Sustainable development -the notion that boosting economic growth, protecting natural resources, and ensuring social justice can be complementary goals -has lost much appeal over the past two decades, the victim of woolly thinking and interest-group politics. The concept can be relevant again, but only if its original purpose -helping the poor live healthier lives on their own terms -is restored.

In the last few decades, technological progress has been made important information systems that require high security, Use safe and efficient methods for protecting their privacy. It is a major challenge to Protecting vital data and the ability to threaten attackers. And this has made it important and necessary to be sensitive to the authentication and identify of individuals in confidential n...

In the last few decades, technological progress has been made important information systems that require high security, Use safe and efficient methods for protecting their privacy. It is a major challenge to Protecting vital data and the ability to threaten attackers. And this has made it important and necessary to be sensitive to the authentication and identify of individuals in confidential n...

We consider the first passage percolation model on Z2. In this model, we assign independently to each edge e a passage time t(e) with a common distribution F . Let T (u, v) be the passage time from u to v. In this paper, we show that, whenever F (0) < pc, σ 2 (T ((0, 0), (n, 0))) ≥ C log n for all n ≥ 1. Note that if F satisfies an additional special condition, infsupp(F ) = r > 0 and F (r) > ~...

Continually arriving information is communicated through a network of n agents, with the value of information to the j’th recipient being a decreasing function of j/n, and communication costs paid by recipient. Regardless of details of network and communication costs, the social optimum policy is to communicate arbitrarily slowly. But selfish agent behavior leads to Nash equilibria which (in th...

Viruses can occasionally emerge by infecting new host species. However, the early phases of emergence can hinge upon ecological sustainability of the virus population, which is a product of both within-host population growth and between-host transmission. Insufficient growth or transmission can force virus extinction before the latter phases of emergence, where genetic adaptations that improve ...

At the heart of Carens's careful exploration lies a core norm or belief: " The moral right of states to apprehend and deport irregular migrants erodes with the passage of time. " This then leads him to the proposition that amnesty should be the result of that passage of time. The passage of time represents attachments, a life well-lived, contributions to the community, the absence of a criminal...

The vertebrate blood-brain barrier (BBB) is critical for ensuring the maintenance of brain homeostasis, whilst protecting the brain against toxic insults. Various pathological events disrupt BBB integrity, holding several important clinical implications. In instances where the normal mechanisms controlling passage of substances into the brain are compromised, these could sensitize or even worse...

■ Abstract Agriculture is a resource-intensive enterprise. The manner in which food production systems utilize resources has a large influence on environmental quality. To evaluate prospects for conserving natural resources while meeting increased demand for cereals, we interpret recent trends and future trajectories in crop yields, land and nitrogen fertilizer use, carbon sequestration, and gr...