession with a level of support for agriculture comparable with that in the European Union. In its negotiations for EU membership, Slovenia agreed on the same level of direct payments for Slovenian farmers as received by farmers in the European Union, except that in the first period they will be largely covered from the national budget. As a result of the outcome of negotiations, the economic position of Slovenian farmers after accession is not expected to change markedly on the aggregate level, particularly if all the necessary steps are taken with regard to the building of an efficient system for the transposition of the CAP. Accession to the EU will, however, not solve the problem of relatively poor compeititiveness of the agricultural sector in Slovenia, which still has to undergo comprehensive structural changes and adjustments.     

Production Structure in the Context of International Trade

This paper deals with the recent empirical phenomenon of intra-industry trade, i.e., trade in similar goods between similar countries. It treats this phenomenon from the point of view of the theory of the structure of production, highlighting the importance of the sequential nature of production and the heterogeneity and specificity of factors of production, as developed by Carl Menger, Eugen von Böhm-Bawerk and their followers of the Austrian School of economics. The reader is first exposed to the historical development of production and capital theory. A simple theory of production structure, along the lines of Austrian economics, is afterwards presented and a useful tool for the analysis of intra-industry trade is developed. In the following discussion of existing theories of intra-industry trade, we make the case for vertical intra-industry specialization, complex manufactured goods and sliced-up production chains across countries. The reader immediately observes the importance of Austrian production structure theory for the analysis of intra-industry trade. We accordingly apply the concepts of the structure of production to intra-industry trade and analyze, in particular, the time- and place-aspects of international production. The concluding section shows the relevance of our approach to intra-industry trade for the analysis of business cycle synchronization across countries, and for the optimum currency areas theory.     

Simulation Monte Carlo methods in extended stochastic volatility models

A new technique for nonlinear state and parameter estimation of discrete time stochastic volatility models is developed. Algorithms of Gibbs sampler and simulation filters are used to construct a simulation tool that reflects both inherent model variability and parameter uncertainty. The proposed chain converges to equilibrium enabling the estimation of unobserved volatilities and unknown model parameter distributions. The estimation algorithm is illustrated using numerical examples. Copyright © 2002 John Wiley & Sons, Ltd.     

Land rents as a criterion for regionalization—The case of wheat growing in Croatia

The paper explores and tests one of the contemporary principles of economic regionalization of agriculture by using differential land rents in wheat production as a model. The analysis is based upon the assumption that differential rents could serve as a valid principle for regional planning, particularly differential rent I. On the basis of the food self-sufficiency principle declared by the Rome Declaration on World Food Security, the model assesses the economic justification of the Croatian wheat incentives system in relation to wheat production potentials in the counties, starting from those with high potential (the most favourable agroecological conditions for wheat production) towards the counties with low potential, to the level of self-sufficiency as a long-term Croatian strategic vision.The model shows that Croatia can meet its requirements for industrial wheat processing at the level of cumulative farmland areas of three counties, while total consumption can be covered by production of eight counties. This model compromises the fundamental principle of regional economics of wheat production, because up to 2003 incentives were given for 78,000 ha more than what was economically justified for wheat production intended for industrial processing, i.e. for 19,000 ha for total wheat demand. But, wheat production is practised all over Croatia—in all agricultural regions because of tradition on the one side and crop rotation requirements on the other side. This conclusion points to an uneconomic allocation of budget funds for wheat incentives to the counties, whose output results do not justify the incentives. The current subsidy model stimulates production by applying the criterion of a minimum three-hectare area required for wheat incentives. Consequently, a part of wheat production is excluded from the incentive system in the counties with high potential farmland, i.e. in the counties collecting a differential land rent for wheat production, which is uneconomical in terms of macroeconomics.Even though the model featured in this paper exemplifies wheat production in this particular situation, it can be easily used to evaluate the efficiency of incentives for all the crops included in the incentive system, while applying the standards of economics and agricultural regionalization. It can also be used to determine subsequent, more economical distribution of production incentives by channelling uneconomically allocated budget funds into implementation of other agricultural policies and measures.