Results 21 to 30 of about 24,612 (239)

The Spatiotemporal Evolution and Influencing Factors of Electronic Information Manufacturing Industry in China

open access: yesRedai dili, 2022
After the global economic crisis of 2008, China's electronic information manufacturing industry faced the dual challenge of expanding the scale of agglomeration and improving growth quality. The spatiotemporal pattern of the development of the electronic
Feng Yuman, Liang Yutian
doaj   +1 more source

Stirling's Approximation for Central Extended Binomial Coefficients [PDF]

open access: yesThe American Mathematical Monthly, 2014
Slight modification of journal version; title ...
openaire   +2 more sources

Products and Sums Divisible by Central Binomial Coefficients [PDF]

open access: yesThe Electronic Journal of Combinatorics, 2013
In this paper we study products and sums divisible by central binomial coefficients. We show that $$2(2n+1)\binom{2n}n\ \bigg|\ \binom{6n}{3n}\binom{3n}n\ \ \mbox{for all}\ n=1,2,3,\ldots.$$ Also, for any nonnegative integers $k$ and $n$ we have $$\binom {2k}k\ \bigg|\ \binom{4n+2k+2}{2n+k+1}\binom{2n+k+1}{2k}\binom{2n-k+1}n$$ and $$\binom{2k}k\ \bigg|\
openaire   +3 more sources

How do consumers perceive the dual quality of goods and its economic aspects in the European Union? An empirical study [PDF]

open access: yesProblems and Perspectives in Management, 2019
Dual quality goods have been present in Europe for over 30 years. But only recently this problem has become current. More and more EU citizens complain about its presence in the united European market.
Lucia Bartková
doaj   +1 more source

On a new congruence in the Catalan triangle [PDF]

open access: yesNotes on Number Theory and Discrete Mathematics
For 0≤k≤n, the number C(n,k) represents the number of all lattice paths in the plane from the point (0,0) to the point (n,k), using steps (1,0) and (0,1), that never rise above the main diagonal y = x.
Jovan Mikić
doaj   +1 more source

The Care Home Independent Pharmacist Prescriber Study (CHIPPS): development and implementation of an RCT to estimate safety, effectiveness and cost-effectiveness

open access: yesProgramme Grants for Applied Research, 2023
Background Medicine prescribing, monitoring and administration in care homes can be significantly enhanced. Effective interventions to improve pharmaceutical care and resident outcomes are required.
David Wright   +29 more
doaj   +1 more source

On certain congruences involving central binomial coefficients

open access: yesMathematica Montisnigri, 2023
Let p be an odd prime. In this paper, using some properties of Fibonacci numbers, reciprocal polynomials for Fibonacci polynomials, and Legendre symbol, we establish some congruences involving central binomial coefficient modulo p and p^2. We also give some new identities for hyperbolic functions.
Rachid Boumahdi   +2 more
openaire   +1 more source

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

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

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