**Volume 55 (2023)**

**Volume 54 (2022)**

**Volume 53 (2021)**

**Volume 52 (2020)**

**Volume 51 (2019)**

**Volume 50 (2018)**

**Volume 49 (2017)**

**Volume 48 (2016)**

**Volume 47 (2016)**

**Volume 46 (2015)**

**Volume 45 (2014)**

**Volume 44 (2013)**

**Volume 43 (2009)**

**Volume 42 (2008)**

**Volume 41 (2007)**

Number of Articles: 447

##### یک روش جستجوی دو- مرحلهای برای همزمانی سریع سیستمهای باند فوق وسیع در محیطهای چندمسیره

*Volume 43, Issue 5 , September 2009, , Pages 635-646*

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**Abstract **

Ultra-wideband (UWB) radio is a promising technology for low-cost, high-rate communications at short ranges. However, high bandwidth and low power of the UWB signals impose some difficult challenges in signal processing and implementation of the receiver. Acquisition of the signal timing is the first ...
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##### اندازهگیری دقیق ولتاژ الکتریکی در مبدل ولتاژ نوری با استفاده از شبکههای عصبی

*Volume 41, Issue 5 , December 2007, , Pages 643-651*

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**Abstract **

This paper introduces Artificial Neural Network (ANN) method for measuring voltage in the Optical Voltage Transducer (OVT) using one or more electric field sensors. In order to obtain an accurate voltage measurement with minimum number of sensors, first the locations of sensors are specified by quadrature ...
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##### مدلی ساده برای تحلیل تیر های پیوند عمیق با آرماتورگذاری قطری

*Volume 42, Issue 6 , December 2008, , Pages 723-737*

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**Abstract **

In this research, using the Modified Compression Field Theory (MCFT), a new truss based model is proposed to predict the behavior of reinforced concrete coupling beams with diagonal reinforcement. The model is able to consider the effects of shear and axial forces and bending moment, simultaneously. ...
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##### بررسی عددی تأثیر خصوصیات خاک بر باندهای برشی

*Volume 41, Issue 6 , January 2008, , Pages 819-834*

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**Abstract **

In some natural events such as soil failure the deformations are localized in narrow restrictions, which are called shear bands. This event which is a fundamental phenomenon in granular material, has been widely investigated during recent decades within expensive experimental tests and also some numerical ...
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##### مدل سازی و طراحی بهینه موتور پسماند نوع تخت

*Volume 42, Issue 7 , January 2009, , Pages 851-861*

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**Abstract **

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##### طراحی یک مدل مبتنی بر شبکههای عصبی برای شناسایی و تجزیه و تحلیل الگوهای غیرطبیعی در نمودارهای کنترل فرآیند

*Volume 41, Issue 7 , February 2009, , Pages 927-942*

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**Abstract **

Neural networks because of their abilities are used to patterns recognition. In statistical process control charts, a common cause variation distort expected form of unnatural patterns and so detection of assignable causes efficiently and precisely in a real-time is difficult. Therefore it would be logical ...
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##### تشکیل نانوساختارهای متخلخل پروسکایتی روی منولیت فولاد ضد زنگ

*Volume 42, Issue 8 , February 2009, , Pages 983-988*

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**Abstract **

For the first time, this research reports the formation of nanoporous layers of metals on the surface of metal substrates by Raney method and their conversion to corresponding porous perovskite layers. The noble metals doped perovskites are used as catalytic converter for reducing automotive pollutants. ...
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##### تحلیل ظرفیت و تأخیر در میادین و مقایسه آن با تقاطعهای چراغدار

*Volume 41, Issue 1 , March 2007, , Pages 25-33*

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**Abstract **

Roundabout is one of the most effective intersection control methods in the world. Although, they have often been used in Iran, but, the methods which are proposed to analyze roundabouts are very old and new regulations are not implemented for analyzing modern roundabouts. There are strong needs to apply ...
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##### Asteroidal number for some product graphs

*Volume 49, Issue 1 , June 2017, , Pages 31-43*

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**Abstract **

The notion of Asteroidal triples was introduced by Lekkerkerker and Boland [6]. D.G.Corneil and others [2], Ekkehard Kohler [3] further investigated asteroidal triples. Walter generalized the concept of asteroidal triples to asteroidal sets [8]. Further study was carried out by Haiko Muller [4]. In this ...
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##### کاربرد مدل های k-? خطی و غیر خطی در پیش بینی جریان و انتقال حرارت جا به جائی در کانال های با موانع منفصل

*Volume 43, Issue 1 , April 2009, , Pages 39-49*

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**Abstract **

Roughness elements or turbulence promoters have been widely used to enhance heat transfer in cooling passages of modern gas turbine blades. Although such ribs substantially enhance heat transfer, the heat transfer coefficient is reduced immediately at corner downstream of each rib, creating hot spots. ...
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##### k-Remainder Cordial Graphs

*Volume 49, Issue 2 , December 2017, , Pages 41-52*

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**Abstract **

In this paper we generalize the remainder cordial labeling, called $k$-remainder cordial labeling and investigate the $4$-remainder cordial labeling behavior of certain graphs.
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##### The Mean Labeling of Some Crowns

*Volume 45, Issue 1 , December 2014, , Pages 43-54*

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**Abstract **

Mean labelings are a type of additive vertex labeling. This labeling assigns non-negative integers to the vertices of a graph in such a way that all edge-weights are different, where the weight of an edge is defined as the mean of the end-vertex labels rounded up to the nearest integer. In this paper ...
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##### Efficient Approximation Algorithms for Point-set Diameter in Higher Dimensions

