A Multi-airport Logistics System (MLS) involves the logistics development of multiple airports in an urban agglomeration. Calculating spatial differentiation MLS and examining its characteristics have theoretical practical value. Based on MLS, we established index system applied entropy-criteria importance through intercriteria correlation weighting method to data from 2019 evaluate multi-airpo...

Recently, we have presented the first exhaustive analysis of the world-wide airport network. Two important results of that study are that: (i) the world-wide airport network is a small-world network with power-law decaying degree and betweenness centrality distributions; (ii) the most connected cities (largest degree) are typically not the most central cities (largest betweenness centrality). T...

As major airports in the United States have reached their maximum capacity and became congested, available capacity at surrounding airports has been utilized by the emergence of secondary airports. Given the expectation of a larger number of operations in the National Airspace System (NAS) in the upcoming years, this trend of secondary airports emergence is likely to strengthen. In order to und...

Optimizing gate scheduling at airports is an old, but also a broad problem. The main purpose of this problem is to find an assignment for the flights arriving at and departing from an airport, while satisfying a set of constraints.A closer look at the literature in this research line shows thatin almost all studies airport gate processing time has been considered as a fix parameter. In this res...

OBJECTIVE To measure secondhand smoke levels in workplaces in Guatemala and to compare exposure to levels in other Latin American cities. METHODS Exposure was estimated by passive sampling of vapor phase nicotine using a filter badge. Filters were placed in 1 hospital, 1 school, 2 universities, 1 government building, the airport, and 10 restaurants/bars. In total, 103 filters were deployed (p...

This research investigates whether passengers living in a city with local public airport have an attachment to that and tend use it. Focusing on the greater Kansai area its three airports Kobe, which owns one of them, Kobe Airport, as example, empirical analysis was conducted using nested logit model micro data. The result basic shows prefer Airport when compared other cities. An additional bas...

The airport industry is changing. Once understood as stand-alone public infrastructures, many modern airports now operate within privatized multi-airport systems and contend with previously unknown competitive pressures. As a result, many of the same airports which once enjoyed natural monopolies and government protections must now compete with secondary facilities both for airline patronage an...

We describe a multi-modal unscented Kalman filter developed for estimation of aircraft position, velocity and heading from noisy surface surveillance data. The raw data is composed of tracks generated by the Airport Surface Detection Equipment, Model-X at Boston Logan International Airport, and is obtained from the Runway Status Lights system. The multi-modal filter formulation facilitates esti...

OBJECTIVE To perform a quantitative analysis of the background noise at Congonhas Airport surroundings based on large sampling and measurements with no interruption. METHODS Measuring sites were chosen from 62 and 72 DNL (day-night-level) noise contours, in urban sites compatible with residential use. Fifteen sites were monitored for at least 168 hours without interruption or seven consecutiv...