Statistical simulator for the engine knock

Although the automotive industry is rapidly shifting to electric cars, Hybrid Electric Vehicles (HEVs) – with both an electric motor and an internal combustion engine – will still dominate for the next half century. Read more

Anomaly detection and classification in traffic flow data from fluctuations in the flow–density relationship

An important goal in highway traffic management is event detection – finding ways to use real-time data to alert authorities to potential problems as they begin to emerge. Read more

Uncertainty relation between detection probability and energy fluctuations

A particle following a classical random walk on a finite graph will explore the system completely, in time visiting every site repeatedly. The process is ergodic. Read more

Assessing the Potential Earthquake Precursory Information in ULF Magnetic Data Recorded in Kanto, Japan during 2000–2010: Distance and Magnitude Dependences

Since ancient times, scientists have sought to identify precursory signals which might allow the prediction of impending earthquakes or volcanic eruptions. Read more

Existence of multiple noise-induced transitions in a Lasota-Mackey map

The addition of stochastic noise to a deterministic dynamical system can induce dramatic qualitative changes in its behaviour. In one counterintuitive effect – termed noise induced order – the addition of noise to an already chaotic system can make its behaviour more orderly and regular. Read more

Industrial Topics in Urban Labor System

Dividing things into categories is a human habit, helping us to learn and understand the external world, as well as to share and communicate knowledge. Read more

Chimera states through invariant manifold theory

In nonlinear dynamics, a chimera refers to a dynamical hybrid – a state in a network of identical coupled oscillators exhibiting a mix of both synchronous and asynchronous behaviour. Read more

When Distance Drives Destination, Towns Can Stimulate Development

In most of the developing world, individual wealth tends to increase with city size, making migration an important avenue for poverty reduction. Read more

Risk is random: The magic of the d’Alembert

In 19th-century casinos, most common betting took the form of even-money bets placed on red or black in games such as Roulette. Strategy lay in deciding how much to wager on each bet, and when to quit playing. Read more

Interrupting vaccination policies can greatly spread SARS-CoV-2 and enhance mortality from COVID 19 disease: the AstraZeneca case for France and Italy

Vaccines against the SARS-CoV-2 virus appear, finally, to offer nations around the globe a pathway out of the COVID pandemic. Yet vaccines themselves come with potential risks of side-effects. In the aftermath of some three dozen or so cases of deaths from blood clots in recently vaccinated individuals, a handful of European nations recently paused their delivery of the AstraZeneca vaccine pending further study. Read more