Results 31 to 40 of about 101,155 (259)

Spatial distribution of Diaphorina citri Kuwayama (Hemiptera: Psyllidae) in citrus orchards Distribuição espacial de Diaphorina citri Kuwayama (Hemiptera: Psyllidae) em pomares de citros

open access: yesScientia Agricola, 2010
The psyllid Diaphorina citri Kuwayama is one of the most important pests of citrus, mainly because it is the vector of the bacterium that causes huanglongbing (HLB) or 'Greening' disease.
Marilia Gregolin Costa   +3 more
doaj   +1 more source

Descent sets on 321-avoiding involutions and hook decompositions of partitions

open access: yes, 2014
We show that the distribution of the major index over the set of involutions in S_n that avoid the pattern 321 is given by the q-analogue of the n-th central binomial coefficient.
Barnabei, Marilena   +3 more
core   +1 more source

Dynamics of Land Use and Land Cover Changes in Harare, Zimbabwe: A Case Study on the Linkage between Drivers and the Axis of Urban Expansion [PDF]

open access: yes, 2019
With increasing population growth, the Harare Metropolitan Province has experienced accelerated land use and land cover (LULC) changes, influencing the city’s growth.
Marondedze, Andrew K.   +1 more
core   +1 more source

Harmonic Series of Convergence Ratio “1/4" with Cubic Central Binomial Coefficients

open access: yesAxioms
We examine a useful hypergeometric transformation formula by means of the coefficient extraction method. A large class of “binomial/harmonic series” (of convergence ratio “1/4”) containing the cubic central binomial coefficients and harmonic numbers is ...
Chunli Li, Wenchang Chu
doaj   +1 more source

Long-range rapidity correlations between mean transverse momenta

open access: yesEPJ Web of Conferences, 2017
The forward-backward correlation strength between event-mean transverse momenta of particles produced in separated rapidity intervals in high energy hadronic collisions is analyzed in the simple model with the string fusion on a transverse lattice.
Vechernin Vladimir
doaj   +1 more source

Some congruences involving binomial coefficients

open access: yes, 2015
Binomial coefficients and central trinomial coefficients play important roles in combinatorics. Let $p>3$ be a prime. We show that $$T_{p-1}\equiv\left(\frac p3\right)3^{p-1}\ \pmod{p^2},$$ where the central trinomial coefficient $T_n$ is the constant ...
Cao, Hui-Qin, Sun, Zhi-Wei
core   +1 more source

Estimating the stochastic uncertainty in sample-based estimates of infant mortality in Ghana [PDF]

open access: yes, 2020
The Infant Mortality Rate (IMR) is an important population health statistic often used as one of the indicators of the health status of a nation. In many countries lacking adequate vital registration systems, sample methods are used to estimate IMRs ...
Baker, J, Kposowa, A, Swanson, DA
core  

On an Asymptotic Series of Ramanujan [PDF]

open access: yes, 2009
An asymptotic series in Ramanujan's second notebook (Entry 10, Chapter 3) is concerned with the behavior of the expected value of $\phi(X)$ for large $\lambda$ where $X$ is a Poisson random variable with mean $\lambda$ and $\phi$ is a function satisfying
A. Gut   +19 more
core   +2 more sources

Short-term earthquake forecasting experiment before and during the L’Aquila (central Italy) seismic sequence of April 2009

open access: yesAnnals of Geophysics, 2015
In this paper, we compare the forecasting performance of several statistical models, which are used to describe the occurrence process of earthquakes in forecasting the short-term earthquake probabilities during the L’Aquila earthquake sequence in ...
Maura Murru   +3 more
doaj   +1 more source

Distribution Pattern of Coffee Berry Borer (Hypothenemus Hampei) on Arabica and Robusta Coffee

open access: yesCoffee and Cocoa Research Journal, 2014
Coffee berry borer [CBB, Hypothenemus hampei (Ferr.)] is the main pest on coffee causing a significant losses. Distribution pattern of the pest is not known deeply until now, especially in Indonesia.
Soekadar Wiryadiputra
doaj   +1 more source

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