Examinando por Autor "Hamoudi, Hamid"

Mostrando 1 - 12 de 12

Awareness Campaigns in a Horizontally Differentiated Market with Environmentally Conscious Consumers, Private Versus Public Duopoly
(International Journal of Environmental Research and Public Health, 2022-10-08) Hamoudi, Hamid; Avilés-Palacios, Carmen
This paper examines horizontally differentiated duopolies à la Hotelling with environmentally conscious consumers and a planner promoting a sustainable good with costly awareness campaigns (ACs). The objective is to find the planner’s optimal strategies and their effects on the firms’ behaviour. The analysis is carried out with two approaches, considering a private and a public duopoly. In both, it is shown that the planner chooses the average characteristic supported by a higher intensity campaign. However, with the private one, such an outcome is possible if the planner has minimal resources. Consumer consciousness and ACs have opposite effects on the firms and the planner. It is proven that consumer awareness favours the interests of the duopolies and reduces those of the planner, while the contrary is true for ACs. Finally, it is shown that a public duopoly is the best scenario for sustainability. This study provides an environmental policy to replace or complement traditional instruments and a more suitable business framework to achieve efficient results.
Board Gender Diversity and Firm Performance: An Analysis of the Causal Relationship in Spanish Listed Companies
(administrative sciences, 2024-01-03) Hamoudi, Hamid; Pacheco-Olivares, Maria Rosario; García-López, María-Jose
Applying a mixed theoretical approach, this paper addresses the causal relationship between the presence of women on steering committees (SC) and in senior management positions and the firm’s stock return, measured through the price–earnings ratio (P/E). To do so, we disaggregate the composition of the boards of 27 IBEX 35 companies over the period 2018–2021 by gender and type of female director and analyze the relationship between the number and proportion of women on the SC, their distribution by category, and the P/E. The sample contains a total of 108 observations, and its structure follows a panel data methodology. Validation of the working hypotheses was carried out using Poisson logistic regression. The results indicate a positive and significant relationship between stock returns and the percentage of women on the SC. The results also indicate that stock returns are not significantly affected by the category distribution of female directors.
Firm location and monopolistic competition
(Papers in Regional Science, 2015-02-09) Hamoudi, Hamid; Ago, Takanori; Lefouili, Yassine
This paper investigates the equilibrium spatial distributions of firms in a circular city under monopolistic competition. We show that the uniform distribution constitutes an equilibrium for a very general class of transport cost functions. Moreover, we establish that symmetric partial agglomeration arises as an equilibrium if and only if the transport cost function is linear and the number of locations is even. We also find that all rotationally symmetric distributions with continuous support are spatial equilibria if the transport costs are linear. This multiplicity of equilibria however disappears in the case of strictly concave transport costs: the uniform distribution is then the unique spatial equilibrium distribution with continuous support.
Green zoning regulation under price discrimination
(Peoceedings of Rijeka Faculty of Economics: Journal of economics and Business, 2017-05-31) Hamoudi, Hamid; J. Moral, María
This study aims to examine urban zoning within a linear city in a Bertrand duopolistic competition framework with price discrimination and linear transportation costs. It analyses the effects of introducing an environmental area where economic and residential activity are not allowed. The welfare function used to determine the optimal size of the green area allows for a possible regulator’s bias in favour of firms/consumers. It is shown that location-price competition can be either reduced or increased depending on the size of the green area. The results indicate when a regulator implements green zoning, under linear transportation costs, influences the optimal location of firms (because these locations depend on the size of the green zone). In consequence, zoning may be used as an effective industrial or urban policy tool.
Optimal Zoning in Spatial Differentiation
(Estudios de Economía, 2017-01) Hamoudi, Hamid; Rodríguez Iglesias, Isabel; Sanz Martín-Bustamante, Marcos
This study analyzes optimal zoning policy in a duopolistic spatial competition framework for both circular and linear spaces. A regulator is introduced in the third stage of the price-location game through a welfare function to model zoning preferences from firms and consumers. An equilibrium outcome is then found for both spatial configurations. When the regulator is inclined to favor consumers (consumer-oriented) both firms are restricted to locate at one point to serve the whole market. Nevertheless, when the preferences of the regulator are biased towards firms (firm-oriented) the zoning area is maximized, with both firms being located at the market boundaries. The equilibrium outcome confirms location patterns found in real life situations under a non-neutral regulator.
Optimal zoning in the unconstrained Hotelling game
(Papers in Regional Science, 2014-05-31) Rodríguez Iglesias, Isabel; Bárcena‐Ruiz, Juan Carlos; Casado‐Izaga, F.Javier; Hamoudi, Hamid
This paper studies a zoning mechanism that gives the optimal locations of two firms in a linear city under mill prices. A regulator biased towards consumers allows a central area of the city to be shared by firms and consumers and thus firms are not allowed to locate outside the city limits. A regulator more concerned about firms extends this central zone outside the city limits and the city has a residential use only if the firms so decide. Finally, a regulator highly biased towards firms allows them to locate only beyond a set distance from the city, so there is a strip of land outside the city but close to its boundaries, for alternative uses.
Optimal zoning of a mixed duopoly
(The Annals of Regional Science, 2013-10-04) Hamoudi, Hamid; Bárcena‐Ruiz, Juan Carlos; Casado‐Izaga, F.Javier
This paper studies the optimal zoning of amixed duopolywhen the objective function of the public firm is a weighted sum of its profits and social surplus.We find that a regulator may attain the optimal locations of both firms by restricting the location of the private firm only. There is no need to limit the location of the public firm. In contrast, in a private duopoly, the regulator needs to restrict the locations of both firms.
Photovoltaic and wind cost decrease estimation: Implications for investment analysis
(Energy, 2017-03-31) Mauleón, Ignacio; Hamoudi, Hamid
This research intends to contribute to the analysis of planned and forecast future paths of renewable energy capacity deployments - mainly wind and solar photovoltaic. The paths forecast by the International Energy Agency as published in its roadmaps are considered. The learning rate of both energies, or 'learning by doing', that implies cost decreases as a result of capacity deployment is explicitly considered, as well as its variability. New values for both wind and photovoltaic learning rates are estimated and presented, that allow a significant simulation analysis. The implied uncertainty by that variability induces risks for the financial planning of investments, and a framework to assess and manage that risk is presented and implemented in the simulations conducted. It is shown that this parameter-variability is significant and yields less favorable results as compared to standard static-fixed parameter simulations. Alternative investment paths are considered, the results showing that a faster path does not necessarily result in a significant increase in the accumulated final investment. Thus, accelerated deployment paths are advised to fight climate change.
Product Differentiation in a Regulated Market: A Welfare Analysis
(International Advances in Economic Research, 2014-10-14) Hamoudi, Hamid; marcos, Marcos; Rodríguez Iglesias, Isabel
This article analyses both a circular and a linear market where consumers are distributed along the whole space, whilst firms are located in a region restricted by the regulator. We consider a three stage game in which in the first stage the regulator chooses the size of the space where firms will be located (the commercial area), in the second stage firms choose locations and in the third stage they compete in prices. We find that with this type of market configuration independently of space considered under quadratic transportation costs, there exists price equilibrium for every possible firms’ location. We also derive that the optimal size of the commercial area will depend on the welfare function of the regulator and, in particular, that once a regulator bias is considered, maximum differentiation, minimum differentiation or intermediate cases may be obtained.
Product Sustainability and Consumer Environmental Awareness in Differentiated Markets
(International Advances in Economic Research, 2023-12-07) Hamoudi, Hamid; Avilés-Palacios, Carmen
Sustainable management of natural stock resources can be promoted through state intervention. This study investigates optimal regulatory strategies to mitigate the negative environmental effects of human activities within a duopolistic, differentiated linear market à la Hotelling framework. The analysis is conducted from both a business and a social perspective, aiming to elucidate the role of regulatory interventions, awareness campaigns, and sustainable production characteristics in shaping firm behavior and market outcomes. Under the business perspective, a game-theoretical approach is employed, involving the regulator and two competing firms. The equilibrium in prices and production characteristics is derived, revealing how firms respond to sustainable characteristics and awareness campaigns. In the social perspective, where the regulator has complete control, optimal strategies are determined to maximize social welfare, resulting in reduced differentiation and enhanced sustainability. This study identifies the optimal level of awareness campaign and sustainable characteristic proposed by the regulator. The findings highlight the significance of coordinated regulatory policies and awareness campaigns to induce firms toward more sustainable practices, ultimately contributing to a more ecologically balanced market. The study offers insights for policymakers and practitioners seeking effective strategies to address environmental concerns in differentiated markets, thereby promoting sustainable economic growth and reducing ecological impacts.
THE EFFECTS OF ZONING IN SPATIAL COMPETITION
(Regional Science, 2011-09) Hamoudi, Hamid; Risueño, Marta
This paper considers a location model to illustrate the effect of zoning on competition. A planner is in charge of designing a city in a circular space where firms and consumers are located on different sides.With this type of market configuration, equilibrium in location under concave transport costs is proved. Then, a welfare function with different weights attached to consumer and firm surpluses is introduced to highlight zoning regulation as an influential competition policy tool. Depending on the regulator’s political profiles and the demand, it is shown that zoning can lead to strong, weak, or moderate competition.
The equivalence of convex and concave transport cost in a circular spatial model with and without zoning
(The equivalence of co, 2015-06) Rodríguez Iglesias, Isabel; Hamoudi, Hamid; Sanz Martín-Bustamante, Marcos
This article depicts a location game in a circular market. The equivalence results between a convex and a concave transport cost are reexamined by assuming an arbitrary length. In contrast to previous research the solution found shows that the equivalence relationship depends on the space length. Furthermore, the analysis is extended to a circular model with unitary length and zoning. In this case equivalence does not hold. Moreover, non-existence of equilibrium is shown under strictly linear quadratic functions. Surprisingly, equilibrium exists for a concave quadratic function but not for a convex quadratic function