We provide an analytical approach that facilitates understanding the bifurcation mechanism of a wide class of economic models involving spatial agglomeration of economic activities. The proposed method overcomes the limitations of the Turing (1952) approach that has been used to analyze the...

This study investigates multiple changes in persistence in the dividend–price and price–earnings ratio of the NASDAQ Composite Index. Recent time series methods that are capable of signalling and dating asset price bubbles are employed, in particular the method developed by Leybourne, Kim,...

The Prosperity pillar of the 2030 Agenda for Sustainable Development calls for an integrated approach based on boosting productivity through diversification, upgrading technology and innovation, and increasing employment and entrepreneurship. Thailand needs to address all these challenges to...

Both the current economic situation and the short-term growth outlook of virtually all countries in transition are better than at any time during the last decade. Driven by higher import demand from the EU, the Central and East European countries are enjoying an export boom which fuels their GDP...

The state of the labour market in Bulgaria is analyzed from the viewpoint of the basic criteria for integration with the EU and the requirements for equality in positioning of the countries. Areas of problems are drawn such as sustained unequilibrium between supply and demand of labour, low...

The situation of labour market in Bulgaria has been analyzed in the light of the basic criteria for EU accession and the requirements for equal position of the countries. Problem areas like sustainable disequilibrium between labour demand and supply, low labour activity, ineffective employment...

We describe an efficient method for estimating enterprise input-output tables for cases when only information on marginal totals is available. In order to estimate the production structure of enterprises, we utilize engineering knowledge to construct a qualitative prior containing 1 wherever an...

Replicating portfolios have recently emerged as an important tool in the life insurance industry, used for the valuation of companies' liabilities. This paper presents a replicating portfolio (RP) model for approximating life insurance liabilities as closely as possible. We minimize the L1 error...

Judgment (or logical) aggregation theory is logically more powerful than social choice theory and has been put to use to recover some classic results of this field. Whether it could also enrich it with genuinely new results is still controversial. To support a positive answer, we prove a social...

A classic paper of Borwein/Lewis (1991) studies optimisation problems over L^p_+ with finitely many linear equality constraints, given by scalar products with functions from L^q. One key result shows that if some x in L^p_+ satisfies the constraints and if the constraint functions are...