Time to Invest in Medicines Resilience

Commodities for better health in Africa--time to invest locally.

Editorials 387 With a rapidly expanding consumer market , African countries have new opportunities to strengthen their manufacturing sectors. The current climate of rising foreign investment will boost national economies and has the potential to benefit the health sector too. African countries now have a historic opportunity to free themselves from a vicious cycle of poverty, disease and depend...

Optimal Time to Invest Energy Storage System under Uncertainty Conditions

This paper proposes a model to determine the optimal investment time for energy storage systems (ESSs) in a price arbitrage trade application under conditions of uncertainty over future profits. The adoption of ESSs can generate profits from price arbitrage trade, which are uncertain because the future marginal prices of electricity will change depending on supply and demand. In addition, since...

When to invest in high speed rail

Resilience to Time-Correlated Noise in Quantum Computation

Building a quantum computer amounts to attaining exquisite control of a large quantum system. In particular, it requires quantum systems that (i) are isolated from the rest of the Universe and (ii) can be arbitrarily manipulated, all with any desired accuracy. A priori, quantum systems naturally displaying this unlikely combination of characteristics might exist [1]. Unfortunately, for the time...

When to Invest in Security? Empirical Evidence and a Game-Theoretic Approach for Time-Based Security

Games of timing aim to determine the optimal defense against a strategic attacker who has the technical capability to breach a system in a stealthy fashion. Key questions arising are when the attack takes place, and when a defensive move should be initiated to reset the system resource to a known safe state. In our work, we study a more complex scenario called Time-Based Security in which we co...