It is well understood that induction motors draw higher currents during their starting operations than is the case under full load running conditions. Since the early days of induction motor availability, starting methods other than Direct-on-Line have been used, and in some cases mandated by Utilities, to reduce the effect of these high starting currents on the electrical distribution network....

This report will present an investigation into one of the common used biometrics, personal signatures. From the perspective of system identification, the signature dynamics will be studied, and two novel verification algorithms will be discussed in details. They are spectral analysis and correlation method. We verified our algorithms using both public dataset and private dataset. The result wil...

A piloted simulation study has been conducted in a research simulator to provide a means to estimate the effects of different levels of wake turbulence on final approach. A worst-case methodology was used to ensure conservative estimates. Fourteen airline pilots voluntarily participated in the study and flew almost 1000 approaches. The pilots rated the subjective severity of the disturbances us...

A prototype decision support tool for terminal area air traffic controllers, referred to as the Final Approach Spacing Tool (FAST), was recently evaluated in operation with live air traffic at the Dallas/Fort Worth, Texas Airport. Controllers utilized FAST’s runway and sequence advisories to manage and control arrival traffic during more than twenty-five peak rush traffic periods. This paper pr...

Air traffic delay grows each year. NASA is developing the Final Approach Spacing Tool (FAST) to help reduce airport arrival delays. FAST is intended to increase throughput and reduce delays. Analysis and field trials have suggested that FAST can help controllers increase arrival throughput on busy runways by several aircraft per hour. Published simulation studies have predicted that delay reduc...

The Jacobian Conjecture can be generalized and is established : Let S be a polynomial ring over a field of characteristic zero in finitely may variables. Let T be an unramified, finitely generated extension of S with T = k. Then T = S. Let k be an algebraically closed field, let k be an affine space of dimension n over k and let f : k −→ k be a morphism of algebraic varieties. Then f is given b...

The Flight Procedure Standards Branch (AFS-420) of the Federal Aviation Administration (FAA) is responsible for developing the criteria to apply to procedures designed and implemented in the National Airspace System (NAS). With the introduction of the Required Navigation Performance (RNP) capability of modern aircraft, development of criteria for the containment widths, or minimum amount of pro...

In this paper we apply multidimensional decompositions to improve modelling results. Results generated by a model usually include both wanted and destructive components. In case of a few models, some of the components can be common to all of them. Our aim is to find basis elements and distinguish the components with the positive influence on the modelling quality from the negative ones. After r...

Predicting accurate trajectories with limited intent information is a challenge faced by air traffic management decision support tools in operation today. One such tool is the FAA’s Terminal Proximity Alert system which is intended to assist controllers in maintaining safe separation of arrival aircraft during final approach. In an effort to improve the performance of such tools, two final appr...