In this paper, computational fluid dynamics (CFD) is utilized to characterize a prototype biolistic delivery system, the biomedical device based on the contoured-shock-tube design (CST), with the aim at investigating shocks induced flow instabilities within the contoured shock tube. The shock/interface interactions, the growth of perturbation at an interface between two fluids of different dens...

Abstract “Queer” is a relatively recent and somewhat controversial term in African studies. Yet it proving to be productive, not only for understanding subjectivities of sexuality gender, but also situating Africa’s position the larger economy knowledge. Otu van Klinken explore productive tensions between “queer” “Africa,” aim read Africa as queer from Africa. Thus, rather than imagining polar ...

We analyze how economic shocks and policies a¤ect the intensity of social con‡ict. We show that not all shocks that could make society richer reduce con‡ict. In our model, positive shocks to labor intensive industries diminish social con‡ict, while positive shocks to capital intensive industries increase it. The key requirement is that appropriation activities be more labor intensive than the e...

the fetal origins hypothesis (foh), put forward in the epidemiological literature and later flourished in the economics literature, suggests that the time in utero is a critical period for human development. however, much attention has been paid to the consequences of fetal exposures to more extreme natural shocks, while less is known about fetal exposures to milder but more commonly experience...

In this paper, we prove the existence of a recursive competitive equilibrium (RCE) for an Aiyagari style economy with permanent income shocks and perpetual youth structure. We show that there exist equilibria where borrowing constraints are never binding. This allows us to establish a non-trivial lower bound on the equilibrium interest rate. To solve the individual’s problem, we present a new a...

Objective – The circular economy aims to preserve the value of products and materials within a closed supply chain. existing models decision-making methods for managing end product life cycle are mostly focused on economic aspects. While is aimed at combining environmental, social goals. This article develop model enterprise disposal used products, taking into account socio-environmental factor...

This paper examines the empirical relationship between trade and total factor productivity (TFP) in South Africa. Using data on actual trade protection across different manufacturing sectors, it is shown that trade liberalization had a positive impact on TFP growth during the 1990s. In addition, time-series evidence on macro data supports a positive long-run relationship between TFP and opennes...