Hashtags and hip-hop: exploring the online performances of hip-hop identified youth using Instagram

Despite hip-hop’s popularity, little attention has been paid to its effects on youth gender performances on social media. This study has analyzed how youth who identify with three popular hip-hop songs interpreted the songs’ messages and performed their gender on the social media application Instagram (IG). Posts (N=450) from IG users were examined using modified consensual qualitative research procedures. Ten categories emerged that illustrate the range of gender performances which youth engaged in, each of which occurred within one of four domains: (a) mixed messages (self-love and visibility; relationships); (b) reified messages (party life; provocations; conspicuous consumption); (c) challenged messages (growth; making new meaning; teamwork); and (d) neutral messages (humor; other). The findings from this study illustrate the influential role of hip-hop music on youth gender performance in a natural context (IG). IG posts often mirrored, and in turn contributed to, the narrow range of acceptable gender performances in hip-hop, suggesting the need for youth media literacy skill development.     

Son Preference and Access to Social Insurance: Evidence from China's Rural Pension Program

Many scholars argue that the persistence of son preference in China is driven by greater anticipated old‐age support from sons than from daughters and the absence of formal financial mechanisms for families to save for retirement. The introduction of a voluntary old‐age pension program in rural China in the 1990s presents the opportunity to examine (1) whether parents with sons are less likely to participate in pension plans and (2) whether providing access to pension plans affects parental sex‐selection decisions. Consistent with the first hypothesis, we find that parents with sons are less likely to participate in the pension program and have less financial savings for retirement. Consistent with the second hypothesis, we find that an increase in county‐level pension program availability is associated with a slower increase in the sex ratio at birth.     

On the behaviour of tests based on sample spacings for moderatesamples

We revisit the question about optimal performance of goodness-of-fit tests based on sample spacings. We reveal the importance of centering of the test-statistic and of the sample size when choosing a suitable test-statistic from a family of statistics based on power transformations of sample spacings. In particular, we find that a test-statistic based on empirical estimation of the Hellinger distance between hypothetical and data-supported distribution does possess some optimality properties for moderate sample sizes. These findings confirm earlier statements about the robust behaviour of the test-statistic based on the Hellinger distance and are in contrast to findings about the asymptotic (when sample size approaches infinity) of statistics such as Moran's and/or Greenwood's statistic. We include simulation results that support our findings.     

NEW TECHNOLOGY INVESTMENTS IN MULTISTAGE PRODUCTION SYSTEMS

The introduction of new technologies in production and manufacturing (such as robotics, flexible manufacturing systems (FMS), and computer-aided design and manufacturing (CAD/CAM)) frequently motivates capital investment decisions. Traditionally, the need for additional capacity has motivated the evaluation of investment decisions which were undertaken based on financial factors such as the net present value (NPV), internal rate of return, taxation, and depreciation. This research integrates investment decisions with operational decisions for the case of multistage production assembly systems. We show that for such systems investment decisions affect not only the financial structure but also production scheduling and material flow in the system.