This paper explores the internal mechanism of flight departure delay for the Delta Air Lines (IATA-Code: DL) from the viewpoint of statistical law.We roughly divide all of delay factors into two sorts: propagation factor (PF), and nonpropagation factors (NPF).From the statistical results, we find that the distribution of the flight departure delay
In order to clarify the characteristics of oil and gas migration and accumulation in the Lower Paleozoic of the Gubei buried hill and guide the direction of further oil and gas exploration, the hydrocarbon generation, transportation, migration and accumulation were systematically studied based on the data of drilling, seismic and testing.The oil an
Due to the characteristics and connectivity of today’s critical infrastructure systems, cyber-attacks on these systems are Toy currently difficult to prevent in an efficient and sustainable manner.Prevention and mitigation strategies need accurate identification and evaluation of: system vulnerabilities, potential threats and attacks, and ap
The precise roles that oxidants play in lifespan and aging are still unknown.Here, we report the Full Mattress discovery that chronologically aging yeast cells undergo a sudden redox collapse, which affects over 80% of identified thiol-containing proteins.We present evidence that this redox collapse is not triggered by an increase in endogenous oxi
Long-term ecological research (LTER) sites need a periodic assessment of the state of their ecosystems and services in order to monitor trends and prevent irreversible changes.The ecological integrity (EI) framework opens the door to evaluate any ecosystem in a comparable way, by measuring indicators on ecosystem structure and processes.Such an app