New approaches for overcoming the complexity of future buildings impacted by new energy constraints

In many European countries, building is an economical sector where it is possible to reduce significantly energy dependence and environmental impact. Ambitious objectives are required for 2020 future buildings: extremely low energy consumption, low carbon emission, etc. To reach these new goals, the existing design of buildings has to change.Buildings are complex systems occupied by humans interacting with their environment. Indeed, each building can be considered a unique set of elements in dynamic interaction, structured and goal-oriented. New drastic energy objectives increase the complexity of building systems. Levels of energy and environmental performance, never reached in the past, are required for future buildings.In this context, it appears that professional capabilities and existing practices are no longer adequate. The actors of the building sector have to face up to a growing complexity generated by new constraints. Usual theories and practices are under questionning.The aim of this paper is to provide an original and helpful approach to this new complexity of future buildings. This approach, based on concepts of complexity and transdisciplinarity, consists in a combination of structural, functional and transformation approaches, thus providing a tridimensional cognitive framework to plan future buildings in a dynamic way.     

Study of the effect of a Financial Transaction Tax on the corporate cost of capital

We study the impact of a Financial Transaction Tax (FTT or Tobin Tax) on the corporate cost of capital. We consider the results on the impact of transaction costs on implied volatility and then use the utility maximization of a market-maker and its asymptotic solution. The FTT impact on volatility, in highly liquid equity option markets, is within two decimals (‘the tick value’) and is insignificant. The volatility impact is considerable for illiquid option markets especially long-dated equity options, used for the hedging of credit default swaps (CDS). The credit spread increase is computed using a structural model, and amounts between 30 and 60 basis points (b.p). per annum, for 5–20 year maturities, and a volatility level of 30%. The impact decreases with the corporation leverage ratio. We calibrate from the CDS market the implied volatility for six European corporations and find an increase in spreads by up to 60%. For a corporation with a 343 b.p. 5-year CDS spread, the increase amounts to 174 b.p. On the basis of this sample, the impact we find is between 5 and 20 times higher than the one computed in the study of Lendvai et al. which has been used by European Union authorities to assess the impact on the cost of capital.     

How retailer money-back guarantees influence consumer preferences for retailer versus national brands

Retailers often use money-back guarantees to reduce consumer perceived risk about brand quality and to increase their market share. The effect of such guarantees on perceived product quality and ultimately preference and product choice depends on their perceived value and credibility, related to other extrinsic clues, such as price and brand. An analysis of an experimental design with a national sample of consumers shows that compared with a simple money-back guarantee, a double money-back guarantee does not further increase the relative preference for a retailer brand over a national brand. Furthermore, the size of the effect of a money-back guarantee is small, moderated by the effects of other information on product quality, such as the size of the price differential between retailer and national brands. Finally, the effect of a money-back guarantee differs, depending on the customer–retailer relationship: A retailer with high credibility can influence regular customers less by guarantees.     

The Political Economy of Social Security

We consider a two-period overlapping generations model in which individual voters differ by age and by productivity. In such a setting, a redistributive pay-as-you-go system is politically sustainable, even when the interest rate is higher than the rate of population growth. The workers with medium wages (not those with the lowest wages) and the retirees form a majority which votes for a positive level of social security. This level depends on the difference between the rates of population growth and interest as well as on the redistributiveness of the benefit rule.     

The impact of option introduction on the conditional return distribution of underlying securities

This paper combines several interesting econometric techniques to examine changes in the conditional return distribution of security returns following option introduction. An EGARCH model is used to characterize the return generating process. An intervention analysis is performed to determine whether the parameters of the EGARCH model shift following initial options listing. This paper finds that the conditional distribution of security returns is unaffected by option introduction. Estimation of a transfer function-noise model also shows that option introduction has no effect on conditional volatility.     

PRODUCE OR SPECULATE? ASSET BUBBLES,OCCUPATIONAL CHOICE,AND EFFICIENCY*

We study the effects of rational asset bubbles in an overlapping‐generations economy where asset trading requires specialized intermediaries and agents freely choose between working in the production or the financial sector. Frictions in the market for deposits create rents in the financial sector that affect agents’ occupational choices. When rents are large, the private gains associated with trading bubbles lead too many agents to become speculators, causing bubbles to lose their efficiency properties. Moreover, if speculation can be carried out by skilled labor only, then bubbles displace skilled workers away from the productive sector and raise income inequalities.     

A real option approach to the protection of a habitat dependent endangered species

We use a real option approach to determine when a social planner has to stop or resume logging in situations where an endangered species relies on forest habitat for its survival. Logging affects the stochastic process followed by the habitat of the endangered species, which disappears irreversibly if its habitat reaches a critical extinction level. As long as the endangered species is still in existence, the social planner manages logging in such a way as to balance the risk of extinction against the benefits from commercial wood exploitation. The model incorporates economic, ecological, and social features. It is solved analytically to characterize the optimal forest management rule. Then it is applied to the case of the Rangifer tarandus caribou, an endangered species in Central Labrador (Canada). The parameters of the habitat process are estimated by Monte Carlo methods. The policy implied by the model – alternatively banning and resuming logging according to appropriate habitat threshold levels – turns out to be quite attractive; it does not require long banning periods while it drastically reduces the extinction risk and increases forest value.     

Investment Choice with Polluted Capital

This paper develops a two-sector overlapping generations model in which one sector produces an externality on the environmental quality and the other has no effect. We assume that environmental quality degradation results from production activity of one sector. Then, we characterise the dynamical system globally and establish sufficient conditions for the global uniqueness of a perfect-foresight equilibrium path in the case of a Cobb-Douglas production function and a CES utility function. We show that the existence and the stability of the steady state depend on substitution and income effect and on the degree of pollution.