Perceived social approval and condom use with casual partners among youth in urban Cameroon

Background: HIV prevention programs targeting youth often emphasize the role of peers, and assume that youths will model their behavior after their peers'. We challenge this view; we argue that adopting a given behavior requires social approval, and that youths do not necessarily turn to peers for such approval. This study analyzes survey data on youths in urban Cameroon to 1) identify which type of persons youths look to for social approval, and 2) establish how important social approval by these persons is for condom use among youths. Methods: We analyzed data from three survey waves (2000, 2002, and 2003) of a reproductive health survey conducted among urban Cameroonian youth (aged 15-24). Only respondents who reported having at least one casual partner in the past year were retained for the analysis. Bivariate analyses and structural equation modeling were used to examine relationships among perceived social approval, attitudes towards condoms and condom use. Results: The data show that only 3% of youths named their friends as people whose opinion they valued, while 93% mentioned family members. The perceived approval of condom use by these persons had a significant positive effect on the frequency of condom use among youths. The frequency of condom use was also affected by the respondents' attitudes toward condom use, the range of persons with whom they discussed reproductive health matters, whether they were enrolled in school, socioeconomic status, their self-efficacy, perceived severity of AIDS, risk perception and sexual risk behavior. The perceived social approval of condom use and the respondents' own condom attitudes were correlated. Conclusions: Our analysis demonstrates that perceived social approval facilitates the adoption of condom use among urban Cameroonian youth. However, youths tend to value the opinions of family members much more than the opinions of their peers. These results suggest that interventions targeting youths should not focus exclusively on peers but should also include other groups, such as parents and community leaders

Sexual activity and school deviant behaviour among adolescents: peer influence and homophily interactions with sex and ethnicity

Criminologist and sociologists have since long recognized the importance of peer influence in adolescence, but only rarely are peer influence interactions studied with regard to important salient status characteristics. This study examines whether homophily status characteristics condition the influence between best friends and the individual´s behaviour. The focus of the study is on school deviant behaviour as well as sexual activity. More specifically, we address the question to what extent peer influence differs for friends of the same sex or ethnicity (i.e. homophilic relationships), compared to friends who differ on sex and ethnicity (i.e. heterophilic relationships). Data from the Flemish Educational Assessment Study are used, which collected complete network data, from a representative sample of Flemish adolescents in secondary schools (N=11,837), clustered in 160 networks. Results indicate that peers best friend relationships are indeed strongly homophilic on both of these status dimensions and that homophilic friendships are significantly more influential than heterophilic ones. Further results show that native Belgian adolescents (majority teens) are significantly more influenced by homophilic relationships than adolescents belonging to a ethno-cultural minority group (minority teens). For sexual activity, girls are influenced stronger by homophilic relationships than boys, while for school deviant behavior the opposite is true. Cross-ethnic influence of majority teens on minority teens is substantially smaller than for minority teens on majority teens, especially for sexual activity. Implications of these findings for theory development and prevention programs are discussed

The rising powers and globalization : structural change to the global system between 1965 and 2005

This article critically assesses the increasingly prevalent claims of rapidly changing global power relations under influence of the ‘rising powers’ and ‘globalization.’ Our main contention is that current analyses of countries’ degree of global power (especially for the BRICS) has been dominated by the control over resources approach that, although it gauges power potential, it insufficiently accounts for how this potential is converted into actual global might. By drawing on a unique and extensive dataset comprised of a wide array of political, economic, and military networks for a vast number of countries between 1965 and 2005, we aim to 1) reassess alleged changes in the structure of the world-system since 1965 and 2) analyze whether or not these changes can be attributed to globalization. We pay attention to the trajectories of the BRICS and to the possibly divergent structural evolutions of the political and economic dimensions that constitute the system. Our results show that despite a certain degree of power convergence between countries at the sub-top of the system, divergence continues to take place between the most and least powerful, and stratification is reproduced. Globalization is further shown to exacerbate this trend, though its effect differs on the political and economic dimensions of the system. Though the traditional ‘core powers’ might have to share their power with newcomer China in the future, this hardly heralds a new age in which the global system of power relations are converging to the extent that stratification is being undermined

MeDICINE: Rapid Prototyping of Production-Ready Network Services in Multi-PoP Environments

Virtualized network services consisting of multiple individual network functions are already today deployed across multiple sites, so called multi-PoP (points of presence) environ- ments. This allows to improve service performance by optimizing its placement in the network. But prototyping and testing of these complex distributed software systems becomes extremely challenging. The reason is that not only the network service as such has to be tested but also its integration with management and orchestration systems. Existing solutions, like simulators, basic network emulators, or local cloud testbeds, do not support all aspects of these tasks. To this end, we introduce MeDICINE, a novel NFV prototyping platform that is able to execute production-ready network func- tions, provided as software containers, in an emulated multi-PoP environment. These network functions can be controlled by any third-party management and orchestration system that connects to our platform through standard interfaces. Based on this, a developer can use our platform to prototype and test complex network services in a realistic environment running on his laptop.Comment: 6 pages, pre-prin

The PhD track: who succeeds, who drops out?

Doctoral completion rates are an indicator of successful doctoral programmes and of a region's potential of highly skilled workforce. The Human Resources in Research - Flanders (HRRF) database contains data of all academic staff appointments, doctoral student registrations, and doctoral degrees of all Flemish universities from 1990 onwards. Previous research has identified the following factors as affecting successfully completing the PhD: cohort, scientific discipline, type of scholarship or appointment, gender, age, and nationality. We present a competing risk analysis of factors determining PhD completion and drop-out. This event history technique allows for determining the relative impact of each of these characteristics on the level of success/failure and time to degree. It predicts at what time periods the 'time to degree' and 'time till drop out' is most likely to occur, and why some individuals experience the event earlier than others. Our results show that scientific discipline and funding situation are the most important factors predicting success in obtaining the doctorate degree

Community-Level Influences on Early Sexual Initiation in Nigeria

Using national survey data from Nigeria, this study examines individual and community-level determinants of early sexual initiation. Community-level factors exercise important effects on the early onset of sexual initiation. Consistent with the social capital hypothesis, young people living in communities that are more knowledgeable about HIV/AIDS transmission and prevention, communities that are open to receiving HIV/AIDS information, and communities that support condom use as well as family planning are more likely to delay sexual initiation than others. The disadvantages associated with living in a community that is less well informed, less supportive of condom use and less open to receiving information on HIV/AIDS are significantly higher for women. Women who live in communities where attitudes about reproductive health are not positive or where there is lack of social support for condom use are at a heightened risk of early sexual initiation