Understanding the global meteor flux at Earth requires the measurement of meteor velocities. While several radar methods exist for measuring meteor velocity, they may be biased by plasma reflection mechanisms. This paper presents a new method for deriving meteoroid velocity from the altitudinal extent of non-specular trails. This method employs our recent discoveries on meteor trail plasma inst...

The decay of underdense meteor trails in the polar mesopause region is thought to be predominantly due to ambipolar diffusion, a process governed by the ambient temperature and pressure. Hence, observations of meteor decay times have been used to indirectly measure the temperature of the mesopause region. Using meteor observations from a SKiYMET radar in northern Sweden during 2005, this study ...

This paper presents METEOR-NEXT, an extended version of the METEOR metric designed to have high correlation with postediting measures of machine translation quality. We describe changes made to the metric’s sentence aligner and scoring scheme as well as a method for tuning the metric’s parameters to optimize correlation with humantargeted Translation Edit Rate (HTER). We then show that METEOR-N...

We present in this manuscript a 4 year survey of meteor shower radiants utilizing the Southern Argentina Agile Meteor Radar (SAAMER). SAAMER, which operates at the southern most region of South America, is a new generation SKiYMET system designed with significant differences from typical meteor radars including high transmitted power and an 8-antenna transmitting array enabling large detected r...

[1] Radar data of non-specular meteor trails shows two clear and consistent features: (1) non–specular meteor trails are observed from a narrower altitude range than are head echoes and (2) an approximately 20 ms delay between meteor head echoes and trail radar scatter. This paper shows that both features can result from meteor trail plasma instability. Simulations have demonstrated that trails...

We present an initial experiment in integrating a disambiguation step in MT evaluation. We show that accounting for sense distinctions helps METEOR establish better sense correspondences and improves its correlation with human judgments of translation quality.

Meteor is an automatic metric for Machine Translation evaluation which has been demonstrated to have high levels of correlation with human judgments of translation quality, significantly outperforming the more commonly used Bleu metric. It is one of several automatic metrics used in this year’s shared task within the ACL WMT-07 workshop. This paper recaps the technical details underlying the me...

OBJECTIVES The METEOR (Measurement of Efficacy of Treatment in the 'Era of Outcome' in Rheumatology) initiative aims at improving care for RA patients by assisting rheumatologists in strict monitoring and tight control of disease activity. The state of the art of the METEOR initiative, the technical organisation of the database and future perspectives are described. METHODS RA patients are fo...

We describe our submission to the NIST Metrics for Machine Translation Challenge consisting of 4 metrics two versions of meteor, m-bleu and m-ter. We first give a brief description of Meteor . That is followed by descriptino of m-bleu and m-ter, enhanced versions of two other widely used metrics bleu and ter, which extend the exact word matching used in these metrics with the flexible matching ...

Meteors are an important source for (a) the metal atoms of the upper atmosphere metal layers and (b) for condensation nuclei, the existence of which are a prerequisite for the formation of noctilucent cloud particles in the polar mesopause region. For a better understanding of these phenomena, it would be helpful to know accurately the annual and diurnal variations of meteor rates. So far, thes...