Results 31 to 40 of about 4,256,905 (264)
Topological Indices of Families of Bistar and Corona Product of Graphs
Journal of Mathematics, 2022 Topological indices are graph invariants that are used to correlate the physicochemical properties of a chemical compound with its (molecular) graph. In this study, we study certain degree-based topological indices such as Randić index, Zagreb indices ...
A. Khalid +5 more
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Aggregating Composite Indicators through the Geometric Mean: A Penalization Approach
Computation, 2022 In this paper, we introduce a penalized version of the geometric mean. In analogy with the Mazziotta Pareto Index, this composite indicator is derived as a product between the geometric mean and a penalization term to account for the unbalance among ...
Francesca Mariani, Mariateresa Ciommi
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Topological Indices of Certain Transformed Chemical Structures
Journal of Chemistry, 2020 Topological indices like generalized Randić index, augmented Zagreb index, geometric arithmetic index, harmonic index, product connectivity index, general sum-connectivity index, and atom-bond connectivity index are employed to calculate the bioactivity ...
Xuewu Zuo +4 more
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Proposal and validation of geostatistical-based metrics to quantify within-field variability [PDF]
Revista Brasileira de Ciência do SoloMetrics are fundamental to quantify and classify the spatial dependence of soil and agricultural attributes. This study aimed to propose and validate metrics based on two distinct approaches, one additive, which considers the arithmetic mean of the ...
Enio Júnior Seidel +1 more
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On Multiplicative Topological Invariants of Magnesium Iodide Structure
Journal of Mathematics, 2022 In recent times, the applications of graph theory in molecular and chemical structure research have far exceeded human expectations and have grown exponentially.
Zhiqiang Zhang +5 more
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Optimal upper bounds of the geometric-arithmetic index [PDF]
, 2021 The concept of geometric-arithmetic index was introduced in the chemical graph theory recently, but it has shown to be useful. The aim of this paper is to obtain new upper bounds of the geometric-arithmetic index and characterize graphs extremal with ...
Sigarreta Almira, José María +1 more
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On a mathematical theory of sustainability assessment
Proceedings (European Academy of Sciences and Arts), 2022 We compile a number of postulates to be satisfied by a function that mathematically assesses sustainability of some type: national, urban, energy, etc.
Yannis A. Phillis +3 more
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Degree-Based Topological Indices of Polysaccharides: Amylose and Blue Starch-Iodine Complex
Journal of Chemistry, 2021 Starch is a polymer of glucose where alpha-linkages are associated with glucopyranose units. It comprises a mixture of amylose and amylopectin. Furthermore, amylose is a linear chain of hundreds of glucose molecules.
Anam Rani, Usman Ali
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Advanced Engineering Materials, EarlyView.Binder‐free laser powder bed fusion of 8YSZ with a femtosecond laser is used to map process windows linking scan strategy, heat accumulation, and grain growth. Time‐resolved thermography and simulations reveal thermal regimes that enable continuous, vitrified, and fine‐grained 8YSZ surface layers without absorptive additives and demonstrate ...
Markus Kühn +5 more
wiley +1 more source
On Topological Indices of Certain Families of Nanostar Dendrimers
Molecules, 2016 A topological index of graph G is a numerical parameter related to G which characterizes its molecular topology and is usually graph invariant. In the field of quantitative structure-activity (QSAR)/quantitative structure-activity structure-property ...
Mohamad Nazri Husin +3 more
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