*Volume 51, Issue 2 , December 2019, , Pages 47-61*

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**Abstract **

We study the problem of computing the diameter of a set of $n$ points in $d$-dimensional Euclidean space for a fixed dimension $d$, and propose a new $(1+\varepsilon)$-approximation algorithm with $O(n+ 1/\varepsilon^{d-1})$ time and $O(n)$ space, where $0 < \varepsilon\leqslant 1$. We also ...
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##### Max-Min averaging operator: fuzzy inequality systems and resolution

*Volume 51, Issue 1 , June 2019, , Pages 55-70*

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**Abstract **

Minimum and maximum operators are two well-known t-norm and s-norm used frequently in fuzzy systems. In this paper, two different types of fuzzy inequalities are simultaneously studied where the convex combination of minimum and maximum operators is applied as the fuzzy relational composition. ...
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##### LP problems constrained with D-FRIs

*Volume 50, issue 2 , December 2018, , Pages 59-79*

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**Abstract **

In this paper, optimization of a linear objective function with fuzzy relational inequality constraints is investigated where the feasible region is formed as the intersection of two inequality fuzzy systems and Dombi family of t-norms is considered as fuzzy composition. Dombi family of t-norms includes ...
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##### Modelling Decision Problems Via Birkhoff Polyhedra

*Volume 44, Issue 1 , December 2013, , Pages 61-81*

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**Abstract **

A compact formulation of the set of tours neither in a graph nor its complement is presented and illustrates a general methodology proposed for constructing polyhedral models of decision problems based upon permutations, projection and lifting techniques. Directed Hamilton tours on n vertex graphs are ...
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##### 4-Prime cordiality of some classes of graphs

*Volume 48, Issue 1 , December 2016, , Pages 69-79*

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**Abstract **

Let G be a (p, q) graph. Let f : V (G) → {1, 2, . . . , k} be a map. For each edge uv, assign the label gcd (f(u), f(v)). f is called k-prime cordial labeling of G if |vf (i) − vf (j)| ≤ 1, i, j ∈ {1, 2, . . . , k} and |ef (0) − ef (1)| ≤ 1 where vf (x) denotes the number ...
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##### Further results on total mean cordial labeling of graphs

*Volume 46, Issue 1 , December 2015, , Pages 73-83*

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**Abstract **

A graph G = (V,E) with p vertices and q edges is said to be a total mean cordial graph if there exists a function f : V (G) → {0, 1, 2} such that f(xy) = [(f(x)+f(y))/2] where x, y ∈ V (G), xy ∈ E(G), and the total number of 0, 1 and 2 are balanced. That is |evf (i) ...
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##### تحلیل شکلدهی انفجاری و بدونِ قالب ورقهای مدورِ دولایه با استفاده از اصل پایستاری انرژی

*Volume 42, Issue 1 , April 2008, , Pages 97-106*

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**Abstract **

Die less explosive forming of circular plates is one of the most useful methods in the industries especially chemical applications. Manufacturing of large vessel's head, multilayer rings and some parts of heat exchangers are the example of applying this method. Many theoretical and experimental researches ...
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##### One Modulo Three Geometric Mean Graphs

*Volume 50, Issue 1 , June 2018, , Pages 101-108*

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**Abstract **

A graph $G$ is said to be one modulo three geometric mean graph if there is an injective function $\phi$ from the vertex set of $G$ to the set $\{a \mid 1\leq a \leq 3q-2\} $ and either $a\equiv 0(mod 3) $ or $ a\equiv 1(mod 3)\}$ where $q$ is the number of edges of $G$ and $\phi$ induces a bijection ...
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##### بررسی لیچینگ اسیدی نیکل از ضایعات کاتالیستی

*Volume 43, Issue 2 , July 2009, , Pages 149-157*

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**Abstract **

There are no appreciable amounts of nickel resources in Iran; therefore, secondary resources of this element are to be more considered in future. Spent nickel catalysts that are used in various industrial processes are one of them. For example nickel catalyst that is used in hydrogenation of edible oil ...
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##### غلیظ آب Steep (خیسانده ذرت) با استفاده از غشاء اسمز معکوس

*Volume 42, Issue 2 , May 2008, , Pages 191-198*

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**Abstract **

Corn steep water as effluent which arrives in environment from starch processing industry has adverse effects on the environment and also large volume of fresh water is wasted. Corn step water is composed of high concentration of proteins, sugar, starch, vitamin and minerals, so it can be used as substrate ...
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##### بررسی پارامترهای مؤثر در جذب اسید لاکتیک توسط رزین امبرلایت IRA-400

*Volume 41, Issue 2 , July 2007, , Pages 219-224*

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**Abstract **

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##### پیشبینی تولید ماسه با استفاده از مدلسازی عددی

*Volume 41, Issue 3 , September 2007, , Pages 263-271*

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**Abstract **

Mansuri oil field, which is located at the South-West of Iran, has sand production problem and primary analyses proved the existence of this phenomenon in this field. Generally, there are three methods to evaluate the sand production state which are empirical, numerical, mathematical, and physical. Considering ...
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##### مدل سازی خطای تروپوسفری برای مشاهدات تعیین موقعیت ماهوارهای

*Volume 42, Issue 3 , July 2008, , Pages 269-278*