Tourism specialization and environmental sustainability in a dynamic economy

This study focuses on the dynamic behaviour of a small open economy specialized in tourism based on natural resources when tourist services are supplied to foreign tourists who are crowding-averse and care for the environment. We analyse the steady-state properties of the model and a unique locally saddle-point equilibrium is found for both the market and the central planner solution. Then we compare the effects of two policies aiming at improving the market solution: in the first the government poses a corective tax on residents'income and then redistributes the tax gains with lump-sum transfers while, in the second, the government taxes residents'income and employs the tax gains in pollution abatement technology. We find that the first policy is able to direct the economy towards its first-best dynamic path but the second policy, by relaxing the dynamic constraint on the environment, yields a higher steady-state utility when the externality effects and/or the natural regeneration rate of the environmental asset are low enough. Both policies, insofar they lead to an increase in tourists' willingness to pay, might work as an "implicit" tourist tax paid by tourists, with the difference that the first policy always leads to to this result, while the second obtains it only when tourists' aversion to crowding is not too high

Tourism Specialization and Sustainability: A Long-Run Policy Analysis

This study focuses on the dynamic evolution of a small open economy specialized in tourism based on natural resources when tourist services are supplied to foreign tourists who are crowding-averse and give positive value to the environmental quality. We analyse the steady-state properties and run several policy exercises in two versions of our model: in the first, private agents’ income is spent entirely on consumption while, in the second, agents are allowed to invest part of their income in pollution abatement technology (PAT) which artificially increases the rate of regeneration of the environmental asset. A unique locally saddle point equilibrium is found in both versions and for both the market and the centralized solution. Our main findings are that: 1) a corrective income tax raises steady state utility in both versions but is capable of leading the economy in its first-best dynamic path only when agents cannot invest in the PAT; 2) when the PAT is available to the government but not to agents, an income tax which finances abatement expenditures may increase steady state utility with respect to the market solution when the natural regeneration rate of the environment and the degree of crowding-aversion are both low enough; 3) when PAT is available, the market chooses to devote a higher fraction of income to abatement than the central planner but in both cases this fraction is positive only if the natural rate of regeneration is not too large; 4) when PAT is available an income pollution tax does not affect the dynamic path of the market economy.Tourism specialization, Sustainability, Environmental quality, Crowding, Pollution abatement

Network communities within and across borders

We investigate the impact of borders on the topology of spatially embedded networks. Indeed territorial subdivisions and geographical borders significantly hamper the geographical span of networks thus playing a key role in the formation of network communities. This is especially important in scientific and technological policy-making, highlighting the interplay between pressure for the internationalization to lead towards a global innovation system and the administrative borders imposed by the national and regional institutions. In this study we introduce an outreach index to quantify the impact of borders on the community structure and apply it to the case of the European and US patent co-inventors networks. We find that (a) the US connectivity decays as a power of distance, whereas we observe a faster exponential decay for Europe; (b) European network communities essentially correspond to nations and contiguous regions while US communities span multiple states across the whole country without any characteristic geographic scale. We confirm our findings by means of a set of simulations aimed at exploring the relationship between different patterns of cross-border community structures and the outreach index.Comment: Scientific Reports 4, 201

Agglomeration and growth with endogenous expenditure shares

We develop a New Economic Geography and Growth model which, by using a CES utility function in the second-stage optimization problem, allows for expenditure shares in industrial goods to be endogenously de- termined. The implications of our generalization are quite relevant. In particular, we obtain the following novel results: 1) catastrophic agglom- eration may always take place, whatever the degree of market integration, provided that the traditional and the industrial goods are su¢ ciently good substitutes; 2) the regional rate of growth is a¤ected by the interregional allocation of economic activities even in the absence of localized spillovers, so that geography always matters for growth and 3) the regional rate of growth is a¤ected by the degree of market openness: in particular, depend- ing on whether the traditional and the industrial goods are good or poor substitutes, economic integration may be respectively growth-enhancing or growth-detrimental

Do we need more time for leisure?

”We need more time: more time for leisure” Linton Kwesi Jonhson used to dub. Indeed, the analysis of an OLG economy with endogenous labor supply gives some rational to the dub poet’s claims. In our setting, the golden rule is defined as the pair of capital-labour ratio and individual labour supply which maximises the steady state utility of each generation. When, other things equal, agents are motivated to work more the higher the level of wages, individual labor supply will be increasing (decreasing) in capital labor ratio according to whether the elasticity of wages per unit of labour is bigger (smaller) than the relative change of the value of the fraction of labour income saved. Hence, if the economy is dynamically efficient, agents tend to work more than in the Golden Age if the propensity to save evaluated at the golden rule is, other things equal, relatively high. Conversely, under dynamic inefficiency, they work too much if and only if the propensity to save is relatively low. For given values of the parameters determining the propensity to save, individuals in dynamic efficient (inefficient) economies work more than in the Golden Age as long as the labour share of income is sufficiently high (low). These findings appear to be of some interest with reference to the 35 hours working-week debate in Europe

The role of gender in employment polarization

We document that U.S. employment polarization in the 1980-2008 period is largely generated by women. Female employment shares increase both at the bottom and at the top of the skill distribution, generating the typical U-shape polarization graph, while male employment shares decrease in a more similar fashion along the whole skill distribution. We show that a canonical model of skill-biased technological change augmented with a gender dimension, an endogenous market/home labor choice and a multi-sector environment accounts well for gender and overall employment polarization. The model also accounts for the absence of employment polarization during the 1960- 1980 period and broadly reproduces the different evolution of employment shares across decades during the 1980-2008 period. The faster growth of skill-biased technological change since the 1980s accounts for most of the employment polarization generated by the model

A note on employment and wage polarization in U.S.

We compare employment and wage polarization in the U.S. using different sample periods, occupations classification and the inclusion or not of agricultural occupations. We report two main findings. First, we show that employment polarization can emerge together or without wage polarization, depending on the sample period considered. Second, we show that removing agricultural occupations changes the timing of employment polarization, making it emerge earlier, and substantially increases the degree of both employment and wage polarization with respect to the case in which they are included in the sample

The role of gender in employment polarization

We document that employment polarization in the 1980-2008 period in the U.S. is largely generated by women. For the latter, employment shares increase both at the bottom and at the top of the skill distribution, generating the typical U-shape polarization graph, while for men employment shares decrease in a similar fashion along the whole skill distribution. We show that a canonical model of skill-biased technological change augmented with a gender dimension, an endogenous market/home labor choice and a multi-sector environment accounts well for gender and overall employment polarization. The model also accounts for the absence of employment polarization during the 1960-1980 period, which is due to the flat behavior of changes in women’s employment shares along the skill distribution, and can reproduce the different evolution of employment shares across decades during the 1980-2008 period. The faster growth of skill-biased technological change since the 1980s accounts for a substantial part of the employment polarization generated by the model