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In this chapter, an air cargo shipment planning problem is considered by including individual risk factors of any sub-contracted agents. Due to competitive market conditions, air cargo forwarders are advised to remain flexible in operations. A mixed integer linear programming formulation including the potential for divisible activities is developed to model the shipment planning problem. To solve this complicated problem, we employ an ant colony optimization (ACO) methodology. Numerical examples are generated using data from both the extant literature and from a global air cargo company, allowing investigation of the viability of the novel methodology. We find that the algorithm/methodology provides effective solutions for small problem sizes.

Research demonstrates that social class affects where high-achieving students apply to college, but the processes through which such effects come about are not well understood. This chapter draws on 46 in-depth interviews with high-achieving students in the Bay Area to examine how social class impacts college application decisions. I argue that the upbringing and experiences associated with students’ social class shape their narratives regarding how much autonomy or constraints they perceive in making college decisions. Higher-SES students present a narrative of independence about what they have done to prepare themselves for college and where to apply. In contrast, lower-SES students speak of experiences and considerations that reflect a narrative of interdependence between themselves and their parents that is grounded in the mutual concern they have for one another as the prospect of college looms. As a result, higher-SES students frame college as an opportunity to leave their families and immerse themselves in an environment far from home while lower-SES students understand college as a continuation of family interdependence. Consequently, higher-SES students are more likely to apply to selective private universities in other parts of the country, while lower-SES students tend to limit their choices to primarily selective and nonselective public colleges closer to home. This research enhances our understanding of the mechanisms by which social class differences in family experiences contribute to the perpetuation of social inequality.

Gender-diverse people experience unique cultural and interpersonal stigma in mainstream society and sometimes within their own communities; they face allegations of inauthenticity based on their nonconformity to either cisnormative or transnormative gender regimes. Based on 21 in-depth life history interviews, we unveil the intricate interactional process of negotiating identity and authenticity in the biographical work of gender-diverse individuals. In this study, gender-diverse people engaged in a “gender audit” with their gender-diverse interviewer. Gender audits yield verbal performances of gender with oneself and others. Ambiguity was “accounted for” or “embraced and created” in their biographical work to organize their life stories and undermine binary essentialism – a discourse that was “discursively constraining.” Gender audits took place in participants' day-to-day lives, either through self-audits, questioning from others, or both. In the final analysis, we assert that we all engage in gender auditing. Gender audits are intersubjective sites of domination, subordination, resistance, and social change. Gender diversity, then, can be viewed as a product of gender in flux.