Results 11 to 20 of about 219,177 (262)
On Weighted PI Index of Graphs
Electronic Notes in Discrete Mathematics, 2016 Abstract The vertex PI index of a graph G, denoted by P I v ( G ) , is the sum over all edges uv of G of the number of vertices which are not equidistant from u and v. Similarly, the Weighted PI index of a graph G, denoted by P I w ( G ) = ∑ u v = e ∈ E ( G ) ( d G ( u ) + d G ( v
Kannan Pattabiraman, P. Kandan
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Estimating the Vertex PI Index
Zeitschrift für Naturforschung A, 2010 The vertex PI index is a distance-based molecular structure descriptor, that recently found numerous chemical applications. Lower and upper bounds for PI are obtained, as well as results of Nordhaus-Gaddum type.
das, kinkar, Gutman, Ivan
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Computation of edge Pi index, vertex Pi index and Szeged index of some cactus chains
Mathematica Montisnigri, 2022 A cactus chain is a connected graph in which all blocks are cycles, each cycle has at most two cut-vertices and each cut-vertex is shared by exactly two cycles. In this paper we give exact values of edge PI index and vertex PI index of an arbitrary cactus chain and vertex Szeged index of some special types of cactus chains.
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Mathematical and Computer Modelling, 2013 Abstract The vertex PI index is a distance-based molecular structure descriptor, that recently found numerous chemical applications. In order to increase diversity of this topological index for bipartite graphs, we introduce a weighted version defined as P I w ( G ) = ∑ e = u v ∈ E ( d e g ( u ) + d e g (
Aleksandar Ilic, Nikola Milosavljevic
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The PI index of product graphs
Applied Mathematics Letters, 2008 zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Hassan Yousefi-Azari +2 more
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Perfusion index and pleth variability index in the first hour of life according to mode of delivery
The Turkish Journal of Pediatrics, 2018 Perfusion index (PI) is a relative assessment of the pulse strength at the monitoring site. The plethysmographic variability index (PVI, pleth variability index) is a noninvasive and continuous measure of the dynamic change in PI that occurs during ...
Şule Yiğit +3 more
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Evaluation of Perfusion Index as a Tool for Early Detection of Ulnar Nerve Sparing after Brachial Plexus Block Through Supraclavicular Approach: A Prospective Observational Study [PDF]
Journal of Clinical and Diagnostic ResearchIntroduction: Supraclavicular Brachial Plexus Block (SPB) is a common anaesthesia method for upper limb surgeries. However, ulnar nerve sparing can occur, leading to patient discomfort and surgical delays.
Jigisha Bharatbhai Mehta +2 more
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Journal of Obstetric Anaesthesia and Critical Care, 2023 Aim: The aim of this study was to determine whether a baseline perfusion index (PI) can predict hypotension and shivering after spinal anesthesia for cesarean section.
Parita Gandhi +5 more
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Chest CT Scan Features to Predict COVID-19 Patients’ Outcome and Survival
Radiology Research and Practice, 2022 Background. Providing efficient care for infectious coronavirus disease 2019 (COVID-19) patients requires an accurate and accessible tool to medically optimize medical resource allocation to high-risk patients. Purpose.
Mohammad-Mehdi Mehrabi Nejad +6 more
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Heliyon, 2023 Introduction: Acute renal failure (ARF), which may occur as a result of hypovolemia, is frequently diagnosed in emergency departments. It is essential to determine these patients' volume status and fluid requirement.
Nihal Koc Güdük, Taner Sahin
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