نتایج جستجو برای: radial distance

تعداد نتایج: 295619  

1997
Edward J. Smith A. Balogh

The radial component of the solar magnetic field measured at Ulysses as it traveled from the equator in the southern hemisphere has been to -80.2” latitude and returned. The radial component multiplied by the square of the radial distance, i.e., BRr2, averaged over 77 day intervals (three solar rotations) is approximately constant at -3.5 NT and shows no evidence of a dependence on heliographic...

2002
Marco Masi

We show that the effects of radial galactic tides alone can change the dynamics of an Oort cloud of comets around a star in a highly sensitive manner. The Oort cloud dynamics depends primarily from the star’s position in the Galaxy and its mass. The dynamical variation is characterized by a dramatic change of comet perihelia, many of which are shifted towards the inner planetary system if the s...

1983
Sergio Decherchi Paolo Gastaldo Judith Redi Rodolfo Zunino

Text-mining methods have become a key feature for homeland-security technologies, as they can help explore effectively increasing masses of digital documents in the search for relevant information. This research presents a model for document clustering that arranges unstructured documents into content-based homogeneous groups. The overall paradigm is hybrid because it combines pattern-recogniti...

2009
Stephen R. Kane Suvrath Mahadevan Kaspar von Braun Gregory Laughlin David R. Ciardi

Transiting planet discoveries have yielded a plethora of information regarding the internal structure and atmospheres of extra-solar planets. These discoveries have been restricted to the low-periastron distance regime due to the bias inherent in the geometric transit probability. Monitoring known radial velocity planets at predicted transit times is a proven method of detecting transits, and p...

2010
F. Liu A. Kornecki O. Shmuilovich Y. Bureau

Introduction: Several studies have investigated differences in quantitative morphological features between benign and malignant breast tumors, as assessed by dynamic contrast enhanced-MRI (DCE-MRI); however, very little information is available on the extent of such differences between certain subgroups of malignant tumors, such as hormone receptor positive and negative tumors. Such information...

2001
C. Büttner

The capability of the Muon Tracking Detector to measure the radial and tangential angles of muons in extensive air showers, in combination with the shower direction as determined by the scintillator array of KASCADE experiment, has been investigated. Due to different characteristics in shower development of light and heavy primary particles the radial angle is sensitive to the mass of them. For...

2007
D. L. Jones P. R. Weissman J.-F. Lestrade D. W. Latham

We have combined Hipparcos proper motion and par-allax data for nearby stars with ground-based radial velocity measurements to nd stars which may have passed (or will pass) close enough to the Sun to perturb the Oort cloud. Close stellar encounters could deeect large numbers of comets into the inner solar system, with possibly serious consequences for the impact hazard on the Earth. Only one st...

1998
S. Frandsen

We present new spectroscopic and photometric time series observations of the δ Scuti star FG Vir. We detect the oscillations via changes in the equivalent widths of hydrogen and metal absorption lines. From the ratios between spectroscopic and photometric amplitudes, we assign l values to the eight strongest oscillation modes. In particular, we identify two radial modes (l = 0) and find that th...

2011
A. Kirk H. W. Muller A. Herrmann M. Kocan

The radial propagation of type-I ELMs in ASDEX Upgrade has been measured using a number of techniques. The most reliable technique uses a filament probe to measure the time difference between two separated probes and yields a mean radial velocity obtained of ~1.5 kms -1 . The radial velocity calculated using a time of flight technique suffers from uncertainties in the start time and yields radi...

2012
Ron Hazani Nitin J. Engineer Josh Elston Bradon J. Wilhelmi

OBJECTIVE Basal joint arthritis is a common cause of pain and disability, particularly in elderly women. Corticosteroid injection with splinting provides a reliable long-term relief for patients with mild arthritis. Proper location of the basal joint with anatomic landmarks can facilitate diagnosis and treatment of basal joint arthritis while avoiding inadvertent injury to local structures. The...

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