همهاخبارمکان‌یابراهنمای خریدتصاویرویدیومقالات علمی
درباره برتیناتماس با ماهوش مصنوعی رایگانایمیل رایگانمترجم رایگانDNS رایگانهواشناسیکاوش برتیناتبلیغ در برتینا
درباره سرچحریم خصوصیشرایط

برتینا (فناوری پیشرفته پارسیان) شرکت دانش‌بنیان حوزه هوش مصنوعی

www.tandfonline.com/doi/abs/10.1080/01621459.1999.10473885PDF

Classes of nonseparable, spatio-temporal stationary covariance functions

N Cressie, HC Huang - Journal of the American Statistical …, 1999 - Taylor & Francis
۱۰۱۷ ارجاع1999

… Figure 7 gives a plot of the sample standard deviation versus the sample mean of wind speed (over time) obtained from each of the 289 sites. No specific pattern (eg, increasing pattern) …

pubs.aeaweb.org/doi/pdf/10.1257/0002828041464560PDF

Aid, policies, and growth: comment

W Easterly, R Levine, D Roodman - American economic review, 2004 - pubs.aeaweb.org
۱۷۵۹ ارجاع2004

… When we extend the sample forward to 1997, we no longer find that aid promotes growth in good policy environments. Similarly, when we expand the BD data by using the full set of …

acsess.onlinelibrary.wiley.com/doi/abs/10.2134/agronj2002.8150PDF

Improving nitrogen use efficiency in cereal grain production with optical sensing and variable rate application

WR Raun, JB Solie, GV Johnson, ML Stone… - Agronomy …, 2002 - Wiley Online Library
۱۱۷۳ ارجاع2002

… entire plot area (24 m 2 ) was treated with a uniform N rate. For Treatments 6 through 8, each 1-m 2 area within the 24-m 2 main plot was sensed and treated independently. Field plot …

pubs.acs.org/doi/pdf/10.1021/cr00028a002

Organic diradicals and polyradicals: from spin coupling to magnetism?

A Rajca - Chemical reviews, 1994 - ACS Publications
۱۳۰۷ ارجاع1994

Diradicals and polyradicals are molecules that possess two or more weakly interacting “unpaired” electrons, each formally associated with different atomic centers in a molecule. …

muse.jhu.edu/pub/1/article/786010/summaryPDF

Epidemics have lost the plot

G Lachenal, G Thomas - Bulletin of the History of Medicine, 2020 - muse.jhu.edu
۱۸ ارجاع2020

This article draws on Charles Rosenberg's classic essay "What Is an Epidemic?" (1989) to reflect on the complex narrative structures and temporalities of epidemics as they are …

www.sciencedirect.com/science/article/pii/S0924271614001075PDF

Effect of field plot location on estimating tropical forest above-ground biomass in Nepal using airborne laser scanning data

P Rana, L Korhonen, B Gautam, T Tokola - ISPRS journal of …, 2014 - Elsevier
۳۱ ارجاع2014

… This study investigates the effect of sample-plot selection in Nepal, based on two accessibility factors: distance to road and degree of slope. The sparse Bayesian method was employed …

pubs.aeaweb.org/doi/pdf/10.1257/0002828041302244PDF

The impact of individual teachers on student achievement: Evidence from panel data

JE Rockoff - American economic review, 2004 - pubs.aeaweb.org
۴۶۶۱ ارجاع2004

School administrators, parents, and students themselves widely support the notion that teacher quality is vital to student achievement, despite inconsistent evidence linking achievement …

pubs.geoscienceworld.org/gsa/gsabulletin/article-abstract/94/2/222/202835PDF

Provenance of North American Phanerozoic sandstones in relation to tectonic setting

WR Dickinson, LS Beard… - Geological …, 1983 - pubs.geoscienceworld.org
۲۹۰۲ ارجاع1983

… Border-line compositions cause some suites to plot in two separate but adjacent provenance fields on the QFL and QmFLt diagrams. We have plotted the points for such suites using the …

journals.aps.org/prd/abstract/10.1103/PhysRevD.94.052004PDF

Measurement of the CKM angle in , decays with time-dependent binned Dalitz plot analysis

V Vorobyev, I Adachi, H Aihara, DM Asner, T Aushev… - Physical Review D, 2016 - APS
۲۷ ارجاع2016

We report a measurement of the C P -violation parameter φ 1 obtained in a time-dependent analysis of B 0 → D ( * ) 0 h 0 decays followed by D 0 → K S 0 π + π - decay. A model-…

www.aeaweb.org/articlesPDF

Gibrat's law for (all) cities

J Eeckhout - American Economic Review, 2004 - aeaweb.org
۱۱۹۴ ارجاع2004

… We plot the size distribution of counties, which covers the entire US population (see Figure A… Figure 4 shows the scatter plot of growth against city size (on ln scales). Mere observation of …

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