New bounds for locally irregular chromatic index of bipartite and subcubic graphs

A graph is locally irregular if the neighbors of every vertex v have degrees distinct from the degree of v. A locally irregular edge-coloring of a graph G is an (improper) edge-coloring such that the graph induced on the edges of any color class is locally irregular. It is conjectured that three colors suffice for a locally irregular edge-coloring. In the paper, we develop a method using which we prove four colors are enough for a locally irregular edge-coloring of any subcubic graph admiting such a coloring. We believe that our method can be further extended to prove the tight bound of three colors for such graphs. Furthermore, using a combination of existing results, we present an improvement of the bounds for bipartite graphs and general graphs, setting the best upper bounds to 7 and 220, respectively.     

International coopetition for innovation: Are the benefits worth the challenges?

International coopetition has rarely been studied in relation to innovation. Further exploration of effects of international coopetition, i.e. the pursuit of simultaneous cooperation and competition, on a firm’s innovation performance is especially important as such a relationship is challenging with a high propensity to fail. This observation formed the point of departure for this study, which aims to increase the understanding of the effects of international coopetition on firm innovativeness and how these effects are conditioned on the magnitude of the organizational adjustments a firm introduces. We use an unbalanced panel of 9839 firms that participated in four waves of the Swedish Community Innovation Survey between 2008 and 2014 as our empirical base. We illustrate that firms that cooperate with competitors internationally are more likely to exhibit higher propensity to introduce radical innovations, yet this effect is conditioned upon the magnitude of organizational adjustments. Overall, our study contributes to the understanding of the implications of international coopetition and what a firm needs to benefit from it.     

Kontexteffekte in Familien – Angleichung von Paaren und intergenerationale Transmission am Beispiel Religiosität

The present contribution shows conceptual and methodological approaches for the study of social context effects within families. Family members mutually constitute the social context in which family behavior and personality development take place. Social influence in families becomes evident empirically in family members’ significant similarity concerning a wide variety of characteristics. The present study focuses on intrafamily convergence with regard to religiousness. In an empirical illustration, both (a) horizontal intracouple alignment and (b) vertical intergenerational transmission processes are examined. Besides the finding that experiences during religious socialization in the parental home have a stronger impact than partner influences in adulthood, our analyses show that social context effects are more pronounced the stronger the cohesion of the respective interaction dyad is (e.g., according to measures of relationship quality).     

Male Honor and the Ruralization of HIV/AIDS in Michoacán. A Case of Indigenous Return Migration in Mexico

The purpose of this text is to analyse the motives of seasonal migrant workers for attempting to get their wives pregnant when they return to Mexico. The meanings attributed to paternity, pregnancy and rearing are analysed from the perspective of the migrant worker and his wife. Ethnographic research was conducted in several Purépecha communities in Michoacán, supported by interviews with indigenous, who travelled to the United States for periods of up to three years, and with their wives, who stayed in Mexico. The migrant workers interviewed consider pregnancy and the paternity derived from it as an important means of male legitimization and sexual control of their wives, particularly valid in their rural communities of origin, where they know they are absentee males. When they return to Mexico they seek sexual relations for reproductive purposes, since they fear their wives will have extramarital relations in their absence. From these findings, it was considered necessary to implement sexual and reproductive health policies with pluri‐ethnic and gender approaches that take into account male beliefs and practices regarding paternity and pregnancy in a rural context. The development of sensitizing policies aimed at migrant males during their stays in Mexico is recommended.     

Alzheimer's disease and euthanasia

Employing the tenets of philosophical materialism, this paper discusses the ethical debate surrounding assisted suicide for persons suffering end-stage Alzheimer's. It first presents a classification of the dissociative situations between "human individual" and "human person". It then moves on to discuss challenges to diagnosed persons and their caregivers in relation to the cardinal virtues of Spinozistic ethics - strength of character (fortitudo), firmness (animositas) and generosity (generositas). Finally, a number of ideas attached to the debate - "right of choice", "death with dignity", "quality of life" and "compassion in dying" - are discussed in order to clarify their foundations.     

The Determinants of Lottery Sales in Portugal

In sum, this paper examines the core determinants of lottery sales in Portugal. With panel data analysis covering 18 Portuguese districts and 5 years, this study explains the variations in a district’s per-capita lottery sales in terms of key theoretical hypotheses such as per capita district income, age, education index, gender and religion. This paper concludes that the richer Portuguese districts spend more than the poorer districts and there is an inverted-U relationship between lottery sales and per capita income. The paper also concludes that married Catholic citizens spend more on lottery products than others and that the level of education returns a negative effect on lottery spending.     

Crying for Food: The Mexican Myths of ‘La Llorona’ and ‘The Hungry Woman’ in Cherríe L. Moraga

The Mexican legend of ‘La Llorona’ (‘The Weeping Woman’), who drowned her children out of revenge for being abandoned by her lover, and the Aztec creation myth of ‘The Hungry Woman’ — crying constantly for food, with mouths all around her body — have inspired Chicana writers in the symbolic representation of their own yearning, be it sexual, identity-building, or anti-patriarchal. This essay seeks to lay the mythical groundwork within this topic, as well as to illustrate with some particular examples the different reappropriations of these myths in Cherríe L. Moraga, mainly in her play The Hungry Woman: A Mexican Medea (2001). With a view to opening up a past ‘that can provide a kind of road map to our future’ (: ix), these examples of transgressive women will be deprived of the feminine colonial passivity imbued by the dominant male discourse, and analysed as a complex, active, polyvalent mythological female corpus that integrates both life and death, womb and grave. This hybrid approach is inherent to the Aztec mythology on which Moraga relies in order to transcend Manichaeistic resolutions and probe the social, political, and gender reasons leading a hungry mother to commit infanticide.     

Introduction: Aspiring migrants,local crises and the imagination of futures ‘away from home’

This special issue addresses the imagination of futures ‘away from home’ in a globalising world. While a growing number of migration scholars have taken into account that migration considerations are always socially embedded and culturally informed, the processes at work among a mounting number of (young) men and women throughout the world, who are convinced that a better life can only be found ‘away from home’, have been notably understudied. This special issue goes beyond the study of migration aspirations as a question of migration only. It focuses on the specific contexts (in five different countries) within which migration dreams are born, and sometimes even cultivated. It explores the sociocultural embedding of these aspirations by investigating the interpretation of local realities versus global possibilities, and examines how the aspirations of so many worldwide link up to the wider interconnections between globalisation and the sociocultural, political and economic transformations ‘back home’.     

Yearning for faraway places: the construction of migration desires among young and educated Bangladeshis in Dhaka

These days, the imagined destinations of ever more people, particularly in the ‘global South’, are not where they were born but elsewhere. Using a case study of educated (lower) middle-class youth in Dhaka, this paper attempts to demonstrate that for many ‘aspiring migrants’, the yearning for leaving is a metaphor for disappointment and disengagement rather than the first step towards transnational migration. Economic growth, rapid urbanisation and the increasing investment in education infest the emerging urban (lower) middle-class youth with new ‘modern’ lifestyle desires that cannot be fulfilled in their home country and generate a sense of disengagement with Bangladesh. The paper focuses in particular on how the – culturally embedded – imaginations of foreign places link up to personal (re-)evaluations of local lives. Nearly all informants explained how local socio-economic, political and existential insecurities made them yearn for ‘safe’ places where their dreams could be fulfilled.