نتایج جستجو برای: sky quality

تعداد نتایج: 770845  

Journal: :Journal of the Illuminating Engineering Institute of Japan 2001

Journal: :Monthly Notices of the Royal Astronomical Society 2021

ABSTRACT A number of synoptic sky surveys are underway or being planned. Typically, they done with small telescopes and relatively short exposure times. search for transient variable sources involves comparison deeper baseline images, ideally obtained through the same telescope camera. With that in mind, we have stacked images from 0.68 m Schmidt on Mt. Bigelow taken over 10 yr as part Catalina...

2017
Sushil Chandra Amit Kumar Jaiswal Ram Singh Devendra Jha Alok Prakash Mittal

AIM The present study focuses on analyzing the effects of Sudarshan Kriya yoga (SKY) on EEG as well as ECG signals for stress regulation. To envision the regulation of stress Determination Test (DT) has been used. We have chosen a control group for contriving a cogent comparison that could be corroborated using statistical tests. SUBJECTS AND METHODS A total of 20 subjects were taken in the s...

2015
Michael Coughlin Christopher Stubbs

We report measurements from which we determine the spatial structure of the lunar contribution to night sky brightness, taken at the LSST site on Cerro Pachon in Chile. We use an array of six photodiodes with filters that approximate the Large Synoptic Survey Telescope’s u, g, r, i, z, and y bands. We use the sun as a proxy for the moon, and measure sky brightness as a function of zenith angle ...

2015
Krishna Kripal Sandeep S. Prabhu Syed Sirajuddin

The aim of the present study was to assess the effect of Sudarshan Kriya Yoga (SKY) on type 2 diabetes patients by assessing the glucose level in GCF by using commercially available glucometer. A total of 30 participants in the age group of 21-70 years were recruited for the study. Participants were divided into two groups: Group I: Fifteen otherwise healthy individuals. Group II: 15 individual...

2008
Jean-François Lalonde Srinivasa G. Narasimhan Alexei A. Efros

As the main observed illuminant outdoors, the sky is a rich source of information about the scene. However, it is yet to be fully explored in computer vision because its appearance depends on the sun position, weather conditions, photometric and geometric parameters of the camera, and the location of capture. In this paper, we propose the use of a physically-based sky model to analyze the infor...

Journal: :Applied optics 2007
Ramón Hegedüs Susanne Akesson Gábor Horváth

The effects of forest fire smoke on sky polarization and animal orientation are practically unknown. Using full-sky imaging polarimetry, we therefore measured the celestial polarization pattern under a smoky sky in Fairbanks, Alaska, during the forest fire season in August 2005. It is quantitatively documented here that the celestial polarization, a sky attribute that is necessary for orientati...

2003
H. Gharavi K. Ban

This project is supported by DARPA NMS Grant: 8922385. Abstract-This paper presents a cross-layer feedback control scheme for video communications over unstructured mobile networks for tactical operations. A peer-to-peer mobile ad-hoc network has been considered for the experimental testbed. Since ad-hoc networks can suffer greatly from heavy packet loss, in a multihop transmission we have cons...

2009
Olivier Rabaste Éric Chassande-Mottin Archana Pai

The gravitational wave detectors currently in operation perform the analysis of their scientific data jointly. Concerning the search for bursting sources, coherent data analysis methods have been shown to be more efficient. In the coherent approach, the data collected by the detectors are time-shifted and linearly combined so that the signatures received by each detector add up constructively (...

2002
E. N. Archibald T. Jenness W. S. Holland I. M. Coulson N. E. Jessop J. A. Stevens E. I. Robson R. P. J. Tilanus W. D. Duncan J. F. Lightfoot

The calibration of ground-based submillimetre observations has always been a difficult process. We discuss how to overcome the limitations imposed by the submillimetre atmosphere. Novel ways to improve line-of-sight opacity estimates are presented, resulting in tight relations between opacities at different wavelengths. The submillimetre camera SCUBA, mounted on the JCMT, is the first large-sca...

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