Results 21 to 30 of about 1,275,654 (194)

The RES in the Countries of the Commonwealth of Independent States: Potential and Production from 2015 to 2019

open access: yesEnergies, 2021
Amidst the changes and adjustments of the international energy situation, the leading trend is to shift from fossil fuels to low-carbon fuels, and ultimately, to enter the era of sustainable energy, based mainly on renewable energy.
Maciej Chowaniak   +5 more
doaj   +1 more source

Organisational Structure and Created Values. Review of Methods of Studying Collective Intelligence in Policymaking

open access: yesEntropy, 2021
The domain of policymaking, which used to be limited to small groups of specialists, is now increasingly opening up to the participation of wide collectives, which are not only influencing government decisions, but also enhancing citizen engagement and ...
Rafał Olszowski   +3 more
doaj   +1 more source

Unique Common Fixed Point Theorems for Pairs of Hybrid Maps under a New Condition in Partial Metric Spaces

open access: yesDemonstratio Mathematica, 2014
In this paper, we introduce a new condition namely, ‘condition (W.C.C)’ and obtain two unique common fixed point theorems for pairs of hybrid mappings on a partial Hausdorff metric space without using any continuity and commutativity of the mappings.
Rao K. P. R., Rao K. R. K.
doaj   +1 more source

Analytical solutions of couple stress fluid flows with slip boundary conditions

open access: yesAlexandria Engineering Journal, 2014
In the present article, the exact solutions for fundamental flows namely Couette, Poiseuille and generalized Couette flows of an incompressible couple stress fluid between parallel plates are obtained using slip boundary conditions. The effect of various
Devakar M., Sreenivasu D., Shankar B.
doaj   +1 more source

A Social Network Analysis of Tweets Related to Mandatory COVID-19 Vaccination in Poland

open access: yesVaccines, 2022
Poland’s efforts to combat COVID-19 were hindered by endemic vaccination hesitancy and the prevalence of opponents to pandemic restrictions. In this environment, the policy of a COVID-19 vaccination mandate faces strong resistance in the public debate ...
Rafał Olszowski   +4 more
doaj   +1 more source

A Triple Fixed Point Theorem for Multimap in a Hausdorff Fuzzy Metric Space

open access: yesJournal of Mathematics, 2013
We obtain two triple fixed point theorems for a multimap in a Hausdorff fuzzy metric space.
K. P. R. Rao, K. R. K. Rao
doaj   +1 more source

A Suzuki type unique common fixed point theorem for two pairs of hybrid maps under a new condition in partial metric spaces

open access: yesDemonstratio Mathematica, 2016
In this paper, we introduce a new condition namely: condition (W.C.C.) and utilize the same to prove a Suzuki type unique common fixed point theorem for two hybrid pairs of mappings in partial metric spaces employing the partial Hausdorff metric which ...
Rao K. P. R., Rao K. R. K., Imdad M.
doaj   +1 more source

Presic Type Fixed Point Theorem for Four Maps in Metric Spaces

open access: yesJournal of Mathematics, 2016
We obtained a Presic type fixed point theorem for two pairs of jointly 2k-weakly compatible maps in metric spaces. We also have given an example to illustrate our main theorem.
K. P. R. Rao, Sk. Sadik, S. Manro
doaj   +1 more source

Common Fixed Point Theorems for Mappings under (CLRS)-Property in Partial Metric Spaces

open access: yesDemonstratio Mathematica, 2016
In this paper, we introduce the concept of (CLRS)-property for mappings F : X × X→X and S : X → X (wherein X stands for a partial metric space) and utilize the same to prove two common fixed point theorems for two pairs of mappings in partial metric ...
Rao K. P. R.   +2 more
doaj   +1 more source

Solar Power: Stellar Profit or Astronomic Cost? A Case Study of Photovoltaic Installations under Poland’s National Prosumer Policy in 2016–2020

open access: yesEnergies, 2021
In Poland, the development of photovoltaic (PV) installations is an important element in the development of the Renewable Energy Sources (RES) sector and supports the prosumer power industry.
Anna Szeląg-Sikora   +7 more
doaj   +1 more source

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