Since the 2000s, digital entrepreneurship has been framed by policymakers, NGOs and international corporations as a solution to Africa’s high youth unemployment. In this article, I explore how the promise of serial digital entrepreneurship – the idea that repeated business failure will eventually result in a profitable digital start-up – lured young adult Akan digital entrepreneurs into downwardly mobile trajectories. Building on the recent anthropology of (de-)kinning, I show that young adult Akan were given and/or negotiated a window of opportunity during which their families allowed them to invest most of their resources in establishing their own middle-class career and marriage. As families tried to close this window out of concern for the young adults’ ability to achieve a middle-class lifestyle and redistribute opportunities to siblings, serial entrepreneurship could encourage entrepreneurs to distance themselves from their kin in their continued unprofitable pursuit of digital start-up success. When these young adults finally wanted to quit entrepreneurship, they could find themselves far removed from obligations of care and opportunity from kin and the waged job market, trapped in the precarious pursuit of digital start-up ‘dreams’. This article contributes to debates on the African middle classes by conceptualizing downward social mobility in Ghana as the de-kinning that occurs when family members fail to reach mutual understandings about how to pursue middle-class aspirations.

Disaster Medicine is a critical and often neglected component of health care. The World Association for Disaster and Emergency Medicine (WADEM) Board of Directors, as well as the WADEM Student and Young Professional Special Interest Group, recognize the importance of introducing Disaster Medicine concepts early in health care education and have put forth a position statement emphasizing this importance. As leaders in Disaster Medicine, we aim to highlight the need for the integration of Disaster Medicine education into health care profession training. By acknowledging this educational need and by providing recommendations to appropriate stakeholders, we anticipate that this investment in Disaster Medicine education will assist in developing well-prepared health care professionals who will improve prehospital and emergency medicine, public health, and day-to-day health care throughout local and global communities.

In this paper we use the periodic Toda lattice to show that certain Lagrangian product configurations in the classical phase space are symplectically equivalent to toric domains. In particular, we prove that the Lagrangian product of a certain simplex and the Voronoi cell of the root lattice $A_n$ is symplectically equivalent to a Euclidean ball. As a consequence, we deduce that the Lagrangian product of an equilateral triangle and a regular hexagon is symplectomorphic to a Euclidean ball in dimension 4.

Legal institutions rely on monitoring and prediction technologies to enforce the law. Drawing on three recent books—Predict and Surveil by Sarah Brayne (2021), Data Driven by Karen Levy (2023), and Policing Patients by Elizabeth Chiarello (2024)—this review essay examines how the incorporation of these technologies brings about three shifts in the work of frontline enforcement. First, it broadens the categories of actors with the capacity to facilitate the formal enforcement of law. Second, it reorients enforcement to increasingly center on generating information for future use by institutional actors beyond the original information gatherer. Third, it increases the variety and frequency of agents’ decisions about how much to engage with new tools. These shifts are likely to exacerbate a persistent challenge faced by frontline agents: navigating conflicting goals and flawed laws with inadequate resources and guidance.

Sub-clinical ketosis (SCK) significantly affects post-partum dairy cow performance and welfare. A total of 11,327,959 test-day (TD) records over two years on 1.76 million Holstein cow lactations and 2840 farms were processed to ascertain thresholds for milk acetone (mACE) and β-hydroxybutyrate (mBHB) as indicators of SCK on the basis of a significant milk yield loss at the TD. The set thresholds for mACE and mBHB were 0.10 mmol/L and 0.14 mmol/L, respectively. The prevalence of SCK in the population during the first 60 days in milk (DIM) was estimated based on herd size and milk yields, utilizing one or both of these metabolites surpassing their respective thresholds. Analyzing both mACE and mBHB together revealed a higher occurrence of SCK in small herds (fewer than 100 cows) and a lower occurrence in the two most productive milk categories. The prevalence had an inverse relationship with the daily milk yield at 60 DIM, indicating a surprisingly high frequency of low-productivity herds in the risk classes exceeding 30%. These results suggest that assessing SCK prevalence through the combined evaluation of mACE and mBHB is a more effective approach than using the milk fat to protein ratio, especially when considering different herd sizes and daily milk yield at 60 DIM.