نتایج جستجو برای: spread data

تعداد نتایج: 2492068  

Journal: :veterinary research forum 2013
hossein naghili hossein tajik karim mardani seyed mehdi razavi rouhani ali ehsani

drop plate technique has a priority and preference compared with the spread plate procedure, because of less time, quantity of media, effort requirement, little incubator space, and less labor intensive. the objective of this research was to compare the accuracy and fidelity of drop plate method vs. spread plate method by parametric and nonparametric statistical tests. for bacterial enumeration...

Doubly censoring scheme, which includes left as well as right censored observations, is frequently observed in practical studies. In this paper we introduce a new interval say tracking interval for comparing the two rival models when the data are doubly censored. We obtain the asymptotic properties of maximum likelihood estimator under doubly censored data and drive a statistic for testing the ...

1997
Moe Z. Win Robert A. Scholtz

Attractive features of time-hopping spreadspectrum multiple access systems employing impulse signal technology are outlined and emerging design issues are described. Performance of such communications systems in terms of multiple-access capability is estimated for both analog and digital data modulation formats under ideal multiple access channel conditions.

1998
Moe Z. Win Robert A. Scholtz

Attractive features of time-hopping spreadspectrum multiple access systems employing impulse signal technology are outlined and emerging design issues are described. Performance of such communications systems in terms of multiple-access capability is estimated for both analog and digital data modulation formats under ideal multiple access channel conditions.

2007
Luis Pérez-Freire Pierre Moulin Fernando Pérez-González

This paper presents an information-theoretic analysis of security for data hiding methods based on spread spectrum. The security is quantified by means of the mutual information between the observed watermarked signals and the secret carrier (a.k.a. spreading vector) that conveys the watermark, a measure that can be used to bound the number of observations needed to estimate the carrier up to a...

Journal: :Spora 2022

Disease spread in close-knit communities depends heavily on the natural immunity of individuals community as well individuals’ interactions within environment. This study uses data from a game tag called Humans vs. Zombies, played small liberal arts campus, to examine how this “human element” can affect diseases such communities. We fit five disease models our and find best-fit parameters for e...

Journal: :Journal of Development Economics 2020

Journal: :Journal of Astronomical Telescopes, Instruments, and Systems 2022

Here, we present the status of an ongoing project aimed at developing a point spread function (PSF) reconstruction software for adaptive optics (AO) observations. In particular, test first time implementation pyramid wave-front sensor data on our algorithms. As step in assessing its reliability, applied to bright, on-axis, point-like sources using two independent sets observations, acquired wit...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تبریز - دانشکده برق و کامپیوتر 1392

سیستم های طیف گسترده(spread spectrum) امروزه به طور وسیعی مورد استفاده قرار می گیرند. این سیستم ها ابتدا توسط ارتش آمریکا و در طی جنگ جهانی دوم مورد استفاده قرار گرفت. در سیستم های طیف گسترده دنباله خطی (direct sequence spread spectrum) سیگنال داده در یک دنباله شبه نویز ضرب می شود تا پهنای باند افزایش یابد. در گیرنده نیز سیگنال دریافتی پس از دمدولاسیون در یک دنباله شبه نویز همانند دنباله موجود ...

Drop plate technique has a priority and preference compared with the spread plate procedure, because of less time, quantity of media, effort requirement, little incubator space, and less labor intensive. The objective of this research was to compare the accuracy and fidelity of drop plate method vs. spread plate method by parametric and nonparametric statistical tests. For bacterial enumeration...

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