نتایج جستجو برای: daviesbouldin index
تعداد نتایج: 396061 فیلتر نتایج به سال:
Wiener index is a topological index based on distance between every pair of vertices in a graph G. It was introduced in 1947 by one of the pioneer of this area e.g, Harold Wiener. In the present paper, by using a new method introduced by klavžar we compute the Wiener and Szeged indices of some nanostar dendrimers.
Background and purpose: There are some strengths and weaknesses in current indicators of scientometrics. This study aimed to present a new index of scientometrics in evaluating scientific output of Iranian medical journals. Materials and methods: This exploratory analytical study was done with a scientometric approach in scientific output of 108 medical science journals indexed in Scopus and 6...
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Liver regeneration is known to begin after experimentally induced liver resection. At first 24-48 hours, DNA synthesis reaches the maximum level resection and significantly occur on 10 days. In this study, we was examined of 1st 14th days 
 experiment 21 Wistar albino male rats were used. The randomly divided into three groups. All groups realized midline incision with laparotomy for liver...
سابقه و هدف : سقط خود بخودی مکرر به مواردی اطلاق می گردد که حداقل 3 سقط خودب ه خودی پشت سر هم اتفاق افتاده باشد. با توجه به بالا بودن شیوع سقط مکرر در جامعه و متفاوت بودن میزان مقاومت شریان رحمی در مقالات مختلف و همچنی ن عدم بررسی شریان تخمدانی در کشور ما، مطالعه ای حاضر با هدف بررسی میزان مقاومت شرایین رحمی و تخمدانی زنان با سقط مکرر در فاز میدلوتئال و مقایسه آن با زنان بارور نرمال انجام شد. م...
motivated by the terminal wiener index, we define the ashwini index $mathcal{a}$ of trees as begin{eqnarray*} % nonumber to remove numbering (before each equation) mathcal{a}(t) &=& sumlimits_{1leq i&+& deg_{_{t}}(n(v_{j}))], end{eqnarray*} where $d_{t}(v_{i}, v_{j})$ is the distance between the vertices $v_{i}, v_{j} in v(t)$, is equal to the length of the shortest path start...
the sadhana index (sd) is a newly introduced cyclic index. efficient formulae for calculatingthe sd (sadhana) index of linear phenylenes are given and a simple relation is establishedbetween the sd index of phenylenes and of the corresponding hexagonal sequences.
The first reformulated Zagreb index $EM_1(G)$ of a simple graph $G$ is defined as the sum of the terms $(d_u+d_v-2)^2$ over all edges $uv$ of $G .$ In this paper, the various upper and lower bounds for the first reformulated Zagreb index of a connected graph interms of other topological indices are obtained.
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