3,228 research outputs found
Modeling Subtropical Water-level Dynamics Distribution
ERTS-1 MSS imagery coupled with data collection platforms relaying virtual real time data for modeling subtropical water level dynamics distribution in south Florid
Detection of Bursts from FRB 121102 with the Effelsberg 100-m Radio Telescope at 5 GHz and the Role of Scintillation
FRB 121102, the only repeating fast radio burst (FRB) known to date, was
discovered at 1.4 GHz and shortly after the discovery of its repeating nature,
detected up to 2.4 GHz. Here we present three bursts detected with the 100-m
Effelsberg radio telescope at 4.85 GHz. All three bursts exhibited frequency
structure on broad and narrow frequency scales. Using an autocorrelation
function analysis, we measured a characteristic bandwidth of the small-scale
structure of 6.41.6 MHz, which is consistent with the diffractive
scintillation bandwidth for this line of sight through the Galactic
interstellar medium (ISM) predicted by the NE2001 model. These were the only
detections in a campaign totaling 22 hours in 10 observing epochs spanning five
months. The observed burst detection rate within this observation was
inconsistent with a Poisson process with a constant average occurrence rate;
three bursts arrived in the final 0.3 hr of a 2 hr observation on 2016 August
20. We therefore observed a change in the rate of detectable bursts during this
observation, and we argue that boosting by diffractive interstellar
scintillations may have played a role in the detectability. Understanding
whether changes in the detection rate of bursts from FRB 121102 observed at
other radio frequencies and epochs are also a product of propagation effects,
such as scintillation boosting by the Galactic ISM or plasma lensing in the
host galaxy, or an intrinsic property of the burst emission will require
further observations.Comment: Accepted to ApJ. Minor typos correcte
Development and fabrication of improved Schottky power diodes, phases I and II
Reproducible methods for the fabrication of silicon Schottky diodes were developed for the metals tungsten, aluminum, conventional platinum silicide and low temperature platinum silicide. Barrier heights and barrier lowering were measured permitting the accurate prediction of ideal forward and reverse diode performance. Processing procedures were developed which permit the fabrication of large area (approximately 1 sqcm) mesa-geometry power Schottky diodes with forward and reverse characteristics that approach theoretical values
The Application of LANDSAT Data from Collection Platforms and LANDSAT Imagery for Fire Management, Everglades National Park, Florida
There are no author-identified significant results in this report
Development and fabrication of improved Schottky power diodes
Reproducible methods for the fabrication of silicon Schottky diodes have been developed for tungsten, aluminum, conventional platinum silicide, and low temperature platinum silicide. Barrier heights and barrier lowering under reverse bias have been measured, permitting the accurate prediction of forward and reverse diode characteristics. Processing procedures have been developed that permit the fabrication of large area (about 1 sq cm) mesageometry power Schottky diodes with forward and reverse characteristics that approach theoretical values. A theoretical analysis of the operation of bridge rectifier circuits has been performed, which indicates the ranges of frequency and voltage for which Schottky rectifiers are preferred to p-n junctions. Power Schottky rectifiers have been fabricated and tested for voltage ratings up to 140 volts
When Liability Can Attach for Remaining Passive: Construction of the Term Disposal under CERCLA. Crofton Ventures Limited Partnership v. G & H Partnership
A Clear Statement of Recovery: Applying the NCTA Doctrine in the Determination of Whether Oversight Costs are Recoverable Under CERCLA. U.S. v. Dico
Developing a data relay network for monitoring hydrologic conditions in south and central Florida
There are no author-identified significant results in this report
CIVIL PROCEDURE—IN FORMA PAUPERIS EMPLOYMENT DISCRIMINATION PLAINTIFFS AND THE FEDERAL GOVERNMENT: ESCAPING THE 15(c) TRAP
CIVIL PROCEDURE—IN FORMA PAUPERIS EMPLOYMENT DISCRIMINATION PLAINTIFFS AND THE FEDERAL GOVERNMENT: ESCAPING THE 15(c) TRAP
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