Results 41 to 50 of about 3,450 (188)
A Supervised Learning Framework for Accelerating Solvers and Metaheuristics in Routing Problems
Networks, EarlyView.ABSTRACT Routing problems such as the traveling salesman problem (TSP) and the capacitated vehicle routing problem (CVRP) are computationally challenging due to the exponential growth of their feasible solution spaces with increasing instance size.
Johannes Gückel +2 more
wiley +1 more source
Digital surveillance of animals and nature recovery
People and Nature, EarlyView.Abstract Digital surveillance technologies (DSTs) are widely applied in nature recovery for their potential to generate novel data on species and ecosystems through digital tracking, automation (e.g. from hazardous locations) and from newly recruited citizen scientists.
William M. Adams
wiley +1 more source
The Long Trajectory of Rubber Physics: 3500+ Years and Counting
Journal of Polymer Science, EarlyView.Natural rubber's trajectory is traced from Mesoamerican use of Castilla elastica through vulcanization and the pneumatic tire to macromolecular physics and modern solid‐state refrigeration. Illustrations of C. elastica and an H. brasiliensis plantation frame the historical progression from indigenous material, then industrial crop and on to advanced ...
Gregory B. McKenna
wiley +1 more source
Route generation for optimization in the Air Transport System : aircraft recovery problem and 4D trajectory planning [PDF]
, 2020 The punctuality and efficiency of the Air Transport System (ATS) has a significant impact on the economy. In 2016, the US Passenger Carrier Delay Costs were estimated to be USD 62.55 per minute and the total US flight arrival delays amounted to over 59 million minutes. Furthermore, air traffic volume is growing rapidly. The International Civil Aviation
openaire +3 more sources
Research on Irregular Flight Recovery Based on Air-Rail Spatiotemporal Network Model
IEEE AccessThe issue of irregular flight recovery has long been a significant and challenging problem for airlines, necessitating an effective program to develop recovery plans.
Lili Zu +3 more
doaj +1 more source
Developing a Model for Solving the Flight Perturbation Problem
Journal of Airline and Airport Management, 2015 Purpose: In the aviation and airline industry, crew costs are the second largest direct operating cost next to the fuel costs. But unlike the fuel costs, a considerable portion of the crew costs can be saved through optimized utilization of the internal ...
Amirreza Nickkar +3 more
doaj +1 more source
Quarterly Journal of the Royal Meteorological Society, EarlyView.The Weak‐Constraint Four‐Dimensional Variational (WC‐4DVAR) system markedly improved the analysis and forecasting of the 2024 sudden stratospheric warming (SSW) event. It reduced biases and enhanced 7–9 day predictions of temperature across the SSW life cycle, with the most pronounced gains for winds also during the critical onset period.
Shaoying Li +5 more
wiley +1 more source
Key node identification and risk propagation of aircraft departure control
四川大学学报. 自然科学版, 2023 The detection of aircraft departure risk is an important part of civil aviation safety production, but the current research focuses mostly on the aircraft movement process and static hazard sources, ignoring the control business impact and risk dynamic ...
KANG Rui, YANG Kai
doaj
Sliding Mode Control in Aerospace Applications: A Survey
International Journal of Robust and Nonlinear Control, EarlyView.ABSTRACT Sliding mode control (SMC) enjoys robustness to matched and unmatched (in the case of minimum phase input‐output dynamics) bounded perturbations, and finite time convergence. Second‐order and higher‐order sliding mode control systems (2‐SMC/HOSMC) retain all the advantages of sliding mode control, but in addition can be applied to systems of ...
Yuri Shtessel, Christopher Edwards
wiley +1 more source
Simplified stability criteria for drone/carrier-aircraft close range flight
Hangkong gongcheng jinzhanBoth drone swarm intensive flight and drone aerial recovery involve the stability problem of drone/carrier-aircraft flight in close range interference flow field. This paper proposes an aerodynamic derivative model for drone/carrier-aircraft interference
HU Handong +4 more
doaj +1 more source