Market definition with differentiated products: a spatial competition application

This paper applies the ‘hypothetical monopolist’ test of market definition to a retail market with products differentiated by means of location and other dimensions. The test for defining the relevant product and geographic market follows the conditions required by the European Union Competition Law and so it takes into account both demand- and supply-side substitution. The empirical model using sales data from a set of movie theatres in the North of Spain, incorporating the observed locations of consumers vis-à-vis the stores, shows that empirical tests of market definition may lead to an implausible (too restrictive) definition of the relevant market if supply-side substitution is not accounted for. It also shows that the main driver of competition in retail markets with differentiated products is not price but product characteristics.     

Los poderes fácticos mediáticos y el surgimiento del Estado híbrido en México

The process of institutional overlapping that developed in Mexico between formal traditional constitutional powers and mass electronic technologies, which gradually attained factual positions in the second half of the 20th century and the beginning of the 21st, changed the nature and basic governing functions of the national State. Thus, mass media power gave rise to a novel mixing phenomenon that generated a new type of “hybrid State”. The corresponding new historical Republic with a highly political and media oriented nature modified the structure and scenario of the conventional contemporary nation state. The evolution of this historical reality has not yet come to an end, but instead continues to develop with an enormous amount of dynamism and force towards new stages of transformation of the State, public space, and society as a whole, without knowing its final outcome due to the strengthening of factual media power while the major branches of government are gradually weakening. Consequently, society needs to critically engage in an objective analysis of this strategic phenomenon, its phases of transformation and the viable alternatives for recovering the national development path.     

Radicalization in Prisons? Field Research in 25 Spanish Prisons

This article has two principal objectives: (1) to study the behavioral dimensions of Muslim prisoners which predict their Islamist radicalism and (2) to study whether the behavior manifested by them is higher in prisons with a greater concentration of Muslims and a higher presence of prisoners convicted for Islamist terrorism than in prisons with fewer Muslims and no convicted Islamist terrorists. We conclude that some Spanish prisons may provide favorable social environments for jihadist radicalism and that the questionnaire utilized is a useful diagnostic tool for evaluating the magnitude of this phenomenon.     

The status of human cloning in the international setting]

The General Assembly of the United Nations submitted a Declaration on Human Cloning in March 2005. The text of such Declaration was the result of a difficult and long process, taking more than three years. Being a Declaration instead of a Resolution, it has not legal capability in inforcing United Nations members to act according to its recommendations. This article begins with an explanation of several terms referred to cloning. Different countries' legislation on cloning is analyzed. Positions of the same countries at the Convention of the United Nations are as well analyzed. Comparing both countries' views shows that national legislation on cloning is independent and orientated by some countries' particular interests and biological and ethical views on these issues. Future developments on human cloning and its applications will be shared among all countries, both the ones currently allowing and supporting "therapeutic" cloning and the ones now banning it. In such case, it would be important to reach agreements on these issues at an international level. The article discusses possible legislative developments and offers some proposals to reach such agreements.     

Z-line examination by the PillCam~(TM) SB:Prospective comparison of three ingestion protocols

AIM:To evaluate the Z-line visualization by the PillCamTM SB2 using three different ingestion protocols. METHODS:Ninety consecutive patients undergoing small bowel capsule endoscopy(SBCE)between January and May 2008 were included in the study. They swallowed the capsule in the standing(Group A= 30),supine(Group B=30)and right supine positions (Group C=30).Baseline patient characteristics, difficulties in capsule ingestion,esophageal transit times(ETT)and Z-line visualization were noted. RESULTS:No significa...