Stress is one of the occupational diseases that affect workers worldwide, affecting their own productivity and performance (as well as that of the organizations where they work), and even their physical and mental health. According to the International Labour Organization, Mexican workers suffer from stress the most all over the world, since theirs is one of the most stressful professions. With this in mind, the aim of this research is to study the work stress in bus rapid transit drivers and minibus in Mexico City. The method used is based on an exploratory statistical factorial analysis. It is concluded that the factors which a higher influence in the onset of stress are organizational, environmental (physical/individual), inherent to the position, extra organizational and individual. Although divergent among drivers, minibus drivers are the workers who suffer the most from stress.

Resumen El objetivo de esta investigación consiste en estudiar la eficacia de la policía estatal mexicana por medio del impacto de su diseño organizacional y el desarrollo del factor humano. Para ello se ha utilizado como método el análisis causal multivariado. Los resultados indican que la especia lización de las funciones de los cuerpos policiacos, la falta de agentes, la infiltración del crimen, la ausencia de lealtad y la negligencia, son variables estadísticamente significativas en su eficacia, por lo que se propone un índice considerando aspectos como el número de homicidios, autos asegurados robados, la percepción ciudadana de inseguridad y la calificación ciudadana de la actuación de la policía, lo que podría ser útil para mejorar la eficacia de la policía.

The business sector is at the frontier of a new paradigm that entails assuming social responsibility for its activities from an increasing social pressure to operate sustainably. Despite a growing literature regarding this topic, is barely analyzed how consumers perceive the social responsibility of corporations, which is the purpose of this study in the company Danmex de México. The research method is based on the linear regression and correlational analysis. The results show discretionary and environmental factors with the highest incidence in the perception of the image in the corporate social responsibility at Danmex, followed by ethical and community factors.

Corporate responsibility is still a secondary issue in most companies anywhere in the world. However, corporate responsibility and sustainability are increasingly common among businessmen, so that literature has emerged on various approaches to this type of case identifying the factors that compose them, which is the objective of this study, to the Mexican context. The research method is based on the documentary analysis of the main models of social responsibility and sustainability, and a hierarchical decision making analysis. The results provide a first theoretical approach to the management of companies in Mexico, allowing them to guide their operational strategies, and similarly for public * Este artículo es resultado del proyecto 20140682: Identificación de Factores de Responsabilidad Social y Sostenibilidad empresarial en México. Financiado por el Instituto Politécnico Nacional, México. Con el objetivo de identificar los factores de responsabilidad social y sustentabilidad empresarial a ser considerados por el sector empresarial mexicano.

This article is about the planningprocess of a bus rapid transit system in Mexico City, called Metrobus.It is a qualitative research that describes the two consolidated models of BRT planning, the one from the Research Board of Transportation based in North America developed cities; and the one from the Institute of Policy for Transportation and Development applied in Latin American cities. Also the study describethe BRT system of the Mexico´s Cityin which fieldwork was done based on in-depth interviews to themanagers of the operating carrier companies of the 4 current BRT corridors. The Mexican case shows two variables that are not strongly considered in the studied models and should be incorporated in similar context: the BRT environmental impact and the strategy of consensus withthe BRT operators.Keywords : BRT environmental impact, Metrobús, BRT planning models IntroductionThe Bus Rapid Transit (BRT) known in México as Metrobus have gained enormous popularity since they contribute to give a modern and orderly image in the cities where the implementation is achieved. In the case of Latin America there are several cities that have this kind of massive transportation, but the available literature agrees with the lack of planning of the transportation systems in general in this region (Rivas et al., 2007). However, the importance of planning are taken up in different kinds of studies, for exampleLevinson et al., (2003) who after studying 26 cases of study developed a guide for the implementation of a BRT system. A work of great interest not only to academics but to public policy makers, managers, directors of transportation and planners. A review of the characteristics of the Bus Rapid Transit projects made by Jarzab, Lightbody and Maeda (2002) they compare the costs and complexity between implementing light rail system versus BRT and conclude that the cost and the determination depend on the context.Polzin, Baltes, and Vuchic (2002) made a critical study of BRT systems as a viable alternative compared to urban trains. They conclude that the BRT is an initial step where there is a possibility of consolidating, later on, urban rail systems which are more expensive and therefore the BRT is a step forward in the urban renewal strategy and in the image of public transportation of a city.There is an extensive literature on the Latin American experience it highlights the work of: Menckhoff (2005) who after knowing and comparing the experience of different countries including the cities of Quito (Ecuador), Bogota, (Colombia), Santiago (Chile) Leon (Mexico) concluded that BRT systems are a great improvement over traditional bus systems often linked to integral reform processes of public transportation that are much less expensive than light train system and subway but its implementation is complex and requires competent planners and strong political leadership.In another important research Graftieaux and Hidalgo (2009) after comparing 11 cities in Asia and Latin America found that implantation resulted in a re